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drm/radeon/kms/pm: add asic specific callbacks for getting power state (v2)

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This also simplifies the code and enables reclocking with multiple heads
active by tracking whether the power states are single or multi-head
capable.

Eventually, we will want to select a power state based on external
factors (AC/DC state, user selection, etc.).

(v2) Update for evergreen

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2010-04-22 14:03:55 -04:00
committed by Dave Airlie
parent bae6b56273
commit a48b9b4edb
10 changed files with 411 additions and 244 deletions
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11
drivers/gpu/drm/radeon/radeon_combios.c
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@@ -2368,7 +2368,7 @@ void radeon_combios_get_power_modes(struct radeon_device *rdev)
u8 rev, blocks, tmp;
int state_index = 0;
rdev->pm.default_power_state = NULL;
rdev->pm.default_power_state_index = -1;
if (rdev->flags & RADEON_IS_MOBILITY) {
offset = combios_get_table_offset(dev, COMBIOS_POWERPLAY_INFO_TABLE);
@@ -2441,6 +2441,7 @@ void radeon_combios_get_power_modes(struct radeon_device *rdev)
if (rev > 6)
rdev->pm.power_state[state_index].non_clock_info.pcie_lanes =
RBIOS8(offset + 0x5 + 0x10);
rdev->pm.power_state[state_index].flags = RADEON_PM_SINGLE_DISPLAY_ONLY;
state_index++;
} else {
/* XXX figure out some good default low power mode for mobility cards w/out power tables */
@@ -2462,12 +2463,12 @@ default_mode:
rdev->pm.power_state[state_index].non_clock_info.pcie_lanes = radeon_get_pcie_lanes(rdev);
else
rdev->pm.power_state[state_index].non_clock_info.pcie_lanes = 16;
rdev->pm.default_power_state = &rdev->pm.power_state[state_index];
rdev->pm.power_state[state_index].flags = 0;
rdev->pm.default_power_state_index = state_index;
rdev->pm.num_power_states = state_index + 1;
rdev->pm.current_power_state = rdev->pm.default_power_state;
rdev->pm.current_clock_mode =
rdev->pm.default_power_state->default_clock_mode;
rdev->pm.current_power_state_index = rdev->pm.default_power_state_index;
rdev->pm.current_clock_mode_index = 0;
}
void radeon_external_tmds_setup(struct drm_encoder *encoder)