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33e8e61694
There are a number of DWC2 configuration options that are set in dwc2.h and referenced in dwc2.c only. Move these out of the CONFIG_DWC2 namespace and in to the DWC2 namespace. Note that hikey was defining an option that was already always enabled, so we can remove that hunk. Cc: Marek Vasut <marex@denx.de> Signed-off-by: Tom Rini <trini@konsulko.com>
1490 lines
37 KiB
C
1490 lines
37 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
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* Copyright (C) 2014 Marek Vasut <marex@denx.de>
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*/
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#include <common.h>
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#include <clk.h>
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#include <cpu_func.h>
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#include <dm.h>
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#include <errno.h>
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#include <generic-phy.h>
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#include <log.h>
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#include <malloc.h>
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#include <memalign.h>
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#include <phys2bus.h>
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#include <usb.h>
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#include <usbroothubdes.h>
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#include <wait_bit.h>
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#include <asm/cache.h>
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#include <asm/io.h>
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#include <dm/device_compat.h>
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#include <linux/delay.h>
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#include <linux/usb/otg.h>
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#include <power/regulator.h>
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#include <reset.h>
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#include "dwc2.h"
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/* Use only HC channel 0. */
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#define DWC2_HC_CHANNEL 0
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#define DWC2_STATUS_BUF_SIZE 64
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#define DWC2_DATA_BUF_SIZE (CONFIG_USB_DWC2_BUFFER_SIZE * 1024)
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#define MAX_DEVICE 16
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#define MAX_ENDPOINT 16
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struct dwc2_priv {
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#if CONFIG_IS_ENABLED(DM_USB)
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uint8_t aligned_buffer[DWC2_DATA_BUF_SIZE] __aligned(ARCH_DMA_MINALIGN);
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uint8_t status_buffer[DWC2_STATUS_BUF_SIZE] __aligned(ARCH_DMA_MINALIGN);
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#ifdef CONFIG_DM_REGULATOR
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struct udevice *vbus_supply;
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#endif
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struct phy phy;
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struct clk_bulk clks;
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#else
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uint8_t *aligned_buffer;
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uint8_t *status_buffer;
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#endif
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u8 in_data_toggle[MAX_DEVICE][MAX_ENDPOINT];
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u8 out_data_toggle[MAX_DEVICE][MAX_ENDPOINT];
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struct dwc2_core_regs *regs;
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int root_hub_devnum;
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bool ext_vbus;
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/*
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* The hnp/srp capability must be disabled if the platform
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* does't support hnp/srp. Otherwise the force mode can't work.
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*/
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bool hnp_srp_disable;
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bool oc_disable;
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struct reset_ctl_bulk resets;
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};
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#if !CONFIG_IS_ENABLED(DM_USB)
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/* We need cacheline-aligned buffers for DMA transfers and dcache support */
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DEFINE_ALIGN_BUFFER(uint8_t, aligned_buffer_addr, DWC2_DATA_BUF_SIZE,
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ARCH_DMA_MINALIGN);
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DEFINE_ALIGN_BUFFER(uint8_t, status_buffer_addr, DWC2_STATUS_BUF_SIZE,
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ARCH_DMA_MINALIGN);
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static struct dwc2_priv local;
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#endif
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/*
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* DWC2 IP interface
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*/
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/*
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* Initializes the FSLSPClkSel field of the HCFG register
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* depending on the PHY type.
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*/
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static void init_fslspclksel(struct dwc2_core_regs *regs)
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{
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uint32_t phyclk;
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#if (DWC2_PHY_TYPE == DWC2_PHY_TYPE_FS)
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phyclk = DWC2_HCFG_FSLSPCLKSEL_48_MHZ; /* Full speed PHY */
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#else
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/* High speed PHY running at full speed or high speed */
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phyclk = DWC2_HCFG_FSLSPCLKSEL_30_60_MHZ;
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#endif
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#ifdef DWC2_ULPI_FS_LS
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uint32_t hwcfg2 = readl(®s->ghwcfg2);
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uint32_t hval = (ghwcfg2 & DWC2_HWCFG2_HS_PHY_TYPE_MASK) >>
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DWC2_HWCFG2_HS_PHY_TYPE_OFFSET;
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uint32_t fval = (ghwcfg2 & DWC2_HWCFG2_FS_PHY_TYPE_MASK) >>
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DWC2_HWCFG2_FS_PHY_TYPE_OFFSET;
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if (hval == 2 && fval == 1)
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phyclk = DWC2_HCFG_FSLSPCLKSEL_48_MHZ; /* Full speed PHY */
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#endif
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clrsetbits_le32(®s->host_regs.hcfg,
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DWC2_HCFG_FSLSPCLKSEL_MASK,
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phyclk << DWC2_HCFG_FSLSPCLKSEL_OFFSET);
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}
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/*
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* Flush a Tx FIFO.
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*
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* @param regs Programming view of DWC_otg controller.
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* @param num Tx FIFO to flush.
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*/
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static void dwc_otg_flush_tx_fifo(struct udevice *dev,
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struct dwc2_core_regs *regs, const int num)
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{
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int ret;
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writel(DWC2_GRSTCTL_TXFFLSH | (num << DWC2_GRSTCTL_TXFNUM_OFFSET),
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®s->grstctl);
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ret = wait_for_bit_le32(®s->grstctl, DWC2_GRSTCTL_TXFFLSH,
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false, 1000, false);
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if (ret)
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dev_info(dev, "%s: Timeout!\n", __func__);
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/* Wait for 3 PHY Clocks */
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udelay(1);
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}
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/*
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* Flush Rx FIFO.
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*
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* @param regs Programming view of DWC_otg controller.
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*/
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static void dwc_otg_flush_rx_fifo(struct udevice *dev,
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struct dwc2_core_regs *regs)
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{
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int ret;
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writel(DWC2_GRSTCTL_RXFFLSH, ®s->grstctl);
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ret = wait_for_bit_le32(®s->grstctl, DWC2_GRSTCTL_RXFFLSH,
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false, 1000, false);
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if (ret)
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dev_info(dev, "%s: Timeout!\n", __func__);
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/* Wait for 3 PHY Clocks */
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udelay(1);
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}
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/*
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* Do core a soft reset of the core. Be careful with this because it
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* resets all the internal state machines of the core.
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*/
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static void dwc_otg_core_reset(struct udevice *dev,
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struct dwc2_core_regs *regs)
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{
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int ret;
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/* Wait for AHB master IDLE state. */
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ret = wait_for_bit_le32(®s->grstctl, DWC2_GRSTCTL_AHBIDLE,
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true, 1000, false);
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if (ret)
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dev_info(dev, "%s: Timeout!\n", __func__);
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/* Core Soft Reset */
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writel(DWC2_GRSTCTL_CSFTRST, ®s->grstctl);
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ret = wait_for_bit_le32(®s->grstctl, DWC2_GRSTCTL_CSFTRST,
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false, 1000, false);
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if (ret)
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dev_info(dev, "%s: Timeout!\n", __func__);
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/*
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* Wait for core to come out of reset.
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* NOTE: This long sleep is _very_ important, otherwise the core will
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* not stay in host mode after a connector ID change!
