drm/radeon/kms/pm: add additional asic callbacks
- pm_misc() - handles voltage, pcie lanes, and other non
clock related power mode settings. Currently disabled.
Needs further debugging
- pm_prepare() - disables crtc mem requests right now.
All memory clients need to be disabled when changing
memory clocks. This function can be expanded to include
disabling fb access as well.
- pm_finish() - enable active memory clients.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index b312b72..c3890b7 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -46,6 +46,129 @@
void rs600_gpu_init(struct radeon_device *rdev);
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;
+
+ if ((voltage->type == VOLTAGE_GPIO) && (voltage->gpio.valid)) {
+ if (ps->misc & ATOM_PM_MISCINFO_VOLTAGE_DROP_SUPPORT) {
+ tmp = RREG32(voltage->gpio.reg);
+ if (voltage->active_high)
+ tmp |= voltage->gpio.mask;
+ else
+ tmp &= ~(voltage->gpio.mask);
+ WREG32(voltage->gpio.reg, tmp);
+ if (voltage->delay)
+ udelay(voltage->delay);
+ } else {
+ tmp = RREG32(voltage->gpio.reg);
+ if (voltage->active_high)
+ tmp &= ~voltage->gpio.mask;
+ else
+ tmp |= voltage->gpio.mask;
+ WREG32(voltage->gpio.reg, tmp);
+ if (voltage->delay)
+ udelay(voltage->delay);
+ }
+ }
+
+ dyn_pwrmgt_sclk_length = RREG32_PLL(DYN_PWRMGT_SCLK_LENGTH);
+ dyn_pwrmgt_sclk_length &= ~REDUCED_POWER_SCLK_HILEN(0xf);
+ dyn_pwrmgt_sclk_length &= ~REDUCED_POWER_SCLK_LOLEN(0xf);
+ if (ps->misc & ATOM_PM_MISCINFO_ASIC_REDUCED_SPEED_SCLK_EN) {
+ if (ps->misc & ATOM_PM_MISCINFO_DYNAMIC_CLOCK_DIVIDER_BY_2) {
+ dyn_pwrmgt_sclk_length |= REDUCED_POWER_SCLK_HILEN(2);
+ dyn_pwrmgt_sclk_length |= REDUCED_POWER_SCLK_LOLEN(2);
+ } else if (ps->misc & ATOM_PM_MISCINFO_DYNAMIC_CLOCK_DIVIDER_BY_4) {
+ dyn_pwrmgt_sclk_length |= REDUCED_POWER_SCLK_HILEN(4);
+ dyn_pwrmgt_sclk_length |= REDUCED_POWER_SCLK_LOLEN(4);
+ }
+ } else {
+ dyn_pwrmgt_sclk_length |= REDUCED_POWER_SCLK_HILEN(1);
+ dyn_pwrmgt_sclk_length |= REDUCED_POWER_SCLK_LOLEN(1);
+ }
+ WREG32_PLL(DYN_PWRMGT_SCLK_LENGTH, dyn_pwrmgt_sclk_length);
+
+ dyn_sclk_vol_cntl = RREG32_PLL(DYN_SCLK_VOL_CNTL);
+ if (ps->misc & ATOM_PM_MISCINFO_ASIC_DYNAMIC_VOLTAGE_EN) {
+ dyn_sclk_vol_cntl |= IO_CG_VOLTAGE_DROP;
+ if (voltage->delay) {
+ dyn_sclk_vol_cntl |= VOLTAGE_DROP_SYNC;
+ dyn_sclk_vol_cntl |= VOLTAGE_DELAY_SEL(voltage->delay);
+ } else
+ dyn_sclk_vol_cntl &= ~VOLTAGE_DROP_SYNC;
+ } else
+ dyn_sclk_vol_cntl &= ~IO_CG_VOLTAGE_DROP;
+ WREG32_PLL(DYN_SCLK_VOL_CNTL, dyn_sclk_vol_cntl);
+
+ hdp_dyn_cntl = RREG32_PLL(HDP_DYN_CNTL);
+ if (ps->misc & ATOM_PM_MISCINFO_DYNAMIC_HDP_BLOCK_EN)
+ hdp_dyn_cntl &= ~HDP_FORCEON;
+ else
+ hdp_dyn_cntl |= HDP_FORCEON;
+ WREG32_PLL(HDP_DYN_CNTL, hdp_dyn_cntl);
+
+ 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);
+
+ /* set pcie lanes */
+ if ((rdev->flags & RADEON_IS_PCIE) &&
+ !(rdev->flags & RADEON_IS_IGP) &&
+ rdev->asic->set_pcie_lanes &&
+ (ps->pcie_lanes !=
+ rdev->pm.power_state[rdev->pm.current_power_state_index].pcie_lanes)) {
+ radeon_set_pcie_lanes(rdev,
+ ps->pcie_lanes);
+ DRM_INFO("Setting: p: %d\n", ps->pcie_lanes);
+ }
+#endif
+}
+
+void rs600_pm_prepare(struct radeon_device *rdev)
+{
+ struct drm_device *ddev = rdev->ddev;
+ struct drm_crtc *crtc;
+ struct radeon_crtc *radeon_crtc;
+ u32 tmp;
+
+ /* disable any active CRTCs */
+ list_for_each_entry(crtc, &ddev->mode_config.crtc_list, head) {
+ radeon_crtc = to_radeon_crtc(crtc);
+ if (radeon_crtc->enabled) {
+ tmp = RREG32(AVIVO_D1CRTC_CONTROL + radeon_crtc->crtc_offset);
+ tmp |= AVIVO_CRTC_DISP_READ_REQUEST_DISABLE;
+ WREG32(AVIVO_D1CRTC_CONTROL + radeon_crtc->crtc_offset, tmp);
+ }
+ }
+}
+
+void rs600_pm_finish(struct radeon_device *rdev)
+{
+ struct drm_device *ddev = rdev->ddev;
+ struct drm_crtc *crtc;
+ struct radeon_crtc *radeon_crtc;
+ u32 tmp;
+
+ /* enable any active CRTCs */
+ list_for_each_entry(crtc, &ddev->mode_config.crtc_list, head) {
+ radeon_crtc = to_radeon_crtc(crtc);
+ if (radeon_crtc->enabled) {
+ tmp = RREG32(AVIVO_D1CRTC_CONTROL + radeon_crtc->crtc_offset);
+ tmp &= ~AVIVO_CRTC_DISP_READ_REQUEST_DISABLE;
+ WREG32(AVIVO_D1CRTC_CONTROL + radeon_crtc->crtc_offset, tmp);
+ }
+ }
+}
+
/* hpd for digital panel detect/disconnect */
bool rs600_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)
{