Re: [PATCH v5 08/10] drm/arm: malidp: Use crtc->mode_valid() callback

From: Neil Armstrong
Date: Tue May 30 2017 - 03:30:01 EST


On 05/25/2017 04:19 PM, Jose Abreu wrote:
> Now that we have a callback to check if crtc supports a given mode
> we can use it in malidp so that we restrict the number of probbed
> modes to the ones we can actually display.
>
> Also, remove the mode_fixup() callback as this is no longer needed
> because mode_valid() will be called before.
>
> NOTE: Not even compiled tested
>
> Signed-off-by: Jose Abreu <joabreu@xxxxxxxxxxxx>
> Cc: Carlos Palminha <palminha@xxxxxxxxxxxx>
> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Cc: Liviu Dudau <liviu.dudau@xxxxxxx>
> Cc: Brian Starkey <brian.starkey@xxxxxxx>
> Cc: David Airlie <airlied@xxxxxxxx>
> ---
> drivers/gpu/drm/arm/malidp_crtc.c | 11 +++++------
> 1 file changed, 5 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/arm/malidp_crtc.c b/drivers/gpu/drm/arm/malidp_crtc.c
> index 9446a67..4bb38a2 100644
> --- a/drivers/gpu/drm/arm/malidp_crtc.c
> +++ b/drivers/gpu/drm/arm/malidp_crtc.c
> @@ -22,9 +22,8 @@
> #include "malidp_drv.h"
> #include "malidp_hw.h"
>
> -static bool malidp_crtc_mode_fixup(struct drm_crtc *crtc,
> - const struct drm_display_mode *mode,
> - struct drm_display_mode *adjusted_mode)
> +static enum drm_mode_status malidp_crtc_mode_valid(struct drm_crtc *crtc,
> + const struct drm_display_mode *mode)
> {
> struct malidp_drm *malidp = crtc_to_malidp_device(crtc);
> struct malidp_hw_device *hwdev = malidp->dev;
> @@ -40,11 +39,11 @@ static bool malidp_crtc_mode_fixup(struct drm_crtc *crtc,
> if (rate != req_rate) {
> DRM_DEBUG_DRIVER("pxlclk doesn't support %ld Hz\n",
> req_rate);
> - return false;
> + return MODE_NOCLOCK;
> }
> }
>
> - return true;
> + return MODE_OK;
> }
>
> static void malidp_crtc_enable(struct drm_crtc *crtc)
> @@ -408,7 +407,7 @@ static int malidp_crtc_atomic_check(struct drm_crtc *crtc,
> }
>
> static const struct drm_crtc_helper_funcs malidp_crtc_helper_funcs = {
> - .mode_fixup = malidp_crtc_mode_fixup,
> + .mode_valid = malidp_crtc_mode_valid,
> .enable = malidp_crtc_enable,
> .disable = malidp_crtc_disable,
> .atomic_check = malidp_crtc_atomic_check,
>

Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>