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authorNiklas Cassel <cassel@kernel.org>2026-09-16 15:00:32 +0200
committerNiklas Cassel <cassel@kernel.org>2026-09-16 16:18:00 +0200
commit8d836581f9b1f57ceaa2b47654754ef1260b410b (patch)
tree1dbd4d0dfb99c2e238356cbe947e5b0be3e3a571 /sound/soc/codecs/max9768.c
downloadlinux-stable-8d836581f9b1f57ceaa2b47654754ef1260b410b.tar.gz
linux-stable-8d836581f9b1f57ceaa2b47654754ef1260b410b.zip
ata: libata-scsi: fix ata_dsm_trim_pages() kernel-docgrafted
make htmldocs fails with: Documentation/driver-api/libata:604: ./drivers/ata/libata-scsi.c:2301: ERROR: Unexpected indentation. [docutils] The Return: section of ata_dsm_trim_pages() ends its first sentence with a colon and continues with an indented bullet list. reStructuredText requires a blank line before an indented block, so docutils chokes on the list. Simply adding the missing blank line does not work either: Return: is a kernel-doc "special section", which is terminated by the first blank line, so the bullet list would end up in the Description section, detached from the sentence introducing it. Spell the two bounds out as prose instead, so that the Return: section stays self-contained. Documentation-only change. Fixes: e64e6b5dc867 ("ata: libata-scsi: scale DSM TRIM payload by MAX PAGES PER DSM COMMAND") Reported-by: Thomas Huth <thuth@redhat.com> Closes: https://lore.kernel.org/linux-ide/b0a0b8e8-cc4f-4c7b-8bc5-fee0712d405a@redhat.com/ Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Link: https://lore.kernel.org/r/20260916130031.29990-2-cassel@kernel.org Signed-off-by: Niklas Cassel <cassel@kernel.org>
Diffstat (limited to 'sound/soc/codecs/max9768.c')
-rw-r--r--sound/soc/codecs/max9768.c232
1 files changed, 232 insertions, 0 deletions
diff --git a/sound/soc/codecs/max9768.c b/sound/soc/codecs/max9768.c
new file mode 100644
index 000000000..8621d9bdb
--- /dev/null
+++ b/sound/soc/codecs/max9768.c
@@ -0,0 +1,232 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * MAX9768 AMP driver
+ *
+ * Copyright (C) 2011, 2012 by Wolfram Sang, Pengutronix e.K.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regmap.h>
+
+#include <sound/core.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/max9768.h>
+
+/* "Registers" */
+#define MAX9768_VOL 0
+#define MAX9768_CTRL 3
+
+/* Commands */
+#define MAX9768_CTRL_PWM 0x15
+#define MAX9768_CTRL_FILTERLESS 0x16
+
+struct max9768 {
+ struct regmap *regmap;
+ struct gpio_desc *mute;
+ struct gpio_desc *shdn;
+ u32 flags;
+};
+
+static const struct reg_default max9768_default_regs[] = {
+ { 0, 0 },
+ { 3, MAX9768_CTRL_FILTERLESS},
+};
+
+static int max9768_get_gpio(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *c = snd_kcontrol_chip(kcontrol);
+ struct max9768 *max9768 = snd_soc_component_get_drvdata(c);
