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SubjectRe: [PATCH] mfd: DA9030 USB charge pump mode selection support
Dear All,

Anyone had a chance to have a look at this?
I have a board config waiting on this or something with the same
functionality getting merged.

Thanks,

Jonathan
> From: Jonathan Cameron <jic23@cam.ac.uk>
>
> Add support for changing the mode of the da9030 usb charge pump
>
> Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
>
> --
>
> This version simply adds the functionality to the da903x mfd driver
> core. If anyone can suggest a way round simply maintaining a
> global pointer to the device it would be good.
>
> To be able to call this from a board config file the driver must be
> built in rather than a module but enforcing that is down to the
> board Kconfig entry.
>
> diff --git a/drivers/mfd/da903x.c b/drivers/mfd/da903x.c
> index 0b5bd85..600e884 100644
> --- a/drivers/mfd/da903x.c
> +++ b/drivers/mfd/da903x.c
> @@ -472,6 +472,32 @@ failed:
> return ret;
> }
>
> +/* Single device assumption */
> +struct device *da9030_mfd_dev;
> +
> +int da9030_set_usb_charge_pump_mode(int mode)
> +{
> + uint8_t val = 0;
> +
> + if (da9030_mfd_dev == NULL)
> + return -EINVAL;
> +
> + switch (mode) {
> + case DA9030_USBPUMP_AUTO:
> + val = 0;
> + break;
> + case DA9030_USBPUMP_CHARGE_PUMP:
> + val = 0x40;
> + break;
> + case DA9030_USBPUMP_CURRENT_SOURCE:
> + val = 0x80;
> + break;
> + }
> +
> + return da903x_write(da9030_mfd_dev, DA9030_USBPUMP_REG, val);
> +}
> +EXPORT_SYMBOL_GPL(da9030_set_usb_charge_pump_mode);
> +
> static int __devinit da903x_probe(struct i2c_client *client,
> const struct i2c_device_id *id)
> {
> @@ -487,6 +513,7 @@ static int __devinit da903x_probe(struct i2c_client *client,
> chip->client = client;
> chip->dev = &client->dev;
> chip->ops = &da903x_ops[id->driver_data];
> + da9030_mfd_dev = &client->dev;
>
> mutex_init(&chip->lock);
> INIT_WORK(&chip->irq_work, da903x_irq_work);
> @@ -547,6 +574,7 @@ static struct i2c_driver da903x_driver = {
>
> static int __init da903x_init(void)
> {
> + da9030_mfd_dev = NULL;
> return i2c_add_driver(&da903x_driver);
> }
> module_init(da903x_init);
> diff --git a/include/linux/mfd/da903x.h b/include/linux/mfd/da903x.h
> index cad314c..0f12331 100644
> --- a/include/linux/mfd/da903x.h
> +++ b/include/linux/mfd/da903x.h
> @@ -189,6 +190,13 @@ extern int da903x_unregister_notifier(struct device *dev,
>
> extern int da903x_query_status(struct device *dev, unsigned int status);
>
> +#define DA9030_USBPUMP_AUTO 1
> +#define DA9030_USBPUMP_CHARGE_PUMP 2
> +#define DA9030_USBPUMP_CURRENT_SOURCE 3
> +
> +#define DA9030_USBPUMP_REG 0x19
> +
> +int da9030_set_usb_charge_pump_mode(int mode);
>
> /* NOTE: the two functions below are not intended for use outside
> * of the DA9034 sub-device drivers
> --
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