diff options
Diffstat (limited to 'drivers/media/dvb-frontends/cx24116.c')
| -rw-r--r-- | drivers/media/dvb-frontends/cx24116.c | 1508 |
1 files changed, 1508 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/cx24116.c b/drivers/media/dvb-frontends/cx24116.c new file mode 100644 index 000000000000..b48879186537 --- /dev/null +++ b/drivers/media/dvb-frontends/cx24116.c @@ -0,0 +1,1508 @@ +/* + Conexant cx24116/cx24118 - DVBS/S2 Satellite demod/tuner driver + + Copyright (C) 2006-2008 Steven Toth <stoth@hauppauge.com> + Copyright (C) 2006-2007 Georg Acher + Copyright (C) 2007-2008 Darron Broad + March 2007 + Fixed some bugs. + Added diseqc support. + Added corrected signal strength support. + August 2007 + Sync with legacy version. + Some clean ups. + Copyright (C) 2008 Igor Liplianin + September, 9th 2008 + Fixed locking on high symbol rates (>30000). + Implement MPEG initialization parameter. + January, 17th 2009 + Fill set_voltage with actually control voltage code. + Correct set tone to not affect voltage. + + 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 <linux/slab.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/firmware.h> + +#include "dvb_frontend.h" +#include "cx24116.h" + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)"); + +#define dprintk(args...) \ + do { \ + if (debug) \ + printk(KERN_INFO "cx24116: " args); \ + } while (0) + +#define CX24116_DEFAULT_FIRMWARE "dvb-fe-cx24116.fw" +#define CX24116_SEARCH_RANGE_KHZ 5000 + +/* known registers */ +#define CX24116_REG_COMMAND (0x00) /* command args 0x00..0x1e */ +#define CX24116_REG_EXECUTE (0x1f) /* execute command */ +#define CX24116_REG_MAILBOX (0x96) /* FW or multipurpose mailbox? */ +#define CX24116_REG_RESET (0x20) /* reset status > 0 */ +#define CX24116_REG_SIGNAL (0x9e) /* signal low */ +#define CX24116_REG_SSTATUS (0x9d) /* signal high / status */ +#define CX24116_REG_QUALITY8 (0xa3) +#define CX24116_REG_QSTATUS (0xbc) +#define CX24116_REG_QUALITY0 (0xd5) +#define CX24116_REG_BER0 (0xc9) +#define CX24116_REG_BER8 (0xc8) +#define CX24116_REG_BER16 (0xc7) +#define CX24116_REG_BER24 (0xc6) +#define CX24116_REG_UCB0 (0xcb) +#define CX24116_REG_UCB8 (0xca) +#define CX24116_REG_CLKDIV (0xf3) +#define CX24116_REG_RATEDIV (0xf9) + +/* configured fec (not tuned) or actual FEC (tuned) 1=1/2 2=2/3 etc */ +#define CX24116_REG_FECSTATUS (0x9c) + +/* FECSTATUS bits */ +/* mask to determine configured fec (not tuned) or actual fec (tuned) */ +#define CX24116_FEC_FECMASK (0x1f) + +/* Select DVB-S demodulator, else DVB-S2 */ +#define CX24116_FEC_DVBS (0x20) +#define CX24116_FEC_UNKNOWN (0x40) /* Unknown/unused */ + +/* Pilot mode requested when tuning else always reset when tuned */ +#define CX24116_FEC_PILOT (0x80) + +/* arg buffer size */ +#define CX24116_ARGLEN (0x1e) + +/* rolloff */ +#define CX24116_ROLLOFF_020 (0x00) +#define CX24116_ROLLOFF_025 (0x01) +#define CX24116_ROLLOFF_035 (0x02) + +/* pilot bit */ +#define CX24116_PILOT_OFF (0x00) +#define CX24116_PILOT_ON (0x40) + +/* signal status */ +#define CX24116_HAS_SIGNAL (0x01) +#define CX24116_HAS_CARRIER (0x02) +#define CX24116_HAS_VITERBI (0x04) +#define CX24116_HAS_SYNCLOCK (0x08) +#define CX24116_HAS_UNKNOWN1 (0x10) +#define CX24116_HAS_UNKNOWN2 (0x20) +#define CX24116_STATUS_MASK (0x0f) +#define CX24116_SIGNAL_MASK (0xc0) + +#define CX24116_DISEQC_TONEOFF (0) /* toneburst never sent */ +#define CX24116_DISEQC_TONECACHE (1) /* toneburst cached */ +#define CX24116_DISEQC_MESGCACHE (2) /* message cached */ + +/* arg offset for DiSEqC */ +#define CX24116_DISEQC_BURST (1) +#define CX24116_DISEQC_ARG2_2 (2) /* unknown value=2 */ +#define CX24116_DISEQC_ARG3_0 (3) /* unknown value=0 */ +#define CX24116_DISEQC_ARG4_0 (4) /* unknown value=0 */ +#define CX24116_DISEQC_MSGLEN (5) +#define CX24116_DISEQC_MSGOFS (6) + +/* DiSEqC burst */ +#define CX24116_DISEQC_MINI_A (0) +#define