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Diffstat (limited to 'drivers/media/dvb/frontends/lgdt3302.c')
-rw-r--r--drivers/media/dvb/frontends/lgdt3302.c607
1 files changed, 0 insertions, 607 deletions
diff --git a/drivers/media/dvb/frontends/lgdt3302.c b/drivers/media/dvb/frontends/lgdt3302.c
deleted file mode 100644
index c3b8d4e080b..00000000000
--- a/drivers/media/dvb/frontends/lgdt3302.c
+++ /dev/null
@@ -1,607 +0,0 @@
-/*
- * Support for LGDT3302 (DViCO FustionHDTV 3 Gold) - VSB/QAM
- *
- * Copyright (C) 2005 Wilson Michaels <wilsonmichaels@earthlink.net>
- *
- * Based on code from Kirk Lapray <kirk_lapray@bigfoot.com>
- * Copyright (C) 2005
- *
- * 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.
- *
- */
-
-/*
- * NOTES ABOUT THIS DRIVER
- *
- * This driver supports DViCO FusionHDTV 3 Gold under Linux.
- *
- * TODO:
- * BER and signal strength always return 0.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <asm/byteorder.h>
-
-#include "dvb_frontend.h"
-#include "dvb-pll.h"
-#include "lgdt3302_priv.h"
-#include "lgdt3302.h"
-
-static int debug = 0;
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug,"Turn on/off lgdt3302 frontend debugging (default:off).");
-#define dprintk(args...) \
-do { \
-if (debug) printk(KERN_DEBUG "lgdt3302: " args); \
-} while (0)
-
-struct lgdt3302_state
-{
- struct i2c_adapter* i2c;
- struct dvb_frontend_ops ops;
-
- /* Configuration settings */
- const struct lgdt3302_config* config;
-
- struct dvb_frontend frontend;
-
- /* Demodulator private data */
- fe_modulation_t current_modulation;
-
- /* Tuner private data */
- u32 current_frequency;
-};
-
-static int i2c_writebytes (struct lgdt3302_state* state,
- u8 addr, /* demod_address or pll_address */
- u8 *buf, /* data bytes to send */
- int len /* number of bytes to send */ )
-{
- u8 tmp[] = { buf[0], buf[1] };
- struct i2c_msg msg =
- { .addr = addr, .flags = 0, .buf = tmp, .len = 2 };
- int err;
- int i;
-
- for (i=1; i<len; i++) {
- tmp[1] = buf[i];
- if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
- printk(KERN_WARNING "lgdt3302: %s error (addr %02x <- %02x, err == %i)\n", __FUNCTION__, addr, buf[0], err);
- if (err < 0)
- return err;
- else
- return -EREMOTEIO;
- }
- tmp[0]++;
- }
- return 0;
-}
-
-#if 0
-static int i2c_readbytes (struct lgdt3302_state* state,
- u8 addr, /* demod_address or pll_address */
- u8 *buf, /* holds data bytes read */
- int len /* number of bytes to read */ )
-{
- struct i2c_msg msg =
- { .addr = addr, .flags = I2C_M_RD, .buf = buf, .len = len };
- int err;
-
- if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
- printk(KERN_WARNING "lgdt3302: %s error (addr %02x, err == %i)\n", __FUNCTION__, addr, err);
- return -EREMOTEIO;
- }
- return 0;
-}
-#endif
-
-/*
- * This routine writes the register (reg) to the demod bus
- * then reads the data returned for (len) bytes.
- */
-
-static u8 i2c_selectreadbytes (struct lgdt3302_state* state,
- enum I2C_REG reg, u8* buf, int len)
-{
- u8 wr [] = { reg };
- struct i2c_msg msg [] = {
- { .addr = state->config->demod_address,
- .flags = 0, .buf = wr, .len = 1 },
- { .addr = state->config->demod_address,
- .flags = I2C_M_RD, .buf = buf, .len = len },
- };
- int ret;
- ret = i2c_transfer(state->i2c, msg, 2);
- if (ret != 2) {
- printk(KERN_WARNING "lgdt3302: %s: addr 0x%02x select 0x%02x error (ret == %i)\n", __FUNCTION__, state->config->demod_address, reg, ret);
- } else {
- ret = 0;
- }
- return ret;
-}
-
-/* Software reset */
-int lgdt3302_SwReset(struct lgdt3302_state* state)
-{
- u8 ret;
- u8 reset[] = {
- IRQ_MASK,
- 0x00 /* bit 6 is active low software reset
- * bits 5-0 are 1 to mask interrupts */
- };
-
- ret = i2c_writebytes(state,
- state->config->demod_address,
- reset, sizeof(reset));
- if (ret == 0) {
- /* spec says reset takes 100 ns why wait */
- /* mdelay(100); */ /* keep low for 100mS */
- reset[1] = 0x7f; /* force reset high (inactive)
- * and unmask interrupts */
- ret = i2c_writebytes(state,
- state->config->demod_address,
- reset, sizeof(reset));
- }
- /* Spec does not indicate a need for this either */
- /*mdelay(5); */ /* wait 5 msec before doing more */
- return ret;
-}
-
-static int lgdt3302_init(struct dvb_frontend* fe)
-{
- /* Hardware reset is done using gpio[0] of cx23880x chip.
