MSM: Add USB support for MSM7x30

Add USB OTG, peripheral and host devices.  This patch also adds
usb_phy_clk which is required for resetting the PHY.  VBUS power up
and shutdown routines depends on PMIC module.  As PMIC driver is
unavailable, configure USB in peripheral only mode.

Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>

3 files changed, 95 insertions, 0 deletions

diff --git a/arch/arm/mach-msm/board-msm7x30.c b/arch/arm/mach-msm/board-msm7x30.c
index 05241df3f9b6..6f3b9735e970 100644
--- a/arch/arm/mach-msm/board-msm7x30.c
+++ b/arch/arm/mach-msm/board-msm7x30.c
@@ -22,6 +22,7 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/smsc911x.h>
+#include <linux/usb/msm_hsusb.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -39,11 +40,26 @@
 
 extern struct sys_timer msm_timer;
 
+static int hsusb_phy_init_seq[] = {
+        0x30, 0x32,     /* Enable and set Pre-Emphasis Depth to 20% */
+        0x02, 0x36,     /* Disable CDR Auto Reset feature */
+        -1
+};
+
+static struct msm_otg_platform_data msm_otg_pdata = {
+        .phy_init_seq           = hsusb_phy_init_seq,
+        .mode                   = USB_PERIPHERAL,
+        .otg_control            = OTG_PHY_CONTROL,
+};
+
 static struct platform_device *devices[] __initdata = {
 #if defined(CONFIG_SERIAL_MSM) || defined(CONFIG_MSM_SERIAL_DEBUGGER)
         &msm_device_uart2,
 #endif
         &msm_device_smd,
+        &msm_device_otg,
+        &msm_device_hsusb,
+        &msm_device_hsusb_host,
 };
 
 static void __init msm7x30_init_irq(void)
@@ -53,6 +69,10 @@ static void __init msm7x30_init_irq(void)
 
 static void __init msm7x30_init(void)
 {
+        msm_device_otg.dev.platform_data = &msm_otg_pdata;
+        msm_device_hsusb.dev.parent = &msm_device_otg.dev;
+        msm_device_hsusb_host.dev.parent = &msm_device_otg.dev;
+
         platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
diff --git a/arch/arm/mach-msm/devices-msm7x30.c b/arch/arm/mach-msm/devices-msm7x30.c
index 7fcf2e3b7698..4e9a0ab3e937 100644
--- a/arch/arm/mach-msm/devices-msm7x30.c
+++ b/arch/arm/mach-msm/devices-msm7x30.c
@@ -56,6 +56,77 @@ struct platform_device msm_device_smd = {
         .id     = -1,
 };
 
+static struct resource resources_otg[] = {
+        {
+                .start  = MSM_HSUSB_PHYS,
+                .end    = MSM_HSUSB_PHYS + MSM_HSUSB_SIZE,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = INT_USB_HS,
+                .end    = INT_USB_HS,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device msm_device_otg = {
+        .name           = "msm_otg",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(resources_otg),
+        .resource       = resources_otg,
+        .dev            = {
+                .coherent_dma_mask      = 0xffffffff,
+        },
+};
+
+static struct resource resources_hsusb[] = {
+        {
+                .start  = MSM_HSUSB_PHYS,
+                .end    = MSM_HSUSB_PHYS + MSM_HSUSB_SIZE,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = INT_USB_HS,
+                .end    = INT_USB_HS,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device msm_device_hsusb = {
+        .name           = "msm_hsusb",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(resources_hsusb),
+        .resource       = resources_hsusb,
+        .dev            = {
+                .coherent_dma_mask      = 0xffffffff,
+        },
+};
+
+static u64 dma_mask = 0xffffffffULL;
+static struct resource resources_hsusb_host[] = {
+        {
+                .start  = MSM_HSUSB_PHYS,
+                .end    = MSM_HSUSB_PHYS + MSM_HSUSB_SIZE,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = INT_USB_HS,
+                .end    = INT_USB_HS,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device msm_device_hsusb_host = {
+        .name           = "msm_hsusb_host",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(resources_hsusb_host),
+        .resource       = resources_hsusb_host,
+        .dev            = {
+                .dma_mask               = &dma_mask,
+                .coherent_dma_mask      = 0xffffffffULL,
+        },
+};
+
 struct clk msm_clocks_7x30[] = {
         CLK_PCOM("adm_clk",     ADM_CLK,        NULL, 0),
         CLK_PCOM("adsp_clk",    ADSP_CLK,       NULL, 0),
@@ -107,6 +178,7 @@ struct clk msm_clocks_7x30[] = {
         CLK_PCOM("tv_dac_clk",  TV_DAC_CLK,     NULL, 0),
         CLK_PCOM("tv_enc_clk",  TV_ENC_CLK,     NULL, 0),
         CLK_PCOM("uart_clk",    UART2_CLK,      &msm_device_uart2.dev, 0),
+        CLK_PCOM("usb_phy_clk", USB_PHY_CLK,    NULL, 0),
         CLK_PCOM("usb_hs_clk",          USB_HS_CLK,             NULL, OFF),
         CLK_PCOM("usb_hs_pclk",         USB_HS_P_CLK,           NULL, OFF),
         CLK_PCOM("usb_hs_core_clk",     USB_HS_CORE_CLK,        NULL, OFF),
diff --git a/arch/arm/mach-msm/include/mach/msm_iomap-7x30.h b/arch/arm/mach-msm/include/mach/msm_iomap-7x30.h
index 8a00c2defbc1..0fd7b68ca114 100644
--- a/arch/arm/mach-msm/include/mach/msm_iomap-7x30.h
+++ b/arch/arm/mach-msm/include/mach/msm_iomap-7x30.h
@@ -119,4 +119,7 @@
 #define MSM_AD5_PHYS          0xA7000000
 #define MSM_AD5_SIZE          (SZ_1M*13)
 
+#define MSM_HSUSB_PHYS        0xA3600000
+#define MSM_HSUSB_SIZE        SZ_1K
+
 #endif