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
61 #define mmACP_PGFSM_RETAIN_REG 0x51c9
62 #define mmACP_PGFSM_CONFIG_REG 0x51ca
63 #define mmACP_PGFSM_READ_REG_0 0x51cc
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
70 #define ACP_TIMEOUT_LOOP 0x000000FF
72 #define ACP_SRC_ID 162
82 static int acp_sw_init(void *handle)
84 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
86 adev->acp.parent = adev->dev;
88 adev->acp.cgs_device =
89 amdgpu_cgs_create_device(adev);
90 if (!adev->acp.cgs_device)
96 static int acp_sw_fini(void *handle)
98 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
100 if (adev->acp.cgs_device)
101 amdgpu_cgs_destroy_device(adev->acp.cgs_device);
106 /* power off a tile/block within ACP */
107 static int acp_suspend_tile(void *cgs_dev, int tile)
112 if ((tile < ACP_TILE_P1) || (tile > ACP_TILE_DSP2)) {
113 pr_err("Invalid ACP tile : %d to suspend\n", tile);
117 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0 + tile);
118 val &= ACP_TILE_ON_MASK;
121 val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
122 val = val | (1 << tile);
123 cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
124 cgs_write_register(cgs_dev, mmACP_PGFSM_CONFIG_REG,
127 count = ACP_TIMEOUT_LOOP;
129 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0
131 val = val & ACP_TILE_ON_MASK;
132 if (val == ACP_TILE_OFF_MASK)
135 pr_err("Timeout reading ACP PGFSM status\n");
141 val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
143 val |= ACP_TILE_OFF_RETAIN_REG_MASK;
144 cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
149 /* power on a tile/block within ACP */
150 static int acp_resume_tile(void *cgs_dev, int tile)
155 if ((tile < ACP_TILE_P1) || (tile > ACP_TILE_DSP2)) {
156 pr_err("Invalid ACP tile to resume\n");
160 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0 + tile);
161 val = val & ACP_TILE_ON_MASK;
164 cgs_write_register(cgs_dev, mmACP_PGFSM_CONFIG_REG,
166 count = ACP_TIMEOUT_LOOP;
168 val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0
170 val = val & ACP_TILE_ON_MASK;
174 pr_err("Timeout reading ACP PGFSM status\n");
179 val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
180 if (tile == ACP_TILE_P1)
181 val = val & (ACP_TILE_P1_MASK);
182 else if (tile == ACP_TILE_P2)
183 val = val & (ACP_TILE_P2_MASK);
185 cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
190 struct acp_pm_domain {
192 struct generic_pm_domain gpd;
195 static int acp_poweroff(struct generic_pm_domain *genpd)
198 struct acp_pm_domain *apd;
200 apd = container_of(genpd, struct acp_pm_domain, gpd);
202 /* Donot return abruptly if any of power tile fails to suspend.
