| /* |
| tda18271-common.c - driver for the Philips / NXP TDA18271 silicon tuner |
| |
| Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org> |
| |
| 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. |
| */ |
| |
| #include "tda18271-priv.h" |
| |
| static int tda18271_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| enum tda18271_i2c_gate gate; |
| int ret = 0; |
| |
| switch (priv->gate) { |
| case TDA18271_GATE_DIGITAL: |
| case TDA18271_GATE_ANALOG: |
| gate = priv->gate; |
| break; |
| case TDA18271_GATE_AUTO: |
| default: |
| switch (priv->mode) { |
| case TDA18271_DIGITAL: |
| gate = TDA18271_GATE_DIGITAL; |
| break; |
| case TDA18271_ANALOG: |
| default: |
| gate = TDA18271_GATE_ANALOG; |
| break; |
| } |
| } |
| |
| switch (gate) { |
| case TDA18271_GATE_ANALOG: |
| if (fe->ops.analog_ops.i2c_gate_ctrl) |
| ret = fe->ops.analog_ops.i2c_gate_ctrl(fe, enable); |
| break; |
| case TDA18271_GATE_DIGITAL: |
| if (fe->ops.i2c_gate_ctrl) |
| ret = fe->ops.i2c_gate_ctrl(fe, enable); |
| break; |
| default: |
| ret = -EINVAL; |
| break; |
| } |
| |
| return ret; |
| }; |
| |
| /*---------------------------------------------------------------------*/ |
| |
| static void tda18271_dump_regs(struct dvb_frontend *fe, int extended) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| |
| tda_reg("=== TDA18271 REG DUMP ===\n"); |
| tda_reg("ID_BYTE = 0x%02x\n", 0xff & regs[R_ID]); |
| tda_reg("THERMO_BYTE = 0x%02x\n", 0xff & regs[R_TM]); |
| tda_reg("POWER_LEVEL_BYTE = 0x%02x\n", 0xff & regs[R_PL]); |
| tda_reg("EASY_PROG_BYTE_1 = 0x%02x\n", 0xff & regs[R_EP1]); |
| tda_reg("EASY_PROG_BYTE_2 = 0x%02x\n", 0xff & regs[R_EP2]); |
| tda_reg("EASY_PROG_BYTE_3 = 0x%02x\n", 0xff & regs[R_EP3]); |
| tda_reg("EASY_PROG_BYTE_4 = 0x%02x\n", 0xff & regs[R_EP4]); |
| tda_reg("EASY_PROG_BYTE_5 = 0x%02x\n", 0xff & regs[R_EP5]); |
| tda_reg("CAL_POST_DIV_BYTE = 0x%02x\n", 0xff & regs[R_CPD]); |
| tda_reg("CAL_DIV_BYTE_1 = 0x%02x\n", 0xff & regs[R_CD1]); |
| tda_reg("CAL_DIV_BYTE_2 = 0x%02x\n", 0xff & regs[R_CD2]); |
| tda_reg("CAL_DIV_BYTE_3 = 0x%02x\n", 0xff & regs[R_CD3]); |
| tda_reg("MAIN_POST_DIV_BYTE = 0x%02x\n", 0xff & regs[R_MPD]); |
| tda_reg("MAIN_DIV_BYTE_1 = 0x%02x\n", 0xff & regs[R_MD1]); |
| tda_reg("MAIN_DIV_BYTE_2 = 0x%02x\n", 0xff & regs[R_MD2]); |
| tda_reg("MAIN_DIV_BYTE_3 = 0x%02x\n", 0xff & regs[R_MD3]); |
| |
| /* only dump extended regs if DBG_ADV is set */ |
| if (!(tda18271_debug & DBG_ADV)) |
| return; |
| |
| /* W indicates write-only registers. |
| * Register dump for write-only registers shows last value written. */ |
| |
| tda_reg("EXTENDED_BYTE_1 = 0x%02x\n", 0xff & regs[R_EB1]); |
| tda_reg("EXTENDED_BYTE_2 = 0x%02x\n", 0xff & regs[R_EB2]); |
| tda_reg("EXTENDED_BYTE_3 = 0x%02x\n", 0xff & regs[R_EB3]); |