+ int val = gpiod_get_value_cansleep(max9768->mute);
+
+ ucontrol->value.integer.value[0] = !val;
+
+ return 0;
+}
+
+static int max9768_set_gpio(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *c = snd_kcontrol_chip(kcontrol);
+ struct max9768 *max9768 = snd_soc_component_get_drvdata(c);
+ bool val = !ucontrol->value.integer.value[0];
+ int ret;
+
+ if (val != gpiod_get_value_cansleep(max9768->mute))
+ ret = 1;
+ else
+ ret = 0;
+
+ gpiod_set_value_cansleep(max9768->mute, val);
+
+ return ret;
+}
+
+static const DECLARE_TLV_DB_RANGE(volume_tlv,
+ 0, 0, TLV_DB_SCALE_ITEM(-16150, 0, 0),
+ 1, 1, TLV_DB_SCALE_ITEM(-9280, 0, 0),
+ 2, 2, TLV_DB_SCALE_ITEM(-9030, 0, 0),
+ 3, 3, TLV_DB_SCALE_ITEM(-8680, 0, 0),
+ 4, 4, TLV_DB_SCALE_ITEM(-8430, 0, 0),
+ 5, 5, TLV_DB_SCALE_ITEM(-8080, 0, 0),
+ 6, 6, TLV_DB_SCALE_ITEM(-7830, 0, 0),
+ 7, 7, TLV_DB_SCALE_ITEM(-7470, 0, 0),
+ 8, 8, TLV_DB_SCALE_ITEM(-7220, 0, 0),
+ 9, 9, TLV_DB_SCALE_ITEM(-6870, 0, 0),
+ 10, 10, TLV_DB_SCALE_ITEM(-6620, 0, 0),
+ 11, 11, TLV_DB_SCALE_ITEM(-6270, 0, 0),
+ 12, 12, TLV_DB_SCALE_ITEM(-6020, 0, 0),
+ 13, 13, TLV_DB_SCALE_ITEM(-5670, 0, 0),
+ 14, 14, TLV_DB_SCALE_ITEM(-5420, 0, 0),
+ 15, 17, TLV_DB_SCALE_ITEM(-5060, 250, 0),
+ 18, 18, TLV_DB_SCALE_ITEM(-4370, 0, 0),
+ 19, 19, TLV_DB_SCALE_ITEM(-4210, 0, 0),
+ 20, 20, TLV_DB_SCALE_ITEM(-3960, 0, 0),
+ 21, 21, TLV_DB_SCALE_ITEM(-3760, 0, 0),
+ 22, 22, TLV_DB_SCALE_ITEM(-3600, 0, 0),
+ 23, 23, TLV_DB_SCALE_ITEM(-3340, 0, 0),
+ 24, 24, TLV_DB_SCALE_ITEM(-3150, 0, 0),
+ 25, 25, TLV_DB_SCALE_ITEM(-2980, 0, 0),
+ 26, 26, TLV_DB_SCALE_ITEM(-2720, 0, 0),
+ 27, 27, TLV_DB_SCALE_ITEM(-2520, 0, 0),
+ 28, 30, TLV_DB_SCALE_ITEM(-2350, 190, 0),
+ 31, 31, TLV_DB_SCALE_ITEM(-1750, 0, 0),
+ 32, 34, TLV_DB_SCALE_ITEM(-1640, 100, 0),
+ 35, 37, TLV_DB_SCALE_ITEM(-1310, 110, 0),
+ 38, 39, TLV_DB_SCALE_ITEM(-990, 100, 0),
+ 40, 40, TLV_DB_SCALE_ITEM(-710, 0, 0),
+ 41, 41, TLV_DB_SCALE_ITEM(-600, 0, 0),
+ 42, 42, TLV_DB_SCALE_ITEM(-500, 0, 0),
+ 43, 43, TLV_DB_SCALE_ITEM(-340, 0, 0),
+ 44, 44, TLV_DB_SCALE_ITEM(-190, 0, 0),
+ 45, 45, TLV_DB_SCALE_ITEM(-50, 0, 0),
+ 46, 46, TLV_DB_SCALE_ITEM(50, 0, 0),
+ 47, 50, TLV_DB_SCALE_ITEM(120, 40, 0),
+ 51, 57, TLV_DB_SCALE_ITEM(290, 50, 0),
+ 58, 58, TLV_DB_SCALE_ITEM(650, 0, 0),
+ 59, 62, TLV_DB_SCALE_ITEM(700, 60, 0),
+ 63, 63, TLV_DB_SCALE_ITEM(950, 0, 0)
+);
+
+static const struct snd_kcontrol_new max9768_volume[] = {
+ SOC_SINGLE_TLV("Playback Volume", MAX9768_VOL, 0, 63, 0, volume_tlv),
+};
+
+static const struct snd_kcontrol_new max9768_mute[] = {
+ SOC_SINGLE_BOOL_EXT("Playback Switch", 0, max9768_get_gpio, max9768_set_gpio),
+};
+
+static const struct snd_soc_dapm_widget max9768_dapm_widgets[] = {
+SND_SOC_DAPM_INPUT("IN"),
+
+SND_SOC_DAPM_OUTPUT("OUT+"),
+SND_SOC_DAPM_OUTPUT("OUT-"),
+};
+
