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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/seq_file.h>
26
27#include <drm/drm_pci.h>
28
29#include "atom.h"
30#include "r600_dpm.h"
31#include "radeon.h"
32#include "radeon_asic.h"
33#include "rs780_dpm.h"
34#include "rs780d.h"
35
36static struct igp_ps *rs780_get_ps(struct radeon_ps *rps)
37{
38 struct igp_ps *ps = rps->ps_priv;
39
40 return ps;
41}
42
43static struct igp_power_info *rs780_get_pi(struct radeon_device *rdev)
44{
45 struct igp_power_info *pi = rdev->pm.dpm.priv;
46
47 return pi;
48}
49
50static void rs780_get_pm_mode_parameters(struct radeon_device *rdev)
51{
52 struct igp_power_info *pi = rs780_get_pi(rdev);
53 struct radeon_mode_info *minfo = &rdev->mode_info;
54 struct drm_crtc *crtc;
55 struct radeon_crtc *radeon_crtc;
56 int i;
57
58 /* defaults */
59 pi->crtc_id = 0;
60 pi->refresh_rate = 60;
61
62 for (i = 0; i < rdev->num_crtc; i++) {
63 crtc = (struct drm_crtc *)minfo->crtcs[i];
64 if (crtc && crtc->enabled) {
65 radeon_crtc = to_radeon_crtc(crtc);
66 pi->crtc_id = radeon_crtc->crtc_id;
67 if (crtc->mode.htotal && crtc->mode.vtotal)
68 pi->refresh_rate = drm_mode_vrefresh(&crtc->mode);
69 break;
70 }
71 }
72}
73
74static void rs780_voltage_scaling_enable(struct radeon_device *rdev, bool enable);
75
76static int rs780_initialize_dpm_power_state(struct radeon_device *rdev,
77 struct radeon_ps *boot_ps)
78{
79 struct atom_clock_dividers dividers;
80 struct igp_ps *default_state = rs780_get_ps(boot_ps);
81 int i, ret;
82
83 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
84 default_state->sclk_low, false, ÷rs);
85 if (ret)
86 return ret;
87
88 r600_engine_clock_entry_set_reference_divider(rdev, 0, dividers.ref_div);
89 r600_engine_clock_entry_set_feedback_divider(rdev, 0, dividers.fb_div);
90 r600_engine_clock_entry_set_post_divider(rdev, 0, dividers.post_div);
91
92 if (dividers.enable_post_div)
93 r600_engine_clock_entry_enable_post_divider(rdev, 0, true);
94 else
95 r600_engine_clock_entry_enable_post_divider(rdev, 0, false);
96
97 r600_engine_clock_entry_set_step_time(rdev, 0, R600_SST_DFLT);
98 r600_engine_clock_entry_enable_pulse_skipping(rdev, 0, false);
99
100 r600_engine_clock_entry_enable(rdev, 0, true);
101 for (i = 1; i < R600_PM_NUMBER_OF_SCLKS; i++)
102 r600_engine_clock_entry_enable(rdev, i, false);
103
104 r600_enable_mclk_control(rdev, false);
105 r600_voltage_control_enable_pins(rdev, 0);
106
107 return 0;
108}
109
110static int rs780_initialize_dpm_parameters(struct radeon_device *rdev,
111 struct radeon_ps *boot_ps)
112{
113 int ret = 0;
114 int i;
115
116 r600_set_bsp(rdev, R600_BSU_DFLT, R600_BSP_DFLT);
117
118 r600_set_at(rdev, 0, 0, 0, 0);
119
120 r600_set_git(rdev, R600_GICST_DFLT);
121
122 for (i = 0; i < R600_PM_NUMBER_OF_TC; i++)
123 r600_set_tc(rdev, i, 0, 0);
124
125 r600_select_td(rdev, R600_TD_DFLT);
126 r600_set_vrc(rdev, 0);
127
128 r600_set_tpu(rdev, R600_TPU_DFLT);
129 r600_set_tpc(rdev, R600_TPC_DFLT);
130
131 r600_set_sstu(rdev, R600_SSTU_DFLT);
132 r600_set_sst(rdev, R600_SST_DFLT);
133
134 r600_set_fctu(rdev, R600_FCTU_DFLT);
135 r600_set_fct(rdev, R600_FCT_DFLT);
136
137 r600_set_vddc3d_oorsu(rdev, R600_VDDC3DOORSU_DFLT);
138 r600_set_vddc3d_oorphc(rdev, R600_VDDC3DOORPHC_DFLT);
139 r600_set_vddc3d_oorsdc(rdev, R600_VDDC3DOORSDC_DFLT);
140 r600_set_ctxcgtt3d_rphc(rdev, R600_CTXCGTT3DRPHC_DFLT);
141 r600_set_ctxcgtt3d_rsdc(rdev, R600_CTXCGTT3DRSDC_DFLT);
142
143 r600_vid_rt_set_vru(rdev, R600_VRU_DFLT);
144 r600_vid_rt_set_vrt(rdev, R600_VOLTAGERESPONSETIME_DFLT);
145 r600_vid_rt_set_ssu(rdev, R600_SPLLSTEPUNIT_DFLT);
146
147 ret = rs780_initialize_dpm_power_state(rdev, boot_ps);
148
149 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_LOW, 0);
150 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_MEDIUM, 0);
151 r600_power_level_set_voltage_index(rdev, R600_POWER_LEVEL_HIGH, 0);
152
153 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_LOW, 0);
154 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 0);
155 r600_power_level_set_mem_clock_index(rdev, R600_POWER_LEVEL_HIGH, 0);
