[Intel-gfx] [PATCH v2 8/8] drm/i915: Constify states passed to enable/disable/etc. encoder hooks

ville.syrjala at linux.intel.com ville.syrjala at linux.intel.com
Fri May 19 13:17:25 UTC 2017


From: Ville Syrjälä <ville.syrjala at linux.intel.com>

The enable/disable/etc. encoder hooks aren't supposed to alter the
state(s), so pass them as const. Unfortunately C lacks any kind of deep
const thingy, so this can't catch all abuses. But at least it acts as a
hint to the reader telling them not to mess about with the state(s).

v2: Update intel_tv_mode_find() and ironlake_edp_pll_on() as well

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_crt.c    | 22 ++++++------
 drivers/gpu/drm/i915/intel_ddi.c    | 30 ++++++++--------
 drivers/gpu/drm/i915/intel_dp.c     | 64 ++++++++++++++++-----------------
 drivers/gpu/drm/i915/intel_dp_mst.c | 16 ++++-----
 drivers/gpu/drm/i915/intel_drv.h    | 32 ++++++++---------
 drivers/gpu/drm/i915/intel_dsi.c    | 22 ++++++------
 drivers/gpu/drm/i915/intel_dvo.c    | 12 +++----
 drivers/gpu/drm/i915/intel_hdmi.c   | 70 ++++++++++++++++++-------------------
 drivers/gpu/drm/i915/intel_lvds.c   | 24 ++++++-------
 drivers/gpu/drm/i915/intel_sdvo.c   | 24 ++++++-------
 drivers/gpu/drm/i915/intel_tv.c     | 14 ++++----
 11 files changed, 165 insertions(+), 165 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 84a1f5e85153..94b9a2eeb0b2 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -143,7 +143,7 @@ static void hsw_crt_get_config(struct intel_encoder *encoder,
 /* Note: The caller is required to filter out dpms modes not supported by the
  * platform. */
 static void intel_crt_set_dpms(struct intel_encoder *encoder,
-			       struct intel_crtc_state *crtc_state,
+			       const struct intel_crtc_state *crtc_state,
 			       int mode)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
@@ -194,28 +194,28 @@ static void intel_crt_set_dpms(struct intel_encoder *encoder,
 }
 
 static void intel_disable_crt(struct intel_encoder *encoder,
-			      struct intel_crtc_state *old_crtc_state,
-			      struct drm_connector_state *old_conn_state)
+			      const struct intel_crtc_state *old_crtc_state,
+			      const struct drm_connector_state *old_conn_state)
 {
 	intel_crt_set_dpms(encoder, old_crtc_state, DRM_MODE_DPMS_OFF);
 }
 
 static void pch_disable_crt(struct intel_encoder *encoder,
-			    struct intel_crtc_state *old_crtc_state,
-			    struct drm_connector_state *old_conn_state)
+			    const struct intel_crtc_state *old_crtc_state,
+			    const struct drm_connector_state *old_conn_state)
 {
 }
 
 static void pch_post_disable_crt(struct intel_encoder *encoder,
-				 struct intel_crtc_state *old_crtc_state,
-				 struct drm_connector_state *old_conn_state)
+				 const struct intel_crtc_state *old_crtc_state,
+				 const struct drm_connector_state *old_conn_state)
 {
 	intel_disable_crt(encoder, old_crtc_state, old_conn_state);
 }
 
 static void hsw_post_disable_crt(struct intel_encoder *encoder,
-				 struct intel_crtc_state *old_crtc_state,
-				 struct drm_connector_state *old_conn_state)
+				 const struct intel_crtc_state *old_crtc_state,
+				 const struct drm_connector_state *old_conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
@@ -228,8 +228,8 @@ static void hsw_post_disable_crt(struct intel_encoder *encoder,
 }
 
 static void intel_enable_crt(struct intel_encoder *encoder,
-			     struct intel_crtc_state *pipe_config,
-			     struct drm_connector_state *conn_state)
+			     const struct intel_crtc_state *pipe_config,
+			     const struct drm_connector_state *conn_state)
 {
 	intel_crt_set_dpms(encoder, pipe_config, DRM_MODE_DPMS_ON);
 }
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 6203c2da3daf..21aa5eab292c 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -644,7 +644,7 @@ static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
 	DRM_ERROR("Timeout waiting for DDI BUF %c idle bit\n", port_name(port));
 }
 
