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linux-stable/drivers/gpu/drm/radeon/rs780_dpm.c
Michele Curti 01467a9b5e drm/radeon: reduce sparse false positive warnings 
include radeon_asic.h header file in the various xxx_dpm.c files
to reduce sparse false positive warnings. Not so great patch
in itself, but reducing warning count from 391 to 258 may help
to see real problems..

Signed-off-by: Michele Curti <michele.curti@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-10-16 18:34:10 -04:00

1054 lines
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/*
* Copyright 2011 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Alex Deucher
*/
#include "drmP.h"
#include "radeon.h"
#include "radeon_asic.h"
#include "rs780d.h"
#include "r600_dpm.h"
#include "rs780_dpm.h"
#include "atom.h"
#include <linux/seq_file.h>
static struct igp_ps *rs780_get_ps(struct radeon_ps *rps)
{
struct igp_ps *ps = rps->ps_priv;
return ps;
}
static struct igp_power_info *rs780_get_pi(struct radeon_device *rdev)
{
struct igp_power_info *pi = rdev->pm.dpm.priv;
return pi;
}
static void rs780_get_pm_mode_parameters(struct radeon_device *rdev)
{
struct igp_power_info *pi = rs780_get_pi(rdev);
struct radeon_mode_info *minfo = &rdev->mode_info;
struct drm_crtc *crtc;
struct radeon_crtc *radeon_crtc;
int i;
/* defaults */
pi->crtc_id = 0;
pi->refresh_rate = 60;
for (i = 0; i < rdev->num_crtc; i++) {
crtc = (struct drm_crtc *)minfo->crtcs[i];
if (crtc && crtc->enabled) {
radeon_crtc = to_radeon_crtc(crtc);
pi->crtc_id = radeon_crtc->crtc_id;
if (crtc->mode.htotal && crtc->mode.vtotal)
pi->refresh_rate = drm_mode_vrefresh(&crtc->mode);
break;
}
}
}
static void rs780_voltage_scaling_enable(struct radeon_device *rdev, bool enable);
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(boot_ps);
int i, ret;
ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
default_state->sclk_low, false, &dividers);
if (ret)
return ret;
r600_engine_clock_entry_set_reference_divider(rdev, 0, dividers.ref_div);
r600_engine_clock_entry_set_feedback_divider(rdev, 0, dividers.fb_div);
r600_engine_clock_entry_set_post_divider(rdev, 0, dividers.post_div);
if (dividers.enable_post_div)
r600_engine_clock_entry_enable_post_divider(rdev, 0, true);
else
r600_engine_clock_entry_enable_post_divider(rdev, 0, false);
r600_engine_clock_entry_set_step_time(rdev, 0, R600_SST_DFLT);
r600_engine_clock_entry_enable_pulse_skipping(rdev, 0, false);
r600_engine_clock_entry_enable(rdev, 0, true);
for (i = 1; i < R600_PM_NUMBER_OF_SCLKS; i++)
r600_engine_clock_entry_enable(rdev, i, false);
r600_enable_mclk_control(rdev, false);
r600_voltage_control_enable_pins(rdev, 0);
return 0;
}
static int rs780_initialize_dpm_parameters(struct radeon_device *rdev,
struct radeon_ps *boot_ps)
{
int ret = 0;
int i;
r600_set_bsp(rdev, R600_BSU_DFLT, R600_BSP_DFLT);
r600_set_at(rdev, 0, 0, 0, 0);
r600_set_git(rdev, R600_GICST_DFLT);
for (i = 0; i < R600_PM_NUMBER_OF_TC; i++)
r600_set_tc(rdev, i, 0, 0);
r600_select_td(rdev, R600_TD_DFLT);
r600_set_vrc(rdev, 0);
r600_set_tpu(rdev, R600_TPU_DFLT);
r600_set_tpc(rdev, R600_TPC_DFLT);
r600_set_sstu(rdev, R600_SSTU_DFLT);
r600_set_sst(rdev, R600_SST_DFLT);
r600_set_fctu(rdev, R600_FCTU_DFLT);
r600_set_fct(rdev, R600_FCT_DFLT);
r600_set_vddc3d_oorsu(rdev, R600_VDDC3DOORSU_DFLT);
r600_set_vddc3d_oorphc(rdev, R600_VDDC3DOORPHC_DFLT);
r600_set_vddc3d_oorsdc(rdev, R600_VDDC3DOORSDC_DFLT);
r600_set_ctxcgtt3d_rphc(rdev, R600_CTXCGTT3DRPHC_DFLT);
r600_set_ctxcgtt3d_rsdc(rdev, R600_CTXCGTT3DRSDC_DFLT);
r600_vid_rt_set_vru(rdev, R600_VRU_DFLT);
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, 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);
r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_HIGH, 0);
r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_LOW, 0);
r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 0);
r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_HIGH, 0);
r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_LOW, 0);
r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 0);
r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_HIGH, 0);
r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_LOW, R600_DISPLAY_WATERMARK_HIGH);
r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_MEDIUM, R600_DISPLAY_WATERMARK_HIGH);
r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_HIGH, R600_DISPLAY_WATERMARK_HIGH);
r600_power_level_enable(rdev, R600_POWER_LEVEL_CTXSW, false);
r600_power_level_enable(rdev, R600_POWER_LEVEL_HIGH, false);
r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, false);
r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, true);
r600_power_level_set_enter_index(rdev, R600_POWER_LEVEL_LOW);
r600_set_vrc(rdev, RS780_CGFTV_DFLT);
return ret;
}
static void rs780_start_dpm(struct radeon_device *rdev)
{
r600_enable_sclk_control(rdev, false);
r600_enable_mclk_control(rdev, false);
r600_dynamicpm_enable(rdev, true);
radeon_wait_for_vblank(rdev, 0);
radeon_wait_for_vblank(rdev, 1);
r600_enable_spll_bypass(rdev, true);
r600_wait_for_spll_change(rdev);
r600_enable_spll_bypass(rdev, false);
r600_wait_for_spll_change(rdev);
r600_enable_spll_bypass(rdev, true);
r600_wait_for_spll_change(rdev);
r600_enable_spll_bypass(rdev, false);
r600_wait_for_spll_change(rdev);
r600_enable_sclk_control(rdev, true);
}
static void rs780_preset_ranges_slow_clk_fbdiv_en(struct radeon_device *rdev)
{
WREG32_P(FVTHROT_SLOW_CLK_FEEDBACK_DIV_REG1, RANGE_SLOW_CLK_FEEDBACK_DIV_EN,
~RANGE_SLOW_CLK_FEEDBACK_DIV_EN);
WREG32_P(FVTHROT_SLOW_CLK_FEEDBACK_DIV_REG1,
RANGE0_SLOW_CLK_FEEDBACK_DIV(RS780_SLOWCLKFEEDBACKDIV_DFLT),
~RANGE0_SLOW_CLK_FEEDBACK_DIV_MASK);
}
static void rs780_preset_starting_fbdiv(struct radeon_device *rdev)
{
u32 fbdiv = (RREG32(CG_SPLL_FUNC_CNTL) & SPLL_FB_DIV_MASK) >> SPLL_FB_DIV_SHIFT;
WREG32_P(FVTHROT_FBDIV_REG1, STARTING_FEEDBACK_DIV(fbdiv),
~STARTING_FEEDBACK_DIV_MASK);
WREG32_P(FVTHROT_FBDIV_REG2, FORCED_FEEDBACK_DIV(fbdiv),
~FORCED_FEEDBACK_DIV_MASK);
WREG32_P(FVTHROT_FBDIV_REG1, FORCE_FEEDBACK_DIV, ~FORCE_FEEDBACK_DIV);
}
static void rs780_voltage_scaling_init(struct radeon_device *rdev)
{
struct igp_power_info *pi = rs780_get_pi(rdev);
struct drm_device *dev = rdev->ddev;
u32 fv_throt_pwm_fb_div_range[3];
u32 fv_throt_pwm_range[4];
if (dev->pdev->device == 0x9614) {
fv_throt_pwm_fb_div_range[0] = RS780D_FVTHROTPWMFBDIVRANGEREG0_DFLT;
fv_throt_pwm_fb_div_range[1] = RS780D_FVTHROTPWMFBDIVRANGEREG1_DFLT;
fv_throt_pwm_fb_div_range[2] = RS780D_FVTHROTPWMFBDIVRANGEREG2_DFLT;
} else if ((dev->pdev->device == 0x9714) ||
(dev->pdev->device == 0x9715)) {
fv_throt_pwm_fb_div_range[0] = RS880D_FVTHROTPWMFBDIVRANGEREG0_DFLT;
fv_throt_pwm_fb_div_range[1] = RS880D_FVTHROTPWMFBDIVRANGEREG1_DFLT;
fv_throt_pwm_fb_div_range[2] = RS880D_FVTHROTPWMFBDIVRANGEREG2_DFLT;
} else {
fv_throt_pwm_fb_div_range[0] = RS780_FVTHROTPWMFBDIVRANGEREG0_DFLT;
fv_throt_pwm_fb_div_range[1] = RS780_FVTHROTPWMFBDIVRANGEREG1_DFLT;
fv_throt_pwm_fb_div_range[2] = RS780_FVTHROTPWMFBDIVRANGEREG2_DFLT;
}
if (pi->pwm_voltage_control) {
fv_throt_pwm_range[0] = pi->min_voltage;
fv_throt_pwm_range[1] = pi->min_voltage;
fv_throt_pwm_range[2] = pi->max_voltage;
fv_throt_pwm_range[3] = pi->max_voltage;
} else {
fv_throt_pwm_range[0] = pi->invert_pwm_required ?
RS780_FVTHROTPWMRANGE3_GPIO_DFLT : RS780_FVTHROTPWMRANGE0_GPIO_DFLT;
fv_throt_pwm_range[1] = pi->invert_pwm_required ?
RS780_FVTHROTPWMRANGE2_GPIO_DFLT : RS780_FVTHROTPWMRANGE1_GPIO_DFLT;
fv_throt_pwm_range[2] = pi->invert_pwm_required ?
RS780_FVTHROTPWMRANGE1_GPIO_DFLT : RS780_FVTHROTPWMRANGE2_GPIO_DFLT;
fv_throt_pwm_range[3] = pi->invert_pwm_required ?
RS780_FVTHROTPWMRANGE0_GPIO_DFLT : RS780_FVTHROTPWMRANGE3_GPIO_DFLT;
}
WREG32_P(FVTHROT_PWM_CTRL_REG0,
STARTING_PWM_HIGHTIME(pi->max_voltage),
~STARTING_PWM_HIGHTIME_MASK);
WREG32_P(FVTHROT_PWM_CTRL_REG0,
NUMBER_OF_CYCLES_IN_PERIOD(pi->num_of_cycles_in_period),
~NUMBER_OF_CYCLES_IN_PERIOD_MASK);
WREG32_P(FVTHROT_PWM_CTRL_REG0, FORCE_STARTING_PWM_HIGHTIME,
~FORCE_STARTING_PWM_HIGHTIME);
if (pi->invert_pwm_required)
WREG32_P(FVTHROT_PWM_CTRL_REG0, INVERT_PWM_WAVEFORM, ~INVERT_PWM_WAVEFORM);
else
WREG32_P(FVTHROT_PWM_CTRL_REG0, 0, ~INVERT_PWM_WAVEFORM);
rs780_voltage_scaling_enable(rdev, true);
WREG32(FVTHROT_PWM_CTRL_REG1,
(MIN_PWM_HIGHTIME(pi->min_voltage) |
MAX_PWM_HIGHTIME(pi->max_voltage)));
WREG32(FVTHROT_PWM_US_REG0, RS780_FVTHROTPWMUSREG0_DFLT);
WREG32(FVTHROT_PWM_US_REG1, RS780_FVTHROTPWMUSREG1_DFLT);
WREG32(FVTHROT_PWM_DS_REG0, RS780_FVTHROTPWMDSREG0_DFLT);
WREG32(FVTHROT_PWM_DS_REG1, RS780_FVTHROTPWMDSREG1_DFLT);
WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1,
RANGE0_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[0]),
~RANGE0_PWM_FEEDBACK_DIV_MASK);
WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG2,
(RANGE1_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[1]) |
RANGE2_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[2])));
WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG3,
(RANGE0_PWM(fv_throt_pwm_range[1]) |
RANGE1_PWM(fv_throt_pwm_range[2])));
WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG4,
(RANGE2_PWM(fv_throt_pwm_range[1]) |
RANGE3_PWM(fv_throt_pwm_range[2])));
}
static void rs780_clk_scaling_enable(struct radeon_device *rdev, bool enable)
{
if (enable)
WREG32_P(FVTHROT_CNTRL_REG, ENABLE_FV_THROT | ENABLE_FV_UPDATE,
~(ENABLE_FV_THROT | ENABLE_FV_UPDATE));
else
WREG32_P(FVTHROT_CNTRL_REG, 0,
~(ENABLE_FV_THROT | ENABLE_FV_UPDATE));
}
static void rs780_voltage_scaling_enable(struct radeon_device *rdev, bool enable)
{
if (enable)
WREG32_P(FVTHROT_CNTRL_REG, ENABLE_FV_THROT_IO, ~ENABLE_FV_THROT_IO);
else
WREG32_P(FVTHROT_CNTRL_REG, 0, ~ENABLE_FV_THROT_IO);
}
static void rs780_set_engine_clock_wfc(struct radeon_device *rdev)
{
WREG32(FVTHROT_UTC0, RS780_FVTHROTUTC0_DFLT);
WREG32(FVTHROT_UTC1, RS780_FVTHROTUTC1_DFLT);
WREG32(FVTHROT_UTC2, RS780_FVTHROTUTC2_DFLT);
WREG32(FVTHROT_UTC3, RS780_FVTHROTUTC3_DFLT);
WREG32(FVTHROT_UTC4, RS780_FVTHROTUTC4_DFLT);
WREG32(FVTHROT_DTC0, RS780_FVTHROTDTC0_DFLT);
WREG32(FVTHROT_DTC1, RS780_FVTHROTDTC1_DFLT);
WREG32(FVTHROT_DTC2, RS780_FVTHROTDTC2_DFLT);
WREG32(FVTHROT_DTC3, RS780_FVTHROTDTC3_DFLT);
WREG32(FVTHROT_DTC4, RS780_FVTHROTDTC4_DFLT);
}
static void rs780_set_engine_clock_sc(struct radeon_device *rdev)
{
WREG32_P(FVTHROT_FBDIV_REG2,
FB_DIV_TIMER_VAL(RS780_FBDIVTIMERVAL_DFLT),
~FB_DIV_TIMER_VAL_MASK);
WREG32_P(FVTHROT_CNTRL_REG,
REFRESH_RATE_DIVISOR(0) | MINIMUM_CIP(0xf),
~(REFRESH_RATE_DIVISOR_MASK | MINIMUM_CIP_MASK));
}
static void rs780_set_engine_clock_tdc(struct radeon_device *rdev)
{
WREG32_P(FVTHROT_CNTRL_REG, 0, ~(FORCE_TREND_SEL | TREND_SEL_MODE));
}
static void rs780_set_engine_clock_ssc(struct radeon_device *rdev)
{
WREG32(FVTHROT_FB_US_REG0, RS780_FVTHROTFBUSREG0_DFLT);
WREG32(FVTHROT_FB_US_REG1, RS780_FVTHROTFBUSREG1_DFLT);
WREG32(FVTHROT_FB_DS_REG0, RS780_FVTHROTFBDSREG0_DFLT);
WREG32(FVTHROT_FB_DS_REG1, RS780_FVTHROTFBDSREG1_DFLT);
WREG32_P(FVTHROT_FBDIV_REG1, MAX_FEEDBACK_STEP(1), ~MAX_FEEDBACK_STEP_MASK);
}
static void rs780_program_at(struct radeon_device *rdev)
{
struct igp_power_info *pi = rs780_get_pi(rdev);
WREG32(FVTHROT_TARGET_REG, 30000000 / pi->refresh_rate);
WREG32(FVTHROT_CB1, 1000000 * 5 / pi->refresh_rate);
WREG32(FVTHROT_CB2, 1000000 * 10 / pi->refresh_rate);
WREG32(FVTHROT_CB3, 1000000 * 30 / pi->refresh_rate);
WREG32(FVTHROT_CB4, 1000000 * 50 / pi->refresh_rate);
}
static void rs780_disable_vbios_powersaving(struct radeon_device *rdev)
{
WREG32_P(CG_INTGFX_MISC, 0, ~0xFFF00000);
}
static void rs780_force_voltage(struct radeon_device *rdev, u16 voltage)
{
struct igp_ps *current_state = rs780_get_ps(rdev->pm.dpm.current_ps);
if ((current_state->max_voltage == RS780_VDDC_LEVEL_HIGH) &&
(current_state->min_voltage == RS780_VDDC_LEVEL_HIGH))
return;
WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL);
udelay(1);
WREG32_P(FVTHROT_PWM_CTRL_REG0,
STARTING_PWM_HIGHTIME(voltage),
~STARTING_PWM_HIGHTIME_MASK);
WREG32_P(FVTHROT_PWM_CTRL_REG0,
FORCE_STARTING_PWM_HIGHTIME, ~FORCE_STARTING_PWM_HIGHTIME);
WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1, 0,
~RANGE_PWM_FEEDBACK_DIV_EN);
udelay(1);
WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL);
}
static void rs780_force_fbdiv(struct radeon_device *rdev, u32 fb_div)
{
struct igp_ps *current_state = rs780_get_ps(rdev->pm.dpm.current_ps);
if (current_state->sclk_low == current_state->sclk_high)
return;
WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL);
WREG32_P(FVTHROT_FBDIV_REG2, FORCED_FEEDBACK_DIV(fb_div),
~FORCED_FEEDBACK_DIV_MASK);
WREG32_P(FVTHROT_FBDIV_REG1, STARTING_FEEDBACK_DIV(fb_div),
~STARTING_FEEDBACK_DIV_MASK);
WREG32_P(FVTHROT_FBDIV_REG1, FORCE_FEEDBACK_DIV, ~FORCE_FEEDBACK_DIV);
udelay(100);
WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL);
}
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(new_ps);
struct igp_ps *old_state = rs780_get_ps(old_ps);
int ret;
if ((new_state->sclk_high == old_state->sclk_high) &&
(new_state->sclk_low == old_state->sclk_low))
return 0;
ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
new_state->sclk_low, false, &min_dividers);
if (ret)
return ret;
ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
new_state->sclk_high, false, &max_dividers);
if (ret)
return ret;
ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
old_state->sclk_high, false, &current_max_dividers);
if (ret)
return ret;
if ((min_dividers.ref_div != max_dividers.ref_div) ||
(min_dividers.post_div != max_dividers.post_div) ||
(max_dividers.ref_div != current_max_dividers.ref_div) ||
(max_dividers.post_div != current_max_dividers.post_div))
return -EINVAL;
rs780_force_fbdiv(rdev, max_dividers.fb_div);
if (max_dividers.fb_div > min_dividers.fb_div) {
WREG32_P(FVTHROT_FBDIV_REG0,
MIN_FEEDBACK_DIV(min_dividers.fb_div) |
MAX_FEEDBACK_DIV(max_dividers.fb_div),
~(MIN_FEEDBACK_DIV_MASK | MAX_FEEDBACK_DIV_MASK));
WREG32_P(FVTHROT_FBDIV_REG1, 0, ~FORCE_FEEDBACK_DIV);
}
return 0;
}
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(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) &&
(new_state->sclk_low == old_state->sclk_low))
return;
if (pi->crtc_id == 0)
WREG32_P(CG_INTGFX_MISC, 0, ~FVTHROT_VBLANK_SEL);
else
WREG32_P(CG_INTGFX_MISC, FVTHROT_VBLANK_SEL, ~FVTHROT_VBLANK_SEL);
}
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(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))
return;
if (new_state->sclk_high == new_state->sclk_low)
return;
rs780_clk_scaling_enable(rdev, true);
}
static u32 rs780_get_voltage_for_vddc_level(struct radeon_device *rdev,
enum rs780_vddc_level vddc)
{
struct igp_power_info *pi = rs780_get_pi(rdev);
if (vddc == RS780_VDDC_LEVEL_HIGH)
return pi->max_voltage;
else if (vddc == RS780_VDDC_LEVEL_LOW)
return pi->min_voltage;
else
return pi->max_voltage;
}
static void rs780_enable_voltage_scaling(struct radeon_device *rdev,
struct radeon_ps *new_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;
udelay(100);
if ((new_state->max_voltage == RS780_VDDC_LEVEL_HIGH) &&
(new_state->min_voltage == RS780_VDDC_LEVEL_HIGH))
return;
vddc_high = rs780_get_voltage_for_vddc_level(rdev,
new_state->max_voltage);
vddc_low = rs780_get_voltage_for_vddc_level(rdev,
new_state->min_voltage);
WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL);
udelay(1);
if (vddc_high > vddc_low) {
WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1,
RANGE_PWM_FEEDBACK_DIV_EN, ~RANGE_PWM_FEEDBACK_DIV_EN);
WREG32_P(FVTHROT_PWM_CTRL_REG0, 0, ~FORCE_STARTING_PWM_HIGHTIME);
} else if (vddc_high == vddc_low) {
if (pi->max_voltage != vddc_high) {
WREG32_P(FVTHROT_PWM_CTRL_REG0,
STARTING_PWM_HIGHTIME(vddc_high),
~STARTING_PWM_HIGHTIME_MASK);
WREG32_P(FVTHROT_PWM_CTRL_REG0,
FORCE_STARTING_PWM_HIGHTIME,
~FORCE_STARTING_PWM_HIGHTIME);
}
}
WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL);
}
static void rs780_set_uvd_clock_before_set_eng_clock(struct radeon_device *rdev,
struct radeon_ps *new_ps,
struct radeon_ps *old_ps)
{
struct igp_ps *new_state = rs780_get_ps(new_ps);
struct igp_ps *current_state = rs780_get_ps(old_ps);
if ((new_ps->vclk == old_ps->vclk) &&
(new_ps->dclk == old_ps->dclk))
return;
if (new_state->sclk_high >= current_state->sclk_high)
return;
radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk);
}
static void rs780_set_uvd_clock_after_set_eng_clock(struct radeon_device *rdev,
struct radeon_ps *new_ps,
struct radeon_ps *old_ps)
{
struct igp_ps *new_state = rs780_get_ps(new_ps);
struct igp_ps *current_state = rs780_get_ps(old_ps);
if ((new_ps->vclk == old_ps->vclk) &&
(new_ps->dclk == old_ps->dclk))
return;
if (new_state->sclk_high < current_state->sclk_high)
return;
radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk);
}
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;
int ret;
rs780_get_pm_mode_parameters(rdev);
rs780_disable_vbios_powersaving(rdev);
if (r600_dynamicpm_enabled(rdev))
return -EINVAL;
ret = rs780_initialize_dpm_parameters(rdev, boot_ps);
if (ret)
return ret;
rs780_start_dpm(rdev);
rs780_preset_ranges_slow_clk_fbdiv_en(rdev);
rs780_preset_starting_fbdiv(rdev);
if (pi->voltage_control)
rs780_voltage_scaling_init(rdev);
rs780_clk_scaling_enable(rdev, true);
rs780_set_engine_clock_sc(rdev);
rs780_set_engine_clock_wfc(rdev);
rs780_program_at(rdev);
rs780_set_engine_clock_tdc(rdev);
rs780_set_engine_clock_ssc(rdev);
if (pi->gfx_clock_gating)
r600_gfx_clockgating_enable(rdev, true);
return 0;
}
void rs780_dpm_disable(struct radeon_device *rdev)
{
struct igp_power_info *pi = rs780_get_pi(rdev);
r600_dynamicpm_enable(rdev, false);
rs780_clk_scaling_enable(rdev, false);
rs780_voltage_scaling_enable(rdev, false);
if (pi->gfx_clock_gating)
r600_gfx_clockgating_enable(rdev, false);
if (rdev->irq.installed &&
(rdev->pm.int_thermal_type == THERMAL_TYPE_RV6XX)) {
rdev->irq.dpm_thermal = false;
radeon_irq_set(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;
int ret;
rs780_get_pm_mode_parameters(rdev);
rs780_set_uvd_clock_before_set_eng_clock(rdev, new_ps, old_ps);
if (pi->voltage_control) {
rs780_force_voltage(rdev, pi->max_voltage);
mdelay(5);
}
ret = rs780_set_engine_clock_scaling(rdev, new_ps, old_ps);
if (ret)
return ret;
rs780_set_engine_clock_spc(rdev, new_ps, old_ps);
rs780_activate_engine_clk_scaling(rdev, new_ps, old_ps);
if (pi->voltage_control)
rs780_enable_voltage_scaling(rdev, new_ps);
rs780_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps);
return 0;
}
void rs780_dpm_setup_asic(struct radeon_device *rdev)
{
}
void rs780_dpm_display_configuration_changed(struct radeon_device *rdev)
{
rs780_get_pm_mode_parameters(rdev);
rs780_program_at(rdev);
}
union igp_info {
struct _ATOM_INTEGRATED_SYSTEM_INFO info;
struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_2;
};
union power_info {
struct _ATOM_POWERPLAY_INFO info;
struct _ATOM_POWERPLAY_INFO_V2 info_2;
struct _ATOM_POWERPLAY_INFO_V3 info_3;
struct _ATOM_PPLIB_POWERPLAYTABLE pplib;
struct _ATOM_PPLIB_POWERPLAYTABLE2 pplib2;
struct _ATOM_PPLIB_POWERPLAYTABLE3 pplib3;
};
union pplib_clock_info {
struct _ATOM_PPLIB_R600_CLOCK_INFO r600;
struct _ATOM_PPLIB_RS780_CLOCK_INFO rs780;
struct _ATOM_PPLIB_EVERGREEN_CLOCK_INFO evergreen;
struct _ATOM_PPLIB_SUMO_CLOCK_INFO sumo;
};
union pplib_power_state {
struct _ATOM_PPLIB_STATE v1;
struct _ATOM_PPLIB_STATE_V2 v2;
};
static void rs780_parse_pplib_non_clock_info(struct radeon_device *rdev,
struct radeon_ps *rps,
struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info,
u8 table_rev)
{
rps->caps = le32_to_cpu(non_clock_info->ulCapsAndSettings);
rps->class = le16_to_cpu(non_clock_info->usClassification);
rps->class2 = le16_to_cpu(non_clock_info->usClassification2);
if (ATOM_PPLIB_NONCLOCKINFO_VER1 < table_rev) {
rps->vclk = le32_to_cpu(non_clock_info->ulVCLK);
rps->dclk = le32_to_cpu(non_clock_info->ulDCLK);
} else {
rps->vclk = 0;
rps->dclk = 0;
}
if (r600_is_uvd_state(rps->class, rps->class2)) {
if ((rps->vclk == 0) || (rps->dclk == 0)) {
rps->vclk = RS780_DEFAULT_VCLK_FREQ;
rps->dclk = RS780_DEFAULT_DCLK_FREQ;
}
}
if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT)
rdev->pm.dpm.boot_ps = rps;
if (rps->class & ATOM_PPLIB_CLASSIFICATION_UVDSTATE)
rdev->pm.dpm.uvd_ps = rps;
}
static void rs780_parse_pplib_clock_info(struct radeon_device *rdev,
struct radeon_ps *rps,
union pplib_clock_info *clock_info)
{
struct igp_ps *ps = rs780_get_ps(rps);
u32 sclk;
sclk = le16_to_cpu(clock_info->rs780.usLowEngineClockLow);
sclk |= clock_info->rs780.ucLowEngineClockHigh << 16;
ps->sclk_low = sclk;
sclk = le16_to_cpu(clock_info->rs780.usHighEngineClockLow);
sclk |= clock_info->rs780.ucHighEngineClockHigh << 16;
ps->sclk_high = sclk;
switch (le16_to_cpu(clock_info->rs780.usVDDC)) {
case ATOM_PPLIB_RS780_VOLTAGE_NONE:
default:
ps->min_voltage = RS780_VDDC_LEVEL_UNKNOWN;
ps->max_voltage = RS780_VDDC_LEVEL_UNKNOWN;
break;
case ATOM_PPLIB_RS780_VOLTAGE_LOW:
ps->min_voltage = RS780_VDDC_LEVEL_LOW;
ps->max_voltage = RS780_VDDC_LEVEL_LOW;
break;
case ATOM_PPLIB_RS780_VOLTAGE_HIGH:
ps->min_voltage = RS780_VDDC_LEVEL_HIGH;
ps->max_voltage = RS780_VDDC_LEVEL_HIGH;
break;
case ATOM_PPLIB_RS780_VOLTAGE_VARIABLE:
ps->min_voltage = RS780_VDDC_LEVEL_LOW;
ps->max_voltage = RS780_VDDC_LEVEL_HIGH;
break;
}
ps->flags = le32_to_cpu(clock_info->rs780.ulFlags);
if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT) {
ps->sclk_low = rdev->clock.default_sclk;
ps->sclk_high = rdev->clock.default_sclk;
ps->min_voltage = RS780_VDDC_LEVEL_HIGH;
ps->max_voltage = RS780_VDDC_LEVEL_HIGH;
}
}
static int rs780_parse_power_table(struct radeon_device *rdev)
{
struct radeon_mode_info *mode_info = &rdev->mode_info;
struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info;
union pplib_power_state *power_state;
int i;
union pplib_clock_info *clock_info;
union power_info *power_info;
int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo);
u16 data_offset;
u8 frev, crev;
struct igp_ps *ps;
if (!atom_parse_data_header(mode_info->atom_context, index, NULL,
&frev, &crev, &data_offset))
return -EINVAL;
power_info = (union power_info *)(mode_info->atom_context->bios + data_offset);
rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) *
power_info->pplib.ucNumStates, GFP_KERNEL);
if (!rdev->pm.dpm.ps)
return -ENOMEM;
for (i = 0; i < power_info->pplib.ucNumStates; i++) {
power_state = (union pplib_power_state *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib.usStateArrayOffset) +
i * power_info->pplib.ucStateEntrySize);
non_clock_info = (struct _ATOM_PPLIB_NONCLOCK_INFO *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset) +
(power_state->v1.ucNonClockStateIndex *
power_info->pplib.ucNonClockSize));
if (power_info->pplib.ucStateEntrySize - 1) {
clock_info = (union pplib_clock_info *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib.usClockInfoArrayOffset) +
(power_state->v1.ucClockStateIndices[0] *
power_info->pplib.ucClockInfoSize));
ps = kzalloc(sizeof(struct igp_ps), GFP_KERNEL);
if (ps == NULL) {
kfree(rdev->pm.dpm.ps);
return -ENOMEM;
}
rdev->pm.dpm.ps[i].ps_priv = ps;
rs780_parse_pplib_non_clock_info(rdev, &rdev->pm.dpm.ps[i],
non_clock_info,
power_info->pplib.ucNonClockSize);
rs780_parse_pplib_clock_info(rdev,
&rdev->pm.dpm.ps[i],
clock_info);
}
}
rdev->pm.dpm.num_ps = power_info->pplib.ucNumStates;
return 0;
}
int rs780_dpm_init(struct radeon_device *rdev)
{
struct igp_power_info *pi;
int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo);
union igp_info *info;
u16 data_offset;
u8 frev, crev;
int ret;
pi = kzalloc(sizeof(struct igp_power_info), GFP_KERNEL);
if (pi == NULL)
return -ENOMEM;
rdev->pm.dpm.priv = pi;
ret = r600_get_platform_caps(rdev);
if (ret)
return ret;
ret = rs780_parse_power_table(rdev);
if (ret)
return ret;
pi->voltage_control = false;
pi->gfx_clock_gating = true;
if (atom_parse_data_header(rdev->mode_info.atom_context, index, NULL,
&frev, &crev, &data_offset)) {
info = (union igp_info *)(rdev->mode_info.atom_context->bios + data_offset);
/* Get various system informations from bios */
switch (crev) {
case 1:
pi->num_of_cycles_in_period =
info->info.ucNumberOfCyclesInPeriod;
pi->num_of_cycles_in_period |=
info->info.ucNumberOfCyclesInPeriodHi << 8;
pi->invert_pwm_required =
(pi->num_of_cycles_in_period & 0x8000) ? true : false;
pi->boot_voltage = info->info.ucStartingPWM_HighTime;
pi->max_voltage = info->info.ucMaxNBVoltage;
pi->max_voltage |= info->info.ucMaxNBVoltageHigh << 8;
pi->min_voltage = info->info.ucMinNBVoltage;
pi->min_voltage |= info->info.ucMinNBVoltageHigh << 8;
pi->inter_voltage_low =
le16_to_cpu(info->info.usInterNBVoltageLow);
pi->inter_voltage_high =
le16_to_cpu(info->info.usInterNBVoltageHigh);
pi->voltage_control = true;
pi->bootup_uma_clk = info->info.usK8MemoryClock * 100;
break;
case 2:
pi->num_of_cycles_in_period =
le16_to_cpu(info->info_2.usNumberOfCyclesInPeriod);
pi->invert_pwm_required =
(pi->num_of_cycles_in_period & 0x8000) ? true : false;
pi->boot_voltage =
le16_to_cpu(info->info_2.usBootUpNBVoltage);
pi->max_voltage =
le16_to_cpu(info->info_2.usMaxNBVoltage);
pi->min_voltage =
le16_to_cpu(info->info_2.usMinNBVoltage);
pi->system_config =
le32_to_cpu(info->info_2.ulSystemConfig);
pi->pwm_voltage_control =
(pi->system_config & 0x4) ? true : false;
pi->voltage_control = true;
pi->bootup_uma_clk = le32_to_cpu(info->info_2.ulBootUpUMAClock);
break;
default:
DRM_ERROR("No integrated system info for your GPU\n");
return -EINVAL;
}
if (pi->min_voltage > pi->max_voltage)
pi->voltage_control = false;
if (pi->pwm_voltage_control) {
if ((pi->num_of_cycles_in_period == 0) ||
(pi->max_voltage == 0) ||
(pi->min_voltage == 0))
pi->voltage_control = false;
} else {
if ((pi->num_of_cycles_in_period == 0) ||
(pi->max_voltage == 0))
pi->voltage_control = false;
}
return 0;
}
radeon_dpm_fini(rdev);
return -EINVAL;
}
void rs780_dpm_print_power_state(struct radeon_device *rdev,
struct radeon_ps *rps)
{
struct igp_ps *ps = rs780_get_ps(rps);
r600_dpm_print_class_info(rps->class, rps->class2);
r600_dpm_print_cap_info(rps->caps);
printk("\tuvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk);
printk("\t\tpower level 0 sclk: %u vddc_index: %d\n",
ps->sclk_low, ps->min_voltage);
printk("\t\tpower level 1 sclk: %u vddc_index: %d\n",
ps->sclk_high, ps->max_voltage);
r600_dpm_print_ps_status(rdev, rps);
}
void rs780_dpm_fini(struct radeon_device *rdev)
{
int i;
for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
kfree(rdev->pm.dpm.ps[i].ps_priv);
}
kfree(rdev->pm.dpm.ps);
kfree(rdev->pm.dpm.priv);
}
u32 rs780_dpm_get_sclk(struct radeon_device *rdev, bool low)
{
struct igp_ps *requested_state = rs780_get_ps(rdev->pm.dpm.requested_ps);
if (low)
return requested_state->sclk_low;
else
return requested_state->sclk_high;
}
u32 rs780_dpm_get_mclk(struct radeon_device *rdev, bool low)
{
struct igp_power_info *pi = rs780_get_pi(rdev);
return pi->bootup_uma_clk;
}
void rs780_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
struct seq_file *m)
{
struct radeon_ps *rps = rdev->pm.dpm.current_ps;
struct igp_ps *ps = rs780_get_ps(rps);
u32 current_fb_div = RREG32(FVTHROT_STATUS_REG0) & CURRENT_FEEDBACK_DIV_MASK;
u32 func_cntl = RREG32(CG_SPLL_FUNC_CNTL);
u32 ref_div = ((func_cntl & SPLL_REF_DIV_MASK) >> SPLL_REF_DIV_SHIFT) + 1;
u32 post_div = ((func_cntl & SPLL_SW_HILEN_MASK) >> SPLL_SW_HILEN_SHIFT) + 1 +
((func_cntl & SPLL_SW_LOLEN_MASK) >> SPLL_SW_LOLEN_SHIFT) + 1;
u32 sclk = (rdev->clock.spll.reference_freq * current_fb_div) /
(post_div * ref_div);
seq_printf(m, "uvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk);
/* guess based on the current sclk */
if (sclk < (ps->sclk_low + 500))
seq_printf(m, "power level 0 sclk: %u vddc_index: %d\n",
ps->sclk_low, ps->min_voltage);
else
seq_printf(m, "power level 1 sclk: %u vddc_index: %d\n",
ps->sclk_high, ps->max_voltage);
}
int rs780_dpm_force_performance_level(struct radeon_device *rdev,
enum radeon_dpm_forced_level level)
{
struct igp_power_info *pi = rs780_get_pi(rdev);
struct radeon_ps *rps = rdev->pm.dpm.current_ps;
struct igp_ps *ps = rs780_get_ps(rps);
struct atom_clock_dividers dividers;
int ret;
rs780_clk_scaling_enable(rdev, false);
rs780_voltage_scaling_enable(rdev, false);
if (level == RADEON_DPM_FORCED_LEVEL_HIGH) {
if (pi->voltage_control)
rs780_force_voltage(rdev, pi->max_voltage);
ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
ps->sclk_high, false, &dividers);
if (ret)
return ret;
rs780_force_fbdiv(rdev, dividers.fb_div);
} else if (level == RADEON_DPM_FORCED_LEVEL_LOW) {
ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
ps->sclk_low, false, &dividers);
if (ret)
return ret;
rs780_force_fbdiv(rdev, dividers.fb_div);
if (pi->voltage_control)
rs780_force_voltage(rdev, pi->min_voltage);
} else {
if (pi->voltage_control)
rs780_force_voltage(rdev, pi->max_voltage);
if (ps->sclk_high != ps->sclk_low) {
WREG32_P(FVTHROT_FBDIV_REG1, 0, ~FORCE_FEEDBACK_DIV);
rs780_clk_scaling_enable(rdev, true);
}
if (pi->voltage_control) {
rs780_voltage_scaling_enable(rdev, true);
rs780_enable_voltage_scaling(rdev, rps);
}
}
rdev->pm.dpm.forced_level = level;
return 0;
}
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