*
* 7-bit I2C slave address 0x23
*
- * TODO: interrupt, threshold, measurement rate, IR LED characteristics
+ * TODO: IR LED characteristics
*/
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/delay.h>
+#include <linux/regmap.h>
+#include <linux/acpi.h>
#include <linux/iio/iio.h>
+#include <linux/iio/events.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/buffer.h>
#define LTR501_ALS_CONTR 0x80 /* ALS operation mode, SW reset */
#define LTR501_PS_CONTR 0x81 /* PS operation mode */
+#define LTR501_PS_MEAS_RATE 0x84 /* measurement rate*/
+#define LTR501_ALS_MEAS_RATE 0x85 /* ALS integ time, measurement rate*/
#define LTR501_PART_ID 0x86
#define LTR501_MANUFAC_ID 0x87
#define LTR501_ALS_DATA1 0x88 /* 16-bit, little endian */
#define LTR501_ALS_DATA0 0x8a /* 16-bit, little endian */
#define LTR501_ALS_PS_STATUS 0x8c
#define LTR501_PS_DATA 0x8d /* 16-bit, little endian */
+#define LTR501_INTR 0x8f /* output mode, polarity, mode */
+#define LTR501_PS_THRESH_UP 0x90 /* 11 bit, ps upper threshold */
+#define LTR501_PS_THRESH_LOW 0x92 /* 11 bit, ps lower threshold */
+#define LTR501_ALS_THRESH_UP 0x97 /* 16 bit, ALS upper threshold */
+#define LTR501_ALS_THRESH_LOW 0x99 /* 16 bit, ALS lower threshold */
+#define LTR501_INTR_PRST 0x9e /* ps thresh, als thresh */
+#define LTR501_MAX_REG 0x9f
#define LTR501_ALS_CONTR_SW_RESET BIT(2)
#define LTR501_CONTR_PS_GAIN_MASK (BIT(3) | BIT(2))
#define LTR501_CONTR_ALS_GAIN_MASK BIT(3)
#define LTR501_CONTR_ACTIVE BIT(1)
+#define LTR501_STATUS_ALS_INTR BIT(3)
#define LTR501_STATUS_ALS_RDY BIT(2)
+#define LTR501_STATUS_PS_INTR BIT(1)
#define LTR501_STATUS_PS_RDY BIT(0)
#define LTR501_PS_DATA_MASK 0x7ff
+#define LTR501_PS_THRESH_MASK 0x7ff
+#define LTR501_ALS_THRESH_MASK 0xffff
+
+#define LTR501_ALS_DEF_PERIOD 500000
+#define LTR501_PS_DEF_PERIOD 100000
+
+#define LTR501_REGMAP_NAME "ltr501_regmap"
+
+#define LTR501_LUX_CONV(vis_coeff, vis_data, ir_coeff, ir_data) \
+ ((vis_coeff * vis_data) - (ir_coeff * ir_data))
+
+static const int int_time_mapping[] = {100000, 50000, 200000, 400000};
+
+static const struct reg_field reg_field_it =
+ REG_FIELD(LTR501_ALS_MEAS_RATE, 3, 4);
+static const struct reg_field reg_field_als_intr =
+ REG_FIELD(LTR501_INTR, 0, 0);
+static const struct reg_field reg_field_ps_intr =
+ REG_FIELD(LTR501_INTR, 1, 1);
+static const struct reg_field reg_field_als_rate =
+ REG_FIELD(LTR501_ALS_MEAS_RATE, 0, 2);
+static const struct reg_field reg_field_ps_rate =
+ REG_FIELD(LTR501_PS_MEAS_RATE, 0, 3);
+static const struct reg_field reg_field_als_prst =
+ REG_FIELD(LTR501_INTR_PRST, 0, 3);
+static const struct reg_field reg_field_ps_prst =
+ REG_FIELD(LTR501_INTR_PRST, 4, 7);
+
+struct ltr501_samp_table {
+ int freq_val; /* repetition frequency in micro HZ*/
+ int time_val; /* repetition rate in micro seconds */
+};
+
+#define LTR501_RESERVED_GAIN -1
+
+enum {
+ ltr501 = 0,
+ ltr559,
+ ltr301,
+};
+
+struct ltr501_gain {
+ int scale;
+ int uscale;
+};
+
+static struct ltr501_gain ltr501_als_gain_tbl[] = {
+ {1, 0},
+ {0, 5000},
+};
+
+static struct ltr501_gain ltr559_als_gain_tbl[] = {
+ {1, 0},
+ {0, 500000},
+ {0, 250000},
+ {0, 125000},
+ {LTR501_RESERVED_GAIN, LTR501_RESERVED_GAIN},
+ {LTR501_RESERVED_GAIN, LTR501_RESERVED_GAIN},
+ {0, 20000},
+ {0, 10000},
+};
+
+static struct ltr501_gain ltr501_ps_gain_tbl[] = {
+ {1, 0},
+ {0, 250000},
+ {0, 125000},
+ {0, 62500},
+};
+
+static struct ltr501_gain ltr559_ps_gain_tbl[] = {
+ {0, 62500}, /* x16 gain */
+ {0, 31250}, /* x32 gain */
+ {0, 15625}, /* bits X1 are for x64 gain */
+ {0, 15624},
+};
+
+struct ltr501_chip_info {
+ u8 partid;
+ struct ltr501_gain *als_gain;
+ int als_gain_tbl_size;
+ struct ltr501_gain *ps_gain;
+ int ps_gain_tbl_size;
+ u8 als_mode_active;
+ u8 als_gain_mask;
+ u8 als_gain_shift;
+ struct iio_chan_spec const *channels;
+ const int no_channels;
+ const struct iio_info *info;
+ const struct iio_info *info_no_irq;
+};
struct ltr501_data {
struct i2c_client *client;
struct mutex lock_als, lock_ps;
+ struct ltr501_chip_info *chip_info;
u8 als_contr, ps_contr;
+ int als_period, ps_period; /* period in micro seconds */
+ struct regmap *regmap;
+ struct regmap_field *reg_it;
+ struct regmap_field *reg_als_intr;
+ struct regmap_field *reg_ps_intr;
+ struct regmap_field *reg_als_rate;
+ struct regmap_field *reg_ps_rate;
+ struct regmap_field *reg_als_prst;
+ struct regmap_field *reg_ps_prst;
+};
+
+static const struct ltr501_samp_table ltr501_als_samp_table[] = {
+ {20000000, 50000}, {10000000, 100000},
+ {5000000, 200000}, {2000000, 500000},
+ {1000000, 1000000}, {500000, 2000000},
+ {500000, 2000000}, {500000, 2000000}
};
+static const struct ltr501_samp_table ltr501_ps_samp_table[] = {
+ {20000000, 50000}, {14285714, 70000},
+ {10000000, 100000}, {5000000, 200000},
+ {2000000, 500000}, {1000000, 1000000},
