UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/i915/tgl: Add memory type decoding for bandwidth checking 

The memory type values have changed in TGL, so we need to translate them
differently than ICL. While we're moving it, fix up the ICL translation
for LPDDR4.

BSpec: 53998

v2: Fix up ICL LPDDR4 entry (Ville); Drop unused values from TGL (Ville)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: James Ausmus <james.ausmus@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190924222829.13142-1-james.ausmus@intel.com
This commit is contained in:
James Ausmus 2019-09-24 15:28:29 -07:00 committed by Lucas De Marchi
parent 6677c3b167
commit c1f2b8124b
1 changed files with 39 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
drivers/gpu/drm/i915/display/intel_bw.c
View File

@ -35,22 +35,45 @@ static int icl_pcode_read_mem_global_info(struct drm_i915_private *dev_priv,
if (ret)
return ret;
switch (val & 0xf) {
case 0:
qi->dram_type = INTEL_DRAM_DDR4;
break;
case 1:
qi->dram_type = INTEL_DRAM_DDR3;
break;
case 2:
qi->dram_type = INTEL_DRAM_LPDDR3;
break;
case 3:
qi->dram_type = INTEL_DRAM_LPDDR3;
break;
default:
MISSING_CASE(val & 0xf);
break;
if (IS_GEN(dev_priv, 12)) {
switch (val & 0xf) {
case 0:
qi->dram_type = INTEL_DRAM_DDR4;
break;
case 3:
qi->dram_type = INTEL_DRAM_LPDDR4;
break;
case 4:
qi->dram_type = INTEL_DRAM_DDR3;
break;
case 5:
qi->dram_type = INTEL_DRAM_LPDDR3;
break;
default:
MISSING_CASE(val & 0xf);
break;
}
} else if (IS_GEN(dev_priv, 11)) {
switch (val & 0xf) {
case 0:
qi->dram_type = INTEL_DRAM_DDR4;
break;
case 1:
qi->dram_type = INTEL_DRAM_DDR3;
break;
case 2:
qi->dram_type = INTEL_DRAM_LPDDR3;
break;
case 3:
qi->dram_type = INTEL_DRAM_LPDDR4;
break;
default:
MISSING_CASE(val & 0xf);
break;
}
} else {
MISSING_CASE(INTEL_GEN(dev_priv));
qi->dram_type = INTEL_DRAM_LPDDR3; /* Conservative default */
}
qi->num_channels = (val & 0xf0) >> 4;