drm/i915/tgl: Fix the read of the DDI that transcoder is attached to

On TGL this register do not map directly to port, it was already handled when setting it(TGL_TRANS_DDI_SELECT_PORT()) but not when reading it. To make it consisntent adding a macro for the older gens too. v2: Adding TGL_PORT_TRANS_DDI_SELECT() so all future users can reuse it (Lucas) v3: Missed parentheses arround val (Jose) v4: Renamed TGL_PORT_TRANS_DDI_SELECT to TGL_TRANS_DDI_FUNC_CTL_VAL_TO_PORT (Lucas) Added TRANS_DDI_FUNC_CTL_VAL_TO_PORT (Lucas) Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by: José Roberto de Souza <jose.souza@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190808004935.1787-2-jose.souza@intel.com
mariux64 · Aug 8, 2019 · 9749a5b · 9749a5b
1 parent 6aa3bef
commit 9749a5b
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Showing 2 changed files with 4 additions and 3 deletions.
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
@@ -10354,10 +10354,9 @@ static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
 	tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
 
 	if (INTEL_GEN(dev_priv) >= 12)
-		port = (tmp & TGL_TRANS_DDI_PORT_MASK) >>
-			TGL_TRANS_DDI_PORT_SHIFT;
+		port = TGL_TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
 	else
-		port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
+		port = TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
 
 	if (INTEL_GEN(dev_priv) >= 11)
 		icelake_get_ddi_pll(dev_priv, port, pipe_config);

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
@@ -9432,6 +9432,8 @@ enum skl_power_gate {
 #define  TGL_TRANS_DDI_PORT_MASK	(0xf << TGL_TRANS_DDI_PORT_SHIFT)
 #define  TRANS_DDI_SELECT_PORT(x)	((x) << TRANS_DDI_PORT_SHIFT)
 #define  TGL_TRANS_DDI_SELECT_PORT(x)	(((x) + 1) << TGL_TRANS_DDI_PORT_SHIFT)
+#define  TRANS_DDI_FUNC_CTL_VAL_TO_PORT(val)	 (((val) & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT)
+#define  TGL_TRANS_DDI_FUNC_CTL_VAL_TO_PORT(val) (((val) & TGL_TRANS_DDI_PORT_MASK >> TGL_TRANS_DDI_PORT_SHIFT) - 1)
 #define  TRANS_DDI_MODE_SELECT_MASK	(7 << 24)
 #define  TRANS_DDI_MODE_SELECT_HDMI	(0 << 24)
 #define  TRANS_DDI_MODE_SELECT_DVI	(1 << 24)