2 * Copyright 2015 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
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>
34 #include "amdgpu_acp.h"
36 #include "acp_gfx_if.h"
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
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
48 #define ACP_TILE_DSP2_MASK 0x2f
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
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 #define ACP_BT_PLAY_REGS_START 0x14970
61 #define ACP_BT_PLAY_REGS_END 0x14a24
62 #define ACP_BT_COMP1_REG_OFFSET 0xac
63 #define ACP_BT_COMP2_REG_OFFSET 0xa8
65 #define mmACP_PGFSM_RETAIN_REG 0x51c9
66 #define mmACP_PGFSM_CONFIG_REG 0x51ca
67 #define mmACP_PGFSM_READ_REG_0 0x51cc
69 #define mmACP_MEM_SHUT_DOWN_REQ_LO 0x51f8
70 #define mmACP_MEM_SHUT_DOWN_REQ_HI 0x51f9
71 #define mmACP_MEM_SHUT_DOWN_STS_LO 0x51fa
72 #define mmACP_MEM_SHUT_DOWN_STS_HI 0x51fb
74 #define mmACP_CONTROL 0x5131
75 #define mmACP_STATUS 0x5133
76 #define mmACP_SOFT_RESET 0x5134
77 #define ACP_CONTROL__ClkEn_MASK 0x1
78 #define ACP_SOFT_RESET__SoftResetAud_MASK 0x100
79 #define ACP_SOFT_RESET__SoftResetAudDone_MASK 0x1000000
80 #define ACP_CLOCK_EN_TIME_OUT_VALUE 0x000000FF
81 #define ACP_SOFT_RESET_DONE_TIME_OUT_VALUE 0x000000FF
83 #define ACP_TIMEOUT_LOOP 0x000000FF
85 #define ACP_SRC_ID 162
95 static int acp_sw_init(void *handle)
97 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
99 adev->acp.parent = adev->dev;
101 adev->acp.cgs_device =
102 amdgpu_cgs_create_device(adev);
103 if (!adev->acp.cgs_device)
109 static int acp_sw_fini(void *handle)
111 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
113 if (adev->acp.cgs_device)
114 amdgpu_cgs_destroy_device(adev->acp.cgs_device);
119 /* power off a tile/block within ACP */
120 static int acp_suspend_tile(void *cgs_dev, int tile)
125 if ((tile < ACP_TILE_P1) || (tile > ACP_TILE_DSP2)) {
126 pr_err("Invalid ACP tile : %d to suspend\n", tile);
130 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0 + tile);
131 val &= ACP_TILE_ON_MASK;
134 val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
135 val = val | (1 << tile);
136 cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
137 cgs_write_register(cgs_dev, mmACP_PGFSM_CONFIG_REG,
140 count = ACP_TIMEOUT_LOOP;
142 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0
144 val = val & ACP_TILE_ON_MASK;
145 if (val == ACP_TILE_OFF_MASK)
148 pr_err("Timeout reading ACP PGFSM status\n");
154 val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
156 val |= ACP_TILE_OFF_RETAIN_REG_MASK;
157 cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
162 /* power on a tile/block within ACP */
163 static int acp_resume_tile(void *cgs_dev, int tile)
168 if ((tile < ACP_TILE_P1) || (tile > ACP_TILE_DSP2)) {
169 pr_err("Invalid ACP tile to resume\n");
173 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0 + tile);
174 val = val & ACP_TILE_ON_MASK;
177 cgs_write_register(cgs_dev, mmACP_PGFSM_CONFIG_REG,
179 count = ACP_TIMEOUT_LOOP;
181 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0
183 val = val & ACP_TILE_ON_MASK;
187 pr_err("Timeout reading ACP PGFSM status\n");
192 val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
193 if (tile == ACP_TILE_P1)
194 val = val & (ACP_TILE_P1_MASK);
195 else if (tile == ACP_TILE_P2)
196 val = val & (ACP_TILE_P2_MASK);
198 cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
203 struct acp_pm_domain {
205 struct generic_pm_domain gpd;
208 static int acp_poweroff(struct generic_pm_domain *genpd)
211 struct acp_pm_domain *apd;
213 apd = container_of(genpd, struct acp_pm_domain, gpd);
215 /* Donot return abruptly if any of power tile fails to suspend.
