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drm/i915: dual link pipe selection for bxt

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Pipe is assigned based on the port, but it should be
based on current crtc. Correcting the same in this patch.

v2: Use macro BXT_PIPE_SELECT(pipe) (Daniel)

Signed-off-by: Deepak M <m.deepak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Deepak M 2015-12-09 20:14:04 +05:30 committed by Daniel Vetter
parent c85f6c91ec
commit 56c4897841
2 changed files with 4 additions and 15 deletions
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4
drivers/gpu/drm/i915/i915_reg.h
View file

@ -8102,9 +8102,7 @@ enum skl_disp_power_wells {
#define RGB_FLIP_TO_BGR (1 << 2)
#define BXT_PIPE_SELECT_MASK (7 << 7)
#define BXT_PIPE_SELECT_C (2 << 7)
#define BXT_PIPE_SELECT_B (1 << 7)
#define BXT_PIPE_SELECT_A (0 << 7)
#define BXT_PIPE_SELECT(pipe) ((pipe) << 7)
#define _MIPIA_DATA_ADDRESS (dev_priv->mipi_mmio_base + 0xb108)
#define _MIPIC_DATA_ADDRESS (dev_priv->mipi_mmio_base + 0xb908)

15
drivers/gpu/drm/i915/intel_dsi.c
View file

@ -885,21 +885,12 @@ static void intel_dsi_prepare(struct intel_encoder *intel_encoder)
I915_WRITE(MIPI_CTRL(port), tmp |
READ_REQUEST_PRIORITY_HIGH);
} else if (IS_BROXTON(dev)) {
/*
* FIXME:
* BXT can connect any PIPE to any MIPI port.
* Select the pipe based on the MIPI port read from
* VBT for now. Pick PIPE A for MIPI port A and C
* for port C.
*/
enum pipe pipe = intel_crtc->pipe;
tmp = I915_READ(MIPI_CTRL(port));
tmp &= ~BXT_PIPE_SELECT_MASK;
if (port == PORT_A)
tmp |= BXT_PIPE_SELECT_A;
else if (port == PORT_C)
tmp |= BXT_PIPE_SELECT_C;
tmp |= BXT_PIPE_SELECT(pipe);
I915_WRITE(MIPI_CTRL(port), tmp);
}