CX24116_DISEQC_MINI_B (1) + +/* DiSEqC tone burst */ +static int toneburst = 1; +module_param(toneburst, int, 0644); +MODULE_PARM_DESC(toneburst, "DiSEqC toneburst 0=OFF, 1=TONE CACHE, "\ + "2=MESSAGE CACHE (default:1)"); + +/* SNR measurements */ +static int esno_snr; +module_param(esno_snr, int, 0644); +MODULE_PARM_DESC(esno_snr, "SNR return units, 0=PERCENTAGE 0-100, "\ + "1=ESNO(db * 10) (default:0)"); + +enum cmds { + CMD_SET_VCO = 0x10, + CMD_TUNEREQUEST = 0x11, + CMD_MPEGCONFIG = 0x13, + CMD_TUNERINIT = 0x14, + CMD_BANDWIDTH = 0x15, + CMD_GETAGC = 0x19, + CMD_LNBCONFIG = 0x20, + CMD_LNBSEND = 0x21, /* Formerly CMD_SEND_DISEQC */ + CMD_LNBDCLEVEL = 0x22, + CMD_SET_TONE = 0x23, + CMD_UPDFWVERS = 0x35, + CMD_TUNERSLEEP = 0x36, + CMD_AGCCONTROL = 0x3b, /* Unknown */ +}; + +/* The Demod/Tuner can't easily provide these, we cache them */ +struct cx24116_tuning { + u32 frequency; + u32 symbol_rate; + fe_spectral_inversion_t inversion; + fe_code_rate_t fec; + + fe_delivery_system_t delsys; + fe_modulation_t modulation; + fe_pilot_t pilot; + fe_rolloff_t rolloff; + + /* Demod values */ + u8 fec_val; + u8 fec_mask; + u8 inversion_val; + u8 pilot_val; + u8 rolloff_val; +}; + +/* Basic commands that are sent to the firmware */ +struct cx24116_cmd { + u8 len; + u8 args[CX24116_ARGLEN]; +}; + +struct cx24116_state { + struct i2c_adapter *i2c; + const struct cx24116_config *config; + + struct dvb_frontend frontend; + + struct cx24116_tuning dcur; + struct cx24116_tuning dnxt; + + u8 skip_fw_load; + u8 burst; + struct cx24116_cmd dsec_cmd; +}; + +static int cx24116_writereg(struct cx24116_state *state, int reg, int data) +{ + u8 buf[] = { reg, data }; + struct i2c_msg msg = { .addr = state->config->demod_address, + .flags = 0, .buf = buf, .len = 2 }; + int err; + + if (debug > 1) + printk("cx24116: %s: write reg 0x%02x, value 0x%02x\n", + __func__, reg, data); + + err = i2c_transfer(state->i2c, &msg, 1); + if (err != 1) { + printk(KERN_ERR "%s: writereg error(err == %i, reg == 0x%02x," + " value == 0x%02x)\n", __func__, err, reg, data); + return -EREMOTEIO; + } + + return 0; +} + +/* Bulk byte writes to a single I2C address, for 32k firmware load */ +static int cx24116_writeregN(struct cx24116_state *state, int reg, + const u8 *data, u16 len) +{ + int ret = -EREMOTEIO; + struct i2c_msg msg; + u8 *buf; + + buf = kmalloc(len + 1, GFP_KERNEL); + if (buf == NULL) { + printk("Unable to kmalloc\n"); + ret = -ENOMEM; + goto error; + } + + *(buf) = reg; + memcpy(buf + 1, data, len); + + msg.addr = state->config->demod_address; + msg.flags = 0; + msg.buf = buf; + msg.len = len + 1; + + if (debug > 1) + printk(KERN_INFO "cx24116: %s: write regN 0x%02x, len = %d\n", + __func__, reg, len); + + ret = i2c_transfer(state->i2c, &msg, 1); + if (ret != 1) { + printk(KERN_ERR "%s: writereg error(err == %i, reg == 0x%02x\n", + __func__, ret, reg); + ret = -EREMOTEIO; + } + +error: + kfree(buf); + + return ret; +} + +static int cx24116_readreg(struct cx24116_state *state, u8 reg) +{ + int ret; + u8 b0[] = { reg }; + u8 b1[] = { 0 }; + struct i2c_msg msg[] = { + { .addr = state->config->demod_address, .flags = 0, + .buf = b0, .len = 1 }, + { .addr = state->config->demod_address, .flags = I2C_M_RD, + .buf = b1, .len = 1 } + }; + + ret = i2c_transfer(state->i2c, msg, 2); + + if (ret != 2) { + printk(KERN_ERR "%s: reg=0x%x (error=%d)\n", + __func__, reg, ret); + return ret; + } + + if (debug > 1) + printk(KERN_INFO "cx24116: read reg 0x%02x, value 0x%02x\n", + reg, b1[0]); + + return b1[0]; +} + +static int cx24116_set_inversion(struct cx24116_state *state, + fe_spectral_inversion_t inversion) +{ + dprintk("%s(%d)\n", __func__, inversion); + + switch (inversion) { + case INVERSION_OFF: + state->dnxt.inversion_val = 0x00; + break; + case INVERSION_ON: + state->dnxt.inversion_val = 0x04; + break; + case INVERSION_AUTO: + state->dnxt.inversion_val = 