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perf/x86/amd/ibs: Update IBS MSRs and feature definitions
[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / radeon / rs780_dpm.c
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 "drmP.h"
26 #include "radeon.h"
27 #include "rs780d.h"
28 #include "r600_dpm.h"
29 #include "rs780_dpm.h"
30 #include "atom.h"
31 #include <linux/seq_file.h>
32
33 static struct igp_ps *rs780_get_ps(struct radeon_ps *rps)
34 {
35 struct igp_ps *ps = rps->ps_priv;
36
37 return ps;
38 }
39
40 static struct igp_power_info *rs780_get_pi(struct radeon_device *rdev)
41 {
42 struct igp_power_info *pi = rdev->pm.dpm.priv;
43
44 return pi;
45 }
46
47 static void rs780_get_pm_mode_parameters(struct radeon_device *rdev)
48 {
49 struct igp_power_info *pi = rs780_get_pi(rdev);
50 struct radeon_mode_info *minfo = &rdev->mode_info;
51 struct drm_crtc *crtc;
52 struct radeon_crtc *radeon_crtc;
53 int i;
54
55 /* defaults */
56 pi->crtc_id = 0;
57 pi->refresh_rate = 60;
58
59 for (i = 0; i < rdev->num_crtc; i++) {
60 crtc = (struct drm_crtc *)minfo->crtcs[i];
61 if (crtc && crtc->enabled) {
62 radeon_crtc = to_radeon_crtc(crtc);
63 pi->crtc_id = radeon_crtc->crtc_id;
64 if (crtc->mode.htotal && crtc->mode.vtotal)
65 pi->refresh_rate = drm_mode_vrefresh(&crtc->mode);
66 break;
67 }
68 }
69 }
70
71 static void rs780_voltage_scaling_enable(struct radeon_device *rdev, bool enable);
72
73 static int rs780_initialize_dpm_power_state(struct radeon_device *rdev,
74 struct radeon_ps *boot_ps)
75 {
76 struct atom_clock_dividers dividers;
77 struct igp_ps *default_state = rs780_get_ps(boot_ps);
78 int i, ret;
79
80 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
81 default_state->sclk_low, false, &dividers);
82 if (ret)
83 return ret;
84
85 r600_engine_clock_entry_set_reference_divider(rdev, 0, dividers.ref_div);
86 r600_engine_clock_entry_set_feedback_divider(rdev, 0, dividers.fb_div);
87 r600_engine_clock_entry_set_post_divider(rdev, 0, dividers.post_div);
88
89 if (dividers.enable_post_div)
90 r600_engine_clock_entry_enable_post_divider(rdev, 0, true);
91 else
92 r600_engine_clock_entry_enable_post_divider(rdev, 0, false);
93
94 r600_engine_clock_entry_set_step_time(rdev, 0, R600_SST_DFLT);
95 r600_engine_clock_entry_enable_pulse_skipping(rdev, 0, false);
96
97 r600_engine_clock_entry_enable(rdev, 0, true);
98 for (i = 1; i < R600_PM_NUMBER_OF_SCLKS; i++)
99 r600_engine_clock_entry_enable(rdev, i, false);
100
101 r600_enable_mclk_control(rdev, false);
102 r600_voltage_control_enable_pins(rdev, 0);
103
104 return 0;
105 }
106
107 static int rs780_initialize_dpm_parameters(struct radeon_device *rdev,
108 struct radeon_ps *boot_ps)
109 {
110 int ret = 0;
111 int i;
112
113 r600_set_bsp(rdev, R600_BSU_DFLT, R600_BSP_DFLT);
114
115 r600_set_at(rdev, 0, 0, 0, 0);
116
117 r600_set_git(rdev, R600_GICST_DFLT);
118
119 for (i = 0; i < R600_PM_NUMBER_OF_TC; i++)
120 r600_set_tc(rdev, i, 0, 0);
121
122 r600_select_td(rdev, R600_TD_DFLT);
123 r600_set_vrc(rdev, 0);
124
125 r600_set_tpu(rdev, R600_TPU_DFLT);
126 r600_set_tpc(rdev, R600_TPC_DFLT);
127
128 r600_set_sstu(rdev, R600_SSTU_DFLT);
129 r600_set_sst(rdev, R600_SST_DFLT);
130
131 r600_set_fctu(rdev, R600_FCTU_DFLT);
132 r600_set_fct(rdev, R600_FCT_DFLT);
133
134 r600_set_vddc3d_oorsu(rdev, R600_VDDC3DOORSU_DFLT);
135 r600_set_vddc3d_oorphc(rdev, R600_VDDC3DOORPHC_DFLT);
136 r600_set_vddc3d_oorsdc(rdev, R600_VDDC3DOORSDC_DFLT);
137 r600_set_ctxcgtt3d_rphc(rdev, R600_CTXCGTT3DRPHC_DFLT);
138 r600_set_ctxcgtt3d_rsdc(rdev, R600_CTXCGTT3DRSDC_DFLT);
139
140 r600_vid_rt_set_vru(rdev, R600_VRU_DFLT);
141 r600_vid_rt_set_vrt(rdev, R600_VOLTAGERESPONSETIME_DFLT);
142 r600_vid_rt_set_ssu(rdev, R600_SPLLSTEPUNIT_DFLT);
143
144 ret = rs780_initialize_dpm_power_state(rdev, boot_ps);
145
146 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_LOW, 0);
147 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_MEDIUM, 0);
148 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_HIGH, 0);
149
150 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_LOW, 0);
151 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 0);
