| // 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_plat { |
| 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_of_to_plat(struct udevice *dev) |
| { |
| struct omap2430_musb_plat *plat = dev_get_plat(dev); |
| const void *fdt = gd->fdt_blob; |
| int node = dev_of_offset(dev); |
| |
| plat->base = (void *)dev_read_addr_ptr(dev); |
| |
| plat->musb_config.multipoint = fdtdec_get_int(fdt, node, "multipoint", |
| -1); |
| if (plat->musb_config.multipoint < 0) { |
| pr_err("MUSB multipoint DT entry missing\n"); |
| return -ENOENT; |
| } |
| |
| plat->musb_config.dyn_fifo = 1; |
| plat->musb_config.num_eps = fdtdec_get_int(fdt, node, "num-eps", -1); |
| if (plat->musb_config.num_eps < 0) { |
| pr_err("MUSB num-eps DT entry missing\n"); |
| return -ENOENT; |
| } |
| |
| plat->musb_config.ram_bits = fdtdec_get_int(fdt, node, "ram-bits", -1); |
| if (plat->musb_config.ram_bits < 0) { |
| pr_err("MUSB ram-bits DT entry missing\n"); |
| return -ENOENT; |
| } |
| |
| plat->plat.power = fdtdec_get_int(fdt, node, "power", -1); |
| if (plat->plat.power < 0) { |
| pr_err("MUSB power DT entry missing\n"); |
| return -ENOENT; |
| } |
| |
| plat->otg_board_data.interface_type = fdtdec_get_int(fdt, node, |
| "interface-type", |
| -1); |
| if (plat->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 */ |
| plat->plat.mode = fdtdec_get_int(fdt, node, "mode", -1); |
| if (plat->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 */ |
| plat->plat.mode = MUSB_HOST; |
| #else /* For that matter, MUSB_PERIPHERAL doesn't either */ |
| plat->plat.mode = MUSB_PERIPHERAL; |
| #endif |
| #endif |
| plat->otg_board_data.dev = dev; |
| plat->plat.config = &plat->musb_config; |
| plat->plat.platform_ops = &omap2430_ops; |
| plat->plat.board_data = &plat->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_plat *plat = dev_get_plat(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 = &plat->otg_board_data; |
| |
| #ifdef CONFIG_USB_MUSB_HOST |
| host->host = musb_init_controller(&plat->plat, |
| (struct device *)otg_board_data, |
| plat->base); |
| if (!host->host) { |
| return -EIO; |
| } |
| |
| ret = musb_lowlevel_init(host); |
| #else |
| musbp = musb_register(&plat->plat, (struct device *)otg_board_data, |
| plat->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, |
| .of_to_plat = omap2430_musb_of_to_plat, |
| .probe = omap2430_musb_probe, |
| .remove = omap2430_musb_remove, |
| #ifdef CONFIG_USB_MUSB_HOST |
| .ops = &musb_usb_ops, |
| #endif |
| .plat_auto = sizeof(struct omap2430_musb_plat), |
| .priv_auto = sizeof(struct musb_host_data), |
| }; |
| |
| #endif /* CONFIG_IS_ENABLED(DM_USB) */ |