| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Luotao Fu | 1024 | 68.96% | 1 | 6.25% |
| Uwe Kleine-König | 308 | 20.74% | 4 | 25.00% |
| Andrey Gusakov | 96 | 6.46% | 1 | 6.25% |
| Guenter Roeck | 42 | 2.83% | 3 | 18.75% |
| Michael Thalmeier | 4 | 0.27% | 1 | 6.25% |
| Eric Miao | 3 | 0.20% | 1 | 6.25% |
| Fabio Estevam | 2 | 0.13% | 1 | 6.25% |
| Julia Lawall | 2 | 0.13% | 1 | 6.25% |
| Linus Torvalds (pre-git) | 2 | 0.13% | 1 | 6.25% |
| Linus Torvalds | 1 | 0.07% | 1 | 6.25% |
| Jingoo Han | 1 | 0.07% | 1 | 6.25% |
| Total | 1485 | 16 |
// SPDX-License-Identifier: GPL-2.0+ /* * Driver for the ADC on Freescale Semiconductor MC13783 and MC13892 PMICs. * * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. * Copyright (C) 2009 Sascha Hauer, Pengutronix */ #include <linux/mfd/mc13xxx.h> #include <linux/platform_device.h> #include <linux/hwmon-sysfs.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/hwmon.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/err.h> #define DRIVER_NAME "mc13783-adc" /* platform device id driver data */ #define MC13783_ADC_16CHANS 1 #define MC13783_ADC_BPDIV2 2 struct mc13783_adc_priv { struct mc13xxx *mc13xxx; struct device *hwmon_dev; char name[PLATFORM_NAME_SIZE]; }; static ssize_t name_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct mc13783_adc_priv *priv = dev_get_drvdata(dev); return sprintf(buf, "%s\n", priv->name); } static int mc13783_adc_read(struct device *dev, struct device_attribute *devattr, unsigned int *val) { struct mc13783_adc_priv *priv = dev_get_drvdata(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); unsigned int channel = attr->index; unsigned int sample[4]; int ret; ret = mc13xxx_adc_do_conversion(priv->mc13xxx, MC13XXX_ADC_MODE_MULT_CHAN, channel, 0, 0, sample); if (ret) return ret; /* ADIN7 subchannels */ if (channel >= 16) channel = 7; channel &= 0x7; *val = (sample[channel % 4] >> (channel > 3 ? 14 : 2)) & 0x3ff; return 0; } static ssize_t mc13783_adc_bp_show(struct device *dev, struct device_attribute *devattr, char *buf) { unsigned val; struct platform_device *pdev = to_platform_device(dev); kernel_ulong_t driver_data = platform_get_device_id(pdev)->driver_data; int ret = mc13783_adc_read(dev, devattr, &val); if (ret) return ret; if (driver_data & MC13783_ADC_BPDIV2) val = DIV_ROUND_CLOSEST(val * 9, 2); else /* * BP (channel 2) reports with offset 2.4V to the actual value * to fit the input range of the ADC. unit = 2.25mV = 9/4 mV. */ val = DIV_ROUND_CLOSEST(val * 9, 4) + 2400; return sprintf(buf, "%u\n", val); } static ssize_t mc13783_adc_gp_show(struct device *dev, struct device_attribute *devattr, char *buf) { unsigned val; int ret = mc13783_adc_read(dev, devattr, &val); if (ret) return ret; /* * input range is [0, 2.3V], val has 10 bits, so each bit * is worth 9/4 mV. */ val = DIV_ROUND_CLOSEST(val * 9, 4); return sprintf(buf, "%u\n", val); } static ssize_t mc13783_adc_uid_show(struct device *dev, struct device_attribute *devattr, char *buf) { unsigned int val; struct platform_device *pdev = to_platform_device(dev); kernel_ulong_t driver_data = platform_get_device_id(pdev)->driver_data; int ret = mc13783_adc_read(dev, devattr, &val); if (ret) return ret; if (driver_data & MC13783_ADC_BPDIV2) /* MC13892 have 1/2 divider, input range is [0, 4.800V] */ val = DIV_ROUND_CLOSEST(val * 4800, 1024); else /* MC13783 have 0.9 divider, input range is [0, 2.555V] */ val = DIV_ROUND_CLOSEST(val * 2555, 1024); return sprintf(buf, "%u\n", val); } static ssize_t mc13783_adc_temp_show(struct device *dev, struct device_attribute *devattr, char *buf) { unsigned int val; struct platform_device *pdev = to_platform_device(dev); kernel_ulong_t driver_data = platform_get_device_id(pdev)->driver_data; int ret = mc13783_adc_read(dev, devattr, &val); if (ret) return ret; if (driver_data & MC13783_ADC_BPDIV2) { /* * MC13892: * Die Temperature Read Out Code at 25C 680 * Temperature change per LSB +0.4244C */ ret = DIV_ROUND_CLOSEST(-2635920 + val * 4244, 10); } else { /* * MC13783: * Die Temperature Read Out Code at 25C 282 * Temperature change per LSB -1.14C */ ret = 346480 - 1140 * val; } return sprintf(buf, "%d\n", ret); } static DEVICE_ATTR_RO(name); static SENSOR_DEVICE_ATTR_RO(in2_input, mc13783_adc_bp, 2); static SENSOR_DEVICE_ATTR_RO(in5_input, mc13783_adc_gp, 5); static SENSOR_DEVICE_ATTR_RO(in6_input, mc13783_adc_gp, 6); static SENSOR_DEVICE_ATTR_RO(in7_input, mc13783_adc_gp, 7); static SENSOR_DEVICE_ATTR_RO(in8_input, mc13783_adc_gp, 8); static SENSOR_DEVICE_ATTR_RO(in9_input, mc13783_adc_gp, 