Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "This contains platform-related driver updates for ARM and ARM64.

  Highlights:

   - ARM SCMI (System Control & Management Interface) driver cleanups

   - Hisilicon support for LPC bus w/ ACPI

   - Reset driver updates for several platforms: Uniphier,

   - Rockchip power domain bindings and hardware descriptions for
     several SoCs.

   - Tegra memory controller reset improvements"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (59 commits)
  ARM: tegra: fix compile-testing PCI host driver
  soc: rockchip: power-domain: add power domain support for px30
  dt-bindings: power: add binding for px30 power domains
  dt-bindings: power: add PX30 SoCs header for power-domain
  soc: rockchip: power-domain: add power domain support for rk3228
  dt-bindings: power: add binding for rk3228 power domains
  dt-bindings: power: add RK3228 SoCs header for power-domain
  soc: rockchip: power-domain: add power domain support for rk3128
  dt-bindings: power: add binding for rk3128 power domains
  dt-bindings: power: add RK3128 SoCs header for power-domain
  soc: rockchip: power-domain: add power domain support for rk3036
  dt-bindings: power: add binding for rk3036 power domains
  dt-bindings: power: add RK3036 SoCs header for power-domain
  dt-bindings: memory: tegra: Remove Tegra114 SATA and AFI reset definitions
  memory: tegra: Remove Tegra114 SATA and AFI reset definitions
  memory: tegra: Register SMMU after MC driver became ready
  soc: mediatek: remove unneeded semicolon
  soc: mediatek: add a fixed wait for SRAM stable
  soc: mediatek: introduce a CAPS flag for scp_domain_data
  soc: mediatek: reuse regmap_read_poll_timeout helpers
  ...

Documentation/devicetree/bindings/power/pd-samsung.txt

@@ -15,23 +15,13 @@ Required Properties:
 Optional Properties:
 - label: Human readable string with domain name. Will be visible in userspace
 	to let user to distinguish between multiple domains in SoC.
-- clocks: List of clock handles. The parent clocks of the input clocks to the
-	devices in this power domain are set to oscclk before power gating
-	and restored back after powering on a domain. This is required for
-	all domains which are powered on and off and not required for unused
-	domains.
-- clock-names: The following clocks can be specified:
-	- oscclk: Oscillator clock.
-	- clkN: Input clocks to the devices in this power domain. These clocks
-		will be reparented to oscclk before switching power domain off.
-		Their original parent will be brought back after turning on
-		the domain. Maximum of 4 clocks (N = 0 to 3) are supported.
-	- asbN: Clocks required by asynchronous bridges (ASB) present in
-		the power domain. These clock should be enabled during power
-		domain on/off operations.
 - power-domains: phandle pointing to the parent power domain, for more details
 		 see Documentation/devicetree/bindings/power/power_domain.txt
 
+Deprecated Properties:
+- clocks
+- clock-names
+
 Node of a device using power domains must have a power-domains property
 defined with a phandle to respective power domain.
 
@@ -47,8 +37,6 @@ Example:
 	mfc_pd: power-domain@10044060 {
 		compatible = "samsung,exynos4210-pd";
 		reg = <0x10044060 0x20>;
-		clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MOUT_USER_ACLK333>;
-		clock-names = "oscclk", "clk0";
 		#power-domain-cells = <0>;
 		label = "MFC";
 	};

Documentation/devicetree/bindings/soc/rockchip/power_domain.txt

@@ -5,6 +5,10 @@ powered up/down by software based on different application scenes to save power.
 
 Required properties for power domain controller:
 - compatible: Should be one of the following.
+	"rockchip,px30-power-controller" - for PX30 SoCs.
+	"rockchip,rk3036-power-controller" - for RK3036 SoCs.
+	"rockchip,rk3128-power-controller" - for RK3128 SoCs.
+	"rockchip,rk3228-power-controller" - for RK3228 SoCs.
 	"rockchip,rk3288-power-controller" - for RK3288 SoCs.
 	"rockchip,rk3328-power-controller" - for RK3328 SoCs.
 	"rockchip,rk3366-power-controller" - for RK3366 SoCs.
@@ -17,6 +21,10 @@ Required properties for power domain controller:
 
 Required properties for power domain sub nodes:
 - reg: index of the power domain, should use macros in:
+	"include/dt-bindings/power/px30-power.h" - for PX30 type power domain.
+	"include/dt-bindings/power/rk3036-power.h" - for RK3036 type power domain.
+	"include/dt-bindings/power/rk3128-power.h" - for RK3128 type power domain.
+	"include/dt-bindings/power/rk3228-power.h" - for RK3228 type power domain.
 	"include/dt-bindings/power/rk3288-power.h" - for RK3288 type power domain.
 	"include/dt-bindings/power/rk3328-power.h" - for RK3328 type power domain.
 	"include/dt-bindings/power/rk3366-power.h" - for RK3366 type power domain.
@@ -93,6 +101,10 @@ Node of a device using power domains must have a power-domains property,
 containing a phandle to the power device node and an index specifying which
 power domain to use.
 The index should use macros in:
+	"include/dt-bindings/power/px30-power.h" - for px30 type power domain.
+	"include/dt-bindings/power/rk3036-power.h" - for rk3036 type power domain.
+	"include/dt-bindings/power/rk3128-power.h" - for rk3128 type power domain.
+	"include/dt-bindings/power/rk3128-power.h" - for rk3228 type power domain.
 	"include/dt-bindings/power/rk3288-power.h" - for rk3288 type power domain.
 	"include/dt-bindings/power/rk3328-power.h" - for rk3328 type power domain.
 	"include/dt-bindings/power/rk3366-power.h" - for rk3366 type power domain.

drivers/bus/Kconfig

@@ -33,7 +33,6 @@ config HISILICON_LPC
 	bool "Support for ISA I/O space on HiSilicon Hip06/7"
 	depends on ARM64 && (ARCH_HISI || COMPILE_TEST)
 	select INDIRECT_PIO
-	select MFD_CORE if ACPI
 	help
 	  Driver to enable I/O access to devices attached to the Low Pin
 	  Count bus on the HiSilicon Hip06/7 SoC.

drivers/bus/arm-cci.c

@@ -371,8 +371,6 @@ asmlinkage void __naked cci_enable_port_for_self(void)
 	[sizeof_struct_cpu_port] "i" (sizeof(struct cpu_port)),
 	[sizeof_struct_ace_port] "i" (sizeof(struct cci_ace_port)),
 	[offsetof_port_phys] "i" (offsetof(struct cci_ace_port, phys)) );
-
-	unreachable();
 }
 
 /**

drivers/bus/hisi_lpc.c

@@ -11,12 +11,12 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/logic_pio.h>
-#include <linux/mfd/core.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
 #include <linux/pci.h>
+#include <linux/serial_8250.h>
 #include <linux/slab.h>
 
 #define DRV_NAME "hisi-lpc"
@@ -341,15 +341,6 @@ static const struct logic_pio_host_ops hisi_lpc_ops = {
 };
 
 #ifdef CONFIG_ACPI
-#define MFD_CHILD_NAME_PREFIX DRV_NAME"-"
-#define MFD_CHILD_NAME_LEN (ACPI_ID_LEN + sizeof(MFD_CHILD_NAME_PREFIX) - 1)
-
-struct hisi_lpc_mfd_cell {
-	struct mfd_cell_acpi_match acpi_match;
-	char name[MFD_CHILD_NAME_LEN];
-	char pnpid[ACPI_ID_LEN];
-};
-
 static int hisi_lpc_acpi_xlat_io_res(struct acpi_device *adev,
 				     struct acpi_device *host,
 				     struct resource *res)
@@ -368,7 +359,7 @@ static int hisi_lpc_acpi_xlat_io_res(struct acpi_device *adev,
 }
 
 /*
- * hisi_lpc_acpi_set_io_res - set the resources for a child's MFD
+ * hisi_lpc_acpi_set_io_res - set the resources for a child
  * @child: the device node to be updated the I/O resource
  * @hostdev: the device node associated with host controller
  * @res: double pointer to be set to the address of translated resources
@@ -452,78 +443,122 @@ static int hisi_lpc_acpi_set_io_res(struct device *child,
 	return 0;
 }
 
+static int hisi_lpc_acpi_remove_subdev(struct device *dev, void *unused)
+{
+	platform_device_unregister(to_platform_device(dev));
+	return 0;
+}
+
+struct hisi_lpc_acpi_cell {
+	const char *hid;
+	const char *name;
+	void *pdata;
+	size_t pdata_size;
+};
+
 /*
  * hisi_lpc_acpi_probe - probe children for ACPI FW
  * @hostdev: LPC host device pointer
  *
  * Returns 0 when successful, and a negative value for failure.
  *
- * Scan all child devices and create a per-device MFD with
- * logical PIO translated IO resources.
+ * Create a platform device per child, fixing up the resources
+ * from bus addresses to Logical PIO addresses.
+ *
  */
 static int hisi_lpc_acpi_probe(struct device *hostdev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(hostdev);
-	struct hisi_lpc_mfd_cell *hisi_lpc_mfd_cells;
-	struct mfd_cell *mfd_cells;
 	struct acpi_device *child;
-	int size, ret, count = 0, cell_num = 0;
-
-	list_for_each_entry(child, &adev->children, node)
-		cell_num++;
-
-	/* allocate the mfd cell and companion ACPI info, one per child */
-	size = sizeof(*mfd_cells) + sizeof(*hisi_lpc_mfd_cells);
-	mfd_cells = devm_kcalloc(hostdev, cell_num, size, GFP_KERNEL);
-	if (!mfd_cells)
-		return -ENOMEM;
+	int ret;
 
-	hisi_lpc_mfd_cells = (struct hisi_lpc_mfd_cell *)&mfd_cells[cell_num];
 	/* Only consider the children of the host */
 	list_for_each_entry(child, &adev->children, node) {
-		struct mfd_cell *mfd_cell = &mfd_cells[count];
-		struct hisi_lpc_mfd_cell *hisi_lpc_mfd_cell =
-					&hisi_lpc_mfd_cells[count];
-		struct mfd_cell_acpi_match *acpi_match =
-					&hisi_lpc_mfd_cell->acpi_match;
-		char *name = hisi_lpc_mfd_cell[count].name;
-		char *pnpid = hisi_lpc_mfd_cell[count].pnpid;
-		struct mfd_cell_acpi_match match = {
-			.pnpid = pnpid,
+		const char *hid = acpi_device_hid(child);
+		const struct hisi_lpc_acpi_cell *cell;
+		struct platform_device *pdev;
+		const struct resource *res;
+		bool found = false;
+		int num_res;
+
+		ret = hisi_lpc_acpi_set_io_res(&child->dev, &adev->dev, &res,
+					       &num_res);
+		if (ret) {
+			dev_warn(hostdev, "set resource fail (%d)\n", ret);
+			goto fail;
+		}
+
+		cell = (struct hisi_lpc_acpi_cell []){
+			/* ipmi */
+			{
+				.hid = "IPI0001",
+				.name = "hisi-lpc-ipmi",
+			},
+			/* 8250-compatible uart */
+			{
+				.hid = "HISI1031",
+				.name = "serial8250",
+				.pdata = (struct plat_serial8250_port []) {
+					{
+						.iobase = res->start,
+						.uartclk = 1843200,
+						.iotype = UPIO_PORT,
+						.flags = UPF_BOOT_AUTOCONF,
+					},
+					{}
+				},
+				.pdata_size = 2 *
+					sizeof(struct plat_serial8250_port),
+			},
+			{}
 		};
 
-		/*
-		 * For any instances of this host controller (Hip06 and Hip07
-		 * are the only chipsets), we would not have multiple slaves
-		 * with the same HID. And in any system we would have just one
-		 * controller active. So don't worrry about MFD name clashes.
-		 */
-		snprintf(name, MFD_CHILD_NAME_LEN, MFD_CHILD_NAME_PREFIX"%s",
-			 acpi_device_hid(child));
-		snprintf(pnpid, ACPI_ID_LEN, "%s", acpi_device_hid(child));
-
-		memcpy(acpi_match, &match, sizeof(*acpi_match));
-		mfd_cell->name = name;
-		mfd_cell->acpi_match = acpi_match;
-
-		ret = hisi_lpc_acpi_set_io_res(&child->dev, &adev->dev,
-					       &mfd_cell->resources,
-					       &mfd_cell->num_resources);
-		if (ret) {
-			dev_warn(&child->dev, "set resource fail (%d)\n", ret);
-			return ret;
+		for (; cell && cell->name; cell++) {
+			if (!strcmp(cell->hid, hid)) {
+				found = true;
+				break;
+			}
 		}
-		count++;
-	}
 
-	ret = mfd_add_devices(hostdev, PLATFORM_DEVID_NONE,
-			      mfd_cells, cell_num, NULL, 0, NULL);
-	if (ret) {
-		dev_err(hostdev, "failed to add mfd cells (%d)\n", ret);
-		return ret;
+		if (!found) {
+			dev_warn(hostdev,
+				 "could not find cell for child device (%s)\n",
+				 hid);
+			ret = -ENODEV;
+			goto fail;
+		}
+
+		pdev = platform_device_alloc(cell->name, PLATFORM_DEVID_AUTO);
+		if (!pdev) {
+			ret = -ENOMEM;
+			goto fail;
+		}
+
+		pdev->dev.parent = hostdev;
+		ACPI_COMPANION_SET(&pdev->dev, child);
+
+		ret = platform_device_add_resources(pdev, res, num_res);
+		if (ret)
+			goto fail;
+
+		ret = platform_device_add_data(pdev, cell->pdata,
+					       cell->pdata_size);
+		if (ret)
+			goto fail;
+
+		ret = platform_device_add(pdev);
+		if (ret)
+			goto fail;
+
+		acpi_device_set_enumerated(child);
 	}
 
 	return 0;
+
+fail:
+	device_for_each_child(hostdev, NULL,
+			      hisi_lpc_acpi_remove_subdev);
+	return ret;
 }
 
 static const struct acpi_device_id hisi_lpc_acpi_match[] = {

drivers/cpufreq/scmi-cpufreq.c

@@ -117,7 +117,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
 		return -ENODEV;
 	}
 
-	ret = handle->perf_ops->add_opps_to_device(handle, cpu_dev);
+	ret = handle->perf_ops->device_opps_add(handle, cpu_dev);
 	if (ret) {
 		dev_warn(cpu_dev, "failed to add opps to the device\n");
 		return ret;
@@ -164,7 +164,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
 	/* SCMI allows DVFS request for any domain from any CPU */
 	policy->dvfs_possible_from_any_cpu = true;
 
-	latency = handle->perf_ops->get_transition_latency(handle, cpu_dev);
+	latency = handle->perf_ops->transition_latency_get(handle, cpu_dev);
 	if (!latency)
 		latency = CPUFREQ_ETERNAL;
 

drivers/firmware/arm_scmi/base.c

@@ -26,7 +26,7 @@ struct scmi_msg_resp_base_attributes {
  * scmi_base_attributes_get() - gets the implementation details
  *	that are associated with the base protocol.
  *
- * @handle - SCMI entity handle
+ * @handle: SCMI entity handle
  *
  * Return: 0 on success, else appropriate SCMI error.
  */
@@ -37,7 +37,7 @@ static int scmi_base_attributes_get(const struct scmi_handle *handle)
 	struct scmi_msg_resp_base_attributes *attr_info;
 	struct scmi_revision_info *rev = handle->version;
 
-	ret = scmi_one_xfer_init(handle, PROTOCOL_ATTRIBUTES,
+	ret = scmi_xfer_get_init(handle, PROTOCOL_ATTRIBUTES,
 				 SCMI_PROTOCOL_BASE, 0, sizeof(*attr_info), &t);
 	if (ret)
 		return ret;
@@ -49,15 +49,16 @@ static int scmi_base_attributes_get(const struct scmi_handle *handle)
 		rev->num_agents = attr_info->num_agents;
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
+
 	return ret;
 }
 
 /**
  * scmi_base_vendor_id_get() - gets vendor/subvendor identifier ASCII string.
  *
- * @handle - SCMI entity handle
- * @sub_vendor - specify true if sub-vendor ID is needed
+ * @handle: SCMI entity handle
+ * @sub_vendor: specify true if sub-vendor ID is needed
  *
  * Return: 0 on success, else appropriate SCMI error.
  */
@@ -80,7 +81,7 @@ scmi_base_vendor_id_get(const struct scmi_handle *handle, bool sub_vendor)
 		size = ARRAY_SIZE(rev->vendor_id);
 	}
 
-	ret = scmi_one_xfer_init(handle, cmd, SCMI_PROTOCOL_BASE, 0, size, &t);
+	ret = scmi_xfer_get_init(handle, cmd, SCMI_PROTOCOL_BASE, 0, size, &t);
 	if (ret)
 		return ret;
 
@@ -88,7 +89,8 @@ scmi_base_vendor_id_get(const struct scmi_handle *handle, bool sub_vendor)
 	if (!ret)
 		memcpy(vendor_id, t->rx.buf, size);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
+
 	return ret;
 }
 
@@ -97,7 +99,7 @@ scmi_base_vendor_id_get(const struct scmi_handle *handle, bool sub_vendor)
  *	implementation 32-bit version. The format of the version number is
  *	vendor-specific
  *
- * @handle - SCMI entity handle
+ * @handle: SCMI entity handle
  *
  * Return: 0 on success, else appropriate SCMI error.
  */
@@ -109,7 +111,7 @@ scmi_base_implementation_version_get(const struct scmi_handle *handle)
 	struct scmi_xfer *t;
 	struct scmi_revision_info *rev = handle->version;
 
-	ret = scmi_one_xfer_init(handle, BASE_DISCOVER_IMPLEMENT_VERSION,
+	ret = scmi_xfer_get_init(handle, BASE_DISCOVER_IMPLEMENT_VERSION,
 				 SCMI_PROTOCOL_BASE, 0, sizeof(*impl_ver), &t);
 	if (ret)
 		return ret;
@@ -120,7 +122,8 @@ scmi_base_implementation_version_get(const struct scmi_handle *handle)
 		rev->impl_ver = le32_to_cpu(*impl_ver);
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
+
 	return ret;
 }
 
@@ -128,8 +131,8 @@ scmi_base_implementation_version_get(const struct scmi_handle *handle)
  * scmi_base_implementation_list_get() - gets the list of protocols it is
  *	OSPM is allowed to access
  *
- * @handle - SCMI entity handle
- * @protocols_imp - pointer to hold the list of protocol identifiers
+ * @handle: SCMI entity handle
+ * @protocols_imp: pointer to hold the list of protocol identifiers
  *
  * Return: 0 on success, else appropriate SCMI error.
  */
@@ -143,7 +146,7 @@ static int scmi_base_implementation_list_get(const struct scmi_handle *handle,
 	u32 tot_num_ret = 0, loop_num_ret;
 	struct device *dev = handle->dev;
 
-	ret = scmi_one_xfer_init(handle, BASE_DISCOVER_LIST_PROTOCOLS,
+	ret = scmi_xfer_get_init(handle, BASE_DISCOVER_LIST_PROTOCOLS,
 				 SCMI_PROTOCOL_BASE, sizeof(*num_skip), 0, &t);
 	if (ret)
 		return ret;
@@ -172,16 +175,17 @@ static int scmi_base_implementation_list_get(const struct scmi_handle *handle,
 		tot_num_ret += loop_num_ret;
 	} while (loop_num_ret);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
+
 	return ret;
 }
 
 /**
  * scmi_base_discover_agent_get() - discover the name of an agent
  *
- * @handle - SCMI entity handle
- * @id - Agent identifier
- * @name - Agent identifier ASCII string
+ * @handle: SCMI entity handle
+ * @id: Agent identifier
+ * @name: Agent identifier ASCII string
  *
  * An agent id of 0 is reserved to identify the platform itself.
  * Generally operating system is represented as "OSPM"
@@ -194,7 +198,7 @@ static int scmi_base_discover_agent_get(const struct scmi_handle *handle,
 	int ret;
 	struct scmi_xfer *t;
 
-	ret = scmi_one_xfer_init(handle, BASE_DISCOVER_AGENT,
+	ret = scmi_xfer_get_init(handle, BASE_DISCOVER_AGENT,
 				 SCMI_PROTOCOL_BASE, sizeof(__le32),
 				 SCMI_MAX_STR_SIZE, &t);
 	if (ret)
@@ -206,7 +210,8 @@ static int scmi_base_discover_agent_get(const struct scmi_handle *handle,
 	if (!ret)
 		memcpy(name, t->rx.buf, SCMI_MAX_STR_SIZE);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
+
 	return ret;
 }
 

drivers/firmware/arm_scmi/bus.c

@@ -125,13 +125,13 @@ scmi_device_create(struct device_node *np, struct device *parent, int protocol)
 	int id, retval;
 	struct scmi_device *scmi_dev;
 
-	id = ida_simple_get(&scmi_bus_id, 1, 0, GFP_KERNEL);
-	if (id < 0)
-		return NULL;
-
 	scmi_dev = kzalloc(sizeof(*scmi_dev), GFP_KERNEL);
 	if (!scmi_dev)
-		goto no_mem;
+		return NULL;
+
+	id = ida_simple_get(&scmi_bus_id, 1, 0, GFP_KERNEL);
+	if (id < 0)
+		goto free_mem;
 
 	scmi_dev->id = id;
 	scmi_dev->protocol_id = protocol;
@@ -141,13 +141,15 @@ scmi_device_create(struct device_node *np, struct device *parent, int protocol)
 	dev_set_name(&scmi_dev->dev, "scmi_dev.%d", id);
 
 	retval = device_register(&scmi_dev->dev);
-	if (!retval)
-		return scmi_dev;
+	if (retval)
+		goto put_dev;
 
+	return scmi_dev;
+put_dev:
 	put_device(&scmi_dev->dev);
-	kfree(scmi_dev);
-no_mem:
 	ida_simple_remove(&scmi_bus_id, id);
+free_mem:
+	kfree(scmi_dev);
 	return NULL;
 }
 
@@ -171,9 +173,9 @@ int scmi_protocol_register(int protocol_id, scmi_prot_init_fn_t fn)
 	spin_lock(&protocol_lock);
 	ret = idr_alloc(&scmi_protocols, fn, protocol_id, protocol_id + 1,
 			GFP_ATOMIC);
+	spin_unlock(&protocol_lock);
 	if (ret != protocol_id)
 		pr_err("unable to allocate SCMI idr slot, err %d\n", ret);
-	spin_unlock(&protocol_lock);
 
 	return ret;
 }

drivers/firmware/arm_scmi/clock.c

@@ -77,7 +77,7 @@ static int scmi_clock_protocol_attributes_get(const struct scmi_handle *handle,
 	struct scmi_xfer *t;
 	struct scmi_msg_resp_clock_protocol_attributes *attr;
 
