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Commit 16922ffe authored by Jonathan Cameron's avatar Jonathan Cameron
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Merge branch 'ib-ab8500-5.4-rc1' into HEAD 

Immutable branch as considerable overlap with mfd, power and hwmon.
parents 686191a7 a77fc111
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Documentation/devicetree/bindings/mfd/ab8500.txt
View file @ 16922ffe
......@@ -69,6 +69,18 @@ Required child device properties:
- compatible : "stericsson,ab8500-[bm|btemp|charger|fg|gpadc|gpio|ponkey|
pwm|regulator|rtc|sysctrl|usb]";
A few child devices require ADC channels from the GPADC node. Those follow the
standard bindings from iio/iio-bindings.txt and iio/adc/adc.txt
abx500-temp : io-channels "aux1" and "aux2" for measuring external
temperatures.
ab8500-fg : io-channel "main_bat_v" for measuring main battery voltage,
ab8500-btemp : io-channels "btemp_ball" and "bat_ctrl" for measuring the
battery voltage.
ab8500-charger : io-channels "main_charger_v", "main_charger_c", "vbus_v",
"usb_charger_c" for measuring voltage and current of the
different charging supplies.
Optional child device properties:
- interrupts : contains the device IRQ(s) using the 2-cell format (see above)
- interrupt-names : contains names of IRQ resource in the order in which they were
......@@ -102,8 +114,115 @@ ab8500 {
39 0x4>;
interrupt-names = "HW_CONV_END", "SW_CONV_END";
vddadc-supply = <&ab8500_ldo_tvout_reg>;
#address-cells = <1>;
#size-cells = <0>;
#io-channel-cells = <1>;
/* GPADC channels */
bat_ctrl: channel@1 {
reg = <0x01>;
};
btemp_ball: channel@2 {
reg = <0x02>;
};
main_charger_v: channel@3 {
reg = <0x03>;
};
acc_detect1: channel@4 {
reg = <0x04>;
};
acc_detect2: channel@5 {
reg = <0x05>;
};
adc_aux1: channel@6 {
reg = <0x06>;
};
adc_aux2: channel@7 {
reg = <0x07>;
};
main_batt_v: channel@8 {
reg = <0x08>;
};
vbus_v: channel@9 {
reg = <0x09>;
};
main_charger_c: channel@a {
reg = <0x0a>;
};
usb_charger_c: channel@b {
reg = <0x0b>;
};
bk_bat_v: channel@c {
reg = <0x0c>;
};
die_temp: channel@d {
reg = <0x0d>;
};
usb_id: channel@e {
reg = <0x0e>;
};
xtal_temp: channel@12 {
reg = <0x12>;
};
vbat_true_meas: channel@13 {
reg = <0x13>;
};
bat_ctrl_and_ibat: channel@1c {
reg = <0x1c>;
};
vbat_meas_and_ibat: channel@1d {
reg = <0x1d>;
};
vbat_true_meas_and_ibat: channel@1e {
reg = <0x1e>;
};
bat_temp_and_ibat: channel@1f {
reg = <0x1f>;
};
};
ab8500_temp {
compatible = "stericsson,abx500-temp";
io-channels = <&gpadc 0x06>,
<&gpadc 0x07>;
io-channel-name = "aux1", "aux2";
};
ab8500_battery: ab8500_battery {
stericsson,battery-type = "LIPO";
thermistor-on-batctrl;
};
ab8500_fg {
compatible = "stericsson,ab8500-fg";
battery = <&ab8500_battery>;
io-channels = <&gpadc 0x08>;
io-channel-name = "main_bat_v";
};
ab8500_btemp {
compatible = "stericsson,ab8500-btemp";
battery = <&ab8500_battery>;
io-channels = <&gpadc 0x02>,
<&gpadc 0x01>;
io-channel-name = "btemp_ball",
"bat_ctrl";
};
ab8500_charger {
compatible = "stericsson,ab8500-charger";
battery = <&ab8500_battery>;
vddadc-supply = <&ab8500_ldo_tvout_reg>;
io-channels = <&gpadc 0x03>,
<&gpadc 0x0a>,
<&gpadc 0x09>,
<&gpadc 0x0b>;
io-channel-name = "main_charger_v",
"main_charger_c",
"vbus_v",
"usb_charger_c";
};
ab8500-usb {
compatible = "stericsson,ab8500-usb";
interrupts = < 90 0x4
......
MAINTAINERS
View file @ 16922ffe
......@@ -2005,6 +2005,7 @@ F: drivers/dma/ste_dma40*
F: drivers/hwspinlock/u8500_hsem.c
F: drivers/i2c/busses/i2c-nomadik.c
F: drivers/i2c/busses/i2c-stu300.c
F: drivers/iio/adc/ab8500-gpadc.c
F: drivers/mfd/ab3100*
F: drivers/mfd/ab8500*
F: drivers/mfd/abx500*
......
drivers/hwmon/Kconfig
View file @ 16922ffe
......@@ -40,7 +40,8 @@ comment "Native drivers"
config SENSORS_AB8500
tristate "AB8500 thermal monitoring"
depends on AB8500_GPADC && AB8500_BM
depends on AB8500_GPADC && AB8500_BM && (IIO = y)
default n
help
If you say yes here you get support for the thermal sensor part
of the AB8500 chip. The driver includes thermal management for
......
drivers/hwmon/ab8500.c
View file @ 16922ffe
......@@ -17,20 +17,24 @@
#include <linux/hwmon-sysfs.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
#include <linux/mfd/abx500/ab8500-gpadc.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/power/ab8500.h>
#include <linux/reboot.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/iio/consumer.h>
#include "abx500.h"
#define DEFAULT_POWER_OFF_DELAY (HZ * 10)
#define THERMAL_VCC 1800
#define PULL_UP_RESISTOR 47000
/* Number of monitored sensors should not greater than NUM_SENSORS */
#define NUM_MONITORED_SENSORS 4
#define AB8500_SENSOR_AUX1 0
#define AB8500_SENSOR_AUX2 1
#define AB8500_SENSOR_BTEMP_BALL 2
#define AB8500_SENSOR_BAT_CTRL 3
#define NUM_MONITORED_SENSORS 4
struct ab8500_gpadc_cfg {
const struct abx500_res_to_temp *temp_tbl;
......@@ -40,7 +44,8 @@ struct ab8500_gpadc_cfg {
};
struct ab8500_temp {
struct ab8500_gpadc *gpadc;
struct iio_channel *aux1;
struct iio_channel *aux2;
struct ab8500_btemp *btemp;
struct delayed_work power_off_work;
struct ab8500_gpadc_cfg cfg;
......@@ -82,15 +87,21 @@ static int ab8500_read_sensor(struct abx500_temp *data, u8 sensor, int *temp)
int voltage, ret;
struct ab8500_temp *ab8500_data = data->plat_data;
if (sensor == BAT_CTRL) {
*temp = ab8500_btemp_get_batctrl_temp(ab8500_data->btemp);
} else if (sensor == BTEMP_BALL) {
if (sensor == AB8500_SENSOR_BTEMP_BALL) {
*temp = ab8500_btemp_get_temp(ab8500_data->btemp);
} else {
voltage = ab8500_gpadc_convert(ab8500_data->gpadc, sensor);
if (voltage < 0)
return voltage;
} else if (sensor == AB8500_SENSOR_BAT_CTRL) {
*temp = ab8500_btemp_get_batctrl_temp(ab8500_data->btemp);
} else if (sensor == AB8500_SENSOR_AUX1) {
ret = iio_read_channel_processed(ab8500_data->aux1, &voltage);
if (ret < 0)
return ret;
ret = ab8500_voltage_to_temp(&ab8500_data->cfg, voltage, temp);
if (ret < 0)
return ret;
} else if (sensor == AB8500_SENSOR_AUX2) {
ret = iio_read_channel_processed(ab8500_data->aux2, &voltage);
if (ret < 0)
return ret;
ret = ab8500_voltage_to_temp(&ab8500_data->cfg, voltage, temp);
if (ret < 0)
return ret;
......@@ -164,10 +175,6 @@ int abx500_hwmon_init(struct abx500_temp *data)
if (!ab8500_data)
return -ENOMEM;
ab8500_data->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
if (IS_ERR(ab8500_data->gpadc))
return PTR_ERR(ab8500_data->gpadc);
ab8500_data->btemp = ab8500_btemp_get();
if (IS_ERR(ab8500_data->btemp))
return PTR_ERR(ab8500_data->btemp);
......@@ -181,15 +188,25 @@ int abx500_hwmon_init(struct abx500_temp *data)
ab8500_data->cfg.tbl_sz = ab8500_temp_tbl_a_size;
data->plat_data = ab8500_data;
ab8500_data->aux1 = devm_iio_channel_get(&data->pdev->dev, "aux1");
if (IS_ERR(ab8500_data->aux1)) {
if (PTR_ERR(ab8500_data->aux1) == -ENODEV)
return -EPROBE_DEFER;
dev_err(&data->pdev->dev, "failed to get AUX1 ADC channel\n");
return PTR_ERR(ab8500_data->aux1);
}
ab8500_data->aux2 = devm_iio_channel_get(&data->pdev->dev, "aux2");
if (IS_ERR(ab8500_data->aux2)) {
if (PTR_ERR(ab8500_data->aux2) == -ENODEV)
return -EPROBE_DEFER;
dev_err(&data->pdev->dev, "failed to get AUX2 ADC channel\n");
return PTR_ERR(ab8500_data->aux2);
}
/*
* ADC_AUX1 and ADC_AUX2, connected to external NTC
* BTEMP_BALL and BAT_CTRL, fixed usage
*/
data->gpadc_addr[0] = ADC_AUX1;
data->gpadc_addr[1] = ADC_AUX2;
data->gpadc_addr[2] = BTEMP_BALL;
data->gpadc_addr[3] = BAT_CTRL;
data->gpadc_addr[0] = AB8500_SENSOR_AUX1;
data->gpadc_addr[1] = AB8500_SENSOR_AUX2;
data->gpadc_addr[2] = AB8500_SENSOR_BTEMP_BALL;
data->gpadc_addr[3] = AB8500_SENSOR_BAT_CTRL;
data->monitored_sensors = NUM_MONITORED_SENSORS;
data->ops.read_sensor = ab8500_read_sensor;
......
drivers/iio/adc/Kconfig
View file @ 16922ffe
......@@ -6,6 +6,16 @@
menu "Analog to digital converters"
config AB8500_GPADC
bool "ST-Ericsson AB8500 GPADC driver"
depends on AB8500_CORE && REGULATOR_AB8500
default y
help
AB8500 Analog Baseband, mixed signal integrated circuit GPADC
(General Purpose Analog to Digital Converter) driver used to monitor
internal voltages, convert accessory and battery, AC (charger, mains)
and USB voltages integral to the U8500 platform.
config AD_SIGMA_DELTA
tristate
select IIO_BUFFER
......
drivers/iio/adc/Makefile
View file @ 16922ffe
......@@ -4,6 +4,7 @@
#
# When adding new entries keep the list in alphabetical order
obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o
obj-$(CONFIG_AD_SIGMA_DELTA) += ad_sigma_delta.o
obj-$(CONFIG_AD7124) += ad7124.o
obj-$(CONFIG_AD7266) += ad7266.o
......
drivers/mfd/ab8500-gpadc.c → drivers/iio/adc/ab8500-gpadc.c
View file @ 16922ffe
......@@ -6,8 +6,26 @@
* Author: Daniel Willerud <daniel.willerud@stericsson.com>
* Author: Johan Palsson <johan.palsson@stericsson.com>
* Author: M'boumba Cedric Madianga
* Author: Linus Walleij <linus.walleij@linaro.org>
*
* AB8500 General Purpose ADC driver. The AB8500 uses reference voltages:
* VinVADC, and VADC relative to GND to do its job. It monitors main and backup
* battery voltages, AC (mains) voltage, USB cable voltage, as well as voltages
* representing the temperature of the chip die and battery, accessory
* detection by resistance measurements using relative voltages and GSM burst
* information.
*
* Some of the voltages are measured on external pins on the IC, such as
* battery temperature or "ADC aux" 1 and 2. Other voltages are internal rails
* from other parts of the ASIC such as main charger voltage, main and battery
* backup voltage or USB VBUS voltage. For this reason drivers for other
* parts of the system are required to obtain handles to the ADC to do work
* for them and the IIO driver provides arbitration among these consumers.
