From: Quentin Schulz <quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
To: jic23-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
knaack.h-Mmb7MZpHnFY@public.gmane.org,
lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org,
pmeerw-jW+XmwGofnusTnJN9+BGXg@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
mark.rutland-5wv7dgnIgG8@public.gmane.org,
wens-jdAy2FN1RRM@public.gmane.org,
sre-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org,
maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org,
lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
Cc: linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
thomas.petazzoni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org,
julian.calaby-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
Quentin Schulz
<quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Subject: [PATCH v3 07/16] iio: adc: axp20x_adc: add support for AXP813 ADC
Date: Mon, 15 Jan 2018 11:33:41 +0100 [thread overview]
Message-ID: <e9e6b1e841f6b2ce66076d3a4031e3579ead8486.1516012352.git-series.quentin.schulz@free-electrons.com> (raw)
In-Reply-To: <cover.2e5329bf5475a5160e613a4eb1e1377c662ce56e.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
In-Reply-To: <cover.2e5329bf5475a5160e613a4eb1e1377c662ce56e.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
The X-Powers AXP813 PMIC is really close to what is already done for
AXP20X/AXP22X.
There are two pairs of bits to set the rate (one for Voltage and Current
measurements and one for TS/GPIO0 voltage measurements) instead of one.
The register to set the ADC rates is different from the one for
AXP20X/AXP22X.
GPIO0 can be used as an ADC (measuring Volts) unlike for AXP22X.
The scales to apply to the different inputs are unlike the ones from
AXP20X and AXP22X.
Signed-off-by: Quentin Schulz <quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
---
drivers/iio/adc/axp20x_adc.c | 123 ++++++++++++++++++++++++++++++++++++-
include/linux/mfd/axp20x.h | 2 +-
2 files changed, 125 insertions(+)
diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
index 3968053..7cdb8bc 100644
--- a/drivers/iio/adc/axp20x_adc.c
+++ b/drivers/iio/adc/axp20x_adc.c
@@ -35,8 +35,13 @@
#define AXP20X_GPIO10_IN_RANGE_GPIO1_VAL(x) (((x) & BIT(0)) << 1)
#define AXP20X_ADC_RATE_MASK GENMASK(7, 6)
+#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 AXP20X_ADC_RATE_HZ(x) ((ilog2((x) / 25) << 6) & AXP20X_ADC_RATE_MASK)
#define AXP22X_ADC_RATE_HZ(x) ((ilog2((x) / 100) << 6) & AXP20X_ADC_RATE_MASK)
+#define AXP813_TS_GPIO0_ADC_RATE_HZ(x) AXP20X_ADC_RATE_HZ(x)
+#define AXP813_V_I_ADC_RATE_HZ(x) ((ilog2((x) / 100) << 4) & AXP813_V_I_ADC_RATE_MASK)
+#define AXP813_ADC_RATE_HZ(x) (AXP20X_ADC_RATE_HZ(x) | AXP813_V_I_ADC_RATE_HZ(x))
#define AXP20X_ADC_CHANNEL(_channel, _name, _type, _reg) \
{ \
@@ -95,6 +100,12 @@ enum axp22x_adc_channel_i {
AXP22X_BATT_DISCHRG_I,
};
+enum axp813_adc_channel_v {
+ AXP813_TS_IN = 0,
+ AXP813_GPIO0_V,
+ AXP813_BATT_V,
+};
+
static struct iio_map axp20x_maps[] = {
{
.consumer_dev_name = "axp20x-usb-power-supply",
@@ -197,6 +208,25 @@ static const struct iio_chan_spec axp22x_adc_channels[] = {
AXP20X_BATT_DISCHRG_I_H),
};
+static const struct iio_chan_spec axp813_adc_channels[] = {
+ {
+ .type = IIO_TEMP,
+ .address = AXP22X_PMIC_TEMP_H,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_OFFSET),
+ .datasheet_name = "pmic_temp",
+ },
+ AXP20X_ADC_CHANNEL(AXP813_GPIO0_V, "gpio0_v", IIO_VOLTAGE,
+ AXP288_GP_ADC_H),
+ AXP20X_ADC_CHANNEL(AXP813_BATT_V, "batt_v", IIO_VOLTAGE,
+ AXP20X_BATT_V_H),
+ AXP20X_ADC_CHANNEL(AXP22X_BATT_CHRG_I, "batt_chrg_i", IIO_CURRENT,
+ AXP20X_BATT_CHRG_I_H),
+ AXP20X_ADC_CHANNEL(AXP22X_BATT_DISCHRG_I, "batt_dischrg_i", IIO_CURRENT,
+ AXP20X_BATT_DISCHRG_I_H),
+};
+
static int axp20x_adc_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int *val)
{
@@ -243,6 +273,18 @@ static int axp22x_adc_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT;
}
+static int axp813_adc_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int *val)