-	ret = scmi_one_xfer_init(handle, PROTOCOL_ATTRIBUTES,
+	ret = scmi_xfer_get_init(handle, PROTOCOL_ATTRIBUTES,
 				 SCMI_PROTOCOL_CLOCK, 0, sizeof(*attr), &t);
 	if (ret)
 		return ret;
@@ -90,7 +90,7 @@ static int scmi_clock_protocol_attributes_get(const struct scmi_handle *handle,
 		ci->max_async_req = attr->max_async_req;
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -101,7 +101,7 @@ static int scmi_clock_attributes_get(const struct scmi_handle *handle,
 	struct scmi_xfer *t;
 	struct scmi_msg_resp_clock_attributes *attr;
 
-	ret = scmi_one_xfer_init(handle, CLOCK_ATTRIBUTES, SCMI_PROTOCOL_CLOCK,
+	ret = scmi_xfer_get_init(handle, CLOCK_ATTRIBUTES, SCMI_PROTOCOL_CLOCK,
 				 sizeof(clk_id), sizeof(*attr), &t);
 	if (ret)
 		return ret;
@@ -115,7 +115,7 @@ static int scmi_clock_attributes_get(const struct scmi_handle *handle,
 	else
 		clk->name[0] = '\0';
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -132,7 +132,7 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id,
 	struct scmi_msg_clock_describe_rates *clk_desc;
 	struct scmi_msg_resp_clock_describe_rates *rlist;
 
-	ret = scmi_one_xfer_init(handle, CLOCK_DESCRIBE_RATES,
+	ret = scmi_xfer_get_init(handle, CLOCK_DESCRIBE_RATES,
 				 SCMI_PROTOCOL_CLOCK, sizeof(*clk_desc), 0, &t);
 	if (ret)
 		return ret;
@@ -186,7 +186,7 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id,
 		clk->list.num_rates = tot_rate_cnt;
 
 err:
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -196,7 +196,7 @@ scmi_clock_rate_get(const struct scmi_handle *handle, u32 clk_id, u64 *value)
 	int ret;
 	struct scmi_xfer *t;
 
-	ret = scmi_one_xfer_init(handle, CLOCK_RATE_GET, SCMI_PROTOCOL_CLOCK,
+	ret = scmi_xfer_get_init(handle, CLOCK_RATE_GET, SCMI_PROTOCOL_CLOCK,
 				 sizeof(__le32), sizeof(u64), &t);
 	if (ret)
 		return ret;
@@ -211,7 +211,7 @@ scmi_clock_rate_get(const struct scmi_handle *handle, u32 clk_id, u64 *value)
 		*value |= (u64)le32_to_cpu(*(pval + 1)) << 32;
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -222,7 +222,7 @@ static int scmi_clock_rate_set(const struct scmi_handle *handle, u32 clk_id,
 	struct scmi_xfer *t;
 	struct scmi_clock_set_rate *cfg;
 
-	ret = scmi_one_xfer_init(handle, CLOCK_RATE_SET, SCMI_PROTOCOL_CLOCK,
+	ret = scmi_xfer_get_init(handle, CLOCK_RATE_SET, SCMI_PROTOCOL_CLOCK,
 				 sizeof(*cfg), 0, &t);
 	if (ret)
 		return ret;
@@ -235,7 +235,7 @@ static int scmi_clock_rate_set(const struct scmi_handle *handle, u32 clk_id,
 
 	ret = scmi_do_xfer(handle, t);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -246,7 +246,7 @@ scmi_clock_config_set(const struct scmi_handle *handle, u32 clk_id, u32 config)
 	struct scmi_xfer *t;
 	struct scmi_clock_set_config *cfg;
 
-	ret = scmi_one_xfer_init(handle, CLOCK_CONFIG_SET, SCMI_PROTOCOL_CLOCK,
+	ret = scmi_xfer_get_init(handle, CLOCK_CONFIG_SET, SCMI_PROTOCOL_CLOCK,
 				 sizeof(*cfg), 0, &t);
 	if (ret)
 		return ret;
@@ -257,7 +257,7 @@ scmi_clock_config_set(const struct scmi_handle *handle, u32 clk_id, u32 config)
 
 	ret = scmi_do_xfer(handle, t);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 

drivers/firmware/arm_scmi/common.h

@@ -7,6 +7,7 @@
  * Copyright (C) 2018 ARM Ltd.
  */
 
+#include <linux/bitfield.h>
 #include <linux/completion.h>
 #include <linux/device.h>
 #include <linux/errno.h>
@@ -14,10 +15,10 @@
 #include <linux/scmi_protocol.h>
 #include <linux/types.h>
 
-#define PROTOCOL_REV_MINOR_BITS	16
-#define PROTOCOL_REV_MINOR_MASK	((1U << PROTOCOL_REV_MINOR_BITS) - 1)
-#define PROTOCOL_REV_MAJOR(x)	((x) >> PROTOCOL_REV_MINOR_BITS)
-#define PROTOCOL_REV_MINOR(x)	((x) & PROTOCOL_REV_MINOR_MASK)
+#define PROTOCOL_REV_MINOR_MASK	GENMASK(15, 0)
+#define PROTOCOL_REV_MAJOR_MASK	GENMASK(31, 16)
+#define PROTOCOL_REV_MAJOR(x)	(u16)(FIELD_GET(PROTOCOL_REV_MAJOR_MASK, (x)))
+#define PROTOCOL_REV_MINOR(x)	(u16)(FIELD_GET(PROTOCOL_REV_MINOR_MASK, (x)))
 #define MAX_PROTOCOLS_IMP	16
 #define MAX_OPPS		16
 
@@ -50,8 +51,11 @@ struct scmi_msg_resp_prot_version {
  * @id: The identifier of the command being sent
  * @protocol_id: The identifier of the protocol used to send @id command
  * @seq: The token to identify the message. when a message/command returns,
- *       the platform returns the whole message header unmodified including
- *	 the token.
+ *	the platform returns the whole message header unmodified including
+ *	the token
+ * @status: Status of the transfer once it's complete
+ * @poll_completion: Indicate if the transfer needs to be polled for
+ *	completion or interrupt mode is used
  */
 struct scmi_msg_hdr {
 	u8 id;
@@ -82,18 +86,16 @@ struct scmi_msg {
  *	buffer for the rx path as we use for the tx path.
  * @done: completion event
  */
-
 struct scmi_xfer {
-	void *con_priv;
 	struct scmi_msg_hdr hdr;
 	struct scmi_msg tx;
 	struct scmi_msg rx;
 	struct completion done;
 };
 
-void scmi_one_xfer_put(const struct scmi_handle *h, struct scmi_xfer *xfer);
+void scmi_xfer_put(const struct scmi_handle *h, struct scmi_xfer *xfer);
 int scmi_do_xfer(const struct scmi_handle *h, struct scmi_xfer *xfer);
-int scmi_one_xfer_init(const struct scmi_handle *h, u8 msg_id, u8 prot_id,
+int scmi_xfer_get_init(const struct scmi_handle *h, u8 msg_id, u8 prot_id,
 		       size_t tx_size, size_t rx_size, struct scmi_xfer **p);
 int scmi_handle_put(const struct scmi_handle *handle);
 struct scmi_handle *scmi_handle_get(struct device *dev);

drivers/firmware/arm_scmi/driver.c

@@ -29,16 +29,12 @@
 
 #include "common.h"
 
-#define MSG_ID_SHIFT		0
-#define MSG_ID_MASK		0xff
-#define MSG_TYPE_SHIFT		8
-#define MSG_TYPE_MASK		0x3
-#define MSG_PROTOCOL_ID_SHIFT	10
-#define MSG_PROTOCOL_ID_MASK	0xff
-#define MSG_TOKEN_ID_SHIFT	18
-#define MSG_TOKEN_ID_MASK	0x3ff
-#define MSG_XTRACT_TOKEN(header)	\
-	(((header) >> MSG_TOKEN_ID_SHIFT) & MSG_TOKEN_ID_MASK)
+#define MSG_ID_MASK		GENMASK(7, 0)
+#define MSG_TYPE_MASK		GENMASK(9, 8)
+#define MSG_PROTOCOL_ID_MASK	GENMASK(17, 10)
+#define MSG_TOKEN_ID_MASK	GENMASK(27, 18)
+#define MSG_XTRACT_TOKEN(hdr)	FIELD_GET(MSG_TOKEN_ID_MASK, (hdr))
+#define MSG_TOKEN_MAX		(MSG_XTRACT_TOKEN(MSG_TOKEN_ID_MASK) + 1)
 
 enum scmi_error_codes {
 	SCMI_SUCCESS = 0,	/* Success */
@@ -55,7 +51,7 @@ enum scmi_error_codes {
 	SCMI_ERR_MAX
 };
 
-/* List of all  SCMI devices active in system */
+/* List of all SCMI devices active in system */
 static LIST_HEAD(scmi_list);
 /* Protection for the entire list */
 static DEFINE_MUTEX(scmi_list_mutex);
@@ -72,7 +68,6 @@ static DEFINE_MUTEX(scmi_list_mutex);
 struct scmi_xfers_info {
 	struct scmi_xfer *xfer_block;
 	unsigned long *xfer_alloc_table;
-	/* protect transfer allocation */
 	spinlock_t xfer_lock;
 };
 
@@ -98,6 +93,7 @@ struct scmi_desc {
  * @payload: Transmit/Receive mailbox channel payload area
  * @dev: Reference to device in the SCMI hierarchy corresponding to this
  *	 channel
+ * @handle: Pointer to SCMI entity handle
  */
 struct scmi_chan_info {
 	struct mbox_client cl;
@@ -108,7 +104,7 @@ struct scmi_chan_info {
 };
 
 /**
- * struct scmi_info - Structure representing a  SCMI instance
+ * struct scmi_info - Structure representing a SCMI instance
  *
  * @dev: Device pointer
  * @desc: SoC description for this instance
@@ -117,9 +113,9 @@ struct scmi_chan_info {
  *	implementation version and (sub-)vendor identification.
  * @minfo: Message info
  * @tx_idr: IDR object to map protocol id to channel info pointer
- * @protocols_imp: list of protocols implemented, currently maximum of
+ * @protocols_imp: List of protocols implemented, currently maximum of
  *	MAX_PROTOCOLS_IMP elements allocated by the base protocol
- * @node: list head
+ * @node: List head
  * @users: Number of users of this instance
  */
 struct scmi_info {
@@ -225,9 +221,7 @@ static void scmi_rx_callback(struct mbox_client *cl, void *m)
 
 	xfer_id = MSG_XTRACT_TOKEN(ioread32(&mem->msg_header));
 
-	/*
-	 * Are we even expecting this?
-	 */
+	/* Are we even expecting this? */
 	if (!test_bit(xfer_id, minfo->xfer_alloc_table)) {
 		dev_err(dev, "message for %d is not expected!\n", xfer_id);
 		return;
@@ -252,12 +246,14 @@ static void scmi_rx_callback(struct mbox_client *cl, void *m)
  *
  * @hdr: pointer to header containing all the information on message id,
  *	protocol id and sequence id.
+ *
+ * Return: 32-bit packed command header to be sent to the platform.
  */
 static inline u32 pack_scmi_header(struct scmi_msg_hdr *hdr)
 {
-	return ((hdr->id & MSG_ID_MASK) << MSG_ID_SHIFT) |
-	   ((hdr->seq & MSG_TOKEN_ID_MASK) << MSG_TOKEN_ID_SHIFT) |
-	   ((hdr->protocol_id & MSG_PROTOCOL_ID_MASK) << MSG_PROTOCOL_ID_SHIFT);
+	return FIELD_PREP(MSG_ID_MASK, hdr->id) |
+		FIELD_PREP(MSG_TOKEN_ID_MASK, hdr->seq) |
+		FIELD_PREP(MSG_PROTOCOL_ID_MASK, hdr->protocol_id);
 }
 
 /**
@@ -286,9 +282,9 @@ static void scmi_tx_prepare(struct mbox_client *cl, void *m)
 }
 
 /**
- * scmi_one_xfer_get() - Allocate one message
+ * scmi_xfer_get() - Allocate one message
  *
- * @handle: SCMI entity handle
+ * @handle: Pointer to SCMI entity handle
  *
  * Helper function which is used by various command functions that are
  * exposed to clients of this driver for allocating a message traffic event.
@@ -299,7 +295,7 @@ static void scmi_tx_prepare(struct mbox_client *cl, void *m)
  *
  * Return: 0 if all went fine, else corresponding error.
  */
-static struct scmi_xfer *scmi_one_xfer_get(const struct scmi_handle *handle)
+static struct scmi_xfer *scmi_xfer_get(const struct scmi_handle *handle)
 {
 	u16 xfer_id;
 	struct scmi_xfer *xfer;
@@ -328,14 +324,14 @@ static struct scmi_xfer *scmi_one_xfer_get(const struct scmi_handle *handle)
 }
 
 /**
- * scmi_one_xfer_put() - Release a message
+ * scmi_xfer_put() - Release a message
  *
- * @minfo: transfer info pointer
- * @xfer: message that was reserved by scmi_one_xfer_get
+ * @handle: Pointer to SCMI entity handle
+ * @xfer: message that was reserved by scmi_xfer_get
  *
  * This holds a spinlock to maintain integrity of internal data structures.
  */
-void scmi_one_xfer_put(const struct scmi_handle *handle, struct scmi_xfer *xfer)
+void scmi_xfer_put(const struct scmi_handle *handle, struct scmi_xfer *xfer)
 {
 	unsigned long flags;
 	struct scmi_info *info = handle_to_scmi_info(handle);
@@ -378,12 +374,12 @@ static bool scmi_xfer_done_no_timeout(const struct scmi_chan_info *cinfo,
 /**
  * scmi_do_xfer() - Do one transfer
  *
- * @info: Pointer to SCMI entity information
+ * @handle: Pointer to SCMI entity handle
  * @xfer: Transfer to initiate and wait for response
  *
  * Return: -ETIMEDOUT in case of no response, if transmit error,
- *   return corresponding error, else if all goes well,
- *   return 0.
+ *	return corresponding error, else if all goes well,
+ *	return 0.
  */
 int scmi_do_xfer(const struct scmi_handle *handle, struct scmi_xfer *xfer)
 {
@@ -440,22 +436,22 @@ int scmi_do_xfer(const struct scmi_handle *handle, struct scmi_xfer *xfer)
 }
 
 /**
- * scmi_one_xfer_init() - Allocate and initialise one message
+ * scmi_xfer_get_init() - Allocate and initialise one message
  *
- * @handle: SCMI entity handle
+ * @handle: Pointer to SCMI entity handle
  * @msg_id: Message identifier
- * @msg_prot_id: Protocol identifier for the message
+ * @prot_id: Protocol identifier for the message
  * @tx_size: transmit message size
  * @rx_size: receive message size
  * @p: pointer to the allocated and initialised message
  *
- * This function allocates the message using @scmi_one_xfer_get and
+ * This function allocates the message using @scmi_xfer_get and
  * initialise the header.
  *
  * Return: 0 if all went fine with @p pointing to message, else
  *	corresponding error.
  */
-int scmi_one_xfer_init(const struct scmi_handle *handle, u8 msg_id, u8 prot_id,
+int scmi_xfer_get_init(const struct scmi_handle *handle, u8 msg_id, u8 prot_id,
 		       size_t tx_size, size_t rx_size, struct scmi_xfer **p)
 {
 	int ret;
@@ -468,7 +464,7 @@ int scmi_one_xfer_init(const struct scmi_handle *handle, u8 msg_id, u8 prot_id,
 	    tx_size > info->desc->max_msg_size)
 		return -ERANGE;
 
-	xfer = scmi_one_xfer_get(handle);
+	xfer = scmi_xfer_get(handle);
 	if (IS_ERR(xfer)) {
 		ret = PTR_ERR(xfer);
 		dev_err(dev, "failed to get free message slot(%d)\n", ret);
@@ -482,13 +478,16 @@ int scmi_one_xfer_init(const struct scmi_handle *handle, u8 msg_id, u8 prot_id,
 	xfer->hdr.poll_completion = false;
 
 	*p = xfer;
+
 	return 0;
 }
 
 /**
  * scmi_version_get() - command to get the revision of the SCMI entity
  *
- * @handle: Handle to SCMI entity information
+ * @handle: Pointer to SCMI entity handle
+ * @protocol: Protocol identifier for the message
+ * @version: Holds returned version of protocol.
  *
  * Updates the SCMI information in the internal data structure.
  *
@@ -501,7 +500,7 @@ int scmi_version_get(const struct scmi_handle *handle, u8 protocol,
 	__le32 *rev_info;
 	struct scmi_xfer *t;
 
-	ret = scmi_one_xfer_init(handle, PROTOCOL_VERSION, protocol, 0,
+	ret = scmi_xfer_get_init(handle, PROTOCOL_VERSION, protocol, 0,
 				 sizeof(*version), &t);
 	if (ret)
 		return ret;
@@ -512,7 +511,7 @@ int scmi_version_get(const struct scmi_handle *handle, u8 protocol,
 		*version = le32_to_cpu(*rev_info);
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -540,12 +539,12 @@ scmi_is_protocol_implemented(const struct scmi_handle *handle, u8 prot_id)
 }
 
 /**
- * scmi_handle_get() - Get the  SCMI handle for a device
+ * scmi_handle_get() - Get the SCMI handle for a device
  *
  * @dev: pointer to device for which we want SCMI handle
  *
  * NOTE: The function does not track individual clients of the framework
- * and is expected to be maintained by caller of  SCMI protocol library.
+ * and is expected to be maintained by caller of SCMI protocol library.
  * scmi_handle_put must be balanced with successful scmi_handle_get
  *
  * Return: pointer to handle if successful, NULL on error
@@ -576,7 +575,7 @@ struct scmi_handle *scmi_handle_get(struct device *dev)
  * @handle: handle acquired by scmi_handle_get
  *
  * NOTE: The function does not track individual clients of the framework
- * and is expected to be maintained by caller of  SCMI protocol library.
+ * and is expected to be maintained by caller of SCMI protocol library.
  * scmi_handle_put must be balanced with successful scmi_handle_get
  *
  * Return: 0 is successfully released
@@ -599,7 +598,7 @@ int scmi_handle_put(const struct scmi_handle *handle)
 }
 
 static const struct scmi_desc scmi_generic_desc = {
-	.max_rx_timeout_ms = 30,	/* we may increase this if required */
+	.max_rx_timeout_ms = 30,	/* We may increase this if required */
 	.max_msg = 20,		/* Limited by MBOX_TX_QUEUE_LEN */
 	.max_msg_size = 128,
 };
@@ -621,9 +620,9 @@ static int scmi_xfer_info_init(struct scmi_info *sinfo)
 	struct scmi_xfers_info *info = &sinfo->minfo;
 
 	/* Pre-allocated messages, no more than what hdr.seq can support */
-	if (WARN_ON(desc->max_msg >= (MSG_TOKEN_ID_MASK + 1))) {
-		dev_err(dev, "Maximum message of %d exceeds supported %d\n",
-			desc->max_msg, MSG_TOKEN_ID_MASK + 1);
+	if (WARN_ON(desc->max_msg >= MSG_TOKEN_MAX)) {
+		dev_err(dev, "Maximum message of %d exceeds supported %ld\n",
+			desc->max_msg, MSG_TOKEN_MAX);
 		return -EINVAL;
 	}
 
@@ -637,8 +636,6 @@ static int scmi_xfer_info_init(struct scmi_info *sinfo)
 	if (!info->xfer_alloc_table)
 		return -ENOMEM;
 
-	bitmap_zero(info->xfer_alloc_table, desc->max_msg);
-
 	/* Pre-initialize the buffer pointer to pre-allocated buffers */
 	for (i = 0, xfer = info->xfer_block; i < desc->max_msg; i++, xfer++) {
 		xfer->rx.buf = devm_kcalloc(dev, sizeof(u8), desc->max_msg_size,
@@ -690,11 +687,12 @@ static int scmi_remove(struct platform_device *pdev)
 		list_del(&info->node);
 	mutex_unlock(&scmi_list_mutex);
 
-	if (!ret) {
-		/* Safe to free channels since no more users */
-		ret = idr_for_each(idr, scmi_mbox_free_channel, idr);
-		idr_destroy(&info->tx_idr);
-	}
+	if (ret)
+		return ret;
+
+	/* Safe to free channels since no more users */
+	ret = idr_for_each(idr, scmi_mbox_free_channel, idr);
+	idr_destroy(&info->tx_idr);
 
 	return ret;
 }
@@ -841,7 +839,8 @@ static int scmi_probe(struct platform_device *pdev)
 		if (of_property_read_u32(child, "reg", &prot_id))
 			continue;
 
-		prot_id &= MSG_PROTOCOL_ID_MASK;
+		if (!FIELD_FIT(MSG_PROTOCOL_ID_MASK, prot_id))
+			dev_err(dev, "Out of range protocol %d\n", prot_id);
 
 		if (!scmi_is_protocol_implemented(handle, prot_id)) {
 			dev_err(dev, "SCMI protocol %d not implemented\n",

drivers/firmware/arm_scmi/perf.c

@@ -115,7 +115,7 @@ static int scmi_perf_attributes_get(const struct scmi_handle *handle,
 	struct scmi_xfer *t;
 	struct scmi_msg_resp_perf_attributes *attr;
 
-	ret = scmi_one_xfer_init(handle, PROTOCOL_ATTRIBUTES,
+	ret = scmi_xfer_get_init(handle, PROTOCOL_ATTRIBUTES,
 				 SCMI_PROTOCOL_PERF, 0, sizeof(*attr), &t);
 	if (ret)
 		return ret;
@@ -133,7 +133,7 @@ static int scmi_perf_attributes_get(const struct scmi_handle *handle,
 		pi->stats_size = le32_to_cpu(attr->stats_size);
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -145,7 +145,7 @@ scmi_perf_domain_attributes_get(const struct scmi_handle *handle, u32 domain,
 	struct scmi_xfer *t;
 	struct scmi_msg_resp_perf_domain_attributes *attr;
 
-	ret = scmi_one_xfer_init(handle, PERF_DOMAIN_ATTRIBUTES,
+	ret = scmi_xfer_get_init(handle, PERF_DOMAIN_ATTRIBUTES,
 				 SCMI_PROTOCOL_PERF, sizeof(domain),
 				 sizeof(*attr), &t);
 	if (ret)
@@ -171,7 +171,7 @@ scmi_perf_domain_attributes_get(const struct scmi_handle *handle, u32 domain,
 		memcpy(dom_info->name, attr->name, SCMI_MAX_STR_SIZE);
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -194,7 +194,7 @@ scmi_perf_describe_levels_get(const struct scmi_handle *handle, u32 domain,
 	struct scmi_msg_perf_describe_levels *dom_info;
 	struct scmi_msg_resp_perf_describe_levels *level_info;
 
