1 // SPDX-License-Identifier: GPL-2.0
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>
9 * This file is part of the Inventra Controller Driver for Linux.
14 #include <dm/device-internal.h>
15 #include <dm/device_compat.h>
17 #include <linux/err.h>
18 #include <linux/usb/otg.h>
19 #include <asm/omap_common.h>
20 #include <asm/omap_musb.h>
23 #include "linux-compat.h"
24 #include "musb_core.h"
26 #include "musb_uboot.h"
28 static inline void omap2430_low_level_exit(struct musb *musb)
33 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
34 l |= ENABLEFORCE; /* enable MSTANDBY */
35 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
38 static inline void omap2430_low_level_init(struct musb *musb)
42 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
43 l &= ~ENABLEFORCE; /* disable MSTANDBY */
44 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
48 static int omap2430_musb_init(struct musb *musb)
52 unsigned long int start;
54 struct omap_musb_board_data *data =
55 (struct omap_musb_board_data *)musb->controller;
57 /* Reset the controller */
58 musb_writel(musb->mregs, OTG_SYSCONFIG, SOFTRST);
63 l = musb_readl(musb->mregs, OTG_SYSCONFIG);
64 if ((l & SOFTRST) == 0)
67 if (get_timer(start) > (CONFIG_SYS_HZ / 1000)) {
68 dev_err(musb->controller, "MUSB reset is taking too long\n");
73 l = musb_readl(musb->mregs, OTG_INTERFSEL);
75 if (data->interface_type == MUSB_INTERFACE_UTMI) {
76 /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
77 l &= ~ULPI_12PIN; /* Disable ULPI */
78 l |= UTMI_8BIT; /* Enable UTMI */
83 musb_writel(musb->mregs, OTG_INTERFSEL, l);
85 pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
86 "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
87 musb_readl(musb->mregs, OTG_REVISION),
88 musb_readl(musb->mregs, OTG_SYSCONFIG),
89 musb_readl(musb->mregs, OTG_SYSSTATUS),
90 musb_readl(musb->mregs, OTG_INTERFSEL),
91 musb_readl(musb->mregs, OTG_SIMENABLE));
98 static int omap2430_musb_enable(struct musb *musb)
100 #ifdef CONFIG_TWL4030_USB
101 if (twl4030_usb_ulpi_init()) {
102 serial_printf("ERROR: %s Could not initialize PHY\n",
103 __PRETTY_FUNCTION__);
107 #ifdef CONFIG_TWL6030_POWER
108 twl6030_usb_device_settings();
111 #ifdef CONFIG_OMAP44XX
112 u32 *usbotghs_control = (u32 *)((*ctrl)->control_usbotghs_ctrl);
113 *usbotghs_control = USBOTGHS_CONTROL_AVALID |
114 USBOTGHS_CONTROL_VBUSVALID | USBOTGHS_CONTROL_IDDIG;
120 static void omap2430_musb_disable(struct musb *musb)
125 static int omap2430_musb_exit(struct musb *musb)
127 del_timer_sync(&musb_idle_timer);
129 omap2430_low_level_exit(musb);
134 const struct musb_platform_ops omap2430_ops = {
135 .init = omap2430_musb_init,
136 .exit = omap2430_musb_exit,
137 .enable = omap2430_musb_enable,
138 .disable = omap2430_musb_disable,
141 #if CONFIG_IS_ENABLED(DM_USB)
143 struct omap2430_musb_platdata {
146 struct musb_hdrc_platform_data plat;
147 struct musb_hdrc_config musb_config;
148 struct omap_musb_board_data otg_board_data;
151 static int omap2430_musb_ofdata_to_platdata(struct udevice *dev)
153 struct omap2430_musb_platdata *platdata = dev_get_platdata(dev);
154 const void *fdt = gd->fdt_blob;