203 * Log it and continue powering off other tile
205 for (i = 4; i >= 0 ; i--) {
206 ret = acp_suspend_tile(apd->cgs_dev, ACP_TILE_P1 + i);
208 pr_err("ACP tile %d tile suspend failed\n", i);
214 static int acp_poweron(struct generic_pm_domain *genpd)
217 struct acp_pm_domain *apd;
219 apd = container_of(genpd, struct acp_pm_domain, gpd);
221 for (i = 0; i < 2; i++) {
222 ret = acp_resume_tile(apd->cgs_dev, ACP_TILE_P1 + i);
224 pr_err("ACP tile %d resume failed\n", i);
229 /* Disable DSPs which are not going to be used */
230 for (i = 0; i < 3; i++) {
231 ret = acp_suspend_tile(apd->cgs_dev, ACP_TILE_DSP0 + i);
232 /* Continue suspending other DSP, even if one fails */
234 pr_err("ACP DSP %d suspend failed\n", i);
240 static struct device *get_mfd_cell_dev(const char *device_name, int r)
242 char auto_dev_name[25];
245 snprintf(auto_dev_name, sizeof(auto_dev_name),
246 "%s.%d.auto", device_name, r);
247 dev = bus_find_device_by_name(&platform_bus_type, NULL, auto_dev_name);
248 dev_info(dev, "device %s added to pm domain\n", auto_dev_name);
254 * acp_hw_init - start and test ACP block
256 * @adev: amdgpu_device pointer
259 static int acp_hw_init(void *handle)
264 struct i2s_platform_data *i2s_pdata;
266 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
268 const struct amdgpu_ip_block *ip_block =
269 amdgpu_get_ip_block(adev, AMD_IP_BLOCK_TYPE_ACP);
274 r = amd_acp_hw_init(adev->acp.cgs_device,
275 ip_block->version->major, ip_block->version->minor);
276 /* -ENODEV means board uses AZ rather than ACP */
282 r = cgs_get_pci_resource(adev->acp.cgs_device, CGS_RESOURCE_TYPE_MMIO,
283 0x5289, 0, &acp_base);
289 adev->acp.acp_genpd = kzalloc(sizeof(struct acp_pm_domain), GFP_KERNEL);
290 if (adev->acp.acp_genpd == NULL)
293 adev->acp.acp_genpd->gpd.name = "ACP_AUDIO";
294 adev->acp.acp_genpd->gpd.power_off = acp_poweroff;
295 adev->acp.acp_genpd->gpd.power_on = acp_poweron;
298 adev->acp.acp_genpd->cgs_dev = adev->acp.cgs_device;
300 pm_genpd_init(&adev->acp.acp_genpd->gpd, NULL, false);
302 adev->acp.acp_cell = kzalloc(sizeof(struct mfd_cell) * ACP_DEVS,
305 if (adev->acp.acp_cell == NULL)
308 adev->acp.acp_res = kzalloc(sizeof(struct resource) * 4, GFP_KERNEL);
310 if (adev->acp.acp_res == NULL) {
311 kfree(adev->acp.acp_cell);
315 i2s_pdata = kzalloc(sizeof(struct i2s_platform_data) * 2, GFP_KERNEL);
316 if (i2s_pdata == NULL) {
317 kfree(adev->acp.acp_res);
318 kfree(adev->acp.acp_cell);
322 i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET;
323 i2s_pdata[0].cap = DWC_I2S_PLAY;
324 i2s_pdata[0].snd_rates = SNDRV_PCM_RATE_8000_96000;
325 i2s_pdata[0].i2s_reg_comp1 = ACP_I2S_COMP1_PLAY_REG_OFFSET;
326 i2s_pdata[0].i2s_reg_comp2 = ACP_I2S_COMP2_PLAY_REG_OFFSET;
328 i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
329 DW_I2S_QUIRK_COMP_PARAM1;
330 i2s_pdata[1].cap = DWC_I2S_RECORD;
331 i2s_pdata[1].snd_rates = SNDRV_PCM_RATE_8000_96000;
332 i2s_pdata[1].i2s_reg_comp1 = ACP_I2S_COMP1_CAP_REG_OFFSET;
333 i2s_pdata[1].i2s_reg_comp2 = ACP_I2S_COMP2_CAP_REG_OFFSET;
335 adev->acp.acp_res[0].name = "acp2x_dma";
336 adev->acp.acp_res[0].flags = IORESOURCE_MEM;
337 adev->acp.acp_res[0].start = acp_base;
338 adev->acp.acp_res[0].end = acp_base + ACP_DMA_REGS_END;
340 adev->acp.acp_res[1].name = "acp2x_dw_i2s_play";
341 adev->acp.acp_res[1].flags = IORESOURCE_MEM;
