linux-imx

    if (pdata)

        spi_gpio->pdata = *pdata;

​

    status = spi_gpio_request(&pdev->dev, spi_gpio,

                  pdata->num_chipselect, &master_flags);

    if (status)

        return status;

​

    master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);

    master->flags = master_flags;

    master->bus_num = pdev->id;

    /* The master needs to think there is a chipselect even if not connected */

    master->num_chipselect = spi_gpio->has_cs ? pdata->num_chipselect : 1;

    master->setup = spi_gpio_setup;

    master->cleanup = spi_gpio_cleanup;

#ifdef CONFIG_OF

    master->dev.of_node = pdev->dev.of_node;

#endif

​

        spi_gpio->bitbang.txrx_word[SPI_MODE_2] = spi_gpio_txrx_word_mode2;

        spi_gpio->bitbang.txrx_word[SPI_MODE_3] = spi_gpio_txrx_word_mode3;

    } else {

        spi_gpio->bitbang.txrx_word[SPI_MODE_0] = spi_gpio_spec_txrx_word_mode0;

        spi_gpio->bitbang.txrx_word[SPI_MODE_1] = spi_gpio_spec_txrx_word_mode1;

        spi_gpio->bitbang.txrx_word[SPI_MODE_2] = spi_gpio_spec_txrx_word_mode2;

        spi_gpio->bitbang.txrx_word[SPI_MODE_3] = spi_gpio_spec_txrx_word_mode3;

    }

    spi_gpio->bitbang.setup_transfer = spi_bitbang_setup_transfer;

​

    status = spi_bitbang_start(&spi_gpio->bitbang);

    if (status)

        spi_master_put(master);

​

    return status;

}

​

static int spi_gpio_remove(struct platform_device *pdev)

{