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1/*
2 * Copyright 2015 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: AMD
23 *
24 */
25
26#include <linux/irqdomain.h>
27#include <linux/pci.h>
28#include <linux/pm_domain.h>
29#include <linux/platform_device.h>
30#include <sound/designware_i2s.h>
31#include <sound/pcm.h>
32#include <linux/acpi.h>
33#include <linux/dmi.h>
34
35#include "amdgpu.h"
36#include "atom.h"
37#include "amdgpu_acp.h"
38
39#include "acp_gfx_if.h"
40
41#define ST_JADEITE 1
42#define ACP_TILE_ON_MASK 0x03
43#define ACP_TILE_OFF_MASK 0x02
44#define ACP_TILE_ON_RETAIN_REG_MASK 0x1f
45#define ACP_TILE_OFF_RETAIN_REG_MASK 0x20
46
47#define ACP_TILE_P1_MASK 0x3e
48#define ACP_TILE_P2_MASK 0x3d
49#define ACP_TILE_DSP0_MASK 0x3b
50#define ACP_TILE_DSP1_MASK 0x37
51
52#define ACP_TILE_DSP2_MASK 0x2f
53
54#define ACP_DMA_REGS_END 0x146c0
55#define ACP_I2S_PLAY_REGS_START 0x14840
56#define ACP_I2S_PLAY_REGS_END 0x148b4
57#define ACP_I2S_CAP_REGS_START 0x148b8
58#define ACP_I2S_CAP_REGS_END 0x1496c
59
60#define ACP_I2S_COMP1_CAP_REG_OFFSET 0xac
61#define ACP_I2S_COMP2_CAP_REG_OFFSET 0xa8
62#define ACP_I2S_COMP1_PLAY_REG_OFFSET 0x6c
63#define ACP_I2S_COMP2_PLAY_REG_OFFSET 0x68
64#define ACP_BT_PLAY_REGS_START 0x14970
65#define ACP_BT_PLAY_REGS_END 0x14a24
66#define ACP_BT_COMP1_REG_OFFSET 0xac
67#define ACP_BT_COMP2_REG_OFFSET 0xa8
68
69#define mmACP_PGFSM_RETAIN_REG 0x51c9
70#define mmACP_PGFSM_CONFIG_REG 0x51ca
71#define mmACP_PGFSM_READ_REG_0 0x51cc
72
73#define mmACP_MEM_SHUT_DOWN_REQ_LO 0x51f8
74#define mmACP_MEM_SHUT_DOWN_REQ_HI 0x51f9
75#define mmACP_MEM_SHUT_DOWN_STS_LO 0x51fa
76#define mmACP_MEM_SHUT_DOWN_STS_HI 0x51fb
77
78#define mmACP_CONTROL 0x5131
79#define mmACP_STATUS 0x5133
80#define mmACP_SOFT_RESET 0x5134
81#define ACP_CONTROL__ClkEn_MASK 0x1
82#define ACP_SOFT_RESET__SoftResetAud_MASK 0x100
83#define ACP_SOFT_RESET__SoftResetAudDone_MASK 0x1000000
84#define ACP_CLOCK_EN_TIME_OUT_VALUE 0x000000FF
85#define ACP_SOFT_RESET_DONE_TIME_OUT_VALUE 0x000000FF
86
87#define ACP_TIMEOUT_LOOP 0x000000FF
88#define ACP_DEVS 4
89#define ACP_SRC_ID 162
90
91static unsigned long acp_machine_id;
92
93enum {
94 ACP_TILE_P1 = 0,
95 ACP_TILE_P2,
96 ACP_TILE_DSP0,
97 ACP_TILE_DSP1,
98 ACP_TILE_DSP2,
99};
100
101static int acp_sw_init(void *handle)
102{
103 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
104
105 adev->acp.parent = adev->dev;
106
107 adev->acp.cgs_device =
108 amdgpu_cgs_create_device(adev);
109 if (!adev->acp.cgs_device)
110 return -EINVAL;
111
112 return 0;
113}
114
115static int acp_sw_fini(void *handle)
116{
117 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
118
119 if (adev->acp.cgs_device)
120 amdgpu_cgs_destroy_device(adev->acp.cgs_device);
121
122 return 0;
123}
124
125struct acp_pm_domain {
126 void *adev;
127 struct generic_pm_domain gpd;
128};
129
130static int acp_poweroff(struct generic_pm_domain *genpd)
131{
132 struct acp_pm_domain *apd;
133 struct amdgpu_device *adev;
134
135 apd = container_of(genpd, struct acp_pm_domain, gpd);
136 adev = apd->adev;
137 /* call smu to POWER GATE ACP block
138 * smu will
139 * 1. turn off the acp clock
140 * 2. power off the acp tiles
141 * 3. check and enter ulv state
142 */
143 amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, true);
144 return 0;
145}
146
147static int acp_poweron(struct generic_pm_domain *genpd)
148{
149 struct acp_pm_domain *apd;
150 struct amdgpu_device *adev;
151
152 apd = container_of(genpd, struct acp_pm_domain, gpd);
153 adev = apd->adev;
154 /* call smu to UNGATE ACP block
155 * smu will
156 * 1. exit ulv
157 * 2. turn on acp clock
158 * 3. power on acp tiles
159 */
160 amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, false);
161 return 0;
162}
163
164static int acp_genpd_add_device(struct device *dev, void *data)
165{
166 struct generic_pm_domain *gpd = data;
167 int ret;
168
169 ret = pm_genpd_add_device(gpd, dev);
170 if (ret)
171 dev_err(dev, "Failed to add dev to genpd %d\n", ret);
172
173 return ret;
174}
175
176static int acp_genpd_remove_device(struct device *dev, void *data)
177{
178 int ret;
179
180 ret = pm_genpd_remove_device(dev);
181 if (ret)
182 dev_err(dev, "Failed to remove dev from genpd %d\n", ret);
183
184 /* Continue to remove */
185 return 0;
186}
187
188static int acp_quirk_cb(const struct dmi_system_id *id)
