| /* |
| Conexant cx24116/cx24118 - DVBS/S2 Satellite demod/tuner driver |
| |
| Copyright (C) 2006-2008 Steven Toth <stoth@hauppauge.com> |
| |
| 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. |
| */ |
| |
| /* |
| * Updates by Darron Broad 2007. |
| * |
| * March |
| * Fixed some bugs. |
| * Added diseqc support. |
| * Added corrected signal strength support. |
| * |
| * August |
| * Sync with legacy version. |
| * Some clean ups. |
| */ |
| |
| #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" |
| |
| /* |
| * Fetch firmware in the following manner. |
| * |
| * #!/bin/sh |
| * wget ftp://167.206.143.11/outgoing/Oxford/88x_2_117_24275_1_INF.zip |
| * unzip 88x_2_117_24275_1_INF.zip |
| * dd if=Driver88/hcw88bda.sys of=dvb-fe-cx24116.fw skip=81768 bs=1 count=32522 |
| */ |
| #define CX24116_DEFAULT_FIRMWARE "dvb-fe-cx24116.fw" |
| #define CX24116_SEARCH_RANGE_KHZ 5000 |
| |
| /* registers (TO BE COMPLETED) */ |
| #define CX24116_REG_SIGNAL (0xd5) |
| |
| /* arg buffer size */ |
| #define CX24116_ARGLEN (0x1e) |
| |
| /* 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) |
| |
| static int debug = 0; |
| #define dprintk(args...) \ |
| do { \ |
| if (debug) printk ("cx24116: " args); \ |
| } while (0) |
| |
| enum cmds |
| { |
| CMD_INIT_CMD10 = 0x10, |
| CMD_TUNEREQUEST = 0x11, |
| CMD_INIT_CMD13 = 0x13, |
| CMD_INIT_CMD14 = 0x14, |
| CMD_SEND_DISEQC = 0x21, |
| CMD_SET_TONEPRE = 0x22, |
| CMD_SET_TONE = 0x23, |
| }; |
| |
| /* 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_modulation_t modulation; |
| |
| /* Demod values */ |
| u8 fec_val; |
| u8 fec_mask; |
| u8 inversion_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; |
| }; |
| |
| 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); |
| |
| if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) { |
| printk("%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, 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("cx24116: %s: write regN 0x%02x, len = %d\n", |
| __func__,reg, len); |
| |
| if ((ret = i2c_transfer(state->i2c, &msg, 1)) != 1) { |
| printk("%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("%s: reg=0x%x (error=%d)\n", __func__, reg, ret); |
| return ret; |
| } |
| |
| if (debug>1) |
| printk("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; |
| } |
| |
| /* 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. |
| */ |
| struct cx24116_modfec { |
| 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 */ |
| { QPSK, FEC_NONE, 0xfe, 0x30 }, |
| { QPSK, FEC_1_2, 0x02, 0x2e }, |
| { QPSK, FEC_2_3, 0x04, 0x2f }, |
| { QPSK, FEC_3_4, 0x08, 0x30 }, |
| { QPSK, FEC_4_5, 0xfe, 0x30 }, |
| { QPSK, FEC_5_6, 0x20, 0x31 }, |
| { QPSK, FEC_6_7, 0xfe, 0x30 }, |
| { QPSK, FEC_7_8, 0x80, 0x32 }, |
| { QPSK, FEC_8_9, 0xfe, 0x30 }, |
| { QPSK, FEC_AUTO, 0xfe, 0x30 }, |
| /* NBC-QPSK */ |
| { NBC_QPSK, FEC_1_2, 0x00, 0x04 }, |
| { NBC_QPSK, FEC_3_5, 0x00, 0x05 }, |
| { NBC_QPSK, FEC_2_3, 0x00, 0x06 }, |
| { NBC_QPSK, FEC_3_4, 0x00, 0x07 }, |
| { NBC_QPSK, FEC_4_5, 0x00, 0x08 }, |
| { NBC_QPSK, FEC_5_6, 0x00, 0x09 }, |
