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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (C) 2005-2007 by Texas Instruments
- * Some code has been taken from tusb6010.c
- * Copyrights for that are attributable to:
- * Copyright (C) 2006 Nokia Corporation
- * Tony Lindgren <tony@atomide.com>
- *
- * This file is part of the Inventra Controller Driver for Linux.
- */
- #include <common.h>
- #include <dm.h>
- #include <log.h>
- #include <serial.h>
- #include <dm/device-internal.h>
- #include <dm/device_compat.h>
- #include <dm/lists.h>
- #include <linux/err.h>
- #include <linux/usb/otg.h>
- #include <asm/omap_common.h>
- #include <asm/omap_musb.h>
- #include <twl4030.h>
- #include <twl6030.h>
- #include "linux-compat.h"
- #include "musb_core.h"
- #include "omap2430.h"
- #include "musb_uboot.h"
- static inline void omap2430_low_level_exit(struct musb *musb)
- {
- u32 l;
- /* in any role */
- l = musb_readl(musb->mregs, OTG_FORCESTDBY);
- l |= ENABLEFORCE; /* enable MSTANDBY */
- musb_writel(musb->mregs, OTG_FORCESTDBY, l);
- }
- static inline void omap2430_low_level_init(struct musb *musb)
- {
- u32 l;
- l = musb_readl(musb->mregs, OTG_FORCESTDBY);
- l &= ~ENABLEFORCE; /* disable MSTANDBY */
- musb_writel(musb->mregs, OTG_FORCESTDBY, l);
- }
- static int omap2430_musb_init(struct musb *musb)
- {
- u32 l;
- int status = 0;
- unsigned long int start;
- struct omap_musb_board_data *data =
- (struct omap_musb_board_data *)musb->controller;
- /* Reset the controller */
- musb_writel(musb->mregs, OTG_SYSCONFIG, SOFTRST);
- start = get_timer(0);
- while (1) {
- l = musb_readl(musb->mregs, OTG_SYSCONFIG);
- if ((l & SOFTRST) == 0)
- break;
- if (get_timer(start) > (CONFIG_SYS_HZ / 1000)) {
- dev_err(musb->controller, "MUSB reset is taking too long\n");
- return -ENODEV;
- }
- }
- l = musb_readl(musb->mregs, OTG_INTERFSEL);
- if (data->interface_type == MUSB_INTERFACE_UTMI) {
- /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
- l &= ~ULPI_12PIN; /* Disable ULPI */
- l |= UTMI_8BIT; /* Enable UTMI */
- } else {
- l |= ULPI_12PIN;
- }
- musb_writel(musb->mregs, OTG_INTERFSEL, l);
- pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
- "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
- musb_readl(musb->mregs, OTG_REVISION),
- musb_readl(musb->mregs, OTG_SYSCONFIG),
- musb_readl(musb->mregs, OTG_SYSSTATUS),
- musb_readl(musb->mregs, OTG_INTERFSEL),
- musb_readl(musb->mregs, OTG_SIMENABLE));
- return 0;
- err1:
- return status;
- }
- static int omap2430_musb_enable(struct musb *musb)
- {
- #ifdef CONFIG_TWL4030_USB
- if (twl4030_usb_ulpi_init()) {
- serial_printf("ERROR: %s Could not initialize PHY\n",
- __PRETTY_FUNCTION__);
- }
- #endif
- #ifdef CONFIG_TWL6030_POWER
- twl6030_usb_device_settings();
- #endif
- #ifdef CONFIG_OMAP44XX
- u32 *usbotghs_control = (u32 *)((*ctrl)->control_usbotghs_ctrl);
- *usbotghs_control = USBOTGHS_CONTROL_AVALID |
- USBOTGHS_CONTROL_VBUSVALID | USBOTGHS_CONTROL_IDDIG;
- #endif
- return 0;
- }
- static void omap2430_musb_disable(struct musb *musb)
- {
- }
- static int omap2430_musb_exit(struct musb *musb)
- {
- del_timer_sync(&musb_idle_timer);
- omap2430_low_level_exit(musb);
- return 0;
- }
- const struct musb_platform_ops omap2430_ops = {
- .init = omap2430_musb_init,
- .exit = omap2430_musb_exit,
- .enable = omap2430_musb_enable,
- .disable = omap2430_musb_disable,
- };
- #if CONFIG_IS_ENABLED(DM_USB)
- struct omap2430_musb_platdata {
- void *base;
- void *ctrl_mod_base;
- struct musb_hdrc_platform_data plat;
- struct musb_hdrc_config musb_config;
- struct omap_musb_board_data otg_board_data;
- };
- static int omap2430_musb_ofdata_to_platdata(struct udevice *dev)
- {
