[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/drivers/hwmon/pmbus/ucd9000.c b/src/kernel/linux/v4.19/drivers/hwmon/pmbus/ucd9000.c
new file mode 100644
index 0000000..ae93885
--- /dev/null
+++ b/src/kernel/linux/v4.19/drivers/hwmon/pmbus/ucd9000.c
@@ -0,0 +1,632 @@
+/*
+ * Hardware monitoring driver for UCD90xxx Sequencer and System Health
+ * Controller series
+ *
+ * Copyright (C) 2011 Ericsson AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/debugfs.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/pmbus.h>
+#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
+#include "pmbus.h"
+
+enum chips { ucd9000, ucd90120, ucd90124, ucd90160, ucd9090, ucd90910 };
+
+#define UCD9000_MONITOR_CONFIG 0xd5
+#define UCD9000_NUM_PAGES 0xd6
+#define UCD9000_FAN_CONFIG_INDEX 0xe7
+#define UCD9000_FAN_CONFIG 0xe8
+#define UCD9000_MFR_STATUS 0xf3
+#define UCD9000_GPIO_SELECT 0xfa
+#define UCD9000_GPIO_CONFIG 0xfb
+#define UCD9000_DEVICE_ID 0xfd
+
+/* GPIO CONFIG bits */
+#define UCD9000_GPIO_CONFIG_ENABLE BIT(0)
+#define UCD9000_GPIO_CONFIG_OUT_ENABLE BIT(1)
+#define UCD9000_GPIO_CONFIG_OUT_VALUE BIT(2)
+#define UCD9000_GPIO_CONFIG_STATUS BIT(3)
+#define UCD9000_GPIO_INPUT 0
+#define UCD9000_GPIO_OUTPUT 1
+
+#define UCD9000_MON_TYPE(x) (((x) >> 5) & 0x07)
+#define UCD9000_MON_PAGE(x) ((x) & 0x0f)
+
+#define UCD9000_MON_VOLTAGE 1
+#define UCD9000_MON_TEMPERATURE 2
+#define UCD9000_MON_CURRENT 3
+#define UCD9000_MON_VOLTAGE_HW 4
+
+#define UCD9000_NUM_FAN 4
+
+#define UCD9000_GPIO_NAME_LEN 16
+#define UCD9090_NUM_GPIOS 23
+#define UCD901XX_NUM_GPIOS 26
+#define UCD90910_NUM_GPIOS 26
+
+#define UCD9000_DEBUGFS_NAME_LEN 24
+#define UCD9000_GPI_COUNT 8
+
+struct ucd9000_data {
+ u8 fan_data[UCD9000_NUM_FAN][I2C_SMBUS_BLOCK_MAX];
+ struct pmbus_driver_info info;
+#ifdef CONFIG_GPIOLIB
+ struct gpio_chip gpio;
+#endif
+ struct dentry *debugfs;
+};
+#define to_ucd9000_data(_info) container_of(_info, struct ucd9000_data, info)
+
+struct ucd9000_debugfs_entry {
+ struct i2c_client *client;
+ u8 index;
+};
+
+static int ucd9000_get_fan_config(struct i2c_client *client, int fan)
+{
+ int fan_config = 0;
+ struct ucd9000_data *data
+ = to_ucd9000_data(pmbus_get_driver_info(client));
+
+ if (data->fan_data[fan][3] & 1)
+ fan_config |= PB_FAN_2_INSTALLED; /* Use lower bit position */
+
+ /* Pulses/revolution */
+ fan_config |= (data->fan_data[fan][3] & 0x06) >> 1;
+
+ return fan_config;
+}
+
+static int ucd9000_read_byte_data(struct i2c_client *client, int page, int reg)
+{
+ int ret = 0;
+ int fan_config;
+
+ switch (reg) {
+ case PMBUS_FAN_CONFIG_12:
+ if (page > 0)
+ return -ENXIO;
+
+ ret = ucd9000_get_fan_config(client, 0);
+ if (ret < 0)
+ return ret;
+ fan_config = ret << 4;
+ ret = ucd9000_get_fan_config(client, 1);
+ if (ret < 0)
+ return ret;
+ fan_config |= ret;
+ ret = fan_config;
+ break;
+ case PMBUS_FAN_CONFIG_34:
+ if (page > 0)
+ return -ENXIO;
+
+ ret = ucd9000_get_fan_config(client, 2);
+ if (ret < 0)
+ return ret;
+ fan_config = ret << 4;
+ ret = ucd9000_get_fan_config(client, 3);
+ if (ret < 0)
+ return ret;
+ fan_config |= ret;
