ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/usb/host/ohci-nxp.c b/marvell/linux/drivers/usb/host/ohci-nxp.c
new file mode 100644
index 0000000..07cee8c
--- /dev/null
+++ b/marvell/linux/drivers/usb/host/ohci-nxp.c
@@ -0,0 +1,292 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * driver for NXP USB Host devices
+ *
+ * Currently supported OHCI host devices:
+ * - NXP LPC32xx
+ *
+ * Authors: Dmitry Chigirev <source@mvista.com>
+ * Vitaly Wool <vitalywool@gmail.com>
+ *
+ * register initialization is based on code examples provided by Philips
+ * Copyright (c) 2005 Koninklijke Philips Electronics N.V.
+ *
+ * NOTE: This driver does not have suspend/resume functionality
+ * This driver is intended for engineering development purposes only
+ *
+ * 2005-2006 (c) MontaVista Software, Inc.
+ */
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/usb/isp1301.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include "ohci.h"
+
+#define USB_CONFIG_BASE 0x31020000
+
+/* USB_OTG_STAT_CONTROL bit defines */
+#define TRANSPARENT_I2C_EN (1 << 7)
+#define HOST_EN (1 << 0)
+
+/* On LPC32xx, those are undefined */
+#ifndef start_int_set_falling_edge
+#define start_int_set_falling_edge(irq)
+#define start_int_set_rising_edge(irq)
+#define start_int_ack(irq)
+#define start_int_mask(irq)
+#define start_int_umask(irq)
+#endif
+
+#define DRIVER_DESC "OHCI NXP driver"
+
+static const char hcd_name[] = "ohci-nxp";
+static struct hc_driver __read_mostly ohci_nxp_hc_driver;
+
+static struct i2c_client *isp1301_i2c_client;
+
+static struct clk *usb_host_clk;
+
+static void isp1301_configure_lpc32xx(void)
+{
+ /* LPC32XX only supports DAT_SE0 USB mode */
+ /* This sequence is important */
+
+ /* Disable transparent UART mode first */
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ (ISP1301_I2C_MODE_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR),
+ MC1_UART_EN);
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ (ISP1301_I2C_MODE_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR),
+ ~MC1_SPEED_REG);
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ ISP1301_I2C_MODE_CONTROL_1, MC1_SPEED_REG);
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ (ISP1301_I2C_MODE_CONTROL_2 | ISP1301_I2C_REG_CLEAR_ADDR),
+ ~0);
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ ISP1301_I2C_MODE_CONTROL_2,
+ (MC2_BI_DI | MC2_PSW_EN | MC2_SPD_SUSP_CTRL));
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ (ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR), ~0);
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ ISP1301_I2C_MODE_CONTROL_1, MC1_DAT_SE0);
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ ISP1301_I2C_OTG_CONTROL_1,
+ (OTG1_DM_PULLDOWN | OTG1_DP_PULLDOWN));
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ (ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR),
+ (OTG1_DM_PULLUP | OTG1_DP_PULLUP));
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ ISP1301_I2C_INTERRUPT_LATCH | ISP1301_I2C_REG_CLEAR_ADDR, ~0);
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ ISP1301_I2C_INTERRUPT_FALLING | ISP1301_I2C_REG_CLEAR_ADDR,
+ ~0);
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ ISP1301_I2C_INTERRUPT_RISING | ISP1301_I2C_REG_CLEAR_ADDR, ~0);
+
+ printk(KERN_INFO "ISP1301 Vendor ID : 0x%04x\n",
+ i2c_smbus_read_word_data(isp1301_i2c_client, 0x00));
+ printk(KERN_INFO "ISP1301 Product ID : 0x%04x\n",
+ i2c_smbus_read_word_data(isp1301_i2c_client, 0x02));
+ printk(KERN_INFO "ISP1301 Version ID : 0x%04x\n",
+ i2c_smbus_read_word_data(isp1301_i2c_client, 0x14));
+}
+
+static void isp1301_configure(void)
+{
+ isp1301_configure_lpc32xx();
+}
+
+static inline void isp1301_vbus_on(void)
+{
+ i2c_smbus_write_byte_data(isp1301_i2c_client, ISP1301_I2C_OTG_CONTROL_1,
+ OTG1_VBUS_DRV);
+}
+
+static inline void isp1301_vbus_off(void)
+{
+ i2c_smbus_write_byte_data(isp1301_i2c_client,
+ ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR,
+ OTG1_VBUS_DRV);
+}
+
+static void ohci_nxp_start_hc(void)
+{
+ void __iomem *usb_otg_stat_control = ioremap(USB_CONFIG_BASE + 0x110, 4);
+ unsigned long tmp;
+
+ if (WARN_ON(!usb_otg_stat_control))
+ return;
+
+ tmp = __raw_readl(usb_otg_stat_control) | HOST_EN;
+
+ __raw_writel(tmp, usb_otg_stat_control);
+ isp1301_vbus_on();
+
+ iounmap(usb_otg_stat_control);
+}
+
+static void ohci_nxp_stop_hc(void)
+{
+ void __iomem *usb_otg_stat_control = ioremap(USB_CONFIG_BASE + 0x110, 4);
+ unsigned long tmp;
+
+ if (WARN_ON(!usb_otg_stat_control))
+ return;
+
+ isp1301_vbus_off();
+ tmp = __raw_readl(usb_otg_stat_control) & ~HOST_EN;
+ __raw_writel(tmp, usb_otg_stat_control);
+
+ iounmap(usb_otg_stat_control);
+}
+
+static int ohci_hcd_nxp_probe(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = 0;
+ const struct hc_driver *driver = &ohci_nxp_hc_driver;
+ struct resource *res;
+ int ret = 0, irq;
+ struct device_node *isp1301_node;
+
+ if (pdev->dev.of_node) {
+ isp1301_node = of_parse_phandle(pdev->dev.of_node,
+ "transceiver", 0);
+ } else {
+ isp1301_node = NULL;
+ }
+
+ isp1301_i2c_client = isp1301_get_client(isp1301_node);
+ of_node_put(isp1301_node);
+ if (!isp1301_i2c_client)
+ return -EPROBE_DEFER;
+
+ ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+ if (ret)
+ goto fail_disable;
+
+ dev_dbg(&pdev->dev, "%s: " DRIVER_DESC " (nxp)\n", hcd_name);
+ if (usb_disabled()) {
+ dev_err(&pdev->dev, "USB is disabled\n");
+ ret = -ENODEV;
+ goto fail_disable;
+ }
+
+ /* Enable USB host clock */
+ usb_host_clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(usb_host_clk)) {
+ dev_err(&pdev->dev, "failed to acquire USB OHCI clock\n");
+ ret = PTR_ERR(usb_host_clk);
+ goto fail_disable;
+ }
+
+ ret = clk_prepare_enable(usb_host_clk);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to start USB OHCI clock\n");
+ goto fail_disable;
+ }
+
+ isp1301_configure();
+
+ hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
+ if (!hcd) {
+ dev_err(&pdev->dev, "Failed to allocate HC buffer\n");
+ ret = -ENOMEM;
+ goto fail_hcd;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(hcd->regs)) {
+ ret = PTR_ERR(hcd->regs);
+ goto fail_resource;
+ }
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ ret = -ENXIO;
+ goto fail_resource;
+ }
+
+ ohci_nxp_start_hc();
+ platform_set_drvdata(pdev, hcd);
+
+ dev_info(&pdev->dev, "at 0x%p, irq %d\n", hcd->regs, hcd->irq);
+ ret = usb_add_hcd(hcd, irq, 0);
+ if (ret == 0) {
+ device_wakeup_enable(hcd->self.controller);
+ return ret;
+ }
+
+ ohci_nxp_stop_hc();
+fail_resource:
+ usb_put_hcd(hcd);
+fail_hcd:
+ clk_disable_unprepare(usb_host_clk);
+fail_disable:
+ isp1301_i2c_client = NULL;
+ return ret;
+}
+
+static int ohci_hcd_nxp_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ usb_remove_hcd(hcd);
+ ohci_nxp_stop_hc();
+ usb_put_hcd(hcd);
+ clk_disable_unprepare(usb_host_clk);
+ isp1301_i2c_client = NULL;
+
+ return 0;
+}
+
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:usb-ohci");
+
+#ifdef CONFIG_OF
+static const struct of_device_id ohci_hcd_nxp_match[] = {
+ { .compatible = "nxp,ohci-nxp" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ohci_hcd_nxp_match);
+#endif
+
+static struct platform_driver ohci_hcd_nxp_driver = {
+ .driver = {
+ .name = "usb-ohci",
+ .of_match_table = of_match_ptr(ohci_hcd_nxp_match),
+ },
+ .probe = ohci_hcd_nxp_probe,
+ .remove = ohci_hcd_nxp_remove,
+};
+
+static int __init ohci_nxp_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ohci_init_driver(&ohci_nxp_hc_driver, NULL);
+ return platform_driver_register(&ohci_hcd_nxp_driver);
+}
+module_init(ohci_nxp_init);
+
+static void __exit ohci_nxp_cleanup(void)
+{
+ platform_driver_unregister(&ohci_hcd_nxp_driver);
+}
+module_exit(ohci_nxp_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL v2");