[Intel-gfx] [PATCH 04/12] drm/i915/icl: DSI transcoder config for command mode

[Madhav Chauhan]

This patch configures DSI transcoder behavior when operating
in command mode.

Signed-off-by: Madhav Chauhan <madhav.chauhan at intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h | 1 +
 drivers/gpu/drm/i915/icl_dsi.c  | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 81dc656..de671f2 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -10447,6 +10447,7 @@ enum skl_power_gate {
 #define  CMD_MODE_TE_GATE		0x1
 #define  VIDEO_MODE_SYNC_EVENT		0x2
 #define  VIDEO_MODE_SYNC_PULSE		0x3
+#define  TE_SOURCE_GPIO			(1 << 27)
 #define  LINK_READY			(1 << 20)
 #define  PIX_FMT(x)			(x << 16)
 #define  PIX_FMT_MASK			(0x3 << 16)
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
index a175349..b189398 100644
--- a/drivers/gpu/drm/i915/icl_dsi.c
+++ b/drivers/gpu/drm/i915/icl_dsi.c
@@ -625,6 +625,10 @@ static void gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
 			} else {
 				DRM_ERROR("DSI Video Mode unsupported\n");
 			}
+		} else { /* command mode */
+			tmp &= ~OP_MODE_MASK;
+			tmp |= OP_MODE(CMD_MODE_TE_GATE);
+			tmp |= TE_SOURCE_GPIO;
 		}
 
 		I915_WRITE(DSI_TRANS_FUNC_CONF(dsi_trans), tmp);
-- 
2.7.4