> The STMPE has VCC and VIO supply lines, and sometimes (as on
> Ux500) this comes from a software-controlled regulator. Make
> it possible to supply the STMPE with power from these
> regulators.
>
> Signed-off-by: Linus Walleij <[email protected]>
> ---
> drivers/mfd/stmpe.c | 18 ++++++++++++++++++
> include/linux/mfd/stmpe.h | 5 +++++
> 2 files changed, 23 insertions(+)
[...]
> + stmpe->vcc = devm_regulator_get_optional(ci->dev, "vcc");
> + if (!IS_ERR(stmpe->vcc)) {
> + ret = regulator_enable(stmpe->vcc);
> + if (ret)
> + dev_warn(ci->dev, "failed to enable VCC supply\n");
> + }
> + stmpe->vio = devm_regulator_get_optional(ci->dev, "vio");
> + if (!IS_ERR(stmpe->vio)) {
> + ret = regulator_enable(stmpe->vio);
> + if (ret)
> + dev_warn(ci->dev, "failed to enable VIO supply\n");
> + }
[...]
> int stmpe_remove(struct stmpe *stmpe)
> {
> + if (!IS_ERR(stmpe->vio))
> + regulator_disable(stmpe->vio);
> + if (!IS_ERR(stmpe->vcc))
> + regulator_disable(stmpe->vcc);
> +
Genuine question:
Doesn't the regulator core take care of this for you on removal?
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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