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authorBen Dooks <ben-linux@fluff.org>2008-10-31 16:14:55 +0000
committerBen Dooks <ben-linux@fluff.org>2008-12-15 23:56:41 +0000
commit1aba834da12989bb769d1dcbf6b0ea29f730c92c (patch)
tree4f06c055eb265919ab137a49a21d3a5ace5d393d /arch/arm/plat-s3c
parent8f995cc3ac94b114fe84782b023d8706d1adf960 (diff)
downloadop-kernel-dev-1aba834da12989bb769d1dcbf6b0ea29f730c92c.zip
op-kernel-dev-1aba834da12989bb769d1dcbf6b0ea29f730c92c.tar.gz
[ARM] S3C: Add i2c1 device definition
Add device definition and support functions for the second i2c device (i2c1). If this is selected, the first i2c bus will become index 0 instead of index -1. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/plat-s3c')
-rw-r--r--arch/arm/plat-s3c/Kconfig6
-rw-r--r--arch/arm/plat-s3c/Makefile1
-rw-r--r--arch/arm/plat-s3c/dev-i2c0.c8
-rw-r--r--arch/arm/plat-s3c/dev-i2c1.c68
-rw-r--r--arch/arm/plat-s3c/include/plat/devs.h1
-rw-r--r--arch/arm/plat-s3c/include/plat/iic.h2
6 files changed, 84 insertions, 2 deletions
diff --git a/arch/arm/plat-s3c/Kconfig b/arch/arm/plat-s3c/Kconfig
index e6e6496..d7a6e48 100644
--- a/arch/arm/plat-s3c/Kconfig
+++ b/arch/arm/plat-s3c/Kconfig
@@ -160,3 +160,9 @@ config S3C_DEV_HSMMC1
depends on PLAT_S3C
help
Compile in platform device definitions for HSMMC channel 1
+
+config S3C_DEV_I2C1
+ bool
+ depends on PLAT_S3C
+ help
+ Compile in platform device definitions for I2C channel 1
diff --git a/arch/arm/plat-s3c/Makefile b/arch/arm/plat-s3c/Makefile
index 187fa95..3fcee0c 100644
--- a/arch/arm/plat-s3c/Makefile
+++ b/arch/arm/plat-s3c/Makefile
@@ -23,3 +23,4 @@ obj-y += gpio-config.o
obj-$(CONFIG_S3C_DEV_HSMMC) += dev-hsmmc.o
obj-$(CONFIG_S3C_DEV_HSMMC1) += dev-hsmmc1.o
obj-y += dev-i2c0.o
+obj-$(CONFIG_S3C_DEV_I2C1) += dev-i2c1.o
diff --git a/arch/arm/plat-s3c/dev-i2c0.c b/arch/arm/plat-s3c/dev-i2c0.c
index 21870fd..2c0128c 100644
--- a/arch/arm/plat-s3c/dev-i2c0.c
+++ b/arch/arm/plat-s3c/dev-i2c0.c
@@ -37,12 +37,16 @@ static struct resource s3c_i2c_resource[] = {
struct platform_device s3c_device_i2c0 = {
.name = "s3c2410-i2c",
+#ifdef CONFIG_S3C_DEV_I2C1
+ .id = 0,
+#else
.id = -1,
+#endif
.num_resources = ARRAY_SIZE(s3c_i2c_resource),
.resource = s3c_i2c_resource,
};
-struct s3c2410_platform_i2c default_i2c_data __initdata = {
+static struct s3c2410_platform_i2c default_i2c_data0 __initdata = {
.flags = 0,
.slave_addr = 0x10,
.bus_freq = 100*1000,
@@ -55,7 +59,7 @@ void __init s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *pd)
struct s3c2410_platform_i2c *npd;
if (!pd)
- pd = &default_i2c_data;
+ pd = &default_i2c_data0;
npd = kmemdup(pd, sizeof(struct s3c2410_platform_i2c), GFP_KERNEL);
if (!npd)
diff --git a/arch/arm/plat-s3c/dev-i2c1.c b/arch/arm/plat-s3c/dev-i2c1.c
new file mode 100644
index 0000000..9658fb0
--- /dev/null
+++ b/arch/arm/plat-s3c/dev-i2c1.c
@@ -0,0 +1,68 @@
+/* linux/arch/arm/plat-s3c/dev-i2c1.c
+ *
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * S3C series device definition for i2c device 1
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+
+#include <mach/map.h>
+
+#include <plat/regs-iic.h>
+#include <plat/iic.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+
+static struct resource s3c_i2c_resource[] = {
+ [0] = {
+ .start = S3C_PA_IIC1,
+ .end = S3C_PA_IIC1 + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_IIC1,
+ .end = IRQ_IIC1,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device s3c_device_i2c1 = {
+ .name = "s3c2410-i2c",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(s3c_i2c_resource),
+ .resource = s3c_i2c_resource,
+};
+
+static struct s3c2410_platform_i2c default_i2c_data1 __initdata = {
+ .flags = 0,
+ .bus_num = 1,
+ .slave_addr = 0x10,
+ .bus_freq = 100*1000,
+ .max_freq = 400*1000,
+ .sda_delay = S3C2410_IICLC_SDA_DELAY5 | S3C2410_IICLC_FILTER_ON,
+};
+
+void __init s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *pd)
+{
+ struct s3c2410_platform_i2c *npd;
+
+ if (!pd)
+ pd = &default_i2c_data1;
+
+ npd = kmemdup(pd, sizeof(struct s3c2410_platform_i2c), GFP_KERNEL);
+ if (!npd)
+ printk(KERN_ERR "%s: no memory for platform data\n", __func__);
+ else if (!npd->cfg_gpio)
+ npd->cfg_gpio = s3c_i2c1_cfg_gpio;
+
+ s3c_device_i2c1.dev.platform_data = npd;
+}
diff --git a/arch/arm/plat-s3c/include/plat/devs.h b/arch/arm/plat-s3c/include/plat/devs.h
index d9e0c54..0e342d1 100644
--- a/arch/arm/plat-s3c/include/plat/devs.h
+++ b/arch/arm/plat-s3c/include/plat/devs.h
@@ -28,6 +28,7 @@ extern struct platform_device s3c_device_usb;
extern struct platform_device s3c_device_lcd;
extern struct platform_device s3c_device_wdt;
extern struct platform_device s3c_device_i2c0;
+extern struct platform_device s3c_device_i2c1;
extern struct platform_device s3c_device_iis;
extern struct platform_device s3c_device_rtc;
extern struct platform_device s3c_device_adc;
diff --git a/arch/arm/plat-s3c/include/plat/iic.h b/arch/arm/plat-s3c/include/plat/iic.h
index 5073b1e..dc1dfcb 100644
--- a/arch/arm/plat-s3c/include/plat/iic.h
+++ b/arch/arm/plat-s3c/include/plat/iic.h
@@ -48,8 +48,10 @@ struct s3c2410_platform_i2c {
* as the driver will no longer carry defaults.
*/
extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c);
+extern void s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *i2c);
/* defined by architecture to configure gpio */
extern void s3c_i2c0_cfg_gpio(struct platform_device *dev);
+extern void s3c_i2c1_cfg_gpio(struct platform_device *dev);
#endif /* __ASM_ARCH_IIC_H */
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