- * I'd like to do it here, but don't know how to find chip address.
- * cx88-cards.c arranges for the reset bit to be inactive (high).
- * Maybe there needs to be a callable function in cx88-core or
- * the caller of this function needs to do it. */
-
- dprintk("%s entered\n", __FUNCTION__);
- return lgdt3302_SwReset((struct lgdt3302_state*) fe->demodulator_priv);
-}
-
-static int lgdt3302_read_ber(struct dvb_frontend* fe, u32* ber)
-{
- *ber = 0; /* Dummy out for now */
- return 0;
-}
-
-static int lgdt3302_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
-{
- struct lgdt3302_state* state = (struct lgdt3302_state*) fe->demodulator_priv;
- u8 buf[2];
-
- i2c_selectreadbytes(state, PACKET_ERR_COUNTER1, buf, sizeof(buf));
-
- *ucblocks = (buf[0] << 8) | buf[1];
- return 0;
-}
-
-static int lgdt3302_set_parameters(struct dvb_frontend* fe,
- struct dvb_frontend_parameters *param)
-{
- struct lgdt3302_state* state =
- (struct lgdt3302_state*) fe->demodulator_priv;
-
- /* Use 50MHz parameter values from spec sheet since xtal is 50 */
- static u8 top_ctrl_cfg[] = { TOP_CONTROL, 0x03 };
- static u8 vsb_freq_cfg[] = { VSB_CARRIER_FREQ0, 0x00, 0x87, 0x8e, 0x01 };
- static u8 demux_ctrl_cfg[] = { DEMUX_CONTROL, 0xfb };
- static u8 agc_rf_cfg[] = { AGC_RF_BANDWIDTH0, 0x40, 0x93, 0x00 };
- static u8 agc_ctrl_cfg[] = { AGC_FUNC_CTRL2, 0xc6, 0x40 };
- static u8 agc_delay_cfg[] = { AGC_DELAY0, 0x07, 0x00, 0xfe };
- static u8 agc_loop_cfg[] = { AGC_LOOP_BANDWIDTH0, 0x08, 0x9a };
-
- /* Change only if we are actually changing the modulation */
- if (state->current_modulation != param->u.vsb.modulation) {
- switch(param->u.vsb.modulation) {
- case VSB_8:
- dprintk("%s: VSB_8 MODE\n", __FUNCTION__);
-
- /* Select VSB mode and serial MPEG interface */
- top_ctrl_cfg[1] = 0x07;
-
- /* Select ANT connector if supported by card */
- if (state->config->pll_rf_set)
- state->config->pll_rf_set(fe, 1);
- break;
-
- case QAM_64:
- dprintk("%s: QAM_64 MODE\n", __FUNCTION__);
-
- /* Select QAM_64 mode and serial MPEG interface */
- top_ctrl_cfg[1] = 0x04;
-
- /* Select CABLE connector if supported by card */
- if (state->config->pll_rf_set)
- state->config->pll_rf_set(fe, 0);
- break;
-
- case QAM_256:
- dprintk("%s: QAM_256 MODE\n", __FUNCTION__);
-
- /* Select QAM_256 mode and serial MPEG interface */
- top_ctrl_cfg[1] = 0x05;
-
- /* Select CABLE connector if supported by card */
- if (state->config->pll_rf_set)
- state->config->pll_rf_set(fe, 0);
- break;
- default:
- printk(KERN_WARNING "lgdt3302: %s: Modulation type(%d) UNSUPPORTED\n", __FUNCTION__, param->u.vsb.modulation);
- return -1;
- }
- /* Initializations common to all modes */
-
- /* Select the requested mode */
- i2c_writebytes(state, state->config->demod_address,
- top_ctrl_cfg, sizeof(top_ctrl_cfg));
