Lines Matching full:st
26 struct ad5592r_state *st = gpiochip_get_data(chip);
30 scoped_guard(mutex, &st->gpio_lock) {
31 if (st->gpio_out & BIT(offset))
32 val = st->gpio_val;
34 ret = st->ops->gpio_read(st, &val);
46 struct ad5592r_state *st = gpiochip_get_data(chip);
48 guard(mutex)(&st->gpio_lock);
51 st->gpio_val |= BIT(offset);
53 st->gpio_val &= ~BIT(offset);
55 return st->ops->reg_write(st, AD5592R_REG_GPIO_SET, st->gpio_val);
60 struct ad5592r_state *st = gpiochip_get_data(chip);
63 guard(mutex)(&st->gpio_lock);
65 st->gpio_out &= ~BIT(offset);
66 st->gpio_in |= BIT(offset);
68 ret = st->ops->reg_write(st, AD5592R_REG_GPIO_OUT_EN, st->gpio_out);
72 return st->ops->reg_write(st, AD5592R_REG_GPIO_IN_EN, st->gpio_in);
78 struct ad5592r_state *st = gpiochip_get_data(chip);
81 guard(mutex)(&st->gpio_lock);
84 st->gpio_val |= BIT(offset);
86 st->gpio_val &= ~BIT(offset);
88 st->gpio_in &= ~BIT(offset);
89 st->gpio_out |= BIT(offset);
91 ret = st->ops->reg_write(st, AD5592R_REG_GPIO_SET, st->gpio_val);
95 ret = st->ops->reg_write(st, AD5592R_REG_GPIO_OUT_EN, st->gpio_out);
99 return st->ops->reg_write(st, AD5592R_REG_GPIO_IN_EN, st->gpio_in);
104 struct ad5592r_state *st = gpiochip_get_data(chip);
106 if (!(st->gpio_map & BIT(offset))) {
107 dev_err(st->dev, "GPIO %d is reserved by alternate function\n",
119 static int ad5592r_gpio_init(struct ad5592r_state *st)
121 if (!st->gpio_map)
124 st->gpiochip.label = dev_name(st->dev);
125 st->gpiochip.base = -1;
126 st->gpiochip.ngpio = 8;
127 st->gpiochip.parent = st->dev;
128 st->gpiochip.can_sleep = true;
129 st->gpiochip.direction_input = ad5592r_gpio_direction_input;
130 st->gpiochip.direction_output = ad5592r_gpio_direction_output;
131 st->gpiochip.get = ad5592r_gpio_get;
132 st->gpiochip.set = ad5592r_gpio_set;
133 st->gpiochip.request = ad5592r_gpio_request;
134 st->gpiochip.owner = THIS_MODULE;
135 st->gpiochip.names = ad5592r_gpio_names;
137 mutex_init(&st->gpio_lock);
139 return gpiochip_add_data(&st->gpiochip, st);
142 static void ad5592r_gpio_cleanup(struct ad5592r_state *st)
144 if (st->gpio_map)
145 gpiochip_remove(&st->gpiochip);
147 mutex_destroy(&st->gpio_lock);
150 static int ad5592r_reset(struct ad5592r_state *st)
154 gpio = devm_gpiod_get_optional(st->dev, "reset", GPIOD_OUT_LOW);
162 scoped_guard(mutex, &st->lock)
164 st->ops->reg_write(st, AD5592R_REG_RESET, 0xdac);
172 static int ad5592r_get_vref(struct ad5592r_state *st)
176 if (st->reg) {
177 ret = regulator_get_voltage(st->reg);
187 static int ad5592r_set_channel_modes(struct ad5592r_state *st)
189 const struct ad5592r_rw_ops *ops = st->ops;
195 for (i = 0; i < st->num_channels; i++) {
196 switch (st->channel_modes[i]) {
211 st->gpio_map |= BIT(i);
212 st->gpio_in |= BIT(i); /* Default to input */
217 switch (st->channel_offstate[i]) {
223 st->gpio_out |= BIT(i);
227 st->gpio_out |= BIT(i);
228 st->gpio_val |= BIT(i);
239 guard(mutex)(&st->lock);
242 ret = ops->reg_write(st, AD5592R_REG_PULLDOWN, pulldown);
246 ret = ops->reg_write(st, AD5592R_REG_TRISTATE, tristate);
251 ret = ops->reg_write(st, AD5592R_REG_DAC_EN, dac);
255 ret = ops->reg_write(st, AD5592R_REG_ADC_EN, adc);
259 ret = ops->reg_write(st, AD5592R_REG_GPIO_SET, st->gpio_val);
263 ret = ops->reg_write(st, AD5592R_REG_GPIO_OUT_EN, st->gpio_out);
