| /* |
| * Support for OR51211 (pcHDTV HD-2000) - VSB |
| * |
| * Copyright (C) 2005 Kirk Lapray <kirk_lapray@bigfoot.com> |
| * |
| * Based on code from Jack Kelliher (kelliher@xmission.com) |
| * Copyright (C) 2002 & pcHDTV, inc. |
| * |
| * 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. |
| * |
| */ |
| |
| /* |
| * This driver needs external firmware. Please use the command |
| * "<kerneldir>/Documentation/dvb/get_dvb_firmware or51211" to |
| * download/extract it, and then copy it to /usr/lib/hotplug/firmware. |
| */ |
| #define OR51211_DEFAULT_FIRMWARE "dvb-fe-or51211.fw" |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/device.h> |
| #include <linux/firmware.h> |
| #include <asm/byteorder.h> |
| |
| #include "dvb_frontend.h" |
| #include "or51211.h" |
| |
| static int debug; |
| #define dprintk(args...) \ |
| do { \ |
| if (debug) printk(KERN_DEBUG "or51211: " args); \ |
| } while (0) |
| |
| static u8 run_buf[] = {0x7f,0x01}; |
| static u8 cmd_buf[] = {0x04,0x01,0x50,0x80,0x06}; // ATSC |
| |
| struct or51211_state { |
| |
| struct i2c_adapter* i2c; |
| struct dvb_frontend_ops ops; |
| |
| /* Configuration settings */ |
| const struct or51211_config* config; |
| |
| struct dvb_frontend frontend; |
| struct bt878* bt; |
| |
| /* Demodulator private data */ |
| u8 initialized:1; |
| |
| /* Tuner private data */ |
| u32 current_frequency; |
| }; |
| |
| static int i2c_writebytes (struct or51211_state* state, u8 reg, u8 *buf, |
| int len) |
| { |
| int err; |
| struct i2c_msg msg; |
| msg.addr = reg; |
| msg.flags = 0; |
| msg.len = len; |
| msg.buf = buf; |
| |
| if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) { |
| printk(KERN_WARNING "or51211: i2c_writebytes error " |
| "(addr %02x, err == %i)\n", reg, err); |
| return -EREMOTEIO; |
| } |
| |
| return 0; |
| } |
| |
| static u8 i2c_readbytes (struct or51211_state* state, u8 reg, u8* buf, int len) |
| { |
| int err; |
| struct i2c_msg msg; |
| msg.addr = reg; |
| msg.flags = I2C_M_RD; |
| msg.len = len; |
| msg.buf = buf; |
| |
| if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) { |
| printk(KERN_WARNING "or51211: i2c_readbytes error " |
| "(addr %02x, err == %i)\n", reg, err); |
| return -EREMOTEIO; |
| } |
| |
| return 0; |
| } |
| |
| static int or51211_load_firmware (struct dvb_frontend* fe, |
| const struct firmware *fw) |
| { |
| struct or51211_state* state = fe->demodulator_priv; |
| u8 tudata[585]; |
| int i; |
| |
| dprintk("Firmware is %d bytes\n",fw->size); |
| |
| /* Get eprom data */ |
| tudata[0] = 17; |
| if (i2c_writebytes(state,0x50,tudata,1)) { |
| printk(KERN_WARNING "or51211:load_firmware error eprom addr\n"); |
| return -1; |
| } |
| if (i2c_readbytes(state,0x50,&tudata[145],192)) { |
| printk(KERN_WARNING "or51211: load_firmware error eprom\n"); |
| return -1; |
| } |
| |
| /* Create firmware buffer */ |
| for (i = 0; i < 145; i++) |
| tudata[i] = fw->data[i]; |
| |