216 * Log it and continue powering off other tile
218 for (i = 4; i >= 0 ; i--) {
219 ret = acp_suspend_tile(apd->cgs_dev, ACP_TILE_P1 + i);
221 pr_err("ACP tile %d tile suspend failed\n", i);
227 static int acp_poweron(struct generic_pm_domain *genpd)
230 struct acp_pm_domain *apd;
232 apd = container_of(genpd, struct acp_pm_domain, gpd);
234 for (i = 0; i < 2; i++) {
235 ret = acp_resume_tile(apd->cgs_dev, ACP_TILE_P1 + i);
237 pr_err("ACP tile %d resume failed\n", i);
242 /* Disable DSPs which are not going to be used */
243 for (i = 0; i < 3; i++) {
244 ret = acp_suspend_tile(apd->cgs_dev, ACP_TILE_DSP0 + i);
245 /* Continue suspending other DSP, even if one fails */
247 pr_err("ACP DSP %d suspend failed\n", i);
253 static struct device *get_mfd_cell_dev(const char *device_name, int r)
255 char auto_dev_name[25];
258 snprintf(auto_dev_name, sizeof(auto_dev_name),
259 "%s.%d.auto", device_name, r);
260 dev = bus_find_device_by_name(&platform_bus_type, NULL, auto_dev_name);
261 dev_info(dev, "device %s added to pm domain\n", auto_dev_name);
267 * acp_hw_init - start and test ACP block
269 * @adev: amdgpu_device pointer
272 static int acp_hw_init(void *handle)
279 struct i2s_platform_data *i2s_pdata = NULL;
281 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
283 const struct amdgpu_ip_block *ip_block =
284 amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_ACP);
289 r = amd_acp_hw_init(adev->acp.cgs_device,
290 ip_block->version->major, ip_block->version->minor);
291 /* -ENODEV means board uses AZ rather than ACP */
297 if (adev->rmmio_size == 0 || adev->rmmio_size < 0x5289)
300 acp_base = adev->rmmio_base;
302 if (adev->asic_type != CHIP_STONEY) {
303 adev->acp.acp_genpd = kzalloc(sizeof(struct acp_pm_domain), GFP_KERNEL);
304 if (adev->acp.acp_genpd == NULL)
307 adev->acp.acp_genpd->gpd.name = "ACP_AUDIO";
308 adev->acp.acp_genpd->gpd.power_off = acp_poweroff;
309 adev->acp.acp_genpd->gpd.power_on = acp_poweron;
312 adev->acp.acp_genpd->cgs_dev = adev->acp.cgs_device;
314 pm_genpd_init(&adev->acp.acp_genpd->gpd, NULL, false);
317 adev->acp.acp_cell = kcalloc(ACP_DEVS, sizeof(struct mfd_cell),
320 if (adev->acp.acp_cell == NULL) {
325 adev->acp.acp_res = kcalloc(5, sizeof(struct resource), GFP_KERNEL);
326 if (adev->acp.acp_res == NULL) {
331 i2s_pdata = kcalloc(3, sizeof(struct i2s_platform_data), GFP_KERNEL);
332 if (i2s_pdata == NULL) {
337 switch (adev->asic_type) {
339 i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
340 DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
343 i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET;
345 i2s_pdata[0].cap = DWC_I2S_PLAY;
346 i2s_pdata[0].snd_rates = SNDRV_PCM_RATE_8000_96000;
347 i2s_pdata[0].i2s_reg_comp1 = ACP_I2S_COMP1_PLAY_REG_OFFSET;
348 i2s_pdata[0].i2s_reg_comp2 = ACP_I2S_COMP2_PLAY_REG_OFFSET;
349 switch (adev->asic_type) {
351 i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
352 DW_I2S_QUIRK_COMP_PARAM1 |
353 DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
356 i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
357 DW_I2S_QUIRK_COMP_PARAM1;
360 i2s_pdata[1].cap = DWC_I2S_RECORD;
361 i2s_pdata[1].snd_rates = SNDRV_PCM_RATE_8000_96000;
362 i2s_pdata[1].i2s_reg_comp1 = ACP_I2S_COMP1_CAP_REG_OFFSET;
363 i2s_pdata[1].i2s_reg_comp2 = ACP_I2S_COMP2_CAP_REG_OFFSET;
