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tools: Added intel_dpio_read and intel_dpio_write

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In Valleyview the DPLL and lane control registers are accessible only
through side band fabric called DPIO. Added two tools to read and write
registers residing in this space.

v2: Moved the core read/write functions to lib/intel_dpio.c based on
Ben's feedback

Signed-off-by: Vijay Purushothaman <vijay.a.purushothaman@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Vijay Purushothaman
2012-08-17 18:06:52 +05:30
committed by Daniel Vetter
parent 082826de6c
commit 4fc76adf31
8 changed files with 250 additions and 0 deletions
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lib/intel_reg.h
+13
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@@ -3741,5 +3741,18 @@ typedef enum {
#define SFUSE_STRAP_DDIC_DETECTED (1<<1)
#define SFUSE_STRAP_DDID_DETECTED (1<<0)
/* Valleyview related items */
/* Valleyview DPIO registers */
#define VLV_DISPLAY_BASE 0x180000
#define DPIO_PKT 0x2100
#define DPIO_RID (0 << 24)
#define DPIO_OP_WRITE (1 << 16)
#define DPIO_OP_READ (0 << 16)
#define DPIO_PORTID (0x12 << 8)
#define DPIO_BYTE (0xf << 4)
#define DPIO_BUSY (1 << 0)
#define DPIO_DATA 0x2104
#define DPIO_REG 0x2108
#endif /* _I810_REG_H */