linux-kernel - Re: [PATCH 2/4] DRM: BRIDGE: TFP410: Support basic I2C interface

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Date:   Thu, 26 Jan 2023 16:41:47 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Jonathan Cormier <jcormier@...ticallink.com>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <robert.foss@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Jyri Sarha <jsarha@...com>
Cc:     dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Michael Williamson <michael.williamson@...ticallink.com>,
        Bob Duke <bduke@...ticallink.com>
Subject: Re: [PATCH 2/4] DRM: BRIDGE: TFP410: Support basic I2C interface

On 25/01/2023 22:09, Jonathan Cormier wrote:
> From: Michael Williamson <michael.williamson@...ticallink.com>
> 
> The TFP410 driver does not support I2C.  As such, the device remains in
> Power Down if the I2C is enabled by the bootstrap pins.
> 
> Add basic support for the I2C interface, and provide support to take
> the device out of power down when enabled.  Also read the bootstrap mode
> pins via the CTL_1_MODE register when using the I2C bus.
> 
> Signed-off-by: Michael Williamson <michael.williamson@...ticallink.com>
> Signed-off-by: Jonathan Cormier <jcormier@...ticallink.com>
> ---
>  drivers/gpu/drm/bridge/ti-tfp410.c | 95 +++++++++++++++++++++++++++-----------
>  1 file changed, 68 insertions(+), 27 deletions(-)

Use subject prefixes matching the subsystem (which you can get for
example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
your patch is touching).

hint: it is entirely different.

> 
> diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
> index b9635abbad16..323a6d9ed188 100644
> --- a/drivers/gpu/drm/bridge/ti-tfp410.c
> +++ b/drivers/gpu/drm/bridge/ti-tfp410.c
> @@ -6,6 +6,7 @@
>  
>  #include <linux/gpio/consumer.h>
>  #include <linux/i2c.h>
> +#include <linux/regmap.h>
>  #include <linux/media-bus-format.h>
>  #include <linux/module.h>
>  #include <linux/of_graph.h>
> @@ -21,6 +22,20 @@

(...)

>  
>  static void tfp410_i2c_remove(struct i2c_client *client)
> @@ -408,7 +449,7 @@ MODULE_DEVICE_TABLE(i2c, tfp410_i2c_ids);
>  static struct i2c_driver tfp410_i2c_driver = {
>  	.driver = {
>  		.name	= "tfp410",
> -		.of_match_table = of_match_ptr(tfp410_match),
> +		.of_match_table = tfp410_match,

This does not look related to the patch.

Best regards,
Krzysztof