drm/bridge: analogix_dp: Fix AUX_PD bit for Rockchip

There are some different bits between Rockchip and Exynos in register
"AUX_PD". This patch fixes the incorrect operations about it.

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/20180423105003.9004-12-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 bb72f8b..dee1ba1 100644 (file)
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -248,76 +248,85 @@ void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
 {
        u32 reg;
        u32 phy_pd_addr = ANALOGIX_DP_PHY_PD;
+       u32 mask;
 
        if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
                phy_pd_addr = ANALOGIX_DP_PD;
 
        switch (block) {
        case AUX_BLOCK:
-               if (enable) {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg |= AUX_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               } else {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg &= ~AUX_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               }
+               if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
+                       mask = RK_AUX_PD;
+               else
+                       mask = AUX_PD;
+
+               reg = readl(dp->reg_base + phy_pd_addr);
+               if (enable)
+                       reg |= mask;
+               else
+                       reg &= ~mask;
+               writel(reg, dp->reg_base + phy_pd_addr);
                break;
        case CH0_BLOCK:
-               if (enable) {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg |= CH0_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               } else {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg &= ~CH0_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               }
+               mask = CH0_PD;
+               reg = readl(dp->reg_base + phy_pd_addr);
+
+               if (enable)
+                       reg |= mask;
+               else
+                       reg &= ~mask;
+               writel(reg, dp->reg_base + phy_pd_addr);
                break;
        case CH1_BLOCK:
-               if (enable) {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg |= CH1_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               } else {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg &= ~CH1_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               }
+               mask = CH1_PD;
+               reg = readl(dp->reg_base + phy_pd_addr);
+
+               if (enable)
+                       reg |= mask;
+               else
+                       reg &= ~mask;
+               writel(reg, dp->reg_base + phy_pd_addr);
                break;
        case CH2_BLOCK:
-               if (enable) {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg |= CH2_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               } else {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg &= ~CH2_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               }
+               mask = CH2_PD;
+               reg = readl(dp->reg_base + phy_pd_addr);
+
+               if (enable)
+                       reg |= mask;
+               else
+                       reg &= ~mask;
+               writel(reg, dp->reg_base + phy_pd_addr);
                break;
        case CH3_BLOCK:
-               if (enable) {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg |= CH3_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               } else {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg &= ~CH3_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               }
+               mask = CH3_PD;
+               reg = readl(dp->reg_base + phy_pd_addr);
+
+               if (enable)
+                       reg |= mask;
+               else
+                       reg &= ~mask;
+               writel(reg, dp->reg_base + phy_pd_addr);
                break;
        case ANALOG_TOTAL:
-               if (enable) {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg |= DP_PHY_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               } else {
-                       reg = readl(dp->reg_base + phy_pd_addr);
-                       reg &= ~DP_PHY_PD;
-                       writel(reg, dp->reg_base + phy_pd_addr);
-               }
+               /*
+                * There is no bit named DP_PHY_PD, so We used DP_INC_BG
+                * to power off everything instead of DP_PHY_PD in
+                * Rockchip
+                */
+               if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
+                       mask = DP_INC_BG;
+               else
+                       mask = DP_PHY_PD;
+
+               reg = readl(dp->reg_base + phy_pd_addr);
+               if (enable)
+                       reg |= mask;
+               else
+                       reg &= ~mask;
+
+               writel(reg, dp->reg_base + phy_pd_addr);
+               if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
+                       usleep_range(10, 15);
                break;
        case POWER_ALL:
                if (enable) {

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
index 9602668..b633a4a 100644 (file)
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
@@ -345,7 +345,9 @@
 #define DP_INC_BG                              (0x1 << 7)
 #define DP_EXP_BG                              (0x1 << 6)
 #define DP_PHY_PD                              (0x1 << 5)
+#define RK_AUX_PD                              (0x1 << 5)
 #define AUX_PD                                 (0x1 << 4)
+#define RK_PLL_PD                              (0x1 << 4)
 #define CH3_PD                                 (0x1 << 3)
 #define CH2_PD                                 (0x1 << 2)
 #define CH1_PD                                 (0x1 << 1)