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-rw-r--r--drivers/mfd/Kconfig11
-rw-r--r--drivers/mfd/twl6040-core.c114
2 files changed, 77 insertions, 48 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 29f463cc09cb..11e44386fa9b 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -268,10 +268,17 @@ config TWL6030_PWM
This is used to control charging LED brightness.
config TWL6040_CORE
- bool
- depends on TWL4030_CORE && GENERIC_HARDIRQS
+ bool "Support for TWL6040 audio codec"
+ depends on I2C=y && GENERIC_HARDIRQS
select MFD_CORE
+ select REGMAP_I2C
default n
+ help
+ Say yes here if you want support for Texas Instruments TWL6040 audio
+ codec.
+ This driver provides common support for accessing the device,
+ additional drivers must be enabled in order to use the
+ functionality of the device (audio, vibra).
config MFD_STMPE
bool "Support STMicroelectronics STMPE"
diff --git a/drivers/mfd/twl6040-core.c b/drivers/mfd/twl6040-core.c
index b2d8e512d3cb..2d6bedadca09 100644
--- a/drivers/mfd/twl6040-core.c
+++ b/drivers/mfd/twl6040-core.c
@@ -30,7 +30,9 @@
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/delay.h>
-#include <linux/i2c/twl.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/err.h>
#include <linux/mfd/core.h>
#include <linux/mfd/twl6040.h>
@@ -39,7 +41,7 @@
int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg)
{
int ret;
- u8 val = 0;
+ unsigned int val;
mutex_lock(&twl6040->io_mutex);
/* Vibra control registers from cache */
@@ -47,7 +49,7 @@ int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg)
reg == TWL6040_REG_VIBCTLR)) {
val = twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)];
} else {
- ret = twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &val, reg);
+ ret = regmap_read(twl6040->regmap, reg, &val);
if (ret < 0) {
mutex_unlock(&twl6040->io_mutex);
return ret;
@@ -64,7 +66,7 @@ int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val)
int ret;
mutex_lock(&twl6040->io_mutex);
- ret = twl_i2c_write_u8(TWL_MODULE_AUDIO_VOICE, val, reg);
+ ret = regmap_write(twl6040->regmap, reg, val);
/* Cache the vibra control registers */
if (reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR)
twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)] = val;
@@ -77,16 +79,9 @@ EXPORT_SYMBOL(twl6040_reg_write);
int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask)
{
int ret;
- u8 val;
mutex_lock(&twl6040->io_mutex);
- ret = twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &val, reg);
- if (ret)
- goto out;
-
- val |= mask;
- ret = twl_i2c_write_u8(TWL_MODULE_AUDIO_VOICE, val, reg);
-out:
+ ret = regmap_update_bits(twl6040->regmap, reg, mask, mask);
mutex_unlock(&twl6040->io_mutex);
return ret;
}
@@ -95,16 +90,9 @@ EXPORT_SYMBOL(twl6040_set_bits);
int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask)
{
int ret;
- u8 val;
mutex_lock(&twl6040->io_mutex);
- ret = twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &val, reg);
- if (ret)
- goto out;
-
- val &= ~mask;
- ret = twl_i2c_write_u8(TWL_MODULE_AUDIO_VOICE, val, reg);
-out:
+ ret = regmap_update_bits(twl6040->regmap, reg, mask, 0);
mutex_unlock(&twl6040->io_mutex);
return ret;
}
@@ -494,32 +482,58 @@ static struct resource twl6040_codec_rsrc[] = {
},
};
-static int __devinit twl6040_probe(struct platform_device *pdev)
+static bool twl6040_readable_reg(struct device *dev, unsigned int reg)
{
- struct twl4030_audio_data *pdata = pdev->dev.platform_data;
+ /* Register 0 is not readable */
+ if (!reg)
+ return false;