267 ret = ops->reg_write(st, AD5592R_REG_GPIO_IN_EN, st->gpio_in);
272 ret = ops->reg_read(st, AD5592R_REG_ADC_EN, &read_back);
279 static int ad5592r_reset_channel_modes(struct ad5592r_state *st)
283 for (i = 0; i < ARRAY_SIZE(st->channel_modes); i++)
284 st->channel_modes[i] = CH_MODE_UNUSED;
286 return ad5592r_set_channel_modes(st);
292 struct ad5592r_state *st = iio_priv(iio_dev);
304 scoped_guard(mutex, &st->lock) {
305 ret = st->ops->write_dac(st, chan->channel, val);
307 st->cached_dac[chan->channel] = val;
314 if (val == st->scale_avail[0][0] &&
315 val2 == st->scale_avail[0][1])
317 else if (val == st->scale_avail[1][0] &&
318 val2 == st->scale_avail[1][1])
323 guard(mutex)(&st->lock);
325 ret = st->ops->reg_read(st, AD5592R_REG_CTRL,
326 &st->cached_gp_ctrl);
332 st->cached_gp_ctrl |=
335 st->cached_gp_ctrl &=
339 st->cached_gp_ctrl |=
342 st->cached_gp_ctrl &=
346 return st->ops->reg_write(st, AD5592R_REG_CTRL,
347 st->cached_gp_ctrl);
361 struct ad5592r_state *st = iio_priv(iio_dev);
368 scoped_guard(mutex, &st->lock)
369 ret = st->ops->read_adc(st, chan->channel,
375 dev_err(st->dev, "Error while reading channel %u\n",
383 scoped_guard(mutex, &st->lock)
384 read_val = st->cached_dac[chan->channel];
387 dev_dbg(st->dev, "Channel %u read: 0x%04hX\n",
393 *val = ad5592r_get_vref(st);
402 scoped_guard(mutex, &st->lock) {
404 mult = !!(st->cached_gp_ctrl &
407 mult = !!(st->cached_gp_ctrl &
417 ret = ad5592r_get_vref(st);
419 guard(mutex)(&st->lock);
421 if (st->cached_gp_ctrl & AD5592R_REG_CTRL_ADC_RANGE)
458 struct ad5592r_state *st = iio_priv(iio_dev);
461 st->scale_avail[0][0], st->scale_avail[0][1],
462 st->scale_avail[1][0], st->scale_avail[1][1]);
491 struct ad5592r_state *st = iio_priv(iio_dev);
493 num_channels = st->num_channels;
499 device_for_each_child_node(st->dev, child) {
501 if (ret || reg >= ARRAY_SIZE(st->channel_modes))
506 st->channel_modes[reg] = tmp;
510 st->channel_offstate[reg] = tmp;
513 channels = devm_kcalloc(st->dev,
520 switch (st->channel_modes[i]) {
560 static void ad5592r_init_scales(struct ad5592r_state *st, int vref_mV)
564 st->scale_avail[0][0] =
565 div_s64_rem(tmp, 1000000000LL, &st->scale_avail[0][1]);
566 st->scale_avail[1][0] =
567 div_s64_rem(tmp * 2, 1000000000LL, &st->scale_avail[1][1]);
574 struct ad5592r_state *st;
577 iio_dev = devm_iio_device_alloc(dev, sizeof(*st));
581 st = iio_priv(iio_dev);
582 st->dev = dev;
583 st->ops = ops;
584 st->num_channels = 8;
587 ret = devm_mutex_init(dev, &st->lock);
591 st->reg = devm_regulator_get_optional(dev, "vref");
592 if (IS_ERR(st->reg)) {
593 if ((PTR_ERR(st->reg) != -ENODEV) && dev_fwnode(dev))
594 return PTR_ERR(st->reg);
596 st->reg = NULL;
598 ret = regulator_enable(st->reg);
607 ad5592r_init_scales(st, ad5592r_get_vref(st));
609 ret = ad5592r_reset(st);
613 ret = ops->reg_write(st, AD5592R_REG_PD,
614 (st->reg == NULL) ? AD5592R_REG_PD_EN_REF : 0);
622 ret = ad5592r_set_channel_modes(st);
630 ret = ad5592r_gpio_init(st);
640 ad5592r_reset_channel_modes(st);
643 if (st->reg)
644 regulator_disable(st->reg);
653 struct ad5592r_state *st = iio_priv(iio_dev);
656 ad5592r_reset_channel_modes(st);
657 ad5592r_gpio_cleanup(st);
659 if (st->reg)
660 regulator_disable(st->reg);