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