189{
190 acp_machine_id = ST_JADEITE;
191 return 1;
192}
193
194static const struct dmi_system_id acp_quirk_table[] = {
195 {
196 .callback = acp_quirk_cb,
197 .matches = {
198 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMD"),
199 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Jadeite"),
200 }
201 },
202 {
203 .callback = acp_quirk_cb,
204 .matches = {
205 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "IP3 Technology CO.,Ltd."),
206 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ASN1D"),
207 },
208 },
209 {
210 .callback = acp_quirk_cb,
211 .matches = {
212 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Standard"),
213 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ASN10"),
214 },
215 },
216 {}
217};
218
219/**
220 * acp_hw_init - start and test ACP block
221 *
222 * @handle: handle used to pass amdgpu_device pointer
223 *
224 */
225static int acp_hw_init(void *handle)
226{
227 int r;
228 u64 acp_base;
229 u32 val = 0;
230 u32 count = 0;
231 struct i2s_platform_data *i2s_pdata = NULL;
232
233 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
234
235 const struct amdgpu_ip_block *ip_block =
236 amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_ACP);
237
238 if (!ip_block)
239 return -EINVAL;
240
241 r = amd_acp_hw_init(adev->acp.cgs_device,
242 ip_block->version->major, ip_block->version->minor);
243 /* -ENODEV means board uses AZ rather than ACP */
244 if (r == -ENODEV) {
245 amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, true);
246 return 0;
247 } else if (r) {
248 return r;
249 }
250
251 if (adev->rmmio_size == 0 || adev->rmmio_size < 0x5289)
252 return -EINVAL;
253
254 acp_base = adev->rmmio_base;
255 adev->acp.acp_genpd = kzalloc(sizeof(struct acp_pm_domain), GFP_KERNEL);
256 if (!adev->acp.acp_genpd)
257 return -ENOMEM;
258
259 adev->acp.acp_genpd->gpd.name = "ACP_AUDIO";
260 adev->acp.acp_genpd->gpd.power_off = acp_poweroff;
261 adev->acp.acp_genpd->gpd.power_on = acp_poweron;
262 adev->acp.acp_genpd->adev = adev;
263
264 pm_genpd_init(&adev->acp.acp_genpd->gpd, NULL, false);
265 dmi_check_system(acp_quirk_table);
266 switch (acp_machine_id) {
267 case ST_JADEITE:
268 {
269 adev->acp.acp_cell = kcalloc(2, sizeof(struct mfd_cell),
270 GFP_KERNEL);
271 if (!adev->acp.acp_cell) {
272 r = -ENOMEM;
273 goto failure;
274 }
275
276 adev->acp.acp_res = kcalloc(3, sizeof(struct resource), GFP_KERNEL);
277 if (!adev->acp.acp_res) {
278 r = -ENOMEM;
279 goto failure;
280 }
281
282 i2s_pdata = kcalloc(1, sizeof(struct i2s_platform_data), GFP_KERNEL);
283 if (!i2s_pdata) {
284 r = -ENOMEM;
285 goto failure;
286 }
287
288 i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
289 DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
290 i2s_pdata[0].cap = DWC_I2S_PLAY | DWC_I2S_RECORD;
291 i2s_pdata[0].snd_rates = SNDRV_PCM_RATE_8000_96000;
292 i2s_pdata[0].i2s_reg_comp1 = ACP_I2S_COMP1_CAP_REG_OFFSET;
293 i2s_pdata[0].i2s_reg_comp2 = ACP_I2S_COMP2_CAP_REG_OFFSET;
294
295 adev->acp.acp_res[0].name = "acp2x_dma";
296 adev->acp.acp_res[0].flags = IORESOURCE_MEM;
297 adev->acp.acp_res[0].start = acp_base;
298 adev->acp.acp_res[0].end = acp_base + ACP_DMA_REGS_END;
299
300 adev->acp.acp_res[1].name = "acp2x_dw_i2s_play_cap";
301 adev->acp.acp_res[1].flags = IORESOURCE_MEM;
302 adev->acp.acp_res[1].start = acp_base + ACP_I2S_CAP_REGS_START;
303 adev->acp.acp_res[1].end = acp_base + ACP_I2S_CAP_REGS_END;
304
305 adev->acp.acp_res[2].name = "acp2x_dma_irq";
306 adev->acp.acp_res[2].flags = IORESOURCE_IRQ;
307 adev->acp.acp_res[2].start = amdgpu_irq_create_mapping(adev, 162);
308 adev->acp.acp_res[2].end = adev->acp.acp_res[2].start;
309
310 adev->acp.acp_cell[0].name = "acp_audio_dma";
311 adev->acp.acp_cell[0].num_resources = 3;
312 adev->acp.acp_cell[0].resources = &adev->acp.acp_res[0];
313 adev->acp.acp_cell[0].platform_data = &adev->asic_type;
314 adev->acp.acp_cell[0].pdata_size = sizeof(adev->asic_type);
315
316 adev->acp.acp_cell[1].name = "designware-i2s";
317 adev->acp.acp_cell[1].num_resources = 1;
318 adev->acp.acp_cell[1].resources = &adev->acp.acp_res[1];
319 adev->acp.acp_cell[1].platform_data = &i2s_pdata[0];
320 adev->acp.acp_cell[1].pdata_size = sizeof(struct i2s_platform_data);
321 r = mfd_add_hotplug_devices(adev->acp.parent, adev->acp.acp_cell, 2);
322 if (r)
323 goto failure;