| tda_reg("EXTENDED_BYTE_4 = 0x%02x\n", 0xff & regs[R_EB4]); |
| tda_reg("EXTENDED_BYTE_5 = 0x%02x\n", 0xff & regs[R_EB5]); |
| tda_reg("EXTENDED_BYTE_6 = 0x%02x\n", 0xff & regs[R_EB6]); |
| tda_reg("EXTENDED_BYTE_7 = 0x%02x\n", 0xff & regs[R_EB7]); |
| tda_reg("EXTENDED_BYTE_8 = 0x%02x\n", 0xff & regs[R_EB8]); |
| tda_reg("EXTENDED_BYTE_9 W = 0x%02x\n", 0xff & regs[R_EB9]); |
| tda_reg("EXTENDED_BYTE_10 = 0x%02x\n", 0xff & regs[R_EB10]); |
| tda_reg("EXTENDED_BYTE_11 = 0x%02x\n", 0xff & regs[R_EB11]); |
| tda_reg("EXTENDED_BYTE_12 = 0x%02x\n", 0xff & regs[R_EB12]); |
| tda_reg("EXTENDED_BYTE_13 = 0x%02x\n", 0xff & regs[R_EB13]); |
| tda_reg("EXTENDED_BYTE_14 = 0x%02x\n", 0xff & regs[R_EB14]); |
| tda_reg("EXTENDED_BYTE_15 = 0x%02x\n", 0xff & regs[R_EB15]); |
| tda_reg("EXTENDED_BYTE_16 W = 0x%02x\n", 0xff & regs[R_EB16]); |
| tda_reg("EXTENDED_BYTE_17 W = 0x%02x\n", 0xff & regs[R_EB17]); |
| tda_reg("EXTENDED_BYTE_18 = 0x%02x\n", 0xff & regs[R_EB18]); |
| tda_reg("EXTENDED_BYTE_19 W = 0x%02x\n", 0xff & regs[R_EB19]); |
| tda_reg("EXTENDED_BYTE_20 W = 0x%02x\n", 0xff & regs[R_EB20]); |
| tda_reg("EXTENDED_BYTE_21 = 0x%02x\n", 0xff & regs[R_EB21]); |
| tda_reg("EXTENDED_BYTE_22 = 0x%02x\n", 0xff & regs[R_EB22]); |
| tda_reg("EXTENDED_BYTE_23 = 0x%02x\n", 0xff & regs[R_EB23]); |
| } |
| |
| int tda18271_read_regs(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| unsigned char buf = 0x00; |
| int ret; |
| struct i2c_msg msg[] = { |
| { .addr = priv->i2c_props.addr, .flags = 0, |
| .buf = &buf, .len = 1 }, |
| { .addr = priv->i2c_props.addr, .flags = I2C_M_RD, |
| .buf = regs, .len = 16 } |
| }; |
| |
| tda18271_i2c_gate_ctrl(fe, 1); |
| |
| /* read all registers */ |
| ret = i2c_transfer(priv->i2c_props.adap, msg, 2); |
| |
| tda18271_i2c_gate_ctrl(fe, 0); |
| |
| if (ret != 2) |
| tda_err("ERROR: i2c_transfer returned: %d\n", ret); |
| |
| if (tda18271_debug & DBG_REG) |
| tda18271_dump_regs(fe, 0); |
| |
| return (ret == 2 ? 0 : ret); |
| } |
| |
| int tda18271_read_extended(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| unsigned char regdump[TDA18271_NUM_REGS]; |
| unsigned char buf = 0x00; |
| int ret, i; |
| struct i2c_msg msg[] = { |
| { .addr = priv->i2c_props.addr, .flags = 0, |
| .buf = &buf, .len = 1 }, |
| { .addr = priv->i2c_props.addr, .flags = I2C_M_RD, |
| .buf = regdump, .len = TDA18271_NUM_REGS } |
| }; |
| |
| tda18271_i2c_gate_ctrl(fe, 1); |
| |
| /* read all registers */ |
| ret = i2c_transfer(priv->i2c_props.adap, msg, 2); |
| |
| tda18271_i2c_gate_ctrl(fe, 0); |
| |
| if (ret != 2) |
| tda_err("ERROR: i2c_transfer returned: %d\n", ret); |
| |
| for (i = 0; i < TDA18271_NUM_REGS; i++) { |
| /* don't update write-only registers */ |
| if ((i != R_EB9) && |
| (i != R_EB16) && |
| (i != R_EB17) && |
| (i != R_EB19) && |
| (i != R_EB20)) |
| regs[i] = regdump[i]; |