365 i2s_pdata[2].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET;
366 switch (adev->asic_type) {
368 i2s_pdata[2].quirks |= DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
374 i2s_pdata[2].cap = DWC_I2S_PLAY | DWC_I2S_RECORD;
375 i2s_pdata[2].snd_rates = SNDRV_PCM_RATE_8000_96000;
376 i2s_pdata[2].i2s_reg_comp1 = ACP_BT_COMP1_REG_OFFSET;
377 i2s_pdata[2].i2s_reg_comp2 = ACP_BT_COMP2_REG_OFFSET;
379 adev->acp.acp_res[0].name = "acp2x_dma";
380 adev->acp.acp_res[0].flags = IORESOURCE_MEM;
381 adev->acp.acp_res[0].start = acp_base;
382 adev->acp.acp_res[0].end = acp_base + ACP_DMA_REGS_END;
384 adev->acp.acp_res[1].name = "acp2x_dw_i2s_play";
385 adev->acp.acp_res[1].flags = IORESOURCE_MEM;
386 adev->acp.acp_res[1].start = acp_base + ACP_I2S_PLAY_REGS_START;
387 adev->acp.acp_res[1].end = acp_base + ACP_I2S_PLAY_REGS_END;
389 adev->acp.acp_res[2].name = "acp2x_dw_i2s_cap";
390 adev->acp.acp_res[2].flags = IORESOURCE_MEM;
391 adev->acp.acp_res[2].start = acp_base + ACP_I2S_CAP_REGS_START;
392 adev->acp.acp_res[2].end = acp_base + ACP_I2S_CAP_REGS_END;
394 adev->acp.acp_res[3].name = "acp2x_dw_bt_i2s_play_cap";
395 adev->acp.acp_res[3].flags = IORESOURCE_MEM;
396 adev->acp.acp_res[3].start = acp_base + ACP_BT_PLAY_REGS_START;
397 adev->acp.acp_res[3].end = acp_base + ACP_BT_PLAY_REGS_END;
399 adev->acp.acp_res[4].name = "acp2x_dma_irq";
400 adev->acp.acp_res[4].flags = IORESOURCE_IRQ;
401 adev->acp.acp_res[4].start = amdgpu_irq_create_mapping(adev, 162);
402 adev->acp.acp_res[4].end = adev->acp.acp_res[4].start;
404 adev->acp.acp_cell[0].name = "acp_audio_dma";
405 adev->acp.acp_cell[0].num_resources = 5;
406 adev->acp.acp_cell[0].resources = &adev->acp.acp_res[0];
407 adev->acp.acp_cell[0].platform_data = &adev->asic_type;
408 adev->acp.acp_cell[0].pdata_size = sizeof(adev->asic_type);
410 adev->acp.acp_cell[1].name = "designware-i2s";
411 adev->acp.acp_cell[1].num_resources = 1;
412 adev->acp.acp_cell[1].resources = &adev->acp.acp_res[1];
413 adev->acp.acp_cell[1].platform_data = &i2s_pdata[0];
414 adev->acp.acp_cell[1].pdata_size = sizeof(struct i2s_platform_data);
416 adev->acp.acp_cell[2].name = "designware-i2s";
417 adev->acp.acp_cell[2].num_resources = 1;
418 adev->acp.acp_cell[2].resources = &adev->acp.acp_res[2];
419 adev->acp.acp_cell[2].platform_data = &i2s_pdata[1];
420 adev->acp.acp_cell[2].pdata_size = sizeof(struct i2s_platform_data);
422 adev->acp.acp_cell[3].name = "designware-i2s";
423 adev->acp.acp_cell[3].num_resources = 1;
424 adev->acp.acp_cell[3].resources = &adev->acp.acp_res[3];
425 adev->acp.acp_cell[3].platform_data = &i2s_pdata[2];
426 adev->acp.acp_cell[3].pdata_size = sizeof(struct i2s_platform_data);
428 r = mfd_add_hotplug_devices(adev->acp.parent, adev->acp.acp_cell,
433 if (adev->asic_type != CHIP_STONEY) {
434 for (i = 0; i < ACP_DEVS ; i++) {
435 dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i);
436 r = pm_genpd_add_device(&adev->acp.acp_genpd->gpd, dev);
438 dev_err(dev, "Failed to add dev to genpd\n");
444 /* Assert Soft reset of ACP */
445 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
447 val |= ACP_SOFT_RESET__SoftResetAud_MASK;
448 cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
450 count = ACP_SOFT_RESET_DONE_TIME_OUT_VALUE;
452 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
453 if (ACP_SOFT_RESET__SoftResetAudDone_MASK ==