*/
#include <linux/init.h>
#include <linux/bits.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
......@@ -16,22 +34,82 @@
#include <linux/platform_device.h>
#include <linux/completion.h>
#include <linux/regulator/consumer.h>
#include <linux/random.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-gpadc.h>
/*
* GPADC register offsets
* Bank : 0x0A
*/
/* GPADC register offsets and bit definitions */
#define AB8500_GPADC_CTRL1_REG 0x00
/* GPADC control register 1 bits */
#define AB8500_GPADC_CTRL1_DISABLE 0x00
#define AB8500_GPADC_CTRL1_ENABLE BIT(0)
#define AB8500_GPADC_CTRL1_TRIG_ENA BIT(1)
#define AB8500_GPADC_CTRL1_START_SW_CONV BIT(2)
#define AB8500_GPADC_CTRL1_BTEMP_PULL_UP BIT(3)
/* 0 = use rising edge, 1 = use falling edge */
#define AB8500_GPADC_CTRL1_TRIG_EDGE BIT(4)
/* 0 = use VTVOUT, 1 = use VRTC as pull-up supply for battery temp NTC */
#define AB8500_GPADC_CTRL1_PUPSUPSEL BIT(5)
#define AB8500_GPADC_CTRL1_BUF_ENA BIT(6)
#define AB8500_GPADC_CTRL1_ICHAR_ENA BIT(7)
#define AB8500_GPADC_CTRL2_REG 0x01
#define AB8500_GPADC_CTRL3_REG 0x02
/*
* GPADC control register 2 and 3 bits
* the bit layout is the same for SW and HW conversion set-up
*/
#define AB8500_GPADC_CTRL2_AVG_1 0x00
#define AB8500_GPADC_CTRL2_AVG_4 BIT(5)
#define AB8500_GPADC_CTRL2_AVG_8 BIT(6)
#define AB8500_GPADC_CTRL2_AVG_16 (BIT(5) | BIT(6))
enum ab8500_gpadc_channel {
AB8500_GPADC_CHAN_UNUSED = 0x00,
AB8500_GPADC_CHAN_BAT_CTRL = 0x01,
AB8500_GPADC_CHAN_BAT_TEMP = 0x02,
/* This is not used on AB8505 */
AB8500_GPADC_CHAN_MAIN_CHARGER = 0x03,
AB8500_GPADC_CHAN_ACC_DET_1 = 0x04,
AB8500_GPADC_CHAN_ACC_DET_2 = 0x05,
AB8500_GPADC_CHAN_ADC_AUX_1 = 0x06,
AB8500_GPADC_CHAN_ADC_AUX_2 = 0x07,
AB8500_GPADC_CHAN_VBAT_A = 0x08,
AB8500_GPADC_CHAN_VBUS = 0x09,
AB8500_GPADC_CHAN_MAIN_CHARGER_CURRENT = 0x0a,
AB8500_GPADC_CHAN_USB_CHARGER_CURRENT = 0x0b,
AB8500_GPADC_CHAN_BACKUP_BAT = 0x0c,
/* Only on AB8505 */
AB8505_GPADC_CHAN_DIE_TEMP = 0x0d,
AB8500_GPADC_CHAN_ID = 0x0e,
AB8500_GPADC_CHAN_INTERNAL_TEST_1 = 0x0f,
AB8500_GPADC_CHAN_INTERNAL_TEST_2 = 0x10,
AB8500_GPADC_CHAN_INTERNAL_TEST_3 = 0x11,
/* FIXME: Applicable to all ASIC variants? */
AB8500_GPADC_CHAN_XTAL_TEMP = 0x12,
AB8500_GPADC_CHAN_VBAT_TRUE_MEAS = 0x13,
/* FIXME: Doesn't seem to work with pure AB8500 */
AB8500_GPADC_CHAN_BAT_CTRL_AND_IBAT = 0x1c,
AB8500_GPADC_CHAN_VBAT_MEAS_AND_IBAT = 0x1d,
AB8500_GPADC_CHAN_VBAT_TRUE_MEAS_AND_IBAT = 0x1e,
AB8500_GPADC_CHAN_BAT_TEMP_AND_IBAT = 0x1f,
/*
* Virtual channel used only for ibat conversion to ampere.
* Battery current conversion (ibat) cannot be requested as a
* single conversion but it is always requested in combination
* with other input requests.
*/
AB8500_GPADC_CHAN_IBAT_VIRTUAL = 0xFF,
};
#define AB8500_GPADC_AUTO_TIMER_REG 0x03
#define AB8500_GPADC_STAT_REG 0x04
#define AB8500_GPADC_STAT_BUSY BIT(0)
#define AB8500_GPADC_MANDATAL_REG 0x05
#define AB8500_GPADC_MANDATAH_REG 0x06
#define AB8500_GPADC_AUTODATAL_REG 0x07
......@@ -61,309 +139,261 @@
#define AB8540_GPADC_OTP4_REG_6 0x39
#define AB8540_GPADC_OTP4_REG_5 0x3A
/* gpadc constants */
#define EN_VINTCORE12 0x04
#define EN_VTVOUT 0x02
#define EN_GPADC 0x01
#define DIS_GPADC 0x00
#define AVG_1 0x00
#define AVG_4 0x20
#define AVG_8 0x40
#define AVG_16 0x60
#define ADC_SW_CONV 0x04
#define EN_ICHAR 0x80
#define BTEMP_PULL_UP 0x08
#define EN_BUF 0x40
#define DIS_ZERO 0x00
#define GPADC_BUSY 0x01
#define EN_FALLING 0x10
#define EN_TRIG_EDGE 0x02
#define EN_VBIAS_XTAL_TEMP 0x02
#define AB8540_GPADC_DIS_ZERO 0x00
#define AB8540_GPADC_EN_VBIAS_XTAL_TEMP 0x02
/* GPADC constants from AB8500 spec, UM0836 */
#define ADC_RESOLUTION 1024
#define ADC_CH_BTEMP_MIN 0
#define ADC_CH_BTEMP_MAX 1350
#define ADC_CH_DIETEMP_MIN 0
#define ADC_CH_DIETEMP_MAX 1350
#define ADC_CH_CHG_V_MIN 0
#define ADC_CH_CHG_V_MAX 20030
#define ADC_CH_ACCDET2_MIN 0
#define ADC_CH_ACCDET2_MAX 2500
#define ADC_CH_VBAT_MIN 2300
#define ADC_CH_VBAT_MAX 4800
#define ADC_CH_CHG_I_MIN 0
#define ADC_CH_CHG_I_MAX 1500
#define ADC_CH_BKBAT_MIN 0
#define ADC_CH_BKBAT_MAX 3200
#define AB8500_ADC_RESOLUTION 1024
#define AB8500_ADC_CH_BTEMP_MIN 0
#define AB8500_ADC_CH_BTEMP_MAX 1350
#define AB8500_ADC_CH_DIETEMP_MIN 0
#define AB8500_ADC_CH_DIETEMP_MAX 1350
#define AB8500_ADC_CH_CHG_V_MIN 0
#define AB8500_ADC_CH_CHG_V_MAX 20030
#define AB8500_ADC_CH_ACCDET2_MIN 0
#define AB8500_ADC_CH_ACCDET2_MAX 2500
#define AB8500_ADC_CH_VBAT_MIN 2300
#define AB8500_ADC_CH_VBAT_MAX 4800
#define AB8500_ADC_CH_CHG_I_MIN 0
#define AB8500_ADC_CH_CHG_I_MAX 1500
#define AB8500_ADC_CH_BKBAT_MIN 0
#define AB8500_ADC_CH_BKBAT_MAX 3200
/* GPADC constants from AB8540 spec */
#define ADC_CH_IBAT_MIN (-6000) /* mA range measured by ADC for ibat */
#define ADC_CH_IBAT_MAX 6000
#define ADC_CH_IBAT_MIN_V (-60) /* mV range measured by ADC for ibat */
#define ADC_CH_IBAT_MAX_V 60
#define IBAT_VDROP_L (-56) /* mV */
#define IBAT_VDROP_H 56
#define AB8500_ADC_CH_IBAT_MIN (-6000) /* mA range measured by ADC for ibat */
#define AB8500_ADC_CH_IBAT_MAX 6000
#define AB8500_ADC_CH_IBAT_MIN_V (-60) /* mV range measured by ADC for ibat */
#define AB8500_ADC_CH_IBAT_MAX_V 60
#define AB8500_GPADC_IBAT_VDROP_L (-56) /* mV */
#define AB8500_GPADC_IBAT_VDROP_H 56
/* This is used to not lose precision when dividing to get gain and offset */
#define CALIB_SCALE 1000
#define AB8500_GPADC_CALIB_SCALE 1000
/*
* Number of bits shift used to not lose precision
* when dividing to get ibat gain.
*/
#define CALIB_SHIFT_IBAT 20
#define AB8500_GPADC_CALIB_SHIFT_IBAT 20
/* Time in ms before disabling regulator */
#define GPADC_AUDOSUSPEND_DELAY 1
#define AB8500_GPADC_AUTOSUSPEND_DELAY 1
#define CONVERSION_TIME 500 /* ms */
#define AB8500_GPADC_CONVERSION_TIME 500 /* ms */
enum cal_channels {
ADC_INPUT_VMAIN = 0,
ADC_INPUT_BTEMP,
ADC_INPUT_VBAT,
ADC_INPUT_IBAT,
NBR_CAL_INPUTS,
enum ab8500_cal_channels {
AB8500_CAL_VMAIN = 0,
AB8500_CAL_BTEMP,
AB8500_CAL_VBAT,
AB8500_CAL_IBAT,
AB8500_CAL_NR,
};
/**
* struct adc_cal_data - Table for storing gain and offset for the calibrated
* ADC channels
* @gain: Gain of the ADC channel
* @offset: Offset of the ADC channel
* struct ab8500_adc_cal_data - Table for storing gain and offset for the
* calibrated ADC channels
* @gain: Gain of the ADC channel
* @offset: Offset of the ADC channel
* @otp_calib_hi: Calibration from OTP
* @otp_calib_lo: Calibration from OTP
*/
struct adc_cal_data {
struct ab8500_adc_cal_data {
s64 gain;
s64 offset;
u16 otp_calib_hi;
u16 otp_calib_lo;
};
/**
* struct ab8500_gpadc_chan_info - per-channel GPADC info
* @name: name of the channel
* @id: the internal AB8500 ID number for the channel
* @hardware_control: indicate that we want to use hardware ADC control
* on this channel, the default is software ADC control. Hardware control
* is normally only used to test the battery voltage during GSM bursts
* and needs a hardware trigger on the GPADCTrig pin of the ASIC.
* @falling_edge: indicate that we want to trigger on falling edge
* rather than rising edge, rising edge is the default
* @avg_sample: how many samples to average: must be 1, 4, 8 or 16.
* @trig_timer: how long to wait for the trigger, in 32kHz periods:
* 0 .. 255 periods
*/
struct ab8500_gpadc_chan_info {
const char *name;
u8 id;
bool hardware_control;
bool falling_edge;
u8 avg_sample;
u8 trig_timer;
};
/**
* struct ab8500_gpadc - AB8500 GPADC device information
* @dev: pointer to the struct device
* @node: a list of AB8500 GPADCs, hence prepared for
reentrance
* @parent: pointer to the struct ab8500
* @ab8500_gpadc_complete: pointer to the struct completion, to indicate
* the completion of gpadc conversion
* @ab8500_gpadc_lock: structure of type mutex
* @regu: pointer to the struct regulator
* @irq_sw: interrupt number that is used by gpadc for Sw
* conversion
* @irq_hw: interrupt number that is used by gpadc for Hw
* conversion
* @cal_data array of ADC calibration data structs
* @dev: pointer to the containing device
* @ab8500: pointer to the parent AB8500 device
* @chans: internal per-channel information container
* @nchans: number of channels
* @complete: pointer to the completion that indicates
* the completion of an gpadc conversion cycle
* @vddadc: pointer to the regulator supplying VDDADC
* @irq_sw: interrupt number that is used by gpadc for software ADC conversion
* @irq_hw: interrupt number that is used by gpadc for hardware ADC conversion
* @cal_data: array of ADC calibration data structs
*/
struct ab8500_gpadc {
struct device *dev;
struct list_head node;
struct ab8500 *parent;
struct completion ab8500_gpadc_complete;
struct mutex ab8500_gpadc_lock;
struct regulator *regu;
struct ab8500 *ab8500;
struct ab8500_gpadc_chan_info *chans;
unsigned int nchans;
struct completion complete;
struct regulator *vddadc;
int irq_sw;
int irq_hw;
struct adc_cal_data cal_data[NBR_CAL_INPUTS];
struct ab8500_adc_cal_data cal_data[AB8500_CAL_NR];
};
static LIST_HEAD(ab8500_gpadc_list);
/**
* ab8500_gpadc_get() - returns a reference to the primary AB8500 GPADC
* (i.e. the first GPADC in the instance list)
*/
struct ab8500_gpadc *ab8500_gpadc_get(char *name)
static struct ab8500_gpadc_chan_info *
ab8500_gpadc_get_channel(struct ab8500_gpadc *gpadc, u8 chan)
{
struct ab8500_gpadc *gpadc;
struct ab8500_gpadc_chan_info *ch;
int i;
list_for_each_entry(gpadc, &ab8500_gpadc_list, node) {
if (!strcmp(name, dev_name(gpadc->dev)))
return gpadc;
for (i = 0; i < gpadc->nchans; i++) {
ch = &gpadc->chans[i];
if (ch->id == chan)
break;
}
if (i == gpadc->nchans)
return NULL;
return ERR_PTR(-ENOENT);
return ch;
}
EXPORT_SYMBOL(ab8500_gpadc_get);
/**
* ab8500_gpadc_ad_to_voltage() - Convert a raw ADC value to a voltage
* @gpadc: GPADC instance
* @ch: the sampled channel this raw value is coming from
* @ad_value: the raw value
*/
int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc, u8 channel,
int ad_value)
static int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc,
enum ab8500_gpadc_channel ch,
