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apple-gmux: Obtain version info from indexed gmux

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This patch extracts and displays version information from the indexed
gmux device as it is also done for the classic gmux device.

Signed-off-by: Bernhard Froemel <froemel@vmars.tuwien.ac.at>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Bernhard Froemel 2012-08-25 10:30:49 +02:00 committed by Matthew Garrett
parent 5b716ac728
commit 07f377da7e
1 changed files with 8 additions and 4 deletions
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12
drivers/platform/x86/apple-gmux.c
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@ -461,18 +461,22 @@ static int __devinit gmux_probe(struct pnp_dev *pnp,
ver_release = gmux_read8(gmux_data, GMUX_PORT_VERSION_RELEASE);
if (ver_major == 0xff && ver_minor == 0xff && ver_release == 0xff) {
if (gmux_is_indexed(gmux_data)) {
u32 version;
mutex_init(&gmux_data->index_lock);
gmux_data->indexed = true;
version = gmux_read32(gmux_data,
GMUX_PORT_VERSION_MAJOR);
ver_major = (version >> 24) & 0xff;
ver_minor = (version >> 16) & 0xff;
ver_release = (version >> 8) & 0xff;
} else {
pr_info("gmux device not present\n");
ret = -ENODEV;
goto err_release;
}
pr_info("Found indexed gmux\n");
} else {
pr_info("Found gmux version %d.%d.%d\n", ver_major, ver_minor,
ver_release);
}
pr_info("Found gmux version %d.%d.%d [%s]\n", ver_major, ver_minor,
ver_release, (gmux_data->indexed ? "indexed" : "classic"));
memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_PLATFORM;