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@@ -0,0 +1,2072 @@
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+/*
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+ * Device driver for monitoring ambient light intensity in (lux)
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+ * and proximity detection (prox) within the TAOS TSL2X7X family of devices.
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+ *
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+ * Copyright (c) 2012, TAOS Corporation.
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful, but WITHOUT
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+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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+ * more details.
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+ *
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+ * You should have received a copy of the GNU General Public License along
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+ * with this program; if not, write to the Free Software Foundation, Inc.,
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+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/i2c.h>
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+#include <linux/errno.h>
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+#include <linux/delay.h>
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+#include <linux/mutex.h>
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+#include <linux/interrupt.h>
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+#include <linux/slab.h>
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+#include <linux/module.h>
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+#include <linux/version.h>
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+#include "tsl2x7x.h"
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+#include "../events.h"
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+#include "../iio.h"
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+#include "../sysfs.h"
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+
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+/* Cal defs*/
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+#define PROX_STAT_CAL 0
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+#define PROX_STAT_SAMP 1
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+#define MAX_SAMPLES_CAL 200
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+
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+/* TSL2X7X Device ID */
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+#define TRITON_ID 0x00
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+#define SWORDFISH_ID 0x30
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+#define HALIBUT_ID 0x20
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+
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+/* Lux calculation constants */
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+#define TSL2X7X_LUX_CALC_OVER_FLOW 65535
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+
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+/* TAOS Register definitions - note:
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+ * depending on device, some of these register are not used and the
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+ * register address is benign.
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+ */
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+/* 2X7X register offsets */
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+#define TSL2X7X_MAX_CONFIG_REG 16
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+
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+/* Device Registers and Masks */
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+#define TSL2X7X_CNTRL 0x00
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+#define TSL2X7X_ALS_TIME 0X01
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+#define TSL2X7X_PRX_TIME 0x02
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+#define TSL2X7X_WAIT_TIME 0x03
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+#define TSL2X7X_ALS_MINTHRESHLO 0X04
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+#define TSL2X7X_ALS_MINTHRESHHI 0X05
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+#define TSL2X7X_ALS_MAXTHRESHLO 0X06
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+#define TSL2X7X_ALS_MAXTHRESHHI 0X07
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+#define TSL2X7X_PRX_MINTHRESHLO 0X08
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+#define TSL2X7X_PRX_MINTHRESHHI 0X09
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+#define TSL2X7X_PRX_MAXTHRESHLO 0X0A
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+#define TSL2X7X_PRX_MAXTHRESHHI 0X0B
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+#define TSL2X7X_PERSISTENCE 0x0C
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+#define TSL2X7X_PRX_CONFIG 0x0D
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+#define TSL2X7X_PRX_COUNT 0x0E
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+#define TSL2X7X_GAIN 0x0F
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+#define TSL2X7X_NOTUSED 0x10
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+#define TSL2X7X_REVID 0x11
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+#define TSL2X7X_CHIPID 0x12
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+#define TSL2X7X_STATUS 0x13
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+#define TSL2X7X_ALS_CHAN0LO 0x14
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+#define TSL2X7X_ALS_CHAN0HI 0x15
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+#define TSL2X7X_ALS_CHAN1LO 0x16
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+#define TSL2X7X_ALS_CHAN1HI 0x17
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+#define TSL2X7X_PRX_LO 0x18
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+#define TSL2X7X_PRX_HI 0x19
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+
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+/* tsl2X7X cmd reg masks */
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+#define TSL2X7X_CMD_REG 0x80
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+#define TSL2X7X_CMD_SPL_FN 0x60
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+
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+#define TSL2X7X_CMD_PROX_INT_CLR 0X05
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+#define TSL2X7X_CMD_ALS_INT_CLR 0x06
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+#define TSL2X7X_CMD_PROXALS_INT_CLR 0X07
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+
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+/* tsl2X7X cntrl reg masks */
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+#define TSL2X7X_CNTL_ADC_ENBL 0x02
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+#define TSL2X7X_CNTL_PWR_ON 0x01
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+
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+/* tsl2X7X status reg masks */
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+#define TSL2X7X_STA_ADC_VALID 0x01
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+#define TSL2X7X_STA_PRX_VALID 0x02
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+#define TSL2X7X_STA_ADC_PRX_VALID (TSL2X7X_STA_ADC_VALID |\
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+ TSL2X7X_STA_PRX_VALID)
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+#define TSL2X7X_STA_ALS_INTR 0x10
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+#define TSL2X7X_STA_PRX_INTR 0x20
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+
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+/* tsl2X7X cntrl reg masks */
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+#define TSL2X7X_CNTL_REG_CLEAR 0x00
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+#define TSL2X7X_CNTL_PROX_INT_ENBL 0X20
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+#define TSL2X7X_CNTL_ALS_INT_ENBL 0X10
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+#define TSL2X7X_CNTL_WAIT_TMR_ENBL 0X08
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+#define TSL2X7X_CNTL_PROX_DET_ENBL 0X04
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+#define TSL2X7X_CNTL_PWRON 0x01
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+#define TSL2X7X_CNTL_ALSPON_ENBL 0x03
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+#define TSL2X7X_CNTL_INTALSPON_ENBL 0x13
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+#define TSL2X7X_CNTL_PROXPON_ENBL 0x0F
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+#define TSL2X7X_CNTL_INTPROXPON_ENBL 0x2F
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+
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+/*Prox diode to use */
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+#define TSL2X7X_DIODE0 0x10
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+#define TSL2X7X_DIODE1 0x20
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+#define TSL2X7X_DIODE_BOTH 0x30
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+
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+/* LED Power */
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+#define TSL2X7X_mA100 0x00
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+#define TSL2X7X_mA50 0x40
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+#define TSL2X7X_mA25 0x80
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+#define TSL2X7X_mA13 0xD0
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+#define TSL2X7X_MAX_TIMER_CNT (0xFF)
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+
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+/*Common device IIO EventMask */
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+#define TSL2X7X_EVENT_MASK \
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+ (IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING) | \
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+ IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING)),
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+
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+/* TAOS txx2x7x Device family members */
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+enum {
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+ tsl2571,
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+ tsl2671,
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+ tmd2671,
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+ tsl2771,
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+ tmd2771,
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+ tsl2572,
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+ tsl2672,
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+ tmd2672,
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+ tsl2772,
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+ tmd2772
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+};
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+
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+enum {
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+ TSL2X7X_CHIP_UNKNOWN = 0,
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+ TSL2X7X_CHIP_WORKING = 1,
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+ TSL2X7X_CHIP_SUSPENDED = 2
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+};
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+
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+struct tsl2x7x_parse_result {
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+ int integer;
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+ int fract;
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+};
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+
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+/* Per-device data */
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+struct tsl2x7x_als_info {
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+ u16 als_ch0;
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+ u16 als_ch1;
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+ u16 lux;
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+};
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+
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+struct tsl2x7x_prox_stat {
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+ int min;
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+ int max;
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+ int mean;
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+ unsigned long stddev;
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+};
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+
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+struct tsl2x7x_chip_info {
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+ int chan_table_elements;
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+ struct iio_chan_spec channel[4];
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+ const struct iio_info *info;
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+};
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+
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+struct tsl2X7X_chip {
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+ kernel_ulong_t id;
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+ struct mutex prox_mutex;
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+ struct mutex als_mutex;
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+ struct i2c_client *client;
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+ u16 prox_data;
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+ struct tsl2x7x_als_info als_cur_info;
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+ struct tsl2x7x_settings tsl2x7x_settings;
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+ struct tsl2X7X_platform_data *pdata;
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+ int als_time_scale;
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+ int als_saturation;
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+ int tsl2x7x_chip_status;
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+ u8 tsl2x7x_config[TSL2X7X_MAX_CONFIG_REG];
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+ const struct tsl2x7x_chip_info *chip_info;
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+ const struct iio_info *info;
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+ s64 event_timestamp;
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+ /* This structure is intentionally large to accommodate
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+ * updates via sysfs. */
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+ /* Sized to 9 = max 8 segments + 1 termination segment */
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+ struct tsl2x7x_lux tsl2x7x_device_lux[TSL2X7X_MAX_LUX_TABLE_SIZE];
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+};
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+
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+/* Different devices require different coefficents */
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+static const struct tsl2x7x_lux tsl2x71_lux_table[] = {
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+ { 14461, 611, 1211 },
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+ { 18540, 352, 623 },
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+ { 0, 0, 0 },
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+};
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+
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+static const struct tsl2x7x_lux tmd2x71_lux_table[] = {
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+ { 11635, 115, 256 },
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+ { 15536, 87, 179 },
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+ { 0, 0, 0 },
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+};
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+
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+static const struct tsl2x7x_lux tsl2x72_lux_table[] = {
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+ { 14013, 466, 917 },
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+ { 18222, 310, 552 },
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+ { 0, 0, 0 },
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+};
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+
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+static const struct tsl2x7x_lux tmd2x72_lux_table[] = {
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+ { 13218, 130, 262 },
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+ { 17592, 92, 169 },
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+ { 0, 0, 0 },
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+};
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+
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+static const struct tsl2x7x_lux *tsl2x7x_default_lux_table_group[] = {
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+ [tsl2571] = tsl2x71_lux_table,
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+ [tsl2671] = tsl2x71_lux_table,
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+ [tmd2671] = tmd2x71_lux_table,
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+ [tsl2771] = tsl2x71_lux_table,
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+ [tmd2771] = tmd2x71_lux_table,
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+ [tsl2572] = tsl2x72_lux_table,
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+ [tsl2672] = tsl2x72_lux_table,
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+ [tmd2672] = tmd2x72_lux_table,
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+ [tsl2772] = tsl2x72_lux_table,
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+ [tmd2772] = tmd2x72_lux_table,
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+};
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+
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+static const struct tsl2x7x_settings tsl2x7x_default_settings = {
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+ .als_time = 219, /* 101 ms */
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+ .als_gain = 0,
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+ .prx_time = 254, /* 5.4 ms */
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+ .prox_gain = 1,
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+ .wait_time = 245,
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+ .prox_config = 0,
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+ .als_gain_trim = 1000,
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+ .als_cal_target = 150,
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+ .als_thresh_low = 200,
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+ .als_thresh_high = 256,
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+ .persistence = 255,
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+ .interrupts_en = 0,
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+ .prox_thres_low = 0,
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+ .prox_thres_high = 512,
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+ .prox_max_samples_cal = 30,
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+ .prox_pulse_count = 8
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+};
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+
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+static const s16 tsl2X7X_als_gainadj[] = {
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+ 1,
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+ 8,
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+ 16,
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+ 120
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+};
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+
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+static const s16 tsl2X7X_prx_gainadj[] = {
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+ 1,
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+ 2,
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+ 4,
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+ 8
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+};
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+
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+/* Channel variations */
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+enum {
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+ ALS,
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+ PRX,
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+ ALSPRX,
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+ PRX2,
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+ ALSPRX2,
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+};
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+
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+const u8 device_channel_config[] = {
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+ ALS,
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+ PRX,
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+ PRX,
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+ ALSPRX,
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+ ALSPRX,
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+ ALS,
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+ PRX2,
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+ PRX2,
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+ ALSPRX2,
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+ ALSPRX2
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+};
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+
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+/**
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+ * tsl2x7x_parse_buffer() - parse a decimal result from a buffer.
