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-rw-r--r--drivers/net/dsa/hirschmann/hellcreek.h4
-rw-r--r--drivers/net/dsa/hirschmann/hellcreek_ptp.c149
-rw-r--r--drivers/net/dsa/hirschmann/hellcreek_ptp.h3
3 files changed, 156 insertions, 0 deletions
diff --git a/drivers/net/dsa/hirschmann/hellcreek.h b/drivers/net/dsa/hirschmann/hellcreek.h
index e5aba055ed30..e81781ebc31c 100644
--- a/drivers/net/dsa/hirschmann/hellcreek.h
+++ b/drivers/net/dsa/hirschmann/hellcreek.h
@@ -16,6 +16,7 @@
#include <linux/kernel.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
+#include <linux/leds.h>
#include <linux/platform_data/hirschmann-hellcreek.h>
#include <linux/ptp_clock_kernel.h>
#include <linux/timecounter.h>
@@ -267,6 +268,8 @@ struct hellcreek {
struct ptp_clock_info ptp_clock_info;
struct hellcreek_port *ports;
struct delayed_work overflow_work;
+ struct led_classdev led_is_gm;
+ struct led_classdev led_sync_good;
struct mutex reg_lock; /* Switch IP register lock */
struct mutex vlan_lock; /* VLAN bitmaps lock */
struct mutex ptp_lock; /* PTP IP register lock */
@@ -276,6 +279,7 @@ struct hellcreek {
u8 *vidmbrcfg; /* vidmbrcfg shadow */
u64 seconds; /* PTP seconds */
u64 last_ts; /* Used for overflow detection */
+ u16 status_out; /* ptp.status_out shadow */
size_t fdb_entries;
};
diff --git a/drivers/net/dsa/hirschmann/hellcreek_ptp.c b/drivers/net/dsa/hirschmann/hellcreek_ptp.c
index 12ad956abd5c..2572c6087bb5 100644
--- a/drivers/net/dsa/hirschmann/hellcreek_ptp.c
+++ b/drivers/net/dsa/hirschmann/hellcreek_ptp.c
@@ -239,9 +239,148 @@ static void hellcreek_ptp_overflow_check(struct work_struct *work)
HELLCREEK_OVERFLOW_PERIOD);
}
+static enum led_brightness hellcreek_get_brightness(struct hellcreek *hellcreek,
+ int led)
+{
+ return (hellcreek->status_out & led) ? 1 : 0;
+}
+
+static void hellcreek_set_brightness(struct hellcreek *hellcreek, int led,
+ enum led_brightness b)
+{
+ mutex_lock(&hellcreek->ptp_lock);
+
+ if (b)
+ hellcreek->status_out |= led;
+ else
+ hellcreek->status_out &= ~led;
+
+ hellcreek_ptp_write(hellcreek, hellcreek->status_out, STATUS_OUT);
+
+ mutex_unlock(&hellcreek->ptp_lock);
+}
+
+static void hellcreek_led_sync_good_set(struct led_classdev *ldev,
+ enum led_brightness b)
+{
+ struct hellcreek *hellcreek = led_to_hellcreek(ldev, led_sync_good);
+
+ hellcreek_set_brightness(hellcreek, STATUS_OUT_SYNC_GOOD, b);
+}
+
+static enum led_brightness hellcreek_led_sync_good_get(struct led_classdev *ldev)
+{
+ struct hellcreek *hellcreek = led_to_hellcreek(ldev, led_sync_good);
+
+ return hellcreek_get_brightness(hellcreek, STATUS_OUT_SYNC_GOOD);
+}
+
+static void hellcreek_led_is_gm_set(struct led_classdev *ldev,
+ enum led_brightness b)
+{
+ struct hellcreek *hellcreek = led_to_hellcreek(ldev, led_is_gm);
+
+ hellcreek_set_brightness(hellcreek, STATUS_OUT_IS_GM, b);
+}
+
+static enum led_brightness hellcreek_led_is_gm_get(struct led_classdev *ldev)
+{
+ struct hellcreek *hellcreek = led_to_hellcreek(ldev, led_is_gm);
+
+ return hellcreek_get_brightness(hellcreek, STATUS_OUT_IS_GM);
+}
+
+/* There two available LEDs internally called sync_good and is_gm. However, the
+ * user might want to use a different label and specify the default state. Take
+ * those properties from device tree.