156
157 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_LOW, 0);
158 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_MEDIUM, 0);
159 r600_power_level_set_eng_clock_index(rdev, R600_POWER_LEVEL_HIGH, 0);
160
161 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_LOW, R600_DISPLAY_WATERMARK_HIGH);
162 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_MEDIUM, R600_DISPLAY_WATERMARK_HIGH);
163 r600_power_level_set_watermark_id(rdev, R600_POWER_LEVEL_HIGH, R600_DISPLAY_WATERMARK_HIGH);
164
165 r600_power_level_enable(rdev, R600_POWER_LEVEL_CTXSW, false);
166 r600_power_level_enable(rdev, R600_POWER_LEVEL_HIGH, false);
167 r600_power_level_enable(rdev, R600_POWER_LEVEL_MEDIUM, false);
168 r600_power_level_enable(rdev, R600_POWER_LEVEL_LOW, true);
169
170 r600_power_level_set_enter_index(rdev, R600_POWER_LEVEL_LOW);
171
172 r600_set_vrc(rdev, RS780_CGFTV_DFLT);
173
174 return ret;
175}
176
177static void rs780_start_dpm(struct radeon_device *rdev)
178{
179 r600_enable_sclk_control(rdev, false);
180 r600_enable_mclk_control(rdev, false);
181
182 r600_dynamicpm_enable(rdev, true);
183
184 radeon_wait_for_vblank(rdev, 0);
185 radeon_wait_for_vblank(rdev, 1);
186
187 r600_enable_spll_bypass(rdev, true);
188 r600_wait_for_spll_change(rdev);
189 r600_enable_spll_bypass(rdev, false);
190 r600_wait_for_spll_change(rdev);
191
192 r600_enable_spll_bypass(rdev, true);
193 r600_wait_for_spll_change(rdev);
194 r600_enable_spll_bypass(rdev, false);
195 r600_wait_for_spll_change(rdev);
196
197 r600_enable_sclk_control(rdev, true);
198}
199
200
201static void rs780_preset_ranges_slow_clk_fbdiv_en(struct radeon_device *rdev)
202{
203 WREG32_P(FVTHROT_SLOW_CLK_FEEDBACK_DIV_REG1, RANGE_SLOW_CLK_FEEDBACK_DIV_EN,
204 ~RANGE_SLOW_CLK_FEEDBACK_DIV_EN);
205
206 WREG32_P(FVTHROT_SLOW_CLK_FEEDBACK_DIV_REG1,
207 RANGE0_SLOW_CLK_FEEDBACK_DIV(RS780_SLOWCLKFEEDBACKDIV_DFLT),
208 ~RANGE0_SLOW_CLK_FEEDBACK_DIV_MASK);
209}
210
211static void rs780_preset_starting_fbdiv(struct radeon_device *rdev)
212{
213 u32 fbdiv = (RREG32(CG_SPLL_FUNC_CNTL) & SPLL_FB_DIV_MASK) >> SPLL_FB_DIV_SHIFT;
214
215 WREG32_P(FVTHROT_FBDIV_REG1, STARTING_FEEDBACK_DIV(fbdiv),
216 ~STARTING_FEEDBACK_DIV_MASK);
217
218 WREG32_P(FVTHROT_FBDIV_REG2, FORCED_FEEDBACK_DIV(fbdiv),
219 ~FORCED_FEEDBACK_DIV_MASK);
220
221 WREG32_P(FVTHROT_FBDIV_REG1, FORCE_FEEDBACK_DIV, ~FORCE_FEEDBACK_DIV);
222}
223
224static void rs780_voltage_scaling_init(struct radeon_device *rdev)
225{
226 struct igp_power_info *pi = rs780_get_pi(rdev);
227 struct drm_device *dev = rdev->ddev;
228 u32 fv_throt_pwm_fb_div_range[3];
229 u32 fv_throt_pwm_range[4];
230
231 if (dev->pdev->device == 0x9614) {
232 fv_throt_pwm_fb_div_range[0] = RS780D_FVTHROTPWMFBDIVRANGEREG0_DFLT;
233 fv_throt_pwm_fb_div_range[1] = RS780D_FVTHROTPWMFBDIVRANGEREG1_DFLT;
234 fv_throt_pwm_fb_div_range[2] = RS780D_FVTHROTPWMFBDIVRANGEREG2_DFLT;
235 } else if ((dev->pdev->device == 0x9714) ||
236 (dev->pdev->device == 0x9715)) {
237 fv_throt_pwm_fb_div_range[0] = RS880D_FVTHROTPWMFBDIVRANGEREG0_DFLT;
238 fv_throt_pwm_fb_div_range[1] = RS880D_FVTHROTPWMFBDIVRANGEREG1_DFLT;
239 fv_throt_pwm_fb_div_range[2] = RS880D_FVTHROTPWMFBDIVRANGEREG2_DFLT;
240 } else {
241 fv_throt_pwm_fb_div_range[0] = RS780_FVTHROTPWMFBDIVRANGEREG0_DFLT;
242 fv_throt_pwm_fb_div_range[1] = RS780_FVTHROTPWMFBDIVRANGEREG1_DFLT;
243 fv_throt_pwm_fb_div_range[2] = RS780_FVTHROTPWMFBDIVRANGEREG2_DFLT;
244 }
245
246 if (pi->pwm_voltage_control) {
247 fv_throt_pwm_range[0] = pi->min_voltage;
248 fv_throt_pwm_range[1] = pi->min_voltage;
249 fv_throt_pwm_range[2] = pi->max_voltage;
250 fv_throt_pwm_range[3] = pi->max_voltage;
251 } else {
252 fv_throt_pwm_range[0] = pi->invert_pwm_required ?
253 RS780_FVTHROTPWMRANGE3_GPIO_DFLT : RS780_FVTHROTPWMRANGE0_GPIO_DFLT;
254 fv_throt_pwm_range[1] = pi->invert_pwm_required ?
255 RS780_FVTHROTPWMRANGE2_GPIO_DFLT : RS780_FVTHROTPWMRANGE1_GPIO_DFLT;
256 fv_throt_pwm_range[2] = pi->invert_pwm_required ?
257 RS780_FVTHROTPWMRANGE1_GPIO_DFLT : RS780_FVTHROTPWMRANGE2_GPIO_DFLT;
258 fv_throt_pwm_range[3] = pi->invert_pwm_required ?
