diff options
| author | Madhav Chauhan <madhav.chauhan@intel.com> | 2018-10-30 14:56:14 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2018-10-31 14:13:16 +0300 |
| commit | 4e123bd3039d585deb989a84dec04f9e0acda9d3 (patch) | |
| tree | 685ec911dc1c62ad2c848659b0527b0b4e11c2d2 /drivers/gpu/drm/i915/icl_dsi.c | |
| parent | d9d996b6ca4393165e2ca5630fbdf3f7a2482028 (diff) | |
| download | linux-4e123bd3039d585deb989a84dec04f9e0acda9d3.tar.xz | |
drm/i915/icl: Disable DSI transcoders
This patch disables transcoders by writing to TRANS_CONF
registers for each DSI ports.
v2 by Jani:
- Wait for pipeconf active to go low
Signed-off-by: Madhav Chauhan <madhav.chauhan@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/c76035309fa721322cf9c1ca7fc42b822937c2f3.1540900289.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/icl_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/icl_dsi.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c index f7f48ff147d0..644ad7475920 100644 --- a/drivers/gpu/drm/i915/icl_dsi.c +++ b/drivers/gpu/drm/i915/icl_dsi.c @@ -777,6 +777,29 @@ gen11_dsi_pre_enable(struct intel_encoder *encoder, intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON); } +static void gen11_dsi_disable_transcoder(struct intel_encoder *encoder) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); + enum port port; + enum transcoder dsi_trans; + u32 tmp; + + for_each_dsi_port(port, intel_dsi->ports) { + dsi_trans = dsi_port_to_transcoder(port); + + /* disable transcoder */ + tmp = I915_READ(PIPECONF(dsi_trans)); + tmp &= ~PIPECONF_ENABLE; + I915_WRITE(PIPECONF(dsi_trans), tmp); + + /* wait for transcoder to be disabled */ + if (intel_wait_for_register(dev_priv, PIPECONF(dsi_trans), + I965_PIPECONF_ACTIVE, 0, 50)) + DRM_ERROR("DSI trancoder not disabled\n"); + } +} + static void __attribute__((unused)) gen11_dsi_disable( struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, @@ -787,4 +810,7 @@ static void __attribute__((unused)) gen11_dsi_disable( /* step1: turn off backlight */ intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_OFF); intel_panel_disable_backlight(old_conn_state); + + /* step2d,e: disable transcoder and wait */ + gen11_dsi_disable_transcoder(encoder); } |