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iio: Added ST-sensors platform data to select the DRDY interrupt pin

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This patch add support to redirect the DRDY interrupt on INT1 or INT2
on accelerometer and pressure sensors.

Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Denis CIOCCA 2013-06-19 09:28:00 +01:00 committed by Jonathan Cameron
parent 36e607a16b
commit 23cde4d65c
19 changed files with 153 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/iio/accel/st_accel.h
View File

@ -25,7 +25,16 @@
#define LSM303DLM_ACCEL_DEV_NAME "lsm303dlm_accel"
#define LSM330_ACCEL_DEV_NAME "lsm330_accel"
int st_accel_common_probe(struct iio_dev *indio_dev);
/**
* struct st_sensors_platform_data - default accel platform data
* @drdy_int_pin: default accel DRDY is available on INT1 pin.
*/
static const struct st_sensors_platform_data default_accel_pdata = {
.drdy_int_pin = 1,
};
int st_accel_common_probe(struct iio_dev *indio_dev,
struct st_sensors_platform_data *pdata);
void st_accel_common_remove(struct iio_dev *indio_dev);
#ifdef CONFIG_IIO_BUFFER

27
drivers/iio/accel/st_accel_core.c
View File

@ -65,7 +65,8 @@
#define ST_ACCEL_1_BDU_ADDR 0x23
#define ST_ACCEL_1_BDU_MASK 0x80
#define ST_ACCEL_1_DRDY_IRQ_ADDR 0x22
#define ST_ACCEL_1_DRDY_IRQ_MASK 0x10
#define ST_ACCEL_1_DRDY_IRQ_INT1_MASK 0x10
#define ST_ACCEL_1_DRDY_IRQ_INT2_MASK 0x08
#define ST_ACCEL_1_MULTIREAD_BIT true
/* CUSTOM VALUES FOR SENSOR 2 */
@ -89,7 +90,8 @@
#define ST_ACCEL_2_BDU_ADDR 0x23
#define ST_ACCEL_2_BDU_MASK 0x80
#define ST_ACCEL_2_DRDY_IRQ_ADDR 0x22
#define ST_ACCEL_2_DRDY_IRQ_MASK 0x02
#define ST_ACCEL_2_DRDY_IRQ_INT1_MASK 0x02
#define ST_ACCEL_2_DRDY_IRQ_INT2_MASK 0x10
#define ST_ACCEL_2_MULTIREAD_BIT true
/* CUSTOM VALUES FOR SENSOR 3 */
@ -121,7 +123,8 @@
#define ST_ACCEL_3_BDU_ADDR 0x20
#define ST_ACCEL_3_BDU_MASK 0x08
#define ST_ACCEL_3_DRDY_IRQ_ADDR 0x23
#define ST_ACCEL_3_DRDY_IRQ_MASK 0x80
#define ST_ACCEL_3_DRDY_IRQ_INT1_MASK 0x80
#define ST_ACCEL_3_DRDY_IRQ_INT2_MASK 0x00
#define ST_ACCEL_3_IG1_EN_ADDR 0x23
#define ST_ACCEL_3_IG1_EN_MASK 0x08
#define ST_ACCEL_3_MULTIREAD_BIT false
@ -224,7 +227,8 @@ static const struct st_sensors st_accel_sensors[] = {
},
.drdy_irq = {
.addr = ST_ACCEL_1_DRDY_IRQ_ADDR,
.mask = ST_ACCEL_1_DRDY_IRQ_MASK,
.mask_int1 = ST_ACCEL_1_DRDY_IRQ_INT1_MASK,
.mask_int2 = ST_ACCEL_1_DRDY_IRQ_INT2_MASK,
},
.multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT,
.bootime = 2,
@ -285,7 +289,8 @@ static const struct st_sensors st_accel_sensors[] = {
},
.drdy_irq = {
.addr = ST_ACCEL_2_DRDY_IRQ_ADDR,
.mask = ST_ACCEL_2_DRDY_IRQ_MASK,
.mask_int1 = ST_ACCEL_2_DRDY_IRQ_INT1_MASK,
.mask_int2 = ST_ACCEL_2_DRDY_IRQ_INT2_MASK,
},
.multi_read_bit = ST_ACCEL_2_MULTIREAD_BIT,
.bootime = 2,
@ -358,7 +363,8 @@ static const struct st_sensors st_accel_sensors[] = {
},
.drdy_irq = {
.addr = ST_ACCEL_3_DRDY_IRQ_ADDR,
.mask = ST_ACCEL_3_DRDY_IRQ_MASK,
.mask_int1 = ST_ACCEL_3_DRDY_IRQ_INT1_MASK,
.mask_int2 = ST_ACCEL_3_DRDY_IRQ_INT2_MASK,
.ig1 = {
.en_addr = ST_ACCEL_3_IG1_EN_ADDR,
.en_mask = ST_ACCEL_3_IG1_EN_MASK,
@ -443,7 +449,8 @@ static const struct iio_trigger_ops st_accel_trigger_ops = {
#define ST_ACCEL_TRIGGER_OPS NULL
#endif
int st_accel_common_probe(struct iio_dev *indio_dev)
int st_accel_common_probe(struct iio_dev *indio_dev,
struct st_sensors_platform_data *plat_data)
{
int err;
struct st_sensor_data *adata = iio_priv(indio_dev);
@ -465,7 +472,11 @@ int st_accel_common_probe(struct iio_dev *indio_dev)
&adata->sensor->fs.fs_avl[0];
adata->odr = adata->sensor->odr.odr_avl[0].hz;
err = st_sensors_init_sensor(indio_dev);
if (!plat_data)
plat_data =
(struct st_sensors_platform_data *)&default_accel_pdata;
err = st_sensors_init_sensor(indio_dev, plat_data);
if (err < 0)
goto st_accel_common_probe_error;