int ad_value)
{
int res;
switch (channel) {
case MAIN_CHARGER_V:
/* For some reason we don't have calibrated data */
if (!gpadc->cal_data[ADC_INPUT_VMAIN].gain) {
res = ADC_CH_CHG_V_MIN + (ADC_CH_CHG_V_MAX -
ADC_CH_CHG_V_MIN) * ad_value /
ADC_RESOLUTION;
switch (ch) {
case AB8500_GPADC_CHAN_MAIN_CHARGER:
/* No calibration data available: just interpolate */
if (!gpadc->cal_data[AB8500_CAL_VMAIN].gain) {
res = AB8500_ADC_CH_CHG_V_MIN + (AB8500_ADC_CH_CHG_V_MAX -
AB8500_ADC_CH_CHG_V_MIN) * ad_value /
AB8500_ADC_RESOLUTION;
break;
}
/* Here we can use the calibrated data */
res = (int) (ad_value * gpadc->cal_data[ADC_INPUT_VMAIN].gain +
gpadc->cal_data[ADC_INPUT_VMAIN].offset) / CALIB_SCALE;
/* Here we can use calibration */
res = (int) (ad_value * gpadc->cal_data[AB8500_CAL_VMAIN].gain +
gpadc->cal_data[AB8500_CAL_VMAIN].offset) / AB8500_GPADC_CALIB_SCALE;
break;
case XTAL_TEMP:
case BAT_CTRL:
case BTEMP_BALL:
case ACC_DETECT1:
case ADC_AUX1:
case ADC_AUX2:
/* For some reason we don't have calibrated data */
if (!gpadc->cal_data[ADC_INPUT_BTEMP].gain) {
res = ADC_CH_BTEMP_MIN + (ADC_CH_BTEMP_MAX -
ADC_CH_BTEMP_MIN) * ad_value /
ADC_RESOLUTION;
case AB8500_GPADC_CHAN_BAT_CTRL:
case AB8500_GPADC_CHAN_BAT_TEMP:
case AB8500_GPADC_CHAN_ACC_DET_1:
case AB8500_GPADC_CHAN_ADC_AUX_1:
case AB8500_GPADC_CHAN_ADC_AUX_2:
case AB8500_GPADC_CHAN_XTAL_TEMP:
/* No calibration data available: just interpolate */
if (!gpadc->cal_data[AB8500_CAL_BTEMP].gain) {
res = AB8500_ADC_CH_BTEMP_MIN + (AB8500_ADC_CH_BTEMP_MAX -
AB8500_ADC_CH_BTEMP_MIN) * ad_value /
AB8500_ADC_RESOLUTION;
break;
}
/* Here we can use the calibrated data */
res = (int) (ad_value * gpadc->cal_data[ADC_INPUT_BTEMP].gain +
gpadc->cal_data[ADC_INPUT_BTEMP].offset) / CALIB_SCALE;
/* Here we can use calibration */
res = (int) (ad_value * gpadc->cal_data[AB8500_CAL_BTEMP].gain +
gpadc->cal_data[AB8500_CAL_BTEMP].offset) / AB8500_GPADC_CALIB_SCALE;
break;
case MAIN_BAT_V:
case VBAT_TRUE_MEAS:
/* For some reason we don't have calibrated data */
if (!gpadc->cal_data[ADC_INPUT_VBAT].gain) {
res = ADC_CH_VBAT_MIN + (ADC_CH_VBAT_MAX -
ADC_CH_VBAT_MIN) * ad_value /
ADC_RESOLUTION;
case AB8500_GPADC_CHAN_VBAT_A:
case AB8500_GPADC_CHAN_VBAT_TRUE_MEAS:
/* No calibration data available: just interpolate */
if (!gpadc->cal_data[AB8500_CAL_VBAT].gain) {
res = AB8500_ADC_CH_VBAT_MIN + (AB8500_ADC_CH_VBAT_MAX -
AB8500_ADC_CH_VBAT_MIN) * ad_value /
AB8500_ADC_RESOLUTION;
break;
}
/* Here we can use the calibrated data */
res = (int) (ad_value * gpadc->cal_data[ADC_INPUT_VBAT].gain +
gpadc->cal_data[ADC_INPUT_VBAT].offset) / CALIB_SCALE;
/* Here we can use calibration */
res = (int) (ad_value * gpadc->cal_data[AB8500_CAL_VBAT].gain +
gpadc->cal_data[AB8500_CAL_VBAT].offset) / AB8500_GPADC_CALIB_SCALE;
break;
case DIE_TEMP:
res = ADC_CH_DIETEMP_MIN +
(ADC_CH_DIETEMP_MAX - ADC_CH_DIETEMP_MIN) * ad_value /
ADC_RESOLUTION;
case AB8505_GPADC_CHAN_DIE_TEMP:
res = AB8500_ADC_CH_DIETEMP_MIN +
(AB8500_ADC_CH_DIETEMP_MAX - AB8500_ADC_CH_DIETEMP_MIN) * ad_value /
AB8500_ADC_RESOLUTION;
break;
case ACC_DETECT2:
res = ADC_CH_ACCDET2_MIN +
(ADC_CH_ACCDET2_MAX - ADC_CH_ACCDET2_MIN) * ad_value /
ADC_RESOLUTION;
case AB8500_GPADC_CHAN_ACC_DET_2:
res = AB8500_ADC_CH_ACCDET2_MIN +
(AB8500_ADC_CH_ACCDET2_MAX - AB8500_ADC_CH_ACCDET2_MIN) * ad_value /
AB8500_ADC_RESOLUTION;
break;
case VBUS_V:
res = ADC_CH_CHG_V_MIN +
(ADC_CH_CHG_V_MAX - ADC_CH_CHG_V_MIN) * ad_value /
ADC_RESOLUTION;
case AB8500_GPADC_CHAN_VBUS:
res = AB8500_ADC_CH_CHG_V_MIN +
(AB8500_ADC_CH_CHG_V_MAX - AB8500_ADC_CH_CHG_V_MIN) * ad_value /
AB8500_ADC_RESOLUTION;
break;
case MAIN_CHARGER_C:
case USB_CHARGER_C:
res = ADC_CH_CHG_I_MIN +
(ADC_CH_CHG_I_MAX - ADC_CH_CHG_I_MIN) * ad_value /
ADC_RESOLUTION;
case AB8500_GPADC_CHAN_MAIN_CHARGER_CURRENT:
case AB8500_GPADC_CHAN_USB_CHARGER_CURRENT:
res = AB8500_ADC_CH_CHG_I_MIN +
(AB8500_ADC_CH_CHG_I_MAX - AB8500_ADC_CH_CHG_I_MIN) * ad_value /
AB8500_ADC_RESOLUTION;
break;
case BK_BAT_V:
res = ADC_CH_BKBAT_MIN +
(ADC_CH_BKBAT_MAX - ADC_CH_BKBAT_MIN) * ad_value /
ADC_RESOLUTION;
case AB8500_GPADC_CHAN_BACKUP_BAT:
res = AB8500_ADC_CH_BKBAT_MIN +
(AB8500_ADC_CH_BKBAT_MAX - AB8500_ADC_CH_BKBAT_MIN) * ad_value /
AB8500_ADC_RESOLUTION;
break;
case IBAT_VIRTUAL_CHANNEL:
/* For some reason we don't have calibrated data */
if (!gpadc->cal_data[ADC_INPUT_IBAT].gain) {
res = ADC_CH_IBAT_MIN + (ADC_CH_IBAT_MAX -
ADC_CH_IBAT_MIN) * ad_value /
ADC_RESOLUTION;
case AB8500_GPADC_CHAN_IBAT_VIRTUAL:
/* No calibration data available: just interpolate */
if (!gpadc->cal_data[AB8500_CAL_IBAT].gain) {
res = AB8500_ADC_CH_IBAT_MIN + (AB8500_ADC_CH_IBAT_MAX -
AB8500_ADC_CH_IBAT_MIN) * ad_value /
AB8500_ADC_RESOLUTION;
break;
}
/* Here we can use the calibrated data */
res = (int) (ad_value * gpadc->cal_data[ADC_INPUT_IBAT].gain +
gpadc->cal_data[ADC_INPUT_IBAT].offset)
>> CALIB_SHIFT_IBAT;
/* Here we can use calibration */
res = (int) (ad_value * gpadc->cal_data[AB8500_CAL_IBAT].gain +
gpadc->cal_data[AB8500_CAL_IBAT].offset)
>> AB8500_GPADC_CALIB_SHIFT_IBAT;
break;
default:
dev_err(gpadc->dev,
"unknown channel, not possible to convert\n");
"unknown channel ID: %d, not possible to convert\n",
ch);
res = -EINVAL;
break;
}
return res;
}
EXPORT_SYMBOL(ab8500_gpadc_ad_to_voltage);
/**
* ab8500_gpadc_sw_hw_convert() - gpadc conversion
* @channel: analog channel to be converted to digital data
* @avg_sample: number of ADC sample to average
* @trig_egde: selected ADC trig edge
* @trig_timer: selected ADC trigger delay timer
* @conv_type: selected conversion type (HW or SW conversion)
*
* This function converts the selected analog i/p to digital
* data.
*/
int ab8500_gpadc_sw_hw_convert(struct ab8500_gpadc *gpadc, u8 channel,
u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type)
{
int ad_value;
int voltage;
ad_value = ab8500_gpadc_read_raw(gpadc, channel, avg_sample,
trig_edge, trig_timer, conv_type);
/* On failure retry a second time */
if (ad_value < 0)
ad_value = ab8500_gpadc_read_raw(gpadc, channel, avg_sample,
trig_edge, trig_timer, conv_type);
if (ad_value < 0) {
dev_err(gpadc->dev, "GPADC raw value failed ch: %d\n",
channel);
return ad_value;
}
voltage = ab8500_gpadc_ad_to_voltage(gpadc, channel, ad_value);
if (voltage < 0)
dev_err(gpadc->dev,
"GPADC to voltage conversion failed ch: %d AD: 0x%x\n",
channel, ad_value);
return voltage;
}
EXPORT_SYMBOL(ab8500_gpadc_sw_hw_convert);
/**
* ab8500_gpadc_read_raw() - gpadc read
* @channel: analog channel to be read
* @avg_sample: number of ADC sample to average
* @trig_edge: selected trig edge
* @trig_timer: selected ADC trigger delay timer
* @conv_type: selected conversion type (HW or SW conversion)
*
* This function obtains the raw ADC value for an hardware conversion,
* this then needs to be converted by calling ab8500_gpadc_ad_to_voltage()
*/
int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type)
{
return ab8500_gpadc_double_read_raw(gpadc, channel, avg_sample,
trig_edge, trig_timer, conv_type,
NULL);
return res;
}
int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type,
int *ibat)
static int ab8500_gpadc_read(struct ab8500_gpadc *gpadc,
const struct ab8500_gpadc_chan_info *ch,
int *ibat)
{
int ret;
int looplimit = 0;
unsigned long completion_timeout;
u8 val, low_data, high_data, low_data2, high_data2;
u8 val_reg1 = 0;
u8 val;
u8 low_data, high_data, low_data2, high_data2;
u8 ctrl1;
u8 ctrl23;
unsigned int delay_min = 0;
unsigned int delay_max = 0;
u8 data_low_addr, data_high_addr;
......@@ -371,14 +401,13 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
if (!gpadc)
return -ENODEV;
/* check if convertion is supported */
if ((gpadc->irq_sw < 0) && (conv_type == ADC_SW))
/* check if conversion is supported */
if ((gpadc->irq_sw <= 0) && !ch->hardware_control)
return -ENOTSUPP;
if ((gpadc->irq_hw < 0) && (conv_type == ADC_HW))
if ((gpadc->irq_hw <= 0) && ch->hardware_control)
return -ENOTSUPP;
mutex_lock(&gpadc->ab8500_gpadc_lock);
/* Enable VTVout LDO this is required for GPADC */
/* Enable vddadc by grabbing PM runtime */
pm_runtime_get_sync(gpadc->dev);
/* Check if ADC is not busy, lock and proceed */
......@@ -387,44 +416,45 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
AB8500_GPADC, AB8500_GPADC_STAT_REG, &val);
if (ret < 0)
goto out;
if (!(val & GPADC_BUSY))
if (!(val & AB8500_GPADC_STAT_BUSY))
break;
msleep(20);
} while (++looplimit < 10);
if (looplimit >= 10 && (val & GPADC_BUSY)) {
if (looplimit >= 10 && (val & AB8500_GPADC_STAT_BUSY)) {
dev_err(gpadc->dev, "gpadc_conversion: GPADC busy");
ret = -EINVAL;
goto out;
}
/* Enable GPADC */
val_reg1 |= EN_GPADC;
ctrl1 = AB8500_GPADC_CTRL1_ENABLE;
/* Select the channel source and set average samples */
switch (avg_sample) {
case SAMPLE_1:
val = channel | AVG_1;
switch (ch->avg_sample) {
case 1:
ctrl23 = ch->id | AB8500_GPADC_CTRL2_AVG_1;
break;
case SAMPLE_4:
val = channel | AVG_4;
case 4:
ctrl23 = ch->id | AB8500_GPADC_CTRL2_AVG_4;
break;
case SAMPLE_8:
val = channel | AVG_8;
case 8:
ctrl23 = ch->id | AB8500_GPADC_CTRL2_AVG_8;
break;
default:
val = channel | AVG_16;
ctrl23 = ch->id | AB8500_GPADC_CTRL2_AVG_16;
break;
}
if (conv_type == ADC_HW) {
if (ch->hardware_control) {
ret = abx500_set_register_interruptible(gpadc->dev,
AB8500_GPADC, AB8500_GPADC_CTRL3_REG, val);
val_reg1 |= EN_TRIG_EDGE;
if (trig_edge)
val_reg1 |= EN_FALLING;
} else
AB8500_GPADC, AB8500_GPADC_CTRL3_REG, ctrl23);
ctrl1 |= AB8500_GPADC_CTRL1_TRIG_ENA;
if (ch->falling_edge)
ctrl1 |= AB8500_GPADC_CTRL1_TRIG_EDGE;
} else {
ret = abx500_set_register_interruptible(gpadc->dev,
AB8500_GPADC, AB8500_GPADC_CTRL2_REG, val);
AB8500_GPADC, AB8500_GPADC_CTRL2_REG, ctrl23);
}
if (ret < 0) {
dev_err(gpadc->dev,
"gpadc_conversion: set avg samples failed\n");
......@@ -436,31 +466,33 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
* charging current sense if it needed, ABB 3.0 needs some special
* treatment too.