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+ * @*buf: pointer to char buffer to parse
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+ * @*result: pointer to buffer to contain
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+ * resulting interger / decimal as ints.
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+ *
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+ */
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+static int
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+tsl2x7x_parse_buffer(const char *buf, struct tsl2x7x_parse_result *result)
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+{
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+ int integer = 0, fract = 0, fract_mult = 100000;
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+ bool integer_part = true, negative = false;
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+
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+ if (buf[0] == '-') {
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+ negative = true;
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+ buf++;
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+ }
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+
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+ while (*buf) {
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+ if ('0' <= *buf && *buf <= '9') {
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+ if (integer_part)
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+ integer = integer*10 + *buf - '0';
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+ else {
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+ fract += fract_mult*(*buf - '0');
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+ if (fract_mult == 1)
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+ break;
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+ fract_mult /= 10;
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+ }
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+ } else if (*buf == '\n') {
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+ if (*(buf + 1) == '\0')
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+ break;
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+ else
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+ return -EINVAL;
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+ } else if (*buf == '.') {
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+ integer_part = false;
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+ } else {
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+ return -EINVAL;
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+ }
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+ buf++;
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+ }
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+ if (negative) {
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+ if (integer)
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+ integer = -integer;
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+ else
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+ fract = -fract;
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+ }
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+
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+ result->integer = integer;
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+ result->fract = fract;
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+
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+ return 0;
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+}
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+
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+/**
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+ * tsl2x7x_i2c_read() - Read a byte from a register.
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+ * @client: i2c client
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+ * @reg: device register to read from
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+ * @*val: pointer to location to store register contents.
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+ *
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+ */
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+static int
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+tsl2x7x_i2c_read(struct i2c_client *client, u8 reg, u8 *val)
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+{
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+ int ret = 0;
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+
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+ /* select register to write */
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+ ret = i2c_smbus_write_byte(client, (TSL2X7X_CMD_REG | reg));
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+ if (ret < 0) {
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+ dev_err(&client->dev, "%s: failed to write register %x\n"
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+ , __func__, reg);
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+ return ret;
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+ }
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+
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+ /* read the data */
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+ ret = i2c_smbus_read_byte(client);
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+ if (ret >= 0)
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+ *val = (u8)ret;
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+ else
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+ dev_err(&client->dev, "%s: failed to read register %x\n"
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+ , __func__, reg);
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+
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+ return ret;
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+}
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+
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+/**
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+ * tsl2x7x_get_lux() - Reads and calculates current lux value.
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+ * @indio_dev: pointer to IIO device
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+ *
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+ * The raw ch0 and ch1 values of the ambient light sensed in the last
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+ * integration cycle are read from the device.
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+ * Time scale factor array values are adjusted based on the integration time.
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+ * The raw values are multiplied by a scale factor, and device gain is obtained
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+ * using gain index. Limit checks are done next, then the ratio of a multiple
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+ * of ch1 value, to the ch0 value, is calculated. Array tsl2x7x_device_lux[]
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+ * is then scanned to find the first ratio value that is just above the ratio
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+ * we just calculated. The ch0 and ch1 multiplier constants in the array are
|
|
|
+ * then used along with the time scale factor array values, to calculate the
|
|
|
+ * lux.
|
|
|
+ */
|
|
|
+static int tsl2x7x_get_lux(struct iio_dev *indio_dev)
|
|
|
+{
|
|
|
+ u16 ch0, ch1; /* separated ch0/ch1 data from device */
|
|
|
+ u32 lux; /* raw lux calculated from device data */
|
|
|
+ u64 lux64;
|
|
|
+ u32 ratio;
|
|
|
+ u8 buf[4];
|
|
|
+ struct tsl2x7x_lux *p;
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+ int i, ret;
|
|
|
+ u32 ch0lux = 0;
|
|
|
+ u32 ch1lux = 0;
|
|
|
+
|
|
|
+ if (mutex_trylock(&chip->als_mutex) == 0)
|
|
|
+ return chip->als_cur_info.lux; /* busy, so return LAST VALUE */
|
|
|
+
|
|
|
+ if (chip->tsl2x7x_chip_status != TSL2X7X_CHIP_WORKING) {
|
|
|
+ /* device is not enabled */
|
|
|
+ dev_err(&chip->client->dev, "%s: device is not enabled\n",
|
|
|
+ __func__);
|
|
|
+ ret = -EBUSY ;
|
|
|
+ goto out_unlock;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = tsl2x7x_i2c_read(chip->client,
|
|
|
+ (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &buf[0]);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: Failed to read STATUS Reg\n", __func__);
|
|
|
+ goto out_unlock;
|
|
|
+ }
|
|
|
+ /* is data new & valid */
|
|
|
+ if (!(buf[0] & TSL2X7X_STA_ADC_VALID)) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: data not valid yet\n", __func__);
|
|
|
+ ret = chip->als_cur_info.lux; /* return LAST VALUE */
|
|
|
+ goto out_unlock;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (i = 0; i < 4; i++) {
|
|
|
+ ret = tsl2x7x_i2c_read(chip->client,
|
|
|
+ (TSL2X7X_CMD_REG | (TSL2X7X_ALS_CHAN0LO + i)),
|
|
|
+ &buf[i]);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: failed to read. err=%x\n", __func__, ret);
|
|
|
+ goto out_unlock;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* clear any existing interrupt status */
|
|
|
+ ret = i2c_smbus_write_byte(chip->client,
|
|
|
+ (TSL2X7X_CMD_REG |
|
|
|
+ TSL2X7X_CMD_SPL_FN |
|
|
|
+ TSL2X7X_CMD_ALS_INT_CLR));
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: i2c_write_command failed - err = %d\n",
|
|
|
+ __func__, ret);
|
|
|
+ goto out_unlock; /* have no data, so return failure */
|
|
|
+ }
|
|
|
+
|
|
|
+ /* extract ALS/lux data */
|
|
|
+ ch0 = le16_to_cpup((const __le16 *)&buf[0]);
|
|
|
+ ch1 = le16_to_cpup((const __le16 *)&buf[2]);
|
|
|
+
|
|
|
+ chip->als_cur_info.als_ch0 = ch0;
|
|
|
+ chip->als_cur_info.als_ch1 = ch1;
|
|
|
+
|
|
|
+ if ((ch0 >= chip->als_saturation) || (ch1 >= chip->als_saturation)) {
|
|
|
+ lux = TSL2X7X_LUX_CALC_OVER_FLOW;
|
|
|
+ goto return_max;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (ch0 == 0) {
|
|
|
+ /* have no data, so return LAST VALUE */
|
|
|
+ ret = chip->als_cur_info.lux;
|
|
|
+ goto out_unlock;
|
|
|
+ }
|
|
|
+ /* calculate ratio */
|
|
|
+ ratio = (ch1 << 15) / ch0;
|
|
|
+ /* convert to unscaled lux using the pointer to the table */
|
|
|
+ p = (struct tsl2x7x_lux *) chip->tsl2x7x_device_lux;
|
|
|
+ while (p->ratio != 0 && p->ratio < ratio)
|
|
|
+ p++;
|
|
|
+
|
|
|
+ if (p->ratio == 0) {
|
|
|
+ lux = 0;
|
|
|
+ } else {
|
|
|
+ ch0lux = DIV_ROUND_UP((ch0 * p->ch0),
|
|
|
+ tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]);
|
|
|
+ ch1lux = DIV_ROUND_UP((ch1 * p->ch1),
|
|
|
+ tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]);
|
|
|
+ lux = ch0lux - ch1lux;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* note: lux is 31 bit max at this point */
|
|
|
+ if (ch1lux > ch0lux) {
|
|
|
+ dev_dbg(&chip->client->dev, "ch1lux > ch0lux-return last value\n");
|
|
|
+ ret = chip->als_cur_info.lux;
|
|
|
+ goto out_unlock;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* adjust for active time scale */
|
|
|
+ if (chip->als_time_scale == 0)
|
|
|
+ lux = 0;
|
|
|
+ else
|
|
|
+ lux = (lux + (chip->als_time_scale >> 1)) /
|
|
|
+ chip->als_time_scale;
|
|
|
+
|
|
|
+ /* adjust for active gain scale
|
|
|
+ * The tsl2x7x_device_lux tables have a factor of 256 built-in.
|
|
|
+ * User-specified gain provides a multiplier.
|
|
|
+ * Apply user-specified gain before shifting right to retain precision.
|
|
|
+ * Use 64 bits to avoid overflow on multiplication.
|
|
|
+ * Then go back to 32 bits before division to avoid using div_u64().
|
|
|
+ */
|
|
|
+
|
|
|
+ lux64 = lux;
|
|
|
+ lux64 = lux64 * chip->tsl2x7x_settings.als_gain_trim;
|
|
|
+ lux64 >>= 8;
|
|
|
+ lux = lux64;
|
|
|
+ lux = (lux + 500) / 1000;
|
|
|
+
|
|
|
+ if (lux > TSL2X7X_LUX_CALC_OVER_FLOW) /* check for overflow */
|
|
|
+ lux = TSL2X7X_LUX_CALC_OVER_FLOW;
|
|
|
+
|
|
|
+ /* Update the structure with the latest lux. */
|
|
|
+return_max:
|
|
|
+ chip->als_cur_info.lux = lux;
|
|
|
+ ret = lux;
|
|
|
+
|
|
|
+out_unlock:
|
|
|
+ mutex_unlock(&chip->als_mutex);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * tsl2x7x_get_prox() - Reads proximity data registers and updates
|
|
|
+ * chip->prox_data.
