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/miscdevice.h> 27#include <linux/platform_device.h> 28#include <linux/firmware.h> 29#include <linux/pm_runtime.h> 30#include <linux/pm_qos.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 "../sst-mfld-platform.h" 42#include "../../common/sst-dsp.h" 43#include "sst.h" 44 45struct sst_machines { 46 char *codec_id; 47 char board[32]; 48 char machine[32]; 49 void (*machine_quirk)(void); 50 char firmware[FW_NAME_SIZE]; 51 struct sst_platform_info *pdata; 52 53}; 54 55/* LPE viewpoint addresses */ 56#define SST_BYT_IRAM_PHY_START 0xff2c0000 57#define SST_BYT_IRAM_PHY_END 0xff2d4000 58#define SST_BYT_DRAM_PHY_START 0xff300000 59#define SST_BYT_DRAM_PHY_END 0xff320000 60#define SST_BYT_IMR_VIRT_START 0xc0000000 /* virtual addr in LPE */ 61#define SST_BYT_IMR_VIRT_END 0xc01fffff 62#define SST_BYT_SHIM_PHY_ADDR 0xff340000 63#define SST_BYT_MBOX_PHY_ADDR 0xff344000 64#define SST_BYT_DMA0_PHY_ADDR 0xff298000 65#define SST_BYT_DMA1_PHY_ADDR 0xff29c000 66#define SST_BYT_SSP0_PHY_ADDR 0xff2a0000 67#define SST_BYT_SSP2_PHY_ADDR 0xff2a2000 68 69#define BYT_FW_MOD_TABLE_OFFSET 0x80000 70#define BYT_FW_MOD_TABLE_SIZE 0x100 71#define BYT_FW_MOD_OFFSET (BYT_FW_MOD_TABLE_OFFSET + BYT_FW_MOD_TABLE_SIZE) 72 73static const struct sst_info byt_fwparse_info = { 74 .use_elf = false, 75 .max_streams = 25, 76 .iram_start = SST_BYT_IRAM_PHY_START, 77 .iram_end = SST_BYT_IRAM_PHY_END, 78 .iram_use = true, 79 .dram_start = SST_BYT_DRAM_PHY_START, 80 .dram_end = SST_BYT_DRAM_PHY_END, 81 .dram_use = true, 82 .imr_start = SST_BYT_IMR_VIRT_START, 83 .imr_end = SST_BYT_IMR_VIRT_END, 84 .imr_use = true, 85 .mailbox_start = SST_BYT_MBOX_PHY_ADDR, 86 .num_probes = 0, 87 .lpe_viewpt_rqd = true, 88}; 89 90static const struct sst_ipc_info byt_ipc_info = { 91 .ipc_offset = 0, 92 .mbox_recv_off = 0x400, 93}; 94 95static const struct sst_lib_dnld_info byt_lib_dnld_info = { 96 .mod_base = SST_BYT_IMR_VIRT_START, 97 .mod_end = SST_BYT_IMR_VIRT_END, 98 .mod_table_offset = BYT_FW_MOD_TABLE_OFFSET, 99 .mod_table_size = BYT_FW_MOD_TABLE_SIZE, 100 .mod_ddr_dnld = false, 101}; 102 103static const struct sst_res_info byt_rvp_res_info = { 104 .shim_offset = 0x140000, 105 .shim_size = 0x000100, 106 .shim_phy_addr = SST_BYT_SHIM_PHY_ADDR, 107 .ssp0_offset = 0xa0000, 108 .ssp0_size = 0x1000, 109 .dma0_offset = 0x98000, 110 .dma0_size = 0x4000, 111 .dma1_offset = 0x9c000, 112 .dma1_size = 0x4000, 113 .iram_offset = 0x0c0000, 114 .iram_size = 0x14000, 115 .dram_offset = 0x100000, 116 .dram_size = 0x28000, 117 .mbox_offset = 0x144000, 118 .mbox_size = 0x1000, 119 .acpi_lpe_res_index = 0, 120 .acpi_ddr_index = 2, 121 .acpi_ipc_irq_index = 5, 122}; 123 124static struct sst_platform_info byt_rvp_platform_data = { 125 .probe_data = &byt_fwparse_info, 126 .ipc_info = &byt_ipc_info, 127 .lib_info = &byt_lib_dnld_info, 128 .res_info = &byt_rvp_res_info, 129 .platform = "sst-mfld-platform", 130}; 131 132/* Cherryview (Cherrytrail and Braswell) uses same mrfld dpcm fw as Baytrail, 133 * so pdata is same as Baytrail. 