The origianl understanding of clock is wrong. The UDC controller
only have one clock input.
Passing clock name by pdata is wrong. The clock is defined by device
iteself.
Signed-off-by: Chao Xie <chao.xie@xxxxxxxxxxx>
---
drivers/usb/gadget/mv_udc.h | 3 +--
drivers/usb/gadget/mv_udc_core.c | 27 +++++++--------------------
2 files changed, 8 insertions(+), 22 deletions(-)
diff --git a/drivers/usb/gadget/mv_udc.h b/drivers/usb/gadget/mv_udc.h
index 9073436..be77f20 100644
--- a/drivers/usb/gadget/mv_udc.h
+++ b/drivers/usb/gadget/mv_udc.h
@@ -222,8 +222,7 @@ struct mv_udc {
struct mv_usb_platform_data *pdata;
/* some SOC has mutiple clock sources for USB*/
- unsigned int clknum;
- struct clk *clk[0];
+ struct clk *clk;
};
/* endpoint data structure */
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c
index c8cf959..988e94a 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -1006,18 +1006,12 @@ static struct usb_ep_ops mv_ep_ops = {
static void udc_clock_enable(struct mv_udc *udc)
{
- unsigned int i;
-
- for (i = 0; i < udc->clknum; i++)
- clk_prepare_enable(udc->clk[i]);
+ clk_prepare_enable(udc->clk);
}
static void udc_clock_disable(struct mv_udc *udc)
{
- unsigned int i;
-
- for (i = 0; i < udc->clknum; i++)
- clk_disable_unprepare(udc->clk[i]);
+ clk_disable_unprepare(udc->clk);
}
static void udc_stop(struct mv_udc *udc)
@@ -2151,7 +2145,6 @@ static int mv_udc_probe(struct platform_device *pdev)
struct mv_usb_platform_data *pdata = pdev->dev.platform_data;
struct mv_udc *udc;
int retval = 0;
- int clk_i = 0;
struct resource *r;
size_t size;
@@ -2160,8 +2153,7 @@ static int mv_udc_probe(struct platform_device *pdev)
return -ENODEV;
}
- size = sizeof(*udc) + sizeof(struct clk *) * pdata->clknum;
- udc = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
+ udc = devm_kzalloc(&pdev->dev, sizeof(*udc), GFP_KERNEL);
if (udc == NULL) {
dev_err(&pdev->dev, "failed to allocate memory for udc\n");
return -ENOMEM;
@@ -2184,15 +2176,10 @@ static int mv_udc_probe(struct platform_device *pdev)
}
#endif
- udc->clknum = pdata->clknum;
- for (clk_i = 0; clk_i < udc->clknum; clk_i++) {
- udc->clk[clk_i] = devm_clk_get(&pdev->dev,
- pdata->clkname[clk_i]);
- if (IS_ERR(udc->clk[clk_i])) {
- retval = PTR_ERR(udc->clk[clk_i]);
- return retval;
- }
- }
+ /* udc only have one sysclk. */
+ udc->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(udc->clk))
+ return PTR_ERR(udc->clk);
r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "capregs");
if (r == NULL) {
--
1.7.4.1
--
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