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drm/i915/dp: Modify compressed bpp limitations for ultrajoiner

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Add compressed bpp limitations for ultrajoiner.

v2: Fix the case for 1 pipe. (Ankit)
v3: Refactor existing helper separately and add only ultrajoiner
limitation. (Ville)
v4: Separate out function for ultrajoiner_ram_bits.
v5: Make the helper function more concise. (Ville)

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240930163549.416410-10-ankit.k.nautiyal@intel.com
This commit is contained in:
Ankit Nautiyal 2024-09-30 22:05:45 +05:30
parent 38c311f1c3
commit 94d949103d
1 changed files with 17 additions and 11 deletions
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28
drivers/gpu/drm/i915/display/intel_dp.c
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@ -896,25 +896,31 @@ static u32 small_joiner_ram_max_bpp(struct intel_display *display,
return max_bpp;
}
static int ultrajoiner_ram_bits(void)
{
return 4 * 72 * 512;
}
static u32 ultrajoiner_ram_max_bpp(u32 mode_hdisplay)
{
return ultrajoiner_ram_bits() / mode_hdisplay;
}
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;
u32 max_bpp = small_joiner_ram_max_bpp(display, mode_hdisplay, num_joined_pipes);
max_bpp_small_joiner_ram = small_joiner_ram_max_bpp(display, mode_hdisplay,
num_joined_pipes);
if (num_joined_pipes > 1)
max_bpp = min(max_bpp, bigjoiner_bw_max_bpp(display, mode_clock,
num_joined_pipes));
if (num_joined_pipes == 4)
max_bpp = min(max_bpp, ultrajoiner_ram_max_bpp(mode_hdisplay));
if (num_joined_pipes == 2) {
u32 max_bpp_bigjoiner = bigjoiner_bw_max_bpp(display, mode_clock,
num_joined_pipes);
return min(max_bpp_small_joiner_ram, max_bpp_bigjoiner);
}
return max_bpp_small_joiner_ram;
return max_bpp;
}
u16 intel_dp_dsc_get_max_compressed_bpp(struct drm_i915_private *i915,