ASoC: Intel: hsw_rt5640: 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/20220620101402.2684366-6-cezary.rojewski@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/Kconfig

@@ -41,7 +41,7 @@ config SND_SOC_INTEL_SOF_CIRRUS_COMMON
 if SND_SOC_INTEL_CATPT
 
 config SND_SOC_INTEL_HASWELL_MACH
-	tristate "Haswell Lynxpoint"
+	tristate "Haswell with RT5640 I2S codec"
 	depends on I2C
 	depends on I2C_DESIGNWARE_PLATFORM || COMPILE_TEST
 	depends on X86_INTEL_LPSS || COMPILE_TEST

sound/soc/intel/boards/hsw_rt5640.c

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Intel Haswell Lynxpoint SST Audio
+ * Sound card driver for Intel Haswell Lynx Point with Realtek 5640
  *
  * Copyright (C) 2013, Intel Corporation. All rights reserved.
  */
@@ -14,7 +14,6 @@
 #include <sound/soc-acpi.h>
 #include "../../codecs/rt5640.h"
 
-/* Haswell ULT platforms have a Headphone and Mic jack */
 static const struct snd_soc_dapm_widget card_widgets[] = {
 	SND_SOC_DAPM_HP("Headphones", NULL),
 	SND_SOC_DAPM_MIC("Mic", NULL),
@@ -36,10 +35,10 @@ 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 48k, 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;
@@ -58,7 +57,7 @@ static int codec_link_hw_params(struct snd_pcm_substream *substream,
 		return ret;
 	}
 
-	/* set correct codec filter for DAI format and clock config */
+	/* Set correct codec filter for DAI format and clock config. */
 	snd_soc_component_update_bits(codec_dai->component, 0x83, 0xffff, 0x8000);
 
 	return ret;
@@ -133,7 +132,6 @@ static struct snd_soc_dai_link card_dai_links[] = {
 	},
 };
 
-/* audio machine driver for Haswell Lynxpoint DSP + RT5640 */
 static struct snd_soc_card hsw_rt5640_card = {
 	.name = "haswell-rt5640",
 	.owner = THIS_MODULE,
@@ -152,7 +150,6 @@ static int hsw_rt5640_probe(struct platform_device *pdev)
 	int ret;
 
 	hsw_rt5640_card.dev = &pdev->dev;
-	/* override platform name, if required */
 	mach = pdev->dev.platform_data;
 
 	ret = snd_soc_fixup_dai_links_platform_name(&hsw_rt5640_card, mach->mach_params.platform);
@@ -172,8 +169,7 @@ static struct platform_driver hsw_rt5640_driver = {
 
 module_platform_driver(hsw_rt5640_driver)
 
-/* Module information */
 MODULE_AUTHOR("Liam Girdwood, Xingchao Wang");
-MODULE_DESCRIPTION("Intel SST Audio for Haswell Lynxpoint");
-MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Sound card driver for Intel Haswell Lynx Point with Realtek 5640");
+MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:hsw_rt5640");