|
|
@@ -0,0 +1,541 @@
|
|
|
+/*
|
|
|
+ * AHCI SATA platform library
|
|
|
+ *
|
|
|
+ * Copyright 2004-2005 Red Hat, Inc.
|
|
|
+ * Jeff Garzik <jgarzik@pobox.com>
|
|
|
+ * Copyright 2010 MontaVista Software, LLC.
|
|
|
+ * Anton Vorontsov <avorontsov@ru.mvista.com>
|
|
|
+ *
|
|
|
+ * This program is free software; you can redistribute it and/or modify
|
|
|
+ * it under the terms of the GNU General Public License as published by
|
|
|
+ * the Free Software Foundation; either version 2, or (at your option)
|
|
|
+ * any later version.
|
|
|
+ */
|
|
|
+
|
|
|
+#include <linux/clk.h>
|
|
|
+#include <linux/kernel.h>
|
|
|
+#include <linux/gfp.h>
|
|
|
+#include <linux/module.h>
|
|
|
+#include <linux/pm.h>
|
|
|
+#include <linux/interrupt.h>
|
|
|
+#include <linux/device.h>
|
|
|
+#include <linux/platform_device.h>
|
|
|
+#include <linux/libata.h>
|
|
|
+#include <linux/ahci_platform.h>
|
|
|
+#include <linux/phy/phy.h>
|
|
|
+#include <linux/pm_runtime.h>
|
|
|
+#include "ahci.h"
|
|
|
+
|
|
|
+static void ahci_host_stop(struct ata_host *host);
|
|
|
+
|
|
|
+struct ata_port_operations ahci_platform_ops = {
|
|
|
+ .inherits = &ahci_ops,
|
|
|
+ .host_stop = ahci_host_stop,
|
|
|
+};
|
|
|
+EXPORT_SYMBOL_GPL(ahci_platform_ops);
|
|
|
+
|
|
|
+static struct scsi_host_template ahci_platform_sht = {
|
|
|
+ AHCI_SHT("ahci_platform"),
|
|
|
+};
|
|
|
+
|
|
|
+/**
|
|
|
+ * ahci_platform_enable_clks - Enable platform clocks
|
|
|
+ * @hpriv: host private area to store config values
|
|
|
+ *
|
|
|
+ * This function enables all the clks found in hpriv->clks, starting at
|
|
|
+ * index 0. If any clk fails to enable it disables all the clks already
|
|
|
+ * enabled in reverse order, and then returns an error.
|
|
|
+ *
|
|
|
+ * RETURNS:
|
|
|
+ * 0 on success otherwise a negative error code
|
|
|
+ */
|
|
|
+int ahci_platform_enable_clks(struct ahci_host_priv *hpriv)
|
|
|
+{
|
|
|
+ int c, rc;
|
|
|
+
|
|
|
+ for (c = 0; c < AHCI_MAX_CLKS && hpriv->clks[c]; c++) {
|
|
|
+ rc = clk_prepare_enable(hpriv->clks[c]);
|
|
|
+ if (rc)
|
|
|
+ goto disable_unprepare_clk;
|
|
|
+ }
|
|
|
+ return 0;
|
|
|
+
|
|
|
+disable_unprepare_clk:
|
|
|
+ while (--c >= 0)
|
|
|
+ clk_disable_unprepare(hpriv->clks[c]);
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+EXPORT_SYMBOL_GPL(ahci_platform_enable_clks);
|
|
|
+
|
|
|
+/**
|
|
|
+ * ahci_platform_disable_clks - Disable platform clocks
|
|
|
+ * @hpriv: host private area to store config values
|
|
|
+ *
|
|
|
+ * This function disables all the clks found in hpriv->clks, in reverse
|
|
|
+ * order of ahci_platform_enable_clks (starting at the end of the array).