259 RS780_FVTHROTPWMRANGE0_GPIO_DFLT : RS780_FVTHROTPWMRANGE3_GPIO_DFLT;
260 }
261
262 WREG32_P(FVTHROT_PWM_CTRL_REG0,
263 STARTING_PWM_HIGHTIME(pi->max_voltage),
264 ~STARTING_PWM_HIGHTIME_MASK);
265
266 WREG32_P(FVTHROT_PWM_CTRL_REG0,
267 NUMBER_OF_CYCLES_IN_PERIOD(pi->num_of_cycles_in_period),
268 ~NUMBER_OF_CYCLES_IN_PERIOD_MASK);
269
270 WREG32_P(FVTHROT_PWM_CTRL_REG0, FORCE_STARTING_PWM_HIGHTIME,
271 ~FORCE_STARTING_PWM_HIGHTIME);
272
273 if (pi->invert_pwm_required)
274 WREG32_P(FVTHROT_PWM_CTRL_REG0, INVERT_PWM_WAVEFORM, ~INVERT_PWM_WAVEFORM);
275 else
276 WREG32_P(FVTHROT_PWM_CTRL_REG0, 0, ~INVERT_PWM_WAVEFORM);
277
278 rs780_voltage_scaling_enable(rdev, true);
279
280 WREG32(FVTHROT_PWM_CTRL_REG1,
281 (MIN_PWM_HIGHTIME(pi->min_voltage) |
282 MAX_PWM_HIGHTIME(pi->max_voltage)));
283
284 WREG32(FVTHROT_PWM_US_REG0, RS780_FVTHROTPWMUSREG0_DFLT);
285 WREG32(FVTHROT_PWM_US_REG1, RS780_FVTHROTPWMUSREG1_DFLT);
286 WREG32(FVTHROT_PWM_DS_REG0, RS780_FVTHROTPWMDSREG0_DFLT);
287 WREG32(FVTHROT_PWM_DS_REG1, RS780_FVTHROTPWMDSREG1_DFLT);
288
289 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1,
290 RANGE0_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[0]),
291 ~RANGE0_PWM_FEEDBACK_DIV_MASK);
292
293 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG2,
294 (RANGE1_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[1]) |
295 RANGE2_PWM_FEEDBACK_DIV(fv_throt_pwm_fb_div_range[2])));
296
297 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG3,
298 (RANGE0_PWM(fv_throt_pwm_range[1]) |
299 RANGE1_PWM(fv_throt_pwm_range[2])));
300 WREG32(FVTHROT_PWM_FEEDBACK_DIV_REG4,
301 (RANGE2_PWM(fv_throt_pwm_range[1]) |
302 RANGE3_PWM(fv_throt_pwm_range[2])));
303}
304
305static void rs780_clk_scaling_enable(struct radeon_device *rdev, bool enable)
306{
307 if (enable)
308 WREG32_P(FVTHROT_CNTRL_REG, ENABLE_FV_THROT | ENABLE_FV_UPDATE,
309 ~(ENABLE_FV_THROT | ENABLE_FV_UPDATE));
310 else
311 WREG32_P(FVTHROT_CNTRL_REG, 0,
312 ~(ENABLE_FV_THROT | ENABLE_FV_UPDATE));
313}
314
315static void rs780_voltage_scaling_enable(struct radeon_device *rdev, bool enable)
316{
317 if (enable)
318 WREG32_P(FVTHROT_CNTRL_REG, ENABLE_FV_THROT_IO, ~ENABLE_FV_THROT_IO);
319 else
320 WREG32_P(FVTHROT_CNTRL_REG, 0, ~ENABLE_FV_THROT_IO);
321}
322
323static void rs780_set_engine_clock_wfc(struct radeon_device *rdev)
324{
325 WREG32(FVTHROT_UTC0, RS780_FVTHROTUTC0_DFLT);
326 WREG32(FVTHROT_UTC1, RS780_FVTHROTUTC1_DFLT);
327 WREG32(FVTHROT_UTC2, RS780_FVTHROTUTC2_DFLT);
328 WREG32(FVTHROT_UTC3, RS780_FVTHROTUTC3_DFLT);
329 WREG32(FVTHROT_UTC4, RS780_FVTHROTUTC4_DFLT);
330
331 WREG32(FVTHROT_DTC0, RS780_FVTHROTDTC0_DFLT);
332 WREG32(FVTHROT_DTC1, RS780_FVTHROTDTC1_DFLT);
333 WREG32(FVTHROT_DTC2, RS780_FVTHROTDTC2_DFLT);
334 WREG32(FVTHROT_DTC3, RS780_FVTHROTDTC3_DFLT);
335 WREG32(FVTHROT_DTC4, RS780_FVTHROTDTC4_DFLT);
336}
337
338static void rs780_set_engine_clock_sc(struct radeon_device *rdev)
339{
340 WREG32_P(FVTHROT_FBDIV_REG2,
341 FB_DIV_TIMER_VAL(RS780_FBDIVTIMERVAL_DFLT),
342 ~FB_DIV_TIMER_VAL_MASK);
343
344 WREG32_P(FVTHROT_CNTRL_REG,
345 REFRESH_RATE_DIVISOR(0) | MINIMUM_CIP(0xf),
346 ~(REFRESH_RATE_DIVISOR_MASK | MINIMUM_CIP_MASK));
347}
348
349static void rs780_set_engine_clock_tdc(struct radeon_device *rdev)
350{
351 WREG32_P(FVTHROT_CNTRL_REG, 0, ~(FORCE_TREND_SEL | TREND_SEL_MODE));
352}
353
354static void rs780_set_engine_clock_ssc(struct radeon_device *rdev)
355{
356 WREG32(FVTHROT_FB_US_REG0, RS780_FVTHROTFBUSREG0_DFLT);
357 WREG32(FVTHROT_FB_US_REG1, RS780_FVTHROTFBUSREG1_DFLT);
358 WREG32(FVTHROT_FB_DS_REG0, RS780_FVTHROTFBDSREG0_DFLT);
359 WREG32(FVTHROT_FB_DS_REG1, RS780_FVTHROTFBDSREG1_DFLT);
360
361 WREG32_P(FVTHROT_FBDIV_REG1, MAX_FEEDBACK_STEP(1), ~MAX_FEEDBACK_STEP_MASK);
362}
363
364static void rs780_program_at(struct radeon_device *rdev)
365{
366 struct igp_power_info *pi = rs780_get_pi(rdev);
367
368 WREG32(FVTHROT_TARGET_REG, 30000000 / pi->refresh_rate);
369 WREG32(FVTHROT_CB1, 1000000 * 5 / pi->refresh_rate);
370 WREG32(FVTHROT_CB2, 1000000 * 10 / pi->refresh_rate);
371 WREG32(FVTHROT_CB3, 1000000 * 30 / pi->refresh_rate);
372 WREG32(FVTHROT_CB4, 1000000 * 50 / pi->refresh_rate);
373}
374
375static void rs780_disable_vbios_powersaving(struct radeon_device *rdev)
376{
377 WREG32_P(CG_INTGFX_MISC, 0, ~0xFFF00000);
378}
379
380static void rs780_force_voltage(struct radeon_device *rdev, u16 voltage)
