From: Mian Yousaf Kaukab <mian.yousaf.kaukab@xxxxxxxxxxxxxx>
Add common clock support code for the ab8500-usb phy driver.
Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Acked-by: Maxime Coquelin <maxime.coquelin@xxxxxx>
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@xxxxxxxxxxxxxx>
Signed-off-by: Fabio Baltieri <fabio.baltieri@xxxxxxxxxx>
---
drivers/usb/phy/phy-ab8500-usb.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c
index b043faa..cc0d7e5 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;
--
1.8.2
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
