diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-12-11 16:51:39 +0900 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-02-14 00:22:45 +0100 |
| commit | 025d982079502b1d6c7c428504eb64c5059a2e80 (patch) | |
| tree | f6e83de7a0dcb26708db5db7f284d608df11c72e /drivers/mfd/wm5102-tables.c | |
| parent | 0101e53cbb1c653738de8dfddc80c0faa5a4fd39 (diff) | |
| download | lwn-025d982079502b1d6c7c428504eb64c5059a2e80.tar.gz lwn-025d982079502b1d6c7c428504eb64c5059a2e80.zip | |
mfd: wm5102: Mark only extant DSP registers volatile
Since regmap sometimes uses volatile as a proxy for readable simply
having a blanket condition can mark too many registers as readable.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/wm5102-tables.c')
| -rw-r--r-- | drivers/mfd/wm5102-tables.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/mfd/wm5102-tables.c b/drivers/mfd/wm5102-tables.c index 1133a64c2dc9..ee0a109f5ce9 100644 --- a/drivers/mfd/wm5102-tables.c +++ b/drivers/mfd/wm5102-tables.c @@ -1831,9 +1831,6 @@ static bool wm5102_readable_register(struct device *dev, unsigned int reg) static bool wm5102_volatile_register(struct device *dev, unsigned int reg) { - if (reg > 0xffff) - return true; - switch (reg) { case ARIZONA_SOFTWARE_RESET: case ARIZONA_DEVICE_REVISION: @@ -1878,7 +1875,13 @@ static bool wm5102_volatile_register(struct device *dev, unsigned int reg) case ARIZONA_MIC_DETECT_3: return true; default: - return false; + if ((reg >= 0x100000 && reg < 0x106000) || + (reg >= 0x180000 && reg < 0x180800) || + (reg >= 0x190000 && reg < 0x194800) || + (reg >= 0x1a8000 && reg < 0x1a9800)) + return true; + else + return false; } } |