From 1543e317f1da31b75942316931e8f491a8920811 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 04 Jan 2024 10:08:02 +0000
Subject: [PATCH] disable FB
---
kernel/drivers/iio/light/vcnl4000.c | 931 +++++++++++++++++++++++++++++++++++++++++++++++++++++----
1 files changed, 861 insertions(+), 70 deletions(-)
diff --git a/kernel/drivers/iio/light/vcnl4000.c b/kernel/drivers/iio/light/vcnl4000.c
index a3fdffa..f4feb44 100644
--- a/kernel/drivers/iio/light/vcnl4000.c
+++ b/kernel/drivers/iio/light/vcnl4000.c
@@ -1,47 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
- * vcnl4000.c - Support for Vishay VCNL4000/4010/4020/4200 combined ambient
+ * vcnl4000.c - Support for Vishay VCNL4000/4010/4020/4040/4200 combined ambient
* light and proximity sensor
*
* Copyright 2012 Peter Meerwald <pmeerw@pmeerw.net>
- *
- * This file is subject to the terms and conditions of version 2 of
- * the GNU General Public License. See the file COPYING in the main
- * directory of this archive for more details.
+ * Copyright 2019 Pursim SPC
+ * Copyright 2020 Mathieu Othacehe <m.othacehe@gmail.com>
*
* IIO driver for:
* VCNL4000/10/20 (7-bit I2C slave address 0x13)
+ * VCNL4040 (7-bit I2C slave address 0x60)
* VCNL4200 (7-bit I2C slave address 0x51)
*
* TODO:
* allow to adjust IR current
- * proximity threshold and event handling
- * periodic ALS/proximity measurement (VCNL4010/20)
- * interrupts (VCNL4010/20, VCNL4200)
+ * interrupts (VCNL4040, VCNL4200)
*/
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/delay.h>
+#include <linux/pm_runtime.h>
+#include <linux/interrupt.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/events.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
#define VCNL4000_DRV_NAME "vcnl4000"
#define VCNL4000_PROD_ID 0x01
#define VCNL4010_PROD_ID 0x02 /* for VCNL4020, VCNL4010 */
+#define VCNL4040_PROD_ID 0x86
#define VCNL4200_PROD_ID 0x58
#define VCNL4000_COMMAND 0x80 /* Command register */
#define VCNL4000_PROD_REV 0x81 /* Product ID and Revision ID */
+#define VCNL4010_PROX_RATE 0x82 /* Proximity rate */
#define VCNL4000_LED_CURRENT 0x83 /* IR LED current for proximity mode */
#define VCNL4000_AL_PARAM 0x84 /* Ambient light parameter register */
+#define VCNL4010_ALS_PARAM 0x84 /* ALS rate */
#define VCNL4000_AL_RESULT_HI 0x85 /* Ambient light result register, MSB */
#define VCNL4000_AL_RESULT_LO 0x86 /* Ambient light result register, LSB */
#define VCNL4000_PS_RESULT_HI 0x87 /* Proximity result register, MSB */
#define VCNL4000_PS_RESULT_LO 0x88 /* Proximity result register, LSB */
#define VCNL4000_PS_MEAS_FREQ 0x89 /* Proximity test signal frequency */
+#define VCNL4010_INT_CTRL 0x89 /* Interrupt control */
#define VCNL4000_PS_MOD_ADJ 0x8a /* Proximity modulator timing adjustment */
+#define VCNL4010_LOW_THR_HI 0x8a /* Low threshold, MSB */
+#define VCNL4010_LOW_THR_LO 0x8b /* Low threshold, LSB */
+#define VCNL4010_HIGH_THR_HI 0x8c /* High threshold, MSB */
+#define VCNL4010_HIGH_THR_LO 0x8d /* High threshold, LSB */
+#define VCNL4010_ISR 0x8e /* Interrupt status */
#define VCNL4200_AL_CONF 0x00 /* Ambient light configuration */
#define VCNL4200_PS_CONF1 0x03 /* Proximity configuration */
@@ -49,15 +63,50 @@
#define VCNL4200_AL_DATA 0x09 /* Ambient light data */
#define VCNL4200_DEV_ID 0x0e /* Device ID, slave address and version */
