[2/2] platform/x86: int3472: discrete: Log a warning if the pin-numbers don't match
Commit Message
The INT3472 discrete code assumes that the ACPI GPIO resources are
in the same order as the pin-info _DSM entries.
The returned pin-info includes the pin-number in bits 15-8. Add a check
that this matches with the ACPI GPIO resource pin-number in case
the assumption is not true with some ACPI tables.
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
drivers/platform/x86/intel/int3472/discrete.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
Comments
On Tue, 13 Jun 2023, Hans de Goede wrote:
> The INT3472 discrete code assumes that the ACPI GPIO resources are
> in the same order as the pin-info _DSM entries.
>
> The returned pin-info includes the pin-number in bits 15-8. Add a check
> that this matches with the ACPI GPIO resource pin-number in case
> the assumption is not true with some ACPI tables.
>
> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
> ---
> drivers/platform/x86/intel/int3472/discrete.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c
> index a31964076883..850f306214c7 100644
> --- a/drivers/platform/x86/intel/int3472/discrete.c
> +++ b/drivers/platform/x86/intel/int3472/discrete.c
> @@ -154,8 +154,8 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
> {
> struct int3472_discrete_device *int3472 = data;
> struct acpi_resource_gpio *agpio;
> + u8 active_value, pin, type;
> union acpi_object *obj;
> - u8 active_value, type;
> const char *err_msg;
> const char *func;
> u32 polarity;
> @@ -183,6 +183,12 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
>
> int3472_get_func_and_polarity(type, &func, &polarity);
>
> + pin = FIELD_GET(INT3472_GPIO_DSM_PIN, obj->integer.value);
> + if (pin != agpio->pin_table[0])
> + dev_warn(int3472->dev, "%s %s pin number mismatch _DSM %d resource %d\n",
> + func, agpio->resource_source.string_ptr, pin,
> + agpio->pin_table[0]);
> +
> active_value = FIELD_GET(INT3472_GPIO_DSM_SENSOR_ON_VAL, obj->integer.value);
> if (!active_value)
> polarity ^= GPIO_ACTIVE_LOW;
For both 1 and 2,
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
--
i.
Hi,
On 6/13/23 13:17, Ilpo Järvinen wrote:
> On Tue, 13 Jun 2023, Hans de Goede wrote:
>
>> The INT3472 discrete code assumes that the ACPI GPIO resources are
>> in the same order as the pin-info _DSM entries.
>>
>> The returned pin-info includes the pin-number in bits 15-8. Add a check
>> that this matches with the ACPI GPIO resource pin-number in case
>> the assumption is not true with some ACPI tables.
>>
>> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
>> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
>> ---
>> drivers/platform/x86/intel/int3472/discrete.c | 8 +++++++-
>> 1 file changed, 7 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c
>> index a31964076883..850f306214c7 100644
>> --- a/drivers/platform/x86/intel/int3472/discrete.c
>> +++ b/drivers/platform/x86/intel/int3472/discrete.c
>> @@ -154,8 +154,8 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
>> {
>> struct int3472_discrete_device *int3472 = data;
>> struct acpi_resource_gpio *agpio;
>> + u8 active_value, pin, type;
>> union acpi_object *obj;
>> - u8 active_value, type;
>> const char *err_msg;
>> const char *func;
>> u32 polarity;
>> @@ -183,6 +183,12 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
>>
>> int3472_get_func_and_polarity(type, &func, &polarity);
>>
>> + pin = FIELD_GET(INT3472_GPIO_DSM_PIN, obj->integer.value);
>> + if (pin != agpio->pin_table[0])
>> + dev_warn(int3472->dev, "%s %s pin number mismatch _DSM %d resource %d\n",
>> + func, agpio->resource_source.string_ptr, pin,
>> + agpio->pin_table[0]);
>> +
>> active_value = FIELD_GET(INT3472_GPIO_DSM_SENSOR_ON_VAL, obj->integer.value);
>> if (!active_value)
>> polarity ^= GPIO_ACTIVE_LOW;
>
> For both 1 and 2,
>
> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Thank you.
I've added this to my review-hans (soon to be for-next) branch now.
Regards,
Hans
@@ -154,8 +154,8 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
{
struct int3472_discrete_device *int3472 = data;
struct acpi_resource_gpio *agpio;
+ u8 active_value, pin, type;
union acpi_object *obj;
- u8 active_value, type;
const char *err_msg;
const char *func;
u32 polarity;
@@ -183,6 +183,12 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
int3472_get_func_and_polarity(type, &func, &polarity);
+ pin = FIELD_GET(INT3472_GPIO_DSM_PIN, obj->integer.value);
+ if (pin != agpio->pin_table[0])
+ dev_warn(int3472->dev, "%s %s pin number mismatch _DSM %d resource %d\n",
+ func, agpio->resource_source.string_ptr, pin,
+ agpio->pin_table[0]);
+
active_value = FIELD_GET(INT3472_GPIO_DSM_SENSOR_ON_VAL, obj->integer.value);
if (!active_value)
polarity ^= GPIO_ACTIVE_LOW;