152 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_HIGH, 0);
153
154 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_LOW, 0);
155 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 0);
156 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_HIGH, 0);
157
158 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_LOW, R600_DISPLAY_WATERMARK_HIGH);
159 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_MEDIUM, R600_DISPLAY_WATERMARK_HIGH);
160 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_HIGH, R600_DISPLAY_WATERMARK_HIGH);
161
162 r600_power_level_enable(rdev, R600_POWER_LEVEL_CTXSW, false);
163 r600_power_level_enable(rdev, R600_POWER_LEVEL_HIGH, false);
164 r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, false);
165 r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, true);
166
167 r600_power_level_set_enter_index(rdev, R600_POWER_LEVEL_LOW);
168
169 r600_set_vrc(rdev, RS780_CGFTV_DFLT);
170
171 return ret;
172 }
173
174 static void rs780_start_dpm(struct radeon_device *rdev)
175 {
176 r600_enable_sclk_control(rdev, false);
177 r600_enable_mclk_control(rdev, false);
178
179 r600_dynamicpm_enable(rdev, true);
180
181 radeon_wait_for_vblank(rdev, 0);
182 radeon_wait_for_vblank(rdev, 1);
183
184 r600_enable_spll_bypass(rdev, true);
185 r600_wait_for_spll_change(rdev);
186 r600_enable_spll_bypass(rdev, false);
187 r600_wait_for_spll_change(rdev);
188
189 r600_enable_spll_bypass(rdev, true);
190 r600_wait_for_spll_change(rdev);
191 r600_enable_spll_bypass(rdev, false);
192 r600_wait_for_spll_change(rdev);
193
194 r600_enable_sclk_control(rdev, true);
195 }
196
197
198 static void rs780_preset_ranges_slow_clk_fbdiv_en(struct radeon_device *rdev)
199 {
200 WREG32_P(FVTHROT_SLOW_CLK_FEEDBACK_DIV_REG1, RANGE_SLOW_CLK_FEEDBACK_DIV_EN,
201 ~RANGE_SLOW_CLK_FEEDBACK_DIV_EN);
202
203 WREG32_P(FVTHROT_SLOW_CLK_FEEDBACK_DIV_REG1,
204 RANGE0_SLOW_CLK_FEEDBACK_DIV(RS780_SLOWCLKFEEDBACKDIV_DFLT),
205 ~RANGE0_SLOW_CLK_FEEDBACK_DIV_MASK);
206 }
207
208 static void rs780_preset_starting_fbdiv(struct radeon_device *rdev)
209 {
210 u32 fbdiv = (RREG32(CG_SPLL_FUNC_CNTL) & SPLL_FB_DIV_MASK) >> SPLL_FB_DIV_SHIFT;
211
212 WREG32_P(FVTHROT_FBDIV_REG1, STARTING_FEEDBACK_DIV(fbdiv),
213 ~STARTING_FEEDBACK_DIV_MASK);
214
215 WREG32_P(FVTHROT_FBDIV_REG2, FORCED_FEEDBACK_DIV(fbdiv),
216 ~FORCED_FEEDBACK_DIV_MASK);
217
218 WREG32_P(FVTHROT_FBDIV_REG1, FORCE_FEEDBACK_DIV, ~FORCE_FEEDBACK_DIV);
219 }
220
221 static void rs780_voltage_scaling_init(struct radeon_device *rdev)
222 {
223 struct igp_power_info *pi = rs780_get_pi(rdev);
224 struct drm_device *dev = rdev->ddev;
225 u32 fv_throt_pwm_fb_div_range[3];
226 u32 fv_throt_pwm_range[4];
227
228 if (dev->pdev->device == 0x9614) {
229 fv_throt_pwm_fb_div_range[0] = RS780D_FVTHROTPWMFBDIVRANGEREG0_DFLT;
230 fv_throt_pwm_fb_div_range[1] = RS780D_FVTHROTPWMFBDIVRANGEREG1_DFLT;
231 fv_throt_pwm_fb_div_range[2] = RS780D_FVTHROTPWMFBDIVRANGEREG2_DFLT;
232 } else if ((dev->pdev->device == 0x9714) ||
233 (dev->pdev->device == 0x9715)) {
234 fv_throt_pwm_fb_div_range[0] = RS880D_FVTHROTPWMFBDIVRANGEREG0_DFLT;
235 fv_throt_pwm_fb_div_range[1] = RS880D_FVTHROTPWMFBDIVRANGEREG1_DFLT;
236 fv_throt_pwm_fb_div_range[2] = RS880D_FVTHROTPWMFBDIVRANGEREG2_DFLT;
237 } else {
238 fv_throt_pwm_fb_div_range[0] = RS780_FVTHROTPWMFBDIVRANGEREG0_DFLT;
239 fv_throt_pwm_fb_div_range[1] = RS780_FVTHROTPWMFBDIVRANGEREG1_DFLT;
240 fv_throt_pwm_fb_div_range[2] = RS780_FVTHROTPWMFBDIVRANGEREG2_DFLT;
241 }
242
243 if (pi->pwm_voltage_control) {
244 fv_throt_pwm_range[0] = pi->min_voltage;
245 fv_throt_pwm_range[1] = pi->min_voltage;
246 fv_throt_pwm_range[2] = pi->max_voltage;
247 fv_throt_pwm_range[3] = pi->max_voltage;
248 } else {
249 fv_throt_pwm_range[0] = pi->invert_pwm_required ?
250 RS780_FVTHROTPWMRANGE3_GPIO_DFLT : RS780_FVTHROTPWMRANGE0_GPIO_DFLT;
251 fv_throt_pwm_range[1] = pi->invert_pwm_required ?
252 RS780_FVTHROTPWMRANGE2_GPIO_DFLT : RS780_FVTHROTPWMRANGE1_GPIO_DFLT;
253 fv_throt_pwm_range[2] = pi->invert_pwm_required ?
254 RS780_FVTHROTPWMRANGE1_GPIO_DFLT : RS780_FVTHROTPWMRANGE2_GPIO_DFLT;
255 fv_throt_pwm_range[3] = pi->invert_pwm_required ?