|
|
|
+ */
|
|
|
+void ahci_platform_disable_clks(struct ahci_host_priv *hpriv)
|
|
|
+{
|
|
|
+ int c;
|
|
|
+
|
|
|
+ for (c = AHCI_MAX_CLKS - 1; c >= 0; c--)
|
|
|
+ if (hpriv->clks[c])
|
|
|
+ clk_disable_unprepare(hpriv->clks[c]);
|
|
|
+}
|
|
|
+EXPORT_SYMBOL_GPL(ahci_platform_disable_clks);
|
|
|
+
|
|
|
+/**
|
|
|
+ * ahci_platform_enable_resources - Enable platform resources
|
|
|
+ * @hpriv: host private area to store config values
|
|
|
+ *
|
|
|
+ * This function enables all ahci_platform managed resources in the
|
|
|
+ * following order:
|
|
|
+ * 1) Regulator
|
|
|
+ * 2) Clocks (through ahci_platform_enable_clks)
|
|
|
+ * 3) Phy
|
|
|
+ *
|
|
|
+ * If resource enabling fails at any point the previous enabled resources
|
|
|
+ * are disabled in reverse order.
|
|
|
+ *
|
|
|
+ * RETURNS:
|
|
|
+ * 0 on success otherwise a negative error code
|
|
|
+ */
|
|
|
+int ahci_platform_enable_resources(struct ahci_host_priv *hpriv)
|
|
|
+{
|
|
|
+ int rc;
|
|
|
+
|
|
|
+ if (hpriv->target_pwr) {
|
|
|
+ rc = regulator_enable(hpriv->target_pwr);
|
|
|
+ if (rc)
|
|
|
+ return rc;
|
|
|
+ }
|
|
|
+
|
|
|
+ rc = ahci_platform_enable_clks(hpriv);
|
|
|
+ if (rc)
|
|
|
+ goto disable_regulator;
|
|
|
+
|
|
|
+ if (hpriv->phy) {
|
|
|
+ rc = phy_init(hpriv->phy);
|
|
|
+ if (rc)
|
|
|
+ goto disable_clks;
|
|
|
+
|
|
|
+ rc = phy_power_on(hpriv->phy);
|
|
|
+ if (rc) {
|
|
|
+ phy_exit(hpriv->phy);
|
|
|
+ goto disable_clks;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+disable_clks:
|
|
|
+ ahci_platform_disable_clks(hpriv);
|
|
|
+
|
|
|
+disable_regulator:
|
|
|
+ if (hpriv->target_pwr)
|
|
|
+ regulator_disable(hpriv->target_pwr);
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+EXPORT_SYMBOL_GPL(ahci_platform_enable_resources);
|
|
|
+
|
|
|
+/**
|
|
|
+ * ahci_platform_disable_resources - Disable platform resources
|
|
|
+ * @hpriv: host private area to store config values
|
|
|
+ *
|
|
|
+ * This function disables all ahci_platform managed resources in the
|
|
|
+ * following order:
|
|
|
+ * 1) Phy
|
|
|
+ * 2) Clocks (through ahci_platform_disable_clks)
|
|
|
+ * 3) Regulator
|
|
|
+ */
|
|
|
+void ahci_platform_disable_resources(struct ahci_host_priv *hpriv)
|
|
|
+{
|
|
|
+ if (hpriv->phy) {
|
|
|
+ phy_power_off(hpriv->phy);
|
|
|
+ phy_exit(hpriv->phy);
|
|
|
+ }
|
|
|
+
|
|
|
+ ahci_platform_disable_clks(hpriv);
|
|
|
+
|
|
|
+ if (hpriv->target_pwr)
|
|
|
+ regulator_disable(hpriv->target_pwr);
|
|
|
+}
|
|
|
+EXPORT_SYMBOL_GPL(ahci_platform_disable_resources);
|
|
|
+
|
|
|
+static void ahci_platform_put_resources(struct device *dev, void *res)
|
|
|
+{
|
|
|
+ struct ahci_host_priv *hpriv = res;
|
|
|
+ int c;
|
|
|
+
|
|
|
+ if (hpriv->got_runtime_pm) {
|
|
|
+ pm_runtime_put_sync(dev);
|
|
|
+ pm_runtime_disable(dev);
|
|
|
+ }
|
|
|
+
|
|
|
+ for (c = 0; c < AHCI_MAX_CLKS && hpriv->clks[c]; c++)
|
|
|
+ clk_put(hpriv->clks[c]);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * ahci_platform_get_resources - Get platform resources
|
|
|
+ * @pdev: platform device to get resources for
|
|
|
+ *
|
|
|
+ * This function allocates an ahci_host_priv struct, and gets the following
|
|
|
+ * resources, storing a reference to them inside the returned struct:
|
|
|
+ *
|
|
|
+ * 1) mmio registers (IORESOURCE_MEM 0, mandatory)
|
|
|
+ * 2) regulator for controlling the targets power (optional)
