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board: gazerbeam: Fix SC detection

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The single channel detection in the gazerbeam board driver was not
implemented correctly.

Fix the detection.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
This commit is contained in:
Mario Six 2019-03-29 10:18:16 +01:00
parent 33534526ec
commit 9638879cba
1 changed files with 12 additions and 10 deletions
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22
drivers/board/gazerbeam.c
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@ -61,7 +61,7 @@ static int _read_board_variant_data(struct udevice *dev)
struct udevice *i2c_bus;
struct udevice *dummy;
char *listname;
int mc4, mc2, sc, con;
int mc4, mc2, sc, mc2_sc, con;
int gpio_num;
int res;
@ -78,16 +78,16 @@ static int _read_board_variant_data(struct udevice *dev)
return -EIO;
}
mc2 = !dm_i2c_probe(i2c_bus, MC2_EXPANDER_ADDR, 0, &dummy);
mc2_sc = !dm_i2c_probe(i2c_bus, MC2_EXPANDER_ADDR, 0, &dummy);
mc4 = !dm_i2c_probe(i2c_bus, MC4_EXPANDER_ADDR, 0, &dummy);
if (mc2 && mc4) {
if (mc2_sc && mc4) {
debug("%s: Board hardware configuration inconsistent.\n",
dev->name);
return -EINVAL;
}
listname = mc2 ? "var-gpios-mc2" : "var-gpios-mc4";
listname = mc2_sc ? "var-gpios-mc2" : "var-gpios-mc4";
gpio_num = gpio_request_list_by_name(dev, listname, priv->var_gpios,
ARRAY_SIZE(priv->var_gpios),
@ -105,12 +105,7 @@ static int _read_board_variant_data(struct udevice *dev)
return sc;
}
con = dm_gpio_get_value(&priv->var_gpios[CON_GPIO_NO]);
if (con < 0) {
debug("%s: Error while reading 'con' GPIO (err = %d)",
dev->name, con);
return con;
}
mc2 = mc2_sc ? (sc ? 0 : 1) : 0;
if ((sc && mc2) || (sc && mc4) || (!sc && !mc2 && !mc4)) {
debug("%s: Board hardware configuration inconsistent.\n",
@ -118,6 +113,13 @@ static int _read_board_variant_data(struct udevice *dev)
return -EINVAL;
}
con = dm_gpio_get_value(&priv->var_gpios[CON_GPIO_NO]);
if (con < 0) {
debug("%s: Error while reading 'con' GPIO (err = %d)",
dev->name, con);
return con;
}
priv->variant = con ? VAR_CON : VAR_CPU;
priv->multichannel = mc4 ? 4 : (mc2 ? 2 : (sc ? 1 : 0));