ARM: mach-shmobile: Mackerel USB platform data update

This patch updates the board specific USB support
code for the sh7372 Mackerel board.

With this patch applied port CN22 is driven by the
recently added renesas_usbhs driver using the first
USB controller included in sh7372 aka USBHS0.

Hotplugging of USBHS0 unfortunately has to be
handled by software polling. The sh7372 SoC itself
obviously supports hotplug notification by IRQ but
on the Mackerel board this IRQ happens to be used
for the touch screen.

Also fix the pinmux configuration to avoid setting
up unused pins and fix minor spelling errors.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 160 insertions, 65 deletions

diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index 776f20560e72..1037bd2ffdb9 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -126,7 +126,7 @@
  * ------+--------------------+--------------------+-------
  * IRQ0  | ICR1A.IRQ0SA=0010  | SDHI2 card detect  | Low
  * IRQ6  | ICR1A.IRQ6SA=0011  | Ether(LAN9220)     | High
- * IRQ7  | ICR1A.IRQ7SA=0010  | LCD Tuch Panel     | Low
+ * IRQ7  | ICR1A.IRQ7SA=0010  | LCD Touch Panel    | Low
  * IRQ8  | ICR2A.IRQ8SA=0010  | MMC/SD card detect | Low
  * IRQ9  | ICR2A.IRQ9SA=0010  | KEY(TCA6408)       | Low
  * IRQ21 | ICR4A.IRQ21SA=0011 | Sensor(ADXL345)    | High
@@ -165,10 +165,10 @@
  * USB1 can become Host by r8a66597, and become Function by renesas_usbhs.
  * But don't select both drivers in same time.
  * These uses same IRQ number for request_irq(), and aren't supporting
- * IRQF_SHARD / IORESOURCE_IRQ_SHAREABLE.
+ * IRQF_SHARED / IORESOURCE_IRQ_SHAREABLE.
  *
  * Actually these are old/new version of USB driver.
- * This mean its register will be broken if it supports SHARD IRQ,
+ * This mean its register will be broken if it supports shared IRQ,
  */
 
 /*
@@ -562,7 +562,136 @@ out:
                 clk_put(hdmi_ick);
 }
 
-/* USB1 (Host) */
+/* USBHS0 is connected to CN22 which takes a USB Mini-B plug
+ *
+ * The sh7372 SoC has IRQ7 set aside for USBHS0 hotplug,
+ * but on this particular board IRQ7 is already used by
+ * the touch screen. This leaves us with software polling.
+ */
+#define USBHS0_POLL_INTERVAL (HZ * 5)
+
+struct usbhs_private {
+        unsigned int usbphyaddr;
+        unsigned int usbcrcaddr;
+        struct renesas_usbhs_platform_info info;
+        struct delayed_work work;
+        struct platform_device *pdev;
+};
+
+#define usbhs_get_priv(pdev)                            \
+        container_of(renesas_usbhs_get_info(pdev),      \
+                     struct usbhs_private, info)
+
+#define usbhs_is_connected(priv)                        \
+        (!((1 << 7) & __raw_readw(priv->usbcrcaddr)))
+
+static int usbhs_get_vbus(struct platform_device *pdev)
+{
+        return usbhs_is_connected(usbhs_get_priv(pdev));
+}
+
+static void usbhs_phy_reset(struct platform_device *pdev)
+{
+        struct usbhs_private *priv = usbhs_get_priv(pdev);
+
+        /* init phy */
+        __raw_writew(0x8a0a, priv->usbcrcaddr);
+}
+
+static int usbhs0_get_id(struct platform_device *pdev)
+{
+        return USBHS_GADGET;
+}
+
+static void usbhs0_work_function(struct work_struct *work)
+{
+        struct usbhs_private *priv = container_of(work, struct usbhs_private,
+                                                  work.work);
+
+        renesas_usbhs_call_notify_hotplug(priv->pdev);
+        schedule_delayed_work(&priv->work, USBHS0_POLL_INTERVAL);
+}
+
+static int usbhs0_hardware_init(struct platform_device *pdev)
+{
+        struct usbhs_private *priv = usbhs_get_priv(pdev);
+
+        priv->pdev = pdev;
+        INIT_DELAYED_WORK(&priv->work, usbhs0_work_function);
+        schedule_delayed_work(&priv->work, USBHS0_POLL_INTERVAL);
+        return 0;
+}
+
+static void usbhs0_hardware_exit(struct platform_device *pdev)
+{
+        struct usbhs_private *priv = usbhs_get_priv(pdev);
+
+        cancel_delayed_work_sync(&priv->work);
+}
+
+static u32 usbhs0_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,
+};
+
+static struct usbhs_private usbhs0_private = {
+        .usbcrcaddr     = 0xe605810c,           /* USBCR2 */
+        .info = {
+                .platform_callback = {
+                        .hardware_init  = usbhs0_hardware_init,
+                        .hardware_exit  = usbhs0_hardware_exit,
+                        .phy_reset      = usbhs_phy_reset,
+                        .get_id         = usbhs0_get_id,
+                        .get_vbus       = usbhs_get_vbus,
+                },
+                .driver_param = {
+                        .buswait_bwait  = 4,
+                        .pipe_type      = usbhs0_pipe_cfg,
+                        .pipe_size      = ARRAY_SIZE(usbhs0_pipe_cfg),
+                },
+        },
+};
+
+static struct resource usbhs0_resources[] = {
+        [0] = {
+                .name   = "USBHS0",
+                .start  = 0xe6890000,
+                .end    = 0xe68900e6 - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = evt2irq(0x1ca0) /* USB0_USB0I0 */,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device usbhs0_device = {
+        .name   = "renesas_usbhs",
+        .id     = 0,
+        .dev = {
+                .platform_data          = &usbhs0_private.info,
+        },
+        .num_resources  = ARRAY_SIZE(usbhs0_resources),
+        .resource       = usbhs0_resources,
+};
+
+/* USBHS1 is connected to CN31 which takes a USB Mini-AB plug
+ *
+ * Use J30 to select between Host and Function. This setting
+ * can however not be detected by software. Hotplug of USBHS1
+ * is provided via IRQ8.
+ */
+#define IRQ8 evt2irq(0x0300)
+
+/* USBHS1 USB Host support via r8a66597_hcd */
 static void usb1_host_port_power(int port, int power)
 {
         if (!power) /* only power-on is supported for now */
@@ -579,9 +708,9 @@ static struct r8a66597_platdata usb1_host_data = {
 
