diff options
Diffstat (limited to 'arch/arm/mach-s3c/setup-sdhci-gpio-s3c64xx.c')
| -rw-r--r-- | arch/arm/mach-s3c/setup-sdhci-gpio-s3c64xx.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c/setup-sdhci-gpio-s3c64xx.c b/arch/arm/mach-s3c/setup-sdhci-gpio-s3c64xx.c new file mode 100644 index 0000000000..646ff949ac --- /dev/null +++ b/arch/arm/mach-s3c/setup-sdhci-gpio-s3c64xx.c @@ -0,0 +1,53 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright 2008 Simtec Electronics +// Ben Dooks <ben@simtec.co.uk> +// http://armlinux.simtec.co.uk/ +// +// S3C64XX - Helper functions for setting up SDHCI device(s) GPIO (HSMMC) + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/gpio.h> + +#include "gpio-cfg.h" +#include "sdhci.h" +#include "gpio-samsung.h" + +void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) +{ + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; + + /* Set all the necessary GPG pins to special-function 2 */ + s3c_gpio_cfgrange_nopull(S3C64XX_GPG(0), 2 + width, S3C_GPIO_SFN(2)); + + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { + s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP); + s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(2)); + } +} + +void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) +{ + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; + + /* Set all the necessary GPH pins to special-function 2 */ + s3c_gpio_cfgrange_nopull(S3C64XX_GPH(0), 2 + width, S3C_GPIO_SFN(2)); + + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { + s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP); + s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3)); + } +} + +void s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width) +{ + /* Set all the necessary GPH pins to special-function 3 */ + s3c_gpio_cfgrange_nopull(S3C64XX_GPH(6), width, S3C_GPIO_SFN(3)); + + /* Set all the necessary GPC pins to special-function 3 */ + s3c_gpio_cfgrange_nopull(S3C64XX_GPC(4), 2, S3C_GPIO_SFN(3)); +} |