+static const struct snd_soc_dapm_route max9768_dapm_routes[] = {
+ { "OUT+", NULL, "IN" },
+ { "OUT-", NULL, "IN" },
+};
+
+static int max9768_probe(struct snd_soc_component *component)
+{
+ struct max9768 *max9768 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ if (max9768->flags & MAX9768_FLAG_CLASSIC_PWM) {
+ ret = regmap_write(max9768->regmap, MAX9768_CTRL,
+ MAX9768_CTRL_PWM);
+ if (ret)
+ return ret;
+ }
+
+ if (max9768->mute) {
+ ret = snd_soc_add_component_controls(component, max9768_mute,
+ ARRAY_SIZE(max9768_mute));
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver max9768_component_driver = {
+ .probe = max9768_probe,
+ .controls = max9768_volume,
+ .num_controls = ARRAY_SIZE(max9768_volume),
+ .dapm_widgets = max9768_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(max9768_dapm_widgets),
+ .dapm_routes = max9768_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(max9768_dapm_routes),
+};
+
+static const struct regmap_config max9768_i2c_regmap_config = {
+ .reg_bits = 2,
+ .val_bits = 6,
+ .max_register = 3,
+ .reg_defaults = max9768_default_regs,
+ .num_reg_defaults = ARRAY_SIZE(max9768_default_regs),
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int max9768_i2c_probe(struct i2c_client *client)
+{
+ struct max9768 *max9768;
+ struct max9768_pdata *pdata = client->dev.platform_data;
+
+ max9768 = devm_kzalloc(&client->dev, sizeof(*max9768), GFP_KERNEL);
+ if (!max9768)
+ return -ENOMEM;
+
+ /* Mute on powerup to avoid clicks */
+ max9768->mute = devm_gpiod_get_optional(&client->dev,
+ "mute",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(max9768->mute))
+ return PTR_ERR(max9768->mute);
+ gpiod_set_consumer_name(max9768->mute, "MAX9768 Mute");
+
+ /* Activate chip by releasing shutdown, enables I2C */
+ max9768->shdn = devm_gpiod_get_optional(&client->dev,
+ "shutdown",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(max9768->shdn))
+ return PTR_ERR(max9768->shdn);
+ gpiod_set_consumer_name(max9768->shdn, "MAX9768 Shutdown");
+
+ if (pdata)
+ max9768->flags = pdata->flags;
+
+ i2c_set_clientdata(client, max9768);
+
+ max9768->regmap = devm_regmap_init_i2c(client, &max9768_i2c_regmap_config);
+ if (IS_ERR(max9768->regmap))
+ return PTR_ERR(max9768->regmap);
+
+ return devm_snd_soc_register_component(&client->dev,
+ &max9768_component_driver, NULL, 0);
+}
+
+static const struct i2c_device_id max9768_i2c_id[] = {
+ { .name = "max9768" },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max9768_i2c_id);
+
+static struct i2c_driver max9768_i2c_driver = {
+ .driver = {
+ .name = "max9768",
+ },
+ .probe = max9768_i2c_probe,
+ .id_table = max9768_i2c_id,
+};
+module_i2c_driver(max9768_i2c_driver);
+
+MODULE_AUTHOR("Wolfram Sang <kernel@pengutronix.de>");
+MODULE_DESCRIPTION("ASoC MAX9768 amplifier driver");
+MODULE_LICENSE("GPL v2");