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The dvb_frontend_ops is a pointer inside dvb_frontend. That's why every demod-driver is having a field of dvb_frontend_ops in its private-state-struct and using the reference for filling the pointer-field in dvb_frontend. - It saves at least two lines of code per demod-driver, - reduces object size (one less dereference per frontend_ops-access), - be coherent with dvb_tuner_ops, - makes it a little bit easier for newbies to understand how it works and - avoids stupid mistakes because you would have to copy the dvb_frontend_ops always, before you could assign the static pointer directly, which was dangerous. Signed-off-by: Patrick Boettcher <pb@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
/*
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* bsbe1.h - ALPS BSBE1 tuner support (moved from av7110.c)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
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*
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*
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* the project's page is at http://www.linuxtv.org
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*/
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#ifndef BSBE1_H
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#define BSBE1_H
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static u8 alps_bsbe1_inittab[] = {
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0x01, 0x15,
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0x02, 0x30,
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0x03, 0x00,
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0x04, 0x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
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0x05, 0x35, /* I2CT = 0, SCLT = 1, SDAT = 1 */
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0x06, 0x40, /* DAC not used, set to high impendance mode */
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0x07, 0x00, /* DAC LSB */
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0x08, 0x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */
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0x09, 0x00, /* FIFO */
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0x0c, 0x51, /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
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0x0d, 0x82, /* DC offset compensation = ON, beta_agc1 = 2 */
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0x0e, 0x23, /* alpha_tmg = 2, beta_tmg = 3 */
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0x10, 0x3f, // AGC2 0x3d
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0x11, 0x84,
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0x12, 0xb9,
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0x15, 0xc9, // lock detector threshold
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0x16, 0x00,
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0x17, 0x00,
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0x18, 0x00,
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0x19, 0x00,
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0x1a, 0x00,
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0x1f, 0x50,
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0x20, 0x00,
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0x21, 0x00,
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0x22, 0x00,
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0x23, 0x00,
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0x28, 0x00, // out imp: normal out type: parallel FEC mode:0
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0x29, 0x1e, // 1/2 threshold
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0x2a, 0x14, // 2/3 threshold
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0x2b, 0x0f, // 3/4 threshold
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0x2c, 0x09, // 5/6 threshold
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0x2d, 0x05, // 7/8 threshold
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0x2e, 0x01,
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0x31, 0x1f, // test all FECs
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0x32, 0x19, // viterbi and synchro search
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0x33, 0xfc, // rs control
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0x34, 0x93, // error control
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0x0f, 0x92,
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0xff, 0xff
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};
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static int alps_bsbe1_set_symbol_rate(struct dvb_frontend* fe, u32 srate, u32 ratio)
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{
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u8 aclk = 0;
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u8 bclk = 0;
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if (srate < 1500000) { aclk = 0xb7; bclk = 0x47; }
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else if (srate < 3000000) { aclk = 0xb7; bclk = 0x4b; }
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else if (srate < 7000000) { aclk = 0xb7; bclk = 0x4f; }
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else if (srate < 14000000) { aclk = 0xb7; bclk = 0x53; }
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else if (srate < 30000000) { aclk = 0xb6; bclk = 0x53; }
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else if (srate < 45000000) { aclk = 0xb4; bclk = 0x51; }
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stv0299_writereg(fe, 0x13, aclk);
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stv0299_writereg(fe, 0x14, bclk);
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stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
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stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
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stv0299_writereg(fe, 0x21, (ratio ) & 0xf0);
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return 0;
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}
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static int alps_bsbe1_tuner_set_params(struct dvb_frontend* fe, struct dvb_frontend_parameters *params)
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{
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int ret;
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u8 data[4];
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u32 div;
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struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };
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struct i2c_adapter *i2c = fe->tuner_priv;
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if ((params->frequency < 950000) || (params->frequency > 2150000))
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return -EINVAL;
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div = (params->frequency + (125 - 1)) / 125; // round correctly
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data[0] = (div >> 8) & 0x7f;
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data[1] = div & 0xff;
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data[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
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data[3] = (params->frequency > 1530000) ? 0xE0 : 0xE4;
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1);
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ret = i2c_transfer(i2c, &msg, 1);
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return (ret != 1) ? -EIO : 0;
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}
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static struct stv0299_config alps_bsbe1_config = {
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.demod_address = 0x68,
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.inittab = alps_bsbe1_inittab,
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.mclk = 88000000UL,
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.invert = 1,
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.skip_reinit = 0,
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.min_delay_ms = 100,
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.set_symbol_rate = alps_bsbe1_set_symbol_rate,
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};
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#endif
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