+{
+ struct axp20x_adc_iio *info = iio_priv(indio_dev);
+
+ *val = axp20x_read_variable_width(info->regmap, chan->address, 12);
+ if (*val < 0)
+ return *val;
+
+ return IIO_VAL_INT;
+}
+
static int axp20x_adc_scale_voltage(int channel, int *val, int *val2)
{
switch (channel) {
@@ -273,6 +315,24 @@ static int axp20x_adc_scale_voltage(int channel, int *val, int *val2)
}
}
+static int axp813_adc_scale_voltage(int channel, int *val, int *val2)
+{
+ switch (channel) {
+ case AXP813_GPIO0_V:
+ *val = 0;
+ *val2 = 800000;
+ return IIO_VAL_INT_PLUS_MICRO;
+
+ case AXP813_BATT_V:
+ *val = 1;
+ *val2 = 100000;
+ return IIO_VAL_INT_PLUS_MICRO;
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int axp20x_adc_scale_current(int channel, int *val, int *val2)
{
switch (channel) {
@@ -342,6 +402,26 @@ static int axp22x_adc_scale(struct iio_chan_spec const *chan, int *val,
}
}
+static int axp813_adc_scale(struct iio_chan_spec const *chan, int *val,
+ int *val2)
+{
+ switch (chan->type) {
+ case IIO_VOLTAGE:
+ return axp813_adc_scale_voltage(chan->channel, val, val2);
+
+ case IIO_CURRENT:
+ *val = 1;
+ return IIO_VAL_INT;
+
+ case IIO_TEMP:
+ *val = 100;
+ return IIO_VAL_INT;
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int axp20x_adc_offset_voltage(struct iio_dev *indio_dev, int channel,
int *val)
{
@@ -425,6 +505,26 @@ static int axp22x_read_raw(struct iio_dev *indio_dev,
}
}
+static int axp813_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_OFFSET:
+ *val = -2667;
+ return IIO_VAL_INT;
+
+ case IIO_CHAN_INFO_SCALE:
+ return axp813_adc_scale(chan, val, val2);
+
+ case IIO_CHAN_INFO_RAW:
+ return axp813_adc_raw(indio_dev, chan, val);
+
+ default:
+ return -EINVAL;
+ }
+}
+
static int axp20x_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int val, int val2,
long mask)
@@ -470,6 +570,10 @@ static const struct iio_info axp22x_adc_iio_info = {
.read_raw = axp22x_read_raw,
};
+static const struct iio_info axp813_adc_iio_info = {
+ .read_raw = axp813_read_raw,
+};
+
static int axp20x_adc_rate(struct axp20x_adc_iio *info, int rate)
{
return regmap_update_bits(info->regmap, AXP20X_ADC_RATE,
@@ -484,6 +588,13 @@ static int axp22x_adc_rate(struct axp20x_adc_iio *info, int rate)
AXP22X_ADC_RATE_HZ(rate));
}
+static int axp813_adc_rate(struct axp20x_adc_iio *info, int rate)
+{
+ return regmap_update_bits(info->regmap, AXP813_ADC_RATE,
+ AXP813_ADC_RATE_MASK,
+ AXP813_ADC_RATE_HZ(rate));
+}
+
struct axp_data {
const struct iio_info *iio_info;
int num_channels;
@@ -515,9 +626,20 @@ static const struct axp_data axp22x_data = {
.maps = axp22x_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_mask = AXP22X_ADC_EN1_MASK,
+ .adc_rate = axp813_adc_rate,
+ .adc_en2 = false,
+ .maps = axp22x_maps,
+};
+
static const struct of_device_id axp20x_adc_of_match[] = {
{ .compatible = "x-powers,axp209-adc", .data = (void *)&axp20x_data, },
{ .compatible = "x-powers,axp221-adc", .data = (void *)&axp22x_data, },
+ { .compatible = "x-powers,axp813-adc", .data = (void *)&axp813_data, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, axp20x_adc_of_match);
@@ -525,6 +647,7 @@ MODULE_DEVICE_TABLE(of, axp20x_adc_of_match);
static const struct platform_device_id axp20x_adc_id_match[] = {
{ .name = "axp20x-adc", .driver_data = (kernel_ulong_t)&axp20x_data, },
{ .name = "axp22x-adc", .driver_data = (kernel_ulong_t)&axp22x_data, },
+ { .name = "axp813-adc", .driver_data = (kernel_ulong_t)&axp813_data, },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(platform, axp20x_adc_id_match);
diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
index 080798f..82bf774 100644
--- a/include/linux/mfd/axp20x.h
+++ b/include/linux/mfd/axp20x.h
@@ -266,6 +266,8 @@ enum axp20x_variants {
#define AXP288_RT_BATT_V_H 0xa0
#define AXP288_RT_BATT_V_L 0xa1
+#define AXP813_ADC_RATE 0x85
+
/* Fuel Gauge */
#define AXP288_FG_RDC1_REG 0xba
#define AXP288_FG_RDC0_REG 0xbb
--
git-series 0.9.1
