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| author |   Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2009-05-27 06:22:58 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-05-27 06:25:05 -0700 |
| commit | cbf806dd9302f3ff27ba496dae474b9da6b58873 (patch) | |
| tree | 083051bf123c7bc52bcdc53918a82fb1ca470067 /drivers/mfd | |
| parent | Input: add driver for EETI touchpanels (diff) | |
| download | linux-dev-cbf806dd9302f3ff27ba496dae474b9da6b58873.tar.xz linux-dev-cbf806dd9302f3ff27ba496dae474b9da6b58873.zip | |
Input: ucb1400 - move static function from header into core
it's a little too large for static line.
The ts is currently the only mainline user but Marek Vasut claims that
there is a battery driver in an ARM tree which also needs this function.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/ucb1400_core.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/mfd/ucb1400_core.c b/drivers/mfd/ucb1400_core.c index 178159e264ce..78c2135c5de6 100644 --- a/drivers/mfd/ucb1400_core.c +++ b/drivers/mfd/ucb1400_core.c @@ -23,6 +23,26 @@ #include <linux/module.h> #include <linux/ucb1400.h> +unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel, + int adcsync) +{ + unsigned int val; + + if (adcsync) + adc_channel |= UCB_ADC_SYNC_ENA; + + ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA | adc_channel); + ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA | adc_channel | + UCB_ADC_START); + + while (!((val = ucb1400_reg_read(ac97, UCB_ADC_DATA)) + & UCB_ADC_DAT_VALID)) + schedule_timeout_uninterruptible(1); + + return val & UCB_ADC_DAT_MASK; +} +EXPORT_SYMBOL_GPL(ucb1400_adc_read); + static int ucb1400_core_probe(struct device *dev) { int err; |