ARM: DaVinci: i2c setup
Davinci I2C initialization infrastructure; will be used by EVM init.
[ dbrownell@users.sourceforge.net: pass platform data into init code ]
Signed-off-by: Komal Shah <komal_shah802003@yahoo.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile
index 99ac2e5..bddfbb7 100644
--- a/arch/arm/mach-davinci/Makefile
+++ b/arch/arm/mach-davinci/Makefile
@@ -5,7 +5,7 @@
# Common objects
obj-y := time.o irq.o clock.o serial.o io.o id.o psc.o \
- gpio.o mux.o
+ gpio.o mux.o devices.o
# Board specific
obj-$(CONFIG_MACH_DAVINCI_EVM) += board-evm.o
diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c
new file mode 100644
index 0000000..3d4b1de
--- /dev/null
+++ b/arch/arm/mach-davinci/devices.c
@@ -0,0 +1,48 @@
+/*
+ * mach-davinci/devices.c
+ *
+ * DaVinci platform device setup/initialization
+ *
+ * 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, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+
+#include <asm/mach/map.h>
+
+#include <mach/hardware.h>
+#include <mach/i2c.h>
+
+static struct resource i2c_resources[] = {
+ {
+ .start = DAVINCI_I2C_BASE,
+ .end = DAVINCI_I2C_BASE + 0x40,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_I2C,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device davinci_i2c_device = {
+ .name = "i2c_davinci",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(i2c_resources),
+ .resource = i2c_resources,
+};
+
+void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
+{
+ davinci_i2c_device.dev.platform_data = pdata;
+ (void) platform_device_register(&davinci_i2c_device);
+}
+
diff --git a/arch/arm/mach-davinci/include/mach/i2c.h b/arch/arm/mach-davinci/include/mach/i2c.h
index e2f5416..c248e9b 100644
--- a/arch/arm/mach-davinci/include/mach/i2c.h
+++ b/arch/arm/mach-davinci/include/mach/i2c.h
@@ -14,8 +14,11 @@
/* All frequencies are expressed in kHz */
struct davinci_i2c_platform_data {
- unsigned int bus_freq; /* standard bus frequency */
- unsigned int bus_delay; /* transaction delay */
+ unsigned int bus_freq; /* standard bus frequency (kHz) */
+ unsigned int bus_delay; /* post-transaction delay (usec) */
};
+/* for board setup code */
+void davinci_init_i2c(struct davinci_i2c_platform_data *);
+
#endif /* __ASM_ARCH_I2C_H */
