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    Subject[PATCH 7/7] MFD: TWL6040: Add regulator support for VIO, V2V1 supplies
    Date
    twl6040 has three power supply source:
    VBAT needs to be connected to VBAT, VIO, and V2V1.
    Add regulator support for the VIO, V2V1 supplies.
    Initially handle the two supply together with bulk commands.

    Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
    Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
    ---
    drivers/mfd/twl6040-core.c | 33 +++++++++++++++++++++++++++++----
    include/linux/mfd/twl6040.h | 2 ++
    2 files changed, 31 insertions(+), 4 deletions(-)

    diff --git a/drivers/mfd/twl6040-core.c b/drivers/mfd/twl6040-core.c
    index ea00c69..566f6e0 100644
    --- a/drivers/mfd/twl6040-core.c
    +++ b/drivers/mfd/twl6040-core.c
    @@ -27,6 +27,7 @@
    #include <linux/types.h>
    #include <linux/slab.h>
    #include <linux/kernel.h>
    +#include <linux/err.h>
    #include <linux/platform_device.h>
    #include <linux/gpio.h>
    #include <linux/delay.h>
    @@ -35,8 +36,10 @@
    #include <linux/err.h>
    #include <linux/mfd/core.h>
    #include <linux/mfd/twl6040.h>
    +#include <linux/regulator/consumer.h>

    #define VIBRACTRL_MEMBER(reg) ((reg == TWL6040_REG_VIBCTLL) ? 0 : 1)
    +#define TWL6040_NUM_SUPPLIES (2)

    int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg)
    {
    @@ -506,6 +509,21 @@ static int __devinit twl6040_probe(struct i2c_client *client,

    i2c_set_clientdata(client, twl6040);

    + twl6040->supplies[0].supply = "vio";
    + twl6040->supplies[1].supply = "v2v1";
    + ret = regulator_bulk_get(&client->dev, TWL6040_NUM_SUPPLIES,
    + twl6040->supplies);
    + if (ret != 0) {
    + dev_err(&client->dev, "Failed to get supplies: %d\n", ret);
    + goto regulator_get_err;
    + }
    +
    + ret = regulator_bulk_enable(TWL6040_NUM_SUPPLIES, twl6040->supplies);
    + if (ret != 0) {
    + dev_err(&client->dev, "Failed to enable supplies: %d\n", ret);
    + goto power_err;
    + }
    +
    twl6040->dev = &client->dev;
    twl6040->irq = client->irq;
    twl6040->irq_base = pdata->irq_base;
    @@ -526,13 +544,13 @@ static int __devinit twl6040_probe(struct i2c_client *client,
    ret = gpio_request_one(twl6040->audpwron, GPIOF_OUT_INIT_LOW,
    "audpwron");
    if (ret)
    - goto gpio1_err;
    + goto gpio_err;
    }

    /* codec interrupt */
    ret = twl6040_irq_init(twl6040);
    if (ret)
    - goto gpio2_err;
    + goto irq_init_err;

    ret = request_threaded_irq(twl6040->irq_base + TWL6040_IRQ_READY,
    NULL, twl6040_naudint_handler, 0,
    @@ -592,10 +610,14 @@ mfd_err:
    free_irq(twl6040->irq_base + TWL6040_IRQ_READY, twl6040);
    irq_err:
    twl6040_irq_exit(twl6040);
    -gpio2_err:
    +irq_init_err:
    if (gpio_is_valid(twl6040->audpwron))
    gpio_free(twl6040->audpwron);
    -gpio1_err:
    +gpio_err:
    + regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies);
    +power_err:
    + regulator_bulk_free(TWL6040_NUM_SUPPLIES, twl6040->supplies);
    +regulator_get_err:
    i2c_set_clientdata(client, NULL);
    regmap_exit(twl6040->regmap);
    err:
    @@ -619,6 +641,9 @@ static int __devexit twl6040_remove(struct i2c_client *client)
    i2c_set_clientdata(client, NULL);
    regmap_exit(twl6040->regmap);

    + regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies);
    + regulator_bulk_free(TWL6040_NUM_SUPPLIES, twl6040->supplies);
    +
    return 0;
    }

    diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h
    index e3ff28d..2acdd7d 100644
    --- a/include/linux/mfd/twl6040.h
    +++ b/include/linux/mfd/twl6040.h
    @@ -27,6 +27,7 @@

    #include <linux/interrupt.h>
    #include <linux/mfd/core.h>
    +#include <linux/regulator/consumer.h>

    #define TWL6040_REG_ASICID 0x01
    #define TWL6040_REG_ASICREV 0x02
    @@ -203,6 +204,7 @@ struct regmap;
    struct twl6040 {
    struct device *dev;
    struct regmap *regmap;
    + struct regulator_bulk_data supplies[2]; /* supplies for vio, v2v1 */
    struct mutex mutex;
    struct mutex io_mutex;
    struct mutex irq_mutex;
    --
    1.7.8.4


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