Lines Matching full:st
27 struct ad5592r_state *st = gpiochip_get_data(chip); in ad5592r_gpio_get() local
31 mutex_lock(&st->gpio_lock); in ad5592r_gpio_get()
33 if (st->gpio_out & BIT(offset)) in ad5592r_gpio_get()
34 val = st->gpio_val; in ad5592r_gpio_get()
36 ret = st->ops->gpio_read(st, &val); in ad5592r_gpio_get()
38 mutex_unlock(&st->gpio_lock); in ad5592r_gpio_get()
48 struct ad5592r_state *st = gpiochip_get_data(chip); in ad5592r_gpio_set() local
50 mutex_lock(&st->gpio_lock); in ad5592r_gpio_set()
53 st->gpio_val |= BIT(offset); in ad5592r_gpio_set()
55 st->gpio_val &= ~BIT(offset); in ad5592r_gpio_set()
57 st->ops->reg_write(st, AD5592R_REG_GPIO_SET, st->gpio_val); in ad5592r_gpio_set()
59 mutex_unlock(&st->gpio_lock); in ad5592r_gpio_set()
64 struct ad5592r_state *st = gpiochip_get_data(chip); in ad5592r_gpio_direction_input() local
67 mutex_lock(&st->gpio_lock); in ad5592r_gpio_direction_input()
69 st->gpio_out &= ~BIT(offset); in ad5592r_gpio_direction_input()
70 st->gpio_in |= BIT(offset); in ad5592r_gpio_direction_input()
72 ret = st->ops->reg_write(st, AD5592R_REG_GPIO_OUT_EN, st->gpio_out); in ad5592r_gpio_direction_input()
76 ret = st->ops->reg_write(st, AD5592R_REG_GPIO_IN_EN, st->gpio_in); in ad5592r_gpio_direction_input()
79 mutex_unlock(&st->gpio_lock); in ad5592r_gpio_direction_input()
87 struct ad5592r_state *st = gpiochip_get_data(chip); in ad5592r_gpio_direction_output() local
90 mutex_lock(&st->gpio_lock); in ad5592r_gpio_direction_output()
93 st->gpio_val |= BIT(offset); in ad5592r_gpio_direction_output()
95 st->gpio_val &= ~BIT(offset); in ad5592r_gpio_direction_output()
97 st->gpio_in &= ~BIT(offset); in ad5592r_gpio_direction_output()
98 st->gpio_out |= BIT(offset); in ad5592r_gpio_direction_output()
100 ret = st->ops->reg_write(st, AD5592R_REG_GPIO_SET, st->gpio_val); in ad5592r_gpio_direction_output()
104 ret = st->ops->reg_write(st, AD5592R_REG_GPIO_OUT_EN, st->gpio_out); in ad5592r_gpio_direction_output()
108 ret = st->ops->reg_write(st, AD5592R_REG_GPIO_IN_EN, st->gpio_in); in ad5592r_gpio_direction_output()
111 mutex_unlock(&st->gpio_lock); in ad5592r_gpio_direction_output()
118 struct ad5592r_state *st = gpiochip_get_data(chip); in ad5592r_gpio_request() local
120 if (!(st->gpio_map & BIT(offset))) { in ad5592r_gpio_request()
121 dev_err(st->dev, "GPIO %d is reserved by alternate function\n", in ad5592r_gpio_request()
129 static int ad5592r_gpio_init(struct ad5592r_state *st) in ad5592r_gpio_init() argument
131 if (!st->gpio_map) in ad5592r_gpio_init()
134 st->gpiochip.label = dev_name(st->dev); in ad5592r_gpio_init()
135 st->gpiochip.base = -1; in ad5592r_gpio_init()
136 st->gpiochip.ngpio = 8; in ad5592r_gpio_init()
137 st->gpiochip.parent = st->dev; in ad5592r_gpio_init()
138 st->gpiochip.can_sleep = true; in ad5592r_gpio_init()
139 st->gpiochip.direction_input = ad5592r_gpio_direction_input; in ad5592r_gpio_init()
140 st->gpiochip.direction_output = ad5592r_gpio_direction_output; in ad5592r_gpio_init()
141 st->gpiochip.get = ad5592r_gpio_get; in ad5592r_gpio_init()
142 st->gpiochip.set = ad5592r_gpio_set; in ad5592r_gpio_init()
143 st->gpiochip.request = ad5592r_gpio_request; in ad5592r_gpio_init()
144 st->gpiochip.owner = THIS_MODULE; in ad5592r_gpio_init()
146 mutex_init(&st->gpio_lock); in ad5592r_gpio_init()
148 return gpiochip_add_data(&st->gpiochip, st); in ad5592r_gpio_init()
151 static void ad5592r_gpio_cleanup(struct ad5592r_state *st) in ad5592r_gpio_cleanup() argument