-	ret = scmi_one_xfer_init(handle, PERF_DESCRIBE_LEVELS,
+	ret = scmi_xfer_get_init(handle, PERF_DESCRIBE_LEVELS,
 				 SCMI_PROTOCOL_PERF, sizeof(*dom_info), 0, &t);
 	if (ret)
 		return ret;
@@ -237,7 +237,7 @@ scmi_perf_describe_levels_get(const struct scmi_handle *handle, u32 domain,
 	} while (num_returned && num_remaining);
 
 	perf_dom->opp_count = tot_opp_cnt;
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 
 	sort(perf_dom->opp, tot_opp_cnt, sizeof(*opp), opp_cmp_func, NULL);
 	return ret;
@@ -250,7 +250,7 @@ static int scmi_perf_limits_set(const struct scmi_handle *handle, u32 domain,
 	struct scmi_xfer *t;
 	struct scmi_perf_set_limits *limits;
 
-	ret = scmi_one_xfer_init(handle, PERF_LIMITS_SET, SCMI_PROTOCOL_PERF,
+	ret = scmi_xfer_get_init(handle, PERF_LIMITS_SET, SCMI_PROTOCOL_PERF,
 				 sizeof(*limits), 0, &t);
 	if (ret)
 		return ret;
@@ -262,7 +262,7 @@ static int scmi_perf_limits_set(const struct scmi_handle *handle, u32 domain,
 
 	ret = scmi_do_xfer(handle, t);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -273,7 +273,7 @@ static int scmi_perf_limits_get(const struct scmi_handle *handle, u32 domain,
 	struct scmi_xfer *t;
 	struct scmi_perf_get_limits *limits;
 
-	ret = scmi_one_xfer_init(handle, PERF_LIMITS_GET, SCMI_PROTOCOL_PERF,
+	ret = scmi_xfer_get_init(handle, PERF_LIMITS_GET, SCMI_PROTOCOL_PERF,
 				 sizeof(__le32), 0, &t);
 	if (ret)
 		return ret;
@@ -288,7 +288,7 @@ static int scmi_perf_limits_get(const struct scmi_handle *handle, u32 domain,
 		*min_perf = le32_to_cpu(limits->min_level);
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -299,7 +299,7 @@ static int scmi_perf_level_set(const struct scmi_handle *handle, u32 domain,
 	struct scmi_xfer *t;
 	struct scmi_perf_set_level *lvl;
 
-	ret = scmi_one_xfer_init(handle, PERF_LEVEL_SET, SCMI_PROTOCOL_PERF,
+	ret = scmi_xfer_get_init(handle, PERF_LEVEL_SET, SCMI_PROTOCOL_PERF,
 				 sizeof(*lvl), 0, &t);
 	if (ret)
 		return ret;
@@ -311,7 +311,7 @@ static int scmi_perf_level_set(const struct scmi_handle *handle, u32 domain,
 
 	ret = scmi_do_xfer(handle, t);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -321,7 +321,7 @@ static int scmi_perf_level_get(const struct scmi_handle *handle, u32 domain,
 	int ret;
 	struct scmi_xfer *t;
 
-	ret = scmi_one_xfer_init(handle, PERF_LEVEL_GET, SCMI_PROTOCOL_PERF,
+	ret = scmi_xfer_get_init(handle, PERF_LEVEL_GET, SCMI_PROTOCOL_PERF,
 				 sizeof(u32), sizeof(u32), &t);
 	if (ret)
 		return ret;
@@ -333,7 +333,7 @@ static int scmi_perf_level_get(const struct scmi_handle *handle, u32 domain,
 	if (!ret)
 		*level = le32_to_cpu(*(__le32 *)t->rx.buf);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -349,8 +349,8 @@ static int scmi_dev_domain_id(struct device *dev)
 	return clkspec.args[0];
 }
 
-static int scmi_dvfs_add_opps_to_device(const struct scmi_handle *handle,
-					struct device *dev)
+static int scmi_dvfs_device_opps_add(const struct scmi_handle *handle,
+				     struct device *dev)
 {
 	int idx, ret, domain;
 	unsigned long freq;
@@ -383,7 +383,7 @@ static int scmi_dvfs_add_opps_to_device(const struct scmi_handle *handle,
 	return 0;
 }
 
-static int scmi_dvfs_get_transition_latency(const struct scmi_handle *handle,
+static int scmi_dvfs_transition_latency_get(const struct scmi_handle *handle,
 					    struct device *dev)
 {
 	struct perf_dom_info *dom;
@@ -432,8 +432,8 @@ static struct scmi_perf_ops perf_ops = {
 	.level_set = scmi_perf_level_set,
 	.level_get = scmi_perf_level_get,
 	.device_domain_id = scmi_dev_domain_id,
-	.get_transition_latency = scmi_dvfs_get_transition_latency,
-	.add_opps_to_device = scmi_dvfs_add_opps_to_device,
+	.transition_latency_get = scmi_dvfs_transition_latency_get,
+	.device_opps_add = scmi_dvfs_device_opps_add,
 	.freq_set = scmi_dvfs_freq_set,
 	.freq_get = scmi_dvfs_freq_get,
 };

drivers/firmware/arm_scmi/power.c

@@ -63,7 +63,7 @@ static int scmi_power_attributes_get(const struct scmi_handle *handle,
 	struct scmi_xfer *t;
 	struct scmi_msg_resp_power_attributes *attr;
 
-	ret = scmi_one_xfer_init(handle, PROTOCOL_ATTRIBUTES,
+	ret = scmi_xfer_get_init(handle, PROTOCOL_ATTRIBUTES,
 				 SCMI_PROTOCOL_POWER, 0, sizeof(*attr), &t);
 	if (ret)
 		return ret;
@@ -78,7 +78,7 @@ static int scmi_power_attributes_get(const struct scmi_handle *handle,
 		pi->stats_size = le32_to_cpu(attr->stats_size);
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -90,7 +90,7 @@ scmi_power_domain_attributes_get(const struct scmi_handle *handle, u32 domain,
 	struct scmi_xfer *t;
 	struct scmi_msg_resp_power_domain_attributes *attr;
 
-	ret = scmi_one_xfer_init(handle, POWER_DOMAIN_ATTRIBUTES,
+	ret = scmi_xfer_get_init(handle, POWER_DOMAIN_ATTRIBUTES,
 				 SCMI_PROTOCOL_POWER, sizeof(domain),
 				 sizeof(*attr), &t);
 	if (ret)
@@ -109,7 +109,7 @@ scmi_power_domain_attributes_get(const struct scmi_handle *handle, u32 domain,
 		memcpy(dom_info->name, attr->name, SCMI_MAX_STR_SIZE);
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -120,7 +120,7 @@ scmi_power_state_set(const struct scmi_handle *handle, u32 domain, u32 state)
 	struct scmi_xfer *t;
 	struct scmi_power_set_state *st;
 
-	ret = scmi_one_xfer_init(handle, POWER_STATE_SET, SCMI_PROTOCOL_POWER,
+	ret = scmi_xfer_get_init(handle, POWER_STATE_SET, SCMI_PROTOCOL_POWER,
 				 sizeof(*st), 0, &t);
 	if (ret)
 		return ret;
@@ -132,7 +132,7 @@ scmi_power_state_set(const struct scmi_handle *handle, u32 domain, u32 state)
 
 	ret = scmi_do_xfer(handle, t);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -142,7 +142,7 @@ scmi_power_state_get(const struct scmi_handle *handle, u32 domain, u32 *state)
 	int ret;
 	struct scmi_xfer *t;
 
-	ret = scmi_one_xfer_init(handle, POWER_STATE_GET, SCMI_PROTOCOL_POWER,
+	ret = scmi_xfer_get_init(handle, POWER_STATE_GET, SCMI_PROTOCOL_POWER,
 				 sizeof(u32), sizeof(u32), &t);
 	if (ret)
 		return ret;
@@ -153,7 +153,7 @@ scmi_power_state_get(const struct scmi_handle *handle, u32 domain, u32 *state)
 	if (!ret)
 		*state = le32_to_cpu(*(__le32 *)t->rx.buf);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 

drivers/firmware/arm_scmi/sensors.c

@@ -79,7 +79,7 @@ static int scmi_sensor_attributes_get(const struct scmi_handle *handle,
 	struct scmi_xfer *t;
 	struct scmi_msg_resp_sensor_attributes *attr;
 
-	ret = scmi_one_xfer_init(handle, PROTOCOL_ATTRIBUTES,
+	ret = scmi_xfer_get_init(handle, PROTOCOL_ATTRIBUTES,
 				 SCMI_PROTOCOL_SENSOR, 0, sizeof(*attr), &t);
 	if (ret)
 		return ret;
@@ -95,7 +95,7 @@ static int scmi_sensor_attributes_get(const struct scmi_handle *handle,
 		si->reg_size = le32_to_cpu(attr->reg_size);
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -108,7 +108,7 @@ static int scmi_sensor_description_get(const struct scmi_handle *handle,
 	struct scmi_xfer *t;
 	struct scmi_msg_resp_sensor_description *buf;
 
-	ret = scmi_one_xfer_init(handle, SENSOR_DESCRIPTION_GET,
+	ret = scmi_xfer_get_init(handle, SENSOR_DESCRIPTION_GET,
 				 SCMI_PROTOCOL_SENSOR, sizeof(__le32), 0, &t);
 	if (ret)
 		return ret;
@@ -150,7 +150,7 @@ static int scmi_sensor_description_get(const struct scmi_handle *handle,
 		 */
 	} while (num_returned && num_remaining);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -162,7 +162,7 @@ scmi_sensor_configuration_set(const struct scmi_handle *handle, u32 sensor_id)
 	struct scmi_xfer *t;
 	struct scmi_msg_set_sensor_config *cfg;
 
-	ret = scmi_one_xfer_init(handle, SENSOR_CONFIG_SET,
+	ret = scmi_xfer_get_init(handle, SENSOR_CONFIG_SET,
 				 SCMI_PROTOCOL_SENSOR, sizeof(*cfg), 0, &t);
 	if (ret)
 		return ret;
@@ -173,7 +173,7 @@ scmi_sensor_configuration_set(const struct scmi_handle *handle, u32 sensor_id)
 
 	ret = scmi_do_xfer(handle, t);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -185,7 +185,7 @@ static int scmi_sensor_trip_point_set(const struct scmi_handle *handle,
 	struct scmi_xfer *t;
 	struct scmi_msg_set_sensor_trip_point *trip;
 
-	ret = scmi_one_xfer_init(handle, SENSOR_TRIP_POINT_SET,
+	ret = scmi_xfer_get_init(handle, SENSOR_TRIP_POINT_SET,
 				 SCMI_PROTOCOL_SENSOR, sizeof(*trip), 0, &t);
 	if (ret)
 		return ret;
@@ -198,7 +198,7 @@ static int scmi_sensor_trip_point_set(const struct scmi_handle *handle,
 
 	ret = scmi_do_xfer(handle, t);
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 
@@ -209,7 +209,7 @@ static int scmi_sensor_reading_get(const struct scmi_handle *handle,
 	struct scmi_xfer *t;
 	struct scmi_msg_sensor_reading_get *sensor;
 
-	ret = scmi_one_xfer_init(handle, SENSOR_READING_GET,
+	ret = scmi_xfer_get_init(handle, SENSOR_READING_GET,
 				 SCMI_PROTOCOL_SENSOR, sizeof(*sensor),
 				 sizeof(u64), &t);
 	if (ret)
@@ -227,7 +227,7 @@ static int scmi_sensor_reading_get(const struct scmi_handle *handle,
 		*value |= (u64)le32_to_cpu(*(pval + 1)) << 32;
 	}
 
-	scmi_one_xfer_put(handle, t);
+	scmi_xfer_put(handle, t);
 	return ret;
 }
 

drivers/firmware/ti_sci.c

@@ -1,17 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Texas Instruments System Control Interface Protocol Driver
  *
  * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
  *	Nishanth Menon
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #define pr_fmt(fmt) "%s: " fmt, __func__

drivers/firmware/ti_sci.h

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: BSD-3-Clause
 /*
  * Texas Instruments System Control Interface (TISCI) Protocol
  *
@@ -6,35 +7,6 @@
  * See: http://processors.wiki.ti.com/index.php/TISCI for details
  *
  * Copyright (C)  2015-2016 Texas Instruments Incorporated - http://www.ti.com/
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- *   Redistributions of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- *
- *   Redistributions in binary form must reproduce the above copyright
- *   notice, this list of conditions and the following disclaimer in the
- *   documentation and/or other materials provided with the
- *   distribution.
- *
- *   Neither the name of Texas Instruments Incorporated nor the names of
- *   its contributors may be used to endorse or promote products derived
- *   from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
  */
 
 #ifndef __TI_SCI_H

drivers/memory/Kconfig

@@ -104,16 +104,6 @@ config MVEBU_DEVBUS
 	  Armada 370 and Armada XP. This controller allows to handle flash
 	  devices such as NOR, NAND, SRAM, and FPGA.
 
-config TEGRA20_MC
-	bool "Tegra20 Memory Controller(MC) driver"
-	default y
-	depends on ARCH_TEGRA_2x_SOC
-	help
-	  This driver is for the Memory Controller(MC) module available
-	  in Tegra20 SoCs, mainly for a address translation fault
-	  analysis, especially for IOMMU/GART(Graphics Address
-	  Relocation Table) module.
-
 config FSL_CORENET_CF
 	tristate "Freescale CoreNet Error Reporting"
 	depends on FSL_SOC_BOOKE

drivers/memory/Makefile

@@ -16,7 +16,6 @@ obj-$(CONFIG_OMAP_GPMC)		+= omap-gpmc.o
 obj-$(CONFIG_FSL_CORENET_CF)	+= fsl-corenet-cf.o
 obj-$(CONFIG_FSL_IFC)		+= fsl_ifc.o
 obj-$(CONFIG_MVEBU_DEVBUS)	+= mvebu-devbus.o
-obj-$(CONFIG_TEGRA20_MC)	+= tegra20-mc.o
 obj-$(CONFIG_JZ4780_NEMC)	+= jz4780-nemc.o
 obj-$(CONFIG_MTK_SMI)		+= mtk-smi.o
 obj-$(CONFIG_DA8XX_DDRCTL)	+= da8xx-ddrctl.o

drivers/memory/brcmstb_dpfe.c

@@ -176,7 +176,6 @@ struct private_data {
 	void __iomem *dmem;
 	void __iomem *imem;
 	struct device *dev;
-	unsigned int index;
 	struct mutex lock;
 };
 
@@ -674,10 +673,8 @@ static int brcmstb_dpfe_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct private_data *priv;
-	struct device *dpfe_dev;
 	struct init_data init;
 	struct resource *res;
-	u32 index;
 	int ret;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@@ -687,11 +684,6 @@ static int brcmstb_dpfe_probe(struct platform_device *pdev)
 	mutex_init(&priv->lock);
 	platform_set_drvdata(pdev, priv);
 
-	/* Cell index is optional; default to 0 if not present. */
-	ret = of_property_read_u32(dev->of_node, "cell-index", &index);
-	if (ret)
-		index = 0;
-
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dpfe-cpu");
 	priv->regs = devm_ioremap_resource(dev, res);
 	if (IS_ERR(priv->regs)) {
@@ -715,35 +707,20 @@ static int brcmstb_dpfe_probe(struct platform_device *pdev)
 
 	ret = brcmstb_dpfe_download_firmware(pdev, &init);
 	if (ret)
-		goto err;
-
-	dpfe_dev = devm_kzalloc(dev, sizeof(*dpfe_dev), GFP_KERNEL);
-	if (!dpfe_dev) {
-		ret = -ENOMEM;
-		goto err;
-	}
-
-	priv->dev = dpfe_dev;
-	priv->index = index;
+		return ret;
 
-	dpfe_dev->parent = dev;
-	dpfe_dev->groups = dpfe_groups;
-	dpfe_dev->of_node = dev->of_node;
-	dev_set_drvdata(dpfe_dev, priv);
-	dev_set_name(dpfe_dev, "dpfe%u", index);
+	ret = sysfs_create_groups(&pdev->dev.kobj, dpfe_groups);
+	if (!ret)
+		dev_info(dev, "registered.\n");
 
-	ret = device_register(dpfe_dev);
-	if (ret)
-		goto err;
+	return ret;
+}
 
-	dev_info(dev, "registered.\n");
+static int brcmstb_dpfe_remove(struct platform_device *pdev)
+{
+	sysfs_remove_groups(&pdev->dev.kobj, dpfe_groups);
 
 	return 0;
-
-err:
-	dev_err(dev, "failed to initialize -- error %d\n", ret);
-
-	return ret;
 }
 
 static const struct of_device_id brcmstb_dpfe_of_match[] = {
@@ -758,6 +735,7 @@ static struct platform_driver brcmstb_dpfe_driver = {
 		.of_match_table = brcmstb_dpfe_of_match,
 	},
 	.probe = brcmstb_dpfe_probe,
+	.remove	= brcmstb_dpfe_remove,
 	.resume = brcmstb_dpfe_resume,
 };
 

drivers/memory/omap-gpmc.c

@@ -2060,8 +2060,8 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
 	 * timings.
 	 */
 	name = gpmc_cs_get_name(cs);
-	if (name && child->name && of_node_cmp(child->name, name) == 0)
-			goto no_timings;
+	if (name && of_node_cmp(child->name, name) == 0)
+		goto no_timings;
 
 	ret = gpmc_cs_request(cs, resource_size(&res), &base);
 	if (ret < 0) {

drivers/memory/tegra/Makefile

@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 tegra-mc-y := mc.o
 
+tegra-mc-$(CONFIG_ARCH_TEGRA_2x_SOC)  += tegra20.o
 tegra-mc-$(CONFIG_ARCH_TEGRA_3x_SOC)  += tegra30.o
 tegra-mc-$(CONFIG_ARCH_TEGRA_114_SOC) += tegra114.o
 tegra-mc-$(CONFIG_ARCH_TEGRA_124_SOC) += tegra124.o

drivers/memory/tegra/mc.c

@@ -7,6 +7,7 @@
  */
 
 #include <linux/clk.h>
+#include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -20,14 +21,6 @@
 #include "mc.h"
 
 #define MC_INTSTATUS 0x000
-#define  MC_INT_DECERR_MTS (1 << 16)
-#define  MC_INT_SECERR_SEC (1 << 13)
-#define  MC_INT_DECERR_VPR (1 << 12)
-#define  MC_INT_INVALID_APB_ASID_UPDATE (1 << 11)
-#define  MC_INT_INVALID_SMMU_PAGE (1 << 10)
-#define  MC_INT_ARBITRATION_EMEM (1 << 9)
-#define  MC_INT_SECURITY_VIOLATION (1 << 8)
-#define  MC_INT_DECERR_EMEM (1 << 6)
 
 #define MC_INTMASK 0x004
 
@@ -45,6 +38,9 @@
 
 #define MC_ERR_ADR 0x0c
 
+#define MC_DECERR_EMEM_OTHERS_STATUS	0x58
+#define MC_SECURITY_VIOLATION_STATUS	0x74
+
 #define MC_EMEM_ARB_CFG 0x90
 #define  MC_EMEM_ARB_CFG_CYCLES_PER_UPDATE(x)	(((x) & 0x1ff) << 0)
 #define  MC_EMEM_ARB_CFG_CYCLES_PER_UPDATE_MASK	0x1ff
@@ -54,6 +50,9 @@
 #define MC_EMEM_ADR_CFG_EMEM_NUMDEV BIT(0)
 
 static const struct of_device_id tegra_mc_of_match[] = {
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+	{ .compatible = "nvidia,tegra20-mc", .data = &tegra20_mc_soc },
+#endif
 #ifdef CONFIG_ARCH_TEGRA_3x_SOC
 	{ .compatible = "nvidia,tegra30-mc", .data = &tegra30_mc_soc },
 #endif
@@ -73,6 +72,207 @@ static const struct of_device_id tegra_mc_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, tegra_mc_of_match);
 
