CS42L83 is a publicly undocumented part found in Apple machines, similar (almost identical) to CS42L42. Share the binding schema of CS42L42 for it.

Signed-off-by: Martin Povišer povik+lin@cutebit.org --- Documentation/devicetree/bindings/sound/cirrus,cs42l42.yaml | 1 + 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/sound/cirrus,cs42l42.yaml b/Documentation/devicetree/bindings/sound/cirrus,cs42l42.yaml index 31800f70e9d9..7356084a2ca2 100644 --- a/Documentation/devicetree/bindings/sound/cirrus,cs42l42.yaml +++ b/Documentation/devicetree/bindings/sound/cirrus,cs42l42.yaml @@ -19,6 +19,7 @@ properties: compatible: enum: - cirrus,cs42l42 + - cirrus,cs42l83

reg: description:

From: Richard Fitzgerald rf@opensource.cirrus.com

Clean up the handling of bitclock frequency by keeping all the logic in cs42l42_pcm_hw_params(), which then simply passes the frequency as an argument to cs42l42_pll_config().

The previous code had become clunky as a legacy of earlier versions of the clock handling. The logic was split across cs42l42_pcm_hw_params() and cs42l42_pll_config(), with the params-derived bclk stashed in struct cs42l42_private only to pass it to cs42l42_pll_config().

Signed-off-by: Richard Fitzgerald rf@opensource.cirrus.com Signed-off-by: Martin Povišer povik+lin@cutebit.org --- sound/soc/codecs/cs42l42.c | 32 ++++++++++++++++---------------- sound/soc/codecs/cs42l42.h | 1 - 2 files changed, 16 insertions(+), 17 deletions(-)

diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index de1e276bdf7d..0048ce977645 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -647,18 +647,12 @@ static const struct cs42l42_pll_params pll_ratio_table[] = { { 24576000, 1, 0x03, 0x40, 0x000000, 0x03, 0x10, 12288000, 128, 1} };

-static int cs42l42_pll_config(struct snd_soc_component *component) +static int cs42l42_pll_config(struct snd_soc_component *component, unsigned int clk) { struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component); int i; - u32 clk; u32 fsync;

- if (!cs42l42->sclk) - clk = cs42l42->bclk; - else - clk = cs42l42->sclk; - /* Don't reconfigure if there is an audio stream running */ if (cs42l42->stream_use) { if (pll_ratio_table[cs42l42->pll_config].sclk == clk) @@ -895,19 +889,25 @@ static int cs42l42_pcm_hw_params(struct snd_pcm_substream *substream, unsigned int width = (params_width(params) / 8) - 1; unsigned int slot_width = 0; unsigned int val = 0; + unsigned int bclk; int ret;

cs42l42->srate = params_rate(params);

- /* - * Assume 24-bit samples are in 32-bit slots, to prevent SCLK being - * more than assumed (which would result in overclocking). - */ - if (params_width(params) == 24) - slot_width = 32; + if (cs42l42->sclk) { + /* machine driver has set the SCLK */ + bclk = cs42l42->sclk; + } else { + /* + * Assume 24-bit samples are in 32-bit slots, to prevent SCLK being + * more than assumed (which would result in overclocking). + */ + if (params_width(params) == 24) + slot_width = 32;

- /* I2S frame always has multiple of 2 channels */ - cs42l42->bclk = snd_soc_tdm_params_to_bclk(params, slot_width, 0, 2); + /* I2S frame always has multiple of 2 channels */ + bclk = snd_soc_tdm_params_to_bclk(params, slot_width, 0, 2); + }

switch (substream->stream) { case SNDRV_PCM_STREAM_CAPTURE: @@ -947,7 +947,7 @@ static int cs42l42_pcm_hw_params(struct snd_pcm_substream *substream, break; }

- ret = cs42l42_pll_config(component); + ret = cs42l42_pll_config(component, bclk); if (ret) return ret;

diff --git a/sound/soc/codecs/cs42l42.h b/sound/soc/codecs/cs42l42.h index 50299c9f283a..b4ba1467c558 100644 --- a/sound/soc/codecs/cs42l42.h +++ b/sound/soc/codecs/cs42l42.h @@ -30,7 +30,6 @@ struct cs42l42_private { struct snd_soc_jack *jack; struct mutex irq_lock; int pll_config; - int bclk; u32 sclk; u32 srate; u8 plug_state;

To prepare for adding SoundWire the probe must be split into three parts:

1) The bus-specific probe 2) Common bus-agnostic probe steps 3) Initialization of the peripheral registers

Step (3) must be separate because on SoundWire devices the probe must enable power supplies and release reset so that the peripheral can be enumerated by the bus, but it isn't possible to access registers until enumeration has completed.

