103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko/* 203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * apds9300.c - IIO driver for Avago APDS9300 ambient light sensor 303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * 403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * Copyright 2013 Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> 503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * 603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * This file is subject to the terms and conditions of version 2 of 703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * the GNU General Public License. See the file COPYING in the main 803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * directory of this archive for more details. 903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko */ 1003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 1103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#include <linux/module.h> 1203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#include <linux/slab.h> 1303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#include <linux/pm.h> 1403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#include <linux/i2c.h> 1503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#include <linux/err.h> 1603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#include <linux/mutex.h> 1703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#include <linux/interrupt.h> 1803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#include <linux/iio/iio.h> 1903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#include <linux/iio/sysfs.h> 2003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#include <linux/iio/events.h> 2103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 2203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_DRV_NAME "apds9300" 2303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_IRQ_NAME "apds9300_event" 2403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 2503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko/* Command register bits */ 2603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_CMD BIT(7) /* Select command register. Must write as 1 */ 2703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_WORD BIT(5) /* I2C write/read: if 1 word, if 0 byte */ 2803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_CLEAR BIT(6) /* Interrupt clear. Clears pending interrupt */ 2903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 3003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko/* Register set */ 3103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_CONTROL 0x00 /* Control of basic functions */ 3203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_THRESHLOWLOW 0x02 /* Low byte of low interrupt threshold */ 3303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_THRESHHIGHLOW 0x04 /* Low byte of high interrupt threshold */ 3403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_INTERRUPT 0x06 /* Interrupt control */ 3503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_DATA0LOW 0x0c /* Low byte of ADC channel 0 */ 3603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_DATA1LOW 0x0e /* Low byte of ADC channel 1 */ 3703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 3803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko/* Power on/off value for APDS9300_CONTROL register */ 3903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_POWER_ON 0x03 4003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_POWER_OFF 0x00 4103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 4203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko/* Interrupts */ 4303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_INTR_ENABLE 0x10 4403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko/* Interrupt Persist Function: Any value outside of threshold range */ 4503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_THRESH_INTR 0x01 4603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 4703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_THRESH_MAX 0xffff /* Max threshold value */ 4803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 4903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostruct apds9300_data { 5003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct i2c_client *client; 5103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct mutex mutex; 5203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int power_state; 5303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int thresh_low; 5403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int thresh_hi; 5503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int intr_en; 5603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko}; 5703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 5803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko/* Lux calculation */ 5903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 6003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko/* Calculated values 1000 * (CH1/CH0)^1.4 for CH1/CH0 from 0 to 0.52 */ 6103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic const u16 apds9300_lux_ratio[] = { 6203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 0, 2, 4, 7, 11, 15, 19, 24, 29, 34, 40, 45, 51, 57, 64, 70, 77, 84, 91, 6303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 98, 105, 112, 120, 128, 136, 144, 152, 160, 168, 177, 185, 194, 203, 6403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 212, 221, 230, 239, 249, 258, 268, 277, 287, 297, 307, 317, 327, 337, 6503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 347, 358, 368, 379, 390, 400, 6603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko}; 6703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 6803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic unsigned long apds9300_calculate_lux(u16 ch0, u16 ch1) 6903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 7003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko unsigned long lux, tmp; 7103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 7203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko /* avoid division by zero */ 7303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ch0 == 0) 7403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return 0; 7503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 7603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko tmp = DIV_ROUND_UP(ch1 * 100, ch0); 7703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (tmp <= 52) { 7803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko lux = 3150 * ch0 - (unsigned long)DIV_ROUND_UP_ULL(ch0 7903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * apds9300_lux_ratio[tmp] * 5930ull, 1000); 8003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } else if (tmp <= 65) { 8103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko lux = 2290 * ch0 - 2910 * ch1; 8203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } else if (tmp <= 80) { 8303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko lux = 1570 * ch0 - 1800 * ch1; 8403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } else if (tmp <= 130) { 8503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko lux = 338 * ch0 - 260 * ch1; 8603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } else { 8703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko lux = 0; 8803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 8903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 9003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return lux / 100000; 9103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 9203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 9303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_get_adc_val(struct apds9300_data *data, int adc_number) 9403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 9503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 9603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko u8 flags = APDS9300_CMD | APDS9300_WORD; 9703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 9803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (!data->power_state) 9903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return -EBUSY; 10003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 10103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko /* Select ADC0 or ADC1 data register */ 