iio:pressure: Add support for LPS25H pressure sensor

This patch adds support for the new barometer sensor: LPS25H.

Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

5 files changed, 84 insertions, 8 deletions

diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig
index 6215761b3c53..d88ff17fedb2 100644
--- a/drivers/iio/pressure/Kconfig
+++ b/drivers/iio/pressure/Kconfig
@@ -40,7 +40,7 @@ config IIO_ST_PRESS
         select IIO_TRIGGERED_BUFFER if (IIO_BUFFER)
         help
           Say yes here to build support for STMicroelectronics pressure
-          sensors: LPS001WP, LPS331AP.
+          sensors: LPS001WP, LPS25H, LPS331AP.
 
           This driver can also be built as a module. If so, these modules
           will be created:
diff --git a/drivers/iio/pressure/st_pressure.h b/drivers/iio/pressure/st_pressure.h
index 049c21acf1f0..242943c0c4e4 100644
--- a/drivers/iio/pressure/st_pressure.h
+++ b/drivers/iio/pressure/st_pressure.h
@@ -15,6 +15,7 @@
 #include <linux/iio/common/st_sensors.h>
 
 #define LPS001WP_PRESS_DEV_NAME         "lps001wp"
+#define LPS25H_PRESS_DEV_NAME           "lps25h"
 #define LPS331AP_PRESS_DEV_NAME         "lps331ap"
 
 /**
diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
index 58083f9d51c5..7418768ed49c 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -40,6 +40,9 @@
 /* FULLSCALE */
 #define ST_PRESS_FS_AVL_1260MB                  1260
 
+#define ST_PRESS_1_OUT_XL_ADDR                  0x28
+#define ST_TEMP_1_OUT_L_ADDR                    0x2b
+
 /* CUSTOM VALUES FOR LPS331AP SENSOR */
 #define ST_PRESS_LPS331AP_WAI_EXP               0xbb
 #define ST_PRESS_LPS331AP_ODR_ADDR              0x20
@@ -62,8 +65,6 @@
 #define ST_PRESS_LPS331AP_DRDY_IRQ_INT2_MASK    0x20
 #define ST_PRESS_LPS331AP_MULTIREAD_BIT         true
 #define ST_PRESS_LPS331AP_TEMP_OFFSET           42500
-#define ST_PRESS_LPS331AP_OUT_XL_ADDR           0x28
-#define ST_TEMP_LPS331AP_OUT_L_ADDR             0x2b
 
 /* CUSTOM VALUES FOR LPS001WP SENSOR */
 #define ST_PRESS_LPS001WP_WAI_EXP               0xba
@@ -80,11 +81,36 @@
 #define ST_PRESS_LPS001WP_OUT_L_ADDR            0x28
 #define ST_TEMP_LPS001WP_OUT_L_ADDR             0x2a
 
