From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/drivers/usb/host/ehci-fsl.c | 315 ++++++++++++++++++++++++++++++++
1 file changed, 315 insertions(+)
create mode 100644 roms/u-boot/drivers/usb/host/ehci-fsl.c
(limited to 'roms/u-boot/drivers/usb/host/ehci-fsl.c')
diff --git a/roms/u-boot/drivers/usb/host/ehci-fsl.c b/roms/u-boot/drivers/usb/host/ehci-fsl.c
new file mode 100644
index 000000000..cf1f88244
--- /dev/null
+++ b/roms/u-boot/drivers/usb/host/ehci-fsl.c
@@ -0,0 +1,315 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2009, 2011, 2016 Freescale Semiconductor, Inc.
+ *
+ * (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
+ *
+ * Author: Tor Krill tor@excito.com
+ */
+
+#include <common.h>
+#include <env.h>
+#include <log.h>
+#include <pci.h>
+#include <usb.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <usb/ehci-ci.h>
+#include <hwconfig.h>
+#include <fsl_usb.h>
+#include <fdt_support.h>
+#include <dm.h>
+
+#include "ehci.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
+#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
+#endif
+
+#if CONFIG_IS_ENABLED(DM_USB)
+struct ehci_fsl_priv {
+ struct ehci_ctrl ehci;
+ fdt_addr_t hcd_base;
+ char *phy_type;
+};
+#endif
+
+static void set_txfifothresh(struct usb_ehci *, u32);
+#if CONFIG_IS_ENABLED(DM_USB)
+static int ehci_fsl_init(struct ehci_fsl_priv *priv, struct usb_ehci *ehci,
+ struct ehci_hccr *hccr, struct ehci_hcor *hcor);
+#else
+static int ehci_fsl_init(int index, struct usb_ehci *ehci,
+ struct ehci_hccr *hccr, struct ehci_hcor *hcor);
+#endif
+
+/* Check USB PHY clock valid */
+static int usb_phy_clk_valid(struct usb_ehci *ehci)
+{
+ if (!((in_be32(&ehci->control) & PHY_CLK_VALID) ||
+ in_be32(&ehci->prictrl))) {
+ printf("USB PHY clock invalid!\n");
+ return 0;
+ } else {
+ return 1;
+ }
+}
+
+#if CONFIG_IS_ENABLED(DM_USB)
+static int ehci_fsl_of_to_plat(struct udevice *dev)
+{
+ struct ehci_fsl_priv *priv = dev_get_priv(dev);
+ const void *prop;
+
+ prop = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy_type",
+ NULL);
+ if (prop) {
+ priv->phy_type = (char *)prop;
+ debug("phy_type %s\n", priv->phy_type);
+ }
+
+ return 0;
+}
+
+static int ehci_fsl_init_after_reset(struct ehci_ctrl *ctrl)
+{
+ struct usb_ehci *ehci = NULL;
+ struct ehci_fsl_priv *priv = container_of(ctrl, struct ehci_fsl_priv,
+ ehci);
+#ifdef CONFIG_PPC
+ ehci = (struct usb_ehci *)lower_32_bits(priv->hcd_base);
+#else
+ ehci = (struct usb_ehci *)priv->hcd_base;
+#endif
+
+ if (ehci_fsl_init(priv, ehci, priv->ehci.hccr, priv->ehci.hcor) < 0)
+ return -ENXIO;
+
+ return 0;
+}
+
+static const struct ehci_ops fsl_ehci_ops = {
+ .init_after_reset = ehci_fsl_init_after_reset,
+};
+
+static int ehci_fsl_probe(struct udevice *dev)
+{
+ struct ehci_fsl_priv *priv = dev_get_priv(dev);
+ struct usb_ehci *ehci = NULL;
+ struct ehci_hccr *hccr;
+ struct ehci_hcor *hcor;
+ struct ehci_ctrl *ehci_ctrl = &priv->ehci;
+
+ /*
+ * Get the base address for EHCI controller from the device node
+ */
+ priv->hcd_base = dev_read_addr(dev);
