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-msm.c | 150 ++++++++++++++++++++++++++++++++
1 file changed, 150 insertions(+)
create mode 100644 roms/u-boot/drivers/usb/host/ehci-msm.c
(limited to 'roms/u-boot/drivers/usb/host/ehci-msm.c')
diff --git a/roms/u-boot/drivers/usb/host/ehci-msm.c b/roms/u-boot/drivers/usb/host/ehci-msm.c
new file mode 100644
index 000000000..d160cf019
--- /dev/null
+++ b/roms/u-boot/drivers/usb/host/ehci-msm.c
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Qualcomm EHCI driver
+ *
+ * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
+ *
+ * Based on Linux driver
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <usb.h>
+#include <usb/ehci-ci.h>
+#include <usb/ulpi.h>
+#include <wait_bit.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <linux/compat.h>
+#include "ehci.h"
+
+struct msm_ehci_priv {
+ struct ehci_ctrl ctrl; /* Needed by EHCI */
+ struct usb_ehci *ehci; /* Start of IP core*/
+ struct ulpi_viewport ulpi_vp; /* ULPI Viewport */
+ struct phy phy;
+};
+
+static int msm_init_after_reset(struct ehci_ctrl *dev)
+{
+ struct msm_ehci_priv *p = container_of(dev, struct msm_ehci_priv, ctrl);
+ struct usb_ehci *ehci = p->ehci;
+
+ generic_phy_reset(&p->phy);
+
+ /* set mode to host controller */
+ writel(CM_HOST, &ehci->usbmode);
+
+ return 0;
+}
+
+static const struct ehci_ops msm_ehci_ops = {
+ .init_after_reset = msm_init_after_reset
+};
+
+static int ehci_usb_probe(struct udevice *dev)
+{
+ struct msm_ehci_priv *p = dev_get_priv(dev);
+ struct usb_ehci *ehci = p->ehci;
+ struct usb_plat *plat = dev_get_plat(dev);
+ struct ehci_hccr *hccr;
+ struct ehci_hcor *hcor;
+ int ret;
+
+ hccr = (struct ehci_hccr *)((phys_addr_t)&ehci->caplength);
+ hcor = (struct ehci_hcor *)((phys_addr_t)hccr +
+ HC_LENGTH(ehci_readl(&(hccr)->cr_capbase)));
+
+ ret = ehci_setup_phy(dev, &p->phy, 0);
+ if (ret)
+ return ret;
+
+ ret = board_usb_init(0, plat->init_type);
+ if (ret < 0)
+ return ret;
+
+ return ehci_register(dev, hccr, hcor, &msm_ehci_ops, 0,
+ plat->init_type);
+}
+
+static int ehci_usb_remove(struct udevice *dev)
+{
+ struct msm_ehci_priv *p = dev_get_priv(dev);
+ struct usb_ehci *ehci = p->ehci;
+ int ret;
+
+ ret = ehci_deregister(dev);
+ if (ret)
+ return ret;
+
+ /* Stop controller. */
+ clrbits_le32(&ehci->usbcmd, CMD_RUN);
+
+ ret = ehci_shutdown_phy(dev, &p->phy);
+ if (ret)
+ return ret;
+
+ ret = board_usb_init(0, USB_INIT_DEVICE); /* Board specific hook */
+ if (ret < 0)
+ return ret;
+
+ /* Reset controller */
+ setbits_le32(&ehci->usbcmd, CMD_RESET);
+
+ /* Wait for reset */
+ if (wait_for_bit_le32(&ehci->usbcmd, CMD_RESET, false, 30, false)) {
+ printf("Stuck on USB reset.\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static int ehci_usb_of_to_plat(struct udevice *dev)
+{
+ struct msm_ehci_priv *priv = dev_get_priv(dev);
+
+ priv->ulpi_vp.port_num = 0;
+ priv->ehci = dev_read_addr_ptr(dev);
+
+ if (priv->ehci == (void *)FDT_ADDR_T_NONE)
+ return -EINVAL;
+
+ /* Warning: this will not work if viewport address is > 64 bit due to
+ * ULPI design.
+ */
+ priv->ulpi_vp.viewport_addr = (phys_addr_t)&priv->ehci->ulpi_viewpoint;
+
+ return 0;
+}
+
+#if defined(CONFIG_CI_UDC)
+/* Little quirk that MSM needs with Chipidea controller
+ * Must reinit phy after reset
+ */
+void ci_init_after_reset(struct ehci_ctrl *ctrl)
+{
+ struct msm_ehci_priv *p = ctrl->priv;
+
+ generic_phy_reset(&p->phy);
+}
+#endif
+
+static const struct udevice_id ehci_usb_ids[] = {
+ { .compatible = "qcom,ehci-host", },
+ { }
+};
+
+U_BOOT_DRIVER(usb_ehci) = {
+ .name = "ehci_msm",
+ .id = UCLASS_USB,
+ .of_match = ehci_usb_ids,
+ .of_to_plat = ehci_usb_of_to_plat,
+ .probe = ehci_usb_probe,
+ .remove = ehci_usb_remove,
+ .ops = &ehci_usb_ops,
+ .priv_auto = sizeof(struct msm_ehci_priv),
+ .plat_auto = sizeof(struct usb_plat),
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
--
cgit