-static uint32_t hsw_pll_to_ddi_pll_sel(struct intel_shared_dpll *pll)
+static uint32_t hsw_pll_to_ddi_pll_sel(const struct intel_shared_dpll *pll)
 {
 	switch (pll->id) {
 	case DPLL_ID_WRPLL1:
@@ -1617,7 +1617,7 @@ uint32_t ddi_signal_levels(struct intel_dp *intel_dp)
 }
 
 static void intel_ddi_clk_select(struct intel_encoder *encoder,
-				 struct intel_shared_dpll *pll)
+				 const struct intel_shared_dpll *pll)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	enum port port = intel_ddi_get_encoder_port(encoder);
@@ -1676,7 +1676,7 @@ static void intel_ddi_pre_enable_hdmi(struct intel_encoder *encoder,
 				      bool has_infoframe,
 				      const struct intel_crtc_state *crtc_state,
 				      const struct drm_connector_state *conn_state,
-				      struct intel_shared_dpll *pll)
+				      const struct intel_shared_dpll *pll)
 {
 	struct intel_digital_port *intel_dig_port = enc_to_dig_port(&encoder->base);
 	struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
@@ -1703,8 +1703,8 @@ static void intel_ddi_pre_enable_hdmi(struct intel_encoder *encoder,
 }
 
 static void intel_ddi_pre_enable(struct intel_encoder *encoder,
-				 struct intel_crtc_state *pipe_config,
-				 struct drm_connector_state *conn_state)
+				 const struct intel_crtc_state *pipe_config,
+				 const struct drm_connector_state *conn_state)
 {
 	int type = encoder->type;
 
@@ -1725,8 +1725,8 @@ static void intel_ddi_pre_enable(struct intel_encoder *encoder,
 }
 
 static void intel_ddi_post_disable(struct intel_encoder *intel_encoder,
-				   struct intel_crtc_state *old_crtc_state,
-				   struct drm_connector_state *old_conn_state)
+				   const struct intel_crtc_state *old_crtc_state,
+				   const struct drm_connector_state *old_conn_state)
 {
 	struct drm_encoder *encoder = &intel_encoder->base;
 	struct drm_i915_private *dev_priv = to_i915(encoder->dev);
@@ -1782,8 +1782,8 @@ static void intel_ddi_post_disable(struct intel_encoder *intel_encoder,
 }
 
 void intel_ddi_fdi_post_disable(struct intel_encoder *encoder,
-				struct intel_crtc_state *old_crtc_state,
-				struct drm_connector_state *old_conn_state)
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	uint32_t val;
@@ -1815,8 +1815,8 @@ void intel_ddi_fdi_post_disable(struct intel_encoder *encoder,
 }
 
 static void intel_enable_ddi(struct intel_encoder *intel_encoder,
-			     struct intel_crtc_state *pipe_config,
-			     struct drm_connector_state *conn_state)
+			     const struct intel_crtc_state *pipe_config,
+			     const struct drm_connector_state *conn_state)
 {
 	struct drm_encoder *encoder = &intel_encoder->base;
 	struct drm_i915_private *dev_priv = to_i915(encoder->dev);
@@ -1856,8 +1856,8 @@ static void intel_enable_ddi(struct intel_encoder *intel_encoder,
 }
 
 static void intel_disable_ddi(struct intel_encoder *intel_encoder,
-			      struct intel_crtc_state *old_crtc_state,
-			      struct drm_connector_state *old_conn_state)
+			      const struct intel_crtc_state *old_crtc_state,
+			      const struct drm_connector_state *old_conn_state)
 {
 	struct drm_encoder *encoder = &intel_encoder->base;
 	int type = intel_encoder->type;
@@ -1881,8 +1881,8 @@ static void intel_disable_ddi(struct intel_encoder *intel_encoder,
 }
 
 static void bxt_ddi_pre_pll_enable(struct intel_encoder *encoder,
-				   struct intel_crtc_state *pipe_config,
-				   struct drm_connector_state *conn_state)
+				   const struct intel_crtc_state *pipe_config,
+				   const struct drm_connector_state *conn_state)
 {
 	uint8_t mask = pipe_config->lane_lat_optim_mask;
 
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 1784989ca478..2ba3340710a9 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1837,7 +1837,7 @@ void intel_dp_set_link_params(struct intel_dp *intel_dp,
 }
 
 static void intel_dp_prepare(struct intel_encoder *encoder,
-			     struct intel_crtc_state *pipe_config)
+			     const struct intel_crtc_state *pipe_config)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -2432,7 +2432,7 @@ static void assert_edp_pll(struct drm_i915_private *dev_priv, bool state)
 #define assert_edp_pll_disabled(d) assert_edp_pll((d), false)
 
 static void ironlake_edp_pll_on(struct intel_dp *intel_dp,
-				struct intel_crtc_state *pipe_config)
+				const struct intel_crtc_state *pipe_config)
 {
 	struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
@@ -2659,8 +2659,8 @@ static void intel_dp_get_config(struct intel_encoder *encoder,
 }
 
 static void intel_disable_dp(struct intel_encoder *encoder,
-			     struct intel_crtc_state *old_crtc_state,
-			     struct drm_connector_state *old_conn_state)
+			     const struct intel_crtc_state *old_crtc_state,
+			     const struct drm_connector_state *old_conn_state)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
@@ -2684,8 +2684,8 @@ static void intel_disable_dp(struct intel_encoder *encoder,
 }
 
 static void ilk_post_disable_dp(struct intel_encoder *encoder,
-				struct intel_crtc_state *old_crtc_state,
-				struct drm_connector_state *old_conn_state)
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 	enum port port = dp_to_dig_port(intel_dp)->port;
@@ -2698,8 +2698,8 @@ static void ilk_post_disable_dp(struct intel_encoder *encoder,
 }
 