+#define VCNL4040_DEV_ID 0x0c /* Device ID and version */
+
/* Bit masks for COMMAND register */
#define VCNL4000_AL_RDY BIT(6) /* ALS data ready? */
#define VCNL4000_PS_RDY BIT(5) /* proximity data ready? */
#define VCNL4000_AL_OD BIT(4) /* start on-demand ALS measurement */
#define VCNL4000_PS_OD BIT(3) /* start on-demand proximity measurement */
+#define VCNL4000_ALS_EN BIT(2) /* start ALS measurement */
+#define VCNL4000_PROX_EN BIT(1) /* start proximity measurement */
+#define VCNL4000_SELF_TIMED_EN BIT(0) /* start self-timed measurement */
+
+/* Bit masks for interrupt registers. */
+#define VCNL4010_INT_THR_SEL BIT(0) /* Select threshold interrupt source */
+#define VCNL4010_INT_THR_EN BIT(1) /* Threshold interrupt type */
+#define VCNL4010_INT_ALS_EN BIT(2) /* Enable on ALS data ready */
+#define VCNL4010_INT_PROX_EN BIT(3) /* Enable on proximity data ready */
+
+#define VCNL4010_INT_THR_HIGH 0 /* High threshold exceeded */
+#define VCNL4010_INT_THR_LOW 1 /* Low threshold exceeded */
+#define VCNL4010_INT_ALS 2 /* ALS data ready */
+#define VCNL4010_INT_PROXIMITY 3 /* Proximity data ready */
+
+#define VCNL4010_INT_THR \
+ (BIT(VCNL4010_INT_THR_LOW) | BIT(VCNL4010_INT_THR_HIGH))
+#define VCNL4010_INT_DRDY \
+ (BIT(VCNL4010_INT_PROXIMITY) | BIT(VCNL4010_INT_ALS))
+
+static const int vcnl4010_prox_sampling_frequency[][2] = {
+ {1, 950000},
+ {3, 906250},
+ {7, 812500},
+ {16, 625000},
+ {31, 250000},
+ {62, 500000},
+ {125, 0},
+ {250, 0},
+};
+
+#define VCNL4000_SLEEP_DELAY_MS 2000 /* before we enter pm_runtime_suspend */
enum vcnl4000_device_ids {
VCNL4000,
VCNL4010,
+ VCNL4040,
VCNL4200,
};
@@ -77,23 +126,36 @@
struct mutex vcnl4000_lock;
struct vcnl4200_channel vcnl4200_al;
struct vcnl4200_channel vcnl4200_ps;
+ uint32_t near_level;
};
struct vcnl4000_chip_spec {
const char *prod;
+ struct iio_chan_spec const *channels;
+ const int num_channels;
+ const struct iio_info *info;
+ bool irq_support;
int (*init)(struct vcnl4000_data *data);
int (*measure_light)(struct vcnl4000_data *data, int *val);
int (*measure_proximity)(struct vcnl4000_data *data, int *val);
+ int (*set_power_state)(struct vcnl4000_data *data, bool on);
};
static const struct i2c_device_id vcnl4000_id[] = {
{ "vcnl4000", VCNL4000 },
{ "vcnl4010", VCNL4010 },
{ "vcnl4020", VCNL4010 },
+ { "vcnl4040", VCNL4040 },
{ "vcnl4200", VCNL4200 },
{ }
};
MODULE_DEVICE_TABLE(i2c, vcnl4000_id);
+
+static int vcnl4000_set_power_state(struct vcnl4000_data *data, bool on)
+{
+ /* no suspend op */
+ return 0;
+}
static int vcnl4000_init(struct vcnl4000_data *data)
{
@@ -123,44 +185,104 @@
data->al_scale = 250000;
mutex_init(&data->vcnl4000_lock);
- return 0;
+ return data->chip_spec->set_power_state(data, true);
};
+
+static int vcnl4200_set_power_state(struct vcnl4000_data *data, bool on)
+{
+ u16 val = on ? 0 /* power on */ : 1 /* shut down */;
+ int ret;
+
+ ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF, val);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1, val);
+ if (ret < 0)
+ return ret;
+
+ if (on) {
+ /* Wait at least one integration cycle before fetching data */
+ data->vcnl4200_al.last_measurement = ktime_get();
+ data->vcnl4200_ps.last_measurement = ktime_get();
+ }
+
+ return 0;
+}
static int vcnl4200_init(struct vcnl4000_data *data)
{
- int ret;