0x0C; + break; + default: + return -EINVAL; + } + + state->dnxt.inversion = inversion; + + return 0; +} + +/* + * modfec (modulation and FEC) + * =========================== + * + * MOD FEC mask/val standard + * ---- -------- ----------- -------- + * QPSK FEC_1_2 0x02 0x02+X DVB-S + * QPSK FEC_2_3 0x04 0x02+X DVB-S + * QPSK FEC_3_4 0x08 0x02+X DVB-S + * QPSK FEC_4_5 0x10 0x02+X DVB-S (?) + * QPSK FEC_5_6 0x20 0x02+X DVB-S + * QPSK FEC_6_7 0x40 0x02+X DVB-S + * QPSK FEC_7_8 0x80 0x02+X DVB-S + * QPSK FEC_8_9 0x01 0x02+X DVB-S (?) (NOT SUPPORTED?) + * QPSK AUTO 0xff 0x02+X DVB-S + * + * For DVB-S high byte probably represents FEC + * and low byte selects the modulator. The high + * byte is search range mask. Bit 5 may turn + * on DVB-S and remaining bits represent some + * kind of calibration (how/what i do not know). + * + * Eg.(2/3) szap "Zone Horror" + * + * mask/val = 0x04, 0x20 + * status 1f | signal c3c0 | snr a333 | ber 00000098 | unc 0 | FE_HAS_LOCK + * + * mask/val = 0x04, 0x30 + * status 1f | signal c3c0 | snr a333 | ber 00000000 | unc 0 | FE_HAS_LOCK + * + * After tuning FECSTATUS contains actual FEC + * in use numbered 1 through to 8 for 1/2 .. 2/3 etc + * + * NBC=NOT/NON BACKWARD COMPATIBLE WITH DVB-S (DVB-S2 only) + * + * NBC-QPSK FEC_1_2 0x00, 0x04 DVB-S2 + * NBC-QPSK FEC_3_5 0x00, 0x05 DVB-S2 + * NBC-QPSK FEC_2_3 0x00, 0x06 DVB-S2 + * NBC-QPSK FEC_3_4 0x00, 0x07 DVB-S2 + * NBC-QPSK FEC_4_5 0x00, 0x08 DVB-S2 + * NBC-QPSK FEC_5_6 0x00, 0x09 DVB-S2 + * NBC-QPSK FEC_8_9 0x00, 0x0a DVB-S2 + * NBC-QPSK FEC_9_10 0x00, 0x0b DVB-S2 + * + * NBC-8PSK FEC_3_5 0x00, 0x0c DVB-S2 + * NBC-8PSK FEC_2_3 0x00, 0x0d DVB-S2 + * NBC-8PSK FEC_3_4 0x00, 0x0e DVB-S2 + * NBC-8PSK FEC_5_6 0x00, 0x0f DVB-S2 + * NBC-8PSK FEC_8_9 0x00, 0x10 DVB-S2 + * NBC-8PSK FEC_9_10 0x00, 0x11 DVB-S2 + * + * For DVB-S2 low bytes selects both modulator + * and FEC. High byte is meaningless here. To + * set pilot, bit 6 (0x40) is set. When inspecting + * FECSTATUS bit 7 (0x80) represents the pilot + * selection whilst not tuned. When tuned, actual FEC + * in use is found in FECSTATUS as per above. Pilot + * value is reset. + */ + +/* A table of modulation, fec and configuration bytes for the demod. + * Not all S2 mmodulation schemes are support and not all rates with + * a scheme are support. Especially, no auto detect when in S2 mode. + */ +static struct cx24116_modfec { + fe_delivery_system_t delivery_system; + fe_modulation_t modulation; + fe_code_rate_t fec; + u8 mask; /* In DVBS mode this is used to autodetect */ + u8 val; /* Passed to the firmware to indicate mode selection */ +} CX24116_MODFEC_MODES[] = { + /* QPSK. For unknown rates we set hardware to auto detect 0xfe 0x30 */ + + /*mod fec mask val */ + { SYS_DVBS, QPSK, FEC_NONE, 0xfe, 0x30 }, + { SYS_DVBS, QPSK, FEC_1_2, 0x02, 0x2e }, /* 00000010 00101110 */ + { SYS_DVBS, QPSK, FEC_2_3, 0x04, 0x2f }, /* 00000100 00101111 */ + { SYS_DVBS, QPSK, FEC_3_4, 0x08, 0x30 }, /* 00001000 00110000 */ + { SYS_DVBS, QPSK, FEC_4_5, 0xfe, 0x30 }, /* 000?0000 ? */ + { SYS_DVBS, QPSK, FEC_5_6, 0x20, 0x31 }, /* 00100000 00110001 */ + { SYS_DVBS, QPSK, FEC_6_7, 0xfe, 0x30 }, /* 0?000000 ? */ + { SYS_DVBS, QPSK, FEC_7_8, 0x80, 0x32 }, /* 10000000 00110010 */ + { SYS_DVBS, QPSK, FEC_8_9, 0xfe, 0x30 }, /* 0000000? ? */ + { SYS_DVBS, QPSK, FEC_AUTO, 0xfe, 0x30 }, + /* NBC-QPSK */ + { SYS_DVBS2, QPSK, FEC_1_2, 0x00, 0x04 }, + { SYS_DVBS2, QPSK, FEC_3_5, 0x00, 0x05 }, + { SYS_DVBS2, QPSK, FEC_2_3, 0x00, 0x06 }, + { SYS_DVBS2, QPSK, FEC_3_4, 0x00, 0x07 }, + { SYS_DVBS2, QPSK, FEC_4_5, 0x00, 0x08 }, + { SYS_DVBS2, QPSK, FEC_5_6, 0x00, 0x09 }, + { SYS_DVBS2, QPSK, FEC_8_9, 0x00, 0x0a }, + { SYS_DVBS2, QPSK, FEC_9_10, 0x00, 0x0b }, + /* 8PSK */ + { SYS_DVBS2, PSK_8, FEC_3_5, 0x00, 0x0c }, + { SYS_DVBS2, PSK_8, FEC_2_3, 0x00, 0x0d }, + { SYS_DVBS2, PSK_8, FEC_3_4, 0x00, 0x0e }, + { SYS_DVBS2, PSK_8, FEC_5_6, 0x00, 0x0f }, + { SYS_DVBS2, PSK_8, FEC_8_9, 0x00, 0x10 }, + { SYS_DVBS2, PSK_8, FEC_9_10, 0x00, 0x11 }, + /* + * `val' can be found in the FECSTATUS register when tuning. + * FECSTATUS will give the actual FEC in use if tuning was successful. + */ +}; + +static int cx24116_lookup_fecmod(struct cx24116_state *state, + fe_delivery_system_t d, fe_modulation_t m, fe_code_rate_t f) +{ + int i, ret = -EOPNOTSUPP; + + dprintk("%s(0x%02x,0x%02x)\n", __func__, m, f); + + for (i = 0; i < ARRAY_SIZE(CX24116_MODFEC_MODES); i++) { + if ((d == CX24116_MODFEC_MODES[i].delivery_system) && + (m == CX24116_MODFEC_MODES[i].modulation) && + (f == CX24116_MODFEC_MODES[i].fec)) { + ret = i; + break; + } + } + + return ret; +} + +static int cx24116_set_fec(struct cx24116_state *state, + fe_delivery_system_t delsys, fe_modulation_t mod, fe_code_rate_t fec) +{ + int ret = 0; + + dprintk("%s(0x%02x,0x%02x)\n", __func__, mod, fec); + + ret = cx24116_lookup_fecmod(state, delsys, mod, fec); + + if (ret < 0) + return ret; + + state->dnxt.fec = fec; + state->dnxt.fec_val = CX24116_MODFEC_MODES[ret].val; + state->dnxt.fec_mask = CX24116_MODFEC_MODES[ret].mask; + dprintk("%s() mask/val = 0x%02x/0x%02x\n", __func__, + state->dnxt.fec_mask, state->dnxt.fec_val); + + return 0; +} + +static int cx24116_set_symbolrate(struct cx24116_state *state, u32 rate) +{ + dprintk("%s(%d)\n", __func__, rate); + + /* check if symbol rate is within limits */ + if ((rate > state->frontend.ops.info.symbol_rate_max) || + (rate < state->frontend.ops.info.symbol_rate_min)) { + dprintk("%s() unsupported symbol_rate = %d\n", __func__, rate); + return -EOPNOTSUPP; + } + + state->dnxt.symbol_rate = rate; + dprintk("%s() symbol_rate = %d\n", __func__, rate); + + return 0; +} + +static int cx24116_load_firmware(struct dvb_frontend *fe, + const struct firmware *fw); + +static int cx24116_firmware_ondemand(struct dvb_frontend *fe) +{ + struct cx24116_state *state = fe->demodulator_priv; + const struct firmware *fw; + int ret = 0; + + dprintk("%s()\n", __func__); + + if (cx24116_readreg(state, 0x20) > 0) { + + if (state->skip_fw_load) + return 0; + + /* Load firmware */ + /* request the firmware, this will block until loaded */ + printk(KERN_INFO "%s: Waiting for firmware upload (%s)...\n", + __func__, CX24116_DEFAULT_FIRMWARE); + ret = request_firmware(&fw, CX24116_DEFAULT_FIRMWARE, + state->i2c->dev.parent); + printk(KERN_INFO "%s: Waiting for firmware upload(2)...\n", + __func__); + if (ret) { + printk(KERN_ERR "%s: No firmware uploaded " + "(timeout or file not found?)\n", __func__); + return ret; + } + + /* Make sure we don't recurse back through here + * during loading */ + state->skip_fw_load = 1; + + ret = cx24116_load_firmware(fe, fw); + if (ret) + printk(KERN_ERR "%s: Writing firmware to device failed\n", + __func__); + + release_firmware(fw); + + printk(KERN_INFO "%s: Firmware upload %s\n", __func__, + ret == 0 ? "complete" : "failed"); + + /* Ensure firmware is always loaded if required */ + state->skip_fw_load = 0; + } + + return ret; +} + +/* Take a basic firmware command structure, format it + * and forward it for processing + */ +static int cx24116_cmd_execute(struct dvb_frontend *fe, struct cx24116_cmd *cmd) +{ + struct cx24116_state *state = fe->demodulator_priv; + int i, ret; + + dprintk("%s()\n", __func__); + + /* Load the firmware if required */ + ret = cx24116_firmware_ondemand(fe); + if (ret != 0) { + printk(KERN_ERR "%s(): Unable initialise the firmware\n", + __func__); + return ret; + } + + /* Write the command */ + for (i = 0; i < cmd->len ; i++) { + dprintk("%s: 0x%02x == 0x%02x\n", __func__, i, cmd->args[i]); + cx24116_writereg(state, i, cmd->args[i]); + } + + /* Start execution and wait for cmd to terminate */ + cx24116_writereg(state, CX24116_REG_EXECUTE, 0x01); + while (cx24116_readreg(state, CX24116_REG_EXECUTE)) { + msleep(10); + if (i++ > 64) { + /* Avoid