Lines Matching refs:ak8974
186 struct ak8974 { struct
207 static int ak8974_get_u16_val(struct ak8974 *ak8974, u8 reg, u16 *val) in ak8974_get_u16_val() argument
212 ret = regmap_bulk_read(ak8974->map, reg, &bulk, 2); in ak8974_get_u16_val()
220 static int ak8974_set_u16_val(struct ak8974 *ak8974, u8 reg, u16 val) in ak8974_set_u16_val() argument
224 return regmap_bulk_write(ak8974->map, reg, &bulk, 2); in ak8974_set_u16_val()
227 static int ak8974_set_power(struct ak8974 *ak8974, bool mode) in ak8974_set_power() argument
234 ret = regmap_write(ak8974->map, AK8974_CTRL1, val); in ak8974_set_power()
244 static int ak8974_reset(struct ak8974 *ak8974) in ak8974_reset() argument
249 ret = ak8974_set_power(ak8974, AK8974_PWR_ON); in ak8974_reset()
252 ret = regmap_write(ak8974->map, AK8974_CTRL2, AK8974_CTRL2_RESDEF); in ak8974_reset()
255 ret = regmap_write(ak8974->map, AK8974_CTRL3, AK8974_CTRL3_RESDEF); in ak8974_reset()
258 if (ak8974->variant != AK8974_WHOAMI_VALUE_HSCDTD008A) { in ak8974_reset()
259 ret = regmap_write(ak8974->map, AK8974_INT_CTRL, in ak8974_reset()
264 ret = regmap_write(ak8974->map, HSCDTD008A_CTRL4, in ak8974_reset()
271 return ak8974_set_power(ak8974, AK8974_PWR_OFF); in ak8974_reset()
274 static int ak8974_configure(struct ak8974 *ak8974) in ak8974_configure() argument
278 ret = regmap_write(ak8974->map, AK8974_CTRL2, AK8974_CTRL2_DRDY_EN | in ak8974_configure()
282 ret = regmap_write(ak8974->map, AK8974_CTRL3, 0); in ak8974_configure()
285 if (ak8974->variant == AK8974_WHOAMI_VALUE_AMI306) { in ak8974_configure()
287 ret = ak8974_set_u16_val(ak8974, AMI306_CTRL4, 0xA07E); in ak8974_configure()
291 if (ak8974->variant == AK8974_WHOAMI_VALUE_HSCDTD008A) in ak8974_configure()
293 ret = regmap_write(ak8974->map, AK8974_INT_CTRL, AK8974_INT_CTRL_POL); in ak8974_configure()
297 return regmap_write(ak8974->map, AK8974_PRESET, 0); in ak8974_configure()
300 static int ak8974_trigmeas(struct ak8974 *ak8974) in ak8974_trigmeas() argument
308 ret = regmap_read(ak8974->map, AK8974_INT_CLEAR, &clear); in ak8974_trigmeas()
313 if (ak8974->drdy_irq) { in ak8974_trigmeas()
319 if (!ak8974->drdy_active_low) in ak8974_trigmeas()
322 init_completion(&ak8974->drdy_complete); in ak8974_trigmeas()
323 ret = regmap_update_bits(ak8974->map, AK8974_CTRL2, in ak8974_trigmeas()
330 return regmap_update_bits(ak8974->map, in ak8974_trigmeas()
336 static int ak8974_await_drdy(struct ak8974 *ak8974) in ak8974_await_drdy() argument
342 if (ak8974->drdy_irq) { in ak8974_await_drdy()
343 ret = wait_for_completion_timeout(&ak8974->drdy_complete, in ak8974_await_drdy()
346 dev_err(&ak8974->i2c->dev, in ak8974_await_drdy()
356 ret = regmap_read(ak8974->map, AK8974_STATUS, &val); in ak8974_await_drdy()
363 dev_err(&ak8974->i2c->dev, "timeout waiting for DRDY\n"); in ak8974_await_drdy()
367 static int ak8974_getresult(struct ak8974 *ak8974, __le16 *result) in ak8974_getresult() argument
372 ret = ak8974_await_drdy(ak8974); in ak8974_getresult()
375 ret = regmap_read(ak8974->map, AK8974_INT_SRC, &src); in ak8974_getresult()
381 dev_err(&ak8974->i2c->dev, in ak8974_getresult()
386 ret = regmap_bulk_read(ak8974->map, AK8974_DATA_X, result, 6); in ak8974_getresult()
395 struct ak8974 *ak8974 = d; in ak8974_drdy_irq() local
397 if (!ak8974->drdy_irq) in ak8974_drdy_irq()
406 struct ak8974 *ak8974 = d; in ak8974_drdy_irq_thread() local