2
drivers/iio/accel/st_accel_i2c.c
View File

@ -36,7 +36,7 @@ static int st_accel_i2c_probe(struct i2c_client *client,
st_sensors_i2c_configure(indio_dev, client, adata);
err = st_accel_common_probe(indio_dev);
err = st_accel_common_probe(indio_dev, client->dev.platform_data);
if (err < 0)
goto st_accel_common_probe_error;

2
drivers/iio/accel/st_accel_spi.c
View File

@ -35,7 +35,7 @@ static int st_accel_spi_probe(struct spi_device *spi)
st_sensors_spi_configure(indio_dev, spi, adata);
err = st_accel_common_probe(indio_dev);
err = st_accel_common_probe(indio_dev, spi->dev.platform_data);
if (err < 0)
goto st_accel_common_probe_error;

39
drivers/iio/common/st_sensors/st_sensors_core.c
View File

@ -22,7 +22,7 @@
static inline u32 st_sensors_get_unaligned_le24(const u8 *p)
{
return ((s32)((p[0] | p[1] << 8 | p[2] << 16) << 8) >> 8);
return (s32)((p[0] | p[1] << 8 | p[2] << 16) << 8) >> 8;
}
static int st_sensors_write_data_with_mask(struct iio_dev *indio_dev,
@ -198,13 +198,39 @@ int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable)
}
EXPORT_SYMBOL(st_sensors_set_axis_enable);
int st_sensors_init_sensor(struct iio_dev *indio_dev)
int st_sensors_init_sensor(struct iio_dev *indio_dev,
struct st_sensors_platform_data *pdata)
{
int err;
struct st_sensor_data *sdata = iio_priv(indio_dev);
mutex_init(&sdata->tb.buf_lock);
switch (pdata->drdy_int_pin) {
case 1:
if (sdata->sensor->drdy_irq.mask_int1 == 0) {
dev_err(&indio_dev->dev,
"DRDY on INT1 not available.\n");
err = -EINVAL;
goto init_error;
}
sdata->drdy_int_pin = 1;
break;
case 2:
if (sdata->sensor->drdy_irq.mask_int2 == 0) {
dev_err(&indio_dev->dev,
"DRDY on INT2 not available.\n");
err = -EINVAL;
goto init_error;
}
sdata->drdy_int_pin = 2;
break;
default:
dev_err(&indio_dev->dev, "DRDY on pdata not valid.\n");
err = -EINVAL;
goto init_error;
}
err = st_sensors_set_enable(indio_dev, false);
if (err < 0)
goto init_error;
@ -234,6 +260,7 @@ EXPORT_SYMBOL(st_sensors_init_sensor);
int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable)
{
int err;
u8 drdy_mask;
struct st_sensor_data *sdata = iio_priv(indio_dev);
/* Enable/Disable the interrupt generator 1. */
@ -245,10 +272,14 @@ int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable)
goto st_accel_set_dataready_irq_error;
}
if (sdata->drdy_int_pin == 1)
drdy_mask = sdata->sensor->drdy_irq.mask_int1;
else
drdy_mask = sdata->sensor->drdy_irq.mask_int2;
/* Enable/Disable the interrupt generator for data ready. */
err = st_sensors_write_data_with_mask(indio_dev,
sdata->sensor->drdy_irq.addr,
sdata->sensor->drdy_irq.mask, (int)enable);
sdata->sensor->drdy_irq.addr, drdy_mask, (int)enable);
st_accel_set_dataready_irq_error:
return err;

