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![Felipe Balbi](/assets/img/avatar_default.png)
fix the following build warnings: drivers/usb/dwc3/core.c: In function ‘dwc3_uboot_init’: drivers/usb/dwc3/core.c:625:6: warning: ‘dev’ is used uninitialized in this function [-Wuninitialized] mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL); ^ drivers/usb/dwc3/dwc3-omap.c: In function ‘dwc3_omap_uboot_init’: drivers/usb/dwc3/dwc3-omap.c:380:7: warning: ‘dev’ is used uninitialized in this function [-Wuninitialized] omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL); Signed-off-by: Felipe Balbi <balbi@ti.com>
787 lines
19 KiB
C
787 lines
19 KiB
C
/**
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* core.c - DesignWare USB3 DRD Controller Core file
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*
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* Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com
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*
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* Authors: Felipe Balbi <balbi@ti.com>,
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* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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*
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* Taken from Linux Kernel v3.19-rc1 (drivers/usb/dwc3/core.c) and ported
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* to uboot.
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*
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* commit cd72f890d2 : usb: dwc3: core: enable phy suspend quirk on non-FPGA
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#include <common.h>
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#include <malloc.h>
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#include <dwc3-uboot.h>
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#include <asm/dma-mapping.h>
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#include <linux/ioport.h>
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#include <linux/usb/ch9.h>
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#include <linux/usb/gadget.h>
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#include "core.h"
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#include "gadget.h"
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#include "io.h"
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#include "linux-compat.h"
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static LIST_HEAD(dwc3_list);
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/* -------------------------------------------------------------------------- */
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static void dwc3_set_mode(struct dwc3 *dwc, u32 mode)
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{
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u32 reg;
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reg = dwc3_readl(dwc->regs, DWC3_GCTL);
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reg &= ~(DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG));
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reg |= DWC3_GCTL_PRTCAPDIR(mode);
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dwc3_writel(dwc->regs, DWC3_GCTL, reg);
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}
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/**
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* dwc3_core_soft_reset - Issues core soft reset and PHY reset
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* @dwc: pointer to our context structure
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*/
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static int dwc3_core_soft_reset(struct dwc3 *dwc)
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{
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u32 reg;
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/* Before Resetting PHY, put Core in Reset */
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reg = dwc3_readl(dwc->regs, DWC3_GCTL);
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reg |= DWC3_GCTL_CORESOFTRESET;
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dwc3_writel(dwc->regs, DWC3_GCTL, reg);
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/* Assert USB3 PHY reset */
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reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
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reg |= DWC3_GUSB3PIPECTL_PHYSOFTRST;
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dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
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/* Assert USB2 PHY reset */
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reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
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reg |= DWC3_GUSB2PHYCFG_PHYSOFTRST;
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dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
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mdelay(100);
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/* Clear USB3 PHY reset */
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reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
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reg &= ~DWC3_GUSB3PIPECTL_PHYSOFTRST;
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dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
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/* Clear USB2 PHY reset */
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reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
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reg &= ~DWC3_GUSB2PHYCFG_PHYSOFTRST;
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dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
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mdelay(100);
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/* After PHYs are stable we can take Core out of reset state */
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reg = dwc3_readl(dwc->regs, DWC3_GCTL);
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reg &= ~DWC3_GCTL_CORESOFTRESET;
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dwc3_writel(dwc->regs, DWC3_GCTL, reg);
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return 0;
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}
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/**
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* dwc3_free_one_event_buffer - Frees one event buffer
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* @dwc: Pointer to our controller context structure
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* @evt: Pointer to event buffer to be freed
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*/
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static void dwc3_free_one_event_buffer(struct dwc3 *dwc,
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struct dwc3_event_buffer *evt)
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{
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dma_free_coherent(evt->buf);
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}
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/**
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* dwc3_alloc_one_event_buffer - Allocates one event buffer structure
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* @dwc: Pointer to our controller context structure
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* @length: size of the event buffer
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*
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* Returns a pointer to the allocated event buffer structure on success
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* otherwise ERR_PTR(errno).
