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| author | Kees Cook <kees+treewide@kernel.org> | 2026-09-02 15:31:14 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2026-09-04 21:37:00 -0700 |
| commit | 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch) | |
| tree | c65086f9bdcd48c6360fb7cb4598bca084da1f32 /sound/soc/codecs/pcm179x.c | |
| download | linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip | |
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci
This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.
Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.
Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'sound/soc/codecs/pcm179x.c')
| -rw-r--r-- | sound/soc/codecs/pcm179x.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/sound/soc/codecs/pcm179x.c b/sound/soc/codecs/pcm179x.c new file mode 100644 index 000000000..cb7092787 --- /dev/null +++ b/sound/soc/codecs/pcm179x.c @@ -0,0 +1,237 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * PCM179X ASoC codec driver + * + * Copyright (c) Amarula Solutions B.V. 2013 + * + * Michael Trimarchi <michael@amarulasolutions.com> + */ + +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/kernel.h> +#include <linux/device.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/initval.h> +#include <sound/soc.h> +#include <sound/tlv.h> +#include <linux/of.h> + +#include "pcm179x.h" + +#define PCM179X_DAC_VOL_LEFT 0x10 +#define PCM179X_DAC_VOL_RIGHT 0x11 +#define PCM179X_FMT_CONTROL 0x12 +#define PCM179X_MODE_CONTROL 0x13 +#define PCM179X_SOFT_MUTE PCM179X_FMT_CONTROL + +#define PCM179X_FMT_MASK 0x70 +#define PCM179X_FMT_SHIFT 4 +#define PCM179X_MUTE_MASK 0x01 +#define PCM179X_MUTE_SHIFT 0 +#define PCM179X_ATLD_ENABLE (1 << 7) + +static const struct reg_default pcm179x_reg_defaults[] = { + { 0x10, 0xff }, + { 0x11, 0xff }, + { 0x12, 0x50 }, + { 0x13, 0x00 }, + { 0x14, 0x00 }, + { 0x15, 0x01 }, + { 0x16, 0x00 }, + { 0x17, 0x00 }, +}; + +static bool pcm179x_accessible_reg(struct device *dev, unsigned int reg) +{ + return reg >= 0x10 && reg <= 0x17; +} + +static bool pcm179x_writeable_reg(struct device *dev, unsigned int reg) +{ + bool accessible; + + accessible = pcm179x_accessible_reg(dev, reg); + + return accessible && reg != 0x16 && reg != 0x17; +} + +struct pcm179x_private { + struct regmap *regmap; + unsigned int format; + unsigned int rate; +}; + +static int pcm179x_set_dai_fmt(struct snd_soc_dai *codec_dai, + unsigned int format) +{ + struct snd_soc_component *component = codec_dai->component; + struct pcm179x_private *priv = snd_soc_component_get_drvdata(component); + + priv->format = format; + + return 0; +} + +static int pcm179x_mute(struct snd_soc_dai *dai, int mute, int direction) +{ + struct snd_soc_component *component = dai->component; + struct pcm179x_private *priv = snd_soc_component_get_drvdata(component); + int ret; + + ret = regmap_update_bits(priv->regmap, PCM179X_SOFT_MUTE, + PCM179X_MUTE_MASK, !!mute); + if (ret < 0) + return ret; + + return 0; +} + +static int pcm179x_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 pcm179x_private *priv = snd_soc_component_get_drvdata(component); + int val = 0, ret; + + priv->rate = params_rate(params); + + switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_RIGHT_J: + switch (params_width(params)) { + case 24: + case 