+static int terga_mc_block_dma_common(struct tegra_mc *mc,
+				     const struct tegra_mc_reset *rst)
+{
+	unsigned long flags;
+	u32 value;
+
+	spin_lock_irqsave(&mc->lock, flags);
+
+	value = mc_readl(mc, rst->control) | BIT(rst->bit);
+	mc_writel(mc, value, rst->control);
+
+	spin_unlock_irqrestore(&mc->lock, flags);
+
+	return 0;
+}
+
+static bool terga_mc_dma_idling_common(struct tegra_mc *mc,
+				       const struct tegra_mc_reset *rst)
+{
+	return (mc_readl(mc, rst->status) & BIT(rst->bit)) != 0;
+}
+
+static int terga_mc_unblock_dma_common(struct tegra_mc *mc,
+				       const struct tegra_mc_reset *rst)
+{
+	unsigned long flags;
+	u32 value;
+
+	spin_lock_irqsave(&mc->lock, flags);
+
+	value = mc_readl(mc, rst->control) & ~BIT(rst->bit);
+	mc_writel(mc, value, rst->control);
+
+	spin_unlock_irqrestore(&mc->lock, flags);
+
+	return 0;
+}
+
+static int terga_mc_reset_status_common(struct tegra_mc *mc,
+					const struct tegra_mc_reset *rst)
+{
+	return (mc_readl(mc, rst->control) & BIT(rst->bit)) != 0;
+}
+
+const struct tegra_mc_reset_ops terga_mc_reset_ops_common = {
+	.block_dma = terga_mc_block_dma_common,
+	.dma_idling = terga_mc_dma_idling_common,
+	.unblock_dma = terga_mc_unblock_dma_common,
+	.reset_status = terga_mc_reset_status_common,
+};
+
+static inline struct tegra_mc *reset_to_mc(struct reset_controller_dev *rcdev)
+{
+	return container_of(rcdev, struct tegra_mc, reset);
+}
+
+static const struct tegra_mc_reset *tegra_mc_reset_find(struct tegra_mc *mc,
+							unsigned long id)
+{
+	unsigned int i;
+
+	for (i = 0; i < mc->soc->num_resets; i++)
+		if (mc->soc->resets[i].id == id)
+			return &mc->soc->resets[i];
+
+	return NULL;
+}
+
+static int tegra_mc_hotreset_assert(struct reset_controller_dev *rcdev,
+				    unsigned long id)
+{
+	struct tegra_mc *mc = reset_to_mc(rcdev);
+	const struct tegra_mc_reset_ops *rst_ops;
+	const struct tegra_mc_reset *rst;
+	int retries = 500;
+	int err;
+
+	rst = tegra_mc_reset_find(mc, id);
+	if (!rst)
+		return -ENODEV;
+
+	rst_ops = mc->soc->reset_ops;
+	if (!rst_ops)
+		return -ENODEV;
+
+	if (rst_ops->block_dma) {
+		/* block clients DMA requests */
+		err = rst_ops->block_dma(mc, rst);
+		if (err) {
+			dev_err(mc->dev, "Failed to block %s DMA: %d\n",
+				rst->name, err);
+			return err;
+		}
+	}
+
+	if (rst_ops->dma_idling) {
+		/* wait for completion of the outstanding DMA requests */
+		while (!rst_ops->dma_idling(mc, rst)) {
+			if (!retries--) {
+				dev_err(mc->dev, "Failed to flush %s DMA\n",
+					rst->name);
+				return -EBUSY;
+			}
+
+			usleep_range(10, 100);
+		}
+	}
+
+	if (rst_ops->hotreset_assert) {
+		/* clear clients DMA requests sitting before arbitration */
+		err = rst_ops->hotreset_assert(mc, rst);
+		if (err) {
+			dev_err(mc->dev, "Failed to hot reset %s: %d\n",
+				rst->name, err);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+static int tegra_mc_hotreset_deassert(struct reset_controller_dev *rcdev,
+				      unsigned long id)
+{
+	struct tegra_mc *mc = reset_to_mc(rcdev);
+	const struct tegra_mc_reset_ops *rst_ops;
+	const struct tegra_mc_reset *rst;
+	int err;
+
+	rst = tegra_mc_reset_find(mc, id);
+	if (!rst)
+		return -ENODEV;
+
+	rst_ops = mc->soc->reset_ops;
+	if (!rst_ops)
+		return -ENODEV;
+
+	if (rst_ops->hotreset_deassert) {
+		/* take out client from hot reset */
+		err = rst_ops->hotreset_deassert(mc, rst);
+		if (err) {
+			dev_err(mc->dev, "Failed to deassert hot reset %s: %d\n",
+				rst->name, err);
+			return err;
+		}
+	}
+
+	if (rst_ops->unblock_dma) {
+		/* allow new DMA requests to proceed to arbitration */
+		err = rst_ops->unblock_dma(mc, rst);
+		if (err) {
+			dev_err(mc->dev, "Failed to unblock %s DMA : %d\n",
+				rst->name, err);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+static int tegra_mc_hotreset_status(struct reset_controller_dev *rcdev,
+				    unsigned long id)
+{
+	struct tegra_mc *mc = reset_to_mc(rcdev);
+	const struct tegra_mc_reset_ops *rst_ops;
+	const struct tegra_mc_reset *rst;
+
+	rst = tegra_mc_reset_find(mc, id);
+	if (!rst)
+		return -ENODEV;
+
+	rst_ops = mc->soc->reset_ops;
+	if (!rst_ops)
+		return -ENODEV;
+
+	return rst_ops->reset_status(mc, rst);
+}
+
+static const struct reset_control_ops tegra_mc_reset_ops = {
+	.assert = tegra_mc_hotreset_assert,
+	.deassert = tegra_mc_hotreset_deassert,
+	.status = tegra_mc_hotreset_status,
+};
+
+static int tegra_mc_reset_setup(struct tegra_mc *mc)
+{
+	int err;
+
+	mc->reset.ops = &tegra_mc_reset_ops;
+	mc->reset.owner = THIS_MODULE;
+	mc->reset.of_node = mc->dev->of_node;
+	mc->reset.of_reset_n_cells = 1;
+	mc->reset.nr_resets = mc->soc->num_resets;
+
+	err = reset_controller_register(&mc->reset);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
 static int tegra_mc_setup_latency_allowance(struct tegra_mc *mc)
 {
 	unsigned long long tick;
@@ -229,6 +429,7 @@ static int tegra_mc_setup_timings(struct tegra_mc *mc)
 static const char *const status_names[32] = {
 	[ 1] = "External interrupt",
 	[ 6] = "EMEM address decode error",
+	[ 7] = "GART page fault",
 	[ 8] = "Security violation",
 	[ 9] = "EMEM arbitration error",
 	[10] = "Page fault",
@@ -248,12 +449,13 @@ static const char *const error_names[8] = {
 static irqreturn_t tegra_mc_irq(int irq, void *data)
 {
 	struct tegra_mc *mc = data;
-	unsigned long status, mask;
+	unsigned long status;
 	unsigned int bit;
 
 	/* mask all interrupts to avoid flooding */
-	status = mc_readl(mc, MC_INTSTATUS);
-	mask = mc_readl(mc, MC_INTMASK);
+	status = mc_readl(mc, MC_INTSTATUS) & mc->soc->intmask;
+	if (!status)
+		return IRQ_NONE;
 
 	for_each_set_bit(bit, &status, 32) {
 		const char *error = status_names[bit] ?: "unknown";
@@ -341,12 +543,78 @@ static irqreturn_t tegra_mc_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
+static __maybe_unused irqreturn_t tegra20_mc_irq(int irq, void *data)
+{
+	struct tegra_mc *mc = data;
+	unsigned long status;
+	unsigned int bit;
+
+	/* mask all interrupts to avoid flooding */
+	status = mc_readl(mc, MC_INTSTATUS) & mc->soc->intmask;
+	if (!status)
+		return IRQ_NONE;
+
+	for_each_set_bit(bit, &status, 32) {
+		const char *direction = "read", *secure = "";
+		const char *error = status_names[bit];
+		const char *client, *desc;
+		phys_addr_t addr;
+		u32 value, reg;
+		u8 id, type;
+
+		switch (BIT(bit)) {
+		case MC_INT_DECERR_EMEM:
+			reg = MC_DECERR_EMEM_OTHERS_STATUS;
+			value = mc_readl(mc, reg);
+
+			id = value & mc->soc->client_id_mask;
+			desc = error_names[2];
+
+			if (value & BIT(31))
+				direction = "write";
+			break;
+
+		case MC_INT_INVALID_GART_PAGE:
+			dev_err_ratelimited(mc->dev, "%s\n", error);
+			continue;
+
+		case MC_INT_SECURITY_VIOLATION:
+			reg = MC_SECURITY_VIOLATION_STATUS;
+			value = mc_readl(mc, reg);
+
+			id = value & mc->soc->client_id_mask;
+			type = (value & BIT(30)) ? 4 : 3;
+			desc = error_names[type];
+			secure = "secure ";
+
+			if (value & BIT(31))
+				direction = "write";
+			break;
+
+		default:
+			continue;
+		}
+
+		client = mc->soc->clients[id].name;
+		addr = mc_readl(mc, reg + sizeof(u32));
+
+		dev_err_ratelimited(mc->dev, "%s: %s%s @%pa: %s (%s)\n",
+				    client, secure, direction, &addr, error,
+				    desc);
+	}
+
+	/* clear interrupts */
+	mc_writel(mc, status, MC_INTSTATUS);
+
+	return IRQ_HANDLED;
+}
+
 static int tegra_mc_probe(struct platform_device *pdev)
 {
 	const struct of_device_id *match;
 	struct resource *res;
 	struct tegra_mc *mc;
-	u32 value;
+	void *isr;
 	int err;
 
 	match = of_match_node(tegra_mc_of_match, pdev->dev.of_node);
@@ -358,6 +626,7 @@ static int tegra_mc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	platform_set_drvdata(pdev, mc);
+	spin_lock_init(&mc->lock);
 	mc->soc = match->data;
 	mc->dev = &pdev->dev;
 
@@ -369,18 +638,32 @@ static int tegra_mc_probe(struct platform_device *pdev)
 	if (IS_ERR(mc->regs))
 		return PTR_ERR(mc->regs);
 
-	mc->clk = devm_clk_get(&pdev->dev, "mc");
-	if (IS_ERR(mc->clk)) {
-		dev_err(&pdev->dev, "failed to get MC clock: %ld\n",
-			PTR_ERR(mc->clk));
-		return PTR_ERR(mc->clk);
-	}
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+	if (mc->soc == &tegra20_mc_soc) {
+		res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+		mc->regs2 = devm_ioremap_resource(&pdev->dev, res);
+		if (IS_ERR(mc->regs2))
+			return PTR_ERR(mc->regs2);
 
-	err = tegra_mc_setup_latency_allowance(mc);
-	if (err < 0) {
-		dev_err(&pdev->dev, "failed to setup latency allowance: %d\n",
-			err);
-		return err;
+		isr = tegra20_mc_irq;
+	} else
+#endif
+	{
+		mc->clk = devm_clk_get(&pdev->dev, "mc");
+		if (IS_ERR(mc->clk)) {
+			dev_err(&pdev->dev, "failed to get MC clock: %ld\n",
+				PTR_ERR(mc->clk));
+			return PTR_ERR(mc->clk);
+		}
+
+		err = tegra_mc_setup_latency_allowance(mc);
+		if (err < 0) {
+			dev_err(&pdev->dev, "failed to setup latency allowance: %d\n",
+				err);
+			return err;
+		}
+
+		isr = tegra_mc_irq;
 	}
 
 	err = tegra_mc_setup_timings(mc);
@@ -389,13 +672,11 @@ static int tegra_mc_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	if (IS_ENABLED(CONFIG_TEGRA_IOMMU_SMMU)) {
-		mc->smmu = tegra_smmu_probe(&pdev->dev, mc->soc->smmu, mc);
-		if (IS_ERR(mc->smmu)) {
-			dev_err(&pdev->dev, "failed to probe SMMU: %ld\n",
-				PTR_ERR(mc->smmu));
-			return PTR_ERR(mc->smmu);
-		}
+	err = tegra_mc_reset_setup(mc);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to register reset controller: %d\n",
+			err);
+		return err;
 	}
 
 	mc->irq = platform_get_irq(pdev, 0);
@@ -404,7 +685,11 @@ static int tegra_mc_probe(struct platform_device *pdev)
 		return mc->irq;
 	}
 
-	err = devm_request_irq(&pdev->dev, mc->irq, tegra_mc_irq, IRQF_SHARED,
+	WARN(!mc->soc->client_id_mask, "Missing client ID mask for this SoC\n");
+
+	mc_writel(mc, mc->soc->intmask, MC_INTMASK);
+
+	err = devm_request_irq(&pdev->dev, mc->irq, isr, IRQF_SHARED,
 			       dev_name(&pdev->dev), mc);
 	if (err < 0) {
 		dev_err(&pdev->dev, "failed to request IRQ#%u: %d\n", mc->irq,
@@ -412,13 +697,14 @@ static int tegra_mc_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	WARN(!mc->soc->client_id_mask, "Missing client ID mask for this SoC\n");
-
-	value = MC_INT_DECERR_MTS | MC_INT_SECERR_SEC | MC_INT_DECERR_VPR |
-		MC_INT_INVALID_APB_ASID_UPDATE | MC_INT_INVALID_SMMU_PAGE |
-		MC_INT_SECURITY_VIOLATION | MC_INT_DECERR_EMEM;
-
-	mc_writel(mc, value, MC_INTMASK);
+	if (IS_ENABLED(CONFIG_TEGRA_IOMMU_SMMU)) {
+		mc->smmu = tegra_smmu_probe(&pdev->dev, mc->soc->smmu, mc);
+		if (IS_ERR(mc->smmu)) {
+			dev_err(&pdev->dev, "failed to probe SMMU: %ld\n",
+				PTR_ERR(mc->smmu));
+			return PTR_ERR(mc->smmu);
+		}
+	}
 
 	return 0;
 }

drivers/memory/tegra/mc.h

@@ -14,17 +14,39 @@
 
 #include <soc/tegra/mc.h>
 
+#define MC_INT_DECERR_MTS (1 << 16)
+#define MC_INT_SECERR_SEC (1 << 13)
+#define MC_INT_DECERR_VPR (1 << 12)
+#define MC_INT_INVALID_APB_ASID_UPDATE (1 << 11)
+#define MC_INT_INVALID_SMMU_PAGE (1 << 10)
+#define MC_INT_ARBITRATION_EMEM (1 << 9)
+#define MC_INT_SECURITY_VIOLATION (1 << 8)
+#define MC_INT_INVALID_GART_PAGE (1 << 7)
+#define MC_INT_DECERR_EMEM (1 << 6)
+
 static inline u32 mc_readl(struct tegra_mc *mc, unsigned long offset)
 {
+	if (mc->regs2 && offset >= 0x24)
+		return readl(mc->regs2 + offset - 0x3c);
+
 	return readl(mc->regs + offset);
 }
 
 static inline void mc_writel(struct tegra_mc *mc, u32 value,
 			     unsigned long offset)
 {
+	if (mc->regs2 && offset >= 0x24)
+		return writel(value, mc->regs2 + offset - 0x3c);
+
 	writel(value, mc->regs + offset);
 }
 
+extern const struct tegra_mc_reset_ops terga_mc_reset_ops_common;
+
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+extern const struct tegra_mc_soc tegra20_mc_soc;
+#endif
+
 #ifdef CONFIG_ARCH_TEGRA_3x_SOC
 extern const struct tegra_mc_soc tegra30_mc_soc;
 #endif

drivers/memory/tegra/tegra114.c

@@ -938,6 +938,34 @@ static const struct tegra_smmu_soc tegra114_smmu_soc = {
 	.num_asids = 4,
 };
 
+#define TEGRA114_MC_RESET(_name, _control, _status, _bit)	\
+	{							\
+		.name = #_name,					\
+		.id = TEGRA114_MC_RESET_##_name,		\
+		.control = _control,				\
+		.status = _status,				\
+		.bit = _bit,					\
+	}
+
+static const struct tegra_mc_reset tegra114_mc_resets[] = {
+	TEGRA114_MC_RESET(AVPC,     0x200, 0x204,  1),
+	TEGRA114_MC_RESET(DC,       0x200, 0x204,  2),
+	TEGRA114_MC_RESET(DCB,      0x200, 0x204,  3),
+	TEGRA114_MC_RESET(EPP,      0x200, 0x204,  4),
+	TEGRA114_MC_RESET(2D,       0x200, 0x204,  5),
+	TEGRA114_MC_RESET(HC,       0x200, 0x204,  6),
+	TEGRA114_MC_RESET(HDA,      0x200, 0x204,  7),
+	TEGRA114_MC_RESET(ISP,      0x200, 0x204,  8),
+	TEGRA114_MC_RESET(MPCORE,   0x200, 0x204,  9),
+	TEGRA114_MC_RESET(MPCORELP, 0x200, 0x204, 10),
+	TEGRA114_MC_RESET(MPE,      0x200, 0x204, 11),
+	TEGRA114_MC_RESET(3D,       0x200, 0x204, 12),
+	TEGRA114_MC_RESET(3D2,      0x200, 0x204, 13),
+	TEGRA114_MC_RESET(PPCS,     0x200, 0x204, 14),
+	TEGRA114_MC_RESET(VDE,      0x200, 0x204, 16),
+	TEGRA114_MC_RESET(VI,       0x200, 0x204, 17),
+};
+
 const struct tegra_mc_soc tegra114_mc_soc = {
 	.clients = tegra114_mc_clients,
 	.num_clients = ARRAY_SIZE(tegra114_mc_clients),
@@ -945,4 +973,9 @@ const struct tegra_mc_soc tegra114_mc_soc = {
 	.atom_size = 32,
 	.client_id_mask = 0x7f,
 	.smmu = &tegra114_smmu_soc,
+	.intmask = MC_INT_INVALID_SMMU_PAGE | MC_INT_SECURITY_VIOLATION |
+		   MC_INT_DECERR_EMEM,
+	.reset_ops = &terga_mc_reset_ops_common,
+	.resets = tegra114_mc_resets,
+	.num_resets = ARRAY_SIZE(tegra114_mc_resets),
 };

drivers/memory/tegra/tegra124.c

@@ -1012,6 +1012,42 @@ static const struct tegra_smmu_group_soc tegra124_groups[] = {
 	},
 };
 
+#define TEGRA124_MC_RESET(_name, _control, _status, _bit)	\
+	{							\
+		.name = #_name,					\
+		.id = TEGRA124_MC_RESET_##_name,		\
+		.control = _control,				\
+		.status = _status,				\
+		.bit = _bit,					\
+	}
+
+static const struct tegra_mc_reset tegra124_mc_resets[] = {
+	TEGRA124_MC_RESET(AFI,       0x200, 0x204,  0),
+	TEGRA124_MC_RESET(AVPC,      0x200, 0x204,  1),
+	TEGRA124_MC_RESET(DC,        0x200, 0x204,  2),
+	TEGRA124_MC_RESET(DCB,       0x200, 0x204,  3),
+	TEGRA124_MC_RESET(HC,        0x200, 0x204,  6),
+	TEGRA124_MC_RESET(HDA,       0x200, 0x204,  7),
+	TEGRA124_MC_RESET(ISP2,      0x200, 0x204,  8),
+	TEGRA124_MC_RESET(MPCORE,    0x200, 0x204,  9),
+	TEGRA124_MC_RESET(MPCORELP,  0x200, 0x204, 10),
+	TEGRA124_MC_RESET(MSENC,     0x200, 0x204, 11),
+	TEGRA124_MC_RESET(PPCS,      0x200, 0x204, 14),
+	TEGRA124_MC_RESET(SATA,      0x200, 0x204, 15),
+	TEGRA124_MC_RESET(VDE,       0x200, 0x204, 16),
+	TEGRA124_MC_RESET(VI,        0x200, 0x204, 17),
+	TEGRA124_MC_RESET(VIC,       0x200, 0x204, 18),
+	TEGRA124_MC_RESET(XUSB_HOST, 0x200, 0x204, 19),
+	TEGRA124_MC_RESET(XUSB_DEV,  0x200, 0x204, 20),
+	TEGRA124_MC_RESET(TSEC,      0x200, 0x204, 21),
+	TEGRA124_MC_RESET(SDMMC1,    0x200, 0x204, 22),
+	TEGRA124_MC_RESET(SDMMC2,    0x200, 0x204, 23),
+	TEGRA124_MC_RESET(SDMMC3,    0x200, 0x204, 25),
+	TEGRA124_MC_RESET(SDMMC4,    0x970, 0x974,  0),
+	TEGRA124_MC_RESET(ISP2B,     0x970, 0x974,  1),
+	TEGRA124_MC_RESET(GPU,       0x970, 0x974,  2),
+};
+
 #ifdef CONFIG_ARCH_TEGRA_124_SOC
 static const struct tegra_smmu_soc tegra124_smmu_soc = {
 	.clients = tegra124_mc_clients,
@@ -1035,6 +1071,12 @@ const struct tegra_mc_soc tegra124_mc_soc = {
 	.smmu = &tegra124_smmu_soc,
 	.emem_regs = tegra124_mc_emem_regs,
 	.num_emem_regs = ARRAY_SIZE(tegra124_mc_emem_regs),
+	.intmask = MC_INT_DECERR_MTS | MC_INT_SECERR_SEC | MC_INT_DECERR_VPR |
+		   MC_INT_INVALID_APB_ASID_UPDATE | MC_INT_INVALID_SMMU_PAGE |
+		   MC_INT_SECURITY_VIOLATION | MC_INT_DECERR_EMEM,
+	.reset_ops = &terga_mc_reset_ops_common,
+	.resets = tegra124_mc_resets,
+	.num_resets = ARRAY_SIZE(tegra124_mc_resets),
 };
 #endif /* CONFIG_ARCH_TEGRA_124_SOC */
 