 static struct resource usb1_host_resources[] = {
         [0] = {
-                .name   = "USBHS",
-                .start  = 0xE68B0000,
-                .end    = 0xE68B00E6 - 1,
+                .name   = "USBHS1",
+                .start  = 0xe68b0000,
+                .end    = 0xe68b00e6 - 1,
                 .flags  = IORESOURCE_MEM,
         },
         [1] = {
@@ -602,37 +731,14 @@ static struct platform_device usb1_host_device = {
         .resource       = usb1_host_resources,
 };
 
-/* USB1 (Function) */
+/* USBHS1 USB Function support via renesas_usbhs */
+
 #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)
 
-struct usbhs_private {
-        unsigned int irq;
-        unsigned int usbphyaddr;
-        unsigned int usbcrcaddr;
-        struct renesas_usbhs_platform_info info;
-};
-
-#define usbhs_get_priv(pdev)                            \
-        container_of(renesas_usbhs_get_info(pdev),      \
-                     struct usbhs_private, info)
-
-#define usbhs_is_connected(priv)                        \
-        (!((1 << 7) & __raw_readw(priv->usbcrcaddr)))
-
-static int usbhs1_get_id(struct platform_device *pdev)
-{
-        return USBHS_GADGET;
-}
-
-static int usbhs1_get_vbus(struct platform_device *pdev)
-{
-        return usbhs_is_connected(usbhs_get_priv(pdev));
-}
-
 static irqreturn_t usbhs1_interrupt(int irq, void *data)
 {
         struct platform_device *pdev = data;
@@ -654,12 +760,10 @@ static int usbhs1_hardware_init(struct platform_device *pdev)
         struct usbhs_private *priv = usbhs_get_priv(pdev);
         int ret;
 
-        irq_set_irq_type(priv->irq, IRQ_TYPE_LEVEL_HIGH);
-
         /* clear interrupt status */
         __raw_writew(USB_PHY_MODE | USB_PHY_INT_CLR, priv->usbphyaddr);
 
-        ret = request_irq(priv->irq, usbhs1_interrupt, 0,
+        ret = request_irq(IRQ8, usbhs1_interrupt, IRQF_TRIGGER_HIGH,
                           dev_name(&pdev->dev), pdev);
         if (ret) {
                 dev_err(&pdev->dev, "request_irq err\n");
@@ -679,15 +783,7 @@ static void usbhs1_hardware_exit(struct platform_device *pdev)
         /* clear interrupt status */
         __raw_writew(USB_PHY_MODE | USB_PHY_INT_CLR, priv->usbphyaddr);
 
