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Commit c0e6cb1f authored by Helmut Buchsbaum's avatar Helmut Buchsbaum Committed by David S. Miller
Browse files

net: phy: spi_ks8995: add support for MICREL KSZ8795CLX 



Add support for MICREL KSZ8795CLX Integrated 5-Port, 10-/100-Managed
Ethernet Switch with Gigabit GMII/RGMII and MII/RMII interfaces.

Signed-off-by: default avatarHelmut Buchsbaum <helmut.buchsbaum@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6665e623

drivers/net/phy/spi_ks8995.c

+29 −0
Original line number Diff line number Diff line
@@ -77,6 +77,7 @@ 


#define KS8995_REGS_SIZE	0x80

#define KSZ8864_REGS_SIZE	0x100

#define KSZ8795_REGS_SIZE	0x100



#define ID1_CHIPID_M		0xf

#define ID1_CHIPID_S		4
@@ -85,9 +86,11 @@ 
#define ID1_START_SW		1	/* start the switch */



#define FAMILY_KS8995		0x95

#define FAMILY_KSZ8795		0x87

#define CHIPID_M		0

#define KS8995_CHIP_ID		0x00

#define KSZ8864_CHIP_ID		0x01

#define KSZ8795_CHIP_ID		0x09



#define KS8995_CMD_WRITE	0x02U

#define KS8995_CMD_READ		0x03U
@@ -97,6 +100,7 @@ 
enum ks8995_chip_variant {

	ks8995,

	ksz8864,

	ksz8795,

	max_variant

};
@@ -126,6 +130,14 @@ static const struct ks8995_chip_params ks8995_chip[] = { 
		.addr_width = 8,

		.addr_shift = 0,

	},

	[ksz8795] = {

		.name = "KSZ8795CLX",

		.family_id = FAMILY_KSZ8795,

		.chip_id = KSZ8795_CHIP_ID,

		.regs_size = KSZ8795_REGS_SIZE,

		.addr_width = 12,

		.addr_shift = 1,

	},

};



struct ks8995_pdata {
@@ -145,6 +157,7 @@ struct ks8995_switch { 
static const struct spi_device_id ks8995_id[] = {

	{"ks8995", ks8995},

	{"ksz8864", ksz8864},

	{"ksz8795", ksz8795},

	{ }

};

MODULE_DEVICE_TABLE(spi, ks8995_id);
@@ -358,6 +371,22 @@ static int ks8995_get_revision(struct ks8995_switch *ks) 
			err = -ENODEV;

		}

		break;

	case FAMILY_KSZ8795:

		/* try reading chip id at CHIP ID1 */

		err = ks8995_read_reg(ks, KS8995_REG_ID1, &id1);

		if (err) {

			err = -EIO;

			goto err_out;

		}



		if (get_chip_id(id1) == ks->chip->chip_id) {

			ks->revision_id = get_chip_rev(id1);

		} else {

			dev_err(&ks->spi->dev, "unsupported chip id for KSZ8795 family: 0x%02x\n",

				id1);

			err = -ENODEV;

		}

		break;

	default:

		dev_err(&ks->spi->dev, "unsupported family id: 0x%02x\n", id0);

		err = -ENODEV;