Add bridged amplifiers to cs42l43

Merge series from Charles Keepax <[email protected]>:

In some cs42l43 systems a couple of cs35l56 amplifiers are attached
to the cs42l43's SPI and I2S. On Windows the cs42l43 is controlled
by a SDCA class driver and these two amplifiers are controlled by
firmware running on the cs42l43. However, under Linux the decision
was made to interact with the cs42l43 directly, affording the user
greater control over the audio system. However, this has resulted
in an issue where these two bridged cs35l56 amplifiers are not
populated in ACPI and must be added manually. There is at least an
SDCA extension unit DT entry we can key off.

The process of adding this is handled using a software node, firstly the
ability to add native chip selects to software nodes must be added.
Secondly, an additional flag for naming the SPI devices is added this
allows the machine driver to key to the correct amplifier. Then finally,
the cs42l43 SPI driver adds the two amplifiers directly onto its SPI
bus.

An additional series will follow soon to add the audio machine driver
parts (in the sof-sdw driver), however that is fairly orthogonal to
this part of the process, getting the actual amplifiers registered.

1 files changed, 9 insertions, 14 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index f0c3ed37b350..abd62bebc46d 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -67,6 +67,7 @@
 #include "intel_dp_tunnel.h"
 #include "intel_dpio_phy.h"
 #include "intel_dpll.h"
+#include "intel_drrs.h"
 #include "intel_fifo_underrun.h"
 #include "intel_hdcp.h"
 #include "intel_hdmi.h"
@@ -498,7 +499,7 @@ intel_dp_set_source_rates(struct intel_dp *intel_dp)
 	/* The values must be in increasing order */
 	static const int mtl_rates[] = {
 		162000, 216000, 243000, 270000, 324000, 432000, 540000, 675000,
-		810000,	1000000, 1350000, 2000000,
+		810000,	1000000, 2000000,
 	};
 	static const int icl_rates[] = {
 		162000, 216000, 270000, 324000, 432000, 540000, 648000, 810000,
@@ -1421,7 +1422,8 @@ static bool intel_dp_source_supports_fec(struct intel_dp *intel_dp,
 	if (DISPLAY_VER(dev_priv) >= 12)
 		return true;
 
-	if (DISPLAY_VER(dev_priv) == 11 && encoder->port != PORT_A)
+	if (DISPLAY_VER(dev_priv) == 11 && encoder->port != PORT_A &&
+	    !intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DP_MST))
 		return true;
 
 	return false;
@@ -1916,8 +1918,9 @@ icl_dsc_compute_link_config(struct intel_dp *intel_dp,
 	dsc_max_bpp = min(dsc_max_bpp, pipe_bpp - 1);
 
 	for (i = 0; i < ARRAY_SIZE(valid_dsc_bpp); i++) {
-		if (valid_dsc_bpp[i] < dsc_min_bpp ||
-		    valid_dsc_bpp[i] > dsc_max_bpp)
+		if (valid_dsc_bpp[i] < dsc_min_bpp)
+			continue;
+		if (valid_dsc_bpp[i] > dsc_max_bpp)
 			break;
 
 		ret = dsc_compute_link_config(intel_dp,
@@ -2683,15 +2686,6 @@ intel_dp_compute_hdr_metadata_infoframe_sdp(struct intel_dp *intel_dp,
 		intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GAMUT_METADATA);
 }
 
-static bool cpu_transcoder_has_drrs(struct drm_i915_private *i915,
-				    enum transcoder cpu_transcoder)
-{
-	if (HAS_DOUBLE_BUFFERED_M_N(i915))
-		return true;
-
-	return intel_cpu_transcoder_has_m2_n2(i915, cpu_transcoder);
-}
-
 static bool can_enable_drrs(struct intel_connector *connector,
 			    const struct intel_crtc_state *pipe_config,
 			    const struct drm_display_mode *downclock_mode)
@@ -2714,7 +2708,7 @@ static bool can_enable_drrs(struct intel_connector *connector,
 	if (pipe_config->has_pch_encoder)
 		return false;
 
-	if (!cpu_transcoder_has_drrs(i915, pipe_config->cpu_transcoder))
+	if (!intel_cpu_transcoder_has_drrs(i915, pipe_config->cpu_transcoder))
 		return false;
 
 	return downclock_mode &&
@@ -6565,6 +6559,7 @@ intel_dp_init_connector(struct intel_digital_port *dig_port,
 		intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
 	else
 		intel_connector->get_hw_state = intel_connector_get_hw_state;
+	intel_connector->sync_state = intel_dp_connector_sync_state;
 
 	if (!intel_edp_init_connector(intel_dp, intel_connector)) {
 		intel_dp_aux_fini(intel_dp);