11
drivers/iio/gyro/st_gyro.h
View File

@ -23,7 +23,16 @@
#define L3G4IS_GYRO_DEV_NAME "l3g4is_ui"
#define LSM330_GYRO_DEV_NAME "lsm330_gyro"
int st_gyro_common_probe(struct iio_dev *indio_dev);
/**
* struct st_sensors_platform_data - gyro platform data
* @drdy_int_pin: DRDY on gyros is available only on INT2 pin.
*/
static const struct st_sensors_platform_data gyro_pdata = {
.drdy_int_pin = 2,
};
int st_gyro_common_probe(struct iio_dev *indio_dev,
struct st_sensors_platform_data *pdata);
void st_gyro_common_remove(struct iio_dev *indio_dev);
#ifdef CONFIG_IIO_BUFFER

13
drivers/iio/gyro/st_gyro_core.c
View File

@ -60,7 +60,7 @@
#define ST_GYRO_1_BDU_ADDR 0x23
#define ST_GYRO_1_BDU_MASK 0x80
#define ST_GYRO_1_DRDY_IRQ_ADDR 0x22
#define ST_GYRO_1_DRDY_IRQ_MASK 0x08
#define ST_GYRO_1_DRDY_IRQ_INT2_MASK 0x08
#define ST_GYRO_1_MULTIREAD_BIT true
/* CUSTOM VALUES FOR SENSOR 2 */
@ -84,7 +84,7 @@
#define ST_GYRO_2_BDU_ADDR 0x23
#define ST_GYRO_2_BDU_MASK 0x80
#define ST_GYRO_2_DRDY_IRQ_ADDR 0x22
#define ST_GYRO_2_DRDY_IRQ_MASK 0x08
#define ST_GYRO_2_DRDY_IRQ_INT2_MASK 0x08
#define ST_GYRO_2_MULTIREAD_BIT true
static const struct iio_chan_spec st_gyro_16bit_channels[] = {
@ -158,7 +158,7 @@ static const struct st_sensors st_gyro_sensors[] = {
},
.drdy_irq = {
.addr = ST_GYRO_1_DRDY_IRQ_ADDR,
.mask = ST_GYRO_1_DRDY_IRQ_MASK,
.mask_int2 = ST_GYRO_1_DRDY_IRQ_INT2_MASK,
},
.multi_read_bit = ST_GYRO_1_MULTIREAD_BIT,
.bootime = 2,
@ -221,7 +221,7 @@ static const struct st_sensors st_gyro_sensors[] = {
},
.drdy_irq = {
.addr = ST_GYRO_2_DRDY_IRQ_ADDR,
.mask = ST_GYRO_2_DRDY_IRQ_MASK,
.mask_int2 = ST_GYRO_2_DRDY_IRQ_INT2_MASK,
},
.multi_read_bit = ST_GYRO_2_MULTIREAD_BIT,
.bootime = 2,
@ -302,7 +302,8 @@ static const struct iio_trigger_ops st_gyro_trigger_ops = {
#define ST_GYRO_TRIGGER_OPS NULL
#endif
int st_gyro_common_probe(struct iio_dev *indio_dev)
int st_gyro_common_probe(struct iio_dev *indio_dev,
struct st_sensors_platform_data *pdata)
{
int err;
struct st_sensor_data *gdata = iio_priv(indio_dev);
@ -324,7 +325,7 @@ int st_gyro_common_probe(struct iio_dev *indio_dev)
&gdata->sensor->fs.fs_avl[0];
gdata->odr = gdata->sensor->odr.odr_avl[0].hz;
err = st_sensors_init_sensor(indio_dev);
err = st_sensors_init_sensor(indio_dev, pdata);
if (err < 0)
goto st_gyro_common_probe_error;

3
drivers/iio/gyro/st_gyro_i2c.c
View File

@ -36,7 +36,8 @@ static int st_gyro_i2c_probe(struct i2c_client *client,
st_sensors_i2c_configure(indio_dev, client, gdata);
err = st_gyro_common_probe(indio_dev);
err = st_gyro_common_probe(indio_dev,
(struct st_sensors_platform_data *)&gyro_pdata);
if (err < 0)
goto st_gyro_common_probe_error;

3
drivers/iio/gyro/st_gyro_spi.c
View File

@ -35,7 +35,8 @@ static int st_gyro_spi_probe(struct spi_device *spi)
st_sensors_spi_configure(indio_dev, spi, gdata);
err = st_gyro_common_probe(indio_dev);
err = st_gyro_common_probe(indio_dev,
(struct st_sensors_platform_data *)&gyro_pdata);
if (err < 0)
goto st_gyro_common_probe_error;

