drivers/ata/ahci_brcm.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Broadcom SATA3 AHCI Controller Driver
   4  *
   5  * Copyright © 2009-2015 Broadcom Corporation
   6  */
   7
   8 #include <linux/ahci_platform.h>
   9 #include <linux/compiler.h>
  10 #include <linux/device.h>
  11 #include <linux/init.h>
  12 #include <linux/interrupt.h>
  13 #include <linux/io.h>
  14 #include <linux/kernel.h>
  15 #include <linux/libata.h>
  16 #include <linux/module.h>
  17 #include <linux/of.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/reset.h>
  20 #include <linux/string.h>
  21
  22 #include "ahci.h"
  23
  24 #define DRV_NAME                                        "brcm-ahci"
  25
  26 #define SATA_TOP_CTRL_VERSION                           0x0
  27 #define SATA_TOP_CTRL_BUS_CTRL                          0x4
  28  #define MMIO_ENDIAN_SHIFT                              0 /* CPU->AHCI */
  29  #define DMADESC_ENDIAN_SHIFT                           2 /* AHCI->DDR */
  30  #define DMADATA_ENDIAN_SHIFT                           4 /* AHCI->DDR */
  31  #define PIODATA_ENDIAN_SHIFT                           6
  32   #define ENDIAN_SWAP_NONE                              0
  33   #define ENDIAN_SWAP_FULL                              2
  34 #define SATA_TOP_CTRL_TP_CTRL                           0x8
  35 #define SATA_TOP_CTRL_PHY_CTRL                          0xc
  36  #define SATA_TOP_CTRL_PHY_CTRL_1                       0x0
  37   #define SATA_TOP_CTRL_1_PHY_DEFAULT_POWER_STATE       BIT(14)
  38  #define SATA_TOP_CTRL_PHY_CTRL_2                       0x4
  39   #define SATA_TOP_CTRL_2_SW_RST_MDIOREG                BIT(0)
  40   #define SATA_TOP_CTRL_2_SW_RST_OOB                    BIT(1)
  41   #define SATA_TOP_CTRL_2_SW_RST_RX                     BIT(2)
  42   #define SATA_TOP_CTRL_2_SW_RST_TX                     BIT(3)
  43   #define SATA_TOP_CTRL_2_PHY_GLOBAL_RESET              BIT(14)
  44  #define SATA_TOP_CTRL_PHY_OFFS                         0x8
  45  #define SATA_TOP_MAX_PHYS                              2
  46
  47 #define SATA_FIRST_PORT_CTRL                            0x700
  48 #define SATA_NEXT_PORT_CTRL_OFFSET                      0x80
  49 #define SATA_PORT_PCTRL6(reg_base)                      (reg_base + 0x18)
  50
  51 /* On big-endian MIPS, buses are reversed to big endian, so switch them back */
  52 #if defined(CONFIG_MIPS) && defined(__BIG_ENDIAN)
  53 #define DATA_ENDIAN                      2 /* AHCI->DDR inbound accesses */
  54 #define MMIO_ENDIAN                      2 /* CPU->AHCI outbound accesses */
  55 #else
  56 #define DATA_ENDIAN                      0
  57 #define MMIO_ENDIAN                      0
  58 #endif
  59
  60 #define BUS_CTRL_ENDIAN_CONF                            \
  61         ((DATA_ENDIAN << DMADATA_ENDIAN_SHIFT) |        \
  62         (DATA_ENDIAN << DMADESC_ENDIAN_SHIFT) |         \
  63         (MMIO_ENDIAN << MMIO_ENDIAN_SHIFT))
  64
  65 #define BUS_CTRL_ENDIAN_NSP_CONF                        \
  66         (0x02 << DMADATA_ENDIAN_SHIFT | 0x02 << DMADESC_ENDIAN_SHIFT)
  67
  68 #define BUS_CTRL_ENDIAN_CONF_MASK                       \
  69         (0x3 << MMIO_ENDIAN_SHIFT | 0x3 << DMADESC_ENDIAN_SHIFT |       \
  70          0x3 << DMADATA_ENDIAN_SHIFT | 0x3 << PIODATA_ENDIAN_SHIFT)
  71
  72 enum brcm_ahci_version {
  73         BRCM_SATA_BCM7425 = 1,
  74         BRCM_SATA_BCM7445,
  75         BRCM_SATA_NSP,
  76         BRCM_SATA_BCM7216,
  77 };
  78
  79 enum brcm_ahci_quirks {
  80         BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE = BIT(0),
  81 };
  82
  83 struct brcm_ahci_priv {
  84         struct device *dev;
  85         void __iomem *top_ctrl;
  86         u32 port_mask;
  87         u32 quirks;
  88         enum brcm_ahci_version version;
  89         struct reset_control *rcdev;
  90 };
  91
  92 static inline u32 brcm_sata_readreg(void __iomem *addr)
  93 {
  94         /*
  95          * MIPS endianness is configured by boot strap, which also reverses all
  96          * bus endianness (i.e., big-endian CPU + big endian bus ==> native
  97          * endian I/O).
