From ad9f072c2e3b6b4b198f171cb1ba6c0e7fc3e06e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20Bie=C3=9Fmann?= <andreas.biessmann@corscience.de>
Date: Fri, 6 Sep 2013 15:04:54 +0200
Subject: tricorder: add led support
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Signed-off-by: Andreas Bießmann <andreas.biessmann@corscience.de>
---
 board/corscience/tricorder/led.c | 80 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 board/corscience/tricorder/led.c

(limited to 'board/corscience/tricorder/led.c')

diff --git a/board/corscience/tricorder/led.c b/board/corscience/tricorder/led.c
new file mode 100644
index 0000000..30f2f50
--- /dev/null
+++ b/board/corscience/tricorder/led.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2013 Corscience GmbH & Co.KG
+ * Andreas Bießmann <andreas.biessmann@corscience.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <status_led.h>
+#include <twl4030.h>
+#include <asm/arch/cpu.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+
+#define TRICORDER_STATUS_LED_YELLOW 42
+#define TRICORDER_STATUS_LED_GREEN  43
+
+void __led_init(led_id_t mask, int state)
+{
+	__led_set(mask, state);
+}
+
+void __led_toggle(led_id_t mask)
+{
+	int toggle_gpio = 0;
+#ifdef STATUS_LED_BIT
+	if (!toggle_gpio && STATUS_LED_BIT & mask)
+		toggle_gpio = TRICORDER_STATUS_LED_GREEN;
+#endif
+#ifdef STATUS_LED_BIT1
+	if (!toggle_gpio && STATUS_LED_BIT1 & mask)
+		toggle_gpio = TRICORDER_STATUS_LED_YELLOW;
+#endif
+#ifdef STATUS_LED_BIT2
+	if (!toggle_gpio && STATUS_LED_BIT2 & mask) {
+		uint8_t val;
+		twl4030_i2c_read_u8(TWL4030_CHIP_LED, TWL4030_LED_LEDEN,
+				    &val);
+		val ^= (TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDAPWM);
+		twl4030_i2c_write_u8(TWL4030_CHIP_LED, TWL4030_LED_LEDEN,
+				     val);
+	}
+#endif
+	if (toggle_gpio) {
+		int state;
+		gpio_request(toggle_gpio, "");
+		state = gpio_get_value(toggle_gpio);
+		gpio_set_value(toggle_gpio, !state);
+	}
+}
+
+void __led_set(led_id_t mask, int state)
+{
+#ifdef STATUS_LED_BIT
+	if (STATUS_LED_BIT & mask) {
+		gpio_request(TRICORDER_STATUS_LED_GREEN, "");
+		gpio_direction_output(TRICORDER_STATUS_LED_GREEN, 0);
+		gpio_set_value(TRICORDER_STATUS_LED_GREEN, state);
+	}
+#endif
+#ifdef STATUS_LED_BIT1
+	if (STATUS_LED_BIT1 & mask) {
+		gpio_request(TRICORDER_STATUS_LED_YELLOW, "");
+		gpio_direction_output(TRICORDER_STATUS_LED_YELLOW, 0);
+		gpio_set_value(TRICORDER_STATUS_LED_YELLOW, state);
+	}
+#endif
+#ifdef STATUS_LED_BIT2
+	if (STATUS_LED_BIT2 & mask) {
+		if (STATUS_LED_OFF == state)
+			twl4030_i2c_write_u8(TWL4030_CHIP_LED,
+					     TWL4030_LED_LEDEN, 0);
+		else
+			twl4030_i2c_write_u8(TWL4030_CHIP_LED,
+					     TWL4030_LED_LEDEN,
+					     (TWL4030_LED_LEDEN_LEDAON |
+					      TWL4030_LED_LEDEN_LEDAPWM));
+	}
+#endif
+}
-- 
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