|
|
|
+ *
|
|
|
+ * @indio_dev: pointer to IIO device
|
|
|
+ */
|
|
|
+static int tsl2x7x_get_prox(struct iio_dev *indio_dev)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ int ret;
|
|
|
+ u8 status;
|
|
|
+ u8 chdata[2];
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+
|
|
|
+ if (mutex_trylock(&chip->prox_mutex) == 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: Can't get prox mutex\n", __func__);
|
|
|
+ return -EBUSY;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = tsl2x7x_i2c_read(chip->client,
|
|
|
+ (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &status);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: i2c err=%d\n", __func__, ret);
|
|
|
+ goto prox_poll_err;
|
|
|
+ }
|
|
|
+
|
|
|
+ switch (chip->id) {
|
|
|
+ case tsl2571:
|
|
|
+ case tsl2671:
|
|
|
+ case tmd2671:
|
|
|
+ case tsl2771:
|
|
|
+ case tmd2771:
|
|
|
+ if (!(status & TSL2X7X_STA_ADC_VALID))
|
|
|
+ goto prox_poll_err;
|
|
|
+ break;
|
|
|
+ case tsl2572:
|
|
|
+ case tsl2672:
|
|
|
+ case tmd2672:
|
|
|
+ case tsl2772:
|
|
|
+ case tmd2772:
|
|
|
+ if (!(status & TSL2X7X_STA_PRX_VALID))
|
|
|
+ goto prox_poll_err;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (i = 0; i < 2; i++) {
|
|
|
+ ret = tsl2x7x_i2c_read(chip->client,
|
|
|
+ (TSL2X7X_CMD_REG |
|
|
|
+ (TSL2X7X_PRX_LO + i)), &chdata[i]);
|
|
|
+ if (ret < 0)
|
|
|
+ goto prox_poll_err;
|
|
|
+ }
|
|
|
+
|
|
|
+ chip->prox_data =
|
|
|
+ le16_to_cpup((const __le16 *)&chdata[0]);
|
|
|
+
|
|
|
+prox_poll_err:
|
|
|
+
|
|
|
+ mutex_unlock(&chip->prox_mutex);
|
|
|
+
|
|
|
+ return chip->prox_data;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * tsl2x7x_defaults() - Populates the device nominal operating parameters
|
|
|
+ * with those provided by a 'platform' data struct or
|
|
|
+ * with prefined defaults.
|
|
|
+ *
|
|
|
+ * @chip: pointer to device structure.
|
|
|
+ */
|
|
|
+static void tsl2x7x_defaults(struct tsl2X7X_chip *chip)
|
|
|
+{
|
|
|
+ /* If Operational settings defined elsewhere.. */
|
|
|
+ if (chip->pdata && chip->pdata->platform_default_settings != 0)
|
|
|
+ memcpy(&(chip->tsl2x7x_settings),
|
|
|
+ chip->pdata->platform_default_settings,
|
|
|
+ sizeof(tsl2x7x_default_settings));
|
|
|
+ else
|
|
|
+ memcpy(&(chip->tsl2x7x_settings),
|
|
|
+ &tsl2x7x_default_settings,
|
|
|
+ sizeof(tsl2x7x_default_settings));
|
|
|
+
|
|
|
+ /* Load up the proper lux table. */
|
|
|
+ if (chip->pdata && chip->pdata->platform_lux_table[0].ratio != 0)
|
|
|
+ memcpy(chip->tsl2x7x_device_lux,
|
|
|
+ chip->pdata->platform_lux_table,
|
|
|
+ sizeof(chip->pdata->platform_lux_table));
|
|
|
+ else
|
|
|
+ memcpy(chip->tsl2x7x_device_lux,
|
|
|
+ (struct tsl2x7x_lux *)tsl2x7x_default_lux_table_group[chip->id],
|
|
|
+ MAX_DEFAULT_TABLE_BYTES);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * tsl2x7x_als_calibrate() - Obtain single reading and calculate
|
|
|
+ * the als_gain_trim.
|
|
|
+ *
|
|
|
+ * @indio_dev: pointer to IIO device
|
|
|
+ */
|
|
|
+static int tsl2x7x_als_calibrate(struct iio_dev *indio_dev)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+ u8 reg_val;
|
|
|
+ int gain_trim_val;
|
|
|
+ int ret;
|
|
|
+ int lux_val;
|
|
|
+
|
|
|
+ ret = i2c_smbus_write_byte(chip->client,
|
|
|
+ (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: failed to write CNTRL register, ret=%d\n",
|
|
|
+ __func__, ret);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ reg_val = i2c_smbus_read_byte(chip->client);
|
|
|
+ if ((reg_val & (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON))
|
|
|
+ != (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: failed: ADC not enabled\n", __func__);
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = i2c_smbus_write_byte(chip->client,
|
|
|
+ (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: failed to write ctrl reg: ret=%d\n",
|
|
|
+ __func__, ret);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ reg_val = i2c_smbus_read_byte(chip->client);
|
|
|
+ if ((reg_val & TSL2X7X_STA_ADC_VALID) != TSL2X7X_STA_ADC_VALID) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: failed: STATUS - ADC not valid.\n", __func__);
|
|
|
+ return -ENODATA;
|
|
|
+ }
|
|
|
+
|
|
|
+ lux_val = tsl2x7x_get_lux(indio_dev);
|
|
|
+ if (lux_val < 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: failed to get lux\n", __func__);
|
|
|
+ return lux_val;
|
|
|
+ }
|
|
|
+
|
|
|
+ gain_trim_val = (((chip->tsl2x7x_settings.als_cal_target)
|
|
|
+ * chip->tsl2x7x_settings.als_gain_trim) / lux_val);
|
|
|
+ if ((gain_trim_val < 250) || (gain_trim_val > 4000))
|
|
|
+ return -ERANGE;
|
|
|
+
|
|
|
+ chip->tsl2x7x_settings.als_gain_trim = gain_trim_val;
|
|
|
+ dev_info(&chip->client->dev,
|
|
|
+ "%s als_calibrate completed\n", chip->client->name);
|
|
|
+
|
|
|
+ return (int) gain_trim_val;
|
|
|
+}
|
|
|
+
|
|
|
+static int tsl2x7x_chip_on(struct iio_dev *indio_dev)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ int ret = 0;
|
|
|
+ u8 *dev_reg;
|
|
|
+ u8 utmp;
|
|
|
+ int als_count;
|
|
|
+ int als_time;
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+ u8 reg_val = 0;
|
|
|
+
|
|
|
+ if (chip->pdata && chip->pdata->power_on)
|
|
|
+ chip->pdata->power_on(indio_dev);
|
|
|
+
|
|
|
+ /* Non calculated parameters */
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_PRX_TIME] =
|
|
|
+ chip->tsl2x7x_settings.prx_time;
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_WAIT_TIME] =
|
|
|
+ chip->tsl2x7x_settings.wait_time;
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_PRX_CONFIG] =
|
|
|
+ chip->tsl2x7x_settings.prox_config;
|
|
|
+
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHLO] =
|
|
|
+ (chip->tsl2x7x_settings.als_thresh_low) & 0xFF;
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHHI] =
|
|
|
+ (chip->tsl2x7x_settings.als_thresh_low >> 8) & 0xFF;
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHLO] =
|
|
|
+ (chip->tsl2x7x_settings.als_thresh_high) & 0xFF;
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHHI] =
|
|
|
+ (chip->tsl2x7x_settings.als_thresh_high >> 8) & 0xFF;
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_PERSISTENCE] =
|
|
|
+ chip->tsl2x7x_settings.persistence;
|
|
|
+
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_PRX_COUNT] =
|
|
|
+ chip->tsl2x7x_settings.prox_pulse_count;
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHLO] =
|
|
|
+ chip->tsl2x7x_settings.prox_thres_low;
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHLO] =
|
|
|
+ chip->tsl2x7x_settings.prox_thres_high;
|
|
|
+
|
|
|
+ /* and make sure we're not already on */
|
|
|
+ if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) {
|
|
|
+ /* if forcing a register update - turn off, then on */
|
|
|
+ dev_info(&chip->client->dev, "device is already enabled\n");
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* determine als integration regster */
|
|
|
+ als_count = (chip->tsl2x7x_settings.als_time * 100 + 135) / 270;
|
|
|
+ if (als_count == 0)
|
|
|
+ als_count = 1; /* ensure at least one cycle */
|
|
|
+
|
|
|
+ /* convert back to time (encompasses overrides) */
|
|
|
+ als_time = (als_count * 27 + 5) / 10;
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_ALS_TIME] = 256 - als_count;
|
|
|
+
|
|
|
+ /* Set the gain based on tsl2x7x_settings struct */
|
|
|
+ chip->tsl2x7x_config[TSL2X7X_GAIN] =
|
|
|
+ (chip->tsl2x7x_settings.als_gain |
|
|
|
+ (TSL2X7X_mA100 | TSL2X7X_DIODE1)
|
|
|
+ | ((chip->tsl2x7x_settings.prox_gain) << 2));
|
|
|
+
|
|
|
+ /* set chip struct re scaling and saturation */
|
|
|
+ chip->als_saturation = als_count * 922; /* 90% of full scale */
|
|
|
+ chip->als_time_scale = (als_time + 25) / 50;
|
|
|
+
|
|
|
+ /* TSL2X7X Specific power-on / adc enable sequence
|
|
|
+ * Power on the device 1st. */
|
|
|
+ utmp = TSL2X7X_CNTL_PWR_ON;
|
|
|
+ ret = i2c_smbus_write_byte_data(chip->client,
|
|
|
+ TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: failed on CNTRL reg.\n", __func__);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Use the following shadow copy for our delay before enabling ADC.
