summaryrefslogtreecommitdiff
path: root/sys-kernel/linux-image-redcore-lts/files/5.10-add-sbtsi_driver.patch
diff options
context:
space:
mode:
Diffstat (limited to 'sys-kernel/linux-image-redcore-lts/files/5.10-add-sbtsi_driver.patch')
-rw-r--r--sys-kernel/linux-image-redcore-lts/files/5.10-add-sbtsi_driver.patch285
1 files changed, 0 insertions, 285 deletions
diff --git a/sys-kernel/linux-image-redcore-lts/files/5.10-add-sbtsi_driver.patch b/sys-kernel/linux-image-redcore-lts/files/5.10-add-sbtsi_driver.patch
deleted file mode 100644
index 13035071..00000000
--- a/sys-kernel/linux-image-redcore-lts/files/5.10-add-sbtsi_driver.patch
+++ /dev/null
@@ -1,285 +0,0 @@
-diff -Naur linux-5.10.2/drivers/hwmon/Kconfig linux-5.10.2-p/drivers/hwmon/Kconfig
---- linux-5.10.2/drivers/hwmon/Kconfig 2020-12-21 13:30:08.000000000 +0100
-+++ linux-5.10.2-p/drivers/hwmon/Kconfig 2020-12-25 13:49:22.911559911 +0100
-@@ -1499,6 +1499,16 @@
- This driver can also be built as a module. If so, the module
- will be called sl28cpld-hwmon.
-
-+config SENSORS_SBTSI
-+ tristate "Emulated SB-TSI temperature sensor"
-+ depends on I2C
-+ help
-+ If you say yes here you get support for emulated temperature
-+ sensors on AMD SoCs with SB-TSI interface connected to a BMC device.
-+
-+ This driver can also be built as a module. If so, the module will
-+ be called sbtsi_temp.
-+
- config SENSORS_SHT15
- tristate "Sensiron humidity and temperature sensors. SHT15 and compat."
- depends on GPIOLIB || COMPILE_TEST
-diff -Naur linux-5.10.2/drivers/hwmon/Makefile linux-5.10.2-p/drivers/hwmon/Makefile
---- linux-5.10.2/drivers/hwmon/Makefile 2020-12-21 13:30:08.000000000 +0100
-+++ linux-5.10.2-p/drivers/hwmon/Makefile 2020-12-25 13:49:22.911559911 +0100
-@@ -158,6 +158,7 @@
- obj-$(CONFIG_SENSORS_PWM_FAN) += pwm-fan.o
- obj-$(CONFIG_SENSORS_RASPBERRYPI_HWMON) += raspberrypi-hwmon.o
- obj-$(CONFIG_SENSORS_S3C) += s3c-hwmon.o
-+obj-$(CONFIG_SENSORS_SBTSI) += sbtsi_temp.o
- obj-$(CONFIG_SENSORS_SCH56XX_COMMON)+= sch56xx-common.o
- obj-$(CONFIG_SENSORS_SCH5627) += sch5627.o
- obj-$(CONFIG_SENSORS_SCH5636) += sch5636.o
-diff -Naur linux-5.10.2/drivers/hwmon/sbtsi_temp.c linux-5.10.2-p/drivers/hwmon/sbtsi_temp.c
---- linux-5.10.2/drivers/hwmon/sbtsi_temp.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-5.10.2-p/drivers/hwmon/sbtsi_temp.c 2020-12-25 13:49:22.911559911 +0100
-@@ -0,0 +1,250 @@
-+// SPDX-License-Identifier: GPL-2.0-or-later
-+/*
-+ * sbtsi_temp.c - hwmon driver for a SBI Temperature Sensor Interface (SB-TSI)
-+ * compliant AMD SoC temperature device.
-+ *
-+ * Copyright (c) 2020, Google Inc.
-+ * Copyright (c) 2020, Kun Yi <kunyi@google.com>
-+ */
-+
-+#include <linux/err.h>
-+#include <linux/i2c.h>
-+#include <linux/init.h>
-+#include <linux/hwmon.h>
-+#include <linux/module.h>
-+#include <linux/mutex.h>
-+#include <linux/of_device.h>
-+#include <linux/of.h>
-+
-+/*
-+ * SB-TSI registers only support SMBus byte data access. "_INT" registers are
-+ * the integer part of a temperature value or limit, and "_DEC" registers are
-+ * corresponding decimal parts.
