drivers/net/phy/icplus.c

Source file repositories/reference/linux-study-clean/drivers/net/phy/icplus.c

File Facts

System
Linux kernel
Corpus path
drivers/net/phy/icplus.c
Extension
.c
Size
15319 bytes
Lines
636
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct ip101g_hw_stat {
	const char *name;
	int page;
};

static struct ip101g_hw_stat ip101g_hw_stats[] = {
	{ "phy_crc_errors", 1 },
	{ "phy_symbol_errors", 11, },
};

struct ip101a_g_phy_priv {
	enum ip101gr_sel_intr32 sel_intr32;
	u64 stats[ARRAY_SIZE(ip101g_hw_stats)];
};

static int ip175c_config_init(struct phy_device *phydev)
{
	int err, i;
	static int full_reset_performed;

	if (full_reset_performed == 0) {

		/* master reset */
		err = mdiobus_write(phydev->mdio.bus, 30, 0, 0x175c);
		if (err < 0)
			return err;

		/* ensure no bus delays overlap reset period */
		err = mdiobus_read(phydev->mdio.bus, 30, 0);

		/* data sheet specifies reset period is 2 msec */
		mdelay(2);

		/* enable IP175C mode */
		err = mdiobus_write(phydev->mdio.bus, 29, 31, 0x175c);
		if (err < 0)
			return err;

		/* Set MII0 speed and duplex (in PHY mode) */
		err = mdiobus_write(phydev->mdio.bus, 29, 22, 0x420);
		if (err < 0)
			return err;

		/* reset switch ports */
		for (i = 0; i < 5; i++) {
			err = mdiobus_write(phydev->mdio.bus, i,
					    MII_BMCR, BMCR_RESET);
			if (err < 0)
				return err;
		}

		for (i = 0; i < 5; i++)
			err = mdiobus_read(phydev->mdio.bus, i, MII_BMCR);

		mdelay(2);

		full_reset_performed = 1;
	}

	if (phydev->mdio.addr != 4) {
		phydev->state = PHY_RUNNING;
		phydev->speed = SPEED_100;
		phydev->duplex = DUPLEX_FULL;
		phydev->link = 1;
		netif_carrier_on(phydev->attached_dev);
	}

	return 0;
}

static int ip1001_config_init(struct phy_device *phydev)
{
	int c;

	/* Enable Auto Power Saving mode */
	c = phy_read(phydev, IP1001_SPEC_CTRL_STATUS_2);
	if (c < 0)
		return c;
	c |= IP1001_APS_ON;
	c = phy_write(phydev, IP1001_SPEC_CTRL_STATUS_2, c);
	if (c < 0)
		return c;

	if (phy_interface_is_rgmii(phydev)) {

		c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS);
		if (c < 0)
			return c;

		c &= ~(IP1001_RXPHASE_SEL | IP1001_TXPHASE_SEL);

Annotation

Implementation Notes