diff options
| author | Neil Armstrong <narmstrong@baylibre.com> | 2020-03-30 11:27:24 +0200 |
|---|---|---|
| committer | Neil Armstrong <narmstrong@baylibre.com> | 2020-04-20 14:19:10 +0200 |
| commit | 838c0af9d25daa6f783acf0091deca0512baf0df (patch) | |
| tree | 4c2efbd15f42f13832e62e6c64abbc854ffddcd8 /drivers/phy/meson-gxl-usb2.c | |
| parent | c2b9aa98bf44e9537222c5c8d6ea365d5220f2e4 (diff) | |
phy: meson-gxl-usb: add set_mode call to force switch to peripheral mode
Add set_mode function in the Amlogic GXL PHYs that will be called by
the arch code to switch PHYs from/to gadget mode.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Diffstat (limited to 'drivers/phy/meson-gxl-usb2.c')
| -rw-r--r-- | drivers/phy/meson-gxl-usb2.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/drivers/phy/meson-gxl-usb2.c b/drivers/phy/meson-gxl-usb2.c index c98d12b627..b4f4c3c76b 100644 --- a/drivers/phy/meson-gxl-usb2.c +++ b/drivers/phy/meson-gxl-usb2.c @@ -17,6 +17,9 @@ #include <regmap.h> #include <power/regulator.h> #include <clk.h> +#include <linux/usb/otg.h> + +#include <asm/arch/usb-gx.h> #include <linux/bitops.h> #include <linux/compat.h> @@ -121,15 +124,30 @@ static void phy_meson_gxl_usb2_reset(struct phy_meson_gxl_usb2_priv *priv) udelay(RESET_COMPLETE_TIME); } -static void -phy_meson_gxl_usb2_set_host_mode(struct phy_meson_gxl_usb2_priv *priv) +void phy_meson_gxl_usb2_set_mode(struct phy *phy, enum usb_dr_mode mode) { + struct udevice *dev = phy->dev; + struct phy_meson_gxl_usb2_priv *priv = dev_get_priv(dev); uint val; regmap_read(priv->regmap, U2P_R0, &val); - val |= U2P_R0_DM_PULLDOWN; - val |= U2P_R0_DP_PULLDOWN; - val &= ~U2P_R0_ID_PULLUP; + + switch (mode) { + case USB_DR_MODE_UNKNOWN: + case USB_DR_MODE_HOST: + case USB_DR_MODE_OTG: + val |= U2P_R0_DM_PULLDOWN; + val |= U2P_R0_DP_PULLDOWN; + val &= ~U2P_R0_ID_PULLUP; + break; + + case USB_DR_MODE_PERIPHERAL: + val &= ~U2P_R0_DM_PULLDOWN; + val &= ~U2P_R0_DP_PULLDOWN; + val |= U2P_R0_ID_PULLUP; + break; + } + regmap_write(priv->regmap, U2P_R0, val); phy_meson_gxl_usb2_reset(priv); @@ -146,7 +164,7 @@ static int phy_meson_gxl_usb2_power_on(struct phy *phy) val &= ~U2P_R0_POWER_ON_RESET; regmap_write(priv->regmap, U2P_R0, val); - phy_meson_gxl_usb2_set_host_mode(priv); + phy_meson_gxl_usb2_set_mode(phy, USB_DR_MODE_HOST); #if CONFIG_IS_ENABLED(DM_REGULATOR) if (priv->phy_supply) { |