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| author | Madhav Chauhan <madhav.chauhan@intel.com> | 2018-11-29 16:12:34 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2018-12-03 15:55:19 +0200 |
| commit | 1026bea00381fe01326d220c55731ee150b89e10 (patch) | |
| tree | 707df232cf43167a34775564f7e92c98e375371a /drivers/gpu/drm/i915/icl_dsi.c | |
| parent | 32250c8e0ef909884b7d5fa4f6c7ea73a6125565 (diff) | |
| download | linux-stable-1026bea00381fe01326d220c55731ee150b89e10.tar.gz linux-stable-1026bea00381fe01326d220c55731ee150b89e10.tar.bz2 linux-stable-1026bea00381fe01326d220c55731ee150b89e10.zip | |
drm/i915/icl: Ungate DSI clocks
Ungate the clocks on the selected port.
Signed-off-by: Madhav Chauhan <madhav.chauhan@intel.com>
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/2a01b3158feda624f98581b780854fe3df8c328d.1543500286.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 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c index e42a99fda191..e3aa9d3d2291 100644 --- a/drivers/gpu/drm/i915/icl_dsi.c +++ b/drivers/gpu/drm/i915/icl_dsi.c @@ -553,6 +553,23 @@ static void gen11_dsi_gate_clocks(struct intel_encoder *encoder) mutex_unlock(&dev_priv->dpll_lock); } +static void gen11_dsi_ungate_clocks(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); + u32 tmp; + enum port port; + + mutex_lock(&dev_priv->dpll_lock); + tmp = I915_READ(DPCLKA_CFGCR0_ICL); + for_each_dsi_port(port, intel_dsi->ports) { + tmp &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port); + } + + I915_WRITE(DPCLKA_CFGCR0_ICL, tmp); + mutex_unlock(&dev_priv->dpll_lock); +} + static void gen11_dsi_configure_transcoder(struct intel_encoder *encoder, const struct intel_crtc_state *pipe_config) @@ -1061,6 +1078,7 @@ static void gen11_dsi_disable_port(struct intel_encoder *encoder) u32 tmp; enum port port; + gen11_dsi_ungate_clocks(encoder); for_each_dsi_port(port, intel_dsi->ports) { tmp = I915_READ(DDI_BUF_CTL(port)); tmp &= ~DDI_BUF_CTL_ENABLE; @@ -1072,6 +1090,7 @@ static void gen11_dsi_disable_port(struct intel_encoder *encoder) DRM_ERROR("DDI port:%c buffer not idle\n", port_name(port)); } + gen11_dsi_ungate_clocks(encoder); } static void gen11_dsi_disable_io_power(struct intel_encoder *encoder) |