mwifiex: add calibration data download feature
User can provide a text file containing calibration data in hex
format while loading mwifiex module. It will be downloaded to
firmware.
eg. insmod mwifiex.ko cal_data_cfg=cal_data.conf
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/mwifiex/sta_cmd.c b/drivers/net/wireless/mwifiex/sta_cmd.c
index b193e25..8ece485 100644
--- a/drivers/net/wireless/mwifiex/sta_cmd.c
+++ b/drivers/net/wireless/mwifiex/sta_cmd.c
@@ -1134,6 +1134,55 @@
return 0;
}
+/* This function parse cal data from ASCII to hex */
+static u32 mwifiex_parse_cal_cfg(u8 *src, size_t len, u8 *dst)
+{
+ u8 *s = src, *d = dst;
+
+ while (s - src < len) {
+ if (*s && (isspace(*s) || *s == '\t')) {
+ s++;
+ continue;
+ }
+ if (isxdigit(*s)) {
+ *d++ = simple_strtol(s, NULL, 16);
+ s += 2;
+ } else {
+ s++;
+ }
+ }
+
+ return d - dst;
+}
+
+/* This function prepares command of set_cfg_data. */
+static int mwifiex_cmd_cfg_data(struct mwifiex_private *priv,
+ struct host_cmd_ds_command *cmd,
+ u16 cmd_action)
+{
+ struct host_cmd_ds_802_11_cfg_data *cfg_data = &cmd->params.cfg_data;
+ struct mwifiex_adapter *adapter = priv->adapter;
+ u32 len, cal_data_offset;
+ u8 *tmp_cmd = (u8 *)cmd;
+
+ cal_data_offset = S_DS_GEN + sizeof(*cfg_data);
+ if ((adapter->cal_data->data) && (adapter->cal_data->size > 0))
+ len = mwifiex_parse_cal_cfg((u8 *)adapter->cal_data->data,
+ adapter->cal_data->size,
+ (u8 *)(tmp_cmd + cal_data_offset));
+ else
+ return -1;
+
+ cfg_data->action = cpu_to_le16(cmd_action);
+ cfg_data->type = cpu_to_le16(CFG_DATA_TYPE_CAL);
+ cfg_data->data_len = cpu_to_le16(len);
+
+ cmd->command = cpu_to_le16(HostCmd_CMD_CFG_DATA);
+ cmd->size = cpu_to_le16(S_DS_GEN + sizeof(*cfg_data) + len);
+
+ return 0;
+}
+
/*
* This function prepares the commands before sending them to the firmware.
*
@@ -1152,6 +1201,9 @@
case HostCmd_CMD_GET_HW_SPEC:
ret = mwifiex_cmd_get_hw_spec(priv, cmd_ptr);
break;
+ case HostCmd_CMD_CFG_DATA:
+ ret = mwifiex_cmd_cfg_data(priv, cmd_ptr, cmd_action);
+ break;
case HostCmd_CMD_MAC_CONTROL:
ret = mwifiex_cmd_mac_control(priv, cmd_ptr, cmd_action,
data_buf);
@@ -1384,6 +1436,7 @@
*/
int mwifiex_sta_init_cmd(struct mwifiex_private *priv, u8 first_sta)
{
+ struct mwifiex_adapter *adapter = priv->adapter;
int ret;
u16 enable = true;
struct mwifiex_ds_11n_amsdu_aggr_ctrl amsdu_aggr_ctrl;
@@ -1404,6 +1457,15 @@
HostCmd_ACT_GEN_SET, 0, NULL);
if (ret)
return -1;
+
+ /* Download calibration data to firmware */
+ if (adapter->cal_data) {
+ ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_CFG_DATA,
+ HostCmd_ACT_GEN_SET, 0, NULL);
+ if (ret)
+ return -1;
+ }
+
/* Read MAC address from HW */
ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_GET_HW_SPEC,
HostCmd_ACT_GEN_GET, 0, NULL);