+ ret = fan_config;
+ break;
+ default:
+ ret = -ENODATA;
+ break;
+ }
+ return ret;
+}
+
+static const struct i2c_device_id ucd9000_id[] = {
+ {"ucd9000", ucd9000},
+ {"ucd90120", ucd90120},
+ {"ucd90124", ucd90124},
+ {"ucd90160", ucd90160},
+ {"ucd9090", ucd9090},
+ {"ucd90910", ucd90910},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, ucd9000_id);
+
+static const struct of_device_id ucd9000_of_match[] = {
+ {
+ .compatible = "ti,ucd9000",
+ .data = (void *)ucd9000
+ },
+ {
+ .compatible = "ti,ucd90120",
+ .data = (void *)ucd90120
+ },
+ {
+ .compatible = "ti,ucd90124",
+ .data = (void *)ucd90124
+ },
+ {
+ .compatible = "ti,ucd90160",
+ .data = (void *)ucd90160
+ },
+ {
+ .compatible = "ti,ucd9090",
+ .data = (void *)ucd9090
+ },
+ {
+ .compatible = "ti,ucd90910",
+ .data = (void *)ucd90910
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, ucd9000_of_match);
+
+#ifdef CONFIG_GPIOLIB
+static int ucd9000_gpio_read_config(struct i2c_client *client,
+ unsigned int offset)
+{
+ int ret;
+
+ /* No page set required */
+ ret = i2c_smbus_write_byte_data(client, UCD9000_GPIO_SELECT, offset);
+ if (ret < 0)
+ return ret;
+
+ return i2c_smbus_read_byte_data(client, UCD9000_GPIO_CONFIG);
+}
+
+static int ucd9000_gpio_get(struct gpio_chip *gc, unsigned int offset)
+{
+ struct i2c_client *client = gpiochip_get_data(gc);
+ int ret;
+
+ ret = ucd9000_gpio_read_config(client, offset);
+ if (ret < 0)
+ return ret;
+
+ return !!(ret & UCD9000_GPIO_CONFIG_STATUS);
+}
+
+static void ucd9000_gpio_set(struct gpio_chip *gc, unsigned int offset,
+ int value)
+{
+ struct i2c_client *client = gpiochip_get_data(gc);
+ int ret;
+
+ ret = ucd9000_gpio_read_config(client, offset);
+ if (ret < 0) {
+ dev_dbg(&client->dev, "failed to read GPIO %d config: %d\n",
+ offset, ret);
+ return;
+ }
+
+ if (value) {
+ if (ret & UCD9000_GPIO_CONFIG_STATUS)
+ return;
+
+ ret |= UCD9000_GPIO_CONFIG_STATUS;
+ } else {
+ if (!(ret & UCD9000_GPIO_CONFIG_STATUS))
+ return;
+
+ ret &= ~UCD9000_GPIO_CONFIG_STATUS;
+ }
+
+ ret |= UCD9000_GPIO_CONFIG_ENABLE;
+
+ /* Page set not required */
+ ret = i2c_smbus_write_byte_data(client, UCD9000_GPIO_CONFIG, ret);
+ if (ret < 0) {
+ dev_dbg(&client->dev, "Failed to write GPIO %d config: %d\n",
+ offset, ret);
+ return;
+ }
+
+ ret &= ~UCD9000_GPIO_CONFIG_ENABLE;
+
+ ret = i2c_smbus_write_byte_data(client, UCD9000_GPIO_CONFIG, ret);
+ if (ret < 0)
+ dev_dbg(&client->dev, "Failed to write GPIO %d config: %d\n",
+ offset, ret);
+}
+
+static int ucd9000_gpio_get_direction(struct gpio_chip *gc,
+ unsigned int offset)
+{
+ struct i2c_client *client = gpiochip_get_data(gc);
+ int ret;
+
+ ret = ucd9000_gpio_read_config(client, offset);
+ if (ret < 0)
+ return ret;
+
+ return !(ret & UCD9000_GPIO_CONFIG_OUT_ENABLE);
+}
+
+static int ucd9000_gpio_set_direction(struct gpio_chip *gc,
+ unsigned int offset, bool direction_out,
+ int requested_out)
+{
+ struct i2c_client *client = gpiochip_get_data(gc);
+ int ret, config, out_val;
+
+ ret = ucd9000_gpio_read_config(client, offset);
+ if (ret < 0)
+ return ret;
+
+ if (direction_out) {