134 */ 135static struct sst_platform_info chv_platform_data = { 136 .probe_data = &byt_fwparse_info, 137 .ipc_info = &byt_ipc_info, 138 .lib_info = &byt_lib_dnld_info, 139 .res_info = &byt_rvp_res_info, 140 .platform = "sst-mfld-platform", 141}; 142 143static int sst_platform_get_resources(struct intel_sst_drv *ctx) 144{ 145 struct resource *rsrc; 146 struct platform_device *pdev = to_platform_device(ctx->dev); 147 148 /* All ACPI resource request here */ 149 /* Get Shim addr */ 150 rsrc = platform_get_resource(pdev, IORESOURCE_MEM, 151 ctx->pdata->res_info->acpi_lpe_res_index); 152 if (!rsrc) { 153 dev_err(ctx->dev, "Invalid SHIM base from IFWI"); 154 return -EIO; 155 } 156 dev_info(ctx->dev, "LPE base: %#x size:%#x", (unsigned int) rsrc->start, 157 (unsigned int)resource_size(rsrc)); 158 159 ctx->iram_base = rsrc->start + ctx->pdata->res_info->iram_offset; 160 ctx->iram_end = ctx->iram_base + ctx->pdata->res_info->iram_size - 1; 161 dev_info(ctx->dev, "IRAM base: %#x", ctx->iram_base); 162 ctx->iram = devm_ioremap_nocache(ctx->dev, ctx->iram_base, 163 ctx->pdata->res_info->iram_size); 164 if (!ctx->iram) { 165 dev_err(ctx->dev, "unable to map IRAM"); 166 return -EIO; 167 } 168 169 ctx->dram_base = rsrc->start + ctx->pdata->res_info->dram_offset; 170 ctx->dram_end = ctx->dram_base + ctx->pdata->res_info->dram_size - 1; 171 dev_info(ctx->dev, "DRAM base: %#x", ctx->dram_base); 172 ctx->dram = devm_ioremap_nocache(ctx->dev, ctx->dram_base, 173 ctx->pdata->res_info->dram_size); 174 if (!ctx->dram) { 175 dev_err(ctx->dev, "unable to map DRAM"); 176 return -EIO; 177 } 178 179 ctx->shim_phy_add = rsrc->start + ctx->pdata->res_info->shim_offset; 180 dev_info(ctx->dev, "SHIM base: %#x", ctx->shim_phy_add); 181 ctx->shim = devm_ioremap_nocache(ctx->dev, ctx->shim_phy_add, 182 ctx->pdata->res_info->shim_size); 183 if (!ctx->shim) { 184 dev_err(ctx->dev, "unable to map SHIM"); 185 return -EIO; 186 } 187 188 /* reassign physical address to LPE viewpoint address */ 189 ctx->shim_phy_add = ctx->pdata->res_info->shim_phy_addr; 190 191 /* Get mailbox addr */ 192 ctx->mailbox_add = rsrc->start + ctx->pdata->res_info->mbox_offset; 193 dev_info(ctx->dev, "Mailbox base: %#x", ctx->mailbox_add); 194 ctx->mailbox = devm_ioremap_nocache(ctx->dev, ctx->mailbox_add, 195 ctx->pdata->res_info->mbox_size); 196 if (!ctx->mailbox) { 197 dev_err(ctx->dev, "unable to map mailbox"); 198 return -EIO; 199 } 200 201 /* reassign physical address to LPE viewpoint address */ 202 ctx->mailbox_add = ctx->info.mailbox_start; 203 204 rsrc = platform_get_resource(pdev, IORESOURCE_MEM, 205 ctx->pdata->res_info->acpi_ddr_index); 206 if (!rsrc) { 207 dev_err(ctx->dev, "Invalid DDR base from IFWI"); 208 return -EIO; 209 } 210 ctx->ddr_base = rsrc->start; 211 ctx->ddr_end = rsrc->end; 212 dev_info(ctx->dev, "DDR base: %#x", ctx->ddr_base); 213 ctx->ddr = devm_ioremap_nocache(ctx->dev, ctx->ddr_base, 214 resource_size(rsrc)); 215 if (!ctx->ddr) { 216 dev_err(ctx->dev, "unable to map DDR"); 217 return -EIO; 218 } 219 220 /* Find the IRQ */ 221 ctx->irq_num = platform_get_irq(pdev, 222 ctx->pdata->res_info->acpi_ipc_irq_index); 223 return 0; 224} 225 226static acpi_status sst_acpi_mach_match(acpi_handle handle, u32 level, 227 void *context, void **ret) 228{ 229 *(bool *)context = true; 230 return AE_OK; 231} 232 233static struct sst_machines *sst_acpi_find_machine( 234 struct sst_machines *machines) 235{ 236 struct sst_machines *mach; 237 bool found = false; 238 239 for (mach = machines; mach->codec_id; mach++) 240 if (ACPI_SUCCESS(acpi_get_devices(mach->codec_id, 241 sst_acpi_mach_match, 242 &found, NULL)) && found) 243 return mach; 244 245 return NULL; 246} 247 248static int sst_acpi_probe(struct platform_device *pdev) 249{ 250 struct device *dev = &pdev->dev; 251 int ret = 0; 252 struct intel_sst_drv *ctx; 253 const struct acpi_device_id *id; 254 struct sst_machines *mach; 255 struct platform_device *mdev; 256 struct platform_device *plat_dev; 257 unsigned int dev_id; 258 