looping forever if the firmware does + not respond */ + printk(KERN_WARNING "%s() Firmware not responding\n", + __func__); + return -EREMOTEIO; + } + } + return 0; +} + +static int cx24116_load_firmware(struct dvb_frontend *fe, + const struct firmware *fw) +{ + struct cx24116_state *state = fe->demodulator_priv; + struct cx24116_cmd cmd; + int i, ret, len, max, remaining; + unsigned char vers[4]; + + dprintk("%s\n", __func__); + dprintk("Firmware is %zu bytes (%02x %02x .. %02x %02x)\n", + fw->size, + fw->data[0], + fw->data[1], + fw->data[fw->size-2], + fw->data[fw->size-1]); + + /* Toggle 88x SRST pin to reset demod */ + if (state->config->reset_device) + state->config->reset_device(fe); + + /* Begin the firmware load process */ + /* Prepare the demod, load the firmware, cleanup after load */ + + /* Init PLL */ + cx24116_writereg(state, 0xE5, 0x00); + cx24116_writereg(state, 0xF1, 0x08); + cx24116_writereg(state, 0xF2, 0x13); + + /* Start PLL */ + cx24116_writereg(state, 0xe0, 0x03); + cx24116_writereg(state, 0xe0, 0x00); + + /* Unknown */ + cx24116_writereg(state, CX24116_REG_CLKDIV, 0x46); + cx24116_writereg(state, CX24116_REG_RATEDIV, 0x00); + + /* Unknown */ + cx24116_writereg(state, 0xF0, 0x03); + cx24116_writereg(state, 0xF4, 0x81); + cx24116_writereg(state, 0xF5, 0x00); + cx24116_writereg(state, 0xF6, 0x00); + + /* Split firmware to the max I2C write len and write. + * Writes whole firmware as one write when i2c_wr_max is set to 0. */ + if (state->config->i2c_wr_max) + max = state->config->i2c_wr_max; + else + max = INT_MAX; /* enough for 32k firmware */ + + for (remaining = fw->size; remaining > 0; remaining -= max - 1) { + len = remaining; + if (len > max - 1) + len = max - 1; + + cx24116_writeregN(state, 0xF7, &fw->data[fw->size - remaining], + len); + } + + cx24116_writereg(state, 0xF4, 0x10); + cx24116_writereg(state, 0xF0, 0x00); + cx24116_writereg(state, 0xF8, 0x06); + + /* Firmware CMD 10: VCO config */ + cmd.args[0x00] = CMD_SET_VCO; + cmd.args[0x01] = 0x05; + cmd.args[0x02] = 0xdc; + cmd.args[0x03] = 0xda; + cmd.args[0x04] = 0xae; + cmd.args[0x05] = 0xaa; + cmd.args[0x06] = 0x04; + cmd.args[0x07] = 0x9d; + cmd.args[0x08] = 0xfc; + cmd.args[0x09] = 0x06; + cmd.len = 0x0a; + ret = cx24116_cmd_execute(fe, &cmd); + if (ret != 0) + return ret; + + cx24116_writereg(state, CX24116_REG_SSTATUS, 0x00); + + /* Firmware CMD 14: Tuner config */ + cmd.args[0x00] = CMD_TUNERINIT; + cmd.args[0x01] = 0x00; + cmd.args[0x02] = 0x00; + cmd.len = 0x03; + ret = cx24116_cmd_execute(fe, &cmd); + if (ret != 0) + return ret; + + cx24116_writereg(state, 0xe5, 0x00); + + /* Firmware CMD 13: MPEG config */ + cmd.args[0x00] = CMD_MPEGCONFIG; + cmd.args[0x01] = 0x01; + cmd.args[0x02] = 0x75; + cmd.args[0x03] = 0x00; + if (state->config->mpg_clk_pos_pol) + cmd.args[0x04] = state->config->mpg_clk_pos_pol; + else + cmd.args[0x04] = 0x02; + cmd.args[0x05] = 0x00; + cmd.len = 0x06; + ret = cx24116_cmd_execute(fe, &cmd); + if (ret != 0) + return ret; + + /* Firmware CMD 35: Get firmware version */ + cmd.args[0x00] = CMD_UPDFWVERS; + cmd.len = 0x02; + for (i = 0; i < 4; i++) { + cmd.args[0x01] = i; + ret = cx24116_cmd_execute(fe, &cmd); + if (ret != 0) + return ret; + vers[i] = cx24116_readreg(state, CX24116_REG_MAILBOX); + } + printk(KERN_INFO "%s: FW version %i.%i.%i.