| for (i = 0; i < 248; i++) |
| tudata[i+337] = fw->data[145+i]; |
| |
| state->config->reset(fe); |
| |
| if (i2c_writebytes(state,state->config->demod_address,tudata,585)) { |
| printk(KERN_WARNING "or51211: load_firmware error 1\n"); |
| return -1; |
| } |
| msleep(1); |
| |
| if (i2c_writebytes(state,state->config->demod_address, |
| &fw->data[393],8125)) { |
| printk(KERN_WARNING "or51211: load_firmware error 2\n"); |
| return -1; |
| } |
| msleep(1); |
| |
| if (i2c_writebytes(state,state->config->demod_address,run_buf,2)) { |
| printk(KERN_WARNING "or51211: load_firmware error 3\n"); |
| return -1; |
| } |
| |
| /* Wait at least 5 msec */ |
| msleep(10); |
| if (i2c_writebytes(state,state->config->demod_address,run_buf,2)) { |
| printk(KERN_WARNING "or51211: load_firmware error 4\n"); |
| return -1; |
| } |
| msleep(10); |
| |
| printk("or51211: Done.\n"); |
| return 0; |
| }; |
| |
| static int or51211_setmode(struct dvb_frontend* fe, int mode) |
| { |
| struct or51211_state* state = fe->demodulator_priv; |
| u8 rec_buf[14]; |
| |
| state->config->setmode(fe, mode); |
| |
| if (i2c_writebytes(state,state->config->demod_address,run_buf,2)) { |
| printk(KERN_WARNING "or51211: setmode error 1\n"); |
| return -1; |
| } |
| |
| /* Wait at least 5 msec */ |
| msleep(10); |
| if (i2c_writebytes(state,state->config->demod_address,run_buf,2)) { |
| printk(KERN_WARNING "or51211: setmode error 2\n"); |
| return -1; |
| } |
| |
| msleep(10); |
| |
| /* Set operation mode in Receiver 1 register; |
| * type 1: |
| * data 0x50h Automatic sets receiver channel conditions |
| * Automatic NTSC rejection filter |
| * Enable MPEG serial data output |
| * MPEG2tr |
| * High tuner phase noise |
| * normal +/-150kHz Carrier acquisition range |
| */ |
| if (i2c_writebytes(state,state->config->demod_address,cmd_buf,3)) { |
| printk(KERN_WARNING "or51211: setmode error 3\n"); |
| return -1; |
| } |
| |
| rec_buf[0] = 0x04; |
| rec_buf[1] = 0x00; |
| rec_buf[2] = 0x03; |
| rec_buf[3] = 0x00; |
| msleep(20); |
| if (i2c_writebytes(state,state->config->demod_address,rec_buf,3)) { |
| printk(KERN_WARNING "or51211: setmode error 5\n"); |
| } |
| msleep(3); |
| if (i2c_readbytes(state,state->config->demod_address,&rec_buf[10],2)) { |
| printk(KERN_WARNING "or51211: setmode error 6"); |
| return -1; |
| } |
| dprintk("setmode rec status %02x %02x\n",rec_buf[10],rec_buf[11]); |
| |
| return 0; |
| } |
| |
| static int or51211_set_parameters(struct dvb_frontend* fe, |
| struct dvb_frontend_parameters *param) |
| { |
| struct or51211_state* state = fe->demodulator_priv; |
| u32 freq = 0; |
| u16 tunerfreq = 0; |
| u8 buf[4]; |
| |
| /* Change only if we are actually changing the channel */ |
| if (state->current_frequency != param->frequency) { |
| freq = 44000 + (param->frequency/1000); |
| tunerfreq = freq * 16/1000; |
| |
| dprintk("set_parameters frequency = %d (tunerfreq = %d)\n", |
