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net: ks8851: Clean up chip ID readout

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There is only one chip ID in the table of chip IDs for this chip.
Read out the chip ID instead and mask off the last "revision" bit
to check the chip ID, this works for all chips in the family. Then
drop the chip ID passing around.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Marek Vasut 2020-03-25 18:15:46 +01:00
parent 63f22f5998
commit eb69d8bf3c
1 changed files with 2 additions and 19 deletions
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21
drivers/net/ks8851_mll.c
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@ -19,11 +19,6 @@
#define RX_BUF_SIZE 2000
static const struct chip_id chip_ids[] = {
{CIDER_ID, "KSZ8851"},
{0, NULL},
};
/*
* struct ks_net - KS8851 driver private data
* @bus_width : i/o bus width.
@ -333,7 +328,7 @@ static void ks_setup_int(struct eth_device *dev)
static int ks8851_mll_detect_chip(struct eth_device *dev)
{
unsigned short val, i;
unsigned short val;
ks_read_config(dev);
@ -350,19 +345,11 @@ static int ks8851_mll_detect_chip(struct eth_device *dev)
debug("Read back KS8851 id 0x%x\n", val);
/* only one entry in the table */
val &= 0xfff0;
for (i = 0; chip_ids[i].id != 0; i++) {
if (chip_ids[i].id == val)
break;
}
if (!chip_ids[i].id) {
if ((val & 0xfff0) != CIDER_ID) {
printf(DRIVERNAME ": Unknown chip ID %04x\n", val);
return -1;
}
dev->priv = (void *)&chip_ids[i];
return 0;
}
@ -406,10 +393,6 @@ static void ks8851_mll_enable(struct eth_device *dev)
static int ks8851_mll_init(struct eth_device *dev, bd_t *bd)
{
struct chip_id *id = dev->priv;
debug(DRIVERNAME ": detected %s controller\n", id->name);
if (ks_read_selftest(dev)) {
printf(DRIVERNAME ": Selftest failed\n");
return -1;