From: Ping-Ke Shih <pks...@realtek.com>

Use debugfs to dump register and btcoex status.

We create topdir in /sys/kernel/debug/rtlwifi/, and use the MAC address
as subdirectory with several entries to dump mac_reg, bb_reg, rf_reg etc.
An example is
    /sys/kernel/debug/rtlwifi/00-11-22-33-44-55-66/mac_0

This change permits examination of device registers in a dynamic manner,
a feature not available with the current debug mechanism.

Signed-off-by: Ping-Ke Shih <pks...@realtek.com>
Signed-off-by: Larry Finger <larry.fin...@lwfinger.net>
Cc: Yan-Hsuan Chuang <yhchu...@realtek.com>
Cc: Birming Chiu <birm...@realtek.com>
Cc: Shaofu <sha...@realtek.com>
Cc: Steven Ting <stevent...@realtek.com>
---
v2 - Use simple_open() rather than a local routine as suggested by the kbuild 
test robot.
     The commit message has been rewritten.
---
 drivers/net/wireless/realtek/rtlwifi/base.c        |   6 +
 .../realtek/rtlwifi/btcoexist/halbtcoutsrc.c       |   3 +-
 .../realtek/rtlwifi/btcoexist/halbtcoutsrc.h       |   3 +-
 .../wireless/realtek/rtlwifi/btcoexist/rtl_btc.c   |   6 +
 .../wireless/realtek/rtlwifi/btcoexist/rtl_btc.h   |   1 +
 drivers/net/wireless/realtek/rtlwifi/debug.c       | 439 +++++++++++++++++++++
 drivers/net/wireless/realtek/rtlwifi/debug.h       |  12 +
 drivers/net/wireless/realtek/rtlwifi/pci.c         |   6 +
 drivers/net/wireless/realtek/rtlwifi/wifi.h        |   9 +
 9 files changed, 483 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/base.c 
b/drivers/net/wireless/realtek/rtlwifi/base.c
index ea18aa7afecb..b6ed4d1e650a 100644
--- a/drivers/net/wireless/realtek/rtlwifi/base.c
+++ b/drivers/net/wireless/realtek/rtlwifi/base.c
@@ -2450,6 +2450,9 @@ static int __init rtl_core_module_init(void)
        if (rtl_rate_control_register())
                pr_err("rtl: Unable to register rtl_rc, use default RC !!\n");
 
+       /* add debugfs */
+       rtl_debugfs_add_topdir();
+
        /* init some global vars */
        INIT_LIST_HEAD(&rtl_global_var.glb_priv_list);
        spin_lock_init(&rtl_global_var.glb_list_lock);
@@ -2461,6 +2464,9 @@ static void __exit rtl_core_module_exit(void)
 {
        /*RC*/
        rtl_rate_control_unregister();
+
+       /* remove debugfs */
+       rtl_debugfs_remove_topdir();
 }
 
 module_init(rtl_core_module_init);
diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c 
b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c
index c1eacd8352a2..e4f0d4710fb4 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c
@@ -1504,7 +1504,8 @@ void exhalbtc_set_single_ant_path(u8 single_ant_path)
        gl_bt_coexist.board_info.single_ant_path = single_ant_path;
 }
 
-void exhalbtc_display_bt_coex_info(struct btc_coexist *btcoexist)
+void exhalbtc_display_bt_coex_info(struct btc_coexist *btcoexist,
+                                  struct seq_file *m)
 {
        if (!halbtc_is_bt_coexist_available(btcoexist))
                return;
diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.h 
b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.h
index f9b87c12db09..53aeb669cc63 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.h
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.h
@@ -626,7 +626,8 @@ void exhalbtc_update_min_bt_rssi(s8 bt_rssi);
 void exhalbtc_set_bt_exist(bool bt_exist);
 void exhalbtc_set_chip_type(u8 chip_type);
 void exhalbtc_set_ant_num(struct rtl_priv *rtlpriv, u8 type, u8 ant_num);
-void exhalbtc_display_bt_coex_info(struct btc_coexist *btcoexist);
+void exhalbtc_display_bt_coex_info(struct btc_coexist *btcoexist,
+                                  struct seq_file *m);
 void exhalbtc_signal_compensation(struct btc_coexist *btcoexist,
                                  u8 *rssi_wifi, u8 *rssi_bt);
 void exhalbtc_lps_leave(struct btc_coexist *btcoexist);
diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/rtl_btc.c 
b/drivers/net/wireless/realtek/rtlwifi/btcoexist/rtl_btc.c
index 7d296a401b6f..4d9e33078d4f 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/rtl_btc.c
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/rtl_btc.c
@@ -52,8 +52,14 @@ static struct rtl_btc_ops rtl_btc_operation = {
        .btc_is_bt_ctrl_lps = rtl_btc_is_bt_ctrl_lps,
        .btc_is_bt_lps_on = rtl_btc_is_bt_lps_on,
        .btc_get_ampdu_cfg = rtl_btc_get_ampdu_cfg,
+       .btc_display_bt_coex_info = rtl_btc_display_bt_coex_info,
 };
 