324 r = device_for_each_child(adev->acp.parent, &adev->acp.acp_genpd->gpd,
325 acp_genpd_add_device);
326 if (r)
327 goto failure;
328 break;
329 }
330 default:
331 adev->acp.acp_cell = kcalloc(ACP_DEVS, sizeof(struct mfd_cell),
332 GFP_KERNEL);
333
334 if (!adev->acp.acp_cell) {
335 r = -ENOMEM;
336 goto failure;
337 }
338
339 adev->acp.acp_res = kcalloc(5, sizeof(struct resource), GFP_KERNEL);
340 if (!adev->acp.acp_res) {
341 r = -ENOMEM;
342 goto failure;
343 }
344
345 i2s_pdata = kcalloc(3, sizeof(struct i2s_platform_data), GFP_KERNEL);
346 if (!i2s_pdata) {
347 r = -ENOMEM;
348 goto failure;
349 }
350
351 switch (adev->asic_type) {
352 case CHIP_STONEY:
353 i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
354 DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
355 break;
356 default:
357 i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET;
358 }
359 i2s_pdata[0].cap = DWC_I2S_PLAY;
360 i2s_pdata[0].snd_rates = SNDRV_PCM_RATE_8000_96000;
361 i2s_pdata[0].i2s_reg_comp1 = ACP_I2S_COMP1_PLAY_REG_OFFSET;
362 i2s_pdata[0].i2s_reg_comp2 = ACP_I2S_COMP2_PLAY_REG_OFFSET;
363 switch (adev->asic_type) {
364 case CHIP_STONEY:
365 i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
366 DW_I2S_QUIRK_COMP_PARAM1 |
367 DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
368 break;
369 default:
370 i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
371 DW_I2S_QUIRK_COMP_PARAM1;
372 }
373
374 i2s_pdata[1].cap = DWC_I2S_RECORD;
375 i2s_pdata[1].snd_rates = SNDRV_PCM_RATE_8000_96000;
376 i2s_pdata[1].i2s_reg_comp1 = ACP_I2S_COMP1_CAP_REG_OFFSET;
377 i2s_pdata[1].i2s_reg_comp2 = ACP_I2S_COMP2_CAP_REG_OFFSET;
378
379 i2s_pdata[2].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET;
380 switch (adev->asic_type) {
381 case CHIP_STONEY:
382 i2s_pdata[2].quirks |= DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
383 break;
384 default:
385 break;
386 }
387
388 i2s_pdata[2].cap = DWC_I2S_PLAY | DWC_I2S_RECORD;
389 i2s_pdata[2].snd_rates = SNDRV_PCM_RATE_8000_96000;
390 i2s_pdata[2].i2s_reg_comp1 = ACP_BT_COMP1_REG_OFFSET;
391 i2s_pdata[2].i2s_reg_comp2 = ACP_BT_COMP2_REG_OFFSET;
392
393 adev->acp.acp_res[0].name = "acp2x_dma";
394 adev->acp.acp_res[0].flags = IORESOURCE_MEM;
395 adev->acp.acp_res[0].start = acp_base;
396 adev->acp.acp_res[0].end = acp_base + ACP_DMA_REGS_END;
397
398 adev->acp.acp_res[1].name = "acp2x_dw_i2s_play";
399 adev->acp.acp_res[1].flags = IORESOURCE_MEM;
400 adev->acp.acp_res[1].start = acp_base + ACP_I2S_PLAY_REGS_START;
401 adev->acp.acp_res[1].end = acp_base + ACP_I2S_PLAY_REGS_END;
402
403 adev->acp.acp_res[2].name = "acp2x_dw_i2s_cap";
404 adev->acp.acp_res[2].flags = IORESOURCE_MEM;
405 adev->acp.acp_res[2].start = acp_base + ACP_I2S_CAP_REGS_START;
406 adev->acp.acp_res[2].end = acp_base + ACP_I2S_CAP_REGS_END;
407
408 adev->acp.acp_res[3].name = "acp2x_dw_bt_i2s_play_cap";
409 adev->acp.acp_res[3].flags = IORESOURCE_MEM;
410 adev->acp.acp_res[3].start = acp_base + ACP_BT_PLAY_REGS_START;
411 adev->acp.acp_res[3].end = acp_base + ACP_BT_PLAY_REGS_END;
412
413 adev->acp.acp_res[4].name = "acp2x_dma_irq";
414 adev->acp.acp_res[4].flags = IORESOURCE_IRQ;
415 adev->acp.acp_res[4].start = amdgpu_irq_create_mapping(adev, 162);
416 adev->acp.acp_res[4].end = adev->acp.acp_res[4].start;
417
418 adev->acp.acp_cell[0].name = "acp_audio_dma";
419 adev->acp.acp_cell[0].num_resources = 5;
420 adev->acp.acp_cell[0].resources = &adev->acp.acp_res[0];
421 adev->acp.acp_cell[0].platform_data = &adev->asic_type;
422 adev->acp.acp_cell[0].pdata_size = sizeof(adev->asic_type);
423
424 adev->acp.acp_cell[1].name = "designware-i2s";
425 adev->acp.acp_cell[1].num_resources = 1;
426 adev->acp.acp_cell[1].resources = &adev->acp.acp_res[1];
427 adev->acp.acp_cell[1].platform_data = &i2s_pdata[0];
428 adev->acp.acp_cell[1].pdata_size = sizeof(struct i2s_platform_data);
429
430 adev->acp.acp_cell[2].name = "designware-i2s";
431 adev->acp.acp_cell[2].num_resources = 1;
432 adev->acp.acp_cell[2].resources = &adev->acp.acp_res[2];
433 adev->acp.acp_cell[2].platform_data = &i2s_pdata[1];
434 adev->acp.acp_cell[2].pdata_size = sizeof(struct i2s_platform_data);
435
436 adev->acp.acp_cell[3].name = "designware-i2s";
437 adev->acp.acp_cell[3].num_resources = 1;
438 adev->acp.acp_cell[3].resources = &adev->acp.acp_res[3];
