1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright 2004-2009 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * S3C - I2C Controller platform_device info
7 */
8
9 #ifndef __I2C_S3C2410_H
10 #define __I2C_S3C2410_H __FILE__
11
12 #define S3C_IICFLG_FILTER (1<<0) /* enable s3c2440 filter */
13
14 struct platform_device;
15
16 /**
17 * struct s3c2410_platform_i2c - Platform data for s3c I2C.
18 * @bus_num: The bus number to use (if possible).
19 * @flags: Any flags for the I2C bus (E.g. S3C_IICFLK_FILTER).
20 * @slave_addr: The I2C address for the slave device (if enabled).
21 * @frequency: The desired frequency in Hz of the bus. This is
22 * guaranteed to not be exceeded. If the caller does
23 * not care, use zero and the driver will select a
24 * useful default.
25 * @sda_delay: The delay (in ns) applied to SDA edges.
26 * @cfg_gpio: A callback to configure the pins for I2C operation.
27 */
28 struct s3c2410_platform_i2c {
29 int bus_num;
30 unsigned int flags;
31 unsigned int slave_addr;
32 unsigned long frequency;
33 unsigned int sda_delay;
34
35 void (*cfg_gpio)(struct platform_device *dev);
36 };
37
38 /**
39 * s3c_i2c0_set_platdata - set platform data for i2c0 device
40 * @i2c: The platform data to set, or NULL for default data.
41 *
42 * Register the given platform data for use with the i2c0 device. This
43 * call copies the platform data, so the caller can use __initdata for
44 * their copy.
45 *
46 * This call will set cfg_gpio if is null to the default platform
47 * implementation.
48 *
49 * Any user of s3c_device_i2c0 should call this, even if it is with
50 * NULL to ensure that the device is given the default platform data
51 * as the driver will no longer carry defaults.
52 */
53 extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c);
54 extern void s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *i2c);
55 extern void s3c_i2c2_set_platdata(struct s3c2410_platform_i2c *i2c);
56 extern void s3c_i2c3_set_platdata(struct s3c2410_platform_i2c *i2c);
57 extern void s3c_i2c4_set_platdata(struct s3c2410_platform_i2c *i2c);
58 extern void s3c_i2c5_set_platdata(struct s3c2410_platform_i2c *i2c);
59 extern void s3c_i2c6_set_platdata(struct s3c2410_platform_i2c *i2c);
60 extern void s3c_i2c7_set_platdata(struct s3c2410_platform_i2c *i2c);
61 extern void s5p_i2c_hdmiphy_set_platdata(struct s3c2410_platform_i2c *i2c);
62
63 /* defined by architecture to configure gpio */
64 extern void s3c_i2c0_cfg_gpio(struct platform_device *dev);
65 extern void s3c_i2c1_cfg_gpio(struct platform_device *dev);
66 extern void s3c_i2c2_cfg_gpio(struct platform_device *dev);
67 extern void s3c_i2c3_cfg_gpio(struct platform_device *dev);
68 extern void s3c_i2c4_cfg_gpio(struct platform_device *dev);
69 extern void s3c_i2c5_cfg_gpio(struct platform_device *dev);
70 extern void s3c_i2c6_cfg_gpio(struct platform_device *dev);
71 extern void s3c_i2c7_cfg_gpio(struct platform_device *dev);
72
73 extern struct s3c2410_platform_i2c default_i2c_data;
74
75 #endif /* __I2C_S3C2410_H */