%i\n", __func__, + vers[0], vers[1], vers[2], vers[3]); + + return 0; +} + +static int cx24116_read_status(struct dvb_frontend *fe, fe_status_t *status) +{ + struct cx24116_state *state = fe->demodulator_priv; + + int lock = cx24116_readreg(state, CX24116_REG_SSTATUS) & + CX24116_STATUS_MASK; + + dprintk("%s: status = 0x%02x\n", __func__, lock); + + *status = 0; + + if (lock & CX24116_HAS_SIGNAL) + *status |= FE_HAS_SIGNAL; + if (lock & CX24116_HAS_CARRIER) + *status |= FE_HAS_CARRIER; + if (lock & CX24116_HAS_VITERBI) + *status |= FE_HAS_VITERBI; + if (lock & CX24116_HAS_SYNCLOCK) + *status |= FE_HAS_SYNC | FE_HAS_LOCK; + + return 0; +} + +static int cx24116_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct cx24116_state *state = fe->demodulator_priv; + + dprintk("%s()\n", __func__); + + *ber = (cx24116_readreg(state, CX24116_REG_BER24) << 24) | + (cx24116_readreg(state, CX24116_REG_BER16) << 16) | + (cx24116_readreg(state, CX24116_REG_BER8) << 8) | + cx24116_readreg(state, CX24116_REG_BER0); + + return 0; +} + +/* TODO Determine function and scale appropriately */ +static int cx24116_read_signal_strength(struct dvb_frontend *fe, + u16 *signal_strength) +{ + struct cx24116_state *state = fe->demodulator_priv; + struct cx24116_cmd cmd; + int ret; + u16 sig_reading; + + dprintk("%s()\n", __func__); + + /* Firmware CMD 19: Get AGC */ + cmd.args[0x00] = CMD_GETAGC; + cmd.len = 0x01; + ret = cx24116_cmd_execute(fe, &cmd); + if (ret != 0) + return ret; + + sig_reading = + (cx24116_readreg(state, + CX24116_REG_SSTATUS) & CX24116_SIGNAL_MASK) | + (cx24116_readreg(state, CX24116_REG_SIGNAL) << 6); + *signal_strength = 0 - sig_reading; + + dprintk("%s: raw / cooked = 0x%04x / 0x%04x\n", + __func__, sig_reading, *signal_strength); + + return 0; +} + +/* SNR (0..100)% = (sig & 0xf0) * 10 + (sig & 0x0f) * 10 / 16 */ +static int cx24116_read_snr_pct(struct dvb_frontend *fe, u16 *snr) +{ + struct cx24116_state *state = fe->demodulator_priv; + u8 snr_reading; + static const u32 snr_tab[] = { /* 10 x Table (rounded up) */ + 0x00000, 0x0199A, 0x03333, 0x04ccD, 0x06667, + 0x08000, 0x0999A, 0x0b333, 0x0cccD, 0x0e667, + 0x10000, 0x1199A, 0x13333, 0x14ccD, 0x16667, + 0x18000 }; + + dprintk("%s()\n", __func__); + + snr_reading = cx24116_readreg(state, CX24116_REG_QUALITY0); + + if (snr_reading >= 0xa0 /* 100% */) + *snr = 0xffff; + else + *snr = snr_tab[(snr_reading & 0xf0) >> 4] + + (snr_tab[(snr_reading & 0x0f)] >> 4); + + dprintk("%s: raw / cooked = 0x%02x / 0x%04x\n", __func__, + snr_reading, *snr); + + return 0; +} + +/* The reelbox patches show the value in the registers represents + * ESNO, from 0->30db (values 0->300). We provide this value by + * default. + */ +static int cx24116_read_snr_esno(struct dvb_frontend *fe, u16 *snr) +{ + struct cx24116_state *state = fe->demodulator_priv; + + dprintk("%s()\n", __func__); + + *snr = cx24116_readreg(state, CX24116_REG_QUALITY8) << 8 | + cx24116_readreg(state, CX24116_REG_QUALITY0); + + dprintk("%s: raw 0x%04x\n", __func__, *snr); + + return 0; +} + +static int cx24116_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + if (esno_snr == 1) + return cx24116_read_snr_esno(fe, snr); + else + return cx24116_read_snr_pct(fe, snr); +} + +static int cx24116_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + struct cx24116_state *state = fe->demodulator_priv; + + dprintk("%s()\n", __func__); + + *ucblocks = (cx24116_readreg(state, CX24116_REG_UCB8) << 8) | + cx24116_readreg(state, CX24116_REG_UCB0); + + return 0; +} + +/* Overwrite the current tuning params, we are about to tune */ +static void cx24116_clone_params(struct dvb_frontend *fe) +{ + struct cx24116_state *state = fe->demodulator_priv; + memcpy(&state->dcur, &state->dnxt, sizeof(state->dcur)); +} + +/* Wait for LNB */ +static int cx24116_wait_for_lnb(struct dvb_frontend *fe) +{ + struct cx24116_state *state = fe->demodulator_priv; + int i; + + dprintk("%s() qstatus = 0x%02x\n", __func__, + cx24116_readreg(state, CX24116_REG_QSTATUS)); + + /* Wait for up to 300 ms */ + for (i = 0; i < 30 ; i++) { + if (cx24116_readreg(state, CX24116_REG_QSTATUS) & 0x20) + return 0; + msleep(10); + } + + dprintk("%s(): LNB not ready\n", __func__); + + return -ETIMEDOUT; /* -EBUSY ? */ +} + +static int cx24116_set_voltage(struct dvb_frontend *fe, + fe_sec_voltage_t voltage) +{ + struct cx24116_cmd cmd; + int ret; + + dprintk("%s: %s\n", __func__, + voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" : + voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??"); + + /* Wait for LNB ready */ + ret = cx24116_wait_for_lnb(fe); + if (ret != 0) + return ret; + + /* Wait for voltage/min repeat delay */ + msleep(100); + + cmd.args[0x00] = CMD_LNBDCLEVEL; + cmd.args[0x01] = (voltage == SEC_VOLTAGE_18 ? 