Lines Matching refs:ti_dac
66 static int ti_dac_cmd(struct ti_dac_chip *ti_dac, u8 cmd, u16 val) in ti_dac_cmd() argument
68 u8 shift = 12 - ti_dac->resolution; in ti_dac_cmd()
70 ti_dac->buf[0] = cmd | (val >> (8 - shift)); in ti_dac_cmd()
71 ti_dac->buf[1] = (val << shift) & 0xff; in ti_dac_cmd()
72 return spi_sync(ti_dac->mesg.spi, &ti_dac->mesg); in ti_dac_cmd()
82 struct ti_dac_chip *ti_dac = iio_priv(indio_dev); in ti_dac_get_powerdown_mode() local
84 return ti_dac->powerdown_mode; in ti_dac_get_powerdown_mode()
91 struct ti_dac_chip *ti_dac = iio_priv(indio_dev); in ti_dac_set_powerdown_mode() local
94 if (ti_dac->powerdown_mode == mode) in ti_dac_set_powerdown_mode()
97 mutex_lock(&ti_dac->lock); in ti_dac_set_powerdown_mode()
98 if (ti_dac->powerdown) { in ti_dac_set_powerdown_mode()
99 ret = ti_dac_cmd(ti_dac, POWERDOWN(mode), 0); in ti_dac_set_powerdown_mode()
103 ti_dac->powerdown_mode = mode; in ti_dac_set_powerdown_mode()
106 mutex_unlock(&ti_dac->lock); in ti_dac_set_powerdown_mode()
122 struct ti_dac_chip *ti_dac = iio_priv(indio_dev); in ti_dac_read_powerdown() local
124 return sysfs_emit(buf, "%d\n", ti_dac->powerdown); in ti_dac_read_powerdown()
132 struct ti_dac_chip *ti_dac = iio_priv(indio_dev); in ti_dac_write_powerdown() local
140 if (ti_dac->powerdown == powerdown) in ti_dac_write_powerdown()
143 mutex_lock(&ti_dac->lock); in ti_dac_write_powerdown()
145 ret = ti_dac_cmd(ti_dac, POWERDOWN(ti_dac->powerdown_mode), 0); in ti_dac_write_powerdown()
147 ret = ti_dac_cmd(ti_dac, WRITE_AND_UPDATE(0), ti_dac->val[0]); in ti_dac_write_powerdown()
149 ti_dac->powerdown = powerdown; in ti_dac_write_powerdown()
150 mutex_unlock(&ti_dac->lock); in ti_dac_write_powerdown()
190 struct ti_dac_chip *ti_dac = iio_priv(indio_dev); in ti_dac_read_raw() local
195 *val = ti_dac->val[chan->channel]; in ti_dac_read_raw()
200 ret = regulator_get_voltage(ti_dac->vref); in ti_dac_read_raw()
205 *val2 = ti_dac->resolution; in ti_dac_read_raw()
220 struct ti_dac_chip *ti_dac = iio_priv(indio_dev); in ti_dac_write_raw() local
225 if (ti_dac->val[chan->channel] == val) in ti_dac_write_raw()
228 if (val >= (1 << ti_dac->resolution) || val < 0) in ti_dac_write_raw()
231 if (ti_dac->powerdown) in ti_dac_write_raw()
234 mutex_lock(&ti_dac->lock); in ti_dac_write_raw()
235 ret = ti_dac_cmd(ti_dac, WRITE_AND_UPDATE(chan->channel), val); in ti_dac_write_raw()
237 ti_dac->val[chan->channel] = val; in ti_dac_write_raw()
238 mutex_unlock(&ti_dac->lock); in ti_dac_write_raw()
264 struct ti_dac_chip *ti_dac; in ti_dac_probe() local
268 indio_dev = devm_iio_device_alloc(dev, sizeof(*ti_dac)); in ti_dac_probe()
278 ti_dac = iio_priv(indio_dev); in ti_dac_probe()
279 ti_dac->xfer.tx_buf = &ti_dac->buf; in ti_dac_probe()
280 ti_dac->xfer.len = sizeof(ti_dac->buf); in ti_dac_probe()
281 spi_message_init_with_transfers(&ti_dac->mesg, &ti_dac->xfer, 1); in ti_dac_probe()
282 ti_dac->mesg.spi = spi; in ti_dac_probe()
286 ti_dac->resolution = spec->resolution; in ti_dac_probe()
288 ti_dac->vref = devm_regulator_get(dev, "vref"); in ti_dac_probe()
289 if (IS_ERR(ti_dac->vref)) in ti_dac_probe()
290 return PTR_ERR(ti_dac->vref); in ti_dac_probe()
292 ret = regulator_enable(ti_dac->vref); in ti_dac_probe()
296 mutex_init(&ti_dac->lock); in ti_dac_probe()
298 ret = ti_dac_cmd(ti_dac, WRITE_ALL_UPDATE, 0); in ti_dac_probe()
311 mutex_destroy(&ti_dac->lock); in ti_dac_probe()
312 regulator_disable(ti_dac->vref); in ti_dac_probe()
319 struct ti_dac_chip *ti_dac = iio_priv(indio_dev); in ti_dac_remove() local
322 mutex_destroy(&ti_dac->lock); in ti_dac_remove()
323 regulator_disable(ti_dac->vref); in ti_dac_remove()