From: Jean Pihet <j-pihet@xxxxxx>
Now that omap_test_timeout is only accessible from mach-omap2/,
introduce a similar function for SR.
This change makes the SmartReflex implementation ready for the move
to drivers/.
Signed-off-by: Jean Pihet <j-pihet@xxxxxx>
---
arch/arm/mach-omap2/smartreflex.c | 12 ++++++------
arch/arm/mach-omap2/smartreflex.h | 23 +++++++++++++++++++++++
2 files changed, 29 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
index b2728a5..5f3faf3 100644
--- a/arch/arm/mach-omap2/smartreflex.c
+++ b/arch/arm/mach-omap2/smartreflex.c
@@ -290,9 +290,9 @@ static void sr_v1_disable(struct omap_sr *sr)
* Wait for SR to be disabled.
* wait until ERRCONFIG.MCUDISACKINTST = 1. Typical latency is 1us.
*/
- omap_test_timeout((sr_read_reg(sr, ERRCONFIG_V1) &
- ERRCONFIG_MCUDISACKINTST), SR_DISABLE_TIMEOUT,
- timeout);
+ sr_test_cond_timeout((sr_read_reg(sr, ERRCONFIG_V1) &
+ ERRCONFIG_MCUDISACKINTST), SR_DISABLE_TIMEOUT,
+ timeout);
if (timeout >= SR_DISABLE_TIMEOUT)
dev_warn(&sr->pdev->dev, "%s: Smartreflex disable timedout\n",
@@ -335,9 +335,9 @@ static void sr_v2_disable(struct omap_sr *sr)
* Wait for SR to be disabled.
* wait until IRQSTATUS.MCUDISACKINTST = 1. Typical latency is 1us.
*/
- omap_test_timeout((sr_read_reg(sr, IRQSTATUS) &
- IRQSTATUS_MCUDISABLEACKINT), SR_DISABLE_TIMEOUT,
- timeout);
+ sr_test_cond_timeout((sr_read_reg(sr, IRQSTATUS) &
+ IRQSTATUS_MCUDISABLEACKINT), SR_DISABLE_TIMEOUT,
+ timeout);
if (timeout >= SR_DISABLE_TIMEOUT)
dev_warn(&sr->pdev->dev, "%s: Smartreflex disable timedout\n",
diff --git a/arch/arm/mach-omap2/smartreflex.h b/arch/arm/mach-omap2/smartreflex.h
index 6f9b677..a87bac1 100644
--- a/arch/arm/mach-omap2/smartreflex.h
+++ b/arch/arm/mach-omap2/smartreflex.h
@@ -21,6 +21,7 @@
#define __ASM_ARM_OMAP_SMARTREFLEX_H
#include <linux/platform_device.h>
+#include <linux/delay.h>
#include <linux/power/smartreflex.h>
#include <plat/voltage.h>
@@ -144,6 +145,28 @@
#define OMAP3430_SR_ERRMAXLIMIT 0x02
/**
+ * test_cond_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.
+ *
+ * Copied from omap_test_timeout
+ */
+#define sr_test_cond_timeout(cond, timeout, index) \
+({ \
+ for (index = 0; index < timeout; index++) { \
+ if (cond) \
+ break; \
+ udelay(1); \
+ } \
+})
+
+/**
* struct omap_sr_pmic_data - Strucutre to be populated by pmic code to pass
* pmic specific info to smartreflex driver
*
--
1.7.5.4
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