0x01 : 0x00); + cmd.len = 0x02; + + /* Min delay time before DiSEqC send */ + msleep(15); + + return cx24116_cmd_execute(fe, &cmd); +} + +static int cx24116_set_tone(struct dvb_frontend *fe, + fe_sec_tone_mode_t tone) +{ + struct cx24116_cmd cmd; + int ret; + + dprintk("%s(%d)\n", __func__, tone); + if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) { + printk(KERN_ERR "%s: Invalid, tone=%d\n", __func__, tone); + return -EINVAL; + } + + /* Wait for LNB ready */ + ret = cx24116_wait_for_lnb(fe); + if (ret != 0) + return ret; + + /* Min delay time after DiSEqC send */ + msleep(15); /* XXX determine is FW does this, see send_diseqc/burst */ + + /* Now we set the tone */ + cmd.args[0x00] = CMD_SET_TONE; + cmd.args[0x01] = 0x00; + cmd.args[0x02] = 0x00; + + switch (tone) { + case SEC_TONE_ON: + dprintk("%s: setting tone on\n", __func__); + cmd.args[0x03] = 0x01; + break; + case SEC_TONE_OFF: + dprintk("%s: setting tone off\n", __func__); + cmd.args[0x03] = 0x00; + break; + } + cmd.len = 0x04; + + /* Min delay time before DiSEqC send */ + msleep(15); /* XXX determine is FW does this, see send_diseqc/burst */ + + return cx24116_cmd_execute(fe, &cmd); +} + +/* Initialise DiSEqC */ +static int cx24116_diseqc_init(struct dvb_frontend *fe) +{ + struct cx24116_state *state = fe->demodulator_priv; + struct cx24116_cmd cmd; + int ret; + + /* Firmware CMD 20: LNB/DiSEqC config */ + cmd.args[0x00] = CMD_LNBCONFIG; + cmd.args[0x01] = 0x00; + cmd.args[0x02] = 0x10; + cmd.args[0x03] = 0x00; + cmd.args[0x04] = 0x8f; + cmd.args[0x05] = 0x28; + cmd.args[0x06] = (toneburst == CX24116_DISEQC_TONEOFF) ? 0x00 : 0x01; + cmd.args[0x07] = 0x01; + cmd.len = 0x08; + ret = cx24116_cmd_execute(fe, &cmd); + if (ret != 0) + return ret; + + /* Prepare a DiSEqC command */ + state->dsec_cmd.args[0x00] = CMD_LNBSEND; + + /* DiSEqC burst */ + state->dsec_cmd.args[CX24116_DISEQC_BURST] = CX24116_DISEQC_MINI_A; + + /* Unknown */ + state->dsec_cmd.args[CX24116_DISEQC_ARG2_2] = 0x02; + state->dsec_cmd.args[CX24116_DISEQC_ARG3_0] = 0x00; + /* Continuation flag? */ + state->dsec_cmd.args[CX24116_DISEQC_ARG4_0] = 0x00; + + /* DiSEqC message length */ + state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] = 0x00; + + /* Command length */ + state->dsec_cmd.len = CX24116_DISEQC_MSGOFS; + + return 0; +} + +/* Send DiSEqC message with derived burst (hack) || previous burst */ +static int cx24116_send_diseqc_msg(struct dvb_frontend *fe, + struct dvb_diseqc_master_cmd *d) +{ + struct cx24116_state *state = fe->demodulator_priv; + int i, ret; + + /* Dump DiSEqC message */ + if (debug) { + printk(KERN_INFO "cx24116: %s(", __func__); + for (i = 0 ; i < d->msg_len ;) { + printk(KERN_INFO "0x%02x", d->msg[i]); + if (++i < d->msg_len) + printk(KERN_INFO ", "); + } + printk(") toneburst=%d\n", toneburst); + } + + /* Validate length */ + if (d->msg_len > (CX24116_ARGLEN - CX24116_DISEQC_MSGOFS)) + return -EINVAL; + + /* DiSEqC message */ + for (i = 0; i < d->msg_len; i++) + state->dsec_cmd.args[CX24116_DISEQC_MSGOFS + i] = d->msg[i]; + + /* DiSEqC message length */ + state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] = d->msg_len; + + /* Command length */ + state->dsec_cmd.len = CX24116_DISEQC_MSGOFS + + state->dsec_cmd.args[CX24116_DISEQC_MSGLEN]; + + /* DiSEqC toneburst */ + if (toneburst == CX24116_DISEQC_MESGCACHE) + /* Message is cached */ + return 0; + + else if (toneburst == CX24116_DISEQC_TONEOFF) + /* Message is sent without burst */ + state->dsec_cmd.args[CX24116_DISEQC_BURST] = 0; + + else if (toneburst == CX24116_DISEQC_TONECACHE) { + /* + * Message