[07/12] drm/i915/icl: Configure TE interrupts for DSI

Commit Message

Chauhan, Madhav Aug. 8, 2018, 12:15 p.m. UTC

This patch implements a helper function for enabling
or disabling TE interrupts.

Signed-off-by: Madhav Chauhan <[e-mail]>
---
 drivers/gpu/drm/i915/icl_dsi.c   | 20 ++++++++++++++++++++
 drivers/gpu/drm/i915/intel_drv.h |  2 ++
 2 files changed, 22 insertions(+)

Patch

diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
index bf7ad5e..0ae62a1 100644
--- a/drivers/gpu/drm/i915/icl_dsi.c
+++ b/drivers/gpu/drm/i915/icl_dsi.c
@@ -46,6 +46,26 @@  struct intel_encoder *gen11_dsi_find_cmd_mode_encoder(struct intel_crtc *crtc)
 	return NULL;
 }
 
+void gen11_dsi_configure_te_interrupt(struct intel_encoder *encoder,
+				      bool enable)
+{
+	struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+	u32 tmp;
+	enum port port;
+
+	for_each_dsi_port(port, intel_dsi->ports) {
+		tmp = I915_READ(GEN8_DE_PORT_IMR);
+		if (enable)
+			tmp |= (port == PORT_A ? ICL_DSI0_TE : ICL_DSI1_TE);
+		else
+			tmp &= (port == PORT_A ? ~ICL_DSI0_TE : ~ICL_DSI1_TE);
+
+		I915_WRITE(GEN8_DE_PORT_IMR, tmp);
+		POSTING_READ(GEN8_DE_PORT_IMR);
+	}
+}
+
 static void wait_for_dsi_hdr_credit_release(struct intel_dsi *intel_dsi,
 					    enum transcoder dsi_trans)
 {
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 7dadfc1..e39f812 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1757,6 +1757,8 @@  void vlv_dsi_init(struct drm_i915_private *dev_priv);
 /* icl_dsi.c */
 void intel_gen11_dsi_init(struct drm_i915_private *dev_priv);
 struct intel_encoder *gen11_dsi_find_cmd_mode_encoder(struct intel_crtc *crtc);
+void gen11_dsi_configure_te_interrupt(struct intel_encoder *encoder,
+				      bool enable);
 
 /* intel_dsi_dcs_backlight.c */
 int intel_dsi_dcs_init_backlight_funcs(struct intel_connector *intel_connector);