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| author | Komal Shah <komal_shah802003@yahoo.com> | 2008-09-07 23:41:28 -0700 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2008-09-17 00:31:42 -0700 |
| commit | d395e6ad98912b52a299999ab667de9a1f393c91 (patch) | |
| tree | 1ce5767c12884c6326f702d9eeac998c0af4864c /arch | |
| parent | dce1115bc32d66237102a4c925e1e0a5e82b9945 (diff) | |
| download | lwn-d395e6ad98912b52a299999ab667de9a1f393c91.tar.gz lwn-d395e6ad98912b52a299999ab667de9a1f393c91.zip | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-davinci/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/devices.c | 48 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/include/mach/i2c.h | 7 |
3 files changed, 54 insertions, 3 deletions
diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile index 99ac2e55774d..bddfbb717064 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 000000000000..3d4b1de8f898 --- /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 e2f54168abd1..c248e9b7e825 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 */ |