|
|
|
+ * 3) 0 - AHCI_MAX_CLKS clocks, as specified in the devs devicetree node,
|
|
|
+ * or for non devicetree enabled platforms a single clock
|
|
|
+ * 4) phy (optional)
|
|
|
+ *
|
|
|
+ * RETURNS:
|
|
|
+ * The allocated ahci_host_priv on success, otherwise an ERR_PTR value
|
|
|
+ */
|
|
|
+struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev)
|
|
|
+{
|
|
|
+ struct device *dev = &pdev->dev;
|
|
|
+ struct ahci_host_priv *hpriv;
|
|
|
+ struct clk *clk;
|
|
|
+ int i, rc = -ENOMEM;
|
|
|
+
|
|
|
+ if (!devres_open_group(dev, NULL, GFP_KERNEL))
|
|
|
+ return ERR_PTR(-ENOMEM);
|
|
|
+
|
|
|
+ hpriv = devres_alloc(ahci_platform_put_resources, sizeof(*hpriv),
|
|
|
+ GFP_KERNEL);
|
|
|
+ if (!hpriv)
|
|
|
+ goto err_out;
|
|
|
+
|
|
|
+ devres_add(dev, hpriv);
|
|
|
+
|
|
|
+ hpriv->mmio = devm_ioremap_resource(dev,
|
|
|
+ platform_get_resource(pdev, IORESOURCE_MEM, 0));
|
|
|
+ if (IS_ERR(hpriv->mmio)) {
|
|
|
+ dev_err(dev, "no mmio space\n");
|
|
|
+ rc = PTR_ERR(hpriv->mmio);
|
|
|
+ goto err_out;
|
|
|
+ }
|
|
|
+
|
|
|
+ hpriv->target_pwr = devm_regulator_get_optional(dev, "target");
|
|
|
+ if (IS_ERR(hpriv->target_pwr)) {
|
|
|
+ rc = PTR_ERR(hpriv->target_pwr);
|
|
|
+ if (rc == -EPROBE_DEFER)
|
|
|
+ goto err_out;
|
|
|
+ hpriv->target_pwr = NULL;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (i = 0; i < AHCI_MAX_CLKS; i++) {
|
|
|
+ /*
|
|
|
+ * For now we must use clk_get(dev, NULL) for the first clock,
|
|
|
+ * because some platforms (da850, spear13xx) are not yet
|
|
|
+ * converted to use devicetree for clocks. For new platforms
|
|
|
+ * this is equivalent to of_clk_get(dev->of_node, 0).
|
|
|
+ */
|
|
|
+ if (i == 0)
|
|
|
+ clk = clk_get(dev, NULL);
|
|
|
+ else
|
|
|
+ clk = of_clk_get(dev->of_node, i);
|
|
|
+
|
|
|
+ if (IS_ERR(clk)) {
|
|
|
+ rc = PTR_ERR(clk);
|
|
|
+ if (rc == -EPROBE_DEFER)
|
|
|
+ goto err_out;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ hpriv->clks[i] = clk;
|
|
|
+ }
|
|
|
+
|
|
|
+ hpriv->phy = devm_phy_get(dev, "sata-phy");
|
|
|
+ if (IS_ERR(hpriv->phy)) {
|
|
|
+ rc = PTR_ERR(hpriv->phy);
|
|
|
+ switch (rc) {
|
|
|
+ case -ENODEV:
|
|
|
+ case -ENOSYS:
|
|
|
+ /* continue normally */
|
|
|
+ hpriv->phy = NULL;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case -EPROBE_DEFER:
|
|
|
+ goto err_out;
|
|
|
+
|
|
|
+ default:
|
|
|
+ dev_err(dev, "couldn't get sata-phy\n");
|
|
|
+ goto err_out;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ pm_runtime_enable(dev);
|
|
|
+ pm_runtime_get_sync(dev);
|
|
|
+ hpriv->got_runtime_pm = true;
|
|
|
+
|
|
|
+ devres_remove_group(dev, NULL);
|
|
|
+ return hpriv;
|
|
|
+
|
|
|
+err_out:
|
|
|
+ devres_release_group(dev, NULL);
|
|
|
+ return ERR_PTR(rc);
|
|
|
+}
|
|
|
+EXPORT_SYMBOL_GPL(ahci_platform_get_resources);
|
|
|
+
|
|
|
+/**
|
|
|
+ * ahci_platform_init_host - Bring up an ahci-platform host
|
|
|
+ * @pdev: platform device pointer for the host
|
|
|
+ * @hpriv: ahci-host private data for the host
|
|
|
+ * @pi_template: template for the ata_port_info to use
|
|
|
+ * @force_port_map: param passed to ahci_save_initial_config
|
|
|
+ * @mask_port_map: param passed to ahci_save_initial_config
|
|
|
+ *
|
|
|
+ * This function does all the usual steps needed to bring up an
|
|
|
+ * ahci-platform host, note any necessary resources (ie clks, phy, etc.)
