MSM: Add USB suport for QSD8x50

OTG driver takes care of putting hardware into low power mode.  Hence
make peripheral and host devices as children of OTG device and let
runtime PM takes care of notifying peripheral and host state to
OTG device.  VBUS power up and shutdown routines are implemented by
modem processor.  As RPC infrastructure is not available, configure
USB in peripheral only mode.

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

diff --git a/arch/arm/mach-msm/board-qsd8x50.c b/arch/arm/mach-msm/board-qsd8x50.c
index ed2af4ad97ed22db1d0829da48e2770796bcb966..2e8391307f55542fe75dccdb618c444a67df4d8b 100644 (file)
--- a/arch/arm/mach-msm/board-qsd8x50.c
+++ b/arch/arm/mach-msm/board-qsd8x50.c
@@ -20,6 +20,7 @@
 #include <linux/gpio.h>
 #include <linux/platform_device.h>
 #include <linux/delay.h>
+#include <linux/usb/msm_hsusb.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -74,9 +75,24 @@ static int __init msm_init_smc91x(void)
 }
 module_init(msm_init_smc91x);
 
+static int hsusb_phy_init_seq[] = {
+       0x08, 0x31,     /* Increase HS Driver Amplitude */
+       0x20, 0x32,     /* Enable and set Pre-Emphasis Depth to 10% */
+       -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 = {
        &msm_device_uart3,
        &msm_device_smd,
+       &msm_device_otg,
+       &msm_device_hsusb,
+       &msm_device_hsusb_host,
 };
 
 static void __init qsd8x50_map_io(void)
@@ -93,6 +109,9 @@ static void __init qsd8x50_init_irq(void)
 
 static void __init qsd8x50_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-qsd8x50.c b/arch/arm/mach-msm/devices-qsd8x50.c
index 6fe67c5d1ae0aa3e7286f659b67acb8d11dd12fb..a4b798f20ccb777f708b20e9dd43a72fe11ea4fc 100644 (file)
--- a/arch/arm/mach-msm/devices-qsd8x50.c
+++ b/arch/arm/mach-msm/devices-qsd8x50.c
@@ -53,6 +53,77 @@ 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_8x50[] = {
        CLK_PCOM("adm_clk",     ADM_CLK,        NULL, 0),
        CLK_PCOM("ebi1_clk",    EBI1_CLK,       NULL, CLK_MIN),

diff --git a/arch/arm/mach-msm/devices.h b/arch/arm/mach-msm/devices.h
index 68b8075f8ca42a08b63d6fce3b4a816f3daea244..87c70bfce2bde698fccddb06d29be7381ae46e34 100644 (file)
--- a/arch/arm/mach-msm/devices.h
+++ b/arch/arm/mach-msm/devices.h
@@ -28,6 +28,8 @@ extern struct platform_device msm_device_sdc3;
 extern struct platform_device msm_device_sdc4;
 
 extern struct platform_device msm_device_hsusb;
+extern struct platform_device msm_device_otg;
+extern struct platform_device msm_device_hsusb_host;
 
 extern struct platform_device msm_device_i2c;