| param->frequency,tunerfreq); |
| |
| buf[0] = (tunerfreq >> 8) & 0x7F; |
| buf[1] = (tunerfreq & 0xFF); |
| buf[2] = 0x8E; |
| |
| if (param->frequency < 157250000) { |
| buf[3] = 0xA0; |
| dprintk("set_parameters VHF low range\n"); |
| } else if (param->frequency < 454000000) { |
| buf[3] = 0x90; |
| dprintk("set_parameters VHF high range\n"); |
| } else { |
| buf[3] = 0x30; |
| dprintk("set_parameters UHF range\n"); |
| } |
| dprintk("set_parameters tuner bytes: 0x%02x 0x%02x " |
| "0x%02x 0x%02x\n",buf[0],buf[1],buf[2],buf[3]); |
| |
| if (i2c_writebytes(state,0xC2>>1,buf,4)) |
| printk(KERN_WARNING "or51211:set_parameters error " |
| "writing to tuner\n"); |
| |
| /* Set to ATSC mode */ |
| or51211_setmode(fe,0); |
| |
| /* Update current frequency */ |
| state->current_frequency = param->frequency; |
| } |
| return 0; |
| } |
| |
| static int or51211_read_status(struct dvb_frontend* fe, fe_status_t* status) |
| { |
| struct or51211_state* state = fe->demodulator_priv; |
| unsigned char rec_buf[2]; |
| unsigned char snd_buf[] = {0x04,0x00,0x03,0x00}; |
| *status = 0; |
| |
| /* Receiver Status */ |
| if (i2c_writebytes(state,state->config->demod_address,snd_buf,3)) { |
| printk(KERN_WARNING "or51132: read_status write error\n"); |
| return -1; |
| } |
| msleep(3); |
| if (i2c_readbytes(state,state->config->demod_address,rec_buf,2)) { |
| printk(KERN_WARNING "or51132: read_status read error\n"); |
| return -1; |
| } |
| dprintk("read_status %x %x\n",rec_buf[0],rec_buf[1]); |
| |
| if (rec_buf[0] & 0x01) { /* Receiver Lock */ |
| *status |= FE_HAS_SIGNAL; |
| *status |= FE_HAS_CARRIER; |
| *status |= FE_HAS_VITERBI; |
| *status |= FE_HAS_SYNC; |
| *status |= FE_HAS_LOCK; |
| } |
| return 0; |
| } |
| |
| /* log10-1 table at .5 increments from 1 to 100.5 */ |
| static unsigned int i100x20log10[] = { |
| 0, 352, 602, 795, 954, 1088, 1204, 1306, 1397, 1480, |
| 1556, 1625, 1690, 1750, 1806, 1858, 1908, 1955, 2000, 2042, |
| 2082, 2121, 2158, 2193, 2227, 2260, 2292, 2322, 2352, 2380, |
| 2408, 2434, 2460, 2486, 2510, 2534, 2557, 2580, 2602, 2623, |
| 2644, 2664, 2684, 2704, 2723, 2742, 2760, 2778, 2795, 2813, |
| 2829, 2846, 2862, 2878, 2894, 2909, 2924, 2939, 2954, 2968, |
| 2982, 2996, 3010, 3023, 3037, 3050, 3062, 3075, 3088, 3100, |
| 3112, 3124, 3136, 3148, 3159, 3170, 3182, 3193, 3204, 3214, |
| 3225, 3236, 3246, 3256, 3266, 3276, 3286, 3296, 3306, 3316, |
| 3325, 3334, 3344, 3353, 3362, 3371, 3380, 3389, 3397, 3406, |
| 3415, 3423, 3432, 3440, 3448, 3456, 3464, 3472, 3480, 3488, |
| 3496, 3504, 3511, 3519, 3526, 3534, 3541, 3549, 3556, 3563, |
| 3570, 3577, 3584, 3591, 3598, 3605, 3612, 3619, 3625, 3632, |
| 3639, 3645, 3652, 3658, 3665, 3671, 3677, 3683, 3690, 3696, |
| 3702, 3708, 3714, 3720, 3726, 3732, 3738, 3744, 3750, 3755, |
| 3761, 3767, 3772, 3778, 3784, 3789, 3795, 3800, 3806, 3811, |
| 3816, 3822, 3827, 3832, 3838, 3843, 3848, 3853, 3858, 3863, |
