These new physical operations are helpful to power_on/off the dsi wrapper. If the dsi wrapper is powered in video mode, the display controller (ltdc) register access will hang when DSI fifos are full.
Signed-off-by: Yannick Fertré <[email protected]> --- drivers/gpu/drm/stm/dw_mipi_dsi-stm.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c index 01db020..0ab32fe 100644 --- a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c +++ b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c @@ -210,10 +210,27 @@ static int dw_mipi_dsi_phy_init(void *priv_data) if (ret) DRM_DEBUG_DRIVER("!TIMEOUT! waiting PLL, let's continue\n"); + return 0; +} + +static void dw_mipi_dsi_phy_power_on(void *priv_data) +{ + struct dw_mipi_dsi_stm *dsi = priv_data; + + DRM_DEBUG_DRIVER("\n"); + /* Enable the DSI wrapper */ dsi_set(dsi, DSI_WCR, WCR_DSIEN); +} - return 0; +static void dw_mipi_dsi_phy_power_off(void *priv_data) +{ + struct dw_mipi_dsi_stm *dsi = priv_data; + + DRM_DEBUG_DRIVER("\n"); + + /* Disable the DSI wrapper */ + dsi_clear(dsi, DSI_WCR, WCR_DSIEN); } static int @@ -287,6 +304,8 @@ dw_mipi_dsi_get_lane_mbps(void *priv_data, const struct drm_display_mode *mode, static const struct dw_mipi_dsi_phy_ops dw_mipi_dsi_stm_phy_ops = { .init = dw_mipi_dsi_phy_init, + .power_on = dw_mipi_dsi_phy_power_on, + .power_off = dw_mipi_dsi_phy_power_off, .get_lane_mbps = dw_mipi_dsi_get_lane_mbps, }; -- 2.7.4 _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