439 adev->acp.acp_cell[3].platform_data = &i2s_pdata[2];
440 adev->acp.acp_cell[3].pdata_size = sizeof(struct i2s_platform_data);
441
442 r = mfd_add_hotplug_devices(adev->acp.parent, adev->acp.acp_cell, ACP_DEVS);
443 if (r)
444 goto failure;
445
446 r = device_for_each_child(adev->acp.parent, &adev->acp.acp_genpd->gpd,
447 acp_genpd_add_device);
448 if (r)
449 goto failure;
450 }
451
452 /* Assert Soft reset of ACP */
453 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
454
455 val |= ACP_SOFT_RESET__SoftResetAud_MASK;
456 cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
457
458 count = ACP_SOFT_RESET_DONE_TIME_OUT_VALUE;
459 while (true) {
460 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
461 if (ACP_SOFT_RESET__SoftResetAudDone_MASK ==
462 (val & ACP_SOFT_RESET__SoftResetAudDone_MASK))
463 break;
464 if (--count == 0) {
465 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
466 r = -ETIMEDOUT;
467 goto failure;
468 }
469 udelay(100);
470 }
471 /* Enable clock to ACP and wait until the clock is enabled */
472 val = cgs_read_register(adev->acp.cgs_device, mmACP_CONTROL);
473 val = val | ACP_CONTROL__ClkEn_MASK;
474 cgs_write_register(adev->acp.cgs_device, mmACP_CONTROL, val);
475
476 count = ACP_CLOCK_EN_TIME_OUT_VALUE;
477
478 while (true) {
479 val = cgs_read_register(adev->acp.cgs_device, mmACP_STATUS);
480 if (val & (u32) 0x1)
481 break;
482 if (--count == 0) {
483 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
484 r = -ETIMEDOUT;
485 goto failure;
486 }
487 udelay(100);
488 }
489 /* Deassert the SOFT RESET flags */
490 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
491 val &= ~ACP_SOFT_RESET__SoftResetAud_MASK;
492 cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
493 return 0;
494
495failure:
496 kfree(i2s_pdata);
497 kfree(adev->acp.acp_res);
498 kfree(adev->acp.acp_cell);
499 kfree(adev->acp.acp_genpd);
500 return r;
501}
502
503/**
504 * acp_hw_fini - stop the hardware block
505 *
506 * @handle: handle used to pass amdgpu_device pointer
507 *
508 */
509static int acp_hw_fini(void *handle)
510{
511 u32 val = 0;
512 u32 count = 0;
513 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
514
515 /* return early if no ACP */
516 if (!adev->acp.acp_genpd) {
517 amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, false);
518 return 0;
519 }
520
521 /* Assert Soft reset of ACP */
522 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
523
524 val |= ACP_SOFT_RESET__SoftResetAud_MASK;
525 cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
526
527 count = ACP_SOFT_RESET_DONE_TIME_OUT_VALUE;
528 while (true) {
529 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
530 if (ACP_SOFT_RESET__SoftResetAudDone_MASK ==
531 (val & ACP_SOFT_RESET__SoftResetAudDone_MASK))
532 break;
533 if (--count == 0) {
534 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
535 return -ETIMEDOUT;
536 }
537 udelay(100);
538 }
539 /* Disable ACP clock */
540 val = cgs_read_register(adev->acp.cgs_device, mmACP_CONTROL);
541 val &= ~ACP_CONTROL__ClkEn_MASK;
542 cgs_write_register(adev->acp.cgs_device, mmACP_CONTROL, val);
543
544 count = ACP_CLOCK_EN_TIME_OUT_VALUE;
545
546 while (true) {
547 val = cgs_read_register(adev->acp.cgs_device, mmACP_STATUS);
548 if (val & (u32) 0x1)
549 break;
550 if (--count == 0) {
551 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
552 return -ETIMEDOUT;
553 }
554 udelay(100);
555 }
556
557 device_for_each_child(adev->acp.parent, NULL,
558 acp_genpd_remove_device);
559
560 mfd_remove_devices(adev->acp.parent);
561 kfree(adev->acp.acp_res);
562 kfree(adev->acp.acp_genpd);
563 kfree(adev->acp.acp_cell);
564
565 return 0;
566}
567
568static int acp_suspend(void *handle)
569{
570 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
571
572 /* power up on suspend */
573 if (!adev->acp.acp_cell)
574 amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, false);
575 return 0;
576}
577
578static int acp_resume(void *handle)
579{
580 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
581
582 /* power down again on resume */
583 if (!adev->acp.acp_cell)
584 amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, true);
585 return 0;
586}
587
588static int acp_early_init(void *handle)
589{
590 return 0;
591}
592
593static bool acp_is_idle(void *handle)
594{
595 return true;
596}
597
