[PATCH v2] wifi: mt76: mt7921e: add LED control support
Sean Wang
sean.wang at kernel.org
Wed Apr 17 15:06:32 PDT 2024
HI Quan,
On Wed, Apr 10, 2024 at 11:00 PM Quan Zhou <quan.zhou at mediatek.com> wrote:
>
> From: Hao Zhang <hao.zhang at mediatek.com>
>
> Introduce wifi LED switch control, add flow to Control a wifi
> gpio pin based on the status of WIFI radio, if the pin is connected
> to an LED, the LED will indicate the status of the WiFi radio.
>
> Signed-off-by: Hao Zhang <hao.zhang at mediatek.com>
> Co-developed-by: Quan Zhou <quan.zhou at mediatek.com>
> Signed-off-by: Quan Zhou <quan.zhou at mediatek.com>
> ---
> v2:
> fix to avoid wake device when Hardware interface not pcie
> ---
> .../wireless/mediatek/mt76/mt76_connac_mcu.h | 1 +
> .../net/wireless/mediatek/mt76/mt7921/main.c | 27 ++++++++++++++++++-
> .../net/wireless/mediatek/mt76/mt7921/mcu.c | 14 ++++++++++
> .../wireless/mediatek/mt76/mt7921/mt7921.h | 5 ++++
> .../net/wireless/mediatek/mt76/mt7921/pci.c | 8 +++++-
> 5 files changed, 53 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
> index 836cc4d5b1d2..4c2de556dee1 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
> +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
> @@ -1189,6 +1189,7 @@ enum {
> MCU_EXT_CMD_EFUSE_ACCESS = 0x01,
> MCU_EXT_CMD_RF_REG_ACCESS = 0x02,
> MCU_EXT_CMD_RF_TEST = 0x04,
> + MCU_EXT_CMD_ID_RADIO_ON_OFF_CTRL = 0x05,
> MCU_EXT_CMD_PM_STATE_CTRL = 0x07,
> MCU_EXT_CMD_CHANNEL_SWITCH = 0x08,
> MCU_EXT_CMD_SET_TX_POWER_CTRL = 0x11,
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
> index ca36de34171b..ea6a113b7b36 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
> @@ -242,6 +242,15 @@ int __mt7921_start(struct mt792x_phy *phy)
>
> ieee80211_queue_delayed_work(mphy->hw, &mphy->mac_work,
> MT792x_WATCHDOG_TIME);
> + if (mt76_is_mmio(mphy->dev)) {
I guess the led control MCU command is not limited to PCIe devices,
they should be able to be extended even on MT7921 USB and SDIO
devices, right ? if so, I think we can drop the MMIO limitation
condition to support more scenarios and to make it easier to
understand.
> + err = mt7921_mcu_radio_led_ctrl(phy->dev, EXT_CMD_RADIO_LED_CTRL_ENABLE);
> + if (err)
> + return err;
> +
> + err = mt7921_mcu_radio_led_ctrl(phy->dev, EXT_CMD_RADIO_ON_LED);
> + if (err)
> + return err;
> + }
>
> return 0;
> }
> @@ -259,6 +268,22 @@ static int mt7921_start(struct ieee80211_hw *hw)
> return err;
> }
>
> +static void mt7921_stop(struct ieee80211_hw *hw)
> +{
> + struct mt792x_dev *dev = mt792x_hw_dev(hw);
> + int err = 0;
> +
> + if (mt76_is_mmio(&dev->mt76)) {
> + mt792x_mutex_acquire(dev);
> + err = mt7921_mcu_radio_led_ctrl(dev, EXT_CMD_RADIO_OFF_LED);
> + mt792x_mutex_release(dev);
> + if (err)
> + return;
> + }
> +
> + mt792x_stop(hw);
> +}
> +
> static int
> mt7921_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
> {
> @@ -1372,7 +1397,7 @@ static void mt7921_mgd_complete_tx(struct ieee80211_hw *hw,
> const struct ieee80211_ops mt7921_ops = {
> .tx = mt792x_tx,
> .start = mt7921_start,
> - .stop = mt792x_stop,
> + .stop = mt7921_stop,
> .add_interface = mt7921_add_interface,
> .remove_interface = mt792x_remove_interface,
> .config = mt7921_config,
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
> index 8b4ce32a2cd1..2ebf0ffe78d5 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
> @@ -606,6 +606,20 @@ int mt7921_run_firmware(struct mt792x_dev *dev)
> }
> EXPORT_SYMBOL_GPL(mt7921_run_firmware);
>
> +int mt7921_mcu_radio_led_ctrl(struct mt792x_dev *dev, u8 value)
> +{
> + struct {
> + u8 ctrlid;
> + u8 rsv[3];
> + } __packed req = {
> + .ctrlid = value,
> + };
> +
> + return mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD(ID_RADIO_ON_OFF_CTRL),
> + &req, sizeof(req), false);
> +}
> +EXPORT_SYMBOL_GPL(mt7921_mcu_radio_led_ctrl);
> +
> int mt7921_mcu_set_tx(struct mt792x_dev *dev, struct ieee80211_vif *vif)
> {
> struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv;
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
> index 3016636d18c6..07023eb9e5b5 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
> +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
> @@ -27,6 +27,10 @@
> #define MCU_UNI_EVENT_ROC 0x27
> #define MCU_UNI_EVENT_CLC 0x80
>
> +#define EXT_CMD_RADIO_LED_CTRL_ENABLE 0x1
> +#define EXT_CMD_RADIO_ON_LED 0x2
> +#define EXT_CMD_RADIO_OFF_LED 0x3
> +
> enum {
> UNI_ROC_ACQUIRE,
> UNI_ROC_ABORT,
> @@ -196,6 +200,7 @@ int mt7921_mcu_fw_log_2_host(struct mt792x_dev *dev, u8 ctrl);
> void mt7921_mcu_rx_event(struct mt792x_dev *dev, struct sk_buff *skb);
> int mt7921_mcu_set_rxfilter(struct mt792x_dev *dev, u32 fif,
> u8 bit_op, u32 bit_map);
> +int mt7921_mcu_radio_led_ctrl(struct mt792x_dev *dev, u8 value);
>
> static inline u32
> mt7921_reg_map_l1(struct mt792x_dev *dev, u32 addr)
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
> index 0b69b225bc16..f768e9389ac6 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
> @@ -427,6 +427,10 @@ static int mt7921_pci_suspend(struct device *device)
> wait_event_timeout(dev->wait,
> !dev->regd_in_progress, 5 * HZ);
>
> + err = mt7921_mcu_radio_led_ctrl(dev, EXT_CMD_RADIO_OFF_LED);
> + if (err < 0)
> + goto restore_suspend;
> +
> err = mt76_connac_mcu_set_hif_suspend(mdev, true);
> if (err)
> goto restore_suspend;
> @@ -525,9 +529,11 @@ static int mt7921_pci_resume(struct device *device)
> mt76_connac_mcu_set_deep_sleep(&dev->mt76, false);
>
> err = mt76_connac_mcu_set_hif_suspend(mdev, false);
> + if (err < 0)
> + goto failed;
>
> mt7921_regd_update(dev);
> -
> + err = mt7921_mcu_radio_led_ctrl(dev, EXT_CMD_RADIO_ON_LED);
> failed:
> pm->suspended = false;
>
> --
> 2.18.0
>
>
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