DA7219 for our platform need to be configured for 1.8V. Hence, we add a fixed volatge regulator with supplies of 1.8V in the machine driver.

Signed-off-by: Akshu Agrawal akshu.agrawal@amd.com --- sound/soc/amd/Kconfig | 2 ++ sound/soc/amd/acp-da7219-max98357a.c | 45 ++++++++++++++++++++++++++++++++++++ 2 files changed, 47 insertions(+)

diff --git a/sound/soc/amd/Kconfig b/sound/soc/amd/Kconfig index 6cbf9cf..c447a51 100644 --- a/sound/soc/amd/Kconfig +++ b/sound/soc/amd/Kconfig @@ -8,6 +8,8 @@ config SND_SOC_AMD_CZ_DA7219MX98357_MACH select SND_SOC_DA7219 select SND_SOC_MAX98357A select SND_SOC_ADAU7002 + select REGULATOR + select REGULATOR_FIXED_VOLTAGE depends on SND_SOC_AMD_ACP && I2C help This option enables machine driver for DA7219 and MAX9835. diff --git a/sound/soc/amd/acp-da7219-max98357a.c b/sound/soc/amd/acp-da7219-max98357a.c index f42606e..fdf8972 100644 --- a/sound/soc/amd/acp-da7219-max98357a.c +++ b/sound/soc/amd/acp-da7219-max98357a.c @@ -31,7 +31,10 @@ #include <sound/jack.h> #include <linux/clk.h> #include <linux/gpio.h> +#include <linux/platform_device.h> #include <linux/module.h> +#include <linux/regulator/fixed.h> +#include <linux/regulator/machine.h> #include <linux/i2c.h> #include <linux/input.h> #include <linux/acpi.h> @@ -320,11 +323,53 @@ static void cz_dmic_shutdown(struct snd_pcm_substream *substream) .num_controls = ARRAY_SIZE(cz_mc_controls), };

+static struct regulator_consumer_supply acp_da7219_supplies[] = { + REGULATOR_SUPPLY("VDD", "i2c-DLGS7219:00"), + REGULATOR_SUPPLY("VDDMIC", "i2c-DLGS7219:00"), + REGULATOR_SUPPLY("VDDIO", "i2c-DLGS7219:00"), + REGULATOR_SUPPLY("IOVDD", "ADAU7002:00"), +}; + +static struct regulator_init_data acp_da7219_data = { + .constraints = { + .always_on = 1, + }, + .num_consumer_supplies = ARRAY_SIZE(acp_da7219_supplies), + .consumer_supplies = acp_da7219_supplies, +}; + +static struct fixed_voltage_config acp_da7219 = { + .supply_name = "reg-fixed-1.8V", + .microvolts = 1800000, /* 1.8V */ + .gpio = -EINVAL, + .enabled_at_boot = 1, + .init_data = &acp_da7219_data, +}; + +static struct platform_device acp_da7219_regulator = { + .name = "reg-fixed-voltage", + .id = PLATFORM_DEVID_AUTO, + .dev = { + .platform_data = &acp_da7219, + }, +}; + static int cz_probe(struct platform_device *pdev) { int ret; struct snd_soc_card *card; struct acp_platform_info *machine; + static bool regulators_registered; + + if (!regulators_registered) { + ret = platform_device_register(&acp_da7219_regulator); + if (ret) { + dev_err(&pdev->dev, "Failed to register regulator: %d\n", + ret); + return ret; + } + regulators_registered = true; + }

machine = devm_kzalloc(&pdev->dev, sizeof(struct acp_platform_info), GFP_KERNEL);