123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179 |
- // SPDX-License-Identifier: GPL-2.0+
- /* Copyright (C) 2019 Stephan Gerhold */
- #include <common.h>
- #include <dm.h>
- #include <generic-phy.h>
- #include <dm/device_compat.h>
- #include "musb_uboot.h"
- static struct musb_hdrc_config ux500_musb_hdrc_config = {
- .multipoint = true,
- .dyn_fifo = true,
- .num_eps = 16,
- .ram_bits = 16,
- };
- struct ux500_glue {
- struct musb_host_data mdata;
- struct device dev;
- struct phy phy;
- bool enabled;
- };
- #define to_ux500_glue(d) container_of(d, struct ux500_glue, dev)
- static int ux500_musb_enable(struct musb *musb)
- {
- struct ux500_glue *glue = to_ux500_glue(musb->controller);
- int ret;
- if (glue->enabled)
- return 0;
- ret = generic_phy_power_on(&glue->phy);
- if (ret) {
- printf("%s: failed to power on USB PHY\n", __func__);
- return ret;
- }
- glue->enabled = true;
- return 0;
- }
- static void ux500_musb_disable(struct musb *musb)
- {
- struct ux500_glue *glue = to_ux500_glue(musb->controller);
- int ret;
- if (!glue->enabled)
- return;
- ret = generic_phy_power_off(&glue->phy);
- if (ret) {
- printf("%s: failed to power off USB PHY\n", __func__);
- return;
- }
- glue->enabled = false;
- }
- static int ux500_musb_init(struct musb *musb)
- {
- struct ux500_glue *glue = to_ux500_glue(musb->controller);
- int ret;
- ret = generic_phy_init(&glue->phy);
- if (ret) {
- printf("%s: failed to init USB PHY\n", __func__);
- return ret;
- }
- return 0;
- }
- static int ux500_musb_exit(struct musb *musb)
- {
- struct ux500_glue *glue = to_ux500_glue(musb->controller);
- int ret;
- ret = generic_phy_exit(&glue->phy);
- if (ret) {
- printf("%s: failed to exit USB PHY\n", __func__);
- return ret;
- }
- return 0;
- }
- static const struct musb_platform_ops ux500_musb_ops = {
- .init = ux500_musb_init,
- .exit = ux500_musb_exit,
- .enable = ux500_musb_enable,
- .disable = ux500_musb_disable,
- };
- int dm_usb_gadget_handle_interrupts(struct udevice *dev)
- {
- struct ux500_glue *glue = dev_get_priv(dev);
- glue->mdata.host->isr(0, glue->mdata.host);
- return 0;
- }
- static int ux500_musb_probe(struct udevice *dev)
- {
- #ifdef CONFIG_USB_MUSB_HOST
- struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
- #endif
- struct ux500_glue *glue = dev_get_priv(dev);
- struct musb_host_data *host = &glue->mdata;
- struct musb_hdrc_platform_data pdata;
- void *base = dev_read_addr_ptr(dev);
- int ret;
- if (!base)
- return -EINVAL;
- ret = generic_phy_get_by_name(dev, "usb", &glue->phy);
- if (ret) {
- dev_err(dev, "failed to get USB PHY: %d\n", ret);
- return ret;
- }
- memset(&pdata, 0, sizeof(pdata));
- pdata.platform_ops = &ux500_musb_ops;
- pdata.config = &ux500_musb_hdrc_config;
- #ifdef CONFIG_USB_MUSB_HOST
- priv->desc_before_addr = true;
- pdata.mode = MUSB_HOST;
- host->host = musb_init_controller(&pdata, &glue->dev, base);
- if (!host->host)
- return -EIO;
- return musb_lowlevel_init(host);
- #else
- pdata.mode = MUSB_PERIPHERAL;
- host->host = musb_init_controller(&pdata, &glue->dev, base);
- if (!host->host)
- return -EIO;
- return usb_add_gadget_udc(&glue->dev, &host->host->g);
- #endif
- }
- static int ux500_musb_remove(struct udevice *dev)
- {
- struct ux500_glue *glue = dev_get_priv(dev);
- struct musb_host_data *host = &glue->mdata;
- usb_del_gadget_udc(&host->host->g);
- musb_stop(host->host);
- free(host->host);
- host->host = NULL;
- return 0;
- }
- static const struct udevice_id ux500_musb_ids[] = {
- { .compatible = "stericsson,db8500-musb" },
- { }
- };
- U_BOOT_DRIVER(ux500_musb) = {
- .name = "ux500-musb",
- #ifdef CONFIG_USB_MUSB_HOST
- .id = UCLASS_USB,
- #else
- .id = UCLASS_USB_GADGET_GENERIC,
- #endif
- .of_match = ux500_musb_ids,
- .probe = ux500_musb_probe,
- .remove = ux500_musb_remove,
- #ifdef CONFIG_USB_MUSB_HOST
- .ops = &musb_usb_ops,
- #endif
- .plat_auto = sizeof(struct usb_plat),
- .priv_auto = sizeof(struct ux500_glue),
- };
|