 static void vlv_post_disable_dp(struct intel_encoder *encoder,
-				struct intel_crtc_state *old_crtc_state,
-				struct drm_connector_state *old_conn_state)
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 
@@ -2707,8 +2707,8 @@ static void vlv_post_disable_dp(struct intel_encoder *encoder,
 }
 
 static void chv_post_disable_dp(struct intel_encoder *encoder,
-				struct intel_crtc_state *old_crtc_state,
-				struct drm_connector_state *old_conn_state)
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 	struct drm_device *dev = encoder->base.dev;
@@ -2813,7 +2813,7 @@ _intel_dp_set_link_train(struct intel_dp *intel_dp,
 }
 
 static void intel_dp_enable_port(struct intel_dp *intel_dp,
-				 struct intel_crtc_state *old_crtc_state)
+				 const struct intel_crtc_state *old_crtc_state)
 {
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -2837,8 +2837,8 @@ static void intel_dp_enable_port(struct intel_dp *intel_dp,
 }
 
 static void intel_enable_dp(struct intel_encoder *encoder,
-			    struct intel_crtc_state *pipe_config,
-			    struct drm_connector_state *conn_state)
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_connector_state *conn_state)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 	struct drm_device *dev = encoder->base.dev;
@@ -2885,8 +2885,8 @@ static void intel_enable_dp(struct intel_encoder *encoder,
 }
 
 static void g4x_enable_dp(struct intel_encoder *encoder,
-			  struct intel_crtc_state *pipe_config,
-			  struct drm_connector_state *conn_state)
+			  const struct intel_crtc_state *pipe_config,
+			  const struct drm_connector_state *conn_state)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 
@@ -2895,8 +2895,8 @@ static void g4x_enable_dp(struct intel_encoder *encoder,
 }
 
 static void vlv_enable_dp(struct intel_encoder *encoder,
-			  struct intel_crtc_state *pipe_config,
-			  struct drm_connector_state *conn_state)
+			  const struct intel_crtc_state *pipe_config,
+			  const struct drm_connector_state *conn_state)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 
@@ -2905,8 +2905,8 @@ static void vlv_enable_dp(struct intel_encoder *encoder,
 }
 
 static void g4x_pre_enable_dp(struct intel_encoder *encoder,
-			      struct intel_crtc_state *pipe_config,
-			      struct drm_connector_state *conn_state)
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
 	enum port port = dp_to_dig_port(intel_dp)->port;
@@ -3028,8 +3028,8 @@ static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp)
 }
 
 static void vlv_pre_enable_dp(struct intel_encoder *encoder,
-			      struct intel_crtc_state *pipe_config,
-			      struct drm_connector_state *conn_state)
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
 {
 	vlv_phy_pre_encoder_enable(encoder);
 
@@ -3037,8 +3037,8 @@ static void vlv_pre_enable_dp(struct intel_encoder *encoder,
 }
 
 static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder,
-				  struct intel_crtc_state *pipe_config,
-				  struct drm_connector_state *conn_state)
+				  const struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state)
 {
 	intel_dp_prepare(encoder, pipe_config);
 
@@ -3046,8 +3046,8 @@ static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder,
 }
 
 static void chv_pre_enable_dp(struct intel_encoder *encoder,
-			      struct intel_crtc_state *pipe_config,
-			      struct drm_connector_state *conn_state)
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
 {
 	chv_phy_pre_encoder_enable(encoder);
 
@@ -3058,8 +3058,8 @@ static void chv_pre_enable_dp(struct intel_encoder *encoder,
 }
 
 static void chv_dp_pre_pll_enable(struct intel_encoder *encoder,
-				  struct intel_crtc_state *pipe_config,
-				  struct drm_connector_state *conn_state)
+				  const struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state)
 {
 	intel_dp_prepare(encoder, pipe_config);
 
@@ -3067,8 +3067,8 @@ static void chv_dp_pre_pll_enable(struct intel_encoder *encoder,
 }
 
 static void chv_dp_post_pll_disable(struct intel_encoder *encoder,
-				    struct intel_crtc_state *pipe_config,
-				    struct drm_connector_state *conn_state)
+				    const struct intel_crtc_state *pipe_config,
+				    const struct drm_connector_state *conn_state)
 {
 	chv_phy_post_pll_disable(encoder);
 }
@@ -5462,7 +5462,7 @@ static void intel_dp_pps_init(struct drm_device *dev,
  * The caller of this function needs to take a lock on dev_priv->drrs.
  */
 static void intel_dp_set_drrs_state(struct drm_i915_private *dev_priv,
-				    struct intel_crtc_state *crtc_state,
+				    const struct intel_crtc_state *crtc_state,
 				    int refresh_rate)
 {
 	struct intel_encoder *encoder;
@@ -5559,7 +5559,7 @@ static void intel_dp_set_drrs_state(struct drm_i915_private *dev_priv,
  * Initializes frontbuffer_bits and drrs.dp
  */
 void intel_edp_drrs_enable(struct intel_dp *intel_dp,
-			   struct intel_crtc_state *crtc_state)
+			   const struct intel_crtc_state *crtc_state)
 {
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -5590,7 +5590,7 @@ void intel_edp_drrs_enable(struct intel_dp *intel_dp,
  *
  */
 void intel_edp_drrs_disable(struct intel_dp *intel_dp,
-			    struct intel_crtc_state *old_crtc_state)
+			    const struct intel_crtc_state *old_crtc_state)
 {
 	struct drm_device *dev = intel_dp_to_dev(intel_dp);
 	struct drm_i915_private *dev_priv = to_i915(dev);
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index 68c788eb0b95..d507b5aebb63 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -119,8 +119,8 @@ static int intel_dp_mst_atomic_check(struct drm_connector *connector,
 }
 
