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75 lines
2.3 KiB
Diff
75 lines
2.3 KiB
Diff
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From 91acadcc6e599dfc62717abcdad58a459cfb1684 Mon Sep 17 00:00:00 2001
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From: Christian Marangi <ansuelsmth@gmail.com>
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Date: Mon, 17 Apr 2023 17:17:25 +0200
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Subject: [PATCH 3/9] net: dsa: qca8k: add LEDs blink_set() support
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Add LEDs blink_set() support to qca8k Switch Family.
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These LEDs support hw accellerated blinking at a fixed rate
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of 4Hz.
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Reject any other value since not supported by the LEDs switch.
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Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Acked-by: Pavel Machek <pavel@ucw.cz>
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Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/dsa/qca/qca8k-leds.c | 38 ++++++++++++++++++++++++++++++++
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1 file changed, 38 insertions(+)
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--- a/drivers/net/dsa/qca/qca8k-leds.c
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+++ b/drivers/net/dsa/qca/qca8k-leds.c
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@@ -128,6 +128,43 @@ qca8k_led_brightness_get(struct qca8k_le
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}
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static int
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+qca8k_cled_blink_set(struct led_classdev *ldev,
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+ unsigned long *delay_on,
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+ unsigned long *delay_off)
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+{
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+ struct qca8k_led *led = container_of(ldev, struct qca8k_led, cdev);
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+ u32 mask, val = QCA8K_LED_ALWAYS_BLINK_4HZ;
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+ struct qca8k_led_pattern_en reg_info;
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+ struct qca8k_priv *priv = led->priv;
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+
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+ if (*delay_on == 0 && *delay_off == 0) {
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+ *delay_on = 125;
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+ *delay_off = 125;
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+ }
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+
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+ if (*delay_on != 125 || *delay_off != 125) {
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+ /* The hardware only supports blinking at 4Hz. Fall back
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+ * to software implementation in other cases.
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+ */
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+ return -EINVAL;
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+ }
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+
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+ qca8k_get_enable_led_reg(led->port_num, led->led_num, ®_info);
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+
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+ if (led->port_num == 0 || led->port_num == 4) {
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+ mask = QCA8K_LED_PATTERN_EN_MASK;
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+ val <<= QCA8K_LED_PATTERN_EN_SHIFT;
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+ } else {
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+ mask = QCA8K_LED_PHY123_PATTERN_EN_MASK;
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+ }
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+
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+ regmap_update_bits(priv->regmap, reg_info.reg, mask << reg_info.shift,
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+ val << reg_info.shift);
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+
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+ return 0;
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+}
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+
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+static int
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qca8k_parse_port_leds(struct qca8k_priv *priv, struct fwnode_handle *port, int port_num)
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{
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struct fwnode_handle *led = NULL, *leds = NULL;
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@@ -186,6 +223,7 @@ qca8k_parse_port_leds(struct qca8k_priv
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port_led->cdev.max_brightness = 1;
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port_led->cdev.brightness_set_blocking = qca8k_cled_brightness_set_blocking;
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+ port_led->cdev.blink_set = qca8k_cled_blink_set;
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init_data.default_label = ":port";
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init_data.fwnode = led;
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init_data.devname_mandatory = true;
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