initial_commit

1 files changed, 180 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/usb.c b/arch/arm/mach-davinci/usb.c
new file mode 100644
index 00000000..23d2b6d9
--- /dev/null
+++ b/arch/arm/mach-davinci/usb.c
@@ -0,0 +1,180 @@
+/*
+ * USB
+ */
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+
+#include <linux/usb/musb.h>
+
+#include <mach/common.h>
+#include <mach/irqs.h>
+#include <mach/cputype.h>
+#include <mach/usb.h>
+
+#define DAVINCI_USB_OTG_BASE	0x01c64000
+
+#define DA8XX_USB0_BASE 	0x01e00000
+#define DA8XX_USB1_BASE 	0x01e25000
+
+#if defined(CONFIG_USB_MUSB_HDRC) || defined(CONFIG_USB_MUSB_HDRC_MODULE)
+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 = {
+#if defined(CONFIG_USB_MUSB_OTG)
+	/* OTG requires a Mini-AB connector */
+	.mode           = MUSB_OTG,
+#elif defined(CONFIG_USB_MUSB_PERIPHERAL)
+	.mode           = MUSB_PERIPHERAL,
+#elif defined(CONFIG_USB_MUSB_HOST)
+	.mode           = MUSB_HOST,
+#endif
+	.clock		= "usb",
+	.config		= &musb_config,
+};
+
+static struct resource usb_resources[] = {
+	{
+		/* physical address */
+		.start          = DAVINCI_USB_OTG_BASE,
+		.end            = DAVINCI_USB_OTG_BASE + 0x5ff,
+		.flags          = IORESOURCE_MEM,
+	},
+	{
+		.start          = IRQ_USBINT,
+		.flags          = IORESOURCE_IRQ,
+		.name		= "mc"
+	},
+	{
+		/* placeholder for the dedicated CPPI IRQ */
+		.flags          = IORESOURCE_IRQ,
+		.name		= "dma"
+	},
+};
+
+static u64 usb_dmamask = DMA_BIT_MASK(32);
+
+static struct platform_device usb_dev = {
+	.name           = "musb-davinci",
+	.id             = -1,
+	.dev = {
+		.platform_data		= &usb_data,
+		.dma_mask		= &usb_dmamask,
+		.coherent_dma_mask      = DMA_BIT_MASK(32),
+	},
+	.resource       = usb_resources,
+	.num_resources  = ARRAY_SIZE(usb_resources),
+};
+
+void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
+{
+	usb_data.power = mA > 510 ? 255 : mA / 2;
+	usb_data.potpgt = (potpgt_ms + 1) / 2;
+
+	if (cpu_is_davinci_dm646x()) {
+		/* Override the defaults as DM6467 uses different IRQs. */
+		usb_dev.resource[1].start = IRQ_DM646X_USBINT;
+		usb_dev.resource[2].start = IRQ_DM646X_USBDMAINT;
+	} else	/* other devices don't have dedicated CPPI IRQ */
+		usb_dev.num_resources = 2;
+
+	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 */