^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Driver for the ADC on Freescale Semiconductor MC13783 and MC13892 PMICs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2009 Sascha Hauer, Pengutronix
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/mfd/mc13xxx.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/hwmon-sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/hwmon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define DRIVER_NAME "mc13783-adc"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) /* platform device id driver data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define MC13783_ADC_16CHANS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define MC13783_ADC_BPDIV2 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct mc13783_adc_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct mc13xxx *mc13xxx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct device *hwmon_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) char name[PLATFORM_NAME_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static ssize_t name_show(struct device *dev, struct device_attribute *devattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct mc13783_adc_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) return sprintf(buf, "%s\n", priv->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static int mc13783_adc_read(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct device_attribute *devattr, unsigned int *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct mc13783_adc_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) unsigned int channel = attr->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) unsigned int sample[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) ret = mc13xxx_adc_do_conversion(priv->mc13xxx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) MC13XXX_ADC_MODE_MULT_CHAN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) channel, 0, 0, sample);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* ADIN7 subchannels */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (channel >= 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) channel = 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) channel &= 0x7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) *val = (sample[channel % 4] >> (channel > 3 ? 14 : 2)) & 0x3ff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static ssize_t mc13783_adc_bp_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) struct device_attribute *devattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) unsigned val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) kernel_ulong_t driver_data = platform_get_device_id(pdev)->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) int ret = mc13783_adc_read(dev, devattr, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (driver_data & MC13783_ADC_BPDIV2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) val = DIV_ROUND_CLOSEST(val * 9, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * BP (channel 2) reports with offset 2.4V to the actual value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * to fit the input range of the ADC. unit = 2.25mV = 9/4 mV.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) val = DIV_ROUND_CLOSEST(val * 9, 4) + 2400;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return sprintf(buf, "%u\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static ssize_t mc13783_adc_gp_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct device_attribute *devattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) unsigned val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) int ret = mc13783_adc_read(dev, devattr, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * input range is [0, 2.3V], val has 10 bits, so each bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * is worth 9/4 mV.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) val = DIV_ROUND_CLOSEST(val * 9, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return sprintf(buf, "%u\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static ssize_t mc13783_adc_uid_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct device_attribute *devattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) kernel_ulong_t driver_data = platform_get_device_id(pdev)->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) int ret = mc13783_adc_read(dev, devattr, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (driver_data & MC13783_ADC_BPDIV2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /* MC13892 have 1/2 divider, input range is [0, 4.800V] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) val = DIV_ROUND_CLOSEST(val * 4800, 1024);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /* MC13783 have 0.9 divider, input range is [0, 2.555V] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) val = DIV_ROUND_CLOSEST(val * 2555, 1024);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) return sprintf(buf, "%u\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static ssize_t mc13783_adc_temp_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct device_attribute *devattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) kernel_ulong_t driver_data = platform_get_device_id(pdev)->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) int ret = mc13783_adc_read(dev, devattr, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (driver_data & MC13783_ADC_BPDIV2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * MC13892:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * Die Temperature Read Out Code at 25C 680
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * Temperature change per LSB +0.4244C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) ret = DIV_ROUND_CLOSEST(-2635920 + val * 4244, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * MC13783:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * Die Temperature Read Out Code at 25C 282
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * Temperature change per LSB -1.14C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) ret = 346480 - 1140 * val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) return sprintf(buf, "%d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static DEVICE_ATTR_RO(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static SENSOR_DEVICE_ATTR_RO(in2_input, mc13783_adc_bp, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static SENSOR_DEVICE_ATTR_RO(in5_input, mc13783_adc_gp, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static SENSOR_DEVICE_ATTR_RO(in6_input, mc13783_adc_gp, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static SENSOR_DEVICE_ATTR_RO(in7_input, mc13783_adc_gp, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static SENSOR_DEVICE_ATTR_RO(in8_input, mc13783_adc_gp, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) static SENSOR_DEVICE_ATTR_RO(in9_input, mc13783_adc_gp, 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static SENSOR_DEVICE_ATTR_RO(in10_input, mc13783_adc_gp, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static SENSOR_DEVICE_ATTR_RO(in11_input, mc13783_adc_gp, 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static SENSOR_DEVICE_ATTR_RO(in12_input, mc13783_adc_gp, 12);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static SENSOR_DEVICE_ATTR_RO(in13_input, mc13783_adc_gp, 13);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static SENSOR_DEVICE_ATTR_RO(in14_input, mc13783_adc_gp, 14);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static SENSOR_DEVICE_ATTR_RO(in15_input, mc13783_adc_gp, 15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static SENSOR_DEVICE_ATTR_RO(in16_input, mc13783_adc_uid, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static SENSOR_DEVICE_ATTR_RO(temp1_input, mc13783_adc_temp, 17);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static struct attribute *mc13783_attr_base[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) &dev_attr_name.