From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Dooks Subject: [patch 1/9] S3C24XX: Default SPI pin configuration for SPI Date: Fri, 10 Oct 2008 11:03:45 +0100 Message-ID: <20081010100404.402586503@fluff.org.uk> References: <20081010100344.572052114@fluff.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org, Ben Dooks To: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Return-path: Content-Disposition: inline; filename=simtec/simtec-s3c24xx-spi-default-gpios.patch 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 Add a set of default pin configuration routines for setting up the SPI gpio configuration when using the hardware SPI driver. Signed-off-by: Ben Dooks Index: linux-2.6.27-rc6-quilt4/arch/arm/plat-s3c24xx/Kconfig =================================================================== --- linux-2.6.27-rc6-quilt4.orig/arch/arm/plat-s3c24xx/Kconfig 2008-09-16 11:57:16.000000000 +0100 +++ linux-2.6.27-rc6-quilt4/arch/arm/plat-s3c24xx/Kconfig 2008-09-16 12:28:19.000000000 +0100 @@ -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 Index: linux-2.6.27-rc6-quilt4/arch/arm/plat-s3c24xx/Makefile =================================================================== --- linux-2.6.27-rc6-quilt4.orig/arch/arm/plat-s3c24xx/Makefile 2008-09-16 11:57:16.000000000 +0100 +++ linux-2.6.27-rc6-quilt4/arch/arm/plat-s3c24xx/Makefile 2008-09-16 12:29:00.000000000 +0100 @@ -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 Index: linux-2.6.27-rc6-quilt4/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ linux-2.6.27-rc6-quilt4/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c 2008-09-16 12:27:15.000000000 +0100 @@ -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 + * + * 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 + +#include + +#include +#include + +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); + } +} Index: linux-2.6.27-rc6-quilt4/arch/arm/mach-s3c2410/include/mach/spi.h =================================================================== --- linux-2.6.27-rc6-quilt4.orig/arch/arm/mach-s3c2410/include/mach/spi.h 2008-09-16 12:27:07.000000000 +0100 +++ linux-2.6.27-rc6-quilt4/arch/arm/mach-s3c2410/include/mach/spi.h 2008-09-16 12:27:15.000000000 +0100 @@ -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 */ Index: linux-2.6.27-rc6-quilt4/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ linux-2.6.27-rc6-quilt4/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c 2008-09-16 12:27:15.000000000 +0100 @@ -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 + * + * 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 + +#include + +#include +#include + +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); + } +} -- Ben (ben-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org, http://www.fluff.org/) 'a smiley only costs 4 bytes' ------------------------------------------------------------------------- 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=/