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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: Helmut Buchsbaum <helmut.buchsbaum@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Helmut Buchsbaum 2016-02-09 20:47:17 +01:00 committed by David S. Miller
parent 6665e62387
commit c0e6cb1fed
1 changed files with 29 additions and 0 deletions
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29
drivers/net/phy/spi_ks8995.c
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@ -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;