drm/i915: Add Valleyview lane control definitions

Added DPIO data lane register definitions for Valleyview
Signed-off-by: NVijay Purushothaman <vijay.a.purushothaman@intel.com>
Signed-off-by: NBen Widawsky <benjamin.widawsky@intel.com>
Reviewed-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_reg.h

@@ -369,6 +369,7 @@
 #define   DPIO_PLL_MODESEL_SHIFT	24 /* 3 bits */
 #define   DPIO_BIAS_CURRENT_CTL_SHIFT	21 /* 3 bits, always 0x7 */
 #define   DPIO_PLL_REFCLK_SEL_SHIFT	16 /* 2 bits */
+#define   DPIO_PLL_REFCLK_SEL_MASK	3
 #define   DPIO_DRIVER_CTL_SHIFT		12 /* always set to 0x8 */
 #define   DPIO_CLK_BIAS_CTL_SHIFT	8 /* always set to 0x5 */
 #define _DPIO_REFSFR_B			0x8034
@@ -384,6 +385,13 @@
 
 #define DPIO_FASTCLK_DISABLE		0x8100
 
+#define _DPIO_DATA_LANE0		0x0220
+#define _DPIO_DATA_LANE1		0x0420
+#define _DPIO_DATA_LANE2		0x2620
+#define _DPIO_DATA_LANE3		0x2820
+#define DPIO_DATA_LANE_A(pipe) _PIPE(pipe, _DPIO_DATA_LANE0, _DPIO_DATA_LANE2)
+#define DPIO_DATA_LANE_B(pipe) _PIPE(pipe, _DPIO_DATA_LANE1, _DPIO_DATA_LANE3)
+
 /*
  * Fence registers
  */