256 RS780_FVTHROTPWMRANGE0_GPIO_DFLT : RS780_FVTHROTPWMRANGE3_GPIO_DFLT;
257 }
258
259 WREG32_P(FVTHROT_PWM_CTRL_REG0,
260 STARTING_PWM_HIGHTIME(pi->max_voltage),
261 ~STARTING_PWM_HIGHTIME_MASK);
262
263 WREG32_P(FVTHROT_PWM_CTRL_REG0,
264 NUMBER_OF_CYCLES_IN_PERIOD(pi->num_of_cycles_in_period),
265 ~NUMBER_OF_CYCLES_IN_PERIOD_MASK);
266
267 WREG32_P(FVTHROT_PWM_CTRL_REG0, FORCE_STARTING_PWM_HIGHTIME,
268 ~FORCE_STARTING_PWM_HIGHTIME);
269
270 if (pi->invert_pwm_required)
271 WREG32_P(FVTHROT_PWM_CTRL_REG0, INVERT_PWM_WAVEFORM, ~INVERT_PWM_WAVEFORM);
272 else
273 WREG32_P(FVTHROT_PWM_CTRL_REG0, 0, ~INVERT_PWM_WAVEFORM);
274
275 rs780_voltage_scaling_enable(rdev, true);
276
277 WREG32(FVTHROT_PWM_CTRL_REG1,
278 (MIN_PWM_HIGHTIME(pi->min_voltage) |
279 MAX_PWM_HIGHTIME(pi->max_voltage)));
280
281 WREG32(FVTHROT_PWM_US_REG0, RS780_FVTHROTPWMUSREG0_DFLT);
282 WREG32(FVTHROT_PWM_US_REG1, RS780_FVTHROTPWMUSREG1_DFLT);
283 WREG32(FVTHROT_PWM_DS_REG0, RS780_FVTHROTPWMDSREG0_DFLT);
284 WREG32(FVTHROT_PWM_DS_REG1, RS780_FVTHROTPWMDSREG1_DFLT);
285
286 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1,
287 RANGE0_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[0]),
288 ~RANGE0_PWM_FEEDBACK_DIV_MASK);
289
290 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG2,
291 (RANGE1_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[1]) |
292 RANGE2_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[2])));
293
294 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG3,
295 (RANGE0_PWM(fv_throt_pwm_range[1]) |
296 RANGE1_PWM(fv_throt_pwm_range[2])));
297 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG4,
298 (RANGE2_PWM(fv_throt_pwm_range[1]) |
299 RANGE3_PWM(fv_throt_pwm_range[2])));
300 }
301
302 static void rs780_clk_scaling_enable(struct radeon_device *rdev, bool enable)
303 {
304 if (enable)
305 WREG32_P(FVTHROT_CNTRL_REG, ENABLE_FV_THROT | ENABLE_FV_UPDATE,
306 ~(ENABLE_FV_THROT | ENABLE_FV_UPDATE));
307 else
308 WREG32_P(FVTHROT_CNTRL_REG, 0,
309 ~(ENABLE_FV_THROT | ENABLE_FV_UPDATE));
310 }
311
312 static void rs780_voltage_scaling_enable(struct radeon_device *rdev, bool enable)
313 {
314 if (enable)
315 WREG32_P(FVTHROT_CNTRL_REG, ENABLE_FV_THROT_IO, ~ENABLE_FV_THROT_IO);
316 else
317 WREG32_P(FVTHROT_CNTRL_REG, 0, ~ENABLE_FV_THROT_IO);
318 }
319
320 static void rs780_set_engine_clock_wfc(struct radeon_device *rdev)
321 {
322 WREG32(FVTHROT_UTC0, RS780_FVTHROTUTC0_DFLT);
323 WREG32(FVTHROT_UTC1, RS780_FVTHROTUTC1_DFLT);
324 WREG32(FVTHROT_UTC2, RS780_FVTHROTUTC2_DFLT);
325 WREG32(FVTHROT_UTC3, RS780_FVTHROTUTC3_DFLT);
326 WREG32(FVTHROT_UTC4, RS780_FVTHROTUTC4_DFLT);
327
328 WREG32(FVTHROT_DTC0, RS780_FVTHROTDTC0_DFLT);
329 WREG32(FVTHROT_DTC1, RS780_FVTHROTDTC1_DFLT);
330 WREG32(FVTHROT_DTC2, RS780_FVTHROTDTC2_DFLT);
331 WREG32(FVTHROT_DTC3, RS780_FVTHROTDTC3_DFLT);
332 WREG32(FVTHROT_DTC4, RS780_FVTHROTDTC4_DFLT);
333 }
334
335 static void rs780_set_engine_clock_sc(struct radeon_device *rdev)
336 {
337 WREG32_P(FVTHROT_FBDIV_REG2,
338 FB_DIV_TIMER_VAL(RS780_FBDIVTIMERVAL_DFLT),
339 ~FB_DIV_TIMER_VAL_MASK);
340
341 WREG32_P(FVTHROT_CNTRL_REG,
342 REFRESH_RATE_DIVISOR(0) | MINIMUM_CIP(0xf),
343 ~(REFRESH_RATE_DIVISOR_MASK | MINIMUM_CIP_MASK));
344 }
345
346 static void rs780_set_engine_clock_tdc(struct radeon_device *rdev)
347 {
348 WREG32_P(FVTHROT_CNTRL_REG, 0, ~(FORCE_TREND_SEL | TREND_SEL_MODE));
349 }
350
351 static void rs780_set_engine_clock_ssc(struct radeon_device *rdev)
352 {
353 WREG32(FVTHROT_FB_US_REG0, RS780_FVTHROTFBUSREG0_DFLT);
354 WREG32(FVTHROT_FB_US_REG1, RS780_FVTHROTFBUSREG1_DFLT);
355 WREG32(FVTHROT_FB_DS_REG0, RS780_FVTHROTFBDSREG0_DFLT);
356 WREG32(FVTHROT_FB_DS_REG1, RS780_FVTHROTFBDSREG1_DFLT);
357
358 WREG32_P(FVTHROT_FBDIV_REG1, MAX_FEEDBACK_STEP(1), ~MAX_FEEDBACK_STEP_MASK);
359 }
360
361 static void rs780_program_at(struct radeon_device *rdev)
362 {
363 struct igp_power_info *pi = rs780_get_pi(rdev);
364
365 WREG32(FVTHROT_TARGET_REG, 30000000 / pi->refresh_rate);
366 WREG32(FVTHROT_CB1, 1000000 * 5 / pi->refresh_rate);
367 WREG32(FVTHROT_CB2, 1000000 * 10 / pi->refresh_rate);
368 WREG32(FVTHROT_CB3, 1000000 * 30 / pi->refresh_rate);
369 WREG32(FVTHROT_CB4, 1000000 * 50 / pi->refresh_rate);
370 }
371
372 static void rs780_disable_vbios_powersaving(struct radeon_device *rdev)