+ {500000, 2000000}, {500000, 2000000},
+ {500000, 2000000}
+};
+
+static int ltr501_match_samp_freq(const struct ltr501_samp_table *tab,
+ int len, int val, int val2)
+{
+ int i, freq;
+
+ freq = val * 1000000 + val2;
+
+ for (i = 0; i < len; i++) {
+ if (tab[i].freq_val == freq)
+ return i;
+ }
+
+ return -EINVAL;
+}
+
+static int ltr501_als_read_samp_freq(struct ltr501_data *data,
+ int *val, int *val2)
+{
+ int ret, i;
+
+ ret = regmap_field_read(data->reg_als_rate, &i);
+ if (ret < 0)
+ return ret;
+
+ if (i < 0 || i >= ARRAY_SIZE(ltr501_als_samp_table))
+ return -EINVAL;
+
+ *val = ltr501_als_samp_table[i].freq_val / 1000000;
+ *val2 = ltr501_als_samp_table[i].freq_val % 1000000;
+
+ return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int ltr501_ps_read_samp_freq(struct ltr501_data *data,
+ int *val, int *val2)
+{
+ int ret, i;
+
+ ret = regmap_field_read(data->reg_ps_rate, &i);
+ if (ret < 0)
+ return ret;
+
+ if (i < 0 || i >= ARRAY_SIZE(ltr501_ps_samp_table))
+ return -EINVAL;
+
+ *val = ltr501_ps_samp_table[i].freq_val / 1000000;
+ *val2 = ltr501_ps_samp_table[i].freq_val % 1000000;
+
+ return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int ltr501_als_write_samp_freq(struct ltr501_data *data,
+ int val, int val2)
+{
+ int i, ret;
+
+ i = ltr501_match_samp_freq(ltr501_als_samp_table,
+ ARRAY_SIZE(ltr501_als_samp_table),
+ val, val2);
+
+ if (i < 0)
+ return i;
+
+ mutex_lock(&data->lock_als);
+ ret = regmap_field_write(data->reg_als_rate, i);
+ mutex_unlock(&data->lock_als);
+
+ return ret;
+}
+
+static int ltr501_ps_write_samp_freq(struct ltr501_data *data,
+ int val, int val2)
+{
+ int i, ret;
+
+ i = ltr501_match_samp_freq(ltr501_ps_samp_table,
+ ARRAY_SIZE(ltr501_ps_samp_table),
+ val, val2);
+
+ if (i < 0)
+ return i;
+
+ mutex_lock(&data->lock_ps);
+ ret = regmap_field_write(data->reg_ps_rate, i);
+ mutex_unlock(&data->lock_ps);
+
+ return ret;
+}
+
+static int ltr501_als_read_samp_period(struct ltr501_data *data, int *val)
+{
+ int ret, i;
+
+ ret = regmap_field_read(data->reg_als_rate, &i);
+ if (ret < 0)
+ return ret;
+
+ if (i < 0 || i >= ARRAY_SIZE(ltr501_als_samp_table))
+ return -EINVAL;
+
+ *val = ltr501_als_samp_table[i].time_val;
+
+ return IIO_VAL_INT;
+}
+
+static int ltr501_ps_read_samp_period(struct ltr501_data *data, int *val)
+{
+ int ret, i;
+
+ ret = regmap_field_read(data->reg_ps_rate, &i);
+ if (ret < 0)
+ return ret;
+
+ if (i < 0 || i >= ARRAY_SIZE(ltr501_ps_samp_table))
+ return -EINVAL;
+
+ *val = ltr501_ps_samp_table[i].time_val;
+
+ return IIO_VAL_INT;
+}
+
+/* IR and visible spectrum coeff's are given in data sheet */
+static unsigned long ltr501_calculate_lux(u16 vis_data, u16 ir_data)
+{
+ unsigned long ratio, lux;
+
+ if (vis_data == 0)
+ return 0;
+
+ /* multiply numerator by 100 to avoid handling ratio < 1 */
+ ratio = DIV_ROUND_UP(ir_data * 100, ir_data + vis_data);
+
+ if (ratio < 45)
+ lux = LTR501_LUX_CONV(1774, vis_data, -1105, ir_data);
+ else if (ratio >= 45 && ratio < 64)
+ lux = LTR501_LUX_CONV(3772, vis_data, 1336, ir_data);
+ else if (ratio >= 64 && ratio < 85)
+ lux = LTR501_LUX_CONV(1690, vis_data, 169, ir_data);
+ else
+ lux = 0;
+
+ return lux / 1000;
+}
+
static int ltr501_drdy(struct ltr501_data *data, u8 drdy_mask)
{
int tries = 100;
- int ret;
+ int ret, status;
while (tries--) {
- ret = i2c_smbus_read_byte_data(data->client,
- LTR501_ALS_PS_STATUS);
+ ret = regmap_read(data->regmap, LTR501_ALS_PS_STATUS, &status);
if (ret < 0)
return ret;
- if ((ret & drdy_mask) == drdy_mask)
+ if ((status & drdy_mask) == drdy_mask)
return 0;
msleep(25);
}
return -EIO;
}
+static int ltr501_set_it_time(struct ltr501_data *data, int it)
+{
+ int ret, i, index = -1, status;
+
+ for (i = 0; i < ARRAY_SIZE(int_time_mapping); i++) {
+ if (int_time_mapping[i] == it) {
+ index = i;
+ break;
+ }
+ }
+ /* Make sure integ time index is valid */
+ if (index < 0)
+ return -EINVAL;
+
+ ret = regmap_read(data->regmap, LTR501_ALS_CONTR, &status);
+ if (ret < 0)
+ return ret;
+
+ if (status & LTR501_CONTR_ALS_GAIN_MASK) {
+ /*
+ * 200 ms and 400 ms integ time can only be
+ * used in dynamic range 1
+ */
+ if (index > 1)
+ return -EINVAL;
+ } else
+ /* 50 ms integ time can only be used in dynamic range 2 */
+ if (index == 1)
+ return -EINVAL;
+
+ return regmap_field_write(data->reg_it, index);
+}
+
+/* read int time in micro seconds */
+static int ltr501_read_it_time(struct ltr501_data *data, int *val, int *val2)
+{
+ int ret, index;
+
+ ret = regmap_field_read(data->reg_it, &index);
+ if (ret < 0)
+ return ret;
+
+ /* Make sure integ time index is valid */
+ if (index < 0 || index >= ARRAY_SIZE(int_time_mapping))
+ return -EINVAL;
+
+ *val2 = int_time_mapping[index];
+ *val = 0;
+
+ return IIO_VAL_INT_PLUS_MICRO;
+}
+
static int ltr501_read_als(struct ltr501_data *data, __le16 buf[2])
