Merge tag 'davinci-for-v4.7/soc' of git://git.kernel.org/pub/scm/linu…

…x/kernel/git/nsekhar/linux-davinci into next/soc Merge "DaVinci SoC updates for v4.7" from Sekhar Nori: These are preparatory patches to support a USB PHY driver for USB on DA850 SoC. This should eventually lead to USB working again on this device. * tag 'davinci-for-v4.7/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: ARM: davinci: clk: add set_parent callback for mux clocks ARM: davinci: da8xx: move usb code to new file ARM: davinci: use IRQCHIP_DECLARE for cp_intc ARM: davinci: remove unused DA8XX_NUM_UARTS ARM: davinci: simplify call to of populate ARM: DaVinci USB: removed deprecated properties from MUSB config
mariux64 · Apr 25, 2016 · 7d912ba · 7d912ba
2 parents c323061 + 8a9d088
commit 7d912ba
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Showing 7 changed files with 132 additions and 108 deletions.
diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile
@@ -14,8 +14,8 @@ obj-$(CONFIG_ARCH_DAVINCI_DM644x)       += dm644x.o devices.o
 obj-$(CONFIG_ARCH_DAVINCI_DM355)        += dm355.o devices.o
 obj-$(CONFIG_ARCH_DAVINCI_DM646x)       += dm646x.o devices.o
 obj-$(CONFIG_ARCH_DAVINCI_DM365)	+= dm365.o devices.o
-obj-$(CONFIG_ARCH_DAVINCI_DA830)        += da830.o devices-da8xx.o
-obj-$(CONFIG_ARCH_DAVINCI_DA850)        += da850.o devices-da8xx.o
+obj-$(CONFIG_ARCH_DAVINCI_DA830)	+= da830.o devices-da8xx.o usb-da8xx.o
+obj-$(CONFIG_ARCH_DAVINCI_DA850)	+= da850.o devices-da8xx.o usb-da8xx.o
 
 obj-$(CONFIG_AINTC)			+= irq.o
 obj-$(CONFIG_CP_INTC)			+= cp_intc.o

diff --git a/arch/arm/mach-davinci/clock.c b/arch/arm/mach-davinci/clock.c
@@ -195,6 +195,14 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
 		return -EINVAL;
 
 	mutex_lock(&clocks_mutex);
+	if (clk->set_parent) {
+		int ret = clk->set_parent(clk, parent);
+
+		if (ret) {
+			mutex_unlock(&clocks_mutex);
+			return ret;
+		}
+	}
 	clk->parent = parent;
 	list_del_init(&clk->childnode);
 	list_add(&clk->childnode, &clk->parent->children);
@@ -224,8 +232,17 @@ int clk_register(struct clk *clk)
 
 	mutex_lock(&clocks_mutex);
 	list_add_tail(&clk->node, &clocks);
-	if (clk->parent)
+	if (clk->parent) {
+		if (clk->set_parent) {
+			int ret = clk->set_parent(clk, clk->parent);
+
+			if (ret) {
+				mutex_unlock(&clocks_mutex);
+				return ret;
+			}
+		}
 		list_add_tail(&clk->childnode, &clk->parent->children);
+	}
 	mutex_unlock(&clocks_mutex);
 
 	/* If rate is already set, use it */

diff --git a/arch/arm/mach-davinci/clock.h b/arch/arm/mach-davinci/clock.h
@@ -106,6 +106,7 @@ struct clk {
 	int (*reset) (struct clk *clk, bool reset);
 	void (*clk_enable) (struct clk *clk);
 	void (*clk_disable) (struct clk *clk);
+	int (*set_parent) (struct clk *clk, struct clk *parent);
 };
 
 /* Clock flags: SoC-specific flags start at BIT(16) */

diff --git a/arch/arm/mach-davinci/cp_intc.c b/arch/arm/mach-davinci/cp_intc.c
@@ -12,6 +12,7 @@
 #include <linux/export.h>
 #include <linux/init.h>
 #include <linux/irq.h>
+#include <linux/irqchip.h>
 #include <linux/irqdomain.h>
 #include <linux/io.h>
 #include <linux/of.h>
@@ -210,3 +211,5 @@ void __init cp_intc_init(void)
 {
 	cp_intc_of_init(NULL, NULL);
 }
+
+IRQCHIP_DECLARE(cp_intc, "ti,cp-intc", cp_intc_of_init);
diff --git a/arch/arm/mach-davinci/da8xx-dt.c b/arch/arm/mach-davinci/da8xx-dt.c
@@ -18,18 +18,6 @@
 #include "cp_intc.h"
 #include <mach/da8xx.h>
 
