diff options
Diffstat (limited to 'drivers/media/dvb/frontends/tda1004x.c')
| -rw-r--r-- | drivers/media/dvb/frontends/tda1004x.c | 1206 |
1 files changed, 1206 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/tda1004x.c b/drivers/media/dvb/frontends/tda1004x.c new file mode 100644 index 000000000000..687ad9cf3384 --- /dev/null +++ b/drivers/media/dvb/frontends/tda1004x.c @@ -0,0 +1,1206 @@ + /* + Driver for Philips tda1004xh OFDM Demodulator + + (c) 2003, 2004 Andrew de Quincey & Robert Schlabbach + + 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 commands + * "<kerneldir>/Documentation/dvb/get_dvb_firmware tda10045", + * "<kerneldir>/Documentation/dvb/get_dvb_firmware tda10046" to + * download/extract them, and then copy them to /usr/lib/hotplug/firmware. + */ +#define TDA10045_DEFAULT_FIRMWARE "dvb-fe-tda10045.fw" +#define TDA10046_DEFAULT_FIRMWARE "dvb-fe-tda10046.fw" + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/device.h> +#include "dvb_frontend.h" +#include "tda1004x.h" + +#define TDA1004X_DEMOD_TDA10045 0 +#define TDA1004X_DEMOD_TDA10046 1 + + +struct tda1004x_state { + struct i2c_adapter* i2c; + struct dvb_frontend_ops ops; + const struct tda1004x_config* config; + struct dvb_frontend frontend; + + /* private demod data */ + u8 initialised:1; + u8 demod_type; +}; + + +static int debug; +#define dprintk(args...) \ + do { \ + if (debug) printk(KERN_DEBUG "tda1004x: " args); \ + } while (0) + +#define TDA1004X_CHIPID 0x00 +#define TDA1004X_AUTO 0x01 +#define TDA1004X_IN_CONF1 0x02 +#define TDA1004X_IN_CONF2 0x03 +#define TDA1004X_OUT_CONF1 0x04 +#define TDA1004X_OUT_CONF2 0x05 +#define TDA1004X_STATUS_CD 0x06 +#define TDA1004X_CONFC4 0x07 +#define TDA1004X_DSSPARE2 0x0C +#define TDA10045H_CODE_IN 0x0D +#define TDA10045H_FWPAGE 0x0E +#define TDA1004X_SCAN_CPT 0x10 +#define TDA1004X_DSP_CMD 0x11 +#define TDA1004X_DSP_ARG 0x12 +#define TDA1004X_DSP_DATA1 0x13 +#define TDA1004X_DSP_DATA2 0x14 +#define TDA1004X_CONFADC1 0x15 +#define TDA1004X_CONFC1 0x16 +#define TDA10045H_S_AGC 0x1a +#define TDA10046H_AGC_TUN_LEVEL 0x1a +#define TDA1004X_SNR 0x1c +#define TDA1004X_CONF_TS1 0x1e +#define TDA1004X_CONF_TS2 0x1f +#define TDA1004X_CBER_RESET 0x20 +#define TDA1004X_CBER_MSB 0x21 +#define TDA1004X_CBER_LSB 0x22 +#define TDA1004X_CVBER_LUT 0x23 +#define TDA1004X_VBER_MSB 0x24 +#define TDA1004X_VBER_MID 0x25 +#define TDA1004X_VBER_LSB 0x26 +#define TDA1004X_UNCOR 0x27 + +#define TDA10045H_CONFPLL_P 0x2D +#define TDA10045H_CONFPLL_M_MSB 0x2E +#define TDA10045H_CONFPLL_M_LSB 0x2F +#define TDA10045H_CONFPLL_N 0x30 + +#define TDA10046H_CONFPLL1 0x2D +#define TDA10046H_CONFPLL2 0x2F +#define TDA10046H_CONFPLL3 0x30 +#define TDA10046H_TIME_WREF1 0x31 +#define TDA10046H_TIME_WREF2 0x32 +#define TDA10046H_TIME_WREF3 0x33 +#define TDA10046H_TIME_WREF4 0x34 +#define TDA10046H_TIME_WREF5 0x35 + +#define TDA10045H_UNSURW_MSB 0x31 +#define TDA10045H_UNSURW_LSB 0x32 +#define TDA10045H_WREF_MSB 0x33 +#define TDA10045H_WREF_MID 0x34 +#define TDA10045H_WREF_LSB 0x35 +#define TDA10045H_MUXOUT 0x36 +#define TDA1004X_CONFADC2 0x37 + +#define TDA10045H_IOFFSET 0x38 + +#define TDA10046H_CONF_TRISTATE1 0x3B +#define TDA10046H_CONF_TRISTATE2 0x3C +#define TDA10046H_CONF_POLARITY 0x3D +#define TDA10046H_FREQ_OFFSET 0x3E +#define TDA10046H_GPIO_OUT_SEL 0x41 +#define TDA10046H_GPIO_SELECT 0x42 +#define TDA10046H_AGC_CONF 0x43 +#define TDA10046H_AGC_GAINS 0x46 +#define TDA10046H_AGC_TUN_MIN 0x47 +#define TDA10046H_AGC_TUN_MAX 