Eric Lee / smarc-uboot

Blame view

drivers/ata/dwc_ahci.c 2.25 KB
edit raw normal view history
d41ce506b   Eric Lee   Initial Release, ... 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
 
  /*
   * DWC SATA platform driver
   *
   * (C) Copyright 2016
   *     Texas Instruments Incorporated, <www.ti.com>
   *
   * Author: Mugunthan V N <mugunthanvnm@ti.com>
   *
   * SPDX-License-Identifier:     GPL-2.0+
   */
  
  #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>
  
  DECLARE_GLOBAL_DATA_PTR;
  
  struct dwc_ahci_priv {
  	void *base;
  	void *wrapper_base;
  };
  
  static int dwc_ahci_ofdata_to_platdata(struct udevice *dev)
  {
  	struct dwc_ahci_priv *priv = dev_get_priv(dev);
  	struct scsi_platdata *plat = dev_get_uclass_platdata(dev);
  	fdt_addr_t addr;
  
  	plat->max_id = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
  				       "max-id", CONFIG_SYS_SCSI_MAX_SCSI_ID);
  	plat->max_lun = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
  					"max-lun", CONFIG_SYS_SCSI_MAX_LUN);
  
  	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
  ");
  		return ret;
  	}
  
  	ret = generic_phy_init(&phy);
  	if (ret) {
  		pr_err("unable to initialize the sata phy
  ");
  		return ret;
  	}
  
  	ret = generic_phy_power_on(&phy);
  	if (ret) {
  		pr_err("unable to power on the sata phy
  ");
  		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);
  	}
  
  	ret = ahci_init_dm(dev, priv->base);
  	if (ret)
  		return ret;
  
  	return ahci_start_ports_dm(dev);
  }
  
  static const struct udevice_id dwc_ahci_ids[] = {
  	{ .compatible = "snps,dwc-ahci" },
  	{ }
  };
  
  U_BOOT_DRIVER(dwc_ahci) = {
  	.name	= "dwc_ahci",
  	.id	= UCLASS_SCSI,
  	.of_match = dwc_ahci_ids,
  	.ofdata_to_platdata = dwc_ahci_ofdata_to_platdata,
  	.ops	= &scsi_ops,
  	.probe	= dwc_ahci_probe,
  	.priv_auto_alloc_size = sizeof(struct dwc_ahci_priv),
  	.flags = DM_FLAG_ALLOC_PRIV_DMA,
  };