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a8fe58ce MB |
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> | |
25030321 | 27 | #include <linux/pm_domain.h> |
a8fe58ce MB |
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 | ||
37c5f2c9 AA |
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 | |
a8fe58ce MB |
82 | |
83 | enum { | |
84 | ACP_TILE_P1 = 0, | |
85 | ACP_TILE_P2, | |
86 | ACP_TILE_DSP0, | |
87 | ACP_TILE_DSP1, | |
88 | ACP_TILE_DSP2, | |
89 | }; | |
90 | ||
91 | static 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 | ||
105 | static 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 | ||
25030321 MSB |
115 | /* power off a tile/block within ACP */ |
116 | static 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 */ | |
159 | static 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 | ||
199 | struct acp_pm_domain { | |
200 | void *cgs_dev; | |
201 | struct generic_pm_domain gpd; | |
202 | }; | |
203 | ||
204 | static 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 | ||
223 | static 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 | ||
249 | static struct device *get_mfd_cell_dev(const char *device_name, int r) | |
250 | { | |
251 | char auto_dev_name[25]; | |
25030321 MSB |
252 | struct device *dev; |
253 | ||
a65ecc40 DC |
254 | snprintf(auto_dev_name, sizeof(auto_dev_name), |
255 | "%s.%d.auto", device_name, r); | |
25030321 MSB |
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 | ||
a8fe58ce MB |
262 | /** |
263 | * acp_hw_init - start and test ACP block | |
264 | * | |
265 | * @adev: amdgpu_device pointer | |
266 | * | |
267 | */ | |
268 | static int acp_hw_init(void *handle) | |
269 | { | |
25030321 | 270 | int r, i; |
a8fe58ce | 271 | uint64_t acp_base; |
37c5f2c9 AA |
272 | u32 val = 0; |
273 | u32 count = 0; | |
25030321 | 274 | struct device *dev; |
a8fe58ce MB |
275 | struct i2s_platform_data *i2s_pdata; |
276 | ||
277 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; | |
278 | ||
a1255107 | 279 | const struct amdgpu_ip_block *ip_block = |
2990a1fc | 280 | amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_ACP); |
a8fe58ce | 281 | |
a1255107 | 282 | if (!ip_block) |
a8fe58ce MB |
283 | return -EINVAL; |
284 | ||
285 | r = amd_acp_hw_init(adev->acp.cgs_device, | |
a1255107 | 286 | ip_block->version->major, ip_block->version->minor); |
a8fe58ce MB |
287 | /* -ENODEV means board uses AZ rather than ACP */ |
288 | if (r == -ENODEV) | |
289 | return 0; | |
290 | else if (r) | |
291 | return r; | |
292 | ||
d32d6617 RZ |
293 | if (adev->rmmio_size == 0 || adev->rmmio_size < 0x5289) |
294 | return -EINVAL; | |
295 | ||
296 | acp_base = adev->rmmio_base; | |
297 | ||
43bb3a6d VM |
298 | if (adev->asic_type != CHIP_STONEY) { |
299 | adev->acp.acp_genpd = kzalloc(sizeof(struct acp_pm_domain), GFP_KERNEL); | |
300 | if (adev->acp.acp_genpd == NULL) | |
301 | return -ENOMEM; | |
a8fe58ce | 302 | |
43bb3a6d VM |
303 | adev->acp.acp_genpd->gpd.name = "ACP_AUDIO"; |
304 | adev->acp.acp_genpd->gpd.power_off = acp_poweroff; | |
305 | adev->acp.acp_genpd->gpd.power_on = acp_poweron; | |
25030321 MSB |
306 | |
307 | ||
43bb3a6d | 308 | adev->acp.acp_genpd->cgs_dev = adev->acp.cgs_device; |
25030321 | 309 | |
43bb3a6d VM |
310 | pm_genpd_init(&adev->acp.acp_genpd->gpd, NULL, false); |
311 | } | |
25030321 | 312 | |
6396bb22 | 313 | adev->acp.acp_cell = kcalloc(ACP_DEVS, sizeof(struct mfd_cell), |
a8fe58ce MB |
314 | GFP_KERNEL); |
