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path: root/drivers/iio/adc/axp20x_adc.c
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Diffstat (limited to 'drivers/iio/adc/axp20x_adc.c')
-rw-r--r--drivers/iio/adc/axp20x_adc.c182
1 files changed, 175 insertions, 7 deletions
diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
index b487e577befb..d43c8d124a0c 100644
--- a/drivers/iio/adc/axp20x_adc.c
+++ b/drivers/iio/adc/axp20x_adc.c
@@ -5,6 +5,7 @@
* Quentin Schulz <quentin.schulz@free-electrons.com>
*/
+#include <asm/unaligned.h>
#include <linux/bitfield.h>
#include <linux/completion.h>
#include <linux/interrupt.h>
@@ -30,6 +31,8 @@
#define AXP22X_ADC_EN1_MASK (GENMASK(7, 5) | BIT(0))
+#define AXP717_ADC_EN1_MASK GENMASK(7, 0)
+
#define AXP192_GPIO30_IN_RANGE_GPIO0 BIT(0)
#define AXP192_GPIO30_IN_RANGE_GPIO1 BIT(1)
#define AXP192_GPIO30_IN_RANGE_GPIO2 BIT(2)
@@ -43,6 +46,13 @@
#define AXP22X_ADC_RATE_HZ(x) ((ilog2((x) / 100) << 6) & AXP20X_ADC_RATE_MASK)
+#define AXP717_ADC_DATA_TS 0x00
+#define AXP717_ADC_DATA_TEMP 0x01
+#define AXP717_ADC_DATA_VMID 0x02
+#define AXP717_ADC_DATA_BKUP_BATT 0x03
+
+#define AXP717_ADC_DATA_MASK GENMASK(13, 0)
+
#define AXP813_V_I_ADC_RATE_MASK GENMASK(5, 4)
#define AXP813_ADC_RATE_MASK (AXP20X_ADC_RATE_MASK | AXP813_V_I_ADC_RATE_MASK)
#define AXP813_TS_GPIO0_ADC_RATE_HZ(x) AXP20X_ADC_RATE_HZ(x)
@@ -125,6 +135,20 @@ enum axp22x_adc_channel_i {
AXP22X_BATT_DISCHRG_I,
};
+enum axp717_adc_channel_v {
+ AXP717_BATT_V = 0,
+ AXP717_TS_IN,
+ AXP717_VBUS_V,
+ AXP717_VSYS_V,
+ AXP717_DIE_TEMP_V,
+ AXP717_VMID_V = 6,
+ AXP717_BKUP_BATT_V,
+};
+
+enum axp717_adc_channel_i {
+ AXP717_BATT_CHRG_I = 5,
+};
+
enum axp813_adc_channel_v {
AXP813_TS_IN = 0,
AXP813_GPIO0_V,
@@ -179,6 +203,22 @@ static struct iio_map axp22x_maps[] = {
}, { /* sentinel */ }
};
+static struct iio_map axp717_maps[] = {
+ {
+ .consumer_dev_name = "axp20x-usb-power-supply",
+ .consumer_channel = "vbus_v",
+ .adc_channel_label = "vbus_v",
+ }, {
+ .consumer_dev_name = "axp20x-battery-power-supply",
+ .consumer_channel = "batt_v",
+ .adc_channel_label = "batt_v",
+ }, {
+ .consumer_dev_name = "axp20x-battery-power-supply",
+ .consumer_channel = "batt_chrg_i",
+ .adc_channel_label = "batt_chrg_i",
+ },
+};
+
/*
* Channels are mapped by physical system. Their channels share the same index.
* i.e. acin_i is in_current0_raw and acin_v is in_voltage0_raw.
@@ -274,6 +314,29 @@ static const struct iio_chan_spec axp22x_adc_channels[] = {
AXP22X_TS_ADC_H),
};
+/*
+ * Scale and offset is unknown for temp, ts, batt_chrg_i, vmid_v, and
+ * bkup_batt_v channels. Leaving scale and offset undefined for now.
