diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-06-03 13:37:22 +0100 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-07-09 00:16:10 +0200 |
| commit | 52b461b86a9f6c7a86bdcb858e1bbef089fbe6a0 (patch) | |
| tree | 9c839b3ce945fb75249d0be0cbde503b44334351 /drivers/mfd/wm8350-core.c | |
| parent | b0ab907d325f99054eb2700a8f8c50776ebfeaf9 (diff) | |
| download | linux-52b461b86a9f6c7a86bdcb858e1bbef089fbe6a0.tar.bz2 | |
mfd: Add regmap cache support for wm8350
Use the most simple possible transformation on the existing code so keep
the table sitting around, further patches in this series will delete the
existing cache code - the main purpose of this patch is to ensure that
we always have a cache for bisection.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/wm8350-core.c')
| -rw-r--r-- | drivers/mfd/wm8350-core.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/drivers/mfd/wm8350-core.c b/drivers/mfd/wm8350-core.c index 8a9b11ca076a..fadcbbe9e2ba 100644 --- a/drivers/mfd/wm8350-core.c +++ b/drivers/mfd/wm8350-core.c @@ -32,9 +32,6 @@ #include <linux/mfd/wm8350/supply.h> #include <linux/mfd/wm8350/wdt.h> -#define WM8350_UNLOCK_KEY 0x0013 -#define WM8350_LOCK_KEY 0x0000 - #define WM8350_CLOCK_CONTROL_1 0x28 #define WM8350_AIF_TEST 0x74 @@ -295,15 +292,20 @@ EXPORT_SYMBOL_GPL(wm8350_block_write); */ int wm8350_reg_lock(struct wm8350 *wm8350) { - u16 key = WM8350_LOCK_KEY; int ret; + mutex_lock(®_lock_mutex); + ldbg(__func__); - mutex_lock(&io_mutex); - ret = wm8350_write(wm8350, WM8350_SECURITY, 1, &key); + + ret = wm8350_reg_write(wm8350, WM8350_SECURITY, WM8350_LOCK_KEY); if (ret) dev_err(wm8350->dev, "lock failed\n"); - mutex_unlock(&io_mutex); + + wm8350->unlocked = false; + + mutex_unlock(®_lock_mutex); + return ret; } EXPORT_SYMBOL_GPL(wm8350_reg_lock); @@ -319,15 +321,20 @@ EXPORT_SYMBOL_GPL(wm8350_reg_lock); */ int wm8350_reg_unlock(struct wm8350 *wm8350) { - u16 key = WM8350_UNLOCK_KEY; int ret; + mutex_lock(®_lock_mutex); + ldbg(__func__); - mutex_lock(&io_mutex); - ret = wm8350_write(wm8350, WM8350_SECURITY, 1, &key); + + ret = wm8350_reg_write(wm8350, WM8350_SECURITY, WM8350_UNLOCK_KEY); if (ret) dev_err(wm8350->dev, "unlock failed\n"); - mutex_unlock(&io_mutex); + + wm8350->unlocked = true; + + mutex_unlock(®_lock_mutex); + return ret; } EXPORT_SYMBOL_GPL(wm8350_reg_unlock); |