From 8bf42225dac865665a5a0f8bbe1b62139470ffa0 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 27 Jan 2012 22:40:51 +0100 Subject: drm/modes: do not enforce an odd vtotal for interlaced modes CEA actually specifies an interlaced mode with even vtotal and supplies a diagram showing how this is supposed to work. Note that interlaced modes with an even vtotal seem to be a fairly recent invention. All modelines lore I could dig up with googling says that vtotal for interlaced modes _needs_ to be odd. But the even modelines in CEA are not a spec-bug, there's a figure in CEA-861-E called "Figure 5 Special Interlaced Video Format Timing (Even Vtotal)" that explains how it's supposed to work. Furthermore intel Bspec explicitly mentions that both odd and even interlaced vtotal are supported (VTOTAL register in the south display engine of PCH split chips). Acked-by: Adam Jackson Signed-Off-by: Daniel Vetter Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_modes.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/gpu/drm/drm_modes.c') diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index fb8e46b4e8bc..7ff13bc47ca2 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -686,8 +686,6 @@ void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags) p->crtc_vsync_end /= 2; p->crtc_vtotal /= 2; } - - p->crtc_vtotal |= 1; } if (p->flags & DRM_MODE_FLAG_DBLSCAN) { -- cgit v1.2.3 From c3c50e8b651887bcefcc13beb3739c00b2379b5c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Tue, 13 Mar 2012 12:35:51 +0200 Subject: drm: Add drm_mode_copy() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a helper function to copy a display mode. Use it in drm_mode_duplicate() and nouveau mode_fixup hooks. Signed-off-by: Ville Syrjälä Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_modes.c | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) (limited to 'drivers/gpu/drm/drm_modes.c') diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 7ff13bc47ca2..b7adb4a967fd 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -713,6 +713,27 @@ void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags) EXPORT_SYMBOL(drm_mode_set_crtcinfo); +/** + * drm_mode_copy - copy the mode + * @dst: mode to overwrite + * @src: mode to copy + * + * LOCKING: + * None. + * + * Copy an existing mode into another mode, preserving the object id + * of the destination mode. + */ +void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src) +{ + int id = dst->base.id; + + *dst = *src; + dst->base.id = id; + INIT_LIST_HEAD(&dst->head); +} +EXPORT_SYMBOL(drm_mode_copy); + /** * drm_mode_duplicate - allocate and duplicate an existing mode * @m: mode to duplicate @@ -727,16 +748,13 @@ struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, const struct drm_display_mode *mode) { struct drm_display_mode *nmode; - int new_id; nmode = drm_mode_create(dev); if (!nmode) return NULL; - new_id = nmode->base.id; - *nmode = *mode; - nmode->base.id = new_id; - INIT_LIST_HEAD(&nmode->head); + drm_mode_copy(nmode, mode); + return nmode; } EXPORT_SYMBOL(drm_mode_duplicate); -- cgit v1.2.3