|
|
|
+ * Write all the registers. */
|
|
|
+ for (i = 0, dev_reg = chip->tsl2x7x_config;
|
|
|
+ i < TSL2X7X_MAX_CONFIG_REG; i++) {
|
|
|
+ ret = i2c_smbus_write_byte_data(chip->client,
|
|
|
+ TSL2X7X_CMD_REG + i, *dev_reg++);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: failed on write to reg %d.\n", __func__, i);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ udelay(3000); /* Power-on settling time */
|
|
|
+
|
|
|
+ /* NOW enable the ADC
|
|
|
+ * initialize the desired mode of operation */
|
|
|
+ utmp = TSL2X7X_CNTL_PWR_ON |
|
|
|
+ TSL2X7X_CNTL_ADC_ENBL |
|
|
|
+ TSL2X7X_CNTL_PROX_DET_ENBL;
|
|
|
+ ret = i2c_smbus_write_byte_data(chip->client,
|
|
|
+ TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: failed on 2nd CTRL reg.\n", __func__);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ chip->tsl2x7x_chip_status = TSL2X7X_CHIP_WORKING;
|
|
|
+
|
|
|
+ if (chip->tsl2x7x_settings.interrupts_en != 0) {
|
|
|
+ dev_info(&chip->client->dev, "Setting Up Interrupt(s)\n");
|
|
|
+
|
|
|
+ reg_val = TSL2X7X_CNTL_PWR_ON | TSL2X7X_CNTL_ADC_ENBL;
|
|
|
+ if ((chip->tsl2x7x_settings.interrupts_en == 0x20) ||
|
|
|
+ (chip->tsl2x7x_settings.interrupts_en == 0x30))
|
|
|
+ reg_val |= TSL2X7X_CNTL_PROX_DET_ENBL;
|
|
|
+
|
|
|
+ reg_val |= chip->tsl2x7x_settings.interrupts_en;
|
|
|
+ ret = i2c_smbus_write_byte_data(chip->client,
|
|
|
+ (TSL2X7X_CMD_REG | TSL2X7X_CNTRL), reg_val);
|
|
|
+ if (ret < 0)
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: failed in tsl2x7x_IOCTL_INT_SET.\n",
|
|
|
+ __func__);
|
|
|
+
|
|
|
+ /* Clear out any initial interrupts */
|
|
|
+ ret = i2c_smbus_write_byte(chip->client,
|
|
|
+ TSL2X7X_CMD_REG | TSL2X7X_CMD_SPL_FN |
|
|
|
+ TSL2X7X_CMD_PROXALS_INT_CLR);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: Failed to clear Int status\n",
|
|
|
+ __func__);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int tsl2x7x_chip_off(struct iio_dev *indio_dev)
|
|
|
+{
|
|
|
+ int ret;
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+
|
|
|
+ /* turn device off */
|
|
|
+ chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED;
|
|
|
+
|
|
|
+ ret = i2c_smbus_write_byte_data(chip->client,
|
|
|
+ TSL2X7X_CMD_REG | TSL2X7X_CNTRL, 0x00);
|
|
|
+
|
|
|
+ if (chip->pdata && chip->pdata->power_off)
|
|
|
+ chip->pdata->power_off(chip->client);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * tsl2x7x_invoke_change
|
|
|
+ * @indio_dev: pointer to IIO device
|
|
|
+ *
|
|
|
+ * Obtain and lock both ALS and PROX resources,
|
|
|
+ * determine and save device state (On/Off),
|
|
|
+ * cycle device to implement updated parameter,
|
|
|
+ * put device back into proper state, and unlock
|
|
|
+ * resource.
|
|
|
+ */
|
|
|
+int tsl2x7x_invoke_change(struct iio_dev *indio_dev)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+ int device_status = chip->tsl2x7x_chip_status;
|
|
|
+
|
|
|
+ mutex_lock(&chip->als_mutex);
|
|
|
+ mutex_lock(&chip->prox_mutex);
|
|
|
+
|
|
|
+ if (device_status == TSL2X7X_CHIP_WORKING)
|
|
|
+ tsl2x7x_chip_off(indio_dev);
|
|
|
+
|
|
|
+ tsl2x7x_chip_on(indio_dev);
|
|
|
+
|
|
|
+ if (device_status != TSL2X7X_CHIP_WORKING)
|
|
|
+ tsl2x7x_chip_off(indio_dev);
|
|
|
+
|
|
|
+ mutex_unlock(&chip->prox_mutex);
|
|
|
+ mutex_unlock(&chip->als_mutex);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static
|
|
|
+void tsl2x7x_prox_calculate(int *data, int length,
|
|
|
+ struct tsl2x7x_prox_stat *statP)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ int sample_sum;
|
|
|
+ int tmp;
|
|
|
+
|
|
|
+ if (length == 0)
|
|
|
+ length = 1;
|
|
|
+
|
|
|
+ sample_sum = 0;
|
|
|
+ statP->min = INT_MAX;
|
|
|
+ statP->max = INT_MIN;
|
|
|
+ for (i = 0; i < length; i++) {
|
|
|
+ sample_sum += data[i];
|
|
|
+ statP->min = min(statP->min, data[i]);
|
|
|
+ statP->max = max(statP->max, data[i]);
|
|
|
+ }
|
|
|
+
|
|
|
+ statP->mean = sample_sum / length;
|
|
|
+ sample_sum = 0;
|
|
|
+ for (i = 0; i < length; i++) {
|
|
|
+ tmp = data[i] - statP->mean;
|
|
|
+ sample_sum += tmp * tmp;
|
|
|
+ }
|
|
|
+ statP->stddev = int_sqrt((long)sample_sum)/length;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * tsl2x7x_prox_cal() - Calculates std. and sets thresholds.
|
|
|
+ * @indio_dev: pointer to IIO device
|
|
|
+ *
|
|
|
+ * Calculates a standard deviation based on the samples,
|
|
|
+ * and sets the threshold accordingly.
|
|
|
+ */
|
|
|
+static void tsl2x7x_prox_cal(struct iio_dev *indio_dev)
|
|
|
+{
|
|
|
+ int prox_history[MAX_SAMPLES_CAL + 1];
|
|
|
+ int i;
|
|
|
+ struct tsl2x7x_prox_stat prox_stat_data[2];
|
|
|
+ struct tsl2x7x_prox_stat *calP;
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+ u8 tmp_irq_settings;
|
|
|
+ u8 current_state = chip->tsl2x7x_chip_status;
|
|
|
+
|
|
|
+ if (chip->tsl2x7x_settings.prox_max_samples_cal > MAX_SAMPLES_CAL) {
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: max prox samples cal is too big: %d\n",
|
|
|
+ __func__, chip->tsl2x7x_settings.prox_max_samples_cal);
|
|
|
+ chip->tsl2x7x_settings.prox_max_samples_cal = MAX_SAMPLES_CAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* have to stop to change settings */
|
|
|
+ tsl2x7x_chip_off(indio_dev);
|
|
|
+
|
|
|
+ /* Enable proximity detection save just in case prox not wanted yet*/
|
|
|
+ tmp_irq_settings = chip->tsl2x7x_settings.interrupts_en;
|
|
|
+ chip->tsl2x7x_settings.interrupts_en |= TSL2X7X_CNTL_PROX_INT_ENBL;
|
|
|
+
|
|
|
+ /*turn on device if not already on*/
|
|
|
+ tsl2x7x_chip_on(indio_dev);
|
|
|
+
|
|
|
+ /*gather the samples*/
|
|
|
+ for (i = 0; i < chip->tsl2x7x_settings.prox_max_samples_cal; i++) {
|
|
|
+ mdelay(15);
|
|
|
+ tsl2x7x_get_prox(indio_dev);
|
|
|
+ prox_history[i] = chip->prox_data;
|
|
|
+ dev_info(&chip->client->dev, "2 i=%d prox data= %d\n",
|
|
|
+ i, chip->prox_data);
|
|
|
+ }
|
|
|
+
|
|
|
+ tsl2x7x_chip_off(indio_dev);
|
|
|
+ calP = &prox_stat_data[PROX_STAT_CAL];
|
|
|
+ tsl2x7x_prox_calculate(prox_history,
|
|
|
+ chip->tsl2x7x_settings.prox_max_samples_cal, calP);
|
|
|
+ chip->tsl2x7x_settings.prox_thres_high = (calP->max << 1) - calP->mean;
|
|
|
+
|
|
|
+ dev_info(&chip->client->dev, " cal min=%d mean=%d max=%d\n",
|
|
|
+ calP->min, calP->mean, calP->max);
|
|
|
+ dev_info(&chip->client->dev,
|
|
|
+ "%s proximity threshold set to %d\n",
|
|
|
+ chip->client->name, chip->tsl2x7x_settings.prox_thres_high);
|
|
|
+
|
|
|
+ /* back to the way they were */
|
|
|
+ chip->tsl2x7x_settings.interrupts_en = tmp_irq_settings;
|
|
|
+ if (current_state == TSL2X7X_CHIP_WORKING)
|
|
|
+ tsl2x7x_chip_on(indio_dev);
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_power_state_show(struct device *dev,
|
|
|
+ struct device_attribute *attr, char *buf)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+
|
|
|
+ return snprintf(buf, PAGE_SIZE, "%d\n", chip->tsl2x7x_chip_status);
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_power_state_store(struct device *dev,
|
|
|
+ struct device_attribute *attr, const char *buf, size_t len)
|
|
|
+{
|
|
|
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
+ bool value;
|
|
|
+
|
|
|
+ if (strtobool(buf, &value))
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ if (value)
|
|
|
+ tsl2x7x_chip_on(indio_dev);
|
|
|
+ else
|
|
|
+ tsl2x7x_chip_off(indio_dev);
|
|
|
+
|
|
|
+ return len;
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_gain_available_show(struct device *dev,
|
|
|
