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path: root/drivers/usb/gadget/s3c-hsotg.c
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Diffstat (limited to 'drivers/usb/gadget/s3c-hsotg.c')
-rw-r--r--drivers/usb/gadget/s3c-hsotg.c143
1 files changed, 101 insertions, 42 deletions
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index 1172eaeddd85..2a9cb674926a 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -617,7 +617,7 @@ static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg,
to_write = DIV_ROUND_UP(to_write, 4);
data = hs_req->req.buf + buf_pos;
- writesl(hsotg->regs + EPFIFO(hs_ep->index), data, to_write);
+ iowrite32_rep(hsotg->regs + EPFIFO(hs_ep->index), data, to_write);
return (to_write >= can_write) ? -ENOSPC : 0;
}
@@ -720,8 +720,8 @@ static void s3c_hsotg_start_req(struct s3c_hsotg *hsotg,
ureq->length, ureq->actual);
if (0)
dev_dbg(hsotg->dev,
- "REQ buf %p len %d dma 0x%08x noi=%d zp=%d snok=%d\n",
- ureq->buf, length, ureq->dma,
+ "REQ buf %p len %d dma 0x%pad noi=%d zp=%d snok=%d\n",
+ ureq->buf, length, &ureq->dma,
ureq->no_interrupt, ureq->zero, ureq->short_not_ok);
maxreq = get_ep_limit(hs_ep);
@@ -789,8 +789,8 @@ static void s3c_hsotg_start_req(struct s3c_hsotg *hsotg,
dma_reg = dir_in ? DIEPDMA(index) : DOEPDMA(index);
writel(ureq->dma, hsotg->regs + dma_reg);
- dev_dbg(hsotg->dev, "%s: 0x%08x => 0x%08x\n",
- __func__, ureq->dma, dma_reg);
+ dev_dbg(hsotg->dev, "%s: 0x%pad => 0x%08x\n",
+ __func__, &ureq->dma, dma_reg);
}
ctrl |= DxEPCTL_EPEna; /* ensure ep enabled */
@@ -1186,6 +1186,41 @@ static void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg);
static void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg);
/**
+ * s3c_hsotg_stall_ep0 - stall ep0
+ * @hsotg: The device state
+ *
+ * Set stall for ep0 as response for setup request.
+ */
+static void s3c_hsotg_stall_ep0(struct s3c_hsotg *hsotg) {
+ struct s3c_hsotg_ep *ep0 = &hsotg->eps[0];
+ u32 reg;
+ u32 ctrl;
+
+ dev_dbg(hsotg->dev, "ep0 stall (dir=%d)\n", ep0->dir_in);
+ reg = (ep0->dir_in) ? DIEPCTL0 : DOEPCTL0;
+
+ /*
+ * DxEPCTL_Stall will be cleared by EP once it has
+ * taken effect, so no need to clear later.
+ */
+
+ ctrl = readl(hsotg->regs + reg);
+ ctrl |= DxEPCTL_Stall;
+ ctrl |= DxEPCTL_CNAK;
+ writel(ctrl, hsotg->regs + reg);
+
+ dev_dbg(hsotg->dev,
+ "written DxEPCTL=0x%08x to %08x (DxEPCTL=0x%08x)\n",
+ ctrl, reg, readl(hsotg->regs + reg));
+
+ /*
+ * complete won't be called, so we enqueue
+ * setup request here
+ */
+ s3c_hsotg_enqueue_setup(hsotg);
+}
+
+/**
* s3c_hsotg_process_control - process a control request
* @hsotg: The device state
* @ctrl: The control request received
@@ -1262,38 +1297,8 @@ static void s3c_hsotg_process_control(struct s3c_hsotg *hsotg,
* so respond with a STALL for the status stage to indicate failure.