381{
382 struct igp_ps *current_state = rs780_get_ps(rdev->pm.dpm.current_ps);
383
384 if ((current_state->max_voltage == RS780_VDDC_LEVEL_HIGH) &&
385 (current_state->min_voltage == RS780_VDDC_LEVEL_HIGH))
386 return;
387
388 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL);
389
390 udelay(1);
391
392 WREG32_P(FVTHROT_PWM_CTRL_REG0,
393 STARTING_PWM_HIGHTIME(voltage),
394 ~STARTING_PWM_HIGHTIME_MASK);
395
396 WREG32_P(FVTHROT_PWM_CTRL_REG0,
397 FORCE_STARTING_PWM_HIGHTIME, ~FORCE_STARTING_PWM_HIGHTIME);
398
399 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1, 0,
400 ~RANGE_PWM_FEEDBACK_DIV_EN);
401
402 udelay(1);
403
404 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL);
405}
406
407static void rs780_force_fbdiv(struct radeon_device *rdev, u32 fb_div)
408{
409 struct igp_ps *current_state = rs780_get_ps(rdev->pm.dpm.current_ps);
410
411 if (current_state->sclk_low == current_state->sclk_high)
412 return;
413
414 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL);
415
416 WREG32_P(FVTHROT_FBDIV_REG2, FORCED_FEEDBACK_DIV(fb_div),
417 ~FORCED_FEEDBACK_DIV_MASK);
418 WREG32_P(FVTHROT_FBDIV_REG1, STARTING_FEEDBACK_DIV(fb_div),
419 ~STARTING_FEEDBACK_DIV_MASK);
420 WREG32_P(FVTHROT_FBDIV_REG1, FORCE_FEEDBACK_DIV, ~FORCE_FEEDBACK_DIV);
421
422 udelay(100);
423
424 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL);
425}
426
427static int rs780_set_engine_clock_scaling(struct radeon_device *rdev,
428 struct radeon_ps *new_ps,
429 struct radeon_ps *old_ps)
430{
431 struct atom_clock_dividers min_dividers, max_dividers, current_max_dividers;
432 struct igp_ps *new_state = rs780_get_ps(new_ps);
433 struct igp_ps *old_state = rs780_get_ps(old_ps);
434 int ret;
435
436 if ((new_state->sclk_high == old_state->sclk_high) &&
437 (new_state->sclk_low == old_state->sclk_low))
438 return 0;
439
440 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
441 new_state->sclk_low, false, &min_dividers);
442 if (ret)
443 return ret;
444
445 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
446 new_state->sclk_high, false, &max_dividers);
447 if (ret)
448 return ret;
449
450 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
451 old_state->sclk_high, false, ¤t_max_dividers);
452 if (ret)
453 return ret;
454
455 if ((min_dividers.ref_div != max_dividers.ref_div) ||
456 (min_dividers.post_div != max_dividers.post_div) ||
457 (max_dividers.ref_div != current_max_dividers.ref_div) ||
458 (max_dividers.post_div != current_max_dividers.post_div))
459 return -EINVAL;
460
461 rs780_force_fbdiv(rdev, max_dividers.fb_div);
462
463 if (max_dividers.fb_div > min_dividers.fb_div) {
464 WREG32_P(FVTHROT_FBDIV_REG0,
465 MIN_FEEDBACK_DIV(min_dividers.fb_div) |
466 MAX_FEEDBACK_DIV(max_dividers.fb_div),
467 ~(MIN_FEEDBACK_DIV_MASK | MAX_FEEDBACK_DIV_MASK));
468
469 WREG32_P(FVTHROT_FBDIV_REG1, 0, ~FORCE_FEEDBACK_DIV);
470 }
471
472 return 0;
473}
474
475static void rs780_set_engine_clock_spc(struct radeon_device *rdev,
476 struct radeon_ps *new_ps,
477 struct radeon_ps *old_ps)
478{
479 struct igp_ps *new_state = rs780_get_ps(new_ps);
480 struct igp_ps *old_state = rs780_get_ps(old_ps);
481 struct igp_power_info *pi = rs780_get_pi(rdev);
482
483 if ((new_state->sclk_high == old_state->sclk_high) &&
484 (new_state->sclk_low == old_state->sclk_low))
485 return;
486
487 if (pi->crtc_id == 0)
488 WREG32_P(CG_INTGFX_MISC, 0, ~FVTHROT_VBLANK_SEL);
489 else
490 WREG32_P(CG_INTGFX_MISC, FVTHROT_VBLANK_SEL, ~FVTHROT_VBLANK_SEL);
491
492}
493
494static void rs780_activate_engine_clk_scaling(struct radeon_device *rdev,
495 struct radeon_ps *new_ps,
496 struct radeon_ps *old_ps)
497{
498 struct igp_ps *new_state = rs780_get_ps(new_ps);
499 struct igp_ps *old_state = rs780_get_ps(old_ps);
500
501 if ((new_state->sclk_high == old_state->sclk_high) &&
502 (new_state->sclk_low == old_state->sclk_low))
503 return;
504
505 if (new_state->sclk_high == new_state->sclk_low)
506 return;
507
508 rs780_clk_scaling_enable(rdev, true);
509}
510
511static u32 rs780_get_voltage_for_vddc_level(struct radeon_device *rdev,
512 enum rs780_vddc_level vddc)
513{
514 struct igp_power_info *pi = rs780_get_pi(rdev);
515
516 if (vddc == RS780_VDDC_LEVEL_HIGH)
517 return pi->max_voltage;
518 else if (vddc == RS780_VDDC_LEVEL_LOW)
519 return pi->min_voltage;
520 else
521 return pi->max_voltage;
522}
523
