diff mbox series

[net-next,02/11] net: dsa: qca8k: add LEDs blink_set() support

Message ID 20230307170046.28917-3-ansuelsmth@gmail.com
State Superseded
Headers show
Series net: Add basic LED support for switch/phy | expand

Commit Message

Christian Marangi March 7, 2023, 5 p.m. UTC 
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>
---
 drivers/net/dsa/qca/qca8k-leds.c | 38 ++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

Comments

Andrew Lunn March 7, 2023, 11:16 p.m. UTC | #1 
On Tue, Mar 07, 2023 at 06:00:37PM +0100, Christian Marangi wrote:
> 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>

    Andrew
diff mbox series

Patch

diff --git a/drivers/net/dsa/qca/qca8k-leds.c b/drivers/net/dsa/qca/qca8k-leds.c
index 079f1b423f9a..821ffa1f5b5d 100644
--- a/drivers/net/dsa/qca/qca8k-leds.c
+++ b/drivers/net/dsa/qca/qca8k-leds.c
@@ -98,6 +98,43 @@  qca8k_cled_brightness_get(struct led_classdev *ldev)
 	return qca8k_led_brightness_get(led);
 }
 
+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)
 {
@@ -155,6 +192,7 @@  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.brightness_get = qca8k_cled_brightness_get;
+		port_led->cdev.blink_set = qca8k_cled_blink_set;
 		init_data.default_label = ":port";
 		init_data.devicename = "qca8k";
 		init_data.fwnode = led;