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i2c: muxes: pca954x: look up width from chip_desc

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Commit 8e6eda7cda ("drivers/i2c/muxes/pca954x: Add pca9547 I2C mux
support") introduced a chip_desc for the pca954x devices but failed to
update pca954x_ofdata_to_platdata() to be aware of it. Make
pca954x_ofdata_to_platdata() lookup the chip_desc to validate the device
width.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Marek Behun <marek.behun@nic.cz>
This commit is contained in:
Chris Packham 2017-09-29 10:53:36 +13:00 committed by Heiko Schocher
parent 45c9d96ae4
commit 5bc90a8953
1 changed files with 6 additions and 1 deletions
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7
drivers/i2c/muxes/pca954x.c
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@ -27,6 +27,7 @@ struct chip_desc {
pca954x_ismux = 0,
pca954x_isswi,
} muxtype;
u32 width;
};
struct pca954x_priv {
@ -39,14 +40,17 @@ static const struct chip_desc chips[] = {
[PCA9544] = {
.enable = 0x4,
.muxtype = pca954x_ismux,
.width = 4,
},
[PCA9547] = {
.enable = 0x8,
.muxtype = pca954x_ismux,
.width = 8,
},
[PCA9548] = {
.enable = 0x8,
.muxtype = pca954x_isswi,
.width = 8,
},
};
@ -89,13 +93,14 @@ static const struct udevice_id pca954x_ids[] = {
static int pca954x_ofdata_to_platdata(struct udevice *dev)
{
struct pca954x_priv *priv = dev_get_priv(dev);
const struct chip_desc *chip = &chips[dev_get_driver_data(dev)];
priv->addr = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), "reg", 0);
if (!priv->addr) {
debug("MUX not found\n");
return -ENODEV;
}
priv->width = dev_get_driver_data(dev);
priv->width = chip->width;
if (!priv->width) {
debug("No I2C MUX width specified\n");