  98          *
  99          * Other architectures (e.g., ARM) either do not support big endian, or
 100          * else leave I/O in little endian mode.
 101          */
 102         if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
 103                 return __raw_readl(addr);
 104         else
 105                 return readl_relaxed(addr);
 106 }
 107
 108 static inline void brcm_sata_writereg(u32 val, void __iomem *addr)
 109 {
 110         /* See brcm_sata_readreg() comments */
 111         if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
 112                 __raw_writel(val, addr);
 113         else
 114                 writel_relaxed(val, addr);
 115 }
 116
 117 static void brcm_sata_alpm_init(struct ahci_host_priv *hpriv)
 118 {
 119         struct brcm_ahci_priv *priv = hpriv->plat_data;
 120         u32 port_ctrl, host_caps;
 121         int i;
 122
 123         /* Enable support for ALPM */
 124         host_caps = readl(hpriv->mmio + HOST_CAP);
 125         if (!(host_caps & HOST_CAP_ALPM))
 126                 hpriv->flags |= AHCI_HFLAG_YES_ALPM;
 127
 128         /*
 129          * Adjust timeout to allow PLL sufficient time to lock while waking
 130          * up from slumber mode.
 131          */
 132         for (i = 0, port_ctrl = SATA_FIRST_PORT_CTRL;
 133              i < SATA_TOP_MAX_PHYS;
 134              i++, port_ctrl += SATA_NEXT_PORT_CTRL_OFFSET) {
 135                 if (priv->port_mask & BIT(i))
 136                         writel(0xff1003fc,
 137                                hpriv->mmio + SATA_PORT_PCTRL6(port_ctrl));
 138         }
 139 }
 140
 141 static void brcm_sata_phy_enable(struct brcm_ahci_priv *priv, int port)
 142 {
 143         void __iomem *phyctrl = priv->top_ctrl + SATA_TOP_CTRL_PHY_CTRL +
 144                                 (port * SATA_TOP_CTRL_PHY_OFFS);
 145         void __iomem *p;
 146         u32 reg;
 147
 148         if (priv->quirks & BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE)
 149                 return;
 150
 151         /* clear PHY_DEFAULT_POWER_STATE */
 152         p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_1;
 153         reg = brcm_sata_readreg(p);
 154         reg &= ~SATA_TOP_CTRL_1_PHY_DEFAULT_POWER_STATE;
 155         brcm_sata_writereg(reg, p);
 156
 157         /* reset the PHY digital logic */
 158         p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_2;
 159         reg = brcm_sata_readreg(p);
 160         reg &= ~(SATA_TOP_CTRL_2_SW_RST_MDIOREG | SATA_TOP_CTRL_2_SW_RST_OOB |
 161                  SATA_TOP_CTRL_2_SW_RST_RX);
 162         reg |= SATA_TOP_CTRL_2_SW_RST_TX;
 163         brcm_sata_writereg(reg, p);
 164         reg = brcm_sata_readreg(p);
 165         reg |= SATA_TOP_CTRL_2_PHY_GLOBAL_RESET;
 166         brcm_sata_writereg(reg, p);
 167         reg = brcm_sata_readreg(p);
 168         reg &= ~SATA_TOP_CTRL_2_PHY_GLOBAL_RESET;
 169         brcm_sata_writereg(reg, p);
 170         (void)brcm_sata_readreg(p);
 171 }
 172
 173 static void brcm_sata_phy_disable(struct brcm_ahci_priv *priv, int port)
 174 {
 175         void __iomem *phyctrl = priv->top_ctrl + SATA_TOP_CTRL_PHY_CTRL +
 176                                 (port * SATA_TOP_CTRL_PHY_OFFS);
 177         void __iomem *p;
 178         u32 reg;
 179
 180         if (priv->quirks & BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE)
 181                 return;
 182
 183         /* power-off the PHY digital logic */
 184         p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_2;
 185         reg = brcm_sata_readreg(p);
 186         reg |= (SATA_TOP_CTRL_2_SW_RST_MDIOREG | SATA_TOP_CTRL_2_SW_RST_OOB |
