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drivers/soundwire/cs42l43: Add optional properties for controlling jack and accessory detect

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CS42L43 contains a range of optional properties which control the
behaviour of jack and accessory detect, and are added here.

These properties are documented in the Linux kernel source code, in the
file:
linux/Documentation/devicetree/bindings/sound/cirrus,cs42l43.yaml
which contains names, descriptions, valid and default values.

Being optional, these properties will be ignored if not specified.

Change-Id: I53fbed81df9157022384d5879c9d9ed351641ab5
Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/89231
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
This commit is contained in:
Maciej Strozek 2025-09-16 14:01:12 +01:00 • committed by Matt DeVillier
commit 78e7dcb152
2 changed files with 199 additions and 0 deletions
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138
src/drivers/soundwire/cs42l43/chip.h
View file

@ -6,12 +6,150 @@
#include <acpi/acpi.h>
#include <acpi/acpi_device.h>
#include <mipi/ids.h>
#include <stdbool.h>
enum cs42l43_detect_us {
DET_20_US = 20,
DET_100_US = 100,
DET_1_MS = 1000,
DET_10_MS = 10000,
DET_50_MS = 50000,
DET_75_MS = 75000,
DET_100_MS = 100000,
DET_200_MS = 200000,
};
enum cs42l43_db_ms {
DB_0_MS = -1, // To be handled as "0" in fill_ssdt function
DB_125_MS = 125,
DB_250_MS = 250,
DB_500_MS = 500,
DB_750_MS = 750,
DB_1000_MS = 1000,
DB_1250_MS = 1250,
DB_1500_MS = 1500,
};
enum cs42l43_bias_ramp_ms {
RAMP_10_MS = 10,
RAMP_40_MS = 40,
RAMP_90_MS = 90,
RAMP_170_MS = 170,
};
enum cs42l43_bias_sense {
BIAS_SENSE_OFF = -1, // To be handled as "0" in fill_ssdt function
BIAS_SENSE_14_UA = 14,
BIAS_SENSE_24_UA = 24,
BIAS_SENSE_43_UA = 43,
BIAS_SENSE_52_UA = 52,
BIAS_SENSE_61_UA = 61,
BIAS_SENSE_71_UA = 71,
BIAS_SENSE_90_UA = 90,
BIAS_SENSE_99_UA = 99,
};
struct drivers_soundwire_cs42l43_config {
char acpi_name[ACPI_NAME_BUFFER_SIZE]; /* Set by the acpi_name ops */
const char *desc;
const char *sub; /* SUB ID to uniquely identify system */
/* Optional jack / accessory detect properties (from cirrus,cs42l43.yaml) */
/*
* cirrus,bias-low: Select a 1.8V headset mic bias rather than 2.8V.
* false: 2.8V, true: 1.8V
* Default: false
*/
bool bias_low;
/*
* cirrus,bias-sense-microamp: Current at which the headset micbias sense clamp will engage
* 0 disables it.
* Valid values: {0,14,24,43,52,61,71,90,99} (microamps)
* Default: 14
*/
enum cs42l43_bias_sense bias_sense_microamp;
/*
* cirrus,bias-ramp-ms: Time in milliseconds the hardware allows for the headset micbias to
* ramp up.
* Valid values: {10,40,90,170} (ms)
* Default: 170
*/
enum cs42l43_bias_ramp_ms bias_ramp_ms;
/*
* cirrus,detect-us: Time in microseconds the type detection will run for. Long values will
* cause more audible effects, but give more accurate detection.
* Valid values: {20,100,1000,10000,50000,75000,100000,200000} (us)
* Default: 1000
*/
enum cs42l43_detect_us detect_us;
/*
* cirrus,button-automute: Enable the hardware automuting of decimator 1 when a headset button is
* pressed.
*/
bool button_automute;
/*
* cirrus,buttons-ohms: Impedance in Ohms for each headset button, these should be listed in
* ascending order.
* Valid count: 1..6 entries each > 0 (Ohms)
*/
uint64_t buttons_ohms[6];
int buttons_ohms_count;
/*
* cirrus,tip-debounce-ms: Software debounce on tip sense triggering in milliseconds.
* Default: 0
*/
int tip_debounce_ms;
/*
* cirrus,tip-invert: Indicates tip detect polarity, inverted implies open-circuit whilst the
* jack is inserted.
*/
bool tip_invert;
/*
* cirrus,tip-disable-pullup: Indicates if the internal pullup on the tip detect should be disabled.
*/
bool tip_disable_pullup;
/*
* cirrus,tip-fall-db-ms: Time in milliseconds a falling edge on the tip detect should be hardware
* debounced for. Note the falling edge is considered after the invert.
* Valid values: {0,125,250,500,750,1000,1250,1500} (ms)
* Default: 500
*/
enum cs42l43_db_ms tip_fall_db_ms;
/*
* cirrus,tip-rise-db-ms: Time in milliseconds a rising edge on the tip detect should be hardware
* debounced for. Note the rising edge is considered after the invert.
* Valid values: {0,125,250,500,750,1000,1250,1500} (ms)
* Default: 500
*/
enum cs42l43_db_ms tip_rise_db_ms;
/*
* cirrus,use-ring-sense: Indicates if the ring sense should be used.
*/
bool use_ring_sense;
/*
* cirrus,ring-invert: Indicates ring detect polarity, inverted implies open-circuit whilst the
* jack is inserted.
*/
bool ring_invert;
/*
* cirrus,ring-disable-pullup: Indicates if the internal pullup on the ring detect should be disabled.
*/
bool ring_disable_pullup;
/*
* cirrus,ring-fall-db-ms: Time in milliseconds a falling edge on the ring detect should be hardware
* debounced for. Note the falling edge is considered after the invert.
* Valid values: {0,125,250,500,750,1000,1250,1500} (ms)
* Default: 500
*/
enum cs42l43_db_ms ring_fall_db_ms;
/*
* cirrus,ring-rise-db-ms: Time in milliseconds a rising edge on the ring detect should be hardware
* debounced for. Note the rising edge is considered after the invert.
* Valid values: {0,125,250,500,750,1000,1250,1500} (ms)
* Default: 500
*/
enum cs42l43_db_ms ring_rise_db_ms;
};
#endif /* __DRIVERS_SOUNDWIRE_CS42L43_CHIP_H__ */