| } |
| |
| if (tda18271_debug & DBG_REG) |
| tda18271_dump_regs(fe, 1); |
| |
| return (ret == 2 ? 0 : ret); |
| } |
| |
| int tda18271_write_regs(struct dvb_frontend *fe, int idx, int len) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| unsigned char buf[TDA18271_NUM_REGS + 1]; |
| struct i2c_msg msg = { .addr = priv->i2c_props.addr, .flags = 0, |
| .buf = buf, .len = len + 1 }; |
| int i, ret; |
| |
| BUG_ON((len == 0) || (idx + len > sizeof(buf))); |
| |
| buf[0] = idx; |
| for (i = 1; i <= len; i++) |
| buf[i] = regs[idx - 1 + i]; |
| |
| tda18271_i2c_gate_ctrl(fe, 1); |
| |
| /* write registers */ |
| ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); |
| |
| tda18271_i2c_gate_ctrl(fe, 0); |
| |
| if (ret != 1) |
| tda_err("ERROR: i2c_transfer returned: %d\n", ret); |
| |
| return (ret == 1 ? 0 : ret); |
| } |
| |
| /*---------------------------------------------------------------------*/ |
| |
| int tda18271_init_regs(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| |
| tda_dbg("initializing registers for device @ %d-%04x\n", |
| i2c_adapter_id(priv->i2c_props.adap), |
| priv->i2c_props.addr); |
| |
| /* initialize registers */ |
| switch (priv->id) { |
| case TDA18271HDC1: |
| regs[R_ID] = 0x83; |
| break; |
| case TDA18271HDC2: |
| regs[R_ID] = 0x84; |
| break; |
| }; |
| |
| regs[R_TM] = 0x08; |
| regs[R_PL] = 0x80; |
| regs[R_EP1] = 0xc6; |
| regs[R_EP2] = 0xdf; |
| regs[R_EP3] = 0x16; |
| regs[R_EP4] = 0x60; |
| regs[R_EP5] = 0x80; |
| regs[R_CPD] = 0x80; |
| regs[R_CD1] = 0x00; |
| regs[R_CD2] = 0x00; |
| regs[R_CD3] = 0x00; |
| regs[R_MPD] = 0x00; |
| regs[R_MD1] = 0x00; |
| regs[R_MD2] = 0x00; |
| regs[R_MD3] = 0x00; |
| |
| switch (priv->id) { |
| case TDA18271HDC1: |
| regs[R_EB1] = 0xff; |
| break; |
| case TDA18271HDC2: |
| regs[R_EB1] = 0xfc; |
| break; |
| }; |
| |
| regs[R_EB2] = 0x01; |
| regs[R_EB3] = 0x84; |
| regs[R_EB4] = 0x41; |
| regs[R_EB5] = 0x01; |
| regs[R_EB6] = 0x84; |
| regs[R_EB7] = 0x40; |
| regs[R_EB8] = 0x07; |
| regs[R_EB9] = 0x00; |
| regs[R_EB10] = 0x00; |
| regs[R_EB11] = 0x96; |
| |
| switch (priv->id) { |
| case TDA18271HDC1: |
| regs[R_EB12] = 0x0f; |
| break; |
| case TDA18271HDC2: |
| regs[R_EB12] = 0x33; |
| break; |
| }; |
| |
| regs[R_EB13] = 0xc1; |
| regs[R_EB14] = 0x00; |
| regs[R_EB15] = 0x8f; |
| regs[R_EB16] = 0x00; |
| regs[R_EB17] = 0x00; |
| |
| switch (priv->id) { |
| case TDA18271HDC1: |
| regs[R_EB18] = 0x00; |
| break; |
| case TDA18271HDC2: |
| regs[R_EB18] = 0x8c; |
| break; |
| }; |
| |
| regs[R_EB19] = 0x00; |
| regs[R_EB20] = 0x20; |
| |
| switch (priv->id) { |
| case TDA18271HDC1: |
| regs[R_EB21] = 0x33; |
| break; |
| case TDA18271HDC2: |
| regs[R_EB21] = 0xb3; |
| break; |
| }; |
| |
| regs[R_EB22] = 0x48; |
| regs[R_EB23] = 0xb0; |
| |
