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[RFC,08/14] drm/i915: Disable Tearing effect trigger by GPIO pin

Message ID 1432895827-5185-9-git-send-email-gaurav.k.singh@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Gaurav K Singh May 29, 2015, 10:37 a.m. UTC 
While disabling MIPI Port in command mode, disable TE trigger by GPIO pin.

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_dsi.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index aeea289..91ed2c2 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -367,8 +367,12 @@  static void intel_dsi_port_disable(struct intel_encoder *encoder)
 
 	for_each_dsi_port(port, intel_dsi->ports) {
 		/* de-assert ip_tg_enable signal */
-		temp = I915_READ(MIPI_PORT_CTRL(port));
-		I915_WRITE(MIPI_PORT_CTRL(port), temp & ~DPI_ENABLE);
+		if (is_cmd_mode(intel_dsi)) {
+			I915_WRITE(MIPI_PORT_CTRL(port), 0);
+		} else {
+			temp = I915_READ(MIPI_PORT_CTRL(port));
+			I915_WRITE(MIPI_PORT_CTRL(port), temp & ~DPI_ENABLE);
+		}
 		POSTING_READ(MIPI_PORT_CTRL(port));
 	}
 }