@@ -1059,5 +1101,11 @@ const struct tegra_mc_soc tegra132_mc_soc = {
 	.atom_size = 32,
 	.client_id_mask = 0x7f,
 	.smmu = &tegra132_smmu_soc,
+	.intmask = MC_INT_DECERR_MTS | MC_INT_SECERR_SEC | MC_INT_DECERR_VPR |
+		   MC_INT_INVALID_APB_ASID_UPDATE | MC_INT_INVALID_SMMU_PAGE |
+		   MC_INT_SECURITY_VIOLATION | MC_INT_DECERR_EMEM,
+	.reset_ops = &terga_mc_reset_ops_common,
+	.resets = tegra124_mc_resets,
+	.num_resets = ARRAY_SIZE(tegra124_mc_resets),
 };
 #endif /* CONFIG_ARCH_TEGRA_132_SOC */

drivers/memory/tegra/tegra20.c

@@ -0,0 +1,296 @@
+/*
+ * Copyright (C) 2012 NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <dt-bindings/memory/tegra20-mc.h>
+
+#include "mc.h"
+
+static const struct tegra_mc_client tegra20_mc_clients[] = {
+	{
+		.id = 0x00,
+		.name = "display0a",
+	}, {
+		.id = 0x01,
+		.name = "display0ab",
+	}, {
+		.id = 0x02,
+		.name = "display0b",
+	}, {
+		.id = 0x03,
+		.name = "display0bb",
+	}, {
+		.id = 0x04,
+		.name = "display0c",
+	}, {
+		.id = 0x05,
+		.name = "display0cb",
+	}, {
+		.id = 0x06,
+		.name = "display1b",
+	}, {
+		.id = 0x07,
+		.name = "display1bb",
+	}, {
+		.id = 0x08,
+		.name = "eppup",
+	}, {
+		.id = 0x09,
+		.name = "g2pr",
+	}, {
+		.id = 0x0a,
+		.name = "g2sr",
+	}, {
+		.id = 0x0b,
+		.name = "mpeunifbr",
+	}, {
+		.id = 0x0c,
+		.name = "viruv",
+	}, {
+		.id = 0x0d,
+		.name = "avpcarm7r",
+	}, {
+		.id = 0x0e,
+		.name = "displayhc",
+	}, {
+		.id = 0x0f,
+		.name = "displayhcb",
+	}, {
+		.id = 0x10,
+		.name = "fdcdrd",
+	}, {
+		.id = 0x11,
+		.name = "g2dr",
+	}, {
+		.id = 0x12,
+		.name = "host1xdmar",
+	}, {
+		.id = 0x13,
+		.name = "host1xr",
+	}, {
+		.id = 0x14,
+		.name = "idxsrd",
+	}, {
+		.id = 0x15,
+		.name = "mpcorer",
+	}, {
+		.id = 0x16,
+		.name = "mpe_ipred",
+	}, {
+		.id = 0x17,
+		.name = "mpeamemrd",
+	}, {
+		.id = 0x18,
+		.name = "mpecsrd",
+	}, {
+		.id = 0x19,
+		.name = "ppcsahbdmar",
+	}, {
+		.id = 0x1a,
+		.name = "ppcsahbslvr",
+	}, {
+		.id = 0x1b,
+		.name = "texsrd",
+	}, {
+		.id = 0x1c,
+		.name = "vdebsevr",
+	}, {
+		.id = 0x1d,
+		.name = "vdember",
+	}, {
+		.id = 0x1e,
+		.name = "vdemcer",
+	}, {
+		.id = 0x1f,
+		.name = "vdetper",
+	}, {
+		.id = 0x20,
+		.name = "eppu",
+	}, {
+		.id = 0x21,
+		.name = "eppv",
+	}, {
+		.id = 0x22,
+		.name = "eppy",
+	}, {
+		.id = 0x23,
+		.name = "mpeunifbw",
+	}, {
+		.id = 0x24,
+		.name = "viwsb",
+	}, {
+		.id = 0x25,
+		.name = "viwu",
+	}, {
+		.id = 0x26,
+		.name = "viwv",
+	}, {
+		.id = 0x27,
+		.name = "viwy",
+	}, {
+		.id = 0x28,
+		.name = "g2dw",
+	}, {
+		.id = 0x29,
+		.name = "avpcarm7w",
+	}, {
+		.id = 0x2a,
+		.name = "fdcdwr",
+	}, {
+		.id = 0x2b,
+		.name = "host1xw",
+	}, {
+		.id = 0x2c,
+		.name = "ispw",
+	}, {
+		.id = 0x2d,
+		.name = "mpcorew",
+	}, {
+		.id = 0x2e,
+		.name = "mpecswr",
+	}, {
+		.id = 0x2f,
+		.name = "ppcsahbdmaw",
+	}, {
+		.id = 0x30,
+		.name = "ppcsahbslvw",
+	}, {
+		.id = 0x31,
+		.name = "vdebsevw",
+	}, {
+		.id = 0x32,
+		.name = "vdembew",
+	}, {
+		.id = 0x33,
+		.name = "vdetpmw",
+	},
+};
+
+#define TEGRA20_MC_RESET(_name, _control, _status, _reset, _bit)	\
+	{								\
+		.name = #_name,						\
+		.id = TEGRA20_MC_RESET_##_name,				\
+		.control = _control,					\
+		.status = _status,					\
+		.reset = _reset,					\
+		.bit = _bit,						\
+	}
+
+static const struct tegra_mc_reset tegra20_mc_resets[] = {
+	TEGRA20_MC_RESET(AVPC,   0x100, 0x140, 0x104,  0),
+	TEGRA20_MC_RESET(DC,     0x100, 0x144, 0x104,  1),
+	TEGRA20_MC_RESET(DCB,    0x100, 0x148, 0x104,  2),
+	TEGRA20_MC_RESET(EPP,    0x100, 0x14c, 0x104,  3),
+	TEGRA20_MC_RESET(2D,     0x100, 0x150, 0x104,  4),
+	TEGRA20_MC_RESET(HC,     0x100, 0x154, 0x104,  5),
+	TEGRA20_MC_RESET(ISP,    0x100, 0x158, 0x104,  6),
+	TEGRA20_MC_RESET(MPCORE, 0x100, 0x15c, 0x104,  7),
+	TEGRA20_MC_RESET(MPEA,   0x100, 0x160, 0x104,  8),
+	TEGRA20_MC_RESET(MPEB,   0x100, 0x164, 0x104,  9),
+	TEGRA20_MC_RESET(MPEC,   0x100, 0x168, 0x104, 10),
+	TEGRA20_MC_RESET(3D,     0x100, 0x16c, 0x104, 11),
+	TEGRA20_MC_RESET(PPCS,   0x100, 0x170, 0x104, 12),
+	TEGRA20_MC_RESET(VDE,    0x100, 0x174, 0x104, 13),
+	TEGRA20_MC_RESET(VI,     0x100, 0x178, 0x104, 14),
+};
+
+static int terga20_mc_hotreset_assert(struct tegra_mc *mc,
+				      const struct tegra_mc_reset *rst)
+{
+	unsigned long flags;
+	u32 value;
+
+	spin_lock_irqsave(&mc->lock, flags);
+
+	value = mc_readl(mc, rst->reset);
+	mc_writel(mc, value & ~BIT(rst->bit), rst->reset);
+
+	spin_unlock_irqrestore(&mc->lock, flags);
+
+	return 0;
+}
+
+static int terga20_mc_hotreset_deassert(struct tegra_mc *mc,
+					const struct tegra_mc_reset *rst)
+{
+	unsigned long flags;
+	u32 value;
+
+	spin_lock_irqsave(&mc->lock, flags);
+
+	value = mc_readl(mc, rst->reset);
+	mc_writel(mc, value | BIT(rst->bit), rst->reset);
+
+	spin_unlock_irqrestore(&mc->lock, flags);
+
+	return 0;
+}
+
+static int terga20_mc_block_dma(struct tegra_mc *mc,
+				const struct tegra_mc_reset *rst)
+{
+	unsigned long flags;
+	u32 value;
+
+	spin_lock_irqsave(&mc->lock, flags);
+
+	value = mc_readl(mc, rst->control) & ~BIT(rst->bit);
+	mc_writel(mc, value, rst->control);
+
+	spin_unlock_irqrestore(&mc->lock, flags);
+
+	return 0;
+}
+
+static bool terga20_mc_dma_idling(struct tegra_mc *mc,
+				  const struct tegra_mc_reset *rst)
+{
+	return mc_readl(mc, rst->status) == 0;
+}
+
+static int terga20_mc_reset_status(struct tegra_mc *mc,
+				   const struct tegra_mc_reset *rst)
+{
+	return (mc_readl(mc, rst->reset) & BIT(rst->bit)) == 0;
+}
+
+static int terga20_mc_unblock_dma(struct tegra_mc *mc,
+				  const struct tegra_mc_reset *rst)
+{
+	unsigned long flags;
+	u32 value;
+
+	spin_lock_irqsave(&mc->lock, flags);
+
+	value = mc_readl(mc, rst->control) | BIT(rst->bit);
+	mc_writel(mc, value, rst->control);
+
+	spin_unlock_irqrestore(&mc->lock, flags);
+
+	return 0;
+}
+
+const struct tegra_mc_reset_ops terga20_mc_reset_ops = {
+	.hotreset_assert = terga20_mc_hotreset_assert,
+	.hotreset_deassert = terga20_mc_hotreset_deassert,
+	.block_dma = terga20_mc_block_dma,
+	.dma_idling = terga20_mc_dma_idling,
+	.unblock_dma = terga20_mc_unblock_dma,
+	.reset_status = terga20_mc_reset_status,
+};
+
+const struct tegra_mc_soc tegra20_mc_soc = {
+	.clients = tegra20_mc_clients,
+	.num_clients = ARRAY_SIZE(tegra20_mc_clients),
+	.num_address_bits = 32,
+	.client_id_mask = 0x3f,
+	.intmask = MC_INT_SECURITY_VIOLATION | MC_INT_INVALID_GART_PAGE |
+		   MC_INT_DECERR_EMEM,
+	.reset_ops = &terga20_mc_reset_ops,
+	.resets = tegra20_mc_resets,
+	.num_resets = ARRAY_SIZE(tegra20_mc_resets),
+};

drivers/memory/tegra/tegra210.c

@@ -6,11 +6,6 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/of.h>
-#include <linux/mm.h>
-
-#include <asm/cacheflush.h>
-
 #include <dt-bindings/memory/tegra210-mc.h>
 
 #include "mc.h"
@@ -1085,6 +1080,48 @@ static const struct tegra_smmu_soc tegra210_smmu_soc = {
 	.num_asids = 128,
 };
 
+#define TEGRA210_MC_RESET(_name, _control, _status, _bit)	\
+	{							\
+		.name = #_name,					\
+		.id = TEGRA210_MC_RESET_##_name,		\
+		.control = _control,				\
+		.status = _status,				\
+		.bit = _bit,					\
+	}
+
+static const struct tegra_mc_reset tegra210_mc_resets[] = {
+	TEGRA210_MC_RESET(AFI,       0x200, 0x204,  0),
+	TEGRA210_MC_RESET(AVPC,      0x200, 0x204,  1),
+	TEGRA210_MC_RESET(DC,        0x200, 0x204,  2),
+	TEGRA210_MC_RESET(DCB,       0x200, 0x204,  3),
+	TEGRA210_MC_RESET(HC,        0x200, 0x204,  6),
+	TEGRA210_MC_RESET(HDA,       0x200, 0x204,  7),
+	TEGRA210_MC_RESET(ISP2,      0x200, 0x204,  8),
+	TEGRA210_MC_RESET(MPCORE,    0x200, 0x204,  9),
+	TEGRA210_MC_RESET(NVENC,     0x200, 0x204, 11),
+	TEGRA210_MC_RESET(PPCS,      0x200, 0x204, 14),
+	TEGRA210_MC_RESET(SATA,      0x200, 0x204, 15),
+	TEGRA210_MC_RESET(VI,        0x200, 0x204, 17),
+	TEGRA210_MC_RESET(VIC,       0x200, 0x204, 18),
+	TEGRA210_MC_RESET(XUSB_HOST, 0x200, 0x204, 19),
+	TEGRA210_MC_RESET(XUSB_DEV,  0x200, 0x204, 20),
+	TEGRA210_MC_RESET(A9AVP,     0x200, 0x204, 21),
+	TEGRA210_MC_RESET(TSEC,      0x200, 0x204, 22),
+	TEGRA210_MC_RESET(SDMMC1,    0x200, 0x204, 29),
+	TEGRA210_MC_RESET(SDMMC2,    0x200, 0x204, 30),
+	TEGRA210_MC_RESET(SDMMC3,    0x200, 0x204, 31),
+	TEGRA210_MC_RESET(SDMMC4,    0x970, 0x974,  0),
+	TEGRA210_MC_RESET(ISP2B,     0x970, 0x974,  1),
+	TEGRA210_MC_RESET(GPU,       0x970, 0x974,  2),
+	TEGRA210_MC_RESET(NVDEC,     0x970, 0x974,  5),
+	TEGRA210_MC_RESET(APE,       0x970, 0x974,  6),
+	TEGRA210_MC_RESET(SE,        0x970, 0x974,  7),
+	TEGRA210_MC_RESET(NVJPG,     0x970, 0x974,  8),
+	TEGRA210_MC_RESET(AXIAP,     0x970, 0x974, 11),
+	TEGRA210_MC_RESET(ETR,       0x970, 0x974, 12),
+	TEGRA210_MC_RESET(TSECB,     0x970, 0x974, 13),
+};
+
 const struct tegra_mc_soc tegra210_mc_soc = {
 	.clients = tegra210_mc_clients,
 	.num_clients = ARRAY_SIZE(tegra210_mc_clients),
@@ -1092,4 +1129,10 @@ const struct tegra_mc_soc tegra210_mc_soc = {
 	.atom_size = 64,
 	.client_id_mask = 0xff,
 	.smmu = &tegra210_smmu_soc,
+	.intmask = MC_INT_DECERR_MTS | MC_INT_SECERR_SEC | MC_INT_DECERR_VPR |
+		   MC_INT_INVALID_APB_ASID_UPDATE | MC_INT_INVALID_SMMU_PAGE |
+		   MC_INT_SECURITY_VIOLATION | MC_INT_DECERR_EMEM,
+	.reset_ops = &terga_mc_reset_ops_common,
+	.resets = tegra210_mc_resets,
+	.num_resets = ARRAY_SIZE(tegra210_mc_resets),
 };

drivers/memory/tegra/tegra30.c

@@ -960,6 +960,36 @@ static const struct tegra_smmu_soc tegra30_smmu_soc = {
 	.num_asids = 4,
 };
 
+#define TEGRA30_MC_RESET(_name, _control, _status, _bit)	\
+	{							\
+		.name = #_name,					\
+		.id = TEGRA30_MC_RESET_##_name,			\
+		.control = _control,				\
+		.status = _status,				\
+		.bit = _bit,					\
+	}
+
+static const struct tegra_mc_reset tegra30_mc_resets[] = {
+	TEGRA30_MC_RESET(AFI,      0x200, 0x204,  0),
+	TEGRA30_MC_RESET(AVPC,     0x200, 0x204,  1),
+	TEGRA30_MC_RESET(DC,       0x200, 0x204,  2),
+	TEGRA30_MC_RESET(DCB,      0x200, 0x204,  3),
+	TEGRA30_MC_RESET(EPP,      0x200, 0x204,  4),
+	TEGRA30_MC_RESET(2D,       0x200, 0x204,  5),
+	TEGRA30_MC_RESET(HC,       0x200, 0x204,  6),
+	TEGRA30_MC_RESET(HDA,      0x200, 0x204,  7),
+	TEGRA30_MC_RESET(ISP,      0x200, 0x204,  8),
+	TEGRA30_MC_RESET(MPCORE,   0x200, 0x204,  9),
+	TEGRA30_MC_RESET(MPCORELP, 0x200, 0x204, 10),
+	TEGRA30_MC_RESET(MPE,      0x200, 0x204, 11),
+	TEGRA30_MC_RESET(3D,       0x200, 0x204, 12),
+	TEGRA30_MC_RESET(3D2,      0x200, 0x204, 13),
+	TEGRA30_MC_RESET(PPCS,     0x200, 0x204, 14),
+	TEGRA30_MC_RESET(SATA,     0x200, 0x204, 15),
+	TEGRA30_MC_RESET(VDE,      0x200, 0x204, 16),
+	TEGRA30_MC_RESET(VI,       0x200, 0x204, 17),
+};
+
 const struct tegra_mc_soc tegra30_mc_soc = {
 	.clients = tegra30_mc_clients,
 	.num_clients = ARRAY_SIZE(tegra30_mc_clients),
@@ -967,4 +997,9 @@ const struct tegra_mc_soc tegra30_mc_soc = {
 	.atom_size = 16,
 	.client_id_mask = 0x7f,
 	.smmu = &tegra30_smmu_soc,
+	.intmask = MC_INT_INVALID_SMMU_PAGE | MC_INT_SECURITY_VIOLATION |
+		   MC_INT_DECERR_EMEM,
+	.reset_ops = &terga_mc_reset_ops_common,
+	.resets = tegra30_mc_resets,
+	.num_resets = ARRAY_SIZE(tegra30_mc_resets),
 };

drivers/memory/tegra20-mc.c

@@ -1,254 +0,0 @@
-/*
- * Tegra20 Memory Controller
- *
- * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include <linux/err.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/ratelimit.h>
-#include <linux/platform_device.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-
-#define DRV_NAME "tegra20-mc"
-
-#define MC_INTSTATUS			0x0
-#define MC_INTMASK			0x4
-
-#define MC_INT_ERR_SHIFT		6
-#define MC_INT_ERR_MASK			(0x1f << MC_INT_ERR_SHIFT)
-#define MC_INT_DECERR_EMEM		BIT(MC_INT_ERR_SHIFT)
-#define MC_INT_INVALID_GART_PAGE	BIT(MC_INT_ERR_SHIFT + 1)
-#define MC_INT_SECURITY_VIOLATION	BIT(MC_INT_ERR_SHIFT + 2)
-#define MC_INT_ARBITRATION_EMEM		BIT(MC_INT_ERR_SHIFT + 3)
-
-#define MC_GART_ERROR_REQ		0x30
-#define MC_DECERR_EMEM_OTHERS_STATUS	0x58
-#define MC_SECURITY_VIOLATION_STATUS	0x74
-
-#define SECURITY_VIOLATION_TYPE		BIT(30)	/* 0=TRUSTZONE, 1=CARVEOUT */
-
-#define MC_CLIENT_ID_MASK		0x3f
-
-#define NUM_MC_REG_BANKS		2
-
-struct tegra20_mc {
-	void __iomem *regs[NUM_MC_REG_BANKS];
-	struct device *dev;
-};
-
-static inline u32 mc_readl(struct tegra20_mc *mc, u32 offs)
-{
-	u32 val = 0;
-
-	if (offs < 0x24)
-		val = readl(mc->regs[0] + offs);
-	else if (offs < 0x400)
-		val = readl(mc->regs[1] + offs - 0x3c);
-
-	return val;
-}
-
-static inline void mc_writel(struct tegra20_mc *mc, u32 val, u32 offs)
-{
-	if (offs < 0x24)
-		writel(val, mc->regs[0] + offs);
-	else if (offs < 0x400)
-		writel(val, mc->regs[1] + offs - 0x3c);
-}
-
-static const char * const tegra20_mc_client[] = {
-	"cbr_display0a",
-	"cbr_display0ab",
-	"cbr_display0b",
-	"cbr_display0bb",
-	"cbr_display0c",
-	"cbr_display0cb",
-	"cbr_display1b",
-	"cbr_display1bb",
-	"cbr_eppup",
-	"cbr_g2pr",
-	"cbr_g2sr",
-	"cbr_mpeunifbr",
-	"cbr_viruv",
-	"csr_avpcarm7r",
-	"csr_displayhc",
-	"csr_displayhcb",
-	"csr_fdcdrd",
-	"csr_g2dr",
-	"csr_host1xdmar",
-	"csr_host1xr",
-	"csr_idxsrd",
-	"csr_mpcorer",
-	"csr_mpe_ipred",
-	"csr_mpeamemrd",
-	"csr_mpecsrd",
-	"csr_ppcsahbdmar",
-	"csr_ppcsahbslvr",
-	"csr_texsrd",
-	"csr_vdebsevr",
-	"csr_vdember",
-	"csr_vdemcer",
-	"csr_vdetper",
-	"cbw_eppu",
-	"cbw_eppv",
-	"cbw_eppy",
-	"cbw_mpeunifbw",
-	"cbw_viwsb",
-	"cbw_viwu",
-	"cbw_viwv",
-	"cbw_viwy",
-	"ccw_g2dw",
-	"csw_avpcarm7w",
-	"csw_fdcdwr",
-	"csw_host1xw",
-	"csw_ispw",
-	"csw_mpcorew",
-	"csw_mpecswr",
-	"csw_ppcsahbdmaw",
-	"csw_ppcsahbslvw",
-	"csw_vdebsevw",
-	"csw_vdembew",
-	"csw_vdetpmw",
-};
-
-static void tegra20_mc_decode(struct tegra20_mc *mc, int n)
-{
-	u32 addr, req;
-	const char *client = "Unknown";
-	int idx, cid;
-	const struct reg_info {
-		u32 offset;
-		u32 write_bit;	/* 0=READ, 1=WRITE */
-		int cid_shift;
-		char *message;
-	} reg[] = {
-		{
-			.offset = MC_DECERR_EMEM_OTHERS_STATUS,
-			.write_bit = 31,
-			.message = "MC_DECERR",
-		},
-		{
-			.offset	= MC_GART_ERROR_REQ,
-			.cid_shift = 1,
-			.message = "MC_GART_ERR",
-
-		},
-		{
-			.offset = MC_SECURITY_VIOLATION_STATUS,
-			.write_bit = 31,
-			.message = "MC_SECURITY_ERR",
-		},
-	};
-
-	idx = n - MC_INT_ERR_SHIFT;
-	if ((idx < 0) || (idx >= ARRAY_SIZE(reg))) {
-		dev_err_ratelimited(mc->dev, "Unknown interrupt status %08lx\n",
-				    BIT(n));
-		return;
-	}
-
-	req = mc_readl(mc, reg[idx].offset);
-	cid = (req >> reg[idx].cid_shift) & MC_CLIENT_ID_MASK;
-	if (cid < ARRAY_SIZE(tegra20_mc_client))
-		client = tegra20_mc_client[cid];
-
-	addr = mc_readl(mc, reg[idx].offset + sizeof(u32));
-
-	dev_err_ratelimited(mc->dev, "%s (0x%08x): 0x%08x %s (%s %s)\n",
-			   reg[idx].message, req, addr, client,
-			   (req & BIT(reg[idx].write_bit)) ? "write" : "read",
-			   (reg[idx].offset == MC_SECURITY_VIOLATION_STATUS) ?
-			   ((req & SECURITY_VIOLATION_TYPE) ?
-			    "carveout" : "trustzone") : "");
-}
-
-static const struct of_device_id tegra20_mc_of_match[] = {
-	{ .compatible = "nvidia,tegra20-mc", },
-	{},
-};
-
-static irqreturn_t tegra20_mc_isr(int irq, void *data)
-{
-	u32 stat, mask, bit;
-	struct tegra20_mc *mc = data;
-
-	stat = mc_readl(mc, MC_INTSTATUS);
-	mask = mc_readl(mc, MC_INTMASK);
-	mask &= stat;
-	if (!mask)
-		return IRQ_NONE;
-	while ((bit = ffs(mask)) != 0) {
-		tegra20_mc_decode(mc, bit - 1);
-		mask &= ~BIT(bit - 1);
-	}
-
-	mc_writel(mc, stat, MC_INTSTATUS);
-	return IRQ_HANDLED;
-}
-
-static int tegra20_mc_probe(struct platform_device *pdev)
-{
-	struct resource *irq;
-	struct tegra20_mc *mc;
-	int i, err;
-	u32 intmask;
-
-	mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);
-	if (!mc)
-		return -ENOMEM;
-	mc->dev = &pdev->dev;
-
-	for (i = 0; i < ARRAY_SIZE(mc->regs); i++) {
-		struct resource *res;
-
-		res = platform_get_resource(pdev, IORESOURCE_MEM, i);
-		mc->regs[i] = devm_ioremap_resource(&pdev->dev, res);
-		if (IS_ERR(mc->regs[i]))
-			return PTR_ERR(mc->regs[i]);
-	}
-
-	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!irq)
-		return -ENODEV;
-	err = devm_request_irq(&pdev->dev, irq->start, tegra20_mc_isr,
-			       IRQF_SHARED, dev_name(&pdev->dev), mc);
-	if (err)
-		return -ENODEV;
-
-	platform_set_drvdata(pdev, mc);
-
-	intmask = MC_INT_INVALID_GART_PAGE |
-		MC_INT_DECERR_EMEM | MC_INT_SECURITY_VIOLATION;
-	mc_writel(mc, intmask, MC_INTMASK);
-	return 0;
-}
-
-static struct platform_driver tegra20_mc_driver = {
-	.probe = tegra20_mc_probe,
-	.driver = {
-		.name = DRV_NAME,
-		.of_match_table = tegra20_mc_of_match,
-	},
-};
-module_platform_driver(tegra20_mc_driver);
-
-MODULE_AUTHOR("Hiroshi DOYU <hdoyu@nvidia.com>");
-MODULE_DESCRIPTION("Tegra20 MC driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:" DRV_NAME);

drivers/memory/ti-aemif.c

@@ -339,9 +339,6 @@ static int aemif_probe(struct platform_device *pdev)
 	struct aemif_platform_data *pdata;
 	struct of_dev_auxdata *dev_lookup;
 
