[PATCH linux] Add BMC HWMON driver to kernel. Format patch based on Joel's comments.
OpenBMC Patches
openbmc-patches at stwcx.xyz
Fri Nov 27 17:00:27 AEDT 2015
From: adamliyi <adamliyi at msn.com>
Signed-off-by: adamliyi <adamliyi at msn.com>
---
Documentation/devicetree/bindings/hwmon/occ.txt | 14 +
drivers/hwmon/Kconfig | 10 +
drivers/hwmon/Makefile | 1 +
drivers/hwmon/occ.c | 1347 +++++++++++++++++++++++
4 files changed, 1372 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/occ.txt
create mode 100644 drivers/hwmon/occ.c
diff --git a/Documentation/devicetree/bindings/hwmon/occ.txt b/Documentation/devicetree/bindings/hwmon/occ.txt
new file mode 100644
index 0000000..0f953bc
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/occ.txt
@@ -0,0 +1,14 @@
+* BMC OCC Sensor HWMON driver.
+
+Required node properties:
+- compatible: manufacturer and chip name
+ "ibm,occ-i2c"
+
+- reg: I2C bus address of the device
+
+Example occ node:
+
+occ at 50 {
+ compatible = "ibm,occ-i2c";
+ reg = <0x50>;
+}
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index e13c902..9885fee 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1167,6 +1167,16 @@ config SENSORS_NCT7904
This driver can also be built as a module. If so, the module
will be called nct7904.
+config SENSORS_OCC
+ tristate "BMC driver for OCC sensor"
+ depends on I2C
+ help
+ If you say yes here you get support for BMC to monitor IBM
+ Power CPU sensors via the On-Chip-Controller (OCC).
+
+ This driver can aslo be built as a module. If so, the module
+ will be called occ.
+
config SENSORS_PCF8591
tristate "Philips PCF8591 ADC/DAC"
depends on I2C
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 9e0f3dd..53dc3b3 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -123,6 +123,7 @@ obj-$(CONFIG_SENSORS_NCT6775) += nct6775.o
obj-$(CONFIG_SENSORS_NCT7802) += nct7802.o
obj-$(CONFIG_SENSORS_NCT7904) += nct7904.o
obj-$(CONFIG_SENSORS_NTC_THERMISTOR) += ntc_thermistor.o
+obj-$(CONFIG_SENSORS_OCC) += occ.o
obj-$(CONFIG_SENSORS_PC87360) += pc87360.o
obj-$(CONFIG_SENSORS_PC87427) += pc87427.o
obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o
diff --git a/drivers/hwmon/occ.c b/drivers/hwmon/occ.c
new file mode 100644
index 0000000..360a77c
--- /dev/null
+++ b/drivers/hwmon/occ.c
@@ -0,0 +1,1347 @@
+/*
+ * BMC OCC HWMON driver - read IBM Power8 OCC (On Chip Controller)
+ * sensor data via i2c.
+ *
+ * Copyright (c) 2015 IBM (Alvin Wang, Li Yi)
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/delay.h>
+
+
+/* OCC sensor data format */
+struct occ_sensor {
+ uint16_t sensor_id;
+ uint16_t value;
+};
+
+struct powr_sensor {
+ uint16_t sensor_id;
+ uint32_t update_tag;
+ uint32_t accumulator;
+ uint16_t value;
+};
+
+struct caps_sensor {
+ uint16_t curr_powercap;
+ uint16_t curr_powerreading;
+ uint16_t norm_powercap;
+ uint16_t max_powercap;
+ uint16_t min_powercap;
+ uint16_t user_powerlimit;
+};
+
+struct sensor_data_block {
+ char sensor_type[5];
+ uint8_t reserved0;
+ uint8_t sensor_format;
+ uint8_t sensor_length;
+ uint8_t num_of_sensors;
+ struct occ_sensor *sensor;
+ struct powr_sensor *powr;
+ struct caps_sensor *caps;
+};
+
+struct occ_poll_data {
+ uint8_t status;
+ uint8_t ext_status;
+ uint8_t occs_present;
+ uint8_t config;
+ uint8_t occ_state;
+ uint8_t reserved0;
+ uint8_t reserved1;
+ uint8_t error_log_id;
+ uint32_t error_log_addr_start;
+ uint16_t error_log_length;
+ uint8_t reserved2;
+ uint8_t reserved3;
+ char occ_version_string[17];
+ char sensor_eye_catcher[7];
+ uint8_t num_of_sensor_blocks;
+ uint8_t sensor_data_version;
+ struct sensor_data_block *blocks;
+};
+
+struct occ_response {
+ uint8_t sequence_num;
+ uint8_t cmd_type;
+ uint8_t rtn_status;
+ uint16_t data_length;
+ struct occ_poll_data data;
+ uint16_t chk_sum;
+ int temp_block_id;
+ int freq_block_id;
+ int power_block_id;
+ int caps_block_id;
+};
+
+/* data private to each client */
+struct occ_drv_data {
+ struct i2c_client *client;
+ struct device *hwmon_dev;
+ struct mutex update_lock;
+ bool valid;
+ unsigned long last_updated;
+ /* Minimum timer interval for sampling In jiffies */
+ unsigned long sample_time;
+ struct occ_response occ_resp;
+};
+
+/* i2c read and write occ sensors */
+
+#define OCC_DATA_MAX 4096 /* 4KB at most */
+#define I2C_STATUS_REG 0x000d0001
+#define I2C_ERROR_REG 0x000d0002
+#define I2C_READ_ERROR 1
+#define I2C_WRITE_ERROR 2
+#define I2C_DATABUFFER_SIZE_ERROR 3
+
+/* To generate attn to OCC */
+#define ATTN_DATA 0x0006B035
+
+/* For BMC to read/write SRAM */
+#define OCB_ADDRESS 0x0006B070
+#define OCB_DATA 0x0006B075
+#define OCB_STATUS_CONTROL_AND 0x0006B072
+#define OCB_STATUS_CONTROL_OR 0x0006B073
+
+#define OCC_COMMAND_ADDR 0xFFFF6000
+#define OCC_RESPONSE_ADDR 0xFFFF7000
+
+static void deinit_occ_resp_buf(struct occ_response *p)
+{
+ int b;
+
+ if (!p)
+ return;
+
+ if (!p->data.blocks)
+ return;
+
+ for (b = 0; b < p->data.num_of_sensor_blocks; b++) {
