mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
8a8d24bdf1
Try to maintain some consistency between these variables by using _plat as a suffix for them. Signed-off-by: Simon Glass <sjg@chromium.org>
420 lines
9.5 KiB
C
420 lines
9.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Mediatek "glue layer"
|
|
*
|
|
* Copyright (C) 2019-2021 by Mediatek
|
|
* Based on the AllWinner SUNXI "glue layer" code.
|
|
* Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
|
|
* Copyright (C) 2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
|
|
*
|
|
* This file is part of the Inventra Controller Driver for Linux.
|
|
*/
|
|
#include <common.h>
|
|
#include <clk.h>
|
|
#include <dm.h>
|
|
#include <dm/device_compat.h>
|
|
#include <dm/lists.h>
|
|
#include <dm/root.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/usb/musb.h>
|
|
#include <usb.h>
|
|
#include "linux-compat.h"
|
|
#include "musb_core.h"
|
|
#include "musb_uboot.h"
|
|
|
|
#define DBG_I(fmt, ...) \
|
|
pr_info(fmt, ##__VA_ARGS__)
|
|
|
|
struct mtk_musb_config {
|
|
struct musb_hdrc_config *config;
|
|
};
|
|
|
|
struct mtk_musb_glue {
|
|
struct musb_host_data mdata;
|
|
struct clk usbpllclk;
|
|
struct clk usbmcuclk;
|
|
struct clk usbclk;
|
|
struct mtk_musb_config *cfg;
|
|
struct device dev;
|
|
};
|
|
|
|
#define to_mtk_musb_glue(d) container_of(d, struct mtk_musb_glue, dev)
|
|
|
|
/******************************************************************************
|
|
* phy settings
|
|
******************************************************************************/
|
|
#define USB20_PHY_BASE 0x11110800
|
|
#define USBPHY_READ8(offset) \
|
|
readb((void *)(USB20_PHY_BASE + (offset)))
|
|
#define USBPHY_WRITE8(offset, value) \
|
|
writeb(value, (void *)(USB20_PHY_BASE + (offset)))
|
|
#define USBPHY_SET8(offset, mask) \
|
|
USBPHY_WRITE8(offset, (USBPHY_READ8(offset)) | (mask))
|
|
#define USBPHY_CLR8(offset, mask) \
|
|
USBPHY_WRITE8(offset, (USBPHY_READ8(offset)) & (~(mask)))
|
|
|
|
static void mt_usb_phy_poweron(void)
|
|
{
|
|
/*
|
|
* switch to USB function.
|
|
* (system register, force ip into usb mode).
|
|
*/
|
|
USBPHY_CLR8(0x6b, 0x04);
|
|
USBPHY_CLR8(0x6e, 0x01);
|
|
USBPHY_CLR8(0x21, 0x03);
|
|
|
|
/* RG_USB20_BC11_SW_EN = 1'b0 */
|
|
USBPHY_SET8(0x22, 0x04);
|
|
USBPHY_CLR8(0x1a, 0x80);
|
|
|
|
/* RG_USB20_DP_100K_EN = 1'b0 */
|
|
/* RG_USB20_DP_100K_EN = 1'b0 */
|
|
USBPHY_CLR8(0x22, 0x03);
|
|
|
|
/*OTG enable*/
|
|
USBPHY_SET8(0x20, 0x10);
|
|
/* release force suspendm */
|
|
USBPHY_CLR8(0x6a, 0x04);
|
|
|
|
mdelay(800);
|
|
|
|
/* force enter device mode */
|
|
USBPHY_CLR8(0x6c, 0x10);
|
|
USBPHY_SET8(0x6c, 0x2E);
|
|
USBPHY_SET8(0x6d, 0x3E);
|
|
}
|
|
|
|
static void mt_usb_phy_savecurrent(void)
|
|
{
|
|
/*
|
|
* switch to USB function.
|
|
* (system register, force ip into usb mode).
