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>
16 #include <linux/err.h>
17 #include <linux/usb/otg.h>
18 #include <asm/omap_common.h>
19 #include <asm/omap_musb.h>
22 #include "linux-compat.h"
23 #include "musb_core.h"
25 #include "musb_uboot.h"
27 static inline void omap2430_low_level_exit(struct musb *musb)
32 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
33 l |= ENABLEFORCE; /* enable MSTANDBY */
34 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
37 static inline void omap2430_low_level_init(struct musb *musb)
41 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
42 l &= ~ENABLEFORCE; /* disable MSTANDBY */
43 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
47 static int omap2430_musb_init(struct musb *musb)
51 unsigned long int start;
53 struct omap_musb_board_data *data =
54 (struct omap_musb_board_data *)musb->controller;
56 /* Reset the controller */
57 musb_writel(musb->mregs, OTG_SYSCONFIG, SOFTRST);
62 l = musb_readl(musb->mregs, OTG_SYSCONFIG);
63 if ((l & SOFTRST) == 0)
66 if (get_timer(start) > (CONFIG_SYS_HZ / 1000)) {
67 dev_err(musb->controller, "MUSB reset is taking too long\n");
72 l = musb_readl(musb->mregs, OTG_INTERFSEL);
74 if (data->interface_type == MUSB_INTERFACE_UTMI) {
75 /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
76 l &= ~ULPI_12PIN; /* Disable ULPI */
77 l |= UTMI_8BIT; /* Enable UTMI */
82 musb_writel(musb->mregs, OTG_INTERFSEL, l);
84 pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
85 "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
86 musb_readl(musb->mregs, OTG_REVISION),
87 musb_readl(musb->mregs, OTG_SYSCONFIG),
88 musb_readl(musb->mregs, OTG_SYSSTATUS),
89 musb_readl(musb->mregs, OTG_INTERFSEL),
90 musb_readl(musb->mregs, OTG_SIMENABLE));
97 static int omap2430_musb_enable(struct musb *musb)
99 #ifdef CONFIG_TWL4030_USB
100 if (twl4030_usb_ulpi_init()) {
101 serial_printf("ERROR: %s Could not initialize PHY\n",
102 __PRETTY_FUNCTION__);
106 #ifdef CONFIG_TWL6030_POWER
107 twl6030_usb_device_settings();
110 #ifdef CONFIG_OMAP44XX
111 u32 *usbotghs_control = (u32 *)((*ctrl)->control_usbotghs_ctrl);
112 *usbotghs_control = USBOTGHS_CONTROL_AVALID |
113 USBOTGHS_CONTROL_VBUSVALID | USBOTGHS_CONTROL_IDDIG;
119 static void omap2430_musb_disable(struct musb *musb)
124 static int omap2430_musb_exit(struct musb *musb)
126 del_timer_sync(&musb_idle_timer);
128 omap2430_low_level_exit(musb);
133 const struct musb_platform_ops omap2430_ops = {
134 .init = omap2430_musb_init,
135 .exit = omap2430_musb_exit,
136 .enable = omap2430_musb_enable,
137 .disable = omap2430_musb_disable,
140 #if CONFIG_IS_ENABLED(DM_USB)
142 struct omap2430_musb_platdata {
145 struct musb_hdrc_platform_data plat;
146 struct musb_hdrc_config musb_config;
147 struct omap_musb_board_data otg_board_data;
150 static int omap2430_musb_ofdata_to_platdata(struct udevice *dev)
152 struct omap2430_musb_platdata *platdata = dev_get_platdata(dev);
153 const void *fdt = gd->fdt_blob;
154 int node = dev_of_offset(dev);
156 platdata->base = (void *)dev_read_addr_ptr(dev);
158 platdata->musb_config.multipoint = fdtdec_get_int(fdt, node,
161 if (platdata->musb_config.multipoint < 0) {
162 pr_err("MUSB multipoint DT entry missing\n");
166 platdata->musb_config.dyn_fifo = 1;
167 platdata->musb_config.num_eps = fdtdec_get_int(fdt, node,
169 if (platdata->musb_config.num_eps < 0) {
170 pr_err("MUSB num-eps DT entry missing\n");
174 platdata->musb_config.ram_bits = fdtdec_get_int(fdt, node,
176 if (platdata->musb_config.ram_bits < 0) {
177 pr_err("MUSB ram-bits DT entry missing\n");
181 platdata->plat.power = fdtdec_get_int(fdt, node,
183 if (platdata->plat.power < 0) {
184 pr_err("MUSB power DT entry missing\n");
188 platdata->otg_board_data.interface_type = fdtdec_get_int(fdt, node,
189 "interface-type", -1);
190 if (platdata->otg_board_data.interface_type < 0) {
191 pr_err("MUSB interface-type DT entry missing\n");
195 #if 0 /* In a perfect world, mode would be set to OTG, mode 3 from DT */
196 platdata->plat.mode = fdtdec_get_int(fdt, node,
198 if (platdata->plat.mode < 0) {
199 pr_err("MUSB mode DT entry missing\n");
202 #else /* MUSB_OTG, it doesn't work */
203 #ifdef CONFIG_USB_MUSB_HOST /* Host seems to be the only option that works */
204 platdata->plat.mode = MUSB_HOST;
205 #else /* For that matter, MUSB_PERIPHERAL doesn't either */
206 platdata->plat.mode = MUSB_PERIPHERAL;
209 platdata->otg_board_data.dev = dev;
210 platdata->plat.config = &platdata->musb_config;
211 platdata->plat.platform_ops = &omap2430_ops;
212 platdata->plat.board_data = &platdata->otg_board_data;
216 static int omap2430_musb_probe(struct udevice *dev)
218 #ifdef CONFIG_USB_MUSB_HOST
219 struct musb_host_data *host = dev_get_priv(dev);
223 struct omap2430_musb_platdata *platdata = dev_get_platdata(dev);
224 struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
225 struct omap_musb_board_data *otg_board_data;
227 void *base = dev_read_addr_ptr(dev);
229 priv->desc_before_addr = true;
231 otg_board_data = &platdata->otg_board_data;
233 #ifdef CONFIG_USB_MUSB_HOST
234 host->host = musb_init_controller(&platdata->plat,
235 (struct device *)otg_board_data,
241 ret = musb_lowlevel_init(host);
243 musbp = musb_register(&platdata->plat,
244 (struct device *)otg_board_data,
246 if (IS_ERR_OR_NULL(musbp))
252 static int omap2430_musb_remove(struct udevice *dev)
254 struct musb_host_data *host = dev_get_priv(dev);
256 musb_stop(host->host);
261 static const struct udevice_id omap2430_musb_ids[] = {
262 { .compatible = "ti,omap3-musb" },
263 { .compatible = "ti,omap4-musb" },
267 U_BOOT_DRIVER(omap2430_musb) = {
268 .name = "omap2430-musb",
269 #ifdef CONFIG_USB_MUSB_HOST
272 .id = UCLASS_USB_GADGET_GENERIC,
274 .of_match = omap2430_musb_ids,
275 .ofdata_to_platdata = omap2430_musb_ofdata_to_platdata,
276 .probe = omap2430_musb_probe,
277 .remove = omap2430_musb_remove,
278 #ifdef CONFIG_USB_MUSB_HOST
279 .ops = &musb_usb_ops,
281 .platdata_auto_alloc_size = sizeof(struct omap2430_musb_platdata),
282 .priv_auto_alloc_size = sizeof(struct musb_host_data),
285 #endif /* CONFIG_IS_ENABLED(DM_USB) */