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*/
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mdelay(100);
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}
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#if CONFIG_IS_ENABLED(DM_USB) && defined(CONFIG_DM_REGULATOR)
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static int dwc_vbus_supply_init(struct udevice *dev)
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{
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struct dwc2_priv *priv = dev_get_priv(dev);
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int ret;
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ret = device_get_supply_regulator(dev, "vbus-supply",
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&priv->vbus_supply);
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if (ret) {
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debug("%s: No vbus supply\n", dev->name);
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return 0;
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}
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ret = regulator_set_enable(priv->vbus_supply, true);
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if (ret) {
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dev_err(dev, "Error enabling vbus supply\n");
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return ret;
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}
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return 0;
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}
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static int dwc_vbus_supply_exit(struct udevice *dev)
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{
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struct dwc2_priv *priv = dev_get_priv(dev);
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int ret;
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if (priv->vbus_supply) {
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ret = regulator_set_enable(priv->vbus_supply, false);
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if (ret) {
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dev_err(dev, "Error disabling vbus supply\n");
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return ret;
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}
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}
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return 0;
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}
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#else
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static int dwc_vbus_supply_init(struct udevice *dev)
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{
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return 0;
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}
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#if CONFIG_IS_ENABLED(DM_USB)
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static int dwc_vbus_supply_exit(struct udevice *dev)
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{
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return 0;
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}
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#endif
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#endif
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/*
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* This function initializes the DWC_otg controller registers for
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* host mode.
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*
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* This function flushes the Tx and Rx FIFOs and it flushes any entries in the
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* request queues. Host channels are reset to ensure that they are ready for
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* performing transfers.
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*
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* @param dev USB Device (NULL if driver model is not being used)
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* @param regs Programming view of DWC_otg controller
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*
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*/
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static void dwc_otg_core_host_init(struct udevice *dev,
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struct dwc2_core_regs *regs)
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{
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uint32_t nptxfifosize = 0;
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uint32_t ptxfifosize = 0;
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uint32_t hprt0 = 0;
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int i, ret, num_channels;
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/* Restart the Phy Clock */
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writel(0, ®s->pcgcctl);
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/* Initialize Host Configuration Register */
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init_fslspclksel(regs);
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#ifdef DWC2_DFLT_SPEED_FULL
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setbits_le32(®s->host_regs.hcfg, DWC2_HCFG_FSLSSUPP);
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#endif
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/* Configure data FIFO sizes */
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#ifdef DWC2_ENABLE_DYNAMIC_FIFO
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if (readl(®s->ghwcfg2) & DWC2_HWCFG2_DYNAMIC_FIFO) {
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/* Rx FIFO */
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writel(DWC2_HOST_RX_FIFO_SIZE, ®s->grxfsiz);
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/* Non-periodic Tx FIFO */
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nptxfifosize |= DWC2_HOST_NPERIO_TX_FIFO_SIZE <<
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DWC2_FIFOSIZE_DEPTH_OFFSET;
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nptxfifosize |= DWC2_HOST_RX_FIFO_SIZE <<
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DWC2_FIFOSIZE_STARTADDR_OFFSET;
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writel(nptxfifosize, ®s->gnptxfsiz);
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/* Periodic Tx FIFO */
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ptxfifosize |= DWC2_HOST_PERIO_TX_FIFO_SIZE <<
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DWC2_FIFOSIZE_DEPTH_OFFSET;
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ptxfifosize |= (DWC2_HOST_RX_FIFO_SIZE +
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DWC2_HOST_NPERIO_TX_FIFO_SIZE) <<
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DWC2_FIFOSIZE_STARTADDR_OFFSET;
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writel(ptxfifosize, ®s->hptxfsiz);
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}
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#endif
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/* Clear Host Set HNP Enable in the OTG Control Register */
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clrbits_le32(®s->gotgctl, DWC2_GOTGCTL_HSTSETHNPEN);
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/* Make sure the FIFOs are flushed. */
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dwc_otg_flush_tx_fifo(dev, regs, 0x10); /* All Tx FIFOs */
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dwc_otg_flush_rx_fifo(dev, regs);
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/* Flush out any leftover queued requests. */
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num_channels = readl(®s->ghwcfg2);
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num_channels &= DWC2_HWCFG2_NUM_HOST_CHAN_MASK;
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num_channels >>= DWC2_HWCFG2_NUM_HOST_CHAN_OFFSET;
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num_channels += 1;
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for (i = 0; i < num_channels; i++)
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clrsetbits_le32(®s->hc_regs[i].hcchar,
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DWC2_HCCHAR_CHEN | DWC2_HCCHAR_EPDIR,
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DWC2_HCCHAR_CHDIS);
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/* Halt all channels to put them into a known state. */
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for (i = 0; i < num_channels; i++) {
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clrsetbits_le32(®s->hc_regs[i].hcchar,
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DWC2_HCCHAR_EPDIR,
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DWC2_HCCHAR_CHEN | DWC2_HCCHAR_CHDIS);
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ret = wait_for_bit_le32(®s->hc_regs[i].hcchar,
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DWC2_HCCHAR_CHEN, false, 1000, false);
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if (ret)
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dev_info(dev, "%s: Timeout!\n", __func__);
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}
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/* Turn on the vbus power. */
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if (readl(®s->gintsts) & DWC2_GINTSTS_CURMODE_HOST) {
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hprt0 = readl(®s->hprt0);
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hprt0 &= ~(DWC2_HPRT0_PRTENA | DWC2_HPRT0_PRTCONNDET);
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hprt0 &= ~(DWC2_HPRT0_PRTENCHNG | DWC2_HPRT0_PRTOVRCURRCHNG);
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if (!(hprt0 & DWC2_HPRT0_PRTPWR)) {
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hprt0 |= DWC2_HPRT0_PRTPWR;
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writel(hprt0, ®s->hprt0);
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}
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}
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if (dev)
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dwc_vbus_supply_init(dev);
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}
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/*
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* This function initializes the DWC_otg controller registers and
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* prepares the core for device mode or host mode operation.
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*
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* @param regs Programming view of the DWC_otg controller
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*/
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static void dwc_otg_core_init(struct udevice *dev)
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{
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struct dwc2_priv *priv = dev_get_priv(dev);
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struct dwc2_core_regs *regs = priv->regs;
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uint32_t ahbcfg = 0;
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uint32_t usbcfg = 0;
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uint8_t brst_sz = DWC2_DMA_BURST_SIZE;
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/* Common Initialization */
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usbcfg = readl(®s->gusbcfg);
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/* Program the ULPI External VBUS bit if needed */
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if (priv->ext_vbus) {
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usbcfg |= DWC2_GUSBCFG_ULPI_EXT_VBUS_DRV;
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if (!priv->oc_disable) {
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usbcfg |= DWC2_GUSBCFG_ULPI_INT_VBUS_INDICATOR |
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DWC2_GUSBCFG_INDICATOR_PASSTHROUGH;
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}
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} else {
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usbcfg &= ~DWC2_GUSBCFG_ULPI_EXT_VBUS_DRV;
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}
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/* Set external TS Dline pulsing */
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#ifdef DWC2_TS_DLINE
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usbcfg |= DWC2_GUSBCFG_TERM_SEL_DL_PULSE;
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#else
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usbcfg &= ~DWC2_GUSBCFG_TERM_SEL_DL_PULSE;
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#endif
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writel(usbcfg, ®s->gusbcfg);
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/* Reset the Controller */
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dwc_otg_core_reset(dev, regs);
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/*
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* This programming sequence needs to happen in FS mode before
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* any other programming occurs
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*/
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#if defined(DWC2_DFLT_SPEED_FULL) && \
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(DWC2_PHY_TYPE == DWC2_PHY_TYPE_FS)
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/* If FS mode with FS PHY */
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setbits_le32(®s->gusbcfg, DWC2_GUSBCFG_PHYSEL);
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/* Reset after a PHY select */
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dwc_otg_core_reset(dev, regs);
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/*
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* Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS.
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* Also do this on HNP Dev/Host mode switches (done in dev_init
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* and host_init).