+ int ret, id;
ret = i2c_smbus_read_word_data(data->client, VCNL4200_DEV_ID);
if (ret < 0)
return ret;
- if ((ret & 0xff) != VCNL4200_PROD_ID)
- return -ENODEV;
+ id = ret & 0xff;
+
+ if (id != VCNL4200_PROD_ID) {
+ ret = i2c_smbus_read_word_data(data->client, VCNL4040_DEV_ID);
+ if (ret < 0)
+ return ret;
+
+ id = ret & 0xff;
+
+ if (id != VCNL4040_PROD_ID)
+ return -ENODEV;
+ }
+
+ dev_dbg(&data->client->dev, "device id 0x%x", id);
data->rev = (ret >> 8) & 0xf;
- /* Set defaults and enable both channels */
- ret = i2c_smbus_write_byte_data(data->client, VCNL4200_AL_CONF, 0x00);
- if (ret < 0)
- return ret;
- ret = i2c_smbus_write_byte_data(data->client, VCNL4200_PS_CONF1, 0x00);
- if (ret < 0)
- return ret;
-
- data->al_scale = 24000;
data->vcnl4200_al.reg = VCNL4200_AL_DATA;
data->vcnl4200_ps.reg = VCNL4200_PS_DATA;
- /* Default wait time is 50ms, add 20% tolerance. */
- data->vcnl4200_al.sampling_rate = ktime_set(0, 60000 * 1000);
- /* Default wait time is 4.8ms, add 20% tolerance. */
- data->vcnl4200_ps.sampling_rate = ktime_set(0, 5760 * 1000);
- data->vcnl4200_al.last_measurement = ktime_set(0, 0);
- data->vcnl4200_ps.last_measurement = ktime_set(0, 0);
+ switch (id) {
+ case VCNL4200_PROD_ID:
+ /* Default wait time is 50ms, add 20% tolerance. */
+ data->vcnl4200_al.sampling_rate = ktime_set(0, 60000 * 1000);
+ /* Default wait time is 4.8ms, add 20% tolerance. */
+ data->vcnl4200_ps.sampling_rate = ktime_set(0, 5760 * 1000);
+ data->al_scale = 24000;
+ break;
+ case VCNL4040_PROD_ID:
+ /* Default wait time is 80ms, add 20% tolerance. */
+ data->vcnl4200_al.sampling_rate = ktime_set(0, 96000 * 1000);
+ /* Default wait time is 5ms, add 20% tolerance. */
+ data->vcnl4200_ps.sampling_rate = ktime_set(0, 6000 * 1000);
+ data->al_scale = 120000;
+ break;
+ }
mutex_init(&data->vcnl4200_al.lock);
mutex_init(&data->vcnl4200_ps.lock);
+ ret = data->chip_spec->set_power_state(data, true);
+ if (ret < 0)
+ return ret;
+
return 0;
};
+
+static int vcnl4000_read_data(struct vcnl4000_data *data, u8 data_reg, int *val)
+{
+ s32 ret;
+
+ ret = i2c_smbus_read_word_swapped(data->client, data_reg);
+ if (ret < 0)
+ return ret;
+
+ *val = ret;
+ return 0;
+}
+
+static int vcnl4000_write_data(struct vcnl4000_data *data, u8 data_reg, int val)
+{
+ if (val > U16_MAX)
+ return -ERANGE;
+
+ return i2c_smbus_write_word_swapped(data->client, data_reg, val);
+}
+
static int vcnl4000_measure(struct vcnl4000_data *data, u8 req_mask,
u8 rdy_mask, u8 data_reg, int *val)
@@ -192,12 +314,11 @@
goto fail;
}
- ret = i2c_smbus_read_word_swapped(data->client, data_reg);
+ ret = vcnl4000_read_data(data, data_reg, val);
if (ret < 0)
goto fail;
mutex_unlock(&data->vcnl4000_lock);
- *val = ret;
return 0;
@@ -257,37 +378,51 @@
return vcnl4200_measure(data, &data->vcnl4200_ps, val);
}
-static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
- [VCNL4000] = {
- .prod = "VCNL4000",
- .init = vcnl4000_init,
- .measure_light = vcnl4000_measure_light,
- .measure_proximity = vcnl4000_measure_proximity,
- },
- [VCNL4010] = {
- .prod = "VCNL4010/4020",
- .init = vcnl4000_init,
- .measure_light = vcnl4000_measure_light,
- .measure_proximity = vcnl4000_measure_proximity,
- },
- [VCNL4200] = {
- .prod = "VCNL4200",
- .init = vcnl4200_init,
- .measure_light = vcnl4200_measure_light,