+ if (priv->hcd_base == FDT_ADDR_T_NONE) {
+ debug("Can't get the EHCI register base address\n");
+ return -ENXIO;
+ }
+#ifdef CONFIG_PPC
+ ehci = (struct usb_ehci *)lower_32_bits(priv->hcd_base);
+#else
+ ehci = (struct usb_ehci *)priv->hcd_base;
+#endif
+ hccr = (struct ehci_hccr *)(&ehci->caplength);
+ hcor = (struct ehci_hcor *)
+ ((void *)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
+
+ ehci_ctrl->has_fsl_erratum_a005275 = has_erratum_a005275();
+
+ if (ehci_fsl_init(priv, ehci, hccr, hcor) < 0)
+ return -ENXIO;
+
+ debug("ehci-fsl: init hccr %p and hcor %p hc_length %d\n",
+ (void *)hccr, (void *)hcor,
+ HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
+
+ return ehci_register(dev, hccr, hcor, &fsl_ehci_ops, 0, USB_INIT_HOST);
+}
+
+static const struct udevice_id ehci_usb_ids[] = {
+ { .compatible = "fsl-usb2-mph", },
+ { .compatible = "fsl-usb2-dr", },
+ { }
+};
+
+U_BOOT_DRIVER(ehci_fsl) = {
+ .name = "ehci_fsl",
+ .id = UCLASS_USB,
+ .of_match = ehci_usb_ids,
+ .of_to_plat = ehci_fsl_of_to_plat,
+ .probe = ehci_fsl_probe,
+ .remove = ehci_deregister,
+ .ops = &ehci_usb_ops,
+ .plat_auto = sizeof(struct usb_plat),
+ .priv_auto = sizeof(struct ehci_fsl_priv),
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
+#else
+/*
+ * Create the appropriate control structures to manage
+ * a new EHCI host controller.
+ *
+ * Excerpts from linux ehci fsl driver.
+ */
+int ehci_hcd_init(int index, enum usb_init_type init,
+ struct ehci_hccr **hccr, struct ehci_hcor **hcor)
+{
+ struct ehci_ctrl *ehci_ctrl = container_of(hccr,
+ struct ehci_ctrl, hccr);
+ struct usb_ehci *ehci = NULL;
+
+ switch (index) {
+ case 0:
+ ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB1_ADDR;
+ break;
+ case 1:
+ ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB2_ADDR;
+ break;
+ default:
+ printf("ERROR: wrong controller index!!\n");
+ return -EINVAL;
+ };
+
+ *hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
+ *hcor = (struct ehci_hcor *)((uint32_t) *hccr +
+ HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
+
+ ehci_ctrl->has_fsl_erratum_a005275 = has_erratum_a005275();
+
+ return ehci_fsl_init(index, ehci, *hccr, *hcor);
+}
+
+/*
+ * Destroy the appropriate control structures corresponding
+ * the the EHCI host controller.
+ */
+int ehci_hcd_stop(int index)
+{
+ return 0;
+}
+#endif
+
+#if CONFIG_IS_ENABLED(DM_USB)
+static int ehci_fsl_init(struct ehci_fsl_priv *priv, struct usb_ehci *ehci,
+ struct ehci_hccr *hccr, struct ehci_hcor *hcor)
+#else
+static int ehci_fsl_init(int index, struct usb_ehci *ehci,
+ struct ehci_hccr *hccr, struct ehci_hcor *hcor)
+#endif
+{
+ const char *phy_type = NULL;
+#if !CONFIG_IS_ENABLED(DM_USB)
+ size_t len;
+ char current_usb_controller[5];
+#endif
+#ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
+ char usb_phy[5];
+
+ usb_phy[0] = '\0';
+#endif
+ if (has_erratum_a007075()) {
+ /*
+ * A 5ms delay is needed after applying soft-reset to the
+ * controller to let external ULPI phy come out of reset.
