* [PATCH 2/2] platform/x86: int3472: Handle GPIO type 0x10 (DOVDD) for OV5675
@ 2026-02-10 8:18 Leif Skunberg
2026-02-10 9:53 ` johannes.goede
0 siblings, 1 reply; 3+ messages in thread
From: Leif Skunberg @ 2026-02-10 8:18 UTC (permalink / raw)
To: hdegoede; +Cc: platform-driver-x86, linux-kernel, Leif Skunberg
The Lenovo ThinkPad X1 Fold 16 Gen 1 has an OV5675 sensor (ACPI HID
OVTI5675) behind an INT3472 discrete PMIC controller. The INT3472
_DSM returns GPIO type 0x10 for one of the pins, which controls the
DOVDD (digital I/O power) regulator enable.
Type 0x10 is not currently handled by the driver, causing the GPIO to
be ignored with a warning. Add INT3472_GPIO_TYPE_DOVDD (0x10) and
handle it by:
1. Adding an entry to int3472_gpio_map[] that maps the DOVDD type to
INT3472_GPIO_TYPE_POWER_ENABLE for the OVTI5675 HID. The con_id
is set to "vio" because "dovdd" exceeds GPIO_SUPPLY_NAME_LENGTH.
2. Adding a fallback case in int3472_get_con_id_and_polarity() so
devices without a gpio_map match still get a valid con_id.
3. Adding INT3472_GPIO_TYPE_DOVDD to both switch statements in
skl_int3472_handle_gpio_resources() so the GPIO is acquired via
temp lookup and registered as a regulator.
Signed-off-by: Leif Skunberg <diamondback@cohunt.app>
---
drivers/platform/x86/intel/int3472/discrete.c | 14 ++++++++++++++
include/linux/platform_data/x86/int3472.h | 1 +
2 files changed, 15 insertions(+)
diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c
index 1505fc3ef..0a293e73c 100644
--- a/drivers/platform/x86/intel/int3472/discrete.c
+++ b/drivers/platform/x86/intel/int3472/discrete.c
@@ -164,6 +164,13 @@ static const struct int3472_gpio_map int3472_gpio_map[] = {
.con_id = "dvdd",
.enable_time_us = 45 * USEC_PER_MSEC,
},
+ { /* ov5675: DOVDD is a power regulator enable */
+ .hid = "OVTI5675",
+ .type_from = INT3472_GPIO_TYPE_DOVDD,
+ .type_to = INT3472_GPIO_TYPE_POWER_ENABLE,
+ .con_id = "vio",
+ .enable_time_us = GPIO_REGULATOR_ENABLE_TIME,
+ },
};
static void int3472_get_con_id_and_polarity(struct int3472_discrete_device *int3472, u8 *type,
@@ -223,6 +230,10 @@ static void int3472_get_con_id_and_polarity(struct int3472_discrete_device *int3
*con_id = "avdd";
*gpio_flags = GPIO_ACTIVE_HIGH;
break;
+ case INT3472_GPIO_TYPE_DOVDD:
+ *con_id = "vio";
+ *gpio_flags = GPIO_ACTIVE_HIGH;
+ break;
case INT3472_GPIO_TYPE_HANDSHAKE:
*con_id = "dvdd";
*gpio_flags = GPIO_ACTIVE_HIGH;
@@ -251,6 +262,7 @@ static void int3472_get_con_id_and_polarity(struct int3472_discrete_device *int3
* 0x0b Power enable
* 0x0c Clock enable
* 0x0d Privacy LED
+ * 0x10 DOVDD (digital I/O voltage)
* 0x13 Hotplug detect
*
* There are some known platform specific quirks where that does not quite
@@ -332,6 +344,7 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
case INT3472_GPIO_TYPE_CLK_ENABLE:
case INT3472_GPIO_TYPE_PRIVACY_LED:
case INT3472_GPIO_TYPE_POWER_ENABLE:
+ case INT3472_GPIO_TYPE_DOVDD:
case INT3472_GPIO_TYPE_HANDSHAKE:
gpio = skl_int3472_gpiod_get_from_temp_lookup(int3472, agpio, con_id, gpio_flags);
if (IS_ERR(gpio)) {
@@ -356,6 +369,7 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
case INT3472_GPIO_TYPE_POWER_ENABLE:
second_sensor = int3472->quirks.avdd_second_sensor;
fallthrough;
+ case INT3472_GPIO_TYPE_DOVDD:
case INT3472_GPIO_TYPE_HANDSHAKE:
ret = skl_int3472_register_regulator(int3472, gpio, enable_time_us,
con_id, second_sensor);
diff --git a/include/linux/platform_data/x86/int3472.h b/include/linux/platform_data/x86/int3472.h
index b1b837583..d72c621f7 100644
--- a/include/linux/platform_data/x86/int3472.h
+++ b/include/linux/platform_data/x86/int3472.h
@@ -26,6 +26,7 @@
#define INT3472_GPIO_TYPE_POWER_ENABLE 0x0b
#define INT3472_GPIO_TYPE_CLK_ENABLE 0x0c
#define INT3472_GPIO_TYPE_PRIVACY_LED 0x0d
+#define INT3472_GPIO_TYPE_DOVDD 0x10
#define INT3472_GPIO_TYPE_HANDSHAKE 0x12
#define INT3472_GPIO_TYPE_HOTPLUG_DETECT 0x13
--
2.53.0
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH 2/2] platform/x86: int3472: Handle GPIO type 0x10 (DOVDD) for OV5675
2026-02-10 8:18 [PATCH 2/2] platform/x86: int3472: Handle GPIO type 0x10 (DOVDD) for OV5675 Leif Skunberg
@ 2026-02-10 9:53 ` johannes.goede
0 siblings, 0 replies; 3+ messages in thread
From: johannes.goede @ 2026-02-10 9:53 UTC (permalink / raw)
To: Leif Skunberg, hdegoede; +Cc: platform-driver-x86, linux-kernel
Hi,
Thank you for your patch,
On 10-Feb-26 09:18, Leif Skunberg wrote:
> The Lenovo ThinkPad X1 Fold 16 Gen 1 has an OV5675 sensor (ACPI HID
> OVTI5675) behind an INT3472 discrete PMIC controller. The INT3472
> _DSM returns GPIO type 0x10 for one of the pins, which controls the
> DOVDD (digital I/O power) regulator enable.
>
> Type 0x10 is not currently handled by the driver, causing the GPIO to
> be ignored with a warning. Add INT3472_GPIO_TYPE_DOVDD (0x10) and
> handle it by:
>
> 1. Adding an entry to int3472_gpio_map[] that maps the DOVDD type to
> INT3472_GPIO_TYPE_POWER_ENABLE for the OVTI5675 HID. The con_id
> is set to "vio" because "dovdd" exceeds GPIO_SUPPLY_NAME_LENGTH.
Note that drivers/media/i2c/ov5675.c: ov5675_supply_names[]: actually
uses "dovdd" as do many other drivers. Please use "dovdd" and make
the GPIO_SUPPLY_NAME_LENGTH define bigger to cover that.
Also please do not add a int3472_gpio_map[] entry, entries there
are for exceptions. Since you are adding support for a new GPIO type
you only have to handle it in what you call the fallback case
(which is the normal non-quirked default case) and then this will
become the default behavior for GPIO type 10 .
> 2. Adding a fallback case in int3472_get_con_id_and_polarity() so
> devices without a gpio_map match still get a valid con_id.
>
> 3. Adding INT3472_GPIO_TYPE_DOVDD to both switch statements in
> skl_int3472_handle_gpio_resources() so the GPIO is acquired via
> temp lookup and registered as a regulator.