315 | ||
316 | if (adev->acp.acp_cell == NULL) | |
317 | return -ENOMEM; | |
318 | ||
6396bb22 | 319 | adev->acp.acp_res = kcalloc(4, sizeof(struct resource), GFP_KERNEL); |
a8fe58ce MB |
320 | |
321 | if (adev->acp.acp_res == NULL) { | |
322 | kfree(adev->acp.acp_cell); | |
323 | return -ENOMEM; | |
324 | } | |
325 | ||
6396bb22 | 326 | i2s_pdata = kcalloc(2, sizeof(struct i2s_platform_data), GFP_KERNEL); |
a8fe58ce MB |
327 | if (i2s_pdata == NULL) { |
328 | kfree(adev->acp.acp_res); | |
329 | kfree(adev->acp.acp_cell); | |
330 | return -ENOMEM; | |
331 | } | |
332 | ||
81454cad VM |
333 | switch (adev->asic_type) { |
334 | case CHIP_STONEY: | |
335 | i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET | | |
336 | DW_I2S_QUIRK_16BIT_IDX_OVERRIDE; | |
337 | break; | |
338 | default: | |
339 | i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET; | |
340 | } | |
a8fe58ce MB |
341 | i2s_pdata[0].cap = DWC_I2S_PLAY; |
342 | i2s_pdata[0].snd_rates = SNDRV_PCM_RATE_8000_96000; | |
343 | i2s_pdata[0].i2s_reg_comp1 = ACP_I2S_COMP1_PLAY_REG_OFFSET; | |
344 | i2s_pdata[0].i2s_reg_comp2 = ACP_I2S_COMP2_PLAY_REG_OFFSET; | |
81454cad VM |
345 | switch (adev->asic_type) { |
346 | case CHIP_STONEY: | |
347 | i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET | | |
348 | DW_I2S_QUIRK_COMP_PARAM1 | | |
349 | DW_I2S_QUIRK_16BIT_IDX_OVERRIDE; | |
350 | break; | |
351 | default: | |
352 | i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET | | |
353 | DW_I2S_QUIRK_COMP_PARAM1; | |
354 | } | |
a8fe58ce | 355 | |
a8fe58ce MB |
356 | i2s_pdata[1].cap = DWC_I2S_RECORD; |
357 | i2s_pdata[1].snd_rates = SNDRV_PCM_RATE_8000_96000; | |
358 | i2s_pdata[1].i2s_reg_comp1 = ACP_I2S_COMP1_CAP_REG_OFFSET; | |
359 | i2s_pdata[1].i2s_reg_comp2 = ACP_I2S_COMP2_CAP_REG_OFFSET; | |
360 | ||
361 | adev->acp.acp_res[0].name = "acp2x_dma"; | |
362 | adev->acp.acp_res[0].flags = IORESOURCE_MEM; | |
363 | adev->acp.acp_res[0].start = acp_base; | |
364 | adev->acp.acp_res[0].end = acp_base + ACP_DMA_REGS_END; | |
365 | ||
366 | adev->acp.acp_res[1].name = "acp2x_dw_i2s_play"; | |
367 | adev->acp.acp_res[1].flags = IORESOURCE_MEM; | |
368 | adev->acp.acp_res[1].start = acp_base + ACP_I2S_PLAY_REGS_START; | |
369 | adev->acp.acp_res[1].end = acp_base + ACP_I2S_PLAY_REGS_END; | |
370 | ||
371 | adev->acp.acp_res[2].name = "acp2x_dw_i2s_cap"; | |
372 | adev->acp.acp_res[2].flags = IORESOURCE_MEM; | |
373 | adev->acp.acp_res[2].start = acp_base + ACP_I2S_CAP_REGS_START; | |
374 | adev->acp.acp_res[2].end = acp_base + ACP_I2S_CAP_REGS_END; | |
375 | ||
376 | adev->acp.acp_res[3].name = "acp2x_dma_irq"; | |
377 | adev->acp.acp_res[3].flags = IORESOURCE_IRQ; | |
378 | adev->acp.acp_res[3].start = amdgpu_irq_create_mapping(adev, 162); | |
379 | adev->acp.acp_res[3].end = adev->acp.acp_res[3].start; | |
380 | ||
381 | adev->acp.acp_cell[0].name = "acp_audio_dma"; | |
382 | adev->acp.acp_cell[0].num_resources = 4; | |
383 | adev->acp.acp_cell[0].resources = &adev->acp.acp_res[0]; | |
1fd16f36 VM |
384 | adev->acp.acp_cell[0].platform_data = &adev->asic_type; |
385 | adev->acp.acp_cell[0].pdata_size = sizeof(adev->asic_type); | |
a8fe58ce MB |
386 | |
387 | adev->acp.acp_cell[1].name = "designware-i2s"; | |
388 | adev->acp.acp_cell[1].num_resources = 1; | |
389 | adev->acp.acp_cell[1].resources = &adev->acp.acp_res[1]; | |
390 | adev->acp.acp_cell[1].platform_data = &i2s_pdata[0]; | |