- .measure_proximity = vcnl4200_measure_proximity,
- },
-};
+static int vcnl4010_read_proxy_samp_freq(struct vcnl4000_data *data, int *val,
+ int *val2)
+{
+ int ret;
-static const struct iio_chan_spec vcnl4000_channels[] = {
- {
- .type = IIO_LIGHT,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_SCALE),
- }, {
- .type = IIO_PROXIMITY,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ ret = i2c_smbus_read_byte_data(data->client, VCNL4010_PROX_RATE);
+ if (ret < 0)
+ return ret;
+
+ if (ret >= ARRAY_SIZE(vcnl4010_prox_sampling_frequency))
+ return -EINVAL;
+
+ *val = vcnl4010_prox_sampling_frequency[ret][0];
+ *val2 = vcnl4010_prox_sampling_frequency[ret][1];
+
+ return 0;
+}
+
+static bool vcnl4010_is_in_periodic_mode(struct vcnl4000_data *data)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(data->client, VCNL4000_COMMAND);
+ if (ret < 0)
+ return false;
+
+ return !!(ret & VCNL4000_SELF_TIMED_EN);
+}
+
+static int vcnl4000_set_pm_runtime_state(struct vcnl4000_data *data, bool on)
+{
+ struct device *dev = &data->client->dev;
+ int ret;
+
+ if (on) {
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0)
+ pm_runtime_put_noidle(dev);
+ } else {
+ pm_runtime_mark_last_busy(dev);
+ ret = pm_runtime_put_autosuspend(dev);
}
-};
+
+ return ret;
+}
static int vcnl4000_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
@@ -298,20 +433,26 @@
switch (mask) {
case IIO_CHAN_INFO_RAW:
+ ret = vcnl4000_set_pm_runtime_state(data, true);
+ if (ret < 0)
+ return ret;
+
switch (chan->type) {
case IIO_LIGHT:
ret = data->chip_spec->measure_light(data, val);
- if (ret < 0)
- return ret;
- return IIO_VAL_INT;
+ if (!ret)
+ ret = IIO_VAL_INT;
+ break;
case IIO_PROXIMITY:
ret = data->chip_spec->measure_proximity(data, val);
- if (ret < 0)
- return ret;
- return IIO_VAL_INT;
+ if (!ret)
+ ret = IIO_VAL_INT;
+ break;
default:
- return -EINVAL;
+ ret = -EINVAL;
}
+ vcnl4000_set_pm_runtime_state(data, false);
+ return ret;
case IIO_CHAN_INFO_SCALE:
if (chan->type != IIO_LIGHT)
return -EINVAL;
@@ -324,9 +465,549 @@
}
}
+static int vcnl4010_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
+{
+ int ret;
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ case IIO_CHAN_INFO_SCALE:
+ ret = iio_device_claim_direct_mode(indio_dev);
+ if (ret)
+ return ret;
+
+ /* Protect against event capture. */
+ if (vcnl4010_is_in_periodic_mode(data)) {
+ ret = -EBUSY;
+ } else {
+ ret = vcnl4000_read_raw(indio_dev, chan, val, val2,
+ mask);
+ }
+
+ iio_device_release_direct_mode(indio_dev);
+ return ret;
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ switch (chan->type) {
+ case IIO_PROXIMITY:
+ ret = vcnl4010_read_proxy_samp_freq(data, val, val2);
+ if (ret < 0)
+ return ret;
+ return IIO_VAL_INT_PLUS_MICRO;
+ default:
+ return -EINVAL;
+ }
+ default:
+ return -EINVAL;
+ }
+}
+
+static int vcnl4010_read_avail(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ const int **vals, int *type, int *length,
+ long mask)
+{
+ switch (mask) {
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ *vals = (int *)vcnl4010_prox_sampling_frequency;
+ *type = IIO_VAL_INT_PLUS_MICRO;
+ *length = 2 * ARRAY_SIZE(vcnl4010_prox_sampling_frequency);
+ return IIO_AVAIL_LIST;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int vcnl4010_write_proxy_samp_freq(struct vcnl4000_data *data, int val,
