513 lines
12 KiB
C
513 lines
12 KiB
C
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/*
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* mxl111sf-tuner.c - driver for the MaxLinear MXL111SF CMOS tuner
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*
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* Copyright (C) 2010-2014 Michael Krufky <mkrufky@linuxtv.org>
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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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#include "mxl111sf-tuner.h"
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#include "mxl111sf-phy.h"
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#include "mxl111sf-reg.h"
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/* debug */
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static int mxl111sf_tuner_debug;
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module_param_named(debug, mxl111sf_tuner_debug, int, 0644);
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MODULE_PARM_DESC(debug, "set debugging level (1=info (or-able)).");
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#define mxl_dbg(fmt, arg...) \
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if (mxl111sf_tuner_debug) \
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mxl_printk(KERN_DEBUG, fmt, ##arg)
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/* ------------------------------------------------------------------------ */
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struct mxl111sf_tuner_state {
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struct mxl111sf_state *mxl_state;
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const struct mxl111sf_tuner_config *cfg;
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enum mxl_if_freq if_freq;
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u32 frequency;
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u32 bandwidth;
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};
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static int mxl111sf_tuner_read_reg(struct mxl111sf_tuner_state *state,
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u8 addr, u8 *data)
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{
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return (state->cfg->read_reg) ?
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state->cfg->read_reg(state->mxl_state, addr, data) :
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-EINVAL;
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}
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static int mxl111sf_tuner_write_reg(struct mxl111sf_tuner_state *state,
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u8 addr, u8 data)
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{
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return (state->cfg->write_reg) ?
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state->cfg->write_reg(state->mxl_state, addr, data) :
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-EINVAL;
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}
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static int mxl111sf_tuner_program_regs(struct mxl111sf_tuner_state *state,
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struct mxl111sf_reg_ctrl_info *ctrl_reg_info)
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{
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return (state->cfg->program_regs) ?
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state->cfg->program_regs(state->mxl_state, ctrl_reg_info) :
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-EINVAL;
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}
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static int mxl1x1sf_tuner_top_master_ctrl(struct mxl111sf_tuner_state *state,
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int onoff)
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{
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return (state->cfg->top_master_ctrl) ?
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state->cfg->top_master_ctrl(state->mxl_state, onoff) :
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-EINVAL;
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}
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/* ------------------------------------------------------------------------ */
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static struct mxl111sf_reg_ctrl_info mxl_phy_tune_rf[] = {
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{0x1d, 0x7f, 0x00}, /* channel bandwidth section 1/2/3,
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DIG_MODEINDEX, _A, _CSF, */
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{0x1e, 0xff, 0x00}, /* channel frequency (lo and fractional) */
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{0x1f, 0xff, 0x00}, /* channel frequency (hi for integer portion) */
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{0, 0, 0}
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};
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/* ------------------------------------------------------------------------ */
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static struct mxl111sf_reg_ctrl_info *mxl111sf_calc_phy_tune_regs(u32 freq,
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u8 bw)
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{
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u8 filt_bw;
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/* set channel bandwidth */
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switch (bw) {
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case 0: /* ATSC */
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filt_bw = 25;
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break;
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case 1: /* QAM */
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filt_bw = 69;
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break;
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case 6:
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filt_bw = 21;
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break;
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case 7:
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filt_bw = 42;
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break;
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case 8:
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filt_bw = 63;
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break;
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default:
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pr_err("%s: invalid bandwidth setting!", __func__);
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return NULL;
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}
