wl18xx: add dynamic fw traces

add option to dynamically configure the fw
which debug traces to open

Signed-off-by: Guy Mishol <[e-mail]>
Signed-off-by: Eliad Peller <[e-mail]>
Signed-off-by: Kalle Valo <[e-mail]>

drivers/net/wireless/ti/wl18xx/acx.c

···
 	kfree(acx);
 	return ret;
 }
+
+int wl18xx_acx_dynamic_fw_traces(struct wl1271 *wl)
+{
+	struct acx_dynamic_fw_traces_cfg *acx;
+	int ret;
+
+	wl1271_debug(DEBUG_ACX, "acx dynamic fw traces config %d",
+		     wl->dynamic_fw_traces);
+
+	acx = kzalloc(sizeof(*acx), GFP_KERNEL);
+	if (!acx) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	acx->dynamic_fw_traces = cpu_to_le32(wl->dynamic_fw_traces);
+
+	ret = wl1271_cmd_configure(wl, ACX_DYNAMIC_TRACES_CFG,
+				   acx, sizeof(*acx));
+	if (ret < 0) {
+		wl1271_warning("acx config dynamic fw traces failed: %d", ret);
+		goto out;
+	}
+out:
+	kfree(acx);
+	return ret;
+}

drivers/net/wireless/ti/wl18xx/acx.h

···
 	ACX_PEER_CAP			 = 0x0056,
 	ACX_INTERRUPT_NOTIFY		 = 0x0057,
 	ACX_RX_BA_FILTER		 = 0x0058,
-	ACX_AP_SLEEP_CFG                 = 0x0059
+	ACX_AP_SLEEP_CFG                 = 0x0059,
+	ACX_DYNAMIC_TRACES_CFG		 = 0x005A,
 };
 
 /* numbers of bits the length field takes (add 1 for the actual number) */
···
 	u8 idle_conn_thresh;
 } __packed;
 
+/*
+ * ACX_DYNAMIC_TRACES_CFG
+ * configure the FW dynamic traces
+ */
+struct acx_dynamic_fw_traces_cfg {
+	struct acx_header header;
+	__le32 dynamic_fw_traces;
+} __packed;
+
 int wl18xx_acx_host_if_cfg_bitmap(struct wl1271 *wl, u32 host_cfg_bitmap,
 				  u32 sdio_blk_size, u32 extra_mem_blks,
 				  u32 len_field_size);
···
 int wl18xx_acx_interrupt_notify_config(struct wl1271 *wl, bool action);
 int wl18xx_acx_rx_ba_filter(struct wl1271 *wl, bool action);
 int wl18xx_acx_ap_sleep(struct wl1271 *wl);
+int wl18xx_acx_dynamic_fw_traces(struct wl1271 *wl);
 
 #endif /* __WL18XX_ACX_H__ */

drivers/net/wireless/ti/wl18xx/debugfs.c

···
 	.llseek = default_llseek,
 };
 
+static ssize_t dynamic_fw_traces_write(struct file *file,
+					const char __user *user_buf,
+					size_t count, loff_t *ppos)
+{
+	struct wl1271 *wl = file->private_data;
+	unsigned long value;
+	int ret;
+
+	ret = kstrtoul_from_user(user_buf, count, 0, &value);
+	if (ret < 0)
+		return ret;
+
+	mutex_lock(&wl->mutex);
+
+	wl->dynamic_fw_traces = value;
+
+	if (unlikely(wl->state != WLCORE_STATE_ON))
+		goto out;
+
+	ret = wl1271_ps_elp_wakeup(wl);
+	if (ret < 0)
+		goto out;
+
+	ret = wl18xx_acx_dynamic_fw_traces(wl);
+	if (ret < 0)
+		count = ret;
+
+	wl1271_ps_elp_sleep(wl);
+out:
+	mutex_unlock(&wl->mutex);
+	return count;
+}
+
+static ssize_t dynamic_fw_traces_read(struct file *file,
+					char __user *userbuf,
+					size_t count, loff_t *ppos)
+{
+	struct wl1271 *wl = file->private_data;
+	return wl1271_format_buffer(userbuf, count, ppos,
+				    "%d\n", wl->dynamic_fw_traces);
+}
+
+static const struct file_operations dynamic_fw_traces_ops = {
+	.read = dynamic_fw_traces_read,
+	.write = dynamic_fw_traces_write,
+	.open = simple_open,
+	.llseek = default_llseek,
+};
+
 int wl18xx_debugfs_add_files(struct wl1271 *wl,
 			     struct dentry *rootdir)
 {
···
 
 	DEBUGFS_ADD(conf, moddir);
 	DEBUGFS_ADD(radar_detection, moddir);
+	DEBUGFS_ADD(dynamic_fw_traces, moddir);
 
 	return 0;
 

drivers/net/wireless/ti/wl18xx/main.c

···
 	if (ret < 0)
 		return ret;
 
+	/* set the dynamic fw traces bitmap */
+	ret = wl18xx_acx_dynamic_fw_traces(wl);
+	if (ret < 0)
+		return ret;
+
 	if (checksum_param) {
 		ret = wl18xx_acx_set_checksum_state(wl);
 		if (ret != 0)

drivers/net/wireless/ti/wlcore/wlcore.h

···
 	/* interface combinations supported by the hw */
 	const struct ieee80211_iface_combination *iface_combinations;
 	u8 n_iface_combinations;
+
+	/* dynamic fw traces */
+	u32 dynamic_fw_traces;
 };
 
 int wlcore_probe(struct wl1271 *wl, struct platform_device *pdev);