+ int val2)
+{
+ unsigned int i;
+ int index = -1;
+
+ for (i = 0; i < ARRAY_SIZE(vcnl4010_prox_sampling_frequency); i++) {
+ if (val == vcnl4010_prox_sampling_frequency[i][0] &&
+ val2 == vcnl4010_prox_sampling_frequency[i][1]) {
+ index = i;
+ break;
+ }
+ }
+
+ if (index < 0)
+ return -EINVAL;
+
+ return i2c_smbus_write_byte_data(data->client, VCNL4010_PROX_RATE,
+ index);
+}
+
+static int vcnl4010_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val, int val2, long mask)
+{
+ int ret;
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+
+ ret = iio_device_claim_direct_mode(indio_dev);
+ if (ret)
+ return ret;
+
+ /* Protect against event capture. */
+ if (vcnl4010_is_in_periodic_mode(data)) {
+ ret = -EBUSY;
+ goto end;
+ }
+
+ switch (mask) {
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ switch (chan->type) {
+ case IIO_PROXIMITY:
+ ret = vcnl4010_write_proxy_samp_freq(data, val, val2);
+ goto end;
+ default:
+ ret = -EINVAL;
+ goto end;
+ }
+ default:
+ ret = -EINVAL;
+ goto end;
+ }
+
+end:
+ iio_device_release_direct_mode(indio_dev);
+ return ret;
+}
+
+static int vcnl4010_read_event(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ enum iio_event_info info,
+ int *val, int *val2)
+{
+ int ret;
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+
+ switch (info) {
+ case IIO_EV_INFO_VALUE:
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ ret = vcnl4000_read_data(data, VCNL4010_HIGH_THR_HI,
+ val);
+ if (ret < 0)
+ return ret;
+ return IIO_VAL_INT;
+ case IIO_EV_DIR_FALLING:
+ ret = vcnl4000_read_data(data, VCNL4010_LOW_THR_HI,
+ val);
+ if (ret < 0)
+ return ret;
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ default:
+ return -EINVAL;
+ }
+}
+
+static int vcnl4010_write_event(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ enum iio_event_info info,
+ int val, int val2)
+{
+ int ret;
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+
+ switch (info) {
+ case IIO_EV_INFO_VALUE:
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ ret = vcnl4000_write_data(data, VCNL4010_HIGH_THR_HI,
+ val);
+ if (ret < 0)
+ return ret;
+ return IIO_VAL_INT;
+ case IIO_EV_DIR_FALLING:
+ ret = vcnl4000_write_data(data, VCNL4010_LOW_THR_HI,
+ val);
+ if (ret < 0)
+ return ret;
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ default:
+ return -EINVAL;
+ }
+}
+
+static bool vcnl4010_is_thr_enabled(struct vcnl4000_data *data)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(data->client, VCNL4010_INT_CTRL);
+ if (ret < 0)
+ return false;
+
+ return !!(ret & VCNL4010_INT_THR_EN);
+}
+
+static int vcnl4010_read_event_config(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir)
+{
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+
+ switch (chan->type) {
+ case IIO_PROXIMITY:
+ return vcnl4010_is_thr_enabled(data);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int vcnl4010_config_threshold(struct iio_dev *indio_dev, bool state)
+{
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+ int ret;
+ int icr;
+ int command;
+
+ if (state) {
+ ret = iio_device_claim_direct_mode(indio_dev);
+ if (ret)
+ return ret;
+
+ /* Enable periodic measurement of proximity data. */
+ command = VCNL4000_SELF_TIMED_EN | VCNL4000_PROX_EN;
+
+ /*
+ * Enable interrupts on threshold, for proximity data by
+ * default.