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*/
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static struct dwc3_event_buffer *dwc3_alloc_one_event_buffer(struct dwc3 *dwc,
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unsigned length)
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{
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struct dwc3_event_buffer *evt;
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evt = devm_kzalloc(dwc->dev, sizeof(*evt), GFP_KERNEL);
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if (!evt)
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return ERR_PTR(-ENOMEM);
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evt->dwc = dwc;
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evt->length = length;
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evt->buf = dma_alloc_coherent(length,
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(unsigned long *)&evt->dma);
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if (!evt->buf)
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return ERR_PTR(-ENOMEM);
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return evt;
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}
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/**
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* dwc3_free_event_buffers - frees all allocated event buffers
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* @dwc: Pointer to our controller context structure
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*/
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static void dwc3_free_event_buffers(struct dwc3 *dwc)
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{
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struct dwc3_event_buffer *evt;
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int i;
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for (i = 0; i < dwc->num_event_buffers; i++) {
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evt = dwc->ev_buffs[i];
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if (evt)
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dwc3_free_one_event_buffer(dwc, evt);
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}
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}
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/**
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* dwc3_alloc_event_buffers - Allocates @num event buffers of size @length
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* @dwc: pointer to our controller context structure
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* @length: size of event buffer
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*
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* Returns 0 on success otherwise negative errno. In the error case, dwc
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* may contain some buffers allocated but not all which were requested.
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*/
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static int dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length)
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{
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int num;
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int i;
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num = DWC3_NUM_INT(dwc->hwparams.hwparams1);
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dwc->num_event_buffers = num;
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dwc->ev_buffs = memalign(CONFIG_SYS_CACHELINE_SIZE,
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sizeof(*dwc->ev_buffs) * num);
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if (!dwc->ev_buffs)
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return -ENOMEM;
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for (i = 0; i < num; i++) {
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struct dwc3_event_buffer *evt;
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evt = dwc3_alloc_one_event_buffer(dwc, length);
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if (IS_ERR(evt)) {
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dev_err(dwc->dev, "can't allocate event buffer\n");
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return PTR_ERR(evt);
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}
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dwc->ev_buffs[i] = evt;
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}
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return 0;
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}
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/**
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* dwc3_event_buffers_setup - setup our allocated event buffers
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* @dwc: pointer to our controller context structure
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*
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* Returns 0 on success otherwise negative errno.
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*/
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static int dwc3_event_buffers_setup(struct dwc3 *dwc)
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{
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struct dwc3_event_buffer *evt;
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int n;
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for (n = 0; n < dwc->num_event_buffers; n++) {
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evt = dwc->ev_buffs[n];
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dev_dbg(dwc->dev, "Event buf %p dma %08llx length %d\n",
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evt->buf, (unsigned long long) evt->dma,
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evt->length);
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evt->lpos = 0;
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dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n),
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lower_32_bits(evt->dma));
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dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n),
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upper_32_bits(evt->dma));
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dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n),
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DWC3_GEVNTSIZ_SIZE(evt->length));
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dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0);
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}
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return 0;
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}
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static void dwc3_event_buffers_cleanup(struct dwc3 *dwc)
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{
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struct dwc3_event_buffer *evt;
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int n;
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for (n = 0; n < dwc->num_event_buffers; n++) {
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evt = dwc->ev_buffs[n];
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evt->lpos = 0;
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dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), 0);
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dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), 0);
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dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), DWC3_GEVNTSIZ_INTMASK
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| DWC3_GEVNTSIZ_SIZE(0));
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dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0);
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}
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}
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static int dwc3_alloc_scratch_buffers(struct dwc3 *dwc)
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{
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if (!dwc->has_hibernation)
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return 0;
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if (!dwc->nr_scratch)
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return 0;
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dwc->scratchbuf = kmalloc_array(dwc->nr_scratch,
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DWC3_SCRATCHBUF_SIZE, GFP_KERNEL);
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if (!dwc->scratchbuf)
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return -ENOMEM;
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return 0;
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}
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static int dwc3_setup_scratch_buffers(struct dwc3 *dwc)
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{
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dma_addr_t scratch_addr;
