xref: /openbmc/linux/drivers/ata/ahci_brcm.c (revision a7eb54d4)
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_rescal;
90 	struct reset_control *rcdev_ahci;
91 };
92 
brcm_sata_readreg(void __iomem * addr)93 static inline u32 brcm_sata_readreg(void __iomem *addr)
94 {
95 	/*
96 	 * MIPS endianness is configured by boot strap, which also reverses all
97 	 * bus endianness (i.e., big-endian CPU + big endian bus ==> native
98 	 * endian I/O).
99 	 *
100 	 * Other architectures (e.g., ARM) either do not support big endian, or
101 	 * else leave I/O in little endian mode.
102 	 */
103 	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
104 		return __raw_readl(addr);
105 	else
106 		return readl_relaxed(addr);
107 }
108 
brcm_sata_writereg(u32 val,void __iomem * addr)109 static inline void brcm_sata_writereg(u32 val, void __iomem *addr)
110 {
111 	/* See brcm_sata_readreg() comments */
112 	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
113 		__raw_writel(val, addr);
114 	else
115 		writel_relaxed(val, addr);
116 }
117 
brcm_sata_alpm_init(struct ahci_host_priv * hpriv)118 static void brcm_sata_alpm_init(struct ahci_host_priv *hpriv)
119 {
120 	struct brcm_ahci_priv *priv = hpriv->plat_data;
121 	u32 port_ctrl, host_caps;
122 	int i;
123 
124 	/* Enable support for ALPM */
125 	host_caps = readl(hpriv->mmio + HOST_CAP);
126 	if (!(host_caps & HOST_CAP_ALPM))
127 		hpriv->flags |= AHCI_HFLAG_YES_ALPM;
128 
129 	/*
130 	 * Adjust timeout to allow PLL sufficient time to lock while waking
131 	 * up from slumber mode.
132 	 */
133 	for (i = 0, port_ctrl = SATA_FIRST_PORT_CTRL;
134 	     i < SATA_TOP_MAX_PHYS;
135 	     i++, port_ctrl += SATA_NEXT_PORT_CTRL_OFFSET) {
136 		if (priv->port_mask & BIT(i))
137 			writel(0xff1003fc,
138 			       hpriv->mmio + SATA_PORT_PCTRL6(port_ctrl));
139 	}
140 }
141 
brcm_sata_phy_enable(struct brcm_ahci_priv * priv,int port)142 static void brcm_sata_phy_enable(struct brcm_ahci_priv *priv, int port)
143 {
144 	void __iomem *phyctrl = priv->top_ctrl + SATA_TOP_CTRL_PHY_CTRL +
145 				(port * SATA_TOP_CTRL_PHY_OFFS);
146 	void __iomem *p;
147 	u32 reg;
148 
149 	if (priv->quirks & BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE)
150 		return;
151 
152 	/* clear PHY_DEFAULT_POWER_STATE */
153 	p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_1;
154 	reg = brcm_sata_readreg(p);
155 	reg &= ~SATA_TOP_CTRL_1_PHY_DEFAULT_POWER_STATE;
156 	brcm_sata_writereg(reg, p);
157 
158 	/* reset the PHY digital logic */
159 	p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_2;
160 	reg = brcm_sata_readreg(p);
161 	reg &= ~(SATA_TOP_CTRL_2_SW_RST_MDIOREG | SATA_TOP_CTRL_2_SW_RST_OOB |
162 		 SATA_TOP_CTRL_2_SW_RST_RX);
163 	reg |= SATA_TOP_CTRL_2_SW_RST_TX;
164 	brcm_sata_writereg(reg, p);
165 	reg = brcm_sata_readreg(p);
166 	reg |= SATA_TOP_CTRL_2_PHY_GLOBAL_RESET;
167 	brcm_sata_writereg(reg, p);
168 	reg = brcm_sata_readreg(p);
169 	reg &= ~SATA_TOP_CTRL_2_PHY_GLOBAL_RESET;
170 	brcm_sata_writereg(reg, p);
171 	(void)brcm_sata_readreg(p);
172 }
173 
brcm_sata_phy_disable(struct brcm_ahci_priv * priv,int port)174 static void brcm_sata_phy_disable(struct brcm_ahci_priv *priv, int port)
175 {
176 	void __iomem *phyctrl = priv->top_ctrl + SATA_TOP_CTRL_PHY_CTRL +
177 				(port * SATA_TOP_CTRL_PHY_OFFS);
178 	void __iomem *p;
179 	u32 reg;
180 
