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Beagle Convert the board version detection to use the OMAP3 GPIO interface.

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There is no new functionality in the change.

This change is a conversion from the using raw register access to using
the OMAP3 GPIO API described in doc/README.omap3.

Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
Acked-by: Dirk Behme <dirk.behme@googlemail.com>
This commit is contained in:
Tom Rix 2009-06-03 01:53:57 -05:00 committed by Wolfgang Denk
parent 7caa13fdd2
commit 718763c474
1 changed files with 16 additions and 12 deletions
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28
board/omap3/beagle/beagle.c
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@ -33,6 +33,7 @@
#include <asm/io.h>
#include <asm/arch/mux.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/gpio.h>
#include <asm/mach-types.h>
#include "beagle.h"
@ -57,7 +58,7 @@ int board_init(void)
/*
* Routine: beagle_get_revision
* Description: Return revision of the BeagleBoard this code is running on.
* Description: Return the revision of the BeagleBoard this code is running on.
* If it is a revision Ax/Bx board, this function returns 0,
* on a revision C board you will get a 1.
*/
@ -74,22 +75,25 @@ int beagle_get_revision(void)
*/
void beagle_identify(void)
{
gpio_t *gpio6_base = (gpio_t *)OMAP34XX_GPIO6_BASE;
beagle_revision_c = 0;
if (!omap_request_gpio(171)) {
unsigned int val;
/* Configure GPIO 171 as input */
writel(readl(&gpio6_base->oe) | GPIO11, &gpio6_base->oe);
omap_set_gpio_direction(171, 1);
val = omap_get_gpio_datain(171);
omap_free_gpio(171);
/* Get value of GPIO 171 */
beagle_revision_c = readl(&gpio6_base->datain) & BOARD_REVISION_MASK;
if (val)
beagle_revision_c = 0;
else
beagle_revision_c = 1;
}
printf("Board revision ");
if (beagle_revision_c) {
printf("Ax/Bx\n");
beagle_revision_c = 0;
} else {
if (beagle_revision_c)
printf("C\n");
beagle_revision_c = 1;
}
else
printf("Ax/Bx\n");
}
/*