X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fled.h;h=02766fa56fb62ffe2f77e99c8afc0b1076b503ff;hb=64cfeda8ae2e95751c5d2dfa4dc4a906478ae2f6;hp=57c2b4a3777729bb02c4fb93ba47013d82f1ef3b;hpb=b706d63559aeec352bc72dd86d7d5423c15f6a60;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/led.h b/include/led.h
index 57c2b4a..02766fa 100644
--- a/include/led.h
+++ b/include/led.h
@@ -1,45 +1,120 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
- * (C) Copyright 2006
- * Atmel Nordic AB <www.atmel.com>
- * Ulf Samuelsson <ulf@atmel.com>
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#ifndef __LED_H
+#define __LED_H
+
+struct udevice;
+
+/**
+ * struct led_uc_plat - Platform data the uclass stores about each device
+ *
+ * @label:	LED label
+ */
+struct led_uc_plat {
+	const char *label;
+};
+
+/**
+ * struct led_uc_priv - Private data the uclass stores about each device
+ *
+ * @period_ms:	Flash period in milliseconds
+ */
+struct led_uc_priv {
+	int period_ms;
+};
+
+enum led_state_t {
+	LEDST_OFF = 0,
+	LEDST_ON = 1,
+	LEDST_TOGGLE,
+#ifdef CONFIG_LED_BLINK
+	LEDST_BLINK,
+#endif
+
+	LEDST_COUNT,
+};
+
+struct led_ops {
+	/**
+	 * set_state() - set the state of an LED
+	 *
+	 * @dev:	LED device to change
+	 * @state:	LED state to set
+	 * @return 0 if OK, -ve on error
+	 */
+	int (*set_state)(struct udevice *dev, enum led_state_t state);
+
+	/**
+	 * led_get_state() - get the state of an LED
+	 *
+	 * @dev:	LED device to change
+	 * @return LED state led_state_t, or -ve on error
+	 */
+	enum led_state_t (*get_state)(struct udevice *dev);
+
+#ifdef CONFIG_LED_BLINK
+	/**
+	 * led_set_period() - set the blink period of an LED
+	 *
+	 * Thie records the period if supported, or returns -ENOSYS if not.
+	 * To start the LED blinking, use set_state().
+	 *
+	 * @dev:	LED device to change
+	 * @period_ms:	LED blink period in milliseconds
+	 * @return 0 if OK, -ve on error
+	 */
+	int (*set_period)(struct udevice *dev, int period_ms);
+#endif
+};
+
+#define led_get_ops(dev)	((struct led_ops *)(dev)->driver->ops)
+
+/**
+ * led_get_by_label() - Find an LED device by label
  *
- * See file CREDITS for list of people who contributed to this
- * project.
+ * @label:	LED label to look up
+ * @devp:	Returns the associated device, if found
+ * @return 0 if found, -ENODEV if not found, other -ve on error
+ */
+int led_get_by_label(const char *label, struct udevice **devp);
+
+/**
+ * led_set_state() - set the state of an LED
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
+ * @dev:	LED device to change
+ * @state:	LED state to set
+ * @return 0 if OK, -ve on error
+ */
+int led_set_state(struct udevice *dev, enum led_state_t state);
+
+/**
+ * led_get_state() - get the state of an LED
  *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * @dev:	LED device to change
+ * @return LED state led_state_t, or -ve on error
+ */
+enum led_state_t led_get_state(struct udevice *dev);
+
+/**
+ * led_set_period() - set the blink period of an LED
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * @dev:	LED device to change
+ * @period_ms:	LED blink period in milliseconds
+ * @return 0 if OK, -ve on error
  */
+int led_set_period(struct udevice *dev, int period_ms);
 
-#ifndef __LED_H
-#define __LED_H
+/**
+ * led_default_state() - set the default state for all the LED
+ *
+ * This enables all leds which have default state.
+ * see Documentation/devicetree/bindings/leds/common.txt
+ *
+ */
+int led_default_state(void);
 
-#ifndef	__ASSEMBLY__
-extern void	LED_init (void);
-extern void	red_LED_on(void);
-extern void	red_LED_off(void);
-extern void	green_LED_on(void);
-extern void	green_LED_off(void);
-extern void	yellow_LED_on(void);
-extern void	yellow_LED_off(void);
-#else
-	.extern LED_init
-	.extern red_LED_on
-	.extern red_LED_off
-	.extern yellow_LED_on
-	.extern yellow_LED_off
-	.extern green_LED_on
-	.extern green_LED_off
-#endif
 #endif