The call to devm_snd_soc_register_component() must be done at stage (2) so that it can EPROBE_DEFER if necessary. In SoundWire systems stage (3) is not a probe event so a deferral at this stage would not result in re-probing dependencies.

A new init_done flag indicates that the chip has been identified and initialized. This is used to prevent cs42l42_remove(), cs42l42_suspend(), cs42l42_restore() and cs42l42_irq_thread() from attempting register accesses if the chip was not successfully initialized. Although this cannot happen on I2C, because the entire probe would fail, it is possible on SoundWire if probe succeeds but the cs42l42 is never enumerated.

Signed-off-by: Richard Fitzgerald rf@opensource.cirrus.com Signed-off-by: Martin Povišer povik+lin@cutebit.org --- sound/soc/codecs/cs42l42.c | 126 +++++++++++++++++++++++++------------ sound/soc/codecs/cs42l42.h | 2 + 2 files changed, 88 insertions(+), 40 deletions(-)

diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index 8e0dc14c55e0..451357a1c315 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -1627,7 +1627,7 @@ static irqreturn_t cs42l42_irq_thread(int irq, void *data) int report = 0;

mutex_lock(&cs42l42->irq_lock); - if (cs42l42->suspended) { + if (cs42l42->suspended || !cs42l42->init_done) { mutex_unlock(&cs42l42->irq_lock); return IRQ_NONE; } @@ -2199,28 +2199,13 @@ static int __maybe_unused cs42l42_resume(struct device *dev) return 0; }

-static int cs42l42_i2c_probe(struct i2c_client *i2c_client) +static int cs42l42_common_probe(struct cs42l42_private *cs42l42) { - struct cs42l42_private *cs42l42; - int ret, i, devid; - unsigned int reg; + int ret, i;

- cs42l42 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs42l42_private), - GFP_KERNEL); - if (!cs42l42) - return -ENOMEM; - - cs42l42->dev = &i2c_client->dev; - i2c_set_clientdata(i2c_client, cs42l42); + dev_set_drvdata(cs42l42->dev, cs42l42); mutex_init(&cs42l42->irq_lock);

- cs42l42->regmap = devm_regmap_init_i2c(i2c_client, &cs42l42_regmap); - if (IS_ERR(cs42l42->regmap)) { - ret = PTR_ERR(cs42l42->regmap); - dev_err(cs42l42->dev, "regmap_init() failed: %d\n", ret); - return ret; - } - BUILD_BUG_ON(ARRAY_SIZE(cs42l42_supply_names) != ARRAY_SIZE(cs42l42->supplies)); for (i = 0; i < ARRAY_SIZE(cs42l42->supplies); i++) cs42l42->supplies[i].supply = cs42l42_supply_names[i]; @@ -2257,8 +2242,8 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client) usleep_range(CS42L42_BOOT_TIME_US, CS42L42_BOOT_TIME_US * 2);

/* Request IRQ if one was specified */ - if (i2c_client->irq) { - ret = request_threaded_irq(i2c_client->irq, + if (cs42l42->irq) { + ret = request_threaded_irq(cs42l42->irq, NULL, cs42l42_irq_thread, IRQF_ONESHOT | IRQF_TRIGGER_LOW, "cs42l42", cs42l42); @@ -2271,6 +2256,32 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client) } }

+ /* Register codec now so it can EPROBE_DEFER */ + ret = devm_snd_soc_register_component(cs42l42->dev, + &soc_component_dev_cs42l42, + &cs42l42_dai, 1); + if (ret < 0) + goto err; + + return 0; + +err: + if (cs42l42->irq) + free_irq(cs42l42->irq, cs42l42); + +err_disable_noirq: + gpiod_set_value_cansleep(cs42l42->reset_gpio, 0); +err_disable_noreset: + regulator_bulk_disable(ARRAY_SIZE(cs42l42->supplies), cs42l42->supplies); + + return ret; +} + +static int cs42l42_init(struct cs42l42_private *cs42l42) +{ + unsigned int reg; + int devid, ret; + /* initialize codec */ devid = cirrus_read_device_id(cs42l42->regmap, CS42L42_DEVID_AB); if (devid < 0) { @@ -2320,15 +2331,15 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client) /* Setup headset detection */ cs42l42_setup_hs_type_detect(cs42l42);