+void rtl_btc_display_bt_coex_info(struct rtl_priv *rtlpriv, struct seq_file *m)
+{
+       exhalbtc_display_bt_coex_info(&gl_bt_coexist, m);
+}
+
 void rtl_btc_record_pwr_mode(struct rtl_priv *rtlpriv, u8 *buf, u8 len)
 {
        u8 safe_len;
diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/rtl_btc.h 
b/drivers/net/wireless/realtek/rtlwifi/btcoexist/rtl_btc.h
index ac1253c46f44..40f1ce8c8a06 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/rtl_btc.h
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/rtl_btc.h
@@ -44,6 +44,7 @@ bool rtl_btc_is_limited_dig(struct rtl_priv *rtlpriv);
 bool rtl_btc_is_disable_edca_turbo(struct rtl_priv *rtlpriv);
 bool rtl_btc_is_bt_disabled(struct rtl_priv *rtlpriv);
 void rtl_btc_special_packet_notify(struct rtl_priv *rtlpriv, u8 pkt_type);
+void rtl_btc_display_bt_coex_info(struct rtl_priv *rtlpriv, struct seq_file 
*m);
 void rtl_btc_record_pwr_mode(struct rtl_priv *rtlpriv, u8 *buf, u8 len);
 u8   rtl_btc_get_lps_val(struct rtl_priv *rtlpriv);
 u8   rtl_btc_get_rpwm_val(struct rtl_priv *rtlpriv);
diff --git a/drivers/net/wireless/realtek/rtlwifi/debug.c 
b/drivers/net/wireless/realtek/rtlwifi/debug.c
index 38fef6dbb44b..335ef0f21083 100644
--- a/drivers/net/wireless/realtek/rtlwifi/debug.c
+++ b/drivers/net/wireless/realtek/rtlwifi/debug.c
@@ -23,8 +23,10 @@
  *****************************************************************************/
 
 #include "wifi.h"
+#include "cam.h"
 
 #include <linux/moduleparam.h>
+#include <linux/vmalloc.h>
 
 #ifdef CONFIG_RTLWIFI_DEBUG
 void _rtl_dbg_trace(struct rtl_priv *rtlpriv, u64 comp, int level,
@@ -81,4 +83,441 @@ void _rtl_dbg_print_data(struct rtl_priv *rtlpriv, u64 
comp, int level,
 }
 EXPORT_SYMBOL_GPL(_rtl_dbg_print_data);
 
