1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Montage Technology M88DS3103/M88RS6000 demodulator driver
4  *
5  * Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
6  */
7 
8 #ifndef M88DS3103_H
9 #define M88DS3103_H
10 
11 #include <linux/dvb/frontend.h>
12 
13 /*
14  * I2C address
15  * 0x68,
16  */
17 
18 /**
19  * enum m88ds3103_ts_mode - TS connection mode
20  * @M88DS3103_TS_SERIAL:	TS output pin D0, normal
21  * @M88DS3103_TS_SERIAL_D7:	TS output pin D7
22  * @M88DS3103_TS_PARALLEL:	TS Parallel mode
23  * @M88DS3103_TS_CI:		TS CI Mode
24  */
25 enum m88ds3103_ts_mode {
26 	M88DS3103_TS_SERIAL,
27 	M88DS3103_TS_SERIAL_D7,
28 	M88DS3103_TS_PARALLEL,
29 	M88DS3103_TS_CI
30 };
31 
32 /**
33  * enum m88ds3103_clock_out
34  * @M88DS3103_CLOCK_OUT_DISABLED:	Clock output is disabled
35  * @M88DS3103_CLOCK_OUT_ENABLED:	Clock output is enabled with crystal
36  *					clock.
37  * @M88DS3103_CLOCK_OUT_ENABLED_DIV2:	Clock output is enabled with half
38  *					crystal clock.
39  */
40 enum m88ds3103_clock_out {
41 	M88DS3103_CLOCK_OUT_DISABLED,
42 	M88DS3103_CLOCK_OUT_ENABLED,
43 	M88DS3103_CLOCK_OUT_ENABLED_DIV2
44 };
45 
46 /**
47  * struct m88ds3103_platform_data - Platform data for the m88ds3103 driver
48  * @clk: Clock frequency.
49  * @i2c_wr_max: Max bytes I2C adapter can write at once.
50  * @ts_mode: TS mode.
51  * @ts_clk: TS clock (KHz).
52  * @ts_clk_pol: TS clk polarity. 1-active at falling edge; 0-active at rising
53  *  edge.
54  * @spec_inv: Input spectrum inversion.
55  * @agc: AGC configuration.
56  * @agc_inv: AGC polarity.
57  * @clk_out: Clock output.
58  * @envelope_mode: DiSEqC envelope mode.
59  * @lnb_hv_pol: LNB H/V pin polarity. 0: pin high set to VOLTAGE_18, pin low to
60  *  set VOLTAGE_13. 1: pin high set to VOLTAGE_13, pin low to set VOLTAGE_18.
61  * @lnb_en_pol: LNB enable pin polarity. 0: pin high to disable, pin low to
62  *  enable. 1: pin high to enable, pin low to disable.
63  * @get_dvb_frontend: Get DVB frontend.
64  * @get_i2c_adapter: Get I2C adapter.
65  */
66 struct m88ds3103_platform_data {
67 	u32 clk;
68 	u16 i2c_wr_max;
69 	enum m88ds3103_ts_mode ts_mode;
70 	u32 ts_clk;
71 	enum m88ds3103_clock_out clk_out;
72 	u8 ts_clk_pol:1;
73 	u8 spec_inv:1;
74 	u8 agc;
75 	u8 agc_inv:1;
76 	u8 envelope_mode:1;
77 	u8 lnb_hv_pol:1;
78 	u8 lnb_en_pol:1;
79 
80 	struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
81 	struct i2c_adapter* (*get_i2c_adapter)(struct i2c_client *);
82 
83 /* private: For legacy media attach wrapper. Do not set value. */
84 	u8 attach_in_use:1;
85 };
86 
87 /**
88  * struct m88ds3103_config - m88ds3102 configuration
89  *
90  * @i2c_addr:	I2C address. Default: none, must set. Example: 0x68, ...
91  * @clock:	Device's clock. Default: none, must set. Example: 27000000
92  * @i2c_wr_max: Max bytes I2C provider is asked to write at once.
93  *		Default: none, must set. Example: 33, 65, ...
94  * @ts_mode:	TS output mode, as defined by &enum m88ds3103_ts_mode.
95  *		Default: M88DS3103_TS_SERIAL.
96  * @ts_clk:	TS clk in KHz. Default: 0.
97  * @ts_clk_pol:	TS clk polarity.Default: 0.
98  *		1-active at falling edge; 0-active at rising edge.
99  * @spec_inv:	Spectrum inversion. Default: 0.
100  * @agc_inv:	AGC polarity. Default: 0.
101  * @clock_out:	Clock output, as defined by &enum m88ds3103_clock_out.
102  *		Default: M88DS3103_CLOCK_OUT_DISABLED.
103  * @envelope_mode: DiSEqC envelope mode. Default: 0.
104  * @agc:	AGC configuration. Default: none, must set.
105  * @lnb_hv_pol:	LNB H/V pin polarity. Default: 0. Values:
106  *		1: pin high set to VOLTAGE_13, pin low to set VOLTAGE_18;
107  *		0: pin high set to VOLTAGE_18, pin low to set VOLTAGE_13.
108  * @lnb_en_pol:	LNB enable pin polarity. Default: 0. Values:
109  *		1: pin high to enable, pin low to disable;
110  *		0: pin high to disable, pin low to enable.
111  */
112 struct m88ds3103_config {
113 	u8 i2c_addr;
114 	u32 clock;
115 	u16 i2c_wr_max;
116 	u8 ts_mode;
117 	u32 ts_clk;
118 	u8 ts_clk_pol:1;
119 	u8 spec_inv:1;
120 	u8 agc_inv:1;
121 	u8 clock_out;
122 	u8 envelope_mode:1;
123 	u8 agc;
124 	u8 lnb_hv_pol:1;
125 	u8 lnb_en_pol:1;
126 };
127 
128 #if defined(CONFIG_DVB_M88DS3103) || \
129 		(defined(CONFIG_DVB_M88DS3103_MODULE) && defined(MODULE))
130 /**
131  * m88ds3103_attach - Attach a m88ds3103 demod
132  *
133  * @config: pointer to &struct m88ds3103_config with demod configuration.
134  * @i2c: i2c adapter to use.
135  * @tuner_i2c: on success, returns the I2C adapter associated with
136  *		m88ds3103 tuner.
137  *
138  * return: FE pointer on success, NULL on failure.
139  * Note: Do not add new m88ds3103_attach() users! Use I2C bindings instead.
140  */
141 extern struct dvb_frontend *m88ds3103_attach(
142 		const struct m88ds3103_config *config,
143 		struct i2c_adapter *i2c,
144 		struct i2c_adapter **tuner_i2c);
145 extern int m88ds3103_get_agc_pwm(struct dvb_frontend *fe, u8 *_agc_pwm);
146 #else
m88ds3103_attach(const struct m88ds3103_config * config,struct i2c_adapter * i2c,struct i2c_adapter ** tuner_i2c)147 static inline struct dvb_frontend *m88ds3103_attach(
148 		const struct m88ds3103_config *config,
149 		struct i2c_adapter *i2c,
150 		struct i2c_adapter **tuner_i2c)
151 {
152 	pr_warn("%s: driver disabled by Kconfig\n", __func__);
153 	return NULL;
154 }
155 #define m88ds3103_get_agc_pwm NULL
156 #endif
157 
158 #endif
159