+ /* + * Set init_done before unmasking interrupts so any triggered + * immediately will be handled. + */ + cs42l42->init_done = true; + /* Mask/Unmask Interrupts */ cs42l42_set_interrupt_masks(cs42l42);

- /* Register codec for machine driver */ - ret = devm_snd_soc_register_component(cs42l42->dev, - &soc_component_dev_cs42l42, &cs42l42_dai, 1); - if (ret < 0) - goto err_shutdown; - return 0;

err_shutdown: @@ -2337,34 +2348,69 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client) regmap_write(cs42l42->regmap, CS42L42_PWR_CTL1, 0xff);

err_disable: - if (i2c_client->irq) - free_irq(i2c_client->irq, cs42l42); - -err_disable_noirq: gpiod_set_value_cansleep(cs42l42->reset_gpio, 0); -err_disable_noreset: regulator_bulk_disable(ARRAY_SIZE(cs42l42->supplies), cs42l42->supplies); return ret; }

-static int cs42l42_i2c_remove(struct i2c_client *i2c_client) +static void cs42l42_common_remove(struct cs42l42_private *cs42l42) { - struct cs42l42_private *cs42l42 = i2c_get_clientdata(i2c_client); - - if (i2c_client->irq) - free_irq(i2c_client->irq, cs42l42); + if (cs42l42->irq) + free_irq(cs42l42->irq, cs42l42);

/* * The driver might not have control of reset and power supplies, * so ensure that the chip internals are powered down. */ - regmap_write(cs42l42->regmap, CS42L42_CODEC_INT_MASK, 0xff); - regmap_write(cs42l42->regmap, CS42L42_TSRS_PLUG_INT_MASK, 0xff); - regmap_write(cs42l42->regmap, CS42L42_PWR_CTL1, 0xff); + if (cs42l42->init_done) { + regmap_write(cs42l42->regmap, CS42L42_CODEC_INT_MASK, 0xff); + regmap_write(cs42l42->regmap, CS42L42_TSRS_PLUG_INT_MASK, 0xff); + regmap_write(cs42l42->regmap, CS42L42_PWR_CTL1, 0xff); + }

gpiod_set_value_cansleep(cs42l42->reset_gpio, 0); regulator_bulk_disable(ARRAY_SIZE(cs42l42->supplies), cs42l42->supplies); +} + +static int cs42l42_i2c_probe(struct i2c_client *i2c_client) +{ + struct device *dev = &i2c_client->dev; + struct cs42l42_private *cs42l42; + struct regmap *regmap; + int ret; + + cs42l42 = devm_kzalloc(dev, sizeof(struct cs42l42_private), GFP_KERNEL); + if (!cs42l42) + return -ENOMEM; + + regmap = devm_regmap_init_i2c(i2c_client, &cs42l42_regmap); + if (IS_ERR(regmap)) { + ret = PTR_ERR(regmap); + dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret); + return ret; + } + + cs42l42->dev = dev; + cs42l42->regmap = regmap; + cs42l42->irq = i2c_client->irq; + + ret = cs42l42_common_probe(cs42l42); + if (ret) + return ret; + + ret = cs42l42_init(cs42l42); + if (ret) + cs42l42_common_remove(cs42l42); + + return ret; +} + +static int cs42l42_i2c_remove(struct i2c_client *i2c_client) +{ + struct cs42l42_private *cs42l42 = dev_get_drvdata(&i2c_client->dev); + + cs42l42_common_remove(cs42l42);

return 0; } diff --git a/sound/soc/codecs/cs42l42.h b/sound/soc/codecs/cs42l42.h index b4ba1467c558..a8e0d5b414a5 100644 --- a/sound/soc/codecs/cs42l42.h +++ b/sound/soc/codecs/cs42l42.h @@ -29,6 +29,7 @@ struct cs42l42_private { struct completion pdn_done; struct snd_soc_jack *jack; struct mutex irq_lock; + int irq; int pll_config; u32 sclk; u32 srate; @@ -46,6 +47,7 @@ struct cs42l42_private { u8 stream_use; bool hp_adc_up_pending; bool suspended; + bool init_done; };

#endif /* __CS42L42_H__ */

From: Richard Fitzgerald rf@opensource.cirrus.com

Pass pointers to snd_soc_component_driver and snd_soc_dai_driver objects into cs42l42_common_probe().

