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authorDaniel Gorsulowski <Daniel.Gorsulowski@esd.eu>2009-06-30 23:03:33 +0200
committerJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2009-07-06 21:52:43 +0200
commit45627fce18139a74e0755124d27376b520db156c (patch)
tree042d853f683b29acb04795b1cc7ee6a6846573e3
parent2e23008e5dbde7fe4c4758bee5a393e1db796cdf (diff)
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at91: Add CAN init function
To enable CAN init, CONFIG_CAN has to be defined in the board config file and at91_can_hw_init() has to be called in the board specific code. CAN is available on AT91SAM9263 and AT91CAP9 SoC. Signed-off-by: Daniel Gorsulowski <Daniel.Gorsulowski@esd.eu>
-rw-r--r--cpu/arm926ejs/at91/at91cap9_devices.c15
-rw-r--r--cpu/arm926ejs/at91/at91sam9263_devices.c15
-rw-r--r--include/asm-arm/arch-at91/at91_common.h1
3 files changed, 31 insertions, 0 deletions
diff --git a/cpu/arm926ejs/at91/at91cap9_devices.c b/cpu/arm926ejs/at91/at91cap9_devices.c
index c0024ac..39e405f 100644
--- a/cpu/arm926ejs/at91/at91cap9_devices.c
+++ b/cpu/arm926ejs/at91/at91cap9_devices.c
@@ -3,6 +3,10 @@
* Stelian Pop <stelian.pop@leadtechdesign.com>
* Lead Tech Design <www.leadtechdesign.com>
*
+ * (C) Copyright 2009
+ * Daniel Gorsulowski <daniel.gorsulowski@esd.eu>
+ * esd electronic system design gmbh <www.esd.eu>
+ *
* See file CREDITS for list of people who contributed to this
* project.
*
@@ -174,3 +178,14 @@ void at91_macb_hw_init(void)
#endif
}
#endif
+
+#ifdef CONFIG_AT91_CAN
+void at91_can_hw_init(void)
+{
+ at91_set_A_periph(AT91_PIN_PA12, 0); /* CAN_TX */
+ at91_set_A_periph(AT91_PIN_PA13, 1); /* CAN_RX */
+
+ /* Enable clock */
+ at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_CAN);
+}
+#endif
diff --git a/cpu/arm926ejs/at91/at91sam9263_devices.c b/cpu/arm926ejs/at91/at91sam9263_devices.c
index 0f2613e..f72efdf 100644
--- a/cpu/arm926ejs/at91/at91sam9263_devices.c
+++ b/cpu/arm926ejs/at91/at91sam9263_devices.c
@@ -3,6 +3,10 @@
* Stelian Pop <stelian.pop@leadtechdesign.com>
* Lead Tech Design <www.leadtechdesign.com>
*
+ * (C) Copyright 2009
+ * Daniel Gorsulowski <daniel.gorsulowski@esd.eu>
+ * esd electronic system design gmbh <www.esd.eu>
+ *
* See file CREDITS for list of people who contributed to this
* project.
*
@@ -182,3 +186,14 @@ void at91_uhp_hw_init(void)
at91_set_gpio_output(AT91_PIN_PA24, 0);
}
#endif
+
+#ifdef CONFIG_AT91_CAN
+void at91_can_hw_init(void)
+{
+ at91_set_A_periph(AT91_PIN_PA13, 0); /* CAN_TX */
+ at91_set_A_periph(AT91_PIN_PA14, 1); /* CAN_RX */
+
+ /* Enable clock */
+ at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9263_ID_CAN);
+}
+#endif
diff --git a/include/asm-arm/arch-at91/at91_common.h b/include/asm-arm/arch-at91/at91_common.h
index 9c4e019..01840ee 100644
--- a/include/asm-arm/arch-at91/at91_common.h
+++ b/include/asm-arm/arch-at91/at91_common.h
@@ -25,6 +25,7 @@
#ifndef AT91_COMMON_H
#define AT91_COMMON_H
+void at91_can_hw_init(void);
void at91_macb_hw_init(void);
void at91_serial_hw_init(void);
void at91_serial0_hw_init(void);