+struct rtl_debgufs_priv {
+       struct rtl_priv *rtlpriv;
+       int (*cb)(struct seq_file *m, void *v);
+       u32 cb_data;
+};
+
+static struct dentry *debugfs_topdir;
+
+static int rtl_debug_get_common(struct seq_file *m, void *v)
+{
+       struct rtl_debgufs_priv *debugfs_priv = m->private;
+
+       return debugfs_priv->cb(m, v);
+}
+
+static int dl_debug_open_common(struct inode *inode, struct file *file)
+{
+       return single_open(file, rtl_debug_get_common, inode->i_private);
+}
+
+static const struct file_operations file_ops_common = {
+       .open = dl_debug_open_common,
+       .read = seq_read,
+       .llseek = seq_lseek,
+       .release = seq_release,
+};
+
+static int rtl_debug_get_mac_page(struct seq_file *m, void *v)
+{
+       struct rtl_debgufs_priv *debugfs_priv = m->private;
+       struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
+       u32 page = debugfs_priv->cb_data;
+       int i, n;
+       int max = 0xff;
+
+       for (n = 0; n <= max; ) {
+               seq_printf(m, "\n%8.8x  ", n + page);
+               for (i = 0; i < 4 && n <= max; i++, n += 4)
+                       seq_printf(m, "%8.8x    ",
+                                  rtl_read_dword(rtlpriv, (page | n)));
+       }
+       seq_puts(m, "\n");
+       return 0;
+}
+
+#define RTL_DEBUG_IMPL_MAC_SERIES(page, addr)          \
+struct rtl_debgufs_priv rtl_debug_priv_mac_ ##page = { \
+       .cb = rtl_debug_get_mac_page,                   \
+       .cb_data = addr,                                \
+}
+
+RTL_DEBUG_IMPL_MAC_SERIES(0, 0x0000);
+RTL_DEBUG_IMPL_MAC_SERIES(1, 0x0100);
+RTL_DEBUG_IMPL_MAC_SERIES(2, 0x0200);
+RTL_DEBUG_IMPL_MAC_SERIES(3, 0x0300);
+RTL_DEBUG_IMPL_MAC_SERIES(4, 0x0400);
+RTL_DEBUG_IMPL_MAC_SERIES(5, 0x0500);
+RTL_DEBUG_IMPL_MAC_SERIES(6, 0x0600);
+RTL_DEBUG_IMPL_MAC_SERIES(7, 0x0700);
+RTL_DEBUG_IMPL_MAC_SERIES(10, 0x1000);
+RTL_DEBUG_IMPL_MAC_SERIES(11, 0x1100);
+RTL_DEBUG_IMPL_MAC_SERIES(12, 0x1200);
+RTL_DEBUG_IMPL_MAC_SERIES(13, 0x1300);
+RTL_DEBUG_IMPL_MAC_SERIES(14, 0x1400);
+RTL_DEBUG_IMPL_MAC_SERIES(15, 0x1500);
+RTL_DEBUG_IMPL_MAC_SERIES(16, 0x1600);
+RTL_DEBUG_IMPL_MAC_SERIES(17, 0x1700);
+
+static int rtl_debug_get_bb_page(struct seq_file *m, void *v)
+{
+       struct rtl_debgufs_priv *debugfs_priv = m->private;
+       struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
+       struct ieee80211_hw *hw = rtlpriv->hw;
+       u32 page = debugfs_priv->cb_data;
+       int i, n;
+       int max = 0xff;
+
+       for (n = 0; n <= max; ) {
+               seq_printf(m, "\n%8.8x  ", n + page);
+               for (i = 0; i < 4 && n <= max; i++, n += 4)
+                       seq_printf(m, "%8.8x    ",
+                                  rtl_get_bbreg(hw, (page | n), 0xffffffff));
+       }
+       seq_puts(m, "\n");
+       return 0;
+}
+
+#define RTL_DEBUG_IMPL_BB_SERIES(page, addr)           \
+struct rtl_debgufs_priv rtl_debug_priv_bb_ ##page = {  \
+       .cb = rtl_debug_get_bb_page,                    \
+       .cb_data = addr,                                \
+}
+
+RTL_DEBUG_IMPL_BB_SERIES(8, 0x0800);
+RTL_DEBUG_IMPL_BB_SERIES(9, 0x0900);
+RTL_DEBUG_IMPL_BB_SERIES(a, 0x0a00);
+RTL_DEBUG_IMPL_BB_SERIES(b, 0x0b00);
+RTL_DEBUG_IMPL_BB_SERIES(c, 0x0c00);
+RTL_DEBUG_IMPL_BB_SERIES(d, 0x0d00);
+RTL_DEBUG_IMPL_BB_SERIES(e, 0x0e00);
+RTL_DEBUG_IMPL_BB_SERIES(f, 0x0f00);
+RTL_DEBUG_IMPL_BB_SERIES(18, 0x1800);
+RTL_DEBUG_IMPL_BB_SERIES(19, 0x1900);
+RTL_DEBUG_IMPL_BB_SERIES(1a, 0x1a00);
+RTL_DEBUG_IMPL_BB_SERIES(1b, 0x1b00);
+RTL_DEBUG_IMPL_BB_SERIES(1c, 0x1c00);
+RTL_DEBUG_IMPL_BB_SERIES(1d, 0x1d00);
+RTL_DEBUG_IMPL_BB_SERIES(1e, 0x1e00);
+RTL_DEBUG_IMPL_BB_SERIES(1f, 0x1f00);
+
+static int rtl_debug_get_reg_rf(struct seq_file *m, void *v)
+{
+       struct rtl_debgufs_priv *debugfs_priv = m->private;
+       struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
+       struct ieee80211_hw *hw = rtlpriv->hw;
+       enum radio_path rfpath = debugfs_priv->cb_data;
+       int i, n;
+       int max = 0x40;
+
+       if (IS_HARDWARE_TYPE_8822B(rtlpriv))
+               max = 0xff;
+
+       seq_printf(m, "\nPATH(%d)", rfpath);
+
+       for (n = 0; n <= max; ) {
+               seq_printf(m, "\n%8.8x  ", n);
+               for (i = 0; i < 4 && n <= max; n += 1, i++)
+                       seq_printf(m, "%8.8x    ",
+                                  rtl_get_rfreg(hw, rfpath, n, 0xffffffff));
+       }
+       seq_puts(m, "\n");
+       return 0;
+}
+
+#define RTL_DEBUG_IMPL_RF_SERIES(page, addr)           \
+struct rtl_debgufs_priv rtl_debug_priv_rf_ ##page = {  \
+       .cb = rtl_debug_get_reg_rf,                     \
+       .cb_data = addr,                                \
+}
+
+RTL_DEBUG_IMPL_RF_SERIES(a, RF90_PATH_A);
+RTL_DEBUG_IMPL_RF_SERIES(b, RF90_PATH_B);
+
+static int rtl_debug_get_cam_register(struct seq_file *m, void *v)
+{
+       struct rtl_debgufs_priv *debugfs_priv = m->private;
+       struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
+       int start = debugfs_priv->cb_data;
+       u32 target_cmd = 0;
