OMAP hwmod: add names to module MPU IRQ lines
Replace the existing u8 array of module MPU IRQ lines with a struct
that includes a name - similar to the existing struct
omap_hwmod_dma_info. Device drivers can then use
platform_get_resource_byname() to retrieve specific IRQs without nasty
dependencies on array ordering.
Thanks to Benoît Cousson <b-cousson@ti.com> and Kevin Hilman
<khilman@deeprootsystems.com> for feedback on this approach.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index b01da1e..61d220c 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1386,8 +1386,9 @@
/* For each IRQ, DMA, memory area, fill in array.*/
for (i = 0; i < oh->mpu_irqs_cnt; i++) {
- (res + r)->start = *(oh->mpu_irqs + i);
- (res + r)->end = *(oh->mpu_irqs + i);
+ (res + r)->name = (oh->mpu_irqs + i)->name;
+ (res + r)->start = (oh->mpu_irqs + i)->irq;
+ (res + r)->end = (oh->mpu_irqs + i)->irq;
(res + r)->flags = IORESOURCE_IRQ;
r++;
}
diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h
index 643a972..007935a 100644
--- a/arch/arm/plat-omap/include/plat/omap_hwmod.h
+++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h
@@ -64,7 +64,21 @@
/**
- * struct omap_hwmod_dma_info - MPU address space handled by the hwmod
+ * struct omap_hwmod_irq_info - MPU IRQs used by the hwmod
+ * @name: name of the IRQ channel (module local name)
+ * @irq_ch: IRQ channel ID
+ *
+ * @name should be something short, e.g., "tx" or "rx". It is for use
+ * by platform_get_resource_byname(). It is defined locally to the
+ * hwmod.
+ */
+struct omap_hwmod_irq_info {
+ const char *name;
+ u16 irq;
+};
+
+/**
+ * struct omap_hwmod_dma_info - DMA channels used by the hwmod
* @name: name of the DMA channel (module local name)
* @dma_ch: DMA channel ID
*
@@ -379,7 +393,7 @@
struct omap_hwmod {
const char *name;
struct omap_device *od;
- u8 *mpu_irqs;
+ struct omap_hwmod_irq_info *mpu_irqs;
struct omap_hwmod_dma_info *sdma_chs;
union {
struct omap_hwmod_omap2_prcm omap2;