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 <[EMAIL PROTECTED]>
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 <[EMAIL PROTECTED]>
+ *
+ * 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);
+ }
+}
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 <[EMAIL PROTECTED]>
+ *
+ * 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);
+ }
+}
--
Ben ([EMAIL PROTECTED], http://www.fluff.org/)
'a smiley only costs 4 bytes'
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