+ if (!p->data.blocks[b].sensor)
+ kfree(p->data.blocks[b].sensor);
+ if (!p->data.blocks[b].powr)
+ kfree(p->data.blocks[b].powr);
+ if (!p->data.blocks[b].caps)
+ kfree(p->data.blocks[b].caps);
+ }
+
+ kfree(p->data.blocks);
+
+ memset(p, 0, sizeof(*p));
+}
+
+static ssize_t occ_i2c_read(struct i2c_client *client, char *buf, size_t count)
+{
+ int ret = 0;
+
+ if (count > OCC_DATA_MAX)
+ count = OCC_DATA_MAX;
+
+ dev_dbg(&client->dev, "i2c_read: reading %zu bytes @0x%x.\n",
+ count, client->addr);
+ return i2c_master_recv(client, buf, count);
+}
+
+static ssize_t occ_i2c_write(struct i2c_client *client, const char *buf,
+ size_t count)
+{
+ int ret = 0;
+
+ if (count > OCC_DATA_MAX)
+ count = OCC_DATA_MAX;
+
+ dev_dbg(&client->dev, "i2c_write: writing %zu bytes @0x%x.\n",
+ count, client->addr);
+ return i2c_master_send(client, buf, count);
+}
+
+/* read two 4-byte value */
+static int occ_getscom(struct i2c_client *client, uint32_t address,
+ uint32_t *value0, uint32_t *value1)
+{
+ uint32_t ret = 0;
+ char buf[8];
+
+ /* P8 i2c slave requires address to be shifted by 1 */
+ address = address << 1;
+
+ ret = occ_i2c_write(client, (const char *)&address,
+ sizeof(address));
+ /* FIXME: ast i2c driver does not read corret value
+ * if (ret != sizeof(address))
+ * return -I2C_WRITE_ERROR;
+ */
+ ret = occ_i2c_read(client, buf, sizeof(buf));
+ /* FIXME: ast i2c driver does not read corret value
+ * if (ret != sizeof(buf))
+ * return -I2C_READ_ERROR;
+ */
+ memcpy(value1, &buf[0], sizeof(*value1));
+ memcpy(value0, &buf[4], sizeof(*value0));
+
+ return 0;
+}
+
+/* read 8-byte value and put into data[offset] */
+static int occ_getscomb(struct i2c_client *client, uint32_t address,
+ u8 *data, int offset)
+{
+ uint32_t ret = 0;
+ char buf[8];
+ int i = 0;
+
+ /* P8 i2c slave requires address to be shifted by 1 */
+ address = address << 1;
+
+ ret = occ_i2c_write(client, (const char *)&address,
+ sizeof(address));
+ /* FIXME: ast i2c driver does not read corret value
+ * if (ret != sizeof(address))
+ * return -I2C_WRITE_ERROR;
+ */
+ ret = occ_i2c_read(client, buf, sizeof(buf));
+ /* FIXME: ast i2c driver does not read corret value
+ * if (ret != sizeof(buf))
+ * return -I2C_READ_ERROR;
+ */
+ for (i = 0; i < 8; i++)
+ data[offset + i] = buf[7 - i];
+
+ return 0;
+}
+
+static int occ_putscom(struct i2c_client *client, uint32_t address,
+ uint32_t data0, uint32_t data1)
+{
+ char buf[12];
+ uint32_t ret = 0;
+
+ /* P8 i2c slave requires address to be shifted by 1 */
+ address = address << 1;
+
+ memcpy(&buf[0], &address, sizeof(address));
+ memcpy(&buf[4], &data1, sizeof(data1));
+ memcpy(&buf[8], &data0, sizeof(data0));
+
+ ret = occ_i2c_write(client, buf, sizeof(buf));
+ /* FIXME: ast i2c driver does not read corret value
+ * if (ret != sizeof(buf))
+ * return I2C_WRITE_ERROR;
+ */
+ return 0;
+}
+
+static inline uint16_t get_occdata_length(u8 *d)
+{
+ uint16_t data_length = 0;
+
+ data_length = d[3] << 8;
+ data_length = data_length | d[4];
+ return data_length;
+}
+
+
+static int parse_occ_response(struct i2c_client *client,
+ char *d, struct occ_response *o)
+{
+ int b = 0;
+ int s = 0;
+ int ret = 0;
+ int dnum = 45;
+ struct occ_sensor *f_sensor;
+ struct occ_sensor *t_sensor;
+ struct powr_sensor *p_sensor;
+ struct caps_sensor *c_sensor;
+
+ o->sequence_num = d[0];
+ o->cmd_type = d[1];
+ o->rtn_status = d[2];
+ o->data_length = d[3] << 8;
+ o->data_length = o->data_length | d[4];
+ o->data.status = d[5];
+ o->data.ext_status = d[6];
+ o->data.occs_present = d[7];
+ o->data.config = d[8];
+ o->data.occ_state = d[9];
+ o->data.reserved0 = d[10];
+ o->data.reserved1 = d[11];
+ o->data.error_log_id = d[12];
+ o->data.error_log_addr_start = d[13] << 24;
+ o->data.error_log_addr_start =
+ o->data.error_log_addr_start | d[14] << 16;
+ o->data.error_log_addr_start =
+ o->data.error_log_addr_start | d[15] << 8;
+ o->data.error_log_addr_start =
+ o->data.error_log_addr_start | d[16];
+ o->data.error_log_length = d[17] << 8;
+ o->data.error_log_length = o->data.error_log_length | d[18];
+ o->data.reserved2 = d[19];
+ o->data.reserved3 = d[20];
+ strncpy(o->data.occ_version_string, &d[21], 16);
+ strncpy(&o->data.sensor_eye_catcher[0], &d[37], 6);
+ o->data.sensor_eye_catcher[6] = '\0';
+ o->data.num_of_sensor_blocks = d[43];
+ o->data.sensor_data_version = d[44];
+
+ if (strcmp(o->data.sensor_eye_catcher, "SENSOR") != 0) {
+ dev_err(&client->dev,
+ "ERROR: SENSOR not found at byte 37 (%s)\n",
+ o->data.sensor_eye_catcher);
+ return -1;
+ }
+
+ if (o->data.num_of_sensor_blocks == 0) {
+ dev_err(&client->dev, "ERROR: SENSOR block num is 0\n");
+ return -1;
+ }
+
+ o->data.blocks = kzalloc(sizeof(struct sensor_data_block) *
+ o->data.num_of_sensor_blocks, GFP_KERNEL);
+ if (!o->data.blocks)
+ return -ENOMEM;
+
+ dev_dbg(&client->dev, "Reading %d sensor blocks\n",
+ o->data.num_of_sensor_blocks);
+ o->temp_block_id = -1;
+ o->freq_block_id = -1;
