drm/i915/glk: Program new MIPI DSI PHY registers for GLK

Program the clk lane and tlpx time count registers
to configure DSI PHY.

v2: Addressed Jani's Review comments(renamed bit field macros)
v3: Program clk lane timing reg same as dphy param reg.
v4: Removed "line over 80 character" warning

Signed-off-by: Deepak M <m.deepak@intel.com>
Signed-off-by: Madhav Chauhan <madhav.chauhan@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1487335415-14766-3-git-send-email-madhav.chauhan@intel.com

drivers/gpu/drm/i915/i915_reg.h

@@ -8625,6 +8625,14 @@ enum {
 #define  LP_BYTECLK_SHIFT				0
 #define  LP_BYTECLK_MASK				(0xffff << 0)
 
+#define _MIPIA_TLPX_TIME_COUNT		(dev_priv->mipi_mmio_base + 0xb0a4)
+#define _MIPIC_TLPX_TIME_COUNT		(dev_priv->mipi_mmio_base + 0xb8a4)
+#define MIPI_TLPX_TIME_COUNT(port)	 _MMIO_MIPI(port, _MIPIA_TLPX_TIME_COUNT, _MIPIC_TLPX_TIME_COUNT)
+
+#define _MIPIA_CLK_LANE_TIMING		(dev_priv->mipi_mmio_base + 0xb098)
+#define _MIPIC_CLK_LANE_TIMING		(dev_priv->mipi_mmio_base + 0xb898)
+#define MIPI_CLK_LANE_TIMING(port)	 _MMIO_MIPI(port, _MIPIA_CLK_LANE_TIMING, _MIPIC_CLK_LANE_TIMING)
+
 /* bits 31:0 */
 #define _MIPIA_LP_GEN_DATA		(dev_priv->mipi_mmio_base + 0xb064)
 #define _MIPIC_LP_GEN_DATA		(dev_priv->mipi_mmio_base + 0xb864)

drivers/gpu/drm/i915/intel_dsi.c

@@ -1309,6 +1309,14 @@ static void intel_dsi_prepare(struct intel_encoder *intel_encoder,
 		 */
 		I915_WRITE(MIPI_LP_BYTECLK(port), intel_dsi->lp_byte_clk);
 
+		if (IS_GEMINILAKE(dev_priv)) {
+			I915_WRITE(MIPI_TLPX_TIME_COUNT(port),
+					intel_dsi->lp_byte_clk);
+			/* Shadow of DPHY reg */
+			I915_WRITE(MIPI_CLK_LANE_TIMING(port),
+					intel_dsi->dphy_reg);
+		}
+
 		/* the bw essential for transmitting 16 long packets containing
 		 * 252 bytes meant for dcs write memory command is programmed in
 		 * this register in terms of byte clocks. based on dsi transfer