From 157b125b905b6dc69164d3f43eeb5e40d3744648 Mon Sep 17 00:00:00 2001 From: Jason Kridner Date: Thu, 20 May 2010 06:14:01 -0500 Subject: [PATCH] BeagleBoard: Added LED driver Added LED driver using status_led. USR0 is set to monitor the boot status. USR1 is set to be the green LED. (cherry picked from commit 048b526fd7cc0c642f27c674b3e235321c880b66) (cherry picked from commit 21c574d9e20f86ab757f5efdd9146e6607f2faba) Signed-off-by: Jason Kridner --- board/ti/beagle/Makefile | 4 ++- board/ti/beagle/beagle.c | 8 ++++ board/ti/beagle/led.c | 91 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 102 insertions(+), 1 deletions(-) create mode 100644 board/ti/beagle/led.c diff --git a/board/ti/beagle/Makefile b/board/ti/beagle/Makefile index f797112..4cc675c 100644 --- a/board/ti/beagle/Makefile +++ b/board/ti/beagle/Makefile @@ -25,8 +25,10 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(BOARD).a -COBJS := beagle.o +COBJS-y := $(BOARD).o +COBJS-$(CONFIG_STATUS_LED) += led.o +COBJS := $(sort $(COBJS-y)) SRCS := $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(COBJS)) diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c index 556e995..d21b9c8 100644 --- a/board/ti/beagle/beagle.c +++ b/board/ti/beagle/beagle.c @@ -30,6 +30,9 @@ * MA 02111-1307 USA */ #include +#ifdef CONFIG_STATUS_LED +#include +#endif #include #include #include @@ -83,6 +86,10 @@ int board_init(void) /* boot param addr */ gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); +#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT) + status_led_set (STATUS_LED_BOOT, STATUS_LED_ON); +#endif + return 0; } @@ -278,3 +285,4 @@ void set_muxconf_regs(void) { MUX_BEAGLE(); } + diff --git a/board/ti/beagle/led.c b/board/ti/beagle/led.c new file mode 100644 index 0000000..df26552 --- /dev/null +++ b/board/ti/beagle/led.c @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2010 Texas Instruments, Inc. + * Jason Kridner + * + * 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. + * + * 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. + * + * 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 + */ +#include +#include +#include +#include +#include +#include + +static unsigned int saved_state[2] = {STATUS_LED_OFF, STATUS_LED_OFF}; + +/* GPIO pins for the LEDs */ +#define BEAGLE_LED_USR0 149 +#define BEAGLE_LED_USR1 150 + +#ifdef STATUS_LED_GREEN +void green_LED_off (void) +{ + __led_set (STATUS_LED_GREEN, 0); +} + +void green_LED_on (void) +{ + __led_set (STATUS_LED_GREEN, 1); +} +#endif + +void __led_init (led_id_t mask, int state) +{ + __led_set (mask, state); +} + +void __led_toggle (led_id_t mask) +{ +#ifdef STATUS_LED_BIT + if (STATUS_LED_BIT & mask) { + if (STATUS_LED_ON == saved_state[0]) + __led_set(STATUS_LED_BIT, 0); + else + __led_set(STATUS_LED_BIT, 1); + } +#endif +#ifdef STATUS_LED_BIT1 + if (STATUS_LED_BIT1 & mask) { + if (STATUS_LED_ON == saved_state[1]) + __led_set(STATUS_LED_BIT1, 0); + else + __led_set(STATUS_LED_BIT1, 1); + } +#endif +} + +void __led_set (led_id_t mask, int state) +{ +#ifdef STATUS_LED_BIT + if (STATUS_LED_BIT & mask) { + if (!omap_request_gpio(BEAGLE_LED_USR0)) { + omap_set_gpio_direction(BEAGLE_LED_USR0, 0); + omap_set_gpio_dataout(BEAGLE_LED_USR0, state); + } + saved_state[0] = state; + } +#endif +#ifdef STATUS_LED_BIT1 + if (STATUS_LED_BIT1 & mask) { + if (!omap_request_gpio(BEAGLE_LED_USR1)) { + omap_set_gpio_direction(BEAGLE_LED_USR1, 0); + omap_set_gpio_dataout(BEAGLE_LED_USR1, state); + } + saved_state[1] = state; + } +#endif +} + -- 1.5.6.4