411 ret = regmap_read(ak8974->map, AK8974_STATUS, &val); in ak8974_drdy_irq_thread()
413 dev_err(&ak8974->i2c->dev, "error reading DRDY status\n"); in ak8974_drdy_irq_thread()
418 complete(&ak8974->drdy_complete); in ak8974_drdy_irq_thread()
426 static int ak8974_selftest(struct ak8974 *ak8974) in ak8974_selftest() argument
428 struct device *dev = &ak8974->i2c->dev; in ak8974_selftest()
432 ret = regmap_read(ak8974->map, AK8974_SELFTEST, &val); in ak8974_selftest()
441 ret = regmap_update_bits(ak8974->map, in ak8974_selftest()
452 ret = regmap_read(ak8974->map, AK8974_SELFTEST, &val); in ak8974_selftest()
460 ret = regmap_read(ak8974->map, AK8974_SELFTEST, &val); in ak8974_selftest()
472 static void ak8974_read_calib_data(struct ak8974 *ak8974, unsigned int reg, in ak8974_read_calib_data() argument
475 int ret = regmap_bulk_read(ak8974->map, reg, tab, tab_size); in ak8974_read_calib_data()
478 dev_warn(&ak8974->i2c->dev, in ak8974_read_calib_data()
486 static int ak8974_detect(struct ak8974 *ak8974) in ak8974_detect() argument
494 ret = regmap_read(ak8974->map, AK8974_WHOAMI, &whoami); in ak8974_detect()
505 ret = regmap_read(ak8974->map, AMI305_VER, &fw); in ak8974_detect()
509 ret = ak8974_get_u16_val(ak8974, AMI305_SN, &sn); in ak8974_detect()
513 dev_info(&ak8974->i2c->dev, in ak8974_detect()
519 dev_info(&ak8974->i2c->dev, "detected AK8974\n"); in ak8974_detect()
523 dev_info(&ak8974->i2c->dev, "detected hscdtd008a\n"); in ak8974_detect()
526 dev_err(&ak8974->i2c->dev, "unsupported device (%02x) ", in ak8974_detect()
531 ak8974->name = name; in ak8974_detect()
532 ak8974->variant = whoami; in ak8974_detect()
538 ak8974_read_calib_data(ak8974, AMI306_FINEOUTPUT_X, in ak8974_detect()
540 ak8974_read_calib_data(ak8974, AMI306_OFFZERO_X, in ak8974_detect()
554 dev_info(&ak8974->i2c->dev, in ak8974_detect()
564 static int ak8974_measure_channel(struct ak8974 *ak8974, unsigned long address, in ak8974_measure_channel() argument
570 pm_runtime_get_sync(&ak8974->i2c->dev); in ak8974_measure_channel()
571 mutex_lock(&ak8974->lock); in ak8974_measure_channel()
577 ret = ak8974_trigmeas(ak8974); in ak8974_measure_channel()
580 ret = ak8974_getresult(ak8974, hw_values); in ak8974_measure_channel()
591 mutex_unlock(&ak8974->lock); in ak8974_measure_channel()
592 pm_runtime_mark_last_busy(&ak8974->i2c->dev); in ak8974_measure_channel()
593 pm_runtime_put_autosuspend(&ak8974->i2c->dev); in ak8974_measure_channel()
603 struct ak8974 *ak8974 = iio_priv(indio_dev); in ak8974_read_raw() local
609 dev_err(&ak8974->i2c->dev, "faulty channel address\n"); in ak8974_read_raw()
612 ret = ak8974_measure_channel(ak8974, chan->address, val); in ak8974_read_raw()
617 switch (ak8974->variant) { in ak8974_read_raw()
665 struct ak8974 *ak8974 = iio_priv(indio_dev); in ak8974_fill_buffer() local
668 pm_runtime_get_sync(&ak8974->i2c->dev); in ak8974_fill_buffer()
669 mutex_lock(&ak8974->lock); in ak8974_fill_buffer()
671 ret = ak8974_trigmeas(ak8974); in ak8974_fill_buffer()
673 dev_err(&ak8974->i2c->dev, "error triggering measure\n"); in ak8974_fill_buffer()
676 ret = ak8974_getresult(ak8974, ak8974->scan.channels); in ak8974_fill_buffer()
678 dev_err(&ak8974->i2c->dev, "error getting measures\n"); in ak8974_fill_buffer()
682 iio_push_to_buffers_with_timestamp(indio_dev, &ak8974->scan, in ak8974_fill_buffer()
