10.06.2020 09:02, Sowjanya Komatineni пишет:
> This patch adds an API of_tegra_mipi_request() to allow creating
> mipi device for specific device node rather than a device so Tegra
> CSI driver can use it for calibrating MIPI pads for each stream
> independently.
>
> Signed-off-by: Sowjanya Komatineni <skomatineni@xxxxxxxxxx>
> ---
> drivers/gpu/host1x/mipi.c | 10 ++++++++--
> include/linux/host1x.h | 2 ++
> 2 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/host1x/mipi.c b/drivers/gpu/host1x/mipi.c
> index e00809d..f51fe69 100644
> --- a/drivers/gpu/host1x/mipi.c
> +++ b/drivers/gpu/host1x/mipi.c
> @@ -206,9 +206,9 @@ static int tegra_mipi_power_down(struct tegra_mipi *mipi)
> return 0;
> }
>
> -struct tegra_mipi_device *tegra_mipi_request(struct device *device)
> +struct tegra_mipi_device *of_tegra_mipi_request(struct device *device,
> + struct device_node *np)
> {
> - struct device_node *np = device->of_node;
> struct tegra_mipi_device *dev;
> struct of_phandle_args args;
> int err;
> @@ -252,6 +252,12 @@ struct tegra_mipi_device *tegra_mipi_request(struct device *device)
> of_node_put(args.np);
> return ERR_PTR(err);
> }
> +EXPORT_SYMBOL(of_tegra_mipi_request);
> +
> +struct tegra_mipi_device *tegra_mipi_request(struct device *device)
> +{
> + return of_tegra_mipi_request(device, device->of_node);
> +}
> EXPORT_SYMBOL(tegra_mipi_request);
>
> void tegra_mipi_free(struct tegra_mipi_device *device)
> diff --git a/include/linux/host1x.h b/include/linux/host1x.h
> index c230b4e..a61ca52 100644
> --- a/include/linux/host1x.h
> +++ b/include/linux/host1x.h
> @@ -325,6 +325,8 @@ int host1x_client_resume(struct host1x_client *client);
>
> struct tegra_mipi_device;
>
> +struct tegra_mipi_device *of_tegra_mipi_request(struct device *device,
> + struct device_node *np);
Looks like adding a new function here is a bit of overkill. What about
to change tegra_mipi_request() to take the node argument?
