1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  *  c8sectpfe-dvb.c - C8SECTPFE STi DVB driver
4  *
5  * Copyright (c) STMicroelectronics 2015
6  *
7  *  Author Peter Griffin <peter.griffin@linaro.org>
8  *
9  */
10 #include <linux/completion.h>
11 #include <linux/delay.h>
12 #include <linux/i2c.h>
13 #include <linux/interrupt.h>
14 
15 #include <dt-bindings/media/c8sectpfe.h>
16 
17 #include "c8sectpfe-common.h"
18 #include "c8sectpfe-core.h"
19 #include "c8sectpfe-dvb.h"
20 
21 #include "dvb-pll.h"
22 #include "lnbh24.h"
23 #include "stv0367.h"
24 #include "stv0367_priv.h"
25 #include "stv6110x.h"
26 #include "stv090x.h"
27 #include "tda18212.h"
28 
29 static inline const char *dvb_card_str(unsigned int c)
30 {
31 	switch (c) {
32 	case STV0367_TDA18212_NIMA_1:	return "STV0367_TDA18212_NIMA_1";
33 	case STV0367_TDA18212_NIMA_2:	return "STV0367_TDA18212_NIMA_2";
34 	case STV0367_TDA18212_NIMB_1:	return "STV0367_TDA18212_NIMB_1";
35 	case STV0367_TDA18212_NIMB_2:	return "STV0367_TDA18212_NIMB_2";
36 	case STV0903_6110_LNB24_NIMA:	return "STV0903_6110_LNB24_NIMA";
37 	case STV0903_6110_LNB24_NIMB:	return "STV0903_6110_LNB24_NIMB";
38 	default:			return "unknown dvb frontend card";
39 	}
40 }
41 
42 static struct stv090x_config stv090x_config = {
43 	.device                 = STV0903,
44 	.demod_mode             = STV090x_SINGLE,
45 	.clk_mode               = STV090x_CLK_EXT,
46 	.xtal                   = 16000000,
47 	.address                = 0x69,
48 
49 	.ts1_mode               = STV090x_TSMODE_SERIAL_CONTINUOUS,
50 	.ts2_mode               = STV090x_TSMODE_SERIAL_CONTINUOUS,
51 
52 	.repeater_level         = STV090x_RPTLEVEL_64,
53 
54 	.tuner_init             = NULL,
55 	.tuner_set_mode         = NULL,
56 	.tuner_set_frequency    = NULL,
57 	.tuner_get_frequency    = NULL,
58 	.tuner_set_bandwidth    = NULL,
59 	.tuner_get_bandwidth    = NULL,
60 	.tuner_set_bbgain       = NULL,
61 	.tuner_get_bbgain       = NULL,
62 	.tuner_set_refclk       = NULL,
63 	.tuner_get_status       = NULL,
64 };
65 
66 static struct stv6110x_config stv6110x_config = {
67 	.addr                   = 0x60,
68 	.refclk                 = 16000000,
69 };
70 
71 #define NIMA 0
72 #define NIMB 1
73 
74 static struct stv0367_config stv0367_tda18212_config[] = {
75 	{
76 		.demod_address = 0x1c,
77 		.xtal = 16000000,
78 		.if_khz = 4500,
79 		.if_iq_mode = FE_TER_NORMAL_IF_TUNER,
80 		.ts_mode = STV0367_SERIAL_PUNCT_CLOCK,
81 		.clk_pol = STV0367_CLOCKPOLARITY_DEFAULT,
82 	}, {
83 		.demod_address = 0x1d,
84 		.xtal = 16000000,
85 		.if_khz = 4500,
86 		.if_iq_mode = FE_TER_NORMAL_IF_TUNER,
87 		.ts_mode = STV0367_SERIAL_PUNCT_CLOCK,
88 		.clk_pol = STV0367_CLOCKPOLARITY_DEFAULT,
89 	}, {
90 		.demod_address = 0x1e,
91 		.xtal = 16000000,
92 		.if_khz = 4500,
93 		.if_iq_mode = FE_TER_NORMAL_IF_TUNER,
94 		.ts_mode = STV0367_SERIAL_PUNCT_CLOCK,
95 		.clk_pol = STV0367_CLOCKPOLARITY_DEFAULT,
96 	},
97 };
98 
99 static struct tda18212_config tda18212_conf = {
100 	.if_dvbt_6 = 4150,
101 	.if_dvbt_7 = 4150,
102 	.if_dvbt_8 = 4500,
103 	.if_dvbc = 5000,
104 };
105 
106 int c8sectpfe_frontend_attach(struct dvb_frontend **fe,
107 		struct c8sectpfe *c8sectpfe,
108 		struct channel_info *tsin, int chan_num)
109 {
110 	struct tda18212_config *tda18212;
111 	const struct stv6110x_devctl *fe2;
112 	struct i2c_client *client;
113 	struct i2c_board_info tda18212_info = {
114 		.type = "tda18212",
115 		.addr = 0x60,
116 	};
117 
118 	if (!tsin)
119 		return -EINVAL;
120 
121 	switch (tsin->dvb_card) {
122 
123 	case STV0367_TDA18212_NIMA_1:
124 	case STV0367_TDA18212_NIMA_2:
125 	case STV0367_TDA18212_NIMB_1:
126 	case STV0367_TDA18212_NIMB_2:
127 		if (tsin->dvb_card == STV0367_TDA18212_NIMA_1)
128 			*fe = dvb_attach(stv0367ter_attach,
129 				 &stv0367_tda18212_config[0],
130 					tsin->i2c_adapter);
131 		else if (tsin->dvb_card == STV0367_TDA18212_NIMB_1)
132 			*fe = dvb_attach(stv0367ter_attach,
133 				 &stv0367_tda18212_config[1],
134 					tsin->i2c_adapter);
135 		else
136 			*fe = dvb_attach(stv0367ter_attach,
137 				 &stv0367_tda18212_config[2],
138 					tsin->i2c_adapter);
139 
140 		if (!*fe) {
141 			dev_err(c8sectpfe->device,
142 				"%s: stv0367ter_attach failed for NIM card %s\n"
143 				, __func__, dvb_card_str(tsin->dvb_card));
144 			return -ENODEV;
145 		}
146 
147 		/*
148 		 * init the demod so that i2c gate_ctrl
149 		 * to the tuner works correctly
150 		 */
151 		(*fe)->ops.init(*fe);
152 
153 		/* Allocate the tda18212 structure */
154 		tda18212 = devm_kzalloc(c8sectpfe->device,
155 					sizeof(struct tda18212_config),
156 					GFP_KERNEL);
157 		if (!tda18212) {
158 			dev_err(c8sectpfe->device,
159 				"%s: devm_kzalloc failed\n", __func__);
160 			return -ENOMEM;
161 		}
162 
163 		memcpy(tda18212, &tda18212_conf,
164 			sizeof(struct tda18212_config));
165 
166 		tda18212->fe = (*fe);
167 
168 		tda18212_info.platform_data = tda18212;
169 
170 		/* attach tuner */
171 		request_module("tda18212");
172 		client = i2c_new_client_device(tsin->i2c_adapter,
173 					       &tda18212_info);
174 		if (!i2c_client_has_driver(client)) {
175 			dvb_frontend_detach(*fe);
176 			return -ENODEV;
177 		}
178 
179 		if (!try_module_get(client->dev.driver->owner)) {
180 			i2c_unregister_device(client);
181 			dvb_frontend_detach(*fe);
182 			return -ENODEV;
183 		}
184 
185 		tsin->i2c_client = client;
186 
187 		break;
188 
189 	case STV0903_6110_LNB24_NIMA:
190 		*fe = dvb_attach(stv090x_attach,	&stv090x_config,
191 				tsin->i2c_adapter, STV090x_DEMODULATOR_0);
192 		if (!*fe) {
193 			dev_err(c8sectpfe->device, "%s: stv090x_attach failed\n"
194 				"\tfor NIM card %s\n",
195 				__func__, dvb_card_str(tsin->dvb_card));
196 			return -ENODEV;
197 		}
198 
199 		fe2 = dvb_attach(stv6110x_attach, *fe,
200 					&stv6110x_config, tsin->i2c_adapter);
201 		if (!fe2) {
202 			dev_err(c8sectpfe->device,
203 				"%s: stv6110x_attach failed for NIM card %s\n"
204 				, __func__, dvb_card_str(tsin->dvb_card));
205 			return -ENODEV;
206 		}
207 
208 		stv090x_config.tuner_init = fe2->tuner_init;
209 		stv090x_config.tuner_set_mode = fe2->tuner_set_mode;
210 		stv090x_config.tuner_set_frequency = fe2->tuner_set_frequency;
211 		stv090x_config.tuner_get_frequency = fe2->tuner_get_frequency;
212 		stv090x_config.tuner_set_bandwidth = fe2->tuner_set_bandwidth;
213 		stv090x_config.tuner_get_bandwidth = fe2->tuner_get_bandwidth;
214 		stv090x_config.tuner_set_bbgain = fe2->tuner_set_bbgain;
215 		stv090x_config.tuner_get_bbgain = fe2->tuner_get_bbgain;
216 		stv090x_config.tuner_set_refclk = fe2->tuner_set_refclk;
217 		stv090x_config.tuner_get_status = fe2->tuner_get_status;
218 
219 		dvb_attach(lnbh24_attach, *fe, tsin->i2c_adapter, 0, 0, 0x9);
220 		break;
221 
222 	default:
223 		dev_err(c8sectpfe->device,
224 			"%s: DVB frontend card %s not yet supported\n",
225 			__func__, dvb_card_str(tsin->dvb_card));
226 		return -ENODEV;
227 	}
228 
229 	(*fe)->id = chan_num;
230 
231 	dev_info(c8sectpfe->device,
232 			"DVB frontend card %s successfully attached",
233 			dvb_card_str(tsin->dvb_card));
234 	return 0;
235 }
236