 187                 SATA_TOP_CTRL_2_SW_RST_RX | SATA_TOP_CTRL_2_SW_RST_TX |
 188                 SATA_TOP_CTRL_2_PHY_GLOBAL_RESET);
 189         brcm_sata_writereg(reg, p);
 190
 191         /* set PHY_DEFAULT_POWER_STATE */
 192         p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_1;
 193         reg = brcm_sata_readreg(p);
 194         reg |= SATA_TOP_CTRL_1_PHY_DEFAULT_POWER_STATE;
 195         brcm_sata_writereg(reg, p);
 196 }
 197
 198 static void brcm_sata_phys_enable(struct brcm_ahci_priv *priv)
 199 {
 200         int i;
 201
 202         for (i = 0; i < SATA_TOP_MAX_PHYS; i++)
 203                 if (priv->port_mask & BIT(i))
 204                         brcm_sata_phy_enable(priv, i);
 205 }
 206
 207 static void brcm_sata_phys_disable(struct brcm_ahci_priv *priv)
 208 {
 209         int i;
 210
 211         for (i = 0; i < SATA_TOP_MAX_PHYS; i++)
 212                 if (priv->port_mask & BIT(i))
 213                         brcm_sata_phy_disable(priv, i);
 214 }
 215
 216 static u32 brcm_ahci_get_portmask(struct ahci_host_priv *hpriv,
 217                                   struct brcm_ahci_priv *priv)
 218 {
 219         u32 impl;
 220
 221         impl = readl(hpriv->mmio + HOST_PORTS_IMPL);
 222
 223         if (fls(impl) > SATA_TOP_MAX_PHYS)
 224                 dev_warn(priv->dev, "warning: more ports than PHYs (%#x)\n",
 225                          impl);
 226         else if (!impl)
 227                 dev_info(priv->dev, "no ports found\n");
 228
 229         return impl;
 230 }
 231
 232 static void brcm_sata_init(struct brcm_ahci_priv *priv)
 233 {
 234         void __iomem *ctrl = priv->top_ctrl + SATA_TOP_CTRL_BUS_CTRL;
 235         u32 data;
 236
 237         /* Configure endianness */
 238         data = brcm_sata_readreg(ctrl);
 239         data &= ~BUS_CTRL_ENDIAN_CONF_MASK;
 240         if (priv->version == BRCM_SATA_NSP)
 241                 data |= BUS_CTRL_ENDIAN_NSP_CONF;
 242         else
 243                 data |= BUS_CTRL_ENDIAN_CONF;
 244         brcm_sata_writereg(data, ctrl);
 245 }
 246
 247 static unsigned int brcm_ahci_read_id(struct ata_device *dev,
 248                                       struct ata_taskfile *tf, u16 *id)
 249 {
 250         struct ata_port *ap = dev->link->ap;
 251         struct ata_host *host = ap->host;
 252         struct ahci_host_priv *hpriv = host->private_data;
 253         struct brcm_ahci_priv *priv = hpriv->plat_data;
 254         void __iomem *mmio = hpriv->mmio;
 255         unsigned int err_mask;
 256         unsigned long flags;
 257         int i, rc;
 258         u32 ctl;
 259
 260         /* Try to read the device ID and, if this fails, proceed with the
 261          * recovery sequence below
 262          */
 263         err_mask = ata_do_dev_read_id(dev, tf, id);
 264         if (likely(!err_mask))
 265                 return err_mask;
 266
 267         /* Disable host interrupts */
 268         spin_lock_irqsave(&host->lock, flags);
 269         ctl = readl(mmio + HOST_CTL);
 270         ctl &= ~HOST_IRQ_EN;
 271         writel(ctl, mmio + HOST_CTL);
 272         readl(mmio + HOST_CTL); /* flush */
 273         spin_unlock_irqrestore(&host->lock, flags);
 274
 275         /* Perform the SATA PHY reset sequence */
 276         brcm_sata_phy_disable(priv, ap->port_no);
 277
 278         /* Reset the SATA clock */
 279         ahci_platform_disable_clks(hpriv);
 280         msleep(10);
 281
 282         ahci_platform_enable_clks(hpriv);
 283         msleep(10);
 284
 285         /* Bring the PHY back on */
 286         brcm_sata_phy_enable(priv, ap->port_no);
 287
