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drm/radeon/kms/atom: clean up spread spectrum code

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use a union for the atom args.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-02-01 16:39:11 -05:00 committed by Dave Airlie
parent 093972788f
commit 26b9fc3ab1
1 changed files with 20 additions and 18 deletions
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38
drivers/gpu/drm/radeon/atombios_crtc.c
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@ -349,6 +349,11 @@ static void atombios_crtc_set_timing(struct drm_crtc *crtc,
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
}
union atom_enable_ss {
ENABLE_LVDS_SS_PARAMETERS legacy;
ENABLE_SPREAD_SPECTRUM_ON_PPLL_PS_ALLOCATION v1;
};
static void atombios_set_ss(struct drm_crtc *crtc, int enable)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
@ -358,8 +363,7 @@ static void atombios_set_ss(struct drm_crtc *crtc, int enable)
struct radeon_encoder *radeon_encoder = NULL;
struct radeon_encoder_atom_dig *dig = NULL;
int index = GetIndexIntoMasterTable(COMMAND, EnableSpreadSpectrumOnPPLL);
ENABLE_SPREAD_SPECTRUM_ON_PPLL_PS_ALLOCATION args;
ENABLE_LVDS_SS_PARAMETERS legacy_args;
union atom_enable_ss args;
uint16_t percentage = 0;
uint8_t type = 0, step = 0, delay = 0, range = 0;
@ -386,25 +390,23 @@ static void atombios_set_ss(struct drm_crtc *crtc, int enable)
if (!radeon_encoder)
return;
memset(&args, 0, sizeof(args));
if (ASIC_IS_AVIVO(rdev)) {
memset(&args, 0, sizeof(args));
args.usSpreadSpectrumPercentage = cpu_to_le16(percentage);
args.ucSpreadSpectrumType = type;
args.ucSpreadSpectrumStep = step;
args.ucSpreadSpectrumDelay = delay;
args.ucSpreadSpectrumRange = range;
args.ucPpll = radeon_crtc->crtc_id ? ATOM_PPLL2 : ATOM_PPLL1;
args.ucEnable = enable;
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
args.v1.usSpreadSpectrumPercentage = cpu_to_le16(percentage);
args.v1.ucSpreadSpectrumType = type;
args.v1.ucSpreadSpectrumStep = step;
args.v1.ucSpreadSpectrumDelay = delay;
args.v1.ucSpreadSpectrumRange = range;
args.v1.ucPpll = radeon_crtc->crtc_id ? ATOM_PPLL2 : ATOM_PPLL1;
args.v1.ucEnable = enable;
} else {
memset(&legacy_args, 0, sizeof(legacy_args));
legacy_args.usSpreadSpectrumPercentage = cpu_to_le16(percentage);
legacy_args.ucSpreadSpectrumType = type;
legacy_args.ucSpreadSpectrumStepSize_Delay = (step & 3) << 2;
legacy_args.ucSpreadSpectrumStepSize_Delay |= (delay & 7) << 4;
legacy_args.ucEnable = enable;
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&legacy_args);
args.legacy.usSpreadSpectrumPercentage = cpu_to_le16(percentage);
args.legacy.ucSpreadSpectrumType = type;
args.legacy.ucSpreadSpectrumStepSize_Delay = (step & 3) << 2;
args.legacy.ucSpreadSpectrumStepSize_Delay |= (delay & 7) << 4;
args.legacy.ucEnable = enable;
}
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
}
union adjust_pixel_clock {