diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-s3c2410/include/mach/spi.h | 7 | ||||
| -rw-r--r-- | arch/arm/plat-s3c24xx/Kconfig | 16 | ||||
| -rw-r--r-- | arch/arm/plat-s3c24xx/Makefile | 8 | ||||
| -rw-r--r-- | arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c | 37 | ||||
| -rw-r--r-- | arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c | 37 |
5 files changed, 105 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/include/mach/spi.h b/arch/arm/mach-s3c2410/include/mach/spi.h index 46d46f5..774f3ad 100644 --- a/arch/arm/mach-s3c2410/include/mach/spi.h +++ b/arch/arm/mach-s3c2410/include/mach/spi.h @@ -22,5 +22,12 @@ struct s3c2410_spi_info { void (*set_cs)(struct s3c2410_spi_info *spi, int cs, int pol); }; +/* Standard setup / suspend routines for SPI GPIO pins. */ + +extern void s3c24xx_spi_gpiocfg_bus0_gpe11_12_13(struct s3c2410_spi_info *spi, + int enable); + +extern void s3c24xx_spi_gpiocfg_bus1_gpg5_6_7(struct s3c2410_spi_info *spi, + int enable); #endif /* __ASM_ARCH_SPI_H */ diff --git a/arch/arm/plat-s3c24xx/Kconfig b/arch/arm/plat-s3c24xx/Kconfig index 0af3872..48ebf35 100644 --- a/arch/arm/plat-s3c24xx/Kconfig +++ b/arch/arm/plat-s3c24xx/Kconfig @@ -49,6 +49,22 @@ config S3C2410_DMA_DEBUG Enable debugging output for the DMA code. This option sends info to the kernel log, at priority KERN_DEBUG. +# SPI default pin configuration code + +config S3C24XX_SPI_BUS0_GPE11_GPE12_GPE13 + bool + help + SPI GPIO configuration code for BUS0 when connected to + GPE11, GPE12 and GPE13. + +config S3C24XX_SPI_BUS1_GPG5_GPG6_GPG7 + bool + help + SPI GPIO configuration code for BUS 1 when connected to + GPG5, GPG6 and GPG7. + +# common code for s3c24xx based machines, such as the SMDKs. + config MACH_SMDK bool help diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile index d82767b..6b57401 100644 --- a/arch/arm/plat-s3c24xx/Makefile +++ b/arch/arm/plat-s3c24xx/Makefile @@ -31,4 +31,12 @@ obj-$(CONFIG_PM) += pm.o obj-$(CONFIG_PM) += sleep.o obj-$(CONFIG_HAVE_PWM) += pwm.o obj-$(CONFIG_S3C2410_DMA) += dma.o + +# SPI gpio central GPIO functions + +obj-$(CONFIG_S3C24XX_SPI_BUS0_GPE11_GPE12_GPE13) += spi-bus0-gpe11_12_13.o +obj-$(CONFIG_S3C24XX_SPI_BUS1_GPG5_GPG6_GPG7) += spi-bus1-gpg5_6_7.o + +# machine common support + obj-$(CONFIG_MACH_SMDK) += common-smdk.o diff --git a/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c b/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c new file mode 100644 index 0000000..8b403cb --- /dev/null +++ b/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c @@ -0,0 +1,37 @@ +/* linux/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c + * + * Copyright (c) 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX SPI - gpio configuration for bus 0 on gpe11,12,13 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License. +*/ + +#include <linux/kernel.h> + +#include <mach/hardware.h> + +#include <mach/spi.h> +#include <mach/regs-gpio.h> + +void s3c24xx_spi_gpiocfg_bus0_gpe11_12_13(struct s3c2410_spi_info *spi, + int enable) +{ + if (enable) { + s3c2410_gpio_cfgpin(S3C2410_GPE13, S3C2410_GPE13_SPICLK0); + s3c2410_gpio_cfgpin(S3C2410_GPE12, S3C2410_GPE12_SPIMOSI0); + s3c2410_gpio_cfgpin(S3C2410_GPE11, S3C2410_GPE11_SPIMISO0); + s3c2410_gpio_pullup(S3C2410_GPE11, 0); + s3c2410_gpio_pullup(S3C2410_GPE13, 0); + } else { + s3c2410_gpio_cfgpin(S3C2410_GPE13, S3C2410_GPIO_INPUT); + s3c2410_gpio_cfgpin(S3C2410_GPE11, S3C2410_GPIO_INPUT); + s3c2410_gpio_pullup(S3C2410_GPE11, 1); + s3c2410_gpio_pullup(S3C2410_GPE12, 1); + s3c2410_gpio_pullup(S3C2410_GPE13, 1); + } +} diff --git a/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c b/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c new file mode 100644 index 0000000..8fccd4e --- /dev/null +++ b/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c @@ -0,0 +1,37 @@ +/* linux/arch/arm/plat-s3c24xx/spi-bus0-gpg5_6_7.c + * + * Copyright (c) 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX SPI - gpio configuration for bus 1 on gpg5,6,7 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License. +*/ + +#include <linux/kernel.h> + +#include <mach/hardware.h> + +#include <mach/spi.h> +#include <mach/regs-gpio.h> + +void s3c24xx_spi_gpiocfg_bus1_gpg5_6_7(struct s3c2410_spi_info *spi, + int enable) +{ + if (enable) { + s3c2410_gpio_cfgpin(S3C2410_GPG7, S3C2410_GPG7_SPICLK1); + s3c2410_gpio_cfgpin(S3C2410_GPG6, S3C2410_GPG6_SPIMOSI1); + s3c2410_gpio_cfgpin(S3C2410_GPG5, S3C2410_GPG5_SPIMISO1); + s3c2410_gpio_pullup(S3C2410_GPG5, 0); + s3c2410_gpio_pullup(S3C2410_GPG6, 0); + } else { + s3c2410_gpio_cfgpin(S3C2410_GPG7, S3C2410_GPIO_INPUT); + s3c2410_gpio_cfgpin(S3C2410_GPG5, S3C2410_GPIO_INPUT); + s3c2410_gpio_pullup(S3C2410_GPG5, 1); + s3c2410_gpio_pullup(S3C2410_GPG6, 1); + s3c2410_gpio_pullup(S3C2410_GPG7, 1); + } +} |