1 /* 2 * sst_acpi.c - SST (LPE) driver init file for ACPI enumeration. 3 * 4 * Copyright (c) 2013, Intel Corporation. 5 * 6 * Authors: Ramesh Babu K V <Ramesh.Babu@intel.com> 7 * Authors: Omair Mohammed Abdullah <omair.m.abdullah@intel.com> 8 * 9 * This program is free software; you can redistribute it and/or modify it 10 * under the terms and conditions of the GNU General Public License, 11 * version 2, as published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope it will be useful, but WITHOUT 14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 16 * more details. 17 * 18 * 19 */ 20 21 #include <linux/module.h> 22 #include <linux/fs.h> 23 #include <linux/interrupt.h> 24 #include <linux/slab.h> 25 #include <linux/io.h> 26 #include <linux/platform_device.h> 27 #include <linux/firmware.h> 28 #include <linux/pm_runtime.h> 29 #include <linux/pm_qos.h> 30 #include <linux/dmi.h> 31 #include <linux/acpi.h> 32 #include <asm/platform_sst_audio.h> 33 #include <sound/core.h> 34 #include <sound/soc.h> 35 #include <sound/compress_driver.h> 36 #include <acpi/acbuffer.h> 37 #include <acpi/platform/acenv.h> 38 #include <acpi/platform/aclinux.h> 39 #include <acpi/actypes.h> 40 #include <acpi/acpi_bus.h> 41 #include <asm/cpu_device_id.h> 42 #include <asm/iosf_mbi.h> 43 #include <sound/soc-acpi.h> 44 #include <sound/soc-acpi-intel-match.h> 45 #include "../sst-mfld-platform.h" 46 #include "../../common/sst-dsp.h" 47 #include "sst.h" 48 49 /* LPE viewpoint addresses */ 50 #define SST_BYT_IRAM_PHY_START 0xff2c0000 51 #define SST_BYT_IRAM_PHY_END 0xff2d4000 52 #define SST_BYT_DRAM_PHY_START 0xff300000 53 #define SST_BYT_DRAM_PHY_END 0xff320000 54 #define SST_BYT_IMR_VIRT_START 0xc0000000 /* virtual addr in LPE */ 55 #define SST_BYT_IMR_VIRT_END 0xc01fffff 56 #define SST_BYT_SHIM_PHY_ADDR 0xff340000 57 #define SST_BYT_MBOX_PHY_ADDR 0xff344000 58 #define SST_BYT_DMA0_PHY_ADDR 0xff298000 59 #define SST_BYT_DMA1_PHY_ADDR 0xff29c000 60 #define SST_BYT_SSP0_PHY_ADDR 0xff2a0000 61 #define SST_BYT_SSP2_PHY_ADDR 0xff2a2000 62 63 #define BYT_FW_MOD_TABLE_OFFSET 0x80000 64 #define BYT_FW_MOD_TABLE_SIZE 0x100 65 #define BYT_FW_MOD_OFFSET (BYT_FW_MOD_TABLE_OFFSET + BYT_FW_MOD_TABLE_SIZE) 66 67 static const struct sst_info byt_fwparse_info = { 68 .use_elf = false, 69 .max_streams = 25, 70 .iram_start = SST_BYT_IRAM_PHY_START, 71 .iram_end = SST_BYT_IRAM_PHY_END, 72 .iram_use = true, 73 .dram_start = SST_BYT_DRAM_PHY_START, 74 .dram_end = SST_BYT_DRAM_PHY_END, 75 .dram_use = true, 76 .imr_start = SST_BYT_IMR_VIRT_START, 77 .imr_end = SST_BYT_IMR_VIRT_END, 78 .imr_use = true, 79 .mailbox_start = SST_BYT_MBOX_PHY_ADDR, 80 .num_probes = 0, 81 .lpe_viewpt_rqd = true, 82 }; 83 84 static const struct sst_ipc_info byt_ipc_info = { 85 .ipc_offset = 0, 86 .mbox_recv_off = 0x400, 87 }; 88 89 static const struct sst_lib_dnld_info byt_lib_dnld_info = { 90 .mod_base = SST_BYT_IMR_VIRT_START, 91 .mod_end = SST_BYT_IMR_VIRT_END, 92 .mod_table_offset = BYT_FW_MOD_TABLE_OFFSET, 93 .mod_table_size = BYT_FW_MOD_TABLE_SIZE, 94 .mod_ddr_dnld = false, 95 }; 96 97 static const struct sst_res_info byt_rvp_res_info = { 98 .shim_offset = 0x140000, 