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u32 param;
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int ret;
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if (!dwc->has_hibernation)
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return 0;
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if (!dwc->nr_scratch)
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return 0;
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scratch_addr = dma_map_single(dwc->scratchbuf,
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dwc->nr_scratch * DWC3_SCRATCHBUF_SIZE,
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DMA_BIDIRECTIONAL);
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if (dma_mapping_error(dwc->dev, scratch_addr)) {
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dev_err(dwc->dev, "failed to map scratch buffer\n");
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ret = -EFAULT;
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goto err0;
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}
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dwc->scratch_addr = scratch_addr;
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param = lower_32_bits(scratch_addr);
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ret = dwc3_send_gadget_generic_command(dwc,
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DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO, param);
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if (ret < 0)
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goto err1;
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param = upper_32_bits(scratch_addr);
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ret = dwc3_send_gadget_generic_command(dwc,
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DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI, param);
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if (ret < 0)
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goto err1;
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return 0;
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err1:
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dma_unmap_single((void *)(uintptr_t)dwc->scratch_addr, dwc->nr_scratch *
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DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL);
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err0:
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return ret;
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}
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static void dwc3_free_scratch_buffers(struct dwc3 *dwc)
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{
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if (!dwc->has_hibernation)
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return;
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if (!dwc->nr_scratch)
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return;
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dma_unmap_single((void *)(uintptr_t)dwc->scratch_addr, dwc->nr_scratch *
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DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL);
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kfree(dwc->scratchbuf);
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}
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static void dwc3_core_num_eps(struct dwc3 *dwc)
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{
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struct dwc3_hwparams *parms = &dwc->hwparams;
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dwc->num_in_eps = DWC3_NUM_IN_EPS(parms);
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dwc->num_out_eps = DWC3_NUM_EPS(parms) - dwc->num_in_eps;
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dev_vdbg(dwc->dev, "found %d IN and %d OUT endpoints\n",
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dwc->num_in_eps, dwc->num_out_eps);
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}
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static void dwc3_cache_hwparams(struct dwc3 *dwc)
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{
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struct dwc3_hwparams *parms = &dwc->hwparams;
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parms->hwparams0 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS0);
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parms->hwparams1 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS1);
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parms->hwparams2 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS2);
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parms->hwparams3 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS3);
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parms->hwparams4 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS4);
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parms->hwparams5 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS5);
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parms->hwparams6 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS6);
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parms->hwparams7 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS7);
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parms->hwparams8 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS8);
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}
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/**
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* dwc3_phy_setup - Configure USB PHY Interface of DWC3 Core
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* @dwc: Pointer to our controller context structure
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*/
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static void dwc3_phy_setup(struct dwc3 *dwc)
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{
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u32 reg;
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reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
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/*
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* Above 1.94a, it is recommended to set DWC3_GUSB3PIPECTL_SUSPHY
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* to '0' during coreConsultant configuration. So default value
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* will be '0' when the core is reset. Application needs to set it
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* to '1' after the core initialization is completed.
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*/
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if (dwc->revision > DWC3_REVISION_194A)
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reg |= DWC3_GUSB3PIPECTL_SUSPHY;
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if (dwc->u2ss_inp3_quirk)
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reg |= DWC3_GUSB3PIPECTL_U2SSINP3OK;
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if (dwc->req_p1p2p3_quirk)
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reg |= DWC3_GUSB3PIPECTL_REQP1P2P3;
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if (dwc->del_p1p2p3_quirk)
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reg |= DWC3_GUSB3PIPECTL_DEP1P2P3_EN;
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if (dwc->del_phy_power_chg_quirk)
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reg |= DWC3_GUSB3PIPECTL_DEPOCHANGE;
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if (dwc->lfps_filter_quirk)
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reg |= DWC3_GUSB3PIPECTL_LFPSFILT;
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if (dwc->rx_detect_poll_quirk)
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reg |= DWC3_GUSB3PIPECTL_RX_DETOPOLL;
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if (dwc->tx_de_emphasis_quirk)
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reg |= DWC3_GUSB3PIPECTL_TX_DEEPH(dwc->tx_de_emphasis);
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if (dwc->dis_u3_susphy_quirk)
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reg &= ~DWC3_GUSB3PIPECTL_SUSPHY;
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dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
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mdelay(100);
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reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
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/*
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* Above 1.94a, it is recommended to set DWC3_GUSB2PHYCFG_SUSPHY to
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* '0' during coreConsultant configuration. So default value will
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* be '0' when the core is reset. Application needs to set it to
|
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* '1' after the core initialization is completed.