454 (val & ACP_SOFT_RESET__SoftResetAudDone_MASK))
457 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
463 /* Enable clock to ACP and wait until the clock is enabled */
464 val = cgs_read_register(adev->acp.cgs_device, mmACP_CONTROL);
465 val = val | ACP_CONTROL__ClkEn_MASK;
466 cgs_write_register(adev->acp.cgs_device, mmACP_CONTROL, val);
468 count = ACP_CLOCK_EN_TIME_OUT_VALUE;
471 val = cgs_read_register(adev->acp.cgs_device, mmACP_STATUS);
475 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
481 /* Deassert the SOFT RESET flags */
482 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
483 val &= ~ACP_SOFT_RESET__SoftResetAud_MASK;
484 cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
489 kfree(adev->acp.acp_res);
490 kfree(adev->acp.acp_cell);
491 kfree(adev->acp.acp_genpd);
496 * acp_hw_fini - stop the hardware block
498 * @adev: amdgpu_device pointer
501 static int acp_hw_fini(void *handle)
507 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
509 /* return early if no ACP */
510 if (!adev->acp.acp_cell)
513 /* Assert Soft reset of ACP */
514 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
516 val |= ACP_SOFT_RESET__SoftResetAud_MASK;
517 cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
519 count = ACP_SOFT_RESET_DONE_TIME_OUT_VALUE;
521 val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
522 if (ACP_SOFT_RESET__SoftResetAudDone_MASK ==
523 (val & ACP_SOFT_RESET__SoftResetAudDone_MASK))
526 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
531 /* Disable ACP clock */
532 val = cgs_read_register(adev->acp.cgs_device, mmACP_CONTROL);
533 val &= ~ACP_CONTROL__ClkEn_MASK;
534 cgs_write_register(adev->acp.cgs_device, mmACP_CONTROL, val);
536 count = ACP_CLOCK_EN_TIME_OUT_VALUE;
539 val = cgs_read_register(adev->acp.cgs_device, mmACP_STATUS);
543 dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
549 if (adev->acp.acp_genpd) {
550 for (i = 0; i < ACP_DEVS ; i++) {
551 dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i);
552 ret = pm_genpd_remove_device(dev);
553 /* If removal fails, dont giveup and try rest */
555 dev_err(dev, "remove dev from genpd failed\n");
557 kfree(adev->acp.acp_genpd);
560 mfd_remove_devices(adev->acp.parent);
561 kfree(adev->acp.acp_res);
562 kfree(adev->acp.acp_cell);
567 static int acp_suspend(void *handle)
572 static int acp_resume(void *handle)
577 static int acp_early_init(void *handle)
582 static bool acp_is_idle(void *handle)
587 static int acp_wait_for_idle(void *handle)
592 static int acp_soft_reset(void *handle)
597 static int acp_set_clockgating_state(void *handle,
598 enum amd_clockgating_state state)
603 static int acp_set_powergating_state(void *handle,
604 enum amd_powergating_state state)
609 static const struct amd_ip_funcs acp_ip_funcs = {
611 .early_init = acp_early_init,
613 .sw_init = acp_sw_init,
614 .sw_fini = acp_sw_fini,
615 .hw_init = acp_hw_init,
616 .hw_fini = acp_hw_fini,
617 .suspend = acp_suspend,
618 .resume = acp_resume,
619 .is_idle = acp_is_idle,
620 .wait_for_idle = acp_wait_for_idle,
621 .soft_reset = acp_soft_reset,
622 .set_clockgating_state = acp_set_clockgating_state,
623 .set_powergating_state = acp_set_powergating_state,
626 const struct amdgpu_ip_block_version acp_ip_block =
628 .type = AMD_IP_BLOCK_TYPE_ACP,
632 .funcs = &acp_ip_funcs,