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V4L/DVB: NXP TDA18218 silicon tuner driver
Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari
Mauro Carvalho Chehab
parent
fba32e0c70
commit
51ff2e2c8e
@ -179,4 +179,11 @@ config MEDIA_TUNER_MAX2165
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help
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A driver for the silicon tuner MAX2165 from Maxim.
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config MEDIA_TUNER_TDA18218
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tristate "NXP TDA18218 silicon tuner"
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depends on VIDEO_MEDIA && I2C
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default m if MEDIA_TUNER_CUSTOMISE
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help
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NXP TDA18218 silicon tuner driver.
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endif # MEDIA_TUNER_CUSTOMISE
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@ -24,6 +24,7 @@ obj-$(CONFIG_MEDIA_TUNER_MXL5005S) += mxl5005s.o
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obj-$(CONFIG_MEDIA_TUNER_MXL5007T) += mxl5007t.o
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obj-$(CONFIG_MEDIA_TUNER_MC44S803) += mc44s803.o
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obj-$(CONFIG_MEDIA_TUNER_MAX2165) += max2165.o
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obj-$(CONFIG_MEDIA_TUNER_TDA18218) += tda18218.o
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EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core
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EXTRA_CFLAGS += -Idrivers/media/dvb/frontends
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334
drivers/media/common/tuners/tda18218.c
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334
drivers/media/common/tuners/tda18218.c
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@ -0,0 +1,334 @@
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/*
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* NXP TDA18218HN silicon tuner driver
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*
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* Copyright (C) 2010 Antti Palosaari <crope@iki.fi>
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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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* 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 "tda18218.h"
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#include "tda18218_priv.h"
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
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/* write multiple registers */
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static int tda18218_wr_regs(struct tda18218_priv *priv, u8 reg, u8 *val, u8 len)
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{
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int ret;
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u8 buf[1+len], quotient, remainder, i, msg_len, msg_len_max;
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struct i2c_msg msg[1] = {
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{
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.addr = priv->cfg->i2c_address,
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.flags = 0,
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.buf = buf,
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}
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};
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msg_len_max = priv->cfg->i2c_wr_max - 1;
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quotient = len / msg_len_max;
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remainder = len % msg_len_max;
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msg_len = msg_len_max;
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for (i = 0; (i <= quotient && remainder); i++) {
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if (i == quotient) /* set len of the last msg */
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msg_len = remainder;
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msg[0].len = msg_len + 1;
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buf[0] = reg + i * msg_len_max;
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memcpy(&buf[1], &val[i * msg_len_max], msg_len);
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ret = i2c_transfer(priv->i2c, msg, 1);
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if (ret != 1)
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break;
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}
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if (ret == 1) {
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ret = 0;
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} else {
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warn("i2c wr failed ret:%d reg:%02x len:%d", ret, reg, len);
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ret = -EREMOTEIO;
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}
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return ret;
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}
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/* read multiple registers */
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static int tda18218_rd_regs(struct tda18218_priv *priv, u8 reg, u8 *val, u8 len)
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{
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int ret;
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u8 buf[reg+len]; /* we must start read always from reg 0x00 */
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struct i2c_msg msg[2] = {
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{
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.addr = priv->cfg->i2c_address,
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.flags = 0,
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.len = 1,
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.buf = "\x00",
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}, {
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.addr = priv->cfg->i2c_address,
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.flags = I2C_M_RD,
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.len = sizeof(buf),
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.buf = buf,
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}
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};
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ret = i2c_transfer(priv->i2c, msg, 2);
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if (ret == 2) {
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memcpy(val, &buf[reg], len);
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ret = 0;
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} else {
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warn("i2c rd failed ret:%d reg:%02x len:%d", ret, reg, len);