3
drivers/iio/magnetometer/st_magn.h
View File

@ -18,7 +18,8 @@
#define LSM303DLM_MAGN_DEV_NAME "lsm303dlm_magn"
#define LIS3MDL_MAGN_DEV_NAME "lis3mdl"
int st_magn_common_probe(struct iio_dev *indio_dev);
int st_magn_common_probe(struct iio_dev *indio_dev,
struct st_sensors_platform_data *pdata);
void st_magn_common_remove(struct iio_dev *indio_dev);
#ifdef CONFIG_IIO_BUFFER

5
drivers/iio/magnetometer/st_magn_core.c
View File

@ -345,7 +345,8 @@ static const struct iio_info magn_info = {
.write_raw = &st_magn_write_raw,
};
int st_magn_common_probe(struct iio_dev *indio_dev)
int st_magn_common_probe(struct iio_dev *indio_dev,
struct st_sensors_platform_data *pdata)
{
int err;
struct st_sensor_data *mdata = iio_priv(indio_dev);
@ -367,7 +368,7 @@ int st_magn_common_probe(struct iio_dev *indio_dev)
&mdata->sensor->fs.fs_avl[0];
mdata->odr = mdata->sensor->odr.odr_avl[0].hz;
err = st_sensors_init_sensor(indio_dev);
err = st_sensors_init_sensor(indio_dev, pdata);
if (err < 0)
goto st_magn_common_probe_error;

2
drivers/iio/magnetometer/st_magn_i2c.c
View File

@ -36,7 +36,7 @@ static int st_magn_i2c_probe(struct i2c_client *client,
st_sensors_i2c_configure(indio_dev, client, mdata);
err = st_magn_common_probe(indio_dev);
err = st_magn_common_probe(indio_dev, NULL);
if (err < 0)
goto st_magn_common_probe_error;

2
drivers/iio/magnetometer/st_magn_spi.c
View File

@ -35,7 +35,7 @@ static int st_magn_spi_probe(struct spi_device *spi)
st_sensors_spi_configure(indio_dev, spi, mdata);
err = st_magn_common_probe(indio_dev);
err = st_magn_common_probe(indio_dev, NULL);
if (err < 0)
goto st_magn_common_probe_error;

11
drivers/iio/pressure/st_pressure.h
View File

@ -16,7 +16,16 @@
#define LPS331AP_PRESS_DEV_NAME "lps331ap"
int st_press_common_probe(struct iio_dev *indio_dev);
/**
* struct st_sensors_platform_data - default press platform data
* @drdy_int_pin: default press DRDY is available on INT1 pin.
*/
static const struct st_sensors_platform_data default_press_pdata = {
.drdy_int_pin = 1,
};
int st_press_common_probe(struct iio_dev *indio_dev,
struct st_sensors_platform_data *pdata);
void st_press_common_remove(struct iio_dev *indio_dev);
#ifdef CONFIG_IIO_BUFFER

15
drivers/iio/pressure/st_pressure_core.c
View File

@ -58,7 +58,8 @@
#define ST_PRESS_1_BDU_ADDR 0x20
#define ST_PRESS_1_BDU_MASK 0x04
#define ST_PRESS_1_DRDY_IRQ_ADDR 0x22
#define ST_PRESS_1_DRDY_IRQ_MASK 0x04
#define ST_PRESS_1_DRDY_IRQ_INT1_MASK 0x04
#define ST_PRESS_1_DRDY_IRQ_INT2_MASK 0x20
#define ST_PRESS_1_MULTIREAD_BIT true
#define ST_PRESS_1_TEMP_OFFSET 42500
@ -116,7 +117,8 @@ static const struct st_sensors st_press_sensors[] = {
},
.drdy_irq = {
.addr = ST_PRESS_1_DRDY_IRQ_ADDR,
.mask = ST_PRESS_1_DRDY_IRQ_MASK,
.mask_int1 = ST_PRESS_1_DRDY_IRQ_INT1_MASK,
.mask_int2 = ST_PRESS_1_DRDY_IRQ_INT2_MASK,
},
.multi_read_bit = ST_PRESS_1_MULTIREAD_BIT,
.bootime = 2,
@ -202,7 +204,8 @@ static const struct iio_trigger_ops st_press_trigger_ops = {
#define ST_PRESS_TRIGGER_OPS NULL
#endif
int st_press_common_probe(struct iio_dev *indio_dev)
int st_press_common_probe(struct iio_dev *indio_dev,
struct st_sensors_platform_data *plat_data)
{
int err;
struct st_sensor_data *pdata = iio_priv(indio_dev);
@ -224,7 +227,11 @@ int st_press_common_probe(struct iio_dev *indio_dev)
&pdata->sensor->fs.fs_avl[0];
pdata->odr = pdata->sensor->odr.odr_avl[0].hz;
err = st_sensors_init_sensor(indio_dev);
if (!plat_data)
plat_data =
(struct st_sensors_platform_data *)&default_press_pdata;
err = st_sensors_init_sensor(indio_dev, plat_data);
if (err < 0)
goto st_press_common_probe_error;