+ * This delay needs to be added before re-initializing
+ * the controller after soft-resetting completes
+ */
+ mdelay(5);
+ }
+
+ /* Set to Host mode */
+ setbits_le32(&ehci->usbmode, CM_HOST);
+
+ out_be32(&ehci->snoop1, SNOOP_SIZE_2GB);
+ out_be32(&ehci->snoop2, 0x80000000 | SNOOP_SIZE_2GB);
+
+ /* Init phy */
+#if CONFIG_IS_ENABLED(DM_USB)
+ if (priv->phy_type)
+ phy_type = priv->phy_type;
+#else
+ memset(current_usb_controller, '\0', 5);
+ snprintf(current_usb_controller, sizeof(current_usb_controller),
+ "usb%d", index+1);
+
+ if (hwconfig_sub(current_usb_controller, "phy_type"))
+ phy_type = hwconfig_subarg(current_usb_controller,
+ "phy_type", &len);
+#endif
+ else
+ phy_type = env_get("usb_phy_type");
+
+ if (!phy_type) {
+#ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
+ /* if none specified assume internal UTMI */
+ strcpy(usb_phy, "utmi");
+ phy_type = usb_phy;
+#else
+ printf("WARNING: USB phy type not defined !!\n");
+ return -1;
+#endif
+ }
+
+ if (!strncmp(phy_type, "utmi", 4)) {
+#if defined(CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY)
+ clrsetbits_be32(&ehci->control, CONTROL_REGISTER_W1C_MASK,
+ PHY_CLK_SEL_UTMI);
+ clrsetbits_be32(&ehci->control, CONTROL_REGISTER_W1C_MASK,
+ UTMI_PHY_EN);
+ udelay(1000); /* delay required for PHY Clk to appear */
+#endif
+ out_le32(&(hcor)->or_portsc[0], PORT_PTS_UTMI);
+ clrsetbits_be32(&ehci->control, CONTROL_REGISTER_W1C_MASK,
+ USB_EN);
+ } else {
+ clrsetbits_be32(&ehci->control, CONTROL_REGISTER_W1C_MASK,
+ PHY_CLK_SEL_ULPI);
+ clrsetbits_be32(&ehci->control, UTMI_PHY_EN |
+ CONTROL_REGISTER_W1C_MASK, USB_EN);
+ udelay(1000); /* delay required for PHY Clk to appear */
+ if (!usb_phy_clk_valid(ehci))
+ return -EINVAL;
+ out_le32(&(hcor)->or_portsc[0], PORT_PTS_ULPI);
+ }
+
+ out_be32(&ehci->prictrl, 0x0000000c);
+ out_be32(&ehci->age_cnt_limit, 0x00000040);
+ out_be32(&ehci->sictrl, 0x00000001);
+
+ in_le32(&ehci->usbmode);
+
+ if (has_erratum_a007798())
+ set_txfifothresh(ehci, TXFIFOTHRESH);
+
+ if (has_erratum_a004477()) {
+ /*
+ * When reset is issued while any ULPI transaction is ongoing
+ * then it may result to corruption of ULPI Function Control
+ * Register which eventually causes phy clock to enter low
+ * power mode which stops the clock. Thus delay is required
+ * before reset to let ongoing ULPI transaction complete.
+ */
+ udelay(1);
+ }
+ return 0;
+}
+
+/*
+ * Setting the value of TXFIFO_THRESH field in TXFILLTUNING register
+ * to counter DDR latencies in writing data into Tx buffer.
+ * This prevents Tx buffer from getting underrun
+ */
+static void set_txfifothresh(struct usb_ehci *ehci, u32 txfifo_thresh)
+{
+ u32 cmd;
+ cmd = ehci_readl(&ehci->txfilltuning);
+ cmd &= ~TXFIFO_THRESH_MASK;
+ cmd |= TXFIFO_THRESH(txfifo_thresh);
+ ehci_writel(&ehci->txfilltuning, cmd);
+}
--
cgit