iio: health/afe440x: Remove channel names
These AFEs have 4 ADC mesuring stages (called LED2, ALED2, LED1, and ALED1 in the datasheet), we map these as channels, these stages can serve different purposes depending on the application. For instance the AFE4404 has an additional LED (LED3), this LED can be timed to be active during stage 2 (or anystage, but the datasheet describes this case and the name of the stage reflects this use). This ability is used further in upcoming parts that tie the front-end gain and the LED timings together. For these reasons we remove explicit naming the channels. Without channel names it is best that the index numbers are in order to match the stage number, reorder the channel numbers. Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Andrew F. Davis
Jonathan Cameron
parent
606c7e6c1b
commit
24b9dea764
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@ -8,38 +8,35 @@ Description:
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Transimpedance Amplifier. Y is 1 for Rf1 and Cf1, Y is 2 for
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Rf2 and Cf2 values.
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What: /sys/bus/iio/devices/iio:deviceX/in_intensity_ledY_raw
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/sys/bus/iio/devices/iio:deviceX/in_intensity_ledY_ambient_raw
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Date: December 2015
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What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_raw
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Date: May 2016
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get measured values from the ADC for these stages. Y is the
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specific LED number. The values are expressed in 24-bit twos
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complement.
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specific stage number corresponding to datasheet stage names
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as follows:
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1 -> LED2
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2 -> ALED2/LED3
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3 -> LED1
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4 -> ALED1/LED4
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Note that channels 5 and 6 represent LED2-ALED2 and LED1-ALED1
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respectively which simply helper channels containing the
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calculated difference in the value of stage 1 - 2 and 3 - 4.
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The values are expressed in 24-bit twos complement.
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What: /sys/bus/iio/devices/iio:deviceX/in_intensity_ledY-ledY_ambient_raw
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Date: December 2015
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get differential values from the ADC for these stages. Y is the
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specific LED number. The values are expressed in 24-bit twos
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complement for the specified LEDs.
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What: /sys/bus/iio/devices/iio:deviceX/out_current_ledY_offset
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/sys/bus/iio/devices/iio:deviceX/out_current_ledY_ambient_offset
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Date: December 2015
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What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_offset
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Date: May 2016
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get and set the offset cancellation DAC setting for these
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stages. The values are expressed in 5-bit sign-magnitude.
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What: /sys/bus/iio/devices/iio:deviceX/out_current_ledY_raw
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Date: December 2015
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What: /sys/bus/iio/devices/iio:deviceX/out_currentY_raw
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Date: May 2016
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get and set the LED current for the specified LED. Y is the
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specific LED number.
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Get and set the LED current for the specified LED active during
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this stage. Y is the specific stage number.
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@ -121,38 +121,38 @@ struct afe4403_data {
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};
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enum afe4403_chan_id {
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LED2 = 1,
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ALED2,
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LED1,
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ALED1,
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LED2,
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ALED2,
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LED1_ALED1,
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LED2_ALED2,
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LED1_ALED1,
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ILED1,
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ILED2,
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};
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static const struct afe440x_reg_info afe4403_reg_info[] = {
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[LED1] = AFE440X_REG_INFO(AFE440X_LED1VAL, 0, NULL),
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[ALED1] = AFE440X_REG_INFO(AFE440X_ALED1VAL, 0, NULL),
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[LED2] = AFE440X_REG_INFO(AFE440X_LED2VAL, 0, NULL),
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[ALED2] = AFE440X_REG_INFO(AFE440X_ALED2VAL, 0, NULL),
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[LED1_ALED1] = AFE440X_REG_INFO(AFE440X_LED1_ALED1VAL, 0, NULL),
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[LED1] = AFE440X_REG_INFO(AFE440X_LED1VAL, 0, NULL),
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[ALED1] = AFE440X_REG_INFO(AFE440X_ALED1VAL, 0, NULL),
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[LED2_ALED2] = AFE440X_REG_INFO(AFE440X_LED2_ALED2VAL, 0, NULL),
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[LED1_ALED1] = AFE440X_REG_INFO(AFE440X_LED1_ALED1VAL, 0, NULL),
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[ILED1] = AFE440X_REG_INFO(AFE440X_LEDCNTRL, 0, AFE440X_LEDCNTRL_LED1),
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[ILED2] = AFE440X_REG_INFO(AFE440X_LEDCNTRL, 0, AFE440X_LEDCNTRL_LED2),
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};
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static const struct iio_chan_spec afe4403_channels[] = {
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/* ADC values */
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AFE440X_INTENSITY_CHAN(LED1, "led1", 0),
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AFE440X_INTENSITY_CHAN(ALED1, "led1_ambient", 0),
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AFE440X_INTENSITY_CHAN(LED2, "led2", 0),
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AFE440X_INTENSITY_CHAN(ALED2, "led2_ambient", 0),
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AFE440X_INTENSITY_CHAN(LED1_ALED1, "led1-led1_ambient", 0),
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AFE440X_INTENSITY_CHAN(LED2_ALED2, "led2-led2_ambient", 0),
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AFE440X_INTENSITY_CHAN(LED2, 0),
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AFE440X_INTENSITY_CHAN(ALED2, 0),
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AFE440X_INTENSITY_CHAN(LED1, 0),
