From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Move intel_vdsc_min_cdclk() into intel_vdsc.c from intel_cdclk.c
so that details about DSC are better contained.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_cdclk.c | 46 ----------------------
drivers/gpu/drm/i915/display/intel_vdsc.c | 46 ++++++++++++++++++++++
drivers/gpu/drm/i915/display/intel_vdsc.h | 1 +
3 files changed, 47 insertions(+), 46 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index d376f7bccf21..9f38dd14b2d8 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -37,7 +37,6 @@
#include "intel_cdclk.h"
#include "intel_crtc.h"
#include "intel_de.h"
-#include "intel_dp.h"
#include "intel_display_types.h"
#include "intel_mchbar_regs.h"
#include "intel_pci_config.h"
@@ -2805,51 +2804,6 @@ static int intel_planes_min_cdclk(const struct intel_crtc_state *crtc_state)
return min_cdclk;
}
-static int intel_vdsc_min_cdclk(const struct intel_crtc_state *crtc_state)
-{
- struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
- struct intel_display *display = to_intel_display(crtc);
- int num_vdsc_instances = intel_dsc_get_num_vdsc_instances(crtc_state);
- int min_cdclk;
-
- if (!crtc_state->dsc.compression_enable)
- return 0;
-
- /*
- * When we decide to use only one VDSC engine, since
- * each VDSC operates with 1 ppc throughput, pixel clock
- * cannot be higher than the VDSC clock (cdclk)
- * If there 2 VDSC engines, then pixel clock can't be higher than
- * VDSC clock(cdclk) * 2 and so on.
- */
- min_cdclk = DIV_ROUND_UP(crtc_state->pixel_rate, num_vdsc_instances);
-
- if (crtc_state->joiner_pipes) {
- int pixel_clock = intel_dp_mode_to_fec_clock(crtc_state->hw.adjusted_mode.clock);
-
- /*
- * According to Bigjoiner bw check:
- * compressed_bpp <= PPC * CDCLK * Big joiner Interface bits / Pixel clock
- *
- * We have already computed compressed_bpp, so now compute the min CDCLK that
- * is required to support this compressed_bpp.
- *
- * => CDCLK >= compressed_bpp * Pixel clock / (PPC * Bigjoiner Interface bits)
- *
- * Since PPC = 2 with bigjoiner
- * => CDCLK >= compressed_bpp * Pixel clock / 2 * Bigjoiner Interface bits
- */
- int bigjoiner_interface_bits = DISPLAY_VER(display) >= 14 ? 36 : 24;
- int min_cdclk_bj =
- (fxp_q4_to_int_roundup(crtc_state->dsc.compressed_bpp_x16) *
- pixel_clock) / (2 * bigjoiner_interface_bits);
-
- min_cdclk = max(min_cdclk, min_cdclk_bj);
- }
-
- return min_cdclk;
-}
-
int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
{
int min_cdclk;
diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
index 40525f5c4c42..e6cb712373a9 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -14,6 +14,7 @@
#include "intel_crtc.h"
#include "intel_de.h"
#include "intel_display_types.h"
+#include "intel_dp.h"
#include "intel_dsi.h"
#include "intel_qp_tables.h"
#include "intel_vdsc.h"
@@ -1003,3 +1004,48 @@ void intel_vdsc_state_dump(struct drm_printer *p, int indent,
intel_vdsc_dump_state(p, indent, crtc_state);
drm_dsc_dump_config(p, indent, &crtc_state->dsc.config);
}
+
+int intel_vdsc_min_cdclk(const struct intel_crtc_state *crtc_state)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+ struct intel_display *display = to_intel_display(crtc);
+ int num_vdsc_instances = intel_dsc_get_num_vdsc_instances(crtc_state);
+ int min_cdclk;
+
+ if (!crtc_state->dsc.compression_enable)
+ return 0;
+
+ /*
+ * When we decide to use only one VDSC engine, since
+ * each VDSC operates with 1 ppc throughput, pixel clock
+ * cannot be higher than the VDSC clock (cdclk)
+ * If there 2 VDSC engines, then pixel clock can't be higher than
+ * VDSC clock(cdclk) * 2 and so on.
+ */
+ min_cdclk = DIV_ROUND_UP(crtc_state->pixel_rate, num_vdsc_instances);
+
+ if (crtc_state->joiner_pipes) {
+ int pixel_clock = intel_dp_mode_to_fec_clock(crtc_state->hw.adjusted_mode.clock);
+
+ /*
+ * According to Bigjoiner bw check:
+ * compressed_bpp <= PPC * CDCLK * Big joiner Interface bits / Pixel clock
+ *
+ * We have already computed compressed_bpp, so now compute the min CDCLK that
+ * is required to support this compressed_bpp.
+ *
+ * => CDCLK >= compressed_bpp * Pixel clock / (PPC * Bigjoiner Interface bits)
+ *
+ * Since PPC = 2 with bigjoiner
+ * => CDCLK >= compressed_bpp * Pixel clock / 2 * Bigjoiner Interface bits
+ */
+ int bigjoiner_interface_bits = DISPLAY_VER(display) >= 14 ? 36 : 24;
+ int min_cdclk_bj =
+ (fxp_q4_to_int_roundup(crtc_state->dsc.compressed_bpp_x16) *
+ pixel_clock) / (2 * bigjoiner_interface_bits);
+
+ min_cdclk = max(min_cdclk, min_cdclk_bj);
+ }
+
+ return min_cdclk;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.h b/drivers/gpu/drm/i915/display/intel_vdsc.h
index 290b2e9b3482..9e2812f99dd7 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.h
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.h
@@ -31,5 +31,6 @@ void intel_dsc_dp_pps_write(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state);
void intel_vdsc_state_dump(struct drm_printer *p, int indent,
const struct intel_crtc_state *crtc_state);
+int intel_vdsc_min_cdclk(const struct intel_crtc_state *crtc_state);
#endif /* __INTEL_VDSC_H__ */
--
2.45.2
