From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: Manasi Navare <manasi.d.navare@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>, intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 3/3] drm/i915/dp: Disable Port sync mode correctly on teardown
Date: Fri, 13 Dec 2019 22:06:37 +0200 [thread overview]
Message-ID: <20191213200637.GE1208@intel.com> (raw)
In-Reply-To: <20191211211425.17821-4-manasi.d.navare@intel.com>
On Wed, Dec 11, 2019 at 01:14:25PM -0800, Manasi Navare wrote:
> While clearing the Ports ync mode enable and master select bits
> we need to make sure that we perform a RMW for disable else
> it sets the other bits casuing unwanted sideeffects.
>
> Bugzilla: https://gitlab.freedesktop.org/drm/intel/issues/5
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: Jani Nikula <jani.nikula@intel.com>
> Fixes: 51528afe7c5e ("drm/i915/display/icl: Disable transcoder port sync as part of crtc_disable() sequence")
> Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_display.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index c0a2dab3fe67..3fccda0f1f36 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -4599,7 +4599,8 @@ static void icl_disable_transcoder_port_sync(const struct intel_crtc_state *old_
> transcoder_name(old_crtc_state->cpu_transcoder));
>
> reg = TRANS_DDI_FUNC_CTL2(old_crtc_state->cpu_transcoder);
> - trans_ddi_func_ctl2_val = ~(PORT_SYNC_MODE_ENABLE |
> + trans_ddi_func_ctl2_val = I915_READ(reg);
> + trans_ddi_func_ctl2_val &= ~(PORT_SYNC_MODE_ENABLE |
> PORT_SYNC_MODE_MASTER_SELECT_MASK);
> I915_WRITE(reg, trans_ddi_func_ctl2_val);
I915_WRITE(TRANS_DDI_FUNC_CTL2, 0);
> }
> --
> 2.19.1
--
Ville Syrjälä
Intel
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next prev parent reply other threads:[~2019-12-13 20:44 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-11 21:14 [Intel-gfx] [PATCH 0/3] i915 fixes to handle hotplug cases on 8K tiled monitor Manasi Navare
2019-12-11 21:14 ` [Intel-gfx] [PATCH 1/3] drm/i915/dp: Make sure all tiled connectors get added to the state with full modeset Manasi Navare
2019-12-13 0:32 ` Matt Roper
2019-12-13 1:18 ` Manasi Navare
2019-12-13 3:11 ` Matt Roper
2019-12-13 20:05 ` Ville Syrjälä
2019-12-13 21:05 ` Manasi Navare
2019-12-13 21:17 ` Ville Syrjälä
2019-12-14 2:28 ` Manasi Navare
2019-12-16 12:03 ` Ville Syrjälä
2019-12-16 16:40 ` Manasi Navare
2019-12-16 17:11 ` Ville Syrjälä
2019-12-16 21:42 ` Manasi Navare
2019-12-16 14:37 ` Ville Syrjälä
2019-12-16 19:13 ` Manasi Navare
2019-12-16 21:37 ` Ville Syrjälä
2019-12-16 22:33 ` Manasi Navare
2019-12-16 22:58 ` Manasi Navare
2019-12-17 10:50 ` Ville Syrjälä
2019-12-17 19:04 ` Manasi Navare
2019-12-19 2:37 ` Manasi Navare
2019-12-11 21:14 ` [Intel-gfx] [PATCH 2/3] drm/i915/dp: Make port sync mode assignments only if all tiles present Manasi Navare
2019-12-13 1:03 ` Matt Roper
2019-12-13 1:09 ` Manasi Navare
2019-12-13 20:28 ` Ville Syrjälä
2019-12-13 20:53 ` Ville Syrjälä
2019-12-13 20:58 ` Manasi Navare
2019-12-11 21:14 ` [Intel-gfx] [PATCH 3/3] drm/i915/dp: Disable Port sync mode correctly on teardown Manasi Navare
2019-12-13 3:14 ` Matt Roper
2019-12-13 20:06 ` Ville Syrjälä [this message]
2019-12-13 20:40 ` Manasi Navare
2019-12-13 20:49 ` Ville Syrjälä
2019-12-12 1:53 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for i915 fixes to handle hotplug cases on 8K tiled monitor Patchwork
2019-12-12 2:36 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2019-12-12 13:49 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
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