{
- int ret = ltr501_drdy(data, LTR501_STATUS_ALS_RDY);
+ int ret;
+
+ ret = ltr501_drdy(data, LTR501_STATUS_ALS_RDY);
if (ret < 0)
return ret;
/* always read both ALS channels in given order */
- return i2c_smbus_read_i2c_block_data(data->client,
- LTR501_ALS_DATA1, 2 * sizeof(__le16), (u8 *) buf);
+ return regmap_bulk_read(data->regmap, LTR501_ALS_DATA1,
+ buf, 2 * sizeof(__le16));
}
static int ltr501_read_ps(struct ltr501_data *data)
{
- int ret = ltr501_drdy(data, LTR501_STATUS_PS_RDY);
+ int ret, status;
+
+ ret = ltr501_drdy(data, LTR501_STATUS_PS_RDY);
if (ret < 0)
return ret;
- return i2c_smbus_read_word_data(data->client, LTR501_PS_DATA);
+
+ ret = regmap_bulk_read(data->regmap, LTR501_PS_DATA,
+ &status, 2);
+ if (ret < 0)
+ return ret;
+
+ return status;
+}
+
+static int ltr501_read_intr_prst(struct ltr501_data *data,
+ enum iio_chan_type type,
+ int *val2)
+{
+ int ret, samp_period, prst;
+
+ switch (type) {
+ case IIO_INTENSITY:
+ ret = regmap_field_read(data->reg_als_prst, &prst);
+ if (ret < 0)
+ return ret;
+
+ ret = ltr501_als_read_samp_period(data, &samp_period);
+
+ if (ret < 0)
+ return ret;
+ *val2 = samp_period * prst;
+ return IIO_VAL_INT_PLUS_MICRO;
+ case IIO_PROXIMITY:
+ ret = regmap_field_read(data->reg_ps_prst, &prst);
+ if (ret < 0)
+ return ret;
+
+ ret = ltr501_ps_read_samp_period(data, &samp_period);
+
+ if (ret < 0)
+ return ret;
+
+ *val2 = samp_period * prst;
+ return IIO_VAL_INT_PLUS_MICRO;
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
}
-#define LTR501_INTENSITY_CHANNEL(_idx, _addr, _mod, _shared) { \
+static int ltr501_write_intr_prst(struct ltr501_data *data,
+ enum iio_chan_type type,
+ int val, int val2)
+{
+ int ret, samp_period, new_val;
+ unsigned long period;
+
+ if (val < 0 || val2 < 0)
+ return -EINVAL;
+
+ /* period in microseconds */
+ period = ((val * 1000000) + val2);
+
+ switch (type) {
+ case IIO_INTENSITY:
+ ret = ltr501_als_read_samp_period(data, &samp_period);
+ if (ret < 0)
+ return ret;
+
+ /* period should be atleast equal to sampling period */
+ if (period < samp_period)
+ return -EINVAL;
+
+ new_val = DIV_ROUND_UP(period, samp_period);
+ if (new_val < 0 || new_val > 0x0f)
+ return -EINVAL;
+
+ mutex_lock(&data->lock_als);
+ ret = regmap_field_write(data->reg_als_prst, new_val);
+ mutex_unlock(&data->lock_als);
+ if (ret >= 0)
+ data->als_period = period;
+
+ return ret;
+ case IIO_PROXIMITY:
+ ret = ltr501_ps_read_samp_period(data, &samp_period);
+ if (ret < 0)
+ return ret;
+
+ /* period should be atleast equal to rate */
+ if (period < samp_period)
+ return -EINVAL;
+
+ new_val = DIV_ROUND_UP(period, samp_period);
+ if (new_val < 0 || new_val > 0x0f)
+ return -EINVAL;
+
+ mutex_lock(&data->lock_ps);
+ ret = regmap_field_write(data->reg_ps_prst, new_val);
+ mutex_unlock(&data->lock_ps);
+ if (ret >= 0)
+ data->ps_period = period;
+
+ return ret;
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
+}
+
+static const struct iio_event_spec ltr501_als_event_spec[] = {
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_RISING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE),
+ }, {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_FALLING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE),
+ }, {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_EITHER,
+ .mask_separate = BIT(IIO_EV_INFO_ENABLE) |
+ BIT(IIO_EV_INFO_PERIOD),
+ },
+
+};
+
+static const struct iio_event_spec ltr501_pxs_event_spec[] = {
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_RISING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE),
+ }, {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_FALLING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE),
+ }, {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_EITHER,
+ .mask_separate = BIT(IIO_EV_INFO_ENABLE) |
+ BIT(IIO_EV_INFO_PERIOD),
+ },
+};
+
+#define LTR501_INTENSITY_CHANNEL(_idx, _addr, _mod, _shared, \
+ _evspec, _evsize) { \
.type = IIO_INTENSITY, \
.modified = 1, \
.address = (_addr), \
.realbits = 16, \
.storagebits = 16, \
.endianness = IIO_CPU, \
- } \
+ }, \
+ .event_spec = _evspec,\
+ .num_event_specs = _evsize,\
+}
+
+#define LTR501_LIGHT_CHANNEL() { \
+ .type = IIO_LIGHT, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), \
+ .scan_index = -1, \
}
static const struct iio_chan_spec ltr501_channels[] = {
- LTR501_INTENSITY_CHANNEL(0, LTR501_ALS_DATA0, IIO_MOD_LIGHT_BOTH, 0),
+ LTR501_LIGHT_CHANNEL(),
+ LTR501_INTENSITY_CHANNEL(0, LTR501_ALS_DATA0, IIO_MOD_LIGHT_BOTH, 0,
+ ltr501_als_event_spec,
+ ARRAY_SIZE(ltr501_als_event_spec)),
LTR501_INTENSITY_CHANNEL(1, LTR501_ALS_DATA1, IIO_MOD_LIGHT_IR,
- BIT(IIO_CHAN_INFO_SCALE)),
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_SAMP_FREQ),
+ NULL, 0),
{
.type = IIO_PROXIMITY,
.address = LTR501_PS_DATA,
.storagebits = 16,
.endianness = IIO_CPU,