 288         /* Re-initialize and calibrate the PHY */
 289         for (i = 0; i < hpriv->nports; i++) {
 290                 rc = phy_init(hpriv->phys[i]);
 291                 if (rc)
 292                         goto disable_phys;
 293
 294                 rc = phy_calibrate(hpriv->phys[i]);
 295                 if (rc) {
 296                         phy_exit(hpriv->phys[i]);
 297                         goto disable_phys;
 298                 }
 299         }
 300
 301         /* Re-enable host interrupts */
 302         spin_lock_irqsave(&host->lock, flags);
 303         ctl = readl(mmio + HOST_CTL);
 304         ctl |= HOST_IRQ_EN;
 305         writel(ctl, mmio + HOST_CTL);
 306         readl(mmio + HOST_CTL); /* flush */
 307         spin_unlock_irqrestore(&host->lock, flags);
 308
 309         return ata_do_dev_read_id(dev, tf, id);
 310
 311 disable_phys:
 312         while (--i >= 0) {
 313                 phy_power_off(hpriv->phys[i]);
 314                 phy_exit(hpriv->phys[i]);
 315         }
 316
 317         return AC_ERR_OTHER;
 318 }
 319
 320 static void brcm_ahci_host_stop(struct ata_host *host)
 321 {
 322         struct ahci_host_priv *hpriv = host->private_data;
 323
 324         ahci_platform_disable_resources(hpriv);
 325 }
 326
 327 static struct ata_port_operations ahci_brcm_platform_ops = {
 328         .inherits       = &ahci_ops,
 329         .host_stop      = brcm_ahci_host_stop,
 330         .read_id        = brcm_ahci_read_id,
 331 };
 332
 333 static const struct ata_port_info ahci_brcm_port_info = {
 334         .flags          = AHCI_FLAG_COMMON | ATA_FLAG_NO_DIPM,
 335         .link_flags     = ATA_LFLAG_NO_DB_DELAY,
 336         .pio_mask       = ATA_PIO4,
 337         .udma_mask      = ATA_UDMA6,
 338         .port_ops       = &ahci_brcm_platform_ops,
 339 };
 340
 341 static int brcm_ahci_suspend(struct device *dev)
 342 {
 343         struct ata_host *host = dev_get_drvdata(dev);
 344         struct ahci_host_priv *hpriv = host->private_data;
 345         struct brcm_ahci_priv *priv = hpriv->plat_data;
 346         int ret;
 347
 348         brcm_sata_phys_disable(priv);
 349
 350         if (IS_ENABLED(CONFIG_PM_SLEEP))
 351                 ret = ahci_platform_suspend(dev);
 352         else
 353                 ret = 0;
 354
 355         if (priv->version != BRCM_SATA_BCM7216)
 356                 reset_control_assert(priv->rcdev);
 357
 358         return ret;
 359 }
 360
 361 static int __maybe_unused brcm_ahci_resume(struct device *dev)
 362 {
 363         struct ata_host *host = dev_get_drvdata(dev);
 364         struct ahci_host_priv *hpriv = host->private_data;
 365         struct brcm_ahci_priv *priv = hpriv->plat_data;
 366         int ret = 0;
 367
 368         if (priv->version == BRCM_SATA_BCM7216)
 369                 ret = reset_control_reset(priv->rcdev);
 370         else
 371                 ret = reset_control_deassert(priv->rcdev);
 372         if (ret)
 373                 return ret;
 374
 375         /* Make sure clocks are turned on before re-configuration */
 376         ret = ahci_platform_enable_clks(hpriv);
 377         if (ret)
 378                 return ret;
 379
 380         brcm_sata_init(priv);
 381         brcm_sata_phys_enable(priv);
 382         brcm_sata_alpm_init(hpriv);
 383
 384         /* Since we had to enable clocks earlier on, we cannot use
 385          * ahci_platform_resume() as-is since a second call to
 386          * ahci_platform_enable_resources() would bump up the resources
 387          * (regulators, clocks, PHYs) count artificially so we copy the part
 388          * after ahci_platform_enable_resources().
