Currently compressed max_bpp limitations for small joiner ram, big joiner
etc are intermingled. Seprate these limitations into separate functions.
v2: Use num_joined_pipes in small joiner ram helper and other minor
fixes. (Ville)
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dp.c | 46 +++++++++++++++++++------
1 file changed, 36 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index f2a2541c1091..29f8cb9c4dd0 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -859,25 +859,51 @@ u32 intel_dp_dsc_nearest_valid_bpp(struct drm_i915_private *i915, u32 bpp, u32 p
return bits_per_pixel;
}
+static int bigjoiner_interface_bits(struct intel_display *display)
+{
+ return DISPLAY_VER(display) >= 14 ? 36 : 24;
+}
+
+static u32 bigjoiner_bw_max_bpp(struct intel_display *display, u32 mode_clock)
+{
+ u32 max_bpp;
+ /* With bigjoiner multiple dsc engines are used in parallel so PPC is 2 */
+ int ppc = 2;
+
+ max_bpp = display->cdclk.max_cdclk_freq * ppc * bigjoiner_interface_bits(display) /
+ intel_dp_mode_to_fec_clock(mode_clock);
+
+ return max_bpp;
+}
+
+static u32 small_joiner_ram_max_bpp(struct intel_display *display,
+ u32 mode_hdisplay,
+ int num_joined_pipes)
+{
+ struct drm_i915_private *i915 = to_i915(display->drm);
+ u32 max_bpp;
+
+ /* Small Joiner Check: output bpp <= joiner RAM (bits) / Horiz. width */
+ max_bpp = small_joiner_ram_size_bits(i915) / mode_hdisplay;
+
+ max_bpp *= num_joined_pipes;
+
+ return max_bpp;
+}
+
static
u32 get_max_compressed_bpp_with_joiner(struct drm_i915_private *i915,
u32 mode_clock, u32 mode_hdisplay,
int num_joined_pipes)
{
+ struct intel_display *display = to_intel_display(&i915->drm);
u32 max_bpp_small_joiner_ram;
- /* Small Joiner Check: output bpp <= joiner RAM (bits) / Horiz. width */
- max_bpp_small_joiner_ram = small_joiner_ram_size_bits(i915) / mode_hdisplay;
+ max_bpp_small_joiner_ram = small_joiner_ram_max_bpp(display, mode_hdisplay,
+ num_joined_pipes);
if (num_joined_pipes == 2) {
- int bigjoiner_interface_bits = DISPLAY_VER(i915) >= 14 ? 36 : 24;
- /* With bigjoiner multiple dsc engines are used in parallel so PPC is 2 */
- int ppc = 2;
- u32 max_bpp_bigjoiner =
- i915->display.cdclk.max_cdclk_freq * ppc * bigjoiner_interface_bits /
- intel_dp_mode_to_fec_clock(mode_clock);
-
- max_bpp_small_joiner_ram *= 2;
+ u32 max_bpp_bigjoiner = bigjoiner_bw_max_bpp(display, mode_clock);
return min(max_bpp_small_joiner_ram, max_bpp_bigjoiner);
}
--
2.45.2
