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wl1271: Add sysfs file to retrieve HW PG-version and ROM-version

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This patch reads the HW PG version (along with a ROM-version, embedded in the
same value) from the wl1271 hardware and publishes the value in a sysfs -file.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Juuso Oikarinen
2010-05-07 11:38:58 +03:00
committed by John W. Linville
parent 2ff6575b1e
commit d717fd6188
4 changed files with 51 additions and 0 deletions
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34
drivers/net/wireless/wl12xx/wl1271_main.c
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@ -2232,6 +2232,29 @@ static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
wl1271_sysfs_show_bt_coex_state,
wl1271_sysfs_store_bt_coex_state);
static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct wl1271 *wl = dev_get_drvdata(dev);
ssize_t len;
/* FIXME: what's the maximum length of buf? page size?*/
len = 500;
mutex_lock(&wl->mutex);
if (wl->hw_pg_ver >= 0)
len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
else
len = snprintf(buf, len, "n/a\n");
mutex_unlock(&wl->mutex);
return len;
}
static DEVICE_ATTR(hw_pg_ver, S_IRUGO | S_IWUSR,
wl1271_sysfs_show_hw_pg_ver, NULL);
int wl1271_register_hw(struct wl1271 *wl)
{
int ret;
@ -2351,6 +2374,7 @@ struct ieee80211_hw *wl1271_alloc_hw(void)
wl->vif = NULL;
wl->flags = 0;
wl->sg_enabled = true;
wl->hw_pg_ver = -1;
for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
wl->tx_frames[i] = NULL;
@ -2380,8 +2404,18 @@ struct ieee80211_hw *wl1271_alloc_hw(void)
goto err_platform;
}
/* Create sysfs file to get HW PG version */
ret = device_create_file(&wl->plat_dev->dev, &dev_attr_hw_pg_ver);
if (ret < 0) {
wl1271_error("failed to create sysfs file hw_pg_ver");
goto err_bt_coex_state;
}
return hw;
err_bt_coex_state:
device_remove_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
err_platform:
platform_device_unregister(wl->plat_dev);