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ret = -EREMOTEIO;
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}
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return ret;
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}
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/* write single register */
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static int tda18218_wr_reg(struct tda18218_priv *priv, u8 reg, u8 val)
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{
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return tda18218_wr_regs(priv, reg, &val, 1);
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}
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/* read single register */
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static int tda18218_rd_reg(struct tda18218_priv *priv, u8 reg, u8 *val)
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{
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return tda18218_rd_regs(priv, reg, val, 1);
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}
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static int tda18218_set_params(struct dvb_frontend *fe,
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struct dvb_frontend_parameters *params)
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{
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struct tda18218_priv *priv = fe->tuner_priv;
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int ret;
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u8 buf[3], i, BP_Filter, LP_Fc;
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u32 LO_Frac;
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/* TODO: find out correct AGC algorithm */
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u8 agc[][2] = {
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{ R20_AGC11, 0x60 },
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{ R23_AGC21, 0x02 },
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{ R20_AGC11, 0xa0 },
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{ R23_AGC21, 0x09 },
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{ R20_AGC11, 0xe0 },
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{ R23_AGC21, 0x0c },
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{ R20_AGC11, 0x40 },
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{ R23_AGC21, 0x01 },
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{ R20_AGC11, 0x80 },
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{ R23_AGC21, 0x08 },
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{ R20_AGC11, 0xc0 },
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{ R23_AGC21, 0x0b },
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{ R24_AGC22, 0x1c },
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{ R24_AGC22, 0x0c },
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};
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
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/* low-pass filter cut-off frequency */
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switch (params->u.ofdm.bandwidth) {
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case BANDWIDTH_6_MHZ:
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LP_Fc = 0;
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LO_Frac = params->frequency + 4000000;
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break;
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case BANDWIDTH_7_MHZ:
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LP_Fc = 1;
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LO_Frac = params->frequency + 3500000;
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break;
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case BANDWIDTH_8_MHZ:
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default:
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LP_Fc = 2;
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LO_Frac = params->frequency + 4000000;
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break;
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}
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/* band-pass filter */
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if (LO_Frac < 188000000)
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BP_Filter = 3;
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else if (LO_Frac < 253000000)
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BP_Filter = 4;
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else if (LO_Frac < 343000000)
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BP_Filter = 5;
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else
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BP_Filter = 6;
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buf[0] = (priv->regs[R1A_IF1] & ~7) | BP_Filter; /* BP_Filter */
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buf[1] = (priv->regs[R1B_IF2] & ~3) | LP_Fc; /* LP_Fc */
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buf[2] = priv->regs[R1C_AGC2B];
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ret = tda18218_wr_regs(priv, R1A_IF1, buf, 3);
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if (ret)
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goto error;
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buf[0] = (LO_Frac / 1000) >> 12; /* LO_Frac_0 */
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buf[1] = (LO_Frac / 1000) >> 4; /* LO_Frac_1 */
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buf[2] = (LO_Frac / 1000) << 4 |
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(priv->regs[R0C_MD5] & 0x0f); /* LO_Frac_2 */
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ret = tda18218_wr_regs(priv, R0A_MD3, buf, 3);
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if (ret)
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goto error;
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buf[0] = priv->regs[R0F_MD8] | (1 << 6); /* Freq_prog_Start */
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ret = tda18218_wr_regs(priv, R0F_MD8, buf, 1);
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if (ret)
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goto error;
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buf[0] = priv->regs[R0F_MD8] & ~(1 << 6); /* Freq_prog_Start */
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ret = tda18218_wr_regs(priv, R0F_MD8, buf, 1);
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if (ret)
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goto error;
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/* trigger AGC */
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for (i = 0; i < ARRAY_SIZE(agc); i++) {
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ret = tda18218_wr_reg(priv, agc[i][0], agc[i][1]);
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if (ret)
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goto error;
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}
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error:
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
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if (ret)
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dbg("%s: failed ret:%d", __func__, ret);
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return ret;
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}
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static int tda18218_sleep(struct dvb_frontend *fe)
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{
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struct tda18218_priv *priv = fe->tuner_priv;
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int ret;
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
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/* standby */
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ret = tda18218_wr_reg(priv, R17_PD1, priv->regs[R17_PD1] | (1 << 0));
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
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if (ret)
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dbg("%s: failed ret:%d", __func__, ret);
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return ret;
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}
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static int tda18218_init(struct dvb_frontend *fe)
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{
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struct tda18218_priv *priv = fe->tuner_priv;
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int ret;
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/* TODO: calibrations */
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
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ret = tda18218_wr_regs(priv, R00_ID, priv->regs, TDA18218_NUM_REGS);
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
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if (ret)
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dbg("%s: failed ret:%d", __func__, ret);
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return ret;
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}
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static int tda18218_release(struct dvb_frontend *fe)
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{
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kfree(fe->tuner_priv);
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fe->tuner_priv = NULL;
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return 0;
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}
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static const struct dvb_tuner_ops tda18218_tuner_ops = {
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.info = {
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.name = "NXP TDA18218",
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.frequency_min = 174000000,
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.frequency_max = 864000000,
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.frequency_step = 1000,
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},
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.release = tda18218_release,
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.init = tda18218_init,
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.sleep = tda18218_sleep,
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.set_params = tda18218_set_params,
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};
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struct dvb_frontend *tda18218_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c, struct tda18218_config *cfg)
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{
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struct tda18218_priv *priv = NULL;
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u8 val;
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int ret;
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/* chip default registers values */
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static u8 def_regs[] = {
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0xc0, 0x88, 0x00, 0x8e, 0x03, 0x00, 0x00, 0xd0, 0x00, 0x40,
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0x00, 0x00, 0x07, 0xff, 0x84, 0x09, 0x00, 0x13, 0x00, 0x00,
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0x01, 0x84, 0x09, 0xf0, 0x19, 0x0a, 0x8e, 0x69, 0x98, 0x01,
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0x00, 0x58, 0x10, 0x40, 0x8c, 0x00, 0x0c, 0x48, 0x85, 0xc9,
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0xa7, 0x00, 0x00, 0x00, 0x30, 0x81, 0x80, 0x00, 0x39, 0x00,
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0x8a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf6, 0xf6
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};
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priv = kzalloc(sizeof(struct tda18218_priv), GFP_KERNEL);
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if (priv == NULL)
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return NULL;
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priv->cfg = cfg;
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priv->i2c = i2c;
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fe->tuner_priv = priv;
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
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/* check if the tuner is there */
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ret = tda18218_rd_reg(priv, R00_ID, &val);
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dbg("%s: ret:%d chip ID:%02x", __func__, ret, val);
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if (ret || val != def_regs[R00_ID]) {
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kfree(priv);
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return NULL;
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}
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info("NXP TDA18218HN successfully identified.");
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memcpy(&fe->ops.tuner_ops, &tda18218_tuner_ops,
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sizeof(struct dvb_tuner_ops));
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memcpy(priv->regs, def_regs, sizeof(def_regs));
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/* loop-through enabled chip default register values */
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if (priv->cfg->loop_through) {
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priv->regs[R17_PD1] = 0xb0;
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priv->regs[R18_PD2] = 0x59;
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}
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/* standby */
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ret = tda18218_wr_reg(priv, R17_PD1, priv->regs[R17_PD1] | (1 << 0));
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if (ret)
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dbg("%s: failed ret:%d", __func__, ret);
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