 static void intel_mst_disable_dp(struct intel_encoder *encoder,
-				 struct intel_crtc_state *old_crtc_state,
-				 struct drm_connector_state *old_conn_state)
+				 const struct intel_crtc_state *old_crtc_state,
+				 const struct drm_connector_state *old_conn_state)
 {
 	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
 	struct intel_digital_port *intel_dig_port = intel_mst->primary;
@@ -142,8 +142,8 @@ static void intel_mst_disable_dp(struct intel_encoder *encoder,
 }
 
 static void intel_mst_post_disable_dp(struct intel_encoder *encoder,
-				      struct intel_crtc_state *old_crtc_state,
-				      struct drm_connector_state *old_conn_state)
+				      const struct intel_crtc_state *old_crtc_state,
+				      const struct drm_connector_state *old_conn_state)
 {
 	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
 	struct intel_digital_port *intel_dig_port = intel_mst->primary;
@@ -172,8 +172,8 @@ static void intel_mst_post_disable_dp(struct intel_encoder *encoder,
 }
 
 static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
-				    struct intel_crtc_state *pipe_config,
-				    struct drm_connector_state *conn_state)
+				    const struct intel_crtc_state *pipe_config,
+				    const struct drm_connector_state *conn_state)
 {
 	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
 	struct intel_digital_port *intel_dig_port = intel_mst->primary;
@@ -215,8 +215,8 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
 }
 
 static void intel_mst_enable_dp(struct intel_encoder *encoder,
-				struct intel_crtc_state *pipe_config,
-				struct drm_connector_state *conn_state)
+				const struct intel_crtc_state *pipe_config,
+				const struct drm_connector_state *conn_state)
 {
 	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
 	struct intel_digital_port *intel_dig_port = intel_mst->primary;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 534a5bfb273e..7d533cb02afe 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -220,23 +220,23 @@ struct intel_encoder {
 			       struct intel_crtc_state *,
 			       struct drm_connector_state *);
 	void (*pre_pll_enable)(struct intel_encoder *,
-			       struct intel_crtc_state *,
-			       struct drm_connector_state *);
+			       const struct intel_crtc_state *,
+			       const struct drm_connector_state *);
 	void (*pre_enable)(struct intel_encoder *,
-			   struct intel_crtc_state *,
-			   struct drm_connector_state *);
+			   const struct intel_crtc_state *,
+			   const struct drm_connector_state *);
 	void (*enable)(struct intel_encoder *,
-		       struct intel_crtc_state *,
-		       struct drm_connector_state *);
+		       const struct intel_crtc_state *,
+		       const struct drm_connector_state *);
 	void (*disable)(struct intel_encoder *,
-			struct intel_crtc_state *,
-			struct drm_connector_state *);
+			const struct intel_crtc_state *,
+			const struct drm_connector_state *);
 	void (*post_disable)(struct intel_encoder *,
-			     struct intel_crtc_state *,
-			     struct drm_connector_state *);
+			     const struct intel_crtc_state *,
+			     const struct drm_connector_state *);
 	void (*post_pll_disable)(struct intel_encoder *,
-				 struct intel_crtc_state *,
-				 struct drm_connector_state *);
+				 const struct intel_crtc_state *,
+				 const struct drm_connector_state *);
 	/* Read out the current hw state of this connector, returning true if
 	 * the encoder is active. If the encoder is enabled it also set the pipe
 	 * it is connected to in the pipe parameter. */
@@ -1270,8 +1270,8 @@ void intel_crt_reset(struct drm_encoder *encoder);
 