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*/
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if (readl(®s->gintsts) & DWC2_GINTSTS_CURMODE_HOST)
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init_fslspclksel(regs);
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#ifdef DWC2_I2C_ENABLE
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/* Program GUSBCFG.OtgUtmifsSel to I2C */
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setbits_le32(®s->gusbcfg, DWC2_GUSBCFG_OTGUTMIFSSEL);
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/* Program GI2CCTL.I2CEn */
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clrsetbits_le32(®s->gi2cctl, DWC2_GI2CCTL_I2CEN |
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DWC2_GI2CCTL_I2CDEVADDR_MASK,
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1 << DWC2_GI2CCTL_I2CDEVADDR_OFFSET);
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setbits_le32(®s->gi2cctl, DWC2_GI2CCTL_I2CEN);
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#endif
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#else
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/* High speed PHY. */
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/*
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* HS PHY parameters. These parameters are preserved during
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* soft reset so only program the first time. Do a soft reset
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* immediately after setting phyif.
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*/
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usbcfg &= ~(DWC2_GUSBCFG_ULPI_UTMI_SEL | DWC2_GUSBCFG_PHYIF);
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usbcfg |= DWC2_PHY_TYPE << DWC2_GUSBCFG_ULPI_UTMI_SEL_OFFSET;
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if (usbcfg & DWC2_GUSBCFG_ULPI_UTMI_SEL) { /* ULPI interface */
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#ifdef DWC2_PHY_ULPI_DDR
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usbcfg |= DWC2_GUSBCFG_DDRSEL;
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#else
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usbcfg &= ~DWC2_GUSBCFG_DDRSEL;
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#endif
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} else { /* UTMI+ interface */
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#if (DWC2_UTMI_WIDTH == 16)
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usbcfg |= DWC2_GUSBCFG_PHYIF;
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#endif
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}
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writel(usbcfg, ®s->gusbcfg);
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/* Reset after setting the PHY parameters */
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dwc_otg_core_reset(dev, regs);
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#endif
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usbcfg = readl(®s->gusbcfg);
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usbcfg &= ~(DWC2_GUSBCFG_ULPI_FSLS | DWC2_GUSBCFG_ULPI_CLK_SUS_M);
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#ifdef DWC2_ULPI_FS_LS
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uint32_t hwcfg2 = readl(®s->ghwcfg2);
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uint32_t hval = (ghwcfg2 & DWC2_HWCFG2_HS_PHY_TYPE_MASK) >>
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DWC2_HWCFG2_HS_PHY_TYPE_OFFSET;
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uint32_t fval = (ghwcfg2 & DWC2_HWCFG2_FS_PHY_TYPE_MASK) >>
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DWC2_HWCFG2_FS_PHY_TYPE_OFFSET;
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if (hval == 2 && fval == 1) {
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usbcfg |= DWC2_GUSBCFG_ULPI_FSLS;
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usbcfg |= DWC2_GUSBCFG_ULPI_CLK_SUS_M;
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}
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#endif
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if (priv->hnp_srp_disable)
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usbcfg |= DWC2_GUSBCFG_FORCEHOSTMODE;
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writel(usbcfg, ®s->gusbcfg);
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/* Program the GAHBCFG Register. */
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switch (readl(®s->ghwcfg2) & DWC2_HWCFG2_ARCHITECTURE_MASK) {
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case DWC2_HWCFG2_ARCHITECTURE_SLAVE_ONLY:
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break;
|
|
case DWC2_HWCFG2_ARCHITECTURE_EXT_DMA:
|
|
while (brst_sz > 1) {
|
|
ahbcfg |= ahbcfg + (1 << DWC2_GAHBCFG_HBURSTLEN_OFFSET);
|
|
ahbcfg &= DWC2_GAHBCFG_HBURSTLEN_MASK;
|
|
brst_sz >>= 1;
|
|
}
|
|
|
|
#ifdef DWC2_DMA_ENABLE
|
|
ahbcfg |= DWC2_GAHBCFG_DMAENABLE;
|
|
#endif
|
|
break;
|
|
|
|
case DWC2_HWCFG2_ARCHITECTURE_INT_DMA:
|
|
ahbcfg |= DWC2_GAHBCFG_HBURSTLEN_INCR4;
|
|
#ifdef DWC2_DMA_ENABLE
|
|
ahbcfg |= DWC2_GAHBCFG_DMAENABLE;
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
writel(ahbcfg, ®s->gahbcfg);
|
|
|
|
/* Program the capabilities in GUSBCFG Register */
|
|
usbcfg = 0;
|
|
|
|
if (!priv->hnp_srp_disable)
|
|
usbcfg |= DWC2_GUSBCFG_HNPCAP | DWC2_GUSBCFG_SRPCAP;
|
|
#ifdef DWC2_IC_USB_CAP
|
|
usbcfg |= DWC2_GUSBCFG_IC_USB_CAP;
|
|
#endif
|
|
|
|
setbits_le32(®s->gusbcfg, usbcfg);
|
|
}
|
|
|
|
/*
|
|
* Prepares a host channel for transferring packets to/from a specific
|
|
* endpoint. The HCCHARn register is set up with the characteristics specified
|
|
* in _hc. Host channel interrupts that may need to be serviced while this
|
|
* transfer is in progress are enabled.
|
|
*
|
|
* @param regs Programming view of DWC_otg controller
|
|
* @param hc Information needed to initialize the host channel
|
|
*/
|
|
static void dwc_otg_hc_init(struct dwc2_core_regs *regs, uint8_t hc_num,
|
|
struct usb_device *dev, uint8_t dev_addr, uint8_t ep_num,
|
|
uint8_t ep_is_in, uint8_t ep_type, uint16_t max_packet)
|
|
{
|
|
struct dwc2_hc_regs *hc_regs = ®s->hc_regs[hc_num];
|
|
uint32_t hcchar = (dev_addr << DWC2_HCCHAR_DEVADDR_OFFSET) |
|
|
(ep_num << DWC2_HCCHAR_EPNUM_OFFSET) |
|
|
(ep_is_in << DWC2_HCCHAR_EPDIR_OFFSET) |
|
|
(ep_type << DWC2_HCCHAR_EPTYPE_OFFSET) |
|
|
(max_packet << DWC2_HCCHAR_MPS_OFFSET);
|
|
|
|
if (dev->speed == USB_SPEED_LOW)
|
|
hcchar |= DWC2_HCCHAR_LSPDDEV;
|
|
|
|
/*
|
|
* Program the HCCHARn register with the endpoint characteristics
|
|
* for the current transfer.
