From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
The current code dealing with the clock routing for DDI encoders
is a maintenance nightmare. Let's start cleaning it up by allowing
the encoder to provide vfuncs for enablign/disabling the clock.
We leave them initially unimplemented, falling back to the old
if-else approach.
v2: Convert the FDI enable sequence
Reviewed-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx> #v2
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 29 +++++++++++++++----
drivers/gpu/drm/i915/display/intel_ddi.h | 4 +--
.../drm/i915/display/intel_display_types.h | 6 ++++
drivers/gpu/drm/i915/display/intel_fdi.c | 2 +-
4 files changed, 32 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index dbef228555a0..ebfbd68b8e82 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -1927,6 +1927,23 @@ static void intel_ddi_clk_disable(struct intel_encoder *encoder)
}
}
+void intel_ddi_enable_clock(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state)
+{
+ if (encoder->enable_clock)
+ encoder->enable_clock(encoder, crtc_state);
+ else
+ intel_ddi_clk_select(encoder, crtc_state);
+}
+
+static void intel_ddi_disable_clock(struct intel_encoder *encoder)
+{
+ if (encoder->disable_clock)
+ encoder->disable_clock(encoder);
+ else
+ intel_ddi_clk_disable(encoder);
+}
+
static void
icl_program_mg_dp_mode(struct intel_digital_port *dig_port,
const struct intel_crtc_state *crtc_state)
@@ -2171,7 +2188,7 @@ static void tgl_ddi_pre_enable_dp(struct intel_atomic_state *state,
* hsw_crtc_enable()->intel_enable_shared_dpll(). We need only
* configure the PLL to port mapping here.
*/
- intel_ddi_clk_select(encoder, crtc_state);
+ intel_ddi_enable_clock(encoder, crtc_state);
/* 5. If IO power is controlled through PWR_WELL_CTL, Enable IO Power */
if (!intel_phy_is_tc(dev_priv, phy) ||
@@ -2292,7 +2309,7 @@ static void hsw_ddi_pre_enable_dp(struct intel_atomic_state *state,
intel_pps_on(intel_dp);
- intel_ddi_clk_select(encoder, crtc_state);
+ intel_ddi_enable_clock(encoder, crtc_state);
if (!intel_phy_is_tc(dev_priv, phy) ||
dig_port->tc_mode != TC_PORT_TBT_ALT) {
@@ -2367,7 +2384,7 @@ static void intel_ddi_pre_enable_hdmi(struct intel_atomic_state *state,
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
- intel_ddi_clk_select(encoder, crtc_state);
+ intel_ddi_enable_clock(encoder, crtc_state);
drm_WARN_ON(&dev_priv->drm, dig_port->ddi_io_wakeref);
dig_port->ddi_io_wakeref = intel_display_power_get(dev_priv,
@@ -2519,7 +2536,7 @@ static void intel_ddi_post_disable_dp(struct intel_atomic_state *state,
dig_port->ddi_io_power_domain,
fetch_and_zero(&dig_port->ddi_io_wakeref));
- intel_ddi_clk_disable(encoder);
+ intel_ddi_disable_clock(encoder);
}
static void intel_ddi_post_disable_hdmi(struct intel_atomic_state *state,
@@ -2542,7 +2559,7 @@ static void intel_ddi_post_disable_hdmi(struct intel_atomic_state *state,
dig_port->ddi_io_power_domain,
fetch_and_zero(&dig_port->ddi_io_wakeref));
- intel_ddi_clk_disable(encoder);
+ intel_ddi_disable_clock(encoder);
intel_dp_dual_mode_set_tmds_output(intel_hdmi, false);
}
@@ -2642,7 +2659,7 @@ void intel_ddi_fdi_post_disable(struct intel_atomic_state *state,
intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val);
intel_disable_ddi_buf(encoder, old_crtc_state);
- intel_ddi_clk_disable(encoder);
+ intel_ddi_disable_clock(encoder);
val = intel_de_read(dev_priv, FDI_RX_MISC(PIPE_A));
val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.h b/drivers/gpu/drm/i915/display/intel_ddi.h
index e618e1c80252..1aa0eedbf342 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.h
+++ b/drivers/gpu/drm/i915/display/intel_ddi.h
@@ -28,8 +28,8 @@ void intel_ddi_fdi_post_disable(struct intel_atomic_state *state,
struct intel_encoder *intel_encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state);
-void intel_ddi_clk_select(struct intel_encoder *encoder,
- const struct intel_crtc_state *crtc_state);
+void intel_ddi_enable_clock(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state);
void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state);
void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 307ff4b771f4..3f00c328d188 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -219,6 +219,12 @@ struct intel_encoder {
* encoders have been disabled and suspended.
*/
void (*shutdown)(struct intel_encoder *encoder);
+ /*
+ * Enable/disable the clock to the port.
+ */
+ void (*enable_clock)(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state);
+ void (*disable_clock)(struct intel_encoder *encoder);
enum hpd_pin hpd_pin;
enum intel_display_power_domain power_domain;
/* for communication with audio component; protected by av_mutex */
diff --git a/drivers/gpu/drm/i915/display/intel_fdi.c b/drivers/gpu/drm/i915/display/intel_fdi.c
index dbd6be3342c0..60b29110099a 100644
--- a/drivers/gpu/drm/i915/display/intel_fdi.c
+++ b/drivers/gpu/drm/i915/display/intel_fdi.c
@@ -596,7 +596,7 @@ void hsw_fdi_link_train(struct intel_encoder *encoder,
/* Configure Port Clock Select */
drm_WARN_ON(&dev_priv->drm, crtc_state->shared_dpll->info->id != DPLL_ID_SPLL);
- intel_ddi_clk_select(encoder, crtc_state);
+ intel_ddi_enable_clock(encoder, crtc_state);
/* Start the training iterating through available voltages and emphasis,
* testing each value twice. */
--
2.26.2
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