|
|
*/
|
|
USBPHY_CLR8(0x6b, 0x04);
|
|
USBPHY_CLR8(0x6e, 0x01);
|
|
USBPHY_CLR8(0x21, 0x03);
|
|
|
|
/* release force suspendm */
|
|
USBPHY_CLR8(0x6a, 0x04);
|
|
USBPHY_SET8(0x68, 0x04);
|
|
/* RG_DPPULLDOWN./RG_DMPULLDOWN. */
|
|
USBPHY_SET8(0x68, 0xc0);
|
|
/* RG_XCVRSEL[1:0] = 2'b01 */
|
|
USBPHY_CLR8(0x68, 0x30);
|
|
USBPHY_SET8(0x68, 0x10);
|
|
/* RG_TERMSEL = 1'b1 */
|
|
USBPHY_SET8(0x68, 0x04);
|
|
/* RG_DATAIN[3:0] = 4'b0000 */
|
|
USBPHY_CLR8(0x69, 0x3c);
|
|
|
|
/*
|
|
* force_dp_pulldown, force_dm_pulldown,
|
|
* force_xcversel, force_termsel.
|
|
*/
|
|
USBPHY_SET8(0x6a, 0xba);
|
|
|
|
/* RG_USB20_BC11_SW_EN = 1'b0 */
|
|
USBPHY_CLR8(0x1a, 0x80);
|
|
/* RG_USB20_OTG_VBUSSCMP_EN = 1'b0 */
|
|
USBPHY_CLR8(0x1a, 0x10);
|
|
|
|
mdelay(800);
|
|
|
|
USBPHY_CLR8(0x6a, 0x04);
|
|
/* rg_usb20_pll_stable = 1 */
|
|
//USBPHY_SET8(0x63, 0x02);
|
|
|
|
mdelay(1);
|
|
|
|
/* force suspendm = 1 */
|
|
//USBPHY_SET8(0x6a, 0x04);
|
|
}
|
|
|
|
static void mt_usb_phy_recover(void)
|
|
{
|
|
/* clean PUPD_BIST_EN */
|
|
/* PUPD_BIST_EN = 1'b0 */
|
|
/* PMIC will use it to detect charger type */
|
|
USBPHY_CLR8(0x1d, 0x10);
|
|
|
|
/* force_uart_en = 1'b0 */
|
|
USBPHY_CLR8(0x6b, 0x04);
|
|
/* RG_UART_EN = 1'b0 */
|
|
USBPHY_CLR8(0x6e, 0x01);
|
|
/* force_uart_en = 1'b0 */
|
|
USBPHY_CLR8(0x6a, 0x04);
|
|
|
|
USBPHY_CLR8(0x21, 0x03);
|
|
USBPHY_CLR8(0x68, 0xf4);
|
|
|
|
/* RG_DATAIN[3:0] = 4'b0000 */
|
|
USBPHY_CLR8(0x69, 0x3c);
|
|
|
|
USBPHY_CLR8(0x6a, 0xba);
|
|
|
|
/* RG_USB20_BC11_SW_EN = 1'b0 */
|
|
USBPHY_CLR8(0x1a, 0x80);
|
|
/* RG_USB20_OTG_VBUSSCMP_EN = 1'b1 */
|
|
USBPHY_SET8(0x1a, 0x10);
|
|
|
|
//HQA adjustment
|
|
USBPHY_CLR8(0x18, 0x08);
|
|
USBPHY_SET8(0x18, 0x06);
|
|
mdelay(800);
|
|
|
|
/* force enter device mode */
|
|
//USBPHY_CLR8(0x6c, 0x10);
|
|
//USBPHY_SET8(0x6c, 0x2E);
|
|
//USBPHY_SET8(0x6d, 0x3E);
|
|
|
|
/* enable VRT internal R architecture */
|
|
/* RG_USB20_INTR_EN = 1'b1 */
|
|
USBPHY_SET8(0x00, 0x20);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* MUSB Glue code
|
|
******************************************************************************/
|
|
|
|
static irqreturn_t mtk_musb_interrupt(int irq, void *__hci)
|
|
{
|
|
struct musb *musb = __hci;
|
|
irqreturn_t retval = IRQ_NONE;
|
|
|
|
/* read and flush interrupts */
|
|
musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
|
|
// last_int_usb = musb->int_usb;
|
|
if (musb->int_usb)
|
|
musb_writeb(musb->mregs, MUSB_INTRUSB, musb->int_usb);
|
|
musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
|
|
if (musb->int_tx)
|
|
musb_writew(musb->mregs, MUSB_INTRTX, musb->int_tx);
|
|
musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
|
|
if (musb->int_rx)
|
|