|
|
*/
|
|
writel(hcchar, &hc_regs->hcchar);
|
|
|
|
/* Program the HCSPLIT register, default to no SPLIT */
|
|
writel(0, &hc_regs->hcsplt);
|
|
}
|
|
|
|
static void dwc_otg_hc_init_split(struct dwc2_hc_regs *hc_regs,
|
|
uint8_t hub_devnum, uint8_t hub_port)
|
|
{
|
|
uint32_t hcsplt = 0;
|
|
|
|
hcsplt = DWC2_HCSPLT_SPLTENA;
|
|
hcsplt |= hub_devnum << DWC2_HCSPLT_HUBADDR_OFFSET;
|
|
hcsplt |= hub_port << DWC2_HCSPLT_PRTADDR_OFFSET;
|
|
|
|
/* Program the HCSPLIT register for SPLITs */
|
|
writel(hcsplt, &hc_regs->hcsplt);
|
|
}
|
|
|
|
/*
|
|
* DWC2 to USB API interface
|
|
*/
|
|
/* Direction: In ; Request: Status */
|
|
static int dwc_otg_submit_rh_msg_in_status(struct dwc2_core_regs *regs,
|
|
struct usb_device *dev, void *buffer,
|
|
int txlen, struct devrequest *cmd)
|
|
{
|
|
uint32_t hprt0 = 0;
|
|
uint32_t port_status = 0;
|
|
uint32_t port_change = 0;
|
|
int len = 0;
|
|
int stat = 0;
|
|
|
|
switch (cmd->requesttype & ~USB_DIR_IN) {
|
|
case 0:
|
|
*(uint16_t *)buffer = cpu_to_le16(1);
|
|
len = 2;
|
|
break;
|
|
case USB_RECIP_INTERFACE:
|
|
case USB_RECIP_ENDPOINT:
|
|
*(uint16_t *)buffer = cpu_to_le16(0);
|
|
len = 2;
|
|
break;
|
|
case USB_TYPE_CLASS:
|
|
*(uint32_t *)buffer = cpu_to_le32(0);
|
|
len = 4;
|
|
break;
|
|
case USB_RECIP_OTHER | USB_TYPE_CLASS:
|
|
hprt0 = readl(®s->hprt0);
|
|
if (hprt0 & DWC2_HPRT0_PRTCONNSTS)
|
|
port_status |= USB_PORT_STAT_CONNECTION;
|
|
if (hprt0 & DWC2_HPRT0_PRTENA)
|
|
port_status |= USB_PORT_STAT_ENABLE;
|
|
if (hprt0 & DWC2_HPRT0_PRTSUSP)
|
|
port_status |= USB_PORT_STAT_SUSPEND;
|
|
if (hprt0 & DWC2_HPRT0_PRTOVRCURRACT)
|
|
port_status |= USB_PORT_STAT_OVERCURRENT;
|
|
if (hprt0 & DWC2_HPRT0_PRTRST)
|
|
port_status |= USB_PORT_STAT_RESET;
|
|
if (hprt0 & DWC2_HPRT0_PRTPWR)
|
|
port_status |= USB_PORT_STAT_POWER;
|
|
|
|
if ((hprt0 & DWC2_HPRT0_PRTSPD_MASK) == DWC2_HPRT0_PRTSPD_LOW)
|
|
port_status |= USB_PORT_STAT_LOW_SPEED;
|
|
else if ((hprt0 & DWC2_HPRT0_PRTSPD_MASK) ==
|
|
DWC2_HPRT0_PRTSPD_HIGH)
|
|
port_status |= USB_PORT_STAT_HIGH_SPEED;
|
|
|
|
if (hprt0 & DWC2_HPRT0_PRTENCHNG)
|
|
port_change |= USB_PORT_STAT_C_ENABLE;
|
|
if (hprt0 & DWC2_HPRT0_PRTCONNDET)
|
|
port_change |= USB_PORT_STAT_C_CONNECTION;
|
|
if (hprt0 & DWC2_HPRT0_PRTOVRCURRCHNG)
|
|
port_change |= USB_PORT_STAT_C_OVERCURRENT;
|
|
|
|
*(uint32_t *)buffer = cpu_to_le32(port_status |
|
|
(port_change << 16));
|
|
len = 4;
|
|
break;
|
|
default:
|
|
puts("unsupported root hub command\n");
|
|
stat = USB_ST_STALLED;
|
|
}
|
|
|
|
dev->act_len = min(len, txlen);
|
|
dev->status = stat;
|
|
|
|
return stat;
|
|
}
|
|
|
|
/* Direction: In ; Request: Descriptor */
|
|
static int dwc_otg_submit_rh_msg_in_descriptor(struct usb_device *dev,
|
|
void *buffer, int txlen,
|
|
struct devrequest *cmd)
|
|
{
|
|
unsigned char data[32];
|
|
uint32_t dsc;
|
|
int len = 0;
|
|
int stat = 0;
|
|
uint16_t wValue = cpu_to_le16(cmd->value);
|
|
uint16_t wLength = cpu_to_le16(cmd->length);
|
|
|
|
switch (cmd->requesttype & ~USB_DIR_IN) {
|
|
case 0:
|
|
switch (wValue & 0xff00) {
|
|
case 0x0100: /* device descriptor */
|
|
len = min3(txlen, (int)sizeof(root_hub_dev_des), (int)wLength);
|
|
memcpy(buffer, root_hub_dev_des, len);
|
|
break;
|
|
case 0x0200: /* configuration descriptor */
|
|
len = min3(txlen, (int)sizeof(root_hub_config_des), (int)wLength);
|
|
memcpy(buffer, root_hub_config_des, len);
|
|
break;
|
|
case 0x0300: /* string descriptors */
|
|
switch (wValue & 0xff) {
|
|
case 0x00:
|
|
len = min3(txlen, (int)sizeof(root_hub_str_index0),
|
|
(int)wLength);
|
|
memcpy(buffer, root_hub_str_index0, len);
|
|
break;
|
|
case 0x01:
|
|
len = min3(txlen, (int)sizeof(root_hub_str_index1),
|
|
(int)wLength);
|
|
memcpy(buffer, root_hub_str_index1, len);
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
stat = USB_ST_STALLED;
|
|
}
|
|
break;
|
|
|
|
case USB_TYPE_CLASS:
|
|
/* Root port config, set 1 port and nothing else. */
|
|
dsc = 0x00000001;
|
|
|
|
data[0] = 9; /* min length; */
|
|
data[1] = 0x29;
|
|
data[2] = dsc & RH_A_NDP;
|
|
data[3] = 0;
|
|
if (dsc & RH_A_PSM)
|
|
data[3] |= 0x1;
|
|
if (dsc & RH_A_NOCP)
|
|
data[3] |= 0x10;
|
|
else if (dsc & RH_A_OCPM)
|
|
data[3] |= 0x8;
|
|
|
|
/* corresponds to data[4-7] */
|
|
data[5] = (dsc & RH_A_POTPGT) >> 24;
|
|
data[7] = dsc & RH_B_DR;
|
|
if (data[2] < 7) {
|
|
data[8] = 0xff;
|
|
} else {
|
|
data[0] += 2;
|
|
data[8] = (dsc & RH_B_DR) >> 8;
|
|
data[9] = 0xff;
|
|
data[10] = data[9];
|
|
}
|
|
|
|
len = min3(txlen, (int)data[0], (int)wLength);
|
|
memcpy(buffer, data, len);
|
|
break;
|
|
default:
|
|
puts("unsupported root hub command\n");
|
|
stat = USB_ST_STALLED;
|
|
}
|
|
|
|
dev->act_len = min(len, txlen);
|
|
dev->status = stat;
|
|
|
|
return stat;
|
|
}
|
|
|
|