+ out_val = requested_out ? UCD9000_GPIO_CONFIG_OUT_VALUE : 0;
+
+ if (ret & UCD9000_GPIO_CONFIG_OUT_ENABLE) {
+ if ((ret & UCD9000_GPIO_CONFIG_OUT_VALUE) == out_val)
+ return 0;
+ } else {
+ ret |= UCD9000_GPIO_CONFIG_OUT_ENABLE;
+ }
+
+ if (out_val)
+ ret |= UCD9000_GPIO_CONFIG_OUT_VALUE;
+ else
+ ret &= ~UCD9000_GPIO_CONFIG_OUT_VALUE;
+
+ } else {
+ if (!(ret & UCD9000_GPIO_CONFIG_OUT_ENABLE))
+ return 0;
+
+ ret &= ~UCD9000_GPIO_CONFIG_OUT_ENABLE;
+ }
+
+ ret |= UCD9000_GPIO_CONFIG_ENABLE;
+ config = ret;
+
+ /* Page set not required */
+ ret = i2c_smbus_write_byte_data(client, UCD9000_GPIO_CONFIG, config);
+ if (ret < 0)
+ return ret;
+
+ config &= ~UCD9000_GPIO_CONFIG_ENABLE;
+
+ return i2c_smbus_write_byte_data(client, UCD9000_GPIO_CONFIG, config);
+}
+
+static int ucd9000_gpio_direction_input(struct gpio_chip *gc,
+ unsigned int offset)
+{
+ return ucd9000_gpio_set_direction(gc, offset, UCD9000_GPIO_INPUT, 0);
+}
+
+static int ucd9000_gpio_direction_output(struct gpio_chip *gc,
+ unsigned int offset, int val)
+{
+ return ucd9000_gpio_set_direction(gc, offset, UCD9000_GPIO_OUTPUT,
+ val);
+}
+
+static void ucd9000_probe_gpio(struct i2c_client *client,
+ const struct i2c_device_id *mid,
+ struct ucd9000_data *data)
+{
+ int rc;
+
+ switch (mid->driver_data) {
+ case ucd9090:
+ data->gpio.ngpio = UCD9090_NUM_GPIOS;
+ break;
+ case ucd90120:
+ case ucd90124:
+ case ucd90160:
+ data->gpio.ngpio = UCD901XX_NUM_GPIOS;
+ break;
+ case ucd90910:
+ data->gpio.ngpio = UCD90910_NUM_GPIOS;
+ break;
+ default:
+ return; /* GPIO support is optional. */
+ }
+
+ /*
+ * Pinmux support has not been added to the new gpio_chip.
+ * This support should be added when possible given the mux
+ * behavior of these IO devices.
+ */
+ data->gpio.label = client->name;
+ data->gpio.get_direction = ucd9000_gpio_get_direction;
+ data->gpio.direction_input = ucd9000_gpio_direction_input;
+ data->gpio.direction_output = ucd9000_gpio_direction_output;
+ data->gpio.get = ucd9000_gpio_get;
+ data->gpio.set = ucd9000_gpio_set;
+ data->gpio.can_sleep = true;
+ data->gpio.base = -1;
+ data->gpio.parent = &client->dev;
+
+ rc = devm_gpiochip_add_data(&client->dev, &data->gpio, client);
+ if (rc)
+ dev_warn(&client->dev, "Could not add gpiochip: %d\n", rc);
+}
+#else
+static void ucd9000_probe_gpio(struct i2c_client *client,
+ const struct i2c_device_id *mid,
+ struct ucd9000_data *data)
+{
+}
+#endif /* CONFIG_GPIOLIB */
+
+#ifdef CONFIG_DEBUG_FS
+static int ucd9000_get_mfr_status(struct i2c_client *client, u8 *buffer)
+{
+ int ret = pmbus_set_page(client, 0);
+
+ if (ret < 0)
+ return ret;
+
+ return i2c_smbus_read_block_data(client, UCD9000_MFR_STATUS, buffer);
+}
+
+static int ucd9000_debugfs_show_mfr_status_bit(void *data, u64 *val)
+{
+ struct ucd9000_debugfs_entry *entry = data;
+ struct i2c_client *client = entry->client;
+ u8 buffer[I2C_SMBUS_BLOCK_MAX];
+ int ret;
+
+ ret = ucd9000_get_mfr_status(client, buffer);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Attribute only created for devices with gpi fault bits at bits
+ * 16-23, which is the second byte of the response.