*/
switch (channel) {
case MAIN_CHARGER_C:
case USB_CHARGER_C:
val_reg1 |= EN_BUF | EN_ICHAR;
switch (ch->id) {
case AB8500_GPADC_CHAN_MAIN_CHARGER_CURRENT:
case AB8500_GPADC_CHAN_USB_CHARGER_CURRENT:
ctrl1 |= AB8500_GPADC_CTRL1_BUF_ENA |
AB8500_GPADC_CTRL1_ICHAR_ENA;
break;
case BTEMP_BALL:
if (!is_ab8500_2p0_or_earlier(gpadc->parent)) {
val_reg1 |= EN_BUF | BTEMP_PULL_UP;
case AB8500_GPADC_CHAN_BAT_TEMP:
if (!is_ab8500_2p0_or_earlier(gpadc->ab8500)) {
ctrl1 |= AB8500_GPADC_CTRL1_BUF_ENA |
AB8500_GPADC_CTRL1_BTEMP_PULL_UP;
/*
* Delay might be needed for ABB8500 cut 3.0, if not,
* remove when hardware will be availible
*/
* Delay might be needed for ABB8500 cut 3.0, if not,
* remove when hardware will be available
*/
delay_min = 1000; /* Delay in micro seconds */
delay_max = 10000; /* large range optimises sleepmode */
break;
}
/* Intentional fallthrough */
/* Fall through */
default:
val_reg1 |= EN_BUF;
ctrl1 |= AB8500_GPADC_CTRL1_BUF_ENA;
break;
}
/* Write configuration to register */
/* Write configuration to control register 1 */
ret = abx500_set_register_interruptible(gpadc->dev,
AB8500_GPADC, AB8500_GPADC_CTRL1_REG, val_reg1);
AB8500_GPADC, AB8500_GPADC_CTRL1_REG, ctrl1);
if (ret < 0) {
dev_err(gpadc->dev,
"gpadc_conversion: set Control register failed\n");
......@@ -470,10 +502,11 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
if (delay_min != 0)
usleep_range(delay_min, delay_max);
if (conv_type == ADC_HW) {
if (ch->hardware_control) {
/* Set trigger delay timer */
ret = abx500_set_register_interruptible(gpadc->dev,
AB8500_GPADC, AB8500_GPADC_AUTO_TIMER_REG, trig_timer);
AB8500_GPADC, AB8500_GPADC_AUTO_TIMER_REG,
ch->trig_timer);
if (ret < 0) {
dev_err(gpadc->dev,
"gpadc_conversion: trig timer failed\n");
......@@ -486,19 +519,20 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
/* Start SW conversion */
ret = abx500_mask_and_set_register_interruptible(gpadc->dev,
AB8500_GPADC, AB8500_GPADC_CTRL1_REG,
ADC_SW_CONV, ADC_SW_CONV);
AB8500_GPADC_CTRL1_START_SW_CONV,
AB8500_GPADC_CTRL1_START_SW_CONV);
if (ret < 0) {
dev_err(gpadc->dev,
"gpadc_conversion: start s/w conv failed\n");
goto out;
}
completion_timeout = msecs_to_jiffies(CONVERSION_TIME);
completion_timeout = msecs_to_jiffies(AB8500_GPADC_CONVERSION_TIME);
data_low_addr = AB8500_GPADC_MANDATAL_REG;
data_high_addr = AB8500_GPADC_MANDATAH_REG;
}
/* wait for completion of conversion */
if (!wait_for_completion_timeout(&gpadc->ab8500_gpadc_complete,
/* Wait for completion of conversion */
if (!wait_for_completion_timeout(&gpadc->complete,
completion_timeout)) {
dev_err(gpadc->dev,
"timeout didn't receive GPADC conv interrupt\n");
......@@ -510,24 +544,26 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
ret = abx500_get_register_interruptible(gpadc->dev,
AB8500_GPADC, data_low_addr, &low_data);
if (ret < 0) {
dev_err(gpadc->dev, "gpadc_conversion: read low data failed\n");
dev_err(gpadc->dev,
"gpadc_conversion: read low data failed\n");
goto out;
}
ret = abx500_get_register_interruptible(gpadc->dev,
AB8500_GPADC, data_high_addr, &high_data);
if (ret < 0) {
dev_err(gpadc->dev, "gpadc_conversion: read high data failed\n");
dev_err(gpadc->dev,
"gpadc_conversion: read high data failed\n");
goto out;
}
/* Check if double convertion is required */
if ((channel == BAT_CTRL_AND_IBAT) ||
(channel == VBAT_MEAS_AND_IBAT) ||
(channel == VBAT_TRUE_MEAS_AND_IBAT) ||
(channel == BAT_TEMP_AND_IBAT)) {
/* Check if double conversion is required */
if ((ch->id == AB8500_GPADC_CHAN_BAT_CTRL_AND_IBAT) ||
(ch->id == AB8500_GPADC_CHAN_VBAT_MEAS_AND_IBAT) ||
(ch->id == AB8500_GPADC_CHAN_VBAT_TRUE_MEAS_AND_IBAT) ||
(ch->id == AB8500_GPADC_CHAN_BAT_TEMP_AND_IBAT)) {
if (conv_type == ADC_HW) {
if (ch->hardware_control) {
/* not supported */
ret = -ENOTSUPP;
dev_err(gpadc->dev,
......@@ -564,18 +600,16 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
/* Disable GPADC */
ret = abx500_set_register_interruptible(gpadc->dev, AB8500_GPADC,
AB8500_GPADC_CTRL1_REG, DIS_GPADC);
AB8500_GPADC_CTRL1_REG, AB8500_GPADC_CTRL1_DISABLE);
if (ret < 0) {
dev_err(gpadc->dev, "gpadc_conversion: disable gpadc failed\n");
goto out;
}
/* Disable VTVout LDO this is required for GPADC */
/* This eventually drops the regulator */
pm_runtime_mark_last_busy(gpadc->dev);
pm_runtime_put_autosuspend(gpadc->dev);
mutex_unlock(&gpadc->ab8500_gpadc_lock);
return (high_data << 8) | low_data;
out:
......@@ -586,30 +620,29 @@ int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
* seems to timeout when waiting for an interrupt.. Not seen in V2.0
*/
(void) abx500_set_register_interruptible(gpadc->dev, AB8500_GPADC,
AB8500_GPADC_CTRL1_REG, DIS_GPADC);
AB8500_GPADC_CTRL1_REG, AB8500_GPADC_CTRL1_DISABLE);
pm_runtime_put(gpadc->dev);
mutex_unlock(&gpadc->ab8500_gpadc_lock);
dev_err(gpadc->dev,
"gpadc_conversion: Failed to AD convert channel %d\n", channel);
"gpadc_conversion: Failed to AD convert channel %d\n", ch->id);
return ret;
}
EXPORT_SYMBOL(ab8500_gpadc_read_raw);
/**
* ab8500_bm_gpadcconvend_handler() - isr for gpadc conversion completion
* @irq: irq number
* @data: pointer to the data passed during request irq
* @irq: irq number
* @data: pointer to the data passed during request irq
*
* This is a interrupt service routine for gpadc conversion completion.
* Notifies the gpadc completion is completed and the converted raw value
* can be read from the registers.
* Returns IRQ status(IRQ_HANDLED)
*/
static irqreturn_t ab8500_bm_gpadcconvend_handler(int irq, void *_gpadc)
static irqreturn_t ab8500_bm_gpadcconvend_handler(int irq, void *data)
{
struct ab8500_gpadc *gpadc = _gpadc;
struct ab8500_gpadc *gpadc = data;
complete(&gpadc->ab8500_gpadc_complete);
complete(&gpadc->complete);
return IRQ_HANDLED;
}
......@@ -642,17 +675,19 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
int vbat_high, vbat_low;
int ibat_high, ibat_low;
s64 V_gain, V_offset, V2A_gain, V2A_offset;
struct ab8500 *ab8500;
ab8500 = gpadc->parent;
/* First we read all OTP registers and store the error code */
for (i = 0; i < ARRAY_SIZE(otp_cal_regs); i++) {
ret[i] = abx500_get_register_interruptible(gpadc->dev,
AB8500_OTP_EMUL, otp_cal_regs[i], &gpadc_cal[i]);
if (ret[i] < 0)
if (ret[i] < 0) {
/* Continue anyway: maybe the other registers are OK */
dev_err(gpadc->dev, "%s: read otp reg 0x%02x failed\n",
__func__, otp_cal_regs[i]);
} else {
/* Put this in the entropy pool as device-unique */
add_device_randomness(&ret[i], sizeof(ret[i]));
}
}
/*
......@@ -723,25 +758,25 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
* vbat_low: Vin = 2380mV / ADC ideal code = 33
*/
if (is_ab8540(ab8500)) {
if (is_ab8540(gpadc->ab8500)) {
/* Calculate gain and offset for VMAIN if all reads succeeded*/
if (!(ret[1] < 0 || ret[2] < 0)) {
vmain_high = (((gpadc_cal[1] & 0xFF) << 2) |
((gpadc_cal[2] & 0xC0) >> 6));
vmain_low = ((gpadc_cal[2] & 0x3E) >> 1);
gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi =
gpadc->cal_data[AB8500_CAL_VMAIN].otp_calib_hi =
(u16)vmain_high;
gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo =
gpadc->cal_data[AB8500_CAL_VMAIN].otp_calib_lo =
(u16)vmain_low;
gpadc->cal_data[ADC_INPUT_VMAIN].gain = CALIB_SCALE *
gpadc->cal_data[AB8500_CAL_VMAIN].gain = AB8500_GPADC_CALIB_SCALE *
(19500 - 315) / (vmain_high - vmain_low);
gpadc->cal_data[ADC_INPUT_VMAIN].offset = CALIB_SCALE *
19500 - (CALIB_SCALE * (19500 - 315) /
gpadc->cal_data[AB8500_CAL_VMAIN].offset = AB8500_GPADC_CALIB_SCALE *
19500 - (AB8500_GPADC_CALIB_SCALE * (19500 - 315) /
(vmain_high - vmain_low)) * vmain_high;
} else {
gpadc->cal_data[ADC_INPUT_VMAIN].gain = 0;
gpadc->cal_data[AB8500_CAL_VMAIN].gain = 0;
}
/* Read IBAT calibration Data */
......@@ -762,40 +797,36 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
ibat_low = (((gpadc_otp4[1] & 0x01) << 5) |
((gpadc_otp4[2] & 0xF8) >> 3));
gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_hi =
gpadc->cal_data[AB8500_CAL_IBAT].otp_calib_hi =
(u16)ibat_high;
gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_lo =
gpadc->cal_data[AB8500_CAL_IBAT].otp_calib_lo =
(u16)ibat_low;
V_gain = ((IBAT_VDROP_H - IBAT_VDROP_L)
<< CALIB_SHIFT_IBAT) / (ibat_high - ibat_low);
V_gain = ((AB8500_GPADC_IBAT_VDROP_H - AB8500_GPADC_IBAT_VDROP_L)
<< AB8500_GPADC_CALIB_SHIFT_IBAT) / (ibat_high - ibat_low);
V_offset = (IBAT_VDROP_H << CALIB_SHIFT_IBAT) -
(((IBAT_VDROP_H - IBAT_VDROP_L) <<
CALIB_SHIFT_IBAT) / (ibat_high - ibat_low))
V_offset = (AB8500_GPADC_IBAT_VDROP_H << AB8500_GPADC_CALIB_SHIFT_IBAT) -
(((AB8500_GPADC_IBAT_VDROP_H - AB8500_GPADC_IBAT_VDROP_L) <<
AB8500_GPADC_CALIB_SHIFT_IBAT) / (ibat_high - ibat_low))
* ibat_high;
/*
* Result obtained is in mV (at a scale factor),
* we need to calculate gain and offset to get mA
*/
V2A_gain = (ADC_CH_IBAT_MAX - ADC_CH_IBAT_MIN)/
(ADC_CH_IBAT_MAX_V - ADC_CH_IBAT_MIN_V);
V2A_offset = ((ADC_CH_IBAT_MAX_V * ADC_CH_IBAT_MIN -
ADC_CH_IBAT_MAX * ADC_CH_IBAT_MIN_V)
<< CALIB_SHIFT_IBAT)
/ (ADC_CH_IBAT_MAX_V - ADC_CH_IBAT_MIN_V);
gpadc->cal_data[ADC_INPUT_IBAT].gain =
V2A_gain = (AB8500_ADC_CH_IBAT_MAX - AB8500_ADC_CH_IBAT_MIN)/
(AB8500_ADC_CH_IBAT_MAX_V - AB8500_ADC_CH_IBAT_MIN_V);
V2A_offset = ((AB8500_ADC_CH_IBAT_MAX_V * AB8500_ADC_CH_IBAT_MIN -
AB8500_ADC_CH_IBAT_MAX * AB8500_ADC_CH_IBAT_MIN_V)
<< AB8500_GPADC_CALIB_SHIFT_IBAT)
/ (AB8500_ADC_CH_IBAT_MAX_V - AB8500_ADC_CH_IBAT_MIN_V);
gpadc->cal_data[AB8500_CAL_IBAT].gain =
V_gain * V2A_gain;
gpadc->cal_data[ADC_INPUT_IBAT].offset =
gpadc->cal_data[AB8500_CAL_IBAT].offset =
V_offset * V2A_gain + V2A_offset;
} else {
gpadc->cal_data[ADC_INPUT_IBAT].gain = 0;
gpadc->cal_data[AB8500_CAL_IBAT].gain = 0;
}
dev_dbg(gpadc->dev, "IBAT gain %llu offset %llu\n",
gpadc->cal_data[ADC_INPUT_IBAT].gain,
gpadc->cal_data[ADC_INPUT_IBAT].offset);
} else {
/* Calculate gain and offset for VMAIN if all reads succeeded */
if (!(ret[0] < 0 || ret[1] < 0 || ret[2] < 0)) {
......@@ -804,19 +835,19 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
((gpadc_cal[2] & 0xC0) >> 6));
vmain_low = ((gpadc_cal[2] & 0x3E) >> 1);
gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi =
gpadc->cal_data[AB8500_CAL_VMAIN].otp_calib_hi =
(u16)vmain_high;
gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo =
gpadc->cal_data[AB8500_CAL_VMAIN].otp_calib_lo =
(u16)vmain_low;
gpadc->cal_data[ADC_INPUT_VMAIN].gain = CALIB_SCALE *
gpadc->cal_data[AB8500_CAL_VMAIN].gain = AB8500_GPADC_CALIB_SCALE *
(19500 - 315) / (vmain_high - vmain_low);
gpadc->cal_data[ADC_INPUT_VMAIN].offset = CALIB_SCALE *
19500 - (CALIB_SCALE * (19500 - 315) /
gpadc->cal_data[AB8500_CAL_VMAIN].offset = AB8500_GPADC_CALIB_SCALE *
19500 - (AB8500_GPADC_CALIB_SCALE * (19500 - 315) /
(vmain_high - vmain_low)) * vmain_high;
} else {
gpadc->cal_data[ADC_INPUT_VMAIN].gain = 0;
gpadc->cal_data[AB8500_CAL_VMAIN].gain = 0;
}
}
......@@ -826,16 +857,16 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
(gpadc_cal[3] << 1) | ((gpadc_cal[4] & 0x80) >> 7));
btemp_low = ((gpadc_cal[4] & 0x7C) >> 2);
gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_hi = (u16)btemp_high;
gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_lo = (u16)btemp_low;
gpadc->cal_data[AB8500_CAL_BTEMP].otp_calib_hi = (u16)btemp_high;
gpadc->cal_data[AB8500_CAL_BTEMP].otp_calib_lo = (u16)btemp_low;
gpadc->cal_data[ADC_INPUT_BTEMP].gain =
CALIB_SCALE * (1300 - 21) / (btemp_high - btemp_low);
gpadc->cal_data[ADC_INPUT_BTEMP].offset = CALIB_SCALE * 1300 -
(CALIB_SCALE * (1300 - 21) / (btemp_high - btemp_low))
gpadc->cal_data[AB8500_CAL_BTEMP].gain =
AB8500_GPADC_CALIB_SCALE * (1300 - 21) / (btemp_high - btemp_low);
gpadc->cal_data[AB8500_CAL_BTEMP].offset = AB8500_GPADC_CALIB_SCALE * 1300 -
(AB8500_GPADC_CALIB_SCALE * (1300 - 21) / (btemp_high - btemp_low))
* btemp_high;
} else {
gpadc->cal_data[ADC_INPUT_BTEMP].gain = 0;
gpadc->cal_data[AB8500_CAL_BTEMP].gain = 0;
}
/* Calculate gain and offset for VBAT if all reads succeeded */
......@@ -843,202 +874,337 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
vbat_high = (((gpadc_cal[4] & 0x03) << 8) | gpadc_cal[5]);
vbat_low = ((gpadc_cal[6] & 0xFC) >> 2);
gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_hi = (u16)vbat_high;
gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_lo = (u16)vbat_low;
gpadc->cal_data[AB8500_CAL_VBAT].otp_calib_hi = (u16)vbat_high;
gpadc->cal_data[AB8500_CAL_VBAT].otp_calib_lo = (u16)vbat_low;
gpadc->cal_data[ADC_INPUT_VBAT].gain = CALIB_SCALE *
gpadc->cal_data[AB8500_CAL_VBAT].gain = AB8500_GPADC_CALIB_SCALE *
(4700 - 2380) / (vbat_high - vbat_low);