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AFE440X_INTENSITY_CHAN(ALED1, 0),
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AFE440X_INTENSITY_CHAN(LED2_ALED2, 0),
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AFE440X_INTENSITY_CHAN(LED1_ALED1, 0),
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/* LED current */
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AFE440X_CURRENT_CHAN(ILED1, "led1"),
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AFE440X_CURRENT_CHAN(ILED2, "led2"),
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AFE440X_CURRENT_CHAN(ILED1),
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AFE440X_CURRENT_CHAN(ILED2),
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};
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static const struct afe440x_val_table afe4403_res_table[] = {
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@ -122,24 +122,24 @@ struct afe4404_data {
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};
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enum afe4404_chan_id {
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LED2 = 1,
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ALED2,
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LED1,
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ALED1,
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LED2,
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ALED2,
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LED1_ALED1,
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LED2_ALED2,
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LED1_ALED1,
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ILED1,
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ILED2,
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ILED3,
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};
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static const struct afe440x_reg_info afe4404_reg_info[] = {
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[LED1] = AFE440X_REG_INFO(AFE440X_LED1VAL, AFE4404_OFFDAC, AFE4404_OFFDAC_CURR_LED1),
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[ALED1] = AFE440X_REG_INFO(AFE440X_ALED1VAL, AFE4404_OFFDAC, AFE4404_OFFDAC_CURR_ALED1),
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[LED2] = AFE440X_REG_INFO(AFE440X_LED2VAL, AFE4404_OFFDAC, AFE4404_OFFDAC_CURR_LED2),
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[ALED2] = AFE440X_REG_INFO(AFE440X_ALED2VAL, AFE4404_OFFDAC, AFE4404_OFFDAC_CURR_ALED2),
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[LED1_ALED1] = AFE440X_REG_INFO(AFE440X_LED1_ALED1VAL, 0, NULL),
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[LED1] = AFE440X_REG_INFO(AFE440X_LED1VAL, AFE4404_OFFDAC, AFE4404_OFFDAC_CURR_LED1),
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[ALED1] = AFE440X_REG_INFO(AFE440X_ALED1VAL, AFE4404_OFFDAC, AFE4404_OFFDAC_CURR_ALED1),
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[LED2_ALED2] = AFE440X_REG_INFO(AFE440X_LED2_ALED2VAL, 0, NULL),
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[LED1_ALED1] = AFE440X_REG_INFO(AFE440X_LED1_ALED1VAL, 0, NULL),
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[ILED1] = AFE440X_REG_INFO(AFE440X_LEDCNTRL, 0, AFE4404_LEDCNTRL_ILED1),
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[ILED2] = AFE440X_REG_INFO(AFE440X_LEDCNTRL, 0, AFE4404_LEDCNTRL_ILED2),
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[ILED3] = AFE440X_REG_INFO(AFE440X_LEDCNTRL, 0, AFE4404_LEDCNTRL_ILED3),
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@ -147,16 +147,16 @@ static const struct afe440x_reg_info afe4404_reg_info[] = {
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static const struct iio_chan_spec afe4404_channels[] = {
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/* ADC values */
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AFE440X_INTENSITY_CHAN(LED1, "led1", BIT(IIO_CHAN_INFO_OFFSET)),
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AFE440X_INTENSITY_CHAN(ALED1, "led1_ambient", BIT(IIO_CHAN_INFO_OFFSET)),
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AFE440X_INTENSITY_CHAN(LED2, "led2", BIT(IIO_CHAN_INFO_OFFSET)),
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AFE440X_INTENSITY_CHAN(ALED2, "led2_ambient", BIT(IIO_CHAN_INFO_OFFSET)),
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AFE440X_INTENSITY_CHAN(LED1_ALED1, "led1-led1_ambient", 0),
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AFE440X_INTENSITY_CHAN(LED2_ALED2, "led2-led2_ambient", 0),
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AFE440X_INTENSITY_CHAN(LED2, BIT(IIO_CHAN_INFO_OFFSET)),
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AFE440X_INTENSITY_CHAN(ALED2, BIT(IIO_CHAN_INFO_OFFSET)),
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AFE440X_INTENSITY_CHAN(LED1, BIT(IIO_CHAN_INFO_OFFSET)),
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AFE440X_INTENSITY_CHAN(ALED1, BIT(IIO_CHAN_INFO_OFFSET)),
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AFE440X_INTENSITY_CHAN(LED2_ALED2, 0),
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AFE440X_INTENSITY_CHAN(LED1_ALED1, 0),
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/* LED current */
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AFE440X_CURRENT_CHAN(ILED1, "led1"),
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AFE440X_CURRENT_CHAN(ILED2, "led2"),
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AFE440X_CURRENT_CHAN(ILED3, "led3"),
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AFE440X_CURRENT_CHAN(ILED1),
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AFE440X_CURRENT_CHAN(ILED2),
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AFE440X_CURRENT_CHAN(ILED3),
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};
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static const struct afe440x_val_table afe4404_res_table[] = {
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@ -103,7 +103,7 @@ struct afe440x_reg_info {
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.mask = _sm ## _MASK, \
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}
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#define AFE440X_INTENSITY_CHAN(_index, _name, _mask) \
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#define AFE440X_INTENSITY_CHAN(_index, _mask) \
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{ \
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.type = IIO_INTENSITY, \
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.channel = _index, \
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@ -115,20 +115,20 @@ struct afe440x_reg_info {
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.storagebits = 32, \
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.endianness = IIO_CPU, \
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}, \
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.extend_name = _name, \
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
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_mask, \
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.indexed = true, \
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}
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#define AFE440X_CURRENT_CHAN(_index, _name) \
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#define AFE440X_CURRENT_CHAN(_index) \
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{ \
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.type = IIO_CURRENT, \
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.channel = _index, \
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.address = _index, \
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.scan_index = -1, \
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.extend_name = _name, \
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
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BIT(IIO_CHAN_INFO_SCALE), \
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.indexed = true, \
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.output = true, \
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}
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