1 #include <linux/module.h>
2 #include <linux/init.h>
4 #include <linux/i2c-algo-bit.h>
5 #include <linux/i2c-gpio.h>
6 #include <linux/platform_device.h>
7 #include <plat/gpio-nomadik.h>
8 #include <plat/pincfg.h>
11 * There are two busses in the 8815NHK.
12 * They could, in theory, be driven by the hardware component, but we
13 * use bit-bang through GPIO by now, to keep things simple
16 /* I2C0 connected to the STw4811 power management chip */
17 static struct i2c_gpio_platform_data nhk8815_i2c_data0 = {
18 /* keep defaults for timeouts; pins are push-pull bidirectional */
23 /* I2C1 connected to various sensors */
24 static struct i2c_gpio_platform_data nhk8815_i2c_data1 = {
25 /* keep defaults for timeouts; pins are push-pull bidirectional */
30 /* I2C2 connected to the USB portions of the STw4811 only */
31 static struct i2c_gpio_platform_data nhk8815_i2c_data2 = {
32 /* keep defaults for timeouts; pins are push-pull bidirectional */
37 static struct platform_device nhk8815_i2c_dev0 = {
41 .platform_data = &nhk8815_i2c_data0,
45 static struct platform_device nhk8815_i2c_dev1 = {
49 .platform_data = &nhk8815_i2c_data1,
53 static struct platform_device nhk8815_i2c_dev2 = {
57 .platform_data = &nhk8815_i2c_data2,
61 static pin_cfg_t cpu8815_pins_i2c[] = {
62 PIN_CFG_INPUT(62, GPIO, PULLUP),
63 PIN_CFG_INPUT(63, GPIO, PULLUP),
64 PIN_CFG_INPUT(53, GPIO, PULLUP),
65 PIN_CFG_INPUT(54, GPIO, PULLUP),
66 PIN_CFG_INPUT(73, GPIO, PULLUP),
67 PIN_CFG_INPUT(74, GPIO, PULLUP),
70 static int __init nhk8815_i2c_init(void)
72 nmk_config_pins(cpu8815_pins_i2c, ARRAY_SIZE(cpu8815_pins_i2c));
73 platform_device_register(&nhk8815_i2c_dev0);
74 platform_device_register(&nhk8815_i2c_dev1);
75 platform_device_register(&nhk8815_i2c_dev2);
80 static void __exit nhk8815_i2c_exit(void)
82 platform_device_unregister(&nhk8815_i2c_dev0);
83 platform_device_unregister(&nhk8815_i2c_dev1);
84 platform_device_unregister(&nhk8815_i2c_dev2);
88 module_init(nhk8815_i2c_init);
89 module_exit(nhk8815_i2c_exit);