We'll make more use of it in the future.
Cc: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/icl_dsi.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index ef53ed6d3ecf..de3743233dcb 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -301,18 +301,26 @@ static void configure_dual_link_mode(struct intel_encoder *encoder,
I915_WRITE(DSS_CTL1, dss_ctl1);
}
+/* aka DSI 8X clock */
+static int afe_clk(struct intel_encoder *encoder)
+{
+ struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+ int bpp;
+
+ bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
+
+ return DIV_ROUND_CLOSEST(intel_dsi->pclk * bpp, intel_dsi->lane_count);
+}
+
static void gen11_dsi_program_esc_clk_div(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
enum port port;
- u32 bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
- u32 afe_clk_khz; /* 8X Clock */
+ int afe_clk_khz;
u32 esc_clk_div_m;
- afe_clk_khz = DIV_ROUND_CLOSEST(intel_dsi->pclk * bpp,
- intel_dsi->lane_count);
-
+ afe_clk_khz = afe_clk(encoder);
esc_clk_div_m = DIV_ROUND_UP(afe_clk_khz, DSI_MAX_ESC_CLK);
for_each_dsi_port(port, intel_dsi->ports) {
--
2.20.1
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