+ */
+ icr = VCNL4010_INT_THR_EN;
+ } else {
+ if (!vcnl4010_is_thr_enabled(data))
+ return 0;
+
+ command = 0;
+ icr = 0;
+ }
+
+ ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND,
+ command);
+ if (ret < 0)
+ goto end;
+
+ ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL, icr);
+
+end:
+ if (state)
+ iio_device_release_direct_mode(indio_dev);
+
+ return ret;
+}
+
+static int vcnl4010_write_event_config(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ int state)
+{
+ switch (chan->type) {
+ case IIO_PROXIMITY:
+ return vcnl4010_config_threshold(indio_dev, state);
+ default:
+ return -EINVAL;
+ }
+}
+
+static ssize_t vcnl4000_read_near_level(struct iio_dev *indio_dev,
+ uintptr_t priv,
+ const struct iio_chan_spec *chan,
+ char *buf)
+{
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+
+ return sprintf(buf, "%u\n", data->near_level);
+}
+
+static const struct iio_chan_spec_ext_info vcnl4000_ext_info[] = {
+ {
+ .name = "nearlevel",
+ .shared = IIO_SEPARATE,
+ .read = vcnl4000_read_near_level,
+ },
+ { /* sentinel */ }
+};
+
+static const struct iio_event_spec vcnl4000_event_spec[] = {
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_RISING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE),
+ }, {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_FALLING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE),
+ }, {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_EITHER,
+ .mask_separate = BIT(IIO_EV_INFO_ENABLE),
+ }
+};
+
+static const struct iio_chan_spec vcnl4000_channels[] = {
+ {
+ .type = IIO_LIGHT,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SCALE),
+ }, {
+ .type = IIO_PROXIMITY,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .ext_info = vcnl4000_ext_info,
+ }
+};
+
+static const struct iio_chan_spec vcnl4010_channels[] = {
+ {
+ .type = IIO_LIGHT,
+ .scan_index = -1,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SCALE),
+ }, {
+ .type = IIO_PROXIMITY,
+ .scan_index = 0,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SAMP_FREQ),
+ .info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+ .event_spec = vcnl4000_event_spec,
+ .num_event_specs = ARRAY_SIZE(vcnl4000_event_spec),
+ .ext_info = vcnl4000_ext_info,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 16,
+ .storagebits = 16,
+ .endianness = IIO_CPU,
+ },
+ },
+ IIO_CHAN_SOFT_TIMESTAMP(1),
+};
+
static const struct iio_info vcnl4000_info = {
.read_raw = vcnl4000_read_raw,
};
+
+static const struct iio_info vcnl4010_info = {
+ .read_raw = vcnl4010_read_raw,
+ .read_avail = vcnl4010_read_avail,
+ .write_raw = vcnl4010_write_raw,
+ .read_event_value = vcnl4010_read_event,
+ .write_event_value = vcnl4010_write_event,
+ .read_event_config = vcnl4010_read_event_config,
+ .write_event_config = vcnl4010_write_event_config,
+};
+
+static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
+ [VCNL4000] = {
+ .prod = "VCNL4000",
+ .init = vcnl4000_init,
+ .measure_light = vcnl4000_measure_light,
+ .measure_proximity = vcnl4000_measure_proximity,
+ .set_power_state = vcnl4000_set_power_state,
+ .channels = vcnl4000_channels,
+ .num_channels = ARRAY_SIZE(vcnl4000_channels),
+ .info = &vcnl4000_info,
+ .irq_support = false,
+ },
+ [VCNL4010] = {
+ .prod = "VCNL4010/4020",
+ .init = vcnl4000_init,
+ .measure_light = vcnl4000_measure_light,
+ .measure_proximity = vcnl4000_measure_proximity,
+ .set_power_state = vcnl4000_set_power_state,
+ .channels = vcnl4010_channels,
+ .num_channels = ARRAY_SIZE(vcnl4010_channels),
+ .info = &vcnl4010_info,
+ .irq_support = true,
+ },
+ [VCNL4040] = {
+ .prod = "VCNL4040",
+ .init = vcnl4200_init,
+ .measure_light = vcnl4200_measure_light,
+ .measure_proximity = vcnl4200_measure_proximity,
+ .set_power_state = vcnl4200_set_power_state,
+ .channels = vcnl4000_channels,
+ .num_channels = ARRAY_SIZE(vcnl4000_channels),
+ .info = &vcnl4000_info,
+ .irq_support = false,
+ },
