diff options
author | Jason Kridner <jkridner@beagleboard.org> | 2010-07-21 12:41:25 (GMT) |
---|---|---|
committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-09-04 09:36:20 (GMT) |
commit | f835ea7158025818d69384a7ebd8c3de0f10a9f7 (patch) | |
tree | ec47ec61fbb7be808a19295fcf1a4854e9c08139 /board | |
parent | f44047df3b365e0fdd9be367971ade81b9afdf15 (diff) | |
download | u-boot-fsl-qoriq-f835ea7158025818d69384a7ebd8c3de0f10a9f7.tar.xz |
BeagleBoard: Added userbutton command
Based on commit f1099c7c43caf5bac3bf6a65aa266fade4747072
Author: Greg Turner <gregturner@ti.com>
Date: Tue May 25 09:19:06 2010 -0500
New u-boot command for status of USER button on BeagleBoard-xM
Modified bootcmd to check the staus at boot time and set
filename of the boot script.
* Moved to a BeagleBoard specific file.
* Removed changes to default boot command from adding userbutton
command.
* Made to handle pre-xM boards.
* Flipped polarity of the return value to avoid confusion. Success (0)
is when the button is pressed. Failure (1) is when the button is NOT
pressed.
* Used latest revision getting function.
* Used latest macros for board revision.
* Added xM-C revision definition (optional, since it was default)
* updated default configuration with UserButton functionality
* Added a separate bootenv variable to load a user defined .txt file
* Added an example, showing how a different environment file can be loaded with
the user button pressed
Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Cc: Greg Turner <gregturner@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Diffstat (limited to 'board')
-rw-r--r-- | board/ti/beagle/beagle.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c index a958545..8dc8dfa 100644 --- a/board/ti/beagle/beagle.c +++ b/board/ti/beagle/beagle.c @@ -50,6 +50,7 @@ extern struct ehci_hccr *hccr; extern volatile struct ehci_hcor *hcor; #endif #include "beagle.h" +#include <command.h> #define pr_debug(fmt, args...) debug(fmt, ##args) @@ -446,3 +447,58 @@ int ehci_hcd_init(void) } #endif /* CONFIG_USB_EHCI */ + +/* + * This command returns the status of the user button on beagle xM + * Input - none + * Returns - 1 if button is held down + * 0 if button is not held down + */ +int do_userbutton (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + int button = 0; + int gpio; + + /* + * pass address parameter as argv[0] (aka command name), + * and all remaining args + */ + switch (get_board_revision()) { + case REVISION_AXBX: + case REVISION_CX: + case REVISION_C4: + gpio = 7; + break; + case REVISION_XM_A: + case REVISION_XM_B: + case REVISION_XM_C: + default: + gpio = 4; + break; + } + omap_request_gpio(gpio); + omap_set_gpio_direction(gpio, 1); + printf("The user button is currently "); + if(omap_get_gpio_datain(gpio)) + { + button = 1; + printf("PRESSED.\n"); + } + else + { + button = 0; + printf("NOT pressed.\n"); + } + + omap_free_gpio(gpio); + + return !button; +} + +/* -------------------------------------------------------------------- */ + +U_BOOT_CMD( + userbutton, CONFIG_SYS_MAXARGS, 1, do_userbutton, + "Return the status of the BeagleBoard USER button", + "" +); |