10203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko flags |= adc_number ? APDS9300_DATA1LOW : APDS9300_DATA0LOW; 10303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 10403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = i2c_smbus_read_word_data(data->client, flags); 10503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret < 0) 10603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko dev_err(&data->client->dev, 10703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko "failed to read ADC%d value\n", adc_number); 10803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 10903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 11003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 11103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 11203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_set_thresh_low(struct apds9300_data *data, int value) 11303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 11403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 11503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 11603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (!data->power_state) 11703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return -EBUSY; 11803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 11903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (value > APDS9300_THRESH_MAX) 12003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return -EINVAL; 12103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 12203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = i2c_smbus_write_word_data(data->client, APDS9300_THRESHLOWLOW 12303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko | APDS9300_CMD | APDS9300_WORD, value); 12403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret) { 12503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko dev_err(&data->client->dev, "failed to set thresh_low\n"); 12603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 12703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 12803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko data->thresh_low = value; 12903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 13003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return 0; 13103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 13203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 13303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_set_thresh_hi(struct apds9300_data *data, int value) 13403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 13503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 13603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 13703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (!data->power_state) 13803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return -EBUSY; 13903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 14003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (value > APDS9300_THRESH_MAX) 14103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return -EINVAL; 14203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 14303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = i2c_smbus_write_word_data(data->client, APDS9300_THRESHHIGHLOW 14403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko | APDS9300_CMD | APDS9300_WORD, value); 14503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret) { 14603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko dev_err(&data->client->dev, "failed to set thresh_hi\n"); 14703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 14803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 14903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko data->thresh_hi = value; 15003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 15103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return 0; 15203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 15303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 15403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_set_intr_state(struct apds9300_data *data, int state) 15503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 15603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 15703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko u8 cmd; 15803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 15903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (!data->power_state) 16003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return -EBUSY; 16103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 16203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko cmd = state ? APDS9300_INTR_ENABLE | APDS9300_THRESH_INTR : 0x00; 16303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = i2c_smbus_write_byte_data(data->client, 16403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko APDS9300_INTERRUPT | APDS9300_CMD, cmd); 16503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret) { 16603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko dev_err(&data->client->dev, 16703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko "failed to set interrupt state %d\n", state); 16803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 16903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 17003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko data->intr_en = state; 17103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 17203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return 0; 17303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 17403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 17503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_set_power_state(struct apds9300_data *data, int state) 17603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 17703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 17803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko u8 cmd; 17903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 18003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko cmd = state ? APDS9300_POWER_ON : APDS9300_POWER_OFF; 18103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = i2c_smbus_write_byte_data(data->client, 18203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko APDS9300_CONTROL | APDS9300_CMD, cmd); 18303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret) { 18403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko dev_err(&data->client->dev, 18503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko "failed to set power state %d\n", state); 18603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 18703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 18803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko data->power_state = state; 18903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 19003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return 0; 19103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 19203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 19303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic void apds9300_clear_intr(struct apds9300_data *data) 19403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 19503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 19603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 19703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = i2c_smbus_write_byte(data->client, APDS9300_CLEAR | APDS9300_CMD); 19803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret < 0) 19903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko dev_err(&data->client->dev, "failed to clear interrupt\n"); 20003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 20103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 20203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_chip_init(struct apds9300_data *data) 20303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 20403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 20503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 20603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko /* Need to set power off to ensure that the chip is off */ 20703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = apds9300_set_power_state(data, 0); 20803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret < 0) 20903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko goto err; 21003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko /* 21103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * Probe the chip. To do so we try to power