32: + val = 2; + break; + case 16: + val = 0; + break; + default: + return -EINVAL; + } + break; + case SND_SOC_DAIFMT_I2S: + switch (params_width(params)) { + case 24: + case 32: + val = 5; + break; + case 16: + val = 4; + break; + default: + return -EINVAL; + } + break; + default: + dev_err(component->dev, "Invalid DAI format\n"); + return -EINVAL; + } + + val = val << PCM179X_FMT_SHIFT | PCM179X_ATLD_ENABLE; + + ret = regmap_update_bits(priv->regmap, PCM179X_FMT_CONTROL, + PCM179X_FMT_MASK | PCM179X_ATLD_ENABLE, val); + if (ret < 0) + return ret; + + return 0; +} + +static const u64 pcm179x_selectable_formats = + SND_SOC_POSSIBLE_DAIFMT_I2S | + SND_SOC_POSSIBLE_DAIFMT_RIGHT_J; + +static const struct snd_soc_dai_ops pcm179x_dai_ops = { + .set_fmt = pcm179x_set_dai_fmt, + .hw_params = pcm179x_hw_params, + .mute_stream = pcm179x_mute, + .auto_selectable_formats = &pcm179x_selectable_formats, + .num_auto_selectable_formats = 1, + .no_capture_mute = 1, +}; + +static const DECLARE_TLV_DB_SCALE(pcm179x_dac_tlv, -12000, 50, 1); + +static const struct snd_kcontrol_new pcm179x_controls[] = { + SOC_DOUBLE_R_RANGE_TLV("DAC Playback Volume", PCM179X_DAC_VOL_LEFT, + PCM179X_DAC_VOL_RIGHT, 0, 0xf, 0xff, 0, + pcm179x_dac_tlv), + SOC_SINGLE("DAC Invert Output Switch", PCM179X_MODE_CONTROL, 7, 1, 0), + SOC_SINGLE("DAC Rolloff Filter Switch", PCM179X_MODE_CONTROL, 1, 1, 0), +}; + +static const struct snd_soc_dapm_widget pcm179x_dapm_widgets[] = { +SND_SOC_DAPM_OUTPUT("IOUTL+"), +SND_SOC_DAPM_OUTPUT("IOUTL-"), +SND_SOC_DAPM_OUTPUT("IOUTR+"), +SND_SOC_DAPM_OUTPUT("IOUTR-"), +}; + +static const struct snd_soc_dapm_route pcm179x_dapm_routes[] = { + { "IOUTL+", NULL, "Playback" }, + { "IOUTL-", NULL, "Playback" }, + { "IOUTR+", NULL, "Playback" }, + { "IOUTR-", NULL, "Playback" }, +}; + +static struct snd_soc_dai_driver pcm179x_dai = { + .name = "pcm179x-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .rate_min = 10000, + .rate_max = 200000, + .formats = PCM1792A_FORMATS, }, + .ops = &pcm179x_dai_ops, +}; + +const struct regmap_config pcm179x_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 23, + .reg_defaults = pcm179x_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(pcm179x_reg_defaults), + .writeable_reg = pcm179x_writeable_reg, + .readable_reg = pcm179x_accessible_reg, +}; +EXPORT_SYMBOL_GPL(pcm179x_regmap_config); + +static const struct snd_soc_component_driver soc_component_dev_pcm179x = { + .controls = pcm179x_controls, + .num_controls = ARRAY_SIZE(pcm179x_controls), + .dapm_widgets = pcm179x_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(pcm179x_dapm_widgets), + .dapm_routes = pcm179x_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(pcm179x_dapm_routes), + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, +}; + +int pcm179x_common_init(struct device *dev, struct regmap *regmap) +{ + struct pcm179x_private *pcm179x; + + pcm179x = devm_kzalloc(dev, sizeof(struct pcm179x_private), + GFP_KERNEL); + if (!pcm179x) + return -ENOMEM; + + pcm179x->regmap = regmap; + dev_set_drvdata(dev, pcm179x); + + return devm_snd_soc_register_component(dev, + &soc_component_dev_pcm179x, &pcm179x_dai, 1); +} +EXPORT_SYMBOL_GPL(pcm179x_common_init); + +MODULE_DESCRIPTION("ASoC PCM179X driver"); +MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>"); +MODULE_LICENSE("GPL"); |
