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drm/rockchip: analogix_dp: implement PSR function 

Alway enable the PSR function for Rockchip analogix_dp driver. If panel
don't support PSR, then the core analogix_dp would ignore this setting.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
hifive-unleashed-5.1
Yakir Yang 2016-07-24 14:57:52 +08:00 committed by Sean Paul
parent 5b3f84f222
commit 8f0ac5c483
1 changed files with 57 additions and 0 deletions
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57
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
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@ -32,6 +32,7 @@
#include <drm/bridge/analogix_dp.h>
#include "rockchip_drm_drv.h"
#include "rockchip_drm_psr.h"
#include "rockchip_drm_vop.h"
#define RK3288_GRF_SOC_CON6 0x25c
@ -41,6 +42,9 @@
#define HIWORD_UPDATE(val, mask) (val | (mask) << 16)
#define PSR_SET_DELAY_TIME msecs_to_jiffies(10)
#define PSR_WAIT_LINE_FLAG_TIMEOUT_MS 100
#define to_dp(nm) container_of(nm, struct rockchip_dp_device, nm)
/**
@ -68,11 +72,55 @@ struct rockchip_dp_device {
struct regmap *grf;
struct reset_control *rst;
struct delayed_work psr_work;
unsigned int psr_state;
const struct rockchip_dp_chip_data *data;
struct analogix_dp_plat_data plat_data;
};
static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
{
struct rockchip_dp_device *dp = to_dp(encoder);
dev_dbg(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit");
if (enabled)
dp->psr_state = EDP_VSC_PSR_STATE_ACTIVE;
else
dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
schedule_delayed_work(&dp->psr_work, PSR_SET_DELAY_TIME);
}
static void analogix_dp_psr_work(struct work_struct *work)
{
struct rockchip_dp_device *dp =
container_of(work, typeof(*dp), psr_work.work);
struct drm_crtc *crtc = dp->encoder.crtc;
int psr_state = dp->psr_state;
int vact_end;
int ret;
if (!crtc)
return;
vact_end = crtc->mode.vtotal - crtc->mode.vsync_start + crtc->mode.vdisplay;
ret = rockchip_drm_wait_line_flag(dp->encoder.crtc, vact_end,
PSR_WAIT_LINE_FLAG_TIMEOUT_MS);
if (ret) {
dev_err(dp->dev, "line flag interrupt did not arrive\n");
return;
}
if (psr_state == EDP_VSC_PSR_STATE_ACTIVE)
analogix_dp_enable_psr(dp->dev);
else
analogix_dp_disable_psr(dp->dev);
}
static int rockchip_dp_pre_init(struct rockchip_dp_device *dp)
{
reset_control_assert(dp->rst);
@ -342,12 +390,21 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
dp->plat_data.power_off = rockchip_dp_powerdown;
dp->plat_data.get_modes = rockchip_dp_get_modes;
dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
INIT_DELAYED_WORK(&dp->psr_work, analogix_dp_psr_work);
rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
}
static void rockchip_dp_unbind(struct device *dev, struct device *master,
void *data)
{
struct rockchip_dp_device *dp = dev_get_drvdata(dev);
rockchip_drm_psr_unregister(&dp->encoder);
return analogix_dp_unbind(dev, master, data);
}