+ */
+static int hellcreek_led_setup(struct hellcreek *hellcreek)
+{
+ struct device_node *leds, *led = NULL;
+ const char *label, *state;
+ int ret = -EINVAL;
+
+ leds = of_find_node_by_name(hellcreek->dev->of_node, "leds");
+ if (!leds) {
+ dev_err(hellcreek->dev, "No LEDs specified in device tree!\n");
+ return ret;
+ }
+
+ hellcreek->status_out = 0;
+
+ led = of_get_next_available_child(leds, led);
+ if (!led) {
+ dev_err(hellcreek->dev, "First LED not specified!\n");
+ goto out;
+ }
+
+ ret = of_property_read_string(led, "label", &label);
+ hellcreek->led_sync_good.name = ret ? "sync_good" : label;
+
+ ret = of_property_read_string(led, "default-state", &state);
+ if (!ret) {
+ if (!strcmp(state, "on"))
+ hellcreek->led_sync_good.brightness = 1;
+ else if (!strcmp(state, "off"))
+ hellcreek->led_sync_good.brightness = 0;
+ else if (!strcmp(state, "keep"))
+ hellcreek->led_sync_good.brightness =
+ hellcreek_get_brightness(hellcreek,
+ STATUS_OUT_SYNC_GOOD);
+ }
+
+ hellcreek->led_sync_good.max_brightness = 1;
+ hellcreek->led_sync_good.brightness_set = hellcreek_led_sync_good_set;
+ hellcreek->led_sync_good.brightness_get = hellcreek_led_sync_good_get;
+
+ led = of_get_next_available_child(leds, led);
+ if (!led) {
+ dev_err(hellcreek->dev, "Second LED not specified!\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = of_property_read_string(led, "label", &label);
+ hellcreek->led_is_gm.name = ret ? "is_gm" : label;
+
+ ret = of_property_read_string(led, "default-state", &state);
+ if (!ret) {
+ if (!strcmp(state, "on"))
+ hellcreek->led_is_gm.brightness = 1;
+ else if (!strcmp(state, "off"))
+ hellcreek->led_is_gm.brightness = 0;
+ else if (!strcmp(state, "keep"))
+ hellcreek->led_is_gm.brightness =
+ hellcreek_get_brightness(hellcreek,
+ STATUS_OUT_IS_GM);
+ }
+
+ hellcreek->led_is_gm.max_brightness = 1;
+ hellcreek->led_is_gm.brightness_set = hellcreek_led_is_gm_set;
+ hellcreek->led_is_gm.brightness_get = hellcreek_led_is_gm_get;
+
+ /* Set initial state */
+ if (hellcreek->led_sync_good.brightness == 1)
+ hellcreek_set_brightness(hellcreek, STATUS_OUT_SYNC_GOOD, 1);
+ if (hellcreek->led_is_gm.brightness == 1)
+ hellcreek_set_brightness(hellcreek, STATUS_OUT_IS_GM, 1);
+
+ /* Register both leds */
+ led_classdev_register(hellcreek->dev, &hellcreek->led_sync_good);
+ led_classdev_register(hellcreek->dev, &hellcreek->led_is_gm);
+
+ ret = 0;
+
+out:
+ of_node_put(leds);
+
+ return ret;
+}
+
int hellcreek_ptp_setup(struct hellcreek *hellcreek)
{
u16 status;
+ int ret;
/* Set up the overflow work */
INIT_DELAYED_WORK(&hellcreek->overflow_work,
@@ -288,6 +427,14 @@ int hellcreek_ptp_setup(struct hellcreek *hellcreek)
hellcreek_ptp_write(hellcreek, status | PR_CLOCK_STATUS_C_ENA_DRIFT,
PR_CLOCK_STATUS_C);
+ /* LED setup */
+ ret = hellcreek_led_setup(hellcreek);
+ if (ret) {
+ if (hellcreek->ptp_clock)
+ ptp_clock_unregister(hellcreek->ptp_clock);
+ return ret;
+ }
+
schedule_delayed_work(&hellcreek->overflow_work,
HELLCREEK_OVERFLOW_PERIOD);
@@ -296,6 +443,8 @@ int hellcreek_ptp_setup(struct hellcreek *hellcreek)
void hellcreek_ptp_free(struct hellcreek *hellcreek)
{
+ led_classdev_unregister(&hellcreek->led_is_gm);
+ led_classdev_unregister(&hellcreek->led_sync_good);
cancel_delayed_work_sync(&hellcreek->overflow_work);
if (hellcreek->ptp_clock)
ptp_clock_unregister(hellcreek->ptp_clock);
diff --git a/drivers/net/dsa/hirschmann/hellcreek_ptp.h b/drivers/net/dsa/hirschmann/hellcreek_ptp.h
index e0eca1f4a494..0b51392c7e56 100644
--- a/drivers/net/dsa/hirschmann/hellcreek_ptp.h
+++ b/drivers/net/dsa/hirschmann/hellcreek_ptp.h
@@ -70,4 +70,7 @@ u64 hellcreek_ptp_gettime_seconds(struct hellcreek *hellcreek, u64 ns);
#define dw_overflow_to_hellcreek(dw) \
container_of(dw, struct hellcreek, overflow_work)
+#define led_to_hellcreek(ldev, led) \
+ container_of(ldev, struct hellcreek, led)
+
#endif /* _HELLCREEK_PTP_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-17 09:01:01 +0000