/* Direction: In ; Request: Configuration */
|
|
static int dwc_otg_submit_rh_msg_in_configuration(struct usb_device *dev,
|
|
void *buffer, int txlen,
|
|
struct devrequest *cmd)
|
|
{
|
|
int len = 0;
|
|
int stat = 0;
|
|
|
|
switch (cmd->requesttype & ~USB_DIR_IN) {
|
|
case 0:
|
|
*(uint8_t *)buffer = 0x01;
|
|
len = 1;
|
|
break;
|
|
default:
|
|
puts("unsupported root hub command\n");
|
|
stat = USB_ST_STALLED;
|
|
}
|
|
|
|
dev->act_len = min(len, txlen);
|
|
dev->status = stat;
|
|
|
|
return stat;
|
|
}
|
|
|
|
/* Direction: In */
|
|
static int dwc_otg_submit_rh_msg_in(struct dwc2_priv *priv,
|
|
struct usb_device *dev, void *buffer,
|
|
int txlen, struct devrequest *cmd)
|
|
{
|
|
switch (cmd->request) {
|
|
case USB_REQ_GET_STATUS:
|
|
return dwc_otg_submit_rh_msg_in_status(priv->regs, dev, buffer,
|
|
txlen, cmd);
|
|
case USB_REQ_GET_DESCRIPTOR:
|
|
return dwc_otg_submit_rh_msg_in_descriptor(dev, buffer,
|
|
txlen, cmd);
|
|
case USB_REQ_GET_CONFIGURATION:
|
|
return dwc_otg_submit_rh_msg_in_configuration(dev, buffer,
|
|
txlen, cmd);
|
|
default:
|
|
puts("unsupported root hub command\n");
|
|
return USB_ST_STALLED;
|
|
}
|
|
}
|
|
|
|
/* Direction: Out */
|
|
static int dwc_otg_submit_rh_msg_out(struct dwc2_priv *priv,
|
|
struct usb_device *dev,
|
|
void *buffer, int txlen,
|
|
struct devrequest *cmd)
|
|
{
|
|
struct dwc2_core_regs *regs = priv->regs;
|
|
int len = 0;
|
|
int stat = 0;
|
|
uint16_t bmrtype_breq = cmd->requesttype | (cmd->request << 8);
|
|
uint16_t wValue = cpu_to_le16(cmd->value);
|
|
|
|
switch (bmrtype_breq & ~USB_DIR_IN) {
|
|
case (USB_REQ_CLEAR_FEATURE << 8) | USB_RECIP_ENDPOINT:
|
|
case (USB_REQ_CLEAR_FEATURE << 8) | USB_TYPE_CLASS:
|
|
break;
|
|
|
|
case (USB_REQ_CLEAR_FEATURE << 8) | USB_RECIP_OTHER | USB_TYPE_CLASS:
|
|
switch (wValue) {
|
|
case USB_PORT_FEAT_C_CONNECTION:
|
|
setbits_le32(®s->hprt0, DWC2_HPRT0_PRTCONNDET);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case (USB_REQ_SET_FEATURE << 8) | USB_RECIP_OTHER | USB_TYPE_CLASS:
|
|
switch (wValue) {
|
|
case USB_PORT_FEAT_SUSPEND:
|
|
break;
|
|
|
|
case USB_PORT_FEAT_RESET:
|
|
clrsetbits_le32(®s->hprt0, DWC2_HPRT0_PRTENA |
|
|
DWC2_HPRT0_PRTCONNDET |
|
|
DWC2_HPRT0_PRTENCHNG |
|
|
DWC2_HPRT0_PRTOVRCURRCHNG,
|
|
DWC2_HPRT0_PRTRST);
|
|
mdelay(50);
|
|
clrbits_le32(®s->hprt0, DWC2_HPRT0_PRTRST);
|
|
break;
|
|
|
|
case USB_PORT_FEAT_POWER:
|
|
clrsetbits_le32(®s->hprt0, DWC2_HPRT0_PRTENA |
|
|
DWC2_HPRT0_PRTCONNDET |
|
|
DWC2_HPRT0_PRTENCHNG |
|
|
DWC2_HPRT0_PRTOVRCURRCHNG,
|
|
DWC2_HPRT0_PRTRST);
|
|
break;
|
|
|
|
case USB_PORT_FEAT_ENABLE:
|
|
break;
|
|
}
|
|
break;
|
|
case (USB_REQ_SET_ADDRESS << 8):
|
|
priv->root_hub_devnum = wValue;
|
|
break;
|
|
case (USB_REQ_SET_CONFIGURATION << 8):
|
|
break;
|
|
default:
|
|
puts("unsupported root hub command\n");
|
|
stat = USB_ST_STALLED;
|
|
}
|
|
|
|
len = min(len, txlen);
|
|
|
|
dev->act_len = len;
|
|
dev->status = stat;
|
|
|
|
return stat;
|
|
}
|
|
|
|
static int dwc_otg_submit_rh_msg(struct dwc2_priv *priv, struct usb_device *dev,
|
|
unsigned long pipe, void *buffer, int txlen,
|
|
struct devrequest *cmd)
|
|
{
|
|
int stat = 0;
|
|
|
|
if (usb_pipeint(pipe)) {
|
|
puts("Root-Hub submit IRQ: NOT implemented\n");
|
|
return 0;
|
|
}
|
|
|
|
if (cmd->requesttype & USB_DIR_IN)
|
|
stat = dwc_otg_submit_rh_msg_in(priv, dev, buffer, txlen, cmd);
|
|
else
|
|
stat = dwc_otg_submit_rh_msg_out(priv, dev, buffer, txlen, cmd);
|
|
|
|
mdelay(1);
|
|
|
|
return stat;
|
|
}
|
|
|
|
int wait_for_chhltd(struct dwc2_hc_regs *hc_regs, uint32_t *sub, u8 *toggle)
|
|
{
|
|
int ret;
|
|
uint32_t hcint, hctsiz;
|
|
|
|
ret = wait_for_bit_le32(&hc_regs->hcint, DWC2_HCINT_CHHLTD, true,
|
|
2000, false);
|
|
if (ret)
|
|
return ret;
|
|
|
|
hcint = readl(&hc_regs->hcint);
|
|
hctsiz = readl(&hc_regs->hctsiz);
|
|
*sub = (hctsiz & DWC2_HCTSIZ_XFERSIZE_MASK) >>
|
|
DWC2_HCTSIZ_XFERSIZE_OFFSET;
|
|
*toggle = (hctsiz & DWC2_HCTSIZ_PID_MASK) >> DWC2_HCTSIZ_PID_OFFSET;
|
|
|
|
debug("%s: HCINT=%08x sub=%u toggle=%d\n", __func__, hcint, *sub,
|
|
*toggle);
|
|
|
|
if (hcint & DWC2_HCINT_XFERCOMP)
|
|
return 0;
|
|
|
|
if (hcint & (DWC2_HCINT_NAK | DWC2_HCINT_FRMOVRUN))
|
|
return -EAGAIN;
|
|
|
|
debug("%s: Error (HCINT=%08x)\n", __func__, hcint);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int dwc2_eptype[] = {
|
|
DWC2_HCCHAR_EPTYPE_ISOC,
|
|
DWC2_HCCHAR_EPTYPE_INTR,
|
|
DWC2_HCCHAR_EPTYPE_CONTROL,
|
|
DWC2_HCCHAR_EPTYPE_BULK,
|
|
};
|
|
|
|
static int transfer_chunk(struct dwc2_hc_regs *hc_regs, void *aligned_buffer,
|
|
u8 *pid, int in, void *buffer, int num_packets,
|
|
int xfer_len, int *actual_len, int odd_frame)
|
|
{
|
|
int ret = 0;
|
|
uint32_t sub;
|
|
|
|
debug("%s: chunk: pid %d xfer_len %u pkts %u\n", __func__,
