From: Madhav Chauhan <madhav.chauhan@xxxxxxxxx>
This patch implements compute config for Gen11 DSI encoder which is
required at the time of modeset.
For DSI 8X clock is AFE clock which is 5 times port clock.
v2 by Jani:
- drop the enable nop hook
- fixed_mode is always true
- HAS_GMCH_DISPLAY() is always false
v3 by Jani:
- set encoder->compute_config dropped during rebase
v4 by Jani:
- squash Vandita's port clock patch
- remove todo comment
Co-developed-by: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>
Signed-off-by: Madhav Chauhan <madhav.chauhan@xxxxxxxxx>
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/icl_dsi.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
index 12e907b00bb9..f935008ff960 100644
--- a/drivers/gpu/drm/i915/icl_dsi.c
+++ b/drivers/gpu/drm/i915/icl_dsi.c
@@ -1074,6 +1074,36 @@ static void gen11_dsi_get_config(struct intel_encoder *encoder,
pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI);
}
+static bool gen11_dsi_compute_config(struct intel_encoder *encoder,
+ struct intel_crtc_state *pipe_config,
+ struct drm_connector_state *conn_state)
+{
+ struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi,
+ base);
+ struct intel_connector *intel_connector = intel_dsi->attached_connector;
+ struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc);
+ const struct drm_display_mode *fixed_mode =
+ intel_connector->panel.fixed_mode;
+ struct drm_display_mode *adjusted_mode =
+ &pipe_config->base.adjusted_mode;
+
+ intel_fixed_panel_mode(fixed_mode, adjusted_mode);
+ intel_pch_panel_fitting(crtc, pipe_config, conn_state->scaling_mode);
+
+ adjusted_mode->flags = 0;
+
+ /* Dual link goes to trancoder DSI'0' */
+ if (intel_dsi->ports == BIT(PORT_B))
+ pipe_config->cpu_transcoder = TRANSCODER_DSI_1;
+ else
+ pipe_config->cpu_transcoder = TRANSCODER_DSI_0;
+
+ pipe_config->clock_set = true;
+ pipe_config->port_clock = intel_dsi_bitrate(intel_dsi) / 5;
+
+ return true;
+}
+
static u64 gen11_dsi_get_power_domains(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state)
{
@@ -1244,6 +1274,7 @@ void icl_dsi_init(struct drm_i915_private *dev_priv)
encoder->disable = gen11_dsi_disable;
encoder->port = port;
encoder->get_config = gen11_dsi_get_config;
+ encoder->compute_config = gen11_dsi_compute_config;
encoder->get_hw_state = gen11_dsi_get_hw_state;
encoder->type = INTEL_OUTPUT_DSI;
encoder->cloneable = 0;
--
2.11.0
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