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https://github.com/FEX-Emu/linux.git
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3d2f18d346
Used script loader is quite useless and hides register numbers making code hard to understand. Get rid of it and use standard RegMap register write functions directly. it913x_priv.h file leaves empty after that change and is also removed. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
436 lines
9.8 KiB
C
436 lines
9.8 KiB
C
/*
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* ITE Tech IT9137 silicon tuner driver
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*
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* Copyright (C) 2011 Malcolm Priestley (tvboxspy@gmail.com)
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* IT9137 Copyright (C) ITE Tech Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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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*
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* GNU General Public License for more details.
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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., 675 Mass Ave, Cambridge, MA 02139, USA.=
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*/
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#include "it913x.h"
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#include <linux/regmap.h>
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struct it913x_dev {
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struct i2c_client *client;
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struct regmap *regmap;
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struct dvb_frontend *fe;
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u8 chip_ver:2;
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u8 role:2;
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u16 tun_xtal;
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u8 tun_fdiv;
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u8 tun_clk_mode;
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u32 tun_fn_min;
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};
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static int it913x_init(struct dvb_frontend *fe)
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{
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struct it913x_dev *dev = fe->tuner_priv;
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int ret, i;
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unsigned int reg;
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u8 val, nv_val;
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u8 nv[] = {48, 32, 24, 16, 12, 8, 6, 4, 2};
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u8 b[2];
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ret = regmap_read(dev->regmap, 0x80ec86, ®);
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switch (reg) {
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case 0:
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dev->tun_clk_mode = reg;
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dev->tun_xtal = 2000;
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dev->tun_fdiv = 3;
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val = 16;
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break;
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case 1:
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default: /* I/O error too */
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dev->tun_clk_mode = reg;
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dev->tun_xtal = 640;
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dev->tun_fdiv = 1;
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val = 6;
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break;
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}
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ret = regmap_read(dev->regmap, 0x80ed03, ®);
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if (reg < 0)
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return -ENODEV;
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else if (reg < ARRAY_SIZE(nv))
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nv_val = nv[reg];
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else
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nv_val = 2;
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for (i = 0; i < 50; i++) {
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ret = regmap_bulk_read(dev->regmap, 0x80ed23, &b[0], sizeof(b));
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reg = (b[1] << 8) + b[0];
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if (reg > 0)
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break;
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if (ret)
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return -ENODEV;
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udelay(2000);
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}
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dev->tun_fn_min = dev->tun_xtal * reg;
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dev->tun_fn_min /= (dev->tun_fdiv * nv_val);
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dev_dbg(&dev->client->dev, "Tuner fn_min %d\n", dev->tun_fn_min);
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if (dev->chip_ver > 1)
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msleep(50);
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else {
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for (i = 0; i < 50; i++) {
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ret = regmap_read(dev->regmap, 0x80ec82, ®);
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if (ret < 0)
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return -ENODEV;
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if (reg > 0)
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break;
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udelay(2000);
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}
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}
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/* Power Up Tuner - common all versions */
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ret = regmap_write(dev->regmap, 0x80ec40, 0x1);
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ret |= regmap_write(dev->regmap, 0x80ec57, 0x0);
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ret |= regmap_write(dev->regmap, 0x80ec58, 0x0);
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return regmap_write(dev->regmap, 0x80ed81, val);
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}
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static int it913x_sleep(struct dvb_frontend *fe)
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{
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struct it913x_dev *dev = fe->tuner_priv;
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int ret, len;
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dev_dbg(&dev->client->dev, "role=%u\n", dev->role);
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ret = regmap_bulk_write(dev->regmap, 0x80ec40, "\x00", 1);
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if (ret)
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goto err;
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/*
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* Writing '0x00' to master tuner register '0x80ec08' causes slave tuner
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* communication lost. Due to that, we cannot put master full sleep.