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*/
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if (dwc->revision > DWC3_REVISION_194A)
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reg |= DWC3_GUSB2PHYCFG_SUSPHY;
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|
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if (dwc->dis_u2_susphy_quirk)
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reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
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|
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dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
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|
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mdelay(100);
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}
|
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|
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/**
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* dwc3_core_init - Low-level initialization of DWC3 Core
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* @dwc: Pointer to our controller context structure
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*
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* Returns 0 on success otherwise negative errno.
|
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*/
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static int dwc3_core_init(struct dwc3 *dwc)
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{
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unsigned long timeout;
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u32 hwparams4 = dwc->hwparams.hwparams4;
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u32 reg;
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int ret;
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|
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reg = dwc3_readl(dwc->regs, DWC3_GSNPSID);
|
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/* This should read as U3 followed by revision number */
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if ((reg & DWC3_GSNPSID_MASK) != 0x55330000) {
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dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n");
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ret = -ENODEV;
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goto err0;
|
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}
|
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dwc->revision = reg;
|
|
|
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/* Handle USB2.0-only core configuration */
|
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if (DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) ==
|
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DWC3_GHWPARAMS3_SSPHY_IFC_DIS) {
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if (dwc->maximum_speed == USB_SPEED_SUPER)
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dwc->maximum_speed = USB_SPEED_HIGH;
|
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}
|
|
|
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/* issue device SoftReset too */
|
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timeout = 5000;
|
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dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_CSFTRST);
|
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while (timeout--) {
|
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reg = dwc3_readl(dwc->regs, DWC3_DCTL);
|
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if (!(reg & DWC3_DCTL_CSFTRST))
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break;
|
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};
|
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|
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if (!timeout) {
|
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dev_err(dwc->dev, "Reset Timed Out\n");
|
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ret = -ETIMEDOUT;
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goto err0;
|
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}
|
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|
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ret = dwc3_core_soft_reset(dwc);
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if (ret)
|
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goto err0;
|
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|
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reg = dwc3_readl(dwc->regs, DWC3_GCTL);
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reg &= ~DWC3_GCTL_SCALEDOWN_MASK;
|
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|
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switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) {
|
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case DWC3_GHWPARAMS1_EN_PWROPT_CLK:
|
|
/**
|
|
* WORKAROUND: DWC3 revisions between 2.10a and 2.50a have an
|
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* issue which would cause xHCI compliance tests to fail.
|
|
*
|
|
* Because of that we cannot enable clock gating on such
|
|
* configurations.
|
|
*
|
|
* Refers to:
|
|
*
|
|
* STAR#9000588375: Clock Gating, SOF Issues when ref_clk-Based
|
|
* SOF/ITP Mode Used
|
|
*/
|
|
if ((dwc->dr_mode == USB_DR_MODE_HOST ||
|
|
dwc->dr_mode == USB_DR_MODE_OTG) &&
|
|
(dwc->revision >= DWC3_REVISION_210A &&
|
|
dwc->revision <= DWC3_REVISION_250A))
|
|
reg |= DWC3_GCTL_DSBLCLKGTNG | DWC3_GCTL_SOFITPSYNC;
|
|
else
|
|
reg &= ~DWC3_GCTL_DSBLCLKGTNG;
|
|
break;
|
|
case DWC3_GHWPARAMS1_EN_PWROPT_HIB:
|
|
/* enable hibernation here */
|
|
dwc->nr_scratch = DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(hwparams4);
|
|
|
|
/*
|
|
* REVISIT Enabling this bit so that host-mode hibernation
|
|
* will work. Device-mode hibernation is not yet implemented.