+       u32 target_val = 0;
+       u8 entry_i = 0;
+       u32 ulstatus;
+       int i = 100, j = 0;
+       int end = (start + 11 > TOTAL_CAM_ENTRY ? TOTAL_CAM_ENTRY : start + 11);
+
+       /* This dump the current register page */
+       seq_printf(m,
+                  "\n#################### SECURITY CAM (%d-%d) 
##################\n",
+                  start, end - 1);
+
+       for (j = start; j < end; j++) {
+               seq_printf(m, "\nD:  %2x > ", j);
+               for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
+                       /* polling bit, and No Write enable, and address  */
+                       target_cmd = entry_i + CAM_CONTENT_COUNT * j;
+                       target_cmd = target_cmd | BIT(31);
+
+                       /* Check polling bit is clear */
+                       while ((i--) >= 0) {
+                               ulstatus = rtl_read_dword(
+                                               rtlpriv,
+                                               rtlpriv->cfg->maps[RWCAM]);
+                               if (ulstatus & BIT(31))
+                                       continue;
+                               else
+                                       break;
+                       }
+
+                       rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
+                                       target_cmd);
+                       target_val = rtl_read_dword(rtlpriv,
+                                                   rtlpriv->cfg->maps[RCAMO]);
+                       seq_printf(m, "%8.8x ", target_val);
+               }
+       }
+       seq_puts(m, "\n");
+       return 0;
+}
+
+#define RTL_DEBUG_IMPL_CAM_SERIES(page, addr)          \
+struct rtl_debgufs_priv rtl_debug_priv_cam_ ##page = { \
+       .cb = rtl_debug_get_cam_register,       \
+       .cb_data = addr,                                \
+}
+
+RTL_DEBUG_IMPL_CAM_SERIES(1, 0);
+RTL_DEBUG_IMPL_CAM_SERIES(2, 11);
+RTL_DEBUG_IMPL_CAM_SERIES(3, 22);
+
+static int rtl_debug_get_btcoex(struct seq_file *m, void *v)
+{
+       struct rtl_debgufs_priv *debugfs_priv = m->private;
+       struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
+
+       if (rtlpriv->cfg->ops->get_btc_status())
+               rtlpriv->btcoexist.btc_ops->btc_display_bt_coex_info(rtlpriv,
+                                                                    m);
+
+       seq_puts(m, "\n");
+
+       return 0;
+}
+
+static struct rtl_debgufs_priv rtl_debug_priv_btcoex = {
+       .cb = rtl_debug_get_btcoex,
+       .cb_data = 0,
+};
+
+static ssize_t rtl_debugfs_set_write_reg(struct file *filp,
+                                        const char __user *buffer,
+                                        size_t count, loff_t *loff)
+{
+       struct rtl_debgufs_priv *debugfs_priv = filp->private_data;
+       struct rtl_priv *rtlpriv = debugfs_priv->rtlpriv;
+       struct ieee80211_hw *hw = rtlpriv->hw;
+       char tmp[32 + 1];
+       int tmp_len;
+       u32 addr, val, len;
+       int num;
+
+       if (count < 3) {
+               /*printk("argument size is less than 3\n");*/
+               return -EFAULT;
+       }
+
+       tmp_len = (count > sizeof(tmp) - 1 ? sizeof(tmp) - 1 : count);
+
+       if (!buffer || copy_from_user(tmp, buffer, tmp_len))
+               return count;
+
+       tmp[tmp_len] = '\0';
+
+       /* write H2C */
+       if (!strncmp(tmp, "h2c", 3)) {
+               u8 h2c_len, h2c_data_packed[8];
+               int h2c_data[8];        /* idx 0: cmd */
+               int i;
+
+               h2c_len = sscanf(tmp + 3, "%X %X %X %X %X %X %X %X",
+                                &h2c_data[0], &h2c_data[1],
+                                &h2c_data[2], &h2c_data[3],
+                                &h2c_data[4], &h2c_data[5],
+                                &h2c_data[6], &h2c_data[7]);
+
+               if (h2c_len <= 0)
+                       return count;
+
+               for (i = 0; i < h2c_len; i++)
+                       h2c_data_packed[i] = (u8)h2c_data[i];
+
+               rtlpriv->cfg->ops->fill_h2c_cmd(hw, h2c_data_packed[0],
+                                               h2c_len - 1,
+                                               &h2c_data_packed[1]);
+
+               return count;
+       }
+
+       /* write RF register */
+       if (!strncmp(tmp, "rf", 2)) {
+               int path;
+               u32 addr, bitmask, data;
+
+               num = sscanf(tmp + 2, "%X %X %X %X",
+                            &path, &addr, &bitmask, &data);
+
+               if (num != 4) {
+                       RT_TRACE(rtlpriv, COMP_ERR, DBG_DMESG,
+                                "Format is <path> <addr> <mask> <data>\n");
+                       return count;
+               }
+
+               rtl_set_rfreg(hw, path, addr, bitmask, data);
+
+               return count;
+       }
+
+       /* write BB/MAC register */
+       num  = sscanf(tmp, "%x %x %x", &addr, &val, &len);
+
+       if (num !=  3) {