gpadc->cal_data[ADC_INPUT_VBAT].offset = CALIB_SCALE * 4700 -
(CALIB_SCALE * (4700 - 2380) /
gpadc->cal_data[AB8500_CAL_VBAT].offset = AB8500_GPADC_CALIB_SCALE * 4700 -
(AB8500_GPADC_CALIB_SCALE * (4700 - 2380) /
(vbat_high - vbat_low)) * vbat_high;
} else {
gpadc->cal_data[ADC_INPUT_VBAT].gain = 0;
gpadc->cal_data[AB8500_CAL_VBAT].gain = 0;
}
}
dev_dbg(gpadc->dev, "VMAIN gain %llu offset %llu\n",
gpadc->cal_data[ADC_INPUT_VMAIN].gain,
gpadc->cal_data[ADC_INPUT_VMAIN].offset);
static int ab8500_gpadc_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int *val, int *val2, long mask)
{
struct ab8500_gpadc *gpadc = iio_priv(indio_dev);
const struct ab8500_gpadc_chan_info *ch;
int raw_val;
int processed;
ch = ab8500_gpadc_get_channel(gpadc, chan->address);
if (!ch) {
dev_err(gpadc->dev, "no such channel %lu\n",
chan->address);
return -EINVAL;
}
dev_dbg(gpadc->dev, "BTEMP gain %llu offset %llu\n",
gpadc->cal_data[ADC_INPUT_BTEMP].gain,
gpadc->cal_data[ADC_INPUT_BTEMP].offset);
raw_val = ab8500_gpadc_read(gpadc, ch, NULL);
if (raw_val < 0)
return raw_val;
if (mask == IIO_CHAN_INFO_RAW) {
*val = raw_val;
return IIO_VAL_INT;
}
dev_dbg(gpadc->dev, "VBAT gain %llu offset %llu\n",
gpadc->cal_data[ADC_INPUT_VBAT].gain,
gpadc->cal_data[ADC_INPUT_VBAT].offset);
if (mask == IIO_CHAN_INFO_PROCESSED) {
processed = ab8500_gpadc_ad_to_voltage(gpadc, ch->id, raw_val);
if (processed < 0)
return processed;
/* Return millivolt or milliamps or millicentigrades */
*val = processed * 1000;
return IIO_VAL_INT;
}
return -EINVAL;
}
static int ab8500_gpadc_of_xlate(struct iio_dev *indio_dev,
const struct of_phandle_args *iiospec)
{
int i;
for (i = 0; i < indio_dev->num_channels; i++)
if (indio_dev->channels[i].channel == iiospec->args[0])
return i;
return -EINVAL;
}
static const struct iio_info ab8500_gpadc_info = {
.of_xlate = ab8500_gpadc_of_xlate,
.read_raw = ab8500_gpadc_read_raw,
};
#ifdef CONFIG_PM
static int ab8500_gpadc_runtime_suspend(struct device *dev)
{
struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ab8500_gpadc *gpadc = iio_priv(indio_dev);
regulator_disable(gpadc->vddadc);
regulator_disable(gpadc->regu);
return 0;
}
static int ab8500_gpadc_runtime_resume(struct device *dev)
{
struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ab8500_gpadc *gpadc = iio_priv(indio_dev);
int ret;
ret = regulator_enable(gpadc->regu);
ret = regulator_enable(gpadc->vddadc);
if (ret)
dev_err(dev, "Failed to enable vtvout LDO: %d\n", ret);
dev_err(dev, "Failed to enable vddadc: %d\n", ret);
return ret;
}
#endif
#ifdef CONFIG_PM_SLEEP
static int ab8500_gpadc_suspend(struct device *dev)
/**
* ab8500_gpadc_parse_channel() - process devicetree channel configuration
* @dev: pointer to containing device
* @np: device tree node for the channel to configure
* @ch: channel info to fill in
* @iio_chan: IIO channel specification to fill in
*
* The devicetree will set up the channel for use with the specific device,
* and define usage for things like AUX GPADC inputs more precisely.
*/
static int ab8500_gpadc_parse_channel(struct device *dev,
struct device_node *np,
struct ab8500_gpadc_chan_info *ch,
struct iio_chan_spec *iio_chan)
{
struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
const char *name = np->name;
u32 chan;
int ret;
mutex_lock(&gpadc->ab8500_gpadc_lock);
ret = of_property_read_u32(np, "reg", &chan);
if (ret) {
dev_err(dev, "invalid channel number %s\n", name);
return ret;
}
if (chan > AB8500_GPADC_CHAN_BAT_TEMP_AND_IBAT) {
dev_err(dev, "%s channel number out of range %d\n", name, chan);
return -EINVAL;
}
pm_runtime_get_sync(dev);
iio_chan->channel = chan;
iio_chan->datasheet_name = name;
iio_chan->indexed = 1;
iio_chan->address = chan;
iio_chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_PROCESSED);
/* Most are voltages (also temperatures), some are currents */
if ((chan == AB8500_GPADC_CHAN_MAIN_CHARGER_CURRENT) ||
(chan == AB8500_GPADC_CHAN_USB_CHARGER_CURRENT))
iio_chan->type = IIO_CURRENT;
else
iio_chan->type = IIO_VOLTAGE;
ch->id = chan;
/* Sensible defaults */
ch->avg_sample = 16;
ch->hardware_control = false;
ch->falling_edge = false;
ch->trig_timer = 0;
regulator_disable(gpadc->regu);
return 0;
}
static int ab8500_gpadc_resume(struct device *dev)
/**
* ab8500_gpadc_parse_channels() - Parse the GPADC channels from DT
* @gpadc: the GPADC to configure the channels for
* @np: device tree node containing the channel configurations
* @chans: the IIO channels we parsed
* @nchans: the number of IIO channels we parsed
*/
static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
struct device_node *np,
struct iio_chan_spec **chans_parsed,
unsigned int *nchans_parsed)
{
struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
int ret;
struct device_node *child;
struct ab8500_gpadc_chan_info *ch;
struct iio_chan_spec *iio_chans;
unsigned int nchans;
int i;
ret = regulator_enable(gpadc->regu);
if (ret)
dev_err(dev, "Failed to enable vtvout LDO: %d\n", ret);
nchans = of_get_available_child_count(np);
if (!nchans) {
dev_err(gpadc->dev, "no channel children\n");
return -ENODEV;
}
dev_info(gpadc->dev, "found %d ADC channels\n", nchans);
pm_runtime_mark_last_busy(gpadc->dev);
pm_runtime_put_autosuspend(gpadc->dev);
iio_chans = devm_kcalloc(gpadc->dev, nchans,
sizeof(*iio_chans), GFP_KERNEL);
if (!iio_chans)
return -ENOMEM;
mutex_unlock(&gpadc->ab8500_gpadc_lock);
return ret;
gpadc->chans = devm_kcalloc(gpadc->dev, nchans,
sizeof(*gpadc->chans), GFP_KERNEL);
if (!gpadc->chans)
return -ENOMEM;
i = 0;
for_each_available_child_of_node(np, child) {
struct iio_chan_spec *iio_chan;
int ret;
ch = &gpadc->chans[i];
iio_chan = &iio_chans[i];
ret = ab8500_gpadc_parse_channel(gpadc->dev, child, ch,
iio_chan);
if (ret) {
of_node_put(child);
return ret;
}
i++;
}
gpadc->nchans = nchans;
*chans_parsed = iio_chans;
*nchans_parsed = nchans;
return 0;
}
#endif
static int ab8500_gpadc_probe(struct platform_device *pdev)
{
int ret = 0;
struct ab8500_gpadc *gpadc;
struct iio_dev *indio_dev;
struct device *dev = &pdev->dev;
struct device_node *np = pdev->dev.of_node;
struct iio_chan_spec *iio_chans;
unsigned int n_iio_chans;
int ret;
gpadc = devm_kzalloc(&pdev->dev,
sizeof(struct ab8500_gpadc), GFP_KERNEL);
if (!gpadc)
indio_dev = devm_iio_device_alloc(dev, sizeof(*gpadc));
if (!indio_dev)
return -ENOMEM;
platform_set_drvdata(pdev, indio_dev);
gpadc = iio_priv(indio_dev);
gpadc->dev = dev;
gpadc->ab8500 = dev_get_drvdata(dev->parent);
ret = ab8500_gpadc_parse_channels(gpadc, np, &iio_chans, &n_iio_chans);
if (ret)
return ret;
gpadc->irq_sw = platform_get_irq_byname(pdev, "SW_CONV_END");
if (gpadc->irq_sw < 0)
dev_err(gpadc->dev, "failed to get platform sw_conv_end irq\n");
if (gpadc->irq_sw < 0) {
dev_err(dev, "failed to get platform sw_conv_end irq\n");
return gpadc->irq_sw;
}
gpadc->irq_hw = platform_get_irq_byname(pdev, "HW_CONV_END");
if (gpadc->irq_hw < 0)
dev_err(gpadc->dev, "failed to get platform hw_conv_end irq\n");
gpadc->dev = &pdev->dev;
gpadc->parent = dev_get_drvdata(pdev->dev.parent);
mutex_init(&gpadc->ab8500_gpadc_lock);
if (gpadc->irq_hw < 0) {
dev_err(dev, "failed to get platform hw_conv_end irq\n");
return gpadc->irq_hw;
}
/* Initialize completion used to notify completion of conversion */
init_completion(&gpadc->ab8500_gpadc_complete);
/* Register interrupts */
if (gpadc->irq_sw >= 0) {
ret = request_threaded_irq(gpadc->irq_sw, NULL,
ab8500_bm_gpadcconvend_handler,
IRQF_NO_SUSPEND | IRQF_SHARED | IRQF_ONESHOT,
"ab8500-gpadc-sw",
gpadc);
if (ret < 0) {
dev_err(gpadc->dev,
"Failed to register interrupt irq: %d\n",
gpadc->irq_sw);
goto fail;
}
}
init_completion(&gpadc->complete);
if (gpadc->irq_hw >= 0) {
ret = request_threaded_irq(gpadc->irq_hw, NULL,
ab8500_bm_gpadcconvend_handler,
IRQF_NO_SUSPEND | IRQF_SHARED | IRQF_ONESHOT,
"ab8500-gpadc-hw",
gpadc);
if (ret < 0) {
dev_err(gpadc->dev,
"Failed to register interrupt irq: %d\n",
gpadc->irq_hw);
goto fail_irq;
}
/* Request interrupts */
ret = devm_request_threaded_irq(dev, gpadc->irq_sw, NULL,
ab8500_bm_gpadcconvend_handler, IRQF_NO_SUSPEND | IRQF_ONESHOT,
"ab8500-gpadc-sw", gpadc);
if (ret < 0) {
dev_err(dev,
"failed to request sw conversion irq %d\n",
gpadc->irq_sw);
return ret;
}
/* VTVout LDO used to power up ab8500-GPADC */
gpadc->regu = devm_regulator_get(&pdev->dev, "vddadc");
if (IS_ERR(gpadc->regu)) {
ret = PTR_ERR(gpadc->regu);
dev_err(gpadc->dev, "failed to get vtvout LDO\n");
goto fail_irq;
ret = devm_request_threaded_irq(dev, gpadc->irq_hw, NULL,
ab8500_bm_gpadcconvend_handler, IRQF_NO_SUSPEND | IRQF_ONESHOT,
"ab8500-gpadc-hw", gpadc);
if (ret < 0) {
dev_err(dev,
"Failed to request hw conversion irq: %d\n",
gpadc->irq_hw);
return ret;
}
platform_set_drvdata(pdev, gpadc);
/* The VTVout LDO used to power the AB8500 GPADC */
gpadc->vddadc = devm_regulator_get(dev, "vddadc");
if (IS_ERR(gpadc->vddadc)) {
ret = PTR_ERR(gpadc->vddadc);
dev_err(dev, "failed to get vddadc\n");
return ret;
}
ret = regulator_enable(gpadc->regu);
ret = regulator_enable(gpadc->vddadc);
if (ret) {
dev_err(gpadc->dev, "Failed to enable vtvout LDO: %d\n", ret);
goto fail_enable;
dev_err(dev, "failed to enable vddadc: %d\n", ret);
return ret;
}
pm_runtime_set_autosuspend_delay(gpadc->dev, GPADC_AUDOSUSPEND_DELAY);
pm_runtime_use_autosuspend(gpadc->dev);
pm_runtime_set_active(gpadc->dev);
pm_runtime_enable(gpadc->dev);
/* Enable runtime PM */
pm_runtime_get_noresume(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
pm_runtime_set_autosuspend_delay(dev, AB8500_GPADC_AUTOSUSPEND_DELAY);
pm_runtime_use_autosuspend(dev);
ab8500_gpadc_read_calibration_data(gpadc);
list_add_tail(&gpadc->node, &ab8500_gpadc_list);
dev_dbg(gpadc->dev, "probe success\n");
pm_runtime_put(dev);
indio_dev->dev.parent = dev;
indio_dev->dev.of_node = np;
indio_dev->name = "ab8500-gpadc";
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &ab8500_gpadc_info;
indio_dev->channels = iio_chans;
indio_dev->num_channels = n_iio_chans;
ret = devm_iio_device_register(dev, indio_dev);
if (ret)
goto out_dis_pm;
return 0;
fail_enable:
fail_irq:
free_irq(gpadc->irq_sw, gpadc);
free_irq(gpadc->irq_hw, gpadc);
fail:
out_dis_pm:
pm_runtime_get_sync(dev);
pm_runtime_put_noidle(dev);
pm_runtime_disable(dev);
regulator_disable(gpadc->vddadc);
return ret;
}
static int ab8500_gpadc_remove(struct platform_device *pdev)
{
struct ab8500_gpadc *gpadc = platform_get_drvdata(pdev);
/* remove this gpadc entry from the list */
list_del(&gpadc->node);
/* remove interrupt - completion of Sw ADC conversion */
if (gpadc->irq_sw >= 0)
free_irq(gpadc->irq_sw, gpadc);
if (gpadc->irq_hw >= 0)
free_irq(gpadc->irq_hw, gpadc);
struct iio_dev *indio_dev = platform_get_drvdata(pdev);
struct ab8500_gpadc *gpadc = iio_priv(indio_dev);
pm_runtime_get_sync(gpadc->dev);
pm_runtime_disable(gpadc->dev);
regulator_disable(gpadc->regu);
pm_runtime_set_suspended(gpadc->dev);
pm_runtime_put_noidle(gpadc->dev);
pm_runtime_disable(gpadc->dev);
regulator_disable(gpadc->vddadc);
return 0;
}
static const struct dev_pm_ops ab8500_gpadc_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
SET_RUNTIME_PM_OPS(ab8500_gpadc_runtime_suspend,
ab8500_gpadc_runtime_resume,
NULL)
SET_SYSTEM_SLEEP_PM_OPS(ab8500_gpadc_suspend,
ab8500_gpadc_resume)
};
static struct platform_driver ab8500_gpadc_driver = {
......@@ -1049,27 +1215,4 @@ static struct platform_driver ab8500_gpadc_driver = {
.pm = &ab8500_gpadc_pm_ops,
},
};
static int __init ab8500_gpadc_init(void)
{
return platform_driver_register(&ab8500_gpadc_driver);
}
subsys_initcall_sync(ab8500_gpadc_init);
/**
* ab8540_gpadc_get_otp() - returns OTP values
*
*/
void ab8540_gpadc_get_otp(struct ab8500_gpadc *gpadc,
u16 *vmain_l, u16 *vmain_h, u16 *btemp_l, u16 *btemp_h,
u16 *vbat_l, u16 *vbat_h, u16 *ibat_l, u16 *ibat_h)
{
*vmain_l = gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo;
*vmain_h = gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi;
*btemp_l = gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_lo;
*btemp_h = gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_hi;
*vbat_l = gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_lo;
*vbat_h = gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_hi;
*ibat_l = gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_lo;
*ibat_h = gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_hi;
}
builtin_platform_driver(ab8500_gpadc_driver);
drivers/mfd/Kconfig
View file @ 16922ffe
......@@ -1210,13 +1210,6 @@ config AB8500_DEBUG
Select this option if you want debug information using the debug
filesystem, debugfs.