155 int node = dev_of_offset(dev);
157 platdata->base = (void *)dev_read_addr_ptr(dev);
159 platdata->musb_config.multipoint = fdtdec_get_int(fdt, node,
162 if (platdata->musb_config.multipoint < 0) {
163 pr_err("MUSB multipoint DT entry missing\n");
167 platdata->musb_config.dyn_fifo = 1;
168 platdata->musb_config.num_eps = fdtdec_get_int(fdt, node,
170 if (platdata->musb_config.num_eps < 0) {
171 pr_err("MUSB num-eps DT entry missing\n");
175 platdata->musb_config.ram_bits = fdtdec_get_int(fdt, node,
177 if (platdata->musb_config.ram_bits < 0) {
178 pr_err("MUSB ram-bits DT entry missing\n");
182 platdata->plat.power = fdtdec_get_int(fdt, node,
184 if (platdata->plat.power < 0) {
185 pr_err("MUSB power DT entry missing\n");
189 platdata->otg_board_data.interface_type = fdtdec_get_int(fdt, node,
190 "interface-type", -1);
191 if (platdata->otg_board_data.interface_type < 0) {
192 pr_err("MUSB interface-type DT entry missing\n");
196 #if 0 /* In a perfect world, mode would be set to OTG, mode 3 from DT */
197 platdata->plat.mode = fdtdec_get_int(fdt, node,
199 if (platdata->plat.mode < 0) {
200 pr_err("MUSB mode DT entry missing\n");
203 #else /* MUSB_OTG, it doesn't work */
204 #ifdef CONFIG_USB_MUSB_HOST /* Host seems to be the only option that works */
205 platdata->plat.mode = MUSB_HOST;
206 #else /* For that matter, MUSB_PERIPHERAL doesn't either */
207 platdata->plat.mode = MUSB_PERIPHERAL;
210 platdata->otg_board_data.dev = dev;
211 platdata->plat.config = &platdata->musb_config;
212 platdata->plat.platform_ops = &omap2430_ops;
213 platdata->plat.board_data = &platdata->otg_board_data;
217 static int omap2430_musb_probe(struct udevice *dev)
219 #ifdef CONFIG_USB_MUSB_HOST
220 struct musb_host_data *host = dev_get_priv(dev);
224 struct omap2430_musb_platdata *platdata = dev_get_platdata(dev);
225 struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
226 struct omap_musb_board_data *otg_board_data;
228 void *base = dev_read_addr_ptr(dev);
230 priv->desc_before_addr = true;
232 otg_board_data = &platdata->otg_board_data;
234 #ifdef CONFIG_USB_MUSB_HOST
235 host->host = musb_init_controller(&platdata->plat,
236 (struct device *)otg_board_data,
242 ret = musb_lowlevel_init(host);
244 musbp = musb_register(&platdata->plat,
245 (struct device *)otg_board_data,
247 if (IS_ERR_OR_NULL(musbp))
253 static int omap2430_musb_remove(struct udevice *dev)
255 struct musb_host_data *host = dev_get_priv(dev);
257 musb_stop(host->host);
262 static const struct udevice_id omap2430_musb_ids[] = {
263 { .compatible = "ti,omap3-musb" },
264 { .compatible = "ti,omap4-musb" },
268 U_BOOT_DRIVER(omap2430_musb) = {
269 .name = "omap2430-musb",
270 #ifdef CONFIG_USB_MUSB_HOST
273 .id = UCLASS_USB_GADGET_GENERIC,
275 .of_match = omap2430_musb_ids,
276 .ofdata_to_platdata = omap2430_musb_ofdata_to_platdata,
277 .probe = omap2430_musb_probe,
278 .remove = omap2430_musb_remove,
279 #ifdef CONFIG_USB_MUSB_HOST
280 .ops = &musb_usb_ops,
282 .platdata_auto_alloc_size = sizeof(struct omap2430_musb_platdata),
283 .priv_auto_alloc_size = sizeof(struct musb_host_data),
286 #endif /* CONFIG_IS_ENABLED(DM_USB) */