target/linux/generic/backport-5.15/818-v6.5-13-net-dsa-qca8k-add-op-to-get-ports-netdev.patch

   1 From 4f53c27f772e27e4cf4e5507d6f4d5980002cb6a Mon Sep 17 00:00:00 2001
   2 From: Andrew Lunn <andrew@lunn.ch>
   3 Date: Mon, 29 May 2023 18:32:43 +0200
   4 Subject: [PATCH 13/13] net: dsa: qca8k: add op to get ports netdev
   5
   6 In order that the LED trigger can blink the switch MAC ports LED, it
   7 needs to know the netdev associated to the port. Add the callback to
   8 return the struct device of the netdev.
   9
  10 Add an helper function qca8k_phy_to_port() to convert the phy back to
  11 dsa_port index, as we reference LED port based on the internal PHY
  12 index and needs to be converted back.
  13
  14 Signed-off-by: Andrew Lunn <andrew@lunn.ch>
  15 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
  16 Signed-off-by: David S. Miller <davem@davemloft.net>
  17 ---
  18  drivers/net/dsa/qca/qca8k-leds.c | 27 +++++++++++++++++++++++++++
  19  1 file changed, 27 insertions(+)
  20
  21 --- a/drivers/net/dsa/qca/qca8k-leds.c
  22 +++ b/drivers/net/dsa/qca/qca8k-leds.c
  23 @@ -5,6 +5,18 @@
  24  #include "qca8k.h"
  25  #include "qca8k_leds.h"
  26
  27 +static u32 qca8k_phy_to_port(int phy)
  28 +{
  29 +       /* Internal PHY 0 has port at index 1.
  30 +        * Internal PHY 1 has port at index 2.
  31 +        * Internal PHY 2 has port at index 3.
  32 +        * Internal PHY 3 has port at index 4.
  33 +        * Internal PHY 4 has port at index 5.
  34 +        */
  35 +
  36 +       return phy + 1;
  37 +}
  38 +
  39  static int
  40  qca8k_get_enable_led_reg(int port_num, int led_num, struct qca8k_led_pattern_en *reg_info)
  41  {
  42 @@ -314,6 +326,20 @@ qca8k_cled_hw_control_get(struct led_cla
  43         return 0;
  44  }
  45
  46 +static struct device *qca8k_cled_hw_control_get_device(struct led_classdev *ldev)
  47 +{
  48 +       struct qca8k_led *led = container_of(ldev, struct qca8k_led, cdev);
  49 +       struct qca8k_priv *priv = led->priv;
  50 +       struct dsa_port *dp;
  51 +
  52 +       dp = dsa_to_port(priv->ds, qca8k_phy_to_port(led->port_num));
  53 +       if (!dp)
  54 +               return NULL;
  55 +       if (dp->slave)
  56 +               return &dp->slave->dev;
  57 +       return NULL;
  58 +}
  59 +
  60  static int
  61  qca8k_parse_port_leds(struct qca8k_priv *priv, struct fwnode_handle *port, int port_num)
  62  {
  63 @@ -377,6 +403,7 @@ qca8k_parse_port_leds(struct qca8k_priv
  64                 port_led->cdev.hw_control_is_supported = qca8k_cled_hw_control_is_supported;
  65                 port_led->cdev.hw_control_set = qca8k_cled_hw_control_set;
  66                 port_led->cdev.hw_control_get = qca8k_cled_hw_control_get;
  67 +               port_led->cdev.hw_control_get_device = qca8k_cled_hw_control_get_device;
  68                 port_led->cdev.hw_control_trigger = "netdev";
  69                 init_data.default_label = ":port";
  70                 init_data.fwnode = led;