This is in preparation for adding SoundWire support.

Signed-off-by: Richard Fitzgerald rf@opensource.cirrus.com Signed-off-by: Martin Povišer povik+lin@cutebit.org --- sound/soc/codecs/cs42l42.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index 2efec8cce089..bffe0347bec0 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -579,7 +579,7 @@ static int cs42l42_set_jack(struct snd_soc_component *component, struct snd_soc_ return 0; }

-static const struct snd_soc_component_driver soc_component_dev_cs42l42 = { +static const struct snd_soc_component_driver cs42l42_soc_component = { .set_jack = cs42l42_set_jack, .dapm_widgets = cs42l42_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(cs42l42_dapm_widgets), @@ -2219,7 +2219,9 @@ static int __maybe_unused cs42l42_i2c_resume(struct device *dev) return 0; }

-static int cs42l42_common_probe(struct cs42l42_private *cs42l42) +static int cs42l42_common_probe(struct cs42l42_private *cs42l42, + const struct snd_soc_component_driver *component_drv, + struct snd_soc_dai_driver *dai) { int ret, i;

@@ -2277,9 +2279,7 @@ static int cs42l42_common_probe(struct cs42l42_private *cs42l42) }

/* Register codec now so it can EPROBE_DEFER */ - ret = devm_snd_soc_register_component(cs42l42->dev, - &soc_component_dev_cs42l42, - &cs42l42_dai, 1); + ret = devm_snd_soc_register_component(cs42l42->dev, component_drv, dai, 1); if (ret < 0) goto err;

@@ -2415,7 +2415,7 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client) cs42l42->regmap = regmap; cs42l42->irq = i2c_client->irq;

- ret = cs42l42_common_probe(cs42l42); + ret = cs42l42_common_probe(cs42l42, &cs42l42_soc_component, &cs42l42_dai); if (ret) return ret;

The CS42L83 part is a headphone jack codec found in recent Apple machines. It is a publicly undocumented part but as far as can be told it is identical to CS42L42 except for two points:

* The chip ID is different.

* Of those registers for which we have a default value in the existing CS42L42 kernel driver, one register (MCLK_CTL) differs in its reset value on CS42L83.

To address those two points (and only those), add to the CS42L42 driver a separate CS42L83 front.

Signed-off-by: Martin Povišer povik+lin@cutebit.org --- There's a simpler alternative to the full cs42l83-i2c.c duplication: We could drop the default

{ CS42L42_MCLK_CTL, 0x02 },

from the CS42L42 regmap, and not distinguish between the parts -- that would work too.

MAINTAINERS | 1 + include/sound/cs42l42.h | 1 + sound/soc/codecs/Kconfig | 7 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/cs42l42-i2c.c | 1 + sound/soc/codecs/cs42l42.c | 9 +- sound/soc/codecs/cs42l42.h | 1 + sound/soc/codecs/cs42l83-i2c.c | 248 +++++++++++++++++++++++++++++++++ 8 files changed, 266 insertions(+), 4 deletions(-) create mode 100644 sound/soc/codecs/cs42l83-i2c.c

diff --git a/MAINTAINERS b/MAINTAINERS index 895e8ace80dd..363e207c164d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1906,6 +1906,7 @@ L: alsa-devel@alsa-project.org (moderated for non-subscribers) S: Maintained F: Documentation/devicetree/bindings/sound/apple,* F: sound/soc/apple/* +F: sound/soc/codecs/cs42l83-i2c.c

ARM/ARTPEC MACHINE SUPPORT M: Jesper Nilsson jesper.nilsson@axis.com diff --git a/include/sound/cs42l42.h b/include/sound/cs42l42.h index a55d522f1772..1d1c24fdd0ca 100644 --- a/include/sound/cs42l42.h +++ b/include/sound/cs42l42.h @@ -40,6 +40,7 @@ #define CS42L42_PAGE_30 0x3000

#define CS42L42_CHIP_ID 0x42A42 +#define CS42L83_CHIP_ID 0x42A83

/* Page 0x10 Global Registers */ #define CS42L42_DEVID_AB (CS42L42_PAGE_10 + 0x01) diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 01725d0a9500..444cee829a26 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -722,6 +722,13 @@ config SND_SOC_CS42L73 tristate "Cirrus Logic CS42L73 CODEC" depends on I2C