524static void rs780_enable_voltage_scaling(struct radeon_device *rdev,
525 struct radeon_ps *new_ps)
526{
527 struct igp_ps *new_state = rs780_get_ps(new_ps);
528 struct igp_power_info *pi = rs780_get_pi(rdev);
529 enum rs780_vddc_level vddc_high, vddc_low;
530
531 udelay(100);
532
533 if ((new_state->max_voltage == RS780_VDDC_LEVEL_HIGH) &&
534 (new_state->min_voltage == RS780_VDDC_LEVEL_HIGH))
535 return;
536
537 vddc_high = rs780_get_voltage_for_vddc_level(rdev,
538 new_state->max_voltage);
539 vddc_low = rs780_get_voltage_for_vddc_level(rdev,
540 new_state->min_voltage);
541
542 WREG32_P(GFX_MACRO_BYPASS_CNTL, SPLL_BYPASS_CNTL, ~SPLL_BYPASS_CNTL);
543
544 udelay(1);
545 if (vddc_high > vddc_low) {
546 WREG32_P(FVTHROT_PWM_FEEDBACK_DIV_REG1,
547 RANGE_PWM_FEEDBACK_DIV_EN, ~RANGE_PWM_FEEDBACK_DIV_EN);
548
549 WREG32_P(FVTHROT_PWM_CTRL_REG0, 0, ~FORCE_STARTING_PWM_HIGHTIME);
550 } else if (vddc_high == vddc_low) {
551 if (pi->max_voltage != vddc_high) {
552 WREG32_P(FVTHROT_PWM_CTRL_REG0,
553 STARTING_PWM_HIGHTIME(vddc_high),
554 ~STARTING_PWM_HIGHTIME_MASK);
555
556 WREG32_P(FVTHROT_PWM_CTRL_REG0,
557 FORCE_STARTING_PWM_HIGHTIME,
558 ~FORCE_STARTING_PWM_HIGHTIME);
559 }
560 }
561
562 WREG32_P(GFX_MACRO_BYPASS_CNTL, 0, ~SPLL_BYPASS_CNTL);
563}
564
565static void rs780_set_uvd_clock_before_set_eng_clock(struct radeon_device *rdev,
566 struct radeon_ps *new_ps,
567 struct radeon_ps *old_ps)
568{
569 struct igp_ps *new_state = rs780_get_ps(new_ps);
570 struct igp_ps *current_state = rs780_get_ps(old_ps);
571
572 if ((new_ps->vclk == old_ps->vclk) &&
573 (new_ps->dclk == old_ps->dclk))
574 return;
575
576 if (new_state->sclk_high >= current_state->sclk_high)
577 return;
578
579 radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk);
580}
581
582static void rs780_set_uvd_clock_after_set_eng_clock(struct radeon_device *rdev,
583 struct radeon_ps *new_ps,
584 struct radeon_ps *old_ps)
585{
586 struct igp_ps *new_state = rs780_get_ps(new_ps);
587 struct igp_ps *current_state = rs780_get_ps(old_ps);
588
589 if ((new_ps->vclk == old_ps->vclk) &&
590 (new_ps->dclk == old_ps->dclk))
591 return;
592
593 if (new_state->sclk_high < current_state->sclk_high)
594 return;
595
596 radeon_set_uvd_clocks(rdev, new_ps->vclk, new_ps->dclk);
597}
598
599int rs780_dpm_enable(struct radeon_device *rdev)
600{
601 struct igp_power_info *pi = rs780_get_pi(rdev);
602 struct radeon_ps *boot_ps = rdev->pm.dpm.boot_ps;
603 int ret;
604
605 rs780_get_pm_mode_parameters(rdev);
606 rs780_disable_vbios_powersaving(rdev);
607
608 if (r600_dynamicpm_enabled(rdev))
609 return -EINVAL;
610 ret = rs780_initialize_dpm_parameters(rdev, boot_ps);
611 if (ret)
612 return ret;
613 rs780_start_dpm(rdev);
614
615 rs780_preset_ranges_slow_clk_fbdiv_en(rdev);
616 rs780_preset_starting_fbdiv(rdev);
617 if (pi->voltage_control)
618 rs780_voltage_scaling_init(rdev);
619 rs780_clk_scaling_enable(rdev, true);
620 rs780_set_engine_clock_sc(rdev);
621 rs780_set_engine_clock_wfc(rdev);
622 rs780_program_at(rdev);
623 rs780_set_engine_clock_tdc(rdev);
624 rs780_set_engine_clock_ssc(rdev);
625
626 if (pi->gfx_clock_gating)
627 r600_gfx_clockgating_enable(rdev, true);
628
629 return 0;
630}
631
632void rs780_dpm_disable(struct radeon_device *rdev)
633{
634 struct igp_power_info *pi = rs780_get_pi(rdev);
635
636 r600_dynamicpm_enable(rdev, false);
637
638 rs780_clk_scaling_enable(rdev, false);
639 rs780_voltage_scaling_enable(rdev, false);
640
641 if (pi->gfx_clock_gating)
642 r600_gfx_clockgating_enable(rdev, false);
643
644 if (rdev->irq.installed &&
645 (rdev->pm.int_thermal_type == THERMAL_TYPE_RV6XX)) {
646 rdev->irq.dpm_thermal = false;
647 radeon_irq_set(rdev);
648 }
649}
650
651int rs780_dpm_set_power_state(struct radeon_device *rdev)
652{
653 struct igp_power_info *pi = rs780_get_pi(rdev);
654 struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps;
655 struct radeon_ps *old_ps = rdev->pm.dpm.current_ps;
656 int ret;
657
658 rs780_get_pm_mode_parameters(rdev);
659
660 rs780_set_uvd_clock_before_set_eng_clock(rdev, new_ps, old_ps);
661
662 if (pi->voltage_control) {
663 rs780_force_voltage(rdev, pi->max_voltage);
664 mdelay(5);
665 }
666
667 ret = rs780_set_engine_clock_scaling(rdev, new_ps, old_ps);
668 if (ret)
669 return ret;
670 rs780_set_engine_clock_spc(rdev, new_ps, old_ps);
671
672 rs780_activate_engine_clk_scaling(rdev, new_ps, old_ps);
673
674 if (pi->voltage_control)