+ [VCNL4200] = {
+ .prod = "VCNL4200",
+ .init = vcnl4200_init,
+ .measure_light = vcnl4200_measure_light,
+ .measure_proximity = vcnl4200_measure_proximity,
+ .set_power_state = vcnl4200_set_power_state,
+ .channels = vcnl4000_channels,
+ .num_channels = ARRAY_SIZE(vcnl4000_channels),
+ .info = &vcnl4000_info,
+ .irq_support = false,
+ },
+};
+
+static irqreturn_t vcnl4010_irq_thread(int irq, void *p)
+{
+ struct iio_dev *indio_dev = p;
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+ unsigned long isr;
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(data->client, VCNL4010_ISR);
+ if (ret < 0)
+ goto end;
+
+ isr = ret;
+
+ if (isr & VCNL4010_INT_THR) {
+ if (test_bit(VCNL4010_INT_THR_LOW, &isr)) {
+ iio_push_event(indio_dev,
+ IIO_UNMOD_EVENT_CODE(
+ IIO_PROXIMITY,
+ 1,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_FALLING),
+ iio_get_time_ns(indio_dev));
+ }
+
+ if (test_bit(VCNL4010_INT_THR_HIGH, &isr)) {
+ iio_push_event(indio_dev,
+ IIO_UNMOD_EVENT_CODE(
+ IIO_PROXIMITY,
+ 1,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_RISING),
+ iio_get_time_ns(indio_dev));
+ }
+
+ i2c_smbus_write_byte_data(data->client, VCNL4010_ISR,
+ isr & VCNL4010_INT_THR);
+ }
+
+ if (isr & VCNL4010_INT_DRDY && iio_buffer_enabled(indio_dev))
+ iio_trigger_poll_chained(indio_dev->trig);
+
+end:
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t vcnl4010_trigger_handler(int irq, void *p)
+{
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+ const unsigned long *active_scan_mask = indio_dev->active_scan_mask;
+ u16 buffer[8] __aligned(8) = {0}; /* 1x16-bit + naturally aligned ts */
+ bool data_read = false;
+ unsigned long isr;
+ int val = 0;
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(data->client, VCNL4010_ISR);
+ if (ret < 0)
+ goto end;
+
+ isr = ret;
+
+ if (test_bit(0, active_scan_mask)) {
+ if (test_bit(VCNL4010_INT_PROXIMITY, &isr)) {
+ ret = vcnl4000_read_data(data,
+ VCNL4000_PS_RESULT_HI,
+ &val);
+ if (ret < 0)
+ goto end;
+
+ buffer[0] = val;
+ data_read = true;
+ }
+ }
+
+ ret = i2c_smbus_write_byte_data(data->client, VCNL4010_ISR,
+ isr & VCNL4010_INT_DRDY);
+ if (ret < 0)
+ goto end;
+
+ if (!data_read)
+ goto end;
+
+ iio_push_to_buffers_with_timestamp(indio_dev, buffer,
+ iio_get_time_ns(indio_dev));
+
+end:
+ iio_trigger_notify_done(indio_dev->trig);
+ return IRQ_HANDLED;
+}
+
+static int vcnl4010_buffer_postenable(struct iio_dev *indio_dev)
+{
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+ int ret;
+ int cmd;
+
+ /* Do not enable the buffer if we are already capturing events. */
+ if (vcnl4010_is_in_periodic_mode(data))
+ return -EBUSY;
+
+ ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL,
+ VCNL4010_INT_PROX_EN);
+ if (ret < 0)
+ return ret;
+
+ cmd = VCNL4000_SELF_TIMED_EN | VCNL4000_PROX_EN;
+ return i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, cmd);
+}
+
+static int vcnl4010_buffer_predisable(struct iio_dev *indio_dev)
+{
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+ int ret;
+
+ ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL, 0);
+ if (ret < 0)
+ return ret;
+
+ return i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, 0);
+}
+
+static const struct iio_buffer_setup_ops vcnl4010_buffer_ops = {
+ .postenable = &vcnl4010_buffer_postenable,
+ .predisable = &vcnl4010_buffer_predisable,
+};
+
+static const struct iio_trigger_ops vcnl4010_trigger_ops = {
+ .validate_device = iio_trigger_validate_own_device,
+};
+
+static int vcnl4010_probe_trigger(struct iio_dev *indio_dev)
+{
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+ struct i2c_client *client = data->client;
+ struct iio_trigger *trigger;
+
+ trigger = devm_iio_trigger_alloc(&client->dev, "%s-dev%d",
+ indio_dev->name, indio_dev->id);
+ if (!trigger)
+ return -ENOMEM;
+
+ trigger->dev.parent = &client->dev;
+ trigger->ops = &vcnl4010_trigger_ops;
+ iio_trigger_set_drvdata(trigger, indio_dev);
