diff options
Diffstat (limited to 'include/linux/iio/imu/adis.h')
| -rw-r--r-- | include/linux/iio/imu/adis.h | 118 |
1 files changed, 58 insertions, 60 deletions
diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h index 8898966bc0f0..aa160511e265 100644 --- a/include/linux/iio/imu/adis.h +++ b/include/linux/iio/imu/adis.h @@ -9,6 +9,7 @@ #ifndef __IIO_ADIS_H__ #define __IIO_ADIS_H__ +#include <linux/cleanup.h> #include <linux/spi/spi.h> #include <linux/interrupt.h> #include <linux/iio/iio.h> @@ -21,6 +22,7 @@ #define ADIS_REG_PAGE_ID 0x00 struct adis; +struct iio_dev_attr; /** * struct adis_timeouts - ADIS chip variant timeouts @@ -42,6 +44,8 @@ struct adis_timeout { * @glob_cmd_reg: Register address of the GLOB_CMD register * @msc_ctrl_reg: Register address of the MSC_CTRL register * @diag_stat_reg: Register address of the DIAG_STAT register + * @diag_stat_size: Length (in bytes) of the DIAG_STAT register. If 0 the + * default length is 2 bytes long. * @prod_id_reg: Register address of the PROD_ID register * @prod_id: Product ID code that should be expected when reading @prod_id_reg * @self_test_mask: Bitmask of supported self-test operations @@ -68,6 +72,7 @@ struct adis_data { unsigned int glob_cmd_reg; unsigned int msc_ctrl_reg; unsigned int diag_stat_reg; + unsigned int diag_stat_size; unsigned int prod_id_reg; unsigned int prod_id; @@ -84,6 +89,7 @@ struct adis_data { bool unmasked_drdy; bool has_paging; + bool has_fifo; unsigned int burst_reg_cmd; unsigned int burst_len; @@ -92,13 +98,28 @@ struct adis_data { }; /** + * struct adis_ops: Custom ops for adis devices. + * @write: Custom spi write implementation. + * @read: Custom spi read implementation. + * @reset: Custom sw reset implementation. The custom implementation does not + * need to sleep after the reset. It's done by the library already. + */ +struct adis_ops { + int (*write)(struct adis *adis, unsigned int reg, unsigned int value, + unsigned int size); + int (*read)(struct adis *adis, unsigned int reg, unsigned int *value, + unsigned int size); + int (*reset)(struct adis *adis); +}; + +/** * struct adis - ADIS device instance data * @spi: Reference to SPI device which owns this ADIS IIO device * @trig: IIO trigger object data * @data: ADIS chip variant specific data - * @burst: ADIS burst transfer information * @burst_extra_len: Burst extra length. Should only be used by devices that can * dynamically change their burst mode length. + * @ops: ops struct for custom read and write functions * @state_lock: Lock used by the device to protect state * @msg: SPI message object * @xfer: SPI transfer objects to be used for a @msg @@ -114,6 +135,7 @@ struct adis { const struct adis_data *data; unsigned int burst_extra_len; + const struct adis_ops *ops; /** * The state_lock is meant to be used during operations that require * a sequence of SPI R/W in order to protect the SPI transfer @@ -148,13 +170,8 @@ int __adis_reset(struct adis *adis); */ static inline int adis_reset(struct adis *adis) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_reset(adis); - mutex_unlock(&adis->state_lock); - - return ret; + guard(mutex)(&adis->state_lock); + return __adis_reset(adis); } int __adis_write_reg(struct adis *adis, unsigned int reg, @@ -171,7 +188,7 @@ int __adis_read_reg(struct adis *adis, unsigned int reg, static inline int __adis_write_reg_8(struct adis *adis, unsigned int reg, u8 val) { - return __adis_write_reg(adis, reg, val, 1); + return adis->ops->write(adis, reg, val, 1); } /** @@ -183,7 +200,7 @@ static inline int __adis_write_reg_8(struct adis *adis, unsigned int reg, static inline int __adis_write_reg_16(struct adis *adis, unsigned int reg, u16 val) { - return __adis_write_reg(adis, reg, val, 2); + return adis->ops->write(adis, reg, val, 2); } /** @@ -195,7 +212,7 @@ static inline int __adis_write_reg_16(struct adis *adis, unsigned int reg, static inline int __adis_write_reg_32(struct adis *adis, unsigned int reg, u32 val) { - return __adis_write_reg(adis, reg, val, 4); + return adis->ops->write(adis, reg, val, 4); } /** @@ -210,7 +227,7 @@ static inline int __adis_read_reg_16(struct adis *adis, unsigned int reg, unsigned int tmp; int ret; - ret = __adis_read_reg(adis, reg, &tmp, 2); + ret = adis->ops->read(adis, reg, &tmp, 2); if (ret == 0) *val = tmp; @@ -229,7 +246,7 @@ static inline int __adis_read_reg_32(struct adis *adis, unsigned int reg, unsigned int tmp; int ret; - ret = __adis_read_reg(adis, reg, &tmp, 4); + ret = adis->ops->read(adis, reg, &tmp, 4); if (ret == 0) *val = tmp; @@ -246,13 +263,8 @@ static inline int __adis_read_reg_32(struct adis *adis, unsigned int reg, static inline int adis_write_reg(struct adis *adis, unsigned int reg, unsigned int val, unsigned int size) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_write_reg(adis, reg, val, size); - mutex_unlock(&adis->state_lock); - - return ret; + guard(mutex)(&adis->state_lock); + return adis->ops->write(adis, reg, val, size); } /** @@ -265,13 +277,8 @@ static inline int adis_write_reg(struct adis *adis, unsigned int reg, static int adis_read_reg(struct adis *adis, unsigned int reg, unsigned int *val, unsigned int size) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_read_reg(adis, reg, val, size); - mutex_unlock(&adis->state_lock); - - return ret; + guard(mutex)(&adis->state_lock); + return adis->ops->read(adis, reg, val, size); } /** @@ -363,12 +370,8 @@ int __adis_update_bits_base(struct adis *adis, unsigned int reg, const u32 mask, static inline int adis_update_bits_base(struct adis *adis, unsigned int reg, const u32 mask, const u32 val, u8 size) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_update_bits_base(adis, reg, mask, val, size); - mutex_unlock(&adis->state_lock); - return ret; + guard(mutex)(&adis->state_lock); + return __adis_update_bits_base(adis, reg, mask, val, size); } /** @@ -409,35 +412,19 @@ int __adis_enable_irq(struct adis *adis, bool enable); static inline int adis_enable_irq(struct adis *adis, bool enable) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_enable_irq(adis, enable); - mutex_unlock(&adis->state_lock); - - return ret; + guard(mutex)(&adis->state_lock); + return __adis_enable_irq(adis, enable); } static inline int adis_check_status(struct adis *adis) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_check_status(adis); - mutex_unlock(&adis->state_lock); - - return ret; -} - -static inline void adis_dev_lock(struct adis *adis) -{ - mutex_lock(&adis->state_lock); + guard(mutex)(&adis->state_lock); + return __adis_check_status(adis); } -static inline void adis_dev_unlock(struct adis *adis) -{ - mutex_unlock(&adis->state_lock); -} +#define adis_dev_auto_lock(adis) guard(mutex)(&(adis)->state_lock) +#define adis_dev_auto_scoped_lock(adis) \ + scoped_guard(mutex, &(adis)->state_lock) int adis_single_conversion(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, @@ -515,11 +502,19 @@ int adis_single_conversion(struct iio_dev *indio_dev, #define ADIS_ROT_CHAN(mod, addr, si, info_sep, info_all, bits) \ ADIS_MOD_CHAN(IIO_ROT, mod, addr, si, info_sep, info_all, bits) +#define devm_adis_setup_buffer_and_trigger(adis, indio_dev, trigger_handler) \ + devm_adis_setup_buffer_and_trigger_with_attrs((adis), (indio_dev), \ + (trigger_handler), NULL, \ + NULL) + #ifdef CONFIG_IIO_ADIS_LIB_BUFFER int -devm_adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev, - irq_handler_t trigger_handler); +devm_adis_setup_buffer_and_trigger_with_attrs(struct adis *adis, + struct iio_dev *indio_dev, + irq_handler_t trigger_handler, + const struct iio_buffer_setup_ops *ops, + const struct iio_dev_attr **buffer_attrs); int devm_adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev); @@ -529,8 +524,11 @@ int adis_update_scan_mode(struct iio_dev *indio_dev, #else /* CONFIG_IIO_BUFFER */ static inline int -devm_adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev, - irq_handler_t trigger_handler) +devm_adis_setup_buffer_and_trigger_with_attrs(struct adis *adis, + struct iio_dev *indio_dev, + irq_handler_t trigger_handler, + const struct iio_buffer_setup_ops *ops, + const struct iio_dev_attr **buffer_attrs) { return 0; } |