+ o->power_block_id = -1;
+ o->caps_block_id = -1;
+ for (b = 0; b < o->data.num_of_sensor_blocks; b++) {
+ /* 8-byte sensor block head */
+ strncpy(&o->data.blocks[b].sensor_type[0],
+ (const char *)&d[dnum], 4);
+ o->data.blocks[b].reserved0 = d[dnum+4];
+ o->data.blocks[b].sensor_format = d[dnum+5];
+ o->data.blocks[b].sensor_length = d[dnum+6];
+ o->data.blocks[b].num_of_sensors = d[dnum+7];
+ dnum = dnum + 8;
+
+ dev_dbg(&client->dev,
+ "sensor block[%d]: type: %s, num_of_sensors: %d\n",
+ b, o->data.blocks[b].sensor_type,
+ o->data.blocks[b].num_of_sensors);
+
+ /* empty sensor block */
+ if (o->data.blocks[b].num_of_sensors <= 0)
+ continue;
+ if (o->data.blocks[b].sensor_length == 0)
+ continue;
+
+ if (strcmp(o->data.blocks[b].sensor_type, "FREQ") == 0) {
+ o->data.blocks[b].sensor =
+ kzalloc(sizeof(struct occ_sensor) *
+ o->data.blocks[b].num_of_sensors,
+ GFP_KERNEL);
+
+ if (!o->data.blocks[b].sensor) {
+ ret = -ENOMEM;
+ goto abort;
+ }
+ o->freq_block_id = b;
+ for (s = 0; s < o->data.blocks[b].num_of_sensors; s++) {
+ f_sensor = &o->data.blocks[b].sensor[s];
+ f_sensor->sensor_id = (d[dnum]<<8) | d[dnum+1];
+ f_sensor->value = (d[dnum+2]<<8) | d[dnum+3];
+ dev_dbg(&client->dev,
+ "sensor[%d]-[%d]: id: %u, value: %u\n",
+ b, s, f_sensor->sensor_id,
+ f_sensor->value);
+ dnum = dnum + o->data.blocks[b].sensor_length;
+ }
+ } else if (strcmp(o->data.blocks[b].sensor_type, "TEMP") == 0) {
+
+ o->data.blocks[b].sensor =
+ kzalloc(sizeof(struct occ_sensor) *
+ o->data.blocks[b].num_of_sensors,
+ GFP_KERNEL);
+
+ if (!o->data.blocks[b].sensor) {
+ ret = -ENOMEM;
+ goto abort;
+ }
+
+ o->temp_block_id = b;
+ for (s = 0; s < o->data.blocks[b].num_of_sensors; s++) {
+ t_sensor = &o->data.blocks[b].sensor[s];
+ t_sensor->sensor_id = (d[dnum]<<8) | d[dnum+1];
+ t_sensor->value = (d[dnum+2] << 8) | d[dnum+3];
+ dev_dbg(&client->dev,
+ "sensor[%d]-[%d]: id: %u, value: %u\n",
+ b, s, t_sensor->sensor_id,
+ t_sensor->value);
+ dnum = dnum + o->data.blocks[b].sensor_length;
+ }
+ } else if (strcmp(o->data.blocks[b].sensor_type, "POWR") == 0) {
+
+ o->data.blocks[b].powr =
+ kzalloc(sizeof(struct powr_sensor) *
+ o->data.blocks[b].num_of_sensors,
+ GFP_KERNEL);
+
+ if (!o->data.blocks[b].powr) {
+ ret = -ENOMEM;
+ goto abort;
+ }
+ o->power_block_id = b;
+ for (s = 0; s < o->data.blocks[b].num_of_sensors; s++) {
+ p_sensor = &o->data.blocks[b].powr[s];
+ p_sensor->sensor_id = (d[dnum]<<8) | d[dnum+1];
+ p_sensor->update_tag =
+ (d[dnum+2] << 24) | (d[dnum+3] << 16) |
+ (d[dnum+4] << 8) | d[dnum+5];
+ p_sensor->accumulator =
+ (d[dnum+6] << 24) | (d[dnum+7] << 16) |
+ (d[dnum+8] << 8) | d[dnum+9];
+ p_sensor->value =
+ (d[dnum+10] << 8) | d[dnum+11];
+
+ dev_dbg(&client->dev,
+ "sensor[%d]-[%d]: id: %u, value: %u\n",
+ b, s, p_sensor->sensor_id,
+ p_sensor->value);
+
+ dnum = dnum + o->data.blocks[b].sensor_length;
+ }
+ } else if (strcmp(o->data.blocks[b].sensor_type, "CAPS") == 0) {
+
+ o->data.blocks[b].caps =
+ kzalloc(sizeof(struct caps_sensor) *
+ o->data.blocks[b].num_of_sensors,
+ GFP_KERNEL);
+
+ if (!o->data.blocks[b].caps) {
+ ret = -ENOMEM;
+ goto abort;
+ }
+ o->caps_block_id = b;
+ for (s = 0; s < o->data.blocks[b].num_of_sensors; s++) {
+ c_sensor = &o->data.blocks[b].caps[s];
+ c_sensor->curr_powercap =
+ (d[dnum] << 8) | d[dnum+1];
+ c_sensor->curr_powerreading =
+ (d[dnum+2] << 8) | d[dnum+3];
+ c_sensor->norm_powercap =
+ (d[dnum+4] << 8) | d[dnum+5];
+ c_sensor->max_powercap =
+ (d[dnum+6] << 8) | d[dnum+7];
+ c_sensor->min_powercap =
+ (d[dnum+8] << 8) | d[dnum+9];
+ c_sensor->user_powerlimit =
+ (d[dnum+10] << 8) | d[dnum+11];
+
+ dnum = dnum + o->data.blocks[b].sensor_length;
+ dev_dbg(&client->dev, "CAPS sensor #%d:\n", s);
+ dev_dbg(&client->dev, "curr_powercap is %x\n",
+ c_sensor->curr_powercap);
+ dev_dbg(&client->dev,
+ "curr_powerreading is %x\n",
+ c_sensor->curr_powerreading);
+ dev_dbg(&client->dev, "norm_powercap is %x\n",
+ c_sensor->norm_powercap);
+ dev_dbg(&client->dev, "max_powercap is %x\n",
+ c_sensor->max_powercap);
+ dev_dbg(&client->dev, "min_powercap is %x\n",
+ c_sensor->min_powercap);
+ dev_dbg(&client->dev, "user_powerlimit is %x\n",
+ c_sensor->user_powerlimit);
+ }
+
+ } else {
+ dev_err(&client->dev,
+ "ERROR: sensor type %s not supported\n",
+ o->data.blocks[b].sensor_type);
+ ret = -1;
+ goto abort;
+ }
+ }
+
+ return 0;
+abort:
+ deinit_occ_resp_buf(o);
+ return ret;
+}
+
+static int occ_get_all(struct i2c_client *client, struct occ_response *occ_resp)
+{
+ char occ_data[OCC_DATA_MAX];
+ uint16_t num_bytes = 0;
+ int b = 0;
+ int ret = 0;
+
+ /* Init OCB */
+ occ_putscom(client, OCB_STATUS_CONTROL_OR, 0x08000000, 0x00000000);
+ occ_putscom(client, OCB_STATUS_CONTROL_AND, 0xFBFFFFFF, 0xFFFFFFFF);
+
+ /* Send poll command to OCC */
+ occ_putscom(client, OCB_ADDRESS, OCC_COMMAND_ADDR, 0x00000000);
+ occ_putscom(client, OCB_ADDRESS, OCC_COMMAND_ADDR, 0x00000000);
+ occ_putscom(client, OCB_DATA, 0x00000001, 0x10001100);