|
|
*/
|
|
reg |= DWC3_GCTL_GBLHIBERNATIONEN;
|
|
break;
|
|
default:
|
|
dev_dbg(dwc->dev, "No power optimization available\n");
|
|
}
|
|
|
|
/* check if current dwc3 is on simulation board */
|
|
if (dwc->hwparams.hwparams6 & DWC3_GHWPARAMS6_EN_FPGA) {
|
|
dev_dbg(dwc->dev, "it is on FPGA board\n");
|
|
dwc->is_fpga = true;
|
|
}
|
|
|
|
if(dwc->disable_scramble_quirk && !dwc->is_fpga)
|
|
WARN(true,
|
|
"disable_scramble cannot be used on non-FPGA builds\n");
|
|
|
|
if (dwc->disable_scramble_quirk && dwc->is_fpga)
|
|
reg |= DWC3_GCTL_DISSCRAMBLE;
|
|
else
|
|
reg &= ~DWC3_GCTL_DISSCRAMBLE;
|
|
|
|
if (dwc->u2exit_lfps_quirk)
|
|
reg |= DWC3_GCTL_U2EXIT_LFPS;
|
|
|
|
/*
|
|
* WORKAROUND: DWC3 revisions <1.90a have a bug
|
|
* where the device can fail to connect at SuperSpeed
|
|
* and falls back to high-speed mode which causes
|
|
* the device to enter a Connect/Disconnect loop
|
|
*/
|
|
if (dwc->revision < DWC3_REVISION_190A)
|
|
reg |= DWC3_GCTL_U2RSTECN;
|
|
|
|
dwc3_core_num_eps(dwc);
|
|
|
|
dwc3_writel(dwc->regs, DWC3_GCTL, reg);
|
|
|
|
dwc3_phy_setup(dwc);
|
|
|
|
ret = dwc3_alloc_scratch_buffers(dwc);
|
|
if (ret)
|
|
goto err0;
|
|
|
|
ret = dwc3_setup_scratch_buffers(dwc);
|
|
if (ret)
|
|
goto err1;
|
|
|
|
return 0;
|
|
|
|
err1:
|
|
dwc3_free_scratch_buffers(dwc);
|
|
|
|
err0:
|
|
return ret;
|
|
}
|
|
|
|
static void dwc3_core_exit(struct dwc3 *dwc)
|
|
{
|
|
dwc3_free_scratch_buffers(dwc);
|
|
}
|
|
|
|
static int dwc3_core_init_mode(struct dwc3 *dwc)
|
|
{
|
|
int ret;
|
|
|
|
switch (dwc->dr_mode) {
|
|
case USB_DR_MODE_PERIPHERAL:
|
|
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
|
|
ret = dwc3_gadget_init(dwc);
|
|
if (ret) {
|
|
dev_err(dev, "failed to initialize gadget\n");
|
|
return ret;
|
|
}
|
|
break;
|
|
case USB_DR_MODE_HOST:
|
|
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST);
|
|
ret = dwc3_host_init(dwc);
|
|
if (ret) {
|
|
dev_err(dev, "failed to initialize host\n");
|
|
return ret;
|
|
}
|
|
break;
|
|
case USB_DR_MODE_OTG:
|
|
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG);
|
|
ret = dwc3_host_init(dwc);
|
|
if (ret) {
|
|
dev_err(dev, "failed to initialize host\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = dwc3_gadget_init(dwc);
|
|
if (ret) {
|
|
dev_err(dev, "failed to initialize gadget\n");
|
|
return ret;
|
|
}
|
|
break;
|
|
default:
|
|
dev_err(dev, "Unsupported mode of operation %d\n", dwc->dr_mode);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dwc3_core_exit_mode(struct dwc3 *dwc)
|
|
{
|
|
switch (dwc->dr_mode) {
|
|
case USB_DR_MODE_PERIPHERAL:
|
|
dwc3_gadget_exit(dwc);
|
|
break;
|
|
case USB_DR_MODE_HOST:
|
|
dwc3_host_exit(dwc);
|
|
break;
|
|
case USB_DR_MODE_OTG:
|
|
dwc3_host_exit(dwc);
|
|
dwc3_gadget_exit(dwc);
|
|
break;
|
|
default:
|
|
/* do nothing */
|
|
break;
|
|
}
|
|
}
|
|
|
|
#define DWC3_ALIGN_MASK (16 - 1)
|
|
|
|
/**
|
|
* dwc3_uboot_init - dwc3 core uboot initialization code
|
|
* @dwc3_dev: struct dwc3_device containing initialization data
|
|
*
|
|
* Entry point for dwc3 driver (equivalent to dwc3_probe in linux
|
|
* kernel driver). Pointer to dwc3_device should be passed containing
|
|
* base address and other initialization data. Returns '0' on success and
|
|
* a negative value on failure.
