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net: dsa: qca8k: add LEDs blink_set() support

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Add LEDs blink_set() support to qca8k Switch Family.
These LEDs support hw accellerated blinking at a fixed rate
of 4Hz.

Reject any other value since not supported by the LEDs switch.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christian Marangi 2023-04-17 17:17:25 +02:00 committed by David S. Miller
parent 1e264f9d29
commit 91acadcc6e
1 changed files with 38 additions and 0 deletions
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38
drivers/net/dsa/qca/qca8k-leds.c
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@ -127,6 +127,43 @@ qca8k_led_brightness_get(struct qca8k_led *led)
return val == QCA8K_LED_ALWAYS_ON;
}
static int
qca8k_cled_blink_set(struct led_classdev *ldev,
unsigned long *delay_on,
unsigned long *delay_off)
{
struct qca8k_led *led = container_of(ldev, struct qca8k_led, cdev);
u32 mask, val = QCA8K_LED_ALWAYS_BLINK_4HZ;
struct qca8k_led_pattern_en reg_info;
struct qca8k_priv *priv = led->priv;
if (*delay_on == 0 && *delay_off == 0) {
*delay_on = 125;
*delay_off = 125;
}
if (*delay_on != 125 || *delay_off != 125) {
/* The hardware only supports blinking at 4Hz. Fall back
* to software implementation in other cases.
*/
return -EINVAL;
}
qca8k_get_enable_led_reg(led->port_num, led->led_num, &reg_info);
if (led->port_num == 0 || led->port_num == 4) {
mask = QCA8K_LED_PATTERN_EN_MASK;
val <<= QCA8K_LED_PATTERN_EN_SHIFT;
} else {
mask = QCA8K_LED_PHY123_PATTERN_EN_MASK;
}
regmap_update_bits(priv->regmap, reg_info.reg, mask << reg_info.shift,
val << reg_info.shift);
return 0;
}
static int
qca8k_parse_port_leds(struct qca8k_priv *priv, struct fwnode_handle *port, int port_num)
{
@ -186,6 +223,7 @@ qca8k_parse_port_leds(struct qca8k_priv *priv, struct fwnode_handle *port, int p
port_led->cdev.max_brightness = 1;
port_led->cdev.brightness_set_blocking = qca8k_cled_brightness_set_blocking;
port_led->cdev.blink_set = qca8k_cled_blink_set;
init_data.default_label = ":port";
init_data.fwnode = led;
init_data.devname_mandatory = true;