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/* calculate RF channel */
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freq /= 1000000;
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freq *= 64;
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#if 0
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/* do round */
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freq += 0.5;
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#endif
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/* set bandwidth */
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mxl_phy_tune_rf[0].data = filt_bw;
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/* set RF */
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mxl_phy_tune_rf[1].data = (freq & 0xff);
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mxl_phy_tune_rf[2].data = (freq >> 8) & 0xff;
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/* start tune */
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return mxl_phy_tune_rf;
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}
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static int mxl1x1sf_tuner_set_if_output_freq(struct mxl111sf_tuner_state *state)
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{
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int ret;
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u8 ctrl;
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#if 0
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u16 iffcw;
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u32 if_freq;
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#endif
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mxl_dbg("(IF polarity = %d, IF freq = 0x%02x)",
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state->cfg->invert_spectrum, state->cfg->if_freq);
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/* set IF polarity */
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ctrl = state->cfg->invert_spectrum;
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ctrl |= state->cfg->if_freq;
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ret = mxl111sf_tuner_write_reg(state, V6_TUNER_IF_SEL_REG, ctrl);
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if (mxl_fail(ret))
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goto fail;
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#if 0
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if_freq /= 1000000;
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/* do round */
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if_freq += 0.5;
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if (MXL_IF_LO == state->cfg->if_freq) {
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ctrl = 0x08;
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iffcw = (u16)(if_freq / (108 * 4096));
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} else if (MXL_IF_HI == state->cfg->if_freq) {
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ctrl = 0x08;
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iffcw = (u16)(if_freq / (216 * 4096));
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} else {
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ctrl = 0;
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iffcw = 0;
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}
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ctrl |= (iffcw >> 8);
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#endif
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ret = mxl111sf_tuner_read_reg(state, V6_TUNER_IF_FCW_BYP_REG, &ctrl);
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if (mxl_fail(ret))
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goto fail;
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ctrl &= 0xf0;
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ctrl |= 0x90;
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ret = mxl111sf_tuner_write_reg(state, V6_TUNER_IF_FCW_BYP_REG, ctrl);
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if (mxl_fail(ret))
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goto fail;
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#if 0
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ctrl = iffcw & 0x00ff;
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#endif
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ret = mxl111sf_tuner_write_reg(state, V6_TUNER_IF_FCW_REG, ctrl);
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if (mxl_fail(ret))
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goto fail;
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state->if_freq = state->cfg->if_freq;
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fail:
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return ret;
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}
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static int mxl1x1sf_tune_rf(struct dvb_frontend *fe, u32 freq, u8 bw)
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{
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struct mxl111sf_tuner_state *state = fe->tuner_priv;
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static struct mxl111sf_reg_ctrl_info *reg_ctrl_array;
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int ret;
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u8 mxl_mode;
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mxl_dbg("(freq = %d, bw = 0x%x)", freq, bw);
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/* stop tune */
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ret = mxl111sf_tuner_write_reg(state, START_TUNE_REG, 0);
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if (mxl_fail(ret))
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goto fail;
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/* check device mode */
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ret = mxl111sf_tuner_read_reg(state, MXL_MODE_REG, &mxl_mode);
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if (mxl_fail(ret))
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goto fail;
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/* Fill out registers for channel tune */
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reg_ctrl_array = mxl111sf_calc_phy_tune_regs(freq, bw);
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if (!reg_ctrl_array)
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return -EINVAL;
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ret = mxl111sf_tuner_program_regs(state, reg_ctrl_array);
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if (mxl_fail(ret))
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goto fail;
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if ((mxl_mode & MXL_DEV_MODE_MASK) == MXL_TUNER_MODE) {
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/* IF tuner mode only */
