[RFC PATCH] ARM: S5PC210: I2C3 support
Kyungmin Park
kmpark at infradead.org
Fri Aug 6 04:21:49 EDT 2010
S5PC210 has total 8 I2C devices. It's not easy to use existing i2c device
framework since it's designed for the 3 I2Cs at previous samsung socs.
To support 3/4/5/6/7 I2Cs. I created the dev-i2c{3..7} at mach-s5pv310 directory since it's only valid in this cpu.
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
diff --git a/arch/arm/mach-s5pv310/Kconfig b/arch/arm/mach-s5pv310/Kconfig
index faa3436..626e079 100644
--- a/arch/arm/mach-s5pv310/Kconfig
+++ b/arch/arm/mach-s5pv310/Kconfig
@@ -25,6 +25,11 @@ config S5PV310_SETUP_I2C2
help
Common setup code for i2c bus 2.
+config S5PV310_SETUP_I2C3
+ bool
+ help
+ Common setup code for i2c bus 3.
+
# machine support
config MACH_SMDKV310
diff --git a/arch/arm/mach-s5pv310/Makefile b/arch/arm/mach-s5pv310/Makefile
index de49e98..485af8f 100644
--- a/arch/arm/mach-s5pv310/Makefile
+++ b/arch/arm/mach-s5pv310/Makefile
@@ -28,3 +28,4 @@ obj-$(CONFIG_MACH_UNIVERSAL) += mach-universal.o
obj-$(CONFIG_S5PV310_SETUP_I2C1) += setup-i2c1.o
obj-$(CONFIG_S5PV310_SETUP_I2C2) += setup-i2c2.o
+obj-$(CONFIG_S5PV310_SETUP_I2C3) += dev-i2c3.o
diff --git a/arch/arm/mach-s5pv310/dev-i2c3.c b/arch/arm/mach-s5pv310/dev-i2c3.c
new file mode 100644
index 0000000..6b03f50
--- /dev/null
+++ b/arch/arm/mach-s5pv310/dev-i2c3.c
@@ -0,0 +1,64 @@
+/*
+ * linux/arch/arm/plat-s5p/dev-i2c3.c
+ *
+ * Copyright (C) 2010 Samsung Electronics
+ *
+ * S5PC210 series device definition for i2c device 3
+ *
+ * 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 <linux/gpio.h>
+
+#include <mach/irqs.h>
+#include <mach/map.h>
+
+#include <plat/regs-iic.h>
+#include <plat/iic.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+#include <plat/gpio-cfg.h>
+
+static struct resource s5pc210_i2c_resource[] = {
+ [0] = {
+ .start = S5PV310_PA_I2C3,
+ .end = S5PV310_PA_I2C3 + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_I2C3,
+ .end = IRQ_I2C3,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static void s5pc210_i2c3_cfg_gpio(struct platform_device *dev)
+{
+ s3c_gpio_cfgpin(S5PV310_GPA1(2), S3C_GPIO_SFN(3));
+ s3c_gpio_setpull(S5PV310_GPA1(2), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(S5PV310_GPA1(3), S3C_GPIO_SFN(3));
+ s3c_gpio_setpull(S5PV310_GPA1(3), S3C_GPIO_PULL_UP);
+}
+
+static struct s3c2410_platform_i2c default_i2c_data3 = {
+ .bus_num = 3,
+ .slave_addr = 0x10,
+ .frequency = 400 * 1000,
+ .sda_delay = 100,
+ .cfg_gpio = s5pc210_i2c3_cfg_gpio,
+};
+
+struct platform_device s5p_device_i2c3 = {
+ .name = "s3c2440-i2c",
+ .id = 3,
+ .dev = {
+ .platform_data = &default_i2c_data3,
+ },
+ .num_resources = ARRAY_SIZE(s5pc210_i2c_resource),
+ .resource = s5pc210_i2c_resource,
+};
diff --git a/arch/arm/mach-s5pv310/include/mach/irqs.h b/arch/arm/mach-s5pv310/include/mach/irqs.h
index 56885ca..a718667 100644
--- a/arch/arm/mach-s5pv310/include/mach/irqs.h
+++ b/arch/arm/mach-s5pv310/include/mach/irqs.h
@@ -64,6 +64,13 @@
#define IRQ_UART3 COMBINER_IRQ(26, 3)
#define IRQ_UART4 COMBINER_IRQ(26, 4)
+#define IRQ_I2C7 COMBINER_IRQ(27, 7)
+#define IRQ_I2C6 COMBINER_IRQ(27, 6)
+#define IRQ_I2C5 COMBINER_IRQ(27, 5)
+#define IRQ_I2C4 COMBINER_IRQ(27, 4)
+#define IRQ_I2C3 COMBINER_IRQ(27, 3)
+#define IRQ_IIC2 COMBINER_IRQ(27, 2)
+#define IRQ_IIC1 COMBINER_IRQ(27, 1)
#define IRQ_IIC COMBINER_IRQ(27, 0)
/* Set the default NR_IRQS */
diff --git a/arch/arm/mach-s5pv310/include/mach/map.h b/arch/arm/mach-s5pv310/include/mach/map.h
index 7eb2a7a..0c34a6e 100644
--- a/arch/arm/mach-s5pv310/include/mach/map.h
+++ b/arch/arm/mach-s5pv310/include/mach/map.h
@@ -55,7 +55,16 @@
#define S5P_SZ_UART SZ_256
-#define S5PV310_PA_IIC0 (0x13860000)
+#define S5PV310_PA_I2C (0x13860000)
+#define S5P_PA_I2C(x) (S5PV310_PA_I2C + ((x) * 0x10000))
+#define S5PV310_PA_I2C0 S5P_PA_I2C(0)
+#define S5PV310_PA_I2C1 S5P_PA_I2C(1)
+#define S5PV310_PA_I2C2 S5P_PA_I2C(2)
+#define S5PV310_PA_I2C3 S5P_PA_I2C(3)
+#define S5PV310_PA_I2C4 S5P_PA_I2C(4)
+#define S5PV310_PA_I2C5 S5P_PA_I2C(5)
+#define S5PV310_PA_I2C6 S5P_PA_I2C(6)
+#define S5PV310_PA_I2C7 S5P_PA_I2C(7)
#define S5PV310_PA_TIMER (0x139D0000)
#define S5P_PA_TIMER S5PV310_PA_TIMER
@@ -65,7 +74,7 @@
/* compatibiltiy defines. */
#define S3C_PA_UART S5PV310_PA_UART
-#define S3C_PA_IIC S5PV310_PA_IIC0
+#define S3C_PA_IIC S5PV310_PA_I2C0
#define S3C_PA_WDT S5PV310_PA_WATCHDOG
#endif /* __ASM_ARCH_MAP_H */
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index 4c31d32..0b49cce 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -46,6 +46,7 @@ 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_i2c2;
+extern struct platform_device s5p_device_i2c3;
extern struct platform_device s3c_device_rtc;
extern struct platform_device s3c_device_adc;
extern struct platform_device s3c_device_sdi;
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