wifi: rtl8xxxu: Add LED control code for RTL8192EU

By default the LED will blink when there is some activity.

This was tested with a cheap "HT-WR813" from Aliexpress.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/8f7fd5d7-5baa-b38b-ad2a-977dcd9edd81@gmail.com

diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
index 4a1c9bc..5cfc002 100644 (file)
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
@@ -1764,6 +1764,29 @@ static s8 rtl8192e_cck_rssi(struct rtl8xxxu_priv *priv, u8 cck_agc_rpt)
        return rx_pwr_all;
 }
 
+static int rtl8192eu_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_LEDCFG1);
+
+       if (brightness == LED_OFF) {
+               ledcfg &= ~LEDCFG1_HW_LED_CONTROL;
+               ledcfg |= LEDCFG1_LED_DISABLE;
+       } else if (brightness == LED_ON) {
+               ledcfg &= ~(LEDCFG1_HW_LED_CONTROL | LEDCFG1_LED_DISABLE);
+       } else if (brightness == RTL8XXXU_HW_LED_CONTROL) {
+               ledcfg &= ~LEDCFG1_LED_DISABLE;
+               ledcfg |= LEDCFG1_HW_LED_CONTROL;
+       }
+
+       rtl8xxxu_write8(priv, REG_LEDCFG1, ledcfg);
+
+       return 0;
+}
+
 struct rtl8xxxu_fileops rtl8192eu_fops = {
        .identify_chip = rtl8192eu_identify_chip,
        .parse_efuse = rtl8192eu_parse_efuse,
@@ -1788,6 +1811,7 @@ struct rtl8xxxu_fileops rtl8192eu_fops = {
        .fill_txdesc = rtl8xxxu_fill_txdesc_v2,
        .set_crystal_cap = rtl8723a_set_crystal_cap,
        .cck_rssi = rtl8192e_cck_rssi,
+       .led_classdev_brightness_set = rtl8192eu_led_brightness_set,
        .writeN_block_size = 128,
        .tx_desc_size = sizeof(struct rtl8xxxu_txdesc40),
        .rx_desc_size = sizeof(struct rtl8xxxu_rxdesc24),

diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h
index d510ce2..5849fa4 100644 (file)
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h
@@ -147,6 +147,8 @@
 #define REG_LEDCFG0                    0x004c
 #define  LEDCFG0_DPDT_SELECT           BIT(23)
 #define REG_LEDCFG1                    0x004d
+#define  LEDCFG1_HW_LED_CONTROL                BIT(1)
+#define  LEDCFG1_LED_DISABLE           BIT(7)
 #define REG_LEDCFG2                    0x004e
 #define  LEDCFG2_HW_LED_CONTROL                BIT(1)
 #define  LEDCFG2_HW_LED_ENABLE         BIT(5)