diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2012-05-16 16:35:25 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-05-16 16:35:25 +0200 |
| commit | 3c0dec5f58b3c7b3627715126d1bf9b030a076f0 (patch) | |
| tree | 4bf8f56fca3bf6be109209b116fc8e32cb2e0f9e /drivers/usb | |
| parent | fcd8d84a585f3578a9ebdd27e757495a27415322 (diff) | |
| parent | 7e0fa1b5fa91d9aa456d102c273b2cf0f2e95d39 (diff) | |
Merge branch 'clk-next' of git://git.linaro.org/people/mturquette/linux into next/clock
* 'clk-next' of git://git.linaro.org/people/mturquette/linux:
clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
clk: Provide dummy clk_unregister()
ARM: Kirkwood: Replace clock gating
ARM: Orion: Audio: Add clk/clkdev support
ARM: Orion: PCIE: Add support for clk
ARM: Orion: XOR: Add support for clk
ARM: Orion: CESA: Add support for clk
ARM: Orion: SDIO: Add support for clk.
ARM: Orion: NAND: Add support for clk, if there is one.
ARM: Orion: EHCI: Add support for enabling clocks
ARM: Orion: SATA: Add per channel clk/clkdev support.
ARM: Orion: UART: Get the clock rate via clk_get_rate().
ARM: Orion: WDT: Add clk/clkdev support
ARM: Orion: Eth: Add clk/clkdev support.
ARM: Orion: SPI: Add clk/clkdev support.
ARM: Orion: Add clocks using the generic clk infrastructure.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/ehci-orion.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index 6c6a5a3b4ea7..82de1073aa52 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -12,6 +12,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/mbus.h> +#include <linux/clk.h> #include <plat/ehci-orion.h> #define rdl(off) __raw_readl(hcd->regs + (off)) @@ -198,6 +199,7 @@ static int __devinit ehci_orion_drv_probe(struct platform_device *pdev) struct resource *res; struct usb_hcd *hcd; struct ehci_hcd *ehci; + struct clk *clk; void __iomem *regs; int irq, err; @@ -238,6 +240,14 @@ static int __devinit ehci_orion_drv_probe(struct platform_device *pdev) goto err2; } + /* Not all platforms can gate the clock, so it is not + an error if the clock does not exists. */ + clk = clk_get(&pdev->dev, NULL); + if (!IS_ERR(clk)) { + clk_prepare_enable(clk); + clk_put(clk); + } + hcd = usb_create_hcd(&ehci_orion_hc_driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { @@ -301,12 +311,18 @@ err1: static int __exit ehci_orion_drv_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); + struct clk *clk; usb_remove_hcd(hcd); iounmap(hcd->regs); release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); + clk = clk_get(&pdev->dev, NULL); + if (!IS_ERR(clk)) { + clk_disable_unprepare(clk); + clk_put(clk); + } return 0; } |