+               /*printk("invalid write_reg parameter!\n");*/
+               return count;
+       }
+
+       switch (len) {
+       case 1:
+               rtl_write_byte(rtlpriv, addr, (u8)val);
+               break;
+       case 2:
+               rtl_write_word(rtlpriv, addr, (u16)val);
+               break;
+       case 4:
+               rtl_write_dword(rtlpriv, addr, val);
+               break;
+       default:
+               /*printk("error write length=%d", len);*/
+               break;
+       }
+
+       return count;
+}
+
+static int rtl_debugfs_open(struct inode *inode, struct file *filp)
+{
+       filp->private_data = inode->i_private;
+
+       return 0;
+}
+
+static int rtl_debugfs_close(struct inode *inode, struct file *filp)
+{
+       return 0;
+}
+
+static struct rtl_debgufs_priv rtl_debug_priv_write_reg = {
+       .cb = NULL,
+       .cb_data = 0,
+};
+
+static const struct file_operations file_ops_write_reg = {
+       .owner = THIS_MODULE,
+       .write = rtl_debugfs_set_write_reg,
+       .open = rtl_debugfs_open,
+       .release = rtl_debugfs_close,
+};
+
+#define RTL_DEBUGFS_ADD_CORE(name, mode, fopname)                         \
+       do {                                                               \
+               rtl_debug_priv_ ##name.rtlpriv = rtlpriv;                  \
+               if (!debugfs_create_file(#name, mode,                      \
+                                        parent, &rtl_debug_priv_ ##name,  \
+                                        &file_ops_ ##fopname))            \
+                       pr_err("Unable to initialize debugfs:%s/%s\n",     \
+                              rtlpriv->dbg.debugfs_name,                  \
+                              #name);                                     \
+       } while (0)
+
+#define RTL_DEBUGFS_ADD(name)                                             \
+               RTL_DEBUGFS_ADD_CORE(name, S_IFREG | 0444, common)
+#define RTL_DEBUGFS_ADD_W(name)                                                
   \
+               RTL_DEBUGFS_ADD_CORE(name, S_IFREG | 0222, write_reg)
+
+void rtl_debug_add_one(struct ieee80211_hw *hw)
+{
+       struct rtl_priv *rtlpriv = rtl_priv(hw);
+       struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
+       struct dentry *parent;
+
+       snprintf(rtlpriv->dbg.debugfs_name, 18, "%02x-%02x-%02x-%02x-%02x-%02x",
+                rtlefuse->dev_addr[0], rtlefuse->dev_addr[1],
+                rtlefuse->dev_addr[2], rtlefuse->dev_addr[3],
+                rtlefuse->dev_addr[4], rtlefuse->dev_addr[5]);
+
+       rtlpriv->dbg.debugfs_dir =
+               debugfs_create_dir(rtlpriv->dbg.debugfs_name, debugfs_topdir);
+       if (!rtlpriv->dbg.debugfs_dir) {
+               pr_err("Unable to init debugfs:/%s/%s\n", rtlpriv->cfg->name,
+                      rtlpriv->dbg.debugfs_name);
+               return;
+       }
+
+       parent = rtlpriv->dbg.debugfs_dir;
+
+       RTL_DEBUGFS_ADD(mac_0);
+       RTL_DEBUGFS_ADD(mac_1);
+       RTL_DEBUGFS_ADD(mac_2);
+       RTL_DEBUGFS_ADD(mac_3);
+       RTL_DEBUGFS_ADD(mac_4);
+       RTL_DEBUGFS_ADD(mac_5);
+       RTL_DEBUGFS_ADD(mac_6);
+       RTL_DEBUGFS_ADD(mac_7);
+       RTL_DEBUGFS_ADD(bb_8);
+       RTL_DEBUGFS_ADD(bb_9);
+       RTL_DEBUGFS_ADD(bb_a);
+       RTL_DEBUGFS_ADD(bb_b);
+       RTL_DEBUGFS_ADD(bb_c);
+       RTL_DEBUGFS_ADD(bb_d);
+       RTL_DEBUGFS_ADD(bb_e);
+       RTL_DEBUGFS_ADD(bb_f);
+       RTL_DEBUGFS_ADD(mac_10);
+       RTL_DEBUGFS_ADD(mac_11);
+       RTL_DEBUGFS_ADD(mac_12);
+       RTL_DEBUGFS_ADD(mac_13);
+       RTL_DEBUGFS_ADD(mac_14);
+       RTL_DEBUGFS_ADD(mac_15);
+       RTL_DEBUGFS_ADD(mac_16);
+       RTL_DEBUGFS_ADD(mac_17);
+       RTL_DEBUGFS_ADD(bb_18);
+       RTL_DEBUGFS_ADD(bb_19);
+       RTL_DEBUGFS_ADD(bb_1a);
+       RTL_DEBUGFS_ADD(bb_1b);
+       RTL_DEBUGFS_ADD(bb_1c);
+       RTL_DEBUGFS_ADD(bb_1d);
+       RTL_DEBUGFS_ADD(bb_1e);
+       RTL_DEBUGFS_ADD(bb_1f);
+       RTL_DEBUGFS_ADD(rf_a);
+       RTL_DEBUGFS_ADD(rf_b);
+
+       RTL_DEBUGFS_ADD(cam_1);
+       RTL_DEBUGFS_ADD(cam_2);
+       RTL_DEBUGFS_ADD(cam_3);
+
+       RTL_DEBUGFS_ADD(btcoex);
+
+       RTL_DEBUGFS_ADD_W(write_reg);
+}
+EXPORT_SYMBOL_GPL(rtl_debug_add_one);
+
+void rtl_debug_remove_one(struct ieee80211_hw *hw)
+{
+       struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+       debugfs_remove_recursive(rtlpriv->dbg.debugfs_dir);
+       rtlpriv->dbg.debugfs_dir = NULL;
+}
+EXPORT_SYMBOL_GPL(rtl_debug_remove_one);
+
+void rtl_debugfs_add_topdir(void)
+{
+       debugfs_topdir = debugfs_create_dir("rtlwifi", NULL);
+}
+
+void rtl_debugfs_remove_topdir(void)
+{
+       debugfs_remove_recursive(debugfs_topdir);
+}
+
 #endif
diff --git a/drivers/net/wireless/realtek/rtlwifi/debug.h 
b/drivers/net/wireless/realtek/rtlwifi/debug.h
index 947718001457..ad6834af618b 100644
--- a/drivers/net/wireless/realtek/rtlwifi/debug.h
+++ b/drivers/net/wireless/realtek/rtlwifi/debug.h
@@ -219,4 +219,16 @@ static inline void RT_PRINT_DATA(struct rtl_priv *rtlpriv,
 }
 