|
|
*
|
|
* Generally called from board_usb_init() implemented in board file.
|
|
*/
|
|
int dwc3_uboot_init(struct dwc3_device *dwc3_dev)
|
|
{
|
|
struct dwc3 *dwc;
|
|
struct device *dev = NULL;
|
|
u8 lpm_nyet_threshold;
|
|
u8 tx_de_emphasis;
|
|
u8 hird_threshold;
|
|
|
|
int ret;
|
|
|
|
void *mem;
|
|
|
|
mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
|
|
if (!mem)
|
|
return -ENOMEM;
|
|
|
|
dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1);
|
|
dwc->mem = mem;
|
|
|
|
dwc->regs = (void *)(uintptr_t)(dwc3_dev->base +
|
|
DWC3_GLOBALS_REGS_START);
|
|
|
|
/* default to highest possible threshold */
|
|
lpm_nyet_threshold = 0xff;
|
|
|
|
/* default to -3.5dB de-emphasis */
|
|
tx_de_emphasis = 1;
|
|
|
|
/*
|
|
* default to assert utmi_sleep_n and use maximum allowed HIRD
|
|
* threshold value of 0b1100
|
|
*/
|
|
hird_threshold = 12;
|
|
|
|
dwc->maximum_speed = dwc3_dev->maximum_speed;
|
|
dwc->has_lpm_erratum = dwc3_dev->has_lpm_erratum;
|
|
if (dwc3_dev->lpm_nyet_threshold)
|
|
lpm_nyet_threshold = dwc3_dev->lpm_nyet_threshold;
|
|
dwc->is_utmi_l1_suspend = dwc3_dev->is_utmi_l1_suspend;
|
|
if (dwc3_dev->hird_threshold)
|
|
hird_threshold = dwc3_dev->hird_threshold;
|
|
|
|
dwc->needs_fifo_resize = dwc3_dev->tx_fifo_resize;
|
|
dwc->dr_mode = dwc3_dev->dr_mode;
|
|
|
|
dwc->disable_scramble_quirk = dwc3_dev->disable_scramble_quirk;
|
|
dwc->u2exit_lfps_quirk = dwc3_dev->u2exit_lfps_quirk;
|
|
dwc->u2ss_inp3_quirk = dwc3_dev->u2ss_inp3_quirk;
|
|
dwc->req_p1p2p3_quirk = dwc3_dev->req_p1p2p3_quirk;
|
|
dwc->del_p1p2p3_quirk = dwc3_dev->del_p1p2p3_quirk;
|
|
dwc->del_phy_power_chg_quirk = dwc3_dev->del_phy_power_chg_quirk;
|
|
dwc->lfps_filter_quirk = dwc3_dev->lfps_filter_quirk;
|
|
dwc->rx_detect_poll_quirk = dwc3_dev->rx_detect_poll_quirk;
|
|
dwc->dis_u3_susphy_quirk = dwc3_dev->dis_u3_susphy_quirk;
|
|
dwc->dis_u2_susphy_quirk = dwc3_dev->dis_u2_susphy_quirk;
|
|
|
|
dwc->tx_de_emphasis_quirk = dwc3_dev->tx_de_emphasis_quirk;
|
|
if (dwc3_dev->tx_de_emphasis)
|
|
tx_de_emphasis = dwc3_dev->tx_de_emphasis;
|
|
|
|
/* default to superspeed if no maximum_speed passed */
|
|
if (dwc->maximum_speed == USB_SPEED_UNKNOWN)
|
|
dwc->maximum_speed = USB_SPEED_SUPER;
|
|
|
|
dwc->lpm_nyet_threshold = lpm_nyet_threshold;
|
|
dwc->tx_de_emphasis = tx_de_emphasis;
|
|
|
|
dwc->hird_threshold = hird_threshold
|
|
| (dwc->is_utmi_l1_suspend << 4);
|
|
|
|
