linux/drivers/usb/host/fsl-mph-dr-of.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Setup platform devices needed by the Freescale multi-port host
 * and/or dual-role USB controller modules based on the description
 * in flat device tree.
 */

#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>

struct fsl_usb2_dev_data { … };

static struct fsl_usb2_dev_data dr_mode_data[] = …;

static struct fsl_usb2_dev_data *get_dr_mode_data(struct device_node *np)
{ … }

static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
{ … }

static struct platform_device *fsl_usb2_device_register(
					struct platform_device *ofdev,
					struct fsl_usb2_platform_data *pdata,
					const char *name, int id)
{ … }

static const struct of_device_id fsl_usb2_mph_dr_of_match[];

static enum fsl_usb2_controller_ver usb_get_ver_info(struct device_node *np)
{ … }

static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
{ … }

static int __unregister_subdev(struct device *dev, void *d)
{ … }

static void fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
{ … }

#ifdef CONFIG_PPC_MPC512x

#define USBGENCTRL …
#define GC_WU_INT_CLR …
#define GC_ULPI_SEL …
#define GC_PPP …
#define GC_PFP …
#define GC_WU_ULPI_EN …
#define GC_WU_IE …

#define ISIPHYCTRL …
#define PHYCTRL_PHYE …
#define PHYCTRL_BSENH …
#define PHYCTRL_BSEN …
#define PHYCTRL_LSFE …
#define PHYCTRL_PXE …

static int fsl_usb2_mpc5121_init(struct platform_device *pdev)
{
	struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
	struct clk *clk;
	int err;

	clk = devm_clk_get(pdev->dev.parent, "ipg");
	if (IS_ERR(clk)) {
		dev_err(&pdev->dev, "failed to get clk\n");
		return PTR_ERR(clk);
	}
	err = clk_prepare_enable(clk);
	if (err) {
		dev_err(&pdev->dev, "failed to enable clk\n");
		return err;
	}
	pdata->clk = clk;

	if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
		u32 reg = 0;

		if (pdata->invert_drvvbus)
			reg |= GC_PPP;

		if (pdata->invert_pwr_fault)
			reg |= GC_PFP;

		out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
		out_be32(pdata->regs + USBGENCTRL, reg);
	}
	return 0;
}

static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
{
	struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);

	pdata->regs = NULL;

	if (pdata->clk)
		clk_disable_unprepare(pdata->clk);
}

static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
	.big_endian_desc = 1,
	.big_endian_mmio = 1,
	.es = 1,
	.have_sysif_regs = 0,
	.le_setup_buf = 1,
	.init = fsl_usb2_mpc5121_init,
	.exit = fsl_usb2_mpc5121_exit,
};
#endif /* CONFIG_PPC_MPC512x */

static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = …;

static const struct of_device_id fsl_usb2_mph_dr_of_match[] = …;
MODULE_DEVICE_TABLE(of, fsl_usb2_mph_dr_of_match);

static struct platform_driver fsl_usb2_mph_dr_driver = …;

module_platform_driver(…) …;

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;