598static int acp_wait_for_idle(void *handle)
599{
600 return 0;
601}
602
603static int acp_soft_reset(void *handle)
604{
605 return 0;
606}
607
608static int acp_set_clockgating_state(void *handle,
609 enum amd_clockgating_state state)
610{
611 return 0;
612}
613
614static int acp_set_powergating_state(void *handle,
615 enum amd_powergating_state state)
616{
617 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
618 bool enable = (state == AMD_PG_STATE_GATE);
619
620 amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, enable);
621
622 return 0;
623}
624
625static const struct amd_ip_funcs acp_ip_funcs = {
626 .name = "acp_ip",
627 .early_init = acp_early_init,
628 .late_init = NULL,
629 .sw_init = acp_sw_init,
630 .sw_fini = acp_sw_fini,
631 .hw_init = acp_hw_init,
632 .hw_fini = acp_hw_fini,
633 .suspend = acp_suspend,
634 .resume = acp_resume,
635 .is_idle = acp_is_idle,
636 .wait_for_idle = acp_wait_for_idle,
637 .soft_reset = acp_soft_reset,
638 .set_clockgating_state = acp_set_clockgating_state,
639 .set_powergating_state = acp_set_powergating_state,
640};
641
642const struct amdgpu_ip_block_version acp_ip_block = {
643 .type = AMD_IP_BLOCK_TYPE_ACP,
644 .major = 2,
645 .minor = 2,
646 .rev = 0,
647 .funcs = &acp_ip_funcs,
648};
1/*
2 * Copyright 2015 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: AMD
23 *
24 */
25
26#include <linux/irqdomain.h>
27#include <linux/pm_domain.h>
28#include <linux/platform_device.h>
29#include <sound/designware_i2s.h>
30#include <sound/pcm.h>
31
32#include "amdgpu.h"
33#include "atom.h"
34#include "amdgpu_acp.h"
35
36#include "acp_gfx_if.h"
37
38#define ACP_TILE_ON_MASK 0x03
39#define ACP_TILE_OFF_MASK 0x02
40#define ACP_TILE_ON_RETAIN_REG_MASK 0x1f
41#define ACP_TILE_OFF_RETAIN_REG_MASK 0x20
42
43#define ACP_TILE_P1_MASK 0x3e
44#define ACP_TILE_P2_MASK 0x3d
45#define ACP_TILE_DSP0_MASK 0x3b
46#define ACP_TILE_DSP1_MASK 0x37
47
48#define ACP_TILE_DSP2_MASK 0x2f
49
50#define ACP_DMA_REGS_END 0x146c0
51#define ACP_I2S_PLAY_REGS_START 0x14840
52#define ACP_I2S_PLAY_REGS_END 0x148b4
53#define ACP_I2S_CAP_REGS_START 0x148b8
54#define ACP_I2S_CAP_REGS_END 0x1496c
55
56#define ACP_I2S_COMP1_CAP_REG_OFFSET 0xac
57#define ACP_I2S_COMP2_CAP_REG_OFFSET 0xa8
58#define ACP_I2S_COMP1_PLAY_REG_OFFSET 0x6c
59#define ACP_I2S_COMP2_PLAY_REG_OFFSET 0x68
60
61#define mmACP_PGFSM_RETAIN_REG 0x51c9
62#define mmACP_PGFSM_CONFIG_REG 0x51ca
63#define mmACP_PGFSM_READ_REG_0 0x51cc
64
65#define mmACP_MEM_SHUT_DOWN_REQ_LO 0x51f8
66#define mmACP_MEM_SHUT_DOWN_REQ_HI 0x51f9
67#define mmACP_MEM_SHUT_DOWN_STS_LO 0x51fa
68#define mmACP_MEM_SHUT_DOWN_STS_HI 0x51fb
69
70#define mmACP_CONTROL 0x5131
71#define mmACP_STATUS 0x5133
72#define mmACP_SOFT_RESET 0x5134
73#define ACP_CONTROL__ClkEn_MASK 0x1
74#define ACP_SOFT_RESET__SoftResetAud_MASK 0x100
75#define ACP_SOFT_RESET__SoftResetAudDone_MASK 0x1000000
76#define ACP_CLOCK_EN_TIME_OUT_VALUE 0x000000FF
77#define ACP_SOFT_RESET_DONE_TIME_OUT_VALUE 0x000000FF
78
79#define ACP_TIMEOUT_LOOP 0x000000FF
80#define ACP_DEVS 3
81#define ACP_SRC_ID 162
82
83enum {
84 ACP_TILE_P1 = 0,
85 ACP_TILE_P2,
86 ACP_TILE_DSP0,
87 ACP_TILE_DSP1,
88 ACP_TILE_DSP2,
89};
90
91static int acp_sw_init(void *handle)
92{
93 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
94
95 adev->acp.parent = adev->dev;
96
97 adev->acp.cgs_device =
98 amdgpu_cgs_create_device(adev);
99 if (!adev->acp.cgs_device)
100 return -EINVAL;
101
102 return 0;
103}
104
105static int acp_sw_fini(void *handle)
106{
107 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
108
109 if (adev->acp.cgs_device)
110 amdgpu_cgs_destroy_device(adev->acp.cgs_device);
111
112 return 0;
113}
114
115/* power off a tile/block within ACP */
116static int acp_suspend_tile(void *cgs_dev, int tile)
117{
118 u32 val = 0;
119 u32 count = 0;
120
121 if ((tile < ACP_TILE_P1) || (tile > ACP_TILE_DSP2)) {
122 pr_err("Invalid ACP tile : %d to suspend\n", tile);
123 return -1;
124 }
125
126 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0 + tile);
127 val &= ACP_TILE_ON_MASK;
128
129 if (val == 0x0) {
130 val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
131 val = val | (1 << tile);
132 cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
133 cgs_write_register(cgs_dev, mmACP_PGFSM_CONFIG_REG,
134 0x500 + tile);
135
136 count = ACP_TIMEOUT_LOOP;
137 while (true) {
