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aa195fe49b
Add method to parse the response from the OCC poll command. This only needs to be done during probe(), since the OCC shouldn't change the number or format of sensors while it's running. The parsed response allows quick access to sensor data, as well as information on the number and version of sensors, which we need to instantiate hwmon attributes. Signed-off-by: Eddie James <eajames@linux.ibm.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
89 lines
1.7 KiB
C
89 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef OCC_COMMON_H
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#define OCC_COMMON_H
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struct device;
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#define OCC_RESP_DATA_BYTES 4089
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/*
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* Same response format for all OCC versions.
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* Allocate the largest possible response.
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*/
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struct occ_response {
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u8 seq_no;
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u8 cmd_type;
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u8 return_status;
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__be16 data_length;
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u8 data[OCC_RESP_DATA_BYTES];
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__be16 checksum;
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} __packed;
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struct occ_sensor_data_block_header {
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u8 eye_catcher[4];
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u8 reserved;
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u8 sensor_format;
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u8 sensor_length;
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u8 num_sensors;
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} __packed;
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struct occ_sensor_data_block {
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struct occ_sensor_data_block_header header;
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u32 data;
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} __packed;
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struct occ_poll_response_header {
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u8 status;
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u8 ext_status;
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u8 occs_present;
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u8 config_data;
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u8 occ_state;
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u8 mode;
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u8 ips_status;
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u8 error_log_id;
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__be32 error_log_start_address;
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__be16 error_log_length;
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u16 reserved;
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u8 occ_code_level[16];
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u8 eye_catcher[6];
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u8 num_sensor_data_blocks;
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u8 sensor_data_block_header_version;
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} __packed;
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struct occ_poll_response {
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struct occ_poll_response_header header;
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struct occ_sensor_data_block block;
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} __packed;
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struct occ_sensor {
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u8 num_sensors;
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u8 version;
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void *data; /* pointer to sensor data start within response */
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};
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/*
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* OCC only provides one sensor data block of each type, but any number of
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* sensors within that block.
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*/
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struct occ_sensors {
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struct occ_sensor temp;
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struct occ_sensor freq;
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struct occ_sensor power;
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struct occ_sensor caps;
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struct occ_sensor extended;
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};
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struct occ {
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struct device *bus_dev;
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struct occ_response resp;
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struct occ_sensors sensors;
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u8 poll_cmd_data; /* to perform OCC poll command */
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int (*send_cmd)(struct occ *occ, u8 *cmd);
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};
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int occ_setup(struct occ *occ, const char *name);
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#endif /* OCC_COMMON_H */
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