+ */
+static const struct iio_chan_spec axp717_adc_channels[] = {
+ AXP20X_ADC_CHANNEL(AXP717_BATT_V, "batt_v", IIO_VOLTAGE,
+ AXP717_BATT_V_H),
+ AXP20X_ADC_CHANNEL(AXP717_TS_IN, "ts_v", IIO_VOLTAGE,
+ AXP717_ADC_DATA_H),
+ AXP20X_ADC_CHANNEL(AXP717_VBUS_V, "vbus_v", IIO_VOLTAGE,
+ AXP717_VBUS_V_H),
+ AXP20X_ADC_CHANNEL(AXP717_VSYS_V, "vsys_v", IIO_VOLTAGE,
+ AXP717_VSYS_V_H),
+ AXP20X_ADC_CHANNEL(AXP717_DIE_TEMP_V, "pmic_temp", IIO_TEMP,
+ AXP717_ADC_DATA_H),
+ AXP20X_ADC_CHANNEL(AXP717_BATT_CHRG_I, "batt_chrg_i", IIO_CURRENT,
+ AXP717_BATT_CHRG_I_H),
+ AXP20X_ADC_CHANNEL(AXP717_VMID_V, "vmid_v", IIO_VOLTAGE,
+ AXP717_ADC_DATA_H),
+ AXP20X_ADC_CHANNEL(AXP717_BKUP_BATT_V, "bkup_batt_v", IIO_VOLTAGE,
+ AXP717_ADC_DATA_H),
+};
+
static const struct iio_chan_spec axp813_adc_channels[] = {
{
.type = IIO_TEMP,
@@ -354,6 +417,51 @@ static int axp22x_adc_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT;
}
+static int axp717_adc_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int *val)
+{
+ struct axp20x_adc_iio *info = iio_priv(indio_dev);
+ u8 bulk_reg[2];
+ int ret;
+
+ /*
+ * A generic "ADC data" channel is used for TS, tdie, vmid,
+ * and vbackup. This channel must both first be enabled and
+ * also selected before it can be read.
+ */
+ switch (chan->channel) {
+ case AXP717_TS_IN:
+ regmap_write(info->regmap, AXP717_ADC_DATA_SEL,
+ AXP717_ADC_DATA_TS);
+ break;
+ case AXP717_DIE_TEMP_V:
+ regmap_write(info->regmap, AXP717_ADC_DATA_SEL,
+ AXP717_ADC_DATA_TEMP);
+ break;
+ case AXP717_VMID_V:
+ regmap_write(info->regmap, AXP717_ADC_DATA_SEL,
+ AXP717_ADC_DATA_VMID);
+ break;
+ case AXP717_BKUP_BATT_V:
+ regmap_write(info->regmap, AXP717_ADC_DATA_SEL,
+ AXP717_ADC_DATA_BKUP_BATT);
+ break;
+ default:
+ break;
+ }
+
+ /*
+ * All channels are 14 bits, with the first 2 bits on the high
+ * register reserved and the remaining bits as the ADC value.
+ */
+ ret = regmap_bulk_read(info->regmap, chan->address, bulk_reg, 2);
+ if (ret < 0)
+ return ret;
+
+ *val = FIELD_GET(AXP717_ADC_DATA_MASK, get_unaligned_be16(bulk_reg));
+ return IIO_VAL_INT;
+}
+
static int axp813_adc_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int *val)
{
@@ -571,6 +679,27 @@ static int axp22x_adc_scale(struct iio_chan_spec const *chan, int *val,
}
}
+static int axp717_adc_scale(struct iio_chan_spec const *chan, int *val,
+ int *val2)
+{
+ switch (chan->type) {
+ case IIO_VOLTAGE:
+ *val = 1;
+ return IIO_VAL_INT;
+
+ case IIO_CURRENT:
+ *val = 1;
+ return IIO_VAL_INT;
+
+ case IIO_TEMP:
+ *val = 100;
+ return IIO_VAL_INT;
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int axp813_adc_scale(struct iio_chan_spec const *chan, int *val,
int *val2)
{
@@ -746,6 +875,22 @@ static int axp22x_read_raw(struct iio_dev *indio_dev,
}
}
+static int axp717_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int *val,
+ int *val2, long mask)
+{
+ switch (mask) {
+ case IIO_CHAN_INFO_SCALE:
+ return axp717_adc_scale(chan, val, val2);
+
+ case IIO_CHAN_INFO_RAW:
+ return axp717_adc_raw(indio_dev, chan, val);
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int axp813_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int *val,
int *val2, long mask)
@@ -860,6 +1005,10 @@ static const struct iio_info axp22x_adc_iio_info = {
.read_raw = axp22x_read_raw,
};
+static const struct iio_info axp717_adc_iio_info = {
+ .read_raw = axp717_read_raw,
+};
+
static const struct iio_info axp813_adc_iio_info = {
.read_raw = axp813_read_raw,
};
@@ -889,7 +1038,9 @@ struct axp_data {
const struct iio_info *iio_info;
int num_channels;
struct iio_chan_spec const *channels;
+ unsigned long adc_en1;
unsigned long adc_en1_mask;
+ unsigned long adc_en2;
unsigned long adc_en2_mask;
