From d717fd6188b2ea63cf9dc0a870fd312c312841cd Mon Sep 17 00:00:00 2001 From: Juuso Oikarinen Date: Fri, 7 May 2010 11:38:58 +0300 Subject: [PATCH] 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 Reviewed-by: Luciano Coelho Signed-off-by: Luciano Coelho Signed-off-by: John W. Linville --- drivers/net/wireless/wl12xx/wl1271.h | 2 ++ drivers/net/wireless/wl12xx/wl1271_boot.c | 12 +++++++++++ drivers/net/wireless/wl12xx/wl1271_boot.h | 3 +++ drivers/net/wireless/wl12xx/wl1271_main.c | 34 +++++++++++++++++++++++++++++++ 4 files changed, 51 insertions(+) diff --git a/drivers/net/wireless/wl12xx/wl1271.h b/drivers/net/wireless/wl12xx/wl1271.h index 75887e7..3e1769d 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 7e79715..139a1e0 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 95ecc52..f829699 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 b083725..36dfdee 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); -- 2.7.4