diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-04-30 14:48:36 +0100 |
|---|---|---|
| committer | Samuel Ortiz <samuel@sortiz.org> | 2009-05-19 22:22:28 +0200 |
| commit | b126d113484886d900179b4ae55ea7fabe15f936 (patch) | |
| tree | 9499c97c8394a117e99910fd4d165d03150bcb7f /drivers/mfd/wm8350-core.c | |
| parent | 279e677faa775ad16e75c32e1bf4a37f8158bc61 (diff) | |
mfd: Keep a cache of WM8350 volatile values
Due to the way that the WM8350 audio driver handles CODEC_ENA many of
the WM8350 audio registers are marked as volatile when they aren't
actually so. Allow the audio driver to see a cache of these values for
inspection during interrupt context.
To do this we need to stop satisfying any bits from volatile registers
from cache - there's no real benefit from doing so anyway, we did the
read already.
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 | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/mfd/wm8350-core.c b/drivers/mfd/wm8350-core.c index c2be3088e2e1..fe24079387c5 100644 --- a/drivers/mfd/wm8350-core.c +++ b/drivers/mfd/wm8350-core.c @@ -79,10 +79,6 @@ static int wm8350_phys_read(struct wm8350 *wm8350, u8 reg, int num_regs, /* Cache is CPU endian */ dest[i - reg] = be16_to_cpu(dest[i - reg]); - /* Satisfy non-volatile bits from cache */ - dest[i - reg] &= wm8350_reg_io_map[i].vol; - dest[i - reg] |= wm8350->reg_cache[i]; - /* Mask out non-readable bits */ dest[i - reg] &= wm8350_reg_io_map[i].readable; } @@ -182,9 +178,6 @@ static int wm8350_write(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *src) (wm8350->reg_cache[i] & ~wm8350_reg_io_map[i].writable) | src[i - reg]; - /* Don't store volatile bits */ - wm8350->reg_cache[i] &= ~wm8350_reg_io_map[i].vol; - src[i - reg] = cpu_to_be16(src[i - reg]); } @@ -1261,7 +1254,6 @@ static int wm8350_create_cache(struct wm8350 *wm8350, int type, int mode) (i < WM8350_CLOCK_CONTROL_1 || i > WM8350_AIF_TEST)) { value = be16_to_cpu(wm8350->reg_cache[i]); value &= wm8350_reg_io_map[i].readable; - value &= ~wm8350_reg_io_map[i].vol; wm8350->reg_cache[i] = value; } else wm8350->reg_cache[i] = reg_map[i]; |