wifi: rtl8xxxu: Add LED control code for RTL8723BU

Software control (on/off) and hardware control (automatic blinking)
tested with EDUP EP-N8568.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://msgid.link/7df66d1f-87a1-4f44-9aac-ce75438abde3@gmail.com

diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c
index 9640c841d20a883c4a28a3a8d6ce626a07d16294..6653f43973cf696384173cada27433f70f2cc743 100644 (file)
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c
@@ -1701,6 +1701,28 @@ static s8 rtl8723b_cck_rssi(struct rtl8xxxu_priv *priv, struct rtl8723au_phy_sta
        return rx_pwr_all;
 }
 
+static int rtl8723bu_led_brightness_set(struct led_classdev *led_cdev,
+                                       enum led_brightness brightness)
+{
+       struct rtl8xxxu_priv *priv = container_of(led_cdev,
+                                                 struct rtl8xxxu_priv,
+                                                 led_cdev);
+       u8 ledcfg = rtl8xxxu_read8(priv, REG_LEDCFG2);
+
+       ledcfg &= LEDCFG2_DPDT_SELECT;
+
+       if (brightness == LED_OFF)
+               ledcfg |= LEDCFG2_SW_LED_CONTROL | LEDCFG2_SW_LED_DISABLE;
+       else if (brightness == LED_ON)
+               ledcfg |= LEDCFG2_SW_LED_CONTROL;
+       else if (brightness == RTL8XXXU_HW_LED_CONTROL)
+               ledcfg |= LEDCFG2_HW_LED_CONTROL | LEDCFG2_HW_LED_ENABLE;
+
+       rtl8xxxu_write8(priv, REG_LEDCFG2, ledcfg);
+
+       return 0;
+}
+
 struct rtl8xxxu_fileops rtl8723bu_fops = {
        .identify_chip = rtl8723bu_identify_chip,
        .parse_efuse = rtl8723bu_parse_efuse,
@@ -1731,6 +1753,7 @@ struct rtl8xxxu_fileops rtl8723bu_fops = {
        .fill_txdesc = rtl8xxxu_fill_txdesc_v2,
        .set_crystal_cap = rtl8723a_set_crystal_cap,
        .cck_rssi = rtl8723b_cck_rssi,
+       .led_classdev_brightness_set = rtl8723bu_led_brightness_set,
        .writeN_block_size = 1024,
        .tx_desc_size = sizeof(struct rtl8xxxu_txdesc40),
        .rx_desc_size = sizeof(struct rtl8xxxu_rxdesc24),