From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/drivers/staging/iio/adc/ad7816.c | 124 ++++++++++++++++++++++-------------------
1 files changed, 66 insertions(+), 58 deletions(-)
diff --git a/kernel/drivers/staging/iio/adc/ad7816.c b/kernel/drivers/staging/iio/adc/ad7816.c
index bf76a86..6c14d7b 100644
--- a/kernel/drivers/staging/iio/adc/ad7816.c
+++ b/kernel/drivers/staging/iio/adc/ad7816.c
@@ -1,13 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* AD7816 digital temperature sensor driver supporting AD7816/7/8
*
* Copyright 2010 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
*/
#include <linux/interrupt.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/slab.h>
@@ -43,13 +42,20 @@
*/
struct ad7816_chip_info {
+ kernel_ulong_t id;
struct spi_device *spi_dev;
- u16 rdwr_pin;
- u16 convert_pin;
- u16 busy_pin;
+ struct gpio_desc *rdwr_pin;
+ struct gpio_desc *convert_pin;
+ struct gpio_desc *busy_pin;
u8 oti_data[AD7816_CS_MAX + 1];
u8 channel_id; /* 0 always be temperature */
u8 mode;
+};
+
+enum ad7816_type {
+ ID_AD7816,
+ ID_AD7817,
+ ID_AD7818,
};
/*
@@ -58,31 +64,33 @@
static int ad7816_spi_read(struct ad7816_chip_info *chip, u16 *data)
{
struct spi_device *spi_dev = chip->spi_dev;
- int ret = 0;
+ int ret;
__be16 buf;
- gpio_set_value(chip->rdwr_pin, 1);
- gpio_set_value(chip->rdwr_pin, 0);
+ gpiod_set_value(chip->rdwr_pin, 1);
+ gpiod_set_value(chip->rdwr_pin, 0);
ret = spi_write(spi_dev, &chip->channel_id, sizeof(chip->channel_id));
if (ret < 0) {
dev_err(&spi_dev->dev, "SPI channel setting error\n");
return ret;
}
- gpio_set_value(chip->rdwr_pin, 1);
+ gpiod_set_value(chip->rdwr_pin, 1);
if (chip->mode == AD7816_PD) { /* operating mode 2 */
- gpio_set_value(chip->convert_pin, 1);
- gpio_set_value(chip->convert_pin, 0);
+ gpiod_set_value(chip->convert_pin, 1);
+ gpiod_set_value(chip->convert_pin, 0);
} else { /* operating mode 1 */
- gpio_set_value(chip->convert_pin, 0);
- gpio_set_value(chip->convert_pin, 1);
+ gpiod_set_value(chip->convert_pin, 0);
+ gpiod_set_value(chip->convert_pin, 1);
}
- while (gpio_get_value(chip->busy_pin))
- cpu_relax();
+ if (chip->id == ID_AD7816 || chip->id == ID_AD7817) {
+ while (gpiod_get_value(chip->busy_pin))
+ cpu_relax();
+ }
- gpio_set_value(chip->rdwr_pin, 0);
- gpio_set_value(chip->rdwr_pin, 1);
+ gpiod_set_value(chip->rdwr_pin, 0);
+ gpiod_set_value(chip->rdwr_pin, 1);
ret = spi_read(spi_dev, &buf, sizeof(*data));
if (ret < 0) {
dev_err(&spi_dev->dev, "SPI data read error\n");
@@ -97,10 +105,10 @@
static int ad7816_spi_write(struct ad7816_chip_info *chip, u8 data)
{
struct spi_device *spi_dev = chip->spi_dev;
- int ret = 0;
+ int ret;
- gpio_set_value(chip->rdwr_pin, 1);
- gpio_set_value(chip->rdwr_pin, 0);
+ gpiod_set_value(chip->rdwr_pin, 1);
+ gpiod_set_value(chip->rdwr_pin, 0);
ret = spi_write(spi_dev, &data, sizeof(data));
if (ret < 0)
dev_err(&spi_dev->dev, "SPI oti data write error\n");
@@ -129,10 +137,10 @@
struct ad7816_chip_info *chip = iio_priv(indio_dev);
if (strcmp(buf, "full")) {
- gpio_set_value(chip->rdwr_pin, 1);
+ gpiod_set_value(chip->rdwr_pin, 1);
chip->mode = AD7816_FULL;
} else {
- gpio_set_value(chip->rdwr_pin, 0);
+ gpiod_set_value(chip->rdwr_pin, 0);
chip->mode = AD7816_PD;
}
@@ -222,7 +230,7 @@