- struct omap2430_musb_platdata *platdata = dev_get_platdata(dev);
- const void *fdt = gd->fdt_blob;
- int node = dev_of_offset(dev);
- platdata->base = (void *)dev_read_addr_ptr(dev);
- platdata->musb_config.multipoint = fdtdec_get_int(fdt, node,
- "multipoint",
- -1);
- if (platdata->musb_config.multipoint < 0) {
- pr_err("MUSB multipoint DT entry missing\n");
- return -ENOENT;
- }
- platdata->musb_config.dyn_fifo = 1;
- platdata->musb_config.num_eps = fdtdec_get_int(fdt, node,
- "num-eps", -1);
- if (platdata->musb_config.num_eps < 0) {
- pr_err("MUSB num-eps DT entry missing\n");
- return -ENOENT;
- }
- platdata->musb_config.ram_bits = fdtdec_get_int(fdt, node,
- "ram-bits", -1);
- if (platdata->musb_config.ram_bits < 0) {
- pr_err("MUSB ram-bits DT entry missing\n");
- return -ENOENT;
- }
- platdata->plat.power = fdtdec_get_int(fdt, node,
- "power", -1);
- if (platdata->plat.power < 0) {
- pr_err("MUSB power DT entry missing\n");
- return -ENOENT;
- }
- platdata->otg_board_data.interface_type = fdtdec_get_int(fdt, node,
- "interface-type", -1);
- if (platdata->otg_board_data.interface_type < 0) {
- pr_err("MUSB interface-type DT entry missing\n");
- return -ENOENT;
- }
- #if 0 /* In a perfect world, mode would be set to OTG, mode 3 from DT */
- platdata->plat.mode = fdtdec_get_int(fdt, node,
- "mode", -1);
- if (platdata->plat.mode < 0) {
- pr_err("MUSB mode DT entry missing\n");
- return -ENOENT;
- }
- #else /* MUSB_OTG, it doesn't work */
- #ifdef CONFIG_USB_MUSB_HOST /* Host seems to be the only option that works */
- platdata->plat.mode = MUSB_HOST;
- #else /* For that matter, MUSB_PERIPHERAL doesn't either */
- platdata->plat.mode = MUSB_PERIPHERAL;
- #endif
- #endif
- platdata->otg_board_data.dev = dev;
- platdata->plat.config = &platdata->musb_config;
- platdata->plat.platform_ops = &omap2430_ops;
- platdata->plat.board_data = &platdata->otg_board_data;
- return 0;
- }
- static int omap2430_musb_probe(struct udevice *dev)
- {
- #ifdef CONFIG_USB_MUSB_HOST
- struct musb_host_data *host = dev_get_priv(dev);
- #else
- struct musb *musbp;
- #endif
- struct omap2430_musb_platdata *platdata = dev_get_platdata(dev);
- struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
- struct omap_musb_board_data *otg_board_data;
- int ret = 0;
- void *base = dev_read_addr_ptr(dev);
- priv->desc_before_addr = true;
- otg_board_data = &platdata->otg_board_data;
- #ifdef CONFIG_USB_MUSB_HOST
- host->host = musb_init_controller(&platdata->plat,
- (struct device *)otg_board_data,
- platdata->base);
- if (!host->host) {
- return -EIO;
- }
- ret = musb_lowlevel_init(host);
- #else
- musbp = musb_register(&platdata->plat,
- (struct device *)otg_board_data,
- platdata->base);
- if (IS_ERR_OR_NULL(musbp))
- return -EINVAL;
- #endif
- return ret;
- }
- static int omap2430_musb_remove(struct udevice *dev)
- {
- struct musb_host_data *host = dev_get_priv(dev);
- musb_stop(host->host);
- return 0;
- }
- static const struct udevice_id omap2430_musb_ids[] = {
- { .compatible = "ti,omap3-musb" },
- { .compatible = "ti,omap4-musb" },
- { }
- };
- U_BOOT_DRIVER(omap2430_musb) = {
- .name = "omap2430-musb",
- #ifdef CONFIG_USB_MUSB_HOST
- .id = UCLASS_USB,
- #else
- .id = UCLASS_USB_GADGET_GENERIC,
- #endif
- .of_match = omap2430_musb_ids,
- .ofdata_to_platdata = omap2430_musb_ofdata_to_platdata,
- .probe = omap2430_musb_probe,
- .remove = omap2430_musb_remove,
- #ifdef CONFIG_USB_MUSB_HOST
- .ops = &musb_usb_ops,
- #endif
- .platdata_auto_alloc_size = sizeof(struct omap2430_musb_platdata),
- .priv_auto_alloc_size = sizeof(struct musb_host_data),
- };
- #endif /* CONFIG_IS_ENABLED(DM_USB) */
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