-        free_irq(priv->irq, pdev);
-}
-
-static void usbhs1_phy_reset(struct platform_device *pdev)
-{
-        struct usbhs_private *priv = usbhs_get_priv(pdev);
-
-        /* init phy */
-        __raw_writew(0x8a0a, priv->usbcrcaddr);
+        free_irq(IRQ8, pdev);
 }
 
 static u32 usbhs1_pipe_cfg[] = {
@@ -710,16 +806,14 @@ static u32 usbhs1_pipe_cfg[] = {
 };
 
 static struct usbhs_private usbhs1_private = {
-        .irq            = evt2irq(0x0300),      /* IRQ8 */
-        .usbphyaddr     = 0xE60581E2,           /* USBPHY1INTAP */
-        .usbcrcaddr     = 0xE6058130,           /* USBCR4 */
+        .usbphyaddr     = 0xe60581e2,           /* USBPHY1INTAP */
+        .usbcrcaddr     = 0xe6058130,           /* USBCR4 */
         .info = {
                 .platform_callback = {
                         .hardware_init  = usbhs1_hardware_init,
                         .hardware_exit  = usbhs1_hardware_exit,
-                        .phy_reset      = usbhs1_phy_reset,
-                        .get_id         = usbhs1_get_id,
-                        .get_vbus       = usbhs1_get_vbus,
+                        .phy_reset      = usbhs_phy_reset,
+                        .get_vbus       = usbhs_get_vbus,
                 },
                 .driver_param = {
                         .buswait_bwait  = 4,
@@ -731,9 +825,9 @@ static struct usbhs_private usbhs1_private = {
 
 static struct resource usbhs1_resources[] = {
         [0] = {
-                .name   = "USBHS",
-                .start  = 0xE68B0000,
-                .end    = 0xE68B00E6 - 1,
+                .name   = "USBHS1",
+                .start  = 0xe68b0000,
+                .end    = 0xe68b00e6 - 1,
                 .flags  = IORESOURCE_MEM,
         },
         [1] = {
@@ -752,7 +846,6 @@ static struct platform_device usbhs1_device = {
         .resource       = usbhs1_resources,
 };
 
-
 /* LED */
 static struct gpio_led mackerel_leds[] = {
         {
@@ -1203,6 +1296,7 @@ static struct platform_device *mackerel_devices[] __initdata = {
         &nor_flash_device,
         &smc911x_device,
         &lcdc_device,
+        &usbhs0_device,
         &usb1_host_device,
         &usbhs1_device,
         &leds_device,
@@ -1301,6 +1395,7 @@ static void __init mackerel_map_io(void)
 
 #define GPIO_PORT9CR    0xE6051009
 #define GPIO_PORT10CR   0xE605100A
+#define GPIO_PORT167CR  0xE60520A7
 #define GPIO_PORT168CR  0xE60520A8
 #define SRCR4           0xe61580bc
 #define USCCR1          0xE6058144
@@ -1354,17 +1449,17 @@ static void __init mackerel_init(void)
         gpio_request(GPIO_PORT151, NULL); /* LCDDON */
         gpio_direction_output(GPIO_PORT151, 1);
 
-        /* USB enable */
-        gpio_request(GPIO_FN_VBUS0_1,    NULL);
-        gpio_request(GPIO_FN_IDIN_1_18,  NULL);
-        gpio_request(GPIO_FN_PWEN_1_115, NULL);
-        gpio_request(GPIO_FN_OVCN_1_114, NULL);
-        gpio_request(GPIO_FN_EXTLP_1,    NULL);
-        gpio_request(GPIO_FN_OVCN2_1,    NULL);
-        gpio_pull_down(GPIO_PORT168CR);
-
-        /* setup USB phy */
-        __raw_writew(0x8a0a, 0xE6058130);       /* USBCR4 */
+        /* USBHS0 */
+        gpio_request(GPIO_FN_VBUS0_0, NULL);
+        gpio_pull_down(GPIO_PORT168CR); /* VBUS0_0 pull down */
+
+        /* USBHS1 */
+        gpio_request(GPIO_FN_VBUS0_1, NULL);
+        gpio_pull_down(GPIO_PORT167CR); /* VBUS0_1 pull down */
+        gpio_request(GPIO_FN_IDIN_1_113, NULL);
+
+        /* USB phy tweak to make the r8a66597_hcd host driver work */
+        __raw_writew(0x8a0a, 0xe6058130);       /* USBCR4 */
 
         /* enable FSI2 port A (ak4643) */
         gpio_request(GPIO_FN_FSIAIBT,   NULL);