Re: [PATCH] drm: Clean up the 1366x768 fixup codes

From: Takashi Iwai
Date: Mon Jan 16 2017 - 15:15:30 EST


On Mon, 16 Jan 2017 20:16:04 +0100,
Gustavo Padovan wrote:
>
> Hi Takashi,
>
> 2017-01-16 Takashi Iwai <tiwai@xxxxxxx>:
>
> > This is just a cleanup, no functional change.
> >
> > The fixup code for 1366x768 in drm_mode_create_from_cmdline_mode() is
> > basically a copy of the existing code in drm_edid.c. Make the latter
> > code public so that it can be called from the former function.
> >
> > Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
> > ---
> > drivers/gpu/drm/drm_crtc_internal.h | 3 +++
> > drivers/gpu/drm/drm_edid.c | 6 +++---
> > drivers/gpu/drm/drm_modes.c | 9 ++-------
> > 3 files changed, 8 insertions(+), 10 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
> > index cdf6860c9d22..01bde7103ad6 100644
> > --- a/drivers/gpu/drm/drm_crtc_internal.h
> > +++ b/drivers/gpu/drm/drm_crtc_internal.h
> > @@ -199,3 +199,6 @@ int drm_mode_cursor2_ioctl(struct drm_device *dev,
> > void *data, struct drm_file *file_priv);
> > int drm_mode_page_flip_ioctl(struct drm_device *dev,
> > void *data, struct drm_file *file_priv);
> > +
> > +/* drm_edid.c */
> > +void drm_mode_fixup_1366x768(struct drm_display_mode *mode);
> > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> > index 336be31ff3de..739a19cb27d9 100644
> > --- a/drivers/gpu/drm/drm_edid.c
> > +++ b/drivers/gpu/drm/drm_edid.c
> > @@ -2152,7 +2152,7 @@ drm_dmt_modes_for_range(struct drm_connector *connector, struct edid *edid,
> > /* fix up 1366x768 mode from 1368x768;
> > * GFT/CVT can't express 1366 width which isn't dividable by 8
> > */
> > -static void fixup_mode_1366x768(struct drm_display_mode *mode)
> > +void drm_mode_fixup_1366x768(struct drm_display_mode *mode)
> > {
> > if (mode->hdisplay == 1368 && mode->vdisplay == 768) {
> > mode->hdisplay = 1366;
> > @@ -2176,7 +2176,7 @@ drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid,
> > if (!newmode)
> > return modes;
> >
> > - fixup_mode_1366x768(newmode);
> > + drm_mode_fixup_1366x768(newmode);
> > if (!mode_in_range(newmode, edid, timing) ||
> > !valid_inferred_mode(connector, newmode)) {
> > drm_mode_destroy(dev, newmode);
> > @@ -2205,7 +2205,7 @@ drm_cvt_modes_for_range(struct drm_connector *connector, struct edid *edid,
> > if (!newmode)
> > return modes;
> >
> > - fixup_mode_1366x768(newmode);
> > + drm_mode_fixup_1366x768(newmode);
> > if (!mode_in_range(newmode, edid, timing) ||
> > !valid_inferred_mode(connector, newmode)) {
> > drm_mode_destroy(dev, newmode);
> > diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
> > index e6b19bc9021a..860f4d1ffbde 100644
> > --- a/drivers/gpu/drm/drm_modes.c
> > +++ b/drivers/gpu/drm/drm_modes.c
> > @@ -1461,13 +1461,8 @@ drm_mode_create_from_cmdline_mode(struct drm_device *dev,
> >
> > mode->type |= DRM_MODE_TYPE_USERDEF;
> > /* fix up 1368x768: GFT/CVT can't express 1366 width due to alignment */
> > - if (cmd->xres == 1366 && mode->hdisplay == 1368) {
> > - mode->hdisplay = 1366;
> > - mode->hsync_start--;
> > - mode->hsync_end--;
> > - drm_mode_set_name(mode);
> > - }
> > - drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
>
> At a glance removing the call to drm_mode_set_crtcinfo() seems a
> functional change to me. I'm not sure why you removed it.

Oops, of course it's wrong. It shouldn't have been deleted.
Will resubmit the proper patch.

Thanks for catching!


Takashi