+ struct device_attribute *attr, char *buf)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+
|
|
|
+ switch (chip->id) {
|
|
|
+ case tsl2571:
|
|
|
+ case tsl2671:
|
|
|
+ case tmd2671:
|
|
|
+ case tsl2771:
|
|
|
+ case tmd2771:
|
|
|
+ return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 128");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 120");
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_prox_gain_available_show(struct device *dev,
|
|
|
+ struct device_attribute *attr, char *buf)
|
|
|
+{
|
|
|
+ return snprintf(buf, PAGE_SIZE, "%s\n", "1 2 4 8");
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_als_time_show(struct device *dev,
|
|
|
+ struct device_attribute *attr, char *buf)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+ int y, z;
|
|
|
+
|
|
|
+ y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
|
|
|
+ z = y * 2.72;
|
|
|
+ y /= 1000;
|
|
|
+ z %= 1000;
|
|
|
+
|
|
|
+ return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_als_time_store(struct device *dev,
|
|
|
+ struct device_attribute *attr, const char *buf, size_t len)
|
|
|
+{
|
|
|
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+ struct tsl2x7x_parse_result result;
|
|
|
+
|
|
|
+ result.integer = 0;
|
|
|
+ result.fract = 0;
|
|
|
+
|
|
|
+ tsl2x7x_parse_buffer(buf, &result);
|
|
|
+
|
|
|
+ result.fract /= 1000;
|
|
|
+ result.fract /= 3;
|
|
|
+ chip->tsl2x7x_settings.als_time =
|
|
|
+ (TSL2X7X_MAX_TIMER_CNT - (u8)result.fract);
|
|
|
+
|
|
|
+ dev_info(&chip->client->dev, "%s: als time = %d",
|
|
|
+ __func__, chip->tsl2x7x_settings.als_time);
|
|
|
+
|
|
|
+ tsl2x7x_invoke_change(indio_dev);
|
|
|
+
|
|
|
+ return IIO_VAL_INT_PLUS_MICRO;
|
|
|
+}
|
|
|
+
|
|
|
+static IIO_CONST_ATTR(in_illuminance0_integration_time_available,
|
|
|
+ ".00272 - .696");
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_als_cal_target_show(struct device *dev,
|
|
|
+ struct device_attribute *attr, char *buf)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+
|
|
|
+ return snprintf(buf, PAGE_SIZE, "%d\n",
|
|
|
+ chip->tsl2x7x_settings.als_cal_target);
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_als_cal_target_store(struct device *dev,
|
|
|
+ struct device_attribute *attr, const char *buf, size_t len)
|
|
|
+{
|
|
|
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+ unsigned long value;
|
|
|
+
|
|
|
+ if (kstrtoul(buf, 0, &value))
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ if (value)
|
|
|
+ chip->tsl2x7x_settings.als_cal_target = value;
|
|
|
+
|
|
|
+ tsl2x7x_invoke_change(indio_dev);
|
|
|
+
|
|
|
+ return len;
|
|
|
+}
|
|
|
+
|
|
|
+/* persistence settings */
|
|
|
+static ssize_t tsl2x7x_als_persistence_show(struct device *dev,
|
|
|
+ struct device_attribute *attr, char *buf)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+ int y, z, filter_delay;
|
|
|
+
|
|
|
+ /* Determine integration time */
|
|
|
+ y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
|
|
|
+ z = y * 2.72;
|
|
|
+ filter_delay = z * (chip->tsl2x7x_settings.persistence & 0x0F);
|
|
|
+ y = (filter_delay / 1000);
|
|
|
+ z = (filter_delay % 1000);
|
|
|
+
|
|
|
+ return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_als_persistence_store(struct device *dev,
|
|
|
+ struct device_attribute *attr, const char *buf, size_t len)
|
|
|
+{
|
|
|
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+ struct tsl2x7x_parse_result result;
|
|
|
+ int y, z, filter_delay;
|
|
|
+
|
|
|
+ result.integer = 0;
|
|
|
+ result.fract = 0;
|
|
|
+ tsl2x7x_parse_buffer(buf, &result);
|
|
|
+
|
|
|
+ result.fract /= 1000;
|
|
|
+ y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
|
|
|
+ z = y * 2.72;
|
|
|
+
|
|
|
+ filter_delay =
|
|
|
+ DIV_ROUND_UP(((result.integer * 1000) + result.fract), z);
|
|
|
+
|
|
|
+ chip->tsl2x7x_settings.persistence &= 0xF0;
|
|
|
+ chip->tsl2x7x_settings.persistence |= (filter_delay & 0x0F);
|
|
|
+
|
|
|
+ dev_info(&chip->client->dev, "%s: als persistence = %d",
|
|
|
+ __func__, filter_delay);
|
|
|
+
|
|
|
+ tsl2x7x_invoke_change(indio_dev);
|
|
|
+
|
|
|
+ return IIO_VAL_INT_PLUS_MICRO;
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_prox_persistence_show(struct device *dev,
|
|
|
+ struct device_attribute *attr, char *buf)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+ int y, z, filter_delay;
|
|
|
+
|
|
|
+ /* Determine integration time */
|
|
|
+ y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
|
|
|
+ z = y * 2.72;
|
|
|
+ filter_delay = z * ((chip->tsl2x7x_settings.persistence & 0xF0) >> 4);
|
|
|
+ y = (filter_delay / 1000);
|
|
|
+ z = (filter_delay % 1000);
|
|
|
+
|
|
|
+ return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_prox_persistence_store(struct device *dev,
|
|
|
+ struct device_attribute *attr, const char *buf, size_t len)
|
|
|
+{
|
|
|
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+ struct tsl2x7x_parse_result result;
|
|
|
+ int y, z, filter_delay;
|
|
|
+
|
|
|
+ result.integer = 0;
|
|
|
+ result.fract = 0;
|
|
|
+ tsl2x7x_parse_buffer(buf, &result);
|
|
|
+
|
|
|
+ result.fract /= 1000;
|
|
|
+ y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
|
|
|
+ z = y * 2.72;
|
|
|
+
|
|
|
+ filter_delay =
|
|
|
+ DIV_ROUND_UP(((result.integer * 1000) + result.fract), z);
|
|
|
+
|
|
|
+ chip->tsl2x7x_settings.persistence &= 0x0F;
|
|
|
+ chip->tsl2x7x_settings.persistence |= ((filter_delay << 4) & 0xF0);
|
|
|
+
|
|
|
+ dev_info(&chip->client->dev, "%s: prox persistence = %d",
|
|
|
+ __func__, filter_delay);
|
|
|
+
|
|
|
+ tsl2x7x_invoke_change(indio_dev);
|
|
|
+
|
|
|
+ return IIO_VAL_INT_PLUS_MICRO;
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_do_calibrate(struct device *dev,
|
|
|
+ struct device_attribute *attr, const char *buf, size_t len)
|
|
|
+{
|
|
|
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
+ bool value;
|
|
|
+
|
|
|
+ if (strtobool(buf, &value))
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ if (value)
|
|
|
+ tsl2x7x_als_calibrate(indio_dev);
|
|
|
+
|
|
|
+ tsl2x7x_invoke_change(indio_dev);
|
|
|
+
|
|
|
+ return len;
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_luxtable_show(struct device *dev,
|
|
|
+ struct device_attribute *attr, char *buf)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+ int i = 0;
|
|
|
+ int offset = 0;
|
|
|
+
|
|
|
+ while (i < (TSL2X7X_MAX_LUX_TABLE_SIZE * 3)) {
|
|
|
+ offset += snprintf(buf + offset, PAGE_SIZE, "%d,%d,%d,",
|
|
|
+ chip->tsl2x7x_device_lux[i].ratio,
|
|
|
+ chip->tsl2x7x_device_lux[i].ch0,
|
|
|
+ chip->tsl2x7x_device_lux[i].ch1);
|
|
|
+ if (chip->tsl2x7x_device_lux[i].ratio == 0) {
|
|
|
+ /* We just printed the first "0" entry.
|
|
|
+ * Now get rid of the extra "," and break. */
|
|
|
+ offset--;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ i++;
|
|
|
+ }
|
|
|
+
|
|
|
+ offset += snprintf(buf + offset, PAGE_SIZE, "\n");
|
|
|
+ return offset;
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_luxtable_store(struct device *dev,
|
|
|
+ struct device_attribute *attr, const char *buf, size_t len)
|
|
|
+{
|
|
|
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
|
|
|
+ int value[ARRAY_SIZE(chip->tsl2x7x_device_lux)*3 + 1];
|
|
|
+ int n;
|
|
|
+
|
|
|
+ get_options(buf, ARRAY_SIZE(value), value);
|
|
|
+
|
|
|
+ /* We now have an array of ints starting at value[1], and
|
|
|
+ * enumerated by value[0].
|
|
|
+ * We expect each group of three ints is one table entry,
|
|
|
+ * and the last table entry is all 0.