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mxl1x1sf_tuner_top_master_ctrl(state, 0);
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mxl1x1sf_tuner_top_master_ctrl(state, 1);
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mxl1x1sf_tuner_set_if_output_freq(state);
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}
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ret = mxl111sf_tuner_write_reg(state, START_TUNE_REG, 1);
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if (mxl_fail(ret))
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goto fail;
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if (state->cfg->ant_hunt)
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state->cfg->ant_hunt(fe);
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fail:
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return ret;
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}
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static int mxl1x1sf_tuner_get_lock_status(struct mxl111sf_tuner_state *state,
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int *rf_synth_lock,
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int *ref_synth_lock)
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{
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int ret;
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u8 data;
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*rf_synth_lock = 0;
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*ref_synth_lock = 0;
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ret = mxl111sf_tuner_read_reg(state, V6_RF_LOCK_STATUS_REG, &data);
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if (mxl_fail(ret))
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goto fail;
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*ref_synth_lock = ((data & 0x03) == 0x03) ? 1 : 0;
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*rf_synth_lock = ((data & 0x0c) == 0x0c) ? 1 : 0;
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fail:
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return ret;
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}
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#if 0
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static int mxl1x1sf_tuner_loop_thru_ctrl(struct mxl111sf_tuner_state *state,
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int onoff)
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{
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return mxl111sf_tuner_write_reg(state, V6_TUNER_LOOP_THRU_CTRL_REG,
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onoff ? 1 : 0);
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}
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#endif
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/* ------------------------------------------------------------------------ */
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static int mxl111sf_tuner_set_params(struct dvb_frontend *fe)
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{
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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u32 delsys = c->delivery_system;
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struct mxl111sf_tuner_state *state = fe->tuner_priv;
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int ret;
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u8 bw;
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mxl_dbg("()");
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switch (delsys) {
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case SYS_ATSC:
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case SYS_ATSCMH:
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bw = 0; /* ATSC */
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break;
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case SYS_DVBC_ANNEX_B:
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bw = 1; /* US CABLE */
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break;
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case SYS_DVBT:
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switch (c->bandwidth_hz) {
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case 6000000:
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bw = 6;
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break;
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case 7000000:
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bw = 7;
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break;
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case 8000000:
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bw = 8;
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break;
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default:
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pr_err("%s: bandwidth not set!", __func__);
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return -EINVAL;
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}
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break;
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default:
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pr_err("%s: modulation type not supported!", __func__);
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return -EINVAL;
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}
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ret = mxl1x1sf_tune_rf(fe, c->frequency, bw);
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if (mxl_fail(ret))
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goto fail;
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state->frequency = c->frequency;
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state->bandwidth = c->bandwidth_hz;
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fail:
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return ret;
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}
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/* ------------------------------------------------------------------------ */
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#if 0
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static int mxl111sf_tuner_init(struct dvb_frontend *fe)
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{
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struct mxl111sf_tuner_state *state = fe->tuner_priv;
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int ret;
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/* wake from standby handled by usb driver */
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return ret;
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}
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static int mxl111sf_tuner_sleep(struct dvb_frontend *fe)
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{