181 	if (priv->quirks & BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE)
182 		return;
183 
184 	/* power-off the PHY digital logic */
185 	p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_2;
186 	reg = brcm_sata_readreg(p);
187 	reg |= (SATA_TOP_CTRL_2_SW_RST_MDIOREG | SATA_TOP_CTRL_2_SW_RST_OOB |
188 		SATA_TOP_CTRL_2_SW_RST_RX | SATA_TOP_CTRL_2_SW_RST_TX |
189 		SATA_TOP_CTRL_2_PHY_GLOBAL_RESET);
190 	brcm_sata_writereg(reg, p);
191 
192 	/* set PHY_DEFAULT_POWER_STATE */
193 	p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_1;
194 	reg = brcm_sata_readreg(p);
195 	reg |= SATA_TOP_CTRL_1_PHY_DEFAULT_POWER_STATE;
196 	brcm_sata_writereg(reg, p);
197 }
198 
brcm_sata_phys_enable(struct brcm_ahci_priv * priv)199 static void brcm_sata_phys_enable(struct brcm_ahci_priv *priv)
200 {
201 	int i;
202 
203 	for (i = 0; i < SATA_TOP_MAX_PHYS; i++)
204 		if (priv->port_mask & BIT(i))
205 			brcm_sata_phy_enable(priv, i);
206 }
207 
brcm_sata_phys_disable(struct brcm_ahci_priv * priv)208 static void brcm_sata_phys_disable(struct brcm_ahci_priv *priv)
209 {
210 	int i;
211 
212 	for (i = 0; i < SATA_TOP_MAX_PHYS; i++)
213 		if (priv->port_mask & BIT(i))
214 			brcm_sata_phy_disable(priv, i);
215 }
216 
brcm_ahci_get_portmask(struct ahci_host_priv * hpriv,struct brcm_ahci_priv * priv)217 static u32 brcm_ahci_get_portmask(struct ahci_host_priv *hpriv,
218 				  struct brcm_ahci_priv *priv)
219 {
220 	u32 impl;
221 
222 	impl = readl(hpriv->mmio + HOST_PORTS_IMPL);
223 
224 	if (fls(impl) > SATA_TOP_MAX_PHYS)
225 		dev_warn(priv->dev, "warning: more ports than PHYs (%#x)\n",
226 			 impl);
227 	else if (!impl)
228 		dev_info(priv->dev, "no ports found\n");
229 
230 	return impl;
231 }
232 
brcm_sata_init(struct brcm_ahci_priv * priv)233 static void brcm_sata_init(struct brcm_ahci_priv *priv)
234 {
235 	void __iomem *ctrl = priv->top_ctrl + SATA_TOP_CTRL_BUS_CTRL;
236 	u32 data;
237 
238 	/* Configure endianness */
239 	data = brcm_sata_readreg(ctrl);
240 	data &= ~BUS_CTRL_ENDIAN_CONF_MASK;
241 	if (priv->version == BRCM_SATA_NSP)
242 		data |= BUS_CTRL_ENDIAN_NSP_CONF;
243 	else
244 		data |= BUS_CTRL_ENDIAN_CONF;
245 	brcm_sata_writereg(data, ctrl);
246 }
247 
brcm_ahci_read_id(struct ata_device * dev,struct ata_taskfile * tf,__le16 * id)248 static unsigned int brcm_ahci_read_id(struct ata_device *dev,
249 				      struct ata_taskfile *tf, __le16 *id)
250 {
251 	struct ata_port *ap = dev->link->ap;
252 	struct ata_host *host = ap->host;
253 	struct ahci_host_priv *hpriv = host->private_data;
254 	struct brcm_ahci_priv *priv = hpriv->plat_data;
255 	void __iomem *mmio = hpriv->mmio;
256 	unsigned int err_mask;
257 	unsigned long flags;
258 	int i, rc;
259 	u32 ctl;
260 
261 	/* Try to read the device ID and, if this fails, proceed with the
262 	 * recovery sequence below
263 	 */
264 	err_mask = ata_do_dev_read_id(dev, tf, id);
265 	if (likely(!err_mask))
266 		return err_mask;
267 
268 	/* Disable host interrupts */
269 	spin_lock_irqsave(&host->lock, flags);
270 	ctl = readl(mmio + HOST_CTL);
271 	ctl &= ~HOST_IRQ_EN;
272 	writel(ctl, mmio + HOST_CTL);
273 	readl(mmio + HOST_CTL); /* flush */
274 	spin_unlock_irqrestore(&host->lock, flags);
275 
276 	/* Perform the SATA PHY reset sequence */
277 	brcm_sata_phy_disable(priv, ap->port_no);
278 
279 	/* Reset the SATA clock */
