[RFC 2/7] MFD: twl6040: Convert to i2c driver, and separate it from twl core
From: Peter Ujfalusi
Date: Thu Feb 02 2012 - 07:18:42 EST
twl6040 is a separate chip, it is not part of the twl6030
PMIC.
Complete the separation of the twl6040 from the twl core.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
---
arch/arm/mach-omap2/board-4430sdp.c | 12 ++--
arch/arm/mach-omap2/board-generic.c | 2 +-
arch/arm/mach-omap2/board-omap4panda.c | 13 ++--
arch/arm/mach-omap2/twl-common.c | 37 ++++++++--
arch/arm/mach-omap2/twl-common.h | 10 +--
drivers/input/misc/Kconfig | 1 -
drivers/input/misc/twl6040-vibra.c | 4 +-
drivers/mfd/Kconfig | 2 +-
drivers/mfd/twl6040-core.c | 124 ++++++++++++++++++++++++-------
include/linux/i2c/twl.h | 12 ---
include/linux/mfd/twl6040.h | 25 +++++++
sound/soc/codecs/twl6040.c | 3 +-
12 files changed, 174 insertions(+), 71 deletions(-)
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 7eaeb08..f4ac553 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -20,6 +20,7 @@
#include <linux/usb/otg.h>
#include <linux/spi/spi.h>
#include <linux/i2c/twl.h>
+#include <linux/mfd/twl6040.h>
#include <linux/gpio_keys.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>
@@ -554,7 +555,7 @@ static struct regulator_init_data sdp4430_vusim = {
},
};
-static struct twl4030_codec_data twl6040_codec = {
+static struct twl6040_codec_data twl6040_codec = {
/* single-step ramp for headset and handsfree */
.hs_left_step = 0x0f,
.hs_right_step = 0x0f,
@@ -562,7 +563,7 @@ static struct twl4030_codec_data twl6040_codec = {
.hf_right_step = 0x1d,
};
-static struct twl4030_vibra_data twl6040_vibra = {
+static struct twl6040_vibra_data twl6040_vibra = {
.vibldrv_res = 8,
.vibrdrv_res = 3,
.viblmotor_res = 10,
@@ -571,16 +572,14 @@ static struct twl4030_vibra_data twl6040_vibra = {
.vddvibr_uV = 0, /* fixed volt supply - VBAT */
};
-static struct twl4030_audio_data twl6040_audio = {
+static struct twl6040_platform_data twl6040_data = {
.codec = &twl6040_codec,
.vibra = &twl6040_vibra,
.audpwron_gpio = 127,
- .naudint_irq = OMAP44XX_IRQ_SYS_2N,
.irq_base = TWL6040_CODEC_IRQ_BASE,
};
static struct twl4030_platform_data sdp4430_twldata = {
- .audio = &twl6040_audio,
/* Regulators */
.vusim = &sdp4430_vusim,
.vaux1 = &sdp4430_vaux1,
@@ -611,7 +610,8 @@ static int __init omap4_i2c_init(void)
TWL_COMMON_REGULATOR_VCXIO |
TWL_COMMON_REGULATOR_VUSB |
TWL_COMMON_REGULATOR_CLK32KG);
- omap4_pmic_init("twl6030", &sdp4430_twldata);
+ omap4_pmic_init("twl6030", &sdp4430_twldata,
+ &twl6040_data, OMAP44XX_IRQ_SYS_2N);
omap_register_i2c_bus(2, 400, NULL, 0);
omap_register_i2c_bus(3, 400, sdp4430_i2c_3_boardinfo,
ARRAY_SIZE(sdp4430_i2c_3_boardinfo));
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index d587560..68b9d8a 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -35,7 +35,7 @@ static struct twl4030_platform_data sdp4430_twldata = {
static void __init omap4_i2c_init(void)
{
- omap4_pmic_init("twl6030", &sdp4430_twldata);
+ omap4_pmic_init("twl6030", &sdp4430_twldata, NULL, 0);
}
#endif
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index eada955..da31a72 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -25,6 +25,7 @@