 /* intel_ddi.c */
 void intel_ddi_fdi_post_disable(struct intel_encoder *intel_encoder,
-				struct intel_crtc_state *old_crtc_state,
-				struct drm_connector_state *old_conn_state);
+				const struct intel_crtc_state *old_crtc_state,
+				const struct drm_connector_state *old_conn_state);
 void hsw_fdi_link_train(struct intel_crtc *crtc,
 			const struct intel_crtc_state *crtc_state);
 void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port);
@@ -1542,9 +1542,9 @@ void intel_power_sequencer_reset(struct drm_i915_private *dev_priv);
 uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes);
 void intel_plane_destroy(struct drm_plane *plane);
 void intel_edp_drrs_enable(struct intel_dp *intel_dp,
-			   struct intel_crtc_state *crtc_state);
+			   const struct intel_crtc_state *crtc_state);
 void intel_edp_drrs_disable(struct intel_dp *intel_dp,
-			   struct intel_crtc_state *crtc_state);
+			    const struct intel_crtc_state *crtc_state);
 void intel_edp_drrs_invalidate(struct drm_i915_private *dev_priv,
 			       unsigned int frontbuffer_bits);
 void intel_edp_drrs_flush(struct drm_i915_private *dev_priv,
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index fc0ef492252a..1d1579f5cb90 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -711,7 +711,7 @@ static void intel_dsi_port_disable(struct intel_encoder *encoder)
 }
 
 static void intel_dsi_prepare(struct intel_encoder *intel_encoder,
-			      struct intel_crtc_state *pipe_config);
+			      const struct intel_crtc_state *pipe_config);
 static void intel_dsi_unprepare(struct intel_encoder *encoder);
 
 static void intel_dsi_msleep(struct intel_dsi *intel_dsi, int msec)
@@ -763,8 +763,8 @@ static void intel_dsi_msleep(struct intel_dsi *intel_dsi, int msec)
  */
 
 static void intel_dsi_pre_enable(struct intel_encoder *encoder,
-				 struct intel_crtc_state *pipe_config,
-				 struct drm_connector_state *conn_state)
+				 const struct intel_crtc_state *pipe_config,
+				 const struct drm_connector_state *conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
@@ -844,8 +844,8 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder,
  * the pre_enable hook.
  */
 static void intel_dsi_enable_nop(struct intel_encoder *encoder,
-				 struct intel_crtc_state *pipe_config,
-				 struct drm_connector_state *conn_state)
+				 const struct intel_crtc_state *pipe_config,
+				 const struct drm_connector_state *conn_state)
 {
 	DRM_DEBUG_KMS("\n");
 }
@@ -855,8 +855,8 @@ static void intel_dsi_enable_nop(struct intel_encoder *encoder,
  * the post_disable hook.
  */
 static void intel_dsi_disable(struct intel_encoder *encoder,
-			      struct intel_crtc_state *old_crtc_state,
-			      struct drm_connector_state *old_conn_state)
+			      const struct intel_crtc_state *old_crtc_state,
+			      const struct drm_connector_state *old_conn_state)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
@@ -902,8 +902,8 @@ static void intel_dsi_clear_device_ready(struct intel_encoder *encoder)
 }
 
 static void intel_dsi_post_disable(struct intel_encoder *encoder,
-				   struct intel_crtc_state *pipe_config,
-				   struct drm_connector_state *conn_state)
+				   const struct intel_crtc_state *pipe_config,
+				   const struct drm_connector_state *conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
@@ -1043,7 +1043,7 @@ static bool intel_dsi_get_hw_state(struct intel_encoder *encoder,
 }
 
 static void bxt_dsi_get_pipe_config(struct intel_encoder *encoder,
-				 struct intel_crtc_state *pipe_config)
+				    struct intel_crtc_state *pipe_config)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -1347,7 +1347,7 @@ static u32 pixel_format_to_reg(enum mipi_dsi_pixel_format fmt)
 }
 
 static void intel_dsi_prepare(struct intel_encoder *intel_encoder,
-			      struct intel_crtc_state *pipe_config)
+			      const struct intel_crtc_state *pipe_config)
 {
 	struct drm_encoder *encoder = &intel_encoder->base;
 	struct drm_device *dev = encoder->dev;
diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
index c1544a53095d..47a5ab4e6fb3 100644
--- a/drivers/gpu/drm/i915/intel_dvo.c
+++ b/drivers/gpu/drm/i915/intel_dvo.c
@@ -175,8 +175,8 @@ static void intel_dvo_get_config(struct intel_encoder *encoder,
 }
 
 static void intel_disable_dvo(struct intel_encoder *encoder,
-			      struct intel_crtc_state *old_crtc_state,
-			      struct drm_connector_state *old_conn_state)
+			      const struct intel_crtc_state *old_crtc_state,
+			      const struct drm_connector_state *old_conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
@@ -189,8 +189,8 @@ static void intel_disable_dvo(struct intel_encoder *encoder,
 }
 
 static void intel_enable_dvo(struct intel_encoder *encoder,
-			     struct intel_crtc_state *pipe_config,
-			     struct drm_connector_state *conn_state)
+			     const struct intel_crtc_state *pipe_config,
+			     const struct drm_connector_state *conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
@@ -258,8 +258,8 @@ static bool intel_dvo_compute_config(struct intel_encoder *encoder,
 }
 
 static void intel_dvo_pre_enable(struct intel_encoder *encoder,
-				 struct intel_crtc_state *pipe_config,
-				 struct drm_connector_state *conn_state)
+				 const struct intel_crtc_state *pipe_config,
+				 const struct drm_connector_state *conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc);
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 47a9f7f98a62..cfa7061cb5ab 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -989,8 +989,8 @@ static void intel_hdmi_get_config(struct intel_encoder *encoder,
 }
 
 static void intel_enable_hdmi_audio(struct intel_encoder *encoder,
-				    struct intel_crtc_state *pipe_config,
-				    struct drm_connector_state *conn_state)
+				    const struct intel_crtc_state *pipe_config,
+				    const struct drm_connector_state *conn_state)
 {
 	struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc);
 