675 rs780_enable_voltage_scaling(rdev, new_ps);
676
677 rs780_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps);
678
679 return 0;
680}
681
682void rs780_dpm_setup_asic(struct radeon_device *rdev)
683{
684
685}
686
687void rs780_dpm_display_configuration_changed(struct radeon_device *rdev)
688{
689 rs780_get_pm_mode_parameters(rdev);
690 rs780_program_at(rdev);
691}
692
693union igp_info {
694 struct _ATOM_INTEGRATED_SYSTEM_INFO info;
695 struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_2;
696};
697
698union power_info {
699 struct _ATOM_POWERPLAY_INFO info;
700 struct _ATOM_POWERPLAY_INFO_V2 info_2;
701 struct _ATOM_POWERPLAY_INFO_V3 info_3;
702 struct _ATOM_PPLIB_POWERPLAYTABLE pplib;
703 struct _ATOM_PPLIB_POWERPLAYTABLE2 pplib2;
704 struct _ATOM_PPLIB_POWERPLAYTABLE3 pplib3;
705};
706
707union pplib_clock_info {
708 struct _ATOM_PPLIB_R600_CLOCK_INFO r600;
709 struct _ATOM_PPLIB_RS780_CLOCK_INFO rs780;
710 struct _ATOM_PPLIB_EVERGREEN_CLOCK_INFO evergreen;
711 struct _ATOM_PPLIB_SUMO_CLOCK_INFO sumo;
712};
713
714union pplib_power_state {
715 struct _ATOM_PPLIB_STATE v1;
716 struct _ATOM_PPLIB_STATE_V2 v2;
717};
718
719static void rs780_parse_pplib_non_clock_info(struct radeon_device *rdev,
720 struct radeon_ps *rps,
721 struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info,
722 u8 table_rev)
723{
724 rps->caps = le32_to_cpu(non_clock_info->ulCapsAndSettings);
725 rps->class = le16_to_cpu(non_clock_info->usClassification);
726 rps->class2 = le16_to_cpu(non_clock_info->usClassification2);
727
728 if (ATOM_PPLIB_NONCLOCKINFO_VER1 < table_rev) {
729 rps->vclk = le32_to_cpu(non_clock_info->ulVCLK);
730 rps->dclk = le32_to_cpu(non_clock_info->ulDCLK);
731 } else {
732 rps->vclk = 0;
733 rps->dclk = 0;
734 }
735
736 if (r600_is_uvd_state(rps->class, rps->class2)) {
737 if ((rps->vclk == 0) || (rps->dclk == 0)) {
738 rps->vclk = RS780_DEFAULT_VCLK_FREQ;
739 rps->dclk = RS780_DEFAULT_DCLK_FREQ;
740 }
741 }
742
743 if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT)
744 rdev->pm.dpm.boot_ps = rps;
745 if (rps->class & ATOM_PPLIB_CLASSIFICATION_UVDSTATE)
746 rdev->pm.dpm.uvd_ps = rps;
747}
748
749static void rs780_parse_pplib_clock_info(struct radeon_device *rdev,
750 struct radeon_ps *rps,
751 union pplib_clock_info *clock_info)
752{
753 struct igp_ps *ps = rs780_get_ps(rps);
754 u32 sclk;
755
756 sclk = le16_to_cpu(clock_info->rs780.usLowEngineClockLow);
757 sclk |= clock_info->rs780.ucLowEngineClockHigh << 16;
758 ps->sclk_low = sclk;
759 sclk = le16_to_cpu(clock_info->rs780.usHighEngineClockLow);
760 sclk |= clock_info->rs780.ucHighEngineClockHigh << 16;
761 ps->sclk_high = sclk;
762 switch (le16_to_cpu(clock_info->rs780.usVDDC)) {
763 case ATOM_PPLIB_RS780_VOLTAGE_NONE:
764 default:
765 ps->min_voltage = RS780_VDDC_LEVEL_UNKNOWN;
766 ps->max_voltage = RS780_VDDC_LEVEL_UNKNOWN;
767 break;
768 case ATOM_PPLIB_RS780_VOLTAGE_LOW:
769 ps->min_voltage = RS780_VDDC_LEVEL_LOW;
770 ps->max_voltage = RS780_VDDC_LEVEL_LOW;
771 break;
772 case ATOM_PPLIB_RS780_VOLTAGE_HIGH:
773 ps->min_voltage = RS780_VDDC_LEVEL_HIGH;
774 ps->max_voltage = RS780_VDDC_LEVEL_HIGH;
775 break;
776 case ATOM_PPLIB_RS780_VOLTAGE_VARIABLE:
777 ps->min_voltage = RS780_VDDC_LEVEL_LOW;
778 ps->max_voltage = RS780_VDDC_LEVEL_HIGH;
779 break;
780 }
781 ps->flags = le32_to_cpu(clock_info->rs780.ulFlags);
782
783 if (rps->class & ATOM_PPLIB_CLASSIFICATION_BOOT) {
784 ps->sclk_low = rdev->clock.default_sclk;
785 ps->sclk_high = rdev->clock.default_sclk;
786 ps->min_voltage = RS780_VDDC_LEVEL_HIGH;
787 ps->max_voltage = RS780_VDDC_LEVEL_HIGH;
788 }
789}
790
791static int rs780_parse_power_table(struct radeon_device *rdev)
792{
793 struct radeon_mode_info *mode_info = &rdev->mode_info;
794 struct _ATOM_PPLIB_NONCLOCK_INFO *non_clock_info;
795 union pplib_power_state *power_state;
796 int i;
797 union pplib_clock_info *clock_info;
798 union power_info *power_info;
799 int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo);
800 u16 data_offset;
801 u8 frev, crev;
802 struct igp_ps *ps;
803
804 if (!atom_parse_data_header(mode_info->atom_context, index, NULL,
805 &frev, &crev, &data_offset))
806 return -EINVAL;
807 power_info = (union power_info *)(mode_info->atom_context->bios + data_offset);
808
809 rdev->pm.dpm.ps = kcalloc(power_info->pplib.ucNumStates,
810 sizeof(struct radeon_ps),
811 GFP_KERNEL);
