1 files changed, 141 insertions, 40 deletions

diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index bde40efc7046..2ba3b070ed0b 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -21,10 +21,16 @@
 #include <linux/usb.h>
 #include <linux/irq.h>
 #include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
 
 #include "musb_core.h"
 
-static void tusb_source_power(struct musb *musb, int is_on);
+struct tusb6010_glue {
+        struct device           *dev;
+        struct platform_device  *musb;
+};
+
+static void tusb_musb_set_vbus(struct musb *musb, int is_on);
 
 #define TUSB_REV_MAJOR(reg_val)         ((reg_val >> 4) & 0xf)
 #define TUSB_REV_MINOR(reg_val)         (reg_val & 0xf)
@@ -50,7 +56,7 @@ u8 tusb_get_revision(struct musb *musb)
         return rev;
 }
 
-static int __init tusb_print_revision(struct musb *musb)
+static int tusb_print_revision(struct musb *musb)
 {
         void __iomem    *tbase = musb->ctrl_base;
         u8              rev;
@@ -275,17 +281,6 @@ static int tusb_draw_power(struct otg_transceiver *x, unsigned mA)
         void __iomem    *tbase = musb->ctrl_base;
         u32             reg;
 
-        /*
-         * Keep clock active when enabled. Note that this is not tied to
-         * drawing VBUS, as with OTG mA can be less than musb->min_power.
-         */
-        if (musb->set_clock) {
-                if (mA)
-                        musb->set_clock(musb->clock, 1);
-                else
-                        musb->set_clock(musb->clock, 0);
-        }
-
         /* tps65030 seems to consume max 100mA, with maybe 60mA available
          * (measured on one board) for things other than tps and tusb.
          *
@@ -348,7 +343,7 @@ static void tusb_set_clock_source(struct musb *musb, unsigned mode)
  * USB link is not suspended ... and tells us the relevant wakeup
  * events.  SW_EN for voltage is handled separately.
  */
-void tusb_allow_idle(struct musb *musb, u32 wakeup_enables)
+static void tusb_allow_idle(struct musb *musb, u32 wakeup_enables)
 {
         void __iomem    *tbase = musb->ctrl_base;
         u32             reg;
@@ -385,7 +380,7 @@ void tusb_allow_idle(struct musb *musb, u32 wakeup_enables)
 /*
  * Updates cable VBUS status. Caller must take care of locking.
  */
-int musb_platform_get_vbus_status(struct musb *musb)
+static int tusb_musb_vbus_status(struct musb *musb)
 {
         void __iomem    *tbase = musb->ctrl_base;
         u32             otg_stat, prcm_mngmt;
@@ -431,7 +426,7 @@ static void musb_do_idle(unsigned long _musb)
                 }
                 /* FALLTHROUGH */
         case OTG_STATE_A_IDLE:
-                tusb_source_power(musb, 0);
+                tusb_musb_set_vbus(musb, 0);
         default:
                 break;
         }
@@ -475,7 +470,7 @@ done:
  * we don't want to treat that full speed J as a wakeup event.
  * ... peripherals must draw only suspend current after 10 msec.
  */
-void musb_platform_try_idle(struct musb *musb, unsigned long timeout)
+static void tusb_musb_try_idle(struct musb *musb, unsigned long timeout)
 {
         unsigned long           default_timeout = jiffies + msecs_to_jiffies(3);
         static unsigned long    last_timer;
@@ -515,7 +510,7 @@ void musb_platform_try_idle(struct musb *musb, unsigned long timeout)
                                 | TUSB_DEV_OTG_TIMER_ENABLE) \
                 : 0)
 
-static void tusb_source_power(struct musb *musb, int is_on)
+static void tusb_musb_set_vbus(struct musb *musb, int is_on)
 {
         void __iomem    *tbase = musb->ctrl_base;
         u32             conf, prcm, timer;
@@ -531,8 +526,6 @@ static void tusb_source_power(struct musb *musb, int is_on)
         devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
 
         if (is_on) {
-                if (musb->set_clock)
-                        musb->set_clock(musb->clock, 1);
                 timer = OTG_TIMER_MS(OTG_TIME_A_WAIT_VRISE);
                 musb->xceiv->default_a = 1;
                 musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
@@ -571,8 +564,6 @@ static void tusb_source_power(struct musb *musb, int is_on)
 
                 devctl &= ~MUSB_DEVCTL_SESSION;
                 conf &= ~TUSB_DEV_CONF_USB_HOST_MODE;
-                if (musb->set_clock)
-                        musb->set_clock(musb->clock, 0);
         }
         prcm &= ~(TUSB_PRCM_MNGMT_15_SW_EN | TUSB_PRCM_MNGMT_33_SW_EN);
 