342 adev->acp.acp_res[1].start = acp_base + ACP_I2S_PLAY_REGS_START;
343 adev->acp.acp_res[1].end = acp_base + ACP_I2S_PLAY_REGS_END;
345 adev->acp.acp_res[2].name = "acp2x_dw_i2s_cap";
346 adev->acp.acp_res[2].flags = IORESOURCE_MEM;
347 adev->acp.acp_res[2].start = acp_base + ACP_I2S_CAP_REGS_START;
348 adev->acp.acp_res[2].end = acp_base + ACP_I2S_CAP_REGS_END;
350 adev->acp.acp_res[3].name = "acp2x_dma_irq";
351 adev->acp.acp_res[3].flags = IORESOURCE_IRQ;
352 adev->acp.acp_res[3].start = amdgpu_irq_create_mapping(adev, 162);
353 adev->acp.acp_res[3].end = adev->acp.acp_res[3].start;
355 adev->acp.acp_cell[0].name = "acp_audio_dma";
356 adev->acp.acp_cell[0].num_resources = 4;
357 adev->acp.acp_cell[0].resources = &adev->acp.acp_res[0];
359 adev->acp.acp_cell[1].name = "designware-i2s";
360 adev->acp.acp_cell[1].num_resources = 1;
361 adev->acp.acp_cell[1].resources = &adev->acp.acp_res[1];
362 adev->acp.acp_cell[1].platform_data = &i2s_pdata[0];
363 adev->acp.acp_cell[1].pdata_size = sizeof(struct i2s_platform_data);
365 adev->acp.acp_cell[2].name = "designware-i2s";
366 adev->acp.acp_cell[2].num_resources = 1;
367 adev->acp.acp_cell[2].resources = &adev->acp.acp_res[2];
368 adev->acp.acp_cell[2].platform_data = &i2s_pdata[1];
369 adev->acp.acp_cell[2].pdata_size = sizeof(struct i2s_platform_data);
371 r = mfd_add_hotplug_devices(adev->acp.parent, adev->acp.acp_cell,
376 for (i = 0; i < ACP_DEVS ; i++) {
377 dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i);
378 r = pm_genpd_add_device(&adev->acp.acp_genpd->gpd, dev);
380 dev_err(dev, "Failed to add dev to genpd\n");
389 * acp_hw_fini - stop the hardware block
391 * @adev: amdgpu_device pointer
394 static int acp_hw_fini(void *handle)
398 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
400 /* return early if no ACP */
401 if (!adev->acp.acp_genpd)
404 for (i = 0; i < ACP_DEVS ; i++) {
405 dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i);
406 ret = pm_genpd_remove_device(&adev->acp.acp_genpd->gpd, dev);
407 /* If removal fails, dont giveup and try rest */
409 dev_err(dev, "remove dev from genpd failed\n");
412 mfd_remove_devices(adev->acp.parent);
413 kfree(adev->acp.acp_res);
414 kfree(adev->acp.acp_genpd);
415 kfree(adev->acp.acp_cell);
420 static int acp_suspend(void *handle)
425 static int acp_resume(void *handle)
430 static int acp_early_init(void *handle)
435 static bool acp_is_idle(void *handle)
440 static int acp_wait_for_idle(void *handle)
445 static int acp_soft_reset(void *handle)
450 static int acp_set_clockgating_state(void *handle,
451 enum amd_clockgating_state state)
456 static int acp_set_powergating_state(void *handle,
457 enum amd_powergating_state state)
462 static const struct amd_ip_funcs acp_ip_funcs = {
464 .early_init = acp_early_init,
466 .sw_init = acp_sw_init,
467 .sw_fini = acp_sw_fini,
468 .hw_init = acp_hw_init,
469 .hw_fini = acp_hw_fini,
470 .suspend = acp_suspend,
471 .resume = acp_resume,
472 .is_idle = acp_is_idle,
473 .wait_for_idle = acp_wait_for_idle,
474 .soft_reset = acp_soft_reset,
475 .set_clockgating_state = acp_set_clockgating_state,
476 .set_powergating_state = acp_set_powergating_state,
479 const struct amdgpu_ip_block_version acp_ip_block =
481 .type = AMD_IP_BLOCK_TYPE_ACP,
485 .funcs = &acp_ip_funcs,