[J-u-boot.git] / drivers / ata / dwc_ahci.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * DWC SATA platform driver
 *
 * (C) Copyright 2016
 *     Texas Instruments Incorporated, <www.ti.com>
 *
 * Author: Mugunthan V N <[email protected]>
 */

#include <common.h>
#include <dm.h>
#include <ahci.h>
#include <scsi.h>
#include <sata.h>
#include <asm/arch/sata.h>
#include <asm/io.h>
#include <generic-phy.h>

struct dwc_ahci_priv {
	void *base;
	void *wrapper_base;
};

static int dwc_ahci_bind(struct udevice *dev)
{
	struct udevice *scsi_dev;

	return ahci_bind_scsi(dev, &scsi_dev);
}

static int dwc_ahci_ofdata_to_platdata(struct udevice *dev)
{
	struct dwc_ahci_priv *priv = dev_get_priv(dev);
	fdt_addr_t addr;

	priv->base = map_physmem(devfdt_get_addr(dev), sizeof(void *),
				 MAP_NOCACHE);

	addr = devfdt_get_addr_index(dev, 1);
	if (addr != FDT_ADDR_T_NONE) {
		priv->wrapper_base = map_physmem(addr, sizeof(void *),
						 MAP_NOCACHE);
	} else {
		priv->wrapper_base = NULL;
	}

	return 0;
}

static int dwc_ahci_probe(struct udevice *dev)
{
	struct dwc_ahci_priv *priv = dev_get_priv(dev);
	int ret;
	struct phy phy;

	ret = generic_phy_get_by_name(dev, "sata-phy", &phy);
	if (ret) {
		pr_err("can't get the phy from DT\n");
		return ret;
	}

	ret = generic_phy_init(&phy);
	if (ret) {
		pr_err("unable to initialize the sata phy\n");
		return ret;
	}

	ret = generic_phy_power_on(&phy);
	if (ret) {
		pr_err("unable to power on the sata phy\n");
		return ret;
	}

	if (priv->wrapper_base) {
		u32 val = TI_SATA_IDLE_NO | TI_SATA_STANDBY_NO;

		/* Enable SATA module, No Idle, No Standby */
		writel(val, priv->wrapper_base + TI_SATA_SYSCONFIG);
	}

	return ahci_probe_scsi(dev, (ulong)priv->base);
}

static const struct udevice_id dwc_ahci_ids[] = {
	{ .compatible = "snps,dwc-ahci" },
	{ }
};

U_BOOT_DRIVER(dwc_ahci) = {
	.name	= "dwc_ahci",
	.id	= UCLASS_AHCI,
	.of_match = dwc_ahci_ids,
	.bind	= dwc_ahci_bind,
	.ofdata_to_platdata = dwc_ahci_ofdata_to_platdata,
	.ops	= &scsi_ops,
	.probe	= dwc_ahci_probe,
	.priv_auto_alloc_size = sizeof(struct dwc_ahci_priv),
};
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
02a4b429 JJH	2	/*
	3	* DWC SATA platform driver
	4	*
	5	* (C) Copyright 2016
	6	* Texas Instruments Incorporated, <www.ti.com>
	7	*
	8	* Author: Mugunthan V N <[email protected]>
02a4b429 JJH	9	*/
	10
	11	#include <common.h>
	12	#include <dm.h>
	13	#include <ahci.h>
	14	#include <scsi.h>
	15	#include <sata.h>
	16	#include <asm/arch/sata.h>
	17	#include <asm/io.h>
	18	#include <generic-phy.h>
	19
02a4b429 JJH	20	struct dwc_ahci_priv {
	21	void *base;
	22	void *wrapper_base;
	23	};
	24
64563f53 JJH	25	static int dwc_ahci_bind(struct udevice *dev)
	26	{
	27	struct udevice *scsi_dev;
	28
	29	return ahci_bind_scsi(dev, &scsi_dev);
	30	}
	31
02a4b429 JJH	32	static int dwc_ahci_ofdata_to_platdata(struct udevice *dev)
	33	{
	34	struct dwc_ahci_priv *priv = dev_get_priv(dev);
02a4b429 JJH	35	fdt_addr_t addr;
02a4b429 JJH	36
7208396b	37	priv->base = map_physmem(devfdt_get_addr(dev), sizeof(void *),
02a4b429 JJH	38	MAP_NOCACHE);
02a4b429 JJH	39
a821c4af	40	addr = devfdt_get_addr_index(dev, 1);
02a4b429 JJH	41	if (addr != FDT_ADDR_T_NONE) {
	42	priv->wrapper_base = map_physmem(addr, sizeof(void *),
	43	MAP_NOCACHE);
	44	} else {
	45	priv->wrapper_base = NULL;
	46	}
	47
	48	return 0;
	49	}
	50
	51	static int dwc_ahci_probe(struct udevice *dev)
	52	{
	53	struct dwc_ahci_priv *priv = dev_get_priv(dev);
	54	int ret;
	55	struct phy phy;
	56
	57	ret = generic_phy_get_by_name(dev, "sata-phy", &phy);
	58	if (ret) {
9b643e31	59	pr_err("can't get the phy from DT\n");
02a4b429 JJH	60	return ret;
	61	}
	62
	63	ret = generic_phy_init(&phy);
	64	if (ret) {
9b643e31	65	pr_err("unable to initialize the sata phy\n");
02a4b429 JJH	66	return ret;
	67	}
	68
	69	ret = generic_phy_power_on(&phy);
	70	if (ret) {
9b643e31	71	pr_err("unable to power on the sata phy\n");
02a4b429 JJH	72	return ret;
	73	}
	74
	75	if (priv->wrapper_base) {
	76	u32 val = TI_SATA_IDLE_NO \| TI_SATA_STANDBY_NO;
	77
	78	/* Enable SATA module, No Idle, No Standby */
	79	writel(val, priv->wrapper_base + TI_SATA_SYSCONFIG);
	80	}
	81
64563f53	82	return ahci_probe_scsi(dev, (ulong)priv->base);
02a4b429 JJH	83	}
	84
	85	static const struct udevice_id dwc_ahci_ids[] = {
	86	{ .compatible = "snps,dwc-ahci" },
	87	{ }
	88	};
	89
	90	U_BOOT_DRIVER(dwc_ahci) = {
	91	.name = "dwc_ahci",
64563f53	92	.id = UCLASS_AHCI,
02a4b429	93	.of_match = dwc_ahci_ids,
64563f53	94	.bind = dwc_ahci_bind,
02a4b429	95	.ofdata_to_platdata = dwc_ahci_ofdata_to_platdata,
f6ab5a92	96	.ops = &scsi_ops,
02a4b429 JJH	97	.probe = dwc_ahci_probe,
02a4b429 JJH	98	.priv_auto_alloc_size = sizeof(struct dwc_ahci_priv),
02a4b429	99	};