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struct mxl111sf_tuner_state *state = fe->tuner_priv;
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int ret;
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/* enter standby mode handled by usb driver */
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return ret;
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}
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#endif
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/* ------------------------------------------------------------------------ */
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static int mxl111sf_tuner_get_status(struct dvb_frontend *fe, u32 *status)
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{
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struct mxl111sf_tuner_state *state = fe->tuner_priv;
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int rf_locked, ref_locked, ret;
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*status = 0;
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ret = mxl1x1sf_tuner_get_lock_status(state, &rf_locked, &ref_locked);
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if (mxl_fail(ret))
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goto fail;
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mxl_info("%s%s", rf_locked ? "rf locked " : "",
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ref_locked ? "ref locked" : "");
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if ((rf_locked) || (ref_locked))
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*status |= TUNER_STATUS_LOCKED;
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fail:
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return ret;
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}
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static int mxl111sf_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
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{
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struct mxl111sf_tuner_state *state = fe->tuner_priv;
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u8 val1, val2;
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int ret;
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*strength = 0;
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ret = mxl111sf_tuner_write_reg(state, 0x00, 0x02);
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if (mxl_fail(ret))
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goto fail;
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ret = mxl111sf_tuner_read_reg(state, V6_DIG_RF_PWR_LSB_REG, &val1);
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if (mxl_fail(ret))
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goto fail;
|
||
|
|
ret = mxl111sf_tuner_read_reg(state, V6_DIG_RF_PWR_MSB_REG, &val2);
|
||
|
|
if (mxl_fail(ret))
|
||
|
|
goto fail;
|
||
|
|
|
||
|
|
*strength = val1 | ((val2 & 0x07) << 8);
|
||
|
|
fail:
|
||
|
|
ret = mxl111sf_tuner_write_reg(state, 0x00, 0x00);
|
||
|
|
mxl_fail(ret);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ------------------------------------------------------------------------ */
|
||
|
|
|
||
|
|
static int mxl111sf_tuner_get_frequency(struct dvb_frontend *fe, u32 *frequency)
|
||
|
|
{
|
||
|
|
struct mxl111sf_tuner_state *state = fe->tuner_priv;
|
||
|
|
*frequency = state->frequency;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int mxl111sf_tuner_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
|
||
|
|
{
|
||
|
|
struct mxl111sf_tuner_state *state = fe->tuner_priv;
|
||
|
|
*bandwidth = state->bandwidth;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int mxl111sf_tuner_get_if_frequency(struct dvb_frontend *fe,
|
||
|
|
u32 *frequency)
|
||
|
|
{
|
||
|
|
struct mxl111sf_tuner_state *state = fe->tuner_priv;
|
||
|
|
|
||
|
|
*frequency = 0;
|
||
|
|
|
||
|
|
switch (state->if_freq) {
|
||
|
|
case MXL_IF_4_0: /* 4.0 MHz */
|
||
|
|
*frequency = 4000000;
|
||
|
|
break;
|
||
|
|
case MXL_IF_4_5: /* 4.5 MHz */
|
||
|
|
*frequency = 4500000;
|
||
|
|
break;
|
||
|
|
case MXL_IF_4_57: /* 4.57 MHz */
|
||
|
|
*frequency = 4570000;
|
||
|
|
break;
|
||
|
|
case MXL_IF_5_0: /* 5.0 MHz */
|
||
|
|
*frequency = 5000000;
|
||
|
|
break;
|
||
|
|
case MXL_IF_5_38: /* 5.38 MHz */
|
||
|
|
*frequency = 5380000;
|
||
|
|
break;
|
||
|
|
case MXL_IF_6_0: /* 6.0 MHz */
|
||
|
|
*frequency = 6000000;
|
||
|
|
break;
|
||
|
|
case MXL_IF_6_28: /* 6.28 MHz */
|
||
|
|
*frequency = 6280000;
|
||
|
|
break;
|
||
|
|
case MXL_IF_7_2: /* 7.2 MHz */
|
||
|
|
*frequency = 7200000;
|
||
|
|
break;
|
||
|
|
case MXL_IF_35_25: /* 35.25 MHz */
|
||
|
|
*frequency = 35250000;
|
||
|
|
break;
|
||
|
|
case MXL_IF_36: /* 36 MHz */
|
||
|
|
*frequency = 36000000;
|
||
|
|
break;
|
||
|
|
case MXL_IF_36_15: /* 36.15 MHz */
|
||
|
|
*frequency = 36150000;
|
||
|
|
break;
|
||
|
|
case MXL_IF_44: /* 44 MHz */
|
||
|
|
*frequency = 44000000;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void mxl111sf_tuner_release(struct dvb_frontend *fe)
|
||
|
|
{
|
||
|
|
struct mxl111sf_tuner_state *state = fe->tuner_priv;
|
||
|
|
mxl_dbg("()");
|
||
|
|
kfree(state);
|
||
|
|
fe->tuner_priv = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
static const struct dvb_tuner_ops mxl111sf_tuner_tuner_ops = {
|
||
|
|
.info = {
|
||
|
|
.name = "MaxLinear MxL111SF",
|
||
|
|
#if 0
|
||
|
|
.frequency_min = ,
|
||
|
|
.frequency_max = ,
|
||
|
|
.frequency_step = ,
|
||
|
|
#endif
|
||
|
|
},
|
||
|
|
#if 0
|
||
|
|
.init = mxl111sf_tuner_init,
|
||
|
|
.sleep = mxl111sf_tuner_sleep,
|
||
|
|
#endif
|
||
|
|
.set_params = mxl111sf_tuner_set_params,
|
||
|
|
.get_status = mxl111sf_tuner_get_status,
|
||
|
|
.get_rf_strength = mxl111sf_get_rf_strength,
|
||
|
|
.get_frequency = mxl111sf_tuner_get_frequency,
|
||
|
|
.get_bandwidth = mxl111sf_tuner_get_bandwidth,
|
||
|
|
.get_if_frequency = mxl111sf_tuner_get_if_frequency,
|
||
|
|
.release = mxl111sf_tuner_release,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct dvb_frontend *mxl111sf_tuner_attach(struct dvb_frontend *fe,
|
||
|
|
struct mxl111sf_state *mxl_state,
|
||
|
|
const struct mxl111sf_tuner_config *cfg)
|
||
|
|
{
|
||
|
|
struct mxl111sf_tuner_state *state = NULL;
|
||
|
|
|
||
|
|
mxl_dbg("()");
|
||
|
|
|
||
|
|
state = kzalloc(sizeof(struct mxl111sf_tuner_state), GFP_KERNEL);
|
||
|
|
if (state == NULL)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
state->mxl_state = mxl_state;
|
||
|
|
state->cfg = cfg;
|
||
|
|
|
||
|
|
memcpy(&fe->ops.tuner_ops, &mxl111sf_tuner_tuner_ops,
|
||
|
|
sizeof(struct dvb_tuner_ops));
|
||
|
|
|
||
|
|
fe->tuner_priv = state;
|
||
|
|
return fe;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(mxl111sf_tuner_attach);
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("MaxLinear MxL111SF CMOS tuner driver");
|
||
|
|
MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
MODULE_VERSION("0.1");
|