diff options
| author | Andrzej Hajda <andrzej.hajda@intel.com> | 2022-12-19 10:24:27 +0100 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2023-01-30 14:57:07 +0200 |
| commit | fceeca7f3cf1c2b8628cd76c936b51271b793b1b (patch) | |
| tree | 95204ae23d2b1c6de527349e523aa9ed5ef69896 | |
| parent | 60bb4478f7de8ad45bc9464f94d766d8ec807606 (diff) | |
drm/i915/display/vlv: fix pixel overlap register update
To update properly bits in the register the mask should be used
to clear old value and then the result should be or-ed with new
value, for such updates there is separate helper intel_de_rmw.
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221219092428.2515430-1-andrzej.hajda@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/vlv_dsi.c | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c index 2289f6b1b4eb..d9fa3258c771 100644 --- a/drivers/gpu/drm/i915/display/vlv_dsi.c +++ b/drivers/gpu/drm/i915/display/vlv_dsi.c @@ -649,23 +649,17 @@ static void intel_dsi_port_enable(struct intel_encoder *encoder, enum port port; if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) { - u32 temp; + u32 temp = intel_dsi->pixel_overlap; + if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) { - for_each_dsi_port(port, intel_dsi->ports) { - temp = intel_de_read(dev_priv, - MIPI_CTRL(port)); - temp &= ~BXT_PIXEL_OVERLAP_CNT_MASK | - intel_dsi->pixel_overlap << - BXT_PIXEL_OVERLAP_CNT_SHIFT; - intel_de_write(dev_priv, MIPI_CTRL(port), - temp); - } + for_each_dsi_port(port, intel_dsi->ports) + intel_de_rmw(dev_priv, MIPI_CTRL(port), + BXT_PIXEL_OVERLAP_CNT_MASK, + temp << BXT_PIXEL_OVERLAP_CNT_SHIFT); } else { - temp = intel_de_read(dev_priv, VLV_CHICKEN_3); - temp &= ~PIXEL_OVERLAP_CNT_MASK | - intel_dsi->pixel_overlap << - PIXEL_OVERLAP_CNT_SHIFT; - intel_de_write(dev_priv, VLV_CHICKEN_3, temp); + intel_de_rmw(dev_priv, VLV_CHICKEN_3, + PIXEL_OVERLAP_CNT_MASK, + temp << PIXEL_OVERLAP_CNT_SHIFT); } } |