280 	ahci_platform_disable_clks(hpriv);
281 	msleep(10);
282 
283 	ahci_platform_enable_clks(hpriv);
284 	msleep(10);
285 
286 	/* Bring the PHY back on */
287 	brcm_sata_phy_enable(priv, ap->port_no);
288 
289 	/* Re-initialize and calibrate the PHY */
290 	for (i = 0; i < hpriv->nports; i++) {
291 		rc = phy_init(hpriv->phys[i]);
292 		if (rc)
293 			goto disable_phys;
294 
295 		rc = phy_calibrate(hpriv->phys[i]);
296 		if (rc) {
297 			phy_exit(hpriv->phys[i]);
298 			goto disable_phys;
299 		}
300 	}
301 
302 	/* Re-enable host interrupts */
303 	spin_lock_irqsave(&host->lock, flags);
304 	ctl = readl(mmio + HOST_CTL);
305 	ctl |= HOST_IRQ_EN;
306 	writel(ctl, mmio + HOST_CTL);
307 	readl(mmio + HOST_CTL); /* flush */
308 	spin_unlock_irqrestore(&host->lock, flags);
309 
310 	return ata_do_dev_read_id(dev, tf, id);
311 
312 disable_phys:
313 	while (--i >= 0) {
314 		phy_power_off(hpriv->phys[i]);
315 		phy_exit(hpriv->phys[i]);
316 	}
317 
318 	return AC_ERR_OTHER;
319 }
320 
brcm_ahci_host_stop(struct ata_host * host)321 static void brcm_ahci_host_stop(struct ata_host *host)
322 {
323 	struct ahci_host_priv *hpriv = host->private_data;
324 
325 	ahci_platform_disable_resources(hpriv);
326 }
327 
328 static struct ata_port_operations ahci_brcm_platform_ops = {
329 	.inherits	= &ahci_ops,
330 	.host_stop	= brcm_ahci_host_stop,
331 	.read_id	= brcm_ahci_read_id,
332 };
333 
334 static const struct ata_port_info ahci_brcm_port_info = {
335 	.flags		= AHCI_FLAG_COMMON | ATA_FLAG_NO_DIPM,
336 	.link_flags	= ATA_LFLAG_NO_DEBOUNCE_DELAY,
337 	.pio_mask	= ATA_PIO4,
338 	.udma_mask	= ATA_UDMA6,
339 	.port_ops	= &ahci_brcm_platform_ops,
340 };
341 
brcm_ahci_suspend(struct device * dev)342 static int brcm_ahci_suspend(struct device *dev)
343 {
344 	struct ata_host *host = dev_get_drvdata(dev);
345 	struct ahci_host_priv *hpriv = host->private_data;
346 	struct brcm_ahci_priv *priv = hpriv->plat_data;
347 	int ret;
348 
349 	brcm_sata_phys_disable(priv);
350 
351 	if (IS_ENABLED(CONFIG_PM_SLEEP))
352 		ret = ahci_platform_suspend(dev);
353 	else
354 		ret = 0;
355 
356 	reset_control_assert(priv->rcdev_ahci);
357 	reset_control_rearm(priv->rcdev_rescal);
358 
359 	return ret;
360 }
361 
brcm_ahci_resume(struct device * dev)362 static int __maybe_unused brcm_ahci_resume(struct device *dev)
363 {
364 	struct ata_host *host = dev_get_drvdata(dev);
365 	struct ahci_host_priv *hpriv = host->private_data;
366 	struct brcm_ahci_priv *priv = hpriv->plat_data;
367 	int ret = 0;
368 
369 	ret = reset_control_deassert(priv->rcdev_ahci);
370 	if (ret)
371 		return ret;
372 	ret = reset_control_reset(priv->rcdev_rescal);
373 	if (ret)
374 		return ret;
375 
376 	/* Make sure clocks are turned on before re-configuration */
377 	ret = ahci_platform_enable_clks(hpriv);
378 	if (ret)
379 		return ret;
380 
381 	ret = ahci_platform_enable_regulators(hpriv);
382 	if (ret)
383 		goto out_disable_clks;
384 
385 	brcm_sata_init(priv);
386 	brcm_sata_phys_enable(priv);
387 	brcm_sata_alpm_init(hpriv);
388 
389 	/* Since we had to enable clocks earlier on, we cannot use
390 	 * ahci_platform_resume() as-is since a second call to
391 	 * ahci_platform_enable_resources() would bump up the resources
392 	 * (regulators, clocks, PHYs) count artificially so we copy the part
393 	 * after ahci_platform_enable_resources().
