From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Chou Date: Sat, 27 Mar 2010 12:54:14 +0800 Subject: [U-Boot] [PATCH] nios2: add gpio based status led driver Message-ID: <1269665654-2609-1-git-send-email-thomas@wytron.com.tw> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de This patch adds a gpio based status led driver. The led mask is used to specify the gpio pin. Signed-off-by: Thomas Chou --- board/altera/common/gpioled.c | 30 ++++++++++++++++++++++++++++++ 1 files changed, 30 insertions(+), 0 deletions(-) create mode 100644 board/altera/common/gpioled.c diff --git a/board/altera/common/gpioled.c b/board/altera/common/gpioled.c new file mode 100644 index 0000000..9a51fae --- /dev/null +++ b/board/altera/common/gpioled.c @@ -0,0 +1,30 @@ +/* + * Status LED driver based on gpio + * + * Copyright (C) 2010 Thomas Chou + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include + +/* assume led is active low */ + +void __led_init(led_id_t mask, int state) +{ + gpio_direction_output(mask, (state == STATUS_LED_ON) ? 0 : 1); +} + +void __led_set(led_id_t mask, int state) +{ + gpio_set_value(mask, (state == STATUS_LED_ON) ? 0 : 1); +} + +void __led_toggle(led_id_t mask) +{ + gpio_set_value(mask, !gpio_get_value (mask)); +} -- 1.6.6.1