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| author | Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> | 2013-05-15 14:03:26 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-05-28 20:00:46 +0300 |
| commit | d0ed0645a5cfb0cccca6baa84b459eb2078e7fb1 (patch) | |
| tree | 0f5109b90b3495544e35a0c2c46c785693b884ee /drivers/usb/phy | |
| parent | 3147dad6fa457e0bb7edaab36f6d290c7048b49e (diff) | |
| download | linux-d0ed0645a5cfb0cccca6baa84b459eb2078e7fb1.tar.gz linux-d0ed0645a5cfb0cccca6baa84b459eb2078e7fb1.tar.bz2 linux-d0ed0645a5cfb0cccca6baa84b459eb2078e7fb1.zip | |
usb: phy: ab8500-usb: add transceiver clock control
Add common clock support code for the ab8500-usb phy driver.
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/phy')
| -rw-r--r-- | drivers/usb/phy/phy-ab8500-usb.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c index f760e935e059..bdf7f570b5e4 100644 --- a/drivers/usb/phy/phy-ab8500-usb.c +++ b/drivers/usb/phy/phy-ab8500-usb.c @@ -29,6 +29,8 @@ #include <linux/notifier.h> #include <linux/interrupt.h> #include <linux/delay.h> +#include <linux/clk.h> +#include <linux/err.h> #include <linux/mfd/abx500.h> #include <linux/mfd/abx500/ab8500.h> #include <linux/usb/musb-ux500.h> @@ -126,6 +128,7 @@ struct ab8500_usb { unsigned vbus_draw; struct work_struct phy_dis_work; enum ab8500_usb_mode mode; + struct clk *sysclk; struct regulator *v_ape; struct regulator *v_musb; struct regulator *v_ulpi; @@ -252,6 +255,9 @@ static void ab8500_usb_phy_enable(struct ab8500_usb *ab, bool sel_host) if (IS_ERR(ab->pinctrl)) dev_err(ab->dev, "could not get/set default pinstate\n"); + if (clk_prepare_enable(ab->sysclk)) + dev_err(ab->dev, "can't prepare/enable clock\n"); + ab8500_usb_regulator_enable(ab); abx500_mask_and_set_register_interruptible(ab->dev, @@ -274,6 +280,8 @@ static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) /* Needed to disable the phy.*/ ab8500_usb_wd_workaround(ab); + clk_disable_unprepare(ab->sysclk); + ab8500_usb_regulator_disable(ab); if (!IS_ERR(ab->pinctrl)) { @@ -784,6 +792,12 @@ static int ab8500_usb_probe(struct platform_device *pdev) if (err) return err; + ab->sysclk = devm_clk_get(ab->dev, "sysclk"); + if (IS_ERR(ab->sysclk)) { + dev_err(ab->dev, "Could not get sysclk.\n"); + return PTR_ERR(ab->sysclk); + } + err = ab8500_usb_irq_setup(pdev, ab); if (err < 0) return err; |