diff options
| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2017-09-21 13:31:49 +0300 |
|---|---|---|
| committer | Kishon Vijay Abraham I <kishon@ti.com> | 2017-10-23 08:49:25 +0300 |
| commit | 5954a10e8e12ddffd54bfb6b3365aec2c31aa615 (patch) | |
| tree | 07314efbe1bdac4db6aa5a2ecdafe66dcb907d43 | |
| parent | 30dbc0415f7c6e6d4fa9cdc8098c27fd8cf74f82 (diff) | |
| download | linux-5954a10e8e12ddffd54bfb6b3365aec2c31aa615.tar.xz | |
phy: phy-mtk-tphy: add set_mode callback
This is used to force PHY with USB OTG function to enter a specific
mode, and override OTG IDPIN(or IDDIG) signal.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
| -rw-r--r-- | drivers/phy/mediatek/phy-mtk-tphy.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c index 721a2a1c97ef..402385f2562a 100644 --- a/drivers/phy/mediatek/phy-mtk-tphy.c +++ b/drivers/phy/mediatek/phy-mtk-tphy.c @@ -96,9 +96,11 @@ #define U3P_U2PHYDTM1 0x06C #define P2C_RG_UART_EN BIT(16) +#define P2C_FORCE_IDDIG BIT(9) #define P2C_RG_VBUSVALID BIT(5) #define P2C_RG_SESSEND BIT(4) #define P2C_RG_AVALID BIT(2) +#define P2C_RG_IDDIG BIT(1) #define U3P_U3_CHIP_GPIO_CTLD 0x0c #define P3C_REG_IP_SW_RST BIT(31) @@ -585,6 +587,31 @@ static void u2_phy_instance_exit(struct mtk_tphy *tphy, } } +static void u2_phy_instance_set_mode(struct mtk_tphy *tphy, + struct mtk_phy_instance *instance, + enum phy_mode mode) +{ + struct u2phy_banks *u2_banks = &instance->u2_banks; + u32 tmp; + + tmp = readl(u2_banks->com + U3P_U2PHYDTM1); + switch (mode) { + case PHY_MODE_USB_DEVICE: + tmp |= P2C_FORCE_IDDIG | P2C_RG_IDDIG; + break; + case PHY_MODE_USB_HOST: + tmp |= P2C_FORCE_IDDIG; + tmp &= ~P2C_RG_IDDIG; + break; + case PHY_MODE_USB_OTG: + tmp &= ~(P2C_FORCE_IDDIG | P2C_RG_IDDIG); + break; + default: + return; + } + writel(tmp, u2_banks->com + U3P_U2PHYDTM1); +} + static void pcie_phy_instance_init(struct mtk_tphy *tphy, struct mtk_phy_instance *instance) { @@ -881,6 +908,17 @@ static int mtk_phy_exit(struct phy *phy) return 0; } +static int mtk_phy_set_mode(struct phy *phy, enum phy_mode mode) +{ + struct mtk_phy_instance *instance = phy_get_drvdata(phy); + struct mtk_tphy *tphy = dev_get_drvdata(phy->dev.parent); + + if (instance->type == PHY_TYPE_USB2) + u2_phy_instance_set_mode(tphy, instance, mode); + + return 0; +} + static struct phy *mtk_phy_xlate(struct device *dev, struct of_phandle_args *args) { @@ -931,6 +969,7 @@ static const struct phy_ops mtk_tphy_ops = { .exit = mtk_phy_exit, .power_on = mtk_phy_power_on, .power_off = mtk_phy_power_off, + .set_mode = mtk_phy_set_mode, .owner = THIS_MODULE, }; |