1 /*
2  * bsru6.h - ALPS BSRU6 tuner support (moved from budget-ci.c)
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19  * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
20  *
21  *
22  * the project's page is at http://www.linuxtv.org
23  */
24 
25 #ifndef BSRU6_H
26 #define BSRU6_H
27 
28 static u8 alps_bsru6_inittab[] = {
29 	0x01, 0x15,
30 	0x02, 0x30,
31 	0x03, 0x00,
32 	0x04, 0x7d,   /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
33 	0x05, 0x35,   /* I2CT = 0, SCLT = 1, SDAT = 1 */
34 	0x06, 0x40,   /* DAC not used, set to high impendance mode */
35 	0x07, 0x00,   /* DAC LSB */
36 	0x08, 0x40,   /* DiSEqC off, LNB power on OP2/LOCK pin on */
37 	0x09, 0x00,   /* FIFO */
38 	0x0c, 0x51,   /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
39 	0x0d, 0x82,   /* DC offset compensation = ON, beta_agc1 = 2 */
40 	0x0e, 0x23,   /* alpha_tmg = 2, beta_tmg = 3 */
41 	0x10, 0x3f,   // AGC2  0x3d
42 	0x11, 0x84,
43 	0x12, 0xb9,
44 	0x15, 0xc9,   // lock detector threshold
45 	0x16, 0x00,
46 	0x17, 0x00,
47 	0x18, 0x00,
48 	0x19, 0x00,
49 	0x1a, 0x00,
50 	0x1f, 0x50,
51 	0x20, 0x00,
52 	0x21, 0x00,
53 	0x22, 0x00,
54 	0x23, 0x00,
55 	0x28, 0x00,  // out imp: normal  out type: parallel FEC mode:0
56 	0x29, 0x1e,  // 1/2 threshold
57 	0x2a, 0x14,  // 2/3 threshold
58 	0x2b, 0x0f,  // 3/4 threshold
59 	0x2c, 0x09,  // 5/6 threshold
60 	0x2d, 0x05,  // 7/8 threshold
61 	0x2e, 0x01,
62 	0x31, 0x1f,  // test all FECs
63 	0x32, 0x19,  // viterbi and synchro search
64 	0x33, 0xfc,  // rs control
65 	0x34, 0x93,  // error control
66 	0x0f, 0x52,
67 	0xff, 0xff
68 };
69 
70 static int alps_bsru6_set_symbol_rate(struct dvb_frontend *fe, u32 srate, u32 ratio)
71 {
72 	u8 aclk = 0;
73 	u8 bclk = 0;
74 
75 	if (srate < 1500000) {
76 		aclk = 0xb7;
77 		bclk = 0x47;
78 	} else if (srate < 3000000) {
79 		aclk = 0xb7;
80 		bclk = 0x4b;
81 	} else if (srate < 7000000) {
82 		aclk = 0xb7;
83 		bclk = 0x4f;
84 	} else if (srate < 14000000) {
85 		aclk = 0xb7;
86 		bclk = 0x53;
87 	} else if (srate < 30000000) {
88 		aclk = 0xb6;
89 		bclk = 0x53;
90 	} else if (srate < 45000000) {
91 		aclk = 0xb4;
92 		bclk = 0x51;
93 	}
94 
95 	stv0299_writereg(fe, 0x13, aclk);
96 	stv0299_writereg(fe, 0x14, bclk);
97 	stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
98 	stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
99 	stv0299_writereg(fe, 0x21, ratio & 0xf0);
100 
101 	return 0;
102 }
103 
104 static int alps_bsru6_tuner_set_params(struct dvb_frontend *fe)
105 {
106 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
107 	u8 buf[4];
108 	u32 div;
109 	struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
110 	struct i2c_adapter *i2c = fe->tuner_priv;
111 
112 	if ((p->frequency < 950000) || (p->frequency > 2150000))
113 		return -EINVAL;
114 
115 	div = (p->frequency + (125 - 1)) / 125;	/* round correctly */
116 	buf[0] = (div >> 8) & 0x7f;
117 	buf[1] = div & 0xff;
118 	buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
119 	buf[3] = 0xC4;
120 
121 	if (p->frequency > 1530000)
122 		buf[3] = 0xc0;
123 
124 	if (fe->ops.i2c_gate_ctrl)
125 		fe->ops.i2c_gate_ctrl(fe, 1);
126 	if (i2c_transfer(i2c, &msg, 1) != 1)
127 		return -EIO;
128 	return 0;
129 }
130 
131 static struct stv0299_config alps_bsru6_config = {
132 	.demod_address = 0x68,
133 	.inittab = alps_bsru6_inittab,
134 	.mclk = 88000000UL,
135 	.invert = 1,
136 	.skip_reinit = 0,
137 	.lock_output = STV0299_LOCKOUTPUT_1,
138 	.volt13_op0_op1 = STV0299_VOLT13_OP1,
139 	.min_delay_ms = 100,
140 	.set_symbol_rate = alps_bsru6_set_symbol_rate,
141 };
142 
143 #endif
144