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drm/rockchip: dsi2: add support support vrr by changing dclk in auto mode

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Auto-Calculation mode Allows IPI frames to change dynamically with the controller
adapting the output frames in vrr mode.

Signed-off-by: Guochun Huang <hero.huang@rock-chips.com>
Change-Id: Ibcdc520db4b5546ca5877eb02145a5fac7ab7a2c
This commit is contained in:
Guochun Huang
2025-02-12 12:29:32 +08:00
committed by Tao Huang
parent f70f311a71
commit 48ae954928
1 changed files with 25 additions and 1 deletions
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26
drivers/gpu/drm/rockchip/dw-mipi-dsi2-rockchip.c
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@@ -293,6 +293,9 @@ struct dw_mipi_dsi2 {
bool support_psr;
bool enabled;
unsigned int min_refresh_rate;
unsigned int max_refresh_rate;
};
static inline struct dw_mipi_dsi2 *host_to_dsi2(struct mipi_dsi_host *host)
@@ -1143,6 +1146,18 @@ dw_mipi_dsi2_encoder_atomic_check(struct drm_encoder *encoder,
s->color_encoding = DRM_COLOR_YCBCR_BT709;
s->color_range = DRM_COLOR_YCBCR_FULL_RANGE;
if (dsi2->auto_calc_mode && dsi2->max_refresh_rate && dsi2->min_refresh_rate) {
int refresh_rate;
refresh_rate = drm_mode_vrefresh(&crtc_state->adjusted_mode);
if (refresh_rate > dsi2->max_refresh_rate || refresh_rate < dsi2->min_refresh_rate)
return -EINVAL;
s->max_refresh_rate = dsi2->max_refresh_rate;
s->min_refresh_rate = dsi2->min_refresh_rate;
s->vrr_type = ROCKCHIP_VRR_DCLK_MODE;
}
if (dw_mipi_dsi2_is_cmd_mode(dsi2)) {
s->output_flags |= ROCKCHIP_OUTPUT_MIPI_DS_MODE;
s->soft_te = dsi2->te_gpio ? true : false;
@@ -1997,9 +2012,18 @@ static int dw_mipi_dsi2_probe(struct platform_device *pdev)
dsi2->pdata = of_device_get_match_data(dev);
platform_set_drvdata(pdev, dsi2);
if (device_property_read_bool(dev, "auto-calculation-mode"))
if (device_property_read_bool(dev, "auto-calculation-mode")) {
dsi2->auto_calc_mode = true;
device_property_read_u32(dev, "min-refresh-rate", &dsi2->min_refresh_rate);
device_property_read_u32(dev, "max-refresh-rate", &dsi2->max_refresh_rate);
if (dsi2->max_refresh_rate <= dsi2->min_refresh_rate) {
dsi2->min_refresh_rate = 0;
dsi2->max_refresh_rate = 0;
}
}
if (device_property_read_bool(dev, "disable-hold-mode"))
dsi2->disable_hold_mode = true;