up the device and then to 21203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * read back the 0x03 code 21303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko */ 21403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = apds9300_set_power_state(data, 1); 21503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret < 0) 21603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko goto err; 21703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = i2c_smbus_read_byte_data(data->client, 21803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko APDS9300_CONTROL | APDS9300_CMD); 21903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret != APDS9300_POWER_ON) { 22003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = -ENODEV; 22103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko goto err; 22203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 22303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko /* 22403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * Disable interrupt to ensure thai it is doesn't enable 22503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko * i.e. after device soft reset 22603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko */ 22703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = apds9300_set_intr_state(data, 0); 22803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret < 0) 22903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko goto err; 23003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 23103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return 0; 23203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 23303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkoerr: 23403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko dev_err(&data->client->dev, "failed to init the chip\n"); 23503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 23603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 23703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 23803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_read_raw(struct iio_dev *indio_dev, 23903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct iio_chan_spec const *chan, int *val, int *val2, 24003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko long mask) 24103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 24203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ch0, ch1, ret = -EINVAL; 24303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct apds9300_data *data = iio_priv(indio_dev); 24403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 24503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko mutex_lock(&data->mutex); 24603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko switch (chan->type) { 24703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko case IIO_LIGHT: 24803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ch0 = apds9300_get_adc_val(data, 0); 24903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ch0 < 0) { 25003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = ch0; 25103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko break; 25203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 25303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ch1 = apds9300_get_adc_val(data, 1); 25403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ch1 < 0) { 25503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = ch1; 25603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko break; 25703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 25803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko *val = apds9300_calculate_lux(ch0, ch1); 25903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = IIO_VAL_INT; 26003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko break; 26103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko case IIO_INTENSITY: 26203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = apds9300_get_adc_val(data, chan->channel); 26303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret < 0) 26403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko break; 26503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko *val = ret; 26603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = IIO_VAL_INT; 26703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko break; 26803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko default: 26903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko break; 27003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 27103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko mutex_unlock(&data->mutex); 27203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 27303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 27403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 27503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 2767e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausenstatic int apds9300_read_thresh(struct iio_dev *indio_dev, 2777e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen const struct iio_chan_spec *chan, enum iio_event_type type, 2787e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen enum iio_event_direction dir, enum iio_event_info info, 2797e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen int *val, int *val2) 28003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 28103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct apds9300_data *data = iio_priv(indio_dev); 28203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 2837e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen switch (dir) { 28403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko case IIO_EV_DIR_RISING: 28503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko *val = data->thresh_hi; 28603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko break; 28703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko case IIO_EV_DIR_FALLING: 28803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko *val = data->thresh_low; 28903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko break; 29003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko default: 29103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return -EINVAL; 29203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 29303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 2947e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen return IIO_VAL_INT; 29503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 29603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 2977e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausenstatic int apds9300_write_thresh(struct iio_dev *indio_dev, 2987e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen const struct iio_chan_spec *chan, enum iio_event_type type, 2997e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen enum iio_event_direction dir, enum iio_event_info info, int val, 3007e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen int val2) 30103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 30203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct apds9300_data *data = iio_priv(indio_dev); 30303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 30403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 30503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko mutex_lock(&data->mutex); 3067e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen if (dir == IIO_EV_DIR_RISING) 30703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = apds9300_set_thresh_hi(data, val); 30803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko else 30903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = apds9300_set_thresh_low(data, val); 31003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko mutex_unlock(&data->mutex); 31103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 31203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 31303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 31403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 31503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_read_interrupt_config(struct iio_dev *indio_dev, 3167e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen const struct iio_chan_spec *chan, 3177e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen enum iio_event_type type, 3187e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen enum iio_event_direction dir) 31903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 