| 3868, 3874, 3879, 3884, 3888, 3893, 3898, 3903, 3908, 3913, |
| 3918, 3922, 3927, 3932, 3936, 3941, 3946, 3950, 3955, 3960, |
| 3964, 3969, 3973, 3978, 3982, 3986, 3991, 3995, 4000, 4004, |
| }; |
| |
| static unsigned int denom[] = {1,1,100,1000,10000,100000,1000000,10000000,100000000}; |
| |
| static unsigned int i20Log10(unsigned short val) |
| { |
| unsigned int rntval = 100; |
| unsigned int tmp = val; |
| unsigned int exp = 1; |
| |
| while(tmp > 100) {tmp /= 100; exp++;} |
| |
| val = (2 * val)/denom[exp]; |
| if (exp > 1) rntval = 2000*exp; |
| |
| rntval += i100x20log10[val]; |
| return rntval; |
| } |
| |
| static int or51211_read_signal_strength(struct dvb_frontend* fe, u16* strength) |
| { |
| struct or51211_state* state = fe->demodulator_priv; |
| u8 rec_buf[2]; |
| u8 snd_buf[4]; |
| u8 snr_equ; |
| |
| /* SNR after Equalizer */ |
| snd_buf[0] = 0x04; |
| snd_buf[1] = 0x00; |
| snd_buf[2] = 0x04; |
| snd_buf[3] = 0x00; |
| |
| if (i2c_writebytes(state,state->config->demod_address,snd_buf,3)) { |
| printk(KERN_WARNING "or51211: read_status write error\n"); |
| return -1; |
| } |
| msleep(3); |
| if (i2c_readbytes(state,state->config->demod_address,rec_buf,2)) { |
| printk(KERN_WARNING "or51211: read_status read error\n"); |
| return -1; |
| } |
| snr_equ = rec_buf[0] & 0xff; |
| |
| /* The value reported back from the frontend will be FFFF=100% 0000=0% */ |
| *strength = (((5334 - i20Log10(snr_equ))/3+5)*65535)/1000; |
| |
| dprintk("read_signal_strength %i\n",*strength); |
| |
| return 0; |
| } |
| |
| static int or51211_read_snr(struct dvb_frontend* fe, u16* snr) |
| { |
| struct or51211_state* state = fe->demodulator_priv; |
| u8 rec_buf[2]; |
| u8 snd_buf[4]; |
| |
| /* SNR after Equalizer */ |
| snd_buf[0] = 0x04; |
| snd_buf[1] = 0x00; |
| snd_buf[2] = 0x04; |
| snd_buf[3] = 0x00; |
| |
| if (i2c_writebytes(state,state->config->demod_address,snd_buf,3)) { |
| printk(KERN_WARNING "or51211: read_status write error\n"); |
| return -1; |
| } |
| msleep(3); |
| if (i2c_readbytes(state,state->config->demod_address,rec_buf,2)) { |
| printk(KERN_WARNING "or51211: read_status read error\n"); |
| return -1; |
| } |
| *snr = rec_buf[0] & 0xff; |
| |
| dprintk("read_snr %i\n",*snr); |
| |
| return 0; |
| } |
| |
| static int or51211_read_ber(struct dvb_frontend* fe, u32* ber) |
| { |
| *ber = -ENOSYS; |
| return 0; |
| } |
| |
| static int or51211_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) |
| { |
| *ucblocks = -ENOSYS; |
| return 0; |
| } |
| |
| static int or51211_sleep(struct dvb_frontend* fe) |
| { |
| return 0; |
| } |
| |
| static int or51211_init(struct dvb_frontend* fe) |
| { |
| struct or51211_state* state = fe->demodulator_priv; |
| const struct or51211_config* config = state->config; |
| const struct firmware* fw; |
| unsigned char get_ver_buf[] = {0x04,0x00,0x30,0x00,0x00}; |
| unsigned char rec_buf[14]; |
| int ret,i; |
| |
| if (!state->initialized) { |
