| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Amit Kucheria | 1997 | 54.15% | 1 | 2.04% |
| Jonathan Cameron | 1166 | 31.62% | 25 | 51.02% |
| Lars-Peter Clausen | 190 | 5.15% | 4 | 8.16% |
| Bryan Freed | 84 | 2.28% | 3 | 6.12% |
| Grant Grundler | 72 | 1.95% | 1 | 2.04% |
| Javier Martinez Canillas | 51 | 1.38% | 1 | 2.04% |
| Ivaylo Dimitrov | 31 | 0.84% | 1 | 2.04% |
| Sebastian Reichel | 28 | 0.76% | 1 | 2.04% |
| Sachin Kamat | 26 | 0.70% | 1 | 2.04% |
| Peter Meerwald-Stadler | 18 | 0.49% | 1 | 2.04% |
| Dan Carpenter | 7 | 0.19% | 2 | 4.08% |
| Maxin B. John | 5 | 0.14% | 1 | 2.04% |
| Grégor Boirie | 3 | 0.08% | 1 | 2.04% |
| Tejun Heo | 3 | 0.08% | 1 | 2.04% |
| Thomas Gleixner | 2 | 0.05% | 1 | 2.04% |
| Derek Basehore | 2 | 0.05% | 1 | 2.04% |
| Amitoj Kaur Chawla | 1 | 0.03% | 1 | 2.04% |
| Nishant Malpani | 1 | 0.03% | 1 | 2.04% |
| Akinobu Mita | 1 | 0.03% | 1 | 2.04% |
| Total | 3688 | 49 |
// SPDX-License-Identifier: GPL-2.0-only /* * drivers/iio/light/tsl2563.c * * Copyright (C) 2008 Nokia Corporation * * Written by Timo O. Karjalainen <timo.o.karjalainen@nokia.com> * Contact: Amit Kucheria <amit.kucheria@verdurent.com> * * Converted to IIO driver * Amit Kucheria <amit.kucheria@verdurent.com> */ #include <linux/module.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/sched.h> #include <linux/mutex.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/err.h> #include <linux/slab.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #include <linux/iio/events.h> #include <linux/platform_data/tsl2563.h> /* Use this many bits for fraction part. */ #define ADC_FRAC_BITS 14 /* Given number of 1/10000's in ADC_FRAC_BITS precision. */ #define FRAC10K(f) (((f) * (1L << (ADC_FRAC_BITS))) / (10000)) /* Bits used for fraction in calibration coefficients.*/ #define CALIB_FRAC_BITS 10 /* 0.5 in CALIB_FRAC_BITS precision */ #define CALIB_FRAC_HALF (1 << (CALIB_FRAC_BITS - 1)) /* Make a fraction from a number n that was multiplied with b. */ #define CALIB_FRAC(n, b) (((n) << CALIB_FRAC_BITS) / (b)) /* Decimal 10^(digits in sysfs presentation) */ #define CALIB_BASE_SYSFS 1000 #define TSL2563_CMD 0x80 #define TSL2563_CLEARINT 0x40 #define TSL2563_REG_CTRL 0x00 #define TSL2563_REG_TIMING 0x01 #define TSL2563_REG_LOWLOW 0x02 /* data0 low threshold, 2 bytes */ #define TSL2563_REG_LOWHIGH 0x03 #define TSL2563_REG_HIGHLOW 0x04 /* data0 high threshold, 2 bytes */ #define TSL2563_REG_HIGHHIGH 0x05 #define TSL2563_REG_INT 0x06 #define TSL2563_REG_ID 0x0a #define TSL2563_REG_DATA0LOW 0x0c /* broadband sensor value, 2 bytes */ #define TSL2563_REG_DATA0HIGH 0x0d #define TSL2563_REG_DATA1LOW 0x0e /* infrared sensor value, 2 bytes */ #define TSL2563_REG_DATA1HIGH 0x0f #define TSL2563_CMD_POWER_ON 0x03 #define TSL2563_CMD_POWER_OFF 0x00 #define TSL2563_CTRL_POWER_MASK 0x03 #define TSL2563_TIMING_13MS 0x00 #define TSL2563_TIMING_100MS 0x01 #define TSL2563_TIMING_400MS 0x02 #define TSL2563_TIMING_MASK 0x03 #define TSL2563_TIMING_GAIN16 0x10 #define TSL2563_TIMING_GAIN1 0x00 #define TSL2563_INT_DISABLED 0x00 #define TSL2563_INT_LEVEL 0x10 #define TSL2563_INT_PERSIST(n) ((n) & 0x0F) struct tsl2563_gainlevel_coeff { u8 gaintime; u16 min; u16 max; }; static const struct tsl2563_gainlevel_coeff tsl2563_gainlevel_table[] = { { .gaintime = TSL2563_TIMING_400MS | TSL2563_TIMING_GAIN16, .min = 0, .max = 65534, }, { .gaintime = TSL2563_TIMING_400MS | TSL2563_TIMING_GAIN1, .min = 2048, .max = 65534, }, { .gaintime = TSL2563_TIMING_100MS | TSL2563_TIMING_GAIN1, .min = 4095, .max = 37177, }, { .gaintime = TSL2563_TIMING_13MS | TSL2563_TIMING_GAIN1, .min = 3000, .max = 65535, }, }; struct tsl2563_chip { struct mutex lock; struct i2c_client *client; struct delayed_work poweroff_work; /* Remember state for suspend and resume functions */ bool suspended; struct tsl2563_gainlevel_coeff const *gainlevel; u16 low_thres; u16 high_thres; u8 intr; bool int_enabled; /* Calibration coefficients */ u32 calib0; u32 calib1; int cover_comp_gain; /* Cache current values, to be returned while suspended */ u32 data0; u32 data1; }; static int tsl2563_set_power(struct tsl2563_chip *chip, int on) { struct i2c_client *client = chip->client; u8 cmd; cmd = on ? TSL2563_CMD_POWER_ON : TSL2563_CMD_POWER_OFF; return i2c_smbus_write_byte_data(client, TSL2563_CMD | TSL2563_REG_CTRL, cmd); } /* * Return value is 0 for off, 1 for on, or a negative error * code if reading failed. */ static int tsl2563_get_power(struct tsl2563_chip *chip) { struct i2c_client *client = chip->client; int ret; ret = i2c_smbus_read_byte_data(client, TSL2563_CMD | TSL2563_REG_CTRL); if (ret < 0) return ret; return (ret & TSL2563_CTRL_POWER_MASK) == TSL2563_CMD_POWER_ON; } static int tsl2563_configure(struct tsl2563_chip *chip) { int ret; ret = i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_TIMING, chip->gainlevel->gaintime); if (ret) goto error_ret; ret = i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_HIGHLOW, chip->high_thres & 0xFF); if (ret) goto error_ret; ret = i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_HIGHHIGH, (chip->high_thres >> 8) & 0xFF); if (ret) goto error_ret; ret = i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_LOWLOW, chip->low_thres & 0xFF); if (ret) goto error_ret; ret = i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_LOWHIGH, (chip->low_thres >> 8) & 0xFF); /* * Interrupt register is automatically written anyway if it is relevant * so is not here. */ error_ret: return ret; } static void tsl2563_poweroff_work(struct work_struct *work) { struct tsl2563_chip *chip = container_of(work, struct tsl2563_chip, poweroff_work.work); tsl2563_set_power(chip, 0); } static int tsl2563_detect(struct tsl2563_chip *chip) { int ret; ret = tsl2563_set_power(chip, 1); if (ret) return ret; ret = tsl2563_get_power(chip); if (ret < 0) return ret; return ret ? 0 : -ENODEV; } static int tsl2563_read_id(struct tsl2563_chip *chip, u8 *id) { struct i2c_client *client = chip->client; int ret; ret = i2c_smbus_read_byte_data(client, TSL2563_CMD | TSL2563_REG_ID); if (ret < 0) return ret; *id = ret; return 0; } /* * "Normalized" ADC value is one obtained with 400ms of integration time and * 16x gain. This function returns the number of bits of shift needed to * convert between normalized values and HW values obtained using given * timing and gain settings. */ static int tsl2563_adc_shiftbits(u8 timing) { int shift = 0; switch (timing & TSL2563_TIMING_MASK) { case TSL2563_TIMING_13MS: shift += 5; break; case TSL2563_TIMING_100MS: shift += 2; break; case TSL2563_TIMING_400MS: /* no-op */ break; } if (!