391 | adev->acp.acp_cell[1].pdata_size = sizeof(struct i2s_platform_data); | |
392 | ||
393 | adev->acp.acp_cell[2].name = "designware-i2s"; | |
394 | adev->acp.acp_cell[2].num_resources = 1; | |
395 | adev->acp.acp_cell[2].resources = &adev->acp.acp_res[2]; | |
396 | adev->acp.acp_cell[2].platform_data = &i2s_pdata[1]; | |
397 | adev->acp.acp_cell[2].pdata_size = sizeof(struct i2s_platform_data); | |
398 | ||
399 | r = mfd_add_hotplug_devices(adev->acp.parent, adev->acp.acp_cell, | |
400 | ACP_DEVS); | |
401 | if (r) | |
402 | return r; | |
403 | ||
43bb3a6d VM |
404 | if (adev->asic_type != CHIP_STONEY) { |
405 | for (i = 0; i < ACP_DEVS ; i++) { | |
406 | dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i); | |
407 | r = pm_genpd_add_device(&adev->acp.acp_genpd->gpd, dev); | |
408 | if (r) { | |
409 | dev_err(dev, "Failed to add dev to genpd\n"); | |
410 | return r; | |
411 | } | |
25030321 MSB |
412 | } |
413 | } | |
414 | ||
37c5f2c9 AA |
415 | /* Assert Soft reset of ACP */ |
416 | val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET); | |
417 | ||
418 | val |= ACP_SOFT_RESET__SoftResetAud_MASK; | |
419 | cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val); | |
420 | ||
421 | count = ACP_SOFT_RESET_DONE_TIME_OUT_VALUE; | |
422 | while (true) { | |
423 | val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET); | |
424 | if (ACP_SOFT_RESET__SoftResetAudDone_MASK == | |
425 | (val & ACP_SOFT_RESET__SoftResetAudDone_MASK)) | |
426 | break; | |
427 | if (--count == 0) { | |
428 | dev_err(&adev->pdev->dev, "Failed to reset ACP\n"); | |
429 | return -ETIMEDOUT; | |
430 | } | |
431 | udelay(100); | |
432 | } | |
433 | /* Enable clock to ACP and wait until the clock is enabled */ | |
434 | val = cgs_read_register(adev->acp.cgs_device, mmACP_CONTROL); | |
435 | val = val | ACP_CONTROL__ClkEn_MASK; | |
436 | cgs_write_register(adev->acp.cgs_device, mmACP_CONTROL, val); | |
437 | ||
438 | count = ACP_CLOCK_EN_TIME_OUT_VALUE; | |
439 | ||
440 | while (true) { | |
441 | val = cgs_read_register(adev->acp.cgs_device, mmACP_STATUS); | |
442 | if (val & (u32) 0x1) | |
443 | break; | |
444 | if (--count == 0) { | |
445 | dev_err(&adev->pdev->dev, "Failed to reset ACP\n"); | |
446 | return -ETIMEDOUT; | |
447 | } | |
448 | udelay(100); | |
449 | } | |
450 | /* Deassert the SOFT RESET flags */ | |
451 | val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET); | |
452 | val &= ~ACP_SOFT_RESET__SoftResetAud_MASK; | |
453 | cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val); | |
454 | ||
a8fe58ce MB |
455 | return 0; |
456 | } | |
457 | ||
458 | /** | |
459 | * acp_hw_fini - stop the hardware block | |
460 | * | |
461 | * @adev: amdgpu_device pointer | |
462 | * | |
463 | */ | |
464 | static int acp_hw_fini(void *handle) | |
465 | { | |
25030321 | 466 | int i, ret; |
37c5f2c9 AA |
467 | u32 val = 0; |
468 | u32 count = 0; | |
25030321 | 469 | struct device *dev; |
a8fe58ce MB |
470 | struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
471 | ||
757124d9 | 472 | /* return early if no ACP */ |
43bb3a6d | 473 | if (!adev->acp.acp_cell) |
757124d9 AD |
474 | return 0; |
475 | ||
37c5f2c9 AA |
476 | /* Assert Soft reset of ACP */ |
477 | val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET); | |
478 | ||
479 | val |= ACP_SOFT_RESET__SoftResetAud_MASK; | |
480 | cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val); | |
481 | ||
482 | count = ACP_SOFT_RESET_DONE_TIME_OUT_VALUE; | |
483 | while (true) { | |