138 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0
139 + tile);
140 val = val & ACP_TILE_ON_MASK;
141 if (val == ACP_TILE_OFF_MASK)
142 break;
143 if (--count == 0) {
144 pr_err("Timeout reading ACP PGFSM status\n");
145 return -ETIMEDOUT;
146 }
147 udelay(100);
148 }
149
150 val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
151
152 val |= ACP_TILE_OFF_RETAIN_REG_MASK;
153 cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
154 }
155 return 0;
156}
157
158/* power on a tile/block within ACP */
159static int acp_resume_tile(void *cgs_dev, int tile)
160{
161 u32 val = 0;
162 u32 count = 0;
163
164 if ((tile < ACP_TILE_P1) || (tile > ACP_TILE_DSP2)) {
165 pr_err("Invalid ACP tile to resume\n");
166 return -1;
167 }
168
169 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0 + tile);
170 val = val & ACP_TILE_ON_MASK;
171
172 if (val != 0x0) {
173 cgs_write_register(cgs_dev, mmACP_PGFSM_CONFIG_REG,
174 0x600 + tile);
175 count = ACP_TIMEOUT_LOOP;
176 while (true) {
177 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0
178 + tile);
179 val = val & ACP_TILE_ON_MASK;
180 if (val == 0x0)
181 break;
182 if (--count == 0) {
183 pr_err("Timeout reading ACP PGFSM status\n");
184 return -ETIMEDOUT;
185 }
186 udelay(100);
187 }
188 val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
189 if (tile == ACP_TILE_P1)
190 val = val & (ACP_TILE_P1_MASK);
191 else if (tile == ACP_TILE_P2)
192 val = val & (ACP_TILE_P2_MASK);
193
194 cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
195 }
196 return 0;
197}
198
199struct acp_pm_domain {
200 void *cgs_dev;
201 struct generic_pm_domain gpd;
202};
203
204static int acp_poweroff(struct generic_pm_domain *genpd)
205{
206 int i, ret;
207 struct acp_pm_domain *apd;
208
209 apd = container_of(genpd, struct acp_pm_domain, gpd);
210 if (apd != NULL) {
211 /* Donot return abruptly if any of power tile fails to suspend.
212 * Log it and continue powering off other tile
213 */
214 for (i = 4; i >= 0 ; i--) {
215 ret = acp_suspend_tile(apd->cgs_dev, ACP_TILE_P1 + i);
216 if (ret)
217 pr_err("ACP tile %d tile suspend failed\n", i);
218 }
219 }
220 return 0;
221}
222
223static int acp_poweron(struct generic_pm_domain *genpd)
224{
225 int i, ret;
226 struct acp_pm_domain *apd;
227
228 apd = container_of(genpd, struct acp_pm_domain, gpd);
229 if (apd != NULL) {
230 for (i = 0; i < 2; i++) {
231 ret = acp_resume_tile(apd->cgs_dev, ACP_TILE_P1 + i);
232 if (ret) {
233 pr_err("ACP tile %d resume failed\n", i);
234 break;
235 }
236 }
237
238 /* Disable DSPs which are not going to be used */
239 for (i = 0; i < 3; i++) {
240 ret = acp_suspend_tile(apd->cgs_dev, ACP_TILE_DSP0 + i);
241 /* Continue suspending other DSP, even if one fails */
242 if (ret)
243 pr_err("ACP DSP %d suspend failed\n", i);
244 }
245 }
246 return 0;
247}
248
249static struct device *get_mfd_cell_dev(const char *device_name, int r)
250{
251 char auto_dev_name[25];
252 struct device *dev;
253
254 snprintf(auto_dev_name, sizeof(auto_dev_name),
255 "%s.%d.auto", device_name, r);
256 dev = bus_find_device_by_name(&platform_bus_type, NULL, auto_dev_name);
257 dev_info(dev, "device %s added to pm domain\n", auto_dev_name);
258
259 return dev;
260}
261
262/**
263 * acp_hw_init - start and test ACP block
264 *
265 * @adev: amdgpu_device pointer
266 *
267 */
268static int acp_hw_init(void *handle)
269{
270 int r, i;
271 uint64_t acp_base;
272 u32 val = 0;
273 u32 count = 0;
274 struct device *dev;
275 struct i2s_platform_data *i2s_pdata;
276
277 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
278
279 const struct amdgpu_ip_block *ip_block =
280 amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_ACP);
281
282 if (!ip_block)
283 return -EINVAL;
284
285 r = amd_acp_hw_init(adev->acp.cgs_device,
286 ip_block->version->major, ip_block->version->minor);
287 /* -ENODEV means board uses AZ rather than ACP */
288 if (r == -ENODEV)
289 return 0;
290 else if (r)
291 return r;
292
293 r = cgs_get_pci_resource(adev->acp.cgs_device, CGS_RESOURCE_TYPE_MMIO,
294 0x5289, 0, &acp_base);
295 if (r == -ENODEV)
296 return 0;
297 else if (r)
298 return r;
299 if (adev->asic_type != CHIP_STONEY) {
300 adev->acp.acp_genpd = kzalloc(sizeof(struct acp_pm_domain), GFP_KERNEL);
301 if (adev->acp.acp_genpd == NULL)
302 return -ENOMEM;
303
304 adev->acp.acp_genpd->gpd.name = "ACP_AUDIO";
