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Date: Tue, 24 Apr 2012 17:59:10 -0500
From: Jon Brenner <jbrenner@...sinc.com>
To: gregkh <gregkh@...uxfoundation.org>,
Jonathan Cameron <jic23@....ac.uk>
Cc: linux-iio <linux-iio@...r.kernel.org>,
Linux Kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH V9a] TAOS tsl2x7x
TAOS (version 9a) tsl2x7x driver change / bug fix.
Fixed - removed decimal multiplications.
Added missing 'static' declarations
Fixed _read_raw case logic to allow reading of _PROCESSED IIO_LIGHT
Replaced udelay with mdelay to accomodate eabi.
Signed-off-by: Jon Brenner <jbrenner@...sinc.com>
---
drivers/staging/iio/light/tsl2x7x_core.c | 26 ++++++++++++++++++--------
1 files changed, 18 insertions(+), 8 deletions(-)
diff --git a/drivers/staging/iio/light/tsl2x7x_core.c b/drivers/staging/iio/light/tsl2x7x_core.c
index ff44989..f3fc85a 100755
--- a/drivers/staging/iio/light/tsl2x7x_core.c
+++ b/drivers/staging/iio/light/tsl2x7x_core.c
@@ -130,6 +130,8 @@
(IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING) | \
IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING)),
+#define TSL2X7X_MIN_ITIME 3
+
/* TAOS txx2x7x Device family members */
enum {
tsl2571,
@@ -277,7 +279,7 @@ enum {
ALSPRX2,
};
-const u8 device_channel_config[] = {
+static const u8 device_channel_config[] = {
ALS,
PRX,
PRX,
@@ -778,7 +780,7 @@ static int tsl2x7x_chip_on(struct iio_dev *indio_dev)
}
}
- udelay(3000); /* Power-on settling time */
+ mdelay(3); /* Power-on settling time */
/* NOW enable the ADC
* initialize the desired mode of operation */
@@ -853,6 +855,7 @@ static int tsl2x7x_chip_off(struct iio_dev *indio_dev)
* put device back into proper state, and unlock
* resource.
*/
+static
int tsl2x7x_invoke_change(struct iio_dev *indio_dev)
{
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
@@ -1021,7 +1024,7 @@ static ssize_t tsl2x7x_als_time_show(struct device *dev,
int y, z;
y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
- z = y * 2.72;
+ z = y * TSL2X7X_MIN_ITIME;
y /= 1000;
z %= 1000;
@@ -1092,7 +1095,7 @@ static ssize_t tsl2x7x_als_persistence_show(struct device *dev,
/* Determine integration time */
y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
- z = y * 2.72;
+ z = y * TSL2X7X_MIN_ITIME;
filter_delay = z * (chip->tsl2x7x_settings.persistence & 0x0F);
y = (filter_delay / 1000);
z = (filter_delay % 1000);
@@ -1114,7 +1117,7 @@ static ssize_t tsl2x7x_als_persistence_store(struct device *dev,
result.fract /= 1000;
y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
- z = y * 2.72;
+ z = y * TSL2X7X_MIN_ITIME;
filter_delay =
DIV_ROUND_UP(((result.integer * 1000) + result.fract), z);
@@ -1138,7 +1141,7 @@ static ssize_t tsl2x7x_prox_persistence_show(struct device *dev,
/* Determine integration time */
y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
- z = y * 2.72;
+ z = y * TSL2X7X_MIN_ITIME;
filter_delay = z * ((chip->tsl2x7x_settings.persistence & 0xF0) >> 4);
y = (filter_delay / 1000);
z = (filter_delay % 1000);
@@ -1160,7 +1163,7 @@ static ssize_t tsl2x7x_prox_persistence_store(struct device *dev,
result.fract /= 1000;
y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
- z = y * 2.72;
+ z = y * TSL2X7X_MIN_ITIME;
filter_delay =
DIV_ROUND_UP(((result.integer * 1000) + result.fract), z);
@@ -1389,13 +1392,20 @@ static int tsl2x7x_read_raw(struct iio_dev *indio_dev,
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
switch (mask) {
- case IIO_CHAN_INFO_RAW:
+ case IIO_CHAN_INFO_PROCESSED:
switch (chan->type) {
case IIO_LIGHT:
tsl2x7x_get_lux(indio_dev);
*val = chip->als_cur_info.lux;
ret = IIO_VAL_INT;
break;
+ default:
+ return -EINVAL;
+ break;
+ }
+ break;
+ case IIO_CHAN_INFO_RAW:
+ switch (chan->type) {
case IIO_INTENSITY:
tsl2x7x_get_lux(indio_dev);
if (chan->channel == 0)
--
1.7.4.1
--
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