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    Subject[PATCH 5/9] can: c_can: add LED trigger support
    Date
    Add support for canbus activity led indicators on c_can devices by
    calling appropriate can_led functions.

    These are only enabled when CONFIG_CAN_LEDS is Y, becomes no-op
    otherwise.

    Cc: Bhupesh Sharma <bhupesh.sharma@st.com>
    Cc: AnilKumar Ch <anilkumar@ti.com>
    Cc: Wolfgang Grandegger <wg@grandegger.com>
    Cc: Marc Kleine-Budde <mkl@pengutronix.de>
    Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
    ---
    drivers/net/can/c_can/c_can.c | 10 ++++++++++
    1 file changed, 10 insertions(+)

    diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
    index 5233b8f..57eb1e7 100644
    --- a/drivers/net/can/c_can/c_can.c
    +++ b/drivers/net/can/c_can/c_can.c
    @@ -39,6 +39,7 @@
    #include <linux/can.h>
    #include <linux/can/dev.h>
    #include <linux/can/error.h>
    +#include <linux/can/led.h>

    #include "c_can.h"

    @@ -477,6 +478,8 @@ static int c_can_read_msg_object(struct net_device *dev, int iface, int ctrl)
    stats->rx_packets++;
    stats->rx_bytes += frame->can_dlc;

    + can_led_event(dev, CAN_LED_EVENT_RX);
    +
    return 0;
    }

    @@ -751,6 +754,7 @@ static void c_can_do_tx(struct net_device *dev)
    C_CAN_IFACE(MSGCTRL_REG, 0))
    & IF_MCONT_DLC_MASK;
    stats->tx_packets++;
    + can_led_event(dev, CAN_LED_EVENT_TX);
    c_can_inval_msg_object(dev, 0, msg_obj_no);
    } else {
    break;
    @@ -1115,6 +1119,8 @@ static int c_can_open(struct net_device *dev)

    napi_enable(&priv->napi);

    + can_led_event(dev, CAN_LED_EVENT_OPEN);
    +
    /* start the c_can controller */
    c_can_start(dev);

    @@ -1143,6 +1149,8 @@ static int c_can_close(struct net_device *dev)
    c_can_reset_ram(priv, false);
    c_can_pm_runtime_put_sync(priv);

    + can_led_event(dev, CAN_LED_EVENT_STOP);
    +
    return 0;
    }

    @@ -1268,6 +1276,8 @@ int register_c_can_dev(struct net_device *dev)
    err = register_candev(dev);
    if (err)
    c_can_pm_runtime_disable(priv);
    + else
    + devm_can_led_init(dev);

    return err;
    }
    --
    1.7.12.1


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