+ */
+ *val = !!(buffer[1] & BIT(entry->index));
+
+ return 0;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(ucd9000_debugfs_mfr_status_bit,
+ ucd9000_debugfs_show_mfr_status_bit, NULL, "%1lld\n");
+
+static ssize_t ucd9000_debugfs_read_mfr_status(struct file *file,
+ char __user *buf, size_t count,
+ loff_t *ppos)
+{
+ struct i2c_client *client = file->private_data;
+ u8 buffer[I2C_SMBUS_BLOCK_MAX];
+ char str[(I2C_SMBUS_BLOCK_MAX * 2) + 2];
+ char *res;
+ int rc;
+
+ rc = ucd9000_get_mfr_status(client, buffer);
+ if (rc < 0)
+ return rc;
+
+ res = bin2hex(str, buffer, min(rc, I2C_SMBUS_BLOCK_MAX));
+ *res++ = '\n';
+ *res = 0;
+
+ return simple_read_from_buffer(buf, count, ppos, str, res - str);
+}
+
+static const struct file_operations ucd9000_debugfs_show_mfr_status_fops = {
+ .llseek = noop_llseek,
+ .read = ucd9000_debugfs_read_mfr_status,
+ .open = simple_open,
+};
+
+static int ucd9000_init_debugfs(struct i2c_client *client,
+ const struct i2c_device_id *mid,
+ struct ucd9000_data *data)
+{
+ struct dentry *debugfs;
+ struct ucd9000_debugfs_entry *entries;
+ int i;
+ char name[UCD9000_DEBUGFS_NAME_LEN];
+
+ debugfs = pmbus_get_debugfs_dir(client);
+ if (!debugfs)
+ return -ENOENT;
+
+ data->debugfs = debugfs_create_dir(client->name, debugfs);
+ if (!data->debugfs)
+ return -ENOENT;
+
+ /*
+ * Of the chips this driver supports, only the UCD9090, UCD90160,
+ * and UCD90910 report GPI faults in their MFR_STATUS register, so only
+ * create the GPI fault debugfs attributes for those chips.
+ */
+ if (mid->driver_data == ucd9090 || mid->driver_data == ucd90160 ||
+ mid->driver_data == ucd90910) {
+ entries = devm_kcalloc(&client->dev,
+ UCD9000_GPI_COUNT, sizeof(*entries),
+ GFP_KERNEL);
+ if (!entries)
+ return -ENOMEM;
+
+ for (i = 0; i < UCD9000_GPI_COUNT; i++) {
+ entries[i].client = client;
+ entries[i].index = i;
+ scnprintf(name, UCD9000_DEBUGFS_NAME_LEN,
+ "gpi%d_alarm", i + 1);
+ debugfs_create_file(name, 0444, data->debugfs,
+ &entries[i],
+ &ucd9000_debugfs_mfr_status_bit);
+ }
+ }
+
+ scnprintf(name, UCD9000_DEBUGFS_NAME_LEN, "mfr_status");
+ debugfs_create_file(name, 0444, data->debugfs, client,
+ &ucd9000_debugfs_show_mfr_status_fops);
+
+ return 0;
+}
+#else
+static int ucd9000_init_debugfs(struct i2c_client *client,
+ const struct i2c_device_id *mid,
+ struct ucd9000_data *data)
+{
+ return 0;
+}
+#endif /* CONFIG_DEBUG_FS */
+
+static int ucd9000_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1];
+ struct ucd9000_data *data;
+ struct pmbus_driver_info *info;
+ const struct i2c_device_id *mid;
+ enum chips chip;
+ int i, ret;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA |
+ I2C_FUNC_SMBUS_BLOCK_DATA))
+ return -ENODEV;
+
+ ret = i2c_smbus_read_block_data(client, UCD9000_DEVICE_ID,
+ block_buffer);
+ if (ret < 0) {
+ dev_err(&client->dev, "Failed to read device ID\n");
+ return ret;
+ }
+ block_buffer[ret] = '\0';
+ dev_info(&client->dev, "Device ID %s\n", block_buffer);
+
+ for (mid = ucd9000_id; mid->name[0]; mid++) {