 389          */
 390         ret = ahci_platform_enable_phys(hpriv);
 391         if (ret)
 392                 goto out_disable_phys;
 393
 394         ret = ahci_platform_resume_host(dev);
 395         if (ret)
 396                 goto out_disable_platform_phys;
 397
 398         /* We resumed so update PM runtime state */
 399         pm_runtime_disable(dev);
 400         pm_runtime_set_active(dev);
 401         pm_runtime_enable(dev);
 402
 403         return 0;
 404
 405 out_disable_platform_phys:
 406         ahci_platform_disable_phys(hpriv);
 407 out_disable_phys:
 408         brcm_sata_phys_disable(priv);
 409         ahci_platform_disable_clks(hpriv);
 410         return ret;
 411 }
 412
 413 static struct scsi_host_template ahci_platform_sht = {
 414         AHCI_SHT(DRV_NAME),
 415 };
 416
 417 static const struct of_device_id ahci_of_match[] = {
 418         {.compatible = "brcm,bcm7425-ahci", .data = (void *)BRCM_SATA_BCM7425},
 419         {.compatible = "brcm,bcm7445-ahci", .data = (void *)BRCM_SATA_BCM7445},
 420         {.compatible = "brcm,bcm63138-ahci", .data = (void *)BRCM_SATA_BCM7445},
 421         {.compatible = "brcm,bcm-nsp-ahci", .data = (void *)BRCM_SATA_NSP},
 422         {.compatible = "brcm,bcm7216-ahci", .data = (void *)BRCM_SATA_BCM7216},
 423         {},
 424 };
 425 MODULE_DEVICE_TABLE(of, ahci_of_match);
 426
 427 static int brcm_ahci_probe(struct platform_device *pdev)
 428 {
 429         const struct of_device_id *of_id;
 430         struct device *dev = &pdev->dev;
 431         const char *reset_name = NULL;
 432         struct brcm_ahci_priv *priv;
 433         struct ahci_host_priv *hpriv;
 434         struct resource *res;
 435         int ret;
 436
 437         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 438         if (!priv)
 439                 return -ENOMEM;
 440
 441         of_id = of_match_node(ahci_of_match, pdev->dev.of_node);
 442         if (!of_id)
 443                 return -ENODEV;
 444
 445         priv->version = (enum brcm_ahci_version)of_id->data;
 446         priv->dev = dev;
 447
 448         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "top-ctrl");
 449         priv->top_ctrl = devm_ioremap_resource(dev, res);
 450         if (IS_ERR(priv->top_ctrl))
 451                 return PTR_ERR(priv->top_ctrl);
 452
 453         /* Reset is optional depending on platform and named differently */
 454         if (priv->version == BRCM_SATA_BCM7216)
 455                 reset_name = "rescal";
 456         else
 457                 reset_name = "ahci";
 458
 459         priv->rcdev = devm_reset_control_get_optional(&pdev->dev, reset_name);
 460         if (IS_ERR(priv->rcdev))
 461                 return PTR_ERR(priv->rcdev);
 462
 463         hpriv = ahci_platform_get_resources(pdev, 0);
 464         if (IS_ERR(hpriv))
 465                 return PTR_ERR(hpriv);
 466
 467         hpriv->plat_data = priv;
 468         hpriv->flags = AHCI_HFLAG_WAKE_BEFORE_STOP | AHCI_HFLAG_NO_WRITE_TO_RO;
 469
 470         switch (priv->version) {
 471         case BRCM_SATA_BCM7425:
 472                 hpriv->flags |= AHCI_HFLAG_DELAY_ENGINE;
 473                 fallthrough;
 474         case BRCM_SATA_NSP:
 475                 hpriv->flags |= AHCI_HFLAG_NO_NCQ;
 476                 priv->quirks |= BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE;
 477                 break;
 478         default:
 479                 break;
 480         }
 481
 482         if (priv->version == BRCM_SATA_BCM7216)
 483                 ret = reset_control_reset(priv->rcdev);
 484         else
 485                 ret = reset_control_deassert(priv->rcdev);
 486         if (ret)
 487                 return ret;
 488
 489         ret = ahci_platform_enable_clks(hpriv);
 490         if (ret)
 491                 goto out_reset;
 492
 493         /* Must be first so as to configure endianness including that
 494          * of the standard AHCI register space.