-+ */
-+#define SBTSI_REG_TEMP_INT 0x01 /* RO */
-+#define SBTSI_REG_STATUS 0x02 /* RO */
-+#define SBTSI_REG_CONFIG 0x03 /* RO */
-+#define SBTSI_REG_TEMP_HIGH_INT 0x07 /* RW */
-+#define SBTSI_REG_TEMP_LOW_INT 0x08 /* RW */
-+#define SBTSI_REG_TEMP_DEC 0x10 /* RW */
-+#define SBTSI_REG_TEMP_HIGH_DEC 0x13 /* RW */
-+#define SBTSI_REG_TEMP_LOW_DEC 0x14 /* RW */
-+
-+#define SBTSI_CONFIG_READ_ORDER_SHIFT 5
-+
-+#define SBTSI_TEMP_MIN 0
-+#define SBTSI_TEMP_MAX 255875
-+
-+/* Each client has this additional data */
-+struct sbtsi_data {
-+ struct i2c_client *client;
-+ struct mutex lock;
-+};
-+
-+/*
-+ * From SB-TSI spec: CPU temperature readings and limit registers encode the
-+ * temperature in increments of 0.125 from 0 to 255.875. The "high byte"
-+ * register encodes the base-2 of the integer portion, and the upper 3 bits of
-+ * the "low byte" encode in base-2 the decimal portion.
-+ *
-+ * e.g. INT=0x19, DEC=0x20 represents 25.125 degrees Celsius
-+ *
-+ * Therefore temperature in millidegree Celsius =
-+ * (INT + DEC / 256) * 1000 = (INT * 8 + DEC / 32) * 125
-+ */
-+static inline int sbtsi_reg_to_mc(s32 integer, s32 decimal)
-+{
-+ return ((integer << 3) + (decimal >> 5)) * 125;
-+}
-+
-+/*
-+ * Inversely, given temperature in millidegree Celsius
-+ * INT = (TEMP / 125) / 8
-+ * DEC = ((TEMP / 125) % 8) * 32
-+ * Caller have to make sure temp doesn't exceed 255875, the max valid value.
-+ */
-+static inline void sbtsi_mc_to_reg(s32 temp, u8 *integer, u8 *decimal)
-+{
-+ temp /= 125;
-+ *integer = temp >> 3;
-+ *decimal = (temp & 0x7) << 5;
-+}
-+
-+static int sbtsi_read(struct device *dev, enum hwmon_sensor_types type,
-+ u32 attr, int channel, long *val)
-+{
-+ struct sbtsi_data *data = dev_get_drvdata(dev);
-+ s32 temp_int, temp_dec;
-+ int err;
-+
-+ switch (attr) {
-+ case hwmon_temp_input:
-+ /*
-+ * ReadOrder bit specifies the reading order of integer and
-+ * decimal part of CPU temp for atomic reads. If bit == 0,
-+ * reading integer part triggers latching of the decimal part,
-+ * so integer part should be read first. If bit == 1, read
-+ * order should be reversed.
-+ */
-+ err = i2c_smbus_read_byte_data(data->client, SBTSI_REG_CONFIG);
-+ if (err < 0)
-+ return err;
-+
-+ mutex_lock(&data->lock);
-+ if (err & BIT(SBTSI_CONFIG_READ_ORDER_SHIFT)) {
-+ temp_dec = i2c_smbus_read_byte_data(data->client, SBTSI_REG_TEMP_DEC);
-+ temp_int = i2c_smbus_read_byte_data(data->client, SBTSI_REG_TEMP_INT);
-+ } else {
-+ temp_int = i2c_smbus_read_byte_data(data->client, SBTSI_REG_TEMP_INT);
-+ temp_dec = i2c_smbus_read_byte_data(data->client, SBTSI_REG_TEMP_DEC);
-+ }
-+ mutex_unlock(&data->lock);
-+ break;
-+ case hwmon_temp_max:
-+ mutex_lock(&data->lock);
-+ temp_int = i2c_smbus_read_byte_data(data->client, SBTSI_REG_TEMP_HIGH_INT);
-+ temp_dec = i2c_smbus_read_byte_data(data->client, SBTSI_REG_TEMP_HIGH_DEC);
-+ mutex_unlock(&data->lock);
-+ break;
-+ case hwmon_temp_min:
-+ mutex_lock(&data->lock);
-+ temp_int = i2c_smbus_read_byte_data(data->client, SBTSI_REG_TEMP_LOW_INT);
-+ temp_dec = i2c_smbus_read_byte_data(data->client, SBTSI_REG_TEMP_LOW_DEC);