},
+ .event_spec = ltr501_pxs_event_spec,
+ .num_event_specs = ARRAY_SIZE(ltr501_pxs_event_spec),
},
IIO_CHAN_SOFT_TIMESTAMP(3),
};
-static const int ltr501_ps_gain[4][2] = {
- {1, 0}, {0, 250000}, {0, 125000}, {0, 62500}
+static const struct iio_chan_spec ltr301_channels[] = {
+ LTR501_LIGHT_CHANNEL(),
+ LTR501_INTENSITY_CHANNEL(0, LTR501_ALS_DATA0, IIO_MOD_LIGHT_BOTH, 0,
+ ltr501_als_event_spec,
+ ARRAY_SIZE(ltr501_als_event_spec)),
+ LTR501_INTENSITY_CHANNEL(1, LTR501_ALS_DATA1, IIO_MOD_LIGHT_IR,
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_SAMP_FREQ),
+ NULL, 0),
+ IIO_CHAN_SOFT_TIMESTAMP(2),
};
static int ltr501_read_raw(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- int *val, int *val2, long mask)
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
{
struct ltr501_data *data = iio_priv(indio_dev);
__le16 buf[2];
int ret, i;
switch (mask) {
+ case IIO_CHAN_INFO_PROCESSED:
+ if (iio_buffer_enabled(indio_dev))
+ return -EBUSY;
+
+ switch (chan->type) {
+ case IIO_LIGHT:
+ mutex_lock(&data->lock_als);
+ ret = ltr501_read_als(data, buf);
+ mutex_unlock(&data->lock_als);
+ if (ret < 0)
+ return ret;
+ *val = ltr501_calculate_lux(le16_to_cpu(buf[1]),
+ le16_to_cpu(buf[0]));
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
case IIO_CHAN_INFO_RAW:
if (iio_buffer_enabled(indio_dev))
return -EBUSY;
if (ret < 0)
return ret;
*val = le16_to_cpu(chan->address == LTR501_ALS_DATA1 ?
- buf[0] : buf[1]);
+ buf[0] : buf[1]);
return IIO_VAL_INT;
case IIO_PROXIMITY:
mutex_lock(&data->lock_ps);
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_INTENSITY:
- if (data->als_contr & LTR501_CONTR_ALS_GAIN_MASK) {
- *val = 0;
- *val2 = 5000;
- return IIO_VAL_INT_PLUS_MICRO;
- } else {
- *val = 1;
- *val2 = 0;
- return IIO_VAL_INT;
- }
+ i = (data->als_contr & data->chip_info->als_gain_mask)
+ >> data->chip_info->als_gain_shift;
+ *val = data->chip_info->als_gain[i].scale;
+ *val2 = data->chip_info->als_gain[i].uscale;
+ return IIO_VAL_INT_PLUS_MICRO;
case IIO_PROXIMITY:
i = (data->ps_contr & LTR501_CONTR_PS_GAIN_MASK) >>
LTR501_CONTR_PS_GAIN_SHIFT;
- *val = ltr501_ps_gain[i][0];
- *val2 = ltr501_ps_gain[i][1];
+ *val = data->chip_info->ps_gain[i].scale;
+ *val2 = data->chip_info->ps_gain[i].uscale;
return IIO_VAL_INT_PLUS_MICRO;
default:
return -EINVAL;
}
+ case IIO_CHAN_INFO_INT_TIME:
+ switch (chan->type) {
+ case IIO_INTENSITY:
+ return ltr501_read_it_time(data, val, val2);
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ switch (chan->type) {
+ case IIO_INTENSITY:
+ return ltr501_als_read_samp_freq(data, val, val2);
+ case IIO_PROXIMITY:
+ return ltr501_ps_read_samp_freq(data, val, val2);
+ default:
+ return -EINVAL;
+ }
}
return -EINVAL;
}
-static int ltr501_get_ps_gain_index(int val, int val2)
+static int ltr501_get_gain_index(struct ltr501_gain *gain, int size,
+ int val, int val2)
{
int i;
- for (i = 0; i < ARRAY_SIZE(ltr501_ps_gain); i++)
- if (val == ltr501_ps_gain[i][0] && val2 == ltr501_ps_gain[i][1])
+ for (i = 0; i < size; i++)
+ if (val == gain[i].scale && val2 == gain[i].uscale)
return i;
return -1;
}
static int ltr501_write_raw(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- int val, int val2, long mask)
+ struct iio_chan_spec const *chan,
+ int val, int val2, long mask)
{
struct ltr501_data *data = iio_priv(indio_dev);
- int i;
+ int i, ret, freq_val, freq_val2;
+ struct ltr501_chip_info *info = data->chip_info;
if (iio_buffer_enabled(indio_dev))
return -EBUSY;
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_INTENSITY:
- if (val == 0 && val2 == 5000)
- data->als_contr |= LTR501_CONTR_ALS_GAIN_MASK;
- else if (val == 1 && val2 == 0)
- data->als_contr &= ~LTR501_CONTR_ALS_GAIN_MASK;
- else
+ i = ltr501_get_gain_index(info->als_gain,
+ info->als_gain_tbl_size,
+ val, val2);
+ if (i < 0)
return -EINVAL;
- return i2c_smbus_write_byte_data(data->client,
- LTR501_ALS_CONTR, data->als_contr);
+
+ data->als_contr &= ~info->als_gain_mask;
+ data->als_contr |= i << info->als_gain_shift;
+
+ return regmap_write(data->regmap, LTR501_ALS_CONTR,
+ data->als_contr);
case IIO_PROXIMITY:
- i = ltr501_get_ps_gain_index(val, val2);
+ i = ltr501_get_gain_index(info->ps_gain,
+ info->ps_gain_tbl_size,
+ val, val2);
if (i < 0)
return -EINVAL;
data->ps_contr &= ~LTR501_CONTR_PS_GAIN_MASK;
data->ps_contr |= i << LTR501_CONTR_PS_GAIN_SHIFT;
- return i2c_smbus_write_byte_data(data->client,
- LTR501_PS_CONTR, data->ps_contr);
+
+ return regmap_write(data->regmap, LTR501_PS_CONTR,
+ data->ps_contr);
default:
return -EINVAL;
}
+ case IIO_CHAN_INFO_INT_TIME:
+ switch (chan->type) {
+ case IIO_INTENSITY:
+ if (val != 0)
+ return -EINVAL;
+ mutex_lock(&data->lock_als);
+ i = ltr501_set_it_time(data, val2);
+ mutex_unlock(&data->lock_als);
+ return i;
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ switch (chan->type) {
