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.
15 #include <dm/device-internal.h>
16 #include <dm/device_compat.h>
18 #include <linux/err.h>
19 #include <linux/usb/otg.h>
20 #include <asm/omap_common.h>
21 #include <asm/omap_musb.h>
24 #include "linux-compat.h"
25 #include "musb_core.h"
27 #include "musb_uboot.h"
29 static inline void omap2430_low_level_exit(struct musb *musb)
34 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
35 l |= ENABLEFORCE; /* enable MSTANDBY */
36 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
39 static inline void omap2430_low_level_init(struct musb *musb)
43 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
44 l &= ~ENABLEFORCE; /* disable MSTANDBY */
45 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
49 static int omap2430_musb_init(struct musb *musb)
53 unsigned long int start;
55 struct omap_musb_board_data *data =
56 (struct omap_musb_board_data *)musb->controller;
58 /* Reset the controller */
59 musb_writel(musb->mregs, OTG_SYSCONFIG, SOFTRST);
64 l = musb_readl(musb->mregs, OTG_SYSCONFIG);
65 if ((l & SOFTRST) == 0)
68 if (get_timer(start) > (CONFIG_SYS_HZ / 1000)) {
69 dev_err(musb->controller, "MUSB reset is taking too long\n");
74 l = musb_readl(musb->mregs, OTG_INTERFSEL);
76 if (data->interface_type == MUSB_INTERFACE_UTMI) {
77 /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
78 l &= ~ULPI_12PIN; /* Disable ULPI */
79 l |= UTMI_8BIT; /* Enable UTMI */
84 musb_writel(musb->mregs, OTG_INTERFSEL, l);
86 pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
87 "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
88 musb_readl(musb->mregs, OTG_REVISION),
89 musb_readl(musb->mregs, OTG_SYSCONFIG),
90 musb_readl(musb->mregs, OTG_SYSSTATUS),
91 musb_readl(musb->mregs, OTG_INTERFSEL),
92 musb_readl(musb->mregs, OTG_SIMENABLE));
99 static int omap2430_musb_enable(struct musb *musb)
101 #ifdef CONFIG_TWL4030_USB
102 if (twl4030_usb_ulpi_init()) {
103 serial_printf("ERROR: %s Could not initialize PHY\n",
104 __PRETTY_FUNCTION__);
108 #ifdef CONFIG_TWL6030_POWER
109 twl6030_usb_device_settings();
112 #ifdef CONFIG_OMAP44XX
113 u32 *usbotghs_control = (u32 *)((*ctrl)->control_usbotghs_ctrl);
114 *usbotghs_control = USBOTGHS_CONTROL_AVALID |
115 USBOTGHS_CONTROL_VBUSVALID | USBOTGHS_CONTROL_IDDIG;
121 static void omap2430_musb_disable(struct musb *musb)
126 static int omap2430_musb_exit(struct musb *musb)
128 del_timer_sync(&musb_idle_timer);
130 omap2430_low_level_exit(musb);
135 const struct musb_platform_ops omap2430_ops = {
136 .init = omap2430_musb_init,
137 .exit = omap2430_musb_exit,
138 .enable = omap2430_musb_enable,
139 .disable = omap2430_musb_disable,
142 #if CONFIG_IS_ENABLED(DM_USB)
144 struct omap2430_musb_platdata {
147 struct musb_hdrc_platform_data plat;
148 struct musb_hdrc_config musb_config;
149 struct omap_musb_board_data otg_board_data;
152 static int omap2430_musb_ofdata_to_platdata(struct udevice *dev)
154 struct omap2430_musb_platdata *platdata = dev_get_platdata(dev);
155 const void *fdt = gd->fdt_blob;
156 int node = dev_of_offset(dev);
158 platdata->base = (void *)dev_read_addr_ptr(dev);
160 platdata->musb_config.multipoint = fdtdec_get_int(fdt, node,
163 if (platdata->musb_config.multipoint < 0) {
164 pr_err("MUSB multipoint DT entry missing\n");
168 platdata->musb_config.dyn_fifo = 1;
169 platdata->musb_config.num_eps = fdtdec_get_int(fdt, node,
171 if (platdata->musb_config.num_eps < 0) {
172 pr_err("MUSB num-eps DT entry missing\n");
176 platdata->musb_config.ram_bits = fdtdec_get_int(fdt, node,
178 if (platdata->musb_config.ram_bits < 0) {
179 pr_err("MUSB ram-bits DT entry missing\n");
183 platdata->plat.power = fdtdec_get_int(fdt, node,
185 if (platdata->plat.power < 0) {
186 pr_err("MUSB power DT entry missing\n");
190 platdata->otg_board_data.interface_type = fdtdec_get_int(fdt, node,
191 "interface-type", -1);
192 if (platdata->otg_board_data.interface_type < 0) {
193 pr_err("MUSB interface-type DT entry missing\n");
197 #if 0 /* In a perfect world, mode would be set to OTG, mode 3 from DT */
198 platdata->plat.mode = fdtdec_get_int(fdt, node,
200 if (platdata->plat.mode < 0) {
201 pr_err("MUSB mode DT entry missing\n");
204 #else /* MUSB_OTG, it doesn't work */
205 #ifdef CONFIG_USB_MUSB_HOST /* Host seems to be the only option that works */
206 platdata->plat.mode = MUSB_HOST;
207 #else /* For that matter, MUSB_PERIPHERAL doesn't either */
208 platdata->plat.mode = MUSB_PERIPHERAL;
211 platdata->otg_board_data.dev = dev;
212 platdata->plat.config = &platdata->musb_config;
213 platdata->plat.platform_ops = &omap2430_ops;
214 platdata->plat.board_data = &platdata->otg_board_data;
218 static int omap2430_musb_probe(struct udevice *dev)
220 #ifdef CONFIG_USB_MUSB_HOST
221 struct musb_host_data *host = dev_get_priv(dev);
225 struct omap2430_musb_platdata *platdata = dev_get_platdata(dev);
226 struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
227 struct omap_musb_board_data *otg_board_data;
229 void *base = dev_read_addr_ptr(dev);
231 priv->desc_before_addr = true;
233 otg_board_data = &platdata->otg_board_data;
235 #ifdef CONFIG_USB_MUSB_HOST
236 host->host = musb_init_controller(&platdata->plat,
237 (struct device *)otg_board_data,
243 ret = musb_lowlevel_init(host);
245 musbp = musb_register(&platdata->plat,
246 (struct device *)otg_board_data,
248 if (IS_ERR_OR_NULL(musbp))
254 static int omap2430_musb_remove(struct udevice *dev)
256 struct musb_host_data *host = dev_get_priv(dev);
258 musb_stop(host->host);
263 static const struct udevice_id omap2430_musb_ids[] = {
264 { .compatible = "ti,omap3-musb" },
265 { .compatible = "ti,omap4-musb" },
269 U_BOOT_DRIVER(omap2430_musb) = {
270 .name = "omap2430-musb",
271 #ifdef CONFIG_USB_MUSB_HOST
274 .id = UCLASS_USB_GADGET_GENERIC,
276 .of_match = omap2430_musb_ids,
277 .ofdata_to_platdata = omap2430_musb_ofdata_to_platdata,
278 .probe = omap2430_musb_probe,
279 .remove = omap2430_musb_remove,
280 #ifdef CONFIG_USB_MUSB_HOST
281 .ops = &musb_usb_ops,
283 .platdata_auto = sizeof(struct omap2430_musb_platdata),
284 .priv_auto = sizeof(struct musb_host_data),
287 #endif /* CONFIG_IS_ENABLED(DM_USB) */