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ata: Drop CONFIG_SATA_DWC
[u-boot] / drivers / ata / dwc_ahci.c
1 /*
2  * DWC SATA platform driver
3  *
4  * (C) Copyright 2016
5  *     Texas Instruments Incorporated, <www.ti.com>
6  *
7  * Author: Mugunthan V N <mugunthanvnm@ti.com>
8  *
9  * SPDX-License-Identifier:     GPL-2.0+
10  */
11
12 #include <common.h>
13 #include <dm.h>
14 #include <ahci.h>
15 #include <scsi.h>
16 #include <sata.h>
17 #include <asm/arch/sata.h>
18 #include <asm/io.h>
19 #include <generic-phy.h>
20
21 DECLARE_GLOBAL_DATA_PTR;
22
23 struct dwc_ahci_priv {
24         void *base;
25         void *wrapper_base;
26 };
27
28 static int dwc_ahci_ofdata_to_platdata(struct udevice *dev)
29 {
30         struct dwc_ahci_priv *priv = dev_get_priv(dev);
31         struct scsi_platdata *plat = dev_get_uclass_platdata(dev);
32         fdt_addr_t addr;
33
34         plat->max_id = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
35                                        "max-id", CONFIG_SYS_SCSI_MAX_SCSI_ID);
36         plat->max_lun = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
37                                         "max-lun", CONFIG_SYS_SCSI_MAX_LUN);
38
39         priv->base = map_physmem(devfdt_get_addr(dev), sizeof(void *),
40                                  MAP_NOCACHE);
41
42         addr = devfdt_get_addr_index(dev, 1);
43         if (addr != FDT_ADDR_T_NONE) {
44                 priv->wrapper_base = map_physmem(addr, sizeof(void *),
45                                                  MAP_NOCACHE);
46         } else {
47                 priv->wrapper_base = NULL;
48         }
49
50         return 0;
51 }
52
53 static int dwc_ahci_probe(struct udevice *dev)
54 {
55         struct dwc_ahci_priv *priv = dev_get_priv(dev);
56         int ret;
57         struct phy phy;
58
59         ret = generic_phy_get_by_name(dev, "sata-phy", &phy);
60         if (ret) {
61                 pr_err("can't get the phy from DT\n");
62                 return ret;
63         }
64
65         ret = generic_phy_init(&phy);
66         if (ret) {
67                 pr_err("unable to initialize the sata phy\n");
68                 return ret;
69         }
70
71         ret = generic_phy_power_on(&phy);
72         if (ret) {
73                 pr_err("unable to power on the sata phy\n");
74                 return ret;
75         }
76
77         if (priv->wrapper_base) {
78                 u32 val = TI_SATA_IDLE_NO | TI_SATA_STANDBY_NO;
79
80                 /* Enable SATA module, No Idle, No Standby */
81                 writel(val, priv->wrapper_base + TI_SATA_SYSCONFIG);
82         }
83
84         ret = ahci_init_dm(dev, priv->base);
85         if (ret)
86                 return ret;
87
88         return ahci_start_ports_dm(dev);
89 }
90
91 static const struct udevice_id dwc_ahci_ids[] = {
92         { .compatible = "snps,dwc-ahci" },
93         { }
94 };
95
96 U_BOOT_DRIVER(dwc_ahci) = {
97         .name   = "dwc_ahci",
98         .id     = UCLASS_SCSI,
99         .of_match = dwc_ahci_ids,
100         .ofdata_to_platdata = dwc_ahci_ofdata_to_platdata,
101         .ops    = &scsi_ops,
102         .probe  = dwc_ahci_probe,
103         .priv_auto_alloc_size = sizeof(struct dwc_ahci_priv),
104         .flags = DM_FLAG_ALLOC_PRIV_DMA,
105 };