[PATCH 18/71] drm/i915/chv: Add vlv_pipe_to_channel

ville.syrjala
2014-04-09T10:30:35Z

From: Chon Ming Lee <chon.ming.lee@intel.com>

Cherryview has 3 pipes. Some of the pll dpio offset calculation is
based on pipe number. Need to use vlv_pipe_to_channel to calculate the
correct phy channel to use for the pipe.

Signed-off-by: Chon Ming Lee <chon.ming.lee@intel.com>
---
drivers/gpu/drm/i915/intel_drv.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 087e471..e572799 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -544,6 +544,20 @@ vlv_dport_to_channel(struct intel_digital_port *dport)
}
}

+static inline int
+vlv_pipe_to_channel(enum pipe pipe)
+{
+ switch (pipe) {
+ case PIPE_A:
+ case PIPE_C:
+ return DPIO_CH0;
+ case PIPE_B:
+ return DPIO_CH1;
+ default:
+ BUG();
+ }
+}
+
static inline struct drm_crtc *
intel_get_crtc_for_pipe(struct drm_device *dev, int pipe)
{
--
1.8.3.2