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*/
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if (dev->role == IT913X_ROLE_DUAL_MASTER)
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len = 4;
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else
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len = 15;
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dev_dbg(&dev->client->dev, "role=%u len=%d\n", dev->role, len);
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ret = regmap_bulk_write(dev->regmap, 0x80ec02,
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"\x3f\x1f\x3f\x3e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
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len);
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if (ret)
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goto err;
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ret = regmap_bulk_write(dev->regmap, 0x80ec12, "\x00\x00\x00\x00", 4);
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if (ret)
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goto err;
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ret = regmap_bulk_write(dev->regmap, 0x80ec17,
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9);
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if (ret)
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goto err;
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ret = regmap_bulk_write(dev->regmap, 0x80ec22,
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 10);
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if (ret)
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goto err;
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ret = regmap_bulk_write(dev->regmap, 0x80ec20, "\x00", 1);
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if (ret)
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goto err;
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ret = regmap_bulk_write(dev->regmap, 0x80ec3f, "\x01", 1);
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if (ret)
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goto err;
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return 0;
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err:
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dev_dbg(&dev->client->dev, "failed %d\n", ret);
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return ret;
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}
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static int it9137_set_params(struct dvb_frontend *fe)
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{
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struct it913x_dev *dev = fe->tuner_priv;
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struct dtv_frontend_properties *p = &fe->dtv_property_cache;
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u32 bandwidth = p->bandwidth_hz;
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u32 frequency_m = p->frequency;
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int ret;
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unsigned int reg;
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u32 frequency = frequency_m / 1000;
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u32 freq, temp_f, tmp;
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u16 iqik_m_cal;
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u16 n_div;
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u8 n;
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u8 l_band;
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u8 lna_band;
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u8 bw;
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dev_dbg(&dev->client->dev, "Tuner Frequency %d Bandwidth %d\n",
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frequency, bandwidth);
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if (frequency >= 51000 && frequency <= 440000) {
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l_band = 0;
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lna_band = 0;
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} else if (frequency > 440000 && frequency <= 484000) {
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l_band = 1;
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lna_band = 1;
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} else if (frequency > 484000 && frequency <= 533000) {
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l_band = 1;
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lna_band = 2;
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} else if (frequency > 533000 && frequency <= 587000) {
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l_band = 1;
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lna_band = 3;
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} else if (frequency > 587000 && frequency <= 645000) {
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l_band = 1;
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lna_band = 4;
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} else if (frequency > 645000 && frequency <= 710000) {
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l_band = 1;
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lna_band = 5;
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} else if (frequency > 710000 && frequency <= 782000) {
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l_band = 1;
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lna_band = 6;
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} else if (frequency > 782000 && frequency <= 860000) {
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l_band = 1;
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lna_band = 7;
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} else if (frequency > 1450000 && frequency <= 1492000) {
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l_band = 1;
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lna_band = 0;
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} else if (frequency > 1660000 && frequency <= 1685000) {
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l_band = 1;
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lna_band = 1;
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} else
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return -EINVAL;
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ret = regmap_write(dev->regmap, 0x80ee06, lna_band);
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if (ret)
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goto err;
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switch (bandwidth) {
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case 5000000:
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bw = 0;
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break;
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case 6000000:
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bw = 2;
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break;
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case 7000000:
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bw = 4;
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break;
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default:
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case 8000000:
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bw = 6;
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break;
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}
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ret = regmap_write(dev->regmap, 0x80ec56, bw);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, 0x80ec4c, 0xa0 | (l_band << 3));
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if (ret)
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goto err;
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if (frequency > 53000 && frequency <= 74000) {
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n_div = 48;
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n = 0;
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} else if (frequency > 74000 && frequency <= 111000) {
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n_div = 32;
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n = 1;
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} else if (frequency > 111000 && frequency <= 148000) {
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n_div = 24;
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n = 2;
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} else if (frequency > 148000 && frequency <= 222000) {
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n_div = 16;
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n = 3;
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} else if (frequency > 222000 && frequency <= 296000) {
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n_div = 12;
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n = 4;
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} else if (frequency > 296000 && frequency <= 445000) {
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n_div = 8;
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n = 5;
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} else if (frequency > 445000 && frequency <= dev->tun_fn_min) {
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n_div = 6;
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n = 6;
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} else if (frequency > dev->tun_fn_min && frequency <= 950000) {
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n_div = 4;
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n = 7;
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} else if (frequency > 1450000 && frequency <= 1680000) {
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n_div = 2;
