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update pl330 shutdown func

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This commit is contained in:
fang
2011-02-23 15:31:12 +08:00
parent 5af2c1f9ee
commit b1f1924fbe
1 changed files with 67 additions and 1 deletions
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68
arch/arm/mach-rk29/rk29-pl330.c
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@@ -1226,6 +1226,72 @@ static int pl330_remove(struct platform_device *pdev)
return 0;
}
static int pl330_shutdown(struct platform_device *pdev)
{
struct rk29_pl330_dmac *dmac, *d;
struct rk29_pl330_chan *ch;
unsigned long flags;
int del, found;
if (!pdev->dev.platform_data)
return -EINVAL;
spin_lock_irqsave(&res_lock, flags);
found = 0;
list_for_each_entry(d, &dmac_list, node)
if (d->pi->dev == &pdev->dev) {
found = 1;
break;
}
if (!found) {
spin_unlock_irqrestore(&res_lock, flags);
return 0;
}
dmac = d;
/* Remove all Channels that are managed only by this DMAC */
list_for_each_entry(ch, &chan_list, node) {
/* Only channels that are handled by this DMAC */
if (iface_of_dmac(dmac, ch->id))
del = 1;
else
continue;
/* Don't remove if some other DMAC has it too */
list_for_each_entry(d, &dmac_list, node)
if (d != dmac && iface_of_dmac(d, ch->id)) {
del = 0;
break;
}
if (del) {
//spin_unlock_irqrestore(&res_lock, flags);
if (!ch || chan_free(ch))
goto shutdown_exit;
/* Stop any active xfer, Flushe the queue and do callbacks */
pl330_chan_ctrl(ch->pl330_chan_id, PL330_OP_FLUSH);
//spin_lock_irqsave(&res_lock, flags);
list_del(&ch->node);
kfree(ch);
}
}
/* Remove the DMAC */
list_del(&dmac->node);
kfree(dmac);
shutdown_exit:
spin_unlock_irqrestore(&res_lock, flags);
return 0;
}
static struct platform_driver pl330_driver = {
.driver = {
.owner = THIS_MODULE,
@@ -1233,7 +1299,7 @@ static struct platform_driver pl330_driver = {
},
.probe = pl330_probe,
.remove = pl330_remove,
.shutdown = pl330_remove,/* test */
.shutdown = pl330_shutdown,/* test */
};
static int __init pl330_init(void)