musb_writew(musb->mregs, MUSB_INTRRX, musb->int_rx);
|
|
|
|
if (musb->int_usb || musb->int_tx || musb->int_rx)
|
|
retval |= musb_interrupt(musb);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* musb_core does not call enable / disable in a balanced manner <sigh> */
|
|
static bool enabled;
|
|
|
|
static int mtk_musb_enable(struct musb *musb)
|
|
{
|
|
struct mtk_musb_glue *glue = to_mtk_musb_glue(musb->controller);
|
|
|
|
DBG_I("%s():\n", __func__);
|
|
|
|
musb_ep_select(musb->mregs, 0);
|
|
musb_writeb(musb->mregs, MUSB_FADDR, 0);
|
|
|
|
if (enabled)
|
|
return 0;
|
|
|
|
mt_usb_phy_recover();
|
|
|
|
enabled = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mtk_musb_disable(struct musb *musb)
|
|
{
|
|
struct mtk_musb_glue *glue = to_mtk_musb_glue(musb->controller);
|
|
int ret;
|
|
|
|
DBG_I("%s():\n", __func__);
|
|
|
|
if (!enabled)
|
|
return;
|
|
|
|
mt_usb_phy_savecurrent();
|
|
|
|
enabled = false;
|
|
}
|
|
|
|
static int mtk_musb_init(struct musb *musb)
|
|
{
|
|
struct mtk_musb_glue *glue = to_mtk_musb_glue(musb->controller);
|
|
int ret;
|
|
|
|
DBG_I("%s():\n", __func__);
|
|
|
|
ret = clk_enable(&glue->usbpllclk);
|
|
if (ret) {
|
|
dev_err(musb->controller, "failed to enable usbpll clock\n");
|
|
return ret;
|
|
}
|
|
ret = clk_enable(&glue->usbmcuclk);
|
|
if (ret) {
|
|
dev_err(musb->controller, "failed to enable usbmcu clock\n");
|
|
return ret;
|
|
}
|
|
ret = clk_enable(&glue->usbclk);
|
|
if (ret) {
|
|
dev_err(musb->controller, "failed to enable usb clock\n");
|
|
return ret;
|
|
}
|
|
|
|
musb->isr = mtk_musb_interrupt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mtk_musb_exit(struct musb *musb)
|
|
{
|
|
struct mtk_musb_glue *glue = to_mtk_musb_glue(musb->controller);
|
|
|
|
clk_disable(&glue->usbclk);
|
|
clk_disable(&glue->usbmcuclk);
|
|
clk_disable(&glue->usbpllclk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct musb_platform_ops mtk_musb_ops = {
|
|
.init = mtk_musb_init,
|
|
.exit = mtk_musb_exit,
|
|
.enable = mtk_musb_enable,
|
|
.disable = mtk_musb_disable,
|
|
};
|
|
|
|
/* MTK OTG supports up to 7 endpoints */
|
|
#define MTK_MUSB_MAX_EP_NUM 8
|
|
#define MTK_MUSB_RAM_BITS 16
|
|
|
|
static struct musb_fifo_cfg mtk_musb_mode_cfg[] = {
|
|
MUSB_EP_FIFO_SINGLE(1, FIFO_TX, 512),
|
|
MUSB_EP_FIFO_SINGLE(1, FIFO_RX, 512),
|
|
MUSB_EP_FIFO_SINGLE(2, FIFO_TX, 512),
|
|
MUSB_EP_FIFO_SINGLE(2, FIFO_RX, 512),
|
|
MUSB_EP_FIFO_SINGLE(3, FIFO_TX, 512),
|
|
MUSB_EP_FIFO_SINGLE(3, FIFO_RX, 512),
|
|
MUSB_EP_FIFO_SINGLE(4, FIFO_TX, 512),
|
|
MUSB_EP_FIFO_SINGLE(4, FIFO_RX, 512),
|
|
MUSB_EP_FIFO_SINGLE(5, FIFO_TX, 512),
|
|
MUSB_EP_FIFO_SINGLE(5, FIFO_RX, 512),
|
|
MUSB_EP_FIFO_SINGLE(6, FIFO_TX, 512),
|
|
MUSB_EP_FIFO_SINGLE(6, FIFO_RX, 512),
