1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2005-2007 by Texas Instruments
4 * Some code has been taken from tusb6010.c
5 * Copyrights for that are attributable to:
6 * Copyright (C) 2006 Nokia Corporation
7 * Tony Lindgren <tony@atomide.com>
8 *
9 * This file is part of the Inventra Controller Driver for Linux.
10 */
11 #include <common.h>
12 #include <dm.h>
13 #include <serial.h>
14 #include <dm/device-internal.h>
15 #include <dm/lists.h>
16 #include <linux/usb/otg.h>
17 #include <asm/omap_common.h>
18 #include <asm/omap_musb.h>
19 #include <twl4030.h>
20 #include <twl6030.h>
21 #include "linux-compat.h"
22 #include "musb_core.h"
23 #include "omap2430.h"
24 #include "musb_uboot.h"
25
omap2430_low_level_exit(struct musb * musb)26 static inline void omap2430_low_level_exit(struct musb *musb)
27 {
28 u32 l;
29
30 /* in any role */
31 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
32 l |= ENABLEFORCE; /* enable MSTANDBY */
33 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
34 }
35
omap2430_low_level_init(struct musb * musb)36 static inline void omap2430_low_level_init(struct musb *musb)
37 {
38 u32 l;
39
40 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
41 l &= ~ENABLEFORCE; /* disable MSTANDBY */
42 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
43 }
44
45
omap2430_musb_init(struct musb * musb)46 static int omap2430_musb_init(struct musb *musb)
47 {
48 u32 l;
49 int status = 0;
50 unsigned long int start;
51
52 struct omap_musb_board_data *data =
53 (struct omap_musb_board_data *)musb->controller;
54
55 /* Reset the controller */
56 musb_writel(musb->mregs, OTG_SYSCONFIG, SOFTRST);
57
58 start = get_timer(0);
59
60 while (1) {
61 l = musb_readl(musb->mregs, OTG_SYSCONFIG);
62 if ((l & SOFTRST) == 0)
63 break;
64
65 if (get_timer(start) > (CONFIG_SYS_HZ / 1000)) {
66 dev_err(musb->controller, "MUSB reset is taking too long\n");
67 return -ENODEV;
68 }
69 }
70
71 l = musb_readl(musb->mregs, OTG_INTERFSEL);
72
73 if (data->interface_type == MUSB_INTERFACE_UTMI) {
74 /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
75 l &= ~ULPI_12PIN; /* Disable ULPI */
76 l |= UTMI_8BIT; /* Enable UTMI */
77 } else {
78 l |= ULPI_12PIN;
79 }
80
81 musb_writel(musb->mregs, OTG_INTERFSEL, l);
82
83 pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
84 "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
85 musb_readl(musb->mregs, OTG_REVISION),
86 musb_readl(musb->mregs, OTG_SYSCONFIG),
87 musb_readl(musb->mregs, OTG_SYSSTATUS),
88 musb_readl(musb->mregs, OTG_INTERFSEL),
89 musb_readl(musb->mregs, OTG_SIMENABLE));
90 return 0;
91
92 err1:
93 return status;
94 }
95
omap2430_musb_enable(struct musb * musb)96 static int omap2430_musb_enable(struct musb *musb)
97 {
98 #ifdef CONFIG_TWL4030_USB
99 if (twl4030_usb_ulpi_init()) {
100 serial_printf("ERROR: %s Could not initialize PHY\n",
101 __PRETTY_FUNCTION__);
102 }
103 #endif
104
105 #ifdef CONFIG_TWL6030_POWER
106 twl6030_usb_device_settings();
107 #endif
108
109 #ifdef CONFIG_OMAP44XX
110 u32 *usbotghs_control = (u32 *)((*ctrl)->control_usbotghs_ctrl);
111 *usbotghs_control = USBOTGHS_CONTROL_AVALID |
112 USBOTGHS_CONTROL_VBUSVALID | USBOTGHS_CONTROL_IDDIG;
113 #endif
114
115 return 0;
116 }
117
omap2430_musb_disable(struct musb * musb)118 static void omap2430_musb_disable(struct musb *musb)
119 {
120
121 }
122
omap2430_musb_exit(struct musb * musb)123 static int omap2430_musb_exit(struct musb *musb)
124 {
125 del_timer_sync(&musb_idle_timer);
126
127 omap2430_low_level_exit(musb);
128
129 return 0;
130 }
131
132 const struct musb_platform_ops omap2430_ops = {
133 .init = omap2430_musb_init,
134 .exit = omap2430_musb_exit,
135 .enable = omap2430_musb_enable,
136 .disable = omap2430_musb_disable,
137 };
138
139 #if CONFIG_IS_ENABLED(DM_USB)
140
141 struct omap2430_musb_platdata {
142 void *base;
143 void *ctrl_mod_base;
144 struct musb_hdrc_platform_data plat;
145 struct musb_hdrc_config musb_config;
146 struct omap_musb_board_data otg_board_data;
147 };
148
omap2430_musb_ofdata_to_platdata(struct udevice * dev)149 static int omap2430_musb_ofdata_to_platdata(struct udevice *dev)
