1/* 2 * Copyright 2011 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Alex Deucher 23 */ 24 25#include <linux/pci.h> 26#include <linux/seq_file.h> 27 28#include "atom.h" 29#include "r600_dpm.h" 30#include "radeon.h" 31#include "radeon_asic.h" 32#include "rs780_dpm.h" 33#include "rs780d.h" 34 35static struct igp_ps *rs780_get_ps(struct radeon_ps *rps) 36{ 37 struct igp_ps *ps = rps->ps_priv; 38 39 return ps; 40} 41 42static struct igp_power_info *rs780_get_pi(struct radeon_device *rdev) 43{ 44 struct igp_power_info *pi = rdev->pm.dpm.priv; 45 46 return pi; 47} 48 49static void rs780_get_pm_mode_parameters(struct radeon_device *rdev) 50{ 51 struct igp_power_info *pi = rs780_get_pi(rdev); 52 struct radeon_mode_info *minfo = &rdev->mode_info; 53 struct drm_crtc *crtc; 54 struct radeon_crtc *radeon_crtc; 55 int i; 56 57 /* defaults */ 58 pi->crtc_id = 0; 59 pi->refresh_rate = 60; 60 61 for (i = 0; i < rdev->num_crtc; i++) { 62 crtc = (struct drm_crtc *)minfo->crtcs[i]; 63 if (crtc && crtc->enabled) { 64 radeon_crtc = to_radeon_crtc(crtc); 65 pi->crtc_id = radeon_crtc->crtc_id; 66 if (crtc->mode.htotal && crtc->mode.vtotal) 67 pi->refresh_rate = drm_mode_vrefresh(&crtc->mode); 68 break; 69 } 70 } 71} 72 73static void rs780_voltage_scaling_enable(struct radeon_device *rdev, bool enable); 74 75static int rs780_initialize_dpm_power_state(struct radeon_device *rdev, 76 struct radeon_ps *boot_ps) 77{ 78 struct atom_clock_dividers dividers; 79 struct igp_ps *default_state = rs780_get_ps(boot_ps); 80 int i, ret; 81 82 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 83 default_state->sclk_low, false, ÷rs); 84 if (ret) 85 return ret; 86 87 r600_engine_clock_entry_set_reference_divider(rdev, 0, dividers.ref_div); 88 r600_engine_clock_entry_set_feedback_divider(rdev, 0, dividers.fb_div); 89 r600_engine_clock_entry_set_post_divider(rdev, 0, dividers.post_div); 90 91 if (dividers.enable_post_div) 92 r600_engine_clock_entry_enable_post_divider(rdev, 0, true); 93 else 94 r600_engine_clock_entry_enable_post_divider(rdev, 0, false); 95 96 r600_engine_clock_entry_set_step_time(rdev, 0, R600_SST_DFLT); 97 r600_engine_clock_entry_enable_pulse_skipping(rdev, 0, false); 98 99 r600_engine_clock_entry_enable(rdev, 0, true); 100 for (i = 1; i < R600_PM_NUMBER_OF_SCLKS; i++) 101 r600_engine_clock_entry_enable(rdev, i, false); 102 103 r600_enable_mclk_control(rdev, false); 104 r600_voltage_control_enable_pins(rdev, 0); 105 106 return 0; 107} 108 109static int rs780_initialize_dpm_parameters(struct radeon_device *rdev, 110 struct radeon_ps *boot_ps) 111{ 112 int ret = 0; 113 int i; 114 115 r600_set_bsp(rdev, R600_BSU_DFLT, R600_BSP_DFLT); 116 117 r600_set_at(rdev, 0, 0, 0, 0); 118 119 r600_set_git(rdev, R600_GICST_DFLT); 120 121 for (i = 0; i < R600_PM_NUMBER_OF_TC; i++) 122 r600_set_tc(rdev, i, 0, 0); 123 124 r600_select_td(rdev, R600_TD_DFLT); 125 r600_set_vrc(rdev, 0); 126 127 r600_set_tpu(rdev, R600_TPU_DFLT); 128 r600_set_tpc(rdev, R600_TPC_DFLT); 129 130 r600_set_sstu(rdev, R600_SSTU_DFLT); 131 r600_set_sst(rdev, R600_SST_DFLT); 132 133 r600_set_fctu(rdev, R600_FCTU_DFLT); 134 r600_set_fct(rdev, R600_FCT_DFLT); 135 136 r600_set_vddc3d_oorsu(rdev, R600_VDDC3DOORSU_DFLT); 137 r600_set_vddc3d_oorphc(rdev, R600_VDDC3DOORPHC_DFLT); 138 r600_set_vddc3d_oorsdc(rdev, R600_VDDC3DOORSDC_DFLT); 139 r600_set_ctxcgtt3d_rphc(rdev, R600_CTXCGTT3DRPHC_DFLT); 140 r600_set_ctxcgtt3d_rsdc(rdev, R600_CTXCGTT3DRSDC_DFLT); 141 142 r600_vid_rt_set_vru(rdev, R600_VRU_DFLT); 143 r600_vid_rt_set_vrt(rdev, R600_VOLTAGERESPONSETIME_DFLT); 144 r600_vid_rt_set_ssu(rdev, R600_SPLLSTEPUNIT_DFLT); 145 146 ret = rs780_initialize_dpm_power_state(rdev, boot_ps); 147 148 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_LOW, 0); 149 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_MEDIUM, 0); 150 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_HIGH, 0); 151 152 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_LOW, 0); 153 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 0); 154 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_HIGH, 0); 155 156 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_LOW, 0); 157 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 0); 158 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_HIGH, 0); 159 160 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_LOW, R600_DISPLAY_WATERMARK_HIGH); 161 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_MEDIUM, R600_DISPLAY_WATERMARK_HIGH); 162 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_HIGH, R600_DISPLAY_WATERMARK_HIGH); 163 164 r600_power_level_enable(rdev, R600_POWER_LEVEL_CTXSW, false); 165 r600_power_level_enable(rdev, R600_POWER_LEVEL_HIGH, false); 166 r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, false); 167 r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, true); 168 169 r600_power_level_set_enter_index(rdev, R600_POWER_LEVEL_LOW); 170 171 r600_set_vrc(rdev, RS780_CGFTV_DFLT); 172 173 return ret; 174} 175 176static void rs780_start_dpm(struct radeon_device *rdev) 177{ 178 r600_enable_sclk_control(rdev, false); 179 r600_enable_mclk_control(rdev, false); 180 181 r600_dynamicpm_enable(rdev, true); 182 183 radeon_wait_for_vblank(rdev, 0); 184 radeon_wait_for_vblank(rdev, 1); 185 186 r600_enable_spll_bypass(rdev, true); 187 r600_wait_for_spll_change(rdev); 188 r600_enable_spll_bypass(rdev, false); 189 r600_wait_for_spll_change(rdev); 190 191 r600_enable_spll_bypass(rdev, true); 192 r600_wait_for_spll_change(rdev); 193 r600_enable_spll_bypass(rdev, false); 194 r600_wait_for_spll_change(rdev); 195 196 r600_enable_sclk_control(rdev, true); 197} 198 199 200static void rs780_preset_ranges_slow_clk_fbdiv_en(struct radeon_device *rdev) 201{ 202 WREG32_P(FVTHROT_SLOW_CLK_FEEDBACK_DIV_REG1, RANGE_SLOW_CLK_FEEDBACK_DIV_EN, 203 ~RANGE_SLOW_CLK_FEEDBACK_DIV_EN); 204 205 WREG32_P(FVTHROT_SLOW_CLK_FEEDBACK_DIV_REG1, 206 RANGE0_SLOW_CLK_FEEDBACK_DIV(RS780_SLOWCLKFEEDBACKDIV_DFLT), 207 ~RANGE0_SLOW_CLK_FEEDBACK_DIV_MASK); 208} 209 210static void rs780_preset_starting_fbdiv(struct radeon_device *rdev) 211{ 212 u32 fbdiv = (RREG32(CG_SPLL_FUNC_CNTL) & SPLL_FB_DIV_MASK) >> SPLL_FB_DIV_SHIFT; 213 214 WREG32_P(FVTHROT_FBDIV_REG1, STARTING_FEEDBACK_DIV(fbdiv), 215 ~STARTING_FEEDBACK_DIV_MASK); 216 217 WREG32_P(FVTHROT_FBDIV_REG2, FORCED_FEEDBACK_DIV(fbdiv), 218 ~FORCED_FEEDBACK_DIV_MASK); 219 220 WREG32_P(FVTHROT_FBDIV_REG1, FORCE_FEEDBACK_DIV, ~FORCE_FEEDBACK_DIV); 221} 222 223static void rs780_voltage_scaling_init(struct radeon_device *rdev) 224{ 225 struct igp_power_info *pi = rs780_get_pi(rdev); 226 u32 fv_throt_pwm_fb_div_range[3]; 227 u32 fv_throt_pwm_range[4]; 228 229 if (rdev->pdev->device == 0x9614) { 230 fv_throt_pwm_fb_div_range[0] = RS780D_FVTHROTPWMFBDIVRANGEREG0_DFLT; 231 fv_throt_pwm_fb_div_range[1] = RS780D_FVTHROTPWMFBDIVRANGEREG1_DFLT; 232 fv_throt_pwm_fb_div_range[2] = RS780D_FVTHROTPWMFBDIVRANGEREG2_DFLT; 233 } else if ((rdev->pdev->device == 0x9714) || 234 (rdev->pdev->device == 0x9715)) { 235 fv_throt_pwm_fb_div_range[0] = RS880D_FVTHROTPWMFBDIVRANGEREG0_DFLT; 236 fv_throt_pwm_fb_div_range[1] = RS880D_FVTHROTPWMFBDIVRANGEREG1_DFLT; 237 fv_throt_pwm_fb_div_range[2] = RS880D_FVTHROTPWMFBDIVRANGEREG2_DFLT; 238 } else { 239 fv_throt_pwm_fb_div_range[0] = RS780_FVTHROTPWMFBDIVRANGEREG0_DFLT; 240 fv_throt_pwm_fb_div_range[1] = RS780_FVTHROTPWMFBDIVRANGEREG1_DFLT; 241 fv_throt_pwm_fb_div_range[2] = RS780_FVTHROTPWMFBDIVRANGEREG2_DFLT; 242 } 243 244 if (pi->pwm_voltage_control) { 245 fv_throt_pwm_range[0] = pi->min_voltage; 246 fv_throt_pwm_range[1] = pi->min_voltage; 247 fv_throt_pwm_range[2] = pi->max_voltage; 248 fv_throt_pwm_range[3] = pi->max_voltage; 249 } else { 250 fv_throt_pwm_range[0] = pi->invert_pwm_required ? 251 RS780_FVTHROTPWMRANGE3_GPIO_DFLT : RS780_FVTHROTPWMRANGE0_GPIO_DFLT; 252 fv_throt_pwm_range[1] = pi->invert_pwm_required ? 253 RS780_FVTHROTPWMRANGE2_GPIO_DFLT : RS780_FVTHROTPWMRANGE1_GPIO_DFLT; 254 fv_throt_pwm_range[2] = pi->invert_pwm_required ? 255 RS780_FVTHROTPWMRANGE1_GPIO_DFLT : RS780_FVTHROTPWMRANGE2_GPIO_DFLT; 256 fv_throt_pwm_range[3] = pi->invert_pwm_required ? 257 RS780_FVTHROTPWMRANGE0_GPIO_DFLT : RS780_FVTHROTPWMRANGE3_GPIO_DFLT; 258 } 259 260 WREG32_P(FVTHROT_PWM_CTRL_REG0, 261 STARTING_PWM_HIGHTIME(pi->max_voltage), 262 ~STARTING_PWM_HIGHTIME_MASK); 263 264 WREG32_P(FVTHROT_PWM_CTRL_REG0, 265 NUMBER_OF_CYCLES_IN_PERIOD(pi->num_of_cycles_in_period), 266 ~NUMBER_OF_CYCLES_IN_PERIOD_MASK); 267 268 WREG32_P(FVTHROT_PWM_CTRL_REG0, FORCE_STARTING_PWM_HIGHTIME, 269 ~FORCE_STARTING_PWM_HIGHTIME); 270 271 if (pi->invert_pwm_required) 272 WREG32_P(FVTHROT_PWM_CTRL_REG0, INVERT_PWM_WAVEFORM, ~INVERT_PWM_WAVEFORM); 273 else 274 WREG32_P(FVTHROT_PWM_CTRL_REG0, 0, ~INVERT_PWM_WAVEFORM); 275 276 rs780_voltage_scaling_enable(rdev, true); 277 278 WREG32(FVTHROT_PWM_CTRL_REG1, 279 (MIN_PWM_HIGHTIME(pi->min_voltage) | 280 MAX_PWM_HIGHTIME(pi->max_voltage))); 281 282 WREG32(FVTHROT_PWM_US_REG0, RS780_FVTHROTPWMUSREG0_DFLT); 283 WREG32(FVTHROT_PWM_US_REG1, RS780_FVTHROTPWMUSREG1_DFLT); 284 WREG32(FVTHROT_PWM_DS_REG0, RS780_FVTHROTPWMDSREG0_DFLT); 285 WREG32(FVTHROT_PWM_DS_REG1, RS780_FVTHROTPWMDSREG1_DFLT); 286 287 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1, 288 RANGE0_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[0]), 289 ~RANGE0_PWM_FEEDBACK_DIV_MASK); 290 291 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG2, 292 (RANGE1_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[1]) | 293 RANGE2_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[2]))); 294 295 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG3, 296 (RANGE0_PWM(fv_throt_pwm_range[1]) | 297 RANGE1_PWM(fv_throt_pwm_range[2]))); 298 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG4, 299 (RANGE2_PWM(fv_throt_pwm_range[1]) | 300 RANGE3_PWM(fv_throt_pwm_range[2]))); 301} 302 303static void rs780_clk_scaling_enable(struct radeon_device *rdev, bool enable) 304{ 305 if (enable) 306 WREG32_P(FVTHROT_CNTRL_REG, ENABLE_FV_THROT | ENABLE_FV_UPDATE, 307 ~(ENABLE_FV_THROT | ENABLE_FV_UPDATE)); 308 else 309 WREG32_P(FVTHROT_CNTRL_REG, 0, 310 ~(ENABLE_FV_THROT | ENABLE_FV_UPDATE)); 311} 312 313static void rs780_voltage_scaling_enable(struct radeon_device *rdev, bool enable) 314{ 315 if (enable) 316 WREG32_P(FVTHROT_CNTRL_REG, ENABLE_FV_THROT_IO, ~ENABLE_FV_THROT_IO); 317 else 318 WREG32_P(FVTHROT_CNTRL_REG, 0, ~ENABLE_FV_THROT_IO); 319} 320 321static void rs780_set_engine_clock_wfc(struct radeon_device *rdev) 322{ 323 WREG32(FVTHROT_UTC0, RS780_FVTHROTUTC0_DFLT); 324 WREG32(FVTHROT_UTC1, RS780_FVTHROTUTC1_DFLT); 325 WREG32(FVTHROT_UTC2, RS780_FVTHROTUTC2_DFLT); 326 WREG32(FVTHROT_UTC3, RS780_FVTHROTUTC3_DFLT); 327 WREG32(FVTHROT_UTC4, RS780_FVTHROTUTC4_DFLT); 328 329 WREG32(FVTHROT_DTC0, RS780_FVTHROTDTC0_DFLT); 330 WREG32(FVTHROT_DTC1, RS780_FVTHROTDTC1_DFLT); 331 WREG32(FVTHROT_DTC2, RS780_FVTHROTDTC2_DFLT); 332 WREG32(FVTHROT_DTC3, RS780_FVTHROTDTC3_DFLT); 333 WREG32(FVTHROT_DTC4, RS780_FVTHROTDTC4_DFLT); 334} 335 336static void rs780_set_engine_clock_sc(struct radeon_device *rdev) 337{ 338 WREG32_P(FVTHROT_FBDIV_REG2, 339 FB_DIV_TIMER_VAL(RS780_FBDIVTIMERVAL_DFLT), 340 ~FB_DIV_TIMER_VAL_MASK); 341 342 WREG32_P(FVTHROT_CNTRL_REG, 343 REFRESH_RATE_DIVISOR(0) | MINIMUM_CIP(0xf), 344 ~(REFRESH_RATE_DIVISOR_MASK | MINIMUM_CIP_MASK)); 345} 346 347static void rs780_set_engine_clock_tdc(struct radeon_device *rdev) 348{ 349 WREG32_P(FVTHROT_CNTRL_REG, 0, ~(FORCE_TREND_SEL | TREND_SEL_MODE)); 350} 351 352static void rs780_set_engine_clock_ssc(struct radeon_device *rdev) 353{ 354 WREG32(FVTHROT_FB_US_REG0, RS780_FVTHROTFBUSREG0_DFLT); 355 WREG32(FVTHROT_FB_US_REG1, RS780_FVTHROTFBUSREG1_DFLT); 356 WREG32(FVTHROT_FB_DS_REG0, RS780_FVTHROTFBDSREG0_DFLT); 357 WREG32(FVTHROT_FB_DS_REG1, RS780_FVTHROTFBDSREG1_DFLT); 358 359 WREG32_P(FVTHROT_FBDIV_REG1, MAX_FEEDBACK_STEP(1), ~MAX_FEEDBACK_STEP_MASK); 360} 361 362static void rs780_program_at(struct radeon_device *rdev) 363{ 364 struct igp_power_info *pi = rs780_get_pi(rdev); 365 366 WREG32(FVTHROT_TARGET_REG, 30000000 / pi->refresh_rate); 367 WREG32(FVTHROT_CB1, 1000000 * 5 / pi->refresh_rate); 368 WREG32(FVTHROT_CB2, 1000000 * 10 / pi->refresh_rate); 369 WREG32(FVTHROT_CB3, 1000000 * 30 / pi->refresh_rate); 370 WREG32(FVTHROT_CB4, 1000000 * 50 / pi->refresh_rate); 371} 372 373static void rs780_disable_vbios_powersaving(struct radeon_device *rdev) 374{ 375 WREG32_P(CG_INTGFX_MISC, 0, ~0xFFF00000); 376} 377 378static void rs780_force_voltage(struct radeon_device *rdev, u16 voltage) 379{ 380 struct igp_ps *current_state = rs780_get_ps(rdev->pm.dpm.current_ps); 381 382 if ((current_state->max_voltage == RS780_VDDC_LEVEL_HIGH) && 383 (current_state->min_voltage == RS780_VDDC_LEVEL_HIGH)) 384 return; 385 386 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL); 387 388 udelay(1); 389 390 WREG32_P(FVTHROT_PWM_CTRL_REG0, 391 STARTING_PWM_HIGHTIME(voltage), 392 ~STARTING_PWM_HIGHTIME_MASK); 393 394 WREG32_P(FVTHROT_PWM_CTRL_REG0, 395 FORCE_STARTING_PWM_HIGHTIME, ~FORCE_STARTING_PWM_HIGHTIME); 396 397 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1, 0, 398 ~RANGE_PWM_FEEDBACK_DIV_EN); 399 400 udelay(1); 401 402 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL); 403} 404 405static void rs780_force_fbdiv(struct radeon_device *rdev, u32 fb_div) 406{ 407 struct igp_ps *current_state = rs780_get_ps(rdev->pm.dpm.current_ps); 408 409 if (current_state->sclk_low == current_state->sclk_high) 410 return; 411 412 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL); 413 414 WREG32_P(FVTHROT_FBDIV_REG2, FORCED_FEEDBACK_DIV(fb_div), 415 ~FORCED_FEEDBACK_DIV_MASK); 416 WREG32_P(FVTHROT_FBDIV_REG1, STARTING_FEEDBACK_DIV(fb_div), 417 ~STARTING_FEEDBACK_DIV_MASK); 418 WREG32_P(FVTHROT_FBDIV_REG1, FORCE_FEEDBACK_DIV, ~FORCE_FEEDBACK_DIV); 419 420 udelay(100); 421 422 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL); 423} 424 425static int rs780_set_engine_clock_scaling(struct radeon_device *rdev, 426 struct radeon_ps *new_ps, 427 struct radeon_ps *old_ps) 428{ 429 struct atom_clock_dividers min_dividers, max_dividers, current_max_dividers; 430 struct igp_ps *new_state = rs780_get_ps(new_ps); 431 struct igp_ps *old_state = rs780_get_ps(old_ps); 432 int ret; 433 434 if ((new_state->sclk_high == old_state->sclk_high) && 435 (new_state->sclk_low == old_state->sclk_low)) 436 return 0; 437 438 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 439 new_state->sclk_low, false, &min_dividers); 440 if (ret) 441 return ret; 442 443 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 444 new_state->sclk_high, false, &max_dividers); 445 if (ret) 446 return ret; 447 448 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 449 old_state->sclk_high, false, ¤t_max_dividers); 450 if (ret) 451 return ret; 452 453 if ((min_dividers.ref_div != max_dividers.ref_div) || 454 (min_dividers.post_div != max_dividers.post_div) || 455 (max_dividers.ref_div != current_max_dividers.ref_div) || 456 (max_dividers.post_div != current_max_dividers.post_div)) 457 return -EINVAL; 458 459 rs780_force_fbdiv(rdev, max_dividers.fb_div); 460 461 if (max_dividers.fb_div > min_dividers.fb_div) { 462 WREG32_P(FVTHROT_FBDIV_REG0, 463 MIN_FEEDBACK_DIV(min_dividers.fb_div) | 464 MAX_FEEDBACK_DIV(max_dividers.fb_div), 465 ~(MIN_FEEDBACK_DIV_MASK | MAX_FEEDBACK_DIV_MASK)); 466 467 WREG32_P(FVTHROT_FBDIV_REG1, 0, ~FORCE_FEEDBACK_DIV); 468 } 469 470 return 0; 471} 472 473static void rs780_set_engine_clock_spc(struct radeon_device *rdev, 474 struct radeon_ps *new_ps, 475 struct radeon_ps *old_ps) 476{ 477 struct igp_ps *new_state = rs780_get_ps(new_ps); 478 struct igp_ps *old_state = rs780_get_ps(old_ps); 479 struct igp_power_info *pi = rs780_get_pi(rdev); 480 481 if ((new_state->sclk_high == old_state->sclk_high) && 482 (new_state->sclk_low == old_state->sclk_low)) 483 return; 484 485 if (pi->crtc_id == 0) 486 WREG32_P(CG_INTGFX_MISC, 0, ~FVTHROT_VBLANK_SEL); 487 else 488 WREG32_P(CG_INTGFX_MISC, FVTHROT_VBLANK_SEL, ~FVTHROT_VBLANK_SEL); 489 490} 491 492static void rs780_activate_engine_clk_scaling(struct radeon_device *rdev, 493 struct radeon_ps *new_ps, 494 struct radeon_ps *old_ps) 495{ 496 struct igp_ps *new_state = rs780_get_ps(new_ps); 497 struct igp_ps *old_state = rs780_get_ps(old_ps); 498 499 if ((new_state->sclk_high == old_state->sclk_high) && 500 (new_state->sclk_low == old_state->sclk_low)) 501 return; 502 503 if (new_state->sclk_high == new_state->sclk_low) 504 return; 505 506 rs780_clk_scaling_enable(rdev, true); 507} 508 509static u32 rs780_get_voltage_for_vddc_level(struct radeon_device *rdev, 510 enum rs780_vddc_level vddc) 511{ 512 struct igp_power_info *pi = rs780_get_pi(rdev); 513 514 if (vddc == RS780_VDDC_LEVEL_HIGH) 515 return pi->max_voltage; 516 else if (vddc == RS780_VDDC_LEVEL_LOW) 517 return pi->min_voltage; 518 else 519 return pi->max_voltage; 520} 521 522static void rs780_enable_voltage_scaling(struct radeon_device *rdev, 523 struct radeon_ps *new_ps) 524{ 525 struct igp_ps *new_state = rs780_get_ps(new_ps); 526 struct igp_power_info *pi = rs780_get_pi(rdev); 527 enum rs780_vddc_level vddc_high, vddc_low; 528 529 udelay(100); 530 531 if ((new_state->max_voltage == RS780_VDDC_LEVEL_HIGH) && 532 (new_state->min_voltage == RS780_VDDC_LEVEL_HIGH)) 533 return; 534 535 vddc_high = rs780_get_voltage_for_vddc_level(rdev, 536 new_state->max_voltage); 537 vddc_low = rs780_get_voltage_for_vddc_level(rdev, 538 new_state->min_voltage); 539 540 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL); 541 542 udelay(1); 543 if (vddc_high > vddc_low) { 544 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1, 545 RANGE_PWM_FEEDBACK_DIV_EN, ~RANGE_PWM_FEEDBACK_DIV_EN); 546 547 WREG32_P(FVTHROT_PWM_CTRL_REG0, 0, ~FORCE_STARTING_PWM_HIGHTIME); 548 } else if (vddc_high == vddc_low) { 549 if (pi->max_voltage != vddc_high) { 550 WREG32_P(FVTHROT_PWM_CTRL_REG0, 551 STARTING_PWM_HIGHTIME(vddc_high), 552 ~STARTING_PWM_HIGHTIME_MASK); 553 554 WREG32_P(FVTHROT_PWM_CTRL_REG0, 555 FORCE_STARTING_PWM_HIGHTIME, 556 ~FORCE_STARTING_PWM_HIGHTIME); 557 } 558 } 559 560 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL); 561} 562 563static void rs780_set_uvd_clock_before_set_eng_clock(struct radeon_device *rdev, 564 struct radeon_ps *new_ps, 565 struct radeon_ps *old_ps) 566{ 567 struct igp_ps *new_state = rs780_get_ps(new_ps); 568 struct igp_ps *current_state = rs780_get_ps(old_ps); 569 570 if ((new_ps->vclk == old_ps->vclk) && 571 (new_ps->dclk == old_ps->dclk)) 572 return; 573 574 if (new_state->sclk_high >= current_state->sclk_high) 575 return; 576 577 radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk); 578} 579 580static void rs780_set_uvd_clock_after_set_eng_clock(struct radeon_device *rdev, 581 struct radeon_ps *new_ps, 582 struct radeon_ps *old_ps) 583{ 584 struct igp_ps *new_state = rs780_get_ps(new_ps); 585 struct igp_ps *current_state = rs780_get_ps(old_ps); 586 587 if ((new_ps->vclk == old_ps->vclk) && 588 (new_ps->dclk == old_ps->dclk)) 589 return; 590 591 if (new_state->sclk_high < current_state->sclk_high) 592 return; 593 594 radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk); 595} 596 597int rs780_dpm_enable(struct radeon_device *rdev) 598{ 599 struct igp_power_info *pi = rs780_get_pi(rdev); 600 struct radeon_ps *boot_ps = rdev->pm.dpm.boot_ps; 601 int ret; 602 603 rs780_get_pm_mode_parameters(rdev); 604 rs780_disable_vbios_powersaving(rdev); 605 606 if (r600_dynamicpm_enabled(rdev)) 607 return -EINVAL; 608 ret = rs780_initialize_dpm_parameters(rdev, boot_ps); 609 if (ret) 610 return ret; 611 rs780_start_dpm(rdev); 612 613 rs780_preset_ranges_slow_clk_fbdiv_en(rdev); 614 rs780_preset_starting_fbdiv(rdev); 615 if (pi->voltage_control) 616 rs780_voltage_scaling_init(rdev); 617 rs780_clk_scaling_enable(rdev, true); 618 rs780_set_engine_clock_sc(rdev); 619 rs780_set_engine_clock_wfc(rdev); 620 rs780_program_at(rdev); 621 rs780_set_engine_clock_tdc(rdev); 622 rs780_set_engine_clock_ssc(rdev); 623 624 if (pi->gfx_clock_gating) 625 r600_gfx_clockgating_enable(rdev, true); 626 627 return 0; 628} 629 630void rs780_dpm_disable(struct radeon_device *rdev) 631{ 632 struct igp_power_info *pi = rs780_get_pi(rdev); 633 634 r600_dynamicpm_enable(rdev, false); 635 636 rs780_clk_scaling_enable(rdev, false); 637 rs780_voltage_scaling_enable(rdev, false); 638 639 if (pi->gfx_clock_gating) 640 r600_gfx_clockgating_enable(rdev, false); 641 642 if (rdev->irq.installed && 643 (rdev->pm.int_thermal_type == THERMAL_TYPE_RV6XX)) { 644 rdev->irq.dpm_thermal = false; 645 radeon_irq_set(rdev); 646 } 647} 648 649int rs780_dpm_set_power_state(struct radeon_device *rdev) 650{ 651 struct igp_power_info *pi = rs780_get_pi(rdev); 652 struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps; 653 struct radeon_ps *old_ps = rdev->pm.dpm.current_ps; 654 int ret; 655 656 rs780_get_pm_mode_parameters(rdev); 657 658 rs780_set_uvd_clock_before_set_eng_clock(rdev, new_ps, old_ps); 659 660 if (pi->voltage_control) { 661 rs780_force_voltage(rdev, pi->max_voltage); 662 mdelay(5); 663 } 664 665 ret = rs780_set_engine_clock_scaling(rdev, new_ps, old_ps); 666 if (ret) 667 return ret; 668 rs780_set_engine_clock_spc(rdev, new_ps, old_ps); 669 670 rs780_activate_engine_clk_scaling(rdev, new_ps, old_ps); 671 672 if (pi->voltage_control) 673 rs780_enable_voltage_scaling(rdev, new_ps); 674 675 rs780_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps); 676 677 return 0; 678} 679 680void rs780_dpm_setup_asic(struct radeon_device *rdev) 681{ 682 683} 684 685void rs780_dpm_display_configuration_changed(struct radeon_device *rdev) 686{ 687 rs780_get_pm_mode_parameters(rdev); 688 rs780_program_at(rdev); 689} 690 691union igp_info { 692 struct _ATOM_INTEGRATED_SYSTEM_INFO info; 693 struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_2; 694}; 695 696union power_info { 697 struct _ATOM_POWERPLAY_INFO info; 698 struct _ATOM_POWERPLAY_INFO_V2 info_2; 699 struct _ATOM_POWERPLAY_INFO_V3 info_3; 700 struct _ATOM_PPLIB_POWERPLAYTABLE pplib; 701 struct _ATOM_PPLIB_POWERPLAYTABLE2 pplib2; 702 struct _ATOM_PPLIB_POWERPLAYTABLE3 pplib3; 703}; 704 705union pplib_clock_info { 706 struct _ATOM_PPLIB_R600_CLOCK_INFO r600; 707 struct _ATOM_PPLIB_RS780_CLOCK_INFO rs780; 708 struct _ATOM_PPLIB_EVERGREEN_CLOCK_INFO evergreen; 709 struct _ATOM_PPLIB_SUMO_CLOCK_INFO sumo; 710}; 711 712union pplib_power_state { 713 struct _ATOM_PPLIB_STATE v1; 714 struct _ATOM_PPLIB_STATE_V2 v2; 715}; 716 717static void rs780_parse_pplib_non_clock_info(struct radeon_device *rdev, 718 struct radeon_ps *rps, 719 struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info, 720 u8 table_rev) 721{ 722 rps->caps = le32_to_cpu(non_clock_info->ulCapsAndSettings); 723 rps->class = le16_to_cpu(non_clock_info->usClassification); 724 rps->class2 = le16_to_cpu(non_clock_info->usClassification2); 725 726 if (ATOM_PPLIB_NONCLOCKINFO_VER1 < table_rev) { 727 rps->vclk = le32_to_cpu(non_clock_info->ulVCLK); 728 rps->dclk = le32_to_cpu(non_clock_info->ulDCLK); 729 } else { 730 rps->vclk = 0; 731 rps->dclk = 0; 732 } 733 734 if (r600_is_uvd_state(rps->class, rps->class2)) { 735 if ((rps->vclk == 0) || (rps->dclk == 0)) { 736 rps->vclk = RS780_DEFAULT_VCLK_FREQ; 737 rps->dclk = RS780_DEFAULT_DCLK_FREQ; 738 } 739 } 740 741 if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT) 742 rdev->pm.dpm.boot_ps = rps; 743 if (rps->class & ATOM_PPLIB_CLASSIFICATION_UVDSTATE) 744 rdev->pm.dpm.uvd_ps = rps; 745} 746 747static void rs780_parse_pplib_clock_info(struct radeon_device *rdev, 748 struct radeon_ps *rps, 749 union pplib_clock_info *clock_info) 750{ 751 struct igp_ps *ps = rs780_get_ps(rps); 752 u32 sclk; 753 754 sclk = le16_to_cpu(clock_info->rs780.usLowEngineClockLow); 755 sclk |= clock_info->rs780.ucLowEngineClockHigh << 16; 756 ps->sclk_low = sclk; 757 sclk = le16_to_cpu(clock_info->rs780.usHighEngineClockLow); 758 sclk |= clock_info->rs780.ucHighEngineClockHigh << 16; 759 ps->sclk_high = sclk; 760 switch (le16_to_cpu(clock_info->rs780.usVDDC)) { 761 case ATOM_PPLIB_RS780_VOLTAGE_NONE: 762 default: 763 ps->min_voltage = RS780_VDDC_LEVEL_UNKNOWN; 764 ps->max_voltage = RS780_VDDC_LEVEL_UNKNOWN; 765 break; 766 case ATOM_PPLIB_RS780_VOLTAGE_LOW: 767 ps->min_voltage = RS780_VDDC_LEVEL_LOW; 768 ps->max_voltage = RS780_VDDC_LEVEL_LOW; 769 break; 770 case ATOM_PPLIB_RS780_VOLTAGE_HIGH: 771 ps->min_voltage = RS780_VDDC_LEVEL_HIGH; 772 ps->max_voltage = RS780_VDDC_LEVEL_HIGH; 773 break; 774 case ATOM_PPLIB_RS780_VOLTAGE_VARIABLE: 775 ps->min_voltage = RS780_VDDC_LEVEL_LOW; 776 ps->max_voltage = RS780_VDDC_LEVEL_HIGH; 777 break; 778 } 779 ps->flags = le32_to_cpu(clock_info->rs780.ulFlags); 780 781 if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT) { 782 ps->sclk_low = rdev->clock.default_sclk; 783 ps->sclk_high = rdev->clock.default_sclk; 784 ps->min_voltage = RS780_VDDC_LEVEL_HIGH; 785 ps->max_voltage = RS780_VDDC_LEVEL_HIGH; 786 } 787} 788 789static int rs780_parse_power_table(struct radeon_device *rdev) 790{ 791 struct radeon_mode_info *mode_info = &rdev->mode_info; 792 struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info; 793 union pplib_power_state *power_state; 794 int i; 795 union pplib_clock_info *clock_info; 796 union power_info *power_info; 797 int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo); 798 u16 data_offset; 799 u8 frev, crev; 800 struct igp_ps *ps; 801 802 if (!atom_parse_data_header(mode_info->atom_context, index, NULL, 803 &frev, &crev, &data_offset)) 804 return -EINVAL; 805 power_info = (union power_info *)(mode_info->atom_context->bios + data_offset); 806 807 rdev->pm.dpm.ps = kcalloc(power_info->pplib.ucNumStates, 808 sizeof(struct radeon_ps), 809 GFP_KERNEL); 810 if (!rdev->pm.dpm.ps) 811 return -ENOMEM; 812 813 for (i = 0; i < power_info->pplib.ucNumStates; i++) { 814 power_state = (union pplib_power_state *) 815 (mode_info->atom_context->bios + data_offset + 816 le16_to_cpu(power_info->pplib.usStateArrayOffset) + 817 i * power_info->pplib.ucStateEntrySize); 818 non_clock_info = (struct _ATOM_PPLIB_NONCLOCK_INFO *) 819 (mode_info->atom_context->bios + data_offset + 820 le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset) + 821 (power_state->v1.ucNonClockStateIndex * 822 power_info->pplib.ucNonClockSize)); 823 if (power_info->pplib.ucStateEntrySize - 1) { 824 clock_info = (union pplib_clock_info *) 825 (mode_info->atom_context->bios + data_offset + 826 le16_to_cpu(power_info->pplib.usClockInfoArrayOffset) + 827 (power_state->v1.ucClockStateIndices[0] * 828 power_info->pplib.ucClockInfoSize)); 829 ps = kzalloc(sizeof(struct igp_ps), GFP_KERNEL); 830 if (ps == NULL) { 831 kfree(rdev->pm.dpm.ps); 832 return -ENOMEM; 833 } 834 rdev->pm.dpm.ps[i].ps_priv = ps; 835 rs780_parse_pplib_non_clock_info(rdev, &rdev->pm.dpm.ps[i], 836 non_clock_info, 837 power_info->pplib.ucNonClockSize); 838 rs780_parse_pplib_clock_info(rdev, 839 &rdev->pm.dpm.ps[i], 840 clock_info); 841 } 842 } 843 rdev->pm.dpm.num_ps = power_info->pplib.ucNumStates; 844 return 0; 845} 846 847int rs780_dpm_init(struct radeon_device *rdev) 848{ 849 struct igp_power_info *pi; 850 int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo); 851 union igp_info *info; 852 u16 data_offset; 853 u8 frev, crev; 854 int ret; 855 856 pi = kzalloc(sizeof(struct igp_power_info), GFP_KERNEL); 857 if (pi == NULL) 858 return -ENOMEM; 859 rdev->pm.dpm.priv = pi; 860 861 ret = r600_get_platform_caps(rdev); 862 if (ret) 863 return ret; 864 865 ret = rs780_parse_power_table(rdev); 866 if (ret) 867 return ret; 868 869 pi->voltage_control = false; 870 pi->gfx_clock_gating = true; 871 872 if (atom_parse_data_header(rdev->mode_info.atom_context, index, NULL, 873 &frev, &crev, &data_offset)) { 874 info = (union igp_info *)(rdev->mode_info.atom_context->bios + data_offset); 875 876 /* Get various system informations from bios */ 877 switch (crev) { 878 case 1: 879 pi->num_of_cycles_in_period = 880 info->info.ucNumberOfCyclesInPeriod; 881 pi->num_of_cycles_in_period |= 882 info->info.ucNumberOfCyclesInPeriodHi << 8; 883 pi->invert_pwm_required = 884 (pi->num_of_cycles_in_period & 0x8000) ? true : false; 885 pi->boot_voltage = info->info.ucStartingPWM_HighTime; 886 pi->max_voltage = info->info.ucMaxNBVoltage; 887 pi->max_voltage |= info->info.ucMaxNBVoltageHigh << 8; 888 pi->min_voltage = info->info.ucMinNBVoltage; 889 pi->min_voltage |= info->info.ucMinNBVoltageHigh << 8; 890 pi->inter_voltage_low = 891 le16_to_cpu(info->info.usInterNBVoltageLow); 892 pi->inter_voltage_high = 893 le16_to_cpu(info->info.usInterNBVoltageHigh); 894 pi->voltage_control = true; 895 pi->bootup_uma_clk = info->info.usK8MemoryClock * 100; 896 break; 897 case 2: 898 pi->num_of_cycles_in_period = 899 le16_to_cpu(info->info_2.usNumberOfCyclesInPeriod); 900 pi->invert_pwm_required = 901 (pi->num_of_cycles_in_period & 0x8000) ? true : false; 902 pi->boot_voltage = 903 le16_to_cpu(info->info_2.usBootUpNBVoltage); 904 pi->max_voltage = 905 le16_to_cpu(info->info_2.usMaxNBVoltage); 906 pi->min_voltage = 907 le16_to_cpu(info->info_2.usMinNBVoltage); 908 pi->system_config = 909 le32_to_cpu(info->info_2.ulSystemConfig); 910 pi->pwm_voltage_control = 911 (pi->system_config & 0x4) ? true : false; 912 pi->voltage_control = true; 913 pi->bootup_uma_clk = le32_to_cpu(info->info_2.ulBootUpUMAClock); 914 break; 915 default: 916 DRM_ERROR("No integrated system info for your GPU\n"); 917 return -EINVAL; 918 } 919 if (pi->min_voltage > pi->max_voltage) 920 pi->voltage_control = false; 921 if (pi->pwm_voltage_control) { 922 if ((pi->num_of_cycles_in_period == 0) || 923 (pi->max_voltage == 0) || 924 (pi->min_voltage == 0)) 925 pi->voltage_control = false; 926 } else { 927 if ((pi->num_of_cycles_in_period == 0) || 928 (pi->max_voltage == 0)) 929 pi->voltage_control = false; 930 } 931 932 return 0; 933 } 934 radeon_dpm_fini(rdev); 935 return -EINVAL; 936} 937 938void rs780_dpm_print_power_state(struct radeon_device *rdev, 939 struct radeon_ps *rps) 940{ 941 struct igp_ps *ps = rs780_get_ps(rps); 942 943 r600_dpm_print_class_info(rps->class, rps->class2); 944 r600_dpm_print_cap_info(rps->caps); 945 printk("\tuvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk); 946 printk("\t\tpower level 0 sclk: %u vddc_index: %d\n", 947 ps->sclk_low, ps->min_voltage); 948 printk("\t\tpower level 1 sclk: %u vddc_index: %d\n", 949 ps->sclk_high, ps->max_voltage); 950 r600_dpm_print_ps_status(rdev, rps); 951} 952 953void rs780_dpm_fini(struct radeon_device *rdev) 954{ 955 int i; 956 957 for (i = 0; i < rdev->pm.dpm.num_ps; i++) { 958 kfree(rdev->pm.dpm.ps[i].ps_priv); 959 } 960 kfree(rdev->pm.dpm.ps); 961 kfree(rdev->pm.dpm.priv); 962} 963 964u32 rs780_dpm_get_sclk(struct radeon_device *rdev, bool low) 965{ 966 struct igp_ps *requested_state = rs780_get_ps(rdev->pm.dpm.requested_ps); 967 968 if (low) 969 return requested_state->sclk_low; 970 else 971 return requested_state->sclk_high; 972} 973 974u32 rs780_dpm_get_mclk(struct radeon_device *rdev, bool low) 975{ 976 struct igp_power_info *pi = rs780_get_pi(rdev); 977 978 return pi->bootup_uma_clk; 979} 980 981void rs780_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev, 982 struct seq_file *m) 983{ 984 struct radeon_ps *rps = rdev->pm.dpm.current_ps; 985 struct igp_ps *ps = rs780_get_ps(rps); 986 u32 current_fb_div = RREG32(FVTHROT_STATUS_REG0) & CURRENT_FEEDBACK_DIV_MASK; 987 u32 func_cntl = RREG32(CG_SPLL_FUNC_CNTL); 988 u32 ref_div = ((func_cntl & SPLL_REF_DIV_MASK) >> SPLL_REF_DIV_SHIFT) + 1; 989 u32 post_div = ((func_cntl & SPLL_SW_HILEN_MASK) >> SPLL_SW_HILEN_SHIFT) + 1 + 990 ((func_cntl & SPLL_SW_LOLEN_MASK) >> SPLL_SW_LOLEN_SHIFT) + 1; 991 u32 sclk = (rdev->clock.spll.reference_freq * current_fb_div) / 992 (post_div * ref_div); 993 994 seq_printf(m, "uvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk); 995 996 /* guess based on the current sclk */ 997 if (sclk < (ps->sclk_low + 500)) 998 seq_printf(m, "power level 0 sclk: %u vddc_index: %d\n", 999 ps->sclk_low, ps->min_voltage); 1000 else 1001 seq_printf(m, "power level 1 sclk: %u vddc_index: %d\n", 1002 ps->sclk_high, ps->max_voltage); 1003} 1004 1005/* get the current sclk in 10 khz units */ 1006u32 rs780_dpm_get_current_sclk(struct radeon_device *rdev) 1007{ 1008 u32 current_fb_div = RREG32(FVTHROT_STATUS_REG0) & CURRENT_FEEDBACK_DIV_MASK; 1009 u32 func_cntl = RREG32(CG_SPLL_FUNC_CNTL); 1010 u32 ref_div = ((func_cntl & SPLL_REF_DIV_MASK) >> SPLL_REF_DIV_SHIFT) + 1; 1011 u32 post_div = ((func_cntl & SPLL_SW_HILEN_MASK) >> SPLL_SW_HILEN_SHIFT) + 1 + 1012 ((func_cntl & SPLL_SW_LOLEN_MASK) >> SPLL_SW_LOLEN_SHIFT) + 1; 1013 u32 sclk = (rdev->clock.spll.reference_freq * current_fb_div) / 1014 (post_div * ref_div); 1015 1016 return sclk; 1017} 1018 1019/* get the current mclk in 10 khz units */ 1020u32 rs780_dpm_get_current_mclk(struct radeon_device *rdev) 1021{ 1022 struct igp_power_info *pi = rs780_get_pi(rdev); 1023 1024 return pi->bootup_uma_clk; 1025} 1026 1027int rs780_dpm_force_performance_level(struct radeon_device *rdev, 1028 enum radeon_dpm_forced_level level) 1029{ 1030 struct igp_power_info *pi = rs780_get_pi(rdev); 1031 struct radeon_ps *rps = rdev->pm.dpm.current_ps; 1032 struct igp_ps *ps = rs780_get_ps(rps); 1033 struct atom_clock_dividers dividers; 1034 int ret; 1035 1036 rs780_clk_scaling_enable(rdev, false); 1037 rs780_voltage_scaling_enable(rdev, false); 1038 1039 if (level == RADEON_DPM_FORCED_LEVEL_HIGH) { 1040 if (pi->voltage_control) 1041 rs780_force_voltage(rdev, pi->max_voltage); 1042 1043 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 1044 ps->sclk_high, false, ÷rs); 1045 if (ret) 1046 return ret; 1047 1048 rs780_force_fbdiv(rdev, dividers.fb_div); 1049 } else if (level == RADEON_DPM_FORCED_LEVEL_LOW) { 1050 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 1051 ps->sclk_low, false, ÷rs); 1052 if (ret) 1053 return ret; 1054 1055 rs780_force_fbdiv(rdev, dividers.fb_div); 1056 1057 if (pi->voltage_control) 1058 rs780_force_voltage(rdev, pi->min_voltage); 1059 } else { 1060 if (pi->voltage_control) 1061 rs780_force_voltage(rdev, pi->max_voltage); 1062 1063 if (ps->sclk_high != ps->sclk_low) { 1064 WREG32_P(FVTHROT_FBDIV_REG1, 0, ~FORCE_FEEDBACK_DIV); 1065 rs780_clk_scaling_enable(rdev, true); 1066 } 1067 1068 if (pi->voltage_control) { 1069 rs780_voltage_scaling_enable(rdev, true); 1070 rs780_enable_voltage_scaling(rdev, rps); 1071 } 1072 } 1073 1074 rdev->pm.dpm.forced_level = level; 1075 1076 return 0; 1077} 1078