#include <linux/gpio.h>
#include <linux/usb/otg.h>
#include <linux/i2c/twl.h>
+#include <linux/mfd/twl6040.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>
#include <linux/wl12xx.h>
@@ -277,7 +278,7 @@ static int __init omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers)
return 0;
}
-static struct twl4030_codec_data twl6040_codec = {
+static struct twl6040_codec_data twl6040_codec = {
/* single-step ramp for headset and handsfree */
.hs_left_step = 0x0f,
.hs_right_step = 0x0f,
@@ -285,17 +286,14 @@ static struct twl4030_codec_data twl6040_codec = {
.hf_right_step = 0x1d,
};
-static struct twl4030_audio_data twl6040_audio = {
+static struct twl6040_platform_data twl6040_data = {
.codec = &twl6040_codec,
.audpwron_gpio = 127,
- .naudint_irq = OMAP44XX_IRQ_SYS_2N,
.irq_base = TWL6040_CODEC_IRQ_BASE,
};
/* Panda board uses the common PMIC configuration */
-static struct twl4030_platform_data omap4_panda_twldata = {
- .audio = &twl6040_audio,
-};
+static struct twl4030_platform_data omap4_panda_twldata;
/*
* Display monitor features are burnt in their EEPROM as EDID data. The EEPROM
@@ -319,7 +317,8 @@ static int __init omap4_panda_i2c_init(void)
TWL_COMMON_REGULATOR_VCXIO |
TWL_COMMON_REGULATOR_VUSB |
TWL_COMMON_REGULATOR_CLK32KG);
- omap4_pmic_init("twl6030", &omap4_panda_twldata);
+ omap4_pmic_init("twl6030", &omap4_panda_twldata,
+ &twl6040_data, OMAP44XX_IRQ_SYS_2N);
omap_register_i2c_bus(2, 400, NULL, 0);
/*
* Bus 3 is attached to the DVI port where devices like the pico DLP
diff --git a/arch/arm/mach-omap2/twl-common.c b/arch/arm/mach-omap2/twl-common.c
index 10b20c6..bc03154 100644
--- a/arch/arm/mach-omap2/twl-common.c
+++ b/arch/arm/mach-omap2/twl-common.c
@@ -37,6 +37,16 @@ static struct i2c_board_info __initdata pmic_i2c_board_info = {
.flags = I2C_CLIENT_WAKE,
};
+static struct i2c_board_info __initdata omap4_i2c1_board_info[] = {
+ {
+ .addr = 0x48,
+ .flags = I2C_CLIENT_WAKE,
+ },
+ {
+ I2C_BOARD_INFO("twl6040", 0x4b),
+ },
+};
+
void __init omap_pmic_init(int bus, u32 clkrate,
const char *pmic_type, int pmic_irq,
struct twl4030_platform_data *pmic_data)
@@ -49,14 +59,31 @@ void __init omap_pmic_init(int bus, u32 clkrate,
omap_register_i2c_bus(bus, clkrate, &pmic_i2c_board_info, 1);
}
+void omap4_pmic_init(const char *pmic_type,
+ struct twl4030_platform_data *pmic_data,
+ struct twl6040_platform_data *twl6040_data, int twl6040_irq)
+{
+ /* PMIC part*/
+ strncpy(omap4_i2c1_board_info[0].type, pmic_type,
+ sizeof(omap4_i2c1_board_info[0].type));
+ omap4_i2c1_board_info[0].irq = OMAP44XX_IRQ_SYS_1N;
+ omap4_i2c1_board_info[0].platform_data = pmic_data;
+
+ /* TWL6040 audio IC part */
+ omap4_i2c1_board_info[1].irq = twl6040_irq;
+ omap4_i2c1_board_info[1].platform_data = twl6040_data;
+
+ omap_register_i2c_bus(1, 400, omap4_i2c1_board_info, 2);
+
+}
+
void __init omap_pmic_late_init(void)
{
/* Init the OMAP TWL parameters (if PMIC has been registerd) */
- if (!pmic_i2c_board_info.irq)
- return;
-
- omap3_twl_init();
- omap4_twl_init();
+ if (pmic_i2c_board_info.irq)
+ omap3_twl_init();
+ if (omap4_i2c1_board_info[0].irq)
+ omap4_twl_init();
