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drm/i915: add port clock selection support for HSW 

Multiple clocks can drive different outputs.

v2: use the port enums to access individual ports

v1 Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Eugeni Dodonov 2012-03-29 12:32:33 -03:00 committed by Daniel Vetter
parent e93ea06aa0
commit fec9181ca4
1 changed files with 23 additions and 0 deletions
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23
drivers/gpu/drm/i915/i915_reg.h
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@ -4142,4 +4142,27 @@
#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_ */