99 .shim_size = 0x000100, 100 .shim_phy_addr = SST_BYT_SHIM_PHY_ADDR, 101 .ssp0_offset = 0xa0000, 102 .ssp0_size = 0x1000, 103 .dma0_offset = 0x98000, 104 .dma0_size = 0x4000, 105 .dma1_offset = 0x9c000, 106 .dma1_size = 0x4000, 107 .iram_offset = 0x0c0000, 108 .iram_size = 0x14000, 109 .dram_offset = 0x100000, 110 .dram_size = 0x28000, 111 .mbox_offset = 0x144000, 112 .mbox_size = 0x1000, 113 .acpi_lpe_res_index = 0, 114 .acpi_ddr_index = 2, 115 .acpi_ipc_irq_index = 5, 116 }; 117 118 /* BYTCR has different BIOS from BYT */ 119 static const struct sst_res_info bytcr_res_info = { 120 .shim_offset = 0x140000, 121 .shim_size = 0x000100, 122 .shim_phy_addr = SST_BYT_SHIM_PHY_ADDR, 123 .ssp0_offset = 0xa0000, 124 .ssp0_size = 0x1000, 125 .dma0_offset = 0x98000, 126 .dma0_size = 0x4000, 127 .dma1_offset = 0x9c000, 128 .dma1_size = 0x4000, 129 .iram_offset = 0x0c0000, 130 .iram_size = 0x14000, 131 .dram_offset = 0x100000, 132 .dram_size = 0x28000, 133 .mbox_offset = 0x144000, 134 .mbox_size = 0x1000, 135 .acpi_lpe_res_index = 0, 136 .acpi_ddr_index = 2, 137 .acpi_ipc_irq_index = 0 138 }; 139 140 static struct sst_platform_info byt_rvp_platform_data = { 141 .probe_data = &byt_fwparse_info, 142 .ipc_info = &byt_ipc_info, 143 .lib_info = &byt_lib_dnld_info, 144 .res_info = &byt_rvp_res_info, 145 .platform = "sst-mfld-platform", 146 .streams_lost_on_suspend = true, 147 }; 148 149 /* Cherryview (Cherrytrail and Braswell) uses same mrfld dpcm fw as Baytrail, 150 * so pdata is same as Baytrail, minus the streams_lost_on_suspend quirk. 151 */ 152 static struct sst_platform_info chv_platform_data = { 153 .probe_data = &byt_fwparse_info, 154 .ipc_info = &byt_ipc_info, 155 .lib_info = &byt_lib_dnld_info, 156 .res_info = &byt_rvp_res_info, 157 .platform = "sst-mfld-platform", 158 }; 159 160 static int sst_platform_get_resources(struct intel_sst_drv *ctx) 161 { 162 struct resource *rsrc; 163 struct platform_device *pdev = to_platform_device(ctx->dev); 164 165 /* All ACPI resource request here */ 166 /* Get Shim addr */ 167 rsrc = platform_get_resource(pdev, IORESOURCE_MEM, 168 ctx->pdata->res_info->acpi_lpe_res_index); 169 if (!rsrc) { 170 dev_err(ctx->dev, "Invalid SHIM base from IFWI\n"); 171 return -EIO; 172 } 173 dev_info(ctx->dev, "LPE base: %#x size:%#x", (unsigned int) rsrc->start, 174 (unsigned int)resource_size(rsrc)); 175 176 ctx->iram_base = rsrc->start + ctx->pdata->res_info->iram_offset; 177 ctx->iram_end = ctx->iram_base + ctx->pdata->res_info->iram_size - 1; 178 dev_info(ctx->dev, "IRAM base: %#x", ctx->iram_base); 179 ctx->iram = devm_ioremap_nocache(ctx->dev, ctx->iram_base, 180 ctx->pdata->res_info->iram_size); 181 if (!ctx->iram) { 182 dev_err(ctx->dev, "unable to map IRAM\n"); 183 return -EIO; 184 } 185 186 ctx->dram_base = rsrc->start + ctx->pdata->res_info->dram_offset; 187 ctx->dram_end = ctx->dram_base + ctx->pdata->res_info->dram_size - 1; 188 dev_info(ctx->dev, "DRAM base: %#x", ctx->dram_base); 189 ctx->dram = devm_ioremap_nocache(ctx->dev, ctx->dram_base, 190 ctx->pdata->res_info->dram_size); 191 if (!ctx->dram) { 192 dev_err(ctx->dev, "unable to map DRAM\n"); 193 return -EIO; 