| { NBC_QPSK, FEC_8_9, 0x00, 0x0a }, |
| { NBC_QPSK, FEC_9_10, 0x00, 0x0b }, |
| /* 8PSK */ |
| { _8PSK, FEC_3_5, 0x00, 0x0c }, |
| { _8PSK, FEC_2_3, 0x00, 0x0d }, |
| { _8PSK, FEC_3_4, 0x00, 0x0e }, |
| { _8PSK, FEC_5_6, 0x00, 0x0f }, |
| { _8PSK, FEC_9_10, 0x00, 0x11 }, |
| }; |
| |
| static int cx24116_lookup_fecmod(struct cx24116_state* state, |
| fe_modulation_t m, fe_code_rate_t f) |
| { |
| int i, ret = -EOPNOTSUPP; |
| |
| for(i=0 ; i < sizeof(CX24116_MODFEC_MODES) / sizeof(struct cx24116_modfec) ; i++) |
| { |
| if( (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_modulation_t mod, fe_code_rate_t fec) |
| { |
| int ret = 0; |
| dprintk("%s()\n", __func__); |
| |
| ret = cx24116_lookup_fecmod(state, mod, fec); |
| |
| if(ret < 0) |
| return ret; |
| |
| state->dnxt.fec_val = CX24116_MODFEC_MODES[ret].val; |
| state->dnxt.fec_mask = CX24116_MODFEC_MODES[ret].mask; |
| dprintk("%s() fec_val/mask = 0x%02x/0x%02x\n", __func__, |
| state->dnxt.fec_val, state->dnxt.fec_mask); |
| |
| return 0; |
| } |
| |
| static int cx24116_set_symbolrate(struct cx24116_state* state, u32 rate) |
| { |
| int ret = 0; |
| |
| dprintk("%s()\n", __func__); |
| |
| state->dnxt.symbol_rate = rate; |
| |
| dprintk("%s() symbol_rate = %d\n", __func__, state->dnxt.symbol_rate); |
| |
| /* check if symbol rate is within limits */ |
| if ((state->dnxt.symbol_rate > state->frontend.ops.info.symbol_rate_max) || |
| (state->dnxt.symbol_rate < state->frontend.ops.info.symbol_rate_min)) |
| ret = -EOPNOTSUPP; |
| |
| return ret; |
| } |
| |
| 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 someone uploads it */ |
| printk("%s: Waiting for firmware upload (%s)...\n", __func__, CX24116_DEFAULT_FIRMWARE); |
| ret = request_firmware(&fw, CX24116_DEFAULT_FIRMWARE, &state->i2c->dev); |
| printk("%s: Waiting for firmware upload(2)...\n", __func__); |
| if (ret) { |
| printk("%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("%s: Writing firmware to device failed\n", __func__); |
| |
| release_firmware(fw); |
| |
| printk("%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 */ |
| if ( (ret = cx24116_firmware_ondemand(fe)) != 0) |
| { |
| printk("%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, 0x1f, 0x01); |
| while( cx24116_readreg(state, 0x1f) ) |
| { |
| msleep(10); |
| if(i++ > 64) |
| { |
| /* Avoid looping forever if the firmware does no respond */ |
| printk("%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 ret; |
| |
| 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 */ |
| cx24116_writereg(state, 0xF1, 0x08); |
| cx24116_writereg(state, 0xF2, cx24116_readreg(state, 0xF2) | 0x03); |
| cx24116_writereg(state, 0xF3, 0x46); |
| cx24116_writereg(state, 0xF9, 0x00); |
| |
| cx24116_writereg(state, 0xF0, 0x03); |
| cx24116_writereg(state, 0xF4, 0x81); |
| cx24116_writereg(state, 0xF5, 0x00); |
| cx24116_writereg(state, 0xF6, 0x00); |
| |
| /* write the entire firmware as one transaction */ |
| cx24116_writeregN(state, 0xF7, fw->data, fw->size); |
| |
| cx24116_writereg(state, 0xF4, 0x10); |