153 if (st->gpio_map) in ad5592r_gpio_cleanup()
154 gpiochip_remove(&st->gpiochip); in ad5592r_gpio_cleanup()
157 static int ad5592r_reset(struct ad5592r_state *st) in ad5592r_reset() argument
160 struct iio_dev *iio_dev = iio_priv_to_dev(st); in ad5592r_reset()
162 gpio = devm_gpiod_get_optional(st->dev, "reset", GPIOD_OUT_LOW); in ad5592r_reset()
172 st->ops->reg_write(st, AD5592R_REG_RESET, 0xdac); in ad5592r_reset()
181 static int ad5592r_get_vref(struct ad5592r_state *st) in ad5592r_get_vref() argument
185 if (st->reg) { in ad5592r_get_vref()
186 ret = regulator_get_voltage(st->reg); in ad5592r_get_vref()
196 static int ad5592r_set_channel_modes(struct ad5592r_state *st) in ad5592r_set_channel_modes() argument
198 const struct ad5592r_rw_ops *ops = st->ops; in ad5592r_set_channel_modes()
201 struct iio_dev *iio_dev = iio_priv_to_dev(st); in ad5592r_set_channel_modes()
205 for (i = 0; i < st->num_channels; i++) { in ad5592r_set_channel_modes()
206 switch (st->channel_modes[i]) { in ad5592r_set_channel_modes()
221 st->gpio_map |= BIT(i); in ad5592r_set_channel_modes()
222 st->gpio_in |= BIT(i); /* Default to input */ in ad5592r_set_channel_modes()
228 switch (st->channel_offstate[i]) { in ad5592r_set_channel_modes()
234 st->gpio_out |= BIT(i); in ad5592r_set_channel_modes()
238 st->gpio_out |= BIT(i); in ad5592r_set_channel_modes()
239 st->gpio_val |= BIT(i); in ad5592r_set_channel_modes()
254 ret = ops->reg_write(st, AD5592R_REG_PULLDOWN, pulldown); in ad5592r_set_channel_modes()
258 ret = ops->reg_write(st, AD5592R_REG_TRISTATE, tristate); in ad5592r_set_channel_modes()
263 ret = ops->reg_write(st, AD5592R_REG_DAC_EN, dac); in ad5592r_set_channel_modes()
267 ret = ops->reg_write(st, AD5592R_REG_ADC_EN, adc); in ad5592r_set_channel_modes()
271 ret = ops->reg_write(st, AD5592R_REG_GPIO_SET, st->gpio_val); in ad5592r_set_channel_modes()
275 ret = ops->reg_write(st, AD5592R_REG_GPIO_OUT_EN, st->gpio_out); in ad5592r_set_channel_modes()
279 ret = ops->reg_write(st, AD5592R_REG_GPIO_IN_EN, st->gpio_in); in ad5592r_set_channel_modes()
284 ret = ops->reg_read(st, AD5592R_REG_ADC_EN, &read_back); in ad5592r_set_channel_modes()
293 static int ad5592r_reset_channel_modes(struct ad5592r_state *st) in ad5592r_reset_channel_modes() argument
297 for (i = 0; i < ARRAY_SIZE(st->channel_modes); i++) in ad5592r_reset_channel_modes()
298 st->channel_modes[i] = CH_MODE_UNUSED; in ad5592r_reset_channel_modes()
300 return ad5592r_set_channel_modes(st); in ad5592r_reset_channel_modes()
306 struct ad5592r_state *st = iio_priv(iio_dev); in ad5592r_write_raw() local
319 ret = st->ops->write_dac(st, chan->channel, val); in ad5592r_write_raw()
321 st->cached_dac[chan->channel] = val; in ad5592r_write_raw()
328 if (val == st->scale_avail[0][0] && in ad5592r_write_raw()
329 val2 == st->scale_avail[0][1]) in ad5592r_write_raw()
331 else if (val == st->scale_avail[1][0] && in ad5592r_write_raw()
332 val2 == st->scale_avail[1][1]) in ad5592r_write_raw()
339 ret = st->ops->reg_read(st, AD5592R_REG_CTRL, in ad5592r_write_raw()
340 &st->cached_gp_ctrl); in ad5592r_write_raw()
348 st->cached_gp_ctrl |= in ad5592r_write_raw()
351 st->cached_gp_ctrl &= in ad5592r_write_raw()
355 st->cached_gp_ctrl |= in ad5592r_write_raw()
358 st->cached_gp_ctrl &= in ad5592r_write_raw()
362 ret = st->ops->reg_write(st, AD5592R_REG_CTRL, in ad5592r_write_raw()
363 st->cached_gp_ctrl); in ad5592r_write_raw()