|
|
*pid, xfer_len, num_packets);
|
|
|
|
writel((xfer_len << DWC2_HCTSIZ_XFERSIZE_OFFSET) |
|
|
(num_packets << DWC2_HCTSIZ_PKTCNT_OFFSET) |
|
|
(*pid << DWC2_HCTSIZ_PID_OFFSET),
|
|
&hc_regs->hctsiz);
|
|
|
|
if (xfer_len) {
|
|
if (in) {
|
|
invalidate_dcache_range(
|
|
(uintptr_t)aligned_buffer,
|
|
(uintptr_t)aligned_buffer +
|
|
roundup(xfer_len, ARCH_DMA_MINALIGN));
|
|
} else {
|
|
memcpy(aligned_buffer, buffer, xfer_len);
|
|
flush_dcache_range(
|
|
(uintptr_t)aligned_buffer,
|
|
(uintptr_t)aligned_buffer +
|
|
roundup(xfer_len, ARCH_DMA_MINALIGN));
|
|
}
|
|
}
|
|
|
|
writel(phys_to_bus((unsigned long)aligned_buffer), &hc_regs->hcdma);
|
|
|
|
/* Clear old interrupt conditions for this host channel. */
|
|
writel(0x3fff, &hc_regs->hcint);
|
|
|
|
/* Set host channel enable after all other setup is complete. */
|
|
clrsetbits_le32(&hc_regs->hcchar, DWC2_HCCHAR_MULTICNT_MASK |
|
|
DWC2_HCCHAR_CHEN | DWC2_HCCHAR_CHDIS |
|
|
DWC2_HCCHAR_ODDFRM,
|
|
(1 << DWC2_HCCHAR_MULTICNT_OFFSET) |
|
|
(odd_frame << DWC2_HCCHAR_ODDFRM_OFFSET) |
|
|
DWC2_HCCHAR_CHEN);
|
|
|
|
ret = wait_for_chhltd(hc_regs, &sub, pid);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (in) {
|
|
xfer_len -= sub;
|
|
|
|
invalidate_dcache_range((unsigned long)aligned_buffer,
|
|
(unsigned long)aligned_buffer +
|
|
roundup(xfer_len, ARCH_DMA_MINALIGN));
|
|
|
|
memcpy(buffer, aligned_buffer, xfer_len);
|
|
}
|
|
*actual_len = xfer_len;
|
|
|
|
return ret;
|
|
}
|
|
|
|
int chunk_msg(struct dwc2_priv *priv, struct usb_device *dev,
|
|
unsigned long pipe, u8 *pid, int in, void *buffer, int len)
|
|
{
|
|
struct dwc2_core_regs *regs = priv->regs;
|
|
struct dwc2_hc_regs *hc_regs = ®s->hc_regs[DWC2_HC_CHANNEL];
|
|
struct dwc2_host_regs *host_regs = ®s->host_regs;
|
|
int devnum = usb_pipedevice(pipe);
|
|
int ep = usb_pipeendpoint(pipe);
|
|
int max = usb_maxpacket(dev, pipe);
|
|
int eptype = dwc2_eptype[usb_pipetype(pipe)];
|
|
int done = 0;
|
|
int ret = 0;
|
|
int do_split = 0;
|
|
int complete_split = 0;
|
|
uint32_t xfer_len;
|
|
uint32_t num_packets;
|
|
int stop_transfer = 0;
|
|
uint32_t max_xfer_len;
|
|
int ssplit_frame_num = 0;
|
|
|
|
debug("%s: msg: pipe %lx pid %d in %d len %d\n", __func__, pipe, *pid,
|
|
in, len);
|
|
|
|
max_xfer_len = DWC2_MAX_PACKET_COUNT * max;
|
|
if (max_xfer_len > DWC2_MAX_TRANSFER_SIZE)
|
|
max_xfer_len = DWC2_MAX_TRANSFER_SIZE;
|
|
if (max_xfer_len > DWC2_DATA_BUF_SIZE)
|
|
max_xfer_len = DWC2_DATA_BUF_SIZE;
|
|
|
|
/* Make sure that max_xfer_len is a multiple of max packet size. */
|
|
num_packets = max_xfer_len / max;
|
|
max_xfer_len = num_packets * max;
|
|
|
|
/* Initialize channel */
|
|
dwc_otg_hc_init(regs, DWC2_HC_CHANNEL, dev, devnum, ep, in,
|
|
eptype, max);
|
|
|
|
/* Check if the target is a FS/LS device behind a HS hub */
|
|
if (dev->speed != USB_SPEED_HIGH) {
|
|
uint8_t hub_addr;
|
|
uint8_t hub_port;
|
|
uint32_t hprt0 = readl(®s->hprt0);
|
|
if ((hprt0 & DWC2_HPRT0_PRTSPD_MASK) ==
|
|
DWC2_HPRT0_PRTSPD_HIGH) {
|
|
usb_find_usb2_hub_address_port(dev, &hub_addr,
|
|
&hub_port);
|
|
dwc_otg_hc_init_split(hc_regs, hub_addr, hub_port);
|
|
|
|
do_split = 1;
|
|
num_packets = 1;
|
|
max_xfer_len = max;
|
|
}
|
|
}
|
|
|
|
do {
|
|
int actual_len = 0;
|
|
uint32_t hcint;
|
|
int odd_frame = 0;
|
|
xfer_len = len - done;
|
|
|
|
if (xfer_len > max_xfer_len)
|
|
xfer_len = max_xfer_len;
|
|
else if (xfer_len > max)
|
|
num_packets = (xfer_len + max - 1) / max;
|
|
else
|
|
num_packets = 1;
|
|
|
|
if (complete_split)
|
|
setbits_le32(&hc_regs->hcsplt, DWC2_HCSPLT_COMPSPLT);
|
|
else if (do_split)
|
|
clrbits_le32(&hc_regs->hcsplt, DWC2_HCSPLT_COMPSPLT);
|
|
|
|
if (eptype == DWC2_HCCHAR_EPTYPE_INTR) {
|
|
int uframe_num = readl(&host_regs->hfnum);
|
|
if (!(uframe_num & 0x1))
|
|
odd_frame = 1;
|
|
}
|
|
|
|
ret = transfer_chunk(hc_regs, priv->aligned_buffer, pid,
|
|
in, (char *)buffer + done, num_packets,
|
|
xfer_len, &actual_len, odd_frame);
|
|
|
|
hcint = readl(&hc_regs->hcint);
|
|
if (complete_split) {
|
|
stop_transfer = 0;
|
|
if (hcint & DWC2_HCINT_NYET) {
|
|
ret = 0;
|
|
int frame_num = DWC2_HFNUM_MAX_FRNUM &
|
|
readl(&host_regs->hfnum);
|
|
if (((frame_num - ssplit_frame_num) &
|
|
DWC2_HFNUM_MAX_FRNUM) > 4)
|
|
ret = -EAGAIN;
|
|
} else
|
|
complete_split = 0;
|
|
} else if (do_split) {
|
|
if (hcint & DWC2_HCINT_ACK) {
|
|
ssplit_frame_num = DWC2_HFNUM_MAX_FRNUM &
|
|
readl(&host_regs->hfnum);
|
|
ret = 0;
|
|
complete_split = 1;
|
|
}
|
|
}
|
|
|
|
if (ret)
|
|
break;
|
|
|
|
if (actual_len < xfer_len)
|
|
stop_transfer = 1;
|
|
|
|
done += actual_len;
|
|
|
|
/* Transactions are done when when either all data is transferred or
|
|
* there is a short transfer. In case of a SPLIT make sure the CSPLIT
|
|
* is executed.
