ALSA/ASoC/SoundWire: Intel: use single definition for SDW_INTEL_MAX_LINKS

The definitions are currently duplicated in intel-sdw-acpi.c and
sof_sdw.c.  Move the definition to the sdw_intel.h header, and change
the prefix to make it Intel-specific.

No functionality change in this patch.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20240819005548.5867-2-yung-chuan.liao@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/linux/soundwire/sdw_intel.h

@@ -447,4 +447,9 @@ extern const struct sdw_intel_hw_ops sdw_intel_lnl_hw_ops;
 
 #define SDW_INTEL_DEV_NUM_IDA_MIN           6
 
+/*
+ * Max number of links supported in hardware
+ */
+#define SDW_INTEL_MAX_LINKS                4
+
 #endif

sound/hda/intel-sdw-acpi.c

@@ -17,7 +17,6 @@
 #include <linux/string.h>
 
 #define SDW_LINK_TYPE		4 /* from Intel ACPI documentation */
-#define SDW_MAX_LINKS		4
 
 static int ctrl_link_mask;
 module_param_named(sdw_link_mask, ctrl_link_mask, int, 0444);
@@ -87,9 +86,9 @@ sdw_intel_scan_controller(struct sdw_intel_acpi_info *info)
 	}
 
 	/* Check count is within bounds */
-	if (count > SDW_MAX_LINKS) {
+	if (count > SDW_INTEL_MAX_LINKS) {
 		dev_err(&adev->dev, "Link count %d exceeds max %d\n",
-			count, SDW_MAX_LINKS);
+			count, SDW_INTEL_MAX_LINKS);
 		return -EINVAL;
 	}
 

sound/soc/intel/boards/sof_sdw.c

@@ -5,12 +5,14 @@
  *  sof_sdw - ASOC Machine driver for Intel SoundWire platforms
  */
 
+#include <linux/acpi.h>
 #include <linux/bitmap.h>
 #include <linux/device.h>
 #include <linux/dmi.h>
 #include <linux/module.h>
 #include <linux/soundwire/sdw.h>
 #include <linux/soundwire/sdw_type.h>
+#include <linux/soundwire/sdw_intel.h>
 #include <sound/soc-acpi.h>
 #include "sof_sdw_common.h"
 #include "../../codecs/rt711.h"
@@ -883,7 +885,7 @@ static int create_sdw_dailinks(struct snd_soc_card *card,
 	struct intel_mc_ctx *intel_ctx = (struct intel_mc_ctx *)ctx->private;
 	int ret, i;
 
-	for (i = 0; i < SDW_MAX_LINKS; i++)
+	for (i = 0; i < SDW_INTEL_MAX_LINKS; i++)
 		intel_ctx->sdw_pin_index[i] = SOC_SDW_INTEL_BIDIR_PDI_BASE;
 
 	/* generate DAI links by each sdw link */

sound/soc/intel/boards/sof_sdw_common.h

@@ -19,8 +19,6 @@
 #define SOC_SDW_MAX_CPU_DAIS 16
 #define SOC_SDW_INTEL_BIDIR_PDI_BASE 2
 
-#define SDW_MAX_LINKS		4
-
 /* 8 combinations with 4 links + unused group 0 */
 #define SDW_MAX_GROUPS 9
 
@@ -57,7 +55,7 @@ enum {
 struct intel_mc_ctx {
 	struct sof_hdmi_private hdmi;
 	/* To store SDW Pin index for each SoundWire link */
-	unsigned int sdw_pin_index[SDW_MAX_LINKS];
+	unsigned int sdw_pin_index[SDW_INTEL_MAX_LINKS];
 };
 
 extern unsigned long sof_sdw_quirk;

sound/soc/intel/boards/sof_sdw_hdmi.c

@@ -5,10 +5,12 @@
  *  sof_sdw_hdmi - Helpers to handle HDMI from generic machine driver
  */
 
+#include <linux/acpi.h>
 #include <linux/device.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
+#include <linux/soundwire/sdw_intel.h>
 #include <sound/soc.h>
 #include <sound/soc-acpi.h>
 #include <sound/jack.h>