+config SND_SOC_CS42L83 + tristate "Cirrus Logic CS42L83 CODEC" + depends on I2C + select REGMAP + select REGMAP_I2C + select SND_SOC_CS42L42_CORE + config SND_SOC_CS4234 tristate "Cirrus Logic CS4234 CODEC" depends on I2C diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 5b7020a0b234..9170ee1447dd 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -71,6 +71,7 @@ snd-soc-cs42l51-i2c-objs := cs42l51-i2c.o snd-soc-cs42l52-objs := cs42l52.o snd-soc-cs42l56-objs := cs42l56.o snd-soc-cs42l73-objs := cs42l73.o +snd-soc-cs42l83-i2c-objs := cs42l83-i2c.o snd-soc-cs4234-objs := cs4234.o snd-soc-cs4265-objs := cs4265.o snd-soc-cs4270-objs := cs4270.o @@ -430,6 +431,7 @@ obj-$(CONFIG_SND_SOC_CS42L51_I2C) += snd-soc-cs42l51-i2c.o obj-$(CONFIG_SND_SOC_CS42L52) += snd-soc-cs42l52.o obj-$(CONFIG_SND_SOC_CS42L56) += snd-soc-cs42l56.o obj-$(CONFIG_SND_SOC_CS42L73) += snd-soc-cs42l73.o +obj-$(CONFIG_SND_SOC_CS42L83) += snd-soc-cs42l83-i2c.o obj-$(CONFIG_SND_SOC_CS4234) += snd-soc-cs4234.o obj-$(CONFIG_SND_SOC_CS4265) += snd-soc-cs4265.o obj-$(CONFIG_SND_SOC_CS4270) += snd-soc-cs4270.o diff --git a/sound/soc/codecs/cs42l42-i2c.c b/sound/soc/codecs/cs42l42-i2c.c index e6999f44d0f5..21a277a3cf80 100644 --- a/sound/soc/codecs/cs42l42-i2c.c +++ b/sound/soc/codecs/cs42l42-i2c.c @@ -31,6 +31,7 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client) return ret; }

+ cs42l42->devid = CS42L42_CHIP_ID; cs42l42->dev = dev; cs42l42->regmap = regmap; cs42l42->irq = i2c_client->irq; diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index f7a4d51538dd..3f067cf9131a 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -2319,11 +2319,11 @@ int cs42l42_init(struct cs42l42_private *cs42l42) goto err_disable; }

- if (devid != CS42L42_CHIP_ID) { + if (devid != cs42l42->devid) { ret = -ENODEV; dev_err(cs42l42->dev, - "CS42L42 Device ID (%X). Expected %X\n", - devid, CS42L42_CHIP_ID); + "CS42L%x Device ID (%X). Expected %X\n", + cs42l42->devid & 0xff, devid, cs42l42->devid); goto err_disable; }

@@ -2334,7 +2334,8 @@ int cs42l42_init(struct cs42l42_private *cs42l42) }

dev_info(cs42l42->dev, - "Cirrus Logic CS42L42, Revision: %02X\n", reg & 0xFF); + "Cirrus Logic CS42L%x, Revision: %02X\n", + cs42l42->devid & 0xff, reg & 0xFF);