|
|
|
+ * must be initialized / enabled before calling this.
|
|
|
+ *
|
|
|
+ * RETURNS:
|
|
|
+ * 0 on success otherwise a negative error code
|
|
|
+ */
|
|
|
+int ahci_platform_init_host(struct platform_device *pdev,
|
|
|
+ struct ahci_host_priv *hpriv,
|
|
|
+ const struct ata_port_info *pi_template,
|
|
|
+ unsigned int force_port_map,
|
|
|
+ unsigned int mask_port_map)
|
|
|
+{
|
|
|
+ struct device *dev = &pdev->dev;
|
|
|
+ struct ata_port_info pi = *pi_template;
|
|
|
+ const struct ata_port_info *ppi[] = { &pi, NULL };
|
|
|
+ struct ata_host *host;
|
|
|
+ int i, irq, n_ports, rc;
|
|
|
+
|
|
|
+ irq = platform_get_irq(pdev, 0);
|
|
|
+ if (irq <= 0) {
|
|
|
+ dev_err(dev, "no irq\n");
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* prepare host */
|
|
|
+ hpriv->flags |= (unsigned long)pi.private_data;
|
|
|
+
|
|
|
+ ahci_save_initial_config(dev, hpriv, force_port_map, mask_port_map);
|
|
|
+
|
|
|
+ if (hpriv->cap & HOST_CAP_NCQ)
|
|
|
+ pi.flags |= ATA_FLAG_NCQ;
|
|
|
+
|
|
|
+ if (hpriv->cap & HOST_CAP_PMP)
|
|
|
+ pi.flags |= ATA_FLAG_PMP;
|
|
|
+
|
|
|
+ ahci_set_em_messages(hpriv, &pi);
|
|
|
+
|
|
|
+ /* CAP.NP sometimes indicate the index of the last enabled
|
|
|
+ * port, at other times, that of the last possible port, so
|
|
|
+ * determining the maximum port number requires looking at
|
|
|
+ * both CAP.NP and port_map.
