From 91acadcc6e599dfc62717abcdad58a459cfb1684 Mon Sep 17 00:00:00 2001 From: Christian Marangi Date: Mon, 17 Apr 2023 17:17:25 +0200 Subject: [PATCH 3/9] net: dsa: qca8k: add LEDs blink_set() support 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 Reviewed-by: Andrew Lunn Acked-by: Pavel Machek Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/dsa/qca/qca8k-leds.c | 38 ++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) --- a/drivers/net/dsa/qca/qca8k-leds.c +++ b/drivers/net/dsa/qca/qca8k-leds.c @@ -128,6 +128,43 @@ qca8k_led_brightness_get(struct qca8k_le } 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, ®_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) { struct fwnode_handle *led = NULL, *leds = NULL; @@ -186,6 +223,7 @@ qca8k_parse_port_leds(struct qca8k_priv 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;