 495          */
 496         brcm_sata_init(priv);
 497
 498         /* Initializes priv->port_mask which is used below */
 499         priv->port_mask = brcm_ahci_get_portmask(hpriv, priv);
 500         if (!priv->port_mask) {
 501                 ret = -ENODEV;
 502                 goto out_disable_clks;
 503         }
 504
 505         /* Must be done before ahci_platform_enable_phys() */
 506         brcm_sata_phys_enable(priv);
 507
 508         brcm_sata_alpm_init(hpriv);
 509
 510         ret = ahci_platform_enable_phys(hpriv);
 511         if (ret)
 512                 goto out_disable_phys;
 513
 514         ret = ahci_platform_init_host(pdev, hpriv, &ahci_brcm_port_info,
 515                                       &ahci_platform_sht);
 516         if (ret)
 517                 goto out_disable_platform_phys;
 518
 519         dev_info(dev, "Broadcom AHCI SATA3 registered\n");
 520
 521         return 0;
 522
 523 out_disable_platform_phys:
 524         ahci_platform_disable_phys(hpriv);
 525 out_disable_phys:
 526         brcm_sata_phys_disable(priv);
 527 out_disable_clks:
 528         ahci_platform_disable_clks(hpriv);
 529 out_reset:
 530         if (priv->version != BRCM_SATA_BCM7216)
 531                 reset_control_assert(priv->rcdev);
 532         return ret;
 533 }
 534
 535 static int brcm_ahci_remove(struct platform_device *pdev)
 536 {
 537         struct ata_host *host = dev_get_drvdata(&pdev->dev);
 538         struct ahci_host_priv *hpriv = host->private_data;
 539         struct brcm_ahci_priv *priv = hpriv->plat_data;
 540         int ret;
 541
 542         brcm_sata_phys_disable(priv);
 543
 544         ret = ata_platform_remove_one(pdev);
 545         if (ret)
 546                 return ret;
 547
 548         return 0;
 549 }
 550
 551 static void brcm_ahci_shutdown(struct platform_device *pdev)
 552 {
 553         int ret;
 554
 555         /* All resources releasing happens via devres, but our device, unlike a
 556          * proper remove is not disappearing, therefore using
 557          * brcm_ahci_suspend() here which does explicit power management is
 558          * appropriate.
 559          */
 560         ret = brcm_ahci_suspend(&pdev->dev);
 561         if (ret)
 562                 dev_err(&pdev->dev, "failed to shutdown\n");
 563 }
 564
 565 static SIMPLE_DEV_PM_OPS(ahci_brcm_pm_ops, brcm_ahci_suspend, brcm_ahci_resume);
 566
 567 static struct platform_driver brcm_ahci_driver = {
 568         .probe = brcm_ahci_probe,
 569         .remove = brcm_ahci_remove,
 570         .shutdown = brcm_ahci_shutdown,
 571         .driver = {
 572                 .name = DRV_NAME,
 573                 .of_match_table = ahci_of_match,
 574                 .pm = &ahci_brcm_pm_ops,
 575         },
 576 };
 577 module_platform_driver(brcm_ahci_driver);
 578
 579 MODULE_DESCRIPTION("Broadcom SATA3 AHCI Controller Driver");
 580 MODULE_AUTHOR("Brian Norris");
 581 MODULE_LICENSE("GPL");
 582 MODULE_ALIAS("platform:sata-brcmstb");