32003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct apds9300_data *data = iio_priv(indio_dev); 32103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 32203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return data->intr_en; 32303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 32403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 32503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_write_interrupt_config(struct iio_dev *indio_dev, 3267e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen const struct iio_chan_spec *chan, enum iio_event_type type, 3277e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen enum iio_event_direction dir, int state) 32803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 32903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct apds9300_data *data = iio_priv(indio_dev); 33003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 33103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 33203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko mutex_lock(&data->mutex); 33303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = apds9300_set_intr_state(data, state); 33403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko mutex_unlock(&data->mutex); 33503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 33603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 33703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 33803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 33903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic const struct iio_info apds9300_info_no_irq = { 34003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .driver_module = THIS_MODULE, 34103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .read_raw = apds9300_read_raw, 34203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko}; 34303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 34403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic const struct iio_info apds9300_info = { 34503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .driver_module = THIS_MODULE, 34603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .read_raw = apds9300_read_raw, 347cb955852a48c29ef7bd847ce993102e2b58295d4Lars-Peter Clausen .read_event_value = apds9300_read_thresh, 348cb955852a48c29ef7bd847ce993102e2b58295d4Lars-Peter Clausen .write_event_value = apds9300_write_thresh, 349cb955852a48c29ef7bd847ce993102e2b58295d4Lars-Peter Clausen .read_event_config = apds9300_read_interrupt_config, 350cb955852a48c29ef7bd847ce993102e2b58295d4Lars-Peter Clausen .write_event_config = apds9300_write_interrupt_config, 3517e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen}; 3527e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen 3537e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausenstatic const struct iio_event_spec apds9300_event_spec[] = { 3547e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen { 3557e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen .type = IIO_EV_TYPE_THRESH, 3567e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen .dir = IIO_EV_DIR_RISING, 3577e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen .mask_separate = BIT(IIO_EV_INFO_VALUE) | 3587e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen BIT(IIO_EV_INFO_ENABLE), 3597e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen }, { 3607e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen .type = IIO_EV_TYPE_THRESH, 3617e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen .dir = IIO_EV_DIR_FALLING, 3627e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen .mask_separate = BIT(IIO_EV_INFO_VALUE) | 3637e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen BIT(IIO_EV_INFO_ENABLE), 3647e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen }, 36503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko}; 36603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 36703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic const struct iio_chan_spec apds9300_channels[] = { 36803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko { 36903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .type = IIO_LIGHT, 37003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .channel = 0, 37103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .indexed = true, 37203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), 37303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko }, { 37403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .type = IIO_INTENSITY, 37503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .channel = 0, 37603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .channel2 = IIO_MOD_LIGHT_BOTH, 37703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .indexed = true, 37803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 3797e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen .event_spec = apds9300_event_spec, 3807e97e7bd1f394f2032621d396e6603eada610719Lars-Peter Clausen .num_event_specs = ARRAY_SIZE(apds9300_event_spec), 38103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko }, { 38203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .type = IIO_INTENSITY, 38303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .channel = 1, 38403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .channel2 = IIO_MOD_LIGHT_IR, 38503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .indexed = true, 38603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 38703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko }, 38803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko}; 38903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 39003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic irqreturn_t apds9300_interrupt_handler(int irq, void *private) 39103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 39203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct iio_dev *dev_info = private; 39303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct apds9300_data *data = iio_priv(dev_info); 39403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 39503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko iio_push_event(dev_info, 39603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0, 39703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko IIO_EV_TYPE_THRESH, 39803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko IIO_EV_DIR_EITHER), 39903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko iio_get_time_ns()); 40003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 40103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko apds9300_clear_intr(data); 40203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 40303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return IRQ_HANDLED; 40403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 40503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 40603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_probe(struct i2c_client *client, 40703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko const struct i2c_device_id *id) 40803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 40903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct apds9300_data *data; 41003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct iio_dev *indio_dev; 41103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 41203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 41303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 41403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (!indio_dev) 41503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return -ENOMEM; 41603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 41703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko data = iio_priv(indio_dev); 41803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko i2c_set_clientdata(client, indio_dev); 41903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko data->client = client; 42003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 42103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = apds9300_chip_init(data); 42203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret < 0) 42303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko goto err; 42403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 42503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko mutex_init(&data->mutex); 42603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 