From: Madhav Chauhan <madhav.chau...@intel.com>
This patch read out the current hw state for DSI and
return true if encoder is active.
v2 by Jani:
- Squash connector get hw state hook here
- Squash encode get hw state fix here
v3 by Jani:
- Add encoder->get_power_domains() (Imre)
v4 by Jani:
- Make encoder->get_power_domains() sensible... (Imre)
Cc: Imre Deak <imre.d...@intel.com>
Signed-off-by: Madhav Chauhan <madhav.chau...@intel.com>
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
---
drivers/gpu/drm/i915/icl_dsi.c | 57 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 57 insertions(+)
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
index b47e837f4493..1881825432cb 100644
--- a/drivers/gpu/drm/i915/icl_dsi.c
+++ b/drivers/gpu/drm/i915/icl_dsi.c
@@ -1068,6 +1068,60 @@ static void gen11_dsi_get_config(struct intel_encoder
*encoder,
pipe_config->port_clock = pixel_clk;
}
+static u64 gen11_dsi_get_power_domains(struct intel_encoder *encoder,
+ struct intel_crtc_state *crtc_state)
+{
+ struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+ u64 domains = 0;
+ enum port port;
+
+ for_each_dsi_port(port, intel_dsi->ports)
+ domains |= (port == PORT_A ? POWER_DOMAIN_PORT_DDI_A_IO :
+ POWER_DOMAIN_PORT_DDI_B_IO);
+
+ return domains;
+}
+
+static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder,
+ enum pipe *pipe)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+ u32 tmp;
+ enum port port;
+ enum transcoder dsi_trans;
+ bool ret = false;
+
+ if (!intel_display_power_get_if_enabled(dev_priv,
+ encoder->power_domain))
+ return false;
+
+ for_each_dsi_port(port, intel_dsi->ports) {
+ dsi_trans = dsi_port_to_transcoder(port);
+ tmp = I915_READ(TRANS_DDI_FUNC_CTL(dsi_trans));
+ switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
+ case TRANS_DDI_EDP_INPUT_A_ON:
+ *pipe = PIPE_A;
+ break;
+ case TRANS_DDI_EDP_INPUT_B_ONOFF:
+ *pipe = PIPE_B;
+ break;
+ case TRANS_DDI_EDP_INPUT_C_ONOFF:
+ *pipe = PIPE_C;
+ break;
+ default:
+ DRM_ERROR("Invalid PIPE input\n");
+ goto out;
+ }
+
+ tmp = I915_READ(PIPECONF(dsi_trans));
+ ret = tmp & PIPECONF_ENABLE;
+ }
+out:
+ intel_display_power_put(dev_priv, encoder->power_domain);
+ return ret;
+}
+
static void gen11_dsi_encoder_destroy(struct drm_encoder *encoder)
{
intel_encoder_destroy(encoder);
@@ -1181,10 +1235,12 @@ 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->get_hw_state = gen11_dsi_get_hw_state;
encoder->type = INTEL_OUTPUT_DSI;
encoder->cloneable = 0;
encoder->crtc_mask = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C);
encoder->power_domain = POWER_DOMAIN_PORT_DSI;
+ encoder->get_power_domains = gen11_dsi_get_power_domains;
/* register DSI connector with DRM subsystem */
drm_connector_init(dev, connector, &gen11_dsi_connector_funcs,
@@ -1193,6 +1249,7 @@ void icl_dsi_init(struct drm_i915_private *dev_priv)
connector->display_info.subpixel_order = SubPixelHorizontalRGB;
connector->interlace_allowed = false;
connector->doublescan_allowed = false;
+ intel_connector->get_hw_state = intel_connector_get_hw_state;
/* attach connector to encoder */
intel_connector_attach_encoder(intel_connector, encoder);
--
2.11.0
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