-#define DA8XX_NUM_UARTS	3
-
-static const struct of_device_id const da8xx_irq_match[] __initconst = {
-	{ .compatible = "ti,cp-intc", .data = cp_intc_of_init, },
-	{ }
-};
-
-static void __init da8xx_init_irq(void)
-{
-	of_irq_init(da8xx_irq_match);
-}
-
 static struct of_dev_auxdata da850_auxdata_lookup[] __initdata = {
 	OF_DEV_AUXDATA("ti,davinci-i2c", 0x01c22000, "i2c_davinci.1", NULL),
 	OF_DEV_AUXDATA("ti,davinci-wdt", 0x01c21000, "davinci-wdt", NULL),
@@ -54,9 +42,7 @@ static struct of_dev_auxdata da850_auxdata_lookup[] __initdata = {
 
 static void __init da850_init_machine(void)
 {
-	of_platform_populate(NULL, of_default_bus_match_table,
-			     da850_auxdata_lookup, NULL);
-
+	of_platform_default_populate(NULL, da850_auxdata_lookup, NULL);
 }
 
 static const char *const da850_boards_compat[] __initconst = {
@@ -68,7 +54,6 @@ static const char *const da850_boards_compat[] __initconst = {
 
 DT_MACHINE_START(DA850_DT, "Generic DA850/OMAP-L138/AM18x")
 	.map_io		= da850_init,
-	.init_irq	= da8xx_init_irq,
 	.init_time	= davinci_timer_init,
 	.init_machine	= da850_init_machine,
 	.dt_compat	= da850_boards_compat,

diff --git a/arch/arm/mach-davinci/usb-da8xx.c b/arch/arm/mach-davinci/usb-da8xx.c
@@ -0,0 +1,107 @@
+/*
+ * DA8xx USB
+ */
+#include <linux/dma-mapping.h>
+#include <linux/init.h>
+#include <linux/platform_data/usb-davinci.h>
+#include <linux/platform_device.h>
+#include <linux/usb/musb.h>
+
+#include <mach/common.h>
+#include <mach/cputype.h>
+#include <mach/da8xx.h>
+#include <mach/irqs.h>
+
+#define DA8XX_USB0_BASE		0x01e00000
+#define DA8XX_USB1_BASE		0x01e25000
+
+#if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
+
+static struct musb_hdrc_config musb_config = {
+	.multipoint	= true,
+	.num_eps	= 5,
+	.ram_bits	= 10,
+};
+
+static struct musb_hdrc_platform_data usb_data = {
+	/* OTG requires a Mini-AB connector */
+	.mode           = MUSB_OTG,
+	.clock		= "usb20",
+	.config		= &musb_config,
+};
+
+static struct resource da8xx_usb20_resources[] = {
+	{
+		.start		= DA8XX_USB0_BASE,
+		.end		= DA8XX_USB0_BASE + SZ_64K - 1,
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= IRQ_DA8XX_USB_INT,
+		.flags		= IORESOURCE_IRQ,
+		.name		= "mc",
+	},
+};
+
+static u64 usb_dmamask = DMA_BIT_MASK(32);
+
+static struct platform_device usb_dev = {
+	.name		= "musb-da8xx",
+	.id             = -1,
+	.dev = {
+		.platform_data		= &usb_data,
+		.dma_mask		= &usb_dmamask,
+		.coherent_dma_mask      = DMA_BIT_MASK(32),
+	},
+	.resource	= da8xx_usb20_resources,
+	.num_resources	= ARRAY_SIZE(da8xx_usb20_resources),
+};
+
+int __init da8xx_register_usb20(unsigned int mA, unsigned int potpgt)
+{
+	usb_data.power	= mA > 510 ? 255 : mA / 2;
+	usb_data.potpgt = (potpgt + 1) / 2;
+
+	return platform_device_register(&usb_dev);
+}
+
+#else
+
+int __init da8xx_register_usb20(unsigned int mA, unsigned int potpgt)
+{
+	return 0;
+}
+
+#endif  /* CONFIG_USB_MUSB_HDRC */
+
+static struct resource da8xx_usb11_resources[] = {
+	[0] = {
+		.start	= DA8XX_USB1_BASE,
+		.end	= DA8XX_USB1_BASE + SZ_4K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= IRQ_DA8XX_IRQN,
+		.end	= IRQ_DA8XX_IRQN,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static u64 da8xx_usb11_dma_mask = DMA_BIT_MASK(32);
+
+static struct platform_device da8xx_usb11_device = {
+	.name		= "ohci",
+	.id		= 0,
+	.dev = {
+		.dma_mask		= &da8xx_usb11_dma_mask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+	},
+	.num_resources	= ARRAY_SIZE(da8xx_usb11_resources),
+	.resource	= da8xx_usb11_resources,
+};
+
+int __init da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata)
+{
+	da8xx_usb11_device.dev.platform_data = pdata;
+	return platform_device_register(&da8xx_usb11_device);
+}
diff --git a/arch/arm/mach-davinci/usb.c b/arch/arm/mach-davinci/usb.c
@@ -10,36 +10,16 @@
 #include <mach/common.h>
 #include <mach/irqs.h>
 #include <mach/cputype.h>
-#include <mach/da8xx.h>
 #include <linux/platform_data/usb-davinci.h>
 