-
- /* Change the value of IFBW[11:0]
- of AGC IF/RF loop filter bandwidth register */
- i2c_writebytes(state, state->config->demod_address,
- agc_rf_cfg, sizeof(agc_rf_cfg));
-
- /* Change the value of bit 6, 'nINAGCBY' and
- 'NSSEL[1:0] of ACG function control register 2 */
- /* Change the value of bit 6 'RFFIX'
- of AGC function control register 3 */
- i2c_writebytes(state, state->config->demod_address,
- agc_ctrl_cfg, sizeof(agc_ctrl_cfg));
-
- /* Change the TPCLK pin polarity
- data is valid on falling clock */
- i2c_writebytes(state, state->config->demod_address,
- demux_ctrl_cfg, sizeof(demux_ctrl_cfg));
-
- /* Change the value of NCOCTFV[25:0] of carrier
- recovery center frequency register */
- i2c_writebytes(state, state->config->demod_address,
- vsb_freq_cfg, sizeof(vsb_freq_cfg));
-
- /* Set the value of 'INLVTHD' register 0x2a/0x2c to 0x7fe */
- i2c_writebytes(state, state->config->demod_address,
- agc_delay_cfg, sizeof(agc_delay_cfg));
-
- /* Change the value of IAGCBW[15:8]
- of inner AGC loop filter bandwith */
- i2c_writebytes(state, state->config->demod_address,
- agc_loop_cfg, sizeof(agc_loop_cfg));
-
- state->config->set_ts_params(fe, 0);
- state->current_modulation = param->u.vsb.modulation;
- }
-
- /* Change only if we are actually changing the channel */
- if (state->current_frequency != param->frequency) {
- u8 buf[5];
-
- /* This must be done before the initialized msg is declared */
- state->config->pll_set(fe, param, buf);
-
- struct i2c_msg msg =
- { .addr = buf[0], .flags = 0, .buf = &buf[1], .len = 4 };
- int err;
-
- dprintk("%s: tuner at 0x%02x bytes: 0x%02x 0x%02x "
- "0x%02x 0x%02x\n", __FUNCTION__,
- buf[0],buf[1],buf[2],buf[3],buf[4]);
- if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
- printk(KERN_WARNING "lgdt3302: %s error (addr %02x <- %02x, err = %i)\n", __FUNCTION__, buf[0], buf[1], err);
- if (err < 0)
- return err;
- else
- return -EREMOTEIO;
- }
-#if 0
- /* Check the status of the tuner pll */
- i2c_readbytes(state, buf[0], &buf[1], 1);
- dprintk("%s: tuner status byte = 0x%02x\n", __FUNCTION__, buf[1]);
-#endif
- /* Update current frequency */
- state->current_frequency = param->frequency;
- }
- lgdt3302_SwReset(state);
- return 0;
-}
-
-static int lgdt3302_get_frontend(struct dvb_frontend* fe,
- struct dvb_frontend_parameters* param)
-{
- struct lgdt3302_state *state = fe->demodulator_priv;
- param->frequency = state->current_frequency;
- return 0;
-}
-
-static int lgdt3302_read_status(struct dvb_frontend* fe, fe_status_t* status)
-{
- struct lgdt3302_state* state = (struct lgdt3302_state*) fe->demodulator_priv;
- u8 buf[3];
-
- *status = 0; /* Reset status result */
-
- /*
- * You must set the Mask bits to 1 in the IRQ_MASK in order
- * to see that status bit in the IRQ_STATUS register.
