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| author | Chris Brandt <chris.brandt@renesas.com> | 2025-05-21 17:03:35 -0400 |
|---|---|---|
| committer | Biju Das <biju.das.jz@bp.renesas.com> | 2025-05-24 08:34:26 +0100 |
| commit | 5ce16c169a4cb8ffceabfd48853d0bf605ce785a (patch) | |
| tree | 8e5265c4f6fe1c21b4f7adc72e66433377fcb63f /drivers/gpu | |
| parent | 9e0f93f7af569c6aee53eedac2c4161ea9d50169 (diff) | |
| download | linux-5ce16c169a4cb8ffceabfd48853d0bf605ce785a.tar.gz linux-5ce16c169a4cb8ffceabfd48853d0bf605ce785a.zip | |
drm: renesas: rz-du: Add atomic_pre_enable
When drm_panel.prepare_prev_first is set to true in a panel driver, the
panel expects the MIPI DSI hardware to be already configured before the
panel's prepare function is called because it might need to send DCS
commands.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Tested-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20250521210335.3149065-1-chris.brandt@renesas.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c index 8ba0dde8d482..91e1a9adad7d 100644 --- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c @@ -532,8 +532,8 @@ static int rzg2l_mipi_dsi_attach(struct drm_bridge *bridge, flags); } -static void rzg2l_mipi_dsi_atomic_enable(struct drm_bridge *bridge, - struct drm_atomic_state *state) +static void rzg2l_mipi_dsi_atomic_pre_enable(struct drm_bridge *bridge, + struct drm_atomic_state *state) { struct rzg2l_mipi_dsi *dsi = bridge_to_rzg2l_mipi_dsi(bridge); const struct drm_display_mode *mode; @@ -550,6 +550,13 @@ static void rzg2l_mipi_dsi_atomic_enable(struct drm_bridge *bridge, return; rzg2l_mipi_dsi_set_display_timing(dsi, mode); +} + +static void rzg2l_mipi_dsi_atomic_enable(struct drm_bridge *bridge, + struct drm_atomic_state *state) +{ + struct rzg2l_mipi_dsi *dsi = bridge_to_rzg2l_mipi_dsi(bridge); + int ret; ret = rzg2l_mipi_dsi_start_hs_clock(dsi); if (ret < 0) @@ -593,6 +600,7 @@ static const struct drm_bridge_funcs rzg2l_mipi_dsi_bridge_ops = { .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, .atomic_reset = drm_atomic_helper_bridge_reset, + .atomic_pre_enable = rzg2l_mipi_dsi_atomic_pre_enable, .atomic_enable = rzg2l_mipi_dsi_atomic_enable, .atomic_disable = rzg2l_mipi_dsi_atomic_disable, .mode_valid = rzg2l_mipi_dsi_bridge_mode_valid, |