| /* Request the firmware, this will block until it uploads */ |
| printk(KERN_INFO "or51211: Waiting for firmware upload " |
| "(%s)...\n", OR51211_DEFAULT_FIRMWARE); |
| ret = config->request_firmware(fe, &fw, |
| OR51211_DEFAULT_FIRMWARE); |
| printk(KERN_INFO "or51211:Got Hotplug firmware\n"); |
| if (ret) { |
| printk(KERN_WARNING "or51211: No firmware uploaded " |
| "(timeout or file not found?)\n"); |
| return ret; |
| } |
| |
| ret = or51211_load_firmware(fe, fw); |
| if (ret) { |
| printk(KERN_WARNING "or51211: Writing firmware to " |
| "device failed!\n"); |
| release_firmware(fw); |
| return ret; |
| } |
| printk(KERN_INFO "or51211: Firmware upload complete.\n"); |
| |
| /* Set operation mode in Receiver 1 register; |
| * type 1: |
| * data 0x50h Automatic sets receiver channel conditions |
| * Automatic NTSC rejection filter |
| * Enable MPEG serial data output |
| * MPEG2tr |
| * High tuner phase noise |
| * normal +/-150kHz Carrier acquisition range |
| */ |
| if (i2c_writebytes(state,state->config->demod_address, |
| cmd_buf,3)) { |
| printk(KERN_WARNING "or51211: Load DVR Error 5\n"); |
| return -1; |
| } |
| |
| /* Read back ucode version to besure we loaded correctly */ |
| /* and are really up and running */ |
| rec_buf[0] = 0x04; |
| rec_buf[1] = 0x00; |
| rec_buf[2] = 0x03; |
| rec_buf[3] = 0x00; |
| msleep(30); |
| if (i2c_writebytes(state,state->config->demod_address, |
| rec_buf,3)) { |
| printk(KERN_WARNING "or51211: Load DVR Error A\n"); |
| return -1; |
| } |
| msleep(3); |
| if (i2c_readbytes(state,state->config->demod_address, |
| &rec_buf[10],2)) { |
| printk(KERN_WARNING "or51211: Load DVR Error B\n"); |
| return -1; |
| } |
| |
| rec_buf[0] = 0x04; |
| rec_buf[1] = 0x00; |
| rec_buf[2] = 0x01; |
| rec_buf[3] = 0x00; |
| msleep(20); |
| if (i2c_writebytes(state,state->config->demod_address, |
| rec_buf,3)) { |
| printk(KERN_WARNING "or51211: Load DVR Error C\n"); |
| return -1; |
| } |
| msleep(3); |
| if (i2c_readbytes(state,state->config->demod_address, |
| &rec_buf[12],2)) { |
| printk(KERN_WARNING "or51211: Load DVR Error D\n"); |
| return -1; |
| } |
| |
| for (i = 0; i < 8; i++) |
| rec_buf[i]=0xed; |
| |
| for (i = 0; i < 5; i++) { |
| msleep(30); |
| get_ver_buf[4] = i+1; |
| if (i2c_writebytes(state,state->config->demod_address, |
| get_ver_buf,5)) { |
| printk(KERN_WARNING "or51211:Load DVR Error 6" |
| " - %d\n",i); |
| return -1; |
| } |
| msleep(3); |
| |
| if (i2c_readbytes(state,state->config->demod_address, |
| &rec_buf[i*2],2)) { |
| printk(KERN_WARNING "or51211:Load DVR Error 7" |
| " - %d\n",i); |
| return -1; |
| } |
| /* If we didn't receive the right index, try again */ |
| if ((int)rec_buf[i*2+1]!=i+1){ |
| i--; |
| } |
| } |
| dprintk("read_fwbits %x %x %x %x %x %x %x %x %x %x\n", |
| rec_buf[0], rec_buf[1], rec_buf[2], rec_buf[3], |
| rec_buf[4], rec_buf[5], rec_buf[6], rec_buf[7], |
| rec_buf[8], rec_buf[9]); |
| |
