linux-kernel - Re: [PATCH 1/1] ACPI: property: Replicate DT-aligned u32 properties from DisCo for Imaging

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Date:   Wed, 1 Nov 2023 19:00:28 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] ACPI: property: Replicate DT-aligned u32 properties
 from DisCo for Imaging

On Wed, Nov 1, 2023 at 1:32 PM Sakari Ailus
<sakari.ailus@...ux.intel.com> wrote:
>
> MIPI DisCo for Imaging defines properties for camera sensors that
> functionally align with DT equivalents. Replicate the values of these
> properties so no-one else needs to know about these property names.
>
> Properties replicated are:
>
>         "mipi-img-clock-frequency" -> "clock-frequency"
>         "mipi-img-led-max-current" -> "led-max-microamp"
>         "mipi-img-flash-max-current" -> "flash-max-microamp"
>         "mipi-img-flash-max-timeout" -> "flash-max-timeout-us"
>
> Signed-off-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
> ---
> Hi Rafael,
>
> Could you include this patch in the set? Then I think it's fairly
> complete on ACPI framework side.

I'll do it, thanks!

>  drivers/acpi/mipi-di.c  | 21 +++++++++++++++++++++
>  include/acpi/acpi_bus.h |  4 ++++
>  2 files changed, 25 insertions(+)
>
> diff --git a/drivers/acpi/mipi-di.c b/drivers/acpi/mipi-di.c
> index 13ed09216c37..de8988657e96 100644
> --- a/drivers/acpi/mipi-di.c
> +++ b/drivers/acpi/mipi-di.c
> @@ -591,6 +591,7 @@ static void init_crs_csi2_swnodes(struct crs_csi2 *csi2)
>         struct acpi_device *adev;
>         acpi_status status;
>         unsigned int i;
> +       u32 val;
>         int ret;
>
>         /*
> @@ -622,6 +623,26 @@ static void init_crs_csi2_swnodes(struct crs_csi2 *csi2)
>                 }
>         }
>
> +       if (!fwnode_property_read_u32(adev_fwnode, "mipi-img-clock-frequency", &val)) {
> +               swnodes->dev_props[NEXT_PROPERTY(prop_index, DEV_CLOCK_FREQUENCY)] =
> +                       PROPERTY_ENTRY_U32("clock-frequency", val);
> +       }
> +
> +       if (!fwnode_property_read_u32(adev_fwnode, "mipi-img-led-max-current", &val)) {
> +               swnodes->dev_props[NEXT_PROPERTY(prop_index, DEV_LED_MAX_MICROAMP)] =
> +                       PROPERTY_ENTRY_U32("led-max-microamp", val);
> +       }
> +
> +       if (!fwnode_property_read_u32(adev_fwnode, "mipi-img-flash-max-current", &val)) {
> +               swnodes->dev_props[NEXT_PROPERTY(prop_index, DEV_FLASH_MAX_MICROAMP)] =
> +                       PROPERTY_ENTRY_U32("flash-max-microamp", val);
> +       }
> +
> +       if (!fwnode_property_read_u32(adev_fwnode, "mipi-img-flash-max-timeout-us", &val)) {
> +               swnodes->dev_props[NEXT_PROPERTY(prop_index, DEV_FLASH_MAX_TIMEOUT_US)] =
> +                       PROPERTY_ENTRY_U32("flash-max-timeout-us", val);
> +       }
> +
>         status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
>         if (ACPI_FAILURE(status)) {
>                 acpi_handle_info(handle, "Unable to get the path name\n");
> diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
> index d92799889512..85a27081cced 100644
> --- a/include/acpi/acpi_bus.h
> +++ b/include/acpi/acpi_bus.h
> @@ -371,6 +371,10 @@ struct acpi_gpio_mapping;
>
>  enum acpi_device_swnode_dev_props {
>         ACPI_DEVICE_SWNODE_DEV_ROTATION,
> +       ACPI_DEVICE_SWNODE_DEV_CLOCK_FREQUENCY,
> +       ACPI_DEVICE_SWNODE_DEV_LED_MAX_MICROAMP,
> +       ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_MICROAMP,
> +       ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_TIMEOUT_US,
>         ACPI_DEVICE_SWNODE_DEV_NUM_OF,
>         ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES
>  };
> --
> 2.39.2
>
>