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SubjectRe: [PATCH 1/3] drm/simpledrm: Bind to OF framebuffers in /chosen
From
Hi

Am 17.11.21 um 15:58 schrieb Hector Martin:
> This matches the simplefb behavior; these nodes are not matched by the
> standard OF machinery. This fixes a regression when simpledrm replaces
> simeplefb.
>
> Signed-off-by: Hector Martin <marcan@marcan.st>
> ---
> drivers/gpu/drm/tiny/simpledrm.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/drivers/gpu/drm/tiny/simpledrm.c b/drivers/gpu/drm/tiny/simpledrm.c
> index 481b48bde047..2c84f2ea1fa2 100644
> --- a/drivers/gpu/drm/tiny/simpledrm.c
> +++ b/drivers/gpu/drm/tiny/simpledrm.c
> @@ -2,6 +2,7 @@
>
> #include <linux/clk.h>
> #include <linux/of_clk.h>
> +#include <linux/of_platform.h>
> #include <linux/platform_data/simplefb.h>
> #include <linux/platform_device.h>
> #include <linux/regulator/consumer.h>
> @@ -897,5 +898,21 @@ static struct platform_driver simpledrm_platform_driver = {
>
> module_platform_driver(simpledrm_platform_driver);
>
> +static int __init simpledrm_init(void)
> +{
> + struct device_node *np;
> +
> + if (IS_ENABLED(CONFIG_OF_ADDRESS) && of_chosen) {
> + for_each_child_of_node(of_chosen, np) {
> + if (of_device_is_compatible(np, "simple-framebuffer"))
> + of_platform_device_create(np, NULL, NULL);
> + }
> + }
> +
> + return 0;
> +}
> +
> +fs_initcall(simpledrm_init);
> +

Simpledrm is just a driver, but this is platform setup code. Why is this
code located here and not under arch/ or drivers/firmware/?

I know that other drivers do similar things, it doesn't seem to belong here.

Best regards
Thomas

> MODULE_DESCRIPTION(DRIVER_DESC);
> MODULE_LICENSE("GPL v2");
>

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev
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