diff options
| author | Dave Stevenson <dave.stevenson@raspberrypi.com> | 2022-12-07 13:22:45 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2022-12-15 10:57:16 +0300 |
| commit | c9a396cf6094dd83892c9932582b4b9801254daf (patch) | |
| tree | d2fcdb1b7af8b6a4c940120100336ade892b4b72 /drivers/gpu/drm/vc4/vc4_dsi.c | |
| parent | 9fc925805d1af8591a3cbbe0331d4d29edc12dc6 (diff) | |
| download | linux-c9a396cf6094dd83892c9932582b4b9801254daf.tar.xz | |
drm/vc4: dsi: Move initialisation to encoder_mode_set
Breaking the bridge chain does not work for atomic bridges/panels
and generally causes issues.
We need to initialise the DSI host before the bridge pre_enables
are called, so move that to encoder_mode_set in the same way that
dw-mipi-dsi does.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://lore.kernel.org/r/20221207-rpi-dsi-bridge-v1-2-8f68ee0b0adb@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_dsi.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c index e23ec25ddc2e..51c164cb2ef0 100644 --- a/drivers/gpu/drm/vc4/vc4_dsi.c +++ b/drivers/gpu/drm/vc4/vc4_dsi.c @@ -874,18 +874,18 @@ static bool vc4_dsi_encoder_mode_fixup(struct drm_encoder *encoder, return true; } -static void vc4_dsi_encoder_enable(struct drm_encoder *encoder) +static void vc4_dsi_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) { - struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode; struct vc4_dsi *dsi = to_vc4_dsi(encoder); struct device *dev = &dsi->pdev->dev; bool debug_dump_regs = false; - struct drm_bridge *iter; unsigned long hs_clock; u32 ui_ns; /* Minimum LP state duration in escape clock cycles. */ u32 lpx = dsi_esc_timing(60); - unsigned long pixel_clock_hz = mode->clock * 1000; + unsigned long pixel_clock_hz = adjusted_mode->clock * 1000; unsigned long dsip_clock; unsigned long phy_clock; int ret; @@ -1112,6 +1112,13 @@ static void vc4_dsi_encoder_enable(struct drm_encoder *encoder) ~DSI_PORT_BIT(PHY_AFEC0_RESET)); vc4_dsi_ulps(dsi, false); +} + +static void vc4_dsi_encoder_enable(struct drm_encoder *encoder) +{ + struct vc4_dsi *dsi = to_vc4_dsi(encoder); + bool debug_dump_regs = false; + struct drm_bridge *iter; list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) { if (iter->funcs->pre_enable) @@ -1377,6 +1384,7 @@ static const struct drm_encoder_helper_funcs vc4_dsi_encoder_helper_funcs = { .disable = vc4_dsi_encoder_disable, .enable = vc4_dsi_encoder_enable, .mode_fixup = vc4_dsi_encoder_mode_fixup, + .mode_set = vc4_dsi_encoder_mode_set, }; static int vc4_dsi_late_register(struct drm_encoder *encoder) |