686 mutex_unlock(&ak8974->lock); in ak8974_fill_buffer()
687 pm_runtime_mark_last_busy(&ak8974->i2c->dev); in ak8974_fill_buffer()
688 pm_runtime_put_autosuspend(&ak8974->i2c->dev); in ak8974_fill_buffer()
706 struct ak8974 *ak8974 = iio_priv(indio_dev); in ak8974_get_mount_matrix() local
708 return &ak8974->orientation; in ak8974_get_mount_matrix()
767 struct ak8974 *ak8974 = iio_priv(indio_dev); in ak8974_writeable_reg() local
779 return ak8974->variant != AK8974_WHOAMI_VALUE_HSCDTD008A; in ak8974_writeable_reg()
786 return ak8974->variant == AK8974_WHOAMI_VALUE_AK8974 || in ak8974_writeable_reg()
787 ak8974->variant == AK8974_WHOAMI_VALUE_HSCDTD008A; in ak8974_writeable_reg()
794 return ak8974->variant == AK8974_WHOAMI_VALUE_AMI305 || in ak8974_writeable_reg()
795 ak8974->variant == AK8974_WHOAMI_VALUE_AMI306; in ak8974_writeable_reg()
798 return ak8974->variant == AK8974_WHOAMI_VALUE_AMI306; in ak8974_writeable_reg()
820 struct ak8974 *ak8974; in ak8974_probe() local
826 indio_dev = devm_iio_device_alloc(&i2c->dev, sizeof(*ak8974)); in ak8974_probe()
830 ak8974 = iio_priv(indio_dev); in ak8974_probe()
832 ak8974->i2c = i2c; in ak8974_probe()
833 mutex_init(&ak8974->lock); in ak8974_probe()
835 ret = iio_read_mount_matrix(&i2c->dev, &ak8974->orientation); in ak8974_probe()
839 ak8974->regs[0].supply = ak8974_reg_avdd; in ak8974_probe()
840 ak8974->regs[1].supply = ak8974_reg_dvdd; in ak8974_probe()
843 ARRAY_SIZE(ak8974->regs), in ak8974_probe()
844 ak8974->regs); in ak8974_probe()
848 ret = regulator_bulk_enable(ARRAY_SIZE(ak8974->regs), ak8974->regs); in ak8974_probe()
859 ak8974->map = devm_regmap_init_i2c(i2c, &ak8974_regmap_config); in ak8974_probe()
860 if (IS_ERR(ak8974->map)) { in ak8974_probe()
864 return PTR_ERR(ak8974->map); in ak8974_probe()
867 ret = ak8974_set_power(ak8974, AK8974_PWR_ON); in ak8974_probe()
873 ret = ak8974_detect(ak8974); in ak8974_probe()
879 ret = ak8974_selftest(ak8974); in ak8974_probe()
883 ret = ak8974_reset(ak8974); in ak8974_probe()
889 switch (ak8974->variant) { in ak8974_probe()
907 indio_dev->name = ak8974->name; in ak8974_probe()
923 ak8974->drdy_active_low = true; in ak8974_probe()
936 ak8974->name, in ak8974_probe()
937 ak8974); in ak8974_probe()
943 ak8974->drdy_irq = true; in ak8974_probe()
965 ak8974_set_power(ak8974, AK8974_PWR_OFF); in ak8974_probe()
966 regulator_bulk_disable(ARRAY_SIZE(ak8974->regs), ak8974->regs); in ak8974_probe()
974 struct ak8974 *ak8974 = iio_priv(indio_dev); in ak8974_remove() local
981 ak8974_set_power(ak8974, AK8974_PWR_OFF); in ak8974_remove()
982 regulator_bulk_disable(ARRAY_SIZE(ak8974->regs), ak8974->regs); in ak8974_remove()
987 struct ak8974 *ak8974 = in ak8974_runtime_suspend() local
990 ak8974_set_power(ak8974, AK8974_PWR_OFF); in ak8974_runtime_suspend()
991 regulator_bulk_disable(ARRAY_SIZE(ak8974->regs), ak8974->regs); in ak8974_runtime_suspend()
998 struct ak8974 *ak8974 = in ak8974_runtime_resume() local
1002 ret = regulator_bulk_enable(ARRAY_SIZE(ak8974->regs), ak8974->regs); in ak8974_runtime_resume()
1006 ret = ak8974_set_power(ak8974, AK8974_PWR_ON); in ak8974_runtime_resume()
1010 ret = ak8974_configure(ak8974); in ak8974_runtime_resume()
1017 ak8974_set_power(ak8974, AK8974_PWR_OFF); in ak8974_runtime_resume()
1019 regulator_bulk_disable(ARRAY_SIZE(ak8974->regs), ak8974->regs); in ak8974_runtime_resume()