diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-s3c64xx.c | 37 |
1 files changed, 11 insertions, 26 deletions
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 75a56968b14c..b1e26f00cd05 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -197,7 +197,6 @@ struct s3c64xx_spi_driver_data { struct s3c64xx_spi_dma_data tx_dma; struct s3c64xx_spi_port_config *port_conf; unsigned int port_id; - bool cs_gpio; }; static void flush_fifo(struct s3c64xx_spi_driver_data *sdd) @@ -754,10 +753,8 @@ static struct s3c64xx_spi_csinfo *s3c64xx_get_slave_ctrldata( { struct s3c64xx_spi_csinfo *cs; struct device_node *slave_np, *data_np = NULL; - struct s3c64xx_spi_driver_data *sdd; u32 fb_delay = 0; - sdd = spi_master_get_devdata(spi->master); slave_np = spi->dev.of_node; if (!slave_np) { dev_err(&spi->dev, "device node not found\n"); @@ -776,10 +773,7 @@ static struct s3c64xx_spi_csinfo *s3c64xx_get_slave_ctrldata( return ERR_PTR(-ENOMEM); } - /* The CS line is asserted/deasserted by the gpio pin */ - if (sdd->cs_gpio) - cs->line = of_get_named_gpio(data_np, "cs-gpio", 0); - + cs->line = of_get_named_gpio(data_np, "cs-gpio", 0); if (!gpio_is_valid(cs->line)) { dev_err(&spi->dev, "chip select gpio is not specified or invalid\n"); kfree(cs); @@ -818,20 +812,17 @@ static int s3c64xx_spi_setup(struct spi_device *spi) } if (!spi_get_ctldata(spi)) { - /* Request gpio only if cs line is asserted by gpio pins */ - if (sdd->cs_gpio) { - err = gpio_request_one(cs->line, GPIOF_OUT_INIT_HIGH, - dev_name(&spi->dev)); - if (err) { - dev_err(&spi->dev, - "Failed to get /CS gpio [%d]: %d\n", - cs->line, err); - goto err_gpio_req; - } - - spi->cs_gpio = cs->line; + err = gpio_request_one(cs->line, GPIOF_OUT_INIT_HIGH, + dev_name(&spi->dev)); + if (err) { + dev_err(&spi->dev, + "Failed to get /CS gpio [%d]: %d\n", + cs->line, err); + goto err_gpio_req; } + spi->cs_gpio = cs->line; + spi_set_ctldata(spi, cs); } @@ -897,10 +888,8 @@ err_gpio_req: static void s3c64xx_spi_cleanup(struct spi_device *spi) { struct s3c64xx_spi_csinfo *cs = spi_get_ctldata(spi); - struct s3c64xx_spi_driver_data *sdd; - sdd = spi_master_get_devdata(spi->master); - if (spi->cs_gpio) { + if (cs) { gpio_free(spi->cs_gpio); if (spi->dev.of_node) kfree(cs); @@ -1075,11 +1064,7 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) sdd->cntrlr_info = sci; sdd->pdev = pdev; sdd->sfr_start = mem_res->start; - sdd->cs_gpio = true; if (pdev->dev.of_node) { - if (!of_find_property(pdev->dev.of_node, "cs-gpio", NULL)) - sdd->cs_gpio = false; - ret = of_alias_get_id(pdev->dev.of_node, "spi"); if (ret < 0) { dev_err(&pdev->dev, "failed to get alias id, errno %d\n", |