150 {
151 struct omap2430_musb_platdata *platdata = dev_get_platdata(dev);
152 const void *fdt = gd->fdt_blob;
153 int node = dev_of_offset(dev);
154
155 platdata->base = (void *)dev_read_addr_ptr(dev);
156
157 platdata->musb_config.multipoint = fdtdec_get_int(fdt, node,
158 "multipoint",
159 -1);
160 if (platdata->musb_config.multipoint < 0) {
161 pr_err("MUSB multipoint DT entry missing\n");
162 return -ENOENT;
163 }
164
165 platdata->musb_config.dyn_fifo = 1;
166 platdata->musb_config.num_eps = fdtdec_get_int(fdt, node,
167 "num-eps", -1);
168 if (platdata->musb_config.num_eps < 0) {
169 pr_err("MUSB num-eps DT entry missing\n");
170 return -ENOENT;
171 }
172
173 platdata->musb_config.ram_bits = fdtdec_get_int(fdt, node,
174 "ram-bits", -1);
175 if (platdata->musb_config.ram_bits < 0) {
176 pr_err("MUSB ram-bits DT entry missing\n");
177 return -ENOENT;
178 }
179
180 platdata->plat.power = fdtdec_get_int(fdt, node,
181 "power", -1);
182 if (platdata->plat.power < 0) {
183 pr_err("MUSB power DT entry missing\n");
184 return -ENOENT;
185 }
186
187 platdata->otg_board_data.interface_type = fdtdec_get_int(fdt, node,
188 "interface-type", -1);
189 if (platdata->otg_board_data.interface_type < 0) {
190 pr_err("MUSB interface-type DT entry missing\n");
191 return -ENOENT;
192 }
193
194 #if 0 /* In a perfect world, mode would be set to OTG, mode 3 from DT */
195 platdata->plat.mode = fdtdec_get_int(fdt, node,
196 "mode", -1);
197 if (platdata->plat.mode < 0) {
198 pr_err("MUSB mode DT entry missing\n");
199 return -ENOENT;
200 }
201 #else /* MUSB_OTG, it doesn't work */
202 #ifdef CONFIG_USB_MUSB_HOST /* Host seems to be the only option that works */
203 platdata->plat.mode = MUSB_HOST;
204 #else /* For that matter, MUSB_PERIPHERAL doesn't either */
205 platdata->plat.mode = MUSB_PERIPHERAL;
206 #endif
207 #endif
208 platdata->otg_board_data.dev = dev;
209 platdata->plat.config = &platdata->musb_config;
210 platdata->plat.platform_ops = &omap2430_ops;
211 platdata->plat.board_data = &platdata->otg_board_data;
212 return 0;
213 }
214
omap2430_musb_probe(struct udevice * dev)215 static int omap2430_musb_probe(struct udevice *dev)
216 {
217 #ifdef CONFIG_USB_MUSB_HOST
218 struct musb_host_data *host = dev_get_priv(dev);
219 #else
220 struct musb *musbp;
221 #endif
222 struct omap2430_musb_platdata *platdata = dev_get_platdata(dev);
223 struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
224 struct omap_musb_board_data *otg_board_data;
225 int ret = 0;
226 void *base = dev_read_addr_ptr(dev);
227
228 priv->desc_before_addr = true;
229
230 otg_board_data = &platdata->otg_board_data;
231
232 #ifdef CONFIG_USB_MUSB_HOST
233 host->host = musb_init_controller(&platdata->plat,
234 (struct device *)otg_board_data,
235 platdata->base);
236 if (!host->host) {
237 return -EIO;
238 }
239
240 ret = musb_lowlevel_init(host);
241 #else
242 musbp = musb_register(&platdata->plat,
243 (struct device *)otg_board_data,
244 platdata->base);
245 if (IS_ERR_OR_NULL(musbp))
246 return -EINVAL;
247 #endif
248 return ret;
249 }
250
omap2430_musb_remove(struct udevice * dev)251 static int omap2430_musb_remove(struct udevice *dev)
252 {
253 struct musb_host_data *host = dev_get_priv(dev);
254
255 musb_stop(host->host);
256
257 return 0;
258 }
259
260 static const struct udevice_id omap2430_musb_ids[] = {
261 { .compatible = "ti,omap3-musb" },
262 { .compatible = "ti,omap4-musb" },
263 { }
264 };
265
266 U_BOOT_DRIVER(omap2430_musb) = {
267 .name = "omap2430-musb",
268 #ifdef CONFIG_USB_MUSB_HOST
269 .id = UCLASS_USB,
270 #else
271 .id = UCLASS_USB_GADGET_GENERIC,
272 #endif
273 .of_match = omap2430_musb_ids,
274 .ofdata_to_platdata = omap2430_musb_ofdata_to_platdata,
275 .probe = omap2430_musb_probe,
276 .remove = omap2430_musb_remove,
277 #ifdef CONFIG_USB_MUSB_HOST
278 .ops = &musb_usb_ops,
279 #endif
280 .platdata_auto_alloc_size = sizeof(struct omap2430_musb_platdata),
281 .priv_auto_alloc_size = sizeof(struct musb_host_data),
282 };
283
284 #endif /* CONFIG_IS_ENABLED(DM_USB) */
285