diff options
Diffstat (limited to 'sound/soc/codecs/wm8524.c')
| -rw-r--r-- | sound/soc/codecs/wm8524.c | 71 |
1 files changed, 49 insertions, 22 deletions
diff --git a/sound/soc/codecs/wm8524.c b/sound/soc/codecs/wm8524.c index fde444d826ca..6b1a7450b0ac 100644 --- a/sound/soc/codecs/wm8524.c +++ b/sound/soc/codecs/wm8524.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * wm8524.c -- WM8524 ALSA SoC Audio driver * @@ -5,26 +6,22 @@ * Copyright 2017 NXP * * Based on WM8523 ALSA SoC Audio driver written by Mark Brown - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ +#include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/gpio/consumer.h> -#include <linux/of_device.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/initval.h> -#define WM8524_NUM_RATES 7 +#define WM8524_NUM_RATES 12 /* codec private data */ struct wm8524_priv { @@ -49,7 +46,7 @@ static const struct snd_soc_dapm_route wm8524_dapm_routes[] = { static const struct { int value; int ratio; -} lrclk_ratios[WM8524_NUM_RATES] = { +} lrclk_ratios[] = { { 1, 128 }, { 2, 192 }, { 3, 256 }, @@ -66,17 +63,12 @@ static int wm8524_startup(struct snd_pcm_substream *substream, struct wm8524_priv *wm8524 = snd_soc_component_get_drvdata(component); /* The set of sample rates that can be supported depends on the - * MCLK supplied to the CODEC - enforce this. + * MCLK supplied to the CODEC. */ - if (!wm8524->sysclk) { - dev_err(component->dev, - "No MCLK configured, call set_sysclk() on init\n"); - return -EINVAL; - } - - snd_pcm_hw_constraint_list(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_RATE, - &wm8524->rate_constraint); + if (wm8524->sysclk) + snd_pcm_hw_constraint_list(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + &wm8524->rate_constraint); gpiod_set_value_cansleep(wm8524->mute, 1); @@ -100,9 +92,11 @@ static int wm8524_set_dai_sysclk(struct snd_soc_dai *codec_dai, unsigned int val; int i, j = 0; + wm8524->rate_constraint.count = 0; wm8524->sysclk = freq; + if (!wm8524->sysclk) + return 0; - wm8524->rate_constraint.count = 0; for (i = 0; i < ARRAY_SIZE(lrclk_ratios); i++) { val = freq / lrclk_ratios[i].ratio; /* Check that it's a standard rate since core can't @@ -111,9 +105,13 @@ static int wm8524_set_dai_sysclk(struct snd_soc_dai *codec_dai, */ switch (val) { case 8000: + case 11025: + case 16000: + case 22050: case 32000: case 44100: case 48000: + case 64000: case 88200: case 96000: case 176400: @@ -142,7 +140,7 @@ static int wm8524_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) SND_SOC_DAIFMT_MASTER_MASK); if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | - SND_SOC_DAIFMT_CBS_CFS)) { + SND_SOC_DAIFMT_CBC_CFC)) { dev_err(codec_dai->dev, "Invalid DAI format\n"); return -EINVAL; } @@ -160,9 +158,38 @@ static int wm8524_mute_stream(struct snd_soc_dai *dai, int mute, int stream) return 0; } +static int wm8524_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct wm8524_priv *wm8524 = snd_soc_component_get_drvdata(component); + int i; + + /* If sysclk is not configured, no need to check the rate */ + if (!wm8524->sysclk) + return 0; + + /* Find a supported LRCLK rate */ + for (i = 0; i < wm8524->rate_constraint.count; i++) { + if (wm8524->rate_constraint.list[i] == params_rate(params)) + break; + } + + if (i == wm8524->rate_constraint.count) { + dev_err(component->dev, "LRCLK %d unsupported with MCLK %d\n", + params_rate(params), wm8524->sysclk); + return -EINVAL; + } + + return 0; +} + #define WM8524_RATES SNDRV_PCM_RATE_8000_192000 -#define WM8524_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE) +#define WM8524_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ + SNDRV_PCM_FMTBIT_S24_LE |\ + SNDRV_PCM_FMTBIT_S32_LE) static const struct snd_soc_dai_ops wm8524_dai_ops = { .startup = wm8524_startup, @@ -170,6 +197,7 @@ static const struct snd_soc_dai_ops wm8524_dai_ops = { .set_sysclk = wm8524_set_dai_sysclk, .set_fmt = wm8524_set_fmt, .mute_stream = wm8524_mute_stream, + .hw_params = wm8524_hw_params, }; static struct snd_soc_dai_driver wm8524_dai = { @@ -204,7 +232,6 @@ static const struct snd_soc_component_driver soc_component_dev_wm8524 = { .idle_bias_on = 1, .use_pmdown_time = 1, .endianness = 1, - .non_legacy_dai_naming = 1, }; static const struct of_device_id wm8524_of_match[] = { @@ -228,7 +255,7 @@ static int wm8524_codec_probe(struct platform_device *pdev) wm8524->mute = devm_gpiod_get(&pdev->dev, "wlf,mute", GPIOD_OUT_LOW); if (IS_ERR(wm8524->mute)) { ret = PTR_ERR(wm8524->mute); - dev_err(&pdev->dev, "Failed to get mute line: %d\n", ret); + dev_err_probe(&pdev->dev, ret, "Failed to get mute line\n"); return ret; } |