- * This is done in SwReset();
- */
-
- /* AGC status register */
- i2c_selectreadbytes(state, AGC_STATUS, buf, 1);
- dprintk("%s: AGC_STATUS = 0x%02x\n", __FUNCTION__, buf[0]);
- if ((buf[0] & 0x0c) == 0x8){
- /* Test signal does not exist flag */
- /* as well as the AGC lock flag. */
- *status |= FE_HAS_SIGNAL;
- } else {
- /* Without a signal all other status bits are meaningless */
- return 0;
- }
-
- /* signal status */
- i2c_selectreadbytes(state, TOP_CONTROL, buf, sizeof(buf));
- dprintk("%s: TOP_CONTROL = 0x%02x, IRO_MASK = 0x%02x, IRQ_STATUS = 0x%02x\n", __FUNCTION__, buf[0], buf[1], buf[2]);
-
-#if 0
- /* Alternative method to check for a signal */
- /* using the SNR good/bad interrupts. */
- if ((buf[2] & 0x30) == 0x10)
- *status |= FE_HAS_SIGNAL;
-#endif
-
- /* sync status */
- if ((buf[2] & 0x03) == 0x01) {
- *status |= FE_HAS_SYNC;
- }
-
- /* FEC error status */
- if ((buf[2] & 0x0c) == 0x08) {
- *status |= FE_HAS_LOCK;
- *status |= FE_HAS_VITERBI;
- }
-
- /* Carrier Recovery Lock Status Register */
- i2c_selectreadbytes(state, CARRIER_LOCK, buf, 1);
- dprintk("%s: CARRIER_LOCK = 0x%02x\n", __FUNCTION__, buf[0]);
- switch (state->current_modulation) {
- case QAM_256:
- case QAM_64:
- /* Need to undestand why there are 3 lock levels here */
- if ((buf[0] & 0x07) == 0x07)
- *status |= FE_HAS_CARRIER;
- break;
- case VSB_8:
- if ((buf[0] & 0x80) == 0x80)
- *status |= FE_HAS_CARRIER;
- break;
- default:
- printk("KERN_WARNING lgdt3302: %s: Modulation set to unsupported value\n", __FUNCTION__);
- }
-
- return 0;
-}
-
-static int lgdt3302_read_signal_strength(struct dvb_frontend* fe, u16* strength)
-{
- /* not directly available. */
- return 0;
-}
-
-static int lgdt3302_read_snr(struct dvb_frontend* fe, u16* snr)
-{
-#ifdef SNR_IN_DB
- /*
- * Spec sheet shows formula for SNR_EQ = 10 log10(25 * 24**2 / noise)
- * and SNR_PH = 10 log10(25 * 32**2 / noise) for equalizer and phase tracker
- * respectively. The following tables are built on these formulas.
- * The usual definition is SNR = 20 log10(signal/noise)
- * If the specification is wrong the value retuned is 1/2 the actual SNR in db.
- *
- * This table is a an ordered list of noise values computed by the
- * formula from the spec sheet such that the index into the table
- * starting at 43 or 45 is the SNR value in db. There are duplicate noise
- * value entries at the beginning because the SNR varies more than
- * 1 db for a change of 1 digit in noise at very small values of noise.
- *
- * Examples from SNR_EQ table:
- * noise SNR
- * 0 43
- * 1 42
- * 2 39
- * 3 37
- * 4 36
- * 5 35
- * 6 34
- * 7 33
- * 8 33
- * 9 32
- * 10 32
- * 11 31
- * 12 31
- * 13 30
- */
-
- static const u32 SNR_EQ[] =
- { 1, 2, 2, 2, 3, 3, 4, 4, 5, 7,
- 9, 11, 13, 17, 21, 26, 33, 41, 52, 65,
- 81, 102, 129, 162, 204, 257, 323, 406, 511, 644,
- 810, 1020, 1284, 1616, 2035, 2561, 3224, 4059, 5110, 6433,
- 8098, 10195, 12835, 16158, 20341, 25608, 32238, 40585, 51094, 64323,
- 80978, 101945, 128341, 161571, 203406, 256073, 0x40000
- };
-
- static const u32 SNR_PH[] =
- { 1, 2, 2, 2, 3, 3, 4, 5, 6, 8,
- 10, 12, 15, 19, 23, 29, 37, 46, 58, 73,
- 91, 115, 144, 182, 229, 288, 362, 456, 574, 722,
- 909, 1144, 1440, 1813, 2282, 2873, 3617, 4553, 5732, 7216,
- 9084, 11436, 14396, 18124, 22817, 28724, 36161, 45524, 57312, 72151,
- 90833, 114351, 143960, 181235, 228161, 0x040000
- };
-
- static u8 buf[5];/* read data buffer */
- static u32 noise; /* noise value */
- static u32 snr_db; /* index into SNR_EQ[] */
- struct lgdt3302_state* state = (struct lgdt3302_state*) fe->demodulator_priv;
-
- /* read both equalizer and pase tracker noise data */
- i2c_selectreadbytes(state, EQPH_ERR0, buf, sizeof(buf));
-
- if (state->current_modulation == VSB_8) {
- /* Equalizer Mean-Square Error Register for VSB */
- noise = ((buf[0] & 7) << 16) | (buf[1] << 8) | buf[2];
-
- /*
- * Look up noise value in table.
- * A better search algorithm could be used...
- * watch out there are duplicate entries.
