96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
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#include <linux/delay.h>
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#include "ff_log.h"
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#include "ff_err.h"
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#include "ff_spi.h"
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#include "ff_chip.h"
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#undef LOG_TAG
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#define LOG_TAG "focaltech:ft93xx"
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#define FW93xx_CMD_SRAM_WRITE 0x05
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#define FW93xx_CMD_SRAM_READ 0x04
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void fw93xx_sram_write(uint16_t addr, uint16_t data)
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{
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int tx_len,dlen;
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static uint8_t tx_buffer[MAX_XFER_BUF_SIZE] = {0, };
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ff_sram_buf_t *tx_buf = TYPE_OF(ff_sram_buf_t, tx_buffer);
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FF_LOGV("'%s' enter.", __func__);
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/* Sign the package. */
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tx_buf->cmd[0] = (uint8_t)( FW93xx_CMD_SRAM_WRITE);
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tx_buf->cmd[1] = (uint8_t)(~FW93xx_CMD_SRAM_WRITE);
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/* Write it repeatedly. */
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dlen = 2;
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/* Packing. */
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tx_buf->addr = u16_swap_endian(addr | 0x8000);
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tx_buf->dlen = u16_swap_endian((dlen/2)?(dlen/2-1):(dlen/2));
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tx_len = sizeof(ff_sram_buf_t)/2*2 + dlen;
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tx_buf->data[0] = data >> 8;
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tx_buf->data[1] = data & 0xff;
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/* Low-level transfer. */
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ff_spi_write_buf(tx_buf, tx_len);
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}
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uint16_t fw93xx_read_sram(uint16_t addr)
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{
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int tx_len;
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int dlen;
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uint8_t ucbuff[8];
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uint16_t ustemp;
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ff_sram_buf_t tx_buffer, *tx_buf = &tx_buffer;
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uint8_t *p_data = TYPE_OF(uint8_t, ucbuff);
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/* Sign the package. */
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tx_buf->cmd[0] = (uint8_t)( FW93xx_CMD_SRAM_READ);
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tx_buf->cmd[1] = (uint8_t)(~FW93xx_CMD_SRAM_READ);
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/* Read it repeatedly. */
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dlen = 2;
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/* Packing. */
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tx_buf->addr = u16_swap_endian(addr | 0x8000);
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tx_buf->dlen = u16_swap_endian((dlen/2)?(dlen/2-1):(dlen/2));
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tx_len = sizeof(ff_sram_buf_t)/2*2;
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/* Low-level transfer. */
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ff_spi_write_then_read_buf(tx_buf, tx_len, p_data, dlen);
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ustemp = p_data[0];
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ustemp = (ustemp << 8) + p_data[1];
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return ustemp;
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}
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void fw93xx_int_mask_set(uint16_t usdata)
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{
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uint16_t usAddr;
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usAddr = 0x3500/2 + 0x03;
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fw93xx_sram_write(usAddr, usdata);
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}
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void fw93xx_intflag_clear(uint16_t usdata)
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{
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uint16_t usAddr;
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usAddr = 0x3500/2 + 0x04;
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fw93xx_sram_write(usAddr, usdata);
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}
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uint16_t fw93xx_chipid_get(void)
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{
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uint16_t usAddr,usData;
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usAddr = 0x3500/2 + 0x0B;
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usData = fw93xx_read_sram(usAddr);
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FF_LOGE("got device id 0x%04x", usData);
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return usData;
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}
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