diff options
Diffstat (limited to 'camera/sensor/io/msm_camera_spi.h')
| -rw-r--r-- | camera/sensor/io/msm_camera_spi.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/camera/sensor/io/msm_camera_spi.h b/camera/sensor/io/msm_camera_spi.h new file mode 100644 index 00000000..5e0dc425 --- /dev/null +++ b/camera/sensor/io/msm_camera_spi.h @@ -0,0 +1,120 @@ +/* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * 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. + */ + +#ifndef __MSM_CAMERA_SPI_H +#define __MSM_CAMERA_SPI_H + +#include <linux/spi/spi.h> +#include <lenovo_media/msm_cam_sensor.h> +#include "msm_camera_i2c.h" + +#define MAX_SPI_SIZE 110 +#define SPI_DYNAMIC_ALLOC + +/** + * Common SPI communication scheme + * tx: <opcode>[addr][wait][write buffer] + * rx: [read buffer] + * Some inst require polling busy reg until it's done + */ +struct msm_camera_spi_inst { + uint8_t opcode; /* one-byte opcode */ + uint8_t addr_len; /* addr len in bytes */ + uint8_t dummy_len; /* setup cycles */ + uint8_t delay_intv; /* delay intv for this inst (ms) */ + uint8_t delay_count; /* total delay count for this inst */ +}; + +struct msm_spi_write_burst_data { + u8 data_msb; + u8 data_lsb; +}; + +struct msm_spi_write_burst_packet { + u8 cmd; + u8 addr_msb; + u8 addr_lsb; + struct msm_spi_write_burst_data data_arr[MAX_SPI_SIZE]; +}; + +struct msm_camera_burst_info { + uint32_t burst_addr; + uint32_t burst_start; + uint32_t burst_len; + uint32_t chunk_size; +}; + +struct msm_camera_spi_inst_tbl { + struct msm_camera_spi_inst read; + struct msm_camera_spi_inst read_seq; + struct msm_camera_spi_inst query_id; + struct msm_camera_spi_inst page_program; + struct msm_camera_spi_inst write_enable; + struct msm_camera_spi_inst read_status; + struct msm_camera_spi_inst erase; +}; + +struct msm_camera_spi_client { + struct spi_device *spi_master; + struct msm_camera_spi_inst_tbl cmd_tbl; + uint8_t device_id0; + uint8_t device_id1; + uint8_t mfr_id0; + uint8_t mfr_id1; + uint8_t retry_delay; /* ms */ + uint8_t retries; /* retry times upon failure */ + uint8_t busy_mask; /* busy bit in status reg */ + uint16_t page_size; /* page size for page program */ + uint32_t erase_size; /* minimal erase size */ +}; + +static __always_inline +uint16_t msm_camera_spi_get_hlen(struct msm_camera_spi_inst *inst) +{ + return sizeof(inst->opcode) + inst->addr_len + inst->dummy_len; +} + +int32_t msm_camera_spi_read(struct msm_camera_i2c_client *client, + uint32_t addr, uint16_t *data, + enum msm_camera_i2c_data_type data_type); + +int32_t msm_camera_spi_read_seq(struct msm_camera_i2c_client *client, + uint32_t addr, uint8_t *data, uint32_t num_byte); + +int32_t msm_camera_spi_read_seq_l(struct msm_camera_i2c_client *client, + uint32_t addr, uint32_t num_byte, char *tx, char *rx); + +int32_t msm_camera_spi_query_id(struct msm_camera_i2c_client *client, + uint32_t addr, uint8_t *data, uint32_t num_byte); + +int32_t msm_camera_spi_write_seq(struct msm_camera_i2c_client *client, + uint32_t addr, uint8_t *data, uint32_t num_byte); + +int32_t msm_camera_spi_erase(struct msm_camera_i2c_client *client, + uint32_t addr, uint32_t size); + +int32_t msm_camera_spi_write(struct msm_camera_i2c_client *client, + uint32_t addr, uint16_t data, enum msm_camera_i2c_data_type data_type); + +int32_t msm_camera_spi_write_table(struct msm_camera_i2c_client *client, + struct msm_camera_i2c_reg_setting *write_setting); + +int32_t msm_camera_spi_write_burst(struct msm_camera_i2c_client *client, + struct msm_camera_i2c_reg_array *reg_setting, uint32_t reg_size, + uint32_t buf_len, uint32_t addr, + enum msm_camera_i2c_data_type data_type); + +int32_t msm_camera_spi_read_burst(struct msm_camera_i2c_client *client, + uint32_t read_byte, uint8_t *buffer, uint32_t addr, + enum msm_camera_i2c_data_type data_type); + +#endif |