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authorWolfgang Denk <wd@pollux.denx.de>2005-08-19 00:08:55 +0200
committerWolfgang Denk <wd@pollux.denx.de>2005-08-19 00:08:55 +0200
commit601aed1e8f90c7e9a17f7e448cc21969d821bf50 (patch)
treee159904ae1eae4828c31862eab15712ec4c0c83e /board/cmc_pu2
parentdbc5819098a74cb290e40652284f59f333df389e (diff)
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Add automatic HW detection for another CMC_PU2 variant
Patch by Martin Krause, 20 Apr 2005
Diffstat (limited to 'board/cmc_pu2')
-rw-r--r--board/cmc_pu2/cmc_pu2.c23
1 files changed, 18 insertions, 5 deletions
diff --git a/board/cmc_pu2/cmc_pu2.c b/board/cmc_pu2/cmc_pu2.c
index 8e0f6d3..e54ca9c 100644
--- a/board/cmc_pu2/cmc_pu2.c
+++ b/board/cmc_pu2/cmc_pu2.c
@@ -35,8 +35,9 @@
/*
* Miscelaneous platform dependent initialisations
*/
-#define CMC_BASIC 1
+#define CMC_HP_BASIC 1
#define CMC_PU2 2
+#define CMC_BASIC 4
int hw_detect (void);
@@ -74,14 +75,14 @@ int board_init (void)
/*
* On CMC-PU2 board configure PB3-PB6 to input without pull ups to
* clear the duo LEDs (the external pull downs assure a proper
- * signal). On CMC-BASIC set PB3-PB6 to output and drive it
- * high, to configure current meassurement on AINx.
+ * signal). On CMC-BASIC and CMC-HP-BASIC set PB3-PB6 to output and
+ * drive it high, to configure current measurement on AINx.
*/
if (hw_detect() & CMC_PU2) {
piob->PIO_ODR = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
AT91C_PIO_PB5 | AT91C_PIO_PB6;
}
- else if (hw_detect() & CMC_BASIC) {
+ else if ((hw_detect() & CMC_BASIC) || (hw_detect() & CMC_HP_BASIC)) {
piob->PIO_SODR = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
AT91C_PIO_PB5 | AT91C_PIO_PB6;
piob->PIO_OER = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
@@ -119,6 +120,8 @@ int checkboard (void)
puts ("Board: CMC-PU2 (Rittal GmbH)\n");
else if (hw_detect() & CMC_BASIC)
puts ("Board: CMC-BASIC (Rittal GmbH)\n");
+ else if (hw_detect() & CMC_HP_BASIC)
+ puts ("Board: CMC-HP-BASIC (Rittal GmbH)\n");
else
puts ("Board: unknown\n");
return 0;
@@ -135,7 +138,17 @@ int hw_detect (void)
pio->PIO_ODR = AT91C_PIO_PB12;
pio->PIO_PPUDR = AT91C_PIO_PB12;
pio->PIO_PER = AT91C_PIO_PB12;
+
+ /* configure PB13 as input without pull up */
+ pio->PIO_ODR = AT91C_PIO_PB13;
+ pio->PIO_PPUDR = AT91C_PIO_PB13;
+ pio->PIO_PER = AT91C_PIO_PB13;
/* read board identification pin */
- return ((pio->PIO_PDSR & AT91C_PIO_PB12) ? CMC_PU2 : CMC_BASIC);
+ if (pio->PIO_PDSR & AT91C_PIO_PB12)
+ return ((pio->PIO_PDSR & AT91C_PIO_PB13)
+ ? CMC_PU2 : 0);
+ else
+ return ((pio->PIO_PDSR & AT91C_PIO_PB13)
+ ? CMC_HP_BASIC : CMC_BASIC);
}