>
> Signed-off-by: Leif Skunberg <diamondback@cohunt.app>
Regards,
Hans
> ---
> drivers/platform/x86/intel/int3472/discrete.c | 14 ++++++++++++++
> include/linux/platform_data/x86/int3472.h | 1 +
> 2 files changed, 15 insertions(+)
>
> diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c
> index 1505fc3ef..0a293e73c 100644
> --- a/drivers/platform/x86/intel/int3472/discrete.c
> +++ b/drivers/platform/x86/intel/int3472/discrete.c
> @@ -164,6 +164,13 @@ static const struct int3472_gpio_map int3472_gpio_map[] = {
> .con_id = "dvdd",
> .enable_time_us = 45 * USEC_PER_MSEC,
> },
> + { /* ov5675: DOVDD is a power regulator enable */
> + .hid = "OVTI5675",
> + .type_from = INT3472_GPIO_TYPE_DOVDD,
> + .type_to = INT3472_GPIO_TYPE_POWER_ENABLE,
> + .con_id = "vio",
> + .enable_time_us = GPIO_REGULATOR_ENABLE_TIME,
> + },
> };
>
> static void int3472_get_con_id_and_polarity(struct int3472_discrete_device *int3472, u8 *type,
> @@ -223,6 +230,10 @@ static void int3472_get_con_id_and_polarity(struct int3472_discrete_device *int3
> *con_id = "avdd";
> *gpio_flags = GPIO_ACTIVE_HIGH;
> break;
> + case INT3472_GPIO_TYPE_DOVDD:
> + *con_id = "vio";
> + *gpio_flags = GPIO_ACTIVE_HIGH;
> + break;
> case INT3472_GPIO_TYPE_HANDSHAKE:
> *con_id = "dvdd";
> *gpio_flags = GPIO_ACTIVE_HIGH;
> @@ -251,6 +262,7 @@ static void int3472_get_con_id_and_polarity(struct int3472_discrete_device *int3
> * 0x0b Power enable
> * 0x0c Clock enable
> * 0x0d Privacy LED
> + * 0x10 DOVDD (digital I/O voltage)
> * 0x13 Hotplug detect
> *
> * There are some known platform specific quirks where that does not quite
> @@ -332,6 +344,7 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
> case INT3472_GPIO_TYPE_CLK_ENABLE:
> case INT3472_GPIO_TYPE_PRIVACY_LED:
> case INT3472_GPIO_TYPE_POWER_ENABLE:
> + case INT3472_GPIO_TYPE_DOVDD:
> case INT3472_GPIO_TYPE_HANDSHAKE:
> gpio = skl_int3472_gpiod_get_from_temp_lookup(int3472, agpio, con_id, gpio_flags);
> if (IS_ERR(gpio)) {
> @@ -356,6 +369,7 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
> case INT3472_GPIO_TYPE_POWER_ENABLE:
> second_sensor = int3472->quirks.avdd_second_sensor;
> fallthrough;
> + case INT3472_GPIO_TYPE_DOVDD:
> case INT3472_GPIO_TYPE_HANDSHAKE:
> ret = skl_int3472_register_regulator(int3472, gpio, enable_time_us,
> con_id, second_sensor);
> diff --git a/include/linux/platform_data/x86/int3472.h b/include/linux/platform_data/x86/int3472.h
> index b1b837583..d72c621f7 100644
> --- a/include/linux/platform_data/x86/int3472.h
> +++ b/include/linux/platform_data/x86/int3472.h
> @@ -26,6 +26,7 @@
> #define INT3472_GPIO_TYPE_POWER_ENABLE 0x0b
> #define INT3472_GPIO_TYPE_CLK_ENABLE 0x0c
> #define INT3472_GPIO_TYPE_PRIVACY_LED 0x0d
> +#define INT3472_GPIO_TYPE_DOVDD 0x10
> #define INT3472_GPIO_TYPE_HANDSHAKE 0x12
> #define INT3472_GPIO_TYPE_HOTPLUG_DETECT 0x13
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 2/2] platform/x86: int3472: Handle GPIO type 0x10 (DOVDD) for OV5675
@ 2026-02-10 8:56 Leif Skunberg
0 siblings, 0 replies; 3+ messages in thread
From: Leif Skunberg @ 2026-02-10 8:56 UTC (permalink / raw)
To: dan.scally, sakari.ailus
Cc: hansg, ilpo.jarvinen, platform-driver-x86, linux-kernel, Leif Skunberg
The Lenovo ThinkPad X1 Fold 16 Gen 1 has an OV5675 sensor (ACPI HID
OVTI5675) behind an INT3472 discrete PMIC controller. The INT3472
_DSM returns GPIO type 0x10 for one of the pins, which controls the
DOVDD (digital I/O power) regulator enable.
Type 0x10 is not currently handled by the driver, causing the GPIO to
be ignored with a warning. Add INT3472_GPIO_TYPE_DOVDD (0x10) and
handle it by:
1. Adding an entry to int3472_gpio_map[] that maps the DOVDD type to
INT3472_GPIO_TYPE_POWER_ENABLE for the OVTI5675 HID. The con_id
is set to "vio" because "dovdd" exceeds GPIO_SUPPLY_NAME_LENGTH.
2. Adding a fallback case in int3472_get_con_id_and_polarity() so
devices without a gpio_map match still get a valid con_id.