dwc->index = dwc3_dev->index;
|
|
|
|
dwc3_cache_hwparams(dwc);
|
|
|
|
ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE);
|
|
if (ret) {
|
|
dev_err(dwc->dev, "failed to allocate event buffers\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (IS_ENABLED(CONFIG_USB_DWC3_HOST))
|
|
dwc->dr_mode = USB_DR_MODE_HOST;
|
|
else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET))
|
|
dwc->dr_mode = USB_DR_MODE_PERIPHERAL;
|
|
|
|
if (dwc->dr_mode == USB_DR_MODE_UNKNOWN)
|
|
dwc->dr_mode = USB_DR_MODE_OTG;
|
|
|
|
ret = dwc3_core_init(dwc);
|
|
if (ret) {
|
|
dev_err(dev, "failed to initialize core\n");
|
|
goto err0;
|
|
}
|
|
|
|
ret = dwc3_event_buffers_setup(dwc);
|
|
if (ret) {
|
|
dev_err(dwc->dev, "failed to setup event buffers\n");
|
|
goto err1;
|
|
}
|
|
|
|
ret = dwc3_core_init_mode(dwc);
|
|
if (ret)
|
|
goto err2;
|
|
|
|
list_add_tail(&dwc->list, &dwc3_list);
|
|
|
|
return 0;
|
|
|
|
err2:
|
|
dwc3_event_buffers_cleanup(dwc);
|
|
|
|
err1:
|
|
dwc3_core_exit(dwc);
|
|
|
|
err0:
|
|
dwc3_free_event_buffers(dwc);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* dwc3_uboot_exit - dwc3 core uboot cleanup code
|
|
* @index: index of this controller
|
|
*
|
|
* Performs cleanup of memory allocated in dwc3_uboot_init and other misc
|
|
* cleanups (equivalent to dwc3_remove in linux). index of _this_ controller
|
|
* should be passed and should match with the index passed in
|
|
* dwc3_device during init.
|
|
*
|
|
* Generally called from board file.
|
|
*/
|
|
void dwc3_uboot_exit(int index)
|
|
{
|
|
struct dwc3 *dwc;
|
|
|
|
list_for_each_entry(dwc, &dwc3_list, list) {
|
|
if (dwc->index != index)
|
|
continue;
|
|
|
|
dwc3_core_exit_mode(dwc);
|
|
dwc3_event_buffers_cleanup(dwc);
|
|
dwc3_free_event_buffers(dwc);
|
|
dwc3_core_exit(dwc);
|
|
list_del(&dwc->list);
|
|
kfree(dwc->mem);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* dwc3_uboot_handle_interrupt - handle dwc3 core interrupt
|
|
* @index: index of this controller
|
|
*
|
|
* Invokes dwc3 gadget interrupts.
|
|
*
|
|
* Generally called from board file.
|
|
*/
|
|
void dwc3_uboot_handle_interrupt(int index)
|
|
{
|
|
struct dwc3 *dwc = NULL;
|
|
|
|
list_for_each_entry(dwc, &dwc3_list, list) {
|
|
if (dwc->index != index)
|
|
continue;
|
|
|
|
dwc3_gadget_uboot_handle_interrupt(dwc);
|
|
break;
|
|
}
|
|
}
|
|
|
|
MODULE_ALIAS("platform:dwc3");
|
|
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver");
|