+ return true;
+}
+
+static struct regmap_config twl6040_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = TWL6040_REG_STATUS, /* 0x2e */
+
+ .readable_reg = twl6040_readable_reg,
+};
+
+static int __devinit twl6040_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct twl6040_platform_data *pdata = client->dev.platform_data;
struct twl6040 *twl6040;
struct mfd_cell *cell = NULL;
int ret, children = 0;
if (!pdata) {
- dev_err(&pdev->dev, "Platform data is missing\n");
+ dev_err(&client->dev, "Platform data is missing\n");
return -EINVAL;
}
/* In order to operate correctly we need valid interrupt config */
- if (!pdata->naudint_irq || !pdata->irq_base) {
- dev_err(&pdev->dev, "Invalid IRQ configuration\n");
+ if (!client->irq || !pdata->irq_base) {
+ dev_err(&client->dev, "Invalid IRQ configuration\n");
return -EINVAL;
}
- twl6040 = kzalloc(sizeof(struct twl6040), GFP_KERNEL);
- if (!twl6040)
- return -ENOMEM;
+ twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040),
+ GFP_KERNEL);
+ if (!twl6040) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ twl6040->regmap = regmap_init_i2c(client, &twl6040_regmap_config);
+ if (IS_ERR(twl6040->regmap)) {
+ ret = PTR_ERR(twl6040->regmap);
+ goto err;
+ }
- platform_set_drvdata(pdev, twl6040);
+ i2c_set_clientdata(client, twl6040);
- twl6040->dev = &pdev->dev;
- twl6040->irq = pdata->naudint_irq;
+ twl6040->dev = &client->dev;
+ twl6040->irq = client->irq;
twl6040->irq_base = pdata->irq_base;
mutex_init(&twl6040->mutex);
@@ -588,12 +602,12 @@ static int __devinit twl6040_probe(struct platform_device *pdev)
}
if (children) {
- ret = mfd_add_devices(&pdev->dev, pdev->id, twl6040->cells,
+ ret = mfd_add_devices(&client->dev, -1, twl6040->cells,
children, NULL, 0);
if (ret)
goto mfd_err;
} else {
- dev_err(&pdev->dev, "No platform data found for children\n");
+ dev_err(&client->dev, "No platform data found for children\n");
ret = -ENODEV;
goto mfd_err;
}
@@ -608,14 +622,15 @@ gpio2_err:
if (gpio_is_valid(twl6040->audpwron))
gpio_free(twl6040->audpwron);
gpio1_err:
- platform_set_drvdata(pdev, NULL);
- kfree(twl6040);
+ i2c_set_clientdata(client, NULL);
+ regmap_exit(twl6040->regmap);
+err:
return ret;
}
-static int __devexit twl6040_remove(struct platform_device *pdev)
+static int __devexit twl6040_remove(struct i2c_client *client)
{
- struct twl6040 *twl6040 = platform_get_drvdata(pdev);
+ struct twl6040 *twl6040 = i2c_get_clientdata(client);
if (twl6040->power_count)
twl6040_power(twl6040, 0);
@@ -626,23 +641,30 @@ static int __devexit twl6040_remove(struct platform_device *pdev)
free_irq(twl6040->irq_base + TWL6040_IRQ_READY, twl6040);
twl6040_irq_exit(twl6040);
- mfd_remove_devices(&pdev->dev);
- platform_set_drvdata(pdev, NULL);
- kfree(twl6040);
+ mfd_remove_devices(&client->dev);
+ i2c_set_clientdata(client, NULL);
+ regmap_exit(twl6040->regmap);
return 0;
}
-static struct platform_driver twl6040_driver = {
+static const struct i2c_device_id twl6040_i2c_id[] = {
+ { "twl6040", 0, },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, twl6040_i2c_id);
+
+static struct i2c_driver twl6040_driver = {
+ .driver = {
+ .name = "twl6040",
+ .owner = THIS_MODULE,
+ },
.probe = twl6040_probe,
.remove = __devexit_p(twl6040_remove),
- .driver = {
- .owner = THIS_MODULE,
- .name = "twl6040",
- },
+ .id_table = twl6040_i2c_id,
};
-module_platform_driver(twl6040_driver);
+module_i2c_driver(twl6040_driver);
MODULE_DESCRIPTION("TWL6040 MFD");
MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-25 16:42:16 +0300