@@ -599,7 +590,7 @@ static void tusb_source_power(struct musb *musb, int is_on)
  * and peripheral modes in non-OTG configurations by reconfiguring hardware
  * and then setting musb->board_mode. For now, only support OTG mode.
  */
-int musb_platform_set_mode(struct musb *musb, u8 musb_mode)
+static int tusb_musb_set_mode(struct musb *musb, u8 musb_mode)
 {
         void __iomem    *tbase = musb->ctrl_base;
         u32             otg_stat, phy_otg_ctrl, phy_otg_ena, dev_conf;
@@ -677,7 +668,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase)
                         default_a = is_host_enabled(musb);
                 DBG(2, "Default-%c\n", default_a ? 'A' : 'B');
                 musb->xceiv->default_a = default_a;
-                tusb_source_power(musb, default_a);
+                tusb_musb_set_vbus(musb, default_a);
 
                 /* Don't allow idling immediately */
                 if (default_a)
@@ -722,7 +713,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase)
                         switch (musb->xceiv->state) {
                         case OTG_STATE_A_IDLE:
                                 DBG(2, "Got SRP, turning on VBUS\n");
-                                musb_set_vbus(musb, 1);
+                                musb_platform_set_vbus(musb, 1);
 
                                 /* CONNECT can wake if a_wait_bcon is set */
                                 if (musb->a_wait_bcon != 0)
@@ -748,11 +739,11 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase)
                                  */
                                 if (musb->vbuserr_retry) {
                                         musb->vbuserr_retry--;
-                                        tusb_source_power(musb, 1);
+                                        tusb_musb_set_vbus(musb, 1);
                                 } else {
                                         musb->vbuserr_retry
                                                 = VBUSERR_RETRY_COUNT;
-                                        tusb_source_power(musb, 0);
+                                        tusb_musb_set_vbus(musb, 0);
                                 }
                                 break;
                         default:
@@ -786,7 +777,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase)
                         } else {
                                 /* REVISIT report overcurrent to hub? */
                                 ERR("vbus too slow, devctl %02x\n", devctl);
-                                tusb_source_power(musb, 0);
+                                tusb_musb_set_vbus(musb, 0);
                         }
                         break;
                 case OTG_STATE_A_WAIT_BCON:
@@ -807,7 +798,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase)
         return idle_timeout;
 }
 
-static irqreturn_t tusb_interrupt(int irq, void *__hci)
+static irqreturn_t tusb_musb_interrupt(int irq, void *__hci)
 {
         struct musb     *musb = __hci;
         void __iomem    *tbase = musb->ctrl_base;
@@ -911,7 +902,7 @@ static irqreturn_t tusb_interrupt(int irq, void *__hci)
         musb_writel(tbase, TUSB_INT_SRC_CLEAR,
                 int_src & ~TUSB_INT_MASK_RESERVED_BITS);
 
-        musb_platform_try_idle(musb, idle_timeout);
+        tusb_musb_try_idle(musb, idle_timeout);
 
         musb_writel(tbase, TUSB_INT_MASK, int_mask);
         spin_unlock_irqrestore(&musb->lock, flags);
@@ -926,7 +917,7 @@ static int dma_off;
  * REVISIT:
  * - Check what is unnecessary in MGC_HdrcStart()
  */
-void musb_platform_enable(struct musb *musb)
+static void tusb_musb_enable(struct musb *musb)
 {
         void __iomem    *tbase = musb->ctrl_base;
 
@@ -970,7 +961,7 @@ void musb_platform_enable(struct musb *musb)
 /*
  * Disables TUSB6010. Caller must take care of locking.
  */
-void musb_platform_disable(struct musb *musb)
+static void tusb_musb_disable(struct musb *musb)
 {
         void __iomem    *tbase = musb->ctrl_base;
 
@@ -995,7 +986,7 @@ void musb_platform_disable(struct musb *musb)
  * Sets up TUSB6010 CPU interface specific signals and registers
  * Note: Settings optimized for OMAP24xx
  */
-static void __init tusb_setup_cpu_interface(struct musb *musb)
+static void tusb_setup_cpu_interface(struct musb *musb)
 {
         void __iomem    *tbase = musb->ctrl_base;
 
@@ -1022,7 +1013,7 @@ static void __init tusb_setup_cpu_interface(struct musb *musb)
         musb_writel(tbase, TUSB_WAIT_COUNT, 1);
 }
 
-static int __init tusb_start(struct musb *musb)
+static int tusb_musb_start(struct musb *musb)
 {
         void __iomem    *tbase = musb->ctrl_base;
         int             ret = 0;
@@ -1091,7 +1082,7 @@ err:
         return -ENODEV;
 }
 
