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[02/14] drm/i915: Add support for TEAR ON Sequence

Message ID 1443563651-11596-3-git-send-email-gaurav.k.singh@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Gaurav K Singh Sept. 29, 2015, 9:53 p.m. UTC 
For command mode panel, panel's fb enabling and tearing configuration
is done as part of TEAR ON sequence. This patch parses and executes
TEAR ON sequence for MIPI command mode.

Signed-off-by: Gaurav K Singh <gaurav.k.singh@intel.com>
Signed-off-by: Yogesh Mohan Marimuthu <yogesh.mohan.marimuthu@intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
---
 drivers/gpu/drm/i915/intel_bios.h          |    2 ++
 drivers/gpu/drm/i915/intel_dsi_panel_vbt.c |    9 ++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h
index 1b7417e..d7fdb10 100644
--- a/drivers/gpu/drm/i915/intel_bios.h
+++ b/drivers/gpu/drm/i915/intel_bios.h
@@ -948,6 +948,8 @@  enum mipi_seq {
 	MIPI_SEQ_DISPLAY_ON,
 	MIPI_SEQ_DISPLAY_OFF,
 	MIPI_SEQ_DEASSERT_RESET,
+	MIPI_SEQ_TEAR_ON,
+	MIPI_SEQ_TEAR_OFF,
 	MIPI_SEQ_MAX
 };
 
diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
index feeca59..cacd5b8 100644
--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -251,7 +251,9 @@  static const char * const seq_name[] = {
 	"MIPI_SEQ_INIT_OTP",
 	"MIPI_SEQ_DISPLAY_ON",
 	"MIPI_SEQ_DISPLAY_OFF",
-	"MIPI_SEQ_DEASSERT_RESET"
+	"MIPI_SEQ_DEASSERT_RESET",
+	"MIPI_SEQ_TEAR_ON",
+	"MIPI_SEQ_TEAR_OFF"
 };
 
 static void generic_exec_sequence(struct intel_dsi *intel_dsi, const u8 *data)
@@ -320,6 +322,11 @@  static int vbt_panel_prepare(struct drm_panel *panel)
 	sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
 	generic_exec_sequence(intel_dsi, sequence);
 
+	if (intel_dsi->operation_mode == INTEL_DSI_COMMAND_MODE) {
+		sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_TEAR_ON];
+		generic_exec_sequence(intel_dsi, sequence);
+	}
+
 	return 0;
 }