+ case IIO_INTENSITY:
+ ret = ltr501_als_read_samp_freq(data, &freq_val,
+ &freq_val2);
+ if (ret < 0)
+ return ret;
+
+ ret = ltr501_als_write_samp_freq(data, val, val2);
+ if (ret < 0)
+ return ret;
+
+ /* update persistence count when changing frequency */
+ ret = ltr501_write_intr_prst(data, chan->type,
+ 0, data->als_period);
+
+ if (ret < 0)
+ return ltr501_als_write_samp_freq(data,
+ freq_val,
+ freq_val2);
+ return ret;
+ case IIO_PROXIMITY:
+ ret = ltr501_ps_read_samp_freq(data, &freq_val,
+ &freq_val2);
+ if (ret < 0)
+ return ret;
+
+ ret = ltr501_ps_write_samp_freq(data, val, val2);
+ if (ret < 0)
+ return ret;
+
+ /* update persistence count when changing frequency */
+ ret = ltr501_write_intr_prst(data, chan->type,
+ 0, data->ps_period);
+
+ if (ret < 0)
+ return ltr501_ps_write_samp_freq(data,
+ freq_val,
+ freq_val2);
+ return ret;
+ default:
+ return -EINVAL;
+ }
+ }
+ return -EINVAL;
+}
+
+static int ltr501_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 ltr501_data *data = iio_priv(indio_dev);
+ int ret, thresh_data;
+
+ switch (chan->type) {
+ case IIO_INTENSITY:
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ ret = regmap_bulk_read(data->regmap,
+ LTR501_ALS_THRESH_UP,
+ &thresh_data, 2);
+ if (ret < 0)
+ return ret;
+ *val = thresh_data & LTR501_ALS_THRESH_MASK;
+ return IIO_VAL_INT;
+ case IIO_EV_DIR_FALLING:
+ ret = regmap_bulk_read(data->regmap,
+ LTR501_ALS_THRESH_LOW,
+ &thresh_data, 2);
+ if (ret < 0)
+ return ret;
+ *val = thresh_data & LTR501_ALS_THRESH_MASK;
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ case IIO_PROXIMITY:
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ ret = regmap_bulk_read(data->regmap,
+ LTR501_PS_THRESH_UP,
+ &thresh_data, 2);
+ if (ret < 0)
+ return ret;
+ *val = thresh_data & LTR501_PS_THRESH_MASK;
+ return IIO_VAL_INT;
+ case IIO_EV_DIR_FALLING:
+ ret = regmap_bulk_read(data->regmap,
+ LTR501_PS_THRESH_LOW,
+ &thresh_data, 2);
+ if (ret < 0)
+ return ret;
+ *val = thresh_data & LTR501_PS_THRESH_MASK;
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ default:
+ return -EINVAL;
}
+
return -EINVAL;
}
-static IIO_CONST_ATTR(in_proximity_scale_available, "1 0.25 0.125 0.0625");
-static IIO_CONST_ATTR(in_intensity_scale_available, "1 0.005");
+static int ltr501_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 ltr501_data *data = iio_priv(indio_dev);
+ int ret;
+
+ if (val < 0)
+ return -EINVAL;
+
+ switch (chan->type) {
+ case IIO_INTENSITY:
+ if (val > LTR501_ALS_THRESH_MASK)
+ return -EINVAL;
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ mutex_lock(&data->lock_als);
+ ret = regmap_bulk_write(data->regmap,
+ LTR501_ALS_THRESH_UP,
+ &val, 2);
+ mutex_unlock(&data->lock_als);
+ return ret;
+ case IIO_EV_DIR_FALLING:
+ mutex_lock(&data->lock_als);
+ ret = regmap_bulk_write(data->regmap,
+ LTR501_ALS_THRESH_LOW,
+ &val, 2);
+ mutex_unlock(&data->lock_als);
+ return ret;
+ default:
+ return -EINVAL;
+ }
+ case IIO_PROXIMITY:
+ if (val > LTR501_PS_THRESH_MASK)
+ return -EINVAL;
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ mutex_lock(&data->lock_ps);
+ ret = regmap_bulk_write(data->regmap,
+ LTR501_PS_THRESH_UP,
+ &val, 2);
+ mutex_unlock(&data->lock_ps);
+ return ret;
+ case IIO_EV_DIR_FALLING:
+ mutex_lock(&data->lock_ps);
+ ret = regmap_bulk_write(data->regmap,
+ LTR501_PS_THRESH_LOW,
+ &val, 2);
+ mutex_unlock(&data->lock_ps);
+ return ret;
+ default:
+ return -EINVAL;
+ }
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
+}
+
+static int ltr501_read_event(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)
+{
+ int ret;
+
+ switch (info) {
+ case IIO_EV_INFO_VALUE:
+ return ltr501_read_thresh(indio_dev, chan, type, dir,
+ info, val, val2);
+ case IIO_EV_INFO_PERIOD:
+ ret = ltr501_read_intr_prst(iio_priv(indio_dev),
+ chan->type, val2);
+ *val = *val2 / 1000000;
+ *val2 = *val2 % 1000000;
+ return ret;
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
+}
+
+static int ltr501_write_event(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)
+{
+ switch (info) {
+ case IIO_EV_INFO_VALUE:
+ if (val2 != 0)
+ return -EINVAL;
+ return ltr501_write_thresh(indio_dev, chan, type, dir,
+ info, val, val2);
+ case IIO_EV_INFO_PERIOD:
+ return ltr501_write_intr_prst(iio_priv(indio_dev), chan->type,
+ val, val2);
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
+}
+
+static int ltr501_read_event_config(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir)
+{
+ struct ltr501_data *data = iio_priv(indio_dev);
+ int ret, status;
+
+ switch (chan->type) {
+ case IIO_INTENSITY:
+ ret = regmap_field_read(data->reg_als_intr, &status);
+ if (ret < 0)
+ return ret;
+ return status;
+ case IIO_PROXIMITY:
+ ret = regmap_field_read(data->reg_ps_intr, &status);
+ if (ret < 0)
+ return ret;
+ return status;