 #define DAVINCI_USB_OTG_BASE	0x01c64000
 
-#define DA8XX_USB0_BASE 	0x01e00000
-#define DA8XX_USB1_BASE 	0x01e25000
-
 #if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
-static struct musb_hdrc_eps_bits musb_eps[] = {
-	{ "ep1_tx", 8, },
-	{ "ep1_rx", 8, },
-	{ "ep2_tx", 8, },
-	{ "ep2_rx", 8, },
-	{ "ep3_tx", 5, },
-	{ "ep3_rx", 5, },
-	{ "ep4_tx", 5, },
-	{ "ep4_rx", 5, },
-};
-
 static struct musb_hdrc_config musb_config = {
 	.multipoint	= true,
-	.dyn_fifo	= true,
-	.soft_con	= true,
-	.dma		= true,
 
 	.num_eps	= 5,
-	.dma_channels	= 8,
 	.ram_bits	= 10,
-	.eps_bits	= musb_eps,
 };
 
 static struct musb_hdrc_platform_data usb_data = {
@@ -97,79 +77,10 @@ void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
 	platform_device_register(&usb_dev);
 }
 
-#ifdef CONFIG_ARCH_DAVINCI_DA8XX
-static struct resource da8xx_usb20_resources[] = {
-	{
-		.start		= DA8XX_USB0_BASE,
-		.end		= DA8XX_USB0_BASE + SZ_64K - 1,
-		.flags		= IORESOURCE_MEM,
-	},
-	{
-		.start		= IRQ_DA8XX_USB_INT,
-		.flags		= IORESOURCE_IRQ,
-		.name		= "mc",
-	},
-};
-
-int __init da8xx_register_usb20(unsigned mA, unsigned potpgt)
-{
-	usb_data.clock  = "usb20";
-	usb_data.power	= mA > 510 ? 255 : mA / 2;
-	usb_data.potpgt = (potpgt + 1) / 2;
-
-	usb_dev.resource = da8xx_usb20_resources;
-	usb_dev.num_resources = ARRAY_SIZE(da8xx_usb20_resources);
-	usb_dev.name = "musb-da8xx";
-
-	return platform_device_register(&usb_dev);
-}
-#endif	/* CONFIG_DAVINCI_DA8XX */
-
 #else
 
 void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
 {
 }
 
-#ifdef CONFIG_ARCH_DAVINCI_DA8XX
-int __init da8xx_register_usb20(unsigned mA, unsigned potpgt)
-{
-	return 0;
-}
-#endif
-
 #endif  /* CONFIG_USB_MUSB_HDRC */
-
-#ifdef	CONFIG_ARCH_DAVINCI_DA8XX
-static struct resource da8xx_usb11_resources[] = {
-	[0] = {
-		.start	= DA8XX_USB1_BASE,
-		.end	= DA8XX_USB1_BASE + SZ_4K - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-	[1] = {
-		.start	= IRQ_DA8XX_IRQN,
-		.end	= IRQ_DA8XX_IRQN,
-		.flags	= IORESOURCE_IRQ,
-	},
-};
-
-static u64 da8xx_usb11_dma_mask = DMA_BIT_MASK(32);
-
-static struct platform_device da8xx_usb11_device = {
-	.name		= "ohci",
-	.id		= 0,
-	.dev = {
-		.dma_mask		= &da8xx_usb11_dma_mask,
-		.coherent_dma_mask	= DMA_BIT_MASK(32),
-	},
-	.num_resources	= ARRAY_SIZE(da8xx_usb11_resources),
-	.resource	= da8xx_usb11_resources,
-};
-
-int __init da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata)
-{
-	da8xx_usb11_device.dev.platform_data = pdata;
-	return platform_device_register(&da8xx_usb11_device);
-}
-#endif	/* CONFIG_DAVINCI_DA8XX */