+ if (!strncasecmp(mid->name, block_buffer, strlen(mid->name)))
+ break;
+ }
+ if (!mid->name[0]) {
+ dev_err(&client->dev, "Unsupported device\n");
+ return -ENODEV;
+ }
+
+ if (client->dev.of_node)
+ chip = (enum chips)of_device_get_match_data(&client->dev);
+ else
+ chip = id->driver_data;
+
+ if (chip != ucd9000 && chip != mid->driver_data)
+ dev_notice(&client->dev,
+ "Device mismatch: Configured %s, detected %s\n",
+ id->name, mid->name);
+
+ data = devm_kzalloc(&client->dev, sizeof(struct ucd9000_data),
+ GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+ info = &data->info;
+
+ ret = i2c_smbus_read_byte_data(client, UCD9000_NUM_PAGES);
+ if (ret < 0) {
+ dev_err(&client->dev,
+ "Failed to read number of active pages\n");
+ return ret;
+ }
+ info->pages = ret;
+ if (!info->pages) {
+ dev_err(&client->dev, "No pages configured\n");
+ return -ENODEV;
+ }
+
+ /* The internal temperature sensor is always active */
+ info->func[0] = PMBUS_HAVE_TEMP;
+
+ /* Everything else is configurable */
+ ret = i2c_smbus_read_block_data(client, UCD9000_MONITOR_CONFIG,
+ block_buffer);
+ if (ret <= 0) {
+ dev_err(&client->dev, "Failed to read configuration data\n");
+ return -ENODEV;
+ }
+ for (i = 0; i < ret; i++) {
+ int page = UCD9000_MON_PAGE(block_buffer[i]);
+
+ if (page >= info->pages)
+ continue;
+
+ switch (UCD9000_MON_TYPE(block_buffer[i])) {
+ case UCD9000_MON_VOLTAGE:
+ case UCD9000_MON_VOLTAGE_HW:
+ info->func[page] |= PMBUS_HAVE_VOUT
+ | PMBUS_HAVE_STATUS_VOUT;
+ break;
+ case UCD9000_MON_TEMPERATURE:
+ info->func[page] |= PMBUS_HAVE_TEMP2
+ | PMBUS_HAVE_STATUS_TEMP;
+ break;
+ case UCD9000_MON_CURRENT:
+ info->func[page] |= PMBUS_HAVE_IOUT
+ | PMBUS_HAVE_STATUS_IOUT;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /* Fan configuration */
+ if (mid->driver_data == ucd90124) {
+ for (i = 0; i < UCD9000_NUM_FAN; i++) {
+ i2c_smbus_write_byte_data(client,
+ UCD9000_FAN_CONFIG_INDEX, i);
+ ret = i2c_smbus_read_block_data(client,
+ UCD9000_FAN_CONFIG,
+ data->fan_data[i]);
+ if (ret < 0)
+ return ret;
+ }
+ i2c_smbus_write_byte_data(client, UCD9000_FAN_CONFIG_INDEX, 0);
+
+ info->read_byte_data = ucd9000_read_byte_data;
+ info->func[0] |= PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12
+ | PMBUS_HAVE_FAN34 | PMBUS_HAVE_STATUS_FAN34;
+ }
+
+ ucd9000_probe_gpio(client, mid, data);
+
+ ret = pmbus_do_probe(client, mid, info);
+ if (ret)
+ return ret;
+
+ ret = ucd9000_init_debugfs(client, mid, data);
+ if (ret)
+ dev_warn(&client->dev, "Failed to register debugfs: %d\n",
+ ret);
+
+ return 0;
+}
+
+/* This is the driver that will be inserted */
+static struct i2c_driver ucd9000_driver = {
+ .driver = {
+ .name = "ucd9000",
+ .of_match_table = of_match_ptr(ucd9000_of_match),
+ },
+ .probe = ucd9000_probe,
+ .remove = pmbus_do_remove,
+ .id_table = ucd9000_id,
+};
+
+module_i2c_driver(ucd9000_driver);
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus driver for TI UCD90xxx");
+MODULE_LICENSE("GPL");