/* Power up the codec */ regmap_update_bits(cs42l42->regmap, CS42L42_PWR_CTL1, diff --git a/sound/soc/codecs/cs42l42.h b/sound/soc/codecs/cs42l42.h index be6f979c82ec..bc51bb09da5c 100644 --- a/sound/soc/codecs/cs42l42.h +++ b/sound/soc/codecs/cs42l42.h @@ -31,6 +31,7 @@ struct cs42l42_private { struct completion pdn_done; struct snd_soc_jack *jack; struct mutex irq_lock; + int devid; int irq; int pll_config; u32 sclk; diff --git a/sound/soc/codecs/cs42l83-i2c.c b/sound/soc/codecs/cs42l83-i2c.c new file mode 100644 index 000000000000..83edcefc57ed --- /dev/null +++ b/sound/soc/codecs/cs42l83-i2c.c @@ -0,0 +1,248 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * cs42l83-i2c.c -- CS42L83 ALSA SoC audio driver for I2C + * + * Based on cs42l42-i2c.c: + * Copyright 2016, 2022 Cirrus Logic, Inc. + */ + +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/types.h> + +#include "cs42l42.h" + +static const struct reg_default cs42l83_reg_defaults[] = { + { CS42L42_FRZ_CTL, 0x00 }, + { CS42L42_SRC_CTL, 0x10 }, + { CS42L42_MCLK_CTL, 0x00 }, /* <- only deviation from CS42L42 */ + { CS42L42_SFTRAMP_RATE, 0xA4 }, + { CS42L42_SLOW_START_ENABLE, 0x70 }, + { CS42L42_I2C_DEBOUNCE, 0x88 }, + { CS42L42_I2C_STRETCH, 0x03 }, + { CS42L42_I2C_TIMEOUT, 0xB7 }, + { CS42L42_PWR_CTL1, 0xFF }, + { CS42L42_PWR_CTL2, 0x84 }, + { CS42L42_PWR_CTL3, 0x20 }, + { CS42L42_RSENSE_CTL1, 0x40 }, + { CS42L42_RSENSE_CTL2, 0x00 }, + { CS42L42_OSC_SWITCH, 0x00 }, + { CS42L42_RSENSE_CTL3, 0x1B }, + { CS42L42_TSENSE_CTL, 0x1B }, + { CS42L42_TSRS_INT_DISABLE, 0x00 }, + { CS42L42_HSDET_CTL1, 0x77 }, + { CS42L42_HSDET_CTL2, 0x00 }, + { CS42L42_HS_SWITCH_CTL, 0xF3 }, + { CS42L42_HS_CLAMP_DISABLE, 0x00 }, + { CS42L42_MCLK_SRC_SEL, 0x00 }, + { CS42L42_SPDIF_CLK_CFG, 0x00 }, + { CS42L42_FSYNC_PW_LOWER, 0x00 }, + { CS42L42_FSYNC_PW_UPPER, 0x00 }, + { CS42L42_FSYNC_P_LOWER, 0xF9 }, + { CS42L42_FSYNC_P_UPPER, 0x00 }, + { CS42L42_ASP_CLK_CFG, 0x00 }, + { CS42L42_ASP_FRM_CFG, 0x10 }, + { CS42L42_FS_RATE_EN, 0x00 }, + { CS42L42_IN_ASRC_CLK, 0x00 }, + { CS42L42_OUT_ASRC_CLK, 0x00 }, + { CS42L42_PLL_DIV_CFG1, 0x00 }, + { CS42L42_ADC_OVFL_INT_MASK, 0x01 }, + { CS42L42_MIXER_INT_MASK, 0x0F }, + { CS42L42_SRC_INT_MASK, 0x0F }, + { CS42L42_ASP_RX_INT_MASK, 0x1F }, + { CS42L42_ASP_TX_INT_MASK, 0x0F }, + { CS42L42_CODEC_INT_MASK, 0x03 }, + { CS42L42_SRCPL_INT_MASK, 0x7F }, + { CS42L42_VPMON_INT_MASK, 0x01 }, + { CS42L42_PLL_LOCK_INT_MASK, 0x01 }, + { CS42L42_TSRS_PLUG_INT_MASK, 0x0F }, + { CS42L42_PLL_CTL1, 0x00 }, + { CS42L42_PLL_DIV_FRAC0, 0x00 }, + { CS42L42_PLL_DIV_FRAC1, 0x00 }, + { CS42L42_PLL_DIV_FRAC2, 0x00 }, + { CS42L42_PLL_DIV_INT, 0x40 }, + { CS42L42_PLL_CTL3, 0x10 }, + { CS42L42_PLL_CAL_RATIO, 0x80 }, + { CS42L42_PLL_CTL4, 0x03 }, + { CS42L42_LOAD_DET_EN, 0x00 }, + { CS42L42_HSBIAS_SC_AUTOCTL, 0x03 }, + { CS42L42_WAKE_CTL, 0xC0 }, + { CS42L42_ADC_DISABLE_MUTE, 0x00 }, + { CS42L42_TIPSENSE_CTL, 0x02 }, + { CS42L42_MISC_DET_CTL, 0x03 }, + { CS42L42_MIC_DET_CTL1, 0x1F }, + { CS42L42_MIC_DET_CTL2, 0x2F }, + { CS42L42_DET_INT1_MASK, 0xE0 }, + { CS42L42_DET_INT2_MASK, 0xFF }, + { CS42L42_HS_BIAS_CTL, 0xC2 }, + { CS42L42_ADC_CTL, 0x00 }, + { CS42L42_ADC_VOLUME, 0x00 }, + { CS42L42_ADC_WNF_HPF_CTL, 0x71 }, + { CS42L42_DAC_CTL1, 0x00 }, + { CS42L42_DAC_CTL2, 0x02 }, + { CS42L42_HP_CTL, 0x0D }, + { CS42L42_CLASSH_CTL, 0x07 }, + { CS42L42_MIXER_CHA_VOL, 0x3F }, + { CS42L42_MIXER_ADC_VOL, 0x3F }, + { CS42L42_MIXER_CHB_VOL, 0x3F }, + { CS42L42_EQ_COEF_IN0, 0x00 }, + { CS42L42_EQ_COEF_IN1, 0x00 }, + { CS42L42_EQ_COEF_IN2, 0x00 }, + { CS42L42_EQ_COEF_IN3, 0x00 }, + { CS42L42_EQ_COEF_RW, 0x00 }, + { CS42L42_EQ_COEF_OUT0, 0x00 }, + { CS42L42_EQ_COEF_OUT1, 0x00 }, + { CS42L42_EQ_COEF_OUT2, 0x00 }, + { CS42L42_EQ_COEF_OUT3, 0x00 }, + { CS42L42_EQ_INIT_STAT, 0x00 }, + { CS42L42_EQ_START_FILT, 0x00 }, + { CS42L42_EQ_MUTE_CTL, 0x00 }, + { CS42L42_SP_RX_CH_SEL, 0x04 }, + { CS42L42_SP_RX_ISOC_CTL, 0x04 }, + { CS42L42_SP_RX_FS, 0x8C }, + { CS42l42_SPDIF_CH_SEL, 0x0E }, + { CS42L42_SP_TX_ISOC_CTL, 0x04 }, + { CS42L42_SP_TX_FS, 0xCC }, + { CS42L42_SPDIF_SW_CTL1, 0x3F }, + { CS42L42_SRC_SDIN_FS, 