| cx24116_writereg(state, 0xF0, 0x00); |
| cx24116_writereg(state, 0xF8, 0x06); |
| |
| /* Firmware CMD 10: Chip config? */ |
| cmd.args[0x00] = CMD_INIT_CMD10; |
| 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, 0x9d, 0x00); |
| |
| /* Firmware CMD 14: Unknown */ |
| cmd.args[0x00] = CMD_INIT_CMD14; |
| 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: Unknown - Firmware config? */ |
| cmd.args[0x00] = CMD_INIT_CMD13; |
| cmd.args[0x01] = 0x01; |
| cmd.args[0x02] = 0x75; |
| cmd.args[0x03] = 0x00; |
| cmd.args[0x04] = 0x02; |
| cmd.args[0x05] = 0x00; |
| cmd.len= 0x06; |
| ret = cx24116_cmd_execute(fe, &cmd); |
| if (ret != 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int cx24116_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage) |
| { |
| /* The isl6421 module will override this function in the fops. */ |
| dprintk("%s() This should never appear if the isl6421 module is loaded correctly\n",__func__); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| 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, 0x9d); |
| |
| dprintk("%s: status = 0x%02x\n", __func__, lock); |
| |
| *status = 0; |
| |
| if (lock & 0x01) |
| *status |= FE_HAS_SIGNAL; |
| if (lock & 0x02) |
| *status |= FE_HAS_CARRIER; |
| if (lock & 0x04) |
| *status |= FE_HAS_VITERBI; |
| if (lock & 0x08) |
| *status |= FE_HAS_SYNC | FE_HAS_LOCK; |
| |
| return 0; |
| } |
| |
| /* TODO: Not clear how we do this */ |
| static int cx24116_read_ber(struct dvb_frontend* fe, u32* ber) |
| { |
| //struct cx24116_state *state = fe->demodulator_priv; |
| dprintk("%s()\n", __func__); |
| *ber = 0; |
| |
| return 0; |
| } |
| |
| /* Signal strength (0..100)% = (sig & 0xf0) * 10 + (sig & 0x0f) * 10 / 16 */ |
| static int cx24116_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength) |
| { |
| struct cx24116_state *state = fe->demodulator_priv; |
| u8 strength_reg; |
| static const u32 strength_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__); |
| |
| strength_reg = cx24116_readreg(state, CX24116_REG_SIGNAL); |
| |
| if(strength_reg < 0xa0) |
| *signal_strength = strength_tab [ ( strength_reg & 0xf0 ) >> 4 ] + |
| ( strength_tab [ ( strength_reg & 0x0f ) ] >> 4 ); |
| else |
| *signal_strength = 0xffff; |
| |
| dprintk("%s: Signal strength (raw / cooked) = (0x%02x / 0x%04x)\n", |
| __func__,strength_reg,*signal_strength); |
| |
| return 0; |
| } |
| |
| /* TODO: Not clear how we do this */ |
| static int cx24116_read_snr(struct dvb_frontend* fe, u16* snr) |
| { |
| //struct cx24116_state *state = fe->demodulator_priv; |
| dprintk("%s()\n", __func__); |
| *snr = 0; |
| |
| return 0; |
| } |
| |
| /* TODO: Not clear how we do this */ |
| static int cx24116_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) |
| { |
| //struct cx24116_state *state = fe->demodulator_priv; |
| dprintk("%s()\n", __func__); |
| *ucblocks = 0; |
| |
| 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)); |
| } |
| |
| 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("%s: Invalid, tone=%d\n", __func__, tone); |
| return -EINVAL; |
