drm/i915: Use intel_attached_encoder()

It's easy to confuse the drm_connector->encoder (legacy state
adjusted during modeset) and intel_connector->encoder (the statically
(sans. MST) attached encoder of the connector). For the latter
let's use intel_attached_encoder() consistently.

@@
identifier F !~ "^intel_attached_encoder$";
struct intel_connector *C;
expression E;
@@
F(...)
{
<...
(
  C->encoder = E
|
- C->encoder
+ intel_attached_encoder(C)
)
...>
}

@@
identifier F !~ "^intel_attached_encoder$";
struct drm_connector *C;
expression E;
@@
F(...)
{
<...
(
  to_intel_connector(C)->encoder = E
|
- to_intel_connector(C)->encoder
+ intel_attached_encoder(to_intel_connector(C))
)
...>
}

v2: Regenerated
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191204180549.1267-6-ville.syrjala@linux.intel.comReviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>

drivers/gpu/drm/i915/display/intel_connector.c

@@ -153,7 +153,7 @@ void intel_connector_attach_encoder(struct intel_connector *connector,
 bool intel_connector_get_hw_state(struct intel_connector *connector)
 {
 	enum pipe pipe = 0;
-	struct intel_encoder *encoder = connector->encoder;
+	struct intel_encoder *encoder = intel_attached_encoder(connector);
 
 	return encoder->get_hw_state(encoder, &pipe);
 }

drivers/gpu/drm/i915/display/intel_ddi.c

@@ -2046,7 +2046,7 @@ bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector)
 {
 	struct drm_device *dev = intel_connector->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_encoder *encoder = intel_connector->encoder;
+	struct intel_encoder *encoder = intel_attached_encoder(intel_connector);
 	int type = intel_connector->base.connector_type;
 	enum port port = encoder->port;
 	enum transcoder cpu_transcoder;

drivers/gpu/drm/i915/display/intel_display.c

@@ -7581,7 +7581,7 @@ static void intel_connector_verify_state(struct intel_crtc_state *crtc_state,
 		      connector->base.name);
 
 	if (connector->get_hw_state(connector)) {
-		struct intel_encoder *encoder = connector->encoder;
+		struct intel_encoder *encoder = intel_attached_encoder(connector);
 
 		I915_STATE_WARN(!crtc_state,
 			 "connector enabled without attached crtc\n");
@@ -18073,7 +18073,7 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev)
 
 			connector->base.dpms = DRM_MODE_DPMS_ON;
 
-			encoder = connector->encoder;
+			encoder = intel_attached_encoder(connector);
 			connector->base.encoder = &encoder->base;
 
 			crtc = to_intel_crtc(encoder->base.crtc);

drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c

@@ -57,7 +57,7 @@ static void set_aux_backlight_enable(struct intel_dp *intel_dp, bool enable)
  */
 static u32 intel_dp_aux_get_backlight(struct intel_connector *connector)
 {
-	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+	struct intel_dp *intel_dp = enc_to_intel_dp(intel_attached_encoder(connector));
 	u8 read_val[2] = { 0x0 };
 	u8 mode_reg;
 	u16 level = 0;
@@ -99,7 +99,7 @@ static void
 intel_dp_aux_set_backlight(const struct drm_connector_state *conn_state, u32 level)
 {
 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
-	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+	struct intel_dp *intel_dp = enc_to_intel_dp(intel_attached_encoder(connector));
 	u8 vals[2] = { 0x0 };
 
 	vals[0] = level;
@@ -127,7 +127,7 @@ intel_dp_aux_set_backlight(const struct drm_connector_state *conn_state, u32 lev
 static bool intel_dp_aux_set_pwm_freq(struct intel_connector *connector)
 {
 	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
-	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+	struct intel_dp *intel_dp = enc_to_intel_dp(intel_attached_encoder(connector));
 	const u8 pn = connector->panel.backlight.pwmgen_bit_count;
 	int freq, fxp, f, fxp_actual, fxp_min, fxp_max;
 
@@ -162,7 +162,7 @@ static void intel_dp_aux_enable_backlight(const struct intel_crtc_state *crtc_st
 					  const struct drm_connector_state *conn_state)
 {
 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
-	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+	struct intel_dp *intel_dp = enc_to_intel_dp(intel_attached_encoder(connector));
 	struct intel_panel *panel = &connector->panel;
 	u8 dpcd_buf, new_dpcd_buf, edp_backlight_mode;
 
