p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

drm/i915: Dual link needs Shutdown and Turn on packet for both ports 

For dual link MIPI panels, SHUTDOWN packet needs to send to both Ports
A & C during MIPI encoder disabling sequence. Similarly, TURN ON packet
to be sent to both Ports during MIPI encoder enabling sequence.

v2: Address review comments by Jani
    - Used a for loop instead of do-while loop.

v3: Used for_each_dsi_port macro instead of for loop

Signed-off-by: Gaurav K Singh <gaurav.k.singh@intel.com>
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>
This commit is contained in:
Gaurav K Singh 2014-12-04 10:58:51 +05:30 committed by Daniel Vetter
parent a9da9bce88
commit 4510cd779e
1 changed files with 15 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/gpu/drm/i915/intel_dsi_cmd.c
View File

@ -385,8 +385,7 @@ int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs)
struct drm_encoder *encoder = &intel_dsi->base.base;
struct drm_device *dev = encoder->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
enum port port = intel_dsi_pipe_to_port(intel_crtc->pipe);
enum port port;
u32 mask;
/* XXX: pipe, hs */
@ -395,18 +394,23 @@ int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs)
else
cmd |= DPI_LP_MODE;
/* clear bit */
I915_WRITE(MIPI_INTR_STAT(port), SPL_PKT_SENT_INTERRUPT);
for_each_dsi_port(port, intel_dsi->ports) {
/* clear bit */
I915_WRITE(MIPI_INTR_STAT(port), SPL_PKT_SENT_INTERRUPT);
/* XXX: old code skips write if control unchanged */
if (cmd == I915_READ(MIPI_DPI_CONTROL(port)))
DRM_ERROR("Same special packet %02x twice in a row.\n", cmd);
/* XXX: old code skips write if control unchanged */
if (cmd == I915_READ(MIPI_DPI_CONTROL(port)))
DRM_ERROR("Same special packet %02x twice in a row.\n",
cmd);
I915_WRITE(MIPI_DPI_CONTROL(port), cmd);
I915_WRITE(MIPI_DPI_CONTROL(port), cmd);
mask = SPL_PKT_SENT_INTERRUPT;
if (wait_for((I915_READ(MIPI_INTR_STAT(port)) & mask) == mask, 100))
DRM_ERROR("Video mode command 0x%08x send failed.\n", cmd);
mask = SPL_PKT_SENT_INTERRUPT;
if (wait_for((I915_READ(MIPI_INTR_STAT(port)) & mask) == mask,
100))
DRM_ERROR("Video mode command 0x%08x send failed.\n",
cmd);
}
return 0;
}