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usb: phy: ab8500-usb: add transceiver clock control

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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>
This commit is contained in:
Mian Yousaf Kaukab 2013-05-15 14:03:26 +02:00 committed by Felipe Balbi
parent 3147dad6fa
commit d0ed0645a5
1 changed files with 14 additions and 0 deletions
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14
drivers/usb/phy/phy-ab8500-usb.c
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@ -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;