diff options
Diffstat (limited to 'drivers/spi/spi-pxa2xx.c')
-rw-r--r-- | drivers/spi/spi-pxa2xx.c | 59 |
1 files changed, 21 insertions, 38 deletions
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 38d053682892..be991266a6ce 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1213,21 +1213,33 @@ static int setup_cs(struct spi_device *spi, struct chip_data *chip, struct pxa2xx_spi_chip *chip_info) { struct driver_data *drv_data = spi_master_get_devdata(spi->master); + struct device *pdev = &drv_data->pdev->dev; + struct gpio_desc *gpiod; int err = 0; + int count; if (chip == NULL) return 0; - if (drv_data->cs_gpiods) { - struct gpio_desc *gpiod; + count = gpiod_count(pdev, "cs"); + if (count > 0) { + if (spi->chip_select >= count) + return -EINVAL; + + gpiod = gpiod_get_index(pdev, "cs", spi->chip_select, + GPIOD_OUT_HIGH); + if (IS_ERR(gpiod)) { + /* Means use native chip select */ + if (PTR_ERR(gpiod) == -ENOENT) + return 0; - gpiod = drv_data->cs_gpiods[spi->chip_select]; - if (gpiod) { - chip->gpio_cs = desc_to_gpio(gpiod); - chip->gpio_cs_inverted = spi->mode & SPI_CS_HIGH; - gpiod_set_value(gpiod, chip->gpio_cs_inverted); + return PTR_ERR(gpiod); } + chip->gpio_cs = desc_to_gpio(gpiod); + chip->gpio_cs_inverted = spi->mode & SPI_CS_HIGH; + gpiod_set_value(gpiod, chip->gpio_cs_inverted); + return 0; } @@ -1415,8 +1427,7 @@ static void cleanup(struct spi_device *spi) if (!chip) return; - if (drv_data->ssp_type != CE4100_SSP && !drv_data->cs_gpiods && - gpio_is_valid(chip->gpio_cs)) + if (drv_data->ssp_type != CE4100_SSP && gpio_is_valid(chip->gpio_cs)) gpio_free(chip->gpio_cs); kfree(chip); @@ -1752,38 +1763,10 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) master->num_chipselect = platform_info->num_chipselect; count = gpiod_count(&pdev->dev, "cs"); - if (count > 0) { - int i; - + if (count > 0) master->num_chipselect = max_t(int, count, master->num_chipselect); - drv_data->cs_gpiods = devm_kcalloc(&pdev->dev, - master->num_chipselect, sizeof(struct gpio_desc *), - GFP_KERNEL); - if (!drv_data->cs_gpiods) { - status = -ENOMEM; - goto out_error_clock_enabled; - } - - for (i = 0; i < master->num_chipselect; i++) { - struct gpio_desc *gpiod; - - gpiod = devm_gpiod_get_index(dev, "cs", i, - GPIOD_OUT_HIGH); - if (IS_ERR(gpiod)) { - /* Means use native chip select */ - if (PTR_ERR(gpiod) == -ENOENT) - continue; - - status = (int)PTR_ERR(gpiod); - goto out_error_clock_enabled; - } else { - drv_data->cs_gpiods[i] = gpiod; - } - } - } - tasklet_init(&drv_data->pump_transfers, pump_transfers, (unsigned long)drv_data); |