| tda18271_write_regs(fe, 0x00, TDA18271_NUM_REGS); |
| |
| /* setup agc1 gain */ |
| regs[R_EB17] = 0x00; |
| tda18271_write_regs(fe, R_EB17, 1); |
| regs[R_EB17] = 0x03; |
| tda18271_write_regs(fe, R_EB17, 1); |
| regs[R_EB17] = 0x43; |
| tda18271_write_regs(fe, R_EB17, 1); |
| regs[R_EB17] = 0x4c; |
| tda18271_write_regs(fe, R_EB17, 1); |
| |
| /* setup agc2 gain */ |
| if ((priv->id) == TDA18271HDC1) { |
| regs[R_EB20] = 0xa0; |
| tda18271_write_regs(fe, R_EB20, 1); |
| regs[R_EB20] = 0xa7; |
| tda18271_write_regs(fe, R_EB20, 1); |
| regs[R_EB20] = 0xe7; |
| tda18271_write_regs(fe, R_EB20, 1); |
| regs[R_EB20] = 0xec; |
| tda18271_write_regs(fe, R_EB20, 1); |
| } |
| |
| /* image rejection calibration */ |
| |
| /* low-band */ |
| regs[R_EP3] = 0x1f; |
| regs[R_EP4] = 0x66; |
| regs[R_EP5] = 0x81; |
| regs[R_CPD] = 0xcc; |
| regs[R_CD1] = 0x6c; |
| regs[R_CD2] = 0x00; |
| regs[R_CD3] = 0x00; |
| regs[R_MPD] = 0xcd; |
| regs[R_MD1] = 0x77; |
| regs[R_MD2] = 0x08; |
| regs[R_MD3] = 0x00; |
| |
| switch (priv->id) { |
| case TDA18271HDC1: |
| tda18271_write_regs(fe, R_EP3, 11); |
| break; |
| case TDA18271HDC2: |
| tda18271_write_regs(fe, R_EP3, 12); |
| break; |
| }; |
| |
| if ((priv->id) == TDA18271HDC2) { |
| /* main pll cp source on */ |
| regs[R_EB4] = 0x61; |
| tda18271_write_regs(fe, R_EB4, 1); |
| msleep(1); |
| |
| /* main pll cp source off */ |
| regs[R_EB4] = 0x41; |
| tda18271_write_regs(fe, R_EB4, 1); |
| } |
| |
| msleep(5); /* pll locking */ |
| |
| /* launch detector */ |
| tda18271_write_regs(fe, R_EP1, 1); |
| msleep(5); /* wanted low measurement */ |
| |
| regs[R_EP5] = 0x85; |
| regs[R_CPD] = 0xcb; |
| regs[R_CD1] = 0x66; |
| regs[R_CD2] = 0x70; |
| |
| tda18271_write_regs(fe, R_EP3, 7); |
| msleep(5); /* pll locking */ |
| |
| /* launch optimization algorithm */ |
| tda18271_write_regs(fe, R_EP2, 1); |
| msleep(30); /* image low optimization completion */ |
| |
| /* mid-band */ |
| regs[R_EP5] = 0x82; |
| regs[R_CPD] = 0xa8; |
| regs[R_CD2] = 0x00; |
| regs[R_MPD] = 0xa9; |
| regs[R_MD1] = 0x73; |
| regs[R_MD2] = 0x1a; |
| |
| tda18271_write_regs(fe, R_EP3, 11); |
| msleep(5); /* pll locking */ |
| |
| tda18271_write_regs(fe, R_EP1, 1); |
| msleep(5); /* wanted mid measurement */ |
| |
| regs[R_EP5] = 0x86; |
| regs[R_CPD] = 0xa8; |
| regs[R_CD1] = 0x66; |
| regs[R_CD2] = 0xa0; |
| |
| tda18271_write_regs(fe, R_EP3, 7); |
| msleep(5); /* pll locking */ |
| |
| /* launch optimization algorithm */ |
| tda18271_write_regs(fe, R_EP2, 1); |
| msleep(30); /* image mid optimization completion */ |
| |
| /* high-band */ |
| regs[R_EP5] = 0x83; |
| regs[R_CPD] = 0x98; |
| regs[R_CD1] = 0x65; |
| regs[R_CD2] = 0x00; |
| regs[R_MPD] = 0x99; |
| regs[R_MD1] = 0x71; |
| regs[R_MD2] = 0xcd; |
| |
| tda18271_write_regs(fe, R_EP3, 11); |
| msleep(5); /* pll locking */ |
