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SubjectRe: [PATCH v3 03/14] gpu: drm: simplify drivers using devm_regulator_*get_enable*()
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On 8/29/22 17:25, Robert Foss wrote:

Thanks for the review Robert.

> Hi Matti,
>
> On Fri, 19 Aug 2022 at 21:18, Matti Vaittinen <mazziesaccount@gmail.com> wrote:
>>
>> Simplify drivers using managed "regulator get and enable".
>>
>> meson:
>> Use the devm_regulator_get_enable_optional(). Also drop the seemingly
>> unused struct member 'hdmi_supply'.
>>
>> sii902x:
>> Simplify using devm_regulator_bulk_get_enable()
>>
>> Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
>>
>> ---
>> v2 => v3:
>> No changes
>>
>> RFCv1 => v2:
>> - Change also sii902x to use devm_regulator_bulk_get_enable()
>>
>> Please note - this is only compile-tested due to the lack of HW. Careful
>> review and testing is _highly_ appreciated.
>> ---
>> drivers/gpu/drm/bridge/sii902x.c | 22 +++-------------------
>> drivers/gpu/drm/meson/meson_dw_hdmi.c | 23 +++--------------------
>> 2 files changed, 6 insertions(+), 39 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
>> index 7ab38d734ad6..162f9c87eeb2 100644
>> --- a/drivers/gpu/drm/bridge/sii902x.c
>> +++ b/drivers/gpu/drm/bridge/sii902x.c
>> @@ -171,7 +171,6 @@ struct sii902x {
>> struct drm_connector connector;
>> struct gpio_desc *reset_gpio;
>> struct i2c_mux_core *i2cmux;
>> - struct regulator_bulk_data supplies[2];
>> bool sink_is_hdmi;
>> /*
>> * Mutex protects audio and video functions from interfering
>> @@ -1072,6 +1071,7 @@ static int sii902x_probe(struct i2c_client *client,
>> struct device *dev = &client->dev;
>> struct device_node *endpoint;
>> struct sii902x *sii902x;
>> + static const char * const supplies[] = {"iovcc", "cvcc12"};
>> int ret;
>>
>> ret = i2c_check_functionality(client->adapter,
>> @@ -1122,27 +1122,13 @@ static int sii902x_probe(struct i2c_client *client,
>>
>> mutex_init(&sii902x->mutex);
>>
>> - sii902x->supplies[0].supply = "iovcc";
>> - sii902x->supplies[1].supply = "cvcc12";
>> - ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(sii902x->supplies),
>> - sii902x->supplies);
>> - if (ret < 0)
>> - return ret;
>> -
>> - ret = regulator_bulk_enable(ARRAY_SIZE(sii902x->supplies),
>> - sii902x->supplies);
>> + ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(supplies), supplies);
>> if (ret < 0) {
>> dev_err_probe(dev, ret, "Failed to enable supplies");
>> return ret;
>> }
>>
>> - ret = sii902x_init(sii902x);
>> - if (ret < 0) {
>> - regulator_bulk_disable(ARRAY_SIZE(sii902x->supplies),
>> - sii902x->supplies);
>> - }
>> -
>> - return ret;
>> + return sii902x_init(sii902x);
>> }
>>
>> static int sii902x_remove(struct i2c_client *client)
>> @@ -1152,8 +1138,6 @@ static int sii902x_remove(struct i2c_client *client)
>>
>> i2c_mux_del_adapters(sii902x->i2cmux);
>> drm_bridge_remove(&sii902x->bridge);
>> - regulator_bulk_disable(ARRAY_SIZE(sii902x->supplies),
>> - sii902x->supplies);
>>
>> return 0;
>> }
>
> Ideally this patch would be split into two parts here, due to
> maintainership boundaries.

Ok. I will in any case respin this series when the dependency patches
from Mark's tree have been merged to the -rc1. I can split this to
patch/driver if it is preferred. I just though I'll decrease amount of
mails by squashing these almost trivial changes.

>
> For the sii902x part, please add my r-b.
>
> Reviewed-by: Robert Foss <robert.foss@linaro.org>
Thanks.

Best Regards
-- Matti

--
Matti Vaittinen
Linux kernel developer at ROHM Semiconductors
Oulu Finland

~~ When things go utterly wrong vim users can always type :help! ~~

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