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return fe;
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}
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EXPORT_SYMBOL(tda18218_attach);
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MODULE_DESCRIPTION("NXP TDA18218HN 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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45
drivers/media/common/tuners/tda18218.h
Normal file
45
drivers/media/common/tuners/tda18218.h
Normal file
@ -0,0 +1,45 @@
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/*
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* NXP TDA18218HN silicon tuner driver
|
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*
|
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* Copyright (C) 2010 Antti Palosaari <crope@iki.fi>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
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*/
|
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#ifndef TDA18218_H
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#define TDA18218_H
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#include "dvb_frontend.h"
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struct tda18218_config {
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u8 i2c_address;
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u8 i2c_wr_max;
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u8 loop_through:1;
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};
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#if defined(CONFIG_MEDIA_TUNER_TDA18218) || \
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(defined(CONFIG_MEDIA_TUNER_TDA18218_MODULE) && defined(MODULE))
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extern struct dvb_frontend *tda18218_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c, struct tda18218_config *cfg);
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#else
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static inline struct dvb_frontend *tda18218_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c, struct tda18218_config *cfg)
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{
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printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
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return NULL;
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}
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#endif
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#endif
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106
drivers/media/common/tuners/tda18218_priv.h
Normal file
106
drivers/media/common/tuners/tda18218_priv.h
Normal file
@ -0,0 +1,106 @@
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/*
|
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* NXP TDA18218HN silicon tuner driver
|
||||
*
|
||||
* Copyright (C) 2010 Antti Palosaari <crope@iki.fi>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
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#ifndef TDA18218_PRIV_H
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#define TDA18218_PRIV_H
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#define LOG_PREFIX "tda18218"
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#undef dbg
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#define dbg(f, arg...) \
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if (debug) \
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printk(KERN_DEBUG LOG_PREFIX": " f "\n" , ## arg)
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#undef err
|
||||
#define err(f, arg...) printk(KERN_ERR LOG_PREFIX": " f "\n" , ## arg)
|
||||
#undef info
|
||||
#define info(f, arg...) printk(KERN_INFO LOG_PREFIX": " f "\n" , ## arg)
|
||||
#undef warn
|
||||
#define warn(f, arg...) printk(KERN_WARNING LOG_PREFIX": " f "\n" , ## arg)
|
||||
|
||||
#define R00_ID 0x00 /* ID byte */
|
||||
#define R01_R1 0x01 /* Read byte 1 */
|
||||
#define R02_R2 0x02 /* Read byte 2 */
|
||||
#define R03_R3 0x03 /* Read byte 3 */
|
||||
#define R04_R4 0x04 /* Read byte 4 */
|
||||
#define R05_R5 0x05 /* Read byte 5 */
|
||||
#define R06_R6 0x06 /* Read byte 6 */
|
||||
#define R07_MD1 0x07 /* Main divider byte 1 */
|
||||
#define R08_PSM1 0x08 /* PSM byte 1 */
|
||||
#define R09_MD2 0x09 /* Main divider byte 2 */
|
||||
#define R0A_MD3 0x0a /* Main divider byte 1 */
|
||||
#define R0B_MD4 0x0b /* Main divider byte 4 */
|
||||
#define R0C_MD5 0x0c /* Main divider byte 5 */
|
||||
#define R0D_MD6 0x0d /* Main divider byte 6 */
|
||||
#define R0E_MD7 0x0e /* Main divider byte 7 */
|
||||
#define R0F_MD8 0x0f /* Main divider byte 8 */
|
||||
#define R10_CD1 0x10 /* Call divider byte 1 */
|
||||
#define R11_CD2 0x11 /* Call divider byte 2 */
|
||||
#define R12_CD3 0x12 /* Call divider byte 3 */
|
||||
#define R13_CD4 0x13 /* Call divider byte 4 */
|
||||
#define R14_CD5 0x14 /* Call divider byte 5 */
|
||||
#define R15_CD6 0x15 /* Call divider byte 6 */
|
||||
#define R16_CD7 0x16 /* Call divider byte 7 */
|
||||
#define R17_PD1 0x17 /* Power-down byte 1 */
|
||||
#define R18_PD2 0x18 /* Power-down byte 2 */
|
||||
#define R19_XTOUT 0x19 /* XTOUT byte */
|
||||
#define R1A_IF1 0x1a /* IF byte 1 */
|
||||
#define R1B_IF2 0x1b /* IF byte 2 */
|
||||
#define R1C_AGC2B 0x1c /* AGC2b byte */
|
||||
#define R1D_PSM2 0x1d /* PSM byte 2 */
|
||||
#define R1E_PSM3 0x1e /* PSM byte 3 */
|
||||
#define R1F_PSM4 0x1f /* PSM byte 4 */
|
||||
#define R20_AGC11 0x20 /* AGC1 byte 1 */
|
||||
#define R21_AGC12 0x21 /* AGC1 byte 2 */
|
||||
#define R22_AGC13 0x22 /* AGC1 byte 3 */
|
||||
#define R23_AGC21 0x23 /* AGC2 byte 1 */
|
||||
#define R24_AGC22 0x24 /* AGC2 byte 2 */
|
||||
#define R25_AAGC 0x25 /* Analog AGC byte */
|
||||
#define R26_RC 0x26 /* RC byte */
|
||||
#define R27_RSSI 0x27 /* RSSI byte */
|
||||
#define R28_IRCAL1 0x28 /* IR CAL byte 1 */
|
||||
#define R29_IRCAL2 0x29 /* IR CAL byte 2 */
|
||||
#define R2A_IRCAL3 0x2a /* IR CAL byte 3 */
|
||||
#define R2B_IRCAL4 0x2b /* IR CAL byte 4 */
|
||||
#define R2C_RFCAL1 0x2c /* RF CAL byte 1 */
|
||||
#define R2D_RFCAL2 0x2d /* RF CAL byte 2 */
|
||||
#define R2E_RFCAL3 0x2e /* RF CAL byte 3 */
|
||||
#define R2F_RFCAL4 0x2f /* RF CAL byte 4 */
|
||||
#define R30_RFCAL5 0x30 /* RF CAL byte 5 */
|
||||
#define R31_RFCAL6 0x31 /* RF CAL byte 6 */
|
||||
#define R32_RFCAL7 0x32 /* RF CAL byte 7 */
|
||||
#define R33_RFCAL8 0x33 /* RF CAL byte 8 */
|
||||
#define R34_RFCAL9 0x34 /* RF CAL byte 9 */
|
||||
#define R35_RFCAL10 0x35 /* RF CAL byte 10 */
|
||||
#define R36_RFCALRAM1 0x36 /* RF CAL RAM byte 1 */
|
||||
#define R37_RFCALRAM2 0x37 /* RF CAL RAM byte 2 */
|
||||
#define R38_MARGIN 0x38 /* Margin byte */
|
||||
#define R39_FMAX1 0x39 /* Fmax byte 1 */
|
||||
#define R3A_FMAX2 0x3a /* Fmax byte 2 */
|
||||
|
||||
#define TDA18218_NUM_REGS 59
|
||||
|
||||
struct tda18218_priv {
|
||||
struct tda18218_config *cfg;
|
||||
struct i2c_adapter *i2c;
|
||||
|
||||
u8 regs[TDA18218_NUM_REGS];
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user