Merge remote-tracking branches 'spi/topic/sh-msiof', 'spi/topic/stm32', 'spi/topic/sunxi', 'spi/topic/tegra' and 'spi/topic/tools' into spi-next

Documentation/devicetree/bindings/spi/sh-msiof.txt

@@ -6,6 +6,7 @@ Required properties:
 			 "renesas,msiof-r8a7792" (R-Car V2H)
 			 "renesas,msiof-r8a7793" (R-Car M2-N)
 			 "renesas,msiof-r8a7794" (R-Car E2)
+			 "renesas,msiof-r8a7795" (R-Car H3)
 			 "renesas,msiof-r8a7796" (R-Car M3-W)
 			 "renesas,msiof-sh73a0" (SH-Mobile AG5)
 			 "renesas,sh-mobile-msiof" (generic SH-Mobile compatibile device)

drivers/spi/spi-sh-msiof.c

@@ -38,6 +38,7 @@ struct sh_msiof_chipdata {
 	u16 tx_fifo_size;
 	u16 rx_fifo_size;
 	u16 master_flags;
+	u16 min_div;
 };
 
 struct sh_msiof_spi_priv {
@@ -49,6 +50,7 @@ struct sh_msiof_spi_priv {
 	struct completion done;
 	unsigned int tx_fifo_size;
 	unsigned int rx_fifo_size;
+	unsigned int min_div;
 	void *tx_dma_page;
 	void *rx_dma_page;
 	dma_addr_t tx_dma_addr;
@@ -261,6 +263,8 @@ static void sh_msiof_spi_set_clk_regs(struct sh_msiof_spi_priv *p,
 	if (!WARN_ON(!spi_hz || !parent_rate))
 		div = DIV_ROUND_UP(parent_rate, spi_hz);
 
+	div = max_t(unsigned long, div, p->min_div);
+
 	for (k = 0; k < ARRAY_SIZE(sh_msiof_spi_div_table); k++) {
 		brps = DIV_ROUND_UP(div, sh_msiof_spi_div_table[k].div);
 		/* SCR_BRDV_DIV_1 is valid only if BRPS is x 1/1 or x 1/2 */
@@ -998,24 +1002,33 @@ static const struct sh_msiof_chipdata sh_data = {
 	.tx_fifo_size = 64,
 	.rx_fifo_size = 64,
 	.master_flags = 0,
+	.min_div = 1,
+};
+
+static const struct sh_msiof_chipdata rcar_gen2_data = {
+	.tx_fifo_size = 64,
+	.rx_fifo_size = 64,
+	.master_flags = SPI_MASTER_MUST_TX,
+	.min_div = 1,
 };
 
-static const struct sh_msiof_chipdata r8a779x_data = {
+static const struct sh_msiof_chipdata rcar_gen3_data = {
 	.tx_fifo_size = 64,
 	.rx_fifo_size = 64,
 	.master_flags = SPI_MASTER_MUST_TX,
+	.min_div = 2,
 };
 
 static const struct of_device_id sh_msiof_match[] = {
 	{ .compatible = "renesas,sh-mobile-msiof", .data = &sh_data },
-	{ .compatible = "renesas,msiof-r8a7790",   .data = &r8a779x_data },
-	{ .compatible = "renesas,msiof-r8a7791",   .data = &r8a779x_data },
-	{ .compatible = "renesas,msiof-r8a7792",   .data = &r8a779x_data },
-	{ .compatible = "renesas,msiof-r8a7793",   .data = &r8a779x_data },
-	{ .compatible = "renesas,msiof-r8a7794",   .data = &r8a779x_data },
-	{ .compatible = "renesas,rcar-gen2-msiof", .data = &r8a779x_data },
-	{ .compatible = "renesas,msiof-r8a7796",   .data = &r8a779x_data },
-	{ .compatible = "renesas,rcar-gen3-msiof", .data = &r8a779x_data },
+	{ .compatible = "renesas,msiof-r8a7790",   .data = &rcar_gen2_data },
+	{ .compatible = "renesas,msiof-r8a7791",   .data = &rcar_gen2_data },
+	{ .compatible = "renesas,msiof-r8a7792",   .data = &rcar_gen2_data },
+	{ .compatible = "renesas,msiof-r8a7793",   .data = &rcar_gen2_data },
+	{ .compatible = "renesas,msiof-r8a7794",   .data = &rcar_gen2_data },
+	{ .compatible = "renesas,rcar-gen2-msiof", .data = &rcar_gen2_data },
+	{ .compatible = "renesas,msiof-r8a7796",   .data = &rcar_gen3_data },
+	{ .compatible = "renesas,rcar-gen3-msiof", .data = &rcar_gen3_data },
 	{ .compatible = "renesas,sh-msiof",        .data = &sh_data }, /* Deprecated */
 	{},
 };
@@ -1230,6 +1243,7 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, p);
 	p->master = master;
 	p->info = info;
+	p->min_div = chipdata->min_div;
 
 	init_completion(&p->done);
 

drivers/spi/spi-stm32.c

@@ -1132,7 +1132,7 @@ static int stm32_spi_probe(struct platform_device *pdev)
 		goto err_master_put;
 	}
 
-	spi->rst = devm_reset_control_get(&pdev->dev, NULL);
+	spi->rst = devm_reset_control_get_exclusive(&pdev->dev, NULL);
 	if (!IS_ERR(spi->rst)) {
 		reset_control_assert(spi->rst);
 		udelay(2);

drivers/spi/spi-sun6i.c

@@ -502,7 +502,7 @@ static int sun6i_spi_probe(struct platform_device *pdev)
 
 	init_completion(&sspi->done);
 