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n = 0;
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} else
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return -EINVAL;
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ret = regmap_read(dev->regmap, 0x80ed81, ®);
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iqik_m_cal = (u16)reg * n_div;
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if (reg < 0x20) {
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if (dev->tun_clk_mode == 0)
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iqik_m_cal = (iqik_m_cal * 9) >> 5;
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else
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iqik_m_cal >>= 1;
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} else {
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iqik_m_cal = 0x40 - iqik_m_cal;
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if (dev->tun_clk_mode == 0)
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iqik_m_cal = ~((iqik_m_cal * 9) >> 5);
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else
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iqik_m_cal = ~(iqik_m_cal >> 1);
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}
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temp_f = frequency * (u32)n_div * (u32)dev->tun_fdiv;
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freq = temp_f / dev->tun_xtal;
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tmp = freq * dev->tun_xtal;
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if ((temp_f - tmp) >= (dev->tun_xtal >> 1))
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freq++;
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freq += (u32) n << 13;
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/* Frequency OMEGA_IQIK_M_CAL_MID*/
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temp_f = freq + (u32)iqik_m_cal;
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ret = regmap_write(dev->regmap, 0x80ec4d, temp_f & 0xff);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, 0x80ec4e, (temp_f >> 8) & 0xff);
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if (ret)
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goto err;
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dev_dbg(&dev->client->dev, "High Frequency = %04x\n", temp_f);
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/* Lower frequency */
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ret = regmap_write(dev->regmap, 0x80011e, freq & 0xff);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, 0x80011f, (freq >> 8) & 0xff);
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if (ret)
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goto err;
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dev_dbg(&dev->client->dev, "low Frequency = %04x\n", freq);
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return 0;
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err:
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dev_dbg(&dev->client->dev, "failed %d\n", ret);
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return ret;
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}
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static const struct dvb_tuner_ops it913x_tuner_ops = {
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.info = {
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.name = "ITE Tech IT913X",
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.frequency_min = 174000000,
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.frequency_max = 862000000,
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},
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.init = it913x_init,
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.sleep = it913x_sleep,
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.set_params = it9137_set_params,
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};
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static int it913x_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct it913x_config *cfg = client->dev.platform_data;
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struct dvb_frontend *fe = cfg->fe;
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struct it913x_dev *dev;
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int ret;
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char *chip_ver_str;
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static const struct regmap_config regmap_config = {
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.reg_bits = 24,
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.val_bits = 8,
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};
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dev = kzalloc(sizeof(struct it913x_dev), GFP_KERNEL);
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if (dev == NULL) {
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ret = -ENOMEM;
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dev_err(&client->dev, "kzalloc() failed\n");
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goto err;
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}
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dev->client = client;
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dev->fe = cfg->fe;
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dev->chip_ver = cfg->chip_ver;
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dev->role = cfg->role;
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dev->regmap = regmap_init_i2c(client, ®map_config);
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if (IS_ERR(dev->regmap)) {
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ret = PTR_ERR(dev->regmap);
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goto err_kfree;
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}
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/* tuner RF initial */
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ret = regmap_write(dev->regmap, 0x80ec4c, 0x68);
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if (ret)
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goto err_regmap_exit;
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fe->tuner_priv = dev;
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memcpy(&fe->ops.tuner_ops, &it913x_tuner_ops,
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sizeof(struct dvb_tuner_ops));
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i2c_set_clientdata(client, dev);
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if (dev->chip_ver == 1)
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chip_ver_str = "AX";
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else if (dev->chip_ver == 2)
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chip_ver_str = "BX";
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else
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chip_ver_str = "??";
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dev_info(&dev->client->dev, "ITE IT913X %s successfully attached\n",
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chip_ver_str);
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dev_dbg(&dev->client->dev, "chip_ver=%u role=%u\n", dev->chip_ver, dev->role);
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return 0;
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err_regmap_exit:
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regmap_exit(dev->regmap);
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err_kfree:
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kfree(dev);
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err:
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dev_dbg(&client->dev, "failed %d\n", ret);
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return ret;
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}
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static int it913x_remove(struct i2c_client *client)
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{
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struct it913x_dev *dev = i2c_get_clientdata(client);
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struct dvb_frontend *fe = dev->fe;
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dev_dbg(&client->dev, "\n");
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memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
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fe->tuner_priv = NULL;
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regmap_exit(dev->regmap);
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kfree(dev);
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return 0;
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}
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static const struct i2c_device_id it913x_id_table[] = {
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{"it913x", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, it913x_id_table);
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static struct i2c_driver it913x_driver = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "it913x",
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},
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.probe = it913x_probe,
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.remove = it913x_remove,
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.id_table = it913x_id_table,
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};
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module_i2c_driver(it913x_driver);
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MODULE_DESCRIPTION("ITE Tech IT913X silicon tuner driver");
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MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
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MODULE_LICENSE("GPL");
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