42703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko indio_dev->dev.parent = &client->dev; 42803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko indio_dev->channels = apds9300_channels; 42903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko indio_dev->num_channels = ARRAY_SIZE(apds9300_channels); 43003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko indio_dev->name = APDS9300_DRV_NAME; 43103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko indio_dev->modes = INDIO_DIRECT_MODE; 43203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 43303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (client->irq) 43403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko indio_dev->info = &apds9300_info; 43503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko else 43603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko indio_dev->info = &apds9300_info_no_irq; 43703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 43803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (client->irq) { 43903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = devm_request_threaded_irq(&client->dev, client->irq, 44003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko NULL, apds9300_interrupt_handler, 44103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko IRQF_TRIGGER_FALLING | IRQF_ONESHOT, 44203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko APDS9300_IRQ_NAME, indio_dev); 44303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret) { 44403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko dev_err(&client->dev, "irq request error %d\n", -ret); 44503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko goto err; 44603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 44703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko } 44803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 44903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = iio_device_register(indio_dev); 45003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko if (ret < 0) 45103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko goto err; 45203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 45303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return 0; 45403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 45503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkoerr: 45603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko /* Ensure that power off in case of error */ 45703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko apds9300_set_power_state(data, 0); 45803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 45903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 46003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 46103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_remove(struct i2c_client *client) 46203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 46303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct iio_dev *indio_dev = i2c_get_clientdata(client); 46403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct apds9300_data *data = iio_priv(indio_dev); 46503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 46603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko iio_device_unregister(indio_dev); 46703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 46803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko /* Ensure that power off and interrupts are disabled */ 46903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko apds9300_set_intr_state(data, 0); 47003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko apds9300_set_power_state(data, 0); 47103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 47203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return 0; 47303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 47403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 47503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#ifdef CONFIG_PM_SLEEP 47603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_suspend(struct device *dev) 47703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 47803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 47903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct apds9300_data *data = iio_priv(indio_dev); 48003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 48103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 48203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko mutex_lock(&data->mutex); 48303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = apds9300_set_power_state(data, 0); 48403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko mutex_unlock(&data->mutex); 48503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 48603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 48703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 48803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 48903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic int apds9300_resume(struct device *dev) 49003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko{ 49103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 49203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko struct apds9300_data *data = iio_priv(indio_dev); 49303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko int ret; 49403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 49503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko mutex_lock(&data->mutex); 49603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko ret = apds9300_set_power_state(data, 1); 49703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko mutex_unlock(&data->mutex); 49803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 49903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko return ret; 50003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko} 50103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 50203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic SIMPLE_DEV_PM_OPS(apds9300_pm_ops, apds9300_suspend, apds9300_resume); 50303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_PM_OPS (&apds9300_pm_ops) 50403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#else 50503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#define APDS9300_PM_OPS NULL 50603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko#endif 50703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 50803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic struct i2c_device_id apds9300_id[] = { 50903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko { APDS9300_DRV_NAME, 0 }, 51003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko { } 51103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko}; 51203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 51303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr KravchenkoMODULE_DEVICE_TABLE(i2c, apds9300_id); 51403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 51503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkostatic struct i2c_driver apds9300_driver = { 51603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .driver = { 51703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .name = APDS9300_DRV_NAME, 51803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .owner = THIS_MODULE, 51903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .pm = APDS9300_PM_OPS, 52003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko }, 52103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .probe = apds9300_probe, 52203eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .remove = apds9300_remove, 52303eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko .id_table = apds9300_id, 52403eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko}; 52503eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 52603eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenkomodule_i2c_driver(apds9300_driver); 52703eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr Kravchenko 52803eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr KravchenkoMODULE_AUTHOR("Kravchenko Oleksandr <o.v.kravchenko@globallogic.com>"); 52903eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr KravchenkoMODULE_AUTHOR("GlobalLogic inc."); 53003eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr KravchenkoMODULE_DESCRIPTION("APDS9300 ambient light photo sensor driver"); 53103eff7b60dc3e5d2539a5f9685a9fb9a530e01e8Oleksandr KravchenkoMODULE_LICENSE("GPL"); 532