70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
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/*
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* dbmdx-spi.h -- DBMDX SPI 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_SPI_H
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#define _DBMDX_SPI_H
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#ifdef 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_spi_private;
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#define DBMDX_VA_SPI_CMD_PADDED_SIZE 150
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struct dbmdx_spi_data {
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u32 spi_speed;
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u32 read_chunk_size;
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u32 write_chunk_size;
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u32 dma_min_buffer_size;
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u8 *send;
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u8 *recv;
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u32 bits_per_word;
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u32 bytes_per_word;
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};
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struct dbmdx_spi_private {
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struct device *dev;
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struct dbmdx_spi_data *pdata;
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struct spi_device *client;
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struct chip_interface chip;
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#ifdef CONFIG_PM_WAKELOCKS
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struct wakeup_source ps_nosuspend_wl;
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#endif
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u16 post_pll_div;
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u32 interface_enabled;
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};
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ssize_t read_spi_data(struct dbmdx_private *p, void *buf, size_t len);
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ssize_t send_spi_data(struct dbmdx_private *p, const void *buf,
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size_t len);
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ssize_t write_spi_data(struct dbmdx_private *p, const u8 *buf,
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size_t len);
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int send_spi_cmd_boot(struct dbmdx_private *p, u32 command);
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ssize_t send_spi_cmd_va(struct dbmdx_private *p, u32 command,
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u16 *response);
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ssize_t send_spi_cmd_vqe(struct dbmdx_private *p,
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u32 command, u16 *response);
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int spi_verify_boot_checksum(struct dbmdx_private *p,
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const void *checksum, size_t chksum_len);
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int spi_verify_chip_id(struct dbmdx_private *p);
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int spi_common_probe(struct spi_device *client);
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int spi_common_remove(struct spi_device *client);
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int spi_set_speed(struct dbmdx_private *p, int index);
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void spi_interface_resume(struct dbmdx_spi_private *spi_p);
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void spi_interface_suspend(struct dbmdx_spi_private *spi_p);
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#endif
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