ASoC: AMD: Add a fix voltage regulator for DA7219 and ADAU7002

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

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Akshu Agrawal <akshu.agrawal@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/amd/Kconfig b/sound/soc/amd/Kconfig
index 6cbf9cf..58c1dcb 100644 (file)
--- a/sound/soc/amd/Kconfig
+++ b/sound/soc/amd/Kconfig
@@ -8,6 +8,7 @@ config SND_SOC_AMD_CZ_DA7219MX98357_MACH
        select SND_SOC_DA7219
        select SND_SOC_MAX98357A
        select SND_SOC_ADAU7002
+       select REGULATOR
        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..cd3cf6e 100644 (file)
--- a/sound/soc/amd/acp-da7219-max98357a.c
+++ b/sound/soc/amd/acp-da7219-max98357a.c
@@ -32,6 +32,8 @@
 #include <linux/clk.h>
 #include <linux/gpio.h>
 #include <linux/module.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/driver.h>
 #include <linux/i2c.h>
 #include <linux/input.h>
 #include <linux/acpi.h>
@@ -320,11 +322,52 @@ static struct snd_soc_card cz_card = {
        .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 regulator_config acp_da7219_cfg = {
+       .init_data = &acp_da7219_data,
+};
+
+static struct regulator_ops acp_da7219_ops = {
+};
+
+static struct regulator_desc acp_da7219_desc = {
+       .name = "reg-fixed-1.8V",
+       .type = REGULATOR_VOLTAGE,
+       .owner = THIS_MODULE,
+       .ops = &acp_da7219_ops,
+       .fixed_uV = 1800000, /* 1.8V */
+       .n_voltages = 1,
+};
+
 static int cz_probe(struct platform_device *pdev)
 {
        int ret;
        struct snd_soc_card *card;
        struct acp_platform_info *machine;
+       struct regulator_dev *rdev;
+
+       acp_da7219_cfg.dev = &pdev->dev;
+       rdev = devm_regulator_register(&pdev->dev, &acp_da7219_desc,
+                                      &acp_da7219_cfg);
+       if (IS_ERR(rdev)) {
+               dev_err(&pdev->dev, "Failed to register regulator: %d\n",
+                       ret);
+               return -EINVAL;
+       }
 
        machine = devm_kzalloc(&pdev->dev, sizeof(struct acp_platform_info),
                               GFP_KERNEL);