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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/drivers/misc/gpio_led.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/drivers/misc/gpio_led.c')
-rw-r--r--qemu/roms/u-boot/drivers/misc/gpio_led.c53
1 files changed, 53 insertions, 0 deletions
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
index 000000000..3e95727d7
--- /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));
+}