9); static SENSOR_DEVICE_ATTR_RO(in10_input, mc13783_adc_gp, 10); static SENSOR_DEVICE_ATTR_RO(in11_input, mc13783_adc_gp, 11); static SENSOR_DEVICE_ATTR_RO(in12_input, mc13783_adc_gp, 12); static SENSOR_DEVICE_ATTR_RO(in13_input, mc13783_adc_gp, 13); static SENSOR_DEVICE_ATTR_RO(in14_input, mc13783_adc_gp, 14); static SENSOR_DEVICE_ATTR_RO(in15_input, mc13783_adc_gp, 15); static SENSOR_DEVICE_ATTR_RO(in16_input, mc13783_adc_uid, 16); static SENSOR_DEVICE_ATTR_RO(temp1_input, mc13783_adc_temp, 17); static struct attribute *mc13783_attr_base[] = { &dev_attr_name.attr, &sensor_dev_attr_in2_input.dev_attr.attr, &sensor_dev_attr_in5_input.dev_attr.attr, &sensor_dev_attr_in6_input.dev_attr.attr, &sensor_dev_attr_in7_input.dev_attr.attr, &sensor_dev_attr_in16_input.dev_attr.attr, &sensor_dev_attr_temp1_input.dev_attr.attr, NULL }; static const struct attribute_group mc13783_group_base = { .attrs = mc13783_attr_base, }; /* these are only used if MC13783_ADC_16CHANS is provided in driver data */ static struct attribute *mc13783_attr_16chans[] = { &sensor_dev_attr_in8_input.dev_attr.attr, &sensor_dev_attr_in9_input.dev_attr.attr, &sensor_dev_attr_in10_input.dev_attr.attr, &sensor_dev_attr_in11_input.dev_attr.attr, NULL }; static const struct attribute_group mc13783_group_16chans = { .attrs = mc13783_attr_16chans, }; /* last four channels may be occupied by the touchscreen */ static struct attribute *mc13783_attr_ts[] = { &sensor_dev_attr_in12_input.dev_attr.attr, &sensor_dev_attr_in13_input.dev_attr.attr, &sensor_dev_attr_in14_input.dev_attr.attr, &sensor_dev_attr_in15_input.dev_attr.attr, NULL }; static const struct attribute_group mc13783_group_ts = { .attrs = mc13783_attr_ts, }; static int mc13783_adc_use_touchscreen(struct platform_device *pdev) { struct mc13783_adc_priv *priv = platform_get_drvdata(pdev); unsigned flags = mc13xxx_get_flags(priv->mc13xxx); return flags & MC13XXX_USE_TOUCHSCREEN; } static int __init mc13783_adc_probe(struct platform_device *pdev) { struct mc13783_adc_priv *priv; int ret; const struct platform_device_id *id = platform_get_device_id(pdev); char *dash; priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->mc13xxx = dev_get_drvdata(pdev->dev.parent); snprintf(priv->name, ARRAY_SIZE(priv->name), "%s", id->name); dash = strchr(priv->name, '-'); if (dash) *dash = '\0'; platform_set_drvdata(pdev, priv); /* Register sysfs hooks */ ret = sysfs_create_group(&pdev->dev.kobj, &mc13783_group_base); if (ret) return ret; if (id->driver_data & MC13783_ADC_16CHANS) { ret = sysfs_create_group(&pdev->dev.kobj, &mc13783_group_16chans); if (ret) goto out_err_create_16chans; } if (!mc13783_adc_use_touchscreen(pdev)) { ret = sysfs_create_group(&pdev->dev.kobj, &mc13783_group_ts); if (ret) goto out_err_create_ts; } priv->hwmon_dev = hwmon_device_register(&pdev->dev); if (IS_ERR(priv->hwmon_dev)) { ret = PTR_ERR(priv->hwmon_dev); dev_err(&pdev->dev, "hwmon_device_register failed with %d.\n", ret); goto out_err_register; } return 0; out_err_register: if (!mc13783_adc_use_touchscreen(pdev)) sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_ts); out_err_create_ts: if (id->driver_data & MC13783_ADC_16CHANS) sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_16chans); out_err_create_16chans: sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_base); return ret; } static void mc13783_adc_remove(struct platform_device *pdev) { struct mc13783_adc_priv *priv = platform_get_drvdata(pdev); kernel_ulong_t driver_data = platform_get_device_id(pdev)->driver_data; hwmon_device_unregister(priv->hwmon_dev); if (!mc13783_adc_use_touchscreen(pdev)) sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_ts); if (driver_data & MC13783_ADC_16CHANS) sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_16chans); sysfs_remove_group(&pdev->dev.kobj, &mc13783_group_base); } static const struct platform_device_id mc13783_adc_idtable[] = { { .name = "mc13783-adc", .driver_data = MC13783_ADC_16CHANS, }, { .name = "mc13892-adc", .driver_data = MC13783_ADC_BPDIV2, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(platform, mc13783_adc_idtable); static struct platform_driver mc13783_adc_driver = { .remove_new = mc13783_adc_remove, .driver = { .name = DRIVER_NAME, }, .id_table = mc13783_adc_idtable, }; module_platform_driver_probe(mc13783_adc_driver, mc13783_adc_probe); MODULE_DESCRIPTION("MC13783 ADC driver"); MODULE_AUTHOR("Luotao Fu <l.fu@pengutronix.de>"); MODULE_LICENSE("GPL");
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