1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * Sony CXD2820R demodulator driver |
4 | * |
5 | * Copyright (C) 2010 Antti Palosaari <crope@iki.fi> |
6 | */ |
7 | |
8 | |
9 | #ifndef CXD2820R_H |
10 | #define CXD2820R_H |
11 | |
12 | #include <linux/dvb/frontend.h> |
13 | |
14 | #define CXD2820R_GPIO_D (0 << 0) /* disable */ |
15 | #define CXD2820R_GPIO_E (1 << 0) /* enable */ |
16 | #define CXD2820R_GPIO_O (0 << 1) /* output */ |
17 | #define CXD2820R_GPIO_I (1 << 1) /* input */ |
18 | #define CXD2820R_GPIO_L (0 << 2) /* output low */ |
19 | #define CXD2820R_GPIO_H (1 << 2) /* output high */ |
20 | |
21 | #define CXD2820R_TS_SERIAL 0x08 |
22 | #define CXD2820R_TS_SERIAL_MSB 0x28 |
23 | #define CXD2820R_TS_PARALLEL 0x30 |
24 | #define CXD2820R_TS_PARALLEL_MSB 0x70 |
25 | |
26 | /* |
27 | * I2C address: 0x6c, 0x6d |
28 | */ |
29 | |
30 | /** |
31 | * struct cxd2820r_platform_data - Platform data for the cxd2820r driver |
32 | * @ts_mode: TS mode. |
33 | * @ts_clk_inv: TS clock inverted. |
34 | * @if_agc_polarity: IF AGC polarity. |
35 | * @spec_inv: Input spectrum inverted. |
36 | * @gpio_chip_base: GPIO. |
37 | * @get_dvb_frontend: Get DVB frontend. |
38 | */ |
39 | struct cxd2820r_platform_data { |
40 | u8 ts_mode; |
41 | bool ts_clk_inv; |
42 | bool if_agc_polarity; |
43 | bool spec_inv; |
44 | int **gpio_chip_base; |
45 | |
46 | struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *); |
47 | /* private: For legacy media attach wrapper. Do not set value. */ |
48 | bool attach_in_use; |
49 | }; |
50 | |
51 | /** |
52 | * struct cxd2820r_config - configuration for cxd2020r demod |
53 | * |
54 | * @i2c_address: Demodulator I2C address. Driver determines DVB-C slave I2C |
55 | * address automatically from master address. |
56 | * Default: none, must set. Values: 0x6c, 0x6d. |
57 | * @ts_mode: TS output mode. Default: none, must set. Values: FIXME? |
58 | * @ts_clock_inv: TS clock inverted. Default: 0. Values: 0, 1. |
59 | * @if_agc_polarity: Default: 0. Values: 0, 1 |
60 | * @spec_inv: Spectrum inversion. Default: 0. Values: 0, 1. |
61 | */ |
62 | struct cxd2820r_config { |
63 | /* Demodulator I2C address. |
64 | * Driver determines DVB-C slave I2C address automatically from master |
65 | * address. |
66 | * Default: none, must set |
67 | * Values: 0x6c, 0x6d |
68 | */ |
69 | u8 i2c_address; |
70 | |
71 | /* TS output mode. |
72 | * Default: none, must set. |
73 | * Values: |
74 | */ |
75 | u8 ts_mode; |
76 | |
77 | /* TS clock inverted. |
78 | * Default: 0 |
79 | * Values: 0, 1 |
80 | */ |
81 | bool ts_clock_inv; |
82 | |
83 | /* IF AGC polarity. |
84 | * Default: 0 |
85 | * Values: 0, 1 |
86 | */ |
87 | bool if_agc_polarity; |
88 | |
89 | /* Spectrum inversion. |
90 | * Default: 0 |
91 | * Values: 0, 1 |
92 | */ |
93 | bool spec_inv; |
94 | }; |
95 | |
96 | |
97 | #if IS_REACHABLE(CONFIG_DVB_CXD2820R) |
98 | /** |
99 | * cxd2820r_attach - Attach a cxd2820r demod |
100 | * |
101 | * @config: pointer to &struct cxd2820r_config with demod configuration. |
102 | * @i2c: i2c adapter to use. |
103 | * @gpio_chip_base: if zero, disables GPIO setting. Otherwise, if |
104 | * CONFIG_GPIOLIB is set dynamically allocate |
105 | * gpio base; if is not set, use its value to |
106 | * setup the GPIO pins. |
107 | * |
108 | * return: FE pointer on success, NULL on failure. |
109 | */ |
110 | extern struct dvb_frontend *cxd2820r_attach( |
111 | const struct cxd2820r_config *config, |
112 | struct i2c_adapter *i2c, |
113 | int *gpio_chip_base |
114 | ); |
115 | #else |
116 | static inline struct dvb_frontend *cxd2820r_attach( |
117 | const struct cxd2820r_config *config, |
118 | struct i2c_adapter *i2c, |
119 | int *gpio_chip_base |
120 | ) |
121 | { |
122 | printk(KERN_WARNING "%s: driver disabled by Kconfig\n" , __func__); |
123 | return NULL; |
124 | } |
125 | |
126 | #endif |
127 | |
128 | #endif /* CXD2820R_H */ |
129 | |