From cbcdf4dd4fb109141b60da7b224895b88dbdff19 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Wed, 18 May 2011 14:41:45 +0100 Subject: [PATCH] staging:iio:light:tsl2563: chan_spec based channel setup. Makes a small interface change by splitting event _en attr in two. Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/light/tsl2563.c | 323 ++++++++++------------------ 1 file changed, 117 insertions(+), 206 deletions(-) diff --git a/drivers/staging/iio/light/tsl2563.c b/drivers/staging/iio/light/tsl2563.c index d61308669c7..ded305321c0 100644 --- a/drivers/staging/iio/light/tsl2563.c +++ b/drivers/staging/iio/light/tsl2563.c @@ -464,31 +464,6 @@ static unsigned int adc_to_lux(u32 adc0, u32 adc1) /* Sysfs interface */ /*--------------------------------------------------------------*/ -static ssize_t tsl2563_adc_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct tsl2563_chip *chip = iio_priv(dev_get_drvdata(dev)); - struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); - int ret; - - mutex_lock(&chip->lock); - - ret = tsl2563_get_adc(chip); - if (ret) - goto out; - - switch (this_attr->address) { - case 0: - ret = snprintf(buf, PAGE_SIZE, "%d\n", chip->data0); - break; - case 1: - ret = snprintf(buf, PAGE_SIZE, "%d\n", chip->data1); - break; - } -out: - mutex_unlock(&chip->lock); - return ret; -} /* Apply calibration coefficient to ADC count. */ static u32 calib_adc(u32 adc, u32 calib) @@ -501,180 +476,138 @@ static u32 calib_adc(u32 adc, u32 calib) return (u32) scaled; } -static ssize_t tsl2563_lux_show(struct device *dev, - struct device_attribute *attr, char *buf) +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(dev_get_drvdata(dev)); - u32 calib0, calib1; - int ret; - - mutex_lock(&chip->lock); - - ret = tsl2563_get_adc(chip); - if (ret) - goto out; - - calib0 = calib_adc(chip->data0, chip->calib0) * chip->cover_comp_gain; - calib1 = calib_adc(chip->data1, chip->calib1) * chip->cover_comp_gain; - - ret = snprintf(buf, PAGE_SIZE, "%d\n", adc_to_lux(calib0, calib1)); + struct tsl2563_chip *chip = iio_priv(indio_dev); -out: - mutex_unlock(&chip->lock); - return ret; -} + if (chan->channel == 0) + chip->calib0 = calib_from_sysfs(val); + else + chip->calib1 = calib_from_sysfs(val); -static ssize_t format_calib(char *buf, int len, u32 calib) -{ - return snprintf(buf, PAGE_SIZE, "%d\n", calib_to_sysfs(calib)); + return 0; } -static ssize_t tsl2563_calib_show(struct device *dev, - struct device_attribute *attr, char *buf) +static int tsl2563_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, + int *val2, + long m) { - struct tsl2563_chip *chip = iio_priv(dev_get_drvdata(dev)); - struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); - int ret; + int ret = -EINVAL; + u32 calib0, calib1; + struct tsl2563_chip *chip = iio_priv(indio_dev); mutex_lock(&chip->lock); - switch (this_attr->address) { + switch (m) { case 0: - ret = format_calib(buf, PAGE_SIZE, chip->calib0); + switch (chan->type) { + case IIO_LIGHT: + ret = tsl2563_get_adc(chip); + if (ret) + goto error_ret; + calib0 = calib_adc(chip->data0, chip->calib0) * + chip->cover_comp_gain; + calib1 = calib_adc(chip->data1, chip->calib1) * + chip->cover_comp_gain; + *val = 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->channel == 0) + *val = chip->data0; + else + *val = chip->data1; + ret = IIO_VAL_INT; + break; + default: + break; + } break; - case 1: - ret = format_calib(buf, PAGE_SIZE, chip->calib1); + + case (1 << IIO_CHAN_INFO_CALIBSCALE_SEPARATE): + if (chan->channel == 0) + *val = calib_to_sysfs(chip->calib0); + else + *val = calib_to_sysfs(chip->calib1); + ret = IIO_VAL_INT; break; default: - ret = -ENODEV; - } - mutex_unlock(&chip->lock); - return ret; -} - -static ssize_t tsl2563_calib_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) -{ - struct tsl2563_chip *chip = iio_priv(dev_get_drvdata(dev)); - struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); - int value; - u32 calib; - - if (1 != sscanf(buf, "%d", &value)) return -EINVAL; - - calib = calib_from_sysfs(value); - - switch (this_attr->address) { - case 0: - chip->calib0 = calib; - break; - case 1: - chip->calib1 = calib; - break; } - return len; -} - -static IIO_DEVICE_ATTR(intensity0_both_raw, S_IRUGO, - tsl2563_adc_show, NULL, 0); -static IIO_DEVICE_ATTR(intensity1_ir_raw, S_IRUGO, - tsl2563_adc_show, NULL, 1); -static DEVICE_ATTR(illuminance0_input, S_IRUGO, tsl2563_lux_show, NULL); -static IIO_DEVICE_ATTR(intensity0_both_calibgain, S_IRUGO | S_IWUSR, - tsl2563_calib_show, tsl2563_calib_store, 0); -static IIO_DEVICE_ATTR(intensity1_ir_calibgain, S_IRUGO | S_IWUSR, - tsl2563_calib_show, tsl2563_calib_store, 1); - -static ssize_t tsl2563_show_name(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct tsl2563_chip *chip = iio_priv(dev_get_drvdata(dev)); - return sprintf(buf, "%s\n", chip->client->name); +error_ret: + mutex_unlock(&chip->lock); + return ret; } -static DEVICE_ATTR(name, S_IRUGO, tsl2563_show_name, NULL); - -static struct attribute *tsl2563_attributes[] = { - &iio_dev_attr_intensity0_both_raw.dev_attr.attr, - &iio_dev_attr_intensity1_ir_raw.dev_attr.attr, - &dev_attr_illuminance0_input.attr, - &iio_dev_attr_intensity0_both_calibgain.dev_attr.attr, - &iio_dev_attr_intensity1_ir_calibgain.dev_attr.attr, - &dev_attr_name.attr, - NULL +static const struct iio_chan_spec tsl2563_channels[] = { + IIO_CHAN(IIO_LIGHT, 0, 1, 1, NULL, 0, 0, 0, 0, 0, {}, 0), + IIO_CHAN(IIO_INTENSITY, 1, 1, 0, "both", 0, + (1 << IIO_CHAN_INFO_CALIBSCALE_SEPARATE), 0, 0, 0, {}, + IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING) | + IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING)), + IIO_CHAN(IIO_INTENSITY, 1, 1, 0, "ir", 1, + (1 << IIO_CHAN_INFO_CALIBSCALE_SEPARATE), 0, 0, 0, {}, + 0) }; -static const struct attribute_group tsl2563_group = { - .attrs = tsl2563_attributes, -}; - -static ssize_t tsl2563_read_thresh(struct device *dev, - struct device_attribute *attr, - char *buf) +static int tsl2563_read_thresh(struct iio_dev *indio_dev, + int event_code, + int *val) { - struct tsl2563_chip *chip = iio_priv(dev_get_drvdata(dev)); - struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); - u16 val = 0; - switch (this_attr->address) { - case TSL2563_REG_HIGHLOW: - val = chip->high_thres; + struct tsl2563_chip *chip = iio_priv(indio_dev); + + switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) { + case IIO_EV_DIR_RISING: + *val = chip->high_thres; break; - case TSL2563_REG_LOWLOW: - val = chip->low_thres; + case IIO_EV_DIR_FALLING: + *val = chip->low_thres; break; + default: + return -EINVAL; } - return snprintf(buf, PAGE_SIZE, "%d\n", val); + + return 0; } -static ssize_t tsl2563_write_thresh(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) +static ssize_t tsl2563_write_thresh(struct iio_dev *indio_dev, + int event_code, + int val) { - struct tsl2563_chip *chip = iio_priv(dev_get_drvdata(dev)); - struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); - unsigned long val; + struct tsl2563_chip *chip = iio_priv(indio_dev); int ret; + u8 address; - ret = strict_strtoul(buf, 10, &val); - if (ret) - return ret; + if (IIO_EVENT_CODE_EXTRACT_DIR(event_code) == IIO_EV_DIR_RISING) + address = TSL2563_REG_HIGHLOW; + else + address = TSL2563_REG_LOWLOW; mutex_lock(&chip->lock); - ret = tsl2563_write(chip->client, this_attr->address, val & 0xFF); + ret = tsl2563_write(chip->client, address, val & 0xFF); if (ret) goto error_ret; - ret = tsl2563_write(chip->client, this_attr->address + 1, + ret = tsl2563_write(chip->client, address + 1, (val >> 8) & 0xFF); - switch (this_attr->address) { - case TSL2563_REG_HIGHLOW: + if (IIO_EVENT_CODE_EXTRACT_DIR(event_code) == IIO_EV_DIR_RISING) chip->high_thres = val; - break; - case TSL2563_REG_LOWLOW: + else chip->low_thres = val; - break; - } error_ret: mutex_unlock(&chip->lock); - return ret < 0 ? ret : len; + return ret; } -static IIO_DEVICE_ATTR(intensity0_both_raw_thresh_rising_value, - S_IRUGO | S_IWUSR, - tsl2563_read_thresh, - tsl2563_write_thresh, - TSL2563_REG_HIGHLOW); - -static IIO_DEVICE_ATTR(intensity0_both_raw_thresh_falling_value, - S_IRUGO | S_IWUSR, - tsl2563_read_thresh, - tsl2563_write_thresh, - TSL2563_REG_LOWLOW); - static irqreturn_t tsl2563_event_handler(int irq, void *private) { struct iio_dev *dev_info = private; @@ -693,20 +626,15 @@ static irqreturn_t tsl2563_event_handler(int irq, void *private) return IRQ_HANDLED; } -static ssize_t tsl2563_write_interrupt_config(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) +static int tsl2563_write_interrupt_config(struct iio_dev *indio_dev, + int event_code, + int state) { - struct iio_dev *indio_dev = dev_get_drvdata(dev); struct tsl2563_chip *chip = iio_priv(indio_dev); - int input, ret = 0; + int ret = 0; - ret = sscanf(buf, "%d", &input); - if (ret != 1) - return -EINVAL; mutex_lock(&chip->lock); - if (input && !(chip->intr & 0x30)) { + if (state && !(chip->intr & 0x30)) { chip->intr &= ~0x30; chip->intr |= 0x10; /* ensure the chip is actually on */ @@ -723,7 +651,7 @@ static ssize_t tsl2563_write_interrupt_config(struct device *dev, chip->int_enabled = true; } - if (!input && (chip->intr & 0x30)) { + if (!state && (chip->intr & 0x30)) { chip->intr |= ~0x30; ret = tsl2563_write(chip->client, TSL2563_REG_INT, chip->intr); chip->int_enabled = false; @@ -733,47 +661,27 @@ static ssize_t tsl2563_write_interrupt_config(struct device *dev, out: mutex_unlock(&chip->lock); - return (ret < 0) ? ret : len; + return ret; } -static ssize_t tsl2563_read_interrupt_config(struct device *dev, - struct device_attribute *attr, - char *buf) +static int tsl2563_read_interrupt_config(struct iio_dev *indio_dev, + int event_code) { - struct tsl2563_chip *chip = iio_priv(dev_get_drvdata(dev)); - int ret; + struct tsl2563_chip *chip = iio_priv(indio_dev); u8 rxbuf; - ssize_t len; + int ret; mutex_lock(&chip->lock); - ret = tsl2563_read(chip->client, - TSL2563_REG_INT, - &rxbuf, - sizeof(rxbuf)); + ret = tsl2563_read(chip->client, TSL2563_REG_INT, + &rxbuf, sizeof(rxbuf)); mutex_unlock(&chip->lock); if (ret < 0) goto error_ret; - len = snprintf(buf, PAGE_SIZE, "%d\n", !!(rxbuf & 0x30)); + ret = !!(rxbuf & 0x30); error_ret: - return (ret < 0) ? ret : len; + return ret; } -static IIO_DEVICE_ATTR(intensity0_both_thresh_en, - S_IRUGO | S_IWUSR, - tsl2563_read_interrupt_config, - tsl2563_write_interrupt_config, - 0); - -static struct attribute *tsl2563_event_attributes[] = { - &iio_dev_attr_intensity0_both_thresh_en.dev_attr.attr, - &iio_dev_attr_intensity0_both_raw_thresh_rising_value.dev_attr.attr, - &iio_dev_attr_intensity0_both_raw_thresh_falling_value.dev_attr.attr, - NULL, -}; - -static struct attribute_group tsl2563_event_attribute_group = { - .attrs = tsl2563_event_attributes, -}; /*--------------------------------------------------------------*/ /* Probe, Attach, Remove */ @@ -825,20 +733,23 @@ static int __devinit tsl2563_probe(struct i2c_client *client, chip->cover_comp_gain = 1; dev_info(&client->dev, "model %d, rev. %d\n", id >> 4, id & 0x0f); - - indio_dev->attrs = &tsl2563_group; + indio_dev->name = client->name; + indio_dev->channels = tsl2563_channels; + indio_dev->num_channels = ARRAY_SIZE(tsl2563_channels); + indio_dev->read_raw = &tsl2563_read_raw; + indio_dev->write_raw = &tsl2563_write_raw; + indio_dev->read_event_value = &tsl2563_read_thresh; + indio_dev->write_event_value = &tsl2563_write_thresh; + indio_dev->read_event_config = &tsl2563_read_interrupt_config; + indio_dev->write_event_config = &tsl2563_write_interrupt_config; indio_dev->dev.parent = &client->dev; indio_dev->driver_module = THIS_MODULE; indio_dev->modes = INDIO_DIRECT_MODE; - if (client->irq) { + if (client->irq) indio_dev->num_interrupt_lines = 1; - indio_dev->event_attrs - = &tsl2563_event_attribute_group; - } ret = iio_device_register(indio_dev); if (ret) goto fail1; - if (client->irq) { ret = request_threaded_irq(client->irq, NULL, -- 2.39.5