| |
| /* launch detector */ |
| tda18271_write_regs(fe, R_EP1, 1); |
| msleep(5); /* wanted high measurement */ |
| |
| regs[R_EP5] = 0x87; |
| regs[R_CD1] = 0x65; |
| regs[R_CD2] = 0x50; |
| |
| tda18271_write_regs(fe, R_EP3, 7); |
| msleep(5); /* pll locking */ |
| |
| /* launch optimization algorithm */ |
| tda18271_write_regs(fe, R_EP2, 1); |
| msleep(30); /* image high optimization completion */ |
| |
| /* return to normal mode */ |
| regs[R_EP4] = 0x64; |
| tda18271_write_regs(fe, R_EP4, 1); |
| |
| /* synchronize */ |
| tda18271_write_regs(fe, R_EP1, 1); |
| |
| return 0; |
| } |
| |
| /*---------------------------------------------------------------------*/ |
| |
| /* |
| * Standby modes, EP3 [7:5] |
| * |
| * | SM || SM_LT || SM_XT || mode description |
| * |=====\\=======\\=======\\=================================== |
| * | 0 || 0 || 0 || normal mode |
| * |-----||-------||-------||----------------------------------- |
| * | || || || standby mode w/ slave tuner output |
| * | 1 || 0 || 0 || & loop thru & xtal oscillator on |
| * |-----||-------||-------||----------------------------------- |
| * | 1 || 1 || 0 || standby mode w/ xtal oscillator on |
| * |-----||-------||-------||----------------------------------- |
| * | 1 || 1 || 1 || power off |
| * |
| */ |
| |
| int tda18271_set_standby_mode(struct dvb_frontend *fe, |
| int sm, int sm_lt, int sm_xt) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| |
| tda_dbg("sm = %d, sm_lt = %d, sm_xt = %d\n", sm, sm_lt, sm_xt); |
| |
| regs[R_EP3] &= ~0xe0; /* clear sm, sm_lt, sm_xt */ |
| regs[R_EP3] |= sm ? (1 << 7) : 0 | |
| sm_lt ? (1 << 6) : 0 | |
| sm_xt ? (1 << 5) : 0; |
| |
| tda18271_write_regs(fe, R_EP3, 1); |
| |
| return 0; |
| } |
| |
| /*---------------------------------------------------------------------*/ |
| |
| int tda18271_calc_main_pll(struct dvb_frontend *fe, u32 freq) |
| { |
| /* sets main post divider & divider bytes, but does not write them */ |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| u8 d, pd; |
| u32 div; |
| |
| int ret = tda18271_lookup_pll_map(fe, MAIN_PLL, &freq, &pd, &d); |
| if (ret < 0) |
| goto fail; |
| |
| regs[R_MPD] = (0x77 & pd); |
| |
| switch (priv->mode) { |
| case TDA18271_ANALOG: |
| regs[R_MPD] &= ~0x08; |
| break; |
| case TDA18271_DIGITAL: |
| regs[R_MPD] |= 0x08; |
| break; |
| } |
| |
| div = ((d * (freq / 1000)) << 7) / 125; |
| |
| regs[R_MD1] = 0x7f & (div >> 16); |
| regs[R_MD2] = 0xff & (div >> 8); |
| regs[R_MD3] = 0xff & div; |
| fail: |
| return ret; |
| } |
| |
| int tda18271_calc_cal_pll(struct dvb_frontend *fe, u32 freq) |
| { |
| /* sets cal post divider & divider bytes, but does not write them */ |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| u8 d, pd; |
| u32 div; |
| |
| int ret = tda18271_lookup_pll_map(fe, CAL_PLL, &freq, &pd, &d); |