next prev parent reply other threads:[~2018-01-15 10:33 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-15 10:33 [PATCH v3 00/16] add support for AXP813 ADC and battery power supply Quentin Schulz
[not found] ` <cover.2e5329bf5475a5160e613a4eb1e1377c662ce56e.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-15 10:33 ` [PATCH v3 01/16] iio: adc: axp20x_adc: put ADC rate setting in a per-variant function Quentin Schulz
[not found] ` <9488159b43c4cc8418afa9d1562d972c4631cb02.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-21 12:13 ` Jonathan Cameron
2018-01-15 10:33 ` [PATCH v3 02/16] dt-bindings: iio: adc: add binding for X-Powers AXP PMICs ADC Quentin Schulz
2018-01-21 12:18 ` Jonathan Cameron
2018-01-15 10:33 ` [PATCH v3 03/16] iio: adc: axp20x_adc: make it possible to probe from DT Quentin Schulz
2018-01-21 12:22 ` Jonathan Cameron
2018-01-15 10:33 ` [PATCH v3 04/16] ARM: dtsi: axp209: add node for ADC Quentin Schulz
[not found] ` <ea299dca30bb3d0413d35717522643b5a00e731c.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-23 15:33 ` Chen-Yu Tsai
2018-01-15 10:33 ` [PATCH v3 05/16] ARM: dtsi: axp22x: " Quentin Schulz
[not found] ` <c73ef705e9feacde577de66355a2033b419ca004.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-23 15:33 ` Chen-Yu Tsai
2018-01-15 10:33 ` [PATCH v3 06/16] mfd: axp20x: make AXP209/22x cells probe their ADC via DT Quentin Schulz
[not found] ` <8901f920fb8d84f8bf0cb2832f560c78bffc0392.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-23 9:54 ` Lee Jones
2018-01-23 15:32 ` Chen-Yu Tsai
2018-01-15 10:33 ` Quentin Schulz [this message]
2018-01-21 12:26 ` [PATCH v3 07/16] iio: adc: axp20x_adc: add support for AXP813 ADC Jonathan Cameron
2018-01-22 8:22 ` Quentin Schulz
2018-01-28 8:12 ` Jonathan Cameron
2018-01-15 10:33 ` [PATCH v3 08/16] ARM: dtsi: axp81x: add node for ADC Quentin Schulz
[not found] ` <eb8f23f57dc9d7d7c87c5eea2f85e90470e27c83.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-23 15:33 ` Chen-Yu Tsai
2018-01-15 10:33 ` [PATCH v3 09/16] mfd: axp20x: probe axp20x_adc driver for AXP813 Quentin Schulz
[not found] ` <d5792ed6e1e989dde3c9ecdd018286109dfc101d.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-23 9:53 ` Lee Jones
2018-01-23 15:32 ` Chen-Yu Tsai
2018-01-15 10:33 ` [PATCH v3 10/16] power: supply: axp20x_battery: use data structure instead of ID for Quentin Schulz
[not found] ` <c4129842e1254289ebb3ad1755879a3722bac1cf.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-23 15:39 ` Chen-Yu Tsai
2018-01-15 10:33 ` [PATCH v3 11/16] dt-bindings: power: supply: axp20x: add AXP813 battery DT binding Quentin Schulz
[not found] ` <7b53727c33207f4b7ae36218c99abfb86876e716.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-23 15:43 ` Chen-Yu Tsai
2018-01-15 10:33 ` [PATCH v3 12/16] power: supply: axp20x_battery: add support for AXP813 Quentin Schulz
[not found] ` <42b2e555083abbab43e48362175dc9c2eeeedf3c.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-23 15:47 ` Chen-Yu Tsai
2018-01-15 10:33 ` [PATCH v3 13/16] mfd: axp20x: add battery power supply cell " Quentin Schulz
[not found] ` <76855b0d3b9eb75e00eb6a058db5b4a33b0558c6.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-23 15:50 ` Chen-Yu Tsai
2018-01-15 10:33 ` [PATCH v3 14/16] ARM: dtsi: axp81x: add battery power supply subnode Quentin Schulz
[not found] ` <9c045de8dcee9a71803978855762e272efdc41d3.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-23 15:50 ` Chen-Yu Tsai
2018-01-15 10:33 ` [PATCH v3 15/16] ARM: dtsi: sun8i: a711: enable " Quentin Schulz
2018-01-23 15:51 ` [linux-sunxi] " Chen-Yu Tsai
2018-01-15 10:33 ` [PATCH v3 16/16] ARM: dtsi: axp81x: remove IP name from DT node name Quentin Schulz
[not found] ` <6e881951c43b8829cd509c3db06fa5520f71e779.1516012352.git-series.quentin.schulz-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2018-01-23 15:51 ` Chen-Yu Tsai
2018-01-23 15:55 ` [PATCH v3 00/16] add support for AXP813 ADC and battery power supply Chen-Yu Tsai
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