drm/bridge: analogix_dp: Don't use ANALOGIX_DP_PLL_CTL to control pll

There is no register named ANALOGIX_DP_PLL_CTL in Rockchip edp phy reg
list.  We should use BIT_4 in ANALOGIX_DP_PD to control the pll power
instead of ANALOGIX_DP_PLL_CTL.

Cc: Douglas Anderson <dianders@chromium.org>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180423105003.9004-15-enric.balletbo@collabora.com

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index 7b7fd22..02ab1aa 100644 (file)
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -230,16 +230,20 @@ enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp)
 void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable)
 {
        u32 reg;
+       u32 mask = DP_PLL_PD;
+       u32 pd_addr = ANALOGIX_DP_PLL_CTL;
 
-       if (enable) {
-               reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
-               reg |= DP_PLL_PD;
-               writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
-       } else {
-               reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
-               reg &= ~DP_PLL_PD;
-               writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
+       if (dp->plat_data && is_rockchip(dp->plat_data->dev_type)) {
+               pd_addr = ANALOGIX_DP_PD;
+               mask = RK_PLL_PD;
        }
+
+       reg = readl(dp->reg_base + pd_addr);
+       if (enable)
+               reg |= mask;
+       else
+               reg &= ~mask;
+       writel(reg, dp->reg_base + pd_addr);
 }
 
 void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,