305 adev->acp.acp_genpd->gpd.power_off = acp_poweroff;
306 adev->acp.acp_genpd->gpd.power_on = acp_poweron;
307
308
309 adev->acp.acp_genpd->cgs_dev = adev->acp.cgs_device;
310
311 pm_genpd_init(&adev->acp.acp_genpd->gpd, NULL, false);
312 }
313
314 adev->acp.acp_cell = kzalloc(sizeof(struct mfd_cell) * ACP_DEVS,
315 GFP_KERNEL);
316
317 if (adev->acp.acp_cell == NULL)
318 return -ENOMEM;
319
320 adev->acp.acp_res = kzalloc(sizeof(struct resource) * 4, GFP_KERNEL);
321
322 if (adev->acp.acp_res == NULL) {
323 kfree(adev->acp.acp_cell);
324 return -ENOMEM;
325 }
326
327 i2s_pdata = kzalloc(sizeof(struct i2s_platform_data) * 2, GFP_KERNEL);
328 if (i2s_pdata == NULL) {
329 kfree(adev->acp.acp_res);
330 kfree(adev->acp.acp_cell);
331 return -ENOMEM;
332 }
333
334 switch (adev->asic_type) {
335 case CHIP_STONEY:
336 i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
337 DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
338 break;
339 default:
340 i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET;
341 }
342 i2s_pdata[0].cap = DWC_I2S_PLAY;
343 i2s_pdata[0].snd_rates = SNDRV_PCM_RATE_8000_96000;
344 i2s_pdata[0].i2s_reg_comp1 = ACP_I2S_COMP1_PLAY_REG_OFFSET;
345 i2s_pdata[0].i2s_reg_comp2 = ACP_I2S_COMP2_PLAY_REG_OFFSET;
346 switch (adev->asic_type) {
347 case CHIP_STONEY:
348 i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
349 DW_I2S_QUIRK_COMP_PARAM1 |
350 DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
351 break;
352 default:
353 i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
354 DW_I2S_QUIRK_COMP_PARAM1;
355 }
356
357 i2s_pdata[1].cap = DWC_I2S_RECORD;
358 i2s_pdata[1].snd_rates = SNDRV_PCM_RATE_8000_96000;
359 i2s_pdata[1].i2s_reg_comp1 = ACP_I2S_COMP1_CAP_REG_OFFSET;
360 i2s_pdata[1].i2s_reg_comp2 = ACP_I2S_COMP2_CAP_REG_OFFSET;
361
362 adev->acp.acp_res[0].name = "acp2x_dma";
363 adev->acp.acp_res[0].flags = IORESOURCE_MEM;
364 adev->acp.acp_res[0].start = acp_base;
365 adev->acp.acp_res[0].end = acp_base + ACP_DMA_REGS_END;
366
367 adev->acp.acp_res[1].name = "acp2x_dw_i2s_play";
368 adev->acp.acp_res[1].flags = IORESOURCE_MEM;
369 adev->acp.acp_res[1].start = acp_base + ACP_I2S_PLAY_REGS_START;
370 adev->acp.acp_res[1].end = acp_base + ACP_I2S_PLAY_REGS_END;
371
372 adev->acp.acp_res[2].name = "acp2x_dw_i2s_cap";
373 adev->acp.acp_res[2].flags = IORESOURCE_MEM;
374 adev->acp.acp_res[2].start = acp_base + ACP_I2S_CAP_REGS_START;
375 adev->acp.acp_res[2].end = acp_base + ACP_I2S_CAP_REGS_END;
376
377 adev->acp.acp_res[3].name = "acp2x_dma_irq";
378 adev->acp.acp_res[3].flags = IORESOURCE_IRQ;
379 adev->acp.acp_res[3].start = amdgpu_irq_create_mapping(adev, 162);
380 adev->acp.acp_res[3].end = adev->acp.acp_res[3].start;
381
382 adev->acp.acp_cell[0].name = "acp_audio_dma";
383 adev->acp.acp_cell[0].num_resources = 4;
384 adev->acp.acp_cell[0].resources = &adev->acp.acp_res[0];
385 adev->acp.acp_cell[0].platform_data = &adev->asic_type;
386 adev->acp.acp_cell[0].pdata_size = sizeof(adev->asic_type);
387
388 adev->acp.acp_cell[1].name = "designware-i2s";
389 adev->acp.acp_cell[1].num_resources = 1;
390 adev->acp.acp_cell[1].resources = &adev->acp.acp_res[1];
391 adev->acp.acp_cell[1].platform_data = &i2s_pdata[0];
392 adev->acp.acp_cell[1].pdata_size = sizeof(struct i2s_platform_data);
393
394 adev->acp.acp_cell[2].name = "designware-i2s";
395 adev->acp.acp_cell[2].num_resources = 1;
396 adev->acp.acp_cell[2].resources = &adev->acp.acp_res[2];
397 adev->acp.acp_cell[2].platform_data = &i2s_pdata[1];
398 adev->acp.acp_cell[2].pdata_size = sizeof(struct i2s_platform_data);
399
400 r = mfd_add_hotplug_devices(adev->acp.parent, adev->acp.acp_cell,
401 ACP_DEVS);
402 if (r)
403 return r;
404
405 if (adev->asic_type != CHIP_STONEY) {
406 for (i = 0; i < ACP_DEVS ; i++) {
407 dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i);
408 r = pm_genpd_add_device(&adev->acp.acp_genpd->gpd, dev);
409 if (r) {
410 dev_err(dev, "Failed to add dev to genpd\n");
411 return r;
412 }
413 }
414 }
415
416 /* Assert Soft reset of ACP */
417 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
418
419 val |= ACP_SOFT_RESET__SoftResetAud_MASK;
420 cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
421
422 count = ACP_SOFT_RESET_DONE_TIME_OUT_VALUE;
423 while (true) {
424 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