*/
- if (ret < 0) {
- u32 reg;
- u32 ctrl;
-
- dev_dbg(hsotg->dev, "ep0 stall (dir=%d)\n", ep0->dir_in);
- reg = (ep0->dir_in) ? DIEPCTL0 : DOEPCTL0;
-
- /*
- * DxEPCTL_Stall will be cleared by EP once it has
- * taken effect, so no need to clear later.
- */
-
- ctrl = readl(hsotg->regs + reg);
- ctrl |= DxEPCTL_Stall;
- ctrl |= DxEPCTL_CNAK;
- writel(ctrl, hsotg->regs + reg);
-
- dev_dbg(hsotg->dev,
- "written DxEPCTL=0x%08x to %08x (DxEPCTL=0x%08x)\n",
- ctrl, reg, readl(hsotg->regs + reg));
-
- /*
- * don't believe we need to anything more to get the EP
- * to reply with a STALL packet
- */
-
- /*
- * complete won't be called, so we enqueue
- * setup request here
- */
- s3c_hsotg_enqueue_setup(hsotg);
- }
+ if (ret < 0)
+ s3c_hsotg_stall_ep0(hsotg);
}
/**
@@ -1488,7 +1493,7 @@ static void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size)
* note, we might over-write the buffer end by 3 bytes depending on
* alignment of the data.
*/
- readsl(fifo, hs_req->req.buf + read_ptr, to_read);
+ ioread32_rep(fifo, hs_req->req.buf + read_ptr, to_read);
}
/**
@@ -2832,6 +2837,15 @@ static int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value)
dev_info(hs->dev, "%s(ep %p %s, %d)\n", __func__, ep, ep->name, value);
+ if (index == 0) {
+ if (value)
+ s3c_hsotg_stall_ep0(hs);
+ else
+ dev_warn(hs->dev,
+ "%s: can't clear halt on ep0\n", __func__);
+ return 0;
+ }
+
/* write both IN and OUT control registers */
epreg = DIEPCTL(index);
@@ -3760,10 +3774,55 @@ static int s3c_hsotg_remove(struct platform_device *pdev)
return 0;
}
-#if 1
-#define s3c_hsotg_suspend NULL
-#define s3c_hsotg_resume NULL
-#endif
+static int s3c_hsotg_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct s3c_hsotg *hsotg = platform_get_drvdata(pdev);
+ unsigned long flags;
+ int ret = 0;
+
+ if (hsotg->driver)
+ dev_info(hsotg->dev, "suspending usb gadget %s\n",
+ hsotg->driver->driver.name);
+
+ spin_lock_irqsave(&hsotg->lock, flags);
+ s3c_hsotg_disconnect(hsotg);
+ s3c_hsotg_phy_disable(hsotg);
+ hsotg->gadget.speed = USB_SPEED_UNKNOWN;
+ spin_unlock_irqrestore(&hsotg->lock, flags);
+
+ if (hsotg->driver) {
+ int ep;
+ for (ep = 0; ep < hsotg->num_of_eps; ep++)
+ s3c_hsotg_ep_disable(&hsotg->eps[ep].ep);
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies),
+ hsotg->supplies);
+ }
+
+ return ret;
+}
+
+static int s3c_hsotg_resume(struct platform_device *pdev)
+{
+ struct s3c_hsotg *hsotg = platform_get_drvdata(pdev);
+ unsigned long flags;
+ int ret = 0;
+
+ if (hsotg->driver) {
+ dev_info(hsotg->dev, "resuming usb gadget %s\n",
+ hsotg->driver->driver.name);
+ ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies),
+ hsotg->supplies);
+ }
+
+ spin_lock_irqsave(&hsotg->lock, flags);
+ hsotg->last_rst = jiffies;
+ s3c_hsotg_phy_enable(hsotg);
+ s3c_hsotg_core_init(hsotg);
+ spin_unlock_irqrestore(&hsotg->lock, flags);
+
+ return ret;
+}
#ifdef CONFIG_OF
static const struct of_device_id s3c_hsotg_of_ids[] = {