+
+ /* Trigger ATTN */
+ occ_putscom(client, ATTN_DATA, 0x01010000, 0x00000000);
+
+ /* Get response data */
+ occ_putscom(client, OCB_ADDRESS, OCC_RESPONSE_ADDR, 0x00000000);
+ occ_getscomb(client, OCB_DATA, occ_data, 0);
+
+ num_bytes = get_occdata_length(occ_data);
+
+ dev_dbg(&client->dev, "OCC data length: %d\n", num_bytes);
+
+ if (num_bytes > OCC_DATA_MAX) {
+ dev_err(&client->dev, "ERROR: OCC data length must be < 4KB\n");
+ return -1;
+ }
+
+ if (num_bytes <= 0) {
+ dev_err(&client->dev, "ERROR: OCC data length is zero\n");
+ return -1;
+ }
+
+ for (b = 8; b < num_bytes + 8; b = b + 8)
+ occ_getscomb(client, OCB_DATA, occ_data, b);
+
+ ret = parse_occ_response(client, occ_data, occ_resp);
+
+ return ret;
+}
+
+
+static int occ_update_device(struct device *dev)
+{
+ struct occ_drv_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int ret = 0;
+
+ mutex_lock(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + data->sample_time)
+ || !data->valid) {
+ deinit_occ_resp_buf(&data->occ_resp);
+
+ ret = occ_get_all(client, &data->occ_resp);
+
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+ mutex_unlock(&data->update_lock);
+
+ return ret;
+}
+
+/* sysfs attributes for hwmon */
+
+static ssize_t show_occ_temp_input(struct device *hwmon_dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ int n = attr->index;
+ struct device *dev = hwmon_dev->parent;
+ struct occ_drv_data *data = dev_get_drvdata(dev);
+ int ret = 0;
+ struct occ_sensor *sensor;
+ int val = 0;
+
+ ret = occ_update_device(dev);
+
+ if (ret != 0) {
+ dev_err(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
+ return ret;
+ }
+
+ if (!data->occ_resp.data.blocks)
+ return -1;
+
+ sensor =
+ data->occ_resp.data.blocks[data->occ_resp.temp_block_id].sensor;
+
+ if (!sensor)
+ return -1;
+
+ /* in millidegree Celsius */
+ val = sensor[n - 1].value * 1000;
+
+ return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t show_occ_temp_label(struct device *hwmon_dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ int n = attr->index;
+ struct device *dev = hwmon_dev->parent;
+ struct occ_drv_data *data = dev_get_drvdata(dev);
+ int ret = 0;
+ struct occ_sensor *sensor;
+ int val = 0;
+
+ ret = occ_update_device(dev);
+
+ if (ret != 0) {
+ dev_err(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
+ return ret;
+ }
+
+ if (!data->occ_resp.data.blocks)
+ return -1;
+
+ sensor =
+ data->occ_resp.data.blocks[data->occ_resp.temp_block_id].sensor;
+
+ if (!sensor)
+ return -1;
+
+ dev_dbg(dev, "temp_block_id: %d, sensor: %d\n",
+ data->occ_resp.temp_block_id, n - 1);
+ val = sensor[n - 1].sensor_id;
+ dev_dbg(dev, "temp%d sensor id: %d\n", n, val);
+
+ return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t show_occ_power_label(struct device *hwmon_dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ int n = attr->index;
+ struct device *dev = hwmon_dev->parent;
+ struct occ_drv_data *data = dev_get_drvdata(dev);
+ int ret = 0;
+ struct powr_sensor *sensor;
+ int val = 0;
+
+ ret = occ_update_device(dev);
+
+ if (ret != 0) {
+ dev_err(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
+ return ret;
+ }
+
+ dev_dbg(dev, "power_block_id: %d, sensor: %d\n",
+ data->occ_resp.power_block_id, n - 1);
+
+ if (!data->occ_resp.data.blocks)
+ return -1;
+
+ sensor =
+ data->occ_resp.data.blocks[data->occ_resp.power_block_id].powr;
+ if (!sensor)
+ return -1;
+
+ val = sensor[n - 1].sensor_id;
+ dev_dbg(dev, "power%d sensor id: %d\n", n, val);
+
+ return sprintf(buf, "%d\n", val);
+}
+
+
+static ssize_t show_occ_power_input(struct device *hwmon_dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ int n = attr->index;
+ struct device *dev = hwmon_dev->parent;
+ struct occ_drv_data *data = dev_get_drvdata(dev);
+ int ret = 0;
+ struct powr_sensor *sensor;
+ int val = 0;
+
+ ret = occ_update_device(dev);
+
+ if (ret != 0) {
+ dev_err(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
+ return ret;
+ }
+
+ dev_dbg(dev, "power block_id: %d, sensor: %d\n",
+ data->occ_resp.power_block_id, n - 1);
+
+ if (!data->occ_resp.data.blocks)
+ return -1;
+
+ sensor =
+ data->occ_resp.data.blocks[data->occ_resp.power_block_id].powr;
+ if (!sensor)
+ return -1;
+
+ val = sensor[n - 1].value;
+ dev_dbg(dev, "power%d sensor value: %d\n", n, val);
+
+ return sprintf(buf, "%d\n", val);
+}
+
+
+static ssize_t show_occ_freq_label(struct device *hwmon_dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ int n = attr->index;
+ struct device *dev = hwmon_dev->parent;
+ struct occ_drv_data *data = dev_get_drvdata(dev);
+ int ret = 0;
+ struct occ_sensor *sensor;
+ int val = 0;
+
+ ret = occ_update_device(dev);
+
+ if (ret != 0) {
+ dev_err(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
+ return ret;
+ }
+
+ if (!data->occ_resp.data.blocks)
+ return -1;
+
+ sensor =
+ data->occ_resp.data.blocks[data->occ_resp.freq_block_id].sensor;
+ if (!sensor)
+ return -1;