config AB8500_GPADC
bool "ST-Ericsson AB8500 GPADC driver"
depends on AB8500_CORE && REGULATOR_AB8500
default y
help
AB8500 GPADC driver used to convert Acc and battery/ac/usb voltage
config MFD_DB8500_PRCMU
bool "ST-Ericsson DB8500 Power Reset Control Management Unit"
depends on UX500_SOC_DB8500
......
drivers/mfd/Makefile
View file @ 16922ffe
......@@ -177,7 +177,6 @@ obj-$(CONFIG_ABX500_CORE) += abx500-core.o
obj-$(CONFIG_AB3100_CORE) += ab3100-core.o
obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o
obj-$(CONFIG_AB8500_DEBUG) += ab8500-debugfs.o
obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o
obj-$(CONFIG_MFD_DB8500_PRCMU) += db8500-prcmu.o
# ab8500-core need to come after db8500-prcmu (which provides the channel)
obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-sysctrl.o
......
drivers/mfd/ab8500-debugfs.c
View file @ 16922ffe
......@@ -84,7 +84,6 @@
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-gpadc.h>
#ifdef CONFIG_DEBUG_FS
#include <linux/string.h>
......@@ -103,11 +102,6 @@ static int num_irqs;
static struct device_attribute **dev_attr;
static char **event_name;
static u8 avg_sample = SAMPLE_16;
static u8 trig_edge = RISING_EDGE;
static u8 conv_type = ADC_SW;
static u8 trig_timer;
/**
* struct ab8500_reg_range
* @first: the first address of the range
......@@ -152,7 +146,6 @@ static struct hwreg_cfg hwreg_cfg = {
};
#define AB8500_NAME_STRING "ab8500"
#define AB8500_ADC_NAME_STRING "gpadc"
#define AB8500_NUM_BANKS AB8500_DEBUG_FIELD_LAST
#define AB8500_REV_REG 0x80
......@@ -1646,633 +1639,6 @@ static int ab8500_modem_show(struct seq_file *s, void *p)
DEFINE_SHOW_ATTRIBUTE(ab8500_modem);
static int ab8500_gpadc_bat_ctrl_show(struct seq_file *s, void *p)
{
int bat_ctrl_raw;
int bat_ctrl_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
bat_ctrl_raw = ab8500_gpadc_read_raw(gpadc, BAT_CTRL,
avg_sample, trig_edge, trig_timer, conv_type);
bat_ctrl_convert = ab8500_gpadc_ad_to_voltage(gpadc,
BAT_CTRL, bat_ctrl_raw);
seq_printf(s, "%d,0x%X\n", bat_ctrl_convert, bat_ctrl_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_bat_ctrl);
static int ab8500_gpadc_btemp_ball_show(struct seq_file *s, void *p)
{
int btemp_ball_raw;
int btemp_ball_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
btemp_ball_raw = ab8500_gpadc_read_raw(gpadc, BTEMP_BALL,
avg_sample, trig_edge, trig_timer, conv_type);
btemp_ball_convert = ab8500_gpadc_ad_to_voltage(gpadc, BTEMP_BALL,
btemp_ball_raw);
seq_printf(s, "%d,0x%X\n", btemp_ball_convert, btemp_ball_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_btemp_ball);
static int ab8500_gpadc_main_charger_v_show(struct seq_file *s, void *p)
{
int main_charger_v_raw;
int main_charger_v_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
main_charger_v_raw = ab8500_gpadc_read_raw(gpadc, MAIN_CHARGER_V,
avg_sample, trig_edge, trig_timer, conv_type);
main_charger_v_convert = ab8500_gpadc_ad_to_voltage(gpadc,
MAIN_CHARGER_V, main_charger_v_raw);
seq_printf(s, "%d,0x%X\n", main_charger_v_convert, main_charger_v_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_main_charger_v);
static int ab8500_gpadc_acc_detect1_show(struct seq_file *s, void *p)
{
int acc_detect1_raw;
int acc_detect1_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
acc_detect1_raw = ab8500_gpadc_read_raw(gpadc, ACC_DETECT1,
avg_sample, trig_edge, trig_timer, conv_type);
acc_detect1_convert = ab8500_gpadc_ad_to_voltage(gpadc, ACC_DETECT1,
acc_detect1_raw);
seq_printf(s, "%d,0x%X\n", acc_detect1_convert, acc_detect1_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_acc_detect1);
static int ab8500_gpadc_acc_detect2_show(struct seq_file *s, void *p)
{
int acc_detect2_raw;
int acc_detect2_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
acc_detect2_raw = ab8500_gpadc_read_raw(gpadc, ACC_DETECT2,
avg_sample, trig_edge, trig_timer, conv_type);
acc_detect2_convert = ab8500_gpadc_ad_to_voltage(gpadc,
ACC_DETECT2, acc_detect2_raw);
seq_printf(s, "%d,0x%X\n", acc_detect2_convert, acc_detect2_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_acc_detect2);
static int ab8500_gpadc_aux1_show(struct seq_file *s, void *p)
{
int aux1_raw;
int aux1_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
aux1_raw = ab8500_gpadc_read_raw(gpadc, ADC_AUX1,
avg_sample, trig_edge, trig_timer, conv_type);
aux1_convert = ab8500_gpadc_ad_to_voltage(gpadc, ADC_AUX1,
aux1_raw);
seq_printf(s, "%d,0x%X\n", aux1_convert, aux1_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_aux1);
static int ab8500_gpadc_aux2_show(struct seq_file *s, void *p)
{
int aux2_raw;
int aux2_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
aux2_raw = ab8500_gpadc_read_raw(gpadc, ADC_AUX2,
avg_sample, trig_edge, trig_timer, conv_type);
aux2_convert = ab8500_gpadc_ad_to_voltage(gpadc, ADC_AUX2,
aux2_raw);
seq_printf(s, "%d,0x%X\n", aux2_convert, aux2_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_aux2);
static int ab8500_gpadc_main_bat_v_show(struct seq_file *s, void *p)
{
int main_bat_v_raw;
int main_bat_v_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
main_bat_v_raw = ab8500_gpadc_read_raw(gpadc, MAIN_BAT_V,
avg_sample, trig_edge, trig_timer, conv_type);
main_bat_v_convert = ab8500_gpadc_ad_to_voltage(gpadc, MAIN_BAT_V,
main_bat_v_raw);
seq_printf(s, "%d,0x%X\n", main_bat_v_convert, main_bat_v_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_main_bat_v);
static int ab8500_gpadc_vbus_v_show(struct seq_file *s, void *p)
{
int vbus_v_raw;
int vbus_v_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
vbus_v_raw = ab8500_gpadc_read_raw(gpadc, VBUS_V,
avg_sample, trig_edge, trig_timer, conv_type);
vbus_v_convert = ab8500_gpadc_ad_to_voltage(gpadc, VBUS_V,
vbus_v_raw);
seq_printf(s, "%d,0x%X\n", vbus_v_convert, vbus_v_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_vbus_v);
static int ab8500_gpadc_main_charger_c_show(struct seq_file *s, void *p)
{
int main_charger_c_raw;
int main_charger_c_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
main_charger_c_raw = ab8500_gpadc_read_raw(gpadc, MAIN_CHARGER_C,
avg_sample, trig_edge, trig_timer, conv_type);
main_charger_c_convert = ab8500_gpadc_ad_to_voltage(gpadc,
MAIN_CHARGER_C, main_charger_c_raw);
seq_printf(s, "%d,0x%X\n", main_charger_c_convert, main_charger_c_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_main_charger_c);
static int ab8500_gpadc_usb_charger_c_show(struct seq_file *s, void *p)
{
int usb_charger_c_raw;
int usb_charger_c_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
usb_charger_c_raw = ab8500_gpadc_read_raw(gpadc, USB_CHARGER_C,
avg_sample, trig_edge, trig_timer, conv_type);
usb_charger_c_convert = ab8500_gpadc_ad_to_voltage(gpadc,
USB_CHARGER_C, usb_charger_c_raw);
seq_printf(s, "%d,0x%X\n", usb_charger_c_convert, usb_charger_c_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_usb_charger_c);
static int ab8500_gpadc_bk_bat_v_show(struct seq_file *s, void *p)
{
int bk_bat_v_raw;
int bk_bat_v_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
bk_bat_v_raw = ab8500_gpadc_read_raw(gpadc, BK_BAT_V,
avg_sample, trig_edge, trig_timer, conv_type);
bk_bat_v_convert = ab8500_gpadc_ad_to_voltage(gpadc,
BK_BAT_V, bk_bat_v_raw);
seq_printf(s, "%d,0x%X\n", bk_bat_v_convert, bk_bat_v_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_bk_bat_v);
static int ab8500_gpadc_die_temp_show(struct seq_file *s, void *p)
{
int die_temp_raw;
int die_temp_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
die_temp_raw = ab8500_gpadc_read_raw(gpadc, DIE_TEMP,
avg_sample, trig_edge, trig_timer, conv_type);
die_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, DIE_TEMP,
die_temp_raw);
seq_printf(s, "%d,0x%X\n", die_temp_convert, die_temp_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_die_temp);
static int ab8500_gpadc_usb_id_show(struct seq_file *s, void *p)
{
int usb_id_raw;
int usb_id_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
usb_id_raw = ab8500_gpadc_read_raw(gpadc, USB_ID,
avg_sample, trig_edge, trig_timer, conv_type);
usb_id_convert = ab8500_gpadc_ad_to_voltage(gpadc, USB_ID,
usb_id_raw);
seq_printf(s, "%d,0x%X\n", usb_id_convert, usb_id_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8500_gpadc_usb_id);
static int ab8540_gpadc_xtal_temp_show(struct seq_file *s, void *p)
{
int xtal_temp_raw;
int xtal_temp_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
xtal_temp_raw = ab8500_gpadc_read_raw(gpadc, XTAL_TEMP,
avg_sample, trig_edge, trig_timer, conv_type);
xtal_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, XTAL_TEMP,
xtal_temp_raw);
seq_printf(s, "%d,0x%X\n", xtal_temp_convert, xtal_temp_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_xtal_temp);
static int ab8540_gpadc_vbat_true_meas_show(struct seq_file *s, void *p)
{
int vbat_true_meas_raw;
int vbat_true_meas_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
vbat_true_meas_raw = ab8500_gpadc_read_raw(gpadc, VBAT_TRUE_MEAS,
avg_sample, trig_edge, trig_timer, conv_type);
vbat_true_meas_convert =
ab8500_gpadc_ad_to_voltage(gpadc, VBAT_TRUE_MEAS,
vbat_true_meas_raw);
seq_printf(s, "%d,0x%X\n", vbat_true_meas_convert, vbat_true_meas_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_vbat_true_meas);
static int ab8540_gpadc_bat_ctrl_and_ibat_show(struct seq_file *s, void *p)
{
int bat_ctrl_raw;
int bat_ctrl_convert;
int ibat_raw;
int ibat_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
bat_ctrl_raw = ab8500_gpadc_double_read_raw(gpadc, BAT_CTRL_AND_IBAT,
avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
bat_ctrl_convert = ab8500_gpadc_ad_to_voltage(gpadc, BAT_CTRL,
bat_ctrl_raw);
ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
ibat_raw);
seq_printf(s,
"%d,0x%X\n"
"%d,0x%X\n",
bat_ctrl_convert, bat_ctrl_raw,
ibat_convert, ibat_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_bat_ctrl_and_ibat);
static int ab8540_gpadc_vbat_meas_and_ibat_show(struct seq_file *s, void *p)
{
int vbat_meas_raw;
int vbat_meas_convert;
int ibat_raw;
int ibat_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
vbat_meas_raw = ab8500_gpadc_double_read_raw(gpadc, VBAT_MEAS_AND_IBAT,
avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
vbat_meas_convert = ab8500_gpadc_ad_to_voltage(gpadc, MAIN_BAT_V,
vbat_meas_raw);
ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
ibat_raw);
seq_printf(s,
