X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/0333697630a0235151e52d239630623b85cd2d9c..a4c9ead4b64bd4de307f375c2ff313a7a07a06e0:/lincan/src/msmcan.c

diff --git a/lincan/src/msmcan.c b/lincan/src/msmcan.c
index e9f68f5..573abaa 100644
--- a/lincan/src/msmcan.c
+++ b/lincan/src/msmcan.c
@@ -4,7 +4,7 @@
  * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
  * email:pisa@cmp.felk.cvut.cz
  * This software is released under the GPL-License.
- * Version lincan-0.2  9 Jul 2003
+ * Version lincan-0.3  17 Jun 2004
  */ 
 
 #include "../include/can.h"
@@ -63,6 +63,27 @@ int msmcan_reset(struct candevice_t *candev)
 	   registers of the card but the third in order to make a hard reset */
 	/* outb (1, msmcan_base + candev->res_addr); */
 
+
+	/* terrible MSMCAN reset design - best to comment out */
+	if(0) {
+		int tic=jiffies;
+		int tac;
+		
+		msmcan_write_register(iCTL_INI, chip->chip_base_addr+iCTL);
+		/*CLKOUT stopped (iCPU_CEN=0) */
+		msmcan_write_register(iCPU_DSC, chip->chip_base_addr+iCPU);
+		while(!(msmcan_read_register(chip->chip_base_addr+iCPU)&iCPU_CEN)){
+			tac=jiffies;
+			if((tac-tic)>HZ*2){
+				CANMSG("Unable to reset board\n");
+				return -EIO;
+			}
+			schedule();
+		}
+		
+	
+	}
+
 	can_disable_irq(chip->chip_irq);
 	msmcan_write_register(iCTL_INI, chip->chip_base_addr+iCTL);
 	can_enable_irq(chip->chip_irq);
@@ -110,7 +131,8 @@ int msmcan_init_chip_data(struct candevice_t *candev, int chipnr)
 	candev->chip[chipnr]->chip_base_addr=
 	    candev->io_addr << 16;
 	candev->chip[chipnr]->clock = 16000000;
-	candev->chip[chipnr]->int_cpu_reg = iCPU_DSC;
+	/* The CLKOUT has to be enabled to reset MSMCAN MAX1232 watchdog */
+	candev->chip[chipnr]->int_cpu_reg = iCPU_DSC | iCPU_CEN;
 	candev->chip[chipnr]->int_clk_reg = iCLK_SL1;
 	candev->chip[chipnr]->int_bus_reg = iBUS_CBY;
 
@@ -151,7 +173,7 @@ int msmcan_program_irq(struct candevice_t *candev)
  * on the CAN chip. You should only have to edit this function if your hardware
  * uses some specific write process.
  */
-void msmcan_write_register(unsigned char data, unsigned long address)
+void msmcan_write_register(unsigned data, unsigned long address)
 {
 	/* address is combination of base address shifted left by 16 and index */
 	can_spin_irqflags_t flags;