| } |
| |
| /* This is always done before the tone is set */ |
| cmd.args[0x00] = CMD_SET_TONEPRE; |
| cmd.args[0x01] = 0x00; |
| cmd.len= 0x02; |
| ret = cx24116_cmd_execute(fe, &cmd); |
| if (ret != 0) |
| return ret; |
| |
| /* 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; |
| |
| return cx24116_cmd_execute(fe, &cmd); |
| } |
| |
| /* Initialise DiSEqC */ |
| static int cx24116_diseqc_init(struct dvb_frontend* fe) |
| { |
| struct cx24116_state *state = fe->demodulator_priv; |
| |
| /* Default DiSEqC burst state */ |
| state->burst = CX24116_DISEQC_MINI_A; |
| |
| 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; |
| struct cx24116_cmd cmd; |
| int i, ret; |
| |
| /* Dump DiSEqC message */ |
| if (debug) { |
| printk("cx24116: %s(", __func__); |
| for(i = 0 ; i < d->msg_len ;) { |
| printk("0x%02x", d->msg[i]); |
| if(++i < d->msg_len) |
| printk(", "); |
| } |
| printk(")\n"); |
| } |
| |
| if(d->msg_len > (CX24116_ARGLEN - CX24116_DISEQC_MSGOFS)) |
| return -EINVAL; |
| |
| cmd.args[0x00] = CMD_SEND_DISEQC; |
| cmd.args[CX24116_DISEQC_ARG2_2] = 0x02; |
| cmd.args[CX24116_DISEQC_ARG3_0] = 0x00; |
| cmd.args[CX24116_DISEQC_ARG4_0] = 0x00; |
| |
| /* DiSEqC message */ |
| for (i = 0; i < d->msg_len; i++) |
| cmd.args[CX24116_DISEQC_MSGOFS + i] = d->msg[i]; |
| |
| /* Hack: Derive burst from command else use previous burst */ |
| if(d->msg_len >= 4 && d->msg[2] == 0x38) |
| cmd.args[CX24116_DISEQC_BURST] = (d->msg[3] >> 2) & 1; |
| else |
| cmd.args[CX24116_DISEQC_BURST] = state->burst; |
| |
| cmd.args[CX24116_DISEQC_MSGLEN] = d->msg_len; |
| cmd.len = CX24116_DISEQC_MSGOFS + d->msg_len; |
| |
| ret = cx24116_cmd_execute(fe, &cmd); |
| |
| /* Firmware command duration is unknown, so guess... |
| * |
| * Eutelsat spec: |
| * >15ms delay + |
| * 13.5ms per byte + |
| * >15ms delay + |
| * 12.5ms burst + |
| * >15ms delay |
| */ |
| if(ret == 0) |
| msleep( (cmd.args[CX24116_DISEQC_MSGLEN] << 4) + 60 ); |
| |
| return ret; |
| } |
| |
| /* 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; |
| struct cx24116_cmd cmd; |
| int ret; |
| |
| dprintk("%s(%d)\n",__func__,(int)burst); |
| |
| cmd.args[0x00] = CMD_SEND_DISEQC; |
| cmd.args[CX24116_DISEQC_ARG2_2] = 0x02; |
| cmd.args[CX24116_DISEQC_ARG3_0] = 0x00; |
| cmd.args[CX24116_DISEQC_ARG4_0] = 0x00; |
| |
| if (burst == SEC_MINI_A) |
| cmd.args[CX24116_DISEQC_BURST] = CX24116_DISEQC_MINI_A; |
| else if(burst == SEC_MINI_B) |
| cmd.args[CX24116_DISEQC_BURST] = CX24116_DISEQC_MINI_B; |
| else |
| return -EINVAL; |
| |
| /* Cache as previous burst state */ |
| state->burst= cmd.args[CX24116_DISEQC_BURST]; |
| |
| cmd.args[CX24116_DISEQC_MSGLEN] = 0x00; |
| cmd.len= CX24116_DISEQC_MSGOFS; |
| |
| ret= cx24116_cmd_execute(fe, &cmd); |
| |
| /* Firmware command duration is unknown, so guess... */ |
| if(ret == 0) |
| msleep(60); |
| |
| return ret; |
| } |
| |
| 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 = kmalloc(sizeof(struct cx24116_state), GFP_KERNEL); |
| if (state == NULL) { |
| printk("Unable to kmalloc\n"); |
| goto error; |
