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drm/radeon/dpm/rs780: restructure code

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Needed to properly handle dynamic state adjustment.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-01-16 09:20:28 -05:00
parent 69e0b57a91
commit f5d73a809e
1 changed files with 32 additions and 20 deletions
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52
drivers/gpu/drm/radeon/rs780_dpm.c
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@ -71,10 +71,11 @@ static void rs780_get_pm_mode_parameters(struct radeon_device *rdev)
static void rs780_voltage_scaling_enable(struct radeon_device *rdev, bool enable);
static int rs780_initialize_dpm_power_state(struct radeon_device *rdev)
static int rs780_initialize_dpm_power_state(struct radeon_device *rdev,
struct radeon_ps *boot_ps)
{
struct atom_clock_dividers dividers;
struct igp_ps *default_state = rs780_get_ps(rdev->pm.dpm.boot_ps);
struct igp_ps *default_state = rs780_get_ps(boot_ps);
int i, ret;
ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
@ -104,7 +105,8 @@ static int rs780_initialize_dpm_power_state(struct radeon_device *rdev)
return 0;
}
static int rs780_initialize_dpm_parameters(struct radeon_device *rdev)
static int rs780_initialize_dpm_parameters(struct radeon_device *rdev,
struct radeon_ps *boot_ps)
{
int ret = 0;
int i;
@ -140,7 +142,7 @@ static int rs780_initialize_dpm_parameters(struct radeon_device *rdev)
r600_vid_rt_set_vrt(rdev, R600_VOLTAGERESPONSETIME_DFLT);
r600_vid_rt_set_ssu(rdev, R600_SPLLSTEPUNIT_DFLT);
ret = rs780_initialize_dpm_power_state(rdev);
ret = rs780_initialize_dpm_power_state(rdev, boot_ps);
r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_LOW, 0);
r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_MEDIUM, 0);
@ -401,11 +403,13 @@ static void rs780_force_voltage_to_high(struct radeon_device *rdev)
WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL);
}
static int rs780_set_engine_clock_scaling(struct radeon_device *rdev)
static int rs780_set_engine_clock_scaling(struct radeon_device *rdev,
struct radeon_ps *new_ps,
struct radeon_ps *old_ps)
{
struct atom_clock_dividers min_dividers, max_dividers, current_max_dividers;
struct igp_ps *new_state = rs780_get_ps(rdev->pm.dpm.requested_ps);
struct igp_ps *old_state = rs780_get_ps(rdev->pm.dpm.current_ps);
struct igp_ps *new_state = rs780_get_ps(new_ps);
struct igp_ps *old_state = rs780_get_ps(old_ps);
int ret;
if ((new_state->sclk_high == old_state->sclk_high) &&
@ -451,10 +455,12 @@ static int rs780_set_engine_clock_scaling(struct radeon_device *rdev)
return 0;
}
static void rs780_set_engine_clock_spc(struct radeon_device *rdev)
static void rs780_set_engine_clock_spc(struct radeon_device *rdev,
struct radeon_ps *new_ps,
struct radeon_ps *old_ps)
{
struct igp_ps *new_state = rs780_get_ps(rdev->pm.dpm.requested_ps);
struct igp_ps *old_state = rs780_get_ps(rdev->pm.dpm.current_ps);
struct igp_ps *new_state = rs780_get_ps(new_ps);
struct igp_ps *old_state = rs780_get_ps(old_ps);
struct igp_power_info *pi = rs780_get_pi(rdev);
if ((new_state->sclk_high == old_state->sclk_high) &&
@ -468,10 +474,12 @@ static void rs780_set_engine_clock_spc(struct radeon_device *rdev)
}
static void rs780_activate_engine_clk_scaling(struct radeon_device *rdev)
static void rs780_activate_engine_clk_scaling(struct radeon_device *rdev,
struct radeon_ps *new_ps,
struct radeon_ps *old_ps)
{
struct igp_ps *new_state = rs780_get_ps(rdev->pm.dpm.requested_ps);
struct igp_ps *old_state = rs780_get_ps(rdev->pm.dpm.current_ps);
struct igp_ps *new_state = rs780_get_ps(new_ps);
struct igp_ps *old_state = rs780_get_ps(old_ps);
if ((new_state->sclk_high == old_state->sclk_high) &&
(new_state->sclk_low == old_state->sclk_low))
@ -493,9 +501,10 @@ static u32 rs780_get_voltage_for_vddc_level(struct radeon_device *rdev,
return pi->max_voltage;
}
static void rs780_enable_voltage_scaling(struct radeon_device *rdev)
static void rs780_enable_voltage_scaling(struct radeon_device *rdev,
struct radeon_ps *new_ps)
{
struct igp_ps *new_state = rs780_get_ps(rdev->pm.dpm.requested_ps);
struct igp_ps *new_state = rs780_get_ps(new_ps);
struct igp_power_info *pi = rs780_get_pi(rdev);
enum rs780_vddc_level vddc_high, vddc_low;
@ -536,13 +545,14 @@ static void rs780_enable_voltage_scaling(struct radeon_device *rdev)
int rs780_dpm_enable(struct radeon_device *rdev)
{
struct igp_power_info *pi = rs780_get_pi(rdev);
struct radeon_ps *boot_ps = rdev->pm.dpm.boot_ps;
rs780_get_pm_mode_parameters(rdev);
rs780_disable_vbios_powersaving(rdev);
if (r600_dynamicpm_enabled(rdev))
return -EINVAL;
if (rs780_initialize_dpm_parameters(rdev))
if (rs780_initialize_dpm_parameters(rdev, boot_ps))
return -EINVAL;
rs780_start_dpm(rdev);
@ -591,6 +601,8 @@ void rs780_dpm_disable(struct radeon_device *rdev)
int rs780_dpm_set_power_state(struct radeon_device *rdev)
{
struct igp_power_info *pi = rs780_get_pi(rdev);
struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps;
struct radeon_ps *old_ps = rdev->pm.dpm.current_ps;
rs780_get_pm_mode_parameters(rdev);
@ -599,13 +611,13 @@ int rs780_dpm_set_power_state(struct radeon_device *rdev)
mdelay(5);
}
rs780_set_engine_clock_scaling(rdev);
rs780_set_engine_clock_spc(rdev);
rs780_set_engine_clock_scaling(rdev, new_ps, old_ps);
rs780_set_engine_clock_spc(rdev, new_ps, old_ps);
rs780_activate_engine_clk_scaling(rdev);
rs780_activate_engine_clk_scaling(rdev, new_ps, old_ps);
if (pi->voltage_control)
rs780_enable_voltage_scaling(rdev);
rs780_enable_voltage_scaling(rdev, new_ps);
return 0;
}