summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/prcm-common.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-omap2/prcm-common.h')
-rw-r--r--arch/arm/mach-omap2/prcm-common.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/prcm-common.h b/arch/arm/mach-omap2/prcm-common.h
index 0e841fd9498a..a8e4b582c527 100644
--- a/arch/arm/mach-omap2/prcm-common.h
+++ b/arch/arm/mach-omap2/prcm-common.h
@@ -428,6 +428,28 @@
#define MAX_IOPAD_LATCH_TIME 100
# ifndef __ASSEMBLER__
+#include <linux/delay.h>
+
+/**
+ * omap_test_timeout - busy-loop, testing a condition
+ * @cond: condition to test until it evaluates to true
+ * @timeout: maximum number of microseconds in the timeout
+ * @index: loop index (integer)
+ *
+ * Loop waiting for @cond to become true or until at least @timeout
+ * microseconds have passed. To use, define some integer @index in the
+ * calling code. After running, if @index == @timeout, then the loop has
+ * timed out.
+ */
+#define omap_test_timeout(cond, timeout, index) \
+({ \
+ for (index = 0; index < timeout; index++) { \
+ if (cond) \
+ break; \
+ udelay(1); \
+ } \
+})
+
/**
* struct omap_prcm_irq - describes a PRCM interrupt bit
* @name: a short name describing the interrupt type, e.g. "wkup" or "io"
@@ -458,6 +480,7 @@ struct omap_prcm_irq {
* @ocp_barrier: fn ptr to force buffered PRM writes to complete
* @save_and_clear_irqen: fn ptr to save and clear IRQENABLE regs
* @restore_irqen: fn ptr to save and clear IRQENABLE regs
+ * @reconfigure_io_chain: fn ptr to reconfigure IO chain
* @saved_mask: IRQENABLE regs are saved here during suspend
* @priority_mask: 1 bit per IRQ, set to 1 if omap_prcm_irq.priority = true
* @base_irq: base dynamic IRQ number, returned from irq_alloc_descs() in init
@@ -479,6 +502,7 @@ struct omap_prcm_irq_setup {
void (*ocp_barrier)(void);
void (*save_and_clear_irqen)(u32 *saved_mask);
void (*restore_irqen)(u32 *saved_mask);
+ void (*reconfigure_io_chain)(void);
u32 *saved_mask;
u32 *priority_mask;
int base_irq;