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
+}
+
+static int ltr501_write_event_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 ltr501_data *data = iio_priv(indio_dev);
+ int ret;
+
+ /* only 1 and 0 are valid inputs */
+ if (state != 1 && state != 0)
+ return -EINVAL;
+
+ switch (chan->type) {
+ case IIO_INTENSITY:
+ mutex_lock(&data->lock_als);
+ ret = regmap_field_write(data->reg_als_intr, state);
+ mutex_unlock(&data->lock_als);
+ return ret;
+ case IIO_PROXIMITY:
+ mutex_lock(&data->lock_ps);
+ ret = regmap_field_write(data->reg_ps_intr, state);
+ mutex_unlock(&data->lock_ps);
+ return ret;
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
+}
+
+static ssize_t ltr501_show_proximity_scale_avail(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ltr501_data *data = iio_priv(dev_to_iio_dev(dev));
+ struct ltr501_chip_info *info = data->chip_info;
+ ssize_t len = 0;
+ int i;
+
+ for (i = 0; i < info->ps_gain_tbl_size; i++) {
+ if (info->ps_gain[i].scale == LTR501_RESERVED_GAIN)
+ continue;
+ len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06d ",
+ info->ps_gain[i].scale,
+ info->ps_gain[i].uscale);
+ }
+
+ buf[len - 1] = '\n';
+
+ return len;
+}
+
+static ssize_t ltr501_show_intensity_scale_avail(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ltr501_data *data = iio_priv(dev_to_iio_dev(dev));
+ struct ltr501_chip_info *info = data->chip_info;
+ ssize_t len = 0;
+ int i;
+
+ for (i = 0; i < info->als_gain_tbl_size; i++) {
+ if (info->als_gain[i].scale == LTR501_RESERVED_GAIN)
+ continue;
+ len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06d ",
+ info->als_gain[i].scale,
+ info->als_gain[i].uscale);
+ }
+
+ buf[len - 1] = '\n';
+
+ return len;
+}
+
+static IIO_CONST_ATTR_INT_TIME_AVAIL("0.05 0.1 0.2 0.4");
+static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("20 10 5 2 1 0.5");
+
+static IIO_DEVICE_ATTR(in_proximity_scale_available, S_IRUGO,
+ ltr501_show_proximity_scale_avail, NULL, 0);
+static IIO_DEVICE_ATTR(in_intensity_scale_available, S_IRUGO,
+ ltr501_show_intensity_scale_avail, NULL, 0);
static struct attribute *ltr501_attributes[] = {
- &iio_const_attr_in_proximity_scale_available.dev_attr.attr,
- &iio_const_attr_in_intensity_scale_available.dev_attr.attr,
+ &iio_dev_attr_in_proximity_scale_available.dev_attr.attr,
+ &iio_dev_attr_in_intensity_scale_available.dev_attr.attr,
+ &iio_const_attr_integration_time_available.dev_attr.attr,
+ &iio_const_attr_sampling_frequency_available.dev_attr.attr,
+ NULL
+};
+
+static struct attribute *ltr301_attributes[] = {
+ &iio_dev_attr_in_intensity_scale_available.dev_attr.attr,
+ &iio_const_attr_integration_time_available.dev_attr.attr,
+ &iio_const_attr_sampling_frequency_available.dev_attr.attr,
NULL
};
.attrs = ltr501_attributes,
};
+static const struct attribute_group ltr301_attribute_group = {
+ .attrs = ltr301_attributes,
+};
+
+static const struct iio_info ltr501_info_no_irq = {
+ .read_raw = ltr501_read_raw,
+ .write_raw = ltr501_write_raw,
+ .attrs = <r501_attribute_group,
+ .driver_module = THIS_MODULE,
+};
+
static const struct iio_info ltr501_info = {
.read_raw = ltr501_read_raw,
.write_raw = ltr501_write_raw,
.attrs = <r501_attribute_group,
+ .read_event_value = <r501_read_event,
+ .write_event_value = <r501_write_event,
+ .read_event_config = <r501_read_event_config,
+ .write_event_config = <r501_write_event_config,
+ .driver_module = THIS_MODULE,
+};
+
+static const struct iio_info ltr301_info_no_irq = {
+ .read_raw = ltr501_read_raw,
+ .write_raw = ltr501_write_raw,
+ .attrs = <r301_attribute_group,
.driver_module = THIS_MODULE,
};
-static int ltr501_write_contr(struct i2c_client *client, u8 als_val, u8 ps_val)
+static const struct iio_info ltr301_info = {
+ .read_raw = ltr501_read_raw,
+ .write_raw = ltr501_write_raw,
+ .attrs = <r301_attribute_group,
+ .read_event_value = <r501_read_event,
+ .write_event_value = <r501_write_event,
+ .read_event_config = <r501_read_event_config,
+ .write_event_config = <r501_write_event_config,
+ .driver_module = THIS_MODULE,
+};
+
+static struct ltr501_chip_info ltr501_chip_info_tbl[] = {
+ [ltr501] = {
+ .partid = 0x08,
+ .als_gain = ltr501_als_gain_tbl,
+ .als_gain_tbl_size = ARRAY_SIZE(ltr501_als_gain_tbl),
+ .ps_gain = ltr501_ps_gain_tbl,
+ .ps_gain_tbl_size = ARRAY_SIZE(ltr501_ps_gain_tbl),
+ .als_mode_active = BIT(0) | BIT(1),
+ .als_gain_mask = BIT(3),
+ .als_gain_shift = 3,
+ .info = <r501_info,
+ .info_no_irq = <r501_info_no_irq,
+ .channels = ltr501_channels,
+ .no_channels = ARRAY_SIZE(ltr501_channels),
+ },
+ [ltr559] = {
+ .partid = 0x09,
+ .als_gain = ltr559_als_gain_tbl,
+ .als_gain_tbl_size = ARRAY_SIZE(ltr559_als_gain_tbl),
+ .ps_gain = ltr559_ps_gain_tbl,
+ .ps_gain_tbl_size = ARRAY_SIZE(ltr559_ps_gain_tbl),
+ .als_mode_active = BIT(1),
+ .als_gain_mask = BIT(2) | BIT(3) | BIT(4),
