[PATCH] mfd: Enable rbtree cache for wm831x devices

[PATCH] mfd: Enable rbtree cache for wm831x devices

[Mark Brown]

Most useful with the regulators where we're doing a lot of read/modify/write
updates in potentially performance critical paths.  Providing some defaults
would make this slightly better but this is a win right now.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---

Samuel, this depends on the regmap code in -next so I'd like to merge
it via regmap if that's OK with you?

 drivers/mfd/wm831x-core.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index e758c89..0a2b8d4 100644
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -1602,6 +1602,8 @@ struct regmap_config wm831x_regmap_config = {
 	.reg_bits = 16,
 	.val_bits = 16,
 
+	.cache_type = REGCACHE_RBTREE,
+
 	.max_register = WM831X_DBE_CHECK_DATA,
 	.readable_reg = wm831x_reg_readable,
 	.writeable_reg = wm831x_reg_writeable,
-- 
1.7.6.3

Re: [PATCH] mfd: Enable rbtree cache for wm831x devices

[Samuel Ortiz]

Hi Mark,

On Fri, Oct 14, 2011 at 09:06:26PM +0100, Mark Brown wrote:
> Most useful with the regulators where we're doing a lot of read/modify/write
> updates in potentially performance critical paths.  Providing some defaults
> would make this slightly better but this is a win right now.
> 
> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
> ---
> 
> Samuel, this depends on the regmap code in -next so I'd like to merge
> it via regmap if that's OK with you?
I'm fine with it:
Acked-by: Samuel Ortiz <sameo@linux.intel.com>

Cheers,
Samuel.

-- 
Intel Open Source Technology Centre
http://oss.intel.com/