-static const char *const stm32_quadrature_modes[] = {
- "channel_A",
- "channel_B",
- "quadrature",
-};
-
-static int stm32_set_quadrature_mode(struct iio_dev *indio_dev,
- const struct iio_chan_spec *chan,
- unsigned int mode)
-{
- struct stm32_timer_trigger *priv = iio_priv(indio_dev);
-
- regmap_update_bits(priv->regmap, TIM_SMCR, TIM_SMCR_SMS, mode + 1);
-
- return 0;
-}
-
-static int stm32_get_quadrature_mode(struct iio_dev *indio_dev,
- const struct iio_chan_spec *chan)
-{
- struct stm32_timer_trigger *priv = iio_priv(indio_dev);
- u32 smcr;
- int mode;
-
- regmap_read(priv->regmap, TIM_SMCR, &smcr);
- mode = (smcr & TIM_SMCR_SMS) - 1;
- if ((mode < 0) || (mode > ARRAY_SIZE(stm32_quadrature_modes)))
- return -EINVAL;
-
- return mode;
-}
-
-static const struct iio_enum stm32_quadrature_mode_enum = {
- .items = stm32_quadrature_modes,
- .num_items = ARRAY_SIZE(stm32_quadrature_modes),
- .set = stm32_set_quadrature_mode,
- .get = stm32_get_quadrature_mode
-};
-
-static const char *const stm32_count_direction_states[] = {
- "up",
- "down"
-};
-
-static int stm32_set_count_direction(struct iio_dev *indio_dev,
- const struct iio_chan_spec *chan,
- unsigned int dir)
-{
- struct stm32_timer_trigger *priv = iio_priv(indio_dev);
- u32 val;
- int mode;
-
- /* In encoder mode, direction is RO (given by TI1/TI2 signals) */
- regmap_read(priv->regmap, TIM_SMCR, &val);
- mode = (val & TIM_SMCR_SMS) - 1;
- if ((mode >= 0) || (mode < ARRAY_SIZE(stm32_quadrature_modes)))
- return -EBUSY;
-
- return regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_DIR,
- dir ? TIM_CR1_DIR : 0);
-}
-
-static int stm32_get_count_direction(struct iio_dev *indio_dev,
- const struct iio_chan_spec *chan)
-{
- struct stm32_timer_trigger *priv = iio_priv(indio_dev);
- u32 cr1;
-
- regmap_read(priv->regmap, TIM_CR1, &cr1);
-
- return ((cr1 & TIM_CR1_DIR) ? 1 : 0);
-}
-
-static const struct iio_enum stm32_count_direction_enum = {
- .items = stm32_count_direction_states,
- .num_items = ARRAY_SIZE(stm32_count_direction_states),
- .set = stm32_set_count_direction,
- .get = stm32_get_count_direction
-};
-