0x48 +#define TDA10046H_AGC_IF_MIN 0x49 +#define TDA10046H_AGC_IF_MAX 0x4A + +#define TDA10046H_FREQ_PHY2_MSB 0x4D +#define TDA10046H_FREQ_PHY2_LSB 0x4E + +#define TDA10046H_CVBER_CTRL 0x4F +#define TDA10046H_AGC_IF_LEVEL 0x52 +#define TDA10046H_CODE_CPT 0x57 +#define TDA10046H_CODE_IN 0x58 + + +static int tda1004x_write_byteI(struct tda1004x_state *state, int reg, int data) +{ + int ret; + u8 buf[] = { reg, data }; + struct i2c_msg msg = { .addr=0, .flags=0, .buf=buf, .len=2 }; + + dprintk("%s: reg=0x%x, data=0x%x\n", __FUNCTION__, reg, data); + + msg.addr = state->config->demod_address; + ret = i2c_transfer(state->i2c, &msg, 1); + + if (ret != 1) + dprintk("%s: error reg=0x%x, data=0x%x, ret=%i\n", + __FUNCTION__, reg, data, ret); + + dprintk("%s: success reg=0x%x, data=0x%x, ret=%i\n", __FUNCTION__, + reg, data, ret); + return (ret != 1) ? -1 : 0; +} + +static int tda1004x_read_byte(struct tda1004x_state *state, int reg) +{ + int ret; + u8 b0[] = { reg }; + u8 b1[] = { 0 }; + struct i2c_msg msg[] = {{ .addr=0, .flags=0, .buf=b0, .len=1}, + { .addr=0, .flags=I2C_M_RD, .buf=b1, .len = 1}}; + + dprintk("%s: reg=0x%x\n", __FUNCTION__, reg); + + msg[0].addr = state->config->demod_address; + msg[1].addr = state->config->demod_address; + ret = i2c_transfer(state->i2c, msg, 2); + + if (ret != 2) { + dprintk("%s: error reg=0x%x, ret=%i\n", __FUNCTION__, reg, + ret); + return -1; + } + + dprintk("%s: success reg=0x%x, data=0x%x, ret=%i\n", __FUNCTION__, + reg, b1[0], ret); + return b1[0]; +} + +static int tda1004x_write_mask(struct tda1004x_state *state, int reg, int mask, int data) +{ + int val; + dprintk("%s: reg=0x%x, mask=0x%x, data=0x%x\n", __FUNCTION__, reg, + mask, data); + + // read a byte and check + val = tda1004x_read_byte(state, reg); + if (val < 0) + return val; + + // mask if off + val = val & ~mask; + val |= data & 0xff; + + // write it out again + return tda1004x_write_byteI(state, reg, val); +} + +static int tda1004x_write_buf(struct tda1004x_state *state, int reg, unsigned char *buf, int len) +{ + int i; + int result; + + dprintk("%s: reg=0x%x, len=0x%x\n", __FUNCTION__, reg, len); + + result = 0; + for (i = 0; i < len; i++) { + result = tda1004x_write_byteI(state, reg + i, buf[i]); + if (result != 0) + break; + } + + return result; +} + +static int tda1004x_enable_tuner_i2c(struct tda1004x_state *state) +{ + int result; + dprintk("%s\n", __FUNCTION__); + + result = tda1004x_write_mask(state, TDA1004X_CONFC4, 2, 2); + msleep(1); + return result; +} + +static int tda1004x_disable_tuner_i2c(struct tda1004x_state *state) +{ + dprintk("%s\n", __FUNCTION__); + + return tda1004x_write_mask(state, TDA1004X_CONFC4, 2, 0); +} + +static int tda10045h_set_bandwidth(struct tda1004x_state *state, + fe_bandwidth_t bandwidth) +{ + static u8 bandwidth_6mhz[] = { 0x02, 0x00, 0x3d, 0x00, 0x60, 0x1e, 0xa7, 0x45, 0x4f }; + static u8 bandwidth_7mhz[] = { 0x02, 0x00, 0x37, 0x00, 0x4a, 0x2f, 0x6d, 0x76, 0xdb }; + static u8 bandwidth_8mhz[] = { 0x02, 0x00, 0x3d, 0x00, 0x48, 0x17, 0x89, 0xc7, 0x14 }; + + switch (bandwidth) { + case BANDWIDTH_6_MHZ: + tda1004x_write_buf(state, TDA10045H_CONFPLL_P, bandwidth_6mhz, sizeof(bandwidth_6mhz)); + break; + + case BANDWIDTH_7_MHZ: + tda1004x_write_buf(state, TDA10045H_CONFPLL_P, bandwidth_7mhz, sizeof(bandwidth_7mhz)); + break; + + case BANDWIDTH_8_MHZ: + tda1004x_write_buf(state, TDA10045H_CONFPLL_P, bandwidth_8mhz, sizeof(bandwidth_8mhz)); + break; + + default: + return -EINVAL; + } + + tda1004x_write_byteI(state, TDA10045H_IOFFSET, 0); + + return 0; +} + +static int tda10046h_set_bandwidth(struct tda1004x_state *state, + fe_bandwidth_t bandwidth) +{ + static u8 bandwidth_6mhz[] = { 0x80, 0x15, 0xfe, 0xab, 0x8e }; + static u8 bandwidth_7mhz[] = { 0x6e, 0x02, 0x53, 0xc8, 0x25 }; + static u8 bandwidth_8mhz[] = { 0x60, 0x12, 0xa8, 0xe4, 0xbd }; + + switch (bandwidth) { + case BANDWIDTH_6_MHZ: + tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_6mhz, sizeof(bandwidth_6mhz)); + break; + + case BANDWIDTH_7_MHZ: + tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_7mhz, sizeof(bandwidth_7mhz)); + break; + + case BANDWIDTH_8_MHZ: + tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_8mhz, sizeof(bandwidth_8mhz)); + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int tda1004x_do_upload(struct tda1004x_state *state, + unsigned char *mem, unsigned int len, + u8 dspCodeCounterReg, u8 dspCodeInReg) +{ + u8 buf[65]; + struct i2c_msg fw_msg = {.addr = 0,.flags = 0,.buf = buf,.len = 0 }; + int tx_size; + int pos = 0; + + /* clear code counter */ + tda1004x_write_byteI(state, dspCodeCounterReg, 0); + fw_msg.addr = state->config->demod_address; + + buf[0] = dspCodeInReg; + while (pos != len) { + + // work out how much to send this time + tx_size = len - pos; + if (tx_size > 0x10) { + tx_size = 0x10; + } + + // send the chunk + memcpy(buf + 1, mem + pos, tx_size); + fw_msg.len = tx_size + 1; + if (i2c_transfer(state->i2c, &fw_msg, 1) != 1) { + printk("tda1004x: Error during firmware upload\n"); + return -EIO; + } + pos += tx_size; + + dprintk("%s: fw_pos=0x%x\n", __FUNCTION__, pos); + } + return 0; +} + +static int tda1004x_check_upload_ok(struct tda1004x_state *state, u8 dspVersion) +{ + u8 data1, data2; + + // check upload was OK + tda1004x_write_mask(state, TDA1004X_CONFC4, 0x10, 0); // we want to read from the DSP + tda1004x_write_byteI(state, TDA1004X_DSP_CMD, 0x67); + + data1 = tda1004x_read_byte(state, TDA1004X_DSP_DATA1); + data2 = tda1004x_read_byte(state, TDA1004X_DSP_DATA2); + if (data1 != 0x67 || data2 != dspVersion) { + return -EIO; + } + + return 0; +} + +static int tda10045_fwupload(struct dvb_frontend* fe) +{ + struct tda1004x_state* state = fe->demodulator_priv; + int ret; + const struct firmware *fw; + + + /* don't re-upload unless necessary */ + if (tda1004x_check_upload_ok(state, 0x2c) == 0) return 0; + + /* request the firmware, this will block until someone uploads it */ + printk("tda1004x: waiting for firmware upload (%s)...\n", TDA10045_DEFAULT_FIRMWARE); + ret = state->config->request_firmware(fe, &fw, TDA10045_DEFAULT_FIRMWARE); + if (ret) { + printk("tda1004x: no firmware upload (timeout or file not found?)\n"); + return ret; + } + + /* reset chip */ + tda1004x_write_mask(state, TDA1004X_CONFC4, 0x10, 0); + tda1004x_write_mask(state, TDA1004X_CONFC4, 8, 8); + tda1004x_write_mask(state, TDA1004X_CONFC4, 8, 0); + msleep(10); + + /* set parameters */ + tda10045h_set_bandwidth(state, BANDWIDTH_8_MHZ); + + ret = tda1004x_do_upload(state, fw->data, fw->size, TDA10045H_FWPAGE, TDA10045H_CODE_IN); + if (ret) + return ret; + printk("tda1004x: firmware upload complete\n"); + + /* wait for DSP to initialise */ + /* DSPREADY doesn't seem to work on the TDA10045H */ + msleep(100); + + return tda1004x_check_upload_ok(state, 0x2c); +} + +static int tda10046_fwupload(struct dvb_frontend* fe) +{ + struct tda1004x_state* state = fe->demodulator_priv; + unsigned long timeout; + int ret; + const struct firmware *fw; + + /* reset + wake up chip */ + tda1004x_write_mask(state, TDA1004X_CONFC4, 1, 0); + tda1004x_write_mask(state, TDA10046H_CONF_TRISTATE1, 1, 0); + msleep(100); + + /* don't re-upload unless necessary */ + if (tda1004x_check_upload_ok(state, 0x20) == 0) return 0; + + /* request the firmware, this will block until someone uploads it */ + printk("tda1004x: waiting for firmware upload (%s)...