From: Deepak M <m.deepak@xxxxxxxxx>
Program the clk lane and tlpx time count registers
to configure DSI PHY.
v2: Addressed Jani's Review comments(renamed bit field macros)
Signed-off-by: Deepak M <m.deepak@xxxxxxxxx>
Signed-off-by: Madhav Chauhan <madhav.chauhan@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 18 ++++++++++++++++++
drivers/gpu/drm/i915/intel_dsi.c | 15 +++++++++++++++
2 files changed, 33 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 8e47b59..03858f9 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8550,6 +8550,24 @@ 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 GLK_DPHY_TLPX_TIME_CNT_SHIFT 0
+#define GLK_DPHY_TLPX_TIME_CNT_MASK (0xff << 0)
+
+#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)
+#define GLK_MIPI_CLK_LANE_HS_PREP_SHIFT 0
+#define GLK_MIPI_CLK_LANE_HS_PREP_MASK (0xff << 0)
+#define GLK_MIPI_CLK_LANE_HS_ZERO_SHIFT 8
+#define GLK_MIPI_CLK_LANE_HS_ZERO_MASK (0xff00 << 0)
+#define GLK_MIPI_CLK_LANE_HS_TRAIL_SHIFT 16
+#define GLK_MIPI_CLK_LANE_HS_TRAIL_MASK (0xff0000 << 0)
+#define GLK_MIPI_CLK_LANE_HS_EXIT_SHIFT 24
+#define GLK_MIPI_CLK_LANE_HS_EXIT_MASK (0xff000000 << 0)
+
/* 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)
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 6b63355..b78c686 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -1123,6 +1123,7 @@ static void intel_dsi_prepare(struct intel_encoder *intel_encoder,
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc);
struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
+ struct mipi_config *mipi_config = dev_priv->vbt.dsi.config;
const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
enum port port;
unsigned int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
@@ -1278,6 +1279,20 @@ 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);
+ val = ((mipi_config->ths_prepare <<
+ GLK_MIPI_CLK_LANE_HS_PREP_SHIFT) |
+ (mipi_config->ths_prepare_hszero <<
+ GLK_MIPI_CLK_LANE_HS_ZERO_SHIFT) |
+ (mipi_config->ths_trail <<
+ GLK_MIPI_CLK_LANE_HS_TRAIL_SHIFT) |
+ (mipi_config->ths_exit <<
+ GLK_MIPI_CLK_LANE_HS_EXIT_SHIFT));
+ I915_WRITE(MIPI_CLK_LANE_TIMING(port), val);
+ }
+
/* 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
--
1.9.1
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