|
|
|
+ */
|
|
|
+ n = value[0];
|
|
|
+ if ((n % 3) || n < 6 ||
|
|
|
+ n > ((ARRAY_SIZE(chip->tsl2x7x_device_lux) - 1) * 3)) {
|
|
|
+ dev_info(dev, "LUX TABLE INPUT ERROR 1 Value[0]=%d\n", n);
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((value[(n - 2)] | value[(n - 1)] | value[n]) != 0) {
|
|
|
+ dev_info(dev, "LUX TABLE INPUT ERROR 2 Value[0]=%d\n", n);
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING)
|
|
|
+ tsl2x7x_chip_off(indio_dev);
|
|
|
+
|
|
|
+ /* Zero out the table */
|
|
|
+ memset(chip->tsl2x7x_device_lux, 0, sizeof(chip->tsl2x7x_device_lux));
|
|
|
+ memcpy(chip->tsl2x7x_device_lux, &value[1], (value[0] * 4));
|
|
|
+
|
|
|
+ tsl2x7x_invoke_change(indio_dev);
|
|
|
+
|
|
|
+ return len;
|
|
|
+}
|
|
|
+
|
|
|
+static ssize_t tsl2x7x_do_prox_calibrate(struct device *dev,
|
|
|
+ struct device_attribute *attr, const char *buf, size_t len)
|
|
|
+{
|
|
|
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
+ bool value;
|
|
|
+
|
|
|
+ if (strtobool(buf, &value))
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ if (value)
|
|
|
+ tsl2x7x_prox_cal(indio_dev);
|
|
|
+
|
|
|
+ tsl2x7x_invoke_change(indio_dev);
|
|
|
+
|
|
|
+ return len;
|
|
|
+}
|
|
|
+
|
|
|
+static int tsl2x7x_read_interrupt_config(struct iio_dev *indio_dev,
|
|
|
+ u64 event_code)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY)
|
|
|
+ ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x10);
|
|
|
+ else
|
|
|
+ ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x20);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int tsl2x7x_write_interrupt_config(struct iio_dev *indio_dev,
|
|
|
+ u64 event_code,
|
|
|
+ int val)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+
|
|
|
+ if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) {
|
|
|
+ if (val)
|
|
|
+ chip->tsl2x7x_settings.interrupts_en |= 0x10;
|
|
|
+ else
|
|
|
+ chip->tsl2x7x_settings.interrupts_en &= 0x20;
|
|
|
+ } else {
|
|
|
+ if (val)
|
|
|
+ chip->tsl2x7x_settings.interrupts_en |= 0x20;
|
|
|
+ else
|
|
|
+ chip->tsl2x7x_settings.interrupts_en &= 0x10;
|
|
|
+ }
|
|
|
+
|
|
|
+ tsl2x7x_invoke_change(indio_dev);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int tsl2x7x_write_thresh(struct iio_dev *indio_dev,
|
|
|
+ u64 event_code,
|
|
|
+ int val)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+
|
|
|
+ if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) {
|
|
|
+ switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) {
|
|
|
+ case IIO_EV_DIR_RISING:
|
|
|
+ chip->tsl2x7x_settings.als_thresh_high = val;
|
|
|
+ break;
|
|
|
+ case IIO_EV_DIR_FALLING:
|
|
|
+ chip->tsl2x7x_settings.als_thresh_low = val;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) {
|
|
|
+ case IIO_EV_DIR_RISING:
|
|
|
+ chip->tsl2x7x_settings.prox_thres_high = val;
|
|
|
+ break;
|
|
|
+ case IIO_EV_DIR_FALLING:
|
|
|
+ chip->tsl2x7x_settings.prox_thres_low = val;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ tsl2x7x_invoke_change(indio_dev);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int tsl2x7x_read_thresh(struct iio_dev *indio_dev,
|
|
|
+ u64 event_code,
|
|
|
+ int *val)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+
|
|
|
+ if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) {
|
|
|
+ switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) {
|
|
|
+ case IIO_EV_DIR_RISING:
|
|
|
+ *val = chip->tsl2x7x_settings.als_thresh_high;
|
|
|
+ break;
|
|
|
+ case IIO_EV_DIR_FALLING:
|
|
|
+ *val = chip->tsl2x7x_settings.als_thresh_low;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) {
|
|
|
+ case IIO_EV_DIR_RISING:
|
|
|
+ *val = chip->tsl2x7x_settings.prox_thres_high;
|
|
|
+ break;
|
|
|
+ case IIO_EV_DIR_FALLING:
|
|
|
+ *val = chip->tsl2x7x_settings.prox_thres_low;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int tsl2x7x_read_raw(struct iio_dev *indio_dev,
|
|
|
+ struct iio_chan_spec const *chan,
|
|
|
+ int *val,
|
|
|
+ int *val2,
|
|
|
+ long mask)
|
|
|
+{
|
|
|
+ int ret = -EINVAL;
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+
|
|
|
+ switch (mask) {
|
|
|
+ case IIO_CHAN_INFO_RAW:
|
|
|
+ switch (chan->type) {
|
|
|
+ case IIO_LIGHT:
|
|
|
+ tsl2x7x_get_lux(indio_dev);
|
|
|
+ *val = chip->als_cur_info.lux;
|
|
|
+ ret = IIO_VAL_INT;
|
|
|
+ break;
|
|
|
+ case IIO_INTENSITY:
|
|
|
+ tsl2x7x_get_lux(indio_dev);
|
|
|
+ if (chan->channel == 0)
|
|
|
+ *val = chip->als_cur_info.als_ch0;
|
|
|
+ else
|
|
|
+ *val = chip->als_cur_info.als_ch1;
|
|
|
+ ret = IIO_VAL_INT;
|
|
|
+ break;
|
|
|
+ case IIO_PROXIMITY:
|
|
|
+ tsl2x7x_get_prox(indio_dev);
|
|
|
+ *val = chip->prox_data;
|
|
|
+ ret = IIO_VAL_INT;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ return -EINVAL;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case IIO_CHAN_INFO_CALIBSCALE:
|
|
|
+ if (chan->type == IIO_LIGHT)
|
|
|
+ *val =
|
|
|
+ tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain];
|
|
|
+ else
|
|
|
+ *val =
|
|
|
+ tsl2X7X_prx_gainadj[chip->tsl2x7x_settings.prox_gain];
|
|
|
+ ret = IIO_VAL_INT;
|
|
|
+ break;
|
|
|
+ case IIO_CHAN_INFO_CALIBBIAS:
|
|
|
+ *val = chip->tsl2x7x_settings.als_gain_trim;
|
|
|
+ ret = IIO_VAL_INT;
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ ret = -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int tsl2x7x_write_raw(struct iio_dev *indio_dev,
|
|
|
+ struct iio_chan_spec const *chan,
|
|
|
+ int val,
|
|
|
+ int val2,
|
|
|
+ long mask)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+
|
|
|
+ switch (mask) {
|
|
|
+ case IIO_CHAN_INFO_CALIBSCALE:
|
|
|
+ if (chan->type == IIO_INTENSITY) {
|
|
|
+ switch (val) {
|
|
|
+ case 1:
|
|
|
+ chip->tsl2x7x_settings.als_gain = 0;
|
|
|
+ break;
|
|
|
+ case 8:
|
|
|
+ chip->tsl2x7x_settings.als_gain = 1;
|
|
|
+ break;
|
|
|
+ case 16:
|
|
|
+ chip->tsl2x7x_settings.als_gain = 2;
|
|
|
+ break;
|
|
|
+ case 120:
|
|
|
+ switch (chip->id) {
|
|
|
+ case tsl2572:
|
|
|
+ case tsl2672:
|
|
|
+ case tmd2672:
|
|
|
+ case tsl2772:
|
|
|
+ case tmd2772:
|
|
|
+ return -EINVAL;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ chip->tsl2x7x_settings.als_gain = 3;
|
|
|
+ break;
|
|
|
+ case 128:
|
|
|
+ switch (chip->id) {
|
|
|
+ case tsl2571:
|
|
|
+ case tsl2671:
|
|
|
+ case tmd2671:
|
|
|
+ case tsl2771:
|
|
|
+ case tmd2771:
|
|
|
+ return -EINVAL;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ chip->tsl2x7x_settings.als_gain = 3;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ switch (val) {
|
|
|
+ case 1:
|
|
|
+ chip->tsl2x7x_settings.prox_gain = 0;
|
|
|
+ break;
|
|
|
+ case 2:
|
|
|
+ chip->tsl2x7x_settings.prox_gain = 1;
|
|
|
+ break;
|
|
|
+ case 4:
|
|
|
+ chip->tsl2x7x_settings.prox_gain = 2;
|
|
|
+ break;
|
|
|
+ case 8:
|
|
|
+ chip->tsl2x7x_settings.prox_gain = 3;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case IIO_CHAN_INFO_CALIBBIAS:
|
|
|
+ chip->tsl2x7x_settings.als_gain_trim = val;
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ tsl2x7x_invoke_change(indio_dev);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static DEVICE_ATTR(power_state, S_IRUGO | S_IWUSR,
|
|
|
+ tsl2x7x_power_state_show, tsl2x7x_power_state_store);
|
|
|
+
|
|
|
+static DEVICE_ATTR(in_proximity0_calibscale_available, S_IRUGO,
|
|
|
+ tsl2x7x_prox_gain_available_show, NULL);
|
|
|
+
|
|
|
+static DEVICE_ATTR(in_illuminance0_calibscale_available, S_IRUGO,
|
|
|
+ tsl2x7x_gain_available_show, NULL);
|
|
|
+
|
|
|
+static DEVICE_ATTR(in_illuminance0_integration_time, S_IRUGO | S_IWUSR,
|
|
|
+ tsl2x7x_als_time_show, tsl2x7x_als_time_store);
|
|
|
+
|
|
|
+static DEVICE_ATTR(in_illuminance0_target_input, S_IRUGO | S_IWUSR,
|
|
|
+ tsl2x7x_als_cal_target_show, tsl2x7x_als_cal_target_store);
|
|
|
+
|
|
|
+static DEVICE_ATTR(in_illuminance0_calibrate, S_IWUSR, NULL,
|
|
|
+ tsl2x7x_do_calibrate);
|
|
|
+
|
|
|
+static DEVICE_ATTR(in_proximity0_calibrate, S_IWUSR, NULL,
|
|
|
+ tsl2x7x_do_prox_calibrate);
|
|
|
+
|
|
|
+static DEVICE_ATTR(in_illuminance0_lux_table, S_IRUGO | S_IWUSR,
|
|
|
+ tsl2x7x_luxtable_show, tsl2x7x_luxtable_store);
|
|
|
+
|
|
|
+static DEVICE_ATTR(in_intensity0_thresh_period, S_IRUGO | S_IWUSR,
|
|
|
+ tsl2x7x_als_persistence_show, tsl2x7x_als_persistence_store);
|
|
|
+
|
|
|
+static DEVICE_ATTR(in_proximity0_thresh_period, S_IRUGO | S_IWUSR,
|
|
|
+ tsl2x7x_prox_persistence_show, tsl2x7x_prox_persistence_store);
|
|
|
+
|
|
|
+/* Use the default register values to identify the Taos device */
|
|
|
+static int tsl2x7x_device_id(unsigned char *id, int target)
|
|
|
+{
