mirror of https://gitee.com/openkylin/linux.git
drm/bridge/synopsys: dsi: use adjusted_mode in mode_set
The "adjusted_mode" clock value (ie the real pixel clock) is more accurate than "mode" clock value (ie the panel/bridge requested clock value). It offers a better preciseness for timing computations and allows to reduce the extra dsi bandwidth in burst mode (from ~20% to ~10-12%, hw platform dependent). Signed-off-by: Philippe Cornu <philippe.cornu@st.com> Tested-by: Brian Norris <briannorris@chromium.org> Reviewed-by: Yannick Fertré <yannick.fertre@st.com> Tested-by: Yannick Fertré <yannick.fertre@st.com> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180125155504.8611-1-philippe.cornu@st.com
This commit is contained in:
parent
664991010f
commit
741c3aeb82
|
@ -771,20 +771,20 @@ static void dw_mipi_dsi_bridge_mode_set(struct drm_bridge *bridge,
|
||||||
|
|
||||||
clk_prepare_enable(dsi->pclk);
|
clk_prepare_enable(dsi->pclk);
|
||||||
|
|
||||||
ret = phy_ops->get_lane_mbps(priv_data, mode, dsi->mode_flags,
|
ret = phy_ops->get_lane_mbps(priv_data, adjusted_mode, dsi->mode_flags,
|
||||||
dsi->lanes, dsi->format, &dsi->lane_mbps);
|
dsi->lanes, dsi->format, &dsi->lane_mbps);
|
||||||
if (ret)
|
if (ret)
|
||||||
DRM_DEBUG_DRIVER("Phy get_lane_mbps() failed\n");
|
DRM_DEBUG_DRIVER("Phy get_lane_mbps() failed\n");
|
||||||
|
|
||||||
pm_runtime_get_sync(dsi->dev);
|
pm_runtime_get_sync(dsi->dev);
|
||||||
dw_mipi_dsi_init(dsi);
|
dw_mipi_dsi_init(dsi);
|
||||||
dw_mipi_dsi_dpi_config(dsi, mode);
|
dw_mipi_dsi_dpi_config(dsi, adjusted_mode);
|
||||||
dw_mipi_dsi_packet_handler_config(dsi);
|
dw_mipi_dsi_packet_handler_config(dsi);
|
||||||
dw_mipi_dsi_video_mode_config(dsi);
|
dw_mipi_dsi_video_mode_config(dsi);
|
||||||
dw_mipi_dsi_video_packet_config(dsi, mode);
|
dw_mipi_dsi_video_packet_config(dsi, adjusted_mode);
|
||||||
dw_mipi_dsi_command_mode_config(dsi);
|
dw_mipi_dsi_command_mode_config(dsi);
|
||||||
dw_mipi_dsi_line_timer_config(dsi, mode);
|
dw_mipi_dsi_line_timer_config(dsi, adjusted_mode);
|
||||||
dw_mipi_dsi_vertical_timing_config(dsi, mode);
|
dw_mipi_dsi_vertical_timing_config(dsi, adjusted_mode);
|
||||||
|
|
||||||
dw_mipi_dsi_dphy_init(dsi);
|
dw_mipi_dsi_dphy_init(dsi);
|
||||||
dw_mipi_dsi_dphy_timing_config(dsi);
|
dw_mipi_dsi_dphy_timing_config(dsi);
|
||||||
|
@ -798,7 +798,7 @@ static void dw_mipi_dsi_bridge_mode_set(struct drm_bridge *bridge,
|
||||||
|
|
||||||
dw_mipi_dsi_dphy_enable(dsi);
|
dw_mipi_dsi_dphy_enable(dsi);
|
||||||
|
|
||||||
dw_mipi_dsi_wait_for_two_frames(mode);
|
dw_mipi_dsi_wait_for_two_frames(adjusted_mode);
|
||||||
|
|
||||||
/* Switch to cmd mode for panel-bridge pre_enable & panel prepare */
|
/* Switch to cmd mode for panel-bridge pre_enable & panel prepare */
|
||||||
dw_mipi_dsi_set_mode(dsi, 0);
|
dw_mipi_dsi_set_mode(dsi, 0);
|
||||||
|
|
Loading…
Reference in New Issue