2
drivers/iio/pressure/st_pressure_i2c.c
View File

@ -36,7 +36,7 @@ static int st_press_i2c_probe(struct i2c_client *client,
st_sensors_i2c_configure(indio_dev, client, pdata);
err = st_press_common_probe(indio_dev);
err = st_press_common_probe(indio_dev, client->dev.platform_data);
if (err < 0)
goto st_press_common_probe_error;

2
drivers/iio/pressure/st_pressure_spi.c
View File

@ -35,7 +35,7 @@ static int st_press_spi_probe(struct spi_device *spi)
st_sensors_spi_configure(indio_dev, spi, pdata);
err = st_press_common_probe(indio_dev);
err = st_press_common_probe(indio_dev, spi->dev.platform_data);
if (err < 0)
goto st_press_common_probe_error;

14
include/linux/iio/common/st_sensors.h
View File

@ -17,6 +17,8 @@
#include <linux/iio/trigger.h>
#include <linux/bitops.h>
#include <linux/platform_data/st_sensors_pdata.h>
#define ST_SENSORS_TX_MAX_LENGTH 2
#define ST_SENSORS_RX_MAX_LENGTH 6
@ -118,14 +120,16 @@ struct st_sensor_bdu {
/**
* struct st_sensor_data_ready_irq - ST sensor device data-ready interrupt
* @addr: address of the register.
* @mask: mask to write the on/off value.
* @mask_int1: mask to enable/disable IRQ on INT1 pin.
* @mask_int2: mask to enable/disable IRQ on INT2 pin.
* struct ig1 - represents the Interrupt Generator 1 of sensors.
* @en_addr: address of the enable ig1 register.
* @en_mask: mask to write the on/off value for enable.
*/
struct st_sensor_data_ready_irq {
u8 addr;
u8 mask;
u8 mask_int1;
u8 mask_int2;
struct {
u8 en_addr;
u8 en_mask;
@ -201,6 +205,7 @@ struct st_sensors {
* @buffer_data: Data used by buffer part.
* @odr: Output data rate of the sensor [Hz].
* num_data_channels: Number of data channels used in buffer.
* @drdy_int_pin: Redirect DRDY on pin 1 (1) or pin 2 (2).
* @get_irq_data_ready: Function to get the IRQ used for data ready signal.
* @tf: Transfer function structure used by I/O operations.
* @tb: Transfer buffers and mutex used by I/O operations.
@ -219,6 +224,8 @@ struct st_sensor_data {
unsigned int odr;
unsigned int num_data_channels;
u8 drdy_int_pin;
unsigned int (*get_irq_data_ready) (struct iio_dev *indio_dev);
const struct st_sensor_transfer_function *tf;
@ -249,7 +256,8 @@ static inline void st_sensors_deallocate_trigger(struct iio_dev *indio_dev)
}
#endif
int st_sensors_init_sensor(struct iio_dev *indio_dev);
int st_sensors_init_sensor(struct iio_dev *indio_dev,
struct st_sensors_platform_data *pdata);
int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable);

24
include/linux/platform_data/st_sensors_pdata.h Normal file
View File

@ -0,0 +1,24 @@
/*
* STMicroelectronics sensors platform-data driver
*
* Copyright 2013 STMicroelectronics Inc.
*
* Denis Ciocca <denis.ciocca@st.com>
*
* Licensed under the GPL-2.
*/
#ifndef ST_SENSORS_PDATA_H
#define ST_SENSORS_PDATA_H
/**
* struct st_sensors_platform_data - Platform data for the ST sensors
* @drdy_int_pin: Redirect DRDY on pin 1 (1) or pin 2 (2).
* Available only for accelerometer and pressure sensors.
* Accelerometer DRDY on LSM330 available only on pin 1 (see datasheet).
*/
struct st_sensors_platform_data {
u8 drdy_int_pin;
};
#endif /* ST_SENSORS_PDATA_H */