drivers/gpu/drm/amd/amdgpu/amdgpu

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

DEFINITIONS
