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drm/radeon/kms: enable misc pm power state features on r5xx, rs6xx 

voltage drop, dynamic voltage, dynamic sclk, pcie lane adjust, etc,

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-04-29 16:33:38 -04:00 committed by Dave Airlie
parent 4f3218cbc3
commit 536fcd5124
2 changed files with 12 additions and 4 deletions
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14
drivers/gpu/drm/radeon/rs600.c
View File

@ -48,12 +48,11 @@ int rs600_mc_wait_for_idle(struct radeon_device *rdev);
void rs600_pm_misc(struct radeon_device *rdev)
{
#if 0
int requested_index = rdev->pm.requested_power_state_index;
struct radeon_power_state *ps = &rdev->pm.power_state[requested_index];
struct radeon_voltage *voltage = &ps->clock_info[0].voltage;
u32 tmp, dyn_pwrmgt_sclk_length, dyn_sclk_vol_cntl;
u32 hdp_dyn_cntl, mc_host_dyn_cntl;
u32 hdp_dyn_cntl, /*mc_host_dyn_cntl,*/ dyn_backbias_cntl;
if ((voltage->type == VOLTAGE_GPIO) && (voltage->gpio.valid)) {
if (ps->misc & ATOM_PM_MISCINFO_VOLTAGE_DROP_SUPPORT) {
@ -112,13 +111,21 @@ void rs600_pm_misc(struct radeon_device *rdev)
else
hdp_dyn_cntl |= HDP_FORCEON;
WREG32_PLL(HDP_DYN_CNTL, hdp_dyn_cntl);
#if 0
/* mc_host_dyn seems to cause hangs from time to time */
mc_host_dyn_cntl = RREG32_PLL(MC_HOST_DYN_CNTL);
if (ps->misc & ATOM_PM_MISCINFO_DYNAMIC_MC_HOST_BLOCK_EN)
mc_host_dyn_cntl &= ~MC_HOST_FORCEON;
else
mc_host_dyn_cntl |= MC_HOST_FORCEON;
WREG32_PLL(MC_HOST_DYN_CNTL, mc_host_dyn_cntl);
#endif
dyn_backbias_cntl = RREG32_PLL(DYN_BACKBIAS_CNTL);
if (ps->misc & ATOM_PM_MISCINFO2_DYNAMIC_BACK_BIAS_EN)
dyn_backbias_cntl |= IO_CG_BACKBIAS_EN;
else
dyn_backbias_cntl &= ~IO_CG_BACKBIAS_EN;
WREG32_PLL(DYN_BACKBIAS_CNTL, dyn_backbias_cntl);
/* set pcie lanes */
if ((rdev->flags & RADEON_IS_PCIE) &&
@ -130,7 +137,6 @@ void rs600_pm_misc(struct radeon_device *rdev)
ps->pcie_lanes);
DRM_INFO("Setting: p: %d\n", ps->pcie_lanes);
}
#endif
}
void rs600_pm_prepare(struct radeon_device *rdev)

2
drivers/gpu/drm/radeon/rs600d.h
View File

@ -655,6 +655,8 @@
#define HDP_FORCEON (1 << 0)
#define MC_HOST_DYN_CNTL 0x1e
#define MC_HOST_FORCEON (1 << 0)
#define DYN_BACKBIAS_CNTL 0x29
#define IO_CG_BACKBIAS_EN (1 << 0)
/* mmreg */
#define DOUT_POWER_MANAGEMENT_CNTL 0x7ee0