diff options
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx/leds.c')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/leds.c | 839 |
1 files changed, 839 insertions, 0 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/leds.c b/drivers/net/dsa/mv88e6xxx/leds.c new file mode 100644 index 000000000000..1c88bfaea46b --- /dev/null +++ b/drivers/net/dsa/mv88e6xxx/leds.c @@ -0,0 +1,839 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +#include <linux/bitfield.h> +#include <linux/leds.h> +#include <linux/property.h> + +#include "chip.h" +#include "global2.h" +#include "port.h" + +/* Offset 0x16: LED control */ + +static int mv88e6xxx_port_led_write(struct mv88e6xxx_chip *chip, int port, u16 reg) +{ + reg |= MV88E6XXX_PORT_LED_CONTROL_UPDATE; + + return mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_LED_CONTROL, reg); +} + +static int mv88e6xxx_port_led_read(struct mv88e6xxx_chip *chip, int port, + u16 ptr, u16 *val) +{ + int err; + + err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_LED_CONTROL, ptr); + if (err) + return err; + + err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_LED_CONTROL, val); + *val &= 0x3ff; + + return err; +} + +static int mv88e6xxx_led_brightness_set(struct mv88e6xxx_port *p, int led, + int brightness) +{ + u16 reg; + int err; + + err = mv88e6xxx_port_led_read(p->chip, p->port, + MV88E6XXX_PORT_LED_CONTROL_POINTER_LED01_CTRL, + ®); + if (err) + return err; + + if (led == 1) + reg &= ~MV88E6XXX_PORT_LED_CONTROL_LED1_SEL_MASK; + else + reg &= ~MV88E6XXX_PORT_LED_CONTROL_LED0_SEL_MASK; + + if (brightness) { + /* Selector 0x0f == Force LED ON */ + if (led == 1) + reg |= MV88E6XXX_PORT_LED_CONTROL_LED1_SELF; + else + reg |= MV88E6XXX_PORT_LED_CONTROL_LED0_SELF; + } else { + /* Selector 0x0e == Force LED OFF */ + if (led == 1) + reg |= MV88E6XXX_PORT_LED_CONTROL_LED1_SELE; + else + reg |= MV88E6XXX_PORT_LED_CONTROL_LED0_SELE; + } + + reg |= MV88E6XXX_PORT_LED_CONTROL_POINTER_LED01_CTRL; + + return mv88e6xxx_port_led_write(p->chip, p->port, reg); +} + +static int mv88e6xxx_led0_brightness_set_blocking(struct led_classdev *ldev, + enum led_brightness brightness) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led0); + int err; + + mv88e6xxx_reg_lock(p->chip); + err = mv88e6xxx_led_brightness_set(p, 0, brightness); + mv88e6xxx_reg_unlock(p->chip); + + return err; +} + +static int mv88e6xxx_led1_brightness_set_blocking(struct led_classdev *ldev, + enum led_brightness brightness) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led1); + int err; + + mv88e6xxx_reg_lock(p->chip); + err = mv88e6xxx_led_brightness_set(p, 1, brightness); + mv88e6xxx_reg_unlock(p->chip); + + return err; +} + +struct mv88e6xxx_led_hwconfig { + int led; + u8 portmask; + unsigned long rules; + bool fiber; + bool blink_activity; + u16 selector; +}; + +/* The following is a lookup table to check what rules we can support on a + * certain LED given restrictions such as that some rules only work with fiber + * (SFP) connections and some blink on activity by default. + */ +#define MV88E6XXX_PORTS_0_3 (BIT(0) | BIT(1) | BIT(2) | BIT(3)) +#define MV88E6XXX_PORTS_4_5 (BIT(4) | BIT(5)) +#define MV88E6XXX_PORT_4 BIT(4) +#define MV88E6XXX_PORT_5 BIT(5) + +/* Entries are listed in selector order. + * + * These configurations vary across different switch families, list + * different tables per-family here. + */ +static const struct mv88e6xxx_led_hwconfig mv88e6352_led_hwconfigs[] = { + { + .led = 0, + .portmask = MV88E6XXX_PORT_4, + .rules = BIT(TRIGGER_NETDEV_LINK), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL0, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORT_5, + .rules = BIT(TRIGGER_NETDEV_LINK_1000), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL0, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_100) | BIT(TRIGGER_NETDEV_LINK_1000), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL1, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_10) | BIT(TRIGGER_NETDEV_LINK_100), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL1, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORTS_4_5, + .rules = BIT(TRIGGER_NETDEV_LINK_100), + .blink_activity = true, + .fiber = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL1, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_4_5, + .rules = BIT(TRIGGER_NETDEV_LINK_1000), + .blink_activity = true, + .fiber = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL1, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_1000), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL2, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_10) | BIT(TRIGGER_NETDEV_LINK_100), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL2, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORTS_4_5, + .rules = BIT(TRIGGER_NETDEV_LINK_1000), + .blink_activity = true, + .fiber = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL2, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_4_5, + .rules = BIT(TRIGGER_NETDEV_LINK_100), + .blink_activity = true, + .fiber = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL2, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL3, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_1000), + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL3, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_4_5, + .rules = BIT(TRIGGER_NETDEV_LINK), + .fiber = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL3, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORT_4, + .rules = BIT(TRIGGER_NETDEV_LINK), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL4, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORT_5, + .rules = BIT(TRIGGER_NETDEV_LINK), + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL5, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_FULL_DUPLEX), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL6, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_10) | BIT(TRIGGER_NETDEV_LINK_1000), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL6, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORT_4, + .rules = BIT(TRIGGER_NETDEV_FULL_DUPLEX), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL6, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORT_5, + .rules = BIT(TRIGGER_NETDEV_FULL_DUPLEX), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL6, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_10) | BIT(TRIGGER_NETDEV_LINK_1000), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL7, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_10) | BIT(TRIGGER_NETDEV_LINK_1000), + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL7, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK), + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL8, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL8, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORT_5, + .rules = BIT(TRIGGER_NETDEV_LINK), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL8, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_10), + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SEL9, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_100), + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SEL9, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_10), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SELA, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_100), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SELA, + }, + { + .led = 0, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_100) | BIT(TRIGGER_NETDEV_LINK_1000), + .selector = MV88E6XXX_PORT_LED_CONTROL_LED0_SELB, + }, + { + .led = 1, + .portmask = MV88E6XXX_PORTS_0_3, + .rules = BIT(TRIGGER_NETDEV_LINK_100) | BIT(TRIGGER_NETDEV_LINK_1000), + .blink_activity = true, + .selector = MV88E6XXX_PORT_LED_CONTROL_LED1_SELB, + }, +}; + +/* mv88e6xxx_led_match_selector() - look up the appropriate LED mode selector + * @p: port state container + * @led: LED number, 0 or 1 + * @blink_activity: blink the LED (usually blink on indicated activity) + * @fiber: the link is connected to fiber such as SFP + * @rules: LED status flags from the LED classdev core + * @selector: fill in the selector in this parameter with an OR operation + */ +static int mv88e6xxx_led_match_selector(struct mv88e6xxx_port *p, int led, bool blink_activity, + bool fiber, unsigned long rules, u16 *selector) +{ + const struct mv88e6xxx_led_hwconfig *conf; + int i; + + /* No rules means we turn the LED off */ + if (!rules) { + if (led == 1) + *selector |= MV88E6XXX_PORT_LED_CONTROL_LED1_SELE; + else + *selector |= MV88E6XXX_PORT_LED_CONTROL_LED0_SELE; + return 0; + } + + /* TODO: these rules are for MV88E6352, when adding other families, + * think about making sure you select the table that match the + * specific switch family. + */ + for (i = 0; i < ARRAY_SIZE(mv88e6352_led_hwconfigs); i++) { + conf = &mv88e6352_led_hwconfigs[i]; + + if (conf->led != led) + continue; + + if (!