+ .als_gain_shift = 2,
+ .info = <r501_info,
+ .info_no_irq = <r501_info_no_irq,
+ .channels = ltr501_channels,
+ .no_channels = ARRAY_SIZE(ltr501_channels),
+ },
+ [ltr301] = {
+ .partid = 0x08,
+ .als_gain = ltr501_als_gain_tbl,
+ .als_gain_tbl_size = ARRAY_SIZE(ltr501_als_gain_tbl),
+ .als_mode_active = BIT(0) | BIT(1),
+ .als_gain_mask = BIT(3),
+ .als_gain_shift = 3,
+ .info = <r301_info,
+ .info_no_irq = <r301_info_no_irq,
+ .channels = ltr301_channels,
+ .no_channels = ARRAY_SIZE(ltr301_channels),
+ },
+};
+
+static int ltr501_write_contr(struct ltr501_data *data, u8 als_val, u8 ps_val)
{
- int ret = i2c_smbus_write_byte_data(client, LTR501_ALS_CONTR, als_val);
+ int ret;
+
+ ret = regmap_write(data->regmap, LTR501_ALS_CONTR, als_val);
if (ret < 0)
return ret;
- return i2c_smbus_write_byte_data(client, LTR501_PS_CONTR, ps_val);
+ return regmap_write(data->regmap, LTR501_PS_CONTR, ps_val);
}
static irqreturn_t ltr501_trigger_handler(int irq, void *p)
__le16 als_buf[2];
u8 mask = 0;
int j = 0;
- int ret;
+ int ret, psdata;
memset(buf, 0, sizeof(buf));
/* figure out which data needs to be ready */
if (test_bit(0, indio_dev->active_scan_mask) ||
- test_bit(1, indio_dev->active_scan_mask))
+ test_bit(1, indio_dev->active_scan_mask))
mask |= LTR501_STATUS_ALS_RDY;
if (test_bit(2, indio_dev->active_scan_mask))
mask |= LTR501_STATUS_PS_RDY;
goto done;
if (mask & LTR501_STATUS_ALS_RDY) {
- ret = i2c_smbus_read_i2c_block_data(data->client,
- LTR501_ALS_DATA1, sizeof(als_buf), (u8 *) als_buf);
+ ret = regmap_bulk_read(data->regmap, LTR501_ALS_DATA1,
+ (u8 *)als_buf, sizeof(als_buf));
if (ret < 0)
return ret;
if (test_bit(0, indio_dev->active_scan_mask))
}
if (mask & LTR501_STATUS_PS_RDY) {
- ret = i2c_smbus_read_word_data(data->client, LTR501_PS_DATA);
+ ret = regmap_bulk_read(data->regmap, LTR501_PS_DATA,
+ &psdata, 2);
if (ret < 0)
goto done;
- buf[j++] = ret & LTR501_PS_DATA_MASK;
+ buf[j++] = psdata & LTR501_PS_DATA_MASK;
}
- iio_push_to_buffers_with_timestamp(indio_dev, buf,
- iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
done:
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
}
+static irqreturn_t ltr501_interrupt_handler(int irq, void *private)
+{
+ struct iio_dev *indio_dev = private;
+ struct ltr501_data *data = iio_priv(indio_dev);
+ int ret, status;
+
+ ret = regmap_read(data->regmap, LTR501_ALS_PS_STATUS, &status);
+ if (ret < 0) {
+ dev_err(&data->client->dev,
+ "irq read int reg failed\n");
+ return IRQ_HANDLED;
+ }
+
+ if (status & LTR501_STATUS_ALS_INTR)
+ iio_push_event(indio_dev,
+ IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_EITHER),
+ iio_get_time_ns());
+
+ if (status & LTR501_STATUS_PS_INTR)
+ iio_push_event(indio_dev,
+ IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_EITHER),
+ iio_get_time_ns());
+
+ return IRQ_HANDLED;
+}
+
static int ltr501_init(struct ltr501_data *data)
{
- int ret;
+ int ret, status;
- ret = i2c_smbus_read_byte_data(data->client, LTR501_ALS_CONTR);
+ ret = regmap_read(data->regmap, LTR501_ALS_CONTR, &status);
if (ret < 0)
return ret;
- data->als_contr = ret | LTR501_CONTR_ACTIVE;
- ret = i2c_smbus_read_byte_data(data->client, LTR501_PS_CONTR);
+ data->als_contr = status | data->chip_info->als_mode_active;
+
+ ret = regmap_read(data->regmap, LTR501_PS_CONTR, &status);
if (ret < 0)
return ret;
- data->ps_contr = ret | LTR501_CONTR_ACTIVE;
- return ltr501_write_contr(data->client, data->als_contr,
- data->ps_contr);
+ data->ps_contr = status | LTR501_CONTR_ACTIVE;
+
+ ret = ltr501_read_intr_prst(data, IIO_INTENSITY, &data->als_period);
+ if (ret < 0)
+ return ret;
+
+ ret = ltr501_read_intr_prst(data, IIO_PROXIMITY, &data->ps_period);
+ if (ret < 0)
+ return ret;
+
+ return ltr501_write_contr(data, data->als_contr, data->ps_contr);
+}
+
+static bool ltr501_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case LTR501_ALS_DATA1:
+ case LTR501_ALS_DATA0:
+ case LTR501_ALS_PS_STATUS:
+ case LTR501_PS_DATA:
+ return true;
+ default:
+ return false;
+ }
}
+static struct regmap_config ltr501_regmap_config = {
+ .name = LTR501_REGMAP_NAME,
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = LTR501_MAX_REG,
+ .cache_type = REGCACHE_RBTREE,
+ .volatile_reg = ltr501_is_volatile_reg,
+};
+
static int ltr501_powerdown(struct ltr501_data *data)
{
- return ltr501_write_contr(data->client,
- data->als_contr & ~LTR501_CONTR_ACTIVE,
+ return ltr501_write_contr(data, data->als_contr &
+ ~data->chip_info->als_mode_active,
data->ps_contr & ~LTR501_CONTR_ACTIVE);
}
+static const char *ltr501_match_acpi_device(struct device *dev, int *chip_idx)
+{
+ const struct acpi_device_id *id;
+
+ id = acpi_match_device(dev->driver->acpi_match_table, dev);
+ if (!id)
+ return NULL;
+ *chip_idx = id->driver_data;
+ return dev_name(dev);
+}
+
static int ltr501_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+ const struct i2c_device_id *id)
