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drm/radeon/dpm: move platform caps fetching to a separate function

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It's needed by by both the asic specific functions and the
extended table parser.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2013-08-21 10:02:32 -04:00
committed by Christian König
parent b59b733397
commit 82f79cc54b
13 changed files with 68 additions and 27 deletions
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20
drivers/gpu/drm/radeon/r600_dpm.c
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@@ -834,6 +834,26 @@ static int r600_parse_clk_voltage_dep_table(struct radeon_clock_voltage_dependen
return 0;
}
int r600_get_platform_caps(struct radeon_device *rdev)
{
struct radeon_mode_info *mode_info = &rdev->mode_info;
union power_info *power_info;
int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo);
u16 data_offset;
u8 frev, crev;
if (!atom_parse_data_header(mode_info->atom_context, index, NULL,
&frev, &crev, &data_offset))
return -EINVAL;
power_info = (union power_info *)(mode_info->atom_context->bios + data_offset);
rdev->pm.dpm.platform_caps = le32_to_cpu(power_info->pplib.ulPlatformCaps);
rdev->pm.dpm.backbias_response_time = le16_to_cpu(power_info->pplib.usBackbiasTime);
rdev->pm.dpm.voltage_response_time = le16_to_cpu(power_info->pplib.usVoltageTime);
return 0;
}
/* sizeof(ATOM_PPLIB_EXTENDEDHEADER) */
#define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V2 12
#define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V3 14