812 if (!rdev->pm.dpm.ps)
813 return -ENOMEM;
814
815 for (i = 0; i < power_info->pplib.ucNumStates; i++) {
816 power_state = (union pplib_power_state *)
817 (mode_info->atom_context->bios + data_offset +
818 le16_to_cpu(power_info->pplib.usStateArrayOffset) +
819 i * power_info->pplib.ucStateEntrySize);
820 non_clock_info = (struct _ATOM_PPLIB_NONCLOCK_INFO *)
821 (mode_info->atom_context->bios + data_offset +
822 le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset) +
823 (power_state->v1.ucNonClockStateIndex *
824 power_info->pplib.ucNonClockSize));
825 if (power_info->pplib.ucStateEntrySize - 1) {
826 clock_info = (union pplib_clock_info *)
827 (mode_info->atom_context->bios + data_offset +
828 le16_to_cpu(power_info->pplib.usClockInfoArrayOffset) +
829 (power_state->v1.ucClockStateIndices[0] *
830 power_info->pplib.ucClockInfoSize));
831 ps = kzalloc(sizeof(struct igp_ps), GFP_KERNEL);
832 if (ps == NULL) {
833 kfree(rdev->pm.dpm.ps);
834 return -ENOMEM;
835 }
836 rdev->pm.dpm.ps[i].ps_priv = ps;
837 rs780_parse_pplib_non_clock_info(rdev, &rdev->pm.dpm.ps[i],
838 non_clock_info,
839 power_info->pplib.ucNonClockSize);
840 rs780_parse_pplib_clock_info(rdev,
841 &rdev->pm.dpm.ps[i],
842 clock_info);
843 }
844 }
845 rdev->pm.dpm.num_ps = power_info->pplib.ucNumStates;
846 return 0;
847}
848
849int rs780_dpm_init(struct radeon_device *rdev)
850{
851 struct igp_power_info *pi;
852 int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo);
853 union igp_info *info;
854 u16 data_offset;
855 u8 frev, crev;
856 int ret;
857
858 pi = kzalloc(sizeof(struct igp_power_info), GFP_KERNEL);
859 if (pi == NULL)
860 return -ENOMEM;
861 rdev->pm.dpm.priv = pi;
862
863 ret = r600_get_platform_caps(rdev);
864 if (ret)
865 return ret;
866
867 ret = rs780_parse_power_table(rdev);
868 if (ret)
869 return ret;
870
871 pi->voltage_control = false;
872 pi->gfx_clock_gating = true;
873
874 if (atom_parse_data_header(rdev->mode_info.atom_context, index, NULL,
875 &frev, &crev, &data_offset)) {
876 info = (union igp_info *)(rdev->mode_info.atom_context->bios + data_offset);
877
878 /* Get various system informations from bios */
879 switch (crev) {
880 case 1:
881 pi->num_of_cycles_in_period =
882 info->info.ucNumberOfCyclesInPeriod;
883 pi->num_of_cycles_in_period |=
884 info->info.ucNumberOfCyclesInPeriodHi << 8;
885 pi->invert_pwm_required =
886 (pi->num_of_cycles_in_period & 0x8000) ? true : false;
887 pi->boot_voltage = info->info.ucStartingPWM_HighTime;
888 pi->max_voltage = info->info.ucMaxNBVoltage;
889 pi->max_voltage |= info->info.ucMaxNBVoltageHigh << 8;
890 pi->min_voltage = info->info.ucMinNBVoltage;
891 pi->min_voltage |= info->info.ucMinNBVoltageHigh << 8;
892 pi->inter_voltage_low =
893 le16_to_cpu(info->info.usInterNBVoltageLow);
894 pi->inter_voltage_high =
895 le16_to_cpu(info->info.usInterNBVoltageHigh);
896 pi->voltage_control = true;
897 pi->bootup_uma_clk = info->info.usK8MemoryClock * 100;
898 break;
899 case 2:
900 pi->num_of_cycles_in_period =
901 le16_to_cpu(info->info_2.usNumberOfCyclesInPeriod);
902 pi->invert_pwm_required =
903 (pi->num_of_cycles_in_period & 0x8000) ? true : false;
904 pi->boot_voltage =
905 le16_to_cpu(info->info_2.usBootUpNBVoltage);
906 pi->max_voltage =
907 le16_to_cpu(info->info_2.usMaxNBVoltage);
908 pi->min_voltage =
909 le16_to_cpu(info->info_2.usMinNBVoltage);
910 pi->system_config =
911 le32_to_cpu(info->info_2.ulSystemConfig);
912 pi->pwm_voltage_control =
913 (pi->system_config & 0x4) ? true : false;
914 pi->voltage_control = true;
915 pi->bootup_uma_clk = le32_to_cpu(info->info_2.ulBootUpUMAClock);
916 break;
917 default:
918 DRM_ERROR("No integrated system info for your GPU\n");
919 return -EINVAL;
920 }
921 if (pi->min_voltage > pi->max_voltage)
922 pi->voltage_control = false;
923 if (pi->pwm_voltage_control) {
924 if ((pi->num_of_cycles_in_period == 0) ||
925 (pi->max_voltage == 0) ||
926 (pi->min_voltage == 0))
927 pi->voltage_control = false;
928 } else {
929 if ((pi->num_of_cycles_in_period == 0) ||
930 (pi->max_voltage == 0))
931 pi->voltage_control = false;
932 }
933
934 return 0;
935 }
936 radeon_dpm_fini(rdev);
937 return -EINVAL;
938}
939
940void rs780_dpm_print_power_state(struct radeon_device *rdev,
941 struct radeon_ps *rps)
942{
943 struct igp_ps *ps = rs780_get_ps(rps);
944
945 r600_dpm_print_class_info(rps->class, rps->class2);