| if (ret < 0) |
| goto fail; |
| |
| regs[R_CPD] = pd; |
| |
| div = ((d * (freq / 1000)) << 7) / 125; |
| |
| regs[R_CD1] = 0x7f & (div >> 16); |
| regs[R_CD2] = 0xff & (div >> 8); |
| regs[R_CD3] = 0xff & div; |
| fail: |
| return ret; |
| } |
| |
| /*---------------------------------------------------------------------*/ |
| |
| int tda18271_calc_bp_filter(struct dvb_frontend *fe, u32 *freq) |
| { |
| /* sets bp filter bits, but does not write them */ |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| u8 val; |
| |
| int ret = tda18271_lookup_map(fe, BP_FILTER, freq, &val); |
| if (ret < 0) |
| goto fail; |
| |
| regs[R_EP1] &= ~0x07; /* clear bp filter bits */ |
| regs[R_EP1] |= (0x07 & val); |
| fail: |
| return ret; |
| } |
| |
| int tda18271_calc_km(struct dvb_frontend *fe, u32 *freq) |
| { |
| /* sets K & M bits, but does not write them */ |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| u8 val; |
| |
| int ret = tda18271_lookup_map(fe, RF_CAL_KMCO, freq, &val); |
| if (ret < 0) |
| goto fail; |
| |
| regs[R_EB13] &= ~0x7c; /* clear k & m bits */ |
| regs[R_EB13] |= (0x7c & val); |
| fail: |
| return ret; |
| } |
| |
| int tda18271_calc_rf_band(struct dvb_frontend *fe, u32 *freq) |
| { |
| /* sets rf band bits, but does not write them */ |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| u8 val; |
| |
| int ret = tda18271_lookup_map(fe, RF_BAND, freq, &val); |
| if (ret < 0) |
| goto fail; |
| |
| regs[R_EP2] &= ~0xe0; /* clear rf band bits */ |
| regs[R_EP2] |= (0xe0 & (val << 5)); |
| fail: |
| return ret; |
| } |
| |
| int tda18271_calc_gain_taper(struct dvb_frontend *fe, u32 *freq) |
| { |
| /* sets gain taper bits, but does not write them */ |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| u8 val; |
| |
| int ret = tda18271_lookup_map(fe, GAIN_TAPER, freq, &val); |
| if (ret < 0) |
| goto fail; |
| |
| regs[R_EP2] &= ~0x1f; /* clear gain taper bits */ |
| regs[R_EP2] |= (0x1f & val); |
| fail: |
| return ret; |
| } |
| |
| int tda18271_calc_ir_measure(struct dvb_frontend *fe, u32 *freq) |
| { |
| /* sets IR Meas bits, but does not write them */ |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| u8 val; |
| |
| int ret = tda18271_lookup_map(fe, IR_MEASURE, freq, &val); |
| if (ret < 0) |
| goto fail; |
| |
| regs[R_EP5] &= ~0x07; |
| regs[R_EP5] |= (0x07 & val); |
| fail: |
| return ret; |
| } |
| |
| int tda18271_calc_rf_cal(struct dvb_frontend *fe, u32 *freq) |
| { |
| /* sets rf cal byte (RFC_Cprog), but does not write it */ |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| u8 val; |
| |
| tda18271_lookup_map(fe, RF_CAL, freq, &val); |
| |
| regs[R_EB14] = val; |
| |
| return 0; |
| } |
| |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-basic-offset: 8 |
| * End: |
| */ |