\n", TDA10046_DEFAULT_FIRMWARE); + ret = state->config->request_firmware(fe, &fw, TDA10046_DEFAULT_FIRMWARE); + if (ret) { + printk("tda1004x: no firmware upload (timeout or file not found?)\n"); + return ret; + } + + /* set parameters */ + tda1004x_write_byteI(state, TDA10046H_CONFPLL2, 10); + tda1004x_write_byteI(state, TDA10046H_CONFPLL3, 0); + tda1004x_write_byteI(state, TDA10046H_FREQ_OFFSET, 99); + tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0xd4); + tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0x2c); + tda1004x_write_mask(state, TDA1004X_CONFC4, 8, 8); // going to boot from HOST + + ret = tda1004x_do_upload(state, fw->data, fw->size, TDA10046H_CODE_CPT, TDA10046H_CODE_IN); + if (ret) + return ret; + printk("tda1004x: firmware upload complete\n"); + + /* wait for DSP to initialise */ + timeout = jiffies + HZ; + while(!(tda1004x_read_byte(state, TDA1004X_STATUS_CD) & 0x20)) { + if (time_after(jiffies, timeout)) { + printk("tda1004x: DSP failed to initialised.\n"); + return -EIO; + } + msleep(1); + } + + return tda1004x_check_upload_ok(state, 0x20); +} + +static int tda1004x_encode_fec(int fec) +{ + // convert known FEC values + switch (fec) { + case FEC_1_2: + return 0; + case FEC_2_3: + return 1; + case FEC_3_4: + return 2; + case FEC_5_6: + return 3; + case FEC_7_8: + return 4; + } + + // unsupported + return -EINVAL; +} + +static int tda1004x_decode_fec(int tdafec) +{ + // convert known FEC values + switch (tdafec) { + case 0: + return FEC_1_2; + case 1: + return FEC_2_3; + case 2: + return FEC_3_4; + case 3: + return FEC_5_6; + case 4: + return FEC_7_8; + } + + // unsupported + return -1; +} + +int tda1004x_write_byte(struct dvb_frontend* fe, int reg, int data) +{ + struct tda1004x_state* state = fe->demodulator_priv; + + return tda1004x_write_byteI(state, reg, data); +} + +static int tda10045_init(struct dvb_frontend* fe) +{ + struct tda1004x_state* state = fe->demodulator_priv; + + dprintk("%s\n", __FUNCTION__); + + if (state->initialised) return 0; + + if (tda10045_fwupload(fe)) { + printk("tda1004x: firmware upload failed\n"); + return -EIO; + } + + tda1004x_write_mask(state, TDA1004X_CONFADC1, 0x10, 0); // wake up the ADC + + // Init the PLL + if (state->config->pll_init) { + tda1004x_enable_tuner_i2c(state); + state->config->pll_init(fe); + tda1004x_disable_tuner_i2c(state); + } + + // tda setup + tda1004x_write_mask(state, TDA1004X_CONFC4, 0x20, 0); // disable DSP watchdog timer + tda1004x_write_mask(state, TDA1004X_AUTO, 8, 0); // select HP stream + tda1004x_write_mask(state, TDA1004X_CONFC1, 0x40, 0); // set polarity of VAGC signal + tda1004x_write_mask(state, TDA1004X_CONFC1, 0x80, 0x80); // enable pulse killer + tda1004x_write_mask(state, TDA1004X_AUTO, 0x10, 0x10); // enable auto offset + tda1004x_write_mask(state, TDA1004X_IN_CONF2, 0xC0, 0x0); // no frequency offset + tda1004x_write_byteI(state, TDA1004X_CONF_TS1, 0); // setup MPEG2 TS interface + tda1004x_write_byteI(state, TDA1004X_CONF_TS2, 0); // setup MPEG2 TS interface + tda1004x_write_mask(state, TDA1004X_VBER_MSB, 0xe0, 0xa0); // 10^6 VBER measurement bits + tda1004x_write_mask(state, TDA1004X_CONFC1, 0x10, 0); // VAGC polarity + tda1004x_write_byteI(state, TDA1004X_CONFADC1, 0x2e); + + tda1004x_write_mask(state, 0x1f, 0x01, state->config->invert_oclk); + + state->initialised = 1; + return 0; +} + +static int tda10046_init(struct dvb_frontend* fe) +{ + struct tda1004x_state* state = fe->demodulator_priv; + dprintk("%s\n", __FUNCTION__); + + if (state->initialised) return 0; + + if (tda10046_fwupload(fe)) { + printk("tda1004x: firmware upload failed\n"); + return -EIO; + } + + tda1004x_write_mask(state, TDA1004X_CONFC4, 1, 0); // wake up the chip + + // Init the PLL + if (state->config->pll_init) { + tda1004x_enable_tuner_i2c(state); + state->config->pll_init(fe); + tda1004x_disable_tuner_i2c(state); + } + + // tda setup + tda1004x_write_mask(state, TDA1004X_CONFC4, 0x20, 0); // disable DSP watchdog timer + tda1004x_write_mask(state, TDA1004X_CONFC1, 0x40, 0x40); + tda1004x_write_mask(state, TDA1004X_AUTO, 8, 0); // select HP stream + tda1004x_write_mask(state, TDA1004X_CONFC1, 0x80, 0); // disable pulse killer + tda1004x_write_byteI(state, TDA10046H_CONFPLL2, 10); // PLL M = 10 + tda1004x_write_byteI(state, TDA10046H_CONFPLL3, 0); // PLL P = N = 0 + tda1004x_write_byteI(state, TDA10046H_FREQ_OFFSET, 99); // FREQOFFS = 99 + tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0xd4); // } PHY2 = -11221 + tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0x2c); // } + tda1004x_write_byteI(state, TDA10046H_AGC_CONF, 0); // AGC setup + tda1004x_write_mask(state, TDA10046H_CONF_POLARITY, 0x60, 0x60); // set AGC polarities + tda1004x_write_byteI(state, TDA10046H_AGC_TUN_MIN, 0); // } + tda1004x_write_byteI(state, TDA10046H_AGC_TUN_MAX, 0xff); // } AGC min/max values + tda1004x_write_byteI(state, TDA10046H_AGC_IF_MIN, 0); // } + tda1004x_write_byteI(state, TDA10046H_AGC_IF_MAX, 0xff); // } + tda1004x_write_mask(state, TDA10046H_CVBER_CTRL, 0x30, 0x10); // 10^6 VBER measurement bits + tda1004x_write_byteI(state, TDA10046H_AGC_GAINS, 1); // IF gain 2, TUN gain 1 + tda1004x_write_mask(state, TDA1004X_AUTO, 0x80, 0); // crystal is 50ppm + tda1004x_write_byteI(state, TDA1004X_CONF_TS1, 7); // MPEG2 interface config + tda1004x_write_mask(state, TDA1004X_CONF_TS2, 0x31, 0); // MPEG2 interface config + tda1004x_write_mask(state, TDA10046H_CONF_TRISTATE1, 0x9e, 0); // disable AGC_TUN + tda1004x_write_byteI(state, TDA10046H_CONF_TRISTATE2, 0xe1); // tristate setup + tda1004x_write_byteI(state, TDA10046H_GPIO_OUT_SEL, 0xcc); // GPIO output config + tda1004x_write_mask(state, TDA10046H_GPIO_SELECT, 8, 8); // GPIO select + tda10046h_set_bandwidth(state, BANDWIDTH_8_MHZ); // default bandwidth 8 MHz + + tda1004x_write_mask(state, 0x3a, 0x80, state->config->invert_oclk << 7); + + state->initialised = 1; + return 0; +} + +static int tda1004x_set_fe(struct dvb_frontend* fe, + struct dvb_frontend_parameters *fe_params) +{ + struct tda1004x_state* state = fe->demodulator_priv; + int tmp; + int inversion; + + dprintk("%s\n", __FUNCTION__); + + if (state->demod_type == TDA1004X_DEMOD_TDA10046) { + // setup auto offset + tda1004x_write_mask(state, TDA1004X_AUTO, 0x10, 0x10); + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x80, 0); + tda1004x_write_mask(state, TDA1004X_IN_CONF2, 0xC0, 0); + + // disable agc_conf[2] + tda1004x_write_mask(state, TDA10046H_AGC_CONF, 4, 0); + } + + // set frequency + tda1004x_enable_tuner_i2c(state); + state->config->pll_set(fe, fe_params); + tda1004x_disable_tuner_i2c(state); + + if (state->demod_type == TDA1004X_DEMOD_TDA10046) + tda1004x_write_mask(state, TDA10046H_AGC_CONF, 4, 4); + + // Hardcoded to use auto as much as possible on the TDA10045 as it + // is very unreliable if AUTO mode is _not_ used. + if (state->demod_type == TDA1004X_DEMOD_TDA10045) { + fe_params->u.ofdm.code_rate_HP = FEC_AUTO; + fe_params->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO; + fe_params->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO; + } + + // Set standard params.. or put them to auto + if ((fe_params->u.ofdm.code_rate_HP == FEC_AUTO) || + (fe_params->u.ofdm.code_rate_LP == FEC_AUTO) || + (fe_params->u.ofdm.constellation == QAM_AUTO) || + (fe_params->u.ofdm.hierarchy_information == HIERARCHY_AUTO)) { + tda1004x_write_mask(state, TDA1004X_AUTO, 1, 1); // enable auto + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x03, 0); // turn off constellation bits + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x60, 0); // turn off hierarchy bits + tda1004x_write_mask(state, TDA1004X_IN_CONF2, 0x3f, 0); // turn off FEC bits + } else { + tda1004x_write_mask(state, TDA1004X_AUTO, 1, 0); // disable auto + + // set HP FEC + tmp = tda1004x_encode_fec(fe_params->u.ofdm.code_rate_HP); + if (tmp < 0) return tmp; + tda1004x_write_mask(state, TDA1004X_IN_CONF2, 7, tmp); + + // set LP FEC + tmp = tda1004x_encode_fec(fe_params->u.ofdm.code_rate_LP); + if (tmp < 0) return tmp; + tda1004x_write_mask(state, TDA1004X_IN_CONF2, 0x38, tmp << 3); + + // set constellation + switch (fe_params->u.ofdm.constellation) { + case QPSK: + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 3, 0); + break; + + case QAM_16: + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 3, 1); + break; + + case QAM_64: + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 3, 2); + break; + + default: + return -EINVAL; + } + + // set hierarchy + switch (fe_params->u.ofdm.hierarchy_information) { + case HIERARCHY_NONE: + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x60, 0 << 5); + break; + + case HIERARCHY_1: + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x60, 1 << 5); + break; + + case HIERARCHY_2: + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x60, 2 << 5); + break; + + case HIERARCHY_4: + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x60, 3 << 5); + break; + + default: + return -EINVAL; + } + } + + // set bandwidth + switch(state->demod_type) { + case TDA1004X_DEMOD_TDA10045: + tda10045h_set_bandwidth(state, fe_params->u.ofdm.bandwidth); + break; + + case TDA1004X_DEMOD_TDA10046: + tda10046h_set_bandwidth(state, fe_params->u.ofdm.bandwidth); + break; + } + + // set inversion + inversion = fe_params->inversion; + if (state->config->invert) inversion = inversion ? INVERSION_OFF : INVERSION_ON; + switch (inversion) { + case INVERSION_OFF: + tda1004x_write_mask(state, TDA1004X_CONFC1, 0x20, 0); + break; + + case INVERSION_ON: + tda1004x_write_mask(state, TDA1004X_CONFC1, 0x20, 0x20); + break; + + default: + return -EINVAL; + } + + // set guard interval + switch (fe_params->u.ofdm.guard_interval) { + case GUARD_INTERVAL_1_32: + tda1004x_write_mask(state, TDA1004X_AUTO, 2, 0); + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x0c, 0 << 2); + break; + + case GUARD_INTERVAL_1_16: + tda1004x_write_mask(state, TDA1004X_AUTO, 2, 0); + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x0c, 