- */
- for (snr_db = 0; snr_db < sizeof(SNR_EQ); snr_db++) {
- if (noise < SNR_EQ[snr_db]) {
- *snr = 43 - snr_db;
- break;
- }
- }
- } else {
- /* Phase Tracker Mean-Square Error Register for QAM */
- noise = ((buf[0] & 7<<3) << 13) | (buf[3] << 8) | buf[4];
-
- /* Look up noise value in table. */
- for (snr_db = 0; snr_db < sizeof(SNR_PH); snr_db++) {
- if (noise < SNR_PH[snr_db]) {
- *snr = 45 - snr_db;
- break;
- }
- }
- }
-#else
- /* Return the raw noise value */
- static u8 buf[5];/* read data buffer */
- static u32 noise; /* noise value */
- struct lgdt3302_state* state = (struct lgdt3302_state*) fe->demodulator_priv;
-
- /* read both equalizer and pase tracker noise data */
- i2c_selectreadbytes(state, EQPH_ERR0, buf, sizeof(buf));
-
- if (state->current_modulation == VSB_8) {
- /* Equalizer Mean-Square Error Register for VSB */
- noise = ((buf[0] & 7) << 16) | (buf[1] << 8) | buf[2];
- } else {
- /* Phase Tracker Mean-Square Error Register for QAM */
- noise = ((buf[0] & 7<<3) << 13) | (buf[3] << 8) | buf[4];
- }
-
- /* Small values for noise mean signal is better so invert noise */
- /* Noise is 19 bit value so discard 3 LSB*/
- *snr = ~noise>>3;
-#endif
-
- dprintk("%s: noise = 0x%05x, snr = %idb\n",__FUNCTION__, noise, *snr);
-
- return 0;
-}
-
-static int lgdt3302_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fe_tune_settings)
-{
- /* I have no idea about this - it may not be needed */
- fe_tune_settings->min_delay_ms = 500;
- fe_tune_settings->step_size = 0;
- fe_tune_settings->max_drift = 0;
- return 0;
-}
-
-static void lgdt3302_release(struct dvb_frontend* fe)
-{
- struct lgdt3302_state* state = (struct lgdt3302_state*) fe->demodulator_priv;
- kfree(state);
-}
-
-static struct dvb_frontend_ops lgdt3302_ops;
-
-struct dvb_frontend* lgdt3302_attach(const struct lgdt3302_config* config,
- struct i2c_adapter* i2c)
-{
- struct lgdt3302_state* state = NULL;
- u8 buf[1];
-
- /* Allocate memory for the internal state */
- state = (struct lgdt3302_state*) kmalloc(sizeof(struct lgdt3302_state), GFP_KERNEL);
- if (state == NULL)
- goto error;
- memset(state,0,sizeof(*state));
-
- /* Setup the state */
- state->config = config;
- state->i2c = i2c;
- memcpy(&state->ops, &lgdt3302_ops, sizeof(struct dvb_frontend_ops));
- /* Verify communication with demod chip */
- if (i2c_selectreadbytes(state, 2, buf, 1))
- goto error;
-
- state->current_frequency = -1;
- state->current_modulation = -1;
-
- /* Create dvb_frontend */
- state->frontend.ops = &state->ops;
- state->frontend.demodulator_priv = state;
- return &state->frontend;
-
-error:
- if (state)
- kfree(state);
- dprintk("%s: ERROR\n",__FUNCTION__);
- return NULL;
-}
-
-static struct dvb_frontend_ops lgdt3302_ops = {
- .info = {
- .name= "LG Electronics LGDT3302 VSB/QAM Frontend",
- .type = FE_ATSC,
- .frequency_min= 54000000,
- .frequency_max= 858000000,
- .frequency_stepsize= 62500,
- /* Symbol rate is for all VSB modes need to check QAM */
- .symbol_rate_min = 10762000,
- .symbol_rate_max = 10762000,
- .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
- },
- .init = lgdt3302_init,
- .set_frontend = lgdt3302_set_parameters,
- .get_frontend = lgdt3302_get_frontend,
- .get_tune_settings = lgdt3302_get_tune_settings,
- .read_status = lgdt3302_read_status,
- .read_ber = lgdt3302_read_ber,
- .read_signal_strength = lgdt3302_read_signal_strength,
- .read_snr = lgdt3302_read_snr,
- .read_ucblocks = lgdt3302_read_ucblocks,
- .release = lgdt3302_release,
-};
-
-MODULE_DESCRIPTION("LGDT3302 [DViCO FusionHDTV 3 Gold] (ATSC 8VSB & ITU-T J.83 AnnexB 64/256 QAM) Demodulator Driver");
-MODULE_AUTHOR("Wilson Michaels");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(lgdt3302_attach);
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * compile-command: "make DVB=1"
- * End:
- */
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