373 {
374 WREG32_P(CG_INTGFX_MISC, 0, ~0xFFF00000);
375 }
376
377 static void rs780_force_voltage(struct radeon_device *rdev, u16 voltage)
378 {
379 struct igp_ps *current_state = rs780_get_ps(rdev->pm.dpm.current_ps);
380
381 if ((current_state->max_voltage == RS780_VDDC_LEVEL_HIGH) &&
382 (current_state->min_voltage == RS780_VDDC_LEVEL_HIGH))
383 return;
384
385 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL);
386
387 udelay(1);
388
389 WREG32_P(FVTHROT_PWM_CTRL_REG0,
390 STARTING_PWM_HIGHTIME(voltage),
391 ~STARTING_PWM_HIGHTIME_MASK);
392
393 WREG32_P(FVTHROT_PWM_CTRL_REG0,
394 FORCE_STARTING_PWM_HIGHTIME, ~FORCE_STARTING_PWM_HIGHTIME);
395
396 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1, 0,
397 ~RANGE_PWM_FEEDBACK_DIV_EN);
398
399 udelay(1);
400
401 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL);
402 }
403
404 static void rs780_force_fbdiv(struct radeon_device *rdev, u32 fb_div)
405 {
406 struct igp_ps *current_state = rs780_get_ps(rdev->pm.dpm.current_ps);
407
408 if (current_state->sclk_low == current_state->sclk_high)
409 return;
410
411 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL);
412
413 WREG32_P(FVTHROT_FBDIV_REG2, FORCED_FEEDBACK_DIV(fb_div),
414 ~FORCED_FEEDBACK_DIV_MASK);
415 WREG32_P(FVTHROT_FBDIV_REG1, STARTING_FEEDBACK_DIV(fb_div),
416 ~STARTING_FEEDBACK_DIV_MASK);
417 WREG32_P(FVTHROT_FBDIV_REG1, FORCE_FEEDBACK_DIV, ~FORCE_FEEDBACK_DIV);
418
419 udelay(100);
420
421 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL);
422 }
423
424 static int rs780_set_engine_clock_scaling(struct radeon_device *rdev,
425 struct radeon_ps *new_ps,
426 struct radeon_ps *old_ps)
427 {
428 struct atom_clock_dividers min_dividers, max_dividers, current_max_dividers;
429 struct igp_ps *new_state = rs780_get_ps(new_ps);
430 struct igp_ps *old_state = rs780_get_ps(old_ps);
431 int ret;
432
433 if ((new_state->sclk_high == old_state->sclk_high) &&
434 (new_state->sclk_low == old_state->sclk_low))
435 return 0;
436
437 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
438 new_state->sclk_low, false, &min_dividers);
439 if (ret)
440 return ret;
441
442 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
443 new_state->sclk_high, false, &max_dividers);
444 if (ret)
445 return ret;
446
447 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
448 old_state->sclk_high, false, &current_max_dividers);
449 if (ret)
450 return ret;
451
452 if ((min_dividers.ref_div != max_dividers.ref_div) ||
453 (min_dividers.post_div != max_dividers.post_div) ||
454 (max_dividers.ref_div != current_max_dividers.ref_div) ||
455 (max_dividers.post_div != current_max_dividers.post_div))
456 return -EINVAL;
457
458 rs780_force_fbdiv(rdev, max_dividers.fb_div);
459
460 if (max_dividers.fb_div > min_dividers.fb_div) {
461 WREG32_P(FVTHROT_FBDIV_REG0,
462 MIN_FEEDBACK_DIV(min_dividers.fb_div) |
463 MAX_FEEDBACK_DIV(max_dividers.fb_div),
464 ~(MIN_FEEDBACK_DIV_MASK | MAX_FEEDBACK_DIV_MASK));
465
466 WREG32_P(FVTHROT_FBDIV_REG1, 0, ~FORCE_FEEDBACK_DIV);
467 }
468
469 return 0;
470 }
471
472 static void rs780_set_engine_clock_spc(struct radeon_device *rdev,
473 struct radeon_ps *new_ps,
474 struct radeon_ps *old_ps)
475 {
476 struct igp_ps *new_state = rs780_get_ps(new_ps);
477 struct igp_ps *old_state = rs780_get_ps(old_ps);
478 struct igp_power_info *pi = rs780_get_pi(rdev);
479
480 if ((new_state->sclk_high == old_state->sclk_high) &&
481 (new_state->sclk_low == old_state->sclk_low))
482 return;
483
484 if (pi->crtc_id == 0)
485 WREG32_P(CG_INTGFX_MISC, 0, ~FVTHROT_VBLANK_SEL);
486 else
487 WREG32_P(CG_INTGFX_MISC, FVTHROT_VBLANK_SEL, ~FVTHROT_VBLANK_SEL);
488
489 }
490
491 static void rs780_activate_engine_clk_scaling(struct radeon_device *rdev,
492 struct radeon_ps *new_ps,
493 struct radeon_ps *old_ps)
494 {
495 struct igp_ps *new_state = rs780_get_ps(new_ps);
496 struct igp_ps *old_state = rs780_get_ps(old_ps);
497
498 if ((new_state->sclk_high == old_state->sclk_high) &&
499 (new_state->sclk_low == old_state->sclk_low))
500 return;
501
502 if (new_state->sclk_high == new_state->sclk_low)
503 return;
504
505 rs780_clk_scaling_enable(rdev, true);
506 }
507
508 static u32 rs780_get_voltage_for_vddc_level(struct radeon_device *rdev,
509 enum rs780_vddc_level vddc)