{
struct ltr501_data *data;
struct iio_dev *indio_dev;
- int ret;
+ struct regmap *regmap;
+ int ret, partid, chip_idx = 0;
+ const char *name = NULL;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
+ regmap = devm_regmap_init_i2c(client, <r501_regmap_config);
+ if (IS_ERR(regmap)) {
+ dev_err(&client->dev, "Regmap initialization failed.\n");
+ return PTR_ERR(regmap);
+ }
+
data = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
data->client = client;
+ data->regmap = regmap;
mutex_init(&data->lock_als);
mutex_init(&data->lock_ps);
- ret = i2c_smbus_read_byte_data(data->client, LTR501_PART_ID);
+ data->reg_it = devm_regmap_field_alloc(&client->dev, regmap,
+ reg_field_it);
+ if (IS_ERR(data->reg_it)) {
+ dev_err(&client->dev, "Integ time reg field init failed.\n");
+ return PTR_ERR(data->reg_it);
+ }
+
+ data->reg_als_intr = devm_regmap_field_alloc(&client->dev, regmap,
+ reg_field_als_intr);
+ if (IS_ERR(data->reg_als_intr)) {
+ dev_err(&client->dev, "ALS intr mode reg field init failed\n");
+ return PTR_ERR(data->reg_als_intr);
+ }
+
+ data->reg_ps_intr = devm_regmap_field_alloc(&client->dev, regmap,
+ reg_field_ps_intr);
+ if (IS_ERR(data->reg_ps_intr)) {
+ dev_err(&client->dev, "PS intr mode reg field init failed.\n");
+ return PTR_ERR(data->reg_ps_intr);
+ }
+
+ data->reg_als_rate = devm_regmap_field_alloc(&client->dev, regmap,
+ reg_field_als_rate);
+ if (IS_ERR(data->reg_als_rate)) {
+ dev_err(&client->dev, "ALS samp rate field init failed.\n");
+ return PTR_ERR(data->reg_als_rate);
+ }
+
+ data->reg_ps_rate = devm_regmap_field_alloc(&client->dev, regmap,
+ reg_field_ps_rate);
+ if (IS_ERR(data->reg_ps_rate)) {
+ dev_err(&client->dev, "PS samp rate field init failed.\n");
+ return PTR_ERR(data->reg_ps_rate);
+ }
+
+ data->reg_als_prst = devm_regmap_field_alloc(&client->dev, regmap,
+ reg_field_als_prst);
+ if (IS_ERR(data->reg_als_prst)) {
+ dev_err(&client->dev, "ALS prst reg field init failed\n");
+ return PTR_ERR(data->reg_als_prst);
+ }
+
+ data->reg_ps_prst = devm_regmap_field_alloc(&client->dev, regmap,
+ reg_field_ps_prst);
+ if (IS_ERR(data->reg_ps_prst)) {
+ dev_err(&client->dev, "PS prst reg field init failed.\n");
+ return PTR_ERR(data->reg_ps_prst);
+ }
+
+ ret = regmap_read(data->regmap, LTR501_PART_ID, &partid);
if (ret < 0)
return ret;
- if ((ret >> 4) != 0x8)
+
+ if (id) {
+ name = id->name;
+ chip_idx = id->driver_data;
+ } else if (ACPI_HANDLE(&client->dev)) {
+ name = ltr501_match_acpi_device(&client->dev, &chip_idx);
+ } else {
+ return -ENODEV;
+ }
+
+ data->chip_info = <r501_chip_info_tbl[chip_idx];
+
+ if ((partid >> 4) != data->chip_info->partid)
return -ENODEV;
indio_dev->dev.parent = &client->dev;
- indio_dev->info = <r501_info;
- indio_dev->channels = ltr501_channels;
- indio_dev->num_channels = ARRAY_SIZE(ltr501_channels);
- indio_dev->name = LTR501_DRV_NAME;
+ indio_dev->info = data->chip_info->info;
+ indio_dev->channels = data->chip_info->channels;
+ indio_dev->num_channels = data->chip_info->no_channels;
+ indio_dev->name = name;
indio_dev->modes = INDIO_DIRECT_MODE;
ret = ltr501_init(data);
if (ret < 0)
return ret;
+ if (client->irq > 0) {
+ ret = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, ltr501_interrupt_handler,
+ IRQF_TRIGGER_FALLING |
+ IRQF_ONESHOT,
+ "ltr501_thresh_event",
+ indio_dev);
+ if (ret) {
+ dev_err(&client->dev, "request irq (%d) failed\n",
+ client->irq);
+ return ret;
+ }
+ } else {
+ indio_dev->info = data->chip_info->info_no_irq;
+ }
+
ret = iio_triggered_buffer_setup(indio_dev, NULL,
- ltr501_trigger_handler, NULL);
+ ltr501_trigger_handler, NULL);
if (ret)
goto powerdown_on_error;
static int ltr501_suspend(struct device *dev)
{
struct ltr501_data *data = iio_priv(i2c_get_clientdata(
- to_i2c_client(dev)));
+ to_i2c_client(dev)));
return ltr501_powerdown(data);
}
static int ltr501_resume(struct device *dev)
{
struct ltr501_data *data = iio_priv(i2c_get_clientdata(
- to_i2c_client(dev)));
+ to_i2c_client(dev)));
- return ltr501_write_contr(data->client, data->als_contr,
+ return ltr501_write_contr(data, data->als_contr,
data->ps_contr);
}
#endif
static SIMPLE_DEV_PM_OPS(ltr501_pm_ops, ltr501_suspend, ltr501_resume);
+static const struct acpi_device_id ltr_acpi_match[] = {
+ {"LTER0501", ltr501},
+ {"LTER0559", ltr559},
+ {"LTER0301", ltr301},
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, ltr_acpi_match);
+
static const struct i2c_device_id ltr501_id[] = {
- { "ltr501", 0 },
+ { "ltr501", ltr501},
+ { "ltr559", ltr559},
+ { "ltr301", ltr301},
{ }
};
MODULE_DEVICE_TABLE(i2c, ltr501_id);
.driver = {
.name = LTR501_DRV_NAME,
.pm = <r501_pm_ops,
- .owner = THIS_MODULE,
+ .acpi_match_table = ACPI_PTR(ltr_acpi_match),
},
.probe = ltr501_probe,
.remove = ltr501_remove,
Code Review / kvmfornfv.git / blobdiff