From: zain wang <wzz@rock-chips.com>
Date: Mon, 23 Apr 2018 12:49:52 +0200
Subject: drm/bridge: analogix_dp: Fix incorrect operations with register
ANALOGIX_DP_FUNC_EN_1
Git-commit: 4805b7ce5031381e8fe9f25b0f5a323653259178
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Register ANALOGIX_DP_FUNC_EN_1(offset 0x18), Rockchip is different to
Exynos:
on Exynos edp phy,
BIT 7 MASTER_VID_FUNC_EN_N
BIT 6 reserved
BIT 5 SLAVE_VID_FUNC_EN_N
on Rockchip edp phy,
BIT 7 reserved
BIT 6 RK_VID_CAP_FUNC_EN_N
BIT 5 RK_VID_FIFO_FUNC_EN_N
So, we should do some private operations to Rockchip.
Cc: Tomasz Figa <tfiga@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/20180423105003.9004-17-enric.balletbo@collabora.com
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 19 ++++++++++++++-----
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h | 2 ++
2 files changed, 16 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -126,9 +126,14 @@ void analogix_dp_reset(struct analogix_d
analogix_dp_stop_video(dp);
analogix_dp_enable_video_mute(dp, 0);
- reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
- AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N |
- HDCP_FUNC_EN_N | SW_FUNC_EN_N;
+ if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
+ reg = RK_VID_CAP_FUNC_EN_N | RK_VID_FIFO_FUNC_EN_N |
+ SW_FUNC_EN_N;
+ else
+ reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
+ AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N |
+ HDCP_FUNC_EN_N | SW_FUNC_EN_N;
+
writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
reg = SSC_FUNC_EN_N | AUX_FUNC_EN_N |
@@ -971,8 +976,12 @@ void analogix_dp_config_video_slave_mode
u32 reg;
reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
- reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
- reg |= MASTER_VID_FUNC_EN_N;
+ if (dp->plat_data && is_rockchip(dp->plat_data->dev_type)) {
+ reg &= ~(RK_VID_CAP_FUNC_EN_N | RK_VID_FIFO_FUNC_EN_N);
+ } else {
+ reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
+ reg |= MASTER_VID_FUNC_EN_N;
+ }
writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
@@ -127,7 +127,9 @@
/* ANALOGIX_DP_FUNC_EN_1 */
#define MASTER_VID_FUNC_EN_N (0x1 << 7)
+#define RK_VID_CAP_FUNC_EN_N (0x1 << 6)
#define SLAVE_VID_FUNC_EN_N (0x1 << 5)
+#define RK_VID_FIFO_FUNC_EN_N (0x1 << 5)
#define AUD_FIFO_FUNC_EN_N (0x1 << 4)
#define AUD_FUNC_EN_N (0x1 << 3)
#define HDCP_FUNC_EN_N (0x1 << 2)