mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2016 Rockchip Electronics Co., Ltd
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <linux/libfdt.h>
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#include "../gadget/dwc2_udc_otg_priv.h"
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DECLARE_GLOBAL_DATA_PTR;
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#define BIT_WRITEABLE_SHIFT 16
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struct usb2phy_reg {
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unsigned int offset;
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unsigned int bitend;
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unsigned int bitstart;
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unsigned int disable;
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unsigned int enable;
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};
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/**
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* struct rockchip_usb2_phy_cfg: usb-phy port configuration
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* @port_reset: usb otg per-port reset register
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* @soft_con: software control usb otg register
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* @suspend: phy suspend register
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*/
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struct rockchip_usb2_phy_cfg {
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struct usb2phy_reg port_reset;
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struct usb2phy_reg soft_con;
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struct usb2phy_reg suspend;
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};
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struct rockchip_usb2_phy_dt_id {
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char compatible[128];
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const void *data;
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};
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static const struct rockchip_usb2_phy_cfg rk3288_pdata = {
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.port_reset = {0x00, 12, 12, 0, 1},
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.soft_con = {0x08, 2, 2, 0, 1},
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.suspend = {0x0c, 5, 0, 0x01, 0x2A},
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};
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static struct rockchip_usb2_phy_dt_id rockchip_usb2_phy_dt_ids[] = {
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{ .compatible = "rockchip,rk3288-usb-phy", .data = &rk3288_pdata },
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{}
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};
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static void property_enable(struct dwc2_plat_otg_data *pdata,
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const struct usb2phy_reg *reg, bool en)
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{
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unsigned int val, mask, tmp;
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tmp = en ? reg->enable : reg->disable;
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mask = GENMASK(reg->bitend, reg->bitstart);
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val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT);
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writel(val, pdata->regs_phy + reg->offset);
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}
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void otg_phy_init(struct dwc2_udc *dev)
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{
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struct dwc2_plat_otg_data *pdata = dev->pdata;
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struct rockchip_usb2_phy_cfg *phy_cfg = NULL;
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struct rockchip_usb2_phy_dt_id *of_id;
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int i;
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for (i = 0; i < ARRAY_SIZE(rockchip_usb2_phy_dt_ids); i++) {
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of_id = &rockchip_usb2_phy_dt_ids[i];
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if (fdt_node_check_compatible(gd->fdt_blob, pdata->phy_of_node,
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of_id->compatible) == 0) {
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phy_cfg = (struct rockchip_usb2_phy_cfg *)of_id->data;
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break;
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}
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}
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if (!phy_cfg) {
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debug("Can't find device platform data\n");
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hang();
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return;
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}
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pdata->priv = phy_cfg;
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/* disable software control */
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property_enable(pdata, &phy_cfg->soft_con, false);
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/* reset otg port */
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property_enable(pdata, &phy_cfg->port_reset, true);
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mdelay(1);
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property_enable(pdata, &phy_cfg->port_reset, false);
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udelay(1);
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}
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void otg_phy_off(struct dwc2_udc *dev)
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{
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struct dwc2_plat_otg_data *pdata = dev->pdata;
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struct rockchip_usb2_phy_cfg *phy_cfg = pdata->priv;
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/* enable software control */
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property_enable(pdata, &phy_cfg->soft_con, true);
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/* enter suspend */
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property_enable(pdata, &phy_cfg->suspend, true);
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}
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