259 id = acpi_match_device(dev->driver->acpi_match_table, dev); 260 if (!id) 261 return -ENODEV; 262 dev_dbg(dev, "for %s", id->id); 263 264 mach = (struct sst_machines *)id->driver_data; 265 mach = sst_acpi_find_machine(mach); 266 if (mach == NULL) { 267 dev_err(dev, "No matching machine driver found\n"); 268 return -ENODEV; 269 } 270 271 ret = kstrtouint(id->id, 16, &dev_id); 272 if (ret < 0) { 273 dev_err(dev, "Unique device id conversion error: %d\n", ret); 274 return ret; 275 } 276 277 dev_dbg(dev, "ACPI device id: %x\n", dev_id); 278 279 plat_dev = platform_device_register_data(dev, mach->pdata->platform, -1, NULL, 0); 280 if (IS_ERR(plat_dev)) { 281 dev_err(dev, "Failed to create machine device: %s\n", mach->pdata->platform); 282 return PTR_ERR(plat_dev); 283 } 284 285 /* Create platform device for sst machine driver */ 286 mdev = platform_device_register_data(dev, mach->machine, -1, NULL, 0); 287 if (IS_ERR(mdev)) { 288 dev_err(dev, "Failed to create machine device: %s\n", mach->machine); 289 return PTR_ERR(mdev); 290 } 291 292 ret = sst_alloc_drv_context(&ctx, dev, dev_id); 293 if (ret < 0) 294 return ret; 295 296 /* Fill sst platform data */ 297 ctx->pdata = mach->pdata; 298 strcpy(ctx->firmware_name, mach->firmware); 299 300 ret = sst_platform_get_resources(ctx); 301 if (ret) 302 return ret; 303 304 ret = sst_context_init(ctx); 305 if (ret < 0) 306 return ret; 307 308 /* need to save shim registers in BYT */ 309 ctx->shim_regs64 = devm_kzalloc(ctx->dev, sizeof(*ctx->shim_regs64), 310 GFP_KERNEL); 311 if (!ctx->shim_regs64) { 312 ret = -ENOMEM; 313 goto do_sst_cleanup; 314 } 315 316 sst_configure_runtime_pm(ctx); 317 platform_set_drvdata(pdev, ctx); 318 return ret; 319 320do_sst_cleanup: 321 sst_context_cleanup(ctx); 322 platform_set_drvdata(pdev, NULL); 323 dev_err(ctx->dev, "failed with %d\n", ret); 324 return ret; 325} 326 327/** 328* intel_sst_remove - remove function 329* 330* @pdev: platform device structure 331* 332* This function is called by OS when a device is unloaded 333* This frees the interrupt etc 334*/ 335static int sst_acpi_remove(struct platform_device *pdev) 336{ 337 struct intel_sst_drv *ctx; 338 339 ctx = platform_get_drvdata(pdev); 340 sst_context_cleanup(ctx); 341 platform_set_drvdata(pdev, NULL); 342 return 0; 343} 344 345static struct sst_machines sst_acpi_bytcr[] = { 346 {"10EC5640", "T100", "bytt100_rt5640", NULL, "intel/fw_sst_0f28.bin", 347 &byt_rvp_platform_data }, 348 {}, 349}; 350 351/* Cherryview-based platforms: CherryTrail and Braswell */ 352static struct sst_machines sst_acpi_chv[] = { 353 {"10EC5670", "cht-bsw", "cht-bsw-rt5672", NULL, "intel/fw_sst_22a8.bin", 354 &chv_platform_data }, 355 {"10EC5645", "cht-bsw", "cht-bsw-rt5645", NULL, "intel/fw_sst_22a8.bin", 356 &chv_platform_data }, 357 {}, 358}; 359 360static const struct acpi_device_id sst_acpi_ids[] = { 361 { "80860F28", (unsigned long)&sst_acpi_bytcr}, 362 { "808622A8", (unsigned long) &sst_acpi_chv}, 363 { }, 364}; 365 366MODULE_DEVICE_TABLE(acpi, sst_acpi_ids); 367 368static struct platform_driver sst_acpi_driver = { 369 .driver = { 370 .name = "intel_sst_acpi", 371 .acpi_match_table = ACPI_PTR(sst_acpi_ids), 372 .pm = &intel_sst_pm, 373 }, 374 .probe = sst_acpi_probe, 375 .remove = sst_acpi_remove, 376}; 377 378module_platform_driver(sst_acpi_driver); 379 380MODULE_DESCRIPTION("Intel (R) SST(R) Audio Engine ACPI Driver"); 381MODULE_AUTHOR("Ramesh Babu K V"); 382MODULE_AUTHOR("Omair Mohammed Abdullah"); 383MODULE_LICENSE("GPL v2"); 384MODULE_ALIAS("sst"); 385