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From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
To: "Ville Syrjälä" <ville.syrjala@linux.intel.com>,
	"Daniel Vetter" <daniel@ffwll.ch>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH v2 16/17] drm/i915: Use crtc->hwmode for vblanks.
Date: Tue, 19 May 2015 08:10:46 +0200	[thread overview]
Message-ID: <555AD3E6.8080506@linux.intel.com> (raw)
In-Reply-To: <20150518162823.GD18908@intel.com>

Op 18-05-15 om 18:28 schreef Ville Syrjälä:
> On Mon, May 18, 2015 at 05:49:23PM +0200, Daniel Vetter wrote:
>> On Wed, May 13, 2015 at 10:23:46PM +0200, Maarten Lankhorst wrote:
>>> intel_crtc->config will be removed eventually, so use crtc->hwmode.
>>> drm_atomic_helper_update_legacy_modeset_state updates hwmode,
>>> but crtc->active will eventually be gone too. Set dotclock to zero
>>> to indicate the crtc is inactive.
>>>
>>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
>> I think adding a code comment to our assignment of crtc->hw_mode that we
>> need this for i915_get_vblank_timestamp (and only for that) would be
>> really good. Especially since I can't find it with a quick grep, at least
>> in current upstream ;-)
> I don't particularly like resurrecting this zombie. Why we can't just use
> crtc->state->adjusted_mode (or wherever the current adjusted mode is kept)?
>
Because we want to get rid of intel_crtc->config, and if drm_atomic_swap_state
is moved to be done before any call to then crtc->state->adjusted_mode will not
be in sync with the hw state, and any wai tfor vblank will produce funny results.

Since I don't think you should want to pass a state to vblank you would have to use
some crtc local variable somewhere, in this case I chose to use hwmode for that.

~Maarten
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  reply	other threads:[~2015-05-19  6:10 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-13 20:23 [PATCH v2 00/17] drm/i915: Convert to atomic, part 2 Maarten Lankhorst
2015-05-13 20:23 ` [PATCH v2 01/17] drm/atomic: update crtc->hwmode in legacy state Maarten Lankhorst
2015-05-18  8:01   ` Maarten Lankhorst
2015-05-13 20:23 ` [PATCH v2 02/17] drm/atomic: Allow drivers to subclass drm_atomic_state, v2 Maarten Lankhorst
2015-05-18  8:06   ` [PATCH v2 02/17] drm/atomic: Allow drivers to subclass drm_atomic_state, v3 Maarten Lankhorst
2015-05-18 14:40     ` Daniel Vetter
2015-05-13 20:23 ` [PATCH v2 03/17] drm/i915: get rid of put_shared_dpll Maarten Lankhorst
2015-05-13 20:23 ` [PATCH v2 04/17] drm/i915: get rid of intel_crtc_disable and related code, v2 Maarten Lankhorst
2015-05-13 20:23 ` [PATCH v2 05/17] drm/i915: use intel_crtc_control everywhere Maarten Lankhorst
2015-05-13 20:23 ` [PATCH v2 06/17] drm/i915: Use drm_atomic_helper_update_legacy_modeset_state Maarten Lankhorst
2015-05-13 20:23 ` [PATCH v2 07/17] drm/i915: Use crtc_state->active instead of crtc_state->enable Maarten Lankhorst
2015-05-18 15:30   ` Daniel Vetter
2015-05-18 16:35     ` Maarten Lankhorst
2015-05-19  8:09       ` Daniel Vetter
2015-05-13 20:23 ` [PATCH v2 08/17] drm/i915: Set mode_changed for audio in intel_modeset_pipe_config() Maarten Lankhorst
2015-05-18 15:36   ` Daniel Vetter
2015-05-18 16:37     ` Maarten Lankhorst
2015-05-13 20:23 ` [PATCH v2 09/17] drm/i915: Make __intel_set_mode() take only atomic state as argument Maarten Lankhorst
2015-05-15  7:42   ` Ander Conselvan De Oliveira
2015-05-13 20:23 ` [PATCH v2 10/17] drm/i915: Support modeset across multiple pipes Maarten Lankhorst
2015-05-13 20:23 ` [PATCH v2 11/17] drm/i915: Use global atomic state for staged pll config Maarten Lankhorst
2015-05-18 15:45   ` Daniel Vetter
2015-05-18 16:27     ` Maarten Lankhorst
2015-05-19  8:13       ` Daniel Vetter
2015-05-13 20:23 ` [PATCH v2 12/17] drm/i915: Read hw state into an atomic state struct Maarten Lankhorst
2015-05-13 20:23 ` [PATCH v2 13/17] drm/i915: Move cdclk and pll setup to intel_modeset_compute_config() Maarten Lankhorst
2015-05-13 20:23 ` [PATCH v2 14/17] drm/i915: Implement intel_crtc_toggle using atomic state, v3 Maarten Lankhorst
2015-05-13 20:23 ` [PATCH v2 15/17] drm/i915: Calculate haswell plane workaround, v2 Maarten Lankhorst
2015-05-18 15:47   ` Daniel Vetter
2015-05-18 15:51     ` Daniel Stone
2015-05-13 20:23 ` [PATCH v2 16/17] drm/i915: Use crtc->hwmode for vblanks Maarten Lankhorst
2015-05-18 15:49   ` Daniel Vetter
2015-05-18 16:28     ` Ville Syrjälä
2015-05-19  6:10       ` Maarten Lankhorst [this message]
2015-05-19  8:16         ` Daniel Vetter
2015-05-13 20:23 ` [PATCH v2 17/17] drm/i915: Remove use of crtc->config from i915_debugfs.c Maarten Lankhorst
2015-05-18 15:51   ` Daniel Vetter

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