+
+ dev_dbg(dev, "freq_block_id: %d, sensor: %d\n",
+ data->occ_resp.freq_block_id, n - 1);
+ val = sensor[n - 1].sensor_id;
+ dev_dbg(dev, "freq%d sensor id: %d\n", n, val);
+
+ return sprintf(buf, "%d\n", val);
+}
+
+
+static ssize_t show_occ_freq_input(struct device *hwmon_dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ int n = attr->index;
+ struct device *dev = hwmon_dev->parent;
+ struct occ_drv_data *data = dev_get_drvdata(dev);
+ int ret = 0;
+ struct occ_sensor *sensor;
+ int val = 0;
+
+ ret = occ_update_device(dev);
+
+ if (ret != 0) {
+ dev_err(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
+ return ret;
+ }
+
+ if (!data->occ_resp.data.blocks)
+ return -1;
+
+ sensor =
+ data->occ_resp.data.blocks[data->occ_resp.freq_block_id].sensor;
+ if (!sensor)
+ return -1;
+
+ dev_dbg(dev, "block_id: %d, sensor: %d\n",
+ data->occ_resp.freq_block_id, n - 1);
+ val = sensor[n - 1].value;
+ dev_dbg(dev, "freq%d sensor value: %d\n", n, val);
+
+ return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t show_occ_caps(struct device *hwmon_dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(da);
+ int nr = attr->nr;
+ int n = attr->index;
+ struct device *dev = hwmon_dev->parent;
+ struct occ_drv_data *data = dev_get_drvdata(dev);
+ int ret = 0;
+ struct caps_sensor *sensor;
+ int val = 0;
+
+ ret = occ_update_device(dev);
+ if (ret != 0) {
+ dev_err(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
+ return ret;
+ }
+
+ dev_dbg(dev, "block_id: %d, sensor: %d, nr: %d\n",
+ data->occ_resp.caps_block_id, n - 1, nr);
+ if (!data->occ_resp.data.blocks)
+ return -1;
+
+ sensor = data->occ_resp.data.blocks[data->occ_resp.caps_block_id].caps;
+ if (!sensor)
+ return -1;
+
+ switch (nr) {
+ case 0:
+ val = sensor[n - 1].curr_powercap;
+ break;
+ case 1:
+ val = sensor[n - 1].curr_powerreading;
+ break;
+ case 2:
+ val = sensor[n - 1].norm_powercap;
+ break;
+ case 3:
+ val = sensor[n - 1].max_powercap;
+ break;
+ case 4:
+ val = sensor[n - 1].min_powercap;
+ break;
+ case 5:
+ val = sensor[n - 1].user_powerlimit;
+ break;
+ default:
+ val = 0;
+ }
+
+ dev_dbg(dev, "caps%d sensor value: %d, nr: %d\n", n, val, nr);
+
+ return sprintf(buf, "%d\n", val);
+}
+
+static struct sensor_device_attribute temp_input[] = {
+ SENSOR_ATTR(temp1_input, S_IRUGO, show_occ_temp_input, NULL, 1),
+ SENSOR_ATTR(temp2_input, S_IRUGO, show_occ_temp_input, NULL, 2),
+ SENSOR_ATTR(temp3_input, S_IRUGO, show_occ_temp_input, NULL, 3),
+ SENSOR_ATTR(temp4_input, S_IRUGO, show_occ_temp_input, NULL, 4),
+ SENSOR_ATTR(temp5_input, S_IRUGO, show_occ_temp_input, NULL, 5),
+ SENSOR_ATTR(temp6_input, S_IRUGO, show_occ_temp_input, NULL, 6),
+ SENSOR_ATTR(temp7_input, S_IRUGO, show_occ_temp_input, NULL, 7),
+ SENSOR_ATTR(temp8_input, S_IRUGO, show_occ_temp_input, NULL, 8),
+ SENSOR_ATTR(temp9_input, S_IRUGO, show_occ_temp_input, NULL, 9),
+ SENSOR_ATTR(temp10_input, S_IRUGO, show_occ_temp_input, NULL, 10),
+ SENSOR_ATTR(temp11_input, S_IRUGO, show_occ_temp_input, NULL, 11),
+ SENSOR_ATTR(temp12_input, S_IRUGO, show_occ_temp_input, NULL, 12),
+ SENSOR_ATTR(temp13_input, S_IRUGO, show_occ_temp_input, NULL, 13),
+ SENSOR_ATTR(temp14_input, S_IRUGO, show_occ_temp_input, NULL, 14),
+ SENSOR_ATTR(temp15_input, S_IRUGO, show_occ_temp_input, NULL, 15),
+ SENSOR_ATTR(temp16_input, S_IRUGO, show_occ_temp_input, NULL, 16),
+ SENSOR_ATTR(temp17_input, S_IRUGO, show_occ_temp_input, NULL, 17),
+ SENSOR_ATTR(temp18_input, S_IRUGO, show_occ_temp_input, NULL, 18),
+ SENSOR_ATTR(temp19_input, S_IRUGO, show_occ_temp_input, NULL, 19),
+ SENSOR_ATTR(temp20_input, S_IRUGO, show_occ_temp_input, NULL, 20),
+ SENSOR_ATTR(temp21_input, S_IRUGO, show_occ_temp_input, NULL, 21),
+ SENSOR_ATTR(temp22_input, S_IRUGO, show_occ_temp_input, NULL, 22),
+};
+
+static struct sensor_device_attribute temp_label[] = {
+ SENSOR_ATTR(temp1_label, S_IRUGO, show_occ_temp_label, NULL, 1),
+ SENSOR_ATTR(temp2_label, S_IRUGO, show_occ_temp_label, NULL, 2),
+ SENSOR_ATTR(temp3_label, S_IRUGO, show_occ_temp_label, NULL, 3),
+ SENSOR_ATTR(temp4_label, S_IRUGO, show_occ_temp_label, NULL, 4),
+ SENSOR_ATTR(temp5_label, S_IRUGO, show_occ_temp_label, NULL, 5),
+ SENSOR_ATTR(temp6_label, S_IRUGO, show_occ_temp_label, NULL, 6),
+ SENSOR_ATTR(temp7_label, S_IRUGO, show_occ_temp_label, NULL, 7),
+ SENSOR_ATTR(temp8_label, S_IRUGO, show_occ_temp_label, NULL, 8),
+ SENSOR_ATTR(temp9_label, S_IRUGO, show_occ_temp_label, NULL, 9),
+ SENSOR_ATTR(temp10_label, S_IRUGO, show_occ_temp_label, NULL, 10),
+ SENSOR_ATTR(temp11_label, S_IRUGO, show_occ_temp_label, NULL, 11),
+ SENSOR_ATTR(temp12_label, S_IRUGO, show_occ_temp_label, NULL, 12),
+ SENSOR_ATTR(temp13_label, S_IRUGO, show_occ_temp_label, NULL, 13),
+ SENSOR_ATTR(temp14_label, S_IRUGO, show_occ_temp_label, NULL, 14),
+ SENSOR_ATTR(temp15_label, S_IRUGO, show_occ_temp_label, NULL, 15),
+ SENSOR_ATTR(temp16_label, S_IRUGO, show_occ_temp_label, NULL, 16),