946 r600_dpm_print_cap_info(rps->caps);
947 printk("\tuvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk);
948 printk("\t\tpower level 0 sclk: %u vddc_index: %d\n",
949 ps->sclk_low, ps->min_voltage);
950 printk("\t\tpower level 1 sclk: %u vddc_index: %d\n",
951 ps->sclk_high, ps->max_voltage);
952 r600_dpm_print_ps_status(rdev, rps);
953}
954
955void rs780_dpm_fini(struct radeon_device *rdev)
956{
957 int i;
958
959 for (i = 0; i < rdev->pm.dpm.num_ps; i++) {
960 kfree(rdev->pm.dpm.ps[i].ps_priv);
961 }
962 kfree(rdev->pm.dpm.ps);
963 kfree(rdev->pm.dpm.priv);
964}
965
966u32 rs780_dpm_get_sclk(struct radeon_device *rdev, bool low)
967{
968 struct igp_ps *requested_state = rs780_get_ps(rdev->pm.dpm.requested_ps);
969
970 if (low)
971 return requested_state->sclk_low;
972 else
973 return requested_state->sclk_high;
974}
975
976u32 rs780_dpm_get_mclk(struct radeon_device *rdev, bool low)
977{
978 struct igp_power_info *pi = rs780_get_pi(rdev);
979
980 return pi->bootup_uma_clk;
981}
982
983void rs780_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
984 struct seq_file *m)
985{
986 struct radeon_ps *rps = rdev->pm.dpm.current_ps;
987 struct igp_ps *ps = rs780_get_ps(rps);
988 u32 current_fb_div = RREG32(FVTHROT_STATUS_REG0) & CURRENT_FEEDBACK_DIV_MASK;
989 u32 func_cntl = RREG32(CG_SPLL_FUNC_CNTL);
990 u32 ref_div = ((func_cntl & SPLL_REF_DIV_MASK) >> SPLL_REF_DIV_SHIFT) + 1;
991 u32 post_div = ((func_cntl & SPLL_SW_HILEN_MASK) >> SPLL_SW_HILEN_SHIFT) + 1 +
992 ((func_cntl & SPLL_SW_LOLEN_MASK) >> SPLL_SW_LOLEN_SHIFT) + 1;
993 u32 sclk = (rdev->clock.spll.reference_freq * current_fb_div) /
994 (post_div * ref_div);
995
996 seq_printf(m, "uvd vclk: %d dclk: %d\n", rps->vclk, rps->dclk);
997
998 /* guess based on the current sclk */
999 if (sclk < (ps->sclk_low + 500))
1000 seq_printf(m, "power level 0 sclk: %u vddc_index: %d\n",
1001 ps->sclk_low, ps->min_voltage);
1002 else
1003 seq_printf(m, "power level 1 sclk: %u vddc_index: %d\n",
1004 ps->sclk_high, ps->max_voltage);
1005}
1006
1007/* get the current sclk in 10 khz units */
1008u32 rs780_dpm_get_current_sclk(struct radeon_device *rdev)
1009{
1010 u32 current_fb_div = RREG32(FVTHROT_STATUS_REG0) & CURRENT_FEEDBACK_DIV_MASK;
1011 u32 func_cntl = RREG32(CG_SPLL_FUNC_CNTL);
1012 u32 ref_div = ((func_cntl & SPLL_REF_DIV_MASK) >> SPLL_REF_DIV_SHIFT) + 1;
1013 u32 post_div = ((func_cntl & SPLL_SW_HILEN_MASK) >> SPLL_SW_HILEN_SHIFT) + 1 +
1014 ((func_cntl & SPLL_SW_LOLEN_MASK) >> SPLL_SW_LOLEN_SHIFT) + 1;
1015 u32 sclk = (rdev->clock.spll.reference_freq * current_fb_div) /
1016 (post_div * ref_div);
1017
1018 return sclk;
1019}
1020
1021/* get the current mclk in 10 khz units */
1022u32 rs780_dpm_get_current_mclk(struct radeon_device *rdev)
1023{
1024 struct igp_power_info *pi = rs780_get_pi(rdev);
1025
1026 return pi->bootup_uma_clk;
1027}
1028
1029int rs780_dpm_force_performance_level(struct radeon_device *rdev,
1030 enum radeon_dpm_forced_level level)
1031{
1032 struct igp_power_info *pi = rs780_get_pi(rdev);
1033 struct radeon_ps *rps = rdev->pm.dpm.current_ps;
1034 struct igp_ps *ps = rs780_get_ps(rps);
1035 struct atom_clock_dividers dividers;
1036 int ret;
1037
1038 rs780_clk_scaling_enable(rdev, false);
1039 rs780_voltage_scaling_enable(rdev, false);
1040
1041 if (level == RADEON_DPM_FORCED_LEVEL_HIGH) {
1042 if (pi->voltage_control)
1043 rs780_force_voltage(rdev, pi->max_voltage);
1044
1045 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
1046 ps->sclk_high, false, ÷rs);
1047 if (ret)
1048 return ret;
1049
1050 rs780_force_fbdiv(rdev, dividers.fb_div);
1051 } else if (level == RADEON_DPM_FORCED_LEVEL_LOW) {
1052 ret = radeon_atom_get_clock_dividers(rdev, COMPUTE_ENGINE_PLL_PARAM,
1053 ps->sclk_low, false, ÷rs);
1054 if (ret)
1055 return ret;
1056
1057 rs780_force_fbdiv(rdev, dividers.fb_div);
1058
1059 if (pi->voltage_control)
1060 rs780_force_voltage(rdev, pi->min_voltage);
1061 } else {
1062 if (pi->voltage_control)
1063 rs780_force_voltage(rdev, pi->max_voltage);
1064
1065 if (ps->sclk_high != ps->sclk_low) {
1066 WREG32_P(FVTHROT_FBDIV_REG1, 0, ~FORCE_FEEDBACK_DIV);
1067 rs780_clk_scaling_enable(rdev, true);
1068 }
1069
1070 if (pi->voltage_control) {
1071 rs780_voltage_scaling_enable(rdev, true);
1072 rs780_enable_voltage_scaling(rdev, rps);
1073 }
1074 }
1075
1076 rdev->pm.dpm.forced_level = level;
1077
1078 return 0;
1079}