"%d,0x%X\n"
"%d,0x%X\n",
vbat_meas_convert, vbat_meas_raw,
ibat_convert, ibat_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_vbat_meas_and_ibat);
static int ab8540_gpadc_vbat_true_meas_and_ibat_show(struct seq_file *s, void *p)
{
int vbat_true_meas_raw;
int vbat_true_meas_convert;
int ibat_raw;
int ibat_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
vbat_true_meas_raw = ab8500_gpadc_double_read_raw(gpadc,
VBAT_TRUE_MEAS_AND_IBAT, avg_sample, trig_edge,
trig_timer, conv_type, &ibat_raw);
vbat_true_meas_convert = ab8500_gpadc_ad_to_voltage(gpadc,
VBAT_TRUE_MEAS, vbat_true_meas_raw);
ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
ibat_raw);
seq_printf(s,
"%d,0x%X\n"
"%d,0x%X\n",
vbat_true_meas_convert, vbat_true_meas_raw,
ibat_convert, ibat_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_vbat_true_meas_and_ibat);
static int ab8540_gpadc_bat_temp_and_ibat_show(struct seq_file *s, void *p)
{
int bat_temp_raw;
int bat_temp_convert;
int ibat_raw;
int ibat_convert;
struct ab8500_gpadc *gpadc;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
bat_temp_raw = ab8500_gpadc_double_read_raw(gpadc, BAT_TEMP_AND_IBAT,
avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
bat_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, BTEMP_BALL,
bat_temp_raw);
ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
ibat_raw);
seq_printf(s,
"%d,0x%X\n"
"%d,0x%X\n",
bat_temp_convert, bat_temp_raw,
ibat_convert, ibat_raw);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_bat_temp_and_ibat);
static int ab8540_gpadc_otp_calib_show(struct seq_file *s, void *p)
{
struct ab8500_gpadc *gpadc;
u16 vmain_l, vmain_h, btemp_l, btemp_h;
u16 vbat_l, vbat_h, ibat_l, ibat_h;
gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
ab8540_gpadc_get_otp(gpadc, &vmain_l, &vmain_h, &btemp_l, &btemp_h,
&vbat_l, &vbat_h, &ibat_l, &ibat_h);
seq_printf(s,
"VMAIN_L:0x%X\n"
"VMAIN_H:0x%X\n"
"BTEMP_L:0x%X\n"
"BTEMP_H:0x%X\n"
"VBAT_L:0x%X\n"
"VBAT_H:0x%X\n"
"IBAT_L:0x%X\n"
"IBAT_H:0x%X\n",
vmain_l, vmain_h, btemp_l, btemp_h,
vbat_l, vbat_h, ibat_l, ibat_h);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ab8540_gpadc_otp_calib);
static int ab8500_gpadc_avg_sample_print(struct seq_file *s, void *p)
{
seq_printf(s, "%d\n", avg_sample);
return 0;
}
static int ab8500_gpadc_avg_sample_open(struct inode *inode, struct file *file)
{
return single_open(file, ab8500_gpadc_avg_sample_print,
inode->i_private);
}
static ssize_t ab8500_gpadc_avg_sample_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct device *dev = ((struct seq_file *)(file->private_data))->private;
unsigned long user_avg_sample;
int err;
err = kstrtoul_from_user(user_buf, count, 0, &user_avg_sample);
if (err)
return err;
if ((user_avg_sample == SAMPLE_1) || (user_avg_sample == SAMPLE_4)
|| (user_avg_sample == SAMPLE_8)
|| (user_avg_sample == SAMPLE_16)) {
avg_sample = (u8) user_avg_sample;
} else {
dev_err(dev,
"debugfs err input: should be egal to 1, 4, 8 or 16\n");
return -EINVAL;
}
return count;
}
static const struct file_operations ab8500_gpadc_avg_sample_fops = {
.open = ab8500_gpadc_avg_sample_open,
.read = seq_read,
.write = ab8500_gpadc_avg_sample_write,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static int ab8500_gpadc_trig_edge_print(struct seq_file *s, void *p)
{
seq_printf(s, "%d\n", trig_edge);
return 0;
}
static int ab8500_gpadc_trig_edge_open(struct inode *inode, struct file *file)
{
return single_open(file, ab8500_gpadc_trig_edge_print,
inode->i_private);
}
static ssize_t ab8500_gpadc_trig_edge_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct device *dev = ((struct seq_file *)(file->private_data))->private;
unsigned long user_trig_edge;
int err;
err = kstrtoul_from_user(user_buf, count, 0, &user_trig_edge);
if (err)
return err;
if ((user_trig_edge == RISING_EDGE)
|| (user_trig_edge == FALLING_EDGE)) {
trig_edge = (u8) user_trig_edge;
} else {
dev_err(dev, "Wrong input:\n"
"Enter 0. Rising edge\n"
"Enter 1. Falling edge\n");
return -EINVAL;
}
return count;
}
static const struct file_operations ab8500_gpadc_trig_edge_fops = {
.open = ab8500_gpadc_trig_edge_open,
.read = seq_read,
.write = ab8500_gpadc_trig_edge_write,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static int ab8500_gpadc_trig_timer_print(struct seq_file *s, void *p)
{
seq_printf(s, "%d\n", trig_timer);
return 0;
}
static int ab8500_gpadc_trig_timer_open(struct inode *inode, struct file *file)
{
return single_open(file, ab8500_gpadc_trig_timer_print,
inode->i_private);
}
static ssize_t ab8500_gpadc_trig_timer_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct device *dev = ((struct seq_file *)(file->private_data))->private;
unsigned long user_trig_timer;
int err;
err = kstrtoul_from_user(user_buf, count, 0, &user_trig_timer);
if (err)
return err;
if (user_trig_timer & ~0xFF) {
dev_err(dev,
"debugfs error input: should be between 0 to 255\n");
return -EINVAL;
}
trig_timer = (u8) user_trig_timer;
return count;
}
static const struct file_operations ab8500_gpadc_trig_timer_fops = {
.open = ab8500_gpadc_trig_timer_open,
.read = seq_read,
.write = ab8500_gpadc_trig_timer_write,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static int ab8500_gpadc_conv_type_print(struct seq_file *s, void *p)
{
seq_printf(s, "%d\n", conv_type);
return 0;
}
static int ab8500_gpadc_conv_type_open(struct inode *inode, struct file *file)
{
return single_open(file, ab8500_gpadc_conv_type_print,
inode->i_private);
}
static ssize_t ab8500_gpadc_conv_type_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct device *dev = ((struct seq_file *)(file->private_data))->private;
unsigned long user_conv_type;
int err;
err = kstrtoul_from_user(user_buf, count, 0, &user_conv_type);
if (err)
return err;
if ((user_conv_type == ADC_SW)
|| (user_conv_type == ADC_HW)) {
conv_type = (u8) user_conv_type;
} else {
dev_err(dev, "Wrong input:\n"
"Enter 0. ADC SW conversion\n"
"Enter 1. ADC HW conversion\n");
return -EINVAL;
}
return count;
}
static const struct file_operations ab8500_gpadc_conv_type_fops = {
.open = ab8500_gpadc_conv_type_open,
.read = seq_read,
.write = ab8500_gpadc_conv_type_write,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
/*
* return length of an ASCII numerical value, 0 is string is not a
* numerical value.
......@@ -2647,7 +2013,6 @@ static const struct file_operations ab8500_hwreg_fops = {
static int ab8500_debug_probe(struct platform_device *plf)
{
struct dentry *ab8500_dir;
struct dentry *ab8500_gpadc_dir;
struct ab8500 *ab8500;
struct resource *res;
......@@ -2689,9 +2054,6 @@ static int ab8500_debug_probe(struct platform_device *plf)
ab8500_dir = debugfs_create_dir(AB8500_NAME_STRING, NULL);
ab8500_gpadc_dir = debugfs_create_dir(AB8500_ADC_NAME_STRING,
ab8500_dir);
debugfs_create_file("all-bank-registers", S_IRUGO, ab8500_dir,
&plf->dev, &ab8500_bank_registers_fops);
debugfs_create_file("all-banks", S_IRUGO, ab8500_dir,
......@@ -2727,83 +2089,6 @@ static int ab8500_debug_probe(struct platform_device *plf)
&plf->dev, &ab8500_hwreg_fops);
debugfs_create_file("all-modem-registers", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_dir, &plf->dev, &ab8500_modem_fops);
debugfs_create_file("bat_ctrl", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_bat_ctrl_fops);
debugfs_create_file("btemp_ball", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_btemp_ball_fops);
debugfs_create_file("main_charger_v", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_main_charger_v_fops);
debugfs_create_file("acc_detect1", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_acc_detect1_fops);
debugfs_create_file("acc_detect2", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_acc_detect2_fops);
debugfs_create_file("adc_aux1", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_aux1_fops);
debugfs_create_file("adc_aux2", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_aux2_fops);
debugfs_create_file("main_bat_v", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_main_bat_v_fops);
debugfs_create_file("vbus_v", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_vbus_v_fops);
debugfs_create_file("main_charger_c", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_main_charger_c_fops);
debugfs_create_file("usb_charger_c", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_usb_charger_c_fops);
debugfs_create_file("bk_bat_v", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_bk_bat_v_fops);
debugfs_create_file("die_temp", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_die_temp_fops);
debugfs_create_file("usb_id", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_usb_id_fops);
if (is_ab8540(ab8500)) {
debugfs_create_file("xtal_temp", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8540_gpadc_xtal_temp_fops);
debugfs_create_file("vbattruemeas", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8540_gpadc_vbat_true_meas_fops);
debugfs_create_file("batctrl_and_ibat", (S_IRUGO | S_IWUGO),
ab8500_gpadc_dir, &plf->dev,
&ab8540_gpadc_bat_ctrl_and_ibat_fops);
debugfs_create_file("vbatmeas_and_ibat", (S_IRUGO | S_IWUGO),
ab8500_gpadc_dir, &plf->dev,
&ab8540_gpadc_vbat_meas_and_ibat_fops);
debugfs_create_file("vbattruemeas_and_ibat", (S_IRUGO | S_IWUGO),
ab8500_gpadc_dir, &plf->dev,
&ab8540_gpadc_vbat_true_meas_and_ibat_fops);
debugfs_create_file("battemp_and_ibat", (S_IRUGO | S_IWUGO),
ab8500_gpadc_dir, &plf->dev,
&ab8540_gpadc_bat_temp_and_ibat_fops);
debugfs_create_file("otp_calib", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8540_gpadc_otp_calib_fops);
}
debugfs_create_file("avg_sample", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_avg_sample_fops);
debugfs_create_file("trig_edge", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_trig_edge_fops);
debugfs_create_file("trig_timer", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_trig_timer_fops);
debugfs_create_file("conv_type", (S_IRUGO | S_IWUSR | S_IWGRP),
ab8500_gpadc_dir, &plf->dev,
&ab8500_gpadc_conv_type_fops);
return 0;
}
......
drivers/power/supply/Kconfig
View file @ 16922ffe
......@@ -629,7 +629,7 @@ config BATTERY_GAUGE_LTC2941
config AB8500_BM
bool "AB8500 Battery Management Driver"
depends on AB8500_CORE && AB8500_GPADC
depends on AB8500_CORE && AB8500_GPADC && (IIO = y)
help
Say Y to include support for AB8500 battery management.