(timing & TSL2563_TIMING_GAIN16)) shift += 4; return shift; } /* Convert a HW ADC value to normalized scale. */ static u32 tsl2563_normalize_adc(u16 adc, u8 timing) { return adc << tsl2563_adc_shiftbits(timing); } static void tsl2563_wait_adc(struct tsl2563_chip *chip) { unsigned int delay; switch (chip->gainlevel->gaintime & TSL2563_TIMING_MASK) { case TSL2563_TIMING_13MS: delay = 14; break; case TSL2563_TIMING_100MS: delay = 101; break; default: delay = 402; } /* * TODO: Make sure that we wait at least required delay but why we * have to extend it one tick more? */ schedule_timeout_interruptible(msecs_to_jiffies(delay) + 2); } static int tsl2563_adjust_gainlevel(struct tsl2563_chip *chip, u16 adc) { struct i2c_client *client = chip->client; if (adc > chip->gainlevel->max || adc < chip->gainlevel->min) { (adc > chip->gainlevel->max) ? chip->gainlevel++ : chip->gainlevel--; i2c_smbus_write_byte_data(client, TSL2563_CMD | TSL2563_REG_TIMING, chip->gainlevel->gaintime); tsl2563_wait_adc(chip); tsl2563_wait_adc(chip); return 1; } else return 0; } static int tsl2563_get_adc(struct tsl2563_chip *chip) { struct i2c_client *client = chip->client; u16 adc0, adc1; int retry = 1; int ret = 0; if (chip->suspended) goto out; if (!chip->int_enabled) { cancel_delayed_work(&chip->poweroff_work); if (!tsl2563_get_power(chip)) { ret = tsl2563_set_power(chip, 1); if (ret) goto out; ret = tsl2563_configure(chip); if (ret) goto out; tsl2563_wait_adc(chip); } } while (retry) { ret = i2c_smbus_read_word_data(client, TSL2563_CMD | TSL2563_REG_DATA0LOW); if (ret < 0) goto out; adc0 = ret; ret = i2c_smbus_read_word_data(client, TSL2563_CMD | TSL2563_REG_DATA1LOW); if (ret < 0) goto out; adc1 = ret; retry = tsl2563_adjust_gainlevel(chip, adc0); } chip->data0 = tsl2563_normalize_adc(adc0, chip->gainlevel->gaintime); chip->data1 = tsl2563_normalize_adc(adc1, chip->gainlevel->gaintime); if (!chip->int_enabled) schedule_delayed_work(&chip->poweroff_work, 5 * HZ); ret = 0; out: return ret; } static inline int tsl2563_calib_to_sysfs(u32 calib) { return (int) (((calib * CALIB_BASE_SYSFS) + CALIB_FRAC_HALF) >> CALIB_FRAC_BITS); } static inline u32 tsl2563_calib_from_sysfs(int value) { return (((u32) value) << CALIB_FRAC_BITS) / CALIB_BASE_SYSFS; } /* * Conversions between lux and ADC values. * * The basic formula is lux = c0 * adc0 - c1 * adc1, where c0 and c1 are * appropriate constants. Different constants are needed for different * kinds of light, determined by the ratio adc1/adc0 (basically the ratio * of the intensities in infrared and visible wavelengths). lux_table below * lists the upper threshold of the adc1/adc0 ratio and the corresponding * constants. */ struct tsl2563_lux_coeff { unsigned long ch_ratio; unsigned long ch0_coeff; unsigned long ch1_coeff; }; static const struct tsl2563_lux_coeff lux_table[] = { { .ch_ratio = FRAC10K(1300), .ch0_coeff = FRAC10K(315), .ch1_coeff = FRAC10K(262), }, { .ch_ratio = FRAC10K(2600), .ch0_coeff = FRAC10K(337), .ch1_coeff = FRAC10K(430), }, { .ch_ratio = FRAC10K(3900), .ch0_coeff = FRAC10K(363), .ch1_coeff = FRAC10K(529), }, { .ch_ratio = FRAC10K(5200), .ch0_coeff = FRAC10K(392), .ch1_coeff = FRAC10K(605), }, { .ch_ratio = FRAC10K(6500), .ch0_coeff = FRAC10K(229), .ch1_coeff = FRAC10K(291), }, { .ch_ratio = FRAC10K(8000), .ch0_coeff = FRAC10K(157), .ch1_coeff = FRAC10K(180), }, { .ch_ratio = FRAC10K(13000), .ch0_coeff = FRAC10K(34), .ch1_coeff = FRAC10K(26), }, { .ch_ratio = ULONG_MAX, .ch0_coeff = 0, .ch1_coeff = 0, }, }; /* Convert normalized, scaled ADC values to lux. */ static unsigned int tsl2563_adc_to_lux(u32 adc0, u32 adc1) { const struct tsl2563_lux_coeff *lp = lux_table; unsigned