-static const struct iio_chan_spec st_press_lps331ap_channels[] = {
+/* CUSTOM VALUES FOR LPS25H SENSOR */
+#define ST_PRESS_LPS25H_WAI_EXP                 0xbd
+#define ST_PRESS_LPS25H_ODR_ADDR                0x20
+#define ST_PRESS_LPS25H_ODR_MASK                0x70
+#define ST_PRESS_LPS25H_ODR_AVL_1HZ_VAL         0x01
+#define ST_PRESS_LPS25H_ODR_AVL_7HZ_VAL         0x02
+#define ST_PRESS_LPS25H_ODR_AVL_13HZ_VAL        0x03
+#define ST_PRESS_LPS25H_ODR_AVL_25HZ_VAL        0x04
+#define ST_PRESS_LPS25H_PW_ADDR                 0x20
+#define ST_PRESS_LPS25H_PW_MASK                 0x80
+#define ST_PRESS_LPS25H_FS_ADDR                 0x00
+#define ST_PRESS_LPS25H_FS_MASK                 0x00
+#define ST_PRESS_LPS25H_FS_AVL_1260_VAL         0x00
+#define ST_PRESS_LPS25H_FS_AVL_1260_GAIN        ST_PRESS_KPASCAL_NANO_SCALE
+#define ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN        ST_PRESS_CELSIUS_NANO_SCALE
+#define ST_PRESS_LPS25H_BDU_ADDR                0x20
+#define ST_PRESS_LPS25H_BDU_MASK                0x04
+#define ST_PRESS_LPS25H_DRDY_IRQ_ADDR           0x23
+#define ST_PRESS_LPS25H_DRDY_IRQ_INT1_MASK      0x01
+#define ST_PRESS_LPS25H_DRDY_IRQ_INT2_MASK      0x10
+#define ST_PRESS_LPS25H_MULTIREAD_BIT           true
+#define ST_PRESS_LPS25H_TEMP_OFFSET             42500
+#define ST_PRESS_LPS25H_OUT_XL_ADDR             0x28
+#define ST_TEMP_LPS25H_OUT_L_ADDR               0x2b
+
+static const struct iio_chan_spec st_press_1_channels[] = {
         {
                 .type = IIO_PRESSURE,
                 .channel2 = IIO_NO_MOD,
-                .address = ST_PRESS_LPS331AP_OUT_XL_ADDR,
+                .address = ST_PRESS_1_OUT_XL_ADDR,
                 .scan_index = ST_SENSORS_SCAN_X,
                 .scan_type = {
                         .sign = 'u',
@@ -99,7 +125,7 @@ static const struct iio_chan_spec st_press_lps331ap_channels[] = {
         {
                 .type = IIO_TEMP,
                 .channel2 = IIO_NO_MOD,
-                .address = ST_TEMP_LPS331AP_OUT_L_ADDR,
+                .address = ST_TEMP_1_OUT_L_ADDR,
                 .scan_index = -1,
                 .scan_type = {
                         .sign = 'u',
@@ -156,8 +182,8 @@ static const struct st_sensors st_press_sensors[] = {
                 .sensors_supported = {
                         [0] = LPS331AP_PRESS_DEV_NAME,
                 },
-                .ch = (struct iio_chan_spec *)st_press_lps331ap_channels,
-                .num_ch = ARRAY_SIZE(st_press_lps331ap_channels),
+                .ch = (struct iio_chan_spec *)st_press_1_channels,
+                .num_ch = ARRAY_SIZE(st_press_1_channels),
                 .odr = {
                         .addr = ST_PRESS_LPS331AP_ODR_ADDR,
                         .mask = ST_PRESS_LPS331AP_ODR_MASK,
@@ -233,6 +259,53 @@ static const struct st_sensors st_press_sensors[] = {
                 .multi_read_bit = ST_PRESS_LPS001WP_MULTIREAD_BIT,
                 .bootime = 2,
         },
+        {
+                .wai = ST_PRESS_LPS25H_WAI_EXP,
+                .sensors_supported = {
+                        [0] = LPS25H_PRESS_DEV_NAME,
+                },
+                .ch = (struct iio_chan_spec *)st_press_1_channels,
+                .num_ch = ARRAY_SIZE(st_press_1_channels),
+                .odr = {
+                        .addr = ST_PRESS_LPS25H_ODR_ADDR,
+                        .mask = ST_PRESS_LPS25H_ODR_MASK,
+                        .odr_avl = {
+                                { 1, ST_PRESS_LPS25H_ODR_AVL_1HZ_VAL, },
+                                { 7, ST_PRESS_LPS25H_ODR_AVL_7HZ_VAL, },
+                                { 13, ST_PRESS_LPS25H_ODR_AVL_13HZ_VAL, },
+                                { 25, ST_PRESS_LPS25H_ODR_AVL_25HZ_VAL, },
+                        },
+                },
+                .pw = {
+                        .addr = ST_PRESS_LPS25H_PW_ADDR,
+                        .mask = ST_PRESS_LPS25H_PW_MASK,
+                        .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
+                        .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+                },
+                .fs = {
+                        .addr = ST_PRESS_LPS25H_FS_ADDR,
+                        .mask = ST_PRESS_LPS25H_FS_MASK,
+                        .fs_avl = {
+                                [0] = {
+                                        .num = ST_PRESS_FS_AVL_1260MB,
+                                        .value = ST_PRESS_LPS25H_FS_AVL_1260_VAL,
+                                        .gain = ST_PRESS_LPS25H_FS_AVL_1260_GAIN,
+                                        .gain2 = ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN,
+                                },
+                        },
+                },
+                .bdu = {
+                        .addr = ST_PRESS_LPS25H_BDU_ADDR,
+                        .mask = ST_PRESS_LPS25H_BDU_MASK,
+                },
+                .drdy_irq = {
+                        .addr = ST_PRESS_LPS25H_DRDY_IRQ_ADDR,
+                        .mask_int1 = ST_PRESS_LPS25H_DRDY_IRQ_INT1_MASK,
+                        .mask_int2 = ST_PRESS_LPS25H_DRDY_IRQ_INT2_MASK,
+                },
+                .multi_read_bit = ST_PRESS_LPS25H_MULTIREAD_BIT,
+                .bootime = 2,
+        },
 };
 
 static int st_press_read_raw(struct iio_dev *indio_dev,
diff --git a/drivers/iio/pressure/st_pressure_i2c.c b/drivers/iio/pressure/st_pressure_i2c.c
index 51eab7fcb194..3cd73e39b840 100644
--- a/drivers/iio/pressure/st_pressure_i2c.c
+++ b/drivers/iio/pressure/st_pressure_i2c.c
@@ -50,6 +50,7 @@ static int st_press_i2c_remove(struct i2c_client *client)
 
 static const struct i2c_device_id st_press_id_table[] = {
         { LPS001WP_PRESS_DEV_NAME },
+        { LPS25H_PRESS_DEV_NAME },
         { LPS331AP_PRESS_DEV_NAME },
         {},
 };
diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c
index 27322af6d665..f45d430ec529 100644
--- a/drivers/iio/pressure/st_pressure_spi.c
+++ b/drivers/iio/pressure/st_pressure_spi.c
@@ -49,6 +49,7 @@ static int st_press_spi_remove(struct spi_device *spi)
 
 static const struct spi_device_id st_press_id_table[] = {
         { LPS001WP_PRESS_DEV_NAME },
+        { LPS25H_PRESS_DEV_NAME },
         { LPS331AP_PRESS_DEV_NAME },
         {},
 };