425 if (ACP_SOFT_RESET__SoftResetAudDone_MASK ==
426 (val & ACP_SOFT_RESET__SoftResetAudDone_MASK))
427 break;
428 if (--count == 0) {
429 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
430 return -ETIMEDOUT;
431 }
432 udelay(100);
433 }
434 /* Enable clock to ACP and wait until the clock is enabled */
435 val = cgs_read_register(adev->acp.cgs_device, mmACP_CONTROL);
436 val = val | ACP_CONTROL__ClkEn_MASK;
437 cgs_write_register(adev->acp.cgs_device, mmACP_CONTROL, val);
438
439 count = ACP_CLOCK_EN_TIME_OUT_VALUE;
440
441 while (true) {
442 val = cgs_read_register(adev->acp.cgs_device, mmACP_STATUS);
443 if (val & (u32) 0x1)
444 break;
445 if (--count == 0) {
446 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
447 return -ETIMEDOUT;
448 }
449 udelay(100);
450 }
451 /* Deassert the SOFT RESET flags */
452 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
453 val &= ~ACP_SOFT_RESET__SoftResetAud_MASK;
454 cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
455
456 return 0;
457}
458
459/**
460 * acp_hw_fini - stop the hardware block
461 *
462 * @adev: amdgpu_device pointer
463 *
464 */
465static int acp_hw_fini(void *handle)
466{
467 int i, ret;
468 u32 val = 0;
469 u32 count = 0;
470 struct device *dev;
471 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
472
473 /* return early if no ACP */
474 if (!adev->acp.acp_cell)
475 return 0;
476
477 /* Assert Soft reset of ACP */
478 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
479
480 val |= ACP_SOFT_RESET__SoftResetAud_MASK;
481 cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
482
483 count = ACP_SOFT_RESET_DONE_TIME_OUT_VALUE;
484 while (true) {
485 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
486 if (ACP_SOFT_RESET__SoftResetAudDone_MASK ==
487 (val & ACP_SOFT_RESET__SoftResetAudDone_MASK))
488 break;
489 if (--count == 0) {
490 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
491 return -ETIMEDOUT;
492 }
493 udelay(100);
494 }
495 /* Disable ACP clock */
496 val = cgs_read_register(adev->acp.cgs_device, mmACP_CONTROL);
497 val &= ~ACP_CONTROL__ClkEn_MASK;
498 cgs_write_register(adev->acp.cgs_device, mmACP_CONTROL, val);
499
500 count = ACP_CLOCK_EN_TIME_OUT_VALUE;
501
502 while (true) {
503 val = cgs_read_register(adev->acp.cgs_device, mmACP_STATUS);
504 if (val & (u32) 0x1)
505 break;
506 if (--count == 0) {
507 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
508 return -ETIMEDOUT;
509 }
510 udelay(100);
511 }
512
513 if (adev->acp.acp_genpd) {
514 for (i = 0; i < ACP_DEVS ; i++) {
515 dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i);
516 ret = pm_genpd_remove_device(&adev->acp.acp_genpd->gpd, dev);
517 /* If removal fails, dont giveup and try rest */
518 if (ret)
519 dev_err(dev, "remove dev from genpd failed\n");
520 }
521 kfree(adev->acp.acp_genpd);
522 }
523
524 mfd_remove_devices(adev->acp.parent);
525 kfree(adev->acp.acp_res);
526 kfree(adev->acp.acp_cell);
527
528 return 0;
529}
530
531static int acp_suspend(void *handle)
532{
533 return 0;
534}
535
536static int acp_resume(void *handle)
537{
538 return 0;
539}
540
541static int acp_early_init(void *handle)
542{
543 return 0;
544}
545
546static bool acp_is_idle(void *handle)
547{
548 return true;
549}
550
551static int acp_wait_for_idle(void *handle)
552{
553 return 0;
554}
555
556static int acp_soft_reset(void *handle)
557{
558 return 0;
559}
560
561static int acp_set_clockgating_state(void *handle,
562 enum amd_clockgating_state state)
563{
564 return 0;
565}
566
567static int acp_set_powergating_state(void *handle,
568 enum amd_powergating_state state)
569{
570 return 0;
571}
572
573static const struct amd_ip_funcs acp_ip_funcs = {
574 .name = "acp_ip",
575 .early_init = acp_early_init,
576 .late_init = NULL,
577 .sw_init = acp_sw_init,
578 .sw_fini = acp_sw_fini,
579 .hw_init = acp_hw_init,
580 .hw_fini = acp_hw_fini,
581 .suspend = acp_suspend,
582 .resume = acp_resume,
583 .is_idle = acp_is_idle,
584 .wait_for_idle = acp_wait_for_idle,
585 .soft_reset = acp_soft_reset,
586 .set_clockgating_state = acp_set_clockgating_state,
587 .set_powergating_state = acp_set_powergating_state,
588};
589
590const struct amdgpu_ip_block_version acp_ip_block =
591{
592 .type = AMD_IP_BLOCK_TYPE_ACP,
593 .major = 2,
594 .minor = 2,
595 .rev = 0,
596 .funcs = &acp_ip_funcs,
597};