510 {
511 struct igp_power_info *pi = rs780_get_pi(rdev);
512
513 if (vddc == RS780_VDDC_LEVEL_HIGH)
514 return pi->max_voltage;
515 else if (vddc == RS780_VDDC_LEVEL_LOW)
516 return pi->min_voltage;
517 else
518 return pi->max_voltage;
519 }
520
521 static void rs780_enable_voltage_scaling(struct radeon_device *rdev,
522 struct radeon_ps *new_ps)
523 {
524 struct igp_ps *new_state = rs780_get_ps(new_ps);
525 struct igp_power_info *pi = rs780_get_pi(rdev);
526 enum rs780_vddc_level vddc_high, vddc_low;
527
528 udelay(100);
529
530 if ((new_state->max_voltage == RS780_VDDC_LEVEL_HIGH) &&
531 (new_state->min_voltage == RS780_VDDC_LEVEL_HIGH))
532 return;
533
534 vddc_high = rs780_get_voltage_for_vddc_level(rdev,
535 new_state->max_voltage);
536 vddc_low = rs780_get_voltage_for_vddc_level(rdev,
537 new_state->min_voltage);
538
539 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL);
540
541 udelay(1);
542 if (vddc_high > vddc_low) {
543 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1,
544 RANGE_PWM_FEEDBACK_DIV_EN, ~RANGE_PWM_FEEDBACK_DIV_EN);
545
546 WREG32_P(FVTHROT_PWM_CTRL_REG0, 0, ~FORCE_STARTING_PWM_HIGHTIME);
547 } else if (vddc_high == vddc_low) {
548 if (pi->max_voltage != vddc_high) {
549 WREG32_P(FVTHROT_PWM_CTRL_REG0,
550 STARTING_PWM_HIGHTIME(vddc_high),
551 ~STARTING_PWM_HIGHTIME_MASK);
552
553 WREG32_P(FVTHROT_PWM_CTRL_REG0,
554 FORCE_STARTING_PWM_HIGHTIME,
555 ~FORCE_STARTING_PWM_HIGHTIME);
556 }
557 }
558
559 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL);
560 }
561
562 static void rs780_set_uvd_clock_before_set_eng_clock(struct radeon_device *rdev,
563 struct radeon_ps *new_ps,
564 struct radeon_ps *old_ps)
565 {
566 struct igp_ps *new_state = rs780_get_ps(new_ps);
567 struct igp_ps *current_state = rs780_get_ps(old_ps);
568
569 if ((new_ps->vclk == old_ps->vclk) &&
570 (new_ps->dclk == old_ps->dclk))
571 return;
572
573 if (new_state->sclk_high >= current_state->sclk_high)
574 return;
575
576 radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk);
577 }
578
579 static void rs780_set_uvd_clock_after_set_eng_clock(struct radeon_device *rdev,
580 struct radeon_ps *new_ps,
581 struct radeon_ps *old_ps)
582 {
583 struct igp_ps *new_state = rs780_get_ps(new_ps);
584 struct igp_ps *current_state = rs780_get_ps(old_ps);
585
586 if ((new_ps->vclk == old_ps->vclk) &&
587 (new_ps->dclk == old_ps->dclk))
588 return;
589
590 if (new_state->sclk_high < current_state->sclk_high)
591 return;
592
593 radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk);
594 }
595
596 int rs780_dpm_enable(struct radeon_device *rdev)
597 {
598 struct igp_power_info *pi = rs780_get_pi(rdev);
599 struct radeon_ps *boot_ps = rdev->pm.dpm.boot_ps;
600 int ret;
601
602 rs780_get_pm_mode_parameters(rdev);
603 rs780_disable_vbios_powersaving(rdev);
604
605 if (r600_dynamicpm_enabled(rdev))
606 return -EINVAL;
607 ret = rs780_initialize_dpm_parameters(rdev, boot_ps);
608 if (ret)
609 return ret;
610 rs780_start_dpm(rdev);
611
612 rs780_preset_ranges_slow_clk_fbdiv_en(rdev);
613 rs780_preset_starting_fbdiv(rdev);
614 if (pi->voltage_control)
615 rs780_voltage_scaling_init(rdev);
616 rs780_clk_scaling_enable(rdev, true);
617 rs780_set_engine_clock_sc(rdev);
618 rs780_set_engine_clock_wfc(rdev);
619 rs780_program_at(rdev);
620 rs780_set_engine_clock_tdc(rdev);
621 rs780_set_engine_clock_ssc(rdev);
622
623 if (pi->gfx_clock_gating)
624 r600_gfx_clockgating_enable(rdev, true);
625
626 return 0;
627 }
628
629 void rs780_dpm_disable(struct radeon_device *rdev)
630 {
631 struct igp_power_info *pi = rs780_get_pi(rdev);
632
633 r600_dynamicpm_enable(rdev, false);
634
635 rs780_clk_scaling_enable(rdev, false);
636 rs780_voltage_scaling_enable(rdev, false);
637
638 if (pi->gfx_clock_gating)
639 r600_gfx_clockgating_enable(rdev, false);
640
641 if (rdev->irq.installed &&
642 (rdev->pm.int_thermal_type == THERMAL_TYPE_RV6XX)) {
643 rdev->irq.dpm_thermal = false;
644 radeon_irq_set(rdev);
645 }
646 }
647
648 int rs780_dpm_set_power_state(struct radeon_device *rdev)
649 {
650 struct igp_power_info *pi = rs780_get_pi(rdev);
651 struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps;
652 struct radeon_ps *old_ps = rdev->pm.dpm.current_ps;
653 int ret;
654
655 rs780_get_pm_mode_parameters(rdev);
656
