path: root/drivers/stream_input/tv_frontend/dtv_demod/tuner_func.c (plain)
blob: f4c1a3808ba64a1de8fdc8eb8f9ebc603943bd4e

1	/*
2	* Copyright (C) 2017 Amlogic, Inc. All rights reserved.
3	*
4	* This program is free software; you can redistribute it and/or modify
5	* it under the terms of the GNU General Public License as published by
6	* the Free Software Foundation; either version 2 of the License, or
7	* (at your option) any later version.
8	*
9	* This program is distributed in the hope that it will be useful, but WITHOUT
10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12	* more details.
13	*
14	* You should have received a copy of the GNU General Public License along
15	* with this program; if not, write to the Free Software Foundation, Inc.,
16	* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17	*
18	* Description:
19	*/
20	#include <linux/kernel.h>
21	#include <linux/i2c.h>
22	#include <linux/dvb/aml_demod.h>
23	#include "demod_func.h"
24	#include "../aml_fe.h"
25
26	int tuner_get_ch_power(struct aml_fe_dev *adap)
27	{
28	int strength = 0;
29	int agc_if_gain;
30
31	struct dvb_frontend *dvbfe;
32
33	dvbfe = get_si2177_tuner();
34	if (dvbfe != NULL)
35	if (dvbfe->ops.tuner_ops.get_strength)
36	strength = dvbfe->ops.tuner_ops.get_strength(dvbfe);
37	if (strength <= -56) {
38	agc_if_gain =
39	((dtmb_read_reg(DTMB_TOP_FRONT_AGC))&0x3ff);
40	strength = dtmb_get_power_strength(agc_if_gain);
41	}
42
43	return strength;
44	}
45
46	struct dvb_tuner_info *tuner_get_info(int type, int mode)
47	{
48	/*type : 0-NULL, 1-DCT7070, 2-Maxliner, 3-FJ2207, 4-TD1316 */
49	/*mode: 0-DVBC 1-DVBT */
50	static struct dvb_tuner_info tinfo_null = { };
51
52	static struct dvb_tuner_info tinfo_MXL5003S[2] = {
53	[1] = { /*DVBT*/ .name = "Maxliner",
54	.frequency_min = 44000000,
55	.frequency_max = 885000000, }
56	};
57	static struct dvb_tuner_info tinfo_FJ2207[2] = {
58	[0] = { /*DVBC*/ .name = "FJ2207",
59	.frequency_min = 54000000,
60	.frequency_max = 870000000, },
61	[1] = { /*DVBT*/ .name = "FJ2207",
62	.frequency_min = 174000000,
63	.frequency_max = 864000000, },
64	};
65	static struct dvb_tuner_info tinfo_DCT7070[2] = {
66	[0] = { /*DVBC*/ .name = "DCT7070",
67	.frequency_min = 51000000,
68	.frequency_max = 860000000, }
69	};
70	static struct dvb_tuner_info tinfo_TD1316[2] = {
71	[1] = { /*DVBT*/ .name = "TD1316",
72	.frequency_min = 51000000,
73	.frequency_max = 858000000, }
74	};
75	static struct dvb_tuner_info tinfo_SI2176[2] = {
76	[0] = { /*DVBC*/
77	/*#error please add SI2176 code*/
78	.name = "SI2176",
79	.frequency_min = 51000000,
80	.frequency_max = 860000000,
81	}
82	};
83
84	struct dvb_tuner_info *tinfo[] = {
85	&tinfo_null,
86	tinfo_DCT7070,
87	tinfo_MXL5003S,
88	tinfo_FJ2207,
89	tinfo_TD1316,
90	tinfo_SI2176
91	};
92
93	if ((type < 0) || (type > 4) || (mode < 0) || (mode > 1))
94	return tinfo[0];
95
96	return &tinfo[type][mode];
97	}
98
99	struct agc_power_tab *tuner_get_agc_power_table(int type)
100	{
101	/*type : 0-NULL, 1-DCT7070, 2-Maxliner, 3-FJ2207, 4-TD1316 */
102	static int calcE_FJ2207[31] = {
103	87, 118, 138, 154, 172, 197, 245,
104	273, 292, 312, 327, 354, 406, 430,
105	448, 464, 481, 505, 558, 583, 599,
106	616, 632, 653, 698, 725, 745, 762,
107	779, 801, 831 };
108	static int calcE_Maxliner[79] = {
109	543, 552, 562, 575, 586, 596, 608,
110	618, 627, 635, 645, 653, 662, 668,
111	678, 689, 696, 705, 715, 725, 733,
112	742, 752, 763, 769, 778, 789, 800,
113	807, 816, 826, 836, 844, 854, 864,
114	874, 884, 894, 904, 913, 923, 932,
115	942, 951, 961, 970, 980, 990, 1000,
116	1012, 1022, 1031, 1040, 1049, 1059,
117	1069, 1079, 1088, 1098, 1107, 1115,
118	1123, 1132, 1140, 1148, 1157, 1165,
119	1173, 1179, 1186, 1192, 1198, 1203,
120	1208, 1208, 1214, 1217, 1218, 1220 };
121
122	static struct agc_power_tab power_tab[] = {
123	[0] = { "null", 0, 0, NULL },
124	[1] = {
125	.name = "DCT7070",
126	.level = 0,
127	.ncalcE = 0,
128	.calcE = NULL,
129	},
130	[2] = {
131	.name = "Maxlear",
132	.level = -22,
133	.ncalcE = sizeof(calcE_Maxliner) / sizeof(int),
134	.calcE = calcE_Maxliner,
135	},
136	[3] = {
137	.name = "FJ2207",
138	.level = -62,
139	.ncalcE = sizeof(calcE_FJ2207) / sizeof(int),
140	.calcE = calcE_FJ2207,
141	},
142	[4] = {
143	.name = "TD1316",
144	.level = 0,
145	.ncalcE = 0,
146	.calcE = NULL,
147	},
148	};
149
150	if (type >= 2 && type <= 3)
151	return &power_tab[type];
152	else
153	return &power_tab[3];
154	};
155
156	int agc_power_to_dbm(int agc_gain, int ad_power, int offset, int tuner)
157	{
158	struct agc_power_tab *ptab = tuner_get_agc_power_table(tuner);
159	int est_rf_power;
160	int j;
161
162	for (j = 0; j < ptab->ncalcE; j++)
163	if (agc_gain <= ptab->calcE[j])
164	break;
165
166	est_rf_power = ptab->level - j - (ad_power >> 4) + 12 + offset;
167
168	return est_rf_power;
169	}
170
171	int dtmb_get_power_strength(int agc_gain)
172	{
173	int strength;
174	int j;
175	static int calcE_R840[13] = {
176	1010, 969, 890, 840, 800,
177	760, 720, 680, 670, 660,
178	510, 440, 368};
179	for (j = 0; j < sizeof(calcE_R840)/sizeof(int); j++)
180	if (agc_gain >= calcE_R840[j])
181	break;
182	if (agc_gain >= 440)
183	strength = -90+j*3;
184	else
185	strength = -56;
186	return strength;
187	}
188
189
190