From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Brownell Subject: [patch 2.6.8-rc6 3/3] spi: use generic gpio calls in spi_s3c24xx_gpio Date: Sat, 22 Nov 2008 12:19:17 -0800 Message-ID: <200811221219.17491.david-b@pacbell.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, Ben Dooks To: Andrew Morton Return-path: Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: spi-devel-general-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-spi.vger.kernel.org From: Ben Dooks Change the spi_s3c2410 driver to use the generic gpio calls that are now available. Signed-off-by: Ben Dooks Signed-off-by: David Brownell --- arch/arm/mach-s3c2410/include/mach/spi.h | 2 - drivers/spi/spi_s3c24xx.c | 38 ++++++++++++++++++++++------- 2 files changed, 30 insertions(+), 10 deletions(-) --- a/arch/arm/mach-s3c2410/include/mach/spi.h +++ b/arch/arm/mach-s3c2410/include/mach/spi.h @@ -14,7 +14,7 @@ #define __ASM_ARCH_SPI_H __FILE__ struct s3c2410_spi_info { - unsigned long pin_cs; /* simple gpio cs */ + int pin_cs; /* simple gpio cs */ unsigned int num_cs; /* total chipselects */ int bus_num; /* bus number to use. */ --- a/drivers/spi/spi_s3c24xx.c +++ b/drivers/spi/spi_s3c24xx.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -27,7 +28,6 @@ #include #include -#include #include #include @@ -66,7 +66,7 @@ static inline struct s3c24xx_spi *to_hw( static void s3c24xx_spi_gpiocs(struct s3c2410_spi_info *spi, int cs, int pol) { - s3c2410_gpio_setpin(spi->pin_cs, pol); + gpio_set_value(spi->pin_cs, pol); } static void s3c24xx_spi_chipsel(struct spi_device *spi, int value) @@ -248,8 +248,13 @@ static void s3c24xx_spi_initialsetup(str writeb(SPPIN_DEFAULT, hw->regs + S3C2410_SPPIN); writeb(SPCON_DEFAULT, hw->regs + S3C2410_SPCON); - if (hw->pdata && hw->pdata->gpio_setup) - hw->pdata->gpio_setup(hw->pdata, 1); + 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 __init s3c24xx_spi_probe(struct platform_device *pdev) @@ -343,18 +348,27 @@ static int __init s3c24xx_spi_probe(stru goto err_no_clk; } - s3c24xx_spi_initialsetup(hw); - /* setup any gpio we can */ if (!pdata->set_cs) { - hw->set_cs = s3c24xx_spi_gpiocs; + if (pdata->pin_cs < 0) { + dev_err(&pdev->dev, "No chipselect pin\n"); + goto err_register; + } - s3c2410_gpio_setpin(pdata->pin_cs, 1); - s3c2410_gpio_cfgpin(pdata->pin_cs, S3C2410_GPIO_OUTPUT); + err = gpio_request(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 */ err = spi_bitbang_start(&hw->bitbang); @@ -366,6 +380,9 @@ static int __init s3c24xx_spi_probe(stru return 0; err_register: + if (hw->set_cs == s3c24xx_spi_gpiocs) + gpio_free(pdata->pin_cs); + clk_disable(hw->clk); clk_put(hw->clk); @@ -401,6 +418,9 @@ static int __exit s3c24xx_spi_remove(str free_irq(hw->irq, hw); iounmap(hw->regs); + if (hw->set_cs == s3c24xx_spi_gpiocs) + gpio_free(hw->pdata->pin_cs); + release_resource(hw->ioarea); kfree(hw->ioarea); ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/