[RFC 10/14] drm/i915: Enable Tearing effect trigger by GPIO pin

Gaurav K Singh
2015-05-29T10:40:07Z

While enabling MIPI Port in command mode, enable tearing effect
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 | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index f2fb3fc..484ed38 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -352,7 +352,11 @@ static void intel_dsi_port_enable(struct intel_encoder *encoder)
LANE_CONFIGURATION_DUAL_LINK_A;
}
/* assert ip_tg_enable signal */
- I915_WRITE(MIPI_PORT_CTRL(port), temp | DPI_ENABLE);
+ if (is_cmd_mode(intel_dsi))
+ I915_WRITE(MIPI_PORT_CTRL(port),
+ temp | TEARING_EFFECT_GPIO);
+ else
+ I915_WRITE(MIPI_PORT_CTRL(port), temp | DPI_ENABLE);
POSTING_READ(MIPI_PORT_CTRL(port));
}
}
--
1.7.9.5