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#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/i2c-gpio.h>
#include <linux/platform_device.h>
#include <linux/platform_data/pinctrl-nomadik.h>
/*
* There are two busses in the 8815NHK.
* They could, in theory, be driven by the hardware component, but we
* use bit-bang through GPIO by now, to keep things simple
*/
/* I2C0 connected to the STw4811 power management chip */
static struct i2c_gpio_platform_data nhk8815_i2c_data0 = {
/* keep defaults for timeouts; pins are push-pull bidirectional */
.scl_pin = 62,
.sda_pin = 63,
};
/* I2C1 connected to various sensors */
static struct i2c_gpio_platform_data nhk8815_i2c_data1 = {
/* keep defaults for timeouts; pins are push-pull bidirectional */
.scl_pin = 53,
.sda_pin = 54,
};
/* I2C2 connected to the USB portions of the STw4811 only */
static struct i2c_gpio_platform_data nhk8815_i2c_data2 = {
/* keep defaults for timeouts; pins are push-pull bidirectional */
.scl_pin = 73,
.sda_pin = 74,
};
static struct platform_device nhk8815_i2c_dev0 = {
.name = "i2c-gpio",
.id = 0,
.dev = {
.platform_data = &nhk8815_i2c_data0,
},
};
static struct platform_device nhk8815_i2c_dev1 = {
.name = "i2c-gpio",
.id = 1,
.dev = {
.platform_data = &nhk8815_i2c_data1,
},
};
static struct platform_device nhk8815_i2c_dev2 = {
.name = "i2c-gpio",
.id = 2,
.dev = {
.platform_data = &nhk8815_i2c_data2,
},
};
static pin_cfg_t cpu8815_pins_i2c[] = {
PIN_CFG_INPUT(62, GPIO, PULLUP),
PIN_CFG_INPUT(63, GPIO, PULLUP),
PIN_CFG_INPUT(53, GPIO, PULLUP),
PIN_CFG_INPUT(54, GPIO, PULLUP),
PIN_CFG_INPUT(73, GPIO, PULLUP),
PIN_CFG_INPUT(74, GPIO, PULLUP),
};
static int __init nhk8815_i2c_init(void)
{
nmk_config_pins(cpu8815_pins_i2c, ARRAY_SIZE(cpu8815_pins_i2c));
platform_device_register(&nhk8815_i2c_dev0);
platform_device_register(&nhk8815_i2c_dev1);
platform_device_register(&nhk8815_i2c_dev2);
return 0;
}
static void __exit nhk8815_i2c_exit(void)
{
platform_device_unregister(&nhk8815_i2c_dev0);
platform_device_unregister(&nhk8815_i2c_dev1);
platform_device_unregister(&nhk8815_i2c_dev2);
return;
}
module_init(nhk8815_i2c_init);
module_exit(nhk8815_i2c_exit);
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