}
#if defined(CONFIG_ARCH_OMAP3)
diff --git a/arch/arm/mach-omap2/twl-common.h b/arch/arm/mach-omap2/twl-common.h
index 275dde8..0962748 100644
--- a/arch/arm/mach-omap2/twl-common.h
+++ b/arch/arm/mach-omap2/twl-common.h
@@ -29,6 +29,7 @@
struct twl4030_platform_data;
+struct twl6040_platform_data;
void omap_pmic_init(int bus, u32 clkrate, const char *pmic_type, int pmic_irq,
struct twl4030_platform_data *pmic_data);
@@ -46,12 +47,9 @@ static inline void omap3_pmic_init(const char *pmic_type,
omap_pmic_init(1, 2600, pmic_type, INT_34XX_SYS_NIRQ, pmic_data);
}
-static inline void omap4_pmic_init(const char *pmic_type,
- struct twl4030_platform_data *pmic_data)
-{
- /* Phoenix Audio IC needs I2C1 to start with 400 KHz or less */
- omap_pmic_init(1, 400, pmic_type, OMAP44XX_IRQ_SYS_1N, pmic_data);
-}
+void omap4_pmic_init(const char *pmic_type,
+ struct twl4030_platform_data *pmic_data,
+ struct twl6040_platform_data *audio_data, int twl6040_irq);
void omap3_pmic_get_config(struct twl4030_platform_data *pmic_data,
u32 pdata_flags, u32 regulators_flags);
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 7b46781..6a9ee24 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -368,7 +368,6 @@ config INPUT_TWL4030_VIBRA
config INPUT_TWL6040_VIBRA
tristate "Support for TWL6040 Vibrator"
- depends on TWL4030_CORE
select TWL6040_CORE
select INPUT_FF_MEMLESS
help
diff --git a/drivers/input/misc/twl6040-vibra.c b/drivers/input/misc/twl6040-vibra.c
index 45874fe..14e94f5 100644
--- a/drivers/input/misc/twl6040-vibra.c
+++ b/drivers/input/misc/twl6040-vibra.c
@@ -28,7 +28,7 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/workqueue.h>
-#include <linux/i2c/twl.h>
+#include <linux/input.h>
#include <linux/mfd/twl6040.h>
#include <linux/slab.h>
#include <linux/delay.h>
@@ -257,7 +257,7 @@ static SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops, twl6040_vibra_suspend, NULL);
static int __devinit twl6040_vibra_probe(struct platform_device *pdev)
{
- struct twl4030_vibra_data *pdata = pdev->dev.platform_data;
+ struct twl6040_vibra_data *pdata = pdev->dev.platform_data;
struct vibra_info *info;
int ret;
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index cd13e9f..203e9bc 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -252,7 +252,7 @@ config TWL6030_PWM
config TWL6040_CORE
bool
- depends on TWL4030_CORE && GENERIC_HARDIRQS
+ depends on I2C && GENERIC_HARDIRQS
select MFD_CORE
default n
diff --git a/drivers/mfd/twl6040-core.c b/drivers/mfd/twl6040-core.c
index dda8629..21d6a99 100644
--- a/drivers/mfd/twl6040-core.c
+++ b/drivers/mfd/twl6040-core.c
@@ -30,12 +30,60 @@
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/delay.h>
-#include <linux/i2c/twl.h>
+#include <linux/i2c.h>
#include <linux/mfd/core.h>
#include <linux/mfd/twl6040.h>
#define VIBRACTRL_MEMBER(reg) ((reg == TWL6040_REG_VIBCTLL) ? 0 : 1)
+static int twl6040_i2c_read(struct i2c_client *i2c, u8 *value, u8 reg)
+{
+ struct i2c_msg msg[2];
+ int ret;
+
+ msg[0].addr = i2c->addr;
+ msg[0].len = 1;
+ msg[0].flags = 0;
+ msg[0].buf = ®
+
+ msg[1].addr = i2c->addr;
+ msg[1].flags = I2C_M_RD;
+ msg[1].len = 1;
+ msg[1].buf = value;