| printk(KERN_INFO "or51211: ver TU%02x%02x%02x VSB mode %02x" |
| " Status %02x\n", |
| rec_buf[2], rec_buf[4],rec_buf[6], |
| rec_buf[12],rec_buf[10]); |
| |
| rec_buf[0] = 0x04; |
| rec_buf[1] = 0x00; |
| rec_buf[2] = 0x03; |
| rec_buf[3] = 0x00; |
| msleep(20); |
| if (i2c_writebytes(state,state->config->demod_address, |
| rec_buf,3)) { |
| printk(KERN_WARNING "or51211: Load DVR Error 8\n"); |
| return -1; |
| } |
| msleep(20); |
| if (i2c_readbytes(state,state->config->demod_address, |
| &rec_buf[8],2)) { |
| printk(KERN_WARNING "or51211: Load DVR Error 9\n"); |
| return -1; |
| } |
| state->initialized = 1; |
| } |
| |
| return 0; |
| } |
| |
| static int or51211_get_tune_settings(struct dvb_frontend* fe, |
| struct dvb_frontend_tune_settings* fesettings) |
| { |
| fesettings->min_delay_ms = 500; |
| fesettings->step_size = 0; |
| fesettings->max_drift = 0; |
| return 0; |
| } |
| |
| static void or51211_release(struct dvb_frontend* fe) |
| { |
| struct or51211_state* state = fe->demodulator_priv; |
| state->config->sleep(fe); |
| kfree(state); |
| } |
| |
| static struct dvb_frontend_ops or51211_ops; |
| |
| struct dvb_frontend* or51211_attach(const struct or51211_config* config, |
| struct i2c_adapter* i2c) |
| { |
| struct or51211_state* state = NULL; |
| |
| /* Allocate memory for the internal state */ |
| state = kmalloc(sizeof(struct or51211_state), GFP_KERNEL); |
| if (state == NULL) |
| goto error; |
| |
| /* Setup the state */ |
| state->config = config; |
| state->i2c = i2c; |
| memcpy(&state->ops, &or51211_ops, sizeof(struct dvb_frontend_ops)); |
| state->initialized = 0; |
| state->current_frequency = 0; |
| |
| /* Create dvb_frontend */ |
| state->frontend.ops = &state->ops; |
| state->frontend.demodulator_priv = state; |
| return &state->frontend; |
| |
| error: |
| kfree(state); |
| return NULL; |
| } |
| |
| static struct dvb_frontend_ops or51211_ops = { |
| |
| .info = { |
| .name = "Oren OR51211 VSB Frontend", |
| .type = FE_ATSC, |
| .frequency_min = 44000000, |
| .frequency_max = 958000000, |
| .frequency_stepsize = 166666, |
| .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
| FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | |
| FE_CAN_8VSB |
| }, |
| |
| .release = or51211_release, |
| |
| .init = or51211_init, |
| .sleep = or51211_sleep, |
| |
| .set_frontend = or51211_set_parameters, |
| .get_tune_settings = or51211_get_tune_settings, |
| |
| .read_status = or51211_read_status, |
| .read_ber = or51211_read_ber, |
| .read_signal_strength = or51211_read_signal_strength, |
| .read_snr = or51211_read_snr, |
| .read_ucblocks = or51211_read_ucblocks, |
| }; |
| |
| module_param(debug, int, 0644); |
| MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); |
| |
| MODULE_DESCRIPTION("Oren OR51211 VSB [pcHDTV HD-2000] Demodulator Driver"); |
| MODULE_AUTHOR("Kirk Lapray"); |
| MODULE_LICENSE("GPL"); |
| |
| EXPORT_SYMBOL(or51211_attach); |
| |