-	if (np == NULL)
-		return 0;
-
 	aemif = devm_kzalloc(dev, sizeof(*aemif), GFP_KERNEL);
 	if (!aemif)
 		return -ENOMEM;
@@ -363,8 +360,10 @@ static int aemif_probe(struct platform_device *pdev)
 
 	aemif->clk_rate = clk_get_rate(aemif->clk) / MSEC_PER_SEC;
 
-	if (of_device_is_compatible(np, "ti,da850-aemif"))
+	if (np && of_device_is_compatible(np, "ti,da850-aemif"))
 		aemif->cs_offset = 2;
+	else if (pdata)
+		aemif->cs_offset = pdata->cs_offset;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	aemif->base = devm_ioremap_resource(dev, res);
@@ -373,15 +372,23 @@ static int aemif_probe(struct platform_device *pdev)
 		goto error;
 	}
 
-	/*
-	 * For every controller device node, there is a cs device node that
-	 * describe the bus configuration parameters. This functions iterate
-	 * over these nodes and update the cs data array.
-	 */
-	for_each_available_child_of_node(np, child_np) {
-		ret = of_aemif_parse_abus_config(pdev, child_np);
-		if (ret < 0)
-			goto error;
+	if (np) {
+		/*
+		 * For every controller device node, there is a cs device node
+		 * that describe the bus configuration parameters. This
+		 * functions iterate over these nodes and update the cs data
+		 * array.
+		 */
+		for_each_available_child_of_node(np, child_np) {
+			ret = of_aemif_parse_abus_config(pdev, child_np);
+			if (ret < 0)
+				goto error;
+		}
+	} else if (pdata && pdata->num_abus_data > 0) {
+		for (i = 0; i < pdata->num_abus_data; i++, aemif->num_cs++) {
+			aemif->cs_data[i].cs = pdata->abus_data[i].cs;
+			aemif_get_hw_params(pdev, i);
+		}
 	}
 
 	for (i = 0; i < aemif->num_cs; i++) {
@@ -394,14 +401,25 @@ static int aemif_probe(struct platform_device *pdev)
 	}
 
 	/*
-	 * Create a child devices explicitly from here to
-	 * guarantee that the child will be probed after the AEMIF timing
-	 * parameters are set.
+	 * Create a child devices explicitly from here to guarantee that the
+	 * child will be probed after the AEMIF timing parameters are set.
 	 */
-	for_each_available_child_of_node(np, child_np) {
-		ret = of_platform_populate(child_np, NULL, dev_lookup, dev);
-		if (ret < 0)
-			goto error;
+	if (np) {
+		for_each_available_child_of_node(np, child_np) {
+			ret = of_platform_populate(child_np, NULL,
+						   dev_lookup, dev);
+			if (ret < 0)
+				goto error;
+		}
+	} else {
+		for (i = 0; i < pdata->num_sub_devices; i++) {
+			pdata->sub_devices[i].dev.parent = dev;
+			ret = platform_device_register(&pdata->sub_devices[i]);
+			if (ret) {
+				dev_warn(dev, "Error register sub device %s\n",
+					 pdata->sub_devices[i].name);
+			}
+		}
 	}
 
 	return 0;
@@ -422,7 +440,7 @@ static struct platform_driver aemif_driver = {
 	.probe = aemif_probe,
 	.remove = aemif_remove,
 	.driver = {
-		.name = KBUILD_MODNAME,
+		.name = "ti-aemif",
 		.of_match_table = of_match_ptr(aemif_of_match),
 	},
 };

drivers/reset/reset-uniphier.c

@@ -63,6 +63,9 @@ static const struct uniphier_reset_data uniphier_pro4_sys_reset_data[] = {
 	UNIPHIER_RESETX(12, 0x2000, 6),		/* GIO (Ether, SATA, USB3) */
 	UNIPHIER_RESETX(14, 0x2000, 17),	/* USB30 */
 	UNIPHIER_RESETX(15, 0x2004, 17),	/* USB31 */
+	UNIPHIER_RESETX(28, 0x2000, 18),	/* SATA0 */
+	UNIPHIER_RESETX(29, 0x2004, 18),	/* SATA1 */
+	UNIPHIER_RESETX(30, 0x2000, 19),	/* SATA-PHY */
 	UNIPHIER_RESETX(40, 0x2000, 13),	/* AIO */
 	UNIPHIER_RESET_END,
 };
@@ -73,6 +76,7 @@ static const struct uniphier_reset_data uniphier_pro5_sys_reset_data[] = {
 	UNIPHIER_RESETX(12, 0x2000, 6),		/* GIO (PCIe, USB3) */
 	UNIPHIER_RESETX(14, 0x2000, 17),	/* USB30 */
 	UNIPHIER_RESETX(15, 0x2004, 17),	/* USB31 */
+	UNIPHIER_RESETX(24, 0x2008, 2),		/* PCIe */
 	UNIPHIER_RESETX(40, 0x2000, 13),	/* AIO */
 	UNIPHIER_RESET_END,
 };
@@ -89,7 +93,7 @@ static const struct uniphier_reset_data uniphier_pxs2_sys_reset_data[] = {
 	UNIPHIER_RESETX(20, 0x2014, 5),		/* USB31-PHY0 */
 	UNIPHIER_RESETX(21, 0x2014, 1),		/* USB31-PHY1 */
 	UNIPHIER_RESETX(28, 0x2014, 12),	/* SATA */
-	UNIPHIER_RESET(29, 0x2014, 8),		/* SATA-PHY (active high) */
+	UNIPHIER_RESET(30, 0x2014, 8),		/* SATA-PHY (active high) */
 	UNIPHIER_RESETX(40, 0x2000, 13),	/* AIO */
 	UNIPHIER_RESET_END,
 };
@@ -99,6 +103,7 @@ static const struct uniphier_reset_data uniphier_ld11_sys_reset_data[] = {
 	UNIPHIER_RESETX(4, 0x200c, 2),		/* eMMC */
 	UNIPHIER_RESETX(6, 0x200c, 6),		/* Ether */
 	UNIPHIER_RESETX(8, 0x200c, 8),		/* STDMAC (HSC, MIO) */
+	UNIPHIER_RESETX(9, 0x200c, 9),		/* HSC */
 	UNIPHIER_RESETX(40, 0x2008, 0),		/* AIO */
 	UNIPHIER_RESETX(41, 0x2008, 1),		/* EVEA */
 	UNIPHIER_RESETX(42, 0x2010, 2),		/* EXIV */
@@ -110,11 +115,13 @@ static const struct uniphier_reset_data uniphier_ld20_sys_reset_data[] = {
 	UNIPHIER_RESETX(4, 0x200c, 2),		/* eMMC */
 	UNIPHIER_RESETX(6, 0x200c, 6),		/* Ether */
 	UNIPHIER_RESETX(8, 0x200c, 8),		/* STDMAC (HSC) */
+	UNIPHIER_RESETX(9, 0x200c, 9),		/* HSC */
 	UNIPHIER_RESETX(14, 0x200c, 5),		/* USB30 */
 	UNIPHIER_RESETX(16, 0x200c, 12),	/* USB30-PHY0 */
 	UNIPHIER_RESETX(17, 0x200c, 13),	/* USB30-PHY1 */
 	UNIPHIER_RESETX(18, 0x200c, 14),	/* USB30-PHY2 */
 	UNIPHIER_RESETX(19, 0x200c, 15),	/* USB30-PHY3 */
+	UNIPHIER_RESETX(24, 0x200c, 4),		/* PCIe */
 	UNIPHIER_RESETX(40, 0x2008, 0),		/* AIO */
 	UNIPHIER_RESETX(41, 0x2008, 1),		/* EVEA */
 	UNIPHIER_RESETX(42, 0x2010, 2),		/* EXIV */
@@ -134,6 +141,10 @@ static const struct uniphier_reset_data uniphier_pxs3_sys_reset_data[] = {
 	UNIPHIER_RESETX(18, 0x200c, 20),	/* USB30-PHY2 */
 	UNIPHIER_RESETX(20, 0x200c, 17),	/* USB31-PHY0 */
 	UNIPHIER_RESETX(21, 0x200c, 19),	/* USB31-PHY1 */
+	UNIPHIER_RESETX(24, 0x200c, 3),		/* PCIe */
+	UNIPHIER_RESETX(28, 0x200c, 7),		/* SATA0 */
+	UNIPHIER_RESETX(29, 0x200c, 8),		/* SATA1 */
+	UNIPHIER_RESETX(30, 0x200c, 21),	/* SATA-PHY */
 	UNIPHIER_RESET_END,
 };
 

drivers/soc/imx/gpc.c

@@ -443,17 +443,25 @@ static int imx_gpc_probe(struct platform_device *pdev)
 			if (domain_index >= of_id_data->num_domains)
 				continue;
 
-			domain = &imx_gpc_domains[domain_index];
-			domain->regmap = regmap;
-			domain->ipg_rate_mhz = ipg_rate_mhz;
-
 			pd_pdev = platform_device_alloc("imx-pgc-power-domain",
 							domain_index);
 			if (!pd_pdev) {
 				of_node_put(np);
 				return -ENOMEM;
 			}
-			pd_pdev->dev.platform_data = domain;
+
+			ret = platform_device_add_data(pd_pdev,
+						       &imx_gpc_domains[domain_index],
+						       sizeof(imx_gpc_domains[domain_index]));
+			if (ret) {
+				platform_device_put(pd_pdev);
+				of_node_put(np);
+				return ret;
+			}
+			domain = pd_pdev->dev.platform_data;
+			domain->regmap = regmap;
+			domain->ipg_rate_mhz = ipg_rate_mhz;
+
 			pd_pdev->dev.parent = &pdev->dev;
 			pd_pdev->dev.of_node = np;
 

drivers/soc/imx/gpcv2.c

@@ -155,7 +155,7 @@ static int imx7_gpc_pu_pgc_sw_pdn_req(struct generic_pm_domain *genpd)
 	return imx7_gpc_pu_pgc_sw_pxx_req(genpd, false);
 }
 
-static struct imx7_pgc_domain imx7_pgc_domains[] = {
+static const struct imx7_pgc_domain imx7_pgc_domains[] = {
 	[IMX7_POWER_DOMAIN_MIPI_PHY] = {
 		.genpd = {
 			.name      = "mipi-phy",
@@ -321,11 +321,6 @@ static int imx_gpcv2_probe(struct platform_device *pdev)
 			continue;
 		}
 
-		domain = &imx7_pgc_domains[domain_index];
-		domain->regmap = regmap;
-		domain->genpd.power_on  = imx7_gpc_pu_pgc_sw_pup_req;
-		domain->genpd.power_off = imx7_gpc_pu_pgc_sw_pdn_req;
-
 		pd_pdev = platform_device_alloc("imx7-pgc-domain",
 						domain_index);
 		if (!pd_pdev) {
@@ -334,7 +329,20 @@ static int imx_gpcv2_probe(struct platform_device *pdev)
 			return -ENOMEM;
 		}
 
-		pd_pdev->dev.platform_data = domain;
+		ret = platform_device_add_data(pd_pdev,
+					       &imx7_pgc_domains[domain_index],
+					       sizeof(imx7_pgc_domains[domain_index]));
+		if (ret) {
+			platform_device_put(pd_pdev);
+			of_node_put(np);
+			return ret;
+		}
+
+		domain = pd_pdev->dev.platform_data;
+		domain->regmap = regmap;
+		domain->genpd.power_on  = imx7_gpc_pu_pgc_sw_pup_req;
+		domain->genpd.power_off = imx7_gpc_pu_pgc_sw_pdn_req;
+
 		pd_pdev->dev.parent = dev;
 		pd_pdev->dev.of_node = np;
 

drivers/soc/mediatek/mtk-infracfg.c

@@ -17,6 +17,9 @@
 #include <linux/soc/mediatek/infracfg.h>
 #include <asm/processor.h>
 
+#define MTK_POLL_DELAY_US   10
+#define MTK_POLL_TIMEOUT    (jiffies_to_usecs(HZ))
+
 #define INFRA_TOPAXI_PROTECTEN		0x0220
 #define INFRA_TOPAXI_PROTECTSTA1	0x0228
 #define INFRA_TOPAXI_PROTECTEN_SET	0x0260
@@ -37,7 +40,6 @@
 int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask,
 		bool reg_update)
 {
-	unsigned long expired;
 	u32 val;
 	int ret;
 
@@ -47,22 +49,11 @@ int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask,
 	else
 		regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_SET, mask);
 
-	expired = jiffies + HZ;
-
-	while (1) {
-		ret = regmap_read(infracfg, INFRA_TOPAXI_PROTECTSTA1, &val);
-		if (ret)
-			return ret;
-
-		if ((val & mask) == mask)
-			break;
+	ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1,
+				       val, (val & mask) == mask,
+				       MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
 
-		cpu_relax();
-		if (time_after(jiffies, expired))
-			return -EIO;
-	}
-
-	return 0;
+	return ret;
 }
 
 /**
@@ -80,30 +71,17 @@ int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask,
 int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask,
 		bool reg_update)
 {
-	unsigned long expired;
 	int ret;
+	u32 val;
 
 	if (reg_update)
 		regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask, 0);
 	else
 		regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_CLR, mask);
 
-	expired = jiffies + HZ;
-
-	while (1) {
-		u32 val;
-
-		ret = regmap_read(infracfg, INFRA_TOPAXI_PROTECTSTA1, &val);
-		if (ret)
-			return ret;
-
-		if (!(val & mask))
-			break;
-
-		cpu_relax();
-		if (time_after(jiffies, expired))
-			return -EIO;
-	}
+	ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1,
+				       val, !(val & mask),
+				       MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
 
-	return 0;
+	return ret;
 }

drivers/soc/mediatek/mtk-pmic-wrap.c

@@ -1458,19 +1458,12 @@ static int pwrap_probe(struct platform_device *pdev)
 	int ret, irq;
 	struct pmic_wrapper *wrp;
 	struct device_node *np = pdev->dev.of_node;
-	const struct of_device_id *of_id =
-		of_match_device(of_pwrap_match_tbl, &pdev->dev);
 	const struct of_device_id *of_slave_id = NULL;
 	struct resource *res;
 
-	if (!of_id) {
-		dev_err(&pdev->dev, "Error: No device match found\n");
-		return -ENODEV;
-	}
+	if (np->child)
+		of_slave_id = of_match_node(of_slave_match_tbl, np->child);
 
-	if (pdev->dev.of_node->child)
-		of_slave_id = of_match_node(of_slave_match_tbl,
-					    pdev->dev.of_node->child);
 	if (!of_slave_id) {
 		dev_dbg(&pdev->dev, "slave pmic should be defined in dts\n");
 		return -EINVAL;
@@ -1482,7 +1475,7 @@ static int pwrap_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, wrp);
 
-	wrp->master = of_id->data;
+	wrp->master = of_device_get_match_data(&pdev->dev);
 	wrp->slave = of_slave_id->data;
 	wrp->dev = &pdev->dev;
 

drivers/soc/mediatek/mtk-scpsys.c

@@ -13,6 +13,7 @@
 #include <linux/clk.h>
 #include <linux/init.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/mfd/syscon.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
@@ -27,6 +28,13 @@
 #include <dt-bindings/power/mt7623a-power.h>
 #include <dt-bindings/power/mt8173-power.h>
 
+#define MTK_POLL_DELAY_US   10
+#define MTK_POLL_TIMEOUT    (jiffies_to_usecs(HZ))
+
+#define MTK_SCPD_ACTIVE_WAKEUP		BIT(0)
+#define MTK_SCPD_FWAIT_SRAM		BIT(1)
+#define MTK_SCPD_CAPS(_scpd, _x)	((_scpd)->data->caps & (_x))
+
 #define SPM_VDE_PWR_CON			0x0210
 #define SPM_MFG_PWR_CON			0x0214
 #define SPM_VEN_PWR_CON			0x0230
@@ -116,7 +124,7 @@ struct scp_domain_data {
 	u32 sram_pdn_ack_bits;
 	u32 bus_prot_mask;
 	enum clk_id clk_id[MAX_CLKS];
-	bool active_wakeup;
+	u8 caps;
 };
 
 struct scp;
@@ -184,12 +192,10 @@ static int scpsys_power_on(struct generic_pm_domain *genpd)
 {
 	struct scp_domain *scpd = container_of(genpd, struct scp_domain, genpd);
 	struct scp *scp = scpd->scp;
-	unsigned long timeout;
-	bool expired;
 	void __iomem *ctl_addr = scp->base + scpd->data->ctl_offs;
-	u32 sram_pdn_ack = scpd->data->sram_pdn_ack_bits;
+	u32 pdn_ack = scpd->data->sram_pdn_ack_bits;
 	u32 val;
-	int ret;
+	int ret, tmp;
 	int i;
 
 	if (scpd->supply) {
@@ -215,23 +221,10 @@ static int scpsys_power_on(struct generic_pm_domain *genpd)
 	writel(val, ctl_addr);
 
 	/* wait until PWR_ACK = 1 */
-	timeout = jiffies + HZ;
-	expired = false;
-	while (1) {
-		ret = scpsys_domain_is_on(scpd);
-		if (ret > 0)
-			break;
-
-		if (expired) {
-			ret = -ETIMEDOUT;
-			goto err_pwr_ack;
-		}
-
-		cpu_relax();
-
-		if (time_after(jiffies, timeout))
-			expired = true;
-	}
+	ret = readx_poll_timeout(scpsys_domain_is_on, scpd, tmp, tmp > 0,
+				 MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
+	if (ret < 0)
+		goto err_pwr_ack;
 
 	val &= ~PWR_CLK_DIS_BIT;
 	writel(val, ctl_addr);
@@ -245,20 +238,20 @@ static int scpsys_power_on(struct generic_pm_domain *genpd)
 	val &= ~scpd->data->sram_pdn_bits;
 	writel(val, ctl_addr);
 
-	/* wait until SRAM_PDN_ACK all 0 */
-	timeout = jiffies + HZ;
-	expired = false;
-	while (sram_pdn_ack && (readl(ctl_addr) & sram_pdn_ack)) {
+	/* Either wait until SRAM_PDN_ACK all 0 or have a force wait */
+	if (MTK_SCPD_CAPS(scpd, MTK_SCPD_FWAIT_SRAM)) {
+		/*
+		 * Currently, MTK_SCPD_FWAIT_SRAM is necessary only for
+		 * MT7622_POWER_DOMAIN_WB and thus just a trivial setup is
+		 * applied here.
+		 */
+		usleep_range(12000, 12100);
 
-		if (expired) {
-			ret = -ETIMEDOUT;
+	} else {
+		ret = readl_poll_timeout(ctl_addr, tmp, (tmp & pdn_ack) == 0,
+					 MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
+		if (ret < 0)
 			goto err_pwr_ack;
-		}
-
-		cpu_relax();
-
-		if (time_after(jiffies, timeout))
-			expired = true;
 	}
 
 	if (scpd->data->bus_prot_mask) {
@@ -289,12 +282,10 @@ static int scpsys_power_off(struct generic_pm_domain *genpd)
 {
 	struct scp_domain *scpd = container_of(genpd, struct scp_domain, genpd);
 	struct scp *scp = scpd->scp;
-	unsigned long timeout;
-	bool expired;
 	void __iomem *ctl_addr = scp->base + scpd->data->ctl_offs;
 	u32 pdn_ack = scpd->data->sram_pdn_ack_bits;
 	u32 val;
-	int ret;
+	int ret, tmp;
 	int i;
 
 	if (scpd->data->bus_prot_mask) {
@@ -310,19 +301,10 @@ static int scpsys_power_off(struct generic_pm_domain *genpd)
 	writel(val, ctl_addr);
 
 	/* wait until SRAM_PDN_ACK all 1 */
-	timeout = jiffies + HZ;
-	expired = false;
-	while (pdn_ack && (readl(ctl_addr) & pdn_ack) != pdn_ack) {
-		if (expired) {
-			ret = -ETIMEDOUT;
-			goto out;
-		}
-
-		cpu_relax();
-
-		if (time_after(jiffies, timeout))
-			expired = true;
-	}
+	ret = readl_poll_timeout(ctl_addr, tmp, (tmp & pdn_ack) == pdn_ack,
+				 MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
+	if (ret < 0)
+		goto out;
 
 	val |= PWR_ISO_BIT;
 	writel(val, ctl_addr);
@@ -340,23 +322,10 @@ static int scpsys_power_off(struct generic_pm_domain *genpd)
 	writel(val, ctl_addr);
 
 	/* wait until PWR_ACK = 0 */
-	timeout = jiffies + HZ;
-	expired = false;
-	while (1) {
-		ret = scpsys_domain_is_on(scpd);
-		if (ret == 0)
-			break;
-
-		if (expired) {
-			ret = -ETIMEDOUT;
-			goto out;
-		}
-
-		cpu_relax();
-
-		if (time_after(jiffies, timeout))
-			expired = true;
-	}
+	ret = readx_poll_timeout(scpsys_domain_is_on, scpd, tmp, tmp == 0,
+				 MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
+	if (ret < 0)
+		goto out;
 
 	for (i = 0; i < MAX_CLKS && scpd->clk[i]; i++)
 		clk_disable_unprepare(scpd->clk[i]);
@@ -469,7 +438,7 @@ static struct scp *init_scp(struct platform_device *pdev,
 		genpd->name = data->name;
 		genpd->power_off = scpsys_power_off;
 		genpd->power_on = scpsys_power_on;
-		if (scpd->data->active_wakeup)
+		if (MTK_SCPD_CAPS(scpd, MTK_SCPD_ACTIVE_WAKEUP))
 			genpd->flags |= GENPD_FLAG_ACTIVE_WAKEUP;
 	}
 
