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Commit d0ed0645 authored by Mian Yousaf Kaukab's avatar Mian Yousaf Kaukab Committed by Felipe Balbi
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usb: phy: ab8500-usb: add transceiver clock control 



Add common clock support code for the ab8500-usb phy driver.

Acked-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Acked-by: default avatarMaxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: default avatarMian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Signed-off-by: default avatarFabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 3147dad6

drivers/usb/phy/phy-ab8500-usb.c

+14 −0
Original line number Diff line number Diff line
@@ -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;