194 } 195 196 ctx->shim_phy_add = rsrc->start + ctx->pdata->res_info->shim_offset; 197 dev_info(ctx->dev, "SHIM base: %#x", ctx->shim_phy_add); 198 ctx->shim = devm_ioremap_nocache(ctx->dev, ctx->shim_phy_add, 199 ctx->pdata->res_info->shim_size); 200 if (!ctx->shim) { 201 dev_err(ctx->dev, "unable to map SHIM\n"); 202 return -EIO; 203 } 204 205 /* reassign physical address to LPE viewpoint address */ 206 ctx->shim_phy_add = ctx->pdata->res_info->shim_phy_addr; 207 208 /* Get mailbox addr */ 209 ctx->mailbox_add = rsrc->start + ctx->pdata->res_info->mbox_offset; 210 dev_info(ctx->dev, "Mailbox base: %#x", ctx->mailbox_add); 211 ctx->mailbox = devm_ioremap_nocache(ctx->dev, ctx->mailbox_add, 212 ctx->pdata->res_info->mbox_size); 213 if (!ctx->mailbox) { 214 dev_err(ctx->dev, "unable to map mailbox\n"); 215 return -EIO; 216 } 217 218 /* reassign physical address to LPE viewpoint address */ 219 ctx->mailbox_add = ctx->info.mailbox_start; 220 221 rsrc = platform_get_resource(pdev, IORESOURCE_MEM, 222 ctx->pdata->res_info->acpi_ddr_index); 223 if (!rsrc) { 224 dev_err(ctx->dev, "Invalid DDR base from IFWI\n"); 225 return -EIO; 226 } 227 ctx->ddr_base = rsrc->start; 228 ctx->ddr_end = rsrc->end; 229 dev_info(ctx->dev, "DDR base: %#x", ctx->ddr_base); 230 ctx->ddr = devm_ioremap_nocache(ctx->dev, ctx->ddr_base, 231 resource_size(rsrc)); 232 if (!ctx->ddr) { 233 dev_err(ctx->dev, "unable to map DDR\n"); 234 return -EIO; 235 } 236 237 /* Find the IRQ */ 238 ctx->irq_num = platform_get_irq(pdev, 239 ctx->pdata->res_info->acpi_ipc_irq_index); 240 if (ctx->irq_num <= 0) 241 return ctx->irq_num < 0 ? ctx->irq_num : -EIO; 242 243 return 0; 244 } 245 246 static int is_byt(void) 247 { 248 bool status = false; 249 static const struct x86_cpu_id cpu_ids[] = { 250 { X86_VENDOR_INTEL, 6, 55 }, /* Valleyview, Bay Trail */ 251 {} 252 }; 253 if (x86_match_cpu(cpu_ids)) 254 status = true; 255 return status; 256 } 257 258 static int is_byt_cr(struct device *dev, bool *bytcr) 259 { 260 int status = 0; 261 262 if (IS_ENABLED(CONFIG_IOSF_MBI)) { 263 u32 bios_status; 264 265 if (!is_byt() || !iosf_mbi_available()) { 266 /* bail silently */ 267 return status; 268 } 269 270 status = iosf_mbi_read(BT_MBI_UNIT_PMC, /* 0x04 PUNIT */ 271 MBI_REG_READ, /* 0x10 */ 272 0x006, /* BIOS_CONFIG */ 273 &bios_status); 274 275 if (status) { 276 dev_err(dev, "could not read PUNIT BIOS_CONFIG\n"); 277 } else { 278 /* bits 26:27 mirror PMIC options */ 279 bios_status = (bios_status >> 26) & 3; 280 281 if ((bios_status == 1) || (bios_status == 3)) 282 *bytcr = true; 283 else 284 dev_info(dev, "BYT-CR not detected\n"); 285 } 286 } else { 287 dev_info(dev, "IOSF_MBI not enabled, no BYT-CR detection\n"); 288 } 289 return status; 290 } 291 292 293 static int sst_acpi_probe(struct platform_device *pdev) 294 { 295 struct device *dev = &pdev->dev; 296 int ret = 0; 297 struct intel_sst_drv *ctx; 298 const struct acpi_device_id *id; 299 struct snd_soc_acpi_mach *mach; 300 struct platform_device *mdev; 301 struct platform_device *plat_dev; 302 struct sst_platform_info *pdata; 303 unsigned int dev_id; 304 bool bytcr = false; 305 306 id = acpi_match_device(dev->driver->acpi_match_table, dev); 307 if (!id) 308 return -ENODEV; 309 dev_dbg(dev, "for %s\n", id->id); 310 311 mach = (struct snd_soc_acpi_mach *)id->driver_data; 312 mach = snd_soc_acpi_find_machine(mach); 313 if (mach == NULL) { 314 dev_err(dev, "No matching machine driver found\n"); 315 return -ENODEV; 316 } 317 318 if (is_byt()) 319 mach->pdata = &byt_rvp_platform_data; 320 else 321 mach->pdata = &chv_platform_data; 322 pdata = mach->pdata; 323 324 ret = kstrtouint(id->id, 16, &dev_id); 325 if (ret < 0) { 326 dev_err(dev, "Unique device id conversion error: %d\n", ret); 327 return ret; 328 } 329 330 dev_dbg(dev, "ACPI device id: %x\n", dev_id); 331 332 ret = sst_alloc_drv_context(&ctx, dev, dev_id); 333 if (ret < 0) 334 return ret; 335 336 ret = is_byt_cr(dev, &bytcr); 337 if (!((ret < 0) || (bytcr == false))) { 338 dev_info(dev, "Detected Baytrail-CR platform\n"); 339 340 /* override resource info */ 341 byt_rvp_platform_data.res_info = &bytcr_res_info; 342 } 343 344 plat_dev = platform_device_register_data(dev, pdata->platform, -1, 345 NULL, 0); 346 if (IS_ERR(plat_dev)) { 347 dev_err(dev, "Failed to create machine device: %s\n", 348 pdata->platform); 349 return PTR_ERR(plat_dev); 350 } 351 352 /* 353 * Create platform device for sst machine driver, 354 * pass machine info as pdata 355 */ 356 mdev = platform_device_register_data(dev, mach->drv_name, -1, 357 (const void *)mach, sizeof(*mach)); 358 if (IS_ERR(mdev)) { 359 dev_err(dev, "Failed to create machine device: %s\n", 360 mach->drv_name); 361 return PTR_ERR(mdev); 362 } 363 364 /* Fill sst platform data */ 365 ctx->pdata = pdata; 366 strcpy(ctx->firmware_name, mach->fw_filename); 367 368 ret = sst_platform_get_resources(ctx); 369 if (ret) 370 return ret; 371 372 ret = sst_context_init(ctx); 373 if (ret < 0) 374 return ret; 375 376 sst_configure_runtime_pm(ctx); 377 platform_set_drvdata(pdev, ctx); 378 return ret; 379 } 380 381 /** 382 * intel_sst_remove - remove function 383 * 384 * @pdev: platform device structure 385 * 386 * This function is called by OS when a device is unloaded 387 * This frees the interrupt etc 388 */ 389 static int sst_acpi_remove(struct platform_device *pdev) 390 { 391 struct intel_sst_drv *ctx; 392 393 ctx = platform_get_drvdata(pdev); 394 sst_context_cleanup(ctx); 395 platform_set_drvdata(pdev, NULL); 396 return 0; 397 } 398 399 static const struct acpi_device_id sst_acpi_ids[] = { 400 { "80860F28", (unsigned long)&snd_soc_acpi_intel_baytrail_machines}, 401 { "808622A8", (unsigned long)&snd_soc_acpi_intel_cherrytrail_machines}, 402 { }, 403 }; 404 405 MODULE_DEVICE_TABLE(acpi, sst_acpi_ids); 406 407 static struct platform_driver sst_acpi_driver = { 408 .driver = { 409 .name = "intel_sst_acpi", 410 .acpi_match_table = ACPI_PTR(sst_acpi_ids), 411 .pm = &intel_sst_pm, 412 }, 413 .probe = sst_acpi_probe, 414 .remove = sst_acpi_remove, 415 }; 416 417 module_platform_driver(sst_acpi_driver); 418 419 MODULE_DESCRIPTION("Intel (R) SST(R) Audio Engine ACPI Driver"); 420 MODULE_AUTHOR("Ramesh Babu K V"); 421 MODULE_AUTHOR("Omair Mohammed Abdullah"); 422 MODULE_LICENSE("GPL v2"); 423 MODULE_ALIAS("sst"); 424