@@ -522,7 +491,7 @@ static const struct scp_domain_data scp_domain_data_mt2701[] = {
 		.bus_prot_mask = MT2701_TOP_AXI_PROT_EN_CONN_M |
 				 MT2701_TOP_AXI_PROT_EN_CONN_S,
 		.clk_id = {CLK_NONE},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2701_POWER_DOMAIN_DISP] = {
 		.name = "disp",
@@ -531,7 +500,7 @@ static const struct scp_domain_data scp_domain_data_mt2701[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.clk_id = {CLK_MM},
 		.bus_prot_mask = MT2701_TOP_AXI_PROT_EN_MM_M0,
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2701_POWER_DOMAIN_MFG] = {
 		.name = "mfg",
@@ -540,7 +509,7 @@ static const struct scp_domain_data scp_domain_data_mt2701[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.sram_pdn_ack_bits = GENMASK(12, 12),
 		.clk_id = {CLK_MFG},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2701_POWER_DOMAIN_VDEC] = {
 		.name = "vdec",
@@ -549,7 +518,7 @@ static const struct scp_domain_data scp_domain_data_mt2701[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.sram_pdn_ack_bits = GENMASK(12, 12),
 		.clk_id = {CLK_MM},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2701_POWER_DOMAIN_ISP] = {
 		.name = "isp",
@@ -558,7 +527,7 @@ static const struct scp_domain_data scp_domain_data_mt2701[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.sram_pdn_ack_bits = GENMASK(13, 12),
 		.clk_id = {CLK_MM},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2701_POWER_DOMAIN_BDP] = {
 		.name = "bdp",
@@ -566,7 +535,7 @@ static const struct scp_domain_data scp_domain_data_mt2701[] = {
 		.ctl_offs = SPM_BDP_PWR_CON,
 		.sram_pdn_bits = GENMASK(11, 8),
 		.clk_id = {CLK_NONE},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2701_POWER_DOMAIN_ETH] = {
 		.name = "eth",
@@ -575,7 +544,7 @@ static const struct scp_domain_data scp_domain_data_mt2701[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.sram_pdn_ack_bits = GENMASK(15, 12),
 		.clk_id = {CLK_ETHIF},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2701_POWER_DOMAIN_HIF] = {
 		.name = "hif",
@@ -584,14 +553,14 @@ static const struct scp_domain_data scp_domain_data_mt2701[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.sram_pdn_ack_bits = GENMASK(15, 12),
 		.clk_id = {CLK_ETHIF},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2701_POWER_DOMAIN_IFR_MSC] = {
 		.name = "ifr_msc",
 		.sta_mask = PWR_STATUS_IFR_MSC,
 		.ctl_offs = SPM_IFR_MSC_PWR_CON,
 		.clk_id = {CLK_NONE},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 };
 
@@ -606,7 +575,7 @@ static const struct scp_domain_data scp_domain_data_mt2712[] = {
 		.sram_pdn_bits = GENMASK(8, 8),
 		.sram_pdn_ack_bits = GENMASK(12, 12),
 		.clk_id = {CLK_MM},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2712_POWER_DOMAIN_VDEC] = {
 		.name = "vdec",
@@ -615,7 +584,7 @@ static const struct scp_domain_data scp_domain_data_mt2712[] = {
 		.sram_pdn_bits = GENMASK(8, 8),
 		.sram_pdn_ack_bits = GENMASK(12, 12),
 		.clk_id = {CLK_MM, CLK_VDEC},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2712_POWER_DOMAIN_VENC] = {
 		.name = "venc",
@@ -624,7 +593,7 @@ static const struct scp_domain_data scp_domain_data_mt2712[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.sram_pdn_ack_bits = GENMASK(15, 12),
 		.clk_id = {CLK_MM, CLK_VENC, CLK_JPGDEC},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2712_POWER_DOMAIN_ISP] = {
 		.name = "isp",
@@ -633,7 +602,7 @@ static const struct scp_domain_data scp_domain_data_mt2712[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.sram_pdn_ack_bits = GENMASK(13, 12),
 		.clk_id = {CLK_MM},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2712_POWER_DOMAIN_AUDIO] = {
 		.name = "audio",
@@ -642,7 +611,7 @@ static const struct scp_domain_data scp_domain_data_mt2712[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.sram_pdn_ack_bits = GENMASK(15, 12),
 		.clk_id = {CLK_AUDIO},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2712_POWER_DOMAIN_USB] = {
 		.name = "usb",
@@ -651,7 +620,7 @@ static const struct scp_domain_data scp_domain_data_mt2712[] = {
 		.sram_pdn_bits = GENMASK(10, 8),
 		.sram_pdn_ack_bits = GENMASK(14, 12),
 		.clk_id = {CLK_NONE},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2712_POWER_DOMAIN_USB2] = {
 		.name = "usb2",
@@ -660,7 +629,7 @@ static const struct scp_domain_data scp_domain_data_mt2712[] = {
 		.sram_pdn_bits = GENMASK(10, 8),
 		.sram_pdn_ack_bits = GENMASK(14, 12),
 		.clk_id = {CLK_NONE},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2712_POWER_DOMAIN_MFG] = {
 		.name = "mfg",
@@ -670,7 +639,7 @@ static const struct scp_domain_data scp_domain_data_mt2712[] = {
 		.sram_pdn_ack_bits = GENMASK(16, 16),
 		.clk_id = {CLK_MFG},
 		.bus_prot_mask = BIT(14) | BIT(21) | BIT(23),
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2712_POWER_DOMAIN_MFG_SC1] = {
 		.name = "mfg_sc1",
@@ -679,7 +648,7 @@ static const struct scp_domain_data scp_domain_data_mt2712[] = {
 		.sram_pdn_bits = GENMASK(8, 8),
 		.sram_pdn_ack_bits = GENMASK(16, 16),
 		.clk_id = {CLK_NONE},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2712_POWER_DOMAIN_MFG_SC2] = {
 		.name = "mfg_sc2",
@@ -688,7 +657,7 @@ static const struct scp_domain_data scp_domain_data_mt2712[] = {
 		.sram_pdn_bits = GENMASK(8, 8),
 		.sram_pdn_ack_bits = GENMASK(16, 16),
 		.clk_id = {CLK_NONE},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT2712_POWER_DOMAIN_MFG_SC3] = {
 		.name = "mfg_sc3",
@@ -697,7 +666,7 @@ static const struct scp_domain_data scp_domain_data_mt2712[] = {
 		.sram_pdn_bits = GENMASK(8, 8),
 		.sram_pdn_ack_bits = GENMASK(16, 16),
 		.clk_id = {CLK_NONE},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 };
 
@@ -797,7 +766,7 @@ static const struct scp_domain_data scp_domain_data_mt7622[] = {
 		.sram_pdn_ack_bits = GENMASK(15, 12),
 		.clk_id = {CLK_NONE},
 		.bus_prot_mask = MT7622_TOP_AXI_PROT_EN_ETHSYS,
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT7622_POWER_DOMAIN_HIF0] = {
 		.name = "hif0",
@@ -807,7 +776,7 @@ static const struct scp_domain_data scp_domain_data_mt7622[] = {
 		.sram_pdn_ack_bits = GENMASK(15, 12),
 		.clk_id = {CLK_HIFSEL},
 		.bus_prot_mask = MT7622_TOP_AXI_PROT_EN_HIF0,
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT7622_POWER_DOMAIN_HIF1] = {
 		.name = "hif1",
@@ -817,7 +786,7 @@ static const struct scp_domain_data scp_domain_data_mt7622[] = {
 		.sram_pdn_ack_bits = GENMASK(15, 12),
 		.clk_id = {CLK_HIFSEL},
 		.bus_prot_mask = MT7622_TOP_AXI_PROT_EN_HIF1,
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT7622_POWER_DOMAIN_WB] = {
 		.name = "wb",
@@ -827,7 +796,7 @@ static const struct scp_domain_data scp_domain_data_mt7622[] = {
 		.sram_pdn_ack_bits = 0,
 		.clk_id = {CLK_NONE},
 		.bus_prot_mask = MT7622_TOP_AXI_PROT_EN_WB,
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP | MTK_SCPD_FWAIT_SRAM,
 	},
 };
 
@@ -843,7 +812,7 @@ static const struct scp_domain_data scp_domain_data_mt7623a[] = {
 		.bus_prot_mask = MT2701_TOP_AXI_PROT_EN_CONN_M |
 				 MT2701_TOP_AXI_PROT_EN_CONN_S,
 		.clk_id = {CLK_NONE},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT7623A_POWER_DOMAIN_ETH] = {
 		.name = "eth",
@@ -852,7 +821,7 @@ static const struct scp_domain_data scp_domain_data_mt7623a[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.sram_pdn_ack_bits = GENMASK(15, 12),
 		.clk_id = {CLK_ETHIF},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT7623A_POWER_DOMAIN_HIF] = {
 		.name = "hif",
@@ -861,14 +830,14 @@ static const struct scp_domain_data scp_domain_data_mt7623a[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.sram_pdn_ack_bits = GENMASK(15, 12),
 		.clk_id = {CLK_ETHIF},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT7623A_POWER_DOMAIN_IFR_MSC] = {
 		.name = "ifr_msc",
 		.sta_mask = PWR_STATUS_IFR_MSC,
 		.ctl_offs = SPM_IFR_MSC_PWR_CON,
 		.clk_id = {CLK_NONE},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 };
 
@@ -934,7 +903,7 @@ static const struct scp_domain_data scp_domain_data_mt8173[] = {
 		.sram_pdn_bits = GENMASK(11, 8),
 		.sram_pdn_ack_bits = GENMASK(15, 12),
 		.clk_id = {CLK_NONE},
-		.active_wakeup = true,
+		.caps = MTK_SCPD_ACTIVE_WAKEUP,
 	},
 	[MT8173_POWER_DOMAIN_MFG_ASYNC] = {
 		.name = "mfg_async",
@@ -1067,15 +1036,13 @@ static const struct of_device_id of_scpsys_match_tbl[] = {
 
 static int scpsys_probe(struct platform_device *pdev)
 {
-	const struct of_device_id *match;
 	const struct scp_subdomain *sd;
 	const struct scp_soc_data *soc;
 	struct scp *scp;
 	struct genpd_onecell_data *pd_data;
 	int i, ret;
 
-	match = of_match_device(of_scpsys_match_tbl, &pdev->dev);
-	soc = (const struct scp_soc_data *)match->data;
+	soc = of_device_get_match_data(&pdev->dev);
 
 	scp = init_scp(pdev, soc->domains, soc->num_domains, &soc->regs,
 			soc->bus_prot_reg_update);

drivers/soc/rockchip/pm_domains.c

@@ -19,6 +19,10 @@
 #include <linux/clk.h>
 #include <linux/regmap.h>
 #include <linux/mfd/syscon.h>
+#include <dt-bindings/power/px30-power.h>
+#include <dt-bindings/power/rk3036-power.h>
+#include <dt-bindings/power/rk3128-power.h>
+#include <dt-bindings/power/rk3228-power.h>
 #include <dt-bindings/power/rk3288-power.h>
 #include <dt-bindings/power/rk3328-power.h>
 #include <dt-bindings/power/rk3366-power.h>
@@ -104,6 +108,18 @@ struct rockchip_pmu {
 	.active_wakeup = wakeup,			\
 }
 
+#define DOMAIN_RK3036(req, ack, idle, wakeup)		\
+{							\
+	.req_mask = (req >= 0) ? BIT(req) : 0,		\
+	.req_w_mask = (req >= 0) ?  BIT(req + 16) : 0,	\
+	.ack_mask = (ack >= 0) ? BIT(ack) : 0,		\
+	.idle_mask = (idle >= 0) ? BIT(idle) : 0,	\
+	.active_wakeup = wakeup,			\
+}
+
+#define DOMAIN_PX30(pwr, status, req, wakeup)		\
+	DOMAIN_M(pwr, status, req, (req) + 16, req, wakeup)
+
 #define DOMAIN_RK3288(pwr, status, req, wakeup)		\
 	DOMAIN(pwr, status, req, req, (req) + 16, wakeup)
 
@@ -256,7 +272,7 @@ static void rockchip_do_pmu_set_power_domain(struct rockchip_pm_domain *pd,
 		return;
 	else if (pd->info->pwr_w_mask)
 		regmap_write(pmu->regmap, pmu->info->pwr_offset,
-			     on ? pd->info->pwr_mask :
+			     on ? pd->info->pwr_w_mask :
 			     (pd->info->pwr_mask | pd->info->pwr_w_mask));
 	else
 		regmap_update_bits(pmu->regmap, pmu->info->pwr_offset,
@@ -700,6 +716,49 @@ err_out:
 	return error;
 }
 
+static const struct rockchip_domain_info px30_pm_domains[] = {
+	[PX30_PD_USB]		= DOMAIN_PX30(5, 5, 10, false),
+	[PX30_PD_SDCARD]	= DOMAIN_PX30(8, 8, 9, false),
+	[PX30_PD_GMAC]		= DOMAIN_PX30(10, 10, 6, false),
+	[PX30_PD_MMC_NAND]	= DOMAIN_PX30(11, 11, 5, false),
+	[PX30_PD_VPU]		= DOMAIN_PX30(12, 12, 14, false),
+	[PX30_PD_VO]		= DOMAIN_PX30(13, 13, 7, false),
+	[PX30_PD_VI]		= DOMAIN_PX30(14, 14, 8, false),
+	[PX30_PD_GPU]		= DOMAIN_PX30(15, 15, 2, false),
+};
+
+static const struct rockchip_domain_info rk3036_pm_domains[] = {
+	[RK3036_PD_MSCH]	= DOMAIN_RK3036(14, 23, 30, true),
+	[RK3036_PD_CORE]	= DOMAIN_RK3036(13, 17, 24, false),
+	[RK3036_PD_PERI]	= DOMAIN_RK3036(12, 18, 25, false),
+	[RK3036_PD_VIO]		= DOMAIN_RK3036(11, 19, 26, false),
+	[RK3036_PD_VPU]		= DOMAIN_RK3036(10, 20, 27, false),
+	[RK3036_PD_GPU]		= DOMAIN_RK3036(9, 21, 28, false),
+	[RK3036_PD_SYS]		= DOMAIN_RK3036(8, 22, 29, false),
+};
+
+static const struct rockchip_domain_info rk3128_pm_domains[] = {
+	[RK3128_PD_CORE]	= DOMAIN_RK3288(0, 0, 4, false),
+	[RK3128_PD_MSCH]	= DOMAIN_RK3288(-1, -1, 6, true),
+	[RK3128_PD_VIO]		= DOMAIN_RK3288(3, 3, 2, false),
+	[RK3128_PD_VIDEO]	= DOMAIN_RK3288(2, 2, 1, false),
+	[RK3128_PD_GPU]		= DOMAIN_RK3288(1, 1, 3, false),
+};
+
+static const struct rockchip_domain_info rk3228_pm_domains[] = {
+	[RK3228_PD_CORE]	= DOMAIN_RK3036(0, 0, 16, true),
+	[RK3228_PD_MSCH]	= DOMAIN_RK3036(1, 1, 17, true),
+	[RK3228_PD_BUS]		= DOMAIN_RK3036(2, 2, 18, true),
+	[RK3228_PD_SYS]		= DOMAIN_RK3036(3, 3, 19, true),
+	[RK3228_PD_VIO]		= DOMAIN_RK3036(4, 4, 20, false),
+	[RK3228_PD_VOP]		= DOMAIN_RK3036(5, 5, 21, false),
+	[RK3228_PD_VPU]		= DOMAIN_RK3036(6, 6, 22, false),
+	[RK3228_PD_RKVDEC]	= DOMAIN_RK3036(7, 7, 23, false),
+	[RK3228_PD_GPU]		= DOMAIN_RK3036(8, 8, 24, false),
+	[RK3228_PD_PERI]	= DOMAIN_RK3036(9, 9, 25, true),
+	[RK3228_PD_GMAC]	= DOMAIN_RK3036(10, 10, 26, false),
+};
+
 static const struct rockchip_domain_info rk3288_pm_domains[] = {
 	[RK3288_PD_VIO]		= DOMAIN_RK3288(7, 7, 4, false),
 	[RK3288_PD_HEVC]	= DOMAIN_RK3288(14, 10, 9, false),
@@ -767,6 +826,46 @@ static const struct rockchip_domain_info rk3399_pm_domains[] = {
 	[RK3399_PD_SDIOAUDIO]	= DOMAIN_RK3399(31, 31, 29, true),
 };
 
+static const struct rockchip_pmu_info px30_pmu = {
+	.pwr_offset = 0x18,
+	.status_offset = 0x20,
+	.req_offset = 0x64,
+	.idle_offset = 0x6c,
+	.ack_offset = 0x6c,
+
+	.num_domains = ARRAY_SIZE(px30_pm_domains),
+	.domain_info = px30_pm_domains,
+};
+
+static const struct rockchip_pmu_info rk3036_pmu = {
+	.req_offset = 0x148,
+	.idle_offset = 0x14c,
+	.ack_offset = 0x14c,
+
+	.num_domains = ARRAY_SIZE(rk3036_pm_domains),
+	.domain_info = rk3036_pm_domains,
+};
+
+static const struct rockchip_pmu_info rk3128_pmu = {
+	.pwr_offset = 0x04,
+	.status_offset = 0x08,
+	.req_offset = 0x0c,
+	.idle_offset = 0x10,
+	.ack_offset = 0x10,
+
+	.num_domains = ARRAY_SIZE(rk3128_pm_domains),
+	.domain_info = rk3128_pm_domains,
+};
+
+static const struct rockchip_pmu_info rk3228_pmu = {
+	.req_offset = 0x40c,
+	.idle_offset = 0x488,
+	.ack_offset = 0x488,
+
+	.num_domains = ARRAY_SIZE(rk3228_pm_domains),
+	.domain_info = rk3228_pm_domains,
+};
+
 static const struct rockchip_pmu_info rk3288_pmu = {
 	.pwr_offset = 0x08,
 	.status_offset = 0x0c,
@@ -841,6 +940,22 @@ static const struct rockchip_pmu_info rk3399_pmu = {
 };
 
 static const struct of_device_id rockchip_pm_domain_dt_match[] = {
+	{
+		.compatible = "rockchip,px30-power-controller",
+		.data = (void *)&px30_pmu,
+	},
+	{
+		.compatible = "rockchip,rk3036-power-controller",
+		.data = (void *)&rk3036_pmu,
+	},
+	{
+		.compatible = "rockchip,rk3128-power-controller",
+		.data = (void *)&rk3128_pmu,
+	},
+	{
+		.compatible = "rockchip,rk3228-power-controller",
+		.data = (void *)&rk3228_pmu,
+	},
 	{
 		.compatible = "rockchip,rk3288-power-controller",
 		.data = (void *)&rk3288_pmu,

drivers/soc/samsung/pm_domains.c

@@ -13,14 +13,11 @@
 #include <linux/err.h>
 #include <linux/slab.h>
 #include <linux/pm_domain.h>
-#include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
 #include <linux/sched.h>
 
-#define MAX_CLK_PER_DOMAIN	4
-
 struct exynos_pm_domain_config {
 	/* Value for LOCAL_PWR_CFG and STATUS fields for each domain */
 	u32 local_pwr_cfg;
@@ -33,10 +30,6 @@ struct exynos_pm_domain {
 	void __iomem *base;
 	bool is_off;
 	struct generic_pm_domain pd;
-	struct clk *oscclk;
-	struct clk *clk[MAX_CLK_PER_DOMAIN];
-	struct clk *pclk[MAX_CLK_PER_DOMAIN];
-	struct clk *asb_clk[MAX_CLK_PER_DOMAIN];
 	u32 local_pwr_cfg;
 };
 
@@ -46,29 +39,10 @@ static int exynos_pd_power(struct generic_pm_domain *domain, bool power_on)
 	void __iomem *base;
 	u32 timeout, pwr;
 	char *op;
-	int i;
 
 	pd = container_of(domain, struct exynos_pm_domain, pd);
 	base = pd->base;
 
-	for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) {
-		if (IS_ERR(pd->asb_clk[i]))
-			break;
-		clk_prepare_enable(pd->asb_clk[i]);
-	}
-
-	/* Set oscclk before powering off a domain*/
-	if (!power_on) {
-		for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) {
-			if (IS_ERR(pd->clk[i]))
-				break;
-			pd->pclk[i] = clk_get_parent(pd->clk[i]);
-			if (clk_set_parent(pd->clk[i], pd->oscclk))
-				pr_err("%s: error setting oscclk as parent to clock %d\n",
-						domain->name, i);
-		}
-	}
-
 	pwr = power_on ? pd->local_pwr_cfg : 0;
 	writel_relaxed(pwr, base);
 
@@ -86,26 +60,6 @@ static int exynos_pd_power(struct generic_pm_domain *domain, bool power_on)
 		usleep_range(80, 100);
 	}
 
-	/* Restore clocks after powering on a domain*/
-	if (power_on) {
-		for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) {
-			if (IS_ERR(pd->clk[i]))
-				break;
-
-			if (IS_ERR(pd->pclk[i]))
-				continue; /* Skip on first power up */
-			if (clk_set_parent(pd->clk[i], pd->pclk[i]))
-				pr_err("%s: error setting parent to clock%d\n",
-						domain->name, i);
-		}
-	}
-
-	for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) {
-		if (IS_ERR(pd->asb_clk[i]))
-			break;
-		clk_disable_unprepare(pd->asb_clk[i]);
-	}
-
 	return 0;
 }
 
@@ -147,12 +101,6 @@ static __init const char *exynos_get_domain_name(struct device_node *node)
 	return kstrdup_const(name, GFP_KERNEL);
 }
 
-static const char *soc_force_no_clk[] = {
-	"samsung,exynos5250-clock",
-	"samsung,exynos5420-clock",
-	"samsung,exynos5800-clock",
-};
-
 static __init int exynos4_pm_init_power_domain(void)
 {
 	struct device_node *np;
@@ -161,7 +109,7 @@ static __init int exynos4_pm_init_power_domain(void)
 	for_each_matching_node_and_match(np, exynos_pm_domain_of_match, &match) {
 		const struct exynos_pm_domain_config *pm_domain_cfg;
 		struct exynos_pm_domain *pd;
-		int on, i;
+		int on;
 
 		pm_domain_cfg = match->data;
 
@@ -189,42 +137,6 @@ static __init int exynos4_pm_init_power_domain(void)
 		pd->pd.power_on = exynos_pd_power_on;
 		pd->local_pwr_cfg = pm_domain_cfg->local_pwr_cfg;
 
