This patch configures mode of operation for DSI
and enable DDI IO power by configuring power well.
v2: Use for_each_dsi_port() for power get (Jani N)
Signed-off-by: Madhav Chauhan <madhav.chau...@intel.com>
---
drivers/gpu/drm/i915/intel_dsi_new.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_dsi_new.c
b/drivers/gpu/drm/i915/intel_dsi_new.c
index a890b36..64f97c7 100644
--- a/drivers/gpu/drm/i915/intel_dsi_new.c
+++ b/drivers/gpu/drm/i915/intel_dsi_new.c
@@ -54,11 +54,34 @@ static void gen11_dsi_program_esc_clk_div(struct
intel_encoder *encoder)
}
}
+static void gen11_dsi_enable_io_power(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+ enum port port;
+ u32 tmp;
+
+ for_each_dsi_port(port, intel_dsi->ports) {
+ tmp = I915_READ(ICL_DSI_IO_MODECTL(port));
+ tmp |= COMBO_PHY_MODE_DSI;
+ I915_WRITE(ICL_DSI_IO_MODECTL(port), tmp);
+ }
+
+ for_each_dsi_port(port, intel_dsi->ports) {
+ intel_display_power_get(dev_priv, port == PORT_A ?
+ POWER_DOMAIN_PORT_DDI_A_IO :
+ POWER_DOMAIN_PORT_DDI_B_IO);
+ }
+}
+
static void __attribute__((unused))
gen11_dsi_pre_enable(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
+ /* step2: enable IO power */
+ gen11_dsi_enable_io_power(encoder);
+
/* step3: enable DSI PLL */
gen11_dsi_program_esc_clk_div(encoder);
}
--
2.7.4
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