|
|
*/
|
|
} while (((done < len) && !stop_transfer) || complete_split);
|
|
|
|
writel(0, &hc_regs->hcintmsk);
|
|
writel(0xFFFFFFFF, &hc_regs->hcint);
|
|
|
|
dev->status = 0;
|
|
dev->act_len = done;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* U-Boot USB transmission interface */
|
|
int _submit_bulk_msg(struct dwc2_priv *priv, struct usb_device *dev,
|
|
unsigned long pipe, void *buffer, int len)
|
|
{
|
|
int devnum = usb_pipedevice(pipe);
|
|
int ep = usb_pipeendpoint(pipe);
|
|
u8* pid;
|
|
|
|
if ((devnum >= MAX_DEVICE) || (devnum == priv->root_hub_devnum)) {
|
|
dev->status = 0;
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (usb_pipein(pipe))
|
|
pid = &priv->in_data_toggle[devnum][ep];
|
|
else
|
|
pid = &priv->out_data_toggle[devnum][ep];
|
|
|
|
return chunk_msg(priv, dev, pipe, pid, usb_pipein(pipe), buffer, len);
|
|
}
|
|
|
|
static int _submit_control_msg(struct dwc2_priv *priv, struct usb_device *dev,
|
|
unsigned long pipe, void *buffer, int len,
|
|
struct devrequest *setup)
|
|
{
|
|
int devnum = usb_pipedevice(pipe);
|
|
int ret, act_len;
|
|
u8 pid;
|
|
/* For CONTROL endpoint pid should start with DATA1 */
|
|
int status_direction;
|
|
|
|
if (devnum == priv->root_hub_devnum) {
|
|
dev->status = 0;
|
|
dev->speed = USB_SPEED_HIGH;
|
|
return dwc_otg_submit_rh_msg(priv, dev, pipe, buffer, len,
|
|
setup);
|
|
}
|
|
|
|
/* SETUP stage */
|
|
pid = DWC2_HC_PID_SETUP;
|
|
do {
|
|
ret = chunk_msg(priv, dev, pipe, &pid, 0, setup, 8);
|
|
} while (ret == -EAGAIN);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* DATA stage */
|
|
act_len = 0;
|
|
if (buffer) {
|
|
pid = DWC2_HC_PID_DATA1;
|
|
do {
|
|
ret = chunk_msg(priv, dev, pipe, &pid, usb_pipein(pipe),
|
|
buffer, len);
|
|
act_len += dev->act_len;
|
|
buffer += dev->act_len;
|
|
len -= dev->act_len;
|
|
} while (ret == -EAGAIN);
|
|
if (ret)
|
|
return ret;
|
|
status_direction = usb_pipeout(pipe);
|
|
} else {
|
|
/* No-data CONTROL always ends with an IN transaction */
|
|
status_direction = 1;
|
|
}
|
|
|
|
/* STATUS stage */
|
|
pid = DWC2_HC_PID_DATA1;
|
|
do {
|
|
ret = chunk_msg(priv, dev, pipe, &pid, status_direction,
|
|
priv->status_buffer, 0);
|
|
} while (ret == -EAGAIN);
|
|
if (ret)
|
|
return ret;
|
|
|
|
dev->act_len = act_len;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int _submit_int_msg(struct dwc2_priv *priv, struct usb_device *dev,
|
|
unsigned long pipe, void *buffer, int len, int interval,
|
|
bool nonblock)
|
|
{
|
|
unsigned long timeout;
|
|
int ret;
|
|
|
|
/* FIXME: what is interval? */
|
|
|
|
timeout = get_timer(0) + USB_TIMEOUT_MS(pipe);
|
|
for (;;) {
|
|
if (get_timer(0) > timeout) {
|
|
#if CONFIG_IS_ENABLED(DM_USB)
|
|
dev_err(dev->dev,
|
|
"Timeout poll on interrupt endpoint\n");
|
|
#else
|
|
log_err("Timeout poll on interrupt endpoint\n");
|
|
#endif
|
|
return -ETIMEDOUT;
|
|
}
|
|
ret = _submit_bulk_msg(priv, dev, pipe, buffer, len);
|
|
if ((ret != -EAGAIN) || nonblock)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
static int dwc2_reset(struct udevice *dev)
|
|
{
|
|
int ret;
|
|
struct dwc2_priv *priv = dev_get_priv(dev);
|
|
|
|
ret = reset_get_bulk(dev, &priv->resets);
|
|
if (ret) {
|
|
dev_warn(dev, "Can't get reset: %d\n", ret);
|
|
/* Return 0 if error due to !CONFIG_DM_RESET and reset
|
|
* DT property is not present.
|
|
*/
|
|
if (ret == -ENOENT || ret == -ENOTSUPP)
|
|
return 0;
|
|
else
|
|
return ret;
|
|
}
|
|
|
|
/* force reset to clear all IP register */
|
|
reset_assert_bulk(&priv->resets);
|
|
ret = reset_deassert_bulk(&priv->resets);
|
|
if (ret) {
|
|
reset_release_bulk(&priv->resets);
|
|
dev_err(dev, "Failed to reset: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dwc2_init_common(struct udevice *dev, struct dwc2_priv *priv)
|
|
{
|
|
struct dwc2_core_regs *regs = priv->regs;
|
|
uint32_t snpsid;
|
|
int i, j;
|
|
int ret;
|
|
|
|
ret = dwc2_reset(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
snpsid = readl(®s->gsnpsid);
|
|
dev_info(dev, "Core Release: %x.%03x\n",
|
|
snpsid >> 12 & 0xf, snpsid & 0xfff);
|
|
|
|
if ((snpsid & DWC2_SNPSID_DEVID_MASK) != DWC2_SNPSID_DEVID_VER_2xx &&
|
|
(snpsid & DWC2_SNPSID_DEVID_MASK) != DWC2_SNPSID_DEVID_VER_3xx) {
|
|
dev_info(dev, "SNPSID invalid (not DWC2 OTG device): %08x\n",
|
|
snpsid);
|
|
return -ENODEV;
|
|
}
|
|
|
|
#ifdef DWC2_PHY_ULPI_EXT_VBUS
|
|
priv->ext_vbus = 1;
|
|
#else
|
|
priv->ext_vbus = 0;
|
|
#endif
|
|
|
|
dwc_otg_core_init(dev);
|
|
|
|
if (usb_get_dr_mode(dev_ofnode(dev)) == USB_DR_MODE_PERIPHERAL) {
|
|
dev_dbg(dev, "USB device %s dr_mode set to %d. Skipping host_init.\n",
|
|
dev->name, usb_get_dr_mode(dev_ofnode(dev)));
|
|
} else {
|
|
dwc_otg_core_host_init(dev, regs);
|
|
}
|
|
|
|
clrsetbits_le32(®s->hprt0, DWC2_HPRT0_PRTENA |
|
|
DWC2_HPRT0_PRTCONNDET | DWC2_HPRT0_PRTENCHNG |
|
|
DWC2_HPRT0_PRTOVRCURRCHNG,
|
|
DWC2_HPRT0_PRTRST);
|
|
mdelay(50);
|
|
clrbits_le32(®s->hprt0, DWC2_HPRT0_PRTENA | DWC2_HPRT0_PRTCONNDET |
|
|
DWC2_HPRT0_PRTENCHNG | DWC2_HPRT0_PRTOVRCURRCHNG |
|
|
DWC2_HPRT0_PRTRST);
|
|
|
|
for (i = 0; i < MAX_DEVICE; i++) {
|
|
for (j = 0; j < MAX_ENDPOINT; j++) {
|
|
priv->in_data_toggle[i][j] = DWC2_HC_PID_DATA0;
|
|
priv->out_data_toggle[i][j] = DWC2_HC_PID_DATA0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add a 1 second delay here. This gives the host controller
|
|
* a bit time before the comminucation with the USB devices
|
|
* is started (the bus is scanned) and fixes the USB detection
|
|
* problems with some problematic USB keys.
