^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * adjd_s311.c - Support for ADJD-S311-CR999 digital color sensor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2012 Peter Meerwald <pmeerw@pmeerw.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * driver for ADJD-S311-CR999 digital color sensor (10-bit channels for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * red, green, blue, clear); 7-bit I2C slave address 0x74
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * limitations: no calibration, no offset mode, no sleep mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/bitmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/iio/sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/iio/trigger_consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/iio/buffer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/iio/triggered_buffer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define ADJD_S311_DRV_NAME "adjd_s311"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define ADJD_S311_CTRL 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define ADJD_S311_CONFIG 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define ADJD_S311_CAP_RED 0x06
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define ADJD_S311_CAP_GREEN 0x07
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define ADJD_S311_CAP_BLUE 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define ADJD_S311_CAP_CLEAR 0x09
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define ADJD_S311_INT_RED 0x0a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define ADJD_S311_INT_GREEN 0x0c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define ADJD_S311_INT_BLUE 0x0e
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define ADJD_S311_INT_CLEAR 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define ADJD_S311_DATA_RED 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define ADJD_S311_DATA_GREEN 0x42
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define ADJD_S311_DATA_BLUE 0x44
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define ADJD_S311_DATA_CLEAR 0x46
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define ADJD_S311_OFFSET_RED 0x48
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define ADJD_S311_OFFSET_GREEN 0x49
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define ADJD_S311_OFFSET_BLUE 0x4a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define ADJD_S311_OFFSET_CLEAR 0x4b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define ADJD_S311_CTRL_GOFS 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define ADJD_S311_CTRL_GSSR 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define ADJD_S311_CAP_MASK 0x0f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define ADJD_S311_INT_MASK 0x0fff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define ADJD_S311_DATA_MASK 0x03ff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct adjd_s311_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) u16 *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) enum adjd_s311_channel_idx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) IDX_RED, IDX_GREEN, IDX_BLUE, IDX_CLEAR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define ADJD_S311_DATA_REG(chan) (ADJD_S311_DATA_RED + (chan) * 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define ADJD_S311_INT_REG(chan) (ADJD_S311_INT_RED + (chan) * 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define ADJD_S311_CAP_REG(chan) (ADJD_S311_CAP_RED + (chan))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static int adjd_s311_req_data(struct iio_dev *indio_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct adjd_s311_data *data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int tries = 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) int ret = i2c_smbus_write_byte_data(data->client, ADJD_S311_CTRL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ADJD_S311_CTRL_GSSR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) while (tries--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) ret = i2c_smbus_read_byte_data(data->client, ADJD_S311_CTRL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (!(ret & ADJD_S311_CTRL_GSSR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) msleep(20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (tries < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) dev_err(&data->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) "adjd_s311_req_data() failed, data not ready\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static int adjd_s311_read_data(struct iio_dev *indio_dev, u8 reg, int *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct adjd_s311_data *data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) int ret = adjd_s311_req_data(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) ret = i2c_smbus_read_word_data(data->client, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) *val = ret & ADJD_S311_DATA_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static irqreturn_t adjd_s311_trigger_handler(int irq, void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct iio_poll_func *pf = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct iio_dev *indio_dev = pf->indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct adjd_s311_data *data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) s64 time_ns = iio_get_time_ns(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) int i, j = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) int ret = adjd_s311_req_data(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) for_each_set_bit(i, indio_dev->active_scan_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) indio_dev->masklength) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) ret = i2c_smbus_read_word_data(data->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) ADJD_S311_DATA_REG(i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) data->buffer[j++] = ret & ADJD_S311_DATA_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, time_ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) iio_trigger_notify_done(indio_dev->trig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #define ADJD_S311_CHANNEL(_color, _scan_idx) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .type = IIO_INTENSITY, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) .modified = 1, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .address = (IDX_##_color), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) BIT(IIO_CHAN_INFO_HARDWAREGAIN) | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) BIT(IIO_CHAN_INFO_INT_TIME), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .channel2 = (IIO_MOD_LIGHT_##_color), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .scan_index = (_scan_idx), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .scan_type = { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) .sign = 'u', \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) .realbits = 10, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) .storagebits = 16, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .endianness = IIO_CPU, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static const struct iio_chan_spec adjd_s311_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) ADJD_S311_CHANNEL(RED, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) ADJD_S311_CHANNEL(GREEN, 1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) ADJD_S311_CHANNEL(BLUE, 2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) ADJD_S311_CHANNEL(CLEAR, 3),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) IIO_CHAN_SOFT_TIMESTAMP(4),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) static int adjd_s311_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) int *val, int *val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct adjd_s311_data *data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) case IIO_CHAN_INFO_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) ret = adjd_s311_read_data(indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) ADJD_S311_DATA_REG(chan->address), val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) case IIO_CHAN_INFO_HARDWAREGAIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) ret = i2c_smbus_read_byte_data(data->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) ADJD_S311_CAP_REG(chan->address));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) *val = ret & ADJD_S311_CAP_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) case IIO_CHAN_INFO_INT_TIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) ret = i2c_smbus_read_word_data(data->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) ADJD_S311_INT_REG(chan->address));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) *val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * not documented, based on measurement:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * 4095 LSBs correspond to roughly 4 ms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) *val2 = ret & ADJD_S311_INT_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return IIO_VAL_INT_PLUS_MICRO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static int adjd_s311_write_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) int val, int val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct adjd_s311_data *data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) case IIO_CHAN_INFO_HARDWAREGAIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (val < 0 || val > ADJD_S311_CAP_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return i2c_smbus_write_byte_data(data->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) ADJD_S311_CAP_REG(chan->address), val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) case IIO_CHAN_INFO_INT_TIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (val != 0 || val2 < 0 || val2 > ADJD_S311_INT_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return i2c_smbus_write_word_data(data->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) ADJD_S311_INT_REG(chan->address), val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static int adjd_s311_update_scan_mode(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) const unsigned long *scan_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct adjd_s311_data *data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) kfree(data->buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) data->buffer = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (data->buffer == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) static const struct iio_info adjd_s311_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) .read_raw = adjd_s311_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) .write_raw = adjd_s311_write_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) .update_scan_mode = adjd_s311_update_scan_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static int adjd_s311_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) struct adjd_s311_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (indio_dev == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) i2c_set_clientdata(client, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) data->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) indio_dev->info = &adjd_s311_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) indio_dev->name = ADJD_S311_DRV_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) indio_dev->channels = adjd_s311_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) indio_dev->num_channels = ARRAY_SIZE(adjd_s311_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) err = iio_triggered_buffer_setup(indio_dev, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) adjd_s311_trigger_handler, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) err = iio_device_register(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) goto exit_unreg_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) dev_info(&client->dev, "ADJD-S311 color sensor registered\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) exit_unreg_buffer:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) iio_triggered_buffer_cleanup(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) static int adjd_s311_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) struct iio_dev *indio_dev = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct adjd_s311_data *data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) iio_triggered_buffer_cleanup(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) kfree(data->buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) static const struct i2c_device_id adjd_s311_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) { "adjd_s311", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) MODULE_DEVICE_TABLE(i2c, adjd_s311_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static struct i2c_driver adjd_s311_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) .name = ADJD_S311_DRV_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) .probe = adjd_s311_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) .remove = adjd_s311_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) .id_table = adjd_s311_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) module_i2c_driver(adjd_s311_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) MODULE_DESCRIPTION("ADJD-S311 color sensor");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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