+ SENSOR_ATTR(temp17_label, S_IRUGO, show_occ_temp_label, NULL, 17),
+ SENSOR_ATTR(temp18_label, S_IRUGO, show_occ_temp_label, NULL, 18),
+ SENSOR_ATTR(temp19_label, S_IRUGO, show_occ_temp_label, NULL, 19),
+ SENSOR_ATTR(temp20_label, S_IRUGO, show_occ_temp_label, NULL, 20),
+ SENSOR_ATTR(temp21_label, S_IRUGO, show_occ_temp_label, NULL, 21),
+ SENSOR_ATTR(temp22_label, S_IRUGO, show_occ_temp_label, NULL, 22),
+
+};
+
+#define TEMP_UNIT_ATTRS(X) \
+{ &temp_input[X].dev_attr.attr, \
+ &temp_label[X].dev_attr.attr, \
+ NULL \
+}
+
+/* 10-core CPU, occ has 22 temp sensors, more socket, more sensors */
+static struct attribute *occ_temp_attr[][3] = {
+ TEMP_UNIT_ATTRS(0),
+ TEMP_UNIT_ATTRS(1),
+ TEMP_UNIT_ATTRS(2),
+ TEMP_UNIT_ATTRS(3),
+ TEMP_UNIT_ATTRS(4),
+ TEMP_UNIT_ATTRS(5),
+ TEMP_UNIT_ATTRS(6),
+ TEMP_UNIT_ATTRS(7),
+ TEMP_UNIT_ATTRS(8),
+ TEMP_UNIT_ATTRS(9),
+ TEMP_UNIT_ATTRS(10),
+ TEMP_UNIT_ATTRS(11),
+ TEMP_UNIT_ATTRS(12),
+ TEMP_UNIT_ATTRS(13),
+ TEMP_UNIT_ATTRS(14),
+ TEMP_UNIT_ATTRS(15),
+ TEMP_UNIT_ATTRS(16),
+ TEMP_UNIT_ATTRS(17),
+ TEMP_UNIT_ATTRS(18),
+ TEMP_UNIT_ATTRS(19),
+ TEMP_UNIT_ATTRS(20),
+ TEMP_UNIT_ATTRS(21),
+};
+
+static const struct attribute_group occ_temp_attr_group[] = {
+ { .attrs = occ_temp_attr[0] },
+ { .attrs = occ_temp_attr[1] },
+ { .attrs = occ_temp_attr[2] },
+ { .attrs = occ_temp_attr[3] },
+ { .attrs = occ_temp_attr[4] },
+ { .attrs = occ_temp_attr[5] },
+ { .attrs = occ_temp_attr[6] },
+ { .attrs = occ_temp_attr[7] },
+ { .attrs = occ_temp_attr[8] },
+ { .attrs = occ_temp_attr[9] },
+ { .attrs = occ_temp_attr[10] },
+ { .attrs = occ_temp_attr[11] },
+ { .attrs = occ_temp_attr[12] },
+ { .attrs = occ_temp_attr[13] },
+ { .attrs = occ_temp_attr[14] },
+ { .attrs = occ_temp_attr[15] },
+ { .attrs = occ_temp_attr[16] },
+ { .attrs = occ_temp_attr[17] },
+ { .attrs = occ_temp_attr[18] },
+ { .attrs = occ_temp_attr[19] },
+ { .attrs = occ_temp_attr[20] },
+ { .attrs = occ_temp_attr[21] },
+};
+
+
+static struct sensor_device_attribute freq_input[] = {
+ SENSOR_ATTR(freq1_input, S_IRUGO, show_occ_freq_input, NULL, 1),
+ SENSOR_ATTR(freq2_input, S_IRUGO, show_occ_freq_input, NULL, 2),
+ SENSOR_ATTR(freq3_input, S_IRUGO, show_occ_freq_input, NULL, 3),
+ SENSOR_ATTR(freq4_input, S_IRUGO, show_occ_freq_input, NULL, 4),
+ SENSOR_ATTR(freq5_input, S_IRUGO, show_occ_freq_input, NULL, 5),
+ SENSOR_ATTR(freq6_input, S_IRUGO, show_occ_freq_input, NULL, 6),
+ SENSOR_ATTR(freq7_input, S_IRUGO, show_occ_freq_input, NULL, 7),
+ SENSOR_ATTR(freq8_input, S_IRUGO, show_occ_freq_input, NULL, 8),
+ SENSOR_ATTR(freq9_input, S_IRUGO, show_occ_freq_input, NULL, 9),
+ SENSOR_ATTR(freq10_input, S_IRUGO, show_occ_freq_input, NULL, 10),
+};
+
+static struct sensor_device_attribute freq_label[] = {
+ SENSOR_ATTR(freq1_label, S_IRUGO, show_occ_freq_label, NULL, 1),
+ SENSOR_ATTR(freq2_label, S_IRUGO, show_occ_freq_label, NULL, 2),
+ SENSOR_ATTR(freq3_label, S_IRUGO, show_occ_freq_label, NULL, 3),
+ SENSOR_ATTR(freq4_label, S_IRUGO, show_occ_freq_label, NULL, 4),
+ SENSOR_ATTR(freq5_label, S_IRUGO, show_occ_freq_label, NULL, 5),
+ SENSOR_ATTR(freq6_label, S_IRUGO, show_occ_freq_label, NULL, 6),
+ SENSOR_ATTR(freq7_label, S_IRUGO, show_occ_freq_label, NULL, 7),
+ SENSOR_ATTR(freq8_label, S_IRUGO, show_occ_freq_label, NULL, 8),
+ SENSOR_ATTR(freq9_label, S_IRUGO, show_occ_freq_label, NULL, 9),
+ SENSOR_ATTR(freq10_label, S_IRUGO, show_occ_freq_label, NULL, 10),
+
+};
+
+#define FREQ_UNIT_ATTRS(X) \
+{ &freq_input[X].dev_attr.attr, \
+ &freq_label[X].dev_attr.attr, \
+ NULL \
+}
+
+/* 10-core CPU, occ has 22 freq sensors, more socket, more sensors */
+static struct attribute *occ_freq_attr[][3] = {
+ FREQ_UNIT_ATTRS(0),
+ FREQ_UNIT_ATTRS(1),
+ FREQ_UNIT_ATTRS(2),
+ FREQ_UNIT_ATTRS(3),
+ FREQ_UNIT_ATTRS(4),
+ FREQ_UNIT_ATTRS(5),
+ FREQ_UNIT_ATTRS(6),
+ FREQ_UNIT_ATTRS(7),
+ FREQ_UNIT_ATTRS(8),
+ FREQ_UNIT_ATTRS(9),
+};
+
+static const struct attribute_group occ_freq_attr_group[] = {
+ { .attrs = occ_freq_attr[0] },
+ { .attrs = occ_freq_attr[1] },
+ { .attrs = occ_freq_attr[2] },
+ { .attrs = occ_freq_attr[3] },
+ { .attrs = occ_freq_attr[4] },
+ { .attrs = occ_freq_attr[5] },
+ { .attrs = occ_freq_attr[6] },
+ { .attrs = occ_freq_attr[7] },
+ { .attrs = occ_freq_attr[8] },
+ { .attrs = occ_freq_attr[9] },
+};
+
+static struct sensor_device_attribute_2 caps_curr_powercap[] = {
+ SENSOR_ATTR_2(caps_curr_powercap, S_IRUGO, show_occ_caps, NULL, 0, 1),
+};
+static struct sensor_device_attribute_2 caps_curr_powerreading[] = {
+ SENSOR_ATTR_2(caps_curr_powerreading, S_IRUGO,
+ show_occ_caps, NULL, 1, 1),
+};
+static struct sensor_device_attribute_2 caps_norm_powercap[] = {
+ SENSOR_ATTR_2(caps_norm_powercap, S_IRUGO, show_occ_caps,
+ NULL, 2, 1),
+};
+static struct sensor_device_attribute_2 caps_max_powercap[] = {
+ SENSOR_ATTR_2(caps_max_powercap, S_IRUGO, show_occ_caps, NULL, 3, 1),
+};
+static struct sensor_device_attribute_2 caps_min_powercap[] = {