657 rs780_set_uvd_clock_before_set_eng_clock(rdev, new_ps, old_ps);
658
659 if (pi->voltage_control) {
660 rs780_force_voltage(rdev, pi->max_voltage);
661 mdelay(5);
662 }
663
664 ret = rs780_set_engine_clock_scaling(rdev, new_ps, old_ps);
665 if (ret)
666 return ret;
667 rs780_set_engine_clock_spc(rdev, new_ps, old_ps);
668
669 rs780_activate_engine_clk_scaling(rdev, new_ps, old_ps);
670
671 if (pi->voltage_control)
672 rs780_enable_voltage_scaling(rdev, new_ps);
673
674 rs780_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps);
675
676 return 0;
677 }
678
679 void rs780_dpm_setup_asic(struct radeon_device *rdev)
680 {
681
682 }
683
684 void rs780_dpm_display_configuration_changed(struct radeon_device *rdev)
685 {
686 rs780_get_pm_mode_parameters(rdev);
687 rs780_program_at(rdev);
688 }
689
690 union igp_info {
691 struct _ATOM_INTEGRATED_SYSTEM_INFO info;
692 struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_2;
693 };
694
695 union power_info {
696 struct _ATOM_POWERPLAY_INFO info;
697 struct _ATOM_POWERPLAY_INFO_V2 info_2;
698 struct _ATOM_POWERPLAY_INFO_V3 info_3;
699 struct _ATOM_PPLIB_POWERPLAYTABLE pplib;
700 struct _ATOM_PPLIB_POWERPLAYTABLE2 pplib2;
701 struct _ATOM_PPLIB_POWERPLAYTABLE3 pplib3;
702 };
703
704 union pplib_clock_info {
705 struct _ATOM_PPLIB_R600_CLOCK_INFO r600;
706 struct _ATOM_PPLIB_RS780_CLOCK_INFO rs780;
707 struct _ATOM_PPLIB_EVERGREEN_CLOCK_INFO evergreen;
708 struct _ATOM_PPLIB_SUMO_CLOCK_INFO sumo;
709 };
710
711 union pplib_power_state {
712 struct _ATOM_PPLIB_STATE v1;
713 struct _ATOM_PPLIB_STATE_V2 v2;
714 };
715
716 static void rs780_parse_pplib_non_clock_info(struct radeon_device *rdev,
717 struct radeon_ps *rps,
718 struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info,
719 u8 table_rev)
720 {
721 rps->caps = le32_to_cpu(non_clock_info->ulCapsAndSettings);
722 rps->class = le16_to_cpu(non_clock_info->usClassification);
723 rps->class2 = le16_to_cpu(non_clock_info->usClassification2);
724
725 if (ATOM_PPLIB_NONCLOCKINFO_VER1 < table_rev) {
726 rps->vclk = le32_to_cpu(non_clock_info->ulVCLK);
727 rps->dclk = le32_to_cpu(non_clock_info->ulDCLK);
728 } else {
729 rps->vclk = 0;
730 rps->dclk = 0;
731 }
732
733 if (r600_is_uvd_state(rps->class, rps->class2)) {
734 if ((rps->vclk == 0) || (rps->dclk == 0)) {
735 rps->vclk = RS780_DEFAULT_VCLK_FREQ;
736 rps->dclk = RS780_DEFAULT_DCLK_FREQ;
737 }
738 }
739
740 if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT)
741 rdev->pm.dpm.boot_ps = rps;
742 if (rps->class & ATOM_PPLIB_CLASSIFICATION_UVDSTATE)
743 rdev->pm.dpm.uvd_ps = rps;
744 }
745
746 static void rs780_parse_pplib_clock_info(struct radeon_device *rdev,
747 struct radeon_ps *rps,
748 union pplib_clock_info *clock_info)
749 {
750 struct igp_ps *ps = rs780_get_ps(rps);
751 u32 sclk;
752
753 sclk = le16_to_cpu(clock_info->rs780.usLowEngineClockLow);
754 sclk |= clock_info->rs780.ucLowEngineClockHigh << 16;
755 ps->sclk_low = sclk;
756 sclk = le16_to_cpu(clock_info->rs780.usHighEngineClockLow);
757 sclk |= clock_info->rs780.ucHighEngineClockHigh << 16;
758 ps->sclk_high = sclk;
759 switch (le16_to_cpu(clock_info->rs780.usVDDC)) {
760 case ATOM_PPLIB_RS780_VOLTAGE_NONE:
761 default:
762 ps->min_voltage = RS780_VDDC_LEVEL_UNKNOWN;
763 ps->max_voltage = RS780_VDDC_LEVEL_UNKNOWN;
764 break;
765 case ATOM_PPLIB_RS780_VOLTAGE_LOW:
766 ps->min_voltage = RS780_VDDC_LEVEL_LOW;
767 ps->max_voltage = RS780_VDDC_LEVEL_LOW;
768 break;
769 case ATOM_PPLIB_RS780_VOLTAGE_HIGH:
770 ps->min_voltage = RS780_VDDC_LEVEL_HIGH;
771 ps->max_voltage = RS780_VDDC_LEVEL_HIGH;
772 break;
773 case ATOM_PPLIB_RS780_VOLTAGE_VARIABLE:
774 ps->min_voltage = RS780_VDDC_LEVEL_LOW;
775 ps->max_voltage = RS780_VDDC_LEVEL_HIGH;
776 break;
777 }
778 ps->flags = le32_to_cpu(clock_info->rs780.ulFlags);
779
780 if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT) {
781 ps->sclk_low = rdev->clock.default_sclk;
782 ps->sclk_high = rdev->clock.default_sclk;
783 ps->min_voltage = RS780_VDDC_LEVEL_HIGH;
784 ps->max_voltage = RS780_VDDC_LEVEL_HIGH;
785 }
786 }
787
788 static int rs780_parse_power_table(struct radeon_device *rdev)
789 {
790 struct radeon_mode_info *mode_info = &rdev->mode_info;
791 struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info;
792 union pplib_power_state *power_state;