+
+ return devm_iio_trigger_register(&client->dev, trigger);
+}
static int vcnl4000_probe(struct i2c_client *client,
const struct i2c_device_id *id)
@@ -352,26 +1033,136 @@
dev_dbg(&client->dev, "%s Ambient light/proximity sensor, Rev: %02x\n",
data->chip_spec->prod, data->rev);
- indio_dev->dev.parent = &client->dev;
- indio_dev->info = &vcnl4000_info;
- indio_dev->channels = vcnl4000_channels;
- indio_dev->num_channels = ARRAY_SIZE(vcnl4000_channels);
+ if (device_property_read_u32(&client->dev, "proximity-near-level",
+ &data->near_level))
+ data->near_level = 0;
+
+ indio_dev->info = data->chip_spec->info;
+ indio_dev->channels = data->chip_spec->channels;
+ indio_dev->num_channels = data->chip_spec->num_channels;
indio_dev->name = VCNL4000_DRV_NAME;
indio_dev->modes = INDIO_DIRECT_MODE;
- return devm_iio_device_register(&client->dev, indio_dev);
+ if (client->irq && data->chip_spec->irq_support) {
+ ret = devm_iio_triggered_buffer_setup(&client->dev, indio_dev,
+ NULL,
+ vcnl4010_trigger_handler,
+ &vcnl4010_buffer_ops);
+ if (ret < 0) {
+ dev_err(&client->dev,
+ "unable to setup iio triggered buffer\n");
+ return ret;
+ }
+
+ ret = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, vcnl4010_irq_thread,
+ IRQF_TRIGGER_FALLING |
+ IRQF_ONESHOT,
+ "vcnl4010_irq",
+ indio_dev);
+ if (ret < 0) {
+ dev_err(&client->dev, "irq request failed\n");
+ return ret;
+ }
+
+ ret = vcnl4010_probe_trigger(indio_dev);
+ if (ret < 0)
+ return ret;
+ }
+
+ ret = pm_runtime_set_active(&client->dev);
+ if (ret < 0)
+ goto fail_poweroff;
+
+ ret = iio_device_register(indio_dev);
+ if (ret < 0)
+ goto fail_poweroff;
+
+ pm_runtime_enable(&client->dev);
+ pm_runtime_set_autosuspend_delay(&client->dev, VCNL4000_SLEEP_DELAY_MS);
+ pm_runtime_use_autosuspend(&client->dev);
+
+ return 0;
+fail_poweroff:
+ data->chip_spec->set_power_state(data, false);
+ return ret;
}
+
+static const struct of_device_id vcnl_4000_of_match[] = {
+ {
+ .compatible = "vishay,vcnl4000",
+ .data = (void *)VCNL4000,
+ },
+ {
+ .compatible = "vishay,vcnl4010",
+ .data = (void *)VCNL4010,
+ },
+ {
+ .compatible = "vishay,vcnl4020",
+ .data = (void *)VCNL4010,
+ },
+ {
+ .compatible = "vishay,vcnl4040",
+ .data = (void *)VCNL4040,
+ },
+ {
+ .compatible = "vishay,vcnl4200",
+ .data = (void *)VCNL4200,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, vcnl_4000_of_match);
+
+static int vcnl4000_remove(struct i2c_client *client)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(client);
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+
+ pm_runtime_dont_use_autosuspend(&client->dev);
+ pm_runtime_disable(&client->dev);
+ iio_device_unregister(indio_dev);
+ pm_runtime_set_suspended(&client->dev);
+
+ return data->chip_spec->set_power_state(data, false);
+}
+
+static int __maybe_unused vcnl4000_runtime_suspend(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+
+ return data->chip_spec->set_power_state(data, false);
+}
+
+static int __maybe_unused vcnl4000_runtime_resume(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct vcnl4000_data *data = iio_priv(indio_dev);
+
+ return data->chip_spec->set_power_state(data, true);
+}
+
+static const struct dev_pm_ops vcnl4000_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+ SET_RUNTIME_PM_OPS(vcnl4000_runtime_suspend,
+ vcnl4000_runtime_resume, NULL)
+};
static struct i2c_driver vcnl4000_driver = {
.driver = {
.name = VCNL4000_DRV_NAME,
+ .pm = &vcnl4000_pm_ops,
+ .of_match_table = vcnl_4000_of_match,
},
.probe = vcnl4000_probe,
.id_table = vcnl4000_id,
+ .remove = vcnl4000_remove,
};
module_i2c_driver(vcnl4000_driver);
MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
+MODULE_AUTHOR("Mathieu Othacehe <m.othacehe@gmail.com>");
MODULE_DESCRIPTION("Vishay VCNL4000 proximity/ambient light sensor driver");
MODULE_LICENSE("GPL");
--
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