@@ -221,7 +221,7 @@ static void intel_dp_aux_disable_backlight(const struct drm_connector_state *old
 static u32 intel_dp_aux_calc_max_backlight(struct intel_connector *connector)
 {
 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
-	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+	struct intel_dp *intel_dp = enc_to_intel_dp(intel_attached_encoder(connector));
 	struct intel_panel *panel = &connector->panel;
 	u32 max_backlight = 0;
 	int freq, fxp, fxp_min, fxp_max, fxp_actual, f = 1;
@@ -311,7 +311,7 @@ static int intel_dp_aux_setup_backlight(struct intel_connector *connector,
 static bool
 intel_dp_aux_display_control_capable(struct intel_connector *connector)
 {
-	struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
+	struct intel_dp *intel_dp = enc_to_intel_dp(intel_attached_encoder(connector));
 
 	/* Check the eDP Display control capabilities registers to determine if
 	 * the panel can support backlight control over the aux channel

drivers/gpu/drm/i915/display/intel_dp_mst.c

@@ -631,9 +631,9 @@ static const struct drm_encoder_funcs intel_dp_mst_enc_funcs = {
 
 static bool intel_dp_mst_get_hw_state(struct intel_connector *connector)
 {
-	if (connector->encoder && connector->base.state->crtc) {
+	if (intel_attached_encoder(connector) && connector->base.state->crtc) {
 		enum pipe pipe;
-		if (!connector->encoder->get_hw_state(connector->encoder, &pipe))
+		if (!intel_attached_encoder(connector)->get_hw_state(intel_attached_encoder(connector), &pipe))
 			return false;
 		return true;
 	}

drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c

@@ -45,7 +45,7 @@
 
 static u32 dcs_get_backlight(struct intel_connector *connector)
 {
-	struct intel_encoder *encoder = connector->encoder;
+	struct intel_encoder *encoder = intel_attached_encoder(connector);
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 	struct mipi_dsi_device *dsi_device;
 	u8 data = 0;
@@ -160,7 +160,7 @@ int intel_dsi_dcs_init_backlight_funcs(struct intel_connector *intel_connector)
 {
 	struct drm_device *dev = intel_connector->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_encoder *encoder = intel_connector->encoder;
+	struct intel_encoder *encoder = intel_attached_encoder(intel_connector);
 	struct intel_panel *panel = &intel_connector->panel;
 
 	if (dev_priv->vbt.backlight.type != INTEL_BACKLIGHT_DSI_DCS)

drivers/gpu/drm/i915/display/intel_hdcp.c

@@ -1527,7 +1527,7 @@ static int hdcp2_enable_encryption(struct intel_connector *connector)
 	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
 	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_hdcp *hdcp = &connector->hdcp;
-	enum port port = connector->encoder->port;
+	enum port port = intel_attached_encoder(connector)->port;
 	enum transcoder cpu_transcoder = hdcp->cpu_transcoder;
 	int ret;
 
@@ -1565,7 +1565,7 @@ static int hdcp2_disable_encryption(struct intel_connector *connector)
 	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
 	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_hdcp *hdcp = &connector->hdcp;
-	enum port port = connector->encoder->port;
+	enum port port = intel_attached_encoder(connector)->port;
 	enum transcoder cpu_transcoder = hdcp->cpu_transcoder;
 	int ret;
 
@@ -1676,7 +1676,7 @@ static int intel_hdcp2_check_link(struct intel_connector *connector)
 	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
 	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_hdcp *hdcp = &connector->hdcp;
-	enum port port = connector->encoder->port;
+	enum port port = intel_attached_encoder(connector)->port;
 	enum transcoder cpu_transcoder;
 	int ret = 0;
 
@@ -1830,7 +1830,7 @@ static inline int initialize_hdcp_port_data(struct intel_connector *connector,
 
 	if (INTEL_GEN(dev_priv) < 12)
 		data->fw_ddi =
-			intel_get_mei_fw_ddi_index(connector->encoder->port);
+			intel_get_mei_fw_ddi_index(intel_attached_encoder(connector)->port);
 	else
 		/*
 		 * As per ME FW API expectation, for GEN 12+, fw_ddi is filled

drivers/gpu/drm/i915/display/intel_hotplug.c

@@ -200,7 +200,7 @@ intel_hpd_irq_storm_switch_to_polling(struct drm_i915_private *dev_priv)
 			continue;
 
 		intel_connector = to_intel_connector(connector);
-		intel_encoder = intel_connector->encoder;
+		intel_encoder = intel_attached_encoder(intel_connector);
 		if (!intel_encoder)
 			continue;
 