-+ mutex_unlock(&data->lock);
-+ break;
-+ default:
-+ return -EINVAL;
-+ }
-+
-+
-+ if (temp_int < 0)
-+ return temp_int;
-+ if (temp_dec < 0)
-+ return temp_dec;
-+
-+ *val = sbtsi_reg_to_mc(temp_int, temp_dec);
-+
-+ return 0;
-+}
-+
-+static int sbtsi_write(struct device *dev, enum hwmon_sensor_types type,
-+ u32 attr, int channel, long val)
-+{
-+ struct sbtsi_data *data = dev_get_drvdata(dev);
-+ int reg_int, reg_dec, err;
-+ u8 temp_int, temp_dec;
-+
-+ switch (attr) {
-+ case hwmon_temp_max:
-+ reg_int = SBTSI_REG_TEMP_HIGH_INT;
-+ reg_dec = SBTSI_REG_TEMP_HIGH_DEC;
-+ break;
-+ case hwmon_temp_min:
-+ reg_int = SBTSI_REG_TEMP_LOW_INT;
-+ reg_dec = SBTSI_REG_TEMP_LOW_DEC;
-+ break;
-+ default:
-+ return -EINVAL;
-+ }
-+
-+ val = clamp_val(val, SBTSI_TEMP_MIN, SBTSI_TEMP_MAX);
-+ sbtsi_mc_to_reg(val, &temp_int, &temp_dec);
-+
-+ mutex_lock(&data->lock);
-+ err = i2c_smbus_write_byte_data(data->client, reg_int, temp_int);
-+ if (err)
-+ goto exit;
-+
-+ err = i2c_smbus_write_byte_data(data->client, reg_dec, temp_dec);
-+exit:
-+ mutex_unlock(&data->lock);
-+ return err;
-+}
-+
-+static umode_t sbtsi_is_visible(const void *data,
-+ enum hwmon_sensor_types type,
-+ u32 attr, int channel)
-+{
-+ switch (type) {
-+ case hwmon_temp:
-+ switch (attr) {
-+ case hwmon_temp_input:
-+ return 0444;
-+ case hwmon_temp_min:
-+ return 0644;
-+ case hwmon_temp_max:
-+ return 0644;
-+ }
-+ break;
-+ default:
-+ break;
-+ }
-+ return 0;
-+}
-+
-+static const struct hwmon_channel_info *sbtsi_info[] = {
-+ HWMON_CHANNEL_INFO(chip, HWMON_C_REGISTER_TZ),
-+ HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX),
-+ NULL
-+};
-+
-+static const struct hwmon_ops sbtsi_hwmon_ops = {
-+ .is_visible = sbtsi_is_visible,
-+ .read = sbtsi_read,
-+ .write = sbtsi_write,
-+};
-+
-+static const struct hwmon_chip_info sbtsi_chip_info = {
-+ .ops = &sbtsi_hwmon_ops,
-+ .info = sbtsi_info,
-+};
-+
-+static int sbtsi_probe(struct i2c_client *client,
-+ const struct i2c_device_id *id)
-+{
-+ struct device *dev = &client->dev;
-+ struct device *hwmon_dev;
-+ struct sbtsi_data *data;
-+
-+ data = devm_kzalloc(dev, sizeof(struct sbtsi_data), GFP_KERNEL);
-+ if (!data)
-+ return -ENOMEM;
-+
-+ data->client = client;
-+ mutex_init(&data->lock);
-+
-+ hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, &sbtsi_chip_info,
-+ NULL);
-+
-+ return PTR_ERR_OR_ZERO(hwmon_dev);
-+}
-+
-+static const struct i2c_device_id sbtsi_id[] = {
-+ {"sbtsi", 0},
-+ {}
-+};
-+MODULE_DEVICE_TABLE(i2c, sbtsi_id);
-+
-+static const struct of_device_id __maybe_unused sbtsi_of_match[] = {
-+ {
-+ .compatible = "amd,sbtsi",
-+ },
-+ { },
-+};
-+MODULE_DEVICE_TABLE(of, sbtsi_of_match);
-+
-+static struct i2c_driver sbtsi_driver = {
-+ .class = I2C_CLASS_HWMON,
-+ .driver = {
-+ .name = "sbtsi",
-+ .of_match_table = of_match_ptr(sbtsi_of_match),
-+ },
-+ .probe = sbtsi_probe,
-+ .id_table = sbtsi_id,
-+};
-+
-+module_i2c_driver(sbtsi_driver);
-+
-+MODULE_AUTHOR("Kun Yi <kunyi@google.com>");
-+MODULE_DESCRIPTION("Hwmon driver for AMD SB-TSI emulated sensor");
-+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 04:43:40 +0000