-int __init musb_platform_init(struct musb *musb, void *board_data)
+static int tusb_musb_init(struct musb *musb)
 {
         struct platform_device  *pdev;
         struct resource         *mem;
@@ -1131,16 +1122,14 @@ int __init musb_platform_init(struct musb *musb, void *board_data)
          */
         musb->mregs += TUSB_BASE_OFFSET;
 
-        ret = tusb_start(musb);
+        ret = tusb_musb_start(musb);
         if (ret) {
                 printk(KERN_ERR "Could not start tusb6010 (%d)\n",
                                 ret);
                 goto done;
         }
-        musb->isr = tusb_interrupt;
+        musb->isr = tusb_musb_interrupt;
 
-        if (is_host_enabled(musb))
-                musb->board_set_vbus = tusb_source_power;
         if (is_peripheral_enabled(musb)) {
                 musb->xceiv->set_power = tusb_draw_power;
                 the_musb = musb;
@@ -1159,7 +1148,7 @@ done:
         return ret;
 }
 
-int musb_platform_exit(struct musb *musb)
+static int tusb_musb_exit(struct musb *musb)
 {
         del_timer_sync(&musb_idle_timer);
         the_musb = NULL;
@@ -1173,3 +1162,115 @@ int musb_platform_exit(struct musb *musb)
         usb_nop_xceiv_unregister();
         return 0;
 }
+
+static const struct musb_platform_ops tusb_ops = {
+        .init           = tusb_musb_init,
+        .exit           = tusb_musb_exit,
+
+        .enable         = tusb_musb_enable,
+        .disable        = tusb_musb_disable,
+
+        .set_mode       = tusb_musb_set_mode,
+        .try_idle       = tusb_musb_try_idle,
+
+        .vbus_status    = tusb_musb_vbus_status,
+        .set_vbus       = tusb_musb_set_vbus,
+};
+
+static u64 tusb_dmamask = DMA_BIT_MASK(32);
+
+static int __init tusb_probe(struct platform_device *pdev)
+{
+        struct musb_hdrc_platform_data  *pdata = pdev->dev.platform_data;
+        struct platform_device          *musb;
+        struct tusb6010_glue            *glue;
+
+        int                             ret = -ENOMEM;
+
+        glue = kzalloc(sizeof(*glue), GFP_KERNEL);
+        if (!glue) {
+                dev_err(&pdev->dev, "failed to allocate glue context\n");
+                goto err0;
+        }
+
+        musb = platform_device_alloc("musb-hdrc", -1);
+        if (!musb) {
+                dev_err(&pdev->dev, "failed to allocate musb device\n");
+                goto err1;
+        }
+
+        musb->dev.parent                = &pdev->dev;
+        musb->dev.dma_mask              = &tusb_dmamask;
+        musb->dev.coherent_dma_mask     = tusb_dmamask;
+
+        glue->dev                       = &pdev->dev;
+        glue->musb                      = musb;
+
+        pdata->platform_ops             = &tusb_ops;
+
+        platform_set_drvdata(pdev, glue);
+
+        ret = platform_device_add_resources(musb, pdev->resource,
+                        pdev->num_resources);
+        if (ret) {
+                dev_err(&pdev->dev, "failed to add resources\n");
+                goto err2;
+        }
+
+        ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
+        if (ret) {
+                dev_err(&pdev->dev, "failed to add platform_data\n");
+                goto err2;
+        }
+
+        ret = platform_device_add(musb);
+        if (ret) {
+                dev_err(&pdev->dev, "failed to register musb device\n");
+                goto err1;
+        }
+
+        return 0;
+
+err2:
+        platform_device_put(musb);
+
+err1:
+        kfree(glue);
+
+err0:
+        return ret;
+}
+
+static int __exit tusb_remove(struct platform_device *pdev)
+{
+        struct tusb6010_glue            *glue = platform_get_drvdata(pdev);
+
+        platform_device_del(glue->musb);
+        platform_device_put(glue->musb);
+        kfree(glue);
+
+        return 0;
+}
+
+static struct platform_driver tusb_driver = {
+        .remove         = __exit_p(tusb_remove),
+        .driver         = {
+                .name   = "musb-tusb",
+        },
+};
+
+MODULE_DESCRIPTION("TUSB6010 MUSB Glue Layer");
+MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
+MODULE_LICENSE("GPL v2");
+
+static int __init tusb_init(void)
+{
+        return platform_driver_probe(&tusb_driver, tusb_probe);
+}
+subsys_initcall(tusb_init);
+
+static void __exit tusb_exit(void)
+{
+        platform_driver_unregister(&tusb_driver);
+}
+module_exit(tusb_exit);