@@ -1001,8 +1001,8 @@ static void intel_enable_hdmi_audio(struct intel_encoder *encoder,
 }
 
 static void g4x_enable_hdmi(struct intel_encoder *encoder,
-			    struct intel_crtc_state *pipe_config,
-			    struct drm_connector_state *conn_state)
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_connector_state *conn_state)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -1023,8 +1023,8 @@ static void g4x_enable_hdmi(struct intel_encoder *encoder,
 }
 
 static void ibx_enable_hdmi(struct intel_encoder *encoder,
-			    struct intel_crtc_state *pipe_config,
-			    struct drm_connector_state *conn_state)
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_connector_state *conn_state)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -1073,8 +1073,8 @@ static void ibx_enable_hdmi(struct intel_encoder *encoder,
 }
 
 static void cpt_enable_hdmi(struct intel_encoder *encoder,
-			    struct intel_crtc_state *pipe_config,
-			    struct drm_connector_state *conn_state)
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_connector_state *conn_state)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -1128,14 +1128,14 @@ static void cpt_enable_hdmi(struct intel_encoder *encoder,
 }
 
 static void vlv_enable_hdmi(struct intel_encoder *encoder,
-			    struct intel_crtc_state *pipe_config,
-			    struct drm_connector_state *conn_state)
+			    const struct intel_crtc_state *pipe_config,
+			    const struct drm_connector_state *conn_state)
 {
 }
 
 static void intel_disable_hdmi(struct intel_encoder *encoder,
-			       struct intel_crtc_state *old_crtc_state,
-			       struct drm_connector_state *old_conn_state)
+			       const struct intel_crtc_state *old_crtc_state,
+			       const struct drm_connector_state *old_conn_state)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -1191,8 +1191,8 @@ static void intel_disable_hdmi(struct intel_encoder *encoder,
 }
 
 static void g4x_disable_hdmi(struct intel_encoder *encoder,
-			     struct intel_crtc_state *old_crtc_state,
-			     struct drm_connector_state *old_conn_state)
+			     const struct intel_crtc_state *old_crtc_state,
+			     const struct drm_connector_state *old_conn_state)
 {
 	if (old_crtc_state->has_audio)
 		intel_audio_codec_disable(encoder);
@@ -1201,16 +1201,16 @@ static void g4x_disable_hdmi(struct intel_encoder *encoder,
 }
 
 static void pch_disable_hdmi(struct intel_encoder *encoder,
-			     struct intel_crtc_state *old_crtc_state,
-			     struct drm_connector_state *old_conn_state)
+			     const struct intel_crtc_state *old_crtc_state,
+			     const struct drm_connector_state *old_conn_state)
 {
 	if (old_crtc_state->has_audio)
 		intel_audio_codec_disable(encoder);
 }
 
 static void pch_post_disable_hdmi(struct intel_encoder *encoder,
-				  struct intel_crtc_state *old_crtc_state,
-				  struct drm_connector_state *old_conn_state)
+				  const struct intel_crtc_state *old_crtc_state,
+				  const struct drm_connector_state *old_conn_state)
 {
 	intel_disable_hdmi(encoder, old_crtc_state, old_conn_state);
 }
@@ -1308,7 +1308,7 @@ intel_hdmi_mode_valid(struct drm_connector *connector,
 	return status;
 }
 
-static bool hdmi_12bpc_possible(struct intel_crtc_state *crtc_state)
+static bool hdmi_12bpc_possible(const struct intel_crtc_state *crtc_state)
 {
 	struct drm_i915_private *dev_priv =
 		to_i915(crtc_state->base.crtc->dev);
@@ -1678,8 +1678,8 @@ intel_hdmi_set_property(struct drm_connector *connector,
 }
 
 static void intel_hdmi_pre_enable(struct intel_encoder *encoder,
-				  struct intel_crtc_state *pipe_config,
-				  struct drm_connector_state *conn_state)
+				  const struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state)
 {
 	struct intel_digital_port *intel_dig_port =
 		enc_to_dig_port(&encoder->base);
@@ -1692,8 +1692,8 @@ static void intel_hdmi_pre_enable(struct intel_encoder *encoder,
 }
 
 static void vlv_hdmi_pre_enable(struct intel_encoder *encoder,
-				struct intel_crtc_state *pipe_config,
-				struct drm_connector_state *conn_state)
+				const struct intel_crtc_state *pipe_config,
+				const struct drm_connector_state *conn_state)
 {
 	struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
 	struct drm_device *dev = encoder->base.dev;
@@ -1715,8 +1715,8 @@ static void vlv_hdmi_pre_enable(struct intel_encoder *encoder,
 }
 
 static void vlv_hdmi_pre_pll_enable(struct intel_encoder *encoder,
-				    struct intel_crtc_state *pipe_config,
-				    struct drm_connector_state *conn_state)
+				    const struct intel_crtc_state *pipe_config,
+				    const struct drm_connector_state *conn_state)
 {
 	intel_hdmi_prepare(encoder, pipe_config);
 
