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drm/radeon/ci: handle gpio controlled dpm features properly 

Certain feature enablement depends on entries in the atom
gpio pin table.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2014-11-07 11:52:12 -05:00
parent 727b3d25be
commit 34fc0b58d9
2 changed files with 53 additions and 0 deletions
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51
drivers/gpu/drm/radeon/ci_dpm.c
View File

@ -5098,6 +5098,8 @@ void ci_dpm_fini(struct radeon_device *rdev)
int ci_dpm_init(struct radeon_device *rdev)
{
int index = GetIndexIntoMasterTable(DATA, ASIC_InternalSS_Info);
SMU7_Discrete_DpmTable *dpm_table;
struct radeon_gpio_rec gpio;
u16 data_offset, size;
u8 frev, crev;
struct ci_power_info *pi;
@ -5231,6 +5233,55 @@ int ci_dpm_init(struct radeon_device *rdev)
pi->uvd_enabled = false;
dpm_table = &pi->smc_state_table;
gpio = radeon_atombios_lookup_gpio(rdev, VDDC_VRHOT_GPIO_PINID);
if (gpio.valid) {
dpm_table->VRHotGpio = gpio.shift;
rdev->pm.dpm.platform_caps |= ATOM_PP_PLATFORM_CAP_REGULATOR_HOT;
} else {
dpm_table->VRHotGpio = CISLANDS_UNUSED_GPIO_PIN;
rdev->pm.dpm.platform_caps &= ~ATOM_PP_PLATFORM_CAP_REGULATOR_HOT;
}
gpio = radeon_atombios_lookup_gpio(rdev, PP_AC_DC_SWITCH_GPIO_PINID);
if (gpio.valid) {
dpm_table->AcDcGpio = gpio.shift;
rdev->pm.dpm.platform_caps |= ATOM_PP_PLATFORM_CAP_HARDWAREDC;
} else {
dpm_table->AcDcGpio = CISLANDS_UNUSED_GPIO_PIN;
rdev->pm.dpm.platform_caps &= ~ATOM_PP_PLATFORM_CAP_HARDWAREDC;
}
gpio = radeon_atombios_lookup_gpio(rdev, VDDC_PCC_GPIO_PINID);
if (gpio.valid) {
u32 tmp = RREG32_SMC(CNB_PWRMGT_CNTL);
switch (gpio.shift) {
case 0:
tmp &= ~GNB_SLOW_MODE_MASK;
tmp |= GNB_SLOW_MODE(1);
break;
case 1:
tmp &= ~GNB_SLOW_MODE_MASK;
tmp |= GNB_SLOW_MODE(2);
break;
case 2:
tmp |= GNB_SLOW;
break;
case 3:
tmp |= FORCE_NB_PS1;
break;
case 4:
tmp |= DPM_ENABLED;
break;
default:
DRM_ERROR("Invalid PCC GPIO!");
break;
}
WREG32_SMC(CNB_PWRMGT_CNTL, tmp);
}
pi->voltage_control = CISLANDS_VOLTAGE_CONTROL_NONE;
pi->vddci_control = CISLANDS_VOLTAGE_CONTROL_NONE;
pi->mvdd_control = CISLANDS_VOLTAGE_CONTROL_NONE;

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

@ -33,6 +33,8 @@
#define CISLANDS_MAX_HARDWARE_POWERLEVELS 2
#define CISLANDS_UNUSED_GPIO_PIN 0x7F
struct ci_pl {
u32 mclk;
u32 sclk;