Acked-by: Denis Ciocca <denis.ciocca@xxxxxx> -----Original Message----- From: linux-iio-owner@xxxxxxxxxxxxxxx <linux-iio-owner@xxxxxxxxxxxxxxx> On Behalf Of Mario Tesi Sent: Monday, January 14, 2019 9:24 AM To: jic23@xxxxxxxxxx Cc: linux-iio@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Mario TESI <mario.tesi@xxxxxx> Subject: [PATCH] iio:st_pressure:initial lps22hh sensor support From: mario tesi <mario.tesi@xxxxxx> Initial support for ST LPS22HH pressure sensor. Datasheet: http://www2.st.com/resource/en/datasheet/lps22hh.pdf Features: * pressure, temperature data and timestamping channels * sampling frequency selection [1..200] Hz * interrupt based trigger * over I2C or SPI interface Signed-off-by: mario tesi <mario.tesi@xxxxxx> --- drivers/iio/pressure/Kconfig | 2 +- drivers/iio/pressure/st_pressure.h | 2 + drivers/iio/pressure/st_pressure_core.c | 69 +++++++++++++++++++++++++++++++++ drivers/iio/pressure/st_pressure_i2c.c | 5 +++ drivers/iio/pressure/st_pressure_spi.c | 5 +++ 5 files changed, 82 insertions(+), 1 deletion(-) diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig index eaa7cfc..efeb89f 100644 --- a/drivers/iio/pressure/Kconfig +++ b/drivers/iio/pressure/Kconfig @@ -165,7 +165,7 @@ config IIO_ST_PRESS select IIO_TRIGGERED_BUFFER if (IIO_BUFFER) help Say yes here to build support for STMicroelectronics pressure - sensors: LPS001WP, LPS25H, LPS331AP, LPS22HB. + sensors: LPS001WP, LPS25H, LPS331AP, LPS22HB, LPS22HH. 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 e67eb0d..5794660 100644 --- a/drivers/iio/pressure/st_pressure.h +++ b/drivers/iio/pressure/st_pressure.h @@ -21,6 +21,7 @@ enum st_press_type { LPS22HB, LPS33HW, LPS35HW, + LPS22HH, ST_PRESS_MAX, }; @@ -30,6 +31,7 @@ enum st_press_type { #define LPS22HB_PRESS_DEV_NAME "lps22hb" #define LPS33HW_PRESS_DEV_NAME "lps33hw" #define LPS35HW_PRESS_DEV_NAME "lps35hw" +#define LPS22HH_PRESS_DEV_NAME "lps22hh" /** * struct st_sensors_platform_data - default press platform data diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c index 4ddb6cf..38dcdb7 100644 --- a/drivers/iio/pressure/st_pressure_core.c +++ b/drivers/iio/pressure/st_pressure_core.c @@ -492,6 +492,75 @@ .multi_read_bit = false, .bootime = 2, }, + { + /* + * CUSTOM VALUES FOR LPS22HH SENSOR + * See LPS22HH datasheet: + * http://www2.st.com/resource/en/datasheet/lps22hh.pdf + */ + .wai = 0xb3, + .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, + .sensors_supported = { + [0] = LPS22HH_PRESS_DEV_NAME, + }, + .ch = (struct iio_chan_spec *)st_press_lps22hb_channels, + .num_ch = ARRAY_SIZE(st_press_lps22hb_channels), + .odr = { + .addr = 0x10, + .mask = 0x70, + .odr_avl = { + { .hz = 1, .value = 0x01 }, + { .hz = 10, .value = 0x02 }, + { .hz = 25, .value = 0x03 }, + { .hz = 50, .value = 0x04 }, + { .hz = 75, .value = 0x05 }, + { .hz = 100, .value = 0x06 }, + { .hz = 200, .value = 0x07 }, + }, + }, + .pw = { + .addr = 0x10, + .mask = 0x70, + .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, + }, + .fs = { + .fs_avl = { + /* + * Pressure and temperature sensitivity values + * as defined in table 3 of LPS22HH datasheet. + */ + [0] = { + .num = ST_PRESS_FS_AVL_1260MB, + .gain = ST_PRESS_KPASCAL_NANO_SCALE, + .gain2 = ST_PRESS_LPS22HB_LSB_PER_CELSIUS, + }, + }, + }, + .bdu = { + .addr = 0x10, + .mask = BIT(1), + }, + .drdy_irq = { + .int1 = { + .addr = 0x12, + .mask = BIT(2), + .addr_od = 0x11, + .mask_od = BIT(5), + }, + .addr_ihl = 0x11, + .mask_ihl = BIT(6), + .stat_drdy = { + .addr = ST_SENSORS_DEFAULT_STAT_ADDR, + .mask = 0x03, + }, + }, + .sim = { + .addr = 0x10, + .value = BIT(0), + }, + .multi_read_bit = false, + .bootime = 2, + }, }; static int st_press_write_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 2026a10..a60849d 100644 --- a/drivers/iio/pressure/st_pressure_i2c.c +++ b/drivers/iio/pressure/st_pressure_i2c.c @@ -45,6 +45,10 @@ .compatible = "st,lps35hw", .data = LPS35HW_PRESS_DEV_NAME, }, + { + .compatible = "st,lps22hh", + .data = LPS22HH_PRESS_DEV_NAME, + }, {}, }; MODULE_DEVICE_TABLE(of, st_press_of_match); @@ -69,6 +73,7 @@ { LPS22HB_PRESS_DEV_NAME, LPS22HB }, { LPS33HW_PRESS_DEV_NAME, LPS33HW }, { LPS35HW_PRESS_DEV_NAME, LPS35HW }, + { LPS22HH_PRESS_DEV_NAME, LPS22HH }, {}, }; MODULE_DEVICE_TABLE(i2c, st_press_id_table); diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c index 9a3441b..79a12ed 100644 --- a/drivers/iio/pressure/st_pressure_spi.c +++ b/drivers/iio/pressure/st_pressure_spi.c @@ -49,6 +49,10 @@ .compatible = "st,lps35hw", .data = LPS35HW_PRESS_DEV_NAME, }, + { + .compatible = "st,lps22hh", + .data = LPS22HH_PRESS_DEV_NAME, + }, {}, }; MODULE_DEVICE_TABLE(of, st_press_of_match); @@ -93,6 +97,7 @@ static int st_press_spi_remove(struct spi_device *spi) { LPS22HB_PRESS_DEV_NAME }, { LPS33HW_PRESS_DEV_NAME }, { LPS35HW_PRESS_DEV_NAME }, + { LPS22HH_PRESS_DEV_NAME }, {}, }; MODULE_DEVICE_TABLE(spi, st_press_id_table); -- 1.9.1
