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authorJuuso Oikarinen <juuso.oikarinen@nokia.com>2010-05-07 11:38:58 +0300
committerJohn W. Linville <linville@tuxdriver.com>2010-05-07 14:57:18 -0400
commitd717fd6188b2ea63cf9dc0a870fd312c312841cd (patch)
tree428410070c7ce5aa36f699939344bb3267ad9eed /drivers
parent2ff6575b1e497f88acf2c7de7e1ba015267b689d (diff)
wl1271: Add sysfs file to retrieve HW PG-version and ROM-version
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/wl12xx/wl1271.h2
-rw-r--r--drivers/net/wireless/wl12xx/wl1271_boot.c12
-rw-r--r--drivers/net/wireless/wl12xx/wl1271_boot.h3
-rw-r--r--drivers/net/wireless/wl12xx/wl1271_main.c34
4 files changed, 51 insertions, 0 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1271.h b/drivers/net/wireless/wl12xx/wl1271.h
index 75887e74205..3e1769dd1b5 100644
--- a/drivers/net/wireless/wl12xx/wl1271.h
+++ b/drivers/net/wireless/wl12xx/wl1271.h
@@ -388,6 +388,8 @@ struct wl1271 {
size_t fw_len;
struct wl1271_nvs_file *nvs;
+ s8 hw_pg_ver;
+
u8 bssid[ETH_ALEN];
u8 mac_addr[ETH_ALEN];
u8 bss_type;
diff --git a/drivers/net/wireless/wl12xx/wl1271_boot.c b/drivers/net/wireless/wl12xx/wl1271_boot.c
index 7e797157783..139a1e0fc7e 100644
--- a/drivers/net/wireless/wl12xx/wl1271_boot.c
+++ b/drivers/net/wireless/wl12xx/wl1271_boot.c
@@ -440,11 +440,23 @@ static int wl1271_boot_write_irq_polarity(struct wl1271 *wl)
return 0;
}
+static void wl1271_boot_hw_version(struct wl1271 *wl)
+{
+ u32 fuse;
+
+ fuse = wl1271_top_reg_read(wl, REG_FUSE_DATA_2_1);
+ fuse = (fuse & PG_VER_MASK) >> PG_VER_OFFSET;
+
+ wl->hw_pg_ver = (s8)fuse;
+}
+
int wl1271_boot(struct wl1271 *wl)
{
int ret = 0;
u32 tmp, clk, pause;
+ wl1271_boot_hw_version(wl);
+
if (REF_CLOCK == 0 || REF_CLOCK == 2 || REF_CLOCK == 4)
/* ref clk: 19.2/38.4/38.4-XTAL */
clk = 0x3;
diff --git a/drivers/net/wireless/wl12xx/wl1271_boot.h b/drivers/net/wireless/wl12xx/wl1271_boot.h
index 95ecc524195..f829699d597 100644
--- a/drivers/net/wireless/wl12xx/wl1271_boot.h
+++ b/drivers/net/wireless/wl12xx/wl1271_boot.h
@@ -55,6 +55,9 @@ struct wl1271_static_data {
#define OCP_REG_CLK_POLARITY 0x0cb2
#define OCP_REG_CLK_PULL 0x0cb4
+#define REG_FUSE_DATA_2_1 0x050a
+#define PG_VER_MASK 0x3c
+#define PG_VER_OFFSET 2
#define CMD_MBOX_ADDRESS 0x407B4
diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index b0837255de6..36dfdee5fbf 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -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);