(conf->portmask & BIT(p->port))) + continue; + + if (conf->blink_activity != blink_activity) + continue; + + if (conf->fiber != fiber) + continue; + + if (conf->rules == rules) { + dev_dbg(p->chip->dev, "port%d LED %d set selector %04x for rules %08lx\n", + p->port, led, conf->selector, rules); + *selector |= conf->selector; + return 0; + } + } + + return -EOPNOTSUPP; +} + +/* mv88e6xxx_led_match_selector() - find Linux netdev rules from a selector value + * @p: port state container + * @selector: the selector value from the LED actity register + * @led: LED number, 0 or 1 + * @rules: Linux netdev activity rules found from selector + */ +static int +mv88e6xxx_led_match_rule(struct mv88e6xxx_port *p, u16 selector, int led, unsigned long *rules) +{ + const struct mv88e6xxx_led_hwconfig *conf; + int i; + + /* Find the selector in the table, we just look for the right selector + * and ignore if the activity has special properties such as blinking + * or is fiber-only. + */ + for (i = 0; i < ARRAY_SIZE(mv88e6352_led_hwconfigs); i++) { + conf = &mv88e6352_led_hwconfigs[i]; + + if (conf->led != led) + continue; + + if (!(conf->portmask & BIT(p->port))) + continue; + + if (conf->selector == selector) { + dev_dbg(p->chip->dev, "port%d LED %d has selector %04x, rules %08lx\n", + p->port, led, selector, conf->rules); + *rules = conf->rules; + return 0; + } + } + + return -EINVAL; +} + +/* mv88e6xxx_led_get_selector() - get the appropriate LED mode selector + * @p: port state container + * @led: LED number, 0 or 1 + * @fiber: the link is connected to fiber such as SFP + * @rules: LED status flags from the LED classdev core + * @selector: fill in the selector in this parameter with an OR operation + */ +static int mv88e6xxx_led_get_selector(struct mv88e6xxx_port *p, int led, + bool fiber, unsigned long rules, u16 *selector) +{ + int err; + + /* What happens here is that we first try to locate a trigger with solid + * indicator (such as LED is on for a 1000 link) else we try a second + * sweep to find something suitable with a trigger that will blink on + * activity. + */ + err = mv88e6xxx_led_match_selector(p, led, false, fiber, rules, selector); + if (err) + return mv88e6xxx_led_match_selector(p, led, true, fiber, rules, selector); + + return 0; +} + +/* Sets up the hardware blinking period */ +static int mv88e6xxx_led_set_blinking_period(struct mv88e6xxx_port *p, int led, + unsigned long delay_on, unsigned long delay_off) +{ + unsigned long period; + u16 reg; + + period = delay_on + delay_off; + + reg = 0; + + switch (period) { + case 21: + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_BLINK_RATE_21MS; + break; + case 42: + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_BLINK_RATE_42MS; + break; + case 84: + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_BLINK_RATE_84MS; + break; + case 168: + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_BLINK_RATE_168MS; + break; + case 336: + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_BLINK_RATE_336MS; + break; + case 672: + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_BLINK_RATE_672MS; + break; + default: + /* Fall back to software blinking */ + return -EINVAL; + } + + /* This is essentially PWM duty cycle: how long time of the period + * will the LED be on. Zero isn't great in most cases. + */ + switch (delay_on) { + case 0: + /* This is usually pretty useless and will make the LED look OFF */ + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_PULSE_STRETCH_NONE; + break; + case 21: + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_PULSE_STRETCH_21MS; + break; + case 42: + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_PULSE_STRETCH_42MS; + break; + case 84: + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_PULSE_STRETCH_84MS; + break; + case 168: + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_PULSE_STRETCH_168MS; + break; + default: + /* Just use something non-zero */ + reg |= MV88E6XXX_PORT_LED_CONTROL_0x06_PULSE_STRETCH_21MS; + break; + } + + /* Set up blink rate */ + reg |= MV88E6XXX_PORT_LED_CONTROL_POINTER_STRETCH_BLINK; + + return