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