61
src/drivers/soundwire/cs42l43/cs42l43.c
View file

@ -7,6 +7,8 @@
#include <device/soundwire.h>
#include <mipi/ids.h>
#include <stdio.h>
#include <stdbool.h>
#include <stddef.h>
#include "chip.h"
@ -130,6 +132,65 @@ static void soundwire_cs42l43_fill_ssdt(const struct device *dev)
dsd = acpi_dp_new_table("_DSD");
if (config->bias_low)
acpi_dp_add_integer(dsd, "cirrus,bias-low", 1);
if (config->bias_sense_microamp) {
if (config->bias_sense_microamp == BIAS_SENSE_OFF)
config->bias_sense_microamp = 0;
acpi_dp_add_integer(dsd, "cirrus,bias-sense-microamp", config->bias_sense_microamp);
}
if (config->bias_ramp_ms)
acpi_dp_add_integer(dsd, "cirrus,bias-ramp-ms", config->bias_ramp_ms);
if (config->detect_us)
acpi_dp_add_integer(dsd, "cirrus,detect-us", config->detect_us);
if (config->button_automute)
acpi_dp_add_integer(dsd, "cirrus,button-automute", 1);
if (config->buttons_ohms_count > 0)
acpi_dp_add_integer_array(dsd, "cirrus,buttons-ohms", config->buttons_ohms,
config->buttons_ohms_count);
if (config->tip_debounce_ms)
acpi_dp_add_integer(dsd, "cirrus,tip-debounce-ms", config->tip_debounce_ms);
if (config->tip_invert)
acpi_dp_add_integer(dsd, "cirrus,tip-invert", 1);
if (config->tip_disable_pullup)
acpi_dp_add_integer(dsd, "cirrus,tip-disable-pullup", 1);
if (config->tip_fall_db_ms) {
if (config->tip_fall_db_ms == DB_0_MS)
config->tip_fall_db_ms = 0;
acpi_dp_add_integer(dsd, "cirrus,tip-fall-db-ms", config->tip_fall_db_ms);
}
if (config->tip_rise_db_ms) {
if (config->tip_rise_db_ms == DB_0_MS)
config->tip_rise_db_ms = 0;
acpi_dp_add_integer(dsd, "cirrus,tip-rise-db-ms", config->tip_rise_db_ms);
}
if (config->use_ring_sense)
acpi_dp_add_integer(dsd, "cirrus,use-ring-sense", 1);
if (config->ring_invert)
acpi_dp_add_integer(dsd, "cirrus,ring-invert", 1);
if (config->ring_disable_pullup)
acpi_dp_add_integer(dsd, "cirrus,ring-disable-pullup", 1);
if (config->ring_fall_db_ms) {
if (config->ring_fall_db_ms == DB_0_MS)
config->ring_fall_db_ms = 0;
acpi_dp_add_integer(dsd, "cirrus,ring-fall-db-ms", config->ring_fall_db_ms);
}
if (config->ring_rise_db_ms) {
if (config->ring_rise_db_ms == DB_0_MS)
config->ring_rise_db_ms = 0;
acpi_dp_add_integer(dsd, "cirrus,ring-rise-db-ms", config->ring_rise_db_ms);
}
soundwire_gen_codec(dsd, &cs42l43_codec, NULL);
acpi_dp_write(dsd);