LinuxLists.cc - [PATCH v1 3/7] iio: light: vcnl4000: Add als

2023-05-08 07:31:45

Subject: [PATCH v1 3/7] iio: light: vcnl4000: Add als_it for vcnl4040/4200

Add illumination integration time for vcnl4040 and vcnl4200.
Add read/write attribute for illumination integration time and read
attribute for available integration times.

Signed-off-by: Astrid Rost <[email protected]>
---
drivers/iio/light/vcnl4000.c | 140 ++++++++++++++++++++++++++++++++---
1 file changed, 129 insertions(+), 11 deletions(-)

diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
index e14475070ac3..65b42da9ffa8 100644
--- a/drivers/iio/light/vcnl4000.c
+++ b/drivers/iio/light/vcnl4000.c
@@ -80,6 +80,7 @@
#define VCNL4000_SELF_TIMED_EN BIT(0) /* start self-timed measurement */

#define VCNL4040_ALS_CONF_ALS_SHUTDOWN BIT(0)
+#define VCNL4040_ALS_CONF_IT GENMASK(7, 6) /* Ambient integration time */
#define VCNL4040_PS_CONF1_PS_SHUTDOWN BIT(0)
#define VCNL4040_PS_CONF2_PS_IT GENMASK(3, 1) /* Proximity integration time */
#define VCNL4040_PS_CONF2_PS_INT GENMASK(9, 8) /* Proximity interrupt mode */
@@ -133,6 +134,20 @@ static const int vcnl4200_ps_it_times[][2] = {
{0, 864},
};

+static const int vcnl4040_als_it_times[][2] = {
+ {0, 80000},
+ {0, 160000},
+ {0, 320000},
+ {0, 640000},
+};
+
+static const int vcnl4200_als_it_times[][2] = {
+ {0, 50000},
+ {0, 100000},
+ {0, 200000},
+ {0, 400000},
+};
+
#define VCNL4000_SLEEP_DELAY_MS 2000 /* before we enter pm_runtime_suspend */

enum vcnl4000_device_ids {
@@ -506,6 +521,80 @@ static int vcnl4000_set_pm_runtime_state(struct vcnl4000_data *data, bool on)
return ret;
}

+static int vcnl4040_read_als_it(struct vcnl4000_data *data, int *val, int *val2)
+{
+ int ret;
+ const int(*als_it_times)[][2];
+ int size;
+
+ if (data->id == VCNL4200) {
+ als_it_times = &vcnl4200_als_it_times;
+ size = ARRAY_SIZE(vcnl4200_als_it_times);
+ } else {
+ als_it_times = &vcnl4040_als_it_times;
+ size = ARRAY_SIZE(vcnl4040_als_it_times);
+ }
+
+ ret = i2c_smbus_read_word_data(data->client, VCNL4200_AL_CONF);
+ if (ret < 0)
+ return ret;
+
+ ret = FIELD_GET(VCNL4040_ALS_CONF_IT, ret);
+
+ if (ret >= size)
+ return -EINVAL;
+
+ *val = (*als_it_times)[ret][0];
+ *val2 = (*als_it_times)[ret][1];
+
+ return 0;
+}
+
+static ssize_t vcnl4040_write_als_it(struct vcnl4000_data *data, int val)
+{
+ unsigned int i;
+ int ret, index = -1;
+ u16 regval;
+ const int(*als_it_times)[][2];
+ int size;
+
+ if (data->id == VCNL4200) {
+ als_it_times = &vcnl4200_als_it_times;
+ size = ARRAY_SIZE(vcnl4200_als_it_times);
+ } else {
+ als_it_times = &vcnl4040_als_it_times;
+ size = ARRAY_SIZE(vcnl4040_als_it_times);
+ }
+
+ for (i = 0; i < size; i++) {
+ if (val == (*als_it_times)[i][1]) {
+ index = i;
+ break;
+ }
+ }
+
+ if (index < 0)
+ return -EINVAL;
+
+ data->vcnl4200_al.sampling_rate = ktime_set(0, val * 1200000);
+ data->al_scale = 12000000000 / val;
+
+ mutex_lock(&data->vcnl4000_lock);
+
+ ret = i2c_smbus_read_word_data(data->client, VCNL4200_AL_CONF);
+ if (ret < 0)
+ goto out;
+
+ regval = (ret & ~VCNL4040_ALS_CONF_IT) |
+ FIELD_PREP(VCNL4040_ALS_CONF_IT, index);
+ ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF,
+ regval);
+
+out:
+ mutex_unlock(&data->vcnl4000_lock);
+ return ret;
+}
+
static int vcnl4040_read_ps_it(struct vcnl4000_data *data, int *val, int *val2)
{
int ret;
@@ -616,9 +705,16 @@ static int vcnl4000_read_raw(struct iio_dev *indio_dev,
*val2 = data->al_scale;
return IIO_VAL_INT_PLUS_MICRO;
case IIO_CHAN_INFO_INT_TIME:
- if (chan->type != IIO_PROXIMITY)
+ switch (chan->type) {
+ case IIO_LIGHT:
+ ret = vcnl4040_read_als_it(data, val, val2);
+ break;
+ case IIO_PROXIMITY:
+ ret = vcnl4040_read_ps_it(data, val, val2);
+ break;
+ default:
return -EINVAL;
- ret = vcnl4040_read_ps_it(data, val, val2);
+ }
if (ret < 0)
return ret;
return IIO_VAL_INT_PLUS_MICRO;
@@ -637,9 +733,14 @@ static int vcnl4040_write_raw(struct iio_dev *indio_dev,
case IIO_CHAN_INFO_INT_TIME:
if (val != 0)
return -EINVAL;
- if (chan->type != IIO_PROXIMITY)
+ switch (chan->type) {
+ case IIO_LIGHT:
+ return vcnl4040_write_als_it(data, val2);
+ case IIO_PROXIMITY:
+ return vcnl4040_write_ps_it(data, val2);
+ default:
return -EINVAL;
- return vcnl4040_write_ps_it(data, val2);
+ }
default:
return -EINVAL;
}
@@ -654,12 +755,27 @@ static int vcnl4040_read_avail(struct iio_dev *indio_dev,

