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| author | Shobhit Kumar <shobhit.kumar@intel.com> | 2014-04-09 10:29:34 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-04-09 21:54:30 +0200 |
| commit | 339023ec342a63f885d8100eafe84dac515a0c8f (patch) | |
| tree | a9ef4c63549d2b97c970faf6ba5658dbcc0917aa /drivers/gpu/drm/i915/intel_dsi.c | |
| parent | drm/i915: Parameterize the Clockstop and escape_clk_div (diff) | |
| download | linux-339023ec342a63f885d8100eafe84dac515a0c8f.tar.xz linux-339023ec342a63f885d8100eafe84dac515a0c8f.zip | |
drm/i915: Panel commands can be sent only when clock is in LP11
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dsi.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index dfcdb1068495..d8eccda04767 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -229,6 +229,23 @@ static void intel_dsi_disable(struct intel_encoder *encoder) msleep(2); } + /* Panel commands can be sent when clock is in LP11 */ + I915_WRITE(MIPI_DEVICE_READY(pipe), 0x0); + + temp = I915_READ(MIPI_CTRL(pipe)); + temp &= ~ESCAPE_CLOCK_DIVIDER_MASK; + I915_WRITE(MIPI_CTRL(pipe), temp | + intel_dsi->escape_clk_div << + ESCAPE_CLOCK_DIVIDER_SHIFT); + + I915_WRITE(MIPI_EOT_DISABLE(pipe), CLOCKSTOP); + + temp = I915_READ(MIPI_DSI_FUNC_PRG(pipe)); + temp &= ~VID_MODE_FORMAT_MASK; + I915_WRITE(MIPI_DSI_FUNC_PRG(pipe), temp); + + I915_WRITE(MIPI_DEVICE_READY(pipe), 0x1); + /* if disable packets are sent before sending shutdown packet then in * some next enable sequence send turn on packet error is observed */ if (intel_dsi->dev.dev_ops->disable) |