+ SENSOR_ATTR_2(caps_min_powercap, S_IRUGO, show_occ_caps, NULL, 4, 1),
+};
+static struct sensor_device_attribute_2 caps_user_powerlimit[] = {
+ SENSOR_ATTR_2(caps_user_powerlimit, S_IRUGO, show_occ_caps, NULL, 5, 1),
+};
+#define CAPS_UNIT_ATTRS(X) \
+{ &caps_curr_powercap[X].dev_attr.attr, \
+ &caps_curr_powerreading[X].dev_attr.attr, \
+ &caps_norm_powercap[X].dev_attr.attr, \
+ &caps_max_powercap[X].dev_attr.attr, \
+ &caps_min_powercap[X].dev_attr.attr, \
+ &caps_user_powerlimit[X].dev_attr.attr, \
+ NULL \
+}
+
+/* 10-core CPU, occ has 1 caps sensors */
+static struct attribute *occ_caps_attr[][7] = {
+ CAPS_UNIT_ATTRS(0),
+};
+static const struct attribute_group occ_caps_attr_group[] = {
+ { .attrs = occ_caps_attr[0] },
+};
+
+static struct sensor_device_attribute power_input[] = {
+ SENSOR_ATTR(power1_input, S_IRUGO, show_occ_power_input, NULL, 1),
+ SENSOR_ATTR(power2_input, S_IRUGO, show_occ_power_input, NULL, 2),
+ SENSOR_ATTR(power3_input, S_IRUGO, show_occ_power_input, NULL, 3),
+ SENSOR_ATTR(power4_input, S_IRUGO, show_occ_power_input, NULL, 4),
+ SENSOR_ATTR(power5_input, S_IRUGO, show_occ_power_input, NULL, 5),
+ SENSOR_ATTR(power6_input, S_IRUGO, show_occ_power_input, NULL, 6),
+ SENSOR_ATTR(power7_input, S_IRUGO, show_occ_power_input, NULL, 7),
+ SENSOR_ATTR(power8_input, S_IRUGO, show_occ_power_input, NULL, 8),
+ SENSOR_ATTR(power9_input, S_IRUGO, show_occ_power_input, NULL, 9),
+ SENSOR_ATTR(power10_input, S_IRUGO, show_occ_power_input, NULL, 10),
+ SENSOR_ATTR(power11_input, S_IRUGO, show_occ_power_input, NULL, 11),
+};
+
+static struct sensor_device_attribute power_label[] = {
+ SENSOR_ATTR(power1_label, S_IRUGO, show_occ_power_label, NULL, 1),
+ SENSOR_ATTR(power2_label, S_IRUGO, show_occ_power_label, NULL, 2),
+ SENSOR_ATTR(power3_label, S_IRUGO, show_occ_power_label, NULL, 3),
+ SENSOR_ATTR(power4_label, S_IRUGO, show_occ_power_label, NULL, 4),
+ SENSOR_ATTR(power5_label, S_IRUGO, show_occ_power_label, NULL, 5),
+ SENSOR_ATTR(power6_label, S_IRUGO, show_occ_power_label, NULL, 6),
+ SENSOR_ATTR(power7_label, S_IRUGO, show_occ_power_label, NULL, 7),
+ SENSOR_ATTR(power8_label, S_IRUGO, show_occ_power_label, NULL, 8),
+ SENSOR_ATTR(power9_label, S_IRUGO, show_occ_power_label, NULL, 9),
+ SENSOR_ATTR(power10_label, S_IRUGO, show_occ_power_label, NULL, 10),
+ SENSOR_ATTR(power11_label, S_IRUGO, show_occ_power_label, NULL, 11),
+};
+
+#define POWER_UNIT_ATTRS(X) \
+{ &power_input[X].dev_attr.attr, \
+ &power_label[X].dev_attr.attr, \
+ NULL \
+}
+
+/* 10-core CPU, occ has 11 power sensors, more socket, more sensors */
+static struct attribute *occ_power_attr[][3] = {
+ POWER_UNIT_ATTRS(0),
+ POWER_UNIT_ATTRS(1),
+ POWER_UNIT_ATTRS(2),
+ POWER_UNIT_ATTRS(3),
+ POWER_UNIT_ATTRS(4),
+ POWER_UNIT_ATTRS(5),
+ POWER_UNIT_ATTRS(6),
+ POWER_UNIT_ATTRS(7),
+ POWER_UNIT_ATTRS(8),
+ POWER_UNIT_ATTRS(9),
+ POWER_UNIT_ATTRS(10),
+};
+
+static const struct attribute_group occ_power_attr_group[] = {
+ { .attrs = occ_power_attr[0] },
+ { .attrs = occ_power_attr[1] },
+ { .attrs = occ_power_attr[2] },
+ { .attrs = occ_power_attr[3] },
+ { .attrs = occ_power_attr[4] },
+ { .attrs = occ_power_attr[5] },
+ { .attrs = occ_power_attr[6] },
+ { .attrs = occ_power_attr[7] },
+ { .attrs = occ_power_attr[8] },
+ { .attrs = occ_power_attr[9] },
+ { .attrs = occ_power_attr[10] },
+};
+
+static void occ_remove_sysfs_files(struct device *dev)
+{
+ int i = 0;
+
+ for (i = 0; i < ARRAY_SIZE(occ_temp_attr_group); i++)
+ sysfs_remove_group(&dev->kobj, &occ_temp_attr_group[i]);
+
+ for (i = 0; i < ARRAY_SIZE(occ_freq_attr_group); i++)
+ sysfs_remove_group(&dev->kobj, &occ_freq_attr_group[i]);
+
+ for (i = 0; i < ARRAY_SIZE(occ_power_attr_group); i++)
+ sysfs_remove_group(&dev->kobj, &occ_power_attr_group[i]);
+
+ for (i = 0; i < ARRAY_SIZE(occ_caps_attr_group); i++)
+ sysfs_remove_group(&dev->kobj, &occ_caps_attr_group[i]);
+}
+
+
+static int occ_create_sysfs_attribute(struct device *dev)
+{
+ /* The sensor number varies for different
+ * platform depending on core number. We'd better
+ * create them dynamically
+ */
+ struct occ_drv_data *drv_data = dev_get_drvdata(dev);
+ int i = 0;
+ int num_of_sensors = 0;
+ int ret = 0;
+ struct occ_response *rsp = NULL;
+
+ /* get sensor number from occ. */
+ ret = occ_update_device(dev);
+ if (ret != 0) {
+ dev_err(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
+ return ret;
+ }
+
+ rsp = &drv_data->occ_resp;
+ if (!rsp->data.blocks)
+ return -1;
+
+ /* temp sensors */
+ if (rsp->temp_block_id >= 0) {
+ num_of_sensors =
+ rsp->data.blocks[rsp->temp_block_id].num_of_sensors;
+ for (i = 0; i < num_of_sensors; i++) {
+ ret = sysfs_create_group(&drv_data->hwmon_dev->kobj,
+ &occ_temp_attr_group[i]);
+ if (ret) {
+ dev_err(dev, "error create temp sysfs entry\n");
+ goto error;
+ }
+ }
+ }
+
+ /* freq sensors */
+ if (rsp->freq_block_id >= 0) {
+ num_of_sensors =
+ rsp->data.blocks[rsp->freq_block_id].num_of_sensors;
