diff options
| -rw-r--r-- | drivers/spi/spi-davinci.c | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c index 276a3884fb3c..ff54f73dce4b 100644 --- a/drivers/spi/spi-davinci.c +++ b/drivers/spi/spi-davinci.c @@ -397,24 +397,21 @@ static int davinci_spi_setup(struct spi_device *spi) struct spi_master *master = spi->master; struct device_node *np = spi->dev.of_node; bool internal_cs = true; - unsigned long flags = GPIOF_DIR_OUT; dspi = spi_master_get_devdata(spi->master); pdata = &dspi->pdata; - flags |= (spi->mode & SPI_CS_HIGH) ? GPIOF_INIT_LOW : GPIOF_INIT_HIGH; - if (!(spi->mode & SPI_NO_CS)) { if (np && (master->cs_gpios != NULL) && (spi->cs_gpio >= 0)) { - retval = gpio_request_one(spi->cs_gpio, - flags, dev_name(&spi->dev)); + retval = gpio_direction_output( + spi->cs_gpio, !(spi->mode & SPI_CS_HIGH)); internal_cs = false; } else if (pdata->chip_sel && spi->chip_select < pdata->num_chipselect && pdata->chip_sel[spi->chip_select] != SPI_INTERN_CS) { spi->cs_gpio = pdata->chip_sel[spi->chip_select]; - retval = gpio_request_one(spi->cs_gpio, - flags, dev_name(&spi->dev)); + retval = gpio_direction_output( + spi->cs_gpio, !(spi->mode & SPI_CS_HIGH)); internal_cs = false; } } @@ -441,8 +438,6 @@ static int davinci_spi_setup(struct spi_device *spi) static void davinci_spi_cleanup(struct spi_device *spi) { - if (spi->cs_gpio >= 0) - gpio_free(spi->cs_gpio); } static int davinci_spi_check_error(struct davinci_spi *dspi, int int_status) @@ -967,6 +962,27 @@ static int davinci_spi_probe(struct platform_device *pdev) if (dspi->version == SPI_VERSION_2) dspi->bitbang.flags |= SPI_READY; + if (pdev->dev.of_node) { + int i; + + for (i = 0; i < pdata->num_chipselect; i++) { + int cs_gpio = of_get_named_gpio(pdev->dev.of_node, + "cs-gpios", i); + + if (cs_gpio == -EPROBE_DEFER) { + ret = cs_gpio; + goto free_clk; + } + + if (gpio_is_valid(cs_gpio)) { + ret = devm_gpio_request(&pdev->dev, cs_gpio, + dev_name(&pdev->dev)); + if (ret) + goto free_clk; + } + } + } + r = platform_get_resource(pdev, IORESOURCE_DMA, 0); if (r) dma_rx_chan = r->start; |