On Thu, 04 Dec 2014, Gaurav K Singh <gaurav.k.singh@xxxxxxxxx> wrote:
> 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@xxxxxxxxx>
> Signed-off-by: Shobhit Kumar <shobhit.kumar@xxxxxxxxx>
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_dsi_cmd.c | 26 +++++++++++++++-----------
> 1 file changed, 15 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dsi_cmd.c b/drivers/gpu/drm/i915/intel_dsi_cmd.c
> index 8e30684..562811c 100644
> --- a/drivers/gpu/drm/i915/intel_dsi_cmd.c
> +++ b/drivers/gpu/drm/i915/intel_dsi_cmd.c
> @@ -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;
> }
> --
> 1.7.9.5
>
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--
Jani Nikula, Intel Open Source Technology Center
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