|
|
|
+ */
|
|
|
+ n_ports = max(ahci_nr_ports(hpriv->cap), fls(hpriv->port_map));
|
|
|
+
|
|
|
+ host = ata_host_alloc_pinfo(dev, ppi, n_ports);
|
|
|
+ if (!host)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ host->private_data = hpriv;
|
|
|
+
|
|
|
+ if (!(hpriv->cap & HOST_CAP_SSS) || ahci_ignore_sss)
|
|
|
+ host->flags |= ATA_HOST_PARALLEL_SCAN;
|
|
|
+ else
|
|
|
+ dev_info(dev, "SSS flag set, parallel bus scan disabled\n");
|
|
|
+
|
|
|
+ if (pi.flags & ATA_FLAG_EM)
|
|
|
+ ahci_reset_em(host);
|
|
|
+
|
|
|
+ for (i = 0; i < host->n_ports; i++) {
|
|
|
+ struct ata_port *ap = host->ports[i];
|
|
|
+
|
|
|
+ ata_port_desc(ap, "mmio %pR",
|
|
|
+ platform_get_resource(pdev, IORESOURCE_MEM, 0));
|
|
|
+ ata_port_desc(ap, "port 0x%x", 0x100 + ap->port_no * 0x80);
|
|
|
+
|
|
|
+ /* set enclosure management message type */
|
|
|
+ if (ap->flags & ATA_FLAG_EM)
|
|
|
+ ap->em_message_type = hpriv->em_msg_type;
|
|
|
+
|
|
|
+ /* disabled/not-implemented port */
|
|
|
+ if (!(hpriv->port_map & (1 << i)))
|
|
|
+ ap->ops = &ata_dummy_port_ops;
|
|
|
+ }
|
|
|
+
|
|
|
+ rc = ahci_reset_controller(host);
|
|
|
+ if (rc)
|
|
|
+ return rc;
|
|
|
+
|
|
|
+ ahci_init_controller(host);
|
|
|
+ ahci_print_info(host, "platform");
|
|
|
+
|
|
|
+ return ata_host_activate(host, irq, ahci_interrupt, IRQF_SHARED,
|
|
|
+ &ahci_platform_sht);
|
|
|
+}
|
|
|
+EXPORT_SYMBOL_GPL(ahci_platform_init_host);
|
|
|
+
|
|
|
+static void ahci_host_stop(struct ata_host *host)
|
|
|
+{
|
|
|
+ struct device *dev = host->dev;
|
|
|
+ struct ahci_platform_data *pdata = dev_get_platdata(dev);
|
|
|
+ struct ahci_host_priv *hpriv = host->private_data;
|
|
|
+
|
|
|
+ if (pdata && pdata->exit)
|
|
|
+ pdata->exit(dev);
|
|
|
+
|
|
|
+ ahci_platform_disable_resources(hpriv);
|
|
|
+}
|
|
|
+
|
|
|
+#ifdef CONFIG_PM_SLEEP
|
|
|
+/**
|
|
|
+ * ahci_platform_suspend_host - Suspend an ahci-platform host
|
|
|
+ * @dev: device pointer for the host
|
|
|
+ *
|
|
|
+ * This function does all the usual steps needed to suspend an
|
|
|
+ * ahci-platform host, note any necessary resources (ie clks, phy, etc.)
|
|
|
+ * must be disabled after calling this.
|
|
|
+ *
|
|
|
+ * RETURNS:
|
|
|
+ * 0 on success otherwise a negative error code
|
|
|
+ */
|
|
|
+int ahci_platform_suspend_host(struct device *dev)
|
|
|
+{
|
|
|
+ struct ata_host *host = dev_get_drvdata(dev);
|
|
|
+ struct ahci_host_priv *hpriv = host->private_data;
|
|
|
+ void __iomem *mmio = hpriv->mmio;
|
|
|
+ u32 ctl;
|
|
|
+
|
|
|
+ if (hpriv->flags & AHCI_HFLAG_NO_SUSPEND) {
|
|
|
+ dev_err(dev, "firmware update required for suspend/resume\n");
|
|
|
+ return -EIO;
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * AHCI spec rev1.1 section 8.3.3:
|
|
|
+ * Software must disable interrupts prior to requesting a
|
|
|
+ * transition of the HBA to D3 state.
|
|
|
+ */
|
|
|
+ ctl = readl(mmio + HOST_CTL);
|
|
|
+ ctl &= ~HOST_IRQ_EN;
|
|
|
+ writel(ctl, mmio + HOST_CTL);
|
|
|
+ readl(mmio + HOST_CTL); /* flush */
|
|
|
+
|
|
|
+ return ata_host_suspend(host, PMSG_SUSPEND);
|
|
|
+}
|
|
|
+EXPORT_SYMBOL_GPL(ahci_platform_suspend_host);
|
|
|
+
|
|
|
+/**
|
|
|
+ * ahci_platform_resume_host - Resume an ahci-platform host
|
|
|
+ * @dev: device pointer for the host
|
|
|
+ *
|
|
|
+ * This function does all the usual steps needed to resume an ahci-platform
|
|
|
+ * host, note any necessary resources (ie clks, phy, etc.) must be
|
|
|
+ * initialized / enabled before calling this.