793 int i;
794 union pplib_clock_info *clock_info;
795 union power_info *power_info;
796 int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo);
797 u16 data_offset;
798 u8 frev, crev;
799 struct igp_ps *ps;
800
801 if (!atom_parse_data_header(mode_info->atom_context, index, NULL,
802 &frev, &crev, &data_offset))
803 return -EINVAL;
804 power_info = (union power_info *)(mode_info->atom_context->bios + data_offset);
805
806 rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) *
807 power_info->pplib.ucNumStates, GFP_KERNEL);
808 if (!rdev->pm.dpm.ps)
809 return -ENOMEM;
810
811 for (i = 0; i < power_info->pplib.ucNumStates; i++) {
812 power_state = (union pplib_power_state *)
813 (mode_info->atom_context->bios + data_offset +
814 le16_to_cpu(power_info->pplib.usStateArrayOffset) +
815 i * power_info->pplib.ucStateEntrySize);
816 non_clock_info = (struct _ATOM_PPLIB_NONCLOCK_INFO *)
817 (mode_info->atom_context->bios + data_offset +
818 le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset) +
819 (power_state->v1.ucNonClockStateIndex *
820 power_info->pplib.ucNonClockSize));
821 if (power_info->pplib.ucStateEntrySize - 1) {
822 clock_info = (union pplib_clock_info *)
823 (mode_info->atom_context->bios + data_offset +
824 le16_to_cpu(power_info->pplib.usClockInfoArrayOffset) +
825 (power_state->v1.ucClockStateIndices[0] *
826 power_info->pplib.ucClockInfoSize));
827 ps = kzalloc(sizeof(struct igp_ps), GFP_KERNEL);
828 if (ps == NULL) {
829 kfree(rdev->pm.dpm.ps);
830 return -ENOMEM;
831 }
832 rdev->pm.dpm.ps[i].ps_priv = ps;
833 rs780_parse_pplib_non_clock_info(rdev, &rdev->pm.dpm.ps[i],
834 non_clock_info,
835 power_info->pplib.ucNonClockSize);
836 rs780_parse_pplib_clock_info(rdev,
837 &rdev->pm.dpm.ps[i],
838 clock_info);
839 }
840 }
841 rdev->pm.dpm.num_ps = power_info->pplib.ucNumStates;
842 return 0;
843 }
844
845 int rs780_dpm_init(struct radeon_device *rdev)
846 {
847 struct igp_power_info *pi;
848 int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo);
849 union igp_info *info;
850 u16 data_offset;
851 u8 frev, crev;
852 int ret;
853
854 pi = kzalloc(sizeof(struct igp_power_info), GFP_KERNEL);
855 if (pi == NULL)
856 return -ENOMEM;
857 rdev->pm.dpm.priv = pi;
858
859 ret = r600_get_platform_caps(rdev);
860 if (ret)
861 return ret;
862
863 ret = rs780_parse_power_table(rdev);
864 if (ret)
865 return ret;
866
867 pi->voltage_control = false;
868 pi->gfx_clock_gating = true;
869
870 if (atom_parse_data_header(rdev->mode_info.atom_context, index, NULL,
871 &frev, &crev, &data_offset)) {
872 info = (union igp_info *)(rdev->mode_info.atom_context->bios + data_offset);
873
874 /* Get various system informations from bios */
875 switch (crev) {
876 case 1:
877 pi->num_of_cycles_in_period =
878 info->info.ucNumberOfCyclesInPeriod;
879 pi->num_of_cycles_in_period |=
880 info->info.ucNumberOfCyclesInPeriodHi << 8;
881 pi->invert_pwm_required =
882 (pi->num_of_cycles_in_period & 0x8000) ? true : false;
883 pi->boot_voltage = info->info.ucStartingPWM_HighTime;
884 pi->max_voltage = info->info.ucMaxNBVoltage;
885 pi->max_voltage |= info->info.ucMaxNBVoltageHigh << 8;
886 pi->min_voltage = info->info.ucMinNBVoltage;
887 pi->min_voltage |= info->info.ucMinNBVoltageHigh << 8;
888 pi->inter_voltage_low =
889 le16_to_cpu(info->info.usInterNBVoltageLow);
890 pi->inter_voltage_high =
891 le16_to_cpu(info->info.usInterNBVoltageHigh);
892 pi->voltage_control = true;
893 pi->bootup_uma_clk = info->info.usK8MemoryClock * 100;
894 break;
895 case 2:
896 pi->num_of_cycles_in_period =
897 le16_to_cpu(info->info_2.usNumberOfCyclesInPeriod);
898 pi->invert_pwm_required =
899 (pi->num_of_cycles_in_period & 0x8000) ? true : false;
900 pi->boot_voltage =
901 le16_to_cpu(info->info_2.usBootUpNBVoltage);
902 pi->max_voltage =
903 le16_to_cpu(info->info_2.usMaxNBVoltage);
904 pi->min_voltage =
905 le16_to_cpu(info->info_2.usMinNBVoltage);
906 pi->system_config =
907 le32_to_cpu(info->info_2.ulSystemConfig);
908 pi->pwm_voltage_control =
909 (pi->system_config & 0x4) ? true : false;
910 pi->voltage_control = true;
911 pi->bootup_uma_clk = le32_to_cpu(info->info_2.ulBootUpUMAClock);
912 break;
913 default:
914 DRM_ERROR("No integrated system info for your GPU\n");
915 return -EINVAL;
916 }