0x40 }, + { CS42L42_SRC_SDOUT_FS, 0x40 }, + { CS42L42_SPDIF_CTL1, 0x01 }, + { CS42L42_SPDIF_CTL2, 0x00 }, + { CS42L42_SPDIF_CTL3, 0x00 }, + { CS42L42_SPDIF_CTL4, 0x42 }, + { CS42L42_ASP_TX_SZ_EN, 0x00 }, + { CS42L42_ASP_TX_CH_EN, 0x00 }, + { CS42L42_ASP_TX_CH_AP_RES, 0x0F }, + { CS42L42_ASP_TX_CH1_BIT_MSB, 0x00 }, + { CS42L42_ASP_TX_CH1_BIT_LSB, 0x00 }, + { CS42L42_ASP_TX_HIZ_DLY_CFG, 0x00 }, + { CS42L42_ASP_TX_CH2_BIT_MSB, 0x00 }, + { CS42L42_ASP_TX_CH2_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_EN, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH1_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI0_CH1_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH1_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH2_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI0_CH2_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH2_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH3_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI0_CH3_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH3_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH4_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI0_CH4_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH4_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI1_CH1_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI1_CH1_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI1_CH1_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI1_CH2_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI1_CH2_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI1_CH2_BIT_LSB, 0x00 }, +}; + +/* + * This is all the same as for CS42L42 but we + * replace the on-reset register defaults. + */ +const struct regmap_config cs42l83_regmap = { + .reg_bits = 8, + .val_bits = 8, + + .readable_reg = cs42l42_readable_register, + .volatile_reg = cs42l42_volatile_register, + + .ranges = &cs42l42_page_range, + .num_ranges = 1, + + .max_register = CS42L42_MAX_REGISTER, + .reg_defaults = cs42l83_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(cs42l83_reg_defaults), + .cache_type = REGCACHE_RBTREE, + + .use_single_read = true, + .use_single_write = true, +}; + +static int cs42l83_i2c_probe(struct i2c_client *i2c_client) +{ + struct device *dev = &i2c_client->dev; + struct cs42l42_private *cs42l83; + struct regmap *regmap; + int ret; + + cs42l83 = devm_kzalloc(dev, sizeof(*cs42l83), GFP_KERNEL); + if (!cs42l83) + return -ENOMEM; + + regmap = devm_regmap_init_i2c(i2c_client, &cs42l83_regmap); + if (IS_ERR(regmap)) { + ret = PTR_ERR(regmap); + dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret); + return ret; + } + + cs42l83->devid = CS42L83_CHIP_ID; + cs42l83->dev = dev; + cs42l83->regmap = regmap; + cs42l83->irq = i2c_client->irq; + + ret = cs42l42_common_probe(cs42l83, &cs42l42_soc_component, &cs42l42_dai); + if (ret) + return ret; + + ret = cs42l42_init(cs42l83); + if (ret) + cs42l42_common_remove(cs42l83); + + return ret; +} + +static int cs42l83_i2c_remove(struct i2c_client *i2c_client) +{ + struct cs42l42_private *cs42l83 = dev_get_drvdata(&i2c_client->dev); + + cs42l42_common_remove(cs42l83); + + return 0; +} + +static int __maybe_unused cs42l83_i2c_resume(struct device *dev) +{ + int ret; + + ret = cs42l42_resume(dev); + if (ret) + return ret; + + cs42l42_resume_restore(dev); + + return 0; +} + +static const struct dev_pm_ops cs42l83_i2c_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(cs42l42_suspend, cs42l83_i2c_resume) +}; + +static const struct of_device_id __maybe_unused cs42l83_of_match[] = { + { .compatible = "cirrus,cs42l83", }, + {} +}; +MODULE_DEVICE_TABLE(of, cs42l83_of_match); + +static struct i2c_driver cs42l83_i2c_driver = { + .driver = { + .name = "cs42l83", + .pm = &cs42l83_i2c_pm_ops, + .of_match_table = of_match_ptr(cs42l83_of_match), + }, + .probe_new = cs42l83_i2c_probe, + .remove = cs42l83_i2c_remove, +}; + +module_i2c_driver(cs42l83_i2c_driver); + +MODULE_DESCRIPTION("ASoC CS42L83 I2C driver"); +MODULE_AUTHOR("Martin Povišer povik+lin@cutebit.org"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(SND_SOC_CS42L42_CORE);