| } |
| |
| /* setup the state */ |
| memset(state, 0, sizeof(struct cx24116_state)); |
| |
| 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("Invalid probe, probably not a CX24116 device\n"); |
| goto error; |
| } |
| |
| /* create dvb_frontend */ |
| memcpy(&state->frontend.ops, &cx24116_ops, sizeof(struct dvb_frontend_ops)); |
| state->frontend.demodulator_priv = state; |
| return &state->frontend; |
| |
| error: |
| kfree(state); |
| |
| return NULL; |
| } |
| |
| static int cx24116_get_params(struct dvb_frontend* fe) |
| { |
| struct cx24116_state *state = fe->demodulator_priv; |
| struct tv_frontend_properties *cache = &fe->tv_property_cache; |
| |
| dprintk("%s()\n",__func__); |
| |
| cache->frequency = state->dcur.frequency; |
| cache->inversion = state->dcur.inversion; |
| cache->modulation = state->dcur.modulation; |
| cache->fec_inner = state->dcur.fec; |
| cache->symbol_rate = state->dcur.symbol_rate; |
| |
| return 0; |
| } |
| |
| static int cx24116_initfe(struct dvb_frontend* fe) |
| { |
| dprintk("%s()\n",__func__); |
| |
| return cx24116_diseqc_init(fe); |
| } |
| |
| static int cx24116_set_property(struct dvb_frontend *fe, tv_property_t* tvp) |
| { |
| dprintk("%s(..)\n", __func__); |
| return 0; |
| } |
| |
| static int cx24116_set_params(struct dvb_frontend *fe) |
| { |
| dprintk("%s(..) We were notified that a tune request may occur\n", __func__); |
| return 0; |
| } |
| |
| /* dvb-core told us to tune, the tv property cache will be complete, |
| * it's safe for is to pull values and use them for tuning purposes. |
| */ |
| static int cx24116_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) |
| { |
| struct cx24116_state *state = fe->demodulator_priv; |
| struct tv_frontend_properties *c = &fe->tv_property_cache; |
| struct cx24116_cmd cmd; |
| fe_status_t tunerstat; |
| int ret; |
| u8 retune=4; |
| |
| dprintk("%s()\n",__func__); |
| |
| state->dnxt.modulation = c->modulation; |
| state->dnxt.frequency = c->frequency; |
| |
| if ((ret = cx24116_set_inversion(state, c->inversion)) != 0) |
| return ret; |
| |
| if ((ret = cx24116_set_fec(state, c->modulation, c->fec_inner)) != 0) |
| return ret; |
| |
| if ((ret = cx24116_set_symbolrate(state, c->symbol_rate)) != 0) |
| return ret; |
| |
| /* discard the 'current' tuning parameters and prepare to tune */ |
| cx24116_clone_params(fe); |
| |
| dprintk("%s: frequency = %d\n", __func__, state->dcur.frequency); |
| dprintk("%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate); |
| dprintk("%s: FEC = %d (mask/val = 0x%02x/0x%02x)\n", __func__, |
| state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val); |
| dprintk("%s: Inversion = %d (val = 0x%02x)\n", __func__, |
| state->dcur.inversion, state->dcur.inversion_val); |
| |
| if (state->config->set_ts_params) |
| state->config->set_ts_params(fe, 0); |
| |
| /* Prepare a tune request */ |
| cmd.args[0x00] = CMD_TUNEREQUEST; |
| |
| /* Frequency */ |
| cmd.args[0x01] = (state->dcur.frequency & 0xff0000) >> 16; |
| cmd.args[0x02] = (state->dcur.frequency & 0x00ff00) >> 8; |