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) &sensor_dev_attr_in2_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) &sensor_dev_attr_in5_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) &sensor_dev_attr_in6_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) &sensor_dev_attr_in7_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) &sensor_dev_attr_in16_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) &sensor_dev_attr_temp1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static const struct attribute_group mc13783_group_base = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .attrs = mc13783_attr_base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) /* these are only used if MC13783_ADC_16CHANS is provided in driver data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) static struct attribute *mc13783_attr_16chans[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) &sensor_dev_attr_in8_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) &sensor_dev_attr_in9_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) &sensor_dev_attr_in10_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) &sensor_dev_attr_in11_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) static const struct attribute_group mc13783_group_16chans = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) .attrs = mc13783_attr_16chans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /* last four channels may be occupied by the touchscreen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) static struct attribute *mc13783_attr_ts[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) &sensor_dev_attr_in12_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) &sensor_dev_attr_in13_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) &sensor_dev_attr_in14_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) &sensor_dev_attr_in15_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static const struct attribute_group mc13783_group_ts = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) .attrs = mc13783_attr_ts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static int mc13783_adc_use_touchscreen(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) struct mc13783_adc_priv *priv = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) unsigned flags = mc13xxx_get_flags(priv->mc13xxx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return flags & MC13XXX_USE_TOUCHSCREEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static int __init mc13783_adc_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) struct mc13783_adc_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) const struct platform_device_id *id = platform_get_device_id(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) char *dash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (!priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) priv->mc13xxx = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) snprintf(priv->name, ARRAY_SIZE(priv->name), "%s", id->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) dash = strchr(priv->name, '-');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (dash)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) *dash = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) platform_set_drvdata(pdev, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) /* Register sysfs hooks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) ret = sysfs_create_group(&pdev->dev.kobj, &mc13783_group_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) if (id->driver_data & MC13783_ADC_16CHANS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) ret = sysfs_create_group(&pdev->dev.kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) &mc13783_group_16chans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) goto out_err_create_16chans;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (!mc13783_adc_use_touchscreen(pdev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) ret = sysfs_create_group(&pdev->dev.kobj, &mc13783_group_ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) goto out_err_create_ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) priv->hwmon_dev = hwmon_device_register(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (IS_ERR(priv->hwmon_dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) ret = PTR_ERR(priv->hwmon_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) "hwmon_device_register failed with %d.\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) goto out_err_register;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) out_err_register:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (!mc13783_adc_use_touchscreen(pdev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) out_err_create_ts:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (id->driver_data & MC13783_ADC_16CHANS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_16chans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) out_err_create_16chans:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) static int mc13783_adc_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct mc13783_adc_priv *priv = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) kernel_ulong_t driver_data = platform_get_device_id(pdev)->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) hwmon_device_unregister(priv->hwmon_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) if (!mc13783_adc_use_touchscreen(pdev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (driver_data & MC13783_ADC_16CHANS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_16chans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) static const struct platform_device_id mc13783_adc_idtable[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) .name = "mc13783-adc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) .driver_data = MC13783_ADC_16CHANS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) .name = "mc13892-adc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) .driver_data = MC13783_ADC_BPDIV2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) /* sentinel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) MODULE_DEVICE_TABLE(platform, mc13783_adc_idtable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) static struct platform_driver mc13783_adc_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) .remove = mc13783_adc_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) .name = DRIVER_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) .id_table = mc13783_adc_idtable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) module_platform_driver_probe(mc13783_adc_driver, mc13783_adc_probe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) MODULE_DESCRIPTION("MC13783 ADC driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) MODULE_AUTHOR("Luotao Fu <l.fu@pengutronix.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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