ASoC: Intel: bdw_rt286: Update file comments

Drop redundant and update valuable comments within the file to increase
readability. This patch also revisits module information and kconfig
help strings.
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220620101402.2684366-13-cezary.rojewski@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/Kconfig

@@ -85,7 +85,7 @@ config SND_SOC_INTEL_BDW_RT5677_MACH
 	  If unsure select "N".
 
 config SND_SOC_INTEL_BROADWELL_MACH
-	tristate "Broadwell Wildcatpoint"
+	tristate "Broadwell with RT286 I2S codec"
 	depends on I2C
 	depends on I2C_DESIGNWARE_PLATFORM || COMPILE_TEST
 	depends on X86_INTEL_LPSS || COMPILE_TEST

sound/soc/intel/boards/bdw_rt286.c

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Intel Broadwell Wildcatpoint SST Audio
+ * Sound card driver for Intel Broadwell Wildcat Point with Realtek 286
  *
  * Copyright (C) 2013, Intel Corporation. All rights reserved.
  */
@@ -16,7 +16,7 @@
 #include "../../codecs/rt286.h"
 
 static struct snd_soc_jack card_headset;
-/* Headset jack detection DAPM pins */
+
 static struct snd_soc_jack_pin card_headset_pins[] = {
 	{
 		.pin = "Mic Jack",
@@ -43,18 +43,14 @@ static const struct snd_soc_dapm_widget card_widgets[] = {
 };
 
 static const struct snd_soc_dapm_route card_routes[] = {
-	/* speaker */
 	{"Speaker", NULL, "SPOR"},
 	{"Speaker", NULL, "SPOL"},
 
-	/* HP jack connectors - unknown if we have jack deteck */
 	{"Headphone Jack", NULL, "HPO Pin"},
 
-	/* other jacks */
 	{"MIC1", NULL, "Mic Jack"},
 	{"LINE1", NULL, "Line Jack"},
 
-	/* digital mics */
 	{"DMIC1 Pin", NULL, "DMIC1"},
 	{"DMIC2 Pin", NULL, "DMIC2"},
 
@@ -84,10 +80,10 @@ static int codec_link_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 	struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 	struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 
-	/* The ADSP will covert the FE rate to 48k, stereo */
+	/* The ADSP will convert the FE rate to 48kHz, stereo. */
 	rate->min = rate->max = 48000;
 	channels->min = channels->max = 2;
-	/* set SSP0 to 16 bit */
+	/* Set SSP0 to 16 bit. */
 	params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
 
 	return 0;
@@ -147,7 +143,6 @@ SND_SOC_DAILINK_DEF(platform, DAILINK_COMP_ARRAY(COMP_PLATFORM("haswell-pcm-audi
 SND_SOC_DAILINK_DEF(codec, DAILINK_COMP_ARRAY(COMP_CODEC("i2c-INT343A:00", "rt286-aif1")));
 SND_SOC_DAILINK_DEF(ssp0_port, DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port")));
 
-/* broadwell digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link card_dai_links[] = {
 	/* Front End DAI links */
 	{
@@ -240,14 +235,13 @@ static int bdw_rt286_resume(struct snd_soc_card *card)
 	return 0;
 }
 
-/* use space before codec name to simplify card ID, and simplify driver name */
+/* Use space before codec name to simplify card ID, and simplify driver name. */
 #define SOF_CARD_NAME "bdw rt286" /* card name will be 'sof-bdw rt286' */
 #define SOF_DRIVER_NAME "SOF"
 
 #define CARD_NAME "broadwell-rt286"
 #define DRIVER_NAME NULL /* card name will be used for driver name */
 
-/* broadwell audio machine driver for WPT + RT286S */
 static struct snd_soc_card bdw_rt286_card = {
 	.owner = THIS_MODULE,
 	.dai_link = card_dai_links,
@@ -269,14 +263,12 @@ static int bdw_rt286_probe(struct platform_device *pdev)
 	int ret;
 
 	bdw_rt286_card.dev = &pdev->dev;
-	/* override platform name, if required */
 	mach = pdev->dev.platform_data;
 
 	ret = snd_soc_fixup_dai_links_platform_name(&bdw_rt286_card, mach->mach_params.platform);
 	if (ret)
 		return ret;
 
-	/* set card and driver name */
 	if (snd_soc_acpi_sof_parent(&pdev->dev)) {
 		bdw_rt286_card.name = SOF_CARD_NAME;
 		bdw_rt286_card.driver_name = SOF_DRIVER_NAME;
@@ -308,8 +300,7 @@ static struct platform_driver bdw_rt286_driver = {
 
 module_platform_driver(bdw_rt286_driver)
 
-/* Module information */
 MODULE_AUTHOR("Liam Girdwood, Xingchao Wang");
-MODULE_DESCRIPTION("Intel SST Audio for WPT/Broadwell");
-MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Sound card driver for Intel Broadwell Wildcat Point with Realtek 286");
+MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:bdw_rt286");