2018-09-08 15:46 GMT+02:00 Noralf Trønnes <noralf@xxxxxxxxxxx>:
> The CMA helper is already using the drm_fb_helper_generic_probe part of
> the generic fbdev emulation. This patch makes full use of the generic
> fbdev emulation by using its drm_client callbacks. This means that
> drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are
> now handled by the emulation code. Additionally fbdev unregister happens
> automatically on drm_dev_unregister().
>
> If drm_fbdev_generic_setup() fails, an error is printed by the function.
>
> drm_fbdev_generic_setup() handles mode_config.num_connector being zero.
> In that case it retries fbdev setup on the next .output_poll_changed.
>
> Cc: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx>
> Cc: Vincent Abriou <vincent.abriou@xxxxxx>
> Signed-off-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
Acked-by: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx>
> ---
> drivers/gpu/drm/sti/sti_drv.c | 8 +-------
> 1 file changed, 1 insertion(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
> index 832fc43960ee..6dced8abcf16 100644
> --- a/drivers/gpu/drm/sti/sti_drv.c
> +++ b/drivers/gpu/drm/sti/sti_drv.c
> @@ -121,7 +121,6 @@ static int sti_drm_dbg_init(struct drm_minor *minor)
>
> static const struct drm_mode_config_funcs sti_mode_config_funcs = {
> .fb_create = drm_gem_fb_create,
> - .output_poll_changed = drm_fb_helper_output_poll_changed,
> .atomic_check = drm_atomic_helper_check,
> .atomic_commit = drm_atomic_helper_commit,
> };
> @@ -206,7 +205,6 @@ static void sti_cleanup(struct drm_device *ddev)
> {
> struct sti_private *private = ddev->dev_private;
>
> - drm_fb_cma_fbdev_fini(ddev);
> drm_kms_helper_poll_fini(ddev);
> component_unbind_all(ddev->dev, ddev);
> kfree(private);
> @@ -236,11 +234,7 @@ static int sti_bind(struct device *dev)
>
> drm_mode_config_reset(ddev);
>
> - if (ddev->mode_config.num_connector) {
> - ret = drm_fb_cma_fbdev_init(ddev, 32, 0);
> - if (ret)
> - DRM_DEBUG_DRIVER("Warning: fails to create fbdev\n");
> - }
> + drm_fbdev_generic_setup(ddev, 32);
>
> return 0;
>
> --
> 2.15.1
>
--
Benjamin Gaignard
Graphic Study Group
Linaro.org │ Open source software for ARM SoCs
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