mv88e6xxx_port_led_write(p->chip, p->port, reg); +} + +static int mv88e6xxx_led_blink_set(struct mv88e6xxx_port *p, int led, + unsigned long *delay_on, unsigned long *delay_off) +{ + u16 reg; + int err; + + /* Choose a sensible default 336 ms (~3 Hz) */ + if ((*delay_on == 0) && (*delay_off == 0)) { + *delay_on = 168; + *delay_off = 168; + } + + /* No off delay is just on */ + if (*delay_off == 0) + return mv88e6xxx_led_brightness_set(p, led, 1); + + err = mv88e6xxx_led_set_blinking_period(p, led, *delay_on, *delay_off); + if (err) + return err; + + err = mv88e6xxx_port_led_read(p->chip, p->port, + MV88E6XXX_PORT_LED_CONTROL_POINTER_LED01_CTRL, + ®); + if (err) + return err; + + if (led == 1) + reg &= ~MV88E6XXX_PORT_LED_CONTROL_LED1_SEL_MASK; + else + reg &= ~MV88E6XXX_PORT_LED_CONTROL_LED0_SEL_MASK; + + /* This will select the forced blinking status */ + if (led == 1) + reg |= MV88E6XXX_PORT_LED_CONTROL_LED1_SELD; + else + reg |= MV88E6XXX_PORT_LED_CONTROL_LED0_SELD; + + reg |= MV88E6XXX_PORT_LED_CONTROL_POINTER_LED01_CTRL; + + return mv88e6xxx_port_led_write(p->chip, p->port, reg); +} + +static int mv88e6xxx_led0_blink_set(struct led_classdev *ldev, + unsigned long *delay_on, + unsigned long *delay_off) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led0); + int err; + + mv88e6xxx_reg_lock(p->chip); + err = mv88e6xxx_led_blink_set(p, 0, delay_on, delay_off); + mv88e6xxx_reg_unlock(p->chip); + + return err; +} + +static int mv88e6xxx_led1_blink_set(struct led_classdev *ldev, + unsigned long *delay_on, + unsigned long *delay_off) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led1); + int err; + + mv88e6xxx_reg_lock(p->chip); + err = mv88e6xxx_led_blink_set(p, 1, delay_on, delay_off); + mv88e6xxx_reg_unlock(p->chip); + + return err; +} + +static int +mv88e6xxx_led0_hw_control_is_supported(struct led_classdev *ldev, unsigned long rules) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led0); + u16 selector = 0; + + return mv88e6xxx_led_get_selector(p, 0, p->fiber, rules, &selector); +} + +static int +mv88e6xxx_led1_hw_control_is_supported(struct led_classdev *ldev, unsigned long rules) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led1); + u16 selector = 0; + + return mv88e6xxx_led_get_selector(p, 1, p->fiber, rules, &selector); +} + +static int mv88e6xxx_led_hw_control_set(struct mv88e6xxx_port *p, + int led, unsigned long rules) +{ + u16 reg; + int err; + + err = mv88e6xxx_port_led_read(p->chip, p->port, + MV88E6XXX_PORT_LED_CONTROL_POINTER_LED01_CTRL, + ®); + if (err) + return err; + + if (led == 1) + reg &= ~MV88E6XXX_PORT_LED_CONTROL_LED1_SEL_MASK; + else + reg &= ~MV88E6XXX_PORT_LED_CONTROL_LED0_SEL_MASK; + + err = mv88e6xxx_led_get_selector(p, led, p->fiber, rules, ®); + if (err) + return err; + + reg |= MV88E6XXX_PORT_LED_CONTROL_POINTER_LED01_CTRL; + + if (led == 0) + dev_dbg(p->chip->dev, "LED 0 hw control on port %d trigger selector 0x%02x\n", + p->port, + (unsigned int)(reg & MV88E6XXX_PORT_LED_CONTROL_LED0_SEL_MASK)); + else + dev_dbg(p->chip->dev, "LED 1 hw control on port %d trigger selector 0x%02x\n", + p->port, + (unsigned int)(reg & MV88E6XXX_PORT_LED_CONTROL_LED1_SEL_MASK) >> 4); + + return mv88e6xxx_port_led_write(p->chip, p->port, reg); +} + +static int +mv88e6xxx_led_hw_control_get(struct mv88e6xxx_port *p, int led, unsigned long *rules) +{ + u16 val; + int err; + + mv88e6xxx_reg_lock(p->chip); + err = mv88e6xxx_port_led_read(p->chip, p->port, + MV88E6XXX_PORT_LED_CONTROL_POINTER_LED01_CTRL, &val); + mv88e6xxx_reg_unlock(p->chip); + if (err) + return err; + + /* Mask out the selector bits for this port */ + if (led == 1) { + val &= MV88E6XXX_PORT_LED_CONTROL_LED1_SEL_MASK; + /* It's forced blinking/OFF/ON */ + if (val == MV88E6XXX_PORT_LED_CONTROL_LED1_SELD || + val == MV88E6XXX_PORT_LED_CONTROL_LED1_SELE || + val == MV88E6XXX_PORT_LED_CONTROL_LED1_SELF) { + *rules = 0; + return 0; + } + } else { + val &= MV88E6XXX_PORT_LED_CONTROL_LED0_SEL_MASK; + /* It's forced blinking/OFF/ON */ + if (val == MV88E6XXX_PORT_LED_CONTROL_LED0_SELD || + val == MV88E6XXX_PORT_LED_CONTROL_LED0_SELE || + val == MV88E6XXX_PORT_LED_CONTROL_LED0_SELF) { + *rules = 0; + return 0; + } + } + + err = mv88e6xxx_led_match_rule(p, val, led, rules); + if (!err) + return 0; + + dev_dbg(p->chip->dev, "couldn't find matching selector for %04x\n", val); + *rules = 0; + return 0; +} + +static int +mv88e6xxx_led0_hw_control_set(struct led_classdev *ldev, unsigned long rules) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led0); + int err; + + mv88e6xxx_reg_lock(p->chip); + err = mv88e6xxx_led_hw_control_set(p, 0, rules); + mv88e6xxx_reg_unlock(p->chip); + + return err; +} + +static int +mv88e6xxx_led1_hw_control_set(struct led_classdev *ldev, unsigned long rules) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led1); + int err; + + mv88e6xxx_reg_lock(p->chip); + err = mv88e6xxx_led_hw_control_set(p, 1, rules); + mv88e6xxx_reg_unlock(p->chip); + + return err; +} + +static int +mv88e6xxx_led0_hw_control_get(struct led_classdev *ldev, unsigned long *rules) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led0); + + return mv88e6xxx_led_hw_control_get(p, 0, rules); +} + +static int +mv88e6xxx_led1_hw_control_get(struct led_classdev *ldev, unsigned long *rules) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led1); + + return mv88e6xxx_led_hw_control_get(p, 1, rules); +} + +static struct device *mv88e6xxx_led_hw_control_get_device(struct mv88e6xxx_port *p) +{ + struct dsa_port *dp; + + dp = dsa_to_port(p->chip->ds, p->port); + if (!dp) + return NULL; + if (dp->user) + return &dp->user->dev; + return NULL; +} + +static struct device * +mv88e6xxx_led0_hw_control_get_device(struct led_classdev *ldev) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led0); + + return mv88e6xxx_led_hw_control_get_device(p); +} + +static struct device * +mv88e6xxx_led1_hw_control_get_device(struct led_classdev *ldev) +{ + struct mv88e6xxx_port *p = container_of(ldev, struct mv88e6xxx_port, led1); + + return mv88e6xxx_led_hw_control_get_device(p); +} + +int mv88e6xxx_port_setup_leds(struct mv88e6xxx_chip *chip, int port) +{ + struct fwnode_handle *led = NULL, *leds = NULL; + struct led_init_data init_data = { }; + enum led_default_state state; + struct mv88e6xxx_port *p; + struct led_classdev *l; + struct device *dev; + u32 led_num; + int ret; + + /* LEDs are on ports 1,2,3,4, 5 and 6 (index 0..5), no more */ + if (port > 5) + return -EOPNOTSUPP; + + p = &chip->ports[port]; + if (!p->fwnode) + return 0; + + dev = chip->dev; + + leds = fwnode_get_named_child_node(p->fwnode, "leds"); + if (!leds) { + dev_dbg(dev, "No Leds node specified in device tree for port %d!\n", + port); + return 0; + } + + fwnode_for_each_child_node(leds, led) { + /* Reg represent the led number of the port, max 2 + * LEDs can be connected to each port, in some designs + * only one LED is connected. + */ + if (fwnode_property_read_u32(led, "reg", &led_num)) + continue; + if (led_num > 1) { + dev_err(dev, "invalid LED specified port %d\n", port); + return -EINVAL; + } + + if (led_num == 0) + l = &p->led0; + else + l = &p->led1; + + state = led_init_default_state_get(led); + switch (state) { + case LEDS_DEFSTATE_ON: + l->brightness = 1; + mv88e6xxx_led_brightness_set(p, led_num, 1); + break; + case LEDS_DEFSTATE_KEEP: + break; + default: + l->brightness = 0; + mv88e6xxx_led_brightness_set(p, led_num, 0); + } + + l->max_brightness = 1; + if (led_num == 0) { + l->brightness_set_blocking = mv88e6xxx_led0_brightness_set_blocking; + l->blink_set = mv88e6xxx_led0_blink_set; + l->hw_control_is_supported = mv88e6xxx_led0_hw_control_is_supported; + l->hw_control_set = mv88e6xxx_led0_hw_control_set; + l->hw_control_get = mv88e6xxx_led0_hw_control_get; + l->hw_control_get_device = mv88e6xxx_led0_hw_control_get_device; + } else { + l->brightness_set_blocking = mv88e6xxx_led1_brightness_set_blocking; + l->blink_set = mv88e6xxx_led1_blink_set; + l->hw_control_is_supported = mv88e6xxx_led1_hw_control_is_supported; + l->hw_control_set = mv88e6xxx_led1_hw_control_set; + l->hw_control_get = mv88e6xxx_led1_hw_control_get; + l->hw_control_get_device = mv88e6xxx_led1_hw_control_get_device; + } + l->hw_control_trigger = "netdev"; + + init_data.default_label = ":port"; + init_data.fwnode = led; + init_data.devname_mandatory = true; + init_data.devicename = kasprintf(GFP_KERNEL, "%s:0%d:0%d", chip->info->name, + port, led_num); + if (!init_data.devicename) + return -ENOMEM; + + ret = devm_led_classdev_register_ext(dev, l, &init_data); + kfree(init_data.devicename); + + if (ret) { + dev_err(dev, "Failed to init LED %d for port %d", led_num, port); + return ret; + } + } + + return 0; +} |