diff options
Diffstat (limited to 'drivers/spi/spi-gpio.c')
| -rw-r--r-- | drivers/spi/spi-gpio.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c index 0626e6e3ea0c..45973ee3ae11 100644 --- a/drivers/spi/spi-gpio.c +++ b/drivers/spi/spi-gpio.c @@ -295,13 +295,15 @@ static int spi_gpio_request(struct device *dev, spi_gpio->miso = devm_gpiod_get_optional(dev, "miso", GPIOD_IN); if (IS_ERR(spi_gpio->miso)) return PTR_ERR(spi_gpio->miso); - if (!spi_gpio->miso) - /* HW configuration without MISO pin */ - *mflags |= SPI_MASTER_NO_RX; + /* + * No setting SPI_MASTER_NO_RX here - if there is only a MOSI + * pin connected the host can still do RX by changing the + * direction of the line. + */ spi_gpio->sck = devm_gpiod_get(dev, "sck", GPIOD_OUT_LOW); - if (IS_ERR(spi_gpio->mosi)) - return PTR_ERR(spi_gpio->mosi); + if (IS_ERR(spi_gpio->sck)) + return PTR_ERR(spi_gpio->sck); for (i = 0; i < num_chipselects; i++) { spi_gpio->cs_gpios[i] = devm_gpiod_get_index(dev, "cs", @@ -423,7 +425,7 @@ static int spi_gpio_probe(struct platform_device *pdev) spi_gpio->bitbang.chipselect = spi_gpio_chipselect; spi_gpio->bitbang.set_line_direction = spi_gpio_set_direction; - if ((master_flags & (SPI_MASTER_NO_TX | SPI_MASTER_NO_RX)) == 0) { + if ((master_flags & SPI_MASTER_NO_TX) == 0) { spi_gpio->bitbang.txrx_word[SPI_MODE_0] = spi_gpio_txrx_word_mode0; spi_gpio->bitbang.txrx_word[SPI_MODE_1] = spi_gpio_txrx_word_mode1; spi_gpio->bitbang.txrx_word[SPI_MODE_2] = spi_gpio_txrx_word_mode2; @@ -447,10 +449,8 @@ static int spi_gpio_probe(struct platform_device *pdev) static int spi_gpio_remove(struct platform_device *pdev) { struct spi_gpio *spi_gpio; - struct spi_gpio_platform_data *pdata; spi_gpio = platform_get_drvdata(pdev); - pdata = dev_get_platdata(&pdev->dev); /* stop() unregisters child devices too */ spi_bitbang_stop(&spi_gpio->bitbang); |