+ for (i = 0; i < num_of_sensors; i++) {
+ ret = sysfs_create_group(&drv_data->hwmon_dev->kobj,
+ &occ_freq_attr_group[i]);
+ if (ret) {
+ dev_err(dev, "error create freq sysfs entry\n");
+ goto error;
+ }
+ }
+ }
+
+ /* power sensors */
+ dev_dbg(dev, "power_block_id: %d\n", rsp->power_block_id);
+ if (rsp->power_block_id >= 0) {
+ num_of_sensors =
+ rsp->data.blocks[rsp->power_block_id].num_of_sensors;
+ for (i = 0; i < num_of_sensors; i++) {
+ ret = sysfs_create_group(&drv_data->hwmon_dev->kobj,
+ &occ_power_attr_group[i]);
+ if (ret) {
+ dev_err(dev, "error create power sysfs entry\n");
+ goto error;
+ }
+ }
+ }
+
+ /* caps sensors */
+ dev_dbg(dev, "caps_block_id: %d\n", rsp->caps_block_id);
+ if (rsp->caps_block_id >= 0) {
+ num_of_sensors =
+ rsp->data.blocks[rsp->caps_block_id].num_of_sensors;
+ for (i = 0; i < num_of_sensors; i++) {
+ ret = sysfs_create_group(&drv_data->hwmon_dev->kobj,
+ &occ_caps_attr_group[i]);
+ if (ret) {
+ dev_err(dev, "error create caps sysfs entry\n");
+ goto error;
+ }
+ }
+ }
+
+ return 0;
+error:
+ occ_remove_sysfs_files(drv_data->hwmon_dev);
+ return ret;
+}
+
+/* device probe and removal */
+
+#define OCC_I2C_ADDR 0x50
+#define OCC_I2C_NAME "occ-i2c"
+
+enum occ_type {
+ occ_id,
+};
+
+static int occ_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct occ_drv_data *data;
+ unsigned long funcs;
+ struct device_node *np = dev->of_node;
+ int ret = 0;
+
+ data = devm_kzalloc(dev, sizeof(struct occ_drv_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->client = client;
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->update_lock);
+ data->sample_time = HZ;
+
+ /* We have several ways to get client address:
+ * 1. i2c_board_info
+ * 2. device table
+ * 3. user space sysfs new_device interface.
+ * Here we use the 3rd method
+ */
+
+ /* Read address from device table. The address is supposed to be
+ * assigned by i2c-core using the address_list, but that does not work.
+ * Have to read from DT explicilty
+ */
+
+ /*
+ * if (of_property_read_u32(np, "reg", &pval)) {
+ * dev_err(&client->dev, "invalid reg\n");
+ * }
+ * client->addr = pval;
+ */
+
+ /* configure the driver */
+ dev_dbg(dev, "occ register hwmon @0x%x\n", client->addr);
+
+ /* create sysfs attributes based on sensor number read from OCC */
+ data->hwmon_dev = hwmon_device_register(dev);
+ if (IS_ERR(data->hwmon_dev))
+ return PTR_ERR(data->hwmon_dev);
+
+ ret = occ_create_sysfs_attribute(dev);
+ if (ret) {
+ hwmon_device_unregister(data->hwmon_dev);
+ return ret;
+ }
+
+ data->hwmon_dev->parent = dev;
+
+ dev_dbg(dev, "%s: sensor '%s'\n",
+ dev_name(data->hwmon_dev), client->name);
+
+ funcs = i2c_get_functionality(client->adapter);
+ dev_dbg(dev, "i2c adaptor supports function: 0x%lx\n", funcs);
+
+ dev_info(dev, "occ i2c driver ready: i2c addr at 0x%x\n", client->addr);
+
+ return 0;
+}
+
+static int occ_remove(struct i2c_client *client)
+{
+ struct occ_drv_data *data = i2c_get_clientdata(client);
+
+ /* free allocated sensor memory */
+ deinit_occ_resp_buf(&data->occ_resp);
+
+ occ_remove_sysfs_files(data->hwmon_dev);
+ hwmon_device_unregister(data->hwmon_dev);
+ return 0;
+}
+
+/* used by old-style board info. */
+static const struct i2c_device_id occ_ids[] = {
+ { OCC_I2C_NAME, occ_id, },
+ { /* LIST END */ }
+};
+MODULE_DEVICE_TABLE(i2c, occ_ids);
+
+/* use by device table */
+static const struct of_device_id i2c_occ_of_match[] = {
+ {.compatible = "ibm,occ-i2c"},
+ {},
+};
+MODULE_DEVICE_TABLE(of, i2c_occ_of_match);
+
+#ifdef CONFIG_PM
+static int occ_suspend(struct device *dev)
+{
+ /* TODO */
+ return 0;
+}
+
+static int occ_resume(struct device *dev)
+{
+ /* TODO */
+ return 0;
+}
+
+static const struct dev_pm_ops occ_dev_pm_ops = {
+ .suspend = occ_suspend,
+ .resume = occ_resume,
+};
+#define OCC_DEV_PM_OPS (&occ_dev_pm_ops)
+#else
+#define OCC_DEV_PM_OPS NULL
+#endif /* CONFIG_PM */
+
+/* i2c-core uses i2c-detect() to detect device in bellow address list.
+ * If exists, address will be assigned to client.
+ * It is also possible to read address from device table.
+ */
+static const unsigned short normal_i2c[] = {0x50, 0x51, I2C_CLIENT_END };
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int occ_detect(struct i2c_client *new_client,
+ struct i2c_board_info *info)
+{
+ /* i2c-core needs this function to instantiate new device */
+ strncpy(info->type, OCC_I2C_NAME, sizeof(OCC_I2C_NAME));
+ return 0;
+}
+
+static struct i2c_driver occ_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = OCC_I2C_NAME,
+ .pm = OCC_DEV_PM_OPS,
+ .of_match_table = i2c_occ_of_match,
+ },
+ .probe = occ_probe,
+ .remove = occ_remove,
+ .id_table = occ_ids,
+ .address_list = normal_i2c,
+ .detect = occ_detect,
+};
+
+module_i2c_driver(occ_driver);
+
+MODULE_AUTHOR("Li Yi <shliyi at cn.ibm.com>");
+MODULE_DESCRIPTION("BMC OCC hwmon driver");
+MODULE_LICENSE("GPL");
--
2.6.3
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