|
|
|
+ switch (target) {
|
|
|
+ case tsl2571:
|
|
|
+ case tsl2671:
|
|
|
+ case tsl2771:
|
|
|
+ return ((*id & 0xf0) == TRITON_ID);
|
|
|
+ break;
|
|
|
+ case tmd2671:
|
|
|
+ case tmd2771:
|
|
|
+ return ((*id & 0xf0) == HALIBUT_ID);
|
|
|
+ break;
|
|
|
+ case tsl2572:
|
|
|
+ case tsl2672:
|
|
|
+ case tmd2672:
|
|
|
+ case tsl2772:
|
|
|
+ case tmd2772:
|
|
|
+ return ((*id & 0xf0) == SWORDFISH_ID);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ return -EINVAL;
|
|
|
+}
|
|
|
+
|
|
|
+static irqreturn_t tsl2x7x_event_handler(int irq, void *private)
|
|
|
+{
|
|
|
+ struct iio_dev *indio_dev = private;
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+ s64 timestamp = iio_get_time_ns();
|
|
|
+ int ret;
|
|
|
+ u8 value;
|
|
|
+
|
|
|
+ value = i2c_smbus_read_byte_data(chip->client,
|
|
|
+ TSL2X7X_CMD_REG | TSL2X7X_STATUS);
|
|
|
+
|
|
|
+ /* What type of interrupt do we need to process */
|
|
|
+ if (value & TSL2X7X_STA_PRX_INTR) {
|
|
|
+ tsl2x7x_get_prox(indio_dev); /* freshen data for ABI */
|
|
|
+ iio_push_event(indio_dev,
|
|
|
+ IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY,
|
|
|
+ 0,
|
|
|
+ IIO_EV_TYPE_THRESH,
|
|
|
+ IIO_EV_DIR_EITHER),
|
|
|
+ timestamp);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (value & TSL2X7X_STA_ALS_INTR) {
|
|
|
+ tsl2x7x_get_lux(indio_dev); /* freshen data for ABI */
|
|
|
+ iio_push_event(indio_dev,
|
|
|
+ IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
|
|
|
+ 0,
|
|
|
+ IIO_EV_TYPE_THRESH,
|
|
|
+ IIO_EV_DIR_EITHER),
|
|
|
+ timestamp);
|
|
|
+ }
|
|
|
+ /* Clear interrupt now that we have handled it. */
|
|
|
+ ret = i2c_smbus_write_byte(chip->client,
|
|
|
+ TSL2X7X_CMD_REG | TSL2X7X_CMD_SPL_FN |
|
|
|
+ TSL2X7X_CMD_PROXALS_INT_CLR);
|
|
|
+ if (ret < 0)
|
|
|
+ dev_err(&chip->client->dev,
|
|
|
+ "%s: Failed to clear irq from event handler. err = %d\n",
|
|
|
+ __func__, ret);
|
|
|
+
|
|
|
+ return IRQ_HANDLED;
|
|
|
+}
|
|
|
+
|
|
|
+static struct attribute *tsl2x7x_ALS_device_attrs[] = {
|
|
|
+ &dev_attr_power_state.attr,
|
|
|
+ &dev_attr_in_illuminance0_calibscale_available.attr,
|
|
|
+ &dev_attr_in_illuminance0_integration_time.attr,
|
|
|
+ &iio_const_attr_in_illuminance0_integration_time_available\
|
|
|
+ .dev_attr.attr,
|
|
|
+ &dev_attr_in_illuminance0_target_input.attr,
|
|
|
+ &dev_attr_in_illuminance0_calibrate.attr,
|
|
|
+ &dev_attr_in_illuminance0_lux_table.attr,
|
|
|
+ NULL
|
|
|
+};
|
|
|
+
|
|
|
+static struct attribute *tsl2x7x_PRX_device_attrs[] = {
|
|
|
+ &dev_attr_power_state.attr,
|
|
|
+ &dev_attr_in_proximity0_calibrate.attr,
|
|
|
+ NULL
|
|
|
+};
|
|
|
+
|
|
|
+static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = {
|
|
|
+ &dev_attr_power_state.attr,
|
|
|
+ &dev_attr_in_illuminance0_calibscale_available.attr,
|
|
|
+ &dev_attr_in_illuminance0_integration_time.attr,
|
|
|
+ &iio_const_attr_in_illuminance0_integration_time_available\
|
|
|
+ .dev_attr.attr,
|
|
|
+ &dev_attr_in_illuminance0_target_input.attr,
|
|
|
+ &dev_attr_in_illuminance0_calibrate.attr,
|
|
|
+ &dev_attr_in_illuminance0_lux_table.attr,
|
|
|
+ &dev_attr_in_proximity0_calibrate.attr,
|
|
|
+ NULL
|
|
|
+};
|
|
|
+
|
|
|
+static struct attribute *tsl2x7x_PRX2_device_attrs[] = {
|
|
|
+ &dev_attr_power_state.attr,
|
|
|
+ &dev_attr_in_proximity0_calibrate.attr,
|
|
|
+ &dev_attr_in_proximity0_calibscale_available.attr,
|
|
|
+ NULL
|
|
|
+};
|
|
|
+
|
|
|
+static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = {
|
|
|
+ &dev_attr_power_state.attr,
|
|
|
+ &dev_attr_in_illuminance0_calibscale_available.attr,
|
|
|
+ &dev_attr_in_illuminance0_integration_time.attr,
|
|
|
+ &iio_const_attr_in_illuminance0_integration_time_available\
|
|
|
+ .dev_attr.attr,
|
|
|
+ &dev_attr_in_illuminance0_target_input.attr,
|
|
|
+ &dev_attr_in_illuminance0_calibrate.attr,
|
|
|
+ &dev_attr_in_illuminance0_lux_table.attr,
|
|
|
+ &dev_attr_in_proximity0_calibrate.attr,
|
|
|
+ &dev_attr_in_proximity0_calibscale_available.attr,
|
|
|
+ NULL
|
|
|
+};
|
|
|
+
|
|
|
+static struct attribute *tsl2X7X_ALS_event_attrs[] = {
|
|
|
+ &dev_attr_in_intensity0_thresh_period.attr,
|
|
|
+ NULL,
|
|
|
+};
|
|
|
+static struct attribute *tsl2X7X_PRX_event_attrs[] = {
|
|
|
+ &dev_attr_in_proximity0_thresh_period.attr,
|
|
|
+ NULL,
|
|
|
+};
|
|
|
+
|
|
|
+static struct attribute *tsl2X7X_ALSPRX_event_attrs[] = {
|
|
|
+ &dev_attr_in_intensity0_thresh_period.attr,
|
|
|
+ &dev_attr_in_proximity0_thresh_period.attr,
|
|
|
+ NULL,
|
|
|
+};
|
|
|
+
|
|
|
+static const struct attribute_group tsl2X7X_device_attr_group_tbl[] = {
|
|
|
+ [ALS] = {
|
|
|
+ .attrs = tsl2x7x_ALS_device_attrs,
|
|
|
+ },
|
|
|
+ [PRX] = {
|
|
|
+ .attrs = tsl2x7x_PRX_device_attrs,
|
|
|
+ },
|
|
|
+ [ALSPRX] = {
|
|
|
+ .attrs = tsl2x7x_ALSPRX_device_attrs,
|
|
|
+ },
|
|
|
+ [PRX2] = {
|
|
|
+ .attrs = tsl2x7x_PRX2_device_attrs,
|
|
|
+ },
|
|
|
+ [ALSPRX2] = {
|
|
|
+ .attrs = tsl2x7x_ALSPRX2_device_attrs,
|
|
|
+ },
|
|
|
+};
|
|
|
+
|
|
|
+static struct attribute_group tsl2X7X_event_attr_group_tbl[] = {
|
|
|
+ [ALS] = {
|
|
|
+ .attrs = tsl2X7X_ALS_event_attrs,
|
|
|
+ .name = "events",
|
|
|
+ },
|
|
|
+ [PRX] = {
|
|
|
+ .attrs = tsl2X7X_PRX_event_attrs,
|
|
|
+ .name = "events",
|
|
|
+ },
|
|
|
+ [ALSPRX] = {
|
|
|
+ .attrs = tsl2X7X_ALSPRX_event_attrs,
|
|
|
+ .name = "events",
|
|
|
+ },
|
|
|
+};
|
|
|
+
|
|
|
+static const struct iio_info tsl2X7X_device_info[] = {
|
|
|
+ [ALS] = {
|
|
|
+ .attrs = &tsl2X7X_device_attr_group_tbl[ALS],
|
|
|
+ .event_attrs = &tsl2X7X_event_attr_group_tbl[ALS],
|
|
|
+ .driver_module = THIS_MODULE,
|
|
|
+ .read_raw = &tsl2x7x_read_raw,
|
|
|
+ .write_raw = &tsl2x7x_write_raw,
|
|
|
+ .read_event_value = &tsl2x7x_read_thresh,
|
|
|
+ .write_event_value = &tsl2x7x_write_thresh,
|
|
|
+ .read_event_config = &tsl2x7x_read_interrupt_config,
|
|
|
+ .write_event_config = &tsl2x7x_write_interrupt_config,
|
|
|
+ },
|
|
|
+ [PRX] = {
|
|
|
+ .attrs = &tsl2X7X_device_attr_group_tbl[PRX],
|
|
|
+ .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX],
|
|
|
+ .driver_module = THIS_MODULE,
|
|
|
+ .read_raw = &tsl2x7x_read_raw,
|
|
|
+ .write_raw = &tsl2x7x_write_raw,
|
|
|
+ .read_event_value = &tsl2x7x_read_thresh,
|
|
|
+ .write_event_value = &tsl2x7x_write_thresh,
|
|
|
+ .read_event_config = &tsl2x7x_read_interrupt_config,
|
|
|
+ .write_event_config = &tsl2x7x_write_interrupt_config,
|
|
|
+ },
|
|
|
+ [ALSPRX] = {
|
|
|
+ .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX],
|
|
|
+ .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX],
|
|
|
+ .driver_module = THIS_MODULE,
|
|
|
+ .read_raw = &tsl2x7x_read_raw,
|
|
|
+ .write_raw = &tsl2x7x_write_raw,
|
|
|
+ .read_event_value = &tsl2x7x_read_thresh,
|
|
|
+ .write_event_value = &tsl2x7x_write_thresh,
|
|
|
+ .read_event_config = &tsl2x7x_read_interrupt_config,
|
|
|
+ .write_event_config = &tsl2x7x_write_interrupt_config,
|
|
|
+ },
|
|
|
+ [PRX2] = {
|
|
|
+ .attrs = &tsl2X7X_device_attr_group_tbl[PRX2],
|
|
|
+ .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX],
|
|
|
+ .driver_module = THIS_MODULE,
|
|
|
+ .read_raw = &tsl2x7x_read_raw,
|
|
|
+ .write_raw = &tsl2x7x_write_raw,
|
|
|
+ .read_event_value = &tsl2x7x_read_thresh,
|
|
|
+ .write_event_value = &tsl2x7x_write_thresh,
|
|
|
+ .read_event_config = &tsl2x7x_read_interrupt_config,
|
|
|
+ .write_event_config = &tsl2x7x_write_interrupt_config,
|
|
|
+ },
|
|
|
+ [ALSPRX2] = {
|
|
|
+ .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX2],
|
|
|
+ .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX],
|
|
|
+ .driver_module = THIS_MODULE,
|
|
|
+ .read_raw = &tsl2x7x_read_raw,
|
|
|
+ .write_raw = &tsl2x7x_write_raw,
|
|
|
+ .read_event_value = &tsl2x7x_read_thresh,
|
|
|
+ .write_event_value = &tsl2x7x_write_thresh,
|
|
|
+ .read_event_config = &tsl2x7x_read_interrupt_config,
|
|
|
+ .write_event_config = &tsl2x7x_write_interrupt_config,
|
|
|
+ },
|
|
|
+};
|
|
|
+
|
|
|
+static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
|
|
|
+ [ALS] = {
|
|
|
+ .channel = {
|
|
|
+ {
|
|
|
+ .type = IIO_LIGHT,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 0,
|
|
|
+ .info_mask = IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT,
|
|
|
+ }, {
|
|
|
+ .type = IIO_INTENSITY,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 0,
|
|
|
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT |
|
|
|
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
|
|
|
+ .event_mask = TSL2X7X_EVENT_MASK
|
|
|
+ }, {
|
|
|