-		for (i = 0; i < ARRAY_SIZE(soc_force_no_clk); i++)
-			if (of_find_compatible_node(NULL, NULL,
-						    soc_force_no_clk[i]))
-				goto no_clk;
-
-		for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) {
-			char clk_name[8];
-
-			snprintf(clk_name, sizeof(clk_name), "asb%d", i);
-			pd->asb_clk[i] = of_clk_get_by_name(np, clk_name);
-			if (IS_ERR(pd->asb_clk[i]))
-				break;
-		}
-
-		pd->oscclk = of_clk_get_by_name(np, "oscclk");
-		if (IS_ERR(pd->oscclk))
-			goto no_clk;
-
-		for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) {
-			char clk_name[8];
-
-			snprintf(clk_name, sizeof(clk_name), "clk%d", i);
-			pd->clk[i] = of_clk_get_by_name(np, clk_name);
-			if (IS_ERR(pd->clk[i]))
-				break;
-			/*
-			 * Skip setting parent on first power up.
-			 * The parent at this time may not be useful at all.
-			 */
-			pd->pclk[i] = ERR_PTR(-EINVAL);
-		}
-
-		if (IS_ERR(pd->clk[0]))
-			clk_put(pd->oscclk);
-
-no_clk:
 		on = readl_relaxed(pd->base + 0x4) & pd->local_pwr_cfg;
 
 		pm_genpd_init(&pd->pd, NULL, !on);

drivers/soc/ti/knav_qmss.h

@@ -19,6 +19,8 @@
 #ifndef __KNAV_QMSS_H__
 #define __KNAV_QMSS_H__
 
+#include <linux/percpu.h>
+
 #define THRESH_GTE	BIT(7)
 #define THRESH_LT	0
 
@@ -162,11 +164,11 @@ struct knav_qmgr_info {
  * notifies:			notifier counts
  */
 struct knav_queue_stats {
-	atomic_t	 pushes;
-	atomic_t	 pops;
-	atomic_t	 push_errors;
-	atomic_t	 pop_errors;
-	atomic_t	 notifies;
+	unsigned int pushes;
+	unsigned int pops;
+	unsigned int push_errors;
+	unsigned int pop_errors;
+	unsigned int notifies;
 };
 
 /**
@@ -283,7 +285,7 @@ struct knav_queue_inst {
 struct knav_queue {
 	struct knav_reg_queue __iomem	*reg_push, *reg_pop, *reg_peek;
 	struct knav_queue_inst		*inst;
-	struct knav_queue_stats	stats;
+	struct knav_queue_stats __percpu	*stats;
 	knav_queue_notify_fn		notifier_fn;
 	void				*notifier_fn_arg;
 	atomic_t			notifier_enabled;

drivers/soc/ti/knav_qmss_queue.c

@@ -99,7 +99,7 @@ void knav_queue_notify(struct knav_queue_inst *inst)
 			continue;
 		if (WARN_ON(!qh->notifier_fn))
 			continue;
-		atomic_inc(&qh->stats.notifies);
+		this_cpu_inc(qh->stats->notifies);
 		qh->notifier_fn(qh->notifier_fn_arg);
 	}
 	rcu_read_unlock();
@@ -230,6 +230,12 @@ static struct knav_queue *__knav_queue_open(struct knav_queue_inst *inst,
 	if (!qh)
 		return ERR_PTR(-ENOMEM);
 
+	qh->stats = alloc_percpu(struct knav_queue_stats);
+	if (!qh->stats) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
 	qh->flags = flags;
 	qh->inst = inst;
 	id = inst->id - inst->qmgr->start_queue;
@@ -245,13 +251,17 @@ static struct knav_queue *__knav_queue_open(struct knav_queue_inst *inst,
 		if (range->ops && range->ops->open_queue)
 			ret = range->ops->open_queue(range, inst, flags);
 
-		if (ret) {
-			devm_kfree(inst->kdev->dev, qh);
-			return ERR_PTR(ret);
-		}
+		if (ret)
+			goto err;
 	}
 	list_add_tail_rcu(&qh->list, &inst->handles);
 	return qh;
+
+err:
+	if (qh->stats)
+		free_percpu(qh->stats);
+	devm_kfree(inst->kdev->dev, qh);
+	return ERR_PTR(ret);
 }
 
 static struct knav_queue *
@@ -427,6 +437,12 @@ static void knav_queue_debug_show_instance(struct seq_file *s,
 {
 	struct knav_device *kdev = inst->kdev;
 	struct knav_queue *qh;
+	int cpu = 0;
+	int pushes = 0;
+	int pops = 0;
+	int push_errors = 0;
+	int pop_errors = 0;
+	int notifies = 0;
 
 	if (!knav_queue_is_busy(inst))
 		return;
@@ -434,19 +450,22 @@ static void knav_queue_debug_show_instance(struct seq_file *s,
 	seq_printf(s, "\tqueue id %d (%s)\n",
 		   kdev->base_id + inst->id, inst->name);
 	for_each_handle_rcu(qh, inst) {
-		seq_printf(s, "\t\thandle %p: ", qh);
-		seq_printf(s, "pushes %8d, ",
-			   atomic_read(&qh->stats.pushes));
-		seq_printf(s, "pops %8d, ",
-			   atomic_read(&qh->stats.pops));
-		seq_printf(s, "count %8d, ",
-			   knav_queue_get_count(qh));
-		seq_printf(s, "notifies %8d, ",
-			   atomic_read(&qh->stats.notifies));
-		seq_printf(s, "push errors %8d, ",
-			   atomic_read(&qh->stats.push_errors));
-		seq_printf(s, "pop errors %8d\n",
-			   atomic_read(&qh->stats.pop_errors));
+		for_each_possible_cpu(cpu) {
+			pushes += per_cpu_ptr(qh->stats, cpu)->pushes;
+			pops += per_cpu_ptr(qh->stats, cpu)->pops;
+			push_errors += per_cpu_ptr(qh->stats, cpu)->push_errors;
+			pop_errors += per_cpu_ptr(qh->stats, cpu)->pop_errors;
+			notifies += per_cpu_ptr(qh->stats, cpu)->notifies;
+		}
+
+		seq_printf(s, "\t\thandle %p: pushes %8d, pops %8d, count %8d, notifies %8d, push errors %8d, pop errors %8d\n",
+				qh,
+				pushes,
+				pops,
+				knav_queue_get_count(qh),
+				notifies,
+				push_errors,
+				pop_errors);
 	}
 }
 
@@ -563,6 +582,7 @@ void knav_queue_close(void *qhandle)
 		if (range->ops && range->ops->close_queue)
 			range->ops->close_queue(range, inst);
 	}
+	free_percpu(qh->stats);
 	devm_kfree(inst->kdev->dev, qh);
 }
 EXPORT_SYMBOL_GPL(knav_queue_close);
@@ -636,7 +656,7 @@ int knav_queue_push(void *qhandle, dma_addr_t dma,
 	val = (u32)dma | ((size / 16) - 1);
 	writel_relaxed(val, &qh->reg_push[0].ptr_size_thresh);
 
-	atomic_inc(&qh->stats.pushes);
+	this_cpu_inc(qh->stats->pushes);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(knav_queue_push);
@@ -674,7 +694,7 @@ dma_addr_t knav_queue_pop(void *qhandle, unsigned *size)
 	if (size)
 		*size = ((val & DESC_SIZE_MASK) + 1) * 16;
 
-	atomic_inc(&qh->stats.pops);
+	this_cpu_inc(qh->stats->pops);
 	return dma;
 }
 EXPORT_SYMBOL_GPL(knav_queue_pop);

include/dt-bindings/memory/tegra114-mc.h

@@ -23,4 +23,21 @@
 #define TEGRA_SWGROUP_EMUCIF	18
 #define TEGRA_SWGROUP_TSEC	19
 
+#define TEGRA114_MC_RESET_AVPC		0
+#define TEGRA114_MC_RESET_DC		1
+#define TEGRA114_MC_RESET_DCB		2
+#define TEGRA114_MC_RESET_EPP		3
+#define TEGRA114_MC_RESET_2D		4
+#define TEGRA114_MC_RESET_HC		5
+#define TEGRA114_MC_RESET_HDA		6
+#define TEGRA114_MC_RESET_ISP		7
+#define TEGRA114_MC_RESET_MPCORE	8
+#define TEGRA114_MC_RESET_MPCORELP	9
+#define TEGRA114_MC_RESET_MPE		10
+#define TEGRA114_MC_RESET_3D		11
+#define TEGRA114_MC_RESET_3D2		12
+#define TEGRA114_MC_RESET_PPCS		13
+#define TEGRA114_MC_RESET_VDE		14
+#define TEGRA114_MC_RESET_VI		15
+
 #endif

include/dt-bindings/memory/tegra124-mc.h

@@ -29,4 +29,29 @@
 #define TEGRA_SWGROUP_VIC	24
 #define TEGRA_SWGROUP_VI	25
 
+#define TEGRA124_MC_RESET_AFI		0
+#define TEGRA124_MC_RESET_AVPC		1
+#define TEGRA124_MC_RESET_DC		2
+#define TEGRA124_MC_RESET_DCB		3
+#define TEGRA124_MC_RESET_HC		4
+#define TEGRA124_MC_RESET_HDA		5
+#define TEGRA124_MC_RESET_ISP2		6
+#define TEGRA124_MC_RESET_MPCORE	7
+#define TEGRA124_MC_RESET_MPCORELP	8
+#define TEGRA124_MC_RESET_MSENC		9
+#define TEGRA124_MC_RESET_PPCS		10
+#define TEGRA124_MC_RESET_SATA		11
+#define TEGRA124_MC_RESET_VDE		12
+#define TEGRA124_MC_RESET_VI		13
+#define TEGRA124_MC_RESET_VIC		14
+#define TEGRA124_MC_RESET_XUSB_HOST	15
+#define TEGRA124_MC_RESET_XUSB_DEV	16
+#define TEGRA124_MC_RESET_TSEC		17
+#define TEGRA124_MC_RESET_SDMMC1	18
+#define TEGRA124_MC_RESET_SDMMC2	19
+#define TEGRA124_MC_RESET_SDMMC3	20
+#define TEGRA124_MC_RESET_SDMMC4	21
+#define TEGRA124_MC_RESET_ISP2B		22
+#define TEGRA124_MC_RESET_GPU		23
+
 #endif

include/dt-bindings/memory/tegra20-mc.h

@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef DT_BINDINGS_MEMORY_TEGRA20_MC_H
+#define DT_BINDINGS_MEMORY_TEGRA20_MC_H
+
+#define TEGRA20_MC_RESET_AVPC		0
+#define TEGRA20_MC_RESET_DC		1
+#define TEGRA20_MC_RESET_DCB		2
+#define TEGRA20_MC_RESET_EPP		3
+#define TEGRA20_MC_RESET_2D		4
+#define TEGRA20_MC_RESET_HC		5
+#define TEGRA20_MC_RESET_ISP		6
+#define TEGRA20_MC_RESET_MPCORE		7
+#define TEGRA20_MC_RESET_MPEA		8
+#define TEGRA20_MC_RESET_MPEB		9
+#define TEGRA20_MC_RESET_MPEC		10
+#define TEGRA20_MC_RESET_3D		11
+#define TEGRA20_MC_RESET_PPCS		12
+#define TEGRA20_MC_RESET_VDE		13
+#define TEGRA20_MC_RESET_VI		14
+
+#endif

include/dt-bindings/memory/tegra210-mc.h

@@ -34,4 +34,35 @@
 #define TEGRA_SWGROUP_ETR	29
 #define TEGRA_SWGROUP_TSECB	30
 
+#define TEGRA210_MC_RESET_AFI		0
+#define TEGRA210_MC_RESET_AVPC		1
+#define TEGRA210_MC_RESET_DC		2
+#define TEGRA210_MC_RESET_DCB		3
+#define TEGRA210_MC_RESET_HC		4
+#define TEGRA210_MC_RESET_HDA		5
+#define TEGRA210_MC_RESET_ISP2		6
+#define TEGRA210_MC_RESET_MPCORE	7
+#define TEGRA210_MC_RESET_NVENC		8
+#define TEGRA210_MC_RESET_PPCS		9
+#define TEGRA210_MC_RESET_SATA		10
+#define TEGRA210_MC_RESET_VI		11
+#define TEGRA210_MC_RESET_VIC		12
+#define TEGRA210_MC_RESET_XUSB_HOST	13
+#define TEGRA210_MC_RESET_XUSB_DEV	14
+#define TEGRA210_MC_RESET_A9AVP		15
+#define TEGRA210_MC_RESET_TSEC		16
+#define TEGRA210_MC_RESET_SDMMC1	17
+#define TEGRA210_MC_RESET_SDMMC2	18
+#define TEGRA210_MC_RESET_SDMMC3	19
+#define TEGRA210_MC_RESET_SDMMC4	20
+#define TEGRA210_MC_RESET_ISP2B		21
+#define TEGRA210_MC_RESET_GPU		22
+#define TEGRA210_MC_RESET_NVDEC		23
+#define TEGRA210_MC_RESET_APE		24
+#define TEGRA210_MC_RESET_SE		25
+#define TEGRA210_MC_RESET_NVJPG		26
+#define TEGRA210_MC_RESET_AXIAP		27
+#define TEGRA210_MC_RESET_ETR		28
+#define TEGRA210_MC_RESET_TSECB		29
+
 #endif

include/dt-bindings/memory/tegra30-mc.h

@@ -22,4 +22,23 @@
 #define TEGRA_SWGROUP_MPCORE	17
 #define TEGRA_SWGROUP_ISP	18
 
+#define TEGRA30_MC_RESET_AFI		0
+#define TEGRA30_MC_RESET_AVPC		1
+#define TEGRA30_MC_RESET_DC		2
+#define TEGRA30_MC_RESET_DCB		3
+#define TEGRA30_MC_RESET_EPP		4
+#define TEGRA30_MC_RESET_2D		5
+#define TEGRA30_MC_RESET_HC		6
+#define TEGRA30_MC_RESET_HDA		7
+#define TEGRA30_MC_RESET_ISP		8
+#define TEGRA30_MC_RESET_MPCORE		9
+#define TEGRA30_MC_RESET_MPCORELP	10
+#define TEGRA30_MC_RESET_MPE		11
+#define TEGRA30_MC_RESET_3D		12
+#define TEGRA30_MC_RESET_3D2		13
+#define TEGRA30_MC_RESET_PPCS		14
+#define TEGRA30_MC_RESET_SATA		15
+#define TEGRA30_MC_RESET_VDE		16
+#define TEGRA30_MC_RESET_VI		17
+
 #endif

include/dt-bindings/power/px30-power.h

@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DT_BINDINGS_POWER_PX30_POWER_H__
+#define __DT_BINDINGS_POWER_PX30_POWER_H__
+
+/* VD_CORE */
+#define PX30_PD_A35_0		0
+#define PX30_PD_A35_1		1
+#define PX30_PD_A35_2		2
+#define PX30_PD_A35_3		3
+#define PX30_PD_SCU		4
+
+/* VD_LOGIC */
+#define PX30_PD_USB		5
+#define PX30_PD_DDR		6
+#define PX30_PD_SDCARD		7
+#define PX30_PD_CRYPTO		8
+#define PX30_PD_GMAC		9
+#define PX30_PD_MMC_NAND	10
+#define PX30_PD_VPU		11
+#define PX30_PD_VO		12
+#define PX30_PD_VI		13
+#define PX30_PD_GPU		14
+
+/* VD_PMU */
+#define PX30_PD_PMU		15
+
+#endif

include/dt-bindings/power/rk3036-power.h

@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DT_BINDINGS_POWER_RK3036_POWER_H__
+#define __DT_BINDINGS_POWER_RK3036_POWER_H__
+
+#define RK3036_PD_MSCH		0
+#define RK3036_PD_CORE		1
+#define RK3036_PD_PERI		2
+#define RK3036_PD_VIO		3
+#define RK3036_PD_VPU		4
+#define RK3036_PD_GPU		5
+#define RK3036_PD_SYS		6
+
+#endif

include/dt-bindings/power/rk3128-power.h

@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DT_BINDINGS_POWER_RK3128_POWER_H__
+#define __DT_BINDINGS_POWER_RK3128_POWER_H__
+
+/* VD_CORE */
+#define RK3128_PD_CORE		0
+
+/* VD_LOGIC */
+#define RK3128_PD_VIO		1
+#define RK3128_PD_VIDEO		2
+#define RK3128_PD_GPU		3
+#define RK3128_PD_MSCH		4
+
+#endif

include/dt-bindings/power/rk3228-power.h

@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DT_BINDINGS_POWER_RK3228_POWER_H__
+#define __DT_BINDINGS_POWER_RK3228_POWER_H__
+
+/**
+ * RK3228 idle id Summary.
+ */
+
+#define RK3228_PD_CORE		0
+#define RK3228_PD_MSCH		1
+#define RK3228_PD_BUS		2
+#define RK3228_PD_SYS		3
+#define RK3228_PD_VIO		4
+#define RK3228_PD_VOP		5
+#define RK3228_PD_VPU		6
+#define RK3228_PD_RKVDEC	7
+#define RK3228_PD_GPU		8
+#define RK3228_PD_PERI		9
+#define RK3228_PD_GMAC		10
+
+#endif

include/linux/platform_data/ti-aemif.h

@@ -16,8 +16,33 @@
 
 #include <linux/of_platform.h>
 
+/**
+ * struct aemif_abus_data - Async bus configuration parameters.
+ *
+ * @cs - Chip-select number.
+ */
+struct aemif_abus_data {
+	u32 cs;
+};
+
+/**
+ * struct aemif_platform_data - Data to set up the TI aemif driver.
+ *
+ * @dev_lookup: of_dev_auxdata passed to of_platform_populate() for aemif
+ *              subdevices.
+ * @cs_offset: Lowest allowed chip-select number.
+ * @abus_data: Array of async bus configuration entries.
+ * @num_abus_data: Number of abus entries.
+ * @sub_devices: Array of platform subdevices.
+ * @num_sub_devices: Number of subdevices.
+ */
 struct aemif_platform_data {
 	struct of_dev_auxdata *dev_lookup;
+	u32 cs_offset;
+	struct aemif_abus_data *abus_data;
+	size_t num_abus_data;
+	struct platform_device *sub_devices;
+	size_t num_sub_devices;
 };
 
 #endif /* __TI_DAVINCI_AEMIF_DATA_H__ */

include/linux/scmi_protocol.h

@@ -85,8 +85,8 @@ struct scmi_clk_ops {
  * @level_set: sets the performance level of a domain
  * @level_get: gets the performance level of a domain
  * @device_domain_id: gets the scmi domain id for a given device
- * @get_transition_latency: gets the DVFS transition latency for a given device
- * @add_opps_to_device: adds all the OPPs for a given device
+ * @transition_latency_get: gets the DVFS transition latency for a given device
+ * @device_opps_add: adds all the OPPs for a given device
  * @freq_set: sets the frequency for a given device using sustained frequency
  *	to sustained performance level mapping
  * @freq_get: gets the frequency for a given device using sustained frequency
@@ -102,10 +102,10 @@ struct scmi_perf_ops {
 	int (*level_get)(const struct scmi_handle *handle, u32 domain,
 			 u32 *level, bool poll);
 	int (*device_domain_id)(struct device *dev);
-	int (*get_transition_latency)(const struct scmi_handle *handle,
+	int (*transition_latency_get)(const struct scmi_handle *handle,
 				      struct device *dev);
-	int (*add_opps_to_device)(const struct scmi_handle *handle,
-				  struct device *dev);
+	int (*device_opps_add)(const struct scmi_handle *handle,
+			       struct device *dev);
 	int (*freq_set)(const struct scmi_handle *handle, u32 domain,
 			unsigned long rate, bool poll);
 	int (*freq_get)(const struct scmi_handle *handle, u32 domain,
@@ -189,6 +189,14 @@ struct scmi_sensor_ops {
  * @perf_ops: pointer to set of performance protocol operations
  * @clk_ops: pointer to set of clock protocol operations
  * @sensor_ops: pointer to set of sensor protocol operations
+ * @perf_priv: pointer to private data structure specific to performance
+ *	protocol(for internal use only)
+ * @clk_priv: pointer to private data structure specific to clock
+ *	protocol(for internal use only)
+ * @power_priv: pointer to private data structure specific to power
+ *	protocol(for internal use only)
+ * @sensor_priv: pointer to private data structure specific to sensors
+ *	protocol(for internal use only)
  */
 struct scmi_handle {
 	struct device *dev;

include/linux/soc/ti/ti_sci_protocol.h

@@ -1,17 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Texas Instruments System Control Interface Protocol
  *
  * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
  *	Nishanth Menon
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #ifndef __TISCI_PROTOCOL_H

include/soc/tegra/cpuidle.h

@@ -14,7 +14,7 @@
 #ifndef __SOC_TEGRA_CPUIDLE_H__
 #define __SOC_TEGRA_CPUIDLE_H__
 
-#if defined(CONFIG_ARM) && defined(CONFIG_CPU_IDLE)
+#if defined(CONFIG_ARM) && defined(CONFIG_ARCH_TEGRA) && defined(CONFIG_CPU_IDLE)
 void tegra_cpuidle_pcie_irqs_in_use(void);
 #else
 static inline void tegra_cpuidle_pcie_irqs_in_use(void)

include/soc/tegra/mc.h

@@ -9,6 +9,7 @@
 #ifndef __SOC_TEGRA_MC_H__
 #define __SOC_TEGRA_MC_H__
 
+#include <linux/reset-controller.h>
 #include <linux/types.h>
 
 struct clk;
@@ -95,6 +96,30 @@ static inline void tegra_smmu_remove(struct tegra_smmu *smmu)
 }
 #endif
 
+struct tegra_mc_reset {
+	const char *name;
+	unsigned long id;
+	unsigned int control;
+	unsigned int status;
+	unsigned int reset;
+	unsigned int bit;
+};
+
+struct tegra_mc_reset_ops {
+	int (*hotreset_assert)(struct tegra_mc *mc,
+			       const struct tegra_mc_reset *rst);
+	int (*hotreset_deassert)(struct tegra_mc *mc,
+				 const struct tegra_mc_reset *rst);
+	int (*block_dma)(struct tegra_mc *mc,
+			 const struct tegra_mc_reset *rst);
+	bool (*dma_idling)(struct tegra_mc *mc,
+			   const struct tegra_mc_reset *rst);
+	int (*unblock_dma)(struct tegra_mc *mc,
+			   const struct tegra_mc_reset *rst);
+	int (*reset_status)(struct tegra_mc *mc,
+			    const struct tegra_mc_reset *rst);
+};
+
 struct tegra_mc_soc {
 	const struct tegra_mc_client *clients;
 	unsigned int num_clients;
@@ -108,12 +133,18 @@ struct tegra_mc_soc {
 	u8 client_id_mask;
 
 	const struct tegra_smmu_soc *smmu;
+
+	u32 intmask;
+
+	const struct tegra_mc_reset_ops *reset_ops;
+	const struct tegra_mc_reset *resets;
+	unsigned int num_resets;
 };
 
 struct tegra_mc {
 	struct device *dev;
 	struct tegra_smmu *smmu;
-	void __iomem *regs;
+	void __iomem *regs, *regs2;
 	struct clk *clk;
 	int irq;
 
@@ -122,6 +153,10 @@ struct tegra_mc {
 
 	struct tegra_mc_timing *timings;
 	unsigned int num_timings;
+
+	struct reset_controller_dev reset;
+
+	spinlock_t lock;
 };
 
 void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate);