rs780_dpm.c revision 1.3
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 struct drm_device *dev = rdev->ddev; 227 u32 fv_throt_pwm_fb_div_range[3]; 228 u32 fv_throt_pwm_range[4]; 229 230 if (dev->pdev->device == 0x9614) { 231 fv_throt_pwm_fb_div_range[0] = RS780D_FVTHROTPWMFBDIVRANGEREG0_DFLT; 232 fv_throt_pwm_fb_div_range[1] = RS780D_FVTHROTPWMFBDIVRANGEREG1_DFLT; 233 fv_throt_pwm_fb_div_range[2] = RS780D_FVTHROTPWMFBDIVRANGEREG2_DFLT; 234 } else if ((dev->pdev->device == 0x9714) || 235 (dev->pdev->device == 0x9715)) { 236 fv_throt_pwm_fb_div_range[0] = RS880D_FVTHROTPWMFBDIVRANGEREG0_DFLT; 237 fv_throt_pwm_fb_div_range[1] = RS880D_FVTHROTPWMFBDIVRANGEREG1_DFLT; 238 fv_throt_pwm_fb_div_range[2] = RS880D_FVTHROTPWMFBDIVRANGEREG2_DFLT; 239 } else { 240 fv_throt_pwm_fb_div_range[0] = RS780_FVTHROTPWMFBDIVRANGEREG0_DFLT; 241 fv_throt_pwm_fb_div_range[1] = RS780_FVTHROTPWMFBDIVRANGEREG1_DFLT; 242 fv_throt_pwm_fb_div_range[2] = RS780_FVTHROTPWMFBDIVRANGEREG2_DFLT; 243 } 244 245 if (pi->pwm_voltage_control) { 246 fv_throt_pwm_range[0] = pi->min_voltage; 247 fv_throt_pwm_range[1] = pi->min_voltage; 248 fv_throt_pwm_range[2] = pi->max_voltage; 249 fv_throt_pwm_range[3] = pi->max_voltage; 250 } else { 251 fv_throt_pwm_range[0] = pi->invert_pwm_required ? 252 RS780_FVTHROTPWMRANGE3_GPIO_DFLT : RS780_FVTHROTPWMRANGE0_GPIO_DFLT; 253 fv_throt_pwm_range[1] = pi->invert_pwm_required ? 254 RS780_FVTHROTPWMRANGE2_GPIO_DFLT : RS780_FVTHROTPWMRANGE1_GPIO_DFLT; 255 fv_throt_pwm_range[2] = pi->invert_pwm_required ? 256 RS780_FVTHROTPWMRANGE1_GPIO_DFLT : RS780_FVTHROTPWMRANGE2_GPIO_DFLT; 257 fv_throt_pwm_range[3] = pi->invert_pwm_required ? 258 RS780_FVTHROTPWMRANGE0_GPIO_DFLT : RS780_FVTHROTPWMRANGE3_GPIO_DFLT; 259 } 260 261 WREG32_P(FVTHROT_PWM_CTRL_REG0, 262 STARTING_PWM_HIGHTIME(pi->max_voltage), 263 ~STARTING_PWM_HIGHTIME_MASK); 264 265 WREG32_P(FVTHROT_PWM_CTRL_REG0, 266 NUMBER_OF_CYCLES_IN_PERIOD(pi->num_of_cycles_in_period), 267 ~NUMBER_OF_CYCLES_IN_PERIOD_MASK); 268 269 WREG32_P(FVTHROT_PWM_CTRL_REG0, FORCE_STARTING_PWM_HIGHTIME, 270 ~FORCE_STARTING_PWM_HIGHTIME); 271 272 if (pi->invert_pwm_required) 273 WREG32_P(FVTHROT_PWM_CTRL_REG0, INVERT_PWM_WAVEFORM, ~INVERT_PWM_WAVEFORM); 274 else 275 WREG32_P(FVTHROT_PWM_CTRL_REG0, 0, ~INVERT_PWM_WAVEFORM); 276 277 rs780_voltage_scaling_enable(rdev, true); 278 279 WREG32(FVTHROT_PWM_CTRL_REG1, 280 (MIN_PWM_HIGHTIME(pi->min_voltage) | 281 MAX_PWM_HIGHTIME(pi->max_voltage))); 282 283 WREG32(FVTHROT_PWM_US_REG0, RS780_FVTHROTPWMUSREG0_DFLT); 284 WREG32(FVTHROT_PWM_US_REG1, RS780_FVTHROTPWMUSREG1_DFLT); 285 WREG32(FVTHROT_PWM_DS_REG0, RS780_FVTHROTPWMDSREG0_DFLT); 286 WREG32(FVTHROT_PWM_DS_REG1, RS780_FVTHROTPWMDSREG1_DFLT); 287 288 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1, 289 RANGE0_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[0]), 290 ~RANGE0_PWM_FEEDBACK_DIV_MASK); 291 292 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG2, 293 (RANGE1_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[1]) | 294 RANGE2_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[2]))); 295 296 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG3, 297 (RANGE0_PWM(fv_throt_pwm_range[1]) | 298 RANGE1_PWM(fv_throt_pwm_range[2]))); 299 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG4, 300 (RANGE2_PWM(fv_throt_pwm_range[1]) | 301 RANGE3_PWM(fv_throt_pwm_range[2]))); 302} 303 304static void rs780_clk_scaling_enable(struct radeon_device *rdev, bool enable) 305{ 306 if (enable) 307 WREG32_P(FVTHROT_CNTRL_REG, ENABLE_FV_THROT | ENABLE_FV_UPDATE, 308 ~(ENABLE_FV_THROT | ENABLE_FV_UPDATE)); 309 else 310 WREG32_P(FVTHROT_CNTRL_REG, 0, 311 ~(ENABLE_FV_THROT | ENABLE_FV_UPDATE)); 312} 313 314static void rs780_voltage_scaling_enable(struct radeon_device *rdev, bool enable) 315{ 316 if (enable) 317 WREG32_P(FVTHROT_CNTRL_REG, ENABLE_FV_THROT_IO, ~ENABLE_FV_THROT_IO); 318 else 319 WREG32_P(FVTHROT_CNTRL_REG, 0, ~ENABLE_FV_THROT_IO); 320} 321 322static void rs780_set_engine_clock_wfc(struct radeon_device *rdev) 323{ 324 WREG32(FVTHROT_UTC0, RS780_FVTHROTUTC0_DFLT); 325 WREG32(FVTHROT_UTC1, RS780_FVTHROTUTC1_DFLT); 326 WREG32(FVTHROT_UTC2, RS780_FVTHROTUTC2_DFLT); 327 WREG32(FVTHROT_UTC3, RS780_FVTHROTUTC3_DFLT); 328 WREG32(FVTHROT_UTC4, RS780_FVTHROTUTC4_DFLT); 329 330 WREG32(FVTHROT_DTC0, RS780_FVTHROTDTC0_DFLT); 331 WREG32(FVTHROT_DTC1, RS780_FVTHROTDTC1_DFLT); 332 WREG32(FVTHROT_DTC2, RS780_FVTHROTDTC2_DFLT); 333 WREG32(FVTHROT_DTC3, RS780_FVTHROTDTC3_DFLT); 334 WREG32(FVTHROT_DTC4, RS780_FVTHROTDTC4_DFLT); 335} 336 337static void rs780_set_engine_clock_sc(struct radeon_device *rdev) 338{ 339 WREG32_P(FVTHROT_FBDIV_REG2, 340 FB_DIV_TIMER_VAL(RS780_FBDIVTIMERVAL_DFLT), 341 ~FB_DIV_TIMER_VAL_MASK); 342 343 WREG32_P(FVTHROT_CNTRL_REG, 344 REFRESH_RATE_DIVISOR(0) | MINIMUM_CIP(0xf), 345 ~(REFRESH_RATE_DIVISOR_MASK | MINIMUM_CIP_MASK)); 346} 347 348static void rs780_set_engine_clock_tdc(struct radeon_device *rdev) 349{ 350 WREG32_P(FVTHROT_CNTRL_REG, 0, ~(FORCE_TREND_SEL | TREND_SEL_MODE)); 351} 352 353static void rs780_set_engine_clock_ssc(struct radeon_device *rdev) 354{ 355 WREG32(FVTHROT_FB_US_REG0, RS780_FVTHROTFBUSREG0_DFLT); 356 WREG32(FVTHROT_FB_US_REG1, RS780_FVTHROTFBUSREG1_DFLT); 357 WREG32(FVTHROT_FB_DS_REG0, RS780_FVTHROTFBDSREG0_DFLT); 358 WREG32(FVTHROT_FB_DS_REG1, RS780_FVTHROTFBDSREG1_DFLT); 359 360 WREG32_P(FVTHROT_FBDIV_REG1, MAX_FEEDBACK_STEP(1), ~MAX_FEEDBACK_STEP_MASK); 361} 362 363static void rs780_program_at(struct radeon_device *rdev) 364{ 365 struct igp_power_info *pi = rs780_get_pi(rdev); 366 367 WREG32(FVTHROT_TARGET_REG, 30000000 / pi->refresh_rate); 368 WREG32(FVTHROT_CB1, 1000000 * 5 / pi->refresh_rate); 369 WREG32(FVTHROT_CB2, 1000000 * 10 / pi->refresh_rate); 370 WREG32(FVTHROT_CB3, 1000000 * 30 / pi->refresh_rate); 371 WREG32(FVTHROT_CB4, 1000000 * 50 / pi->refresh_rate); 372} 373 374static void rs780_disable_vbios_powersaving(struct radeon_device *rdev) 375{ 376 WREG32_P(CG_INTGFX_MISC, 0, ~0xFFF00000); 377} 378 379static void rs780_force_voltage(struct radeon_device *rdev, u16 voltage) 380{ 381 struct igp_ps *current_state = rs780_get_ps(rdev->pm.dpm.current_ps); 382 383 if ((current_state->max_voltage == RS780_VDDC_LEVEL_HIGH) && 384 (current_state->min_voltage == RS780_VDDC_LEVEL_HIGH)) 385 return; 386 387 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL); 388 389 udelay(1); 390 391 WREG32_P(FVTHROT_PWM_CTRL_REG0, 392 STARTING_PWM_HIGHTIME(voltage), 393 ~STARTING_PWM_HIGHTIME_MASK); 394 395 WREG32_P(FVTHROT_PWM_CTRL_REG0, 396 FORCE_STARTING_PWM_HIGHTIME, ~FORCE_STARTING_PWM_HIGHTIME); 397 398 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1, 0, 399 ~RANGE_PWM_FEEDBACK_DIV_EN); 400 401 udelay(1); 402 403 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL); 404} 405 406static void rs780_force_fbdiv(struct radeon_device *rdev, u32 fb_div) 407{ 408 struct igp_ps *current_state = rs780_get_ps(rdev->pm.dpm.current_ps); 409 410 if (current_state->sclk_low == current_state->sclk_high) 411 return; 412 413 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL); 414 415 WREG32_P(FVTHROT_FBDIV_REG2, FORCED_FEEDBACK_DIV(fb_div), 416 ~FORCED_FEEDBACK_DIV_MASK); 417 WREG32_P(FVTHROT_FBDIV_REG1, STARTING_FEEDBACK_DIV(fb_div), 418 ~STARTING_FEEDBACK_DIV_MASK); 419 WREG32_P(FVTHROT_FBDIV_REG1, FORCE_FEEDBACK_DIV, ~FORCE_FEEDBACK_DIV); 420 421 udelay(100); 422 423 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL); 424} 425 426static int rs780_set_engine_clock_scaling(struct radeon_device *rdev, 427 struct radeon_ps *new_ps, 428 struct radeon_ps *old_ps) 429{ 430 struct atom_clock_dividers min_dividers, max_dividers, current_max_dividers; 431 struct igp_ps *new_state = rs780_get_ps(new_ps); 432 struct igp_ps *old_state = rs780_get_ps(old_ps); 433 int ret; 434 435 if ((new_state->sclk_high == old_state->sclk_high) && 436 (new_state->sclk_low == old_state->sclk_low)) 437 return 0; 438 439 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 440 new_state->sclk_low, false, &min_dividers); 441 if (ret) 442 return ret; 443 444 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 445 new_state->sclk_high, false, &max_dividers); 446 if (ret) 447 return ret; 448 449 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 450 old_state->sclk_high, false, ¤t_max_dividers); 451 if (ret) 452 return ret; 453 454 if ((min_dividers.ref_div != max_dividers.ref_div) || 455 (min_dividers.post_div != max_dividers.post_div) || 456 (max_dividers.ref_div != current_max_dividers.ref_div) || 457 (max_dividers.post_div != current_max_dividers.post_div)) 458 return -EINVAL; 459 460 rs780_force_fbdiv(rdev, max_dividers.fb_div); 461 462 if (max_dividers.fb_div > min_dividers.fb_div) { 463 WREG32_P(FVTHROT_FBDIV_REG0, 464 MIN_FEEDBACK_DIV(min_dividers.fb_div) | 465 MAX_FEEDBACK_DIV(max_dividers.fb_div), 466 ~(MIN_FEEDBACK_DIV_MASK | MAX_FEEDBACK_DIV_MASK)); 467 468 WREG32_P(FVTHROT_FBDIV_REG1, 0, ~FORCE_FEEDBACK_DIV); 469 } 470 471 return 0; 472} 473 474static void rs780_set_engine_clock_spc(struct radeon_device *rdev, 475 struct radeon_ps *new_ps, 476 struct radeon_ps *old_ps) 477{ 478 struct igp_ps *new_state = rs780_get_ps(new_ps); 479 struct igp_ps *old_state = rs780_get_ps(old_ps); 480 struct igp_power_info *pi = rs780_get_pi(rdev); 481 482 if ((new_state->sclk_high == old_state->sclk_high) && 483 (new_state->sclk_low == old_state->sclk_low)) 484 return; 485 486 if (pi->crtc_id == 0) 487 WREG32_P(CG_INTGFX_MISC, 0, ~FVTHROT_VBLANK_SEL); 488 else 489 WREG32_P(CG_INTGFX_MISC, FVTHROT_VBLANK_SEL, ~FVTHROT_VBLANK_SEL); 490 491} 492 493static void rs780_activate_engine_clk_scaling(struct radeon_device *rdev, 494 struct radeon_ps *new_ps, 495 struct radeon_ps *old_ps) 496{ 497 struct igp_ps *new_state = rs780_get_ps(new_ps); 498 struct igp_ps *old_state = rs780_get_ps(old_ps); 499 500 if ((new_state->sclk_high == old_state->sclk_high) && 501 (new_state->sclk_low == old_state->sclk_low)) 502 return; 503 504 if (new_state->sclk_high == new_state->sclk_low) 505 return; 506 507 rs780_clk_scaling_enable(rdev, true); 508} 509 510static u32 rs780_get_voltage_for_vddc_level(struct radeon_device *rdev, 511 enum rs780_vddc_level vddc) 512{ 513 struct igp_power_info *pi = rs780_get_pi(rdev); 514 515 if (vddc == RS780_VDDC_LEVEL_HIGH) 516 return pi->max_voltage; 517 else if (vddc == RS780_VDDC_LEVEL_LOW) 518 return pi->min_voltage; 519 else 520 return pi->max_voltage; 521} 522 523static void rs780_enable_voltage_scaling(struct radeon_device *rdev, 524 struct radeon_ps *new_ps) 525{ 526 struct igp_ps *new_state = rs780_get_ps(new_ps); 527 struct igp_power_info *pi = rs780_get_pi(rdev); 528 enum rs780_vddc_level vddc_high, vddc_low; 529 530 udelay(100); 531 532 if ((new_state->max_voltage == RS780_VDDC_LEVEL_HIGH) && 533 (new_state->min_voltage == RS780_VDDC_LEVEL_HIGH)) 534 return; 535 536 vddc_high = rs780_get_voltage_for_vddc_level(rdev, 537 new_state->max_voltage); 538 vddc_low = rs780_get_voltage_for_vddc_level(rdev, 539 new_state->min_voltage); 540 541 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL); 542 543 udelay(1); 544 if (vddc_high > vddc_low) { 545 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1, 546 RANGE_PWM_FEEDBACK_DIV_EN, ~RANGE_PWM_FEEDBACK_DIV_EN); 547 548 WREG32_P(FVTHROT_PWM_CTRL_REG0, 0, ~FORCE_STARTING_PWM_HIGHTIME); 549 } else if (vddc_high == vddc_low) { 550 if (pi->max_voltage != vddc_high) { 551 WREG32_P(FVTHROT_PWM_CTRL_REG0, 552 STARTING_PWM_HIGHTIME(vddc_high), 553 ~STARTING_PWM_HIGHTIME_MASK); 554 555 WREG32_P(FVTHROT_PWM_CTRL_REG0, 556 FORCE_STARTING_PWM_HIGHTIME, 557 ~FORCE_STARTING_PWM_HIGHTIME); 558 } 559 } 560 561 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL); 562} 563 564static void rs780_set_uvd_clock_before_set_eng_clock(struct radeon_device *rdev, 565 struct radeon_ps *new_ps, 566 struct radeon_ps *old_ps) 567{ 568 struct igp_ps *new_state = rs780_get_ps(new_ps); 569 struct igp_ps *current_state = rs780_get_ps(old_ps); 570 571 if ((new_ps->vclk == old_ps->vclk) && 572 (new_ps->dclk == old_ps->dclk)) 573 return; 574 575 if (new_state->sclk_high >= current_state->sclk_high) 576 return; 577 578 radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk); 579} 580 581static void rs780_set_uvd_clock_after_set_eng_clock(struct radeon_device *rdev, 582 struct radeon_ps *new_ps, 583 struct radeon_ps *old_ps) 584{ 585 struct igp_ps *new_state = rs780_get_ps(new_ps); 586 struct igp_ps *current_state = rs780_get_ps(old_ps); 587 588 if ((new_ps->vclk == old_ps->vclk) && 589 (new_ps->dclk == old_ps->dclk)) 590 return; 591 592 if (new_state->sclk_high < current_state->sclk_high) 593 return; 594 595 radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk); 596} 597 598int rs780_dpm_enable(struct radeon_device *rdev) 599{ 600 struct igp_power_info *pi = rs780_get_pi(rdev); 601 struct radeon_ps *boot_ps = rdev->pm.dpm.boot_ps; 602 int ret; 603 604 rs780_get_pm_mode_parameters(rdev); 605 rs780_disable_vbios_powersaving(rdev); 606 607 if (r600_dynamicpm_enabled(rdev)) 608 return -EINVAL; 609 ret = rs780_initialize_dpm_parameters(rdev, boot_ps); 610 if (ret) 611 return ret; 612 rs780_start_dpm(rdev); 613 614 rs780_preset_ranges_slow_clk_fbdiv_en(rdev); 615 rs780_preset_starting_fbdiv(rdev); 616 if (pi->voltage_control) 617 rs780_voltage_scaling_init(rdev); 618 rs780_clk_scaling_enable(rdev, true); 619 rs780_set_engine_clock_sc(rdev); 620 rs780_set_engine_clock_wfc(rdev); 621 rs780_program_at(rdev); 622 rs780_set_engine_clock_tdc(rdev); 623 rs780_set_engine_clock_ssc(rdev); 624 625 if (pi->gfx_clock_gating) 626 r600_gfx_clockgating_enable(rdev, true); 627 628 return 0; 629} 630 631void rs780_dpm_disable(struct radeon_device *rdev) 632{ 633 struct igp_power_info *pi = rs780_get_pi(rdev); 634 635 r600_dynamicpm_enable(rdev, false); 636 637 rs780_clk_scaling_enable(rdev, false); 638 rs780_voltage_scaling_enable(rdev, false); 639 640 if (pi->gfx_clock_gating) 641 r600_gfx_clockgating_enable(rdev, false); 642 643 if (rdev->irq.installed && 644 (rdev->pm.int_thermal_type == THERMAL_TYPE_RV6XX)) { 645 rdev->irq.dpm_thermal = false; 646 radeon_irq_set(rdev); 647 } 648} 649 650int rs780_dpm_set_power_state(struct radeon_device *rdev) 651{ 652 struct igp_power_info *pi = rs780_get_pi(rdev); 653 struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps; 654 struct radeon_ps *old_ps = rdev->pm.dpm.current_ps; 655 int ret; 656 657 rs780_get_pm_mode_parameters(rdev); 658 659 rs780_set_uvd_clock_before_set_eng_clock(rdev, new_ps, old_ps); 660 661 if (pi->voltage_control) { 662 rs780_force_voltage(rdev, pi->max_voltage); 663 mdelay(5); 664 } 665 666 ret = rs780_set_engine_clock_scaling(rdev, new_ps, old_ps); 667 if (ret) 668 return ret; 669 rs780_set_engine_clock_spc(rdev, new_ps, old_ps); 670 671 rs780_activate_engine_clk_scaling(rdev, new_ps, old_ps); 672 673 if (pi->voltage_control) 674 rs780_enable_voltage_scaling(rdev, new_ps); 675 676 rs780_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps); 677 678 return 0; 679} 680 681void rs780_dpm_setup_asic(struct radeon_device *rdev) 682{ 683 684} 685 686void rs780_dpm_display_configuration_changed(struct radeon_device *rdev) 687{ 688 rs780_get_pm_mode_parameters(rdev); 689 rs780_program_at(rdev); 690} 691 692union igp_info { 693 struct _ATOM_INTEGRATED_SYSTEM_INFO info; 694 struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_2; 695}; 696 697union power_info { 698 struct _ATOM_POWERPLAY_INFO info; 699 struct _ATOM_POWERPLAY_INFO_V2 info_2; 700 struct _ATOM_POWERPLAY_INFO_V3 info_3; 701 struct _ATOM_PPLIB_POWERPLAYTABLE pplib; 702 struct _ATOM_PPLIB_POWERPLAYTABLE2 pplib2; 703 struct _ATOM_PPLIB_POWERPLAYTABLE3 pplib3; 704}; 705 706union pplib_clock_info { 707 struct _ATOM_PPLIB_R600_CLOCK_INFO r600; 708 struct _ATOM_PPLIB_RS780_CLOCK_INFO rs780; 709 struct _ATOM_PPLIB_EVERGREEN_CLOCK_INFO evergreen; 710 struct _ATOM_PPLIB_SUMO_CLOCK_INFO sumo; 711}; 712 713union pplib_power_state { 714 struct _ATOM_PPLIB_STATE v1; 715 struct _ATOM_PPLIB_STATE_V2 v2; 716}; 717 718static void rs780_parse_pplib_non_clock_info(struct radeon_device *rdev, 719 struct radeon_ps *rps, 720 struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info, 721 u8 table_rev) 722{ 723 rps->caps = le32_to_cpu(non_clock_info->ulCapsAndSettings); 724 rps->class = le16_to_cpu(non_clock_info->usClassification); 725 rps->class2 = le16_to_cpu(non_clock_info->usClassification2); 726 727 if (ATOM_PPLIB_NONCLOCKINFO_VER1 < table_rev) { 728 rps->vclk = le32_to_cpu(non_clock_info->ulVCLK); 729 rps->dclk = le32_to_cpu(non_clock_info->ulDCLK); 730 } else { 731 rps->vclk = 0; 732 rps->dclk = 0; 733 } 734 735 if (r600_is_uvd_state(rps->class, rps->class2)) { 736 if ((rps->vclk == 0) || (rps->dclk == 0)) { 737 rps->vclk = RS780_DEFAULT_VCLK_FREQ; 738 rps->dclk = RS780_DEFAULT_DCLK_FREQ; 739 } 740 } 741 742 if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT) 743 rdev->pm.dpm.boot_ps = rps; 744 if (rps->class & ATOM_PPLIB_CLASSIFICATION_UVDSTATE) 745 rdev->pm.dpm.uvd_ps = rps; 746} 747 748static void rs780_parse_pplib_clock_info(struct radeon_device *rdev, 749 struct radeon_ps *rps, 750 union pplib_clock_info *clock_info) 751{ 752 struct igp_ps *ps = rs780_get_ps(rps); 753 u32 sclk; 754 755 sclk = le16_to_cpu(clock_info->rs780.usLowEngineClockLow); 756 sclk |= clock_info->rs780.ucLowEngineClockHigh << 16; 757 ps->sclk_low = sclk; 758 sclk = le16_to_cpu(clock_info->rs780.usHighEngineClockLow); 759 sclk |= clock_info->rs780.ucHighEngineClockHigh << 16; 760 ps->sclk_high = sclk; 761 switch (le16_to_cpu(clock_info->rs780.usVDDC)) { 762 case ATOM_PPLIB_RS780_VOLTAGE_NONE: 763 default: 764 ps->min_voltage = RS780_VDDC_LEVEL_UNKNOWN; 765 ps->max_voltage = RS780_VDDC_LEVEL_UNKNOWN; 766 break; 767 case ATOM_PPLIB_RS780_VOLTAGE_LOW: 768 ps->min_voltage = RS780_VDDC_LEVEL_LOW; 769 ps->max_voltage = RS780_VDDC_LEVEL_LOW; 770 break; 771 case ATOM_PPLIB_RS780_VOLTAGE_HIGH: 772 ps->min_voltage = RS780_VDDC_LEVEL_HIGH; 773 ps->max_voltage = RS780_VDDC_LEVEL_HIGH; 774 break; 775 case ATOM_PPLIB_RS780_VOLTAGE_VARIABLE: 776 ps->min_voltage = RS780_VDDC_LEVEL_LOW; 777 ps->max_voltage = RS780_VDDC_LEVEL_HIGH; 778 break; 779 } 780 ps->flags = le32_to_cpu(clock_info->rs780.ulFlags); 781 782 if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT) { 783 ps->sclk_low = rdev->clock.default_sclk; 784 ps->sclk_high = rdev->clock.default_sclk; 785 ps->min_voltage = RS780_VDDC_LEVEL_HIGH; 786 ps->max_voltage = RS780_VDDC_LEVEL_HIGH; 787 } 788} 789 790static int rs780_parse_power_table(struct radeon_device *rdev) 791{ 792 struct radeon_mode_info *mode_info = &rdev->mode_info; 793 struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info; 794 union pplib_power_state *power_state; 795 int i; 796 union pplib_clock_info *clock_info; 797 union power_info *power_info; 798 int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo); 799 u16 data_offset; 800 u8 frev, crev; 801 struct igp_ps *ps; 802 803 if (!atom_parse_data_header(mode_info->atom_context, index, NULL, 804 &frev, &crev, &data_offset)) 805 return -EINVAL; 806 power_info = (union power_info *)(mode_info->atom_context->bios + data_offset); 807 808 rdev->pm.dpm.ps = kcalloc(power_info->pplib.ucNumStates, 809 sizeof(struct radeon_ps), 810 GFP_KERNEL); 811 if (!rdev->pm.dpm.ps) 812 return -ENOMEM; 813 814 for (i = 0; i < power_info->pplib.ucNumStates; i++) { 815 power_state = (union pplib_power_state *) 816 (mode_info->atom_context->bios + data_offset + 817 le16_to_cpu(power_info->pplib.usStateArrayOffset) + 818 i * power_info->pplib.ucStateEntrySize); 819 non_clock_info = (struct _ATOM_PPLIB_NONCLOCK_INFO *) 820 (mode_info->atom_context->bios + data_offset + 821 le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset) + 822 (power_state->v1.ucNonClockStateIndex * 823 power_info->pplib.ucNonClockSize)); 824 if (power_info->pplib.ucStateEntrySize - 1) { 825 clock_info = (union pplib_clock_info *) 826 (mode_info->atom_context->bios + data_offset + 827 le16_to_cpu(power_info->pplib.usClockInfoArrayOffset) + 828 (power_state->v1.ucClockStateIndices[0] * 829 power_info->pplib.ucClockInfoSize)); 830 ps = kzalloc(sizeof(struct igp_ps), GFP_KERNEL); 831 if (ps == NULL) { 832 kfree(rdev->pm.dpm.ps); 833 return -ENOMEM; 834 } 835 rdev->pm.dpm.ps[i].ps_priv = ps; 836 rs780_parse_pplib_non_clock_info(rdev, &rdev->pm.dpm.ps[i], 837 non_clock_info, 838 power_info->pplib.ucNonClockSize); 839 rs780_parse_pplib_clock_info(rdev, 840 &rdev->pm.dpm.ps[i], 841 clock_info); 842 } 843 } 844 rdev->pm.dpm.num_ps = power_info->pplib.ucNumStates; 845 return 0; 846} 847 848int rs780_dpm_init(struct radeon_device *rdev) 849{ 850 struct igp_power_info *pi; 851 int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo); 852 union igp_info *info; 853 u16 data_offset; 854 u8 frev, crev; 855 int ret; 856 857 pi = kzalloc(sizeof(struct igp_power_info), GFP_KERNEL); 858 if (pi == NULL) 859 return -ENOMEM; 860 rdev->pm.dpm.priv = pi; 861 862 ret = r600_get_platform_caps(rdev); 863 if (ret) 864 return ret; 865 