From: Sean Paul <seanpaul@chromium.org>
Date: Fri, 9 Mar 2018 23:22:53 +0100
Subject: drm/rockchip: Remove analogix psr worker
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Git-commit: baa2f0240144c28502c09902f6a116138a354561
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Now that the spinlocks and timers are gone, we can remove the psr
worker located in rockchip's analogix driver and do the enable/disable
directly. This should simplify the code and remove races on disable.
Cc: 征增 王 <wzz@rock-chips.com>
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180309222327.18689-3-enric.balletbo@collabora.com
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 31 +-----------------------
1 file changed, 2 insertions(+), 29 deletions(-)
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -71,10 +71,6 @@ struct rockchip_dp_device {
struct regmap *grf;
struct reset_control *rst;
- struct work_struct psr_work;
- struct mutex psr_lock;
- unsigned int psr_state;
-
const struct rockchip_dp_chip_data *data;
struct analogix_dp_device *adp;
@@ -84,28 +80,13 @@ struct rockchip_dp_device {
static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
{
struct rockchip_dp_device *dp = to_dp(encoder);
+ int ret;
if (!analogix_dp_psr_supported(dp->adp))
return;
DRM_DEV_DEBUG(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit");
- mutex_lock(&dp->psr_lock);
- if (enabled)
- dp->psr_state = EDP_VSC_PSR_STATE_ACTIVE;
- else
- dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
-
- schedule_work(&dp->psr_work);
- mutex_unlock(&dp->psr_lock);
-}
-
-static void analogix_dp_psr_work(struct work_struct *work)
-{
- struct rockchip_dp_device *dp =
- container_of(work, typeof(*dp), psr_work);
- int ret;
-
ret = rockchip_drm_wait_vact_end(dp->encoder.crtc,
PSR_WAIT_LINE_FLAG_TIMEOUT_MS);
if (ret) {
@@ -113,12 +94,10 @@ static void analogix_dp_psr_work(struct
return;
}
- mutex_lock(&dp->psr_lock);
- if (dp->psr_state == EDP_VSC_PSR_STATE_ACTIVE)
+ if (enabled)
analogix_dp_enable_psr(dp->adp);
else
analogix_dp_disable_psr(dp->adp);
- mutex_unlock(&dp->psr_lock);
}
static int rockchip_dp_pre_init(struct rockchip_dp_device *dp)
@@ -135,8 +114,6 @@ static int rockchip_dp_poweron(struct an
struct rockchip_dp_device *dp = to_dp(plat_data);
int ret;
- cancel_work_sync(&dp->psr_work);
-
ret = clk_prepare_enable(dp->pclk);
if (ret < 0) {
DRM_DEV_ERROR(dp->dev, "failed to enable pclk %d\n", ret);
@@ -355,10 +332,6 @@ static int rockchip_dp_bind(struct devic
dp->plat_data.power_off = rockchip_dp_powerdown;
dp->plat_data.get_modes = rockchip_dp_get_modes;
- mutex_init(&dp->psr_lock);
- dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
- INIT_WORK(&dp->psr_work, analogix_dp_psr_work);
-
ret = rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
if (ret < 0)
goto err_cleanup_encoder;