......
drivers/power/supply/ab8500_btemp.c
View file @ 16922ffe
......@@ -26,7 +26,7 @@
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
#include <linux/mfd/abx500/ab8500-gpadc.h>
#include <linux/iio/consumer.h>
#define VTVOUT_V 1800
......@@ -79,7 +79,8 @@ struct ab8500_btemp_ranges {
* @bat_temp: Dispatched battery temperature in degree Celsius
* @prev_bat_temp Last measured battery temperature in degree Celsius
* @parent: Pointer to the struct ab8500
* @gpadc: Pointer to the struct gpadc
* @adc_btemp_ball: ADC channel for the battery ball temperature
* @adc_bat_ctrl: ADC channel for the battery control
* @fg: Pointer to the struct fg
* @bm: Platform specific battery management information
* @btemp_psy: Structure for BTEMP specific battery properties
......@@ -96,7 +97,8 @@ struct ab8500_btemp {
int bat_temp;
int prev_bat_temp;
struct ab8500 *parent;
struct ab8500_gpadc *gpadc;
struct iio_channel *btemp_ball;
struct iio_channel *bat_ctrl;
struct ab8500_fg *fg;
struct abx500_bm_data *bm;
struct power_supply *btemp_psy;
......@@ -177,13 +179,13 @@ static int ab8500_btemp_batctrl_volt_to_res(struct ab8500_btemp *di,
*/
static int ab8500_btemp_read_batctrl_voltage(struct ab8500_btemp *di)
{
int vbtemp;
int vbtemp, ret;
static int prev;
vbtemp = ab8500_gpadc_convert(di->gpadc, BAT_CTRL);
if (vbtemp < 0) {
ret = iio_read_channel_processed(di->bat_ctrl, &vbtemp);
if (ret < 0) {
dev_err(di->dev,
"%s gpadc conversion failed, using previous value",
"%s ADC conversion failed, using previous value",
__func__);
return prev;
}
......@@ -455,7 +457,7 @@ static int ab8500_btemp_res_to_temp(struct ab8500_btemp *di,
*/
static int ab8500_btemp_measure_temp(struct ab8500_btemp *di)
{
int temp;
int temp, ret;
static int prev;
int rbat, rntc, vntc;
u8 id;
......@@ -480,10 +482,10 @@ static int ab8500_btemp_measure_temp(struct ab8500_btemp *di)
di->bm->bat_type[id].r_to_t_tbl,
di->bm->bat_type[id].n_temp_tbl_elements, rbat);
} else {
vntc = ab8500_gpadc_convert(di->gpadc, BTEMP_BALL);
if (vntc < 0) {
ret = iio_read_channel_processed(di->btemp_ball, &vntc);
if (ret < 0) {
dev_err(di->dev,
"%s gpadc conversion failed,"
"%s ADC conversion failed,"
" using previous value\n", __func__);
return prev;
}
......@@ -1024,7 +1026,22 @@ static int ab8500_btemp_probe(struct platform_device *pdev)
/* get parent data */
di->dev = &pdev->dev;
di->parent = dev_get_drvdata(pdev->dev.parent);
di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
/* Get ADC channels */
di->btemp_ball = devm_iio_channel_get(&pdev->dev, "btemp_ball");
if (IS_ERR(di->btemp_ball)) {
if (PTR_ERR(di->btemp_ball) == -ENODEV)
return -EPROBE_DEFER;
dev_err(&pdev->dev, "failed to get BTEMP BALL ADC channel\n");
return PTR_ERR(di->btemp_ball);
}
di->bat_ctrl = devm_iio_channel_get(&pdev->dev, "bat_ctrl");
if (IS_ERR(di->bat_ctrl)) {
if (PTR_ERR(di->bat_ctrl) == -ENODEV)
return -EPROBE_DEFER;
dev_err(&pdev->dev, "failed to get BAT CTRL ADC channel\n");
return PTR_ERR(di->bat_ctrl);
}
di->initialized = false;
......
drivers/power/supply/ab8500_charger.c
View file @ 16922ffe
......@@ -29,10 +29,10 @@
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
#include <linux/mfd/abx500/ab8500-gpadc.h>
#include <linux/mfd/abx500/ux500_chargalg.h>
#include <linux/usb/otg.h>
#include <linux/mutex.h>
#include <linux/iio/consumer.h>
/* Charger constants */
#define NO_PW_CONN 0
......@@ -233,7 +233,10 @@ struct ab8500_charger_max_usb_in_curr {
* @current_stepping_sessions:
* Counter for current stepping sessions
* @parent: Pointer to the struct ab8500
* @gpadc: Pointer to the struct gpadc
* @adc_main_charger_v ADC channel for main charger voltage
* @adc_main_charger_c ADC channel for main charger current
* @adc_vbus_v ADC channel for USB charger voltage
* @adc_usb_charger_c ADC channel for USB charger current
* @bm: Platform specific battery management information
* @flags: Structure for information about events triggered
* @usb_state: Structure for usb stack information
......@@ -283,7 +286,10 @@ struct ab8500_charger {
int is_aca_rid;
atomic_t current_stepping_sessions;
struct ab8500 *parent;
struct ab8500_gpadc *gpadc;
struct iio_channel *adc_main_charger_v;
struct iio_channel *adc_main_charger_c;
struct iio_channel *adc_vbus_v;
struct iio_channel *adc_usb_charger_c;
struct abx500_bm_data *bm;
struct ab8500_charger_event_flags flags;
struct ab8500_charger_usb_state usb_state;
......@@ -459,13 +465,13 @@ static void ab8500_charger_set_usb_connected(struct ab8500_charger *di,
*/
static int ab8500_charger_get_ac_voltage(struct ab8500_charger *di)
{
int vch;
int vch, ret;
/* Only measure voltage if the charger is connected */
if (di->ac.charger_connected) {
vch = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_V);
if (vch < 0)
dev_err(di->dev, "%s gpadc conv failed,\n", __func__);
ret = iio_read_channel_processed(di->adc_main_charger_v, &vch);
if (ret < 0)
dev_err(di->dev, "%s ADC conv failed,\n", __func__);
} else {
vch = 0;
}
......@@ -510,13 +516,13 @@ static int ab8500_charger_ac_cv(struct ab8500_charger *di)
*/
static int ab8500_charger_get_vbus_voltage(struct ab8500_charger *di)
{
int vch;
int vch, ret;
/* Only measure voltage if the charger is connected */
if (di->usb.charger_connected) {
vch = ab8500_gpadc_convert(di->gpadc, VBUS_V);
if (vch < 0)
dev_err(di->dev, "%s gpadc conv failed\n", __func__);
ret = iio_read_channel_processed(di->adc_vbus_v, &vch);
if (ret < 0)
dev_err(di->dev, "%s ADC conv failed,\n", __func__);
} else {
vch = 0;
}
......@@ -532,13 +538,13 @@ static int ab8500_charger_get_vbus_voltage(struct ab8500_charger *di)
*/
static int ab8500_charger_get_usb_current(struct ab8500_charger *di)
{
int ich;
int ich, ret;
/* Only measure current if the charger is online */
if (di->usb.charger_online) {
ich = ab8500_gpadc_convert(di->gpadc, USB_CHARGER_C);
if (ich < 0)
dev_err(di->dev, "%s gpadc conv failed\n", __func__);
ret = iio_read_channel_processed(di->adc_usb_charger_c, &ich);
if (ret < 0)
dev_err(di->dev, "%s ADC conv failed,\n", __func__);
} else {
ich = 0;
}
......@@ -554,13 +560,13 @@ static int ab8500_charger_get_usb_current(struct ab8500_charger *di)
*/
static int ab8500_charger_get_ac_current(struct ab8500_charger *di)
{
int ich;
int ich, ret;
/* Only measure current if the charger is online */
if (di->ac.charger_online) {
ich = ab8500_gpadc_convert(di->gpadc, MAIN_CHARGER_C);
if (ich < 0)
dev_err(di->dev, "%s gpadc conv failed\n", __func__);
ret = iio_read_channel_processed(di->adc_main_charger_c, &ich);
if (ret < 0)
dev_err(di->dev, "%s ADC conv failed,\n", __func__);
} else {
ich = 0;
}
......@@ -3371,7 +3377,39 @@ static int ab8500_charger_probe(struct platform_device *pdev)
/* get parent data */
di->dev = &pdev->dev;
di->parent = dev_get_drvdata(pdev->dev.parent);
di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
/* Get ADC channels */
di->adc_main_charger_v = devm_iio_channel_get(&pdev->dev,
"main_charger_v");
if (IS_ERR(di->adc_main_charger_v)) {
if (PTR_ERR(di->adc_main_charger_v) == -ENODEV)
return -EPROBE_DEFER;
dev_err(&pdev->dev, "failed to get ADC main charger voltage\n");
return PTR_ERR(di->adc_main_charger_v);
}
di->adc_main_charger_c = devm_iio_channel_get(&pdev->dev,
"main_charger_c");
if (IS_ERR(di->adc_main_charger_c)) {
if (PTR_ERR(di->adc_main_charger_c) == -ENODEV)
return -EPROBE_DEFER;
dev_err(&pdev->dev, "failed to get ADC main charger current\n");
return PTR_ERR(di->adc_main_charger_v);
}
di->adc_vbus_v = devm_iio_channel_get(&pdev->dev, "vbus_v");
if (IS_ERR(di->adc_vbus_v)) {
if (PTR_ERR(di->adc_vbus_v) == -ENODEV)
return -EPROBE_DEFER;
dev_err(&pdev->dev, "failed to get ADC USB charger voltage\n");
return PTR_ERR(di->adc_vbus_v);
}
di->adc_usb_charger_c = devm_iio_channel_get(&pdev->dev,
"usb_charger_c");
if (IS_ERR(di->adc_usb_charger_c)) {
if (PTR_ERR(di->adc_usb_charger_c) == -ENODEV)
return -EPROBE_DEFER;
dev_err(&pdev->dev, "failed to get ADC USB charger current\n");
return PTR_ERR(di->adc_usb_charger_c);
}
/* initialize lock */
spin_lock_init(&di->usb_state.usb_lock);
......
drivers/power/supply/ab8500_fg.c
View file @ 16922ffe
......@@ -32,7 +32,7 @@
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
#include <linux/mfd/abx500/ab8500-gpadc.h>
#include <linux/iio/consumer.h>
#include <linux/kernel.h>
#define MILLI_TO_MICRO 1000
......@@ -182,7 +182,7 @@ struct inst_curr_result_list {
* @bat_cap: Structure for battery capacity specific parameters
* @avg_cap: Average capacity filter
* @parent: Pointer to the struct ab8500
* @gpadc: Pointer to the struct gpadc
* @main_bat_v: ADC channel for the main battery voltage
* @bm: Platform specific battery management information
* @fg_psy: Structure that holds the FG specific battery properties
* @fg_wq: Work queue for running the FG algorithm
......@@ -224,7 +224,7 @@ struct ab8500_fg {
struct ab8500_fg_battery_capacity bat_cap;
struct ab8500_fg_avg_cap avg_cap;
struct ab8500 *parent;
struct ab8500_gpadc *gpadc;
struct iio_channel *main_bat_v;
struct abx500_bm_data *bm;
struct power_supply *fg_psy;
struct workqueue_struct *fg_wq;
......@@ -829,13 +829,13 @@ static void ab8500_fg_acc_cur_work(struct work_struct *work)
*/
static int ab8500_fg_bat_voltage(struct ab8500_fg *di)
{
int vbat;
int vbat, ret;
static int prev;
vbat = ab8500_gpadc_convert(di->gpadc, MAIN_BAT_V);
if (vbat < 0) {
ret = iio_read_channel_processed(di->main_bat_v, &vbat);
if (ret < 0) {
dev_err(di->dev,
"%s gpadc conversion failed, using previous value\n",
"%s ADC conversion failed, using previous value\n",
__func__);
return prev;
}
......@@ -3066,7 +3066,14 @@ static int ab8500_fg_probe(struct platform_device *pdev)
/* get parent data */
di->dev = &pdev->dev;
di->parent = dev_get_drvdata(pdev->dev.parent);
di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
di->main_bat_v = devm_iio_channel_get(&pdev->dev, "main_bat_v");
if (IS_ERR(di->main_bat_v)) {
if (PTR_ERR(di->main_bat_v) == -ENODEV)
return -EPROBE_DEFER;
dev_err(&pdev->dev, "failed to get main battery ADC channel\n");
return PTR_ERR(di->main_bat_v);
}
psy_cfg.supplied_to = supply_interface;
psy_cfg.num_supplicants = ARRAY_SIZE(supply_interface);
......
include/linux/mfd/abx500/ab8500-gpadc.h deleted 100644 → 0
View file @ 686191a7
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2010 ST-Ericsson SA
*
* Author: Arun R Murthy <arun.murthy@stericsson.com>
* Author: Daniel Willerud <daniel.willerud@stericsson.com>
* Author: M'boumba Cedric Madianga <cedric.madianga@stericsson.com>
*/
#ifndef _AB8500_GPADC_H
#define _AB8500_GPADC_H
/* GPADC source: From datasheet(ADCSwSel[4:0] in GPADCCtrl2
* and ADCHwSel[4:0] in GPADCCtrl3 ) */
#define BAT_CTRL 0x01
#define BTEMP_BALL 0x02
#define MAIN_CHARGER_V 0x03
#define ACC_DETECT1 0x04
#define ACC_DETECT2 0x05
#define ADC_AUX1 0x06
#define ADC_AUX2 0x07
#define MAIN_BAT_V 0x08
#define VBUS_V 0x09
#define MAIN_CHARGER_C 0x0A
#define USB_CHARGER_C 0x0B
#define BK_BAT_V 0x0C
#define DIE_TEMP 0x0D
#define USB_ID 0x0E
#define XTAL_TEMP 0x12
#define VBAT_TRUE_MEAS 0x13
#define BAT_CTRL_AND_IBAT 0x1C
#define VBAT_MEAS_AND_IBAT 0x1D
#define VBAT_TRUE_MEAS_AND_IBAT 0x1E
#define BAT_TEMP_AND_IBAT 0x1F
/* Virtual channel used only for ibat convertion to ampere
* Battery current conversion (ibat) cannot be requested as a single conversion
* but it is always in combination with other input requests
*/
#define IBAT_VIRTUAL_CHANNEL 0xFF
#define SAMPLE_1 1
#define SAMPLE_4 4
#define SAMPLE_8 8
#define SAMPLE_16 16
#define RISING_EDGE 0
#define FALLING_EDGE 1
/* Arbitrary ADC conversion type constants */
#define ADC_SW 0
#define ADC_HW 1
struct ab8500_gpadc;
struct ab8500_gpadc *ab8500_gpadc_get(char *name);
int ab8500_gpadc_sw_hw_convert(struct ab8500_gpadc *gpadc, u8 channel,
u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type);
static inline int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 channel)
{
return ab8500_gpadc_sw_hw_convert(gpadc, channel,
SAMPLE_16, 0, 0, ADC_SW);
}
int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type);
int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type,
int *ibat);
int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc,
u8 channel, int ad_value);
void ab8540_gpadc_get_otp(struct ab8500_gpadc *gpadc,
u16 *vmain_l, u16 *vmain_h, u16 *btemp_l, u16 *btemp_h,
u16 *vbat_l, u16 *vbat_h, u16 *ibat_l, u16 *ibat_h);
#endif /* _AB8500_GPADC_H */
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