The driver wants to know the bit rate on the serial bus and takes that to be the value set by 'set_sysclk'. The 'set_bclk_ratio' op is a better fit for figuring out the clocking parameters of the serial bus, so implement that and give it precedence over the prior methods.

Signed-off-by: Martin Povišer povik+lin@cutebit.org --- sound/soc/codecs/cs42l42.c | 17 ++++++++++++++++- sound/soc/codecs/cs42l42.h | 1 + 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index 3f067cf9131a..36761ba0f2c4 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -898,7 +898,10 @@ static int cs42l42_pcm_hw_params(struct snd_pcm_substream *substream,

cs42l42->srate = params_rate(params);

- if (cs42l42->sclk) { + if (cs42l42->bclk_ratio) { + /* machine driver has set the BCLK/samp-rate ratio */ + bclk = cs42l42->bclk_ratio * params_rate(params); + } else if (cs42l42->sclk) { /* machine driver has set the SCLK */ bclk = cs42l42->sclk; } else { @@ -984,6 +987,17 @@ static int cs42l42_set_sysclk(struct snd_soc_dai *dai, return -EINVAL; }

+static int cs42l42_set_bclk_ratio(struct snd_soc_dai *dai, + unsigned int bclk_ratio) +{ + struct snd_soc_component *component = dai->component; + struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component); + + cs42l42->bclk_ratio = bclk_ratio; + + return 0; +} + static int cs42l42_mute_stream(struct snd_soc_dai *dai, int mute, int stream) { struct snd_soc_component *component = dai->component; @@ -1087,6 +1101,7 @@ static const struct snd_soc_dai_ops cs42l42_ops = { .hw_params = cs42l42_pcm_hw_params, .set_fmt = cs42l42_set_dai_fmt, .set_sysclk = cs42l42_set_sysclk, + .set_bclk_ratio = cs42l42_set_bclk_ratio, .mute_stream = cs42l42_mute_stream, };

diff --git a/sound/soc/codecs/cs42l42.h b/sound/soc/codecs/cs42l42.h index bc51bb09da5c..a72136664112 100644 --- a/sound/soc/codecs/cs42l42.h +++ b/sound/soc/codecs/cs42l42.h @@ -35,6 +35,7 @@ struct cs42l42_private { int irq; int pll_config; u32 sclk; + u32 bclk_ratio; u32 srate; u8 plug_state; u8 hs_type;