+ ret = i2c_transfer(i2c->adapter, msg, 2);
+
+ if (ret < 0)
+ return ret;
+ if (ret != 2)
+ return -EIO;
+
+ return 0;
+}
+
+static int twl6040_i2c_write(struct i2c_client *i2c, u8 value, u8 reg)
+{
+ struct i2c_msg msg;
+ u8 data[2];
+ int ret;
+
+ data[0] = reg;
+ data[1] = value;
+
+ msg.addr = i2c->addr;
+ msg.len = 2;
+ msg.flags = 0;
+ msg.buf = data;
+
+ ret = i2c_transfer(i2c->adapter, &msg, 1);
+
+ if (ret < 0)
+ return ret;
+ if (ret != 1)
+ return -EIO;
+
+ return 0;
+}
+
int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg)
{
int ret;
@@ -47,7 +95,7 @@ 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 = twl6040_i2c_read(twl6040->control_data, &val, reg);
if (ret < 0) {
mutex_unlock(&twl6040->io_mutex);
return ret;
@@ -64,7 +112,7 @@ 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 = twl6040_i2c_write(twl6040->control_data, val, reg);
/* Cache the vibra control registers */
if (reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR)
twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)] = val;
@@ -80,12 +128,12 @@ int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask)
u8 val;
mutex_lock(&twl6040->io_mutex);
- ret = twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &val, reg);
+ ret = twl6040_i2c_read(twl6040->control_data, &val, reg);
if (ret)
goto out;
val |= mask;
- ret = twl_i2c_write_u8(TWL_MODULE_AUDIO_VOICE, val, reg);
+ ret = twl6040_i2c_write(twl6040->control_data, val, reg);
out:
mutex_unlock(&twl6040->io_mutex);
return ret;
@@ -98,12 +146,12 @@ int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask)
u8 val;
mutex_lock(&twl6040->io_mutex);
- ret = twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &val, reg);
+ ret = twl6040_i2c_read(twl6040->control_data, &val, reg);
if (ret)
goto out;
val &= ~mask;
- ret = twl_i2c_write_u8(TWL_MODULE_AUDIO_VOICE, val, reg);
+ ret = twl6040_i2c_write(twl6040->control_data, val, reg);
out:
mutex_unlock(&twl6040->io_mutex);
return ret;
@@ -468,21 +516,22 @@ static struct resource twl6040_codec_rsrc[] = {
},
};
-static int __devinit twl6040_probe(struct platform_device *pdev)
+static int __devinit twl6040_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
{
- struct twl4030_audio_data *pdata = pdev->dev.platform_data;
+ 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;
}
@@ -490,10 +539,11 @@ static int __devinit twl6040_probe(struct platform_device *pdev)
if (!twl6040)
return -ENOMEM;
- platform_set_drvdata(pdev, twl6040);
+ i2c_set_clientdata(client, twl6040);
- twl6040->dev = &pdev->dev;
- twl6040->irq = pdata->naudint_irq;
+ twl6040->dev = &client->dev;
+ twl6040->control_data = client;
+ twl6040->irq = client->irq;
twl6040->irq_base = pdata->irq_base;
mutex_init(&twl6040->mutex);
@@ -562,12 +612,12 @@ 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;
}
@@ -582,14 +632,14 @@ gpio2_err:
if (gpio_is_valid(twl6040->audpwron))
gpio_free(twl6040->audpwron);
gpio1_err:
- platform_set_drvdata(pdev, NULL);
+ i2c_set_clientdata(client, NULL);
kfree(twl6040);
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);
@@ -600,23 +650,41 @@ 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);
