diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/phy/amlogic/phy-meson-gxl-usb2.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c index d68c30d3b510..a92a3fd51e16 100644 --- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c +++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c @@ -11,11 +11,13 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <linux/clk.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/regmap.h> +#include <linux/reset.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/usb/of.h> @@ -99,6 +101,8 @@ struct phy_meson_gxl_usb2_priv { struct regmap *regmap; enum phy_mode mode; int is_enabled; + struct clk *clk; + struct reset_control *reset; }; static const struct regmap_config phy_meson_gxl_usb2_regmap_conf = { @@ -108,6 +112,31 @@ static const struct regmap_config phy_meson_gxl_usb2_regmap_conf = { .max_register = U2P_R3, }; +static int phy_meson_gxl_usb2_init(struct phy *phy) +{ + struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy); + int ret; + + ret = reset_control_reset(priv->reset); + if (ret) + return ret; + + ret = clk_prepare_enable(priv->clk); + if (ret) + return ret; + + return 0; +} + +static int phy_meson_gxl_usb2_exit(struct phy *phy) +{ + struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy); + + clk_disable_unprepare(priv->clk); + + return 0; +} + static int phy_meson_gxl_usb2_reset(struct phy *phy) { struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy); @@ -195,6 +224,8 @@ static int phy_meson_gxl_usb2_power_on(struct phy *phy) } static const struct phy_ops phy_meson_gxl_usb2_ops = { + .init = phy_meson_gxl_usb2_init, + .exit = phy_meson_gxl_usb2_exit, .power_on = phy_meson_gxl_usb2_power_on, .power_off = phy_meson_gxl_usb2_power_off, .set_mode = phy_meson_gxl_usb2_set_mode, @@ -241,6 +272,19 @@ static int phy_meson_gxl_usb2_probe(struct platform_device *pdev) if (IS_ERR(priv->regmap)) return PTR_ERR(priv->regmap); + priv->clk = devm_clk_get(dev, "phy"); + if (IS_ERR(priv->clk)) { + ret = PTR_ERR(priv->clk); + if (ret == -ENOENT) + priv->clk = NULL; + else + return ret; + } + + priv->reset = devm_reset_control_get_optional_shared(dev, "phy"); + if (IS_ERR(priv->reset)) + return PTR_ERR(priv->reset); + phy = devm_phy_create(dev, NULL, &phy_meson_gxl_usb2_ops); if (IS_ERR(phy)) { ret = PTR_ERR(phy); |