diff options
Diffstat (limited to 'drivers/spi/spi-s3c24xx.c')
| -rw-r--r-- | drivers/spi/spi-s3c24xx.c | 47 |
1 files changed, 3 insertions, 44 deletions
diff --git a/drivers/spi/spi-s3c24xx.c b/drivers/spi/spi-s3c24xx.c index d6f51695ca5b..660aa866af06 100644 --- a/drivers/spi/spi-s3c24xx.c +++ b/drivers/spi/spi-s3c24xx.c @@ -12,7 +12,6 @@ #include <linux/err.h> #include <linux/clk.h> #include <linux/platform_device.h> -#include <linux/gpio.h> #include <linux/io.h> #include <linux/slab.h> @@ -62,9 +61,6 @@ struct s3c24xx_spi { unsigned char fiq_inuse; unsigned char fiq_claimed; - void (*set_cs)(struct s3c2410_spi_info *spi, - int cs, int pol); - /* data buffers */ const unsigned char *tx; unsigned char *rx; @@ -84,29 +80,21 @@ static inline struct s3c24xx_spi *to_hw(struct spi_device *sdev) return spi_master_get_devdata(sdev->master); } -static void s3c24xx_spi_gpiocs(struct s3c2410_spi_info *spi, int cs, int pol) -{ - gpio_set_value(spi->pin_cs, pol); -} - static void s3c24xx_spi_chipsel(struct spi_device *spi, int value) { struct s3c24xx_spi_devstate *cs = spi->controller_state; struct s3c24xx_spi *hw = to_hw(spi); - unsigned int cspol = spi->mode & SPI_CS_HIGH ? 1 : 0; /* change the chipselect state and the state of the spi engine clock */ switch (value) { case BITBANG_CS_INACTIVE: - hw->set_cs(hw->pdata, spi->chip_select, cspol^1); writeb(cs->spcon, hw->regs + S3C2410_SPCON); break; case BITBANG_CS_ACTIVE: writeb(cs->spcon | S3C2410_SPCON_ENSCK, hw->regs + S3C2410_SPCON); - hw->set_cs(hw->pdata, spi->chip_select, cspol); break; } } @@ -452,14 +440,6 @@ static void s3c24xx_spi_initialsetup(struct s3c24xx_spi *hw) writeb(0xff, hw->regs + S3C2410_SPPRE); writeb(SPPIN_DEFAULT, hw->regs + S3C2410_SPPIN); writeb(SPCON_DEFAULT, hw->regs + S3C2410_SPCON); - - if (hw->pdata) { - if (hw->set_cs == s3c24xx_spi_gpiocs) - gpio_direction_output(hw->pdata->pin_cs, 1); - - if (hw->pdata->gpio_setup) - hw->pdata->gpio_setup(hw->pdata, 1); - } } static int s3c24xx_spi_probe(struct platform_device *pdev) @@ -502,6 +482,9 @@ static int s3c24xx_spi_probe(struct platform_device *pdev) master->num_chipselect = hw->pdata->num_cs; master->bus_num = pdata->bus_num; master->bits_per_word_mask = SPI_BPW_MASK(8); + /* we need to call the local chipselect callback */ + master->flags = SPI_MASTER_GPIO_SS; + master->use_gpio_descriptors = true; /* setup the state for the bitbang driver */ @@ -541,27 +524,6 @@ static int s3c24xx_spi_probe(struct platform_device *pdev) goto err_no_pdata; } - /* setup any gpio we can */ - - if (!pdata->set_cs) { - if (pdata->pin_cs < 0) { - dev_err(&pdev->dev, "No chipselect pin\n"); - err = -EINVAL; - goto err_register; - } - - err = devm_gpio_request(&pdev->dev, pdata->pin_cs, - dev_name(&pdev->dev)); - if (err) { - dev_err(&pdev->dev, "Failed to get gpio for cs\n"); - goto err_register; - } - - hw->set_cs = s3c24xx_spi_gpiocs; - gpio_direction_output(pdata->pin_cs, 1); - } else - hw->set_cs = pdata->set_cs; - s3c24xx_spi_initialsetup(hw); /* register our spi controller */ @@ -604,9 +566,6 @@ static int s3c24xx_spi_suspend(struct device *dev) if (ret) return ret; - if (hw->pdata && hw->pdata->gpio_setup) - hw->pdata->gpio_setup(hw->pdata, 0); - clk_disable(hw->clk); return 0; } |