@@ -255,7 +255,7 @@ static void intel_hpd_irq_storm_reenable_work(struct work_struct *work)
 
 			/* Don't check MST ports, they don't have pins */
 			if (!intel_connector->mst_port &&
-			    intel_connector->encoder->hpd_pin == pin) {
+			    intel_attached_encoder(intel_connector)->hpd_pin == pin) {
 				if (connector->polled != intel_connector->polled)
 					DRM_DEBUG_DRIVER("Reenabling HPD on connector %s\n",
 							 connector->name);
@@ -389,9 +389,9 @@ static void i915_hotplug_work_func(struct work_struct *work)
 		u32 hpd_bit;
 
 		intel_connector = to_intel_connector(connector);
-		if (!intel_connector->encoder)
+		if (!intel_attached_encoder(intel_connector))
 			continue;
-		intel_encoder = intel_connector->encoder;
+		intel_encoder = intel_attached_encoder(intel_connector);
 		hpd_bit = BIT(intel_encoder->hpd_pin);
 		if ((hpd_event_bits | hpd_retry_bits) & hpd_bit) {
 			DRM_DEBUG_KMS("Connector %s (pin %i) received hotplug event.\n",
@@ -621,7 +621,7 @@ static void i915_hpd_poll_init_work(struct work_struct *work)
 			continue;
 
 		if (!connector->polled && I915_HAS_HOTPLUG(dev_priv) &&
-		    intel_connector->encoder->hpd_pin > HPD_NONE) {
+		    intel_attached_encoder(intel_connector)->hpd_pin > HPD_NONE) {
 			connector->polled = enabled ?
 				DRM_CONNECTOR_POLL_CONNECT |
 				DRM_CONNECTOR_POLL_DISCONNECT :

drivers/gpu/drm/i915/display/intel_psr.c

@@ -1534,7 +1534,7 @@ void intel_psr_atomic_check(struct drm_connector *connector,
 		return;
 
 	intel_connector = to_intel_connector(connector);
-	dig_port = enc_to_dig_port(intel_connector->encoder);
+	dig_port = enc_to_dig_port(intel_attached_encoder(intel_connector));
 	if (dev_priv->psr.dp != &dig_port->dp)
 		return;
 

drivers/gpu/drm/i915/display/vlv_dsi.c

@@ -1563,7 +1563,7 @@ static enum drm_panel_orientation
 vlv_dsi_get_hw_panel_orientation(struct intel_connector *connector)
 {
 	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
-	struct intel_encoder *encoder = connector->encoder;
+	struct intel_encoder *encoder = intel_attached_encoder(connector);
 	enum intel_display_power_domain power_domain;
 	enum drm_panel_orientation orientation;
 	struct intel_plane *plane;

drivers/gpu/drm/i915/i915_debugfs.c

@@ -2391,7 +2391,7 @@ static void intel_hdcp_info(struct seq_file *m,
 static void intel_dp_info(struct seq_file *m,
 			  struct intel_connector *intel_connector)
 {
-	struct intel_encoder *intel_encoder = intel_connector->encoder;
+	struct intel_encoder *intel_encoder = intel_attached_encoder(intel_connector);
 	struct intel_dp *intel_dp = enc_to_intel_dp(intel_encoder);
 
 	seq_printf(m, "\tDPCD rev: %x\n", intel_dp->dpcd[DP_DPCD_REV]);
@@ -2410,7 +2410,7 @@ static void intel_dp_info(struct seq_file *m,
 static void intel_dp_mst_info(struct seq_file *m,
 			  struct intel_connector *intel_connector)
 {
-	struct intel_encoder *intel_encoder = intel_connector->encoder;
+	struct intel_encoder *intel_encoder = intel_attached_encoder(intel_connector);
 	struct intel_dp_mst_encoder *intel_mst =
 		enc_to_mst(intel_encoder);
 	struct intel_digital_port *intel_dig_port = intel_mst->primary;
@@ -2424,7 +2424,7 @@ static void intel_dp_mst_info(struct seq_file *m,
 static void intel_hdmi_info(struct seq_file *m,
 			    struct intel_connector *intel_connector)
 {
-	struct intel_encoder *intel_encoder = intel_connector->encoder;
+	struct intel_encoder *intel_encoder = intel_attached_encoder(intel_connector);
 	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(intel_encoder);
 
 	seq_printf(m, "\taudio support: %s\n", yesno(intel_hdmi->has_audio));