mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-31 14:28:52 +09:00
344 lines
7.6 KiB
C
344 lines
7.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* MISC driver for TI MUSB Glue.
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*
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* (C) Copyright 2016
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* Texas Instruments Incorporated, <www.ti.com>
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*/
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#include <common.h>
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#include <command.h>
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#include <console.h>
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#include <dm.h>
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#include <log.h>
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#include <malloc.h>
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#include <linux/usb/otg.h>
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#include <dm/device-internal.h>
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#include <dm/lists.h>
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#include <asm/io.h>
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#include <asm/omap_musb.h>
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#include "musb_uboot.h"
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DECLARE_GLOBAL_DATA_PTR;
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#if CONFIG_IS_ENABLED(DM_USB)
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/* USB 2.0 PHY Control */
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#define CM_PHY_PWRDN (1 << 0)
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#define CM_PHY_OTG_PWRDN (1 << 1)
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#define OTGVDET_EN (1 << 19)
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#define OTGSESSENDEN (1 << 20)
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#define AM335X_USB0_CTRL 0x0
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#define AM335X_USB1_CTRL 0x8
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static void ti_musb_set_phy_power(struct udevice *dev, u8 on)
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{
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struct ti_musb_platdata *platdata = dev_get_platdata(dev);
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if (!platdata->ctrl_mod_base)
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return;
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if (on) {
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clrsetbits_le32(platdata->ctrl_mod_base,
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CM_PHY_PWRDN | CM_PHY_OTG_PWRDN,
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OTGVDET_EN | OTGSESSENDEN);
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} else {
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clrsetbits_le32(platdata->ctrl_mod_base, 0,
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CM_PHY_PWRDN | CM_PHY_OTG_PWRDN);
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}
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}
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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static int ti_musb_get_usb_index(int node)
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{
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const void *fdt = gd->fdt_blob;
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int i = 0;
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char path[64];
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const char *alias_path;
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char alias[16];
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fdt_get_path(fdt, node, path, sizeof(path));
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do {
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snprintf(alias, sizeof(alias), "usb%d", i);
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alias_path = fdt_get_alias(fdt, alias);
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if (alias_path == NULL) {
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debug("USB index not found\n");
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return -ENOENT;
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}
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if (!strcmp(path, alias_path))
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return i;
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i++;
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} while (alias_path);
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return -ENOENT;
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}
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static int ti_musb_ofdata_to_platdata(struct udevice *dev)
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{
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struct ti_musb_platdata *platdata = dev_get_platdata(dev);
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const void *fdt = gd->fdt_blob;
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int node = dev_of_offset(dev);
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int phys;
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int ctrl_mod;
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int usb_index;
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struct musb_hdrc_config *musb_config;
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platdata->base = (void *)devfdt_get_addr_index(dev, 1);
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phys = fdtdec_lookup_phandle(fdt, node, "phys");
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ctrl_mod = fdtdec_lookup_phandle(fdt, phys, "ti,ctrl_mod");
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platdata->ctrl_mod_base = (void *)fdtdec_get_addr(fdt, ctrl_mod, "reg");
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usb_index = ti_musb_get_usb_index(node);
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switch (usb_index) {
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case 1:
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platdata->ctrl_mod_base += AM335X_USB1_CTRL;
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break;
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case 0:
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platdata->ctrl_mod_base += AM335X_USB0_CTRL;
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break;
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default:
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break;
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}
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musb_config = malloc(sizeof(struct musb_hdrc_config));
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memset(musb_config, 0, sizeof(struct musb_hdrc_config));
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musb_config->multipoint = fdtdec_get_int(fdt, node,
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"mentor,multipoint", -1);
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if (musb_config->multipoint < 0) {
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pr_err("MUSB multipoint DT entry missing\n");
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return -ENOENT;
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}
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musb_config->dyn_fifo = 1;
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musb_config->num_eps = fdtdec_get_int(fdt, node, "mentor,num-eps",
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-1);
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if (musb_config->num_eps < 0) {
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pr_err("MUSB num-eps DT entry missing\n");
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return -ENOENT;
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}
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musb_config->ram_bits = fdtdec_get_int(fdt, node, "mentor,ram-bits",
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-1);
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if (musb_config->ram_bits < 0) {
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pr_err("MUSB ram-bits DT entry missing\n");
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return -ENOENT;
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}
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platdata->plat.config = musb_config;
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platdata->plat.power = fdtdec_get_int(fdt, node, "mentor,power", -1);
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if (platdata->plat.power < 0) {
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pr_err("MUSB mentor,power DT entry missing\n");
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return -ENOENT;
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}
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platdata->plat.platform_ops = &musb_dsps_ops;
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return 0;
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}
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#endif
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static int ti_musb_host_probe(struct udevice *dev)
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{
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struct musb_host_data *host = dev_get_priv(dev);
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struct ti_musb_platdata *platdata = dev_get_platdata(dev);
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struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
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int ret;
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priv->desc_before_addr = true;
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host->host = musb_init_controller(&platdata->plat,
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NULL,
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platdata->base);
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if (!host->host)
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return -EIO;
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ti_musb_set_phy_power(dev, 1);
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ret = musb_lowlevel_init(host);
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return ret;
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}
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static int ti_musb_host_remove(struct udevice *dev)
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{
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struct musb_host_data *host = dev_get_priv(dev);
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musb_stop(host->host);
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ti_musb_set_phy_power(dev, 0);