 #endif
+
+#ifdef CONFIG_RTLWIFI_DEBUG
+void rtl_debug_add_one(struct ieee80211_hw *hw);
+void rtl_debug_remove_one(struct ieee80211_hw *hw);
+void rtl_debugfs_add_topdir(void);
+void rtl_debugfs_remove_topdir(void);
+#else
+#define rtl_debug_add_one(hw)
+#define rtl_debug_remove_one(hw)
+#define rtl_debugfs_add_topdir()
+#define rtl_debugfs_remove_topdir()
+#endif
 #endif
diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c 
b/drivers/net/wireless/realtek/rtlwifi/pci.c
index 08dc8919ef60..18112dddd706 100644
--- a/drivers/net/wireless/realtek/rtlwifi/pci.c
+++ b/drivers/net/wireless/realtek/rtlwifi/pci.c
@@ -2298,6 +2298,9 @@ int rtl_pci_probe(struct pci_dev *pdev,
        }
        rtlpriv->mac80211.mac80211_registered = 1;
 
+       /* add for debug */
+       rtl_debug_add_one(hw);
+
        /*init rfkill */
        rtl_init_rfkill(hw);    /* Init PCI sw */
 
@@ -2347,6 +2350,9 @@ void rtl_pci_disconnect(struct pci_dev *pdev)
        wait_for_completion(&rtlpriv->firmware_loading_complete);
        clear_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
 
