MIPS: Alchemy: Stop IRQ name sharing
Eliminate the sharing of IRQ names among the differenct Alchemy
variants. IRQ numbers need no longer be hidden behind a
CONFIG_SOC_AU1XXX symbol: step 1 in my quest to make the Alchemy
code less reliant on a hardcoded subtype.
This patch also renames the GPIO irq number constants. It's really
an interrupt line, NOT a GPIO number!
Code which relied on certain irq numbers to have the same name
across all supported cpu subtypes is changed to determine current
cpu subtype at runtime; in some places this isn't possible so
a "compat" symbol is used.
Run-tested on DB1200.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/alchemy/common/dma.c b/arch/mips/alchemy/common/dma.c
index d6fbda2..d527887 100644
--- a/arch/mips/alchemy/common/dma.c
+++ b/arch/mips/alchemy/common/dma.c
@@ -29,6 +29,8 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
+
+#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -188,17 +190,14 @@
dev = &dma_dev_table[dev_id];
if (irqhandler) {
- chan->irq = AU1000_DMA_INT_BASE + i;
chan->irq_dev = irq_dev_id;
ret = request_irq(chan->irq, irqhandler, irqflags, dev_str,
chan->irq_dev);
if (ret) {
- chan->irq = 0;
chan->irq_dev = NULL;
return ret;
}
} else {
- chan->irq = 0;
chan->irq_dev = NULL;
}
@@ -226,13 +225,40 @@
}
disable_dma(dmanr);
- if (chan->irq)
+ if (chan->irq_dev)
free_irq(chan->irq, chan->irq_dev);
- chan->irq = 0;
chan->irq_dev = NULL;
chan->dev_id = -1;
}
EXPORT_SYMBOL(free_au1000_dma);
+static int __init au1000_dma_init(void)
+{
+ int base, i;
+
+ switch (alchemy_get_cputype()) {
+ case ALCHEMY_CPU_AU1000:
+ base = AU1000_DMA_INT_BASE;
+ break;
+ case ALCHEMY_CPU_AU1500:
+ base = AU1500_DMA_INT_BASE;
+ break;
+ case ALCHEMY_CPU_AU1100:
+ base = AU1100_DMA_INT_BASE;
+ break;
+ default:
+ goto out;
+ }
+
+ for (i = 0; i < NUM_AU1000_DMA_CHANNELS; i++)
+ au1000_dma_table[i].irq = base + i;
+
+ printk(KERN_INFO "Alchemy DMA initialized\n");
+
+out:
+ return 0;
+}
+arch_initcall(au1000_dma_init);
+
#endif /* AU1000 AU1500 AU1100 */