484 | val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET); | |
485 | if (ACP_SOFT_RESET__SoftResetAudDone_MASK == | |
486 | (val & ACP_SOFT_RESET__SoftResetAudDone_MASK)) | |
487 | break; | |
488 | if (--count == 0) { | |
489 | dev_err(&adev->pdev->dev, "Failed to reset ACP\n"); | |
490 | return -ETIMEDOUT; | |
491 | } | |
492 | udelay(100); | |
493 | } | |
494 | /* Disable ACP clock */ | |
495 | val = cgs_read_register(adev->acp.cgs_device, mmACP_CONTROL); | |
496 | val &= ~ACP_CONTROL__ClkEn_MASK; | |
497 | cgs_write_register(adev->acp.cgs_device, mmACP_CONTROL, val); | |
498 | ||
499 | count = ACP_CLOCK_EN_TIME_OUT_VALUE; | |
500 | ||
501 | while (true) { | |
502 | val = cgs_read_register(adev->acp.cgs_device, mmACP_STATUS); | |
503 | if (val & (u32) 0x1) | |
504 | break; | |
505 | if (--count == 0) { | |
506 | dev_err(&adev->pdev->dev, "Failed to reset ACP\n"); | |
507 | return -ETIMEDOUT; | |
508 | } | |
509 | udelay(100); | |
510 | } | |
511 | ||
43bb3a6d VM |
512 | if (adev->acp.acp_genpd) { |
513 | for (i = 0; i < ACP_DEVS ; i++) { | |
514 | dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i); | |
924f4486 | 515 | ret = pm_genpd_remove_device(dev); |
43bb3a6d VM |
516 | /* If removal fails, dont giveup and try rest */ |
517 | if (ret) | |
518 | dev_err(dev, "remove dev from genpd failed\n"); | |
519 | } | |
520 | kfree(adev->acp.acp_genpd); | |
25030321 MSB |
521 | } |
522 | ||
a8fe58ce MB |
523 | mfd_remove_devices(adev->acp.parent); |
524 | kfree(adev->acp.acp_res); | |
525 | kfree(adev->acp.acp_cell); | |
526 | ||
527 | return 0; | |
528 | } | |
529 | ||
530 | static int acp_suspend(void *handle) | |
531 | { | |
532 | return 0; | |
533 | } | |
534 | ||
535 | static int acp_resume(void *handle) | |
536 | { | |
537 | return 0; | |
538 | } | |
539 | ||
540 | static int acp_early_init(void *handle) | |
541 | { | |
542 | return 0; | |
543 | } | |
544 | ||
545 | static bool acp_is_idle(void *handle) | |
546 | { | |
547 | return true; | |
548 | } | |
549 | ||
550 | static int acp_wait_for_idle(void *handle) | |
551 | { | |
552 | return 0; | |
553 | } | |
554 | ||
555 | static int acp_soft_reset(void *handle) | |
556 | { | |
557 | return 0; | |
558 | } | |
559 | ||
a8fe58ce MB |
560 | static int acp_set_clockgating_state(void *handle, |
561 | enum amd_clockgating_state state) | |
562 | { | |
563 | return 0; | |
564 | } | |
565 | ||
566 | static int acp_set_powergating_state(void *handle, | |
567 | enum amd_powergating_state state) | |
568 | { | |
569 | return 0; | |
570 | } | |
571 | ||
a1255107 | 572 | static const struct amd_ip_funcs acp_ip_funcs = { |
88a907d6 | 573 | .name = "acp_ip", |
a8fe58ce MB |
574 | .early_init = acp_early_init, |
575 | .late_init = NULL, | |
576 | .sw_init = acp_sw_init, | |
577 | .sw_fini = acp_sw_fini, | |
578 | .hw_init = acp_hw_init, | |
579 | .hw_fini = acp_hw_fini, | |
580 | .suspend = acp_suspend, | |
581 | .resume = acp_resume, | |
582 | .is_idle = acp_is_idle, | |
583 | .wait_for_idle = acp_wait_for_idle, | |
584 | .soft_reset = acp_soft_reset, | |
a8fe58ce MB |
585 | .set_clockgating_state = acp_set_clockgating_state, |
586 | .set_powergating_state = acp_set_powergating_state, | |
587 | }; | |
a1255107 AD |
588 | |
589 | const struct amdgpu_ip_block_version acp_ip_block = | |
590 | { | |
591 | .type = AMD_IP_BLOCK_TYPE_ACP, | |
592 | .major = 2, | |
593 | .minor = 2, | |
594 | .rev = 0, | |
595 | .funcs = &acp_ip_funcs, | |
596 | }; |