-	sspi->rstc = devm_reset_control_get(&pdev->dev, NULL);
+	sspi->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
 	if (IS_ERR(sspi->rstc)) {
 		dev_err(&pdev->dev, "Couldn't get reset controller\n");
 		ret = PTR_ERR(sspi->rstc);

drivers/spi/spi-tegra114.c

@@ -1083,7 +1083,7 @@ static int tegra_spi_probe(struct platform_device *pdev)
 		goto exit_free_irq;
 	}
 
-	tspi->rst = devm_reset_control_get(&pdev->dev, "spi");
+	tspi->rst = devm_reset_control_get_exclusive(&pdev->dev, "spi");
 	if (IS_ERR(tspi->rst)) {
 		dev_err(&pdev->dev, "can not get reset\n");
 		ret = PTR_ERR(tspi->rst);

drivers/spi/spi-tegra20-sflash.c

@@ -485,7 +485,7 @@ static int tegra_sflash_probe(struct platform_device *pdev)
 		goto exit_free_irq;
 	}
 
-	tsd->rst = devm_reset_control_get(&pdev->dev, "spi");
+	tsd->rst = devm_reset_control_get_exclusive(&pdev->dev, "spi");
 	if (IS_ERR(tsd->rst)) {
 		dev_err(&pdev->dev, "can not get reset\n");
 		ret = PTR_ERR(tsd->rst);

drivers/spi/spi-tegra20-slink.c

@@ -1081,7 +1081,7 @@ static int tegra_slink_probe(struct platform_device *pdev)
 		goto exit_free_irq;
 	}
 
-	tspi->rst = devm_reset_control_get(&pdev->dev, "spi");
+	tspi->rst = devm_reset_control_get_exclusive(&pdev->dev, "spi");
 	if (IS_ERR(tspi->rst)) {
 		dev_err(&pdev->dev, "can not get reset\n");
 		ret = PTR_ERR(tspi->rst);

tools/Makefile

@@ -91,7 +91,7 @@ kvm_stat: FORCE
 	$(call descend,kvm/$@)
 
 all: acpi cgroup cpupower gpio hv firewire lguest liblockdep \
-		perf selftests turbostat usb \
+		perf selftests spi turbostat usb \
 		virtio vm net x86_energy_perf_policy \
 		tmon freefall objtool kvm_stat
 
@@ -101,7 +101,7 @@ acpi_install:
 cpupower_install:
 	$(call descend,power/$(@:_install=),install)
 
-cgroup_install firewire_install gpio_install hv_install lguest_install perf_install usb_install virtio_install vm_install net_install objtool_install:
+cgroup_install firewire_install gpio_install hv_install lguest_install perf_install spi_install usb_install virtio_install vm_install net_install objtool_install:
 	$(call descend,$(@:_install=),install)
 
 liblockdep_install:

tools/spi/Build

@@ -0,0 +1,2 @@
+spidev_test-y += spidev_test.o
+spidev_fdx-y += spidev_fdx.o

tools/spi/Makefile

@@ -1,6 +1,66 @@
+include ../scripts/Makefile.include
+
+bindir ?= /usr/bin
+
+ifeq ($(srctree),)
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+endif
+
+# Do not use make's built-in rules
+# (this improves performance and avoids hard-to-debug behaviour);
+MAKEFLAGS += -r
+
 CC = $(CROSS_COMPILE)gcc
+LD = $(CROSS_COMPILE)ld
+CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
+
+ALL_TARGETS := spidev_test spidev_fdx
+ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
+
+all: $(ALL_PROGRAMS)
+
+export srctree OUTPUT CC LD CFLAGS
+include $(srctree)/tools/build/Makefile.include
 
-all: spidev_test spidev_fdx
+#
+# We need the following to be outside of kernel tree
+#
+$(OUTPUT)include/linux/spi/spidev.h: ../../include/uapi/linux/spi/spidev.h
+	mkdir -p $(OUTPUT)include/linux/spi 2>&1 || true
+	ln -sf $(CURDIR)/../../include/uapi/linux/spi/spidev.h $@
+
+prepare: $(OUTPUT)include/linux/spi/spidev.h
+
+#
+# spidev_test
+#
+SPIDEV_TEST_IN := $(OUTPUT)spidev_test-in.o
+$(SPIDEV_TEST_IN): prepare FORCE
+	$(Q)$(MAKE) $(build)=spidev_test
+$(OUTPUT)spidev_test: $(SPIDEV_TEST_IN)
+	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
+
+#
+# spidev_fdx
+#
+SPIDEV_FDX_IN := $(OUTPUT)spidev_fdx-in.o
+$(SPIDEV_FDX_IN): prepare FORCE
+	$(Q)$(MAKE) $(build)=spidev_fdx
+$(OUTPUT)spidev_fdx: $(SPIDEV_FDX_IN)
+	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
 
 clean:
-	$(RM) spidev_test spidev_fdx
+	rm -f $(ALL_PROGRAMS)
+	rm -f $(OUTPUT)include/linux/spi/spidev.h
+	find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete
+
+install: $(ALL_PROGRAMS)
+	install -d -m 755 $(DESTDIR)$(bindir);		\
+	for program in $(ALL_PROGRAMS); do		\
+		install $$program $(DESTDIR)$(bindir);	\
+	done
+
+FORCE:
+
+.PHONY: all install clean FORCE prepare