funnyos/arch/testarm/dev/tartc.c - diff

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Diff for /funnyos/arch/testarm/dev/tartc.c between version 1.1 and 1.2

-version 1.1, 2007/10/16 09:41:04
+version 1.2, 2007/10/29 15:10:34
 Line 3
 Line 3
 Line 3
   */
  #include <sys/types.h>
  #include <sys/device.h>
+ #include <sys/bus.h>
+ #include <arch/testarm/dev/tartcvar.h>
+ #include <arch/testarm/dev/tartcreg.h>
  #include <libkern/printf.h>
  /*
   * testarm Real Time Clock driver.
   */
+ int     tartc_attach(struct device *, uint32_t loc, uint8_t flags);
- /* TODO */
+ struct driver tartc_dr = {
+         sizeof(struct tartc_dd),
+         tartc_attach,
+         NULL
+ };
  int
- tartc_attach(struct device *self)
+ tartc_attach(struct device *self, uint32_t loc, uint8_t flags)
  {
+         struct tartc_dd *ddp = self->dv_devdata;
+         uint32_t seconds;
-         printf("testarm Real Time Clock\n");
+         /* acquire bus_handle from parent */
+         ddp->td_bushandlep = self->dv_parent->dv_aux;
+         /* save our location on parent (or use default if loc == 0) */
+         ddp->td_ioaddr = (loc != 0) ? loc : TARTC_REG_BASE;
+         /*
+          * Read seconds past Epoch.
+          */
+         /* trigger clock update on host */
+         bus_write_1(ddp->td_bushandlep, ddp->td_ioaddr + TARTC_OFF_CLOCKUPDATE, 1);
+         /* get seconds past Epoch */
+         seconds = bus_read_4(ddp->td_bushandlep, ddp->td_ioaddr + TARTC_OFF_READSECONDS);
+         printf("testarm Real Time Clock (%d seconds past Epoch)\n", seconds);
          return(0);

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