@@ -1724,8 +1724,8 @@ static void vlv_hdmi_pre_pll_enable(struct intel_encoder *encoder,
 }
 
 static void chv_hdmi_pre_pll_enable(struct intel_encoder *encoder,
-				    struct intel_crtc_state *pipe_config,
-				    struct drm_connector_state *conn_state)
+				    const struct intel_crtc_state *pipe_config,
+				    const struct drm_connector_state *conn_state)
 {
 	intel_hdmi_prepare(encoder, pipe_config);
 
@@ -1733,23 +1733,23 @@ static void chv_hdmi_pre_pll_enable(struct intel_encoder *encoder,
 }
 
 static void chv_hdmi_post_pll_disable(struct intel_encoder *encoder,
-				      struct intel_crtc_state *old_crtc_state,
-				      struct drm_connector_state *old_conn_state)
+				      const struct intel_crtc_state *old_crtc_state,
+				      const struct drm_connector_state *old_conn_state)
 {
 	chv_phy_post_pll_disable(encoder);
 }
 
 static void vlv_hdmi_post_disable(struct intel_encoder *encoder,
-				  struct intel_crtc_state *old_crtc_state,
-				  struct drm_connector_state *old_conn_state)
+				  const struct intel_crtc_state *old_crtc_state,
+				  const struct drm_connector_state *old_conn_state)
 {
 	/* Reset lanes to avoid HDMI flicker (VLV w/a) */
 	vlv_phy_reset_lanes(encoder);
 }
 
 static void chv_hdmi_post_disable(struct intel_encoder *encoder,
-				  struct intel_crtc_state *old_crtc_state,
-				  struct drm_connector_state *old_conn_state)
+				  const struct intel_crtc_state *old_crtc_state,
+				  const struct drm_connector_state *old_conn_state)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -1763,8 +1763,8 @@ static void chv_hdmi_post_disable(struct intel_encoder *encoder,
 }
 
 static void chv_hdmi_pre_enable(struct intel_encoder *encoder,
-				struct intel_crtc_state *pipe_config,
-				struct drm_connector_state *conn_state)
+				const struct intel_crtc_state *pipe_config,
+				const struct drm_connector_state *conn_state)
 {
 	struct intel_digital_port *dport = enc_to_dig_port(&encoder->base);
 	struct drm_device *dev = encoder->base.dev;
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 8b942ef2b3ec..29fd80e16feb 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -229,8 +229,8 @@ static void intel_lvds_pps_init_hw(struct drm_i915_private *dev_priv,
 }
 
 static void intel_pre_enable_lvds(struct intel_encoder *encoder,
-				  struct intel_crtc_state *pipe_config,
-				  struct drm_connector_state *conn_state)
+				  const struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state)
 {
 	struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
@@ -306,8 +306,8 @@ static void intel_pre_enable_lvds(struct intel_encoder *encoder,
  * Sets the power state for the panel.
  */
 static void intel_enable_lvds(struct intel_encoder *encoder,
-			      struct intel_crtc_state *pipe_config,
-			      struct drm_connector_state *conn_state)
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
@@ -326,8 +326,8 @@ static void intel_enable_lvds(struct intel_encoder *encoder,
 }
 
 static void intel_disable_lvds(struct intel_encoder *encoder,
-			       struct intel_crtc_state *old_crtc_state,
-			       struct drm_connector_state *old_conn_state)
+			       const struct intel_crtc_state *old_crtc_state,
+			       const struct drm_connector_state *old_conn_state)
 {
 	struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
@@ -341,8 +341,8 @@ static void intel_disable_lvds(struct intel_encoder *encoder,
 }
 
 static void gmch_disable_lvds(struct intel_encoder *encoder,
-			      struct intel_crtc_state *old_crtc_state,
-			      struct drm_connector_state *old_conn_state)
+			      const struct intel_crtc_state *old_crtc_state,
+			      const struct drm_connector_state *old_conn_state)
 