|
|
|
+ *
|
|
|
+ * RETURNS:
|
|
|
+ * 0 on success otherwise a negative error code
|
|
|
+ */
|
|
|
+int ahci_platform_resume_host(struct device *dev)
|
|
|
+{
|
|
|
+ struct ata_host *host = dev_get_drvdata(dev);
|
|
|
+ int rc;
|
|
|
+
|
|
|
+ if (dev->power.power_state.event == PM_EVENT_SUSPEND) {
|
|
|
+ rc = ahci_reset_controller(host);
|
|
|
+ if (rc)
|
|
|
+ return rc;
|
|
|
+
|
|
|
+ ahci_init_controller(host);
|
|
|
+ }
|
|
|
+
|
|
|
+ ata_host_resume(host);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+EXPORT_SYMBOL_GPL(ahci_platform_resume_host);
|
|
|
+
|
|
|
+/**
|
|
|
+ * ahci_platform_suspend - Suspend an ahci-platform device
|
|
|
+ * @dev: the platform device to suspend
|
|
|
+ *
|
|
|
+ * This function suspends the host associated with the device, followed by
|
|
|
+ * disabling all the resources of the device.
|
|
|
+ *
|
|
|
+ * RETURNS:
|
|
|
+ * 0 on success otherwise a negative error code
|
|
|
+ */
|
|
|
+int ahci_platform_suspend(struct device *dev)
|
|
|
+{
|
|
|
+ struct ahci_platform_data *pdata = dev_get_platdata(dev);
|
|
|
+ struct ata_host *host = dev_get_drvdata(dev);
|
|
|
+ struct ahci_host_priv *hpriv = host->private_data;
|
|
|
+ int rc;
|
|
|
+
|
|
|
+ rc = ahci_platform_suspend_host(dev);
|
|
|
+ if (rc)
|
|
|
+ return rc;
|
|
|
+
|
|
|
+ if (pdata && pdata->suspend) {
|
|
|
+ rc = pdata->suspend(dev);
|
|
|
+ if (rc)
|
|
|
+ goto resume_host;
|
|
|
+ }
|
|
|
+
|
|
|
+ ahci_platform_disable_resources(hpriv);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+resume_host:
|
|
|
+ ahci_platform_resume_host(dev);
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+EXPORT_SYMBOL_GPL(ahci_platform_suspend);
|
|
|
+
|
|
|
+/**
|
|
|
+ * ahci_platform_resume - Resume an ahci-platform device
|
|
|
+ * @dev: the platform device to resume
|
|
|
+ *
|
|
|
+ * This function enables all the resources of the device followed by
|
|
|
+ * resuming the host associated with the device.
|
|
|
+ *
|
|
|
+ * RETURNS:
|
|
|
+ * 0 on success otherwise a negative error code
|
|
|
+ */
|
|
|
+int ahci_platform_resume(struct device *dev)
|
|
|
+{
|
|
|
+ struct ahci_platform_data *pdata = dev_get_platdata(dev);
|
|
|
+ struct ata_host *host = dev_get_drvdata(dev);
|
|
|
+ struct ahci_host_priv *hpriv = host->private_data;
|
|
|
+ int rc;
|
|
|
+
|
|
|
+ rc = ahci_platform_enable_resources(hpriv);
|
|
|
+ if (rc)
|
|
|
+ return rc;
|
|
|
+
|
|
|
+ if (pdata && pdata->resume) {
|
|
|
+ rc = pdata->resume(dev);
|
|
|
+ if (rc)
|
|
|
+ goto disable_resources;
|
|
|
+ }
|
|
|
+
|
|
|
+ rc = ahci_platform_resume_host(dev);
|
|
|
+ if (rc)
|
|
|
+ goto disable_resources;
|
|
|
+
|
|
|
+ /* We resumed so update PM runtime state */
|
|
|
+ pm_runtime_disable(dev);
|
|
|
+ pm_runtime_set_active(dev);
|
|
|
+ pm_runtime_enable(dev);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+disable_resources:
|
|
|
+ ahci_platform_disable_resources(hpriv);
|
|
|
+
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+EXPORT_SYMBOL_GPL(ahci_platform_resume);
|
|
|
+#endif
|
|
|
+
|
|
|
+MODULE_DESCRIPTION("AHCI SATA platform library");
|
|
|
+MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
|
|
|
+MODULE_LICENSE("GPL");
|
Bartlomiej Zolnierkiewicz