ARM: shmobile: kzm9g: enable USB function

This patch enable USB function on CN17

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

1 files changed, 150 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/board-kzm9g.c b/arch/arm/mach-shmobile/board-kzm9g.c
index a5cb11358e00..27194bc6ee3c 100644
--- a/arch/arm/mach-shmobile/board-kzm9g.c
+++ b/arch/arm/mach-shmobile/board-kzm9g.c
@@ -32,6 +32,7 @@
 #include <linux/platform_device.h>
 #include <linux/smsc911x.h>
 #include <linux/usb/r8a66597.h>
+#include <linux/usb/renesas_usbhs.h>
 #include <linux/videodev2.h>
 #include <sound/sh_fsi.h>
 #include <sound/simple_card.h>
@@ -122,6 +123,151 @@ static struct platform_device usb_host_device = {
         .resource       = usb_resources,
 };
 
+/* USB Func CN17 */
+struct usbhs_private {
+        unsigned int phy;
+        unsigned int cr2;
+        struct renesas_usbhs_platform_info info;
+};
+
+#define IRQ15                   intcs_evt2irq(0x03e0)
+#define USB_PHY_MODE            (1 << 4)
+#define USB_PHY_INT_EN          ((1 << 3) | (1 << 2))
+#define USB_PHY_ON              (1 << 1)
+#define USB_PHY_OFF             (1 << 0)
+#define USB_PHY_INT_CLR         (USB_PHY_ON | USB_PHY_OFF)
+
+#define usbhs_get_priv(pdev) \
+        container_of(renesas_usbhs_get_info(pdev), struct usbhs_private, info)
+
+static int usbhs_get_vbus(struct platform_device *pdev)
+{
+        struct usbhs_private *priv = usbhs_get_priv(pdev);
+
+        return !((1 << 7) & __raw_readw(priv->cr2));
+}
+
+static void usbhs_phy_reset(struct platform_device *pdev)
+{
+        struct usbhs_private *priv = usbhs_get_priv(pdev);
+
+        /* init phy */
+        __raw_writew(0x8a0a, priv->cr2);
+}
+
+static int usbhs_get_id(struct platform_device *pdev)
+{
+        return USBHS_GADGET;
+}
+
+static irqreturn_t usbhs_interrupt(int irq, void *data)
+{
+        struct platform_device *pdev = data;
+        struct usbhs_private *priv = usbhs_get_priv(pdev);
+
+        renesas_usbhs_call_notify_hotplug(pdev);
+
+        /* clear status */
+        __raw_writew(__raw_readw(priv->phy) | USB_PHY_INT_CLR, priv->phy);
+
+        return IRQ_HANDLED;
+}
+
+static int usbhs_hardware_init(struct platform_device *pdev)
+{
+        struct usbhs_private *priv = usbhs_get_priv(pdev);
+        int ret;
+
+        /* clear interrupt status */
+        __raw_writew(USB_PHY_MODE | USB_PHY_INT_CLR, priv->phy);
+
+        ret = request_irq(IRQ15, usbhs_interrupt, IRQF_TRIGGER_HIGH,
+                          dev_name(&pdev->dev), pdev);
+        if (ret) {
+                dev_err(&pdev->dev, "request_irq err\n");
+                return ret;
+        }
+
+        /* enable USB phy interrupt */
+        __raw_writew(USB_PHY_MODE | USB_PHY_INT_EN, priv->phy);
+
+        return 0;
+}
+
+static void usbhs_hardware_exit(struct platform_device *pdev)
+{
+        struct usbhs_private *priv = usbhs_get_priv(pdev);
+
+        /* clear interrupt status */
+        __raw_writew(USB_PHY_MODE | USB_PHY_INT_CLR, priv->phy);
+
+        free_irq(IRQ15, pdev);
+}
+
+static u32 usbhs_pipe_cfg[] = {
+        USB_ENDPOINT_XFER_CONTROL,
+        USB_ENDPOINT_XFER_ISOC,
+        USB_ENDPOINT_XFER_ISOC,
+        USB_ENDPOINT_XFER_BULK,
+        USB_ENDPOINT_XFER_BULK,
+        USB_ENDPOINT_XFER_BULK,
+        USB_ENDPOINT_XFER_INT,
+        USB_ENDPOINT_XFER_INT,
+        USB_ENDPOINT_XFER_INT,
+        USB_ENDPOINT_XFER_BULK,
+        USB_ENDPOINT_XFER_BULK,
+        USB_ENDPOINT_XFER_BULK,
+        USB_ENDPOINT_XFER_BULK,
+        USB_ENDPOINT_XFER_BULK,
+        USB_ENDPOINT_XFER_BULK,
+        USB_ENDPOINT_XFER_BULK,
+};
+
+static struct usbhs_private usbhs_private = {
+        .phy    = 0xe60781e0,           /* USBPHYINT */
+        .cr2    = 0xe605810c,           /* USBCR2 */
+        .info = {
+                .platform_callback = {
+                        .hardware_init  = usbhs_hardware_init,
+                        .hardware_exit  = usbhs_hardware_exit,
+                        .get_id         = usbhs_get_id,
+                        .phy_reset      = usbhs_phy_reset,
+                        .get_vbus       = usbhs_get_vbus,
+                },
+                .driver_param = {
+                        .buswait_bwait  = 4,
+                        .has_otg        = 1,
+                        .pipe_type      = usbhs_pipe_cfg,
+                        .pipe_size      = ARRAY_SIZE(usbhs_pipe_cfg),
+                },
+        },
+};
+
+static struct resource usbhs_resources[] = {
+        [0] = {
+                .start  = 0xE6890000,
+                .end    = 0xE68900e6 - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = gic_spi(62),
+                .end    = gic_spi(62),
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device usbhs_device = {
+        .name   = "renesas_usbhs",
+        .id     = -1,
+        .dev = {
+                .dma_mask               = NULL,
+                .coherent_dma_mask      = 0xffffffff,
+                .platform_data          = &usbhs_private.info,
+        },
+        .num_resources  = ARRAY_SIZE(usbhs_resources),
+        .resource       = usbhs_resources,
+};
+
 /* LCDC */
 static struct fb_videomode kzm_lcdc_mode = {
         .name           = "WVGA Panel",
@@ -361,6 +507,7 @@ static struct i2c_board_info i2c3_devices[] = {
 static struct platform_device *kzm_devices[] __initdata = {
         &smsc_device,
         &usb_host_device,
+        &usbhs_device,
         &lcdc_device,
         &mmc_device,
         &sdhi0_device,
@@ -512,6 +659,9 @@ static void __init kzm_init(void)
         gpio_request(GPIO_FN_FSIAISLD,  NULL);
         gpio_request(GPIO_FN_FSIAOSLD,  NULL);
 
+        /* enable USB */
+        gpio_request(GPIO_FN_VBUS_0,    NULL);
+
 #ifdef CONFIG_CACHE_L2X0
         /* Early BRESP enable, Shared attribute override enable, 64K*8way */
         l2x0_init(IOMEM(0xf0100000), 0x40460000, 0x82000fff);