917 if (pi->min_voltage > pi->max_voltage)
918 pi->voltage_control = false;
919 if (pi->pwm_voltage_control) {
920 if ((pi->num_of_cycles_in_period == 0) ||
921 (pi->max_voltage == 0) ||
922 (pi->min_voltage == 0))
923 pi->voltage_control = false;
924 } else {
925 if ((pi->num_of_cycles_in_period == 0) ||
926 (pi->max_voltage == 0))
927 pi->voltage_control = false;
928 }
929
930 return 0;
931 }
932 radeon_dpm_fini(rdev);
933 return -EINVAL;
934 }
935
936 void rs780_dpm_print_power_state(struct radeon_device *rdev,
937 struct radeon_ps *rps)
938 {
939 struct igp_ps *ps = rs780_get_ps(rps);
940
941 r600_dpm_print_class_info(rps->class, rps->class2);
942 r600_dpm_print_cap_info(rps->caps);
943 printk("\tuvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk);
944 printk("\t\tpower level 0 sclk: %u vddc_index: %d\n",
945 ps->sclk_low, ps->min_voltage);
946 printk("\t\tpower level 1 sclk: %u vddc_index: %d\n",
947 ps->sclk_high, ps->max_voltage);
948 r600_dpm_print_ps_status(rdev, rps);
949 }
950
951 void rs780_dpm_fini(struct radeon_device *rdev)
952 {
953 int i;
954
955 for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
956 kfree(rdev->pm.dpm.ps[i].ps_priv);
957 }
958 kfree(rdev->pm.dpm.ps);
959 kfree(rdev->pm.dpm.priv);
960 }
961
962 u32 rs780_dpm_get_sclk(struct radeon_device *rdev, bool low)
963 {
964 struct igp_ps *requested_state = rs780_get_ps(rdev->pm.dpm.requested_ps);
965
966 if (low)
967 return requested_state->sclk_low;
968 else
969 return requested_state->sclk_high;
970 }
971
972 u32 rs780_dpm_get_mclk(struct radeon_device *rdev, bool low)
973 {
974 struct igp_power_info *pi = rs780_get_pi(rdev);
975
976 return pi->bootup_uma_clk;
977 }
978
979 void rs780_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
980 struct seq_file *m)
981 {
982 struct radeon_ps *rps = rdev->pm.dpm.current_ps;
983 struct igp_ps *ps = rs780_get_ps(rps);
984 u32 current_fb_div = RREG32(FVTHROT_STATUS_REG0) & CURRENT_FEEDBACK_DIV_MASK;
985 u32 func_cntl = RREG32(CG_SPLL_FUNC_CNTL);
986 u32 ref_div = ((func_cntl & SPLL_REF_DIV_MASK) >> SPLL_REF_DIV_SHIFT) + 1;
987 u32 post_div = ((func_cntl & SPLL_SW_HILEN_MASK) >> SPLL_SW_HILEN_SHIFT) + 1 +
988 ((func_cntl & SPLL_SW_LOLEN_MASK) >> SPLL_SW_LOLEN_SHIFT) + 1;
989 u32 sclk = (rdev->clock.spll.reference_freq * current_fb_div) /
990 (post_div * ref_div);
991
992 seq_printf(m, "uvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk);
993
994 /* guess based on the current sclk */
995 if (sclk < (ps->sclk_low + 500))
996 seq_printf(m, "power level 0 sclk: %u vddc_index: %d\n",
997 ps->sclk_low, ps->min_voltage);
998 else
999 seq_printf(m, "power level 1 sclk: %u vddc_index: %d\n",
1000 ps->sclk_high, ps->max_voltage);
1001 }
1002
1003 int rs780_dpm_force_performance_level(struct radeon_device *rdev,
1004 enum radeon_dpm_forced_level level)
1005 {
1006 struct igp_power_info *pi = rs780_get_pi(rdev);
1007 struct radeon_ps *rps = rdev->pm.dpm.current_ps;
1008 struct igp_ps *ps = rs780_get_ps(rps);
1009 struct atom_clock_dividers dividers;
1010 int ret;
1011
1012 rs780_clk_scaling_enable(rdev, false);
1013 rs780_voltage_scaling_enable(rdev, false);
1014
1015 if (level == RADEON_DPM_FORCED_LEVEL_HIGH) {
1016 if (pi->voltage_control)
1017 rs780_force_voltage(rdev, pi->max_voltage);
1018
1019 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
1020 ps->sclk_high, false, &dividers);
1021 if (ret)
1022 return ret;
1023
1024 rs780_force_fbdiv(rdev, dividers.fb_div);
1025 } else if (level == RADEON_DPM_FORCED_LEVEL_LOW) {
1026 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
1027 ps->sclk_low, false, &dividers);
1028 if (ret)
1029 return ret;
1030
1031 rs780_force_fbdiv(rdev, dividers.fb_div);
1032
1033 if (pi->voltage_control)
1034 rs780_force_voltage(rdev, pi->min_voltage);
1035 } else {
1036 if (pi->voltage_control)
1037 rs780_force_voltage(rdev, pi->max_voltage);
1038
1039 if (ps->sclk_high != ps->sclk_low) {
1040 WREG32_P(FVTHROT_FBDIV_REG1, 0, ~FORCE_FEEDBACK_DIV);
1041 rs780_clk_scaling_enable(rdev, true);
1042 }
1043
1044 if (pi->voltage_control) {
1045 rs780_voltage_scaling_enable(rdev, true);
1046 rs780_enable_voltage_scaling(rdev, rps);
1047 }
1048 }
1049
1050 rdev->pm.dpm.forced_level = level;
1051
1052 return 0;
1053 }
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