int (*adc_rate)(struct axp20x_adc_iio *info,
int rate);
@@ -910,7 +1061,9 @@ static const struct axp_data axp20x_data = {
.iio_info = &axp20x_adc_iio_info,
.num_channels = ARRAY_SIZE(axp20x_adc_channels),
.channels = axp20x_adc_channels,
+ .adc_en1 = AXP20X_ADC_EN1,
.adc_en1_mask = AXP20X_ADC_EN1_MASK,
+ .adc_en2 = AXP20X_ADC_EN2,
.adc_en2_mask = AXP20X_ADC_EN2_MASK,
.adc_rate = axp20x_adc_rate,
.maps = axp20x_maps,
@@ -920,15 +1073,26 @@ static const struct axp_data axp22x_data = {
.iio_info = &axp22x_adc_iio_info,
.num_channels = ARRAY_SIZE(axp22x_adc_channels),
.channels = axp22x_adc_channels,
+ .adc_en1 = AXP20X_ADC_EN1,
.adc_en1_mask = AXP22X_ADC_EN1_MASK,
.adc_rate = axp22x_adc_rate,
.maps = axp22x_maps,
};
+static const struct axp_data axp717_data = {
+ .iio_info = &axp717_adc_iio_info,
+ .num_channels = ARRAY_SIZE(axp717_adc_channels),
+ .channels = axp717_adc_channels,
+ .adc_en1 = AXP717_ADC_CH_EN_CONTROL,
+ .adc_en1_mask = AXP717_ADC_EN1_MASK,
+ .maps = axp717_maps,
+};
+
static const struct axp_data axp813_data = {
.iio_info = &axp813_adc_iio_info,
.num_channels = ARRAY_SIZE(axp813_adc_channels),
.channels = axp813_adc_channels,
+ .adc_en1 = AXP20X_ADC_EN1,
.adc_en1_mask = AXP22X_ADC_EN1_MASK,
.adc_rate = axp813_adc_rate,
.maps = axp22x_maps,
@@ -938,6 +1102,7 @@ static const struct of_device_id axp20x_adc_of_match[] = {
{ .compatible = "x-powers,axp192-adc", .data = (void *)&axp192_data, },
{ .compatible = "x-powers,axp209-adc", .data = (void *)&axp20x_data, },
{ .compatible = "x-powers,axp221-adc", .data = (void *)&axp22x_data, },
+ { .compatible = "x-powers,axp717-adc", .data = (void *)&axp717_data, },
{ .compatible = "x-powers,axp813-adc", .data = (void *)&axp813_data, },
{ /* sentinel */ }
};
@@ -947,6 +1112,7 @@ static const struct platform_device_id axp20x_adc_id_match[] = {
{ .name = "axp192-adc", .driver_data = (kernel_ulong_t)&axp192_data, },
{ .name = "axp20x-adc", .driver_data = (kernel_ulong_t)&axp20x_data, },
{ .name = "axp22x-adc", .driver_data = (kernel_ulong_t)&axp22x_data, },
+ { .name = "axp717-adc", .driver_data = (kernel_ulong_t)&axp717_data, },
{ .name = "axp813-adc", .driver_data = (kernel_ulong_t)&axp813_data, },
{ /* sentinel */ },
};
@@ -988,14 +1154,16 @@ static int axp20x_probe(struct platform_device *pdev)
indio_dev->channels = info->data->channels;
/* Enable the ADCs on IP */
- regmap_write(info->regmap, AXP20X_ADC_EN1, info->data->adc_en1_mask);
+ regmap_write(info->regmap, info->data->adc_en1,
+ info->data->adc_en1_mask);
if (info->data->adc_en2_mask)
- regmap_set_bits(info->regmap, AXP20X_ADC_EN2,
+ regmap_set_bits(info->regmap, info->data->adc_en2,
info->data->adc_en2_mask);
/* Configure ADCs rate */
- info->data->adc_rate(info, 100);
+ if (info->data->adc_rate)
+ info->data->adc_rate(info, 100);
ret = iio_map_array_register(indio_dev, info->data->maps);
if (ret < 0) {
@@ -1015,10 +1183,10 @@ fail_register:
iio_map_array_unregister(indio_dev);
fail_map:
- regmap_write(info->regmap, AXP20X_ADC_EN1, 0);
+ regmap_write(info->regmap, info->data->adc_en1, 0);
if (info->data->adc_en2_mask)
- regmap_write(info->regmap, AXP20X_ADC_EN2, 0);
+ regmap_write(info->regmap, info->data->adc_en2, 0);
return ret;
}
@@ -1031,10 +1199,10 @@ static void axp20x_remove(struct platform_device *pdev)
iio_device_unregister(indio_dev);
iio_map_array_unregister(indio_dev);
- regmap_write(info->regmap, AXP20X_ADC_EN1, 0);
+ regmap_write(info->regmap, info->data->adc_en1, 0);
if (info->data->adc_en2_mask)
- regmap_write(info->regmap, AXP20X_ADC_EN2, 0);
+ regmap_write(info->regmap, info->data->adc_en2, 0);
}
static struct platform_driver axp20x_adc_driver = {
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-26 05:14:35 +0300