Orange Pi5 kernel

Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards

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^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * max1111.c - +2.7V, Low-Power, Multichannel, Serial 8-bit ADCs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Based on arch/arm/mach-pxa/corgi_ssp.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Copyright (C) 2004-2005 Richard Purdie
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * Copyright (C) 2008 Marvell International Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *	Eric Miao <eric.miao@marvell.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^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/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/hwmon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/hwmon-sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/spi/spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) enum chips { max1110, max1111, max1112, max1113 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define MAX1111_TX_BUF_SIZE	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define MAX1111_RX_BUF_SIZE	2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) /* MAX1111 Commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define MAX1111_CTRL_PD0      (1u << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define MAX1111_CTRL_PD1      (1u << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define MAX1111_CTRL_SGL      (1u << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define MAX1111_CTRL_UNI      (1u << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define MAX1110_CTRL_SEL_SH   (4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define MAX1111_CTRL_SEL_SH   (5)	/* NOTE: bit 4 is ignored */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define MAX1111_CTRL_STR      (1u << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) struct max1111_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	struct spi_device	*spi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	struct device		*hwmon_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct spi_message	msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	struct spi_transfer	xfer[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	uint8_t tx_buf[MAX1111_TX_BUF_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	uint8_t rx_buf[MAX1111_RX_BUF_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	struct mutex		drvdata_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	/* protect msg, xfer and buffers from multiple access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	int			sel_sh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	int			lsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) static int max1111_read(struct device *dev, int channel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	struct max1111_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	uint8_t v1, v2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	/* writing to drvdata struct is not thread safe, wait on mutex */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	mutex_lock(&data->drvdata_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	data->tx_buf[0] = (channel << data->sel_sh) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		MAX1111_CTRL_PD0 | MAX1111_CTRL_PD1 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		MAX1111_CTRL_SGL | MAX1111_CTRL_UNI | MAX1111_CTRL_STR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	err = spi_sync(data->spi, &data->msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		dev_err(dev, "spi_sync failed with %d\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 		mutex_unlock(&data->drvdata_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	v1 = data->rx_buf[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	v2 = data->rx_buf[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	mutex_unlock(&data->drvdata_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	if ((v1 & 0xc0) || (v2 & 0x3f))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	return (v1 << 2) | (v2 >> 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) #ifdef CONFIG_SHARPSL_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) static struct max1111_data *the_max1111;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) int max1111_read_channel(int channel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	if (!the_max1111 || !the_max1111->spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	return max1111_read(&the_max1111->spi->dev, channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) EXPORT_SYMBOL(max1111_read_channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94)  * NOTE: SPI devices do not have a default 'name' attribute, which is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95)  * likely to be used by hwmon applications to distinguish between
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96)  * different devices, explicitly add a name attribute here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) static ssize_t name_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 			 struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	return sprintf(buf, "%s\n", to_spi_device(dev)->modalias);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static ssize_t show_adc(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 			struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	struct max1111_data *data = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	int channel = to_sensor_dev_attr(attr)->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	ret = max1111_read(dev, channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	 * Assume the reference voltage to be 2.048V or 4.096V, with an 8-bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	 * sample. The LSB weight is 8mV or 16mV depending on the chip type.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	return sprintf(buf, "%d\n", ret * data->lsb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #define MAX1111_ADC_ATTR(_id)		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	SENSOR_DEVICE_ATTR(in##_id##_input, S_IRUGO, show_adc, NULL, _id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static DEVICE_ATTR_RO(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static MAX1111_ADC_ATTR(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static MAX1111_ADC_ATTR(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static MAX1111_ADC_ATTR(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static MAX1111_ADC_ATTR(3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static MAX1111_ADC_ATTR(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static MAX1111_ADC_ATTR(5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static MAX1111_ADC_ATTR(6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static MAX1111_ADC_ATTR(7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static struct attribute *max1111_attributes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	&dev_attr_name.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	&sensor_dev_attr_in0_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	&sensor_dev_attr_in1_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	&sensor_dev_attr_in2_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	&sensor_dev_attr_in3_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static const struct attribute_group max1111_attr_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	.attrs	= max1111_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static struct attribute *max1110_attributes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	&sensor_dev_attr_in4_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	&sensor_dev_attr_in5_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	&sensor_dev_attr_in6_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	&sensor_dev_attr_in7_input.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static const struct attribute_group max1110_attr_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	.attrs	= max1110_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static int setup_transfer(struct max1111_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	struct spi_message *m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	struct spi_transfer *x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	m = &data->msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	x = &data->xfer[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	spi_message_init(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	x->tx_buf = &data->tx_buf[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	x->len = MAX1111_TX_BUF_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	spi_message_add_tail(x, m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	x++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	x->rx_buf = &data->rx_buf[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	x->len = MAX1111_RX_BUF_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	spi_message_add_tail(x, m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static int max1111_probe(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	enum chips chip = spi_get_device_id(spi)->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	struct max1111_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	spi->bits_per_word = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	spi->mode = SPI_MODE_0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	err = spi_setup(spi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	data = devm_kzalloc(&spi->dev, sizeof(struct max1111_data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	if (data == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	switch (chip) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	case max1110:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		data->lsb = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		data->sel_sh = MAX1110_CTRL_SEL_SH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	case max1111:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		data->lsb = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		data->sel_sh = MAX1111_CTRL_SEL_SH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	case max1112:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		data->lsb = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		data->sel_sh = MAX1110_CTRL_SEL_SH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	case max1113:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		data->lsb = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		data->sel_sh = MAX1111_CTRL_SEL_SH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	err = setup_transfer(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	mutex_init(&data->drvdata_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	data->spi = spi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	spi_set_drvdata(spi, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	err = sysfs_create_group(&spi->dev.kobj, &max1111_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		dev_err(&spi->dev, "failed to create attribute group\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	if (chip == max1110 || chip == max1112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		err = sysfs_create_group(&spi->dev.kobj, &max1110_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 			dev_err(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 				"failed to create extended attribute group\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 			goto err_remove;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	data->hwmon_dev = hwmon_device_register(&spi->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	if (IS_ERR(data->hwmon_dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		dev_err(&spi->dev, "failed to create hwmon device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		err = PTR_ERR(data->hwmon_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		goto err_remove;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) #ifdef CONFIG_SHARPSL_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	the_max1111 = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) err_remove:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	sysfs_remove_group(&spi->dev.kobj, &max1110_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	sysfs_remove_group(&spi->dev.kobj, &max1111_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static int max1111_remove(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	struct max1111_data *data = spi_get_drvdata(spi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) #ifdef CONFIG_SHARPSL_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	the_max1111 = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	hwmon_device_unregister(data->hwmon_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	sysfs_remove_group(&spi->dev.kobj, &max1110_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	sysfs_remove_group(&spi->dev.kobj, &max1111_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	mutex_destroy(&data->drvdata_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static const struct spi_device_id max1111_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	{ "max1110", max1110 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	{ "max1111", max1111 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	{ "max1112", max1112 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	{ "max1113", max1113 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) MODULE_DEVICE_TABLE(spi, max1111_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) static struct spi_driver max1111_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	.driver		= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		.name	= "max1111",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	.id_table	= max1111_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	.probe		= max1111_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	.remove		= max1111_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) module_spi_driver(max1111_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) MODULE_DESCRIPTION("MAX1110/MAX1111/MAX1112/MAX1113 ADC Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) MODULE_LICENSE("GPL");