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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / b0268244d321dc2e103338052f1c8ba9b892fece / . / drivers / usb / isp1760 / isp1760-if.c
blob: c96ab459f93e66cc2d52930cff52f17163863d39 [file] [log] [blame]
Rui Miguel Silva88861a22022-06-29 11:06:15 +0100[diff] [blame]1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright 2021 Linaro, Rui Miguel Silva <rui.silva@linaro.org>
4 *
5 * based on original code from:
6 * (c) 2007 Sebastian Siewior <bigeasy@linutronix.de>
7 */
8
9#include <common.h>
10#include <dm.h>
11#include <dm/device-internal.h>
12#include <dm/device_compat.h>
13#include <dm/devres.h>
14#include <dm/lists.h>
15#include <linux/bug.h>
16#include <linux/io.h>
17#include <linux/kernel.h>
18#include <linux/usb/otg.h>
19#include <log.h>
20#include <usb.h>
21
22#include "isp1760-core.h"
23#include "isp1760-regs.h"
24#include "isp1760-uboot.h"
25
26static int isp1760_of_to_plat(struct udevice *dev)
27{
28 struct isp1760_device *isp = dev_get_plat(dev);
29 unsigned int devflags = 0;
30 u32 bus_width = 0;
31 ofnode dp;
32
33 if (!dev_has_ofnode(dev)) {
34 /* select isp1763 as the default device */
35 devflags = ISP1760_FLAG_ISP1763 | ISP1760_FLAG_BUS_WIDTH_16;
36 pr_err("isp1760: no platform data\n");
37 goto isp_setup;
38 }
39
40 dp = dev_ofnode(dev);
41
42 if (ofnode_device_is_compatible(dp, "nxp,usb-isp1761"))
43 devflags |= ISP1760_FLAG_ISP1761;
44
45 if (ofnode_device_is_compatible(dp, "nxp,usb-isp1763"))
46 devflags |= ISP1760_FLAG_ISP1763;
47
48 /*
49 * Some systems wire up only 8 of 16 data lines or
50 * 16 of the 32 data lines
51 */
52 bus_width = ofnode_read_u32_default(dp, "bus-width", 16);
53 if (bus_width == 16)
54 devflags |= ISP1760_FLAG_BUS_WIDTH_16;
55 else if (bus_width == 8)
56 devflags |= ISP1760_FLAG_BUS_WIDTH_8;
57
58 if (usb_get_dr_mode(dev_ofnode(dev)) == USB_DR_MODE_PERIPHERAL)
59 devflags |= ISP1760_FLAG_PERIPHERAL_EN;
60
61 if (ofnode_read_bool(dp, "analog-oc"))
62 devflags |= ISP1760_FLAG_ANALOG_OC;
63
64 if (ofnode_read_bool(dp, "dack-polarity"))
65 devflags |= ISP1760_FLAG_DACK_POL_HIGH;
66
67 if (ofnode_read_bool(dp, "dreq-polarity"))
68 devflags |= ISP1760_FLAG_DREQ_POL_HIGH;
69
70isp_setup:
71 isp->devflags = devflags;
72 isp->dev = dev;
73
74 return 0;
75}
76
77static int isp1760_plat_probe(struct udevice *dev)
78{
79 struct isp1760_device *isp = dev_get_plat(dev);
80 struct resource mem_res;
81 struct resource irq_res;
82 int ret;
83
84 dev_read_resource(dev, 0, &mem_res);
85 dev_read_resource(dev, 1, &irq_res);
86
87 isp1760_init_kmem_once();
88
89 ret = isp1760_register(isp, &mem_res, irq_res.start, irq_res.flags);
90 if (ret < 0) {
91 isp1760_deinit_kmem_cache();
92 return ret;
93 }
94
95 return 0;
96}
97
98static int isp1760_plat_remove(struct udevice *dev)
99{
100 struct isp1760_device *isp = dev_get_plat(dev);
101
102 isp1760_deinit_kmem_cache();
103 isp1760_unregister(isp);
104
105 return 0;
106}
107
108static const struct udevice_id isp1760_ids[] = {
109 { .compatible = "nxp,usb-isp1760", },
110 { .compatible = "nxp,usb-isp1761", },
111 { .compatible = "nxp,usb-isp1763", },
112 { },
113};
114
115U_BOOT_DRIVER(isp1760) = {
116 .name = "isp1760",
117 .id = UCLASS_USB,
118 .of_match = isp1760_ids,
119 .of_to_plat = isp1760_of_to_plat,
120 .ops = &isp1760_usb_ops,
121 .probe = isp1760_plat_probe,
122 .remove = isp1760_plat_remove,
123 .plat_auto = sizeof(struct isp1760_device),
124 .priv_auto = sizeof(struct isp1760_host_data),
125};