+ .type = IIO_INTENSITY,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 1,
|
|
|
+ },
|
|
|
+ },
|
|
|
+ .chan_table_elements = 3,
|
|
|
+ .info = &tsl2X7X_device_info[ALS],
|
|
|
+ },
|
|
|
+ [PRX] = {
|
|
|
+ .channel = {
|
|
|
+ {
|
|
|
+ .type = IIO_PROXIMITY,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 0,
|
|
|
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
|
|
|
+ .event_mask = TSL2X7X_EVENT_MASK
|
|
|
+ },
|
|
|
+ },
|
|
|
+ .chan_table_elements = 1,
|
|
|
+ .info = &tsl2X7X_device_info[PRX],
|
|
|
+ },
|
|
|
+ [ALSPRX] = {
|
|
|
+ .channel = {
|
|
|
+ {
|
|
|
+ .type = IIO_LIGHT,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 0,
|
|
|
+ .info_mask = IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT
|
|
|
+ }, {
|
|
|
+ .type = IIO_INTENSITY,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 0,
|
|
|
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT |
|
|
|
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
|
|
|
+ .event_mask = TSL2X7X_EVENT_MASK
|
|
|
+ }, {
|
|
|
+ .type = IIO_INTENSITY,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 1,
|
|
|
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
|
|
|
+ }, {
|
|
|
+ .type = IIO_PROXIMITY,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 0,
|
|
|
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
|
|
|
+ .event_mask = TSL2X7X_EVENT_MASK
|
|
|
+ },
|
|
|
+ },
|
|
|
+ .chan_table_elements = 4,
|
|
|
+ .info = &tsl2X7X_device_info[ALSPRX],
|
|
|
+ },
|
|
|
+ [PRX2] = {
|
|
|
+ .channel = {
|
|
|
+ {
|
|
|
+ .type = IIO_PROXIMITY,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 0,
|
|
|
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT,
|
|
|
+ .event_mask = TSL2X7X_EVENT_MASK
|
|
|
+ },
|
|
|
+ },
|
|
|
+ .chan_table_elements = 1,
|
|
|
+ .info = &tsl2X7X_device_info[PRX2],
|
|
|
+ },
|
|
|
+ [ALSPRX2] = {
|
|
|
+ .channel = {
|
|
|
+ {
|
|
|
+ .type = IIO_LIGHT,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 0,
|
|
|
+ .info_mask = IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT,
|
|
|
+ }, {
|
|
|
+ .type = IIO_INTENSITY,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 0,
|
|
|
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT |
|
|
|
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
|
|
|
+ .event_mask = TSL2X7X_EVENT_MASK
|
|
|
+ }, {
|
|
|
+ .type = IIO_INTENSITY,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 1,
|
|
|
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
|
|
|
+ }, {
|
|
|
+ .type = IIO_PROXIMITY,
|
|
|
+ .indexed = 1,
|
|
|
+ .channel = 0,
|
|
|
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
|
|
|
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT,
|
|
|
+ .event_mask = TSL2X7X_EVENT_MASK
|
|
|
+ },
|
|
|
+ },
|
|
|
+ .chan_table_elements = 4,
|
|
|
+ .info = &tsl2X7X_device_info[ALSPRX2],
|
|
|
+ },
|
|
|
+};
|
|
|
+
|
|
|
+static int __devinit tsl2x7x_probe(struct i2c_client *clientp,
|
|
|
+ const struct i2c_device_id *id)
|
|
|
+{
|
|
|
+ int ret;
|
|
|
+ unsigned char device_id;
|
|
|
+ struct iio_dev *indio_dev;
|
|
|
+ struct tsl2X7X_chip *chip;
|
|
|
+
|
|
|
+ indio_dev = iio_allocate_device(sizeof(*chip));
|
|
|
+ if (!indio_dev)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ chip = iio_priv(indio_dev);
|
|
|
+ chip->client = clientp;
|
|
|
+ i2c_set_clientdata(clientp, indio_dev);
|
|
|
+
|
|
|
+ ret = tsl2x7x_i2c_read(chip->client,
|
|
|
+ TSL2X7X_CHIPID, &device_id);
|
|
|
+ if (ret < 0)
|
|
|
+ goto fail1;
|
|
|
+
|
|
|
+ if ((!tsl2x7x_device_id(&device_id, id->driver_data)) ||
|
|
|
+ (tsl2x7x_device_id(&device_id, id->driver_data) == -EINVAL)) {
|
|
|
+ dev_info(&chip->client->dev,
|
|
|
+ "%s: i2c device found does not match expected id\n",
|
|
|
+ __func__);
|
|
|
+ goto fail1;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = i2c_smbus_write_byte(clientp, (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(&clientp->dev, "%s: write to cmd reg failed. err = %d\n",
|
|
|
+ __func__, ret);
|
|
|
+ goto fail1;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* ALS and PROX functions can be invoked via user space poll
|
|
|
+ * or H/W interrupt. If busy return last sample. */
|
|
|
+ mutex_init(&chip->als_mutex);
|
|
|
+ mutex_init(&chip->prox_mutex);
|
|
|
+
|
|
|
+ chip->tsl2x7x_chip_status = TSL2X7X_CHIP_UNKNOWN;
|
|
|
+ chip->pdata = clientp->dev.platform_data;
|
|
|
+ chip->id = id->driver_data;
|
|
|
+ chip->chip_info =
|
|
|
+ &tsl2x7x_chip_info_tbl[device_channel_config[id->driver_data]];
|
|
|
+
|
|
|
+ indio_dev->info = chip->chip_info->info;
|
|
|
+ indio_dev->dev.parent = &clientp->dev;
|
|
|
+ indio_dev->modes = INDIO_DIRECT_MODE;
|
|
|
+ indio_dev->name = chip->client->name;
|
|
|
+ indio_dev->channels = chip->chip_info->channel;
|
|
|
+ indio_dev->num_channels = chip->chip_info->chan_table_elements;
|
|
|
+
|
|
|
+ if (clientp->irq) {
|
|
|
+ ret = request_threaded_irq(clientp->irq,
|
|
|
+ NULL,
|
|
|
+ &tsl2x7x_event_handler,
|
|
|
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
|
|
|
+ "TSL2X7X_event",
|
|
|
+ indio_dev);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(&clientp->dev,
|
|
|
+ "%s: irq request failed", __func__);
|
|
|
+ goto fail2;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Load up the defaults */
|
|
|
+ tsl2x7x_defaults(chip);
|
|
|
+ /* Make sure the chip is on */
|
|
|
+ tsl2x7x_chip_on(indio_dev);
|
|
|
+
|
|
|
+ ret = iio_device_register(indio_dev);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(&clientp->dev,
|
|
|
+ "%s: iio registration failed\n", __func__);
|
|
|
+ goto fail1;
|
|
|
+ }
|
|
|
+
|
|
|
+ dev_info(&clientp->dev, "%s Light sensor found.\n", id->name);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+fail1:
|
|
|
+ if (clientp->irq)
|
|
|
+ free_irq(clientp->irq, indio_dev);
|
|
|
+fail2:
|
|
|
+ iio_free_device(indio_dev);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int tsl2x7x_suspend(struct device *dev)
|
|
|
+{
|
|
|
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+ int ret = 0;
|
|
|
+
|
|
|
+ if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) {
|
|
|
+ ret = tsl2x7x_chip_off(indio_dev);
|
|
|
+ chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (chip->pdata && chip->pdata->platform_power) {
|
|
|
+ pm_message_t pmm = {PM_EVENT_SUSPEND};
|
|
|
+ chip->pdata->platform_power(dev, pmm);
|
|
|
+ }
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int tsl2x7x_resume(struct device *dev)
|
|
|
+{
|
|
|
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
|
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
+ int ret = 0;
|
|
|
+
|
|
|
+ if (chip->pdata && chip->pdata->platform_power) {
|
|
|
+ pm_message_t pmm = {PM_EVENT_RESUME};
|
|
|
+ chip->pdata->platform_power(dev, pmm);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_SUSPENDED)
|
|
|
+ ret = tsl2x7x_chip_on(indio_dev);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int __devexit tsl2x7x_remove(struct i2c_client *client)
|
|
|
+{
|
|
|
+ struct tsl2X7X_chip *chip = i2c_get_clientdata(client);
|
|
|
+ struct iio_dev *indio_dev = iio_priv_to_dev(chip);
|
|
|
+
|
|
|
+ tsl2x7x_chip_off(indio_dev);
|
|
|
+
|
|
|
+ iio_device_unregister(indio_dev);
|
|
|
+ if (client->irq)
|
|
|
+ free_irq(client->irq, chip->client->name);
|
|
|
+
|
|
|
+ iio_free_device(indio_dev);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static struct i2c_device_id tsl2x7x_idtable[] = {
|
|
|
+ { "tsl2571", tsl2571 },
|
|
|
+ { "tsl2671", tsl2671 },
|
|
|
+ { "tmd2671", tmd2671 },
|
|
|
+ { "tsl2771", tsl2771 },
|
|
|
+ { "tmd2771", tmd2771 },
|
|
|
+ { "tsl2572", tsl2572 },
|
|
|
+ { "tsl2672", tsl2672 },
|
|
|
+ { "tmd2672", tmd2672 },
|
|
|
+ { "tsl2772", tsl2772 },
|
|
|
+ { "tmd2772", tmd2772 },
|
|
|
+ {}
|
|
|
+};
|
|
|
+
|
|
|
+MODULE_DEVICE_TABLE(i2c, tsl2x7x_idtable);
|
|
|
+
|
|
|
+static const struct dev_pm_ops tsl2x7x_pm_ops = {
|
|
|
+ .suspend = tsl2x7x_suspend,
|
|
|
+ .resume = tsl2x7x_resume,
|
|
|
+};
|
|
|
+
|
|
|
+/* Driver definition */
|
|
|
+static struct i2c_driver tsl2x7x_driver = {
|
|
|
+ .driver = {
|
|
|
+ .name = "tsl2x7x",
|
|
|
+ .pm = &tsl2x7x_pm_ops,
|
|
|
+ },
|
|
|
+ .id_table = tsl2x7x_idtable,
|
|
|
+ .probe = tsl2x7x_probe,
|
|
|
+ .remove = __devexit_p(tsl2x7x_remove),
|
|
|
+};
|
|
|
+
|
|
|
+module_i2c_driver(tsl2x7x_driver);
|
|
|
+
|
|
|
+MODULE_AUTHOR("J. August Brenner<jbrenner@taosinc.com>");
|
|
|
+MODULE_DESCRIPTION("TAOS tsl2x7x ambient and proximity light sensor driver");
|
|
|
+MODULE_LICENSE("GPL");
|
Jon Brenner