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| author | Jean Pihet <j-pihet@ti.com> | 2012-04-24 09:26:40 +0400 |
|---|---|---|
| committer | Kevin Hilman <khilman@ti.com> | 2012-06-01 03:03:44 +0400 |
| commit | 50e4a7d0b26c86628300edf4625cc5ff16a7a227 (patch) | |
| tree | 80e493531abd6e27886a2a53fb0192c769168761 /include/linux/power | |
| parent | 1fcd3069d4944ad0532f41fbc4957ba24552a92f (diff) | |
| download | linux-50e4a7d0b26c86628300edf4625cc5ff16a7a227.tar.xz | |
ARM: OMAP2+: SmartReflex: introduce a busy loop condition test macro
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@ti.com>
Signed-off-by: J Keerthy <j-keerthy@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'include/linux/power')
| -rw-r--r-- | include/linux/power/smartreflex.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/include/linux/power/smartreflex.h b/include/linux/power/smartreflex.h index 884eaeea96be..78b795ea2709 100644 --- a/include/linux/power/smartreflex.h +++ b/include/linux/power/smartreflex.h @@ -22,7 +22,7 @@ #include <linux/types.h> #include <linux/platform_device.h> - +#include <linux/delay.h> #include <plat/voltage.h> /* @@ -168,6 +168,27 @@ struct omap_sr { }; /** + * 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 * |