394 	 */
395 	ret = ahci_platform_enable_phys(hpriv);
396 	if (ret)
397 		goto out_disable_phys;
398 
399 	ret = ahci_platform_resume_host(dev);
400 	if (ret)
401 		goto out_disable_platform_phys;
402 
403 	/* We resumed so update PM runtime state */
404 	pm_runtime_disable(dev);
405 	pm_runtime_set_active(dev);
406 	pm_runtime_enable(dev);
407 
408 	return 0;
409 
410 out_disable_platform_phys:
411 	ahci_platform_disable_phys(hpriv);
412 out_disable_phys:
413 	brcm_sata_phys_disable(priv);
414 	ahci_platform_disable_regulators(hpriv);
415 out_disable_clks:
416 	ahci_platform_disable_clks(hpriv);
417 	return ret;
418 }
419 
420 static const struct scsi_host_template ahci_platform_sht = {
421 	AHCI_SHT(DRV_NAME),
422 };
423 
424 static const struct of_device_id ahci_of_match[] = {
425 	{.compatible = "brcm,bcm7425-ahci", .data = (void *)BRCM_SATA_BCM7425},
426 	{.compatible = "brcm,bcm7445-ahci", .data = (void *)BRCM_SATA_BCM7445},
427 	{.compatible = "brcm,bcm63138-ahci", .data = (void *)BRCM_SATA_BCM7445},
428 	{.compatible = "brcm,bcm-nsp-ahci", .data = (void *)BRCM_SATA_NSP},
429 	{.compatible = "brcm,bcm7216-ahci", .data = (void *)BRCM_SATA_BCM7216},
430 	{ /* sentinel */ }
431 };
432 MODULE_DEVICE_TABLE(of, ahci_of_match);
433 
brcm_ahci_probe(struct platform_device * pdev)434 static int brcm_ahci_probe(struct platform_device *pdev)
435 {
436 	const struct of_device_id *of_id;
437 	struct device *dev = &pdev->dev;
438 	struct brcm_ahci_priv *priv;
439 	struct ahci_host_priv *hpriv;
440 	struct resource *res;
441 	int ret;
442 
443 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
444 	if (!priv)
445 		return -ENOMEM;
446 
447 	of_id = of_match_node(ahci_of_match, pdev->dev.of_node);
448 	if (!of_id)
449 		return -ENODEV;
450 
451 	priv->version = (unsigned long)of_id->data;
452 	priv->dev = dev;
453 
454 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "top-ctrl");
455 	priv->top_ctrl = devm_ioremap_resource(dev, res);
456 	if (IS_ERR(priv->top_ctrl))
457 		return PTR_ERR(priv->top_ctrl);
458 
459 	if (priv->version == BRCM_SATA_BCM7216) {
460 		priv->rcdev_rescal = devm_reset_control_get_optional_shared(
461 			&pdev->dev, "rescal");
462 		if (IS_ERR(priv->rcdev_rescal))
463 			return PTR_ERR(priv->rcdev_rescal);
464 	}
465 	priv->rcdev_ahci = devm_reset_control_get_optional(&pdev->dev, "ahci");
466 	if (IS_ERR(priv->rcdev_ahci))
467 		return PTR_ERR(priv->rcdev_ahci);
468 
469 	hpriv = ahci_platform_get_resources(pdev, 0);
470 	if (IS_ERR(hpriv))
471 		return PTR_ERR(hpriv);
472 
473 	hpriv->plat_data = priv;
474 	hpriv->flags = AHCI_HFLAG_WAKE_BEFORE_STOP | AHCI_HFLAG_NO_WRITE_TO_RO;
475 
476 	switch (priv->version) {
477 	case BRCM_SATA_BCM7425:
478 		hpriv->flags |= AHCI_HFLAG_DELAY_ENGINE;
479 		fallthrough;
480 	case BRCM_SATA_NSP:
481 		hpriv->flags |= AHCI_HFLAG_NO_NCQ;
482 		priv->quirks |= BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE;
483 		break;
484 	default:
485 		break;
486 	}
487 
488 	ret = reset_control_reset(priv->rcdev_rescal);
489 	if (ret)
490 		return ret;
491 	ret = reset_control_deassert(priv->rcdev_ahci);
492 	if (ret)
493 		return ret;
494 
495 	ret = ahci_platform_enable_clks(hpriv);
496 	if (ret)
497 		goto out_reset;
498 
499 	ret = ahci_platform_enable_regulators(hpriv);
500 	if (ret)
501 		goto out_disable_clks;
502 
503 	/* Must be first so as to configure endianness including that
504 	 * of the standard AHCI register space.