is sent with derived else cached burst + * + * WRITE PORT GROUP COMMAND 38 + * + * 0/A/A: E0 10 38 F0..F3 + * 1/B/B: E0 10 38 F4..F7 + * 2/C/A: E0 10 38 F8..FB + * 3/D/B: E0 10 38 FC..FF + * + * databyte[3]= 8421:8421 + * ABCD:WXYZ + * CLR :SET + * + * WX= PORT SELECT 0..3 (X=TONEBURST) + * Y = VOLTAGE (0=13V, 1=18V) + * Z = BAND (0=LOW, 1=HIGH(22K)) + */ + if (d->msg_len >= 4 && d->msg[2] == 0x38) + state->dsec_cmd.args[CX24116_DISEQC_BURST] = + ((d->msg[3] & 4) >> 2); + if (debug) + dprintk("%s burst=%d\n", __func__, + state->dsec_cmd.args[CX24116_DISEQC_BURST]); + } + + /* Wait for LNB ready */ + ret = cx24116_wait_for_lnb(fe); + if (ret != 0) + return ret; + + /* Wait for voltage/min repeat delay */ + msleep(100); + + /* Command */ + ret = cx24116_cmd_execute(fe, &state->dsec_cmd); + if (ret != 0) + return ret; + /* + * Wait for send + * + * Eutelsat spec: + * >15ms delay + (XXX determine if FW does this, see set_tone) + * 13.5ms per byte + + * >15ms delay + + * 12.5ms burst + + * >15ms delay (XXX determine if FW does this, see set_tone) + */ + msleep((state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] << 4) + + ((toneburst == CX24116_DISEQC_TONEOFF) ? 30 : 60)); + + return 0; +} + +/* Send DiSEqC burst */ +static int cx24116_diseqc_send_burst(struct dvb_frontend *fe, + fe_sec_mini_cmd_t burst) +{ + struct cx24116_state *state = fe->demodulator_priv; + int ret; + + dprintk("%s(%d) toneburst=%d\n", __func__, burst, toneburst); + + /* DiSEqC burst */ + if (burst == SEC_MINI_A) + state->dsec_cmd.args[CX24116_DISEQC_BURST] = + CX24116_DISEQC_MINI_A; + else if (burst == SEC_MINI_B) + state->dsec_cmd.args[CX24116_DISEQC_BURST] = + CX24116_DISEQC_MINI_B; + else + return -EINVAL; + + /* DiSEqC toneburst */ + if (toneburst != CX24116_DISEQC_MESGCACHE) + /* Burst is cached */ + return 0; + + /* Burst is to be sent with cached message */ + + /* Wait for LNB ready */ + ret = cx24116_wait_for_lnb(fe); + if (ret != 0) + return ret; + + /* Wait for voltage/min repeat delay */ + msleep(100); + + /* Command */ + ret = cx24116_cmd_execute(fe, &state->dsec_cmd); + if (ret != 0) + return ret; + + /* + * Wait for send + * + * Eutelsat spec: + * >15ms delay + (XXX determine if FW does this, see set_tone) + * 13.5ms per byte + + * >15ms delay + + * 12.5ms burst + + * >15ms delay (XXX determine if FW does this, see set_tone) + */ + msleep((state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] << 4) + 60); + + return 0; +} + +static void cx24116_release(struct dvb_frontend *fe) +{ + struct cx24116_state *state = fe->demodulator_priv; + dprintk("%s\n", __func__); + kfree(state); +} + +static struct dvb_frontend_ops cx24116_ops; + +struct dvb_frontend *cx24116_attach(const struct cx24116_config *config, + struct i2c_adapter *i2c) +{ + struct cx24116_state *state = NULL; + int ret; + + dprintk("%s\n", __func__); + + /* allocate memory for the internal state */ + state = kzalloc(sizeof(struct cx24116_state), GFP_KERNEL); + if (state == NULL) + goto error1; + + state->config = config; + state->i2c = i2c; + + /* check if the demod is present */ + ret = (cx24116_readreg(state, 0xFF) << 8) | + cx24116_readreg(state, 0xFE); + if (ret != 0x0501) { + printk(KERN_INFO "Invalid probe, probably not a CX24116 device\n"); + goto error2; + } + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, &cx24116_ops, + sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + return &state->frontend; + +error2: kfree(state); +error1: return NULL; +} +EXPORT_SYMBOL(cx24116_attach); + +/* + * Initialise or wake up device + * + * Power config will reset and load initial firmware if required + */ +static int cx24116_initfe(struct dvb_frontend *fe) +{ + struct cx24116_state *state = fe->demodulator_priv; + struct cx24116_cmd cmd; + int ret; + + dprintk("%s()\n", __func__); + + /* Power on */ + cx24116_writereg(state, 0xe0, 0); |