linux/drivers/net/mdio/mdio-mscc-miim.c

// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/*
 * Driver for the MDIO interface of Microsemi network switches.
 *
 * Author: Alexandre Belloni <[email protected]>
 * Copyright (c) 2017 Microsemi Corporation
 */

#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/kernel.h>
#include <linux/mdio/mdio-mscc-miim.h>
#include <linux/mfd/ocelot.h>
#include <linux/module.h>
#include <linux/of_mdio.h>
#include <linux/phy.h>
#include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/reset.h>

#define MSCC_MIIM_REG_STATUS …
#define MSCC_MIIM_STATUS_STAT_PENDING …
#define MSCC_MIIM_STATUS_STAT_BUSY …
#define MSCC_MIIM_REG_CMD …
#define MSCC_MIIM_CMD_OPR_WRITE …
#define MSCC_MIIM_CMD_OPR_READ …
#define MSCC_MIIM_CMD_WRDATA_SHIFT …
#define MSCC_MIIM_CMD_REGAD_SHIFT …
#define MSCC_MIIM_CMD_PHYAD_SHIFT …
#define MSCC_MIIM_CMD_VLD …
#define MSCC_MIIM_REG_DATA …
#define MSCC_MIIM_DATA_ERROR …
#define MSCC_MIIM_REG_CFG …
#define MSCC_MIIM_CFG_PRESCALE_MASK …

#define MSCC_PHY_REG_PHY_CFG …
#define PHY_CFG_PHY_ENA …
#define PHY_CFG_PHY_COMMON_RESET …
#define PHY_CFG_PHY_RESET …
#define MSCC_PHY_REG_PHY_STATUS …

#define LAN966X_CUPHY_COMMON_CFG …
#define CUPHY_COMMON_CFG_RESET_N …

struct mscc_miim_info { … };

struct mscc_miim_dev { … };

/* When high resolution timers aren't built-in: we can't use usleep_range() as
 * we would sleep way too long. Use udelay() instead.
 */
#define mscc_readx_poll_timeout(op, addr, val, cond, delay_us, timeout_us) …

static int mscc_miim_status(struct mii_bus *bus)
{ … }

static int mscc_miim_wait_ready(struct mii_bus *bus)
{ … }

static int mscc_miim_wait_pending(struct mii_bus *bus)
{ … }

static int mscc_miim_read(struct mii_bus *bus, int mii_id, int regnum)
{ … }

static int mscc_miim_write(struct mii_bus *bus, int mii_id,
			   int regnum, u16 value)
{ … }

static int mscc_miim_reset(struct mii_bus *bus)
{ … }

static const struct regmap_config mscc_miim_regmap_config = …;

static const struct regmap_config mscc_miim_phy_regmap_config = …;

int mscc_miim_setup(struct device *dev, struct mii_bus **pbus, const char *name,
		    struct regmap *mii_regmap, int status_offset,
		    bool ignore_read_errors)
{ … }
EXPORT_SYMBOL(…);

static int mscc_miim_clk_set(struct mii_bus *bus)
{ … }

static int mscc_miim_probe(struct platform_device *pdev)
{ … }

static void mscc_miim_remove(struct platform_device *pdev)
{ … }

static const struct mscc_miim_info mscc_ocelot_miim_info = …;

static const struct mscc_miim_info microchip_lan966x_miim_info = …;

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

static struct platform_driver mscc_miim_driver = …;

module_platform_driver(…) …;

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