mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 01:04:19 +08:00
USB ehci mxc: sanitize clock handling
Every i.MX ehci controller has a ahb and a ipg clock, so request it on every SoC. Do not make a special case for the usb phy clock of the i.MX51. Just request it but make it optional. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
parent
198ad2cecd
commit
c943740ccd
@ -32,7 +32,7 @@
|
||||
#define ULPI_VIEWPORT_OFFSET 0x170
|
||||
|
||||
struct ehci_mxc_priv {
|
||||
struct clk *usbclk, *ahbclk, *phy1clk;
|
||||
struct clk *usbclk, *ahbclk, *phyclk;
|
||||
struct usb_hcd *hcd;
|
||||
};
|
||||
|
||||
@ -166,31 +166,26 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
|
||||
}
|
||||
|
||||
/* enable clocks */
|
||||
priv->usbclk = clk_get(dev, "usb");
|
||||
priv->usbclk = clk_get(dev, "ipg");
|
||||
if (IS_ERR(priv->usbclk)) {
|
||||
ret = PTR_ERR(priv->usbclk);
|
||||
goto err_clk;
|
||||
}
|
||||
clk_prepare_enable(priv->usbclk);
|
||||
|
||||
if (!cpu_is_mx35() && !cpu_is_mx25()) {
|
||||
priv->ahbclk = clk_get(dev, "usb_ahb");
|
||||
priv->ahbclk = clk_get(dev, "ahb");
|
||||
if (IS_ERR(priv->ahbclk)) {
|
||||
ret = PTR_ERR(priv->ahbclk);
|
||||
goto err_clk_ahb;
|
||||
}
|
||||
clk_prepare_enable(priv->ahbclk);
|
||||
}
|
||||
|
||||
/* "dr" device has its own clock on i.MX51 */
|
||||
if (cpu_is_mx51() && (pdev->id == 0)) {
|
||||
priv->phy1clk = clk_get(dev, "usb_phy1");
|
||||
if (IS_ERR(priv->phy1clk)) {
|
||||
ret = PTR_ERR(priv->phy1clk);
|
||||
goto err_clk_phy;
|
||||
}
|
||||
clk_prepare_enable(priv->phy1clk);
|
||||
}
|
||||
priv->phyclk = clk_get(dev, "phy");
|
||||
if (IS_ERR(priv->phyclk))
|
||||
priv->phyclk = NULL;
|
||||
if (priv->phyclk)
|
||||
clk_prepare_enable(priv->phyclk);
|
||||
|
||||
|
||||
/* call platform specific init function */
|
||||
@ -265,15 +260,13 @@ err_add:
|
||||
if (pdata && pdata->exit)
|
||||
pdata->exit(pdev);
|
||||
err_init:
|
||||
if (priv->phy1clk) {
|
||||
clk_disable_unprepare(priv->phy1clk);
|
||||
clk_put(priv->phy1clk);
|
||||
if (priv->phyclk) {
|
||||
clk_disable_unprepare(priv->phyclk);
|
||||
clk_put(priv->phyclk);
|
||||
}
|
||||
err_clk_phy:
|
||||
if (priv->ahbclk) {
|
||||
|
||||
clk_disable_unprepare(priv->ahbclk);
|
||||
clk_put(priv->ahbclk);
|
||||
}
|
||||
err_clk_ahb:
|
||||
clk_disable_unprepare(priv->usbclk);
|
||||
clk_put(priv->usbclk);
|
||||
@ -309,13 +302,12 @@ static int __exit ehci_mxc_drv_remove(struct platform_device *pdev)
|
||||
|
||||
clk_disable_unprepare(priv->usbclk);
|
||||
clk_put(priv->usbclk);
|
||||
if (priv->ahbclk) {
|
||||
clk_disable_unprepare(priv->ahbclk);
|
||||
clk_put(priv->ahbclk);
|
||||
}
|
||||
if (priv->phy1clk) {
|
||||
clk_disable_unprepare(priv->phy1clk);
|
||||
clk_put(priv->phy1clk);
|
||||
|
||||
if (priv->phyclk) {
|
||||
clk_disable_unprepare(priv->phyclk);
|
||||
clk_put(priv->phyclk);
|
||||
}
|
||||
|
||||
kfree(priv);
|
||||
|
Loading…
Reference in New Issue
Block a user