On Tuesday, March 15, 2011 22:53:20 Shaohui Xie wrote: > --- a/drivers/mtd/spi/spi_flash.c > +++ b/drivers/mtd/spi/spi_flash.c > @@ -1,6 +1,8 @@ > /* > * SPI flash interface > + * Add support for Freescale eSPI controller
this is not the place for changelogs
> @@ -30,6 +32,7 @@ static int spi_flash_read_write(struct spi_slave *spi,
> unsigned long flags = SPI_XFER_BEGIN;
> int ret;
>
> +#ifndef CONFIG_FSL_ESPI
> if (data_len == 0)
> flags |= SPI_XFER_END;
>
> @@ -43,6 +46,48 @@ static int spi_flash_read_write(struct spi_slave *spi,
> debug("SF: Failed to transfer %zu bytes of data: %d\n",
> data_len, ret);
> }
> +#else
> + struct espi_transfer transfer[1];
> + unsigned char *buffer;
> + size_t buf_len;
> +
> + if (data_in == NULL)
> + buf_len = cmd_len;
> + else
> + buf_len = 2 * cmd_len;
> +
> + buffer = (unsigned char *)malloc(data_len + buf_len);
> + if (!buffer) {
> + debug("SF: Failed to malloc memory.\n");
> + return 1;
> + }
> +
> + memcpy(buffer, cmd, cmd_len);
> + if (data_in == NULL)
> + memcpy(buffer + cmd_len, data_out, data_len);
> +
> + transfer[0].cmd_len = cmd_len;
> + transfer[0].data_len = data_len;
> + transfer[0].tx_buf = buffer;
> + if (data_in == NULL)
> + transfer[0].rx_buf = NULL;
> + else
> + transfer[0].rx_buf = buffer + cmd_len;
> +
> + transfer[0].flags = flags | SPI_XFER_END;
> +
> + spi->transfer = &transfer[0];
> + ret = spi_xfer(spi, 0, NULL, NULL, 0);
> + if (ret) {
> + debug("SF: Failed to send command %02x: %d\n", cmd, ret);
> + return ret;
> + }
> +
> + if (data_in)
> + memcpy(data_in, transfer[0].rx_buf + cmd_len, data_len);
> +
> + free(buffer);
> +#endif
>
> return ret;
> }
yikes, this cant be right
-mike
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