soundwire: intel_ace2.x: add AC timing extensions for PantherLake

The ACE3 IP used in PantherLake exposes new bitfields in the ACTMCTL
register to better control clocks/delays. These bitfields were
reserved/zero in the ACE2.x IP, to simplify the integration the new
bifields are added unconditionally. The behavior will only be impacted
when the firmware exposes DSD properties to set non-zero values.

Signed-off-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Péter Ujfalusi <[email protected]>
Reviewed-by: Ranjani Sridharan <[email protected]>
Signed-off-by: Bard Liao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: plbossart

drivers/soundwire/intel.h

@@ -59,6 +59,11 @@ struct sdw_intel {
 };
 
 struct sdw_intel_prop {
+	u16 clde;
+	u16 doaise2;
+	u16 dodse2;
+	u16 clds;
+	u16 clss;
 	u16 doaise;
 	u16 doais;
 	u16 dodse;

drivers/soundwire/intel_ace2x.c

@@ -27,19 +27,34 @@ static void intel_shim_vs_init(struct sdw_intel *sdw)
 	void __iomem *shim_vs = sdw->link_res->shim_vs;
 	struct sdw_bus *bus = &sdw->cdns.bus;
 	struct sdw_intel_prop *intel_prop;
+	u16 clde;
+	u16 doaise2;
+	u16 dodse2;
+	u16 clds;
+	u16 clss;
 	u16 doaise;
 	u16 doais;
 	u16 dodse;
 	u16 dods;
 	u16 act;
 
 	intel_prop = bus->vendor_specific_prop;
+	clde = intel_prop->clde;
+	doaise2 = intel_prop->doaise2;
+	dodse2 = intel_prop->dodse2;
+	clds = intel_prop->clds;
+	clss = intel_prop->clss;
 	doaise = intel_prop->doaise;
 	doais = intel_prop->doais;
 	dodse = intel_prop->dodse;
 	dods = intel_prop->dods;
 
 	act = intel_readw(shim_vs, SDW_SHIM2_INTEL_VS_ACTMCTL);
+	u16p_replace_bits(&act, clde, SDW_SHIM3_INTEL_VS_ACTMCTL_CLDE);
+	u16p_replace_bits(&act, doaise2, SDW_SHIM3_INTEL_VS_ACTMCTL_DOAISE2);
+	u16p_replace_bits(&act, dodse2, SDW_SHIM3_INTEL_VS_ACTMCTL_DODSE2);
+	u16p_replace_bits(&act, clds, SDW_SHIM3_INTEL_VS_ACTMCTL_CLDS);
+	u16p_replace_bits(&act, clss, SDW_SHIM3_INTEL_VS_ACTMCTL_CLSS);
 	u16p_replace_bits(&act, doaise, SDW_SHIM2_INTEL_VS_ACTMCTL_DOAISE);
 	u16p_replace_bits(&act, doais, SDW_SHIM2_INTEL_VS_ACTMCTL_DOAIS);
 	u16p_replace_bits(&act, dodse, SDW_SHIM2_INTEL_VS_ACTMCTL_DODSE);

drivers/soundwire/intel_auxdevice.c

@@ -159,11 +159,31 @@ static int sdw_master_read_intel_prop(struct sdw_bus *bus)
 		return -ENOMEM;
 
 	/* initialize with hardware defaults, in case the properties are not found */
+	intel_prop->clde = 0x0;
+	intel_prop->doaise2 = 0x0;
+	intel_prop->dodse2 = 0x0;
+	intel_prop->clds = 0x0;
+	intel_prop->clss = 0x0;
 	intel_prop->doaise = 0x1;
 	intel_prop->doais = 0x3;
 	intel_prop->dodse  = 0x0;
 	intel_prop->dods  = 0x1;
 
+	fwnode_property_read_u16(link,
+				 "intel-sdw-clde",
+				 &intel_prop->clde);
+	fwnode_property_read_u16(link,
+				 "intel-sdw-doaise2",
+				 &intel_prop->doaise2);
+	fwnode_property_read_u16(link,
+				 "intel-sdw-dodse2",
+				 &intel_prop->dodse2);
+	fwnode_property_read_u16(link,
+				 "intel-sdw-clds",
+				 &intel_prop->clds);
+	fwnode_property_read_u16(link,
+				 "intel-sdw-clss",
+				 &intel_prop->clss);
 	fwnode_property_read_u16(link,
 				 "intel-sdw-doaise",
 				 &intel_prop->doaise);

include/linux/soundwire/sdw_intel.h

@@ -182,6 +182,11 @@
 #define SDW_SHIM2_INTEL_VS_ACTMCTL_DODSE	BIT(2)
 #define SDW_SHIM2_INTEL_VS_ACTMCTL_DOAIS	GENMASK(4, 3)
 #define SDW_SHIM2_INTEL_VS_ACTMCTL_DOAISE	BIT(5)
+#define SDW_SHIM3_INTEL_VS_ACTMCTL_CLSS		BIT(6)
+#define SDW_SHIM3_INTEL_VS_ACTMCTL_CLDS		GENMASK(11, 7)
+#define SDW_SHIM3_INTEL_VS_ACTMCTL_DODSE2	GENMASK(13, 12)
+#define SDW_SHIM3_INTEL_VS_ACTMCTL_DOAISE2	BIT(14)
+#define SDW_SHIM3_INTEL_VS_ACTMCTL_CLDE		BIT(15)
 
 /**
  * struct sdw_intel_stream_params_data: configuration passed during