505 	 */
506 	brcm_sata_init(priv);
507 
508 	/* Initializes priv->port_mask which is used below */
509 	priv->port_mask = brcm_ahci_get_portmask(hpriv, priv);
510 	if (!priv->port_mask) {
511 		ret = -ENODEV;
512 		goto out_disable_regulators;
513 	}
514 
515 	/* Must be done before ahci_platform_enable_phys() */
516 	brcm_sata_phys_enable(priv);
517 
518 	brcm_sata_alpm_init(hpriv);
519 
520 	ret = ahci_platform_enable_phys(hpriv);
521 	if (ret)
522 		goto out_disable_phys;
523 
524 	ret = ahci_platform_init_host(pdev, hpriv, &ahci_brcm_port_info,
525 				      &ahci_platform_sht);
526 	if (ret)
527 		goto out_disable_platform_phys;
528 
529 	dev_info(dev, "Broadcom AHCI SATA3 registered\n");
530 
531 	return 0;
532 
533 out_disable_platform_phys:
534 	ahci_platform_disable_phys(hpriv);
535 out_disable_phys:
536 	brcm_sata_phys_disable(priv);
537 out_disable_regulators:
538 	ahci_platform_disable_regulators(hpriv);
539 out_disable_clks:
540 	ahci_platform_disable_clks(hpriv);
541 out_reset:
542 	reset_control_assert(priv->rcdev_ahci);
543 	reset_control_rearm(priv->rcdev_rescal);
544 	return ret;
545 }
546 
brcm_ahci_remove(struct platform_device * pdev)547 static void brcm_ahci_remove(struct platform_device *pdev)
548 {
549 	struct ata_host *host = dev_get_drvdata(&pdev->dev);
550 	struct ahci_host_priv *hpriv = host->private_data;
551 	struct brcm_ahci_priv *priv = hpriv->plat_data;
552 
553 	brcm_sata_phys_disable(priv);
554 
555 	ata_platform_remove_one(pdev);
556 }
557 
brcm_ahci_shutdown(struct platform_device * pdev)558 static void brcm_ahci_shutdown(struct platform_device *pdev)
559 {
560 	int ret;
561 
562 	/* All resources releasing happens via devres, but our device, unlike a
563 	 * proper remove is not disappearing, therefore using
564 	 * brcm_ahci_suspend() here which does explicit power management is
565 	 * appropriate.
566 	 */
567 	ret = brcm_ahci_suspend(&pdev->dev);
568 	if (ret)
569 		dev_err(&pdev->dev, "failed to shutdown\n");
570 }
571 
572 static SIMPLE_DEV_PM_OPS(ahci_brcm_pm_ops, brcm_ahci_suspend, brcm_ahci_resume);
573 
574 static struct platform_driver brcm_ahci_driver = {
575 	.probe = brcm_ahci_probe,
576 	.remove_new = brcm_ahci_remove,
577 	.shutdown = brcm_ahci_shutdown,
578 	.driver = {
579 		.name = DRV_NAME,
580 		.of_match_table = ahci_of_match,
581 		.pm = &ahci_brcm_pm_ops,
582 	},
583 };
584 module_platform_driver(brcm_ahci_driver);
585 
586 MODULE_DESCRIPTION("Broadcom SATA3 AHCI Controller Driver");
587 MODULE_AUTHOR("Brian Norris");
588 MODULE_LICENSE("GPL");
589 MODULE_ALIAS("platform:sata-brcmstb");
590