|
|
*/
|
|
if (readl(®s->gintsts) & DWC2_GINTSTS_CURMODE_HOST)
|
|
mdelay(1000);
|
|
|
|
printf("USB DWC2\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dwc2_uninit_common(struct dwc2_core_regs *regs)
|
|
{
|
|
/* Put everything in reset. */
|
|
clrsetbits_le32(®s->hprt0, DWC2_HPRT0_PRTENA |
|
|
DWC2_HPRT0_PRTCONNDET | DWC2_HPRT0_PRTENCHNG |
|
|
DWC2_HPRT0_PRTOVRCURRCHNG,
|
|
DWC2_HPRT0_PRTRST);
|
|
}
|
|
|
|
#if !CONFIG_IS_ENABLED(DM_USB)
|
|
int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
|
|
int len, struct devrequest *setup)
|
|
{
|
|
return _submit_control_msg(&local, dev, pipe, buffer, len, setup);
|
|
}
|
|
|
|
int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
|
|
int len)
|
|
{
|
|
return _submit_bulk_msg(&local, dev, pipe, buffer, len);
|
|
}
|
|
|
|
int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
|
|
int len, int interval, bool nonblock)
|
|
{
|
|
return _submit_int_msg(&local, dev, pipe, buffer, len, interval,
|
|
nonblock);
|
|
}
|
|
|
|
/* U-Boot USB control interface */
|
|
int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
|
|
{
|
|
struct dwc2_priv *priv = &local;
|
|
|
|
memset(priv, '\0', sizeof(*priv));
|
|
priv->root_hub_devnum = 0;
|
|
priv->regs = (struct dwc2_core_regs *)CONFIG_USB_DWC2_REG_ADDR;
|
|
priv->aligned_buffer = aligned_buffer_addr;
|
|
priv->status_buffer = status_buffer_addr;
|
|
|
|
/* board-dependant init */
|
|
if (board_usb_init(index, USB_INIT_HOST))
|
|
return -1;
|
|
|
|
return dwc2_init_common(NULL, priv);
|
|
}
|
|
|
|
int usb_lowlevel_stop(int index)
|
|
{
|
|
dwc2_uninit_common(local.regs);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#if CONFIG_IS_ENABLED(DM_USB)
|
|
static int dwc2_submit_control_msg(struct udevice *dev, struct usb_device *udev,
|
|
unsigned long pipe, void *buffer, int length,
|
|
struct devrequest *setup)
|
|
{
|
|
struct dwc2_priv *priv = dev_get_priv(dev);
|
|
|
|
debug("%s: dev='%s', udev=%p, udev->dev='%s', portnr=%d\n", __func__,
|
|
dev->name, udev, udev->dev->name, udev->portnr);
|
|
|
|
return _submit_control_msg(priv, udev, pipe, buffer, length, setup);
|
|
}
|
|
|
|
static int dwc2_submit_bulk_msg(struct udevice *dev, struct usb_device *udev,
|
|
unsigned long pipe, void *buffer, int length)
|
|
{
|
|
struct dwc2_priv *priv = dev_get_priv(dev);
|
|
|
|
debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev);
|
|
|
|
return _submit_bulk_msg(priv, udev, pipe, buffer, length);
|
|
}
|
|
|
|
static int dwc2_submit_int_msg(struct udevice *dev, struct usb_device *udev,
|
|
unsigned long pipe, void *buffer, int length,
|
|
int interval, bool nonblock)
|
|
{
|
|
struct dwc2_priv *priv = dev_get_priv(dev);
|
|
|
|
debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev);
|
|
|
|
return _submit_int_msg(priv, udev, pipe, buffer, length, interval,
|
|
nonblock);
|
|
}
|
|
|
|
static int dwc2_usb_of_to_plat(struct udevice *dev)
|
|
{
|
|
struct dwc2_priv *priv = dev_get_priv(dev);
|
|
|
|
priv->regs = dev_read_addr_ptr(dev);
|
|
if (!priv->regs)
|
|
return -EINVAL;
|
|
|
|
priv->oc_disable = dev_read_bool(dev, "disable-over-current");
|
|
priv->hnp_srp_disable = dev_read_bool(dev, "hnp-srp-disable");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dwc2_setup_phy(struct udevice *dev)
|
|
{
|
|
struct dwc2_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
ret = generic_phy_get_by_index(dev, 0, &priv->phy);
|
|
if (ret) {
|
|
if (ret == -ENOENT)
|
|
return 0; /* no PHY, nothing to do */
|
|
dev_err(dev, "Failed to get USB PHY: %d.\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = generic_phy_init(&priv->phy);
|
|
if (ret) {
|
|
dev_dbg(dev, "Failed to init USB PHY: %d.\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = generic_phy_power_on(&priv->phy);
|
|
if (ret) {
|
|
dev_dbg(dev, "Failed to power on USB PHY: %d.\n", ret);
|
|
generic_phy_exit(&priv->phy);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dwc2_shutdown_phy(struct udevice *dev)
|
|
{
|
|
struct dwc2_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
/* PHY is not valid when generic_phy_get_by_index() = -ENOENT */
|
|
if (!generic_phy_valid(&priv->phy))
|
|
return 0; /* no PHY, nothing to do */
|
|
|
|
ret = generic_phy_power_off(&priv->phy);
|
|
if (ret) {
|
|
dev_dbg(dev, "Failed to power off USB PHY: %d.\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = generic_phy_exit(&priv->phy);
|
|
if (ret) {
|
|
dev_dbg(dev, "Failed to power off USB PHY: %d.\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dwc2_clk_init(struct udevice *dev)
|
|
{
|
|
struct dwc2_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
ret = clk_get_bulk(dev, &priv->clks);
|
|
if (ret == -ENOSYS || ret == -ENOENT)
|
|
return 0;
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = clk_enable_bulk(&priv->clks);
|
|
if (ret) {
|
|
clk_release_bulk(&priv->clks);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dwc2_usb_probe(struct udevice *dev)
|
|
{
|
|
struct dwc2_priv *priv = dev_get_priv(dev);
|
|
struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev);
|
|
int ret;
|
|
|
|
bus_priv->desc_before_addr = true;
|
|
|
|
ret = dwc2_clk_init(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = dwc2_setup_phy(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return dwc2_init_common(dev, priv);
|
|
}
|
|
|
|
static int dwc2_usb_remove(struct udevice *dev)
|
|
{
|
|
struct dwc2_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
ret = dwc_vbus_supply_exit(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = dwc2_shutdown_phy(dev);
|
|
if (ret) {
|
|
dev_dbg(dev, "Failed to shutdown USB PHY: %d.\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
dwc2_uninit_common(priv->regs);
|
|
|
|
reset_release_bulk(&priv->resets);
|
|
clk_disable_bulk(&priv->clks);
|
|
clk_release_bulk(&priv->clks);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct dm_usb_ops dwc2_usb_ops = {
|
|
.control = dwc2_submit_control_msg,
|
|
.bulk = dwc2_submit_bulk_msg,
|
|
.interrupt = dwc2_submit_int_msg,
|
|
};
|
|
|
|
static const struct udevice_id dwc2_usb_ids[] = {
|
|
{ .compatible = "brcm,bcm2835-usb" },
|
|
{ .compatible = "brcm,bcm2708-usb" },
|
|
{ .compatible = "snps,dwc2" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(usb_dwc2) = {
|
|
.name = "dwc2_usb",
|
|
.id = UCLASS_USB,
|
|
.of_match = dwc2_usb_ids,
|
|
.of_to_plat = dwc2_usb_of_to_plat,
|
|
.probe = dwc2_usb_probe,
|
|
.remove = dwc2_usb_remove,
|
|
.ops = &dwc2_usb_ops,
|
|
.priv_auto = sizeof(struct dwc2_priv),
|
|
.flags = DM_FLAG_ALLOC_PRIV_DMA,
|
|
};
|
|
#endif
|