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path: root/drivers/usb/musb/blackfin.c
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Diffstat (limited to 'drivers/usb/musb/blackfin.c')
-rw-r--r--drivers/usb/musb/blackfin.c74
1 files changed, 57 insertions, 17 deletions
diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c
index ac4422b33dcd..a441a2de8619 100644
--- a/drivers/usb/musb/blackfin.c
+++ b/drivers/usb/musb/blackfin.c
@@ -33,10 +33,45 @@ struct bfin_glue {
};
#define glue_to_musb(g) platform_get_drvdata(g->musb)
+static u32 bfin_fifo_offset(u8 epnum)
+{
+ return USB_OFFSET(USB_EP0_FIFO) + (epnum * 8);
+}
+
+static u8 bfin_readb(const void __iomem *addr, unsigned offset)
+{
+ return (u8)(bfin_read16(addr + offset));
+}
+
+static u16 bfin_readw(const void __iomem *addr, unsigned offset)
+{
+ return bfin_read16(addr + offset);
+}
+
+static u32 bfin_readl(const void __iomem *addr, unsigned offset)
+{
+ return (u32)(bfin_read16(addr + offset));
+}
+
+static void bfin_writeb(void __iomem *addr, unsigned offset, u8 data)
+{
+ bfin_write16(addr + offset, (u16)data);
+}
+
+static void bfin_writew(void __iomem *addr, unsigned offset, u16 data)
+{
+ bfin_write16(addr + offset, data);
+}
+
+static void binf_writel(void __iomem *addr, unsigned offset, u32 data)
+{
+ bfin_write16(addr + offset, (u16)data);
+}
+
/*
* Load an endpoint's FIFO
*/
-void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
+static void bfin_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
{
struct musb *musb = hw_ep->musb;
void __iomem *fifo = hw_ep->fifo;
@@ -100,7 +135,7 @@ void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
/*
* Unload an endpoint's FIFO
*/
-void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
+static void bfin_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
{
struct musb *musb = hw_ep->musb;
void __iomem *fifo = hw_ep->fifo;
@@ -185,8 +220,8 @@ static irqreturn_t blackfin_interrupt(int irq, void *__hci)
}
/* Start sampling ID pin, when plug is removed from MUSB */
- if ((musb->xceiv->state == OTG_STATE_B_IDLE
- || musb->xceiv->state == OTG_STATE_A_WAIT_BCON) ||
+ if ((musb->xceiv->otg->state == OTG_STATE_B_IDLE
+ || musb->xceiv->otg->state == OTG_STATE_A_WAIT_BCON) ||
(musb->int_usb & MUSB_INTR_DISCONNECT && is_host_active(musb))) {
mod_timer(&musb_conn_timer, jiffies + TIMER_DELAY);
musb->a_wait_bcon = TIMER_DELAY;
@@ -205,7 +240,7 @@ static void musb_conn_timer_handler(unsigned long _musb)
static u8 toggle;
spin_lock_irqsave(&musb->lock, flags);
- switch (musb->xceiv->state) {
+ switch (musb->xceiv->otg->state) {
case OTG_STATE_A_IDLE:
case OTG_STATE_A_WAIT_BCON:
/* Start a new session */
@@ -219,7 +254,7 @@ static void musb_conn_timer_handler(unsigned long _musb)
if (!(val & MUSB_DEVCTL_BDEVICE)) {
gpio_set_value(musb->config->gpio_vrsel, 1);
- musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
+ musb->xceiv->otg->state = OTG_STATE_A_WAIT_BCON;
} else {
gpio_set_value(musb->config->gpio_vrsel, 0);
/* Ignore VBUSERROR and SUSPEND IRQ */
@@ -229,7 +264,7 @@ static void musb_conn_timer_handler(unsigned long _musb)
val = MUSB_INTR_SUSPEND | MUSB_INTR_VBUSERROR;
musb_writeb(musb->mregs, MUSB_INTRUSB, val);
- musb->xceiv->state = OTG_STATE_B_IDLE;
+ musb->xceiv->otg->state = OTG_STATE_B_IDLE;
}
mod_timer(&musb_conn_timer, jiffies + TIMER_DELAY);
break;
@@ -245,7 +280,7 @@ static void musb_conn_timer_handler(unsigned long _musb)
if (!(val & MUSB_DEVCTL_BDEVICE)) {
gpio_set_value(musb->config->gpio_vrsel, 1);
- musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
+ musb->xceiv->otg->state = OTG_STATE_A_WAIT_BCON;
} else {
gpio_set_value(musb->config->gpio_vrsel, 0);
@@ -280,13 +315,13 @@ static void musb_conn_timer_handler(unsigned long _musb)
break;
default:
dev_dbg(musb->controller, "%s state not handled\n",
- usb_otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->otg->state));
break;
}
spin_unlock_irqrestore(&musb->lock, flags);
dev_dbg(musb->controller, "state is %s\n",
- usb_otg_state_string(musb->xceiv->state));
+ usb_otg_state_string(musb->xceiv->otg->state));
}
static void bfin_musb_enable(struct musb *musb)
@@ -307,7 +342,7 @@ static void bfin_musb_set_vbus(struct musb *musb, int is_on)
dev_dbg(musb->controller, "VBUS %s, devctl %02x "
/* otg %3x conf %08x prcm %08x */ "\n",
- usb_otg_state_string(musb->xceiv->state),
+ usb_otg_state_string(musb->xceiv->otg->state),
musb_readb(musb->mregs, MUSB_DEVCTL));
}
@@ -433,6 +468,15 @@ static const struct musb_platform_ops bfin_ops = {
.init = bfin_musb_init,
.exit = bfin_musb_exit,
+ .readb = bfin_readb,
+ .writeb = bfin_writeb,
+ .readw = bfin_readw,
+ .writew = bfin_writew,
+ .readl = bfin_readl,
+ .writel = bfin_writel,
+ .fifo_mode = 2,
+ .read_fifo = bfin_read_fifo,
+ .write_fifo = bfin_write_fifo,
.enable = bfin_musb_enable,
.disable = bfin_musb_disable,
@@ -456,16 +500,12 @@ static int bfin_probe(struct platform_device *pdev)
int ret = -ENOMEM;
glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
- if (!glue) {
- dev_err(&pdev->dev, "failed to allocate glue context\n");
+ if (!glue)
goto err0;
- }
musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
- if (!musb) {
- dev_err(&pdev->dev, "failed to allocate musb device\n");
+ if (!musb)
goto err0;
- }
musb->dev.parent = &pdev->dev;
musb->dev.dma_mask = &bfin_dmamask;