diff options
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/accel/bmc150-accel-core.c | 71 |
1 files changed, 59 insertions, 12 deletions
diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c index 5ce384ebe6c7..8d3dd3c2bcc2 100644 --- a/drivers/iio/accel/bmc150-accel-core.c +++ b/drivers/iio/accel/bmc150-accel-core.c @@ -10,6 +10,7 @@ #include <linux/delay.h> #include <linux/slab.h> #include <linux/acpi.h> +#include <linux/of_irq.h> #include <linux/pm.h> #include <linux/pm_runtime.h> #include <linux/iio/iio.h> @@ -57,12 +58,18 @@ #define BMC150_ACCEL_RESET_VAL 0xB6 #define BMC150_ACCEL_REG_INT_MAP_0 0x19 -#define BMC150_ACCEL_INT_MAP_0_BIT_SLOPE BIT(2) +#define BMC150_ACCEL_INT_MAP_0_BIT_INT1_SLOPE BIT(2) #define BMC150_ACCEL_REG_INT_MAP_1 0x1A -#define BMC150_ACCEL_INT_MAP_1_BIT_DATA BIT(0) -#define BMC150_ACCEL_INT_MAP_1_BIT_FWM BIT(1) -#define BMC150_ACCEL_INT_MAP_1_BIT_FFULL BIT(2) +#define BMC150_ACCEL_INT_MAP_1_BIT_INT1_DATA BIT(0) +#define BMC150_ACCEL_INT_MAP_1_BIT_INT1_FWM BIT(1) +#define BMC150_ACCEL_INT_MAP_1_BIT_INT1_FFULL BIT(2) +#define BMC150_ACCEL_INT_MAP_1_BIT_INT2_FFULL BIT(5) +#define BMC150_ACCEL_INT_MAP_1_BIT_INT2_FWM BIT(6) +#define BMC150_ACCEL_INT_MAP_1_BIT_INT2_DATA BIT(7) + +#define BMC150_ACCEL_REG_INT_MAP_2 0x1B +#define BMC150_ACCEL_INT_MAP_2_BIT_INT2_SLOPE BIT(2) #define BMC150_ACCEL_REG_INT_RST_LATCH 0x21 #define BMC150_ACCEL_INT_MODE_LATCH_RESET 0x80 @@ -81,6 +88,7 @@ #define BMC150_ACCEL_REG_INT_OUT_CTRL 0x20 #define BMC150_ACCEL_INT_OUT_CTRL_INT1_LVL BIT(0) +#define BMC150_ACCEL_INT_OUT_CTRL_INT2_LVL BIT(2) #define BMC150_ACCEL_REG_INT_5 0x27 #define BMC150_ACCEL_SLOPE_DUR_MASK 0x03 @@ -476,21 +484,24 @@ static bool bmc150_apply_acpi_orientation(struct device *dev, } #endif -static const struct bmc150_accel_interrupt_info { +struct bmc150_accel_interrupt_info { u8 map_reg; u8 map_bitmask; u8 en_reg; u8 en_bitmask; -} bmc150_accel_interrupts[BMC150_ACCEL_INTERRUPTS] = { +}; + +static const struct bmc150_accel_interrupt_info +bmc150_accel_interrupts_int1[BMC150_ACCEL_INTERRUPTS] = { { /* data ready interrupt */ .map_reg = BMC150_ACCEL_REG_INT_MAP_1, - .map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_DATA, + .map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_INT1_DATA, .en_reg = BMC150_ACCEL_REG_INT_EN_1, .en_bitmask = BMC150_ACCEL_INT_EN_BIT_DATA_EN, }, { /* motion interrupt */ .map_reg = BMC150_ACCEL_REG_INT_MAP_0, - .map_bitmask = BMC150_ACCEL_INT_MAP_0_BIT_SLOPE, + .map_bitmask = BMC150_ACCEL_INT_MAP_0_BIT_INT1_SLOPE, .en_reg = BMC150_ACCEL_REG_INT_EN_0, .en_bitmask = BMC150_ACCEL_INT_EN_BIT_SLP_X | BMC150_ACCEL_INT_EN_BIT_SLP_Y | @@ -498,19 +509,55 @@ static const struct bmc150_accel_interrupt_info { }, { /* fifo watermark interrupt */ .map_reg = BMC150_ACCEL_REG_INT_MAP_1, - .map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_FWM, + .map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_INT1_FWM, + .en_reg = BMC150_ACCEL_REG_INT_EN_1, + .en_bitmask = BMC150_ACCEL_INT_EN_BIT_FWM_EN, + }, +}; + +static const struct bmc150_accel_interrupt_info +bmc150_accel_interrupts_int2[BMC150_ACCEL_INTERRUPTS] = { + { /* data ready interrupt */ + .map_reg = BMC150_ACCEL_REG_INT_MAP_1, + .map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_INT2_DATA, + .en_reg = BMC150_ACCEL_REG_INT_EN_1, + .en_bitmask = BMC150_ACCEL_INT_EN_BIT_DATA_EN, + }, + { /* motion interrupt */ + .map_reg = BMC150_ACCEL_REG_INT_MAP_2, + .map_bitmask = BMC150_ACCEL_INT_MAP_2_BIT_INT2_SLOPE, + .en_reg = BMC150_ACCEL_REG_INT_EN_0, + .en_bitmask = BMC150_ACCEL_INT_EN_BIT_SLP_X | + BMC150_ACCEL_INT_EN_BIT_SLP_Y | + BMC150_ACCEL_INT_EN_BIT_SLP_Z + }, + { /* fifo watermark interrupt */ + .map_reg = BMC150_ACCEL_REG_INT_MAP_1, + .map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_INT2_FWM, .en_reg = BMC150_ACCEL_REG_INT_EN_1, .en_bitmask = BMC150_ACCEL_INT_EN_BIT_FWM_EN, }, }; static void bmc150_accel_interrupts_setup(struct iio_dev *indio_dev, - struct bmc150_accel_data *data) + struct bmc150_accel_data *data, int irq) { + const struct bmc150_accel_interrupt_info *irq_info = NULL; + struct device *dev = regmap_get_device(data->regmap); int i; + /* + * For now we map all interrupts to the same output pin. + * However, some boards may have just INT2 (and not INT1) connected, + * so we try to detect which IRQ it is based on the interrupt-names. + * Without interrupt-names, we assume the irq belongs to INT1. + */ + irq_info = bmc150_accel_interrupts_int1; + if (irq == of_irq_get_byname(dev->of_node, "INT2")) + irq_info = bmc150_accel_interrupts_int2; + for (i = 0; i < BMC150_ACCEL_INTERRUPTS; i++) - data->interrupts[i].info = &bmc150_accel_interrupts[i]; + data->interrupts[i].info = &irq_info[i]; } static int bmc150_accel_set_interrupt(struct bmc150_accel_data *data, int i, @@ -1714,7 +1761,7 @@ int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq, goto err_buffer_cleanup; } - bmc150_accel_interrupts_setup(indio_dev, data); + bmc150_accel_interrupts_setup(indio_dev, data, irq); ret = bmc150_accel_triggers_setup(indio_dev, data); if (ret) |