value = (s8)((data >> AD7816_TEMP_FLOAT_OFFSET) - 103);
data &= AD7816_TEMP_FLOAT_MASK;
if (value < 0)
- data = (1 << AD7816_TEMP_FLOAT_OFFSET) - data;
+ data = BIT(AD7816_TEMP_FLOAT_OFFSET) - data;
return sprintf(buf, "%d.%.2d\n", value, data * 25);
}
return sprintf(buf, "%u\n", data);
@@ -345,14 +353,7 @@
{
struct ad7816_chip_info *chip;
struct iio_dev *indio_dev;
- unsigned short *pins = dev_get_platdata(&spi_dev->dev);
- int ret = 0;
- int i;
-
- if (!pins) {
- dev_err(&spi_dev->dev, "No necessary GPIO platform data.\n");
- return -EINVAL;
- }
+ int i, ret;
indio_dev = devm_iio_device_alloc(&spi_dev->dev, sizeof(*chip));
if (!indio_dev)
@@ -364,37 +365,35 @@
chip->spi_dev = spi_dev;
for (i = 0; i <= AD7816_CS_MAX; i++)
chip->oti_data[i] = 203;
- chip->rdwr_pin = pins[0];
- chip->convert_pin = pins[1];
- chip->busy_pin = pins[2];
- ret = devm_gpio_request(&spi_dev->dev, chip->rdwr_pin,
- spi_get_device_id(spi_dev)->name);
- if (ret) {
- dev_err(&spi_dev->dev, "Fail to request rdwr gpio PIN %d.\n",
- chip->rdwr_pin);
+ chip->id = spi_get_device_id(spi_dev)->driver_data;
+ chip->rdwr_pin = devm_gpiod_get(&spi_dev->dev, "rdwr", GPIOD_OUT_HIGH);
+ if (IS_ERR(chip->rdwr_pin)) {
+ ret = PTR_ERR(chip->rdwr_pin);
+ dev_err(&spi_dev->dev, "Failed to request rdwr GPIO: %d\n",
+ ret);
return ret;
}
- gpio_direction_input(chip->rdwr_pin);
- ret = devm_gpio_request(&spi_dev->dev, chip->convert_pin,
- spi_get_device_id(spi_dev)->name);
- if (ret) {
- dev_err(&spi_dev->dev, "Fail to request convert gpio PIN %d.\n",
- chip->convert_pin);
+ chip->convert_pin = devm_gpiod_get(&spi_dev->dev, "convert",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(chip->convert_pin)) {
+ ret = PTR_ERR(chip->convert_pin);
+ dev_err(&spi_dev->dev, "Failed to request convert GPIO: %d\n",
+ ret);
return ret;
}
- gpio_direction_input(chip->convert_pin);
- ret = devm_gpio_request(&spi_dev->dev, chip->busy_pin,
- spi_get_device_id(spi_dev)->name);
- if (ret) {
- dev_err(&spi_dev->dev, "Fail to request busy gpio PIN %d.\n",
- chip->busy_pin);
- return ret;
+ if (chip->id == ID_AD7816 || chip->id == ID_AD7817) {
+ chip->busy_pin = devm_gpiod_get(&spi_dev->dev, "busy",
+ GPIOD_IN);
+ if (IS_ERR(chip->busy_pin)) {
+ ret = PTR_ERR(chip->busy_pin);
+ dev_err(&spi_dev->dev, "Failed to request busy GPIO: %d\n",
+ ret);
+ return ret;
+ }
}
- gpio_direction_input(chip->busy_pin);
indio_dev->name = spi_get_device_id(spi_dev)->name;
- indio_dev->dev.parent = &spi_dev->dev;
indio_dev->info = &ad7816_info;
indio_dev->modes = INDIO_DIRECT_MODE;
@@ -420,10 +419,18 @@
return 0;
}
+static const struct of_device_id ad7816_of_match[] = {
+ { .compatible = "adi,ad7816", },
+ { .compatible = "adi,ad7817", },
+ { .compatible = "adi,ad7818", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ad7816_of_match);
+
static const struct spi_device_id ad7816_id[] = {
- { "ad7816", 0 },
- { "ad7817", 0 },
- { "ad7818", 0 },
+ { "ad7816", ID_AD7816 },
+ { "ad7817", ID_AD7817 },
+ { "ad7818", ID_AD7818 },
{}
};
@@ -432,6 +439,7 @@
static struct spi_driver ad7816_driver = {
.driver = {
.name = "ad7816",
+ .of_match_table = ad7816_of_match,
},
.probe = ad7816_probe,
.id_table = ad7816_id,
--
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