+       /* remove form debug */
+       rtl_debug_remove_one(hw);
+
        /*ieee80211_unregister_hw will call ops_stop */
        if (rtlmac->mac80211_registered == 1) {
                ieee80211_unregister_hw(hw);
diff --git a/drivers/net/wireless/realtek/rtlwifi/wifi.h 
b/drivers/net/wireless/realtek/rtlwifi/wifi.h
index 1ab1024330fb..71a523e342b7 100644
--- a/drivers/net/wireless/realtek/rtlwifi/wifi.h
+++ b/drivers/net/wireless/realtek/rtlwifi/wifi.h
@@ -2368,6 +2368,12 @@ struct rtl_works {
        struct work_struct fill_h2c_cmd;
 };
 
+struct rtl_debug {
+       /* add for debug */
+       struct dentry *debugfs_dir;
+       char debugfs_name[20];
+};
+
 #define MIMO_PS_STATIC                 0
 #define MIMO_PS_DYNAMIC                        1
 #define MIMO_PS_NOLIMIT                        3
@@ -2562,6 +2568,8 @@ struct rtl_btc_ops {
        bool (*btc_is_bt_disabled) (struct rtl_priv *rtlpriv);
        void (*btc_special_packet_notify)(struct rtl_priv *rtlpriv,
                                          u8 pkt_type);
+       void (*btc_display_bt_coex_info)(struct rtl_priv *rtlpriv,
+                                        struct seq_file *m);
        void (*btc_record_pwr_mode)(struct rtl_priv *rtlpriv, u8 *buf, u8 len);
        u8   (*btc_get_lps_val)(struct rtl_priv *rtlpriv);
        u8   (*btc_get_rpwm_val)(struct rtl_priv *rtlpriv);
@@ -2636,6 +2644,7 @@ struct rtl_priv {
        /* c2hcmd list for kthread level access */
        struct list_head c2hcmd_list;
 
+       struct rtl_debug dbg;
        int max_fw_size;
 
        /*
-- 
2.12.3

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