| cmd.args[0x03] = (state->dcur.frequency & 0x0000ff); |
| |
| /* Symbol Rate */ |
| cmd.args[0x04] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8; |
| cmd.args[0x05] = ((state->dcur.symbol_rate / 1000) & 0x00ff); |
| |
| /* Automatic Inversion */ |
| cmd.args[0x06] = state->dcur.inversion_val; |
| |
| /* Modulation / FEC & Pilot Off */ |
| cmd.args[0x07] = state->dcur.fec_val; |
| |
| if (c->pilot == PILOT_ON) |
| cmd.args[0x07] |= 0x40; |
| |
| cmd.args[0x08] = CX24116_SEARCH_RANGE_KHZ >> 8; |
| cmd.args[0x09] = CX24116_SEARCH_RANGE_KHZ & 0xff; |
| cmd.args[0x0a] = 0x00; |
| cmd.args[0x0b] = 0x00; |
| cmd.args[0x0c] = 0x02; |
| cmd.args[0x0d] = state->dcur.fec_mask; |
| cmd.args[0x0e] = 0x06; |
| cmd.args[0x0f] = 0x00; |
| cmd.args[0x10] = 0x00; |
| cmd.args[0x11] = 0xFA; |
| cmd.args[0x12] = 0x24; |
| cmd.len= 0x13; |
| |
| /* We need to support pilot and non-pilot tuning in the |
| * driver automatically. This is a workaround for because |
| * the demod does not support autodetect. |
| */ |
| do { |
| /* Reset status register? */ |
| cx24116_writereg(state, 0x9d, 0xc1); |
| |
| /* Tune */ |
| ret = cx24116_cmd_execute(fe, &cmd); |
| if( ret != 0 ) |
| break; |
| |
| /* The hardware can take time to lock, wait a while */ |
| msleep(500); |
| |
| cx24116_read_status(fe, &tunerstat); |
| if(tunerstat & FE_HAS_SIGNAL) { |
| if(tunerstat & FE_HAS_SYNC) |
| /* Tuned */ |
| break; |
| else if(c->pilot == PILOT_AUTO) |
| /* Toggle pilot bit */ |
| cmd.args[0x07] ^= 0x40; |
| } |
| } |
| while(--retune); |
| |
| return ret; |
| } |
| |
| static struct dvb_frontend_ops cx24116_ops = { |
| |
| .info = { |
| .name = "Conexant CX24116/CX24118", |
| .type = FE_QPSK, |
| .frequency_min = 950000, |
| .frequency_max = 2150000, |
| .frequency_stepsize = 1011, /* kHz for QPSK frontends */ |
| .frequency_tolerance = 5000, |
| .symbol_rate_min = 1000000, |
| .symbol_rate_max = 45000000, |
| .caps = FE_CAN_INVERSION_AUTO | |
| FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
| FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 | |
| FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | |
| FE_CAN_QPSK | FE_CAN_RECOVER |
| }, |
| |
| .release = cx24116_release, |
| |
| .init = cx24116_initfe, |
| .read_status = cx24116_read_status, |
| .read_ber = cx24116_read_ber, |
| .read_signal_strength = cx24116_read_signal_strength, |
| .read_snr = cx24116_read_snr, |
| .read_ucblocks = cx24116_read_ucblocks, |
| .set_tone = cx24116_set_tone, |
| .set_voltage = cx24116_set_voltage, |
| .diseqc_send_master_cmd = cx24116_send_diseqc_msg, |
| .diseqc_send_burst = cx24116_diseqc_send_burst, |
| |
| .set_property = cx24116_set_property, |
| .set_params = cx24116_set_params, |
| .set_frontend = cx24116_set_frontend, |
| }; |
| |
| module_param(debug, int, 0644); |
| MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)"); |
| |
| MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24116/cx24118 hardware"); |
| MODULE_AUTHOR("Steven Toth"); |
| MODULE_LICENSE("GPL"); |
| |
| EXPORT_SYMBOL(cx24116_attach); |