1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0+
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * DWC SATA platform driver
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * (C) Copyright 2016
6*4882a593Smuzhiyun * Texas Instruments Incorporated, <www.ti.com>
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * Author: Mugunthan V N <mugunthanvnm@ti.com>
9*4882a593Smuzhiyun */
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include <common.h>
12*4882a593Smuzhiyun #include <dm.h>
13*4882a593Smuzhiyun #include <ahci.h>
14*4882a593Smuzhiyun #include <scsi.h>
15*4882a593Smuzhiyun #include <sata.h>
16*4882a593Smuzhiyun #include <asm/io.h>
17*4882a593Smuzhiyun #include <generic-phy.h>
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun struct dwc_ahci_priv {
20*4882a593Smuzhiyun void *base;
21*4882a593Smuzhiyun void *wrapper_base;
22*4882a593Smuzhiyun };
23*4882a593Smuzhiyun
dwc_ahci_bind(struct udevice * dev)24*4882a593Smuzhiyun static int dwc_ahci_bind(struct udevice *dev)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun struct udevice *scsi_dev;
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun return ahci_bind_scsi(dev, &scsi_dev);
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun
dwc_ahci_ofdata_to_platdata(struct udevice * dev)31*4882a593Smuzhiyun static int dwc_ahci_ofdata_to_platdata(struct udevice *dev)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun struct dwc_ahci_priv *priv = dev_get_priv(dev);
34*4882a593Smuzhiyun fdt_addr_t addr;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun priv->base = map_physmem(dev_read_addr(dev), sizeof(void *),
37*4882a593Smuzhiyun MAP_NOCACHE);
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun addr = devfdt_get_addr_index(dev, 1);
40*4882a593Smuzhiyun if (addr != FDT_ADDR_T_NONE) {
41*4882a593Smuzhiyun priv->wrapper_base = map_physmem(addr, sizeof(void *),
42*4882a593Smuzhiyun MAP_NOCACHE);
43*4882a593Smuzhiyun } else {
44*4882a593Smuzhiyun priv->wrapper_base = NULL;
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun return 0;
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
dwc_ahci_probe(struct udevice * dev)50*4882a593Smuzhiyun static int dwc_ahci_probe(struct udevice *dev)
51*4882a593Smuzhiyun {
52*4882a593Smuzhiyun struct dwc_ahci_priv *priv = dev_get_priv(dev);
53*4882a593Smuzhiyun int ret;
54*4882a593Smuzhiyun struct phy phy;
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun ret = generic_phy_get_by_name(dev, "sata-phy", &phy);
57*4882a593Smuzhiyun if (ret) {
58*4882a593Smuzhiyun pr_err("can't get the phy from DT\n");
59*4882a593Smuzhiyun return ret;
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun ret = generic_phy_init(&phy);
63*4882a593Smuzhiyun if (ret) {
64*4882a593Smuzhiyun pr_err("unable to initialize the sata phy\n");
65*4882a593Smuzhiyun return ret;
66*4882a593Smuzhiyun }
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun ret = generic_phy_power_on(&phy);
69*4882a593Smuzhiyun if (ret) {
70*4882a593Smuzhiyun pr_err("unable to power on the sata phy\n");
71*4882a593Smuzhiyun return ret;
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun return ahci_probe_scsi(dev, (ulong)priv->base);
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun static const struct udevice_id dwc_ahci_ids[] = {
78*4882a593Smuzhiyun { .compatible = "snps,dwc-ahci" },
79*4882a593Smuzhiyun { }
80*4882a593Smuzhiyun };
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun U_BOOT_DRIVER(dwc_ahci) = {
83*4882a593Smuzhiyun .name = "dwc_ahci",
84*4882a593Smuzhiyun .id = UCLASS_AHCI,
85*4882a593Smuzhiyun .of_match = dwc_ahci_ids,
86*4882a593Smuzhiyun .bind = dwc_ahci_bind,
87*4882a593Smuzhiyun .ofdata_to_platdata = dwc_ahci_ofdata_to_platdata,
88*4882a593Smuzhiyun .ops = &scsi_ops,
89*4882a593Smuzhiyun .probe = dwc_ahci_probe,
90*4882a593Smuzhiyun .priv_auto_alloc_size = sizeof(struct dwc_ahci_priv),
91*4882a593Smuzhiyun };
92