3. Adding INT3472_GPIO_TYPE_DOVDD to both switch statements in
skl_int3472_handle_gpio_resources() so the GPIO is acquired via
temp lookup and registered as a regulator.
Signed-off-by: Leif Skunberg <diamondback@cohunt.app>
---
drivers/platform/x86/intel/int3472/discrete.c | 14 ++++++++++++++
include/linux/platform_data/x86/int3472.h | 1 +
2 files changed, 15 insertions(+)
diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c
index 1505fc3ef..0a293e73c 100644
--- a/drivers/platform/x86/intel/int3472/discrete.c
+++ b/drivers/platform/x86/intel/int3472/discrete.c
@@ -164,6 +164,13 @@ static const struct int3472_gpio_map int3472_gpio_map[] = {
.con_id = "dvdd",
.enable_time_us = 45 * USEC_PER_MSEC,
},
+ { /* ov5675: DOVDD is a power regulator enable */
+ .hid = "OVTI5675",
+ .type_from = INT3472_GPIO_TYPE_DOVDD,
+ .type_to = INT3472_GPIO_TYPE_POWER_ENABLE,
+ .con_id = "vio",
+ .enable_time_us = GPIO_REGULATOR_ENABLE_TIME,
+ },
};
static void int3472_get_con_id_and_polarity(struct int3472_discrete_device *int3472, u8 *type,
@@ -223,6 +230,10 @@ static void int3472_get_con_id_and_polarity(struct int3472_discrete_device *int3
*con_id = "avdd";
*gpio_flags = GPIO_ACTIVE_HIGH;
break;
+ case INT3472_GPIO_TYPE_DOVDD:
+ *con_id = "vio";
+ *gpio_flags = GPIO_ACTIVE_HIGH;
+ break;
case INT3472_GPIO_TYPE_HANDSHAKE:
*con_id = "dvdd";
*gpio_flags = GPIO_ACTIVE_HIGH;
@@ -251,6 +262,7 @@ static void int3472_get_con_id_and_polarity(struct int3472_discrete_device *int3
* 0x0b Power enable
* 0x0c Clock enable
* 0x0d Privacy LED
+ * 0x10 DOVDD (digital I/O voltage)
* 0x13 Hotplug detect
*
* There are some known platform specific quirks where that does not quite
@@ -332,6 +344,7 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
case INT3472_GPIO_TYPE_CLK_ENABLE:
case INT3472_GPIO_TYPE_PRIVACY_LED:
case INT3472_GPIO_TYPE_POWER_ENABLE:
+ case INT3472_GPIO_TYPE_DOVDD:
case INT3472_GPIO_TYPE_HANDSHAKE:
gpio = skl_int3472_gpiod_get_from_temp_lookup(int3472, agpio, con_id, gpio_flags);
if (IS_ERR(gpio)) {
@@ -356,6 +369,7 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
case INT3472_GPIO_TYPE_POWER_ENABLE:
second_sensor = int3472->quirks.avdd_second_sensor;
fallthrough;
+ case INT3472_GPIO_TYPE_DOVDD:
case INT3472_GPIO_TYPE_HANDSHAKE:
ret = skl_int3472_register_regulator(int3472, gpio, enable_time_us,
con_id, second_sensor);
diff --git a/include/linux/platform_data/x86/int3472.h b/include/linux/platform_data/x86/int3472.h
index b1b837583..d72c621f7 100644
--- a/include/linux/platform_data/x86/int3472.h
+++ b/include/linux/platform_data/x86/int3472.h
@@ -26,6 +26,7 @@
#define INT3472_GPIO_TYPE_POWER_ENABLE 0x0b
#define INT3472_GPIO_TYPE_CLK_ENABLE 0x0c
#define INT3472_GPIO_TYPE_PRIVACY_LED 0x0d
+#define INT3472_GPIO_TYPE_DOVDD 0x10
#define INT3472_GPIO_TYPE_HANDSHAKE 0x12
#define INT3472_GPIO_TYPE_HOTPLUG_DETECT 0x13
--
2.53.0
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2026-02-10 9:53 UTC | newest]
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2026-02-10 8:18 [PATCH 2/2] platform/x86: int3472: Handle GPIO type 0x10 (DOVDD) for OV5675 Leif Skunberg
2026-02-10 9:53 ` johannes.goede
2026-02-10 8:56 Leif Skunberg
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