 {
 	struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
@@ -355,8 +355,8 @@ static void gmch_disable_lvds(struct intel_encoder *encoder,
 }
 
 static void pch_disable_lvds(struct intel_encoder *encoder,
-			     struct intel_crtc_state *old_crtc_state,
-			     struct drm_connector_state *old_conn_state)
+			     const struct intel_crtc_state *old_crtc_state,
+			     const struct drm_connector_state *old_conn_state)
 {
 	struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
 	struct intel_connector *intel_connector =
@@ -366,8 +366,8 @@ static void pch_disable_lvds(struct intel_encoder *encoder,
 }
 
 static void pch_post_disable_lvds(struct intel_encoder *encoder,
-				  struct intel_crtc_state *old_crtc_state,
-				  struct drm_connector_state *old_conn_state)
+				  const struct intel_crtc_state *old_crtc_state,
+				  const struct drm_connector_state *old_conn_state)
 {
 	intel_disable_lvds(encoder, old_crtc_state, old_conn_state);
 }
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 6cc181203135..d17b5814eb69 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -998,7 +998,7 @@ static bool intel_sdvo_write_infoframe(struct intel_sdvo *intel_sdvo,
 }
 
 static bool intel_sdvo_set_avi_infoframe(struct intel_sdvo *intel_sdvo,
-					 struct intel_crtc_state *pipe_config)
+					 const struct intel_crtc_state *pipe_config)
 {
 	uint8_t sdvo_data[HDMI_INFOFRAME_SIZE(AVI)];
 	union hdmi_infoframe frame;
@@ -1187,13 +1187,13 @@ static bool intel_sdvo_compute_config(struct intel_encoder *encoder,
 }
 
 static void intel_sdvo_pre_enable(struct intel_encoder *intel_encoder,
-				  struct intel_crtc_state *crtc_state,
-				  struct drm_connector_state *conn_state)
+				  const struct intel_crtc_state *crtc_state,
+				  const struct drm_connector_state *conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
 	const struct drm_display_mode *adjusted_mode = &crtc_state->base.adjusted_mode;
-	struct drm_display_mode *mode = &crtc_state->base.mode;
+	const struct drm_display_mode *mode = &crtc_state->base.mode;
 	struct intel_sdvo *intel_sdvo = to_sdvo(intel_encoder);
 	u32 sdvox;
 	struct intel_sdvo_in_out_map in_out;
@@ -1428,8 +1428,8 @@ static void intel_sdvo_get_config(struct intel_encoder *encoder,
 }
 
 static void intel_disable_sdvo(struct intel_encoder *encoder,
-			       struct intel_crtc_state *old_crtc_state,
-			       struct drm_connector_state *conn_state)
+			       const struct intel_crtc_state *old_crtc_state,
+			       const struct drm_connector_state *conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_sdvo *intel_sdvo = to_sdvo(encoder);
@@ -1473,21 +1473,21 @@ static void intel_disable_sdvo(struct intel_encoder *encoder,
 }
 
 static void pch_disable_sdvo(struct intel_encoder *encoder,
-			     struct intel_crtc_state *old_crtc_state,
-			     struct drm_connector_state *old_conn_state)
+			     const struct intel_crtc_state *old_crtc_state,
+			     const struct drm_connector_state *old_conn_state)
 {
 }
 
 static void pch_post_disable_sdvo(struct intel_encoder *encoder,
-				  struct intel_crtc_state *old_crtc_state,
-				  struct drm_connector_state *old_conn_state)
+				  const struct intel_crtc_state *old_crtc_state,
+				  const struct drm_connector_state *old_conn_state)
 {
 	intel_disable_sdvo(encoder, old_crtc_state, old_conn_state);
 }
 
 static void intel_enable_sdvo(struct intel_encoder *encoder,
-			      struct intel_crtc_state *pipe_config,
-			      struct drm_connector_state *conn_state)
+			      const struct intel_crtc_state *pipe_config,
+			      const struct drm_connector_state *conn_state)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 784df024e230..8af58caeae91 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -814,8 +814,8 @@ intel_tv_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe)
 
 static void
 intel_enable_tv(struct intel_encoder *encoder,
-		struct intel_crtc_state *pipe_config,
-		struct drm_connector_state *conn_state)
+		const struct intel_crtc_state *pipe_config,
+		const struct drm_connector_state *conn_state)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -829,8 +829,8 @@ intel_enable_tv(struct intel_encoder *encoder,
 
 static void
 intel_disable_tv(struct intel_encoder *encoder,
-		 struct intel_crtc_state *old_crtc_state,
-		 struct drm_connector_state *old_conn_state)
+		 const struct intel_crtc_state *old_crtc_state,
+		 const struct drm_connector_state *old_conn_state)
 {
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -838,7 +838,7 @@ intel_disable_tv(struct intel_encoder *encoder,
 	I915_WRITE(TV_CTL, I915_READ(TV_CTL) & ~TV_ENC_ENABLE);
 }
 
-static const struct tv_mode *intel_tv_mode_find(struct drm_connector_state *conn_state)
+static const struct tv_mode *intel_tv_mode_find(const struct drm_connector_state *conn_state)
 {
 	int format = conn_state->tv.mode;
 
@@ -976,8 +976,8 @@ static void set_color_conversion(struct drm_i915_private *dev_priv,
 }
 
 static void intel_tv_pre_enable(struct intel_encoder *encoder,
-				struct intel_crtc_state *pipe_config,
-				struct drm_connector_state *conn_state)
+				const struct intel_crtc_state *pipe_config,
+				const struct drm_connector_state *conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
-- 
2.10.2



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