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Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0
Ilya Yanoka3292f22012-11-06 13:48:29 +00002/*
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.
Ilya Yanoka3292f22012-11-06 13:48:29 +000010 */
Ilya Yanoka3292f22012-11-06 13:48:29 +000011#include <common.h>
Adam Ford0b957cd2018-07-31 05:58:01 -050012#include <dm.h>
Simon Glassbd7a59a2019-11-14 12:57:23 -070013#include <serial.h>
Adam Ford0b957cd2018-07-31 05:58:01 -050014#include <dm/device-internal.h>
15#include <dm/lists.h>
16#include <linux/usb/otg.h>
Paul Kocialkowskid5a43ba2016-02-27 19:19:05 +010017#include <asm/omap_common.h>
Ilya Yanoka3292f22012-11-06 13:48:29 +000018#include <asm/omap_musb.h>
19#include <twl4030.h>
Paul Kocialkowskid5a43ba2016-02-27 19:19:05 +010020#include <twl6030.h>
Ilya Yanoka3292f22012-11-06 13:48:29 +000021#include "linux-compat.h"
Ilya Yanoka3292f22012-11-06 13:48:29 +000022#include "musb_core.h"
23#include "omap2430.h"
Adam Ford0b957cd2018-07-31 05:58:01 -050024#include "musb_uboot.h"
Ilya Yanoka3292f22012-11-06 13:48:29 +000025
Ilya Yanoka3292f22012-11-06 13:48:29 +000026static 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
36static 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
Ilya Yanoka3292f22012-11-06 13:48:29 +000045
Ilya Yanoka3292f22012-11-06 13:48:29 +000046static int omap2430_musb_init(struct musb *musb)
47{
48 u32 l;
49 int status = 0;
Paul Kocialkowski68dbdef2015-01-19 18:33:43 +010050 unsigned long int start;
Adam Ford0b957cd2018-07-31 05:58:01 -050051
Ilya Yanoka3292f22012-11-06 13:48:29 +000052 struct omap_musb_board_data *data =
53 (struct omap_musb_board_data *)musb->controller;
Ilya Yanoka3292f22012-11-06 13:48:29 +000054
Paul Kocialkowski68dbdef2015-01-19 18:33:43 +010055 /* 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 }
Ilya Yanoka3292f22012-11-06 13:48:29 +000070
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));
Ilya Yanoka3292f22012-11-06 13:48:29 +000090 return 0;
91
92err1:
93 return status;
94}
95
Hans de Goede81c49982015-06-17 21:33:54 +020096static int omap2430_musb_enable(struct musb *musb)
Ilya Yanoka3292f22012-11-06 13:48:29 +000097{
Ilya Yanoka3292f22012-11-06 13:48:29 +000098#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
Paul Kocialkowskid5a43ba2016-02-27 19:19:05 +0100104
105#ifdef CONFIG_TWL6030_POWER
106 twl6030_usb_device_settings();
107#endif
108
Tom Rini8d4bfb82017-05-12 22:33:19 -0400109#ifdef CONFIG_OMAP44XX
Paul Kocialkowskid5a43ba2016-02-27 19:19:05 +0100110 u32 *usbotghs_control = (u32 *)((*ctrl)->control_usbotghs_ctrl);
111 *usbotghs_control = USBOTGHS_CONTROL_AVALID |
112 USBOTGHS_CONTROL_VBUSVALID | USBOTGHS_CONTROL_IDDIG;
113#endif
114
Hans de Goede81c49982015-06-17 21:33:54 +0200115 return 0;
Ilya Yanoka3292f22012-11-06 13:48:29 +0000116}
117
118static void omap2430_musb_disable(struct musb *musb)
119{
Ilya Yanoka3292f22012-11-06 13:48:29 +0000120
Ilya Yanoka3292f22012-11-06 13:48:29 +0000121}
122
123static 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
Ilya Yanoka3292f22012-11-06 13:48:29 +0000132const struct musb_platform_ops omap2430_ops = {
Ilya Yanoka3292f22012-11-06 13:48:29 +0000133 .init = omap2430_musb_init,
134 .exit = omap2430_musb_exit,
Ilya Yanoka3292f22012-11-06 13:48:29 +0000135 .enable = omap2430_musb_enable,
136 .disable = omap2430_musb_disable,
137};
Adam Ford0b957cd2018-07-31 05:58:01 -0500138
Sven Schwermer8a3cb9f12018-11-21 08:43:56 +0100139#if CONFIG_IS_ENABLED(DM_USB)
Adam Ford0b957cd2018-07-31 05:58:01 -0500140
141struct 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
149static 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
215static int omap2430_musb_probe(struct udevice *dev)
216{
217#ifdef CONFIG_USB_MUSB_HOST
218 struct musb_host_data *host = dev_get_priv(dev);
Derald D. Woods3f12cf12019-05-27 21:22:00 -0500219#else
220 struct musb *musbp;
Adam Ford0b957cd2018-07-31 05:58:01 -0500221#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;
Derald D. Woods3f12cf12019-05-27 21:22:00 -0500225 int ret = 0;
Adam Ford0b957cd2018-07-31 05:58:01 -0500226 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
Derald D. Woods3f12cf12019-05-27 21:22:00 -0500242 musbp = musb_register(&platdata->plat,
Adam Ford0b957cd2018-07-31 05:58:01 -0500243 (struct device *)otg_board_data,
244 platdata->base);
Derald D. Woods3f12cf12019-05-27 21:22:00 -0500245 if (IS_ERR_OR_NULL(musbp))
246 return -EINVAL;
Adam Ford0b957cd2018-07-31 05:58:01 -0500247#endif
248 return ret;
249}
250
251static 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
260static const struct udevice_id omap2430_musb_ids[] = {
261 { .compatible = "ti,omap3-musb" },
262 { .compatible = "ti,omap4-musb" },
263 { }
264};
265
266U_BOOT_DRIVER(omap2430_musb) = {
267 .name = "omap2430-musb",
268#ifdef CONFIG_USB_MUSB_HOST
269 .id = UCLASS_USB,
270#else
Jean-Jacques Hiblot9dc0d5c2018-11-29 10:52:46 +0100271 .id = UCLASS_USB_GADGET_GENERIC,
Adam Ford0b957cd2018-07-31 05:58:01 -0500272#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
Sven Schwermer8a3cb9f12018-11-21 08:43:56 +0100284#endif /* CONFIG_IS_ENABLED(DM_USB) */