usb: gadget: at91_udc: Drop uclk clock
Now that at91 system clocks forward set_rate request to their parent we
can remove the uclk clock and directly call clk_set_rate on fclk.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/drivers/usb/gadget/udc/at91_udc.c b/drivers/usb/gadget/udc/at91_udc.c
index 9ff2f7e..d33f299 100644
--- a/drivers/usb/gadget/udc/at91_udc.c
+++ b/drivers/usb/gadget/udc/at91_udc.c
@@ -895,8 +895,6 @@
return;
udc->clocked = 1;
- if (IS_ENABLED(CONFIG_COMMON_CLK))
- clk_enable(udc->uclk);
clk_enable(udc->iclk);
clk_enable(udc->fclk);
}
@@ -909,8 +907,6 @@
udc->gadget.speed = USB_SPEED_UNKNOWN;
clk_disable(udc->fclk);
clk_disable(udc->iclk);
- if (IS_ENABLED(CONFIG_COMMON_CLK))
- clk_disable(udc->uclk);
}
/*
@@ -1781,25 +1777,17 @@
/* get interface and function clocks */
udc->iclk = clk_get(dev, "pclk");
udc->fclk = clk_get(dev, "hclk");
- if (IS_ENABLED(CONFIG_COMMON_CLK))
- udc->uclk = clk_get(dev, "usb_clk");
- if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk) ||
- (IS_ENABLED(CONFIG_COMMON_CLK) && IS_ERR(udc->uclk))) {
+ if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk)) {
DBG("clocks missing\n");
retval = -ENODEV;
goto fail1;
}
/* don't do anything until we have both gadget driver and VBUS */
- if (IS_ENABLED(CONFIG_COMMON_CLK)) {
- clk_set_rate(udc->uclk, 48000000);
- retval = clk_prepare(udc->uclk);
- if (retval)
- goto fail1;
- }
+ clk_set_rate(udc->fclk, 48000000);
retval = clk_prepare(udc->fclk);
if (retval)
- goto fail1a;
+ goto fail1;
retval = clk_prepare_enable(udc->iclk);
if (retval)
@@ -1873,12 +1861,7 @@
clk_unprepare(udc->iclk);
fail1b:
clk_unprepare(udc->fclk);
-fail1a:
- if (IS_ENABLED(CONFIG_COMMON_CLK))
- clk_unprepare(udc->uclk);
fail1:
- if (IS_ENABLED(CONFIG_COMMON_CLK) && !IS_ERR(udc->uclk))
- clk_put(udc->uclk);
if (!IS_ERR(udc->fclk))
clk_put(udc->fclk);
if (!IS_ERR(udc->iclk))
@@ -1924,15 +1907,11 @@
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, resource_size(res));
- if (IS_ENABLED(CONFIG_COMMON_CLK))
- clk_unprepare(udc->uclk);
clk_unprepare(udc->fclk);
clk_unprepare(udc->iclk);
clk_put(udc->iclk);
clk_put(udc->fclk);
- if (IS_ENABLED(CONFIG_COMMON_CLK))
- clk_put(udc->uclk);
return 0;
}