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
28static 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
70static 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
104static 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
131static 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