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>
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 @@
#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