switch (mask) {
case IIO_CHAN_INFO_INT_TIME:
- if (data->id == VCNL4200) {
- *vals = (int *)vcnl4200_ps_it_times;
- *length = 2 * ARRAY_SIZE(vcnl4200_ps_it_times);
- } else {
- *vals = (int *)vcnl4040_ps_it_times;
- *length = 2 * ARRAY_SIZE(vcnl4040_ps_it_times);
+ switch (chan->type) {
+ case IIO_LIGHT:
+ if (data->id == VCNL4200) {
+ *vals = (int *)vcnl4200_als_it_times;
+ *length = 2 * ARRAY_SIZE(vcnl4200_als_it_times);
+ } else {
+ *vals = (int *)vcnl4040_als_it_times;
+ *length = 2 * ARRAY_SIZE(vcnl4040_als_it_times);
+ }
+ break;
+ case IIO_PROXIMITY:
+ if (data->id == VCNL4200) {
+ *vals = (int *)vcnl4200_ps_it_times;
+ *length = 2 * ARRAY_SIZE(vcnl4200_ps_it_times);
+ } else {
+ *vals = (int *)vcnl4040_ps_it_times;
+ *length = 2 * ARRAY_SIZE(vcnl4040_ps_it_times);
+ }
+ break;
+ default:
+ return -EINVAL;
}
*type = IIO_VAL_INT_PLUS_MICRO;
return IIO_AVAIL_LIST;
@@ -1289,7 +1405,9 @@ static const struct iio_chan_spec vcnl4040_channels[] = {
{
.type = IIO_LIGHT,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_SCALE),
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_INT_TIME),
+ .info_mask_separate_available = BIT(IIO_CHAN_INFO_INT_TIME),
}, {
.type = IIO_PROXIMITY,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
--
2.30.2

2023-05-08 15:25:57

by kernel test robot

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Subject: Re: [PATCH v1 3/7] iio: light: vcnl4000: Add als_it for vcnl4040/4200

Hi Astrid,

kernel test robot noticed the following build errors:

[auto build test ERROR on jic23-iio/togreg]
[also build test ERROR on linus/master v6.4-rc1 next-20230508]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Astrid-Rost/iio-light-vcnl4000-Add-proximity-ps_it-for-vcnl4200/20230508-161005
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link: https://lore.kernel.org/r/20230508070925.2123265-4-astrid.rost%40axis.com
patch subject: [PATCH v1 3/7] iio: light: vcnl4000: Add als_it for vcnl4040/4200
config: i386-randconfig-a016-20230508 (https://download.01.org/0day-ci/archive/20230508/[email protected]/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/intel-lab-lkp/linux/commit/6ff2e1cf084f5b3038f2d72110fb01f2a8353a34
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Astrid-Rost/iio-light-vcnl4000-Add-proximity-ps_it-for-vcnl4200/20230508-161005
git checkout 6ff2e1cf084f5b3038f2d72110fb01f2a8353a34
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=i386 olddefconfig
make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>
| Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

ld: drivers/iio/light/vcnl4000.o: in function `vcnl4040_write_als_it':
>> drivers/iio/light/vcnl4000.c:580: undefined reference to `__divdi3'

vim +580 drivers/iio/light/vcnl4000.c

552
553 static ssize_t vcnl4040_write_als_it(struct vcnl4000_data *data, int val)
554 {
555 unsigned int i;
556 int ret, index = -1;
557 u16 regval;
558 const int(*als_it_times)[][2];
559 int size;
560
561 if (data->id == VCNL4200) {
562 als_it_times = &vcnl4200_als_it_times;
563 size = ARRAY_SIZE(vcnl4200_als_it_times);
564 } else {
565 als_it_times = &vcnl4040_als_it_times;
566 size = ARRAY_SIZE(vcnl4040_als_it_times);
567 }
568
569 for (i = 0; i < size; i++) {
570 if (val == (*als_it_times)[i][1]) {
571 index = i;
572 break;
573 }
574 }
575
576 if (index < 0)
577 return -EINVAL;
578
579 data->vcnl4200_al.sampling_rate = ktime_set(0, val * 1200000);
> 580 data->al_scale = 12000000000 / val;
581
582 mutex_lock(&data->vcnl4000_lock);
583
584 ret = i2c_smbus_read_word_data(data->client, VCNL4200_AL_CONF);
585 if (ret < 0)
586 goto out;
587
588 regval = (ret & ~VCNL4040_ALS_CONF_IT) |
589 FIELD_PREP(VCNL4040_ALS_CONF_IT, index);
590 ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF,
591 regval);
592
593 out:
594 mutex_unlock(&data->vcnl4000_lock);
595 return ret;
596 }
597

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

2023-05-08 17:03:55

by kernel test robot

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