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return 0;
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}
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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static int ti_musb_host_ofdata_to_platdata(struct udevice *dev)
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{
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struct ti_musb_platdata *platdata = dev_get_platdata(dev);
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const void *fdt = gd->fdt_blob;
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int node = dev_of_offset(dev);
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int ret;
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ret = ti_musb_ofdata_to_platdata(dev);
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if (ret) {
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pr_err("platdata dt parse error\n");
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return ret;
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}
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platdata->plat.mode = MUSB_HOST;
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return 0;
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}
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#endif
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U_BOOT_DRIVER(ti_musb_host) = {
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.name = "ti-musb-host",
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.id = UCLASS_USB,
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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.ofdata_to_platdata = ti_musb_host_ofdata_to_platdata,
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#endif
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.probe = ti_musb_host_probe,
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.remove = ti_musb_host_remove,
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.ops = &musb_usb_ops,
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.platdata_auto_alloc_size = sizeof(struct ti_musb_platdata),
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.priv_auto_alloc_size = sizeof(struct musb_host_data),
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};
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#if CONFIG_IS_ENABLED(DM_USB_GADGET)
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struct ti_musb_peripheral {
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struct musb *periph;
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};
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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static int ti_musb_peripheral_ofdata_to_platdata(struct udevice *dev)
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{
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struct ti_musb_platdata *platdata = dev_get_platdata(dev);
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const void *fdt = gd->fdt_blob;
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int node = dev_of_offset(dev);
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int ret;
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ret = ti_musb_ofdata_to_platdata(dev);
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if (ret) {
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pr_err("platdata dt parse error\n");
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return ret;
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}
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platdata->plat.mode = MUSB_PERIPHERAL;
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return 0;
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}
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#endif
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int dm_usb_gadget_handle_interrupts(struct udevice *dev)
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{
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struct ti_musb_peripheral *priv = dev_get_priv(dev);
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priv->periph->isr(0, priv->periph);
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return 0;
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}
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static int ti_musb_peripheral_probe(struct udevice *dev)
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{
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struct ti_musb_peripheral *priv = dev_get_priv(dev);
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struct ti_musb_platdata *platdata = dev_get_platdata(dev);
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int ret;
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priv->periph = musb_init_controller(&platdata->plat,
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NULL,
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platdata->base);
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if (!priv->periph)
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return -EIO;
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ti_musb_set_phy_power(dev, 1);
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musb_gadget_setup(priv->periph);
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return usb_add_gadget_udc((struct device *)dev, &priv->periph->g);
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}
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static int ti_musb_peripheral_remove(struct udevice *dev)
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{
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struct ti_musb_peripheral *priv = dev_get_priv(dev);
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usb_del_gadget_udc(&priv->periph->g);
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ti_musb_set_phy_power(dev, 0);
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return 0;
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}
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U_BOOT_DRIVER(ti_musb_peripheral) = {
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.name = "ti-musb-peripheral",
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.id = UCLASS_USB_GADGET_GENERIC,
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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.ofdata_to_platdata = ti_musb_peripheral_ofdata_to_platdata,
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#endif
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.probe = ti_musb_peripheral_probe,
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.remove = ti_musb_peripheral_remove,
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.ops = &musb_usb_ops,
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.platdata_auto_alloc_size = sizeof(struct ti_musb_platdata),
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.priv_auto_alloc_size = sizeof(struct ti_musb_peripheral),
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.flags = DM_FLAG_PRE_RELOC,
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};
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#endif
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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static int ti_musb_wrapper_bind(struct udevice *parent)
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{
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ofnode node;
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int ret;
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ofnode_for_each_subnode(node, parent->node) {
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struct udevice *dev;
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const char *name = ofnode_get_name(node);
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enum usb_dr_mode dr_mode;
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struct driver *drv;
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if (strncmp(name, "usb@", 4))
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continue;
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dr_mode = usb_get_dr_mode(node);
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switch (dr_mode) {
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case USB_DR_MODE_PERIPHERAL:
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/* Bind MUSB device */
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ret = device_bind_driver_to_node(parent,
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"ti-musb-peripheral",
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name,
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node,
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&dev);
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if (ret)
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pr_err("musb - not able to bind usb peripheral node\n");
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break;
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case USB_DR_MODE_HOST:
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/* Bind MUSB host */
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ret = device_bind_driver_to_node(parent,
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"ti-musb-host",
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name,
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node,
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&dev);
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if (ret)
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pr_err("musb - not able to bind usb host node\n");
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break;
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default:
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break;
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};
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}
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return 0;
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}
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static const struct udevice_id ti_musb_ids[] = {
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{ .compatible = "ti,am33xx-usb" },
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{ }
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};
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U_BOOT_DRIVER(ti_musb_wrapper) = {
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.name = "ti-musb-wrapper",
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.id = UCLASS_MISC,
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.of_match = ti_musb_ids,
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.bind = ti_musb_wrapper_bind,
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};
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#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
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#endif /* CONFIG_IS_ENABLED(DM_USB) */
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