powerpc: Migrate SYS_L3_SIZE to Kconfig

[platform/kernel/u-boot.git] / drivers / led / led-uclass.c

diff --git a/drivers/led/led-uclass.c b/drivers/led/led-uclass.c
index a80ae93..68ca3c2 100644 (file)
--- a/drivers/led/led-uclass.c
+++ b/drivers/led/led-uclass.c
@@ -1,14 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2015 Google, Inc
  * Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
+#define LOG_CATEGORY UCLASS_LED
+
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
 #include <led.h>
+#include <dm/device-internal.h>
 #include <dm/root.h>
 #include <dm/uclass-internal.h>
 
@@ -22,27 +24,94 @@ int led_get_by_label(const char *label, struct udevice **devp)
        if (ret)
                return ret;
        uclass_foreach_dev(dev, uc) {
-               struct led_uclass_plat *uc_plat = dev_get_uclass_platdata(dev);
+               struct led_uc_plat *uc_plat = dev_get_uclass_plat(dev);
 
-               if (!strcmp(label, uc_plat->label))
+               /* Ignore the top-level LED node */
+               if (uc_plat->label && !strcmp(label, uc_plat->label))
                        return uclass_get_device_tail(dev, 0, devp);
        }
 
-       return -ENOENT;
+       return -ENODEV;
+}
+
+int led_set_state(struct udevice *dev, enum led_state_t state)
+{
+       struct led_ops *ops = led_get_ops(dev);
+
+       if (!ops->set_state)
+               return -ENOSYS;
+
+       return ops->set_state(dev, state);
+}
+
+enum led_state_t led_get_state(struct udevice *dev)
+{
+       struct led_ops *ops = led_get_ops(dev);
+
+       if (!ops->get_state)
+               return -ENOSYS;
+
+       return ops->get_state(dev);
 }
 
-int led_set_on(struct udevice *dev, int on)
+#ifdef CONFIG_LED_BLINK
+int led_set_period(struct udevice *dev, int period_ms)
 {
        struct led_ops *ops = led_get_ops(dev);
 
-       if (!ops->set_on)
+       if (!ops->set_period)
                return -ENOSYS;
 
-       return ops->set_on(dev, on);
+       return ops->set_period(dev, period_ms);
+}
+#endif
+
+static int led_post_bind(struct udevice *dev)
+{
+       struct led_uc_plat *uc_plat = dev_get_uclass_plat(dev);
+       const char *default_state;
+
+       uc_plat->label = dev_read_string(dev, "label");
+       if (!uc_plat->label)
+               uc_plat->label = ofnode_get_name(dev_ofnode(dev));
+
+       uc_plat->default_state = LEDST_COUNT;
+
+       default_state = dev_read_string(dev, "default-state");
+       if (!default_state)
+               return 0;
+
+       if (!strncmp(default_state, "on", 2))
+               uc_plat->default_state = LEDST_ON;
+       else if (!strncmp(default_state, "off", 3))
+               uc_plat->default_state = LEDST_OFF;
+       else
+               return 0;
+
+       /*
+        * In case the LED has default-state DT property, trigger
+        * probe() to configure its default state during startup.
+        */
+       dev_or_flags(dev, DM_FLAG_PROBE_AFTER_BIND);
+
+       return 0;
+}
+
+static int led_post_probe(struct udevice *dev)
+{
+       struct led_uc_plat *uc_plat = dev_get_uclass_plat(dev);
+
+       if (uc_plat->default_state == LEDST_ON ||
+           uc_plat->default_state == LEDST_OFF)
+               led_set_state(dev, uc_plat->default_state);
+
+       return 0;
 }
 
 UCLASS_DRIVER(led) = {
        .id             = UCLASS_LED,
        .name           = "led",
-       .per_device_platdata_auto_alloc_size = sizeof(struct led_uclass_plat),
+       .per_device_plat_auto   = sizeof(struct led_uc_plat),
+       .post_bind      = led_post_bind,
+       .post_probe     = led_post_probe,
 };