|
|
MUSB_EP_FIFO_SINGLE(7, FIFO_TX, 512),
|
|
MUSB_EP_FIFO_SINGLE(7, FIFO_RX, 512),
|
|
};
|
|
|
|
static struct musb_hdrc_config musb_config = {
|
|
.fifo_cfg = mtk_musb_mode_cfg,
|
|
.fifo_cfg_size = ARRAY_SIZE(mtk_musb_mode_cfg),
|
|
.multipoint = true,
|
|
.dyn_fifo = true,
|
|
.num_eps = MTK_MUSB_MAX_EP_NUM,
|
|
.ram_bits = MTK_MUSB_RAM_BITS,
|
|
};
|
|
|
|
static int musb_usb_probe(struct udevice *dev)
|
|
{
|
|
struct mtk_musb_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;
|
|
|
|
DBG_I("%s():\n", __func__);
|
|
|
|
#ifdef CONFIG_USB_MUSB_HOST
|
|
struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
|
|
#endif
|
|
|
|
if (!base)
|
|
return -EINVAL;
|
|
|
|
glue->cfg = (struct mtk_musb_config *)dev_get_driver_data(dev);
|
|
if (!glue->cfg)
|
|
return -EINVAL;
|
|
|
|
ret = clk_get_by_name(dev, "usbpll", &glue->usbpllclk);
|
|
if (ret) {
|
|
dev_err(dev, "failed to get usbpll clock\n");
|
|
return ret;
|
|
}
|
|
ret = clk_get_by_name(dev, "usbmcu", &glue->usbmcuclk);
|
|
if (ret) {
|
|
dev_err(dev, "failed to get usbmcu clock\n");
|
|
return ret;
|
|
}
|
|
ret = clk_get_by_name(dev, "usb", &glue->usbclk);
|
|
if (ret) {
|
|
dev_err(dev, "failed to get usb clock\n");
|
|
return ret;
|
|
}
|
|
|
|
memset(&pdata, 0, sizeof(pdata));
|
|
pdata.power = (u8)400;
|
|
pdata.platform_ops = &mtk_musb_ops;
|
|
pdata.config = glue->cfg->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;
|
|
|
|
ret = musb_lowlevel_init(host);
|
|
if (!ret)
|
|
printf("MTK MUSB OTG (Host)\n");
|
|
#else
|
|
pdata.mode = MUSB_PERIPHERAL;
|
|
host->host = musb_register(&pdata, &glue->dev, base);
|
|
if (!host->host)
|
|
return -EIO;
|
|
|
|
printf("MTK MUSB OTG (Peripheral)\n");
|
|
#endif
|
|
|
|
mt_usb_phy_poweron();
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int musb_usb_remove(struct udevice *dev)
|
|
{
|
|
struct mtk_musb_glue *glue = dev_get_priv(dev);
|
|
struct musb_host_data *host = &glue->mdata;
|
|
|
|
musb_stop(host->host);
|
|
free(host->host);
|
|
host->host = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct mtk_musb_config mt8518_cfg = {
|
|
.config = &musb_config,
|
|
};
|
|
|
|
static const struct udevice_id mtk_musb_ids[] = {
|
|
{ .compatible = "mediatek,mt8518-musb",
|
|
.data = (ulong)&mt8518_cfg },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(mtk_musb) = {
|
|
.name = "mtk_musb",
|
|
#ifdef CONFIG_USB_MUSB_HOST
|
|
.id = UCLASS_USB,
|
|
#else
|
|
.id = UCLASS_USB_GADGET_GENERIC,
|
|
#endif
|
|
.of_match = mtk_musb_ids,
|
|
.probe = musb_usb_probe,
|
|
.remove = musb_usb_remove,
|
|
#ifdef CONFIG_USB_MUSB_HOST
|
|
.ops = &musb_usb_ops,
|
|
#endif
|
|
.plat_auto = sizeof(struct usb_plat),
|
|
.priv_auto = sizeof(struct mtk_musb_glue),
|
|
};
|