866 ret = rs780_parse_power_table(rdev); 867 if (ret) 868 return ret; 869 870 pi->voltage_control = false; 871 pi->gfx_clock_gating = true; 872 873 if (atom_parse_data_header(rdev->mode_info.atom_context, index, NULL, 874 &frev, &crev, &data_offset)) { 875 info = (union igp_info *)(rdev->mode_info.atom_context->bios + data_offset); 876 877 /* Get various system informations from bios */ 878 switch (crev) { 879 case 1: 880 pi->num_of_cycles_in_period = 881 info->info.ucNumberOfCyclesInPeriod; 882 pi->num_of_cycles_in_period |= 883 info->info.ucNumberOfCyclesInPeriodHi << 8; 884 pi->invert_pwm_required = 885 (pi->num_of_cycles_in_period & 0x8000) ? true : false; 886 pi->boot_voltage = info->info.ucStartingPWM_HighTime; 887 pi->max_voltage = info->info.ucMaxNBVoltage; 888 pi->max_voltage |= info->info.ucMaxNBVoltageHigh << 8; 889 pi->min_voltage = info->info.ucMinNBVoltage; 890 pi->min_voltage |= info->info.ucMinNBVoltageHigh << 8; 891 pi->inter_voltage_low = 892 le16_to_cpu(info->info.usInterNBVoltageLow); 893 pi->inter_voltage_high = 894 le16_to_cpu(info->info.usInterNBVoltageHigh); 895 pi->voltage_control = true; 896 pi->bootup_uma_clk = info->info.usK8MemoryClock * 100; 897 break; 898 case 2: 899 pi->num_of_cycles_in_period = 900 le16_to_cpu(info->info_2.usNumberOfCyclesInPeriod); 901 pi->invert_pwm_required = 902 (pi->num_of_cycles_in_period & 0x8000) ? true : false; 903 pi->boot_voltage = 904 le16_to_cpu(info->info_2.usBootUpNBVoltage); 905 pi->max_voltage = 906 le16_to_cpu(info->info_2.usMaxNBVoltage); 907 pi->min_voltage = 908 le16_to_cpu(info->info_2.usMinNBVoltage); 909 pi->system_config = 910 le32_to_cpu(info->info_2.ulSystemConfig); 911 pi->pwm_voltage_control = 912 (pi->system_config & 0x4) ? true : false; 913 pi->voltage_control = true; 914 pi->bootup_uma_clk = le32_to_cpu(info->info_2.ulBootUpUMAClock); 915 break; 916 default: 917 DRM_ERROR("No integrated system info for your GPU\n"); 918 return -EINVAL; 919 } 920 if (pi->min_voltage > pi->max_voltage) 921 pi->voltage_control = false; 922 if (pi->pwm_voltage_control) { 923 if ((pi->num_of_cycles_in_period == 0) || 924 (pi->max_voltage == 0) || 925 (pi->min_voltage == 0)) 926 pi->voltage_control = false; 927 } else { 928 if ((pi->num_of_cycles_in_period == 0) || 929 (pi->max_voltage == 0)) 930 pi->voltage_control = false; 931 } 932 933 return 0; 934 } 935 radeon_dpm_fini(rdev); 936 return -EINVAL; 937} 938 939void rs780_dpm_print_power_state(struct radeon_device *rdev, 940 struct radeon_ps *rps) 941{ 942 struct igp_ps *ps = rs780_get_ps(rps); 943 944 r600_dpm_print_class_info(rps->class, rps->class2); 945 r600_dpm_print_cap_info(rps->caps); 946 printk("\tuvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk); 947 printk("\t\tpower level 0 sclk: %u vddc_index: %d\n", 948 ps->sclk_low, ps->min_voltage); 949 printk("\t\tpower level 1 sclk: %u vddc_index: %d\n", 950 ps->sclk_high, ps->max_voltage); 951 r600_dpm_print_ps_status(rdev, rps); 952} 953 954void rs780_dpm_fini(struct radeon_device *rdev) 955{ 956 int i; 957 958 for (i = 0; i < rdev->pm.dpm.num_ps; i++) { 959 kfree(rdev->pm.dpm.ps[i].ps_priv); 960 } 961 kfree(rdev->pm.dpm.ps); 962 kfree(rdev->pm.dpm.priv); 963} 964 965u32 rs780_dpm_get_sclk(struct radeon_device *rdev, bool low) 966{ 967 struct igp_ps *requested_state = rs780_get_ps(rdev->pm.dpm.requested_ps); 968 969 if (low) 970 return requested_state->sclk_low; 971 else 972 return requested_state->sclk_high; 973} 974 975u32 rs780_dpm_get_mclk(struct radeon_device *rdev, bool low) 976{ 977 struct igp_power_info *pi = rs780_get_pi(rdev); 978 979 return pi->bootup_uma_clk; 980} 981 982void rs780_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev, 983 struct seq_file *m) 984{ 985 struct radeon_ps *rps = rdev->pm.dpm.current_ps; 986 struct igp_ps *ps = rs780_get_ps(rps); 987 u32 current_fb_div = RREG32(FVTHROT_STATUS_REG0) & CURRENT_FEEDBACK_DIV_MASK; 988 u32 func_cntl = RREG32(CG_SPLL_FUNC_CNTL); 989 u32 ref_div = ((func_cntl & SPLL_REF_DIV_MASK) >> SPLL_REF_DIV_SHIFT) + 1; 990 u32 post_div = ((func_cntl & SPLL_SW_HILEN_MASK) >> SPLL_SW_HILEN_SHIFT) + 1 + 991 ((func_cntl & SPLL_SW_LOLEN_MASK) >> SPLL_SW_LOLEN_SHIFT) + 1; 992 u32 sclk = (rdev->clock.spll.reference_freq * current_fb_div) / 993 (post_div * ref_div); 994 995 seq_printf(m, "uvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk); 996 997 /* guess based on the current sclk */ 998 if (sclk < (ps->sclk_low + 500)) 999 seq_printf(m, "power level 0 sclk: %u vddc_index: %d\n", 1000 ps->sclk_low, ps->min_voltage); 1001 else 1002 seq_printf(m, "power level 1 sclk: %u vddc_index: %d\n", 1003 ps->sclk_high, ps->max_voltage); 1004} 1005 1006/* get the current sclk in 10 khz units */ 1007u32 rs780_dpm_get_current_sclk(struct radeon_device *rdev) 1008{ 1009 u32 current_fb_div = RREG32(FVTHROT_STATUS_REG0) & CURRENT_FEEDBACK_DIV_MASK; 1010 u32 func_cntl = RREG32(CG_SPLL_FUNC_CNTL); 1011 u32 ref_div = ((func_cntl & SPLL_REF_DIV_MASK) >> SPLL_REF_DIV_SHIFT) + 1; 1012 u32 post_div = ((func_cntl & SPLL_SW_HILEN_MASK) >> SPLL_SW_HILEN_SHIFT) + 1 + 1013 ((func_cntl & SPLL_SW_LOLEN_MASK) >> SPLL_SW_LOLEN_SHIFT) + 1; 1014 u32 sclk = (rdev->clock.spll.reference_freq * current_fb_div) / 1015 (post_div * ref_div); 1016 1017 return sclk; 1018} 1019 1020/* get the current mclk in 10 khz units */ 1021u32 rs780_dpm_get_current_mclk(struct radeon_device *rdev) 1022{ 1023 struct igp_power_info *pi = rs780_get_pi(rdev); 1024 1025 return pi->bootup_uma_clk; 1026} 1027 1028int rs780_dpm_force_performance_level(struct radeon_device *rdev, 1029 enum radeon_dpm_forced_level level) 1030{ 1031 struct igp_power_info *pi = rs780_get_pi(rdev); 1032 struct radeon_ps *rps = rdev->pm.dpm.current_ps; 1033 struct igp_ps *ps = rs780_get_ps(rps); 1034 struct atom_clock_dividers dividers; 1035 int ret; 1036 1037 rs780_clk_scaling_enable(rdev, false); 1038 rs780_voltage_scaling_enable(rdev, false); 1039 1040 if (level == RADEON_DPM_FORCED_LEVEL_HIGH) { 1041 if (pi->voltage_control) 1042 rs780_force_voltage(rdev, pi->max_voltage); 1043 1044 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 1045 ps->sclk_high, false, ÷rs); 1046 if (ret) 1047 return ret; 1048 1049 rs780_force_fbdiv(rdev, dividers.fb_div); 1050 } else if (level == RADEON_DPM_FORCED_LEVEL_LOW) { 1051 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM, 1052 ps->sclk_low, false, ÷rs); 1053 if (ret) 1054 return ret; 1055 1056 rs780_force_fbdiv(rdev, dividers.fb_div); 1057 1058 if (pi->voltage_control) 1059 rs780_force_voltage(rdev, pi->min_voltage); 1060 } else { 1061 if (pi->voltage_control) 1062 rs780_force_voltage(rdev, pi->max_voltage); 1063 1064 if (ps->sclk_high != ps->sclk_low) { 1065 WREG32_P(FVTHROT_FBDIV_REG1, 0, ~FORCE_FEEDBACK_DIV); 1066 rs780_clk_scaling_enable(rdev, true); 1067 } 1068 1069 if (pi->voltage_control) { 1070 rs780_voltage_scaling_enable(rdev, true); 1071 rs780_enable_voltage_scaling(rdev, rps); 1072 } 1073 } 1074 1075 rdev->pm.dpm.forced_level = level; 1076 1077 return 0; 1078} 1079