63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
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/*
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* dbmdx-i2c.h -- DBMDX I2C interface common functions
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*
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* Copyright (C) 2014 DSP Group
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _DBMDX_I2C_COMMON_H
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#define _DBMDX_I2C_COMMON_H
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#if IS_ENABLED(CONFIG_PM_WAKELOCKS)
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#include <linux/pm_wakeup.h>
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#endif
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#define RETRY_COUNT 5
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struct dbmdx_i2c_private;
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struct dbmdx_i2c_data {
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u32 boot_addr;
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u32 operation_addr;
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u32 read_chunk_size;
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u32 write_chunk_size;
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u8 read_buf[MAX_REQ_SIZE];
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};
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struct dbmdx_i2c_private {
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struct device *dev;
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struct dbmdx_i2c_data *pdata;
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struct i2c_client *client;
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struct chip_interface chip;
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#if IS_ENABLED(CONFIG_PM_WAKELOCKS)
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struct wakeup_source *ps_nosuspend_wl;
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#endif
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u32 interface_enabled;
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};
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ssize_t write_i2c_data(struct dbmdx_private *p, const void *buf,
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size_t len);
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ssize_t read_i2c_data(struct dbmdx_private *p, void *buf, size_t len);
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ssize_t send_i2c_cmd_va(struct dbmdx_private *p, u32 command,
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u16 *response);
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ssize_t send_i2c_cmd_vqe(struct dbmdx_private *p,
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u32 command, u16 *response);
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int send_i2c_cmd_boot(struct dbmdx_private *p, u32 command);
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int i2c_verify_boot_checksum(struct dbmdx_private *p,
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const void *checksum, size_t chksum_len);
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int i2c_verify_chip_id(struct dbmdx_private *p);
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int i2c_common_probe(struct i2c_client *client,
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const struct i2c_device_id *id);
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int i2c_common_remove(struct i2c_client *client);
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void i2c_interface_resume(struct dbmdx_i2c_private *i2c_p);
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void i2c_interface_suspend(struct dbmdx_i2c_private *i2c_p);
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#endif
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