diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/phy/phy-ab8500-usb.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c index 888dad65bf9b..90a3278d2820 100644 --- a/drivers/usb/phy/phy-ab8500-usb.c +++ b/drivers/usb/phy/phy-ab8500-usb.c @@ -33,6 +33,7 @@ #include <linux/mfd/abx500/ab8500.h> #include <linux/usb/musb-ux500.h> #include <linux/regulator/consumer.h> +#include <linux/pinctrl/consumer.h> /* Bank AB8500_SYS_CTRL2_BLOCK */ #define AB8500_MAIN_WD_CTRL_REG 0x01 @@ -132,6 +133,8 @@ struct ab8500_usb { struct regulator *v_ulpi; int saved_v_ulpi; int previous_link_status_state; + struct pinctrl *pinctrl; + struct pinctrl_state *pins_sleep; }; static inline struct ab8500_usb *phy_to_ab(struct usb_phy *x) @@ -240,6 +243,11 @@ static void ab8500_usb_phy_enable(struct ab8500_usb *ab, bool sel_host) bit = sel_host ? AB8500_BIT_PHY_CTRL_HOST_EN : AB8500_BIT_PHY_CTRL_DEVICE_EN; + /* mux and configure USB pins to DEFAULT state */ + ab->pinctrl = pinctrl_get_select(ab->dev, PINCTRL_STATE_DEFAULT); + if (IS_ERR(ab->pinctrl)) + dev_err(ab->dev, "could not get/set default pinstate\n"); + ab8500_usb_regulator_enable(ab); abx500_mask_and_set_register_interruptible(ab->dev, @@ -263,6 +271,22 @@ static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) ab8500_usb_wd_workaround(ab); ab8500_usb_regulator_disable(ab); + + if (!IS_ERR(ab->pinctrl)) { + /* configure USB pins to SLEEP state */ + ab->pins_sleep = pinctrl_lookup_state(ab->pinctrl, + PINCTRL_STATE_SLEEP); + + if (IS_ERR(ab->pins_sleep)) + dev_dbg(ab->dev, "could not get sleep pinstate\n"); + else if (pinctrl_select_state(ab->pinctrl, ab->pins_sleep)) + dev_err(ab->dev, "could not set pins to sleep state\n"); + + /* as USB pins are shared with idddet, release them to allow + * iddet to request them + */ + pinctrl_put(ab->pinctrl); + } } #define ab8500_usb_host_phy_en(ab) ab8500_usb_phy_enable(ab, true) |