[Intel-gfx] [PATCH 17/41] drm/i915: add port clock selection support for HSW
Eugeni Dodonov
eugeni.dodonov at intel.com
Thu Mar 29 17:32:33 CEST 2012
Multiple clocks can drive different outputs.
v2: use the port enums to access individual ports
v1 Reviewed-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov at intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index db03446..81b076c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3974,4 +3974,27 @@
#define SPLL_PLL_FREQ_810MHz (0<<26)
#define SPLL_PLL_FREQ_1350MHz (1<<26)
+/* Port clock selection */
+#define PORT_CLK_SEL_A 0x46100
+#define PORT_CLK_SEL_B 0x46104
+#define PORT_CLK_SEL(port) _PORT(port, \
+ PORT_CLK_SEL_A, \
+ PORT_CLK_SEL_B)
+#define PORT_CLK_SEL_LCPLL_2700 (0<<29)
+#define PORT_CLK_SEL_LCPLL_1350 (1<<29)
+#define PORT_CLK_SEL_LCPLL_810 (2<<29)
+#define PORT_CLK_SEL_SPLL (3<<29)
+#define PORT_CLK_SEL_WRPLL1 (4<<29)
+#define PORT_CLK_SEL_WRPLL2 (5<<29)
+
+/* Pipe clock selection */
+#define PIPE_CLK_SEL_A 0x46140
+#define PIPE_CLK_SEL_B 0x46144
+#define PIPE_CLK_SEL(pipe) _PIPE(pipe, \
+ PIPE_CLK_SEL_A, \
+ PIPE_CLK_SEL_B)
+/* For each pipe, we need to select the corresponding port clock */
+#define PIPE_CLK_SEL_DISABLED (0x0<<29)
+#define PIPE_CLK_SEL_PORT(x) ((x+1)<<29)
+
#endif /* _I915_REG_H_ */
--
1.7.9.5
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