+ mfd_remove_devices(&client->dev);
+ i2c_set_clientdata(client, NULL);
kfree(twl6040);
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);
+static int __devinit twl6040_init(void)
+{
+ return i2c_add_driver(&twl6040_driver);
+}
+module_init(twl6040_init);
+
+static void __devexit twl6040_exit(void)
+{
+ i2c_del_driver(&twl6040_driver);
+}
+
+module_exit(twl6040_exit);
MODULE_DESCRIPTION("TWL6040 MFD");
MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@xxxxxx>");
diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index 78d3465..3826a53 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -666,23 +666,11 @@ struct twl4030_codec_data {
unsigned int check_defaults:1;
unsigned int reset_registers:1;
unsigned int hs_extmute:1;
- u16 hs_left_step;
- u16 hs_right_step;
- u16 hf_left_step;
- u16 hf_right_step;
void (*set_hs_extmute)(int mute);
};
struct twl4030_vibra_data {
unsigned int coexist;
-
- /* twl6040 */
- unsigned int vibldrv_res; /* left driver resistance */
- unsigned int vibrdrv_res; /* right driver resistance */
- unsigned int viblmotor_res; /* left motor resistance */
- unsigned int vibrmotor_res; /* right motor resistance */
- int vddvibl_uV; /* VDDVIBL volt, set 0 for fixed reg */
- int vddvibr_uV; /* VDDVIBR volt, set 0 for fixed reg */
};
struct twl4030_audio_data {
diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h
index 2463c261..72f530f 100644
--- a/include/linux/mfd/twl6040.h
+++ b/include/linux/mfd/twl6040.h
@@ -174,7 +174,32 @@
#define TWL6040_SYSCLK_SEL_LPPLL 0
#define TWL6040_SYSCLK_SEL_HPPLL 1
+struct twl6040_codec_data {
+ u16 hs_left_step;
+ u16 hs_right_step;
+ u16 hf_left_step;
+ u16 hf_right_step;
+};
+
+struct twl6040_vibra_data {
+ unsigned int vibldrv_res; /* left driver resistance */
+ unsigned int vibrdrv_res; /* right driver resistance */
+ unsigned int viblmotor_res; /* left motor resistance */
+ unsigned int vibrmotor_res; /* right motor resistance */
+ int vddvibl_uV; /* VDDVIBL volt, set 0 for fixed reg */
+ int vddvibr_uV; /* VDDVIBR volt, set 0 for fixed reg */
+};
+
+struct twl6040_platform_data {
+ int audpwron_gpio; /* audio power-on gpio */
+ unsigned int irq_base;
+
+ struct twl6040_codec_data *codec;
+ struct twl6040_vibra_data *vibra;
+};
+
struct twl6040 {
+ struct i2c_client *control_data;
struct device *dev;
struct mutex mutex;
struct mutex io_mutex;
diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c
index ece47ed..3694e9f 100644
--- a/sound/soc/codecs/twl6040.c
+++ b/sound/soc/codecs/twl6040.c
@@ -26,7 +26,6 @@
#include <linux/pm.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
-#include <linux/i2c/twl.h>
#include <linux/mfd/twl6040.h>
#include <sound/core.h>
@@ -1515,7 +1514,7 @@ static int twl6040_resume(struct snd_soc_codec *codec)
static int twl6040_probe(struct snd_soc_codec *codec)
{
struct twl6040_data *priv;
- struct twl4030_codec_data *pdata = dev_get_platdata(codec->dev);
+ struct twl6040_codec_data *pdata = dev_get_platdata(codec->dev);
struct platform_device *pdev = container_of(codec->dev,
struct platform_device, dev);
int ret = 0;
--
1.7.8.4
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