380 struct ad5592r_state *st = iio_priv(iio_dev); in ad5592r_read_raw() local
389 ret = st->ops->read_adc(st, chan->channel, &read_val); in ad5592r_read_raw()
394 dev_err(st->dev, "Error while reading channel %u\n", in ad5592r_read_raw()
403 read_val = st->cached_dac[chan->channel]; in ad5592r_read_raw()
406 dev_dbg(st->dev, "Channel %u read: 0x%04hX\n", in ad5592r_read_raw()
413 *val = ad5592r_get_vref(st); in ad5592r_read_raw()
426 mult = !!(st->cached_gp_ctrl & in ad5592r_read_raw()
429 mult = !!(st->cached_gp_ctrl & in ad5592r_read_raw()
439 ret = ad5592r_get_vref(st); in ad5592r_read_raw()
443 if (st->cached_gp_ctrl & AD5592R_REG_CTRL_ADC_RANGE) in ad5592r_read_raw()
483 struct ad5592r_state *st = iio_priv(iio_dev); in ad5592r_show_scale_available() local
486 st->scale_avail[0][0], st->scale_avail[0][1], in ad5592r_show_scale_available()
487 st->scale_avail[1][0], st->scale_avail[1][1]); in ad5592r_show_scale_available()
514 static int ad5592r_alloc_channels(struct ad5592r_state *st) in ad5592r_alloc_channels() argument
517 num_channels = st->num_channels; in ad5592r_alloc_channels()
518 struct iio_dev *iio_dev = iio_priv_to_dev(st); in ad5592r_alloc_channels()
524 device_for_each_child_node(st->dev, child) { in ad5592r_alloc_channels()
526 if (ret || reg >= ARRAY_SIZE(st->channel_modes)) in ad5592r_alloc_channels()
531 st->channel_modes[reg] = tmp; in ad5592r_alloc_channels()
535 st->channel_offstate[reg] = tmp; in ad5592r_alloc_channels()
538 channels = devm_kcalloc(st->dev, in ad5592r_alloc_channels()
545 switch (st->channel_modes[i]) { in ad5592r_alloc_channels()
585 static void ad5592r_init_scales(struct ad5592r_state *st, int vref_mV) in ad5592r_init_scales() argument
589 st->scale_avail[0][0] = in ad5592r_init_scales()
590 div_s64_rem(tmp, 1000000000LL, &st->scale_avail[0][1]); in ad5592r_init_scales()
591 st->scale_avail[1][0] = in ad5592r_init_scales()
592 div_s64_rem(tmp * 2, 1000000000LL, &st->scale_avail[1][1]); in ad5592r_init_scales()
599 struct ad5592r_state *st; in ad5592r_probe() local
602 iio_dev = devm_iio_device_alloc(dev, sizeof(*st)); in ad5592r_probe()
606 st = iio_priv(iio_dev); in ad5592r_probe()
607 st->dev = dev; in ad5592r_probe()
608 st->ops = ops; in ad5592r_probe()
609 st->num_channels = 8; in ad5592r_probe()
612 st->reg = devm_regulator_get_optional(dev, "vref"); in ad5592r_probe()
613 if (IS_ERR(st->reg)) { in ad5592r_probe()
614 if ((PTR_ERR(st->reg) != -ENODEV) && dev->of_node) in ad5592r_probe()
615 return PTR_ERR(st->reg); in ad5592r_probe()
617 st->reg = NULL; in ad5592r_probe()
619 ret = regulator_enable(st->reg); in ad5592r_probe()
629 ad5592r_init_scales(st, ad5592r_get_vref(st)); in ad5592r_probe()
631 ret = ad5592r_reset(st); in ad5592r_probe()
635 ret = ops->reg_write(st, AD5592R_REG_PD, in ad5592r_probe()
636 (st->reg == NULL) ? AD5592R_REG_PD_EN_REF : 0); in ad5592r_probe()
640 ret = ad5592r_alloc_channels(st); in ad5592r_probe()
644 ret = ad5592r_set_channel_modes(st); in ad5592r_probe()
652 ret = ad5592r_gpio_init(st); in ad5592r_probe()
662 ad5592r_reset_channel_modes(st); in ad5592r_probe()
665 if (st->reg) in ad5592r_probe()
666 regulator_disable(st->reg); in ad5592r_probe()
675 struct ad5592r_state *st = iio_priv(iio_dev); in ad5592r_remove() local
678 ad5592r_reset_channel_modes(st); in ad5592r_remove()
679 ad5592r_gpio_cleanup(st); in ad5592r_remove()
681 if (st->reg) in ad5592r_remove()
682 regulator_disable(st->reg); in ad5592r_remove()