long ratio, lux, ch0 = adc0, ch1 = adc1; ratio = ch0 ? ((ch1 << ADC_FRAC_BITS) / ch0) : ULONG_MAX; while (lp->ch_ratio < ratio) lp++; lux = ch0 * lp->ch0_coeff - ch1 * lp->ch1_coeff; return (unsigned int) (lux >> ADC_FRAC_BITS); } /* Apply calibration coefficient to ADC count. */ static u32 tsl2563_calib_adc(u32 adc, u32 calib) { unsigned long scaled = adc; scaled *= calib; scaled >>= CALIB_FRAC_BITS; return (u32) scaled; } static int tsl2563_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { struct tsl2563_chip *chip = iio_priv(indio_dev); if (mask != IIO_CHAN_INFO_CALIBSCALE) return -EINVAL; if (chan->channel2 == IIO_MOD_LIGHT_BOTH) chip->calib0 = tsl2563_calib_from_sysfs(val); else if (chan->channel2 == IIO_MOD_LIGHT_IR) chip->calib1 = tsl2563_calib_from_sysfs(val); else return -EINVAL; return 0; } static int tsl2563_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { int ret = -EINVAL; u32 calib0, calib1; struct tsl2563_chip *chip = iio_priv(indio_dev); mutex_lock(&chip->lock); switch (mask) { case IIO_CHAN_INFO_RAW: case IIO_CHAN_INFO_PROCESSED: switch (chan->type) { case IIO_LIGHT: ret = tsl2563_get_adc(chip); if (ret) goto error_ret; calib0 = tsl2563_calib_adc(chip->data0, chip->calib0) * chip->cover_comp_gain; calib1 = tsl2563_calib_adc(chip->data1, chip->calib1) * chip->cover_comp_gain; *val = tsl2563_adc_to_lux(calib0, calib1); ret = IIO_VAL_INT; break; case IIO_INTENSITY: ret = tsl2563_get_adc(chip); if (ret) goto error_ret; if (chan->channel2 == IIO_MOD_LIGHT_BOTH) *val = chip->data0; else *val = chip->data1; ret = IIO_VAL_INT; break; default: break; } break; case IIO_CHAN_INFO_CALIBSCALE: if (chan->channel2 == IIO_MOD_LIGHT_BOTH) *val = tsl2563_calib_to_sysfs(chip->calib0); else *val = tsl2563_calib_to_sysfs(chip->calib1); ret = IIO_VAL_INT; break; default: ret = -EINVAL; goto error_ret; } error_ret: mutex_unlock(&chip->lock); return ret; } static const struct iio_event_spec tsl2563_events[] = { { .type = IIO_EV_TYPE_THRESH, .dir = IIO_EV_DIR_RISING, .mask_separate = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_ENABLE), }, { .type = IIO_EV_TYPE_THRESH, .dir = IIO_EV_DIR_FALLING, .mask_separate = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_ENABLE), }, }; static const struct iio_chan_spec tsl2563_channels[] = { { .type = IIO_LIGHT, .indexed = 1, .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), .channel = 0, }, { .type = IIO_INTENSITY, .modified = 1, .channel2 = IIO_MOD_LIGHT_BOTH, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_CALIBSCALE), .event_spec = tsl2563_events, .num_event_specs = ARRAY_SIZE(tsl2563_events), }, { .type = IIO_INTENSITY, .modified = 1, .channel2 = IIO_MOD_LIGHT_IR, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_CALIBSCALE), } }; static int tsl2563_read_thresh(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int *val, int *val2) { struct tsl2563_chip *chip = iio_priv(indio_dev); switch (dir) { case IIO_EV_DIR_RISING: *val = chip->high_thres; break; case IIO_EV_DIR_FALLING: *val = chip->low_thres; break; default: return -EINVAL; } return IIO_VAL_INT; } static int tsl2563_write_thresh(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int val, int val2) { struct tsl2563_chip *chip = iio_priv(indio_dev); int ret; u8 address; if (dir == IIO_EV_DIR_RISING) address = TSL2563_REG_HIGHLOW; else address = TSL2563_REG_LOWLOW; mutex_lock(&chip->lock); ret = i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | address, val & 0xFF); if (ret) goto error_ret; ret = i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | (address + 1), (val >> 8) & 0xFF); if (dir == IIO_EV_DIR_RISING) chip->high_thres = val; else chip->low_thres = val; error_ret: mutex_unlock(&chip->lock); return ret; } static irqreturn_t tsl2563_event_handler(int irq, void *private) { struct iio_dev *dev_info = private; struct tsl2563_chip *chip = iio_priv(dev_info); iio_push_event(dev_info, IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0, IIO_EV_TYPE_THRESH, IIO_EV_DIR_EITHER), iio_get_time_ns(dev_info)); /* clear the interrupt and push the event */ i2c_smbus_write_byte(chip->client, TSL2563_CMD | TSL2563_CLEARINT); return IRQ_HANDLED; } static int tsl2563_write_interrupt_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, int state) { struct tsl2563_chip *chip = iio_priv(indio_dev); int ret = 0; mutex_lock(&chip->lock); if (state && !(chip->intr & 0x30)) { chip->intr &= ~0x30; chip->intr |= 0x10; /* ensure the chip is actually on */ cancel_delayed_work(&chip->poweroff_work); if (!tsl2563_get_power(chip)) { ret = tsl2563_set_power(chip, 1); if (ret) goto out; ret = tsl2563_configure(chip); if (ret) goto out; } ret = i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_INT, chip->intr); chip->int_enabled = true; } if (!state && (chip->intr & 0x30)) { chip->intr &= ~0x30; ret = i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_INT, chip->intr); chip->int_enabled = false; /* now the interrupt is not enabled, we can go to sleep */ schedule_delayed_work(&chip->poweroff_work, 5 * HZ); } out: mutex_unlock(&chip->lock); return ret; } static int tsl2563_read_interrupt_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir) { struct tsl2563_chip *chip = iio_priv(indio_dev); int ret; mutex_lock(&chip->lock); ret = i2c_smbus_read_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_INT); mutex_unlock(&chip->lock); if (ret < 0) return ret; return !!(ret & 0x30); } static const struct iio_info tsl2563_info_no_irq = { .read_raw = &tsl2563_read_raw, .write_raw = &tsl2563_write_raw, }; static const struct iio_info tsl2563_info = { .read_raw = &tsl2563_read_raw, .write_raw = &tsl2563_write_raw, .read_event_value = &tsl2563_read_thresh, .write_event_value = &tsl2563_write_thresh, .read_event_config = &tsl2563_read_interrupt_config, .write_event_config = &tsl2563_write_interrupt_config, }; static int tsl2563_probe(struct i2c_client *client, const struct i2c_device_id *device_id) { struct iio_dev *indio_dev; struct tsl2563_chip *chip; struct tsl2563_platform_data *pdata = client->dev.platform_data; struct device_node *np = client->dev.of_node; int err = 0; u8 id = 0; indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip)); if (!indio_dev) return -ENOMEM; chip = iio_priv(indio_dev); i2c_set_clientdata(client, chip); chip->client = client; err = tsl2563_detect(chip); if (err) { dev_err(&client->dev, "detect error %d\n", -err); return err; } err = tsl2563_read_id(chip, &id); if (err) { dev_err(&client->dev, "read id error %d\n", -err); return err; } mutex_init(&chip->lock); /* Default values used until userspace says otherwise */ chip->low_thres = 0x0; chip->high_thres = 0xffff; chip->gainlevel = tsl2563_gainlevel_table; chip->intr = TSL2563_INT_PERSIST(4); chip->calib0 = tsl2563_calib_from_sysfs(CALIB_BASE_SYSFS); chip->calib1 = tsl2563_calib_from_sysfs(CALIB_BASE_SYSFS); if (pdata) chip->cover_comp_gain = pdata->cover_comp_gain; else if (np) of_property_read_u32(np, "amstaos,cover-comp-gain", &chip->cover_comp_gain); else chip->cover_comp_gain = 1; dev_info(&client->dev, "model %d, rev. %d\n", id >> 4, id & 0x0f); indio_dev->name = client->name; indio_dev->channels = tsl2563_channels; indio_dev->num_channels = ARRAY_SIZE(tsl2563_channels); indio_dev->dev.parent = &client->dev; indio_dev->modes = INDIO_DIRECT_MODE; if (client->irq) indio_dev->info = &tsl2563_info; else indio_dev->info = &tsl2563_info_no_irq; if (client->irq) { err = devm_request_threaded_irq(&client->dev, client->irq, NULL, &tsl2563_event_handler, IRQF_TRIGGER_RISING | IRQF_ONESHOT, "tsl2563_event", indio_dev); if (err) { dev_err(&client->dev, "irq request error %d\n", -err); return err; } } err = tsl2563_configure(chip); if (err) { dev_err(&client->dev, "configure error %d\n", -err); return err; } INIT_DELAYED_WORK(&chip->poweroff_work, tsl2563_poweroff_work); /* The interrupt cannot yet be enabled so this is fine without lock */ schedule_delayed_work(&chip->poweroff_work, 5 * HZ); err = iio_device_register(indio_dev); if (err) { dev_err(&client->dev, "iio registration error %d\n", -err); goto fail; } return 0; fail: cancel_delayed_work_sync(&chip->poweroff_work); return err; } static int tsl2563_remove(struct i2c_client *client) { struct tsl2563_chip *chip = i2c_get_clientdata(client); struct iio_dev *indio_dev = iio_priv_to_dev(chip); iio_device_unregister(indio_dev); if (!chip->int_enabled) cancel_delayed_work(&chip->poweroff_work); /* Ensure that interrupts are disabled - then flush any bottom halves */ chip->intr &= ~0x30; i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_INT, chip->intr); flush_scheduled_work(); tsl2563_set_power(chip, 0); return 0; } #ifdef CONFIG_PM_SLEEP static int tsl2563_suspend(struct device *dev) { struct tsl2563_chip *chip = i2c_get_clientdata(to_i2c_client(dev)); int ret; mutex_lock(&chip->lock); ret = tsl2563_set_power(chip, 0); if (ret) goto out; chip->suspended = true; out: mutex_unlock(&chip->lock); return ret; } static int tsl2563_resume(struct device *dev) { struct tsl2563_chip *chip = i2c_get_clientdata(to_i2c_client(dev)); int ret; mutex_lock(&chip->lock); ret = tsl2563_set_power(chip, 1); if (ret) goto out; ret = tsl2563_configure(chip); if (ret) goto out; chip->suspended = false; out: mutex_unlock(&chip->lock); return ret; } static SIMPLE_DEV_PM_OPS(tsl2563_pm_ops, tsl2563_suspend, tsl2563_resume); #define TSL2563_PM_OPS (&tsl2563_pm_ops) #else #define TSL2563_PM_OPS NULL #endif static const struct i2c_device_id tsl2563_id[] = { { "tsl2560", 0 }, { "tsl2561", 1 }, { "tsl2562", 2 }, { "tsl2563", 3 }, {} }; MODULE_DEVICE_TABLE(i2c, tsl2563_id); static const struct of_device_id tsl2563_of_match[] = { { .compatible = "amstaos,tsl2560" }, { .compatible = "amstaos,tsl2561" }, { .compatible = "amstaos,tsl2562" }, { .compatible = "amstaos,tsl2563" }, {} }; MODULE_DEVICE_TABLE(of, tsl2563_of_match); static struct i2c_driver tsl2563_i2c_driver = { .driver = { .name = "tsl2563", .of_match_table = tsl2563_of_match, .pm = TSL2563_PM_OPS, }, .probe = tsl2563_probe, .remove = tsl2563_remove, .id_table = tsl2563_id, }; module_i2c_driver(tsl2563_i2c_driver); MODULE_AUTHOR("Nokia Corporation"); MODULE_DESCRIPTION("tsl2563 light sensor driver"); MODULE_LICENSE("GPL");
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