Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / misc / gpio_led.c

diff --git a/qemu/roms/u-boot/drivers/misc/gpio_led.c b/qemu/roms/u-boot/drivers/misc/gpio_led.c
new file mode 100644 (file)
index 0000000..3e95727
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/misc/gpio_led.c
@@ -0,0 +1,53 @@
+/*
+ * Status LED driver based on GPIO access conventions of Linux
+ *
+ * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+#include <status_led.h>
+#include <asm/gpio.h>
+
+#ifndef CONFIG_GPIO_LED_INVERTED_TABLE
+#define CONFIG_GPIO_LED_INVERTED_TABLE {}
+#endif
+
+static led_id_t gpio_led_inv[] = CONFIG_GPIO_LED_INVERTED_TABLE;
+
+static int gpio_led_gpio_value(led_id_t mask, int state)
+{
+       int i, gpio_value = (state == STATUS_LED_ON);
+
+       for (i = 0; i < ARRAY_SIZE(gpio_led_inv); i++) {
+               if (gpio_led_inv[i] == mask)
+                       gpio_value = !gpio_value;
+       }
+
+       return gpio_value;
+}
+
+void __led_init(led_id_t mask, int state)
+{
+       int gpio_value;
+
+       if (gpio_request(mask, "gpio_led") != 0) {
+               printf("%s: failed requesting GPIO%lu!\n", __func__, mask);
+               return;
+       }
+
+       gpio_value = gpio_led_gpio_value(mask, state);
+       gpio_direction_output(mask, gpio_value);
+}
+
+void __led_set(led_id_t mask, int state)
+{
+       int gpio_value = gpio_led_gpio_value(mask, state);
+
+       gpio_set_value(mask, gpio_value);
+}
+
+void __led_toggle(led_id_t mask)
+{
+       gpio_set_value(mask, !gpio_get_value(mask));
+}