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 <[email protected]>
---
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;
}
diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
index 5cd2b2ebbbd3..7642f740272b 100644
--- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
@@ -140,7 +140,6 @@ struct meson_dw_hdmi {
struct reset_control *hdmitx_apb;
struct reset_control *hdmitx_ctrl;
struct reset_control *hdmitx_phy;
- struct regulator *hdmi_supply;
u32 irq_stat;
struct dw_hdmi *hdmi;
struct drm_bridge *bridge;
@@ -665,11 +664,6 @@ static void meson_dw_hdmi_init(struct meson_dw_hdmi *meson_dw_hdmi)
}
-static void meson_disable_regulator(void *data)
-{
- regulator_disable(data);
-}
-
static void meson_disable_clk(void *data)
{
clk_disable_unprepare(data);
@@ -723,20 +717,9 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
meson_dw_hdmi->data = match;
dw_plat_data = &meson_dw_hdmi->dw_plat_data;
- meson_dw_hdmi->hdmi_supply = devm_regulator_get_optional(dev, "hdmi");
- if (IS_ERR(meson_dw_hdmi->hdmi_supply)) {
- if (PTR_ERR(meson_dw_hdmi->hdmi_supply) == -EPROBE_DEFER)
- return -EPROBE_DEFER;
- meson_dw_hdmi->hdmi_supply = NULL;
- } else {
- ret = regulator_enable(meson_dw_hdmi->hdmi_supply);
- if (ret)
- return ret;
- ret = devm_add_action_or_reset(dev, meson_disable_regulator,
- meson_dw_hdmi->hdmi_supply);
- if (ret)
- return ret;
- }
+ ret = devm_regulator_get_enable_optional(dev, "hdmi");
+ if (ret != -ENODEV)
+ return ret;
meson_dw_hdmi->hdmitx_apb = devm_reset_control_get_exclusive(dev,
"hdmitx_apb");
--
2.37.1
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
Hi Matti,
On Fri, 19 Aug 2022 at 21:18, Matti Vaittinen <[email protected]> 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 <[email protected]>
>
> ---
> 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.
For the sii902x part, please add my r-b.
Reviewed-by: Robert Foss <[email protected]>
> diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> index 5cd2b2ebbbd3..7642f740272b 100644
> --- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
> +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> @@ -140,7 +140,6 @@ struct meson_dw_hdmi {
> struct reset_control *hdmitx_apb;
> struct reset_control *hdmitx_ctrl;
> struct reset_control *hdmitx_phy;
> - struct regulator *hdmi_supply;
> u32 irq_stat;
> struct dw_hdmi *hdmi;
> struct drm_bridge *bridge;
> @@ -665,11 +664,6 @@ static void meson_dw_hdmi_init(struct meson_dw_hdmi *meson_dw_hdmi)
>
> }
>
> -static void meson_disable_regulator(void *data)
> -{
> - regulator_disable(data);
> -}
> -
> static void meson_disable_clk(void *data)
> {
> clk_disable_unprepare(data);
> @@ -723,20 +717,9 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
> meson_dw_hdmi->data = match;
> dw_plat_data = &meson_dw_hdmi->dw_plat_data;
>
> - meson_dw_hdmi->hdmi_supply = devm_regulator_get_optional(dev, "hdmi");
> - if (IS_ERR(meson_dw_hdmi->hdmi_supply)) {
> - if (PTR_ERR(meson_dw_hdmi->hdmi_supply) == -EPROBE_DEFER)
> - return -EPROBE_DEFER;
> - meson_dw_hdmi->hdmi_supply = NULL;
> - } else {
> - ret = regulator_enable(meson_dw_hdmi->hdmi_supply);
> - if (ret)
> - return ret;
> - ret = devm_add_action_or_reset(dev, meson_disable_regulator,
> - meson_dw_hdmi->hdmi_supply);
> - if (ret)
> - return ret;
> - }
> + ret = devm_regulator_get_enable_optional(dev, "hdmi");
> + if (ret != -ENODEV)
> + return ret;
>
> meson_dw_hdmi->hdmitx_apb = devm_reset_control_get_exclusive(dev,
> "hdmitx_apb");
> --
> 2.37.1
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 <[email protected]> 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 <[email protected]>
>>
>> ---
>> 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 <[email protected]>
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! ~~
Discuss - Estimate - Plan - Report and finally accomplish this:
void do_work(int time) __attribute__ ((const));