1 << 2); + break; + + case GUARD_INTERVAL_1_8: + tda1004x_write_mask(state, TDA1004X_AUTO, 2, 0); + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x0c, 2 << 2); + break; + + case GUARD_INTERVAL_1_4: + tda1004x_write_mask(state, TDA1004X_AUTO, 2, 0); + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x0c, 3 << 2); + break; + + case GUARD_INTERVAL_AUTO: + tda1004x_write_mask(state, TDA1004X_AUTO, 2, 2); + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x0c, 0 << 2); + break; + + default: + return -EINVAL; + } + + // set transmission mode + switch (fe_params->u.ofdm.transmission_mode) { + case TRANSMISSION_MODE_2K: + tda1004x_write_mask(state, TDA1004X_AUTO, 4, 0); + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x10, 0 << 4); + break; + + case TRANSMISSION_MODE_8K: + tda1004x_write_mask(state, TDA1004X_AUTO, 4, 0); + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x10, 1 << 4); + break; + + case TRANSMISSION_MODE_AUTO: + tda1004x_write_mask(state, TDA1004X_AUTO, 4, 4); + tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x10, 0); + break; + + default: + return -EINVAL; + } + + // start the lock + switch(state->demod_type) { + case TDA1004X_DEMOD_TDA10045: + tda1004x_write_mask(state, TDA1004X_CONFC4, 8, 8); + tda1004x_write_mask(state, TDA1004X_CONFC4, 8, 0); + msleep(10); + break; + + case TDA1004X_DEMOD_TDA10046: + tda1004x_write_mask(state, TDA1004X_AUTO, 0x40, 0x40); + msleep(10); + break; + } + + return 0; +} + +static int tda1004x_get_fe(struct dvb_frontend* fe, struct dvb_frontend_parameters *fe_params) +{ + struct tda1004x_state* state = fe->demodulator_priv; + dprintk("%s\n", __FUNCTION__); + + // inversion status + fe_params->inversion = INVERSION_OFF; + if (tda1004x_read_byte(state, TDA1004X_CONFC1) & 0x20) { + fe_params->inversion = INVERSION_ON; + } + if (state->config->invert) fe_params->inversion = fe_params->inversion ? INVERSION_OFF : INVERSION_ON; + + // bandwidth + switch(state->demod_type) { + case TDA1004X_DEMOD_TDA10045: + switch (tda1004x_read_byte(state, TDA10045H_WREF_LSB)) { + case 0x14: + fe_params->u.ofdm.bandwidth = BANDWIDTH_8_MHZ; + break; + case 0xdb: + fe_params->u.ofdm.bandwidth = BANDWIDTH_7_MHZ; + break; + case 0x4f: + fe_params->u.ofdm.bandwidth = BANDWIDTH_6_MHZ; + break; + } + break; + + case TDA1004X_DEMOD_TDA10046: + switch (tda1004x_read_byte(state, TDA10046H_TIME_WREF1)) { + case 0x60: + fe_params->u.ofdm.bandwidth = BANDWIDTH_8_MHZ; + break; + case 0x6e: + fe_params->u.ofdm.bandwidth = BANDWIDTH_7_MHZ; + break; + case 0x80: + fe_params->u.ofdm.bandwidth = BANDWIDTH_6_MHZ; + break; + } + break; + } + + // FEC + fe_params->u.ofdm.code_rate_HP = + tda1004x_decode_fec(tda1004x_read_byte(state, TDA1004X_OUT_CONF2) & 7); + fe_params->u.ofdm.code_rate_LP = + tda1004x_decode_fec((tda1004x_read_byte(state, TDA1004X_OUT_CONF2) >> 3) & 7); + + // constellation + switch (tda1004x_read_byte(state, TDA1004X_OUT_CONF1) & 3) { + case 0: + fe_params->u.ofdm.constellation = QPSK; + break; + case 1: + fe_params->u.ofdm.constellation = QAM_16; + break; + case 2: + fe_params->u.ofdm.constellation = QAM_64; + break; + } + + // transmission mode + fe_params->u.ofdm.transmission_mode = TRANSMISSION_MODE_2K; + if (tda1004x_read_byte(state, TDA1004X_OUT_CONF1) & 0x10) { + fe_params->u.ofdm.transmission_mode = TRANSMISSION_MODE_8K; + } + + // guard interval + switch ((tda1004x_read_byte(state, TDA1004X_OUT_CONF1) & 0x0c) >> 2) { + case 0: + fe_params->u.ofdm.guard_interval = GUARD_INTERVAL_1_32; + break; + case 1: + fe_params->u.ofdm.guard_interval = GUARD_INTERVAL_1_16; + break; + case 2: + fe_params->u.ofdm.guard_interval = GUARD_INTERVAL_1_8; + break; + case 3: + fe_params->u.ofdm.guard_interval = GUARD_INTERVAL_1_4; + break; + } + + // hierarchy + switch ((tda1004x_read_byte(state, TDA1004X_OUT_CONF1) & 0x60) >> 5) { + case 0: + fe_params->u.ofdm.hierarchy_information = HIERARCHY_NONE; + break; + case 1: + fe_params->u.ofdm.hierarchy_information = HIERARCHY_1; + break; + case 2: + fe_params->u.ofdm.hierarchy_information = HIERARCHY_2; + break; + case 3: + fe_params->u.ofdm.hierarchy_information = HIERARCHY_4; + break; + } + + return 0; +} + +static int tda1004x_read_status(struct dvb_frontend* fe, fe_status_t * fe_status) +{ + struct tda1004x_state* state = fe->demodulator_priv; + int status; + int cber; + int vber; + + dprintk("%s\n", __FUNCTION__); + + // read status + status = tda1004x_read_byte(state, TDA1004X_STATUS_CD); + if (status == -1) { + return -EIO; + } + + // decode + *fe_status = 0; + if (status & 4) *fe_status |= FE_HAS_SIGNAL; + if (status & 2) *fe_status |= FE_HAS_CARRIER; + if (status & 8) *fe_status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; + + // if we don't already have VITERBI (i.e. not LOCKED), see if the viterbi + // is getting anything valid + if (!(*fe_status & FE_HAS_VITERBI)) { + // read the CBER + cber = tda1004x_read_byte(state, TDA1004X_CBER_LSB); + if (cber == -1) return -EIO; + status = tda1004x_read_byte(state, TDA1004X_CBER_MSB); + if (status == -1) return -EIO; + cber |= (status << 8); + tda1004x_read_byte(state, TDA1004X_CBER_RESET); + + if (cber != 65535) { + *fe_status |= FE_HAS_VITERBI; + } + } + + // if we DO have some valid VITERBI output, but don't already have SYNC + // bytes (i.e. not LOCKED), see if the RS decoder is getting anything valid. + if ((*fe_status & FE_HAS_VITERBI) && (!(*fe_status & FE_HAS_SYNC))) { + // read the VBER + vber = tda1004x_read_byte(state, TDA1004X_VBER_LSB); + if (vber == -1) return -EIO; + status = tda1004x_read_byte(state, TDA1004X_VBER_MID); + if (status == -1) return -EIO; + vber |= (status << 8); + status = tda1004x_read_byte(state, TDA1004X_VBER_MSB); + if (status == -1) return -EIO; + vber |= ((status << 16) & 0x0f); + tda1004x_read_byte(state, TDA1004X_CVBER_LUT); + + // if RS has passed some valid TS packets, then we must be + // getting some SYNC bytes + if (vber < 16632) { + *fe_status |= FE_HAS_SYNC; + } + } + + // success + dprintk("%s: fe_status=0x%x\n", __FUNCTION__, *fe_status); + return 0; +} + +static int tda1004x_read_signal_strength(struct dvb_frontend* fe, u16 * signal) +{ + struct tda1004x_state* state = fe->demodulator_priv; + int tmp; + int reg = 0; + + dprintk("%s\n", __FUNCTION__); + + // determine the register to use + switch(state->demod_type) { + case TDA1004X_DEMOD_TDA10045: + reg = TDA10045H_S_AGC; + break; + + case TDA1004X_DEMOD_TDA10046: + reg = TDA10046H_AGC_IF_LEVEL; + break; + } + + // read it + tmp = tda1004x_read_byte(state, reg); + if (tmp < 0) + return -EIO; + + *signal = (tmp << 8) | tmp; + dprintk("%s: signal=0x%x\n", __FUNCTION__, *signal); + return 0; +} + +static int tda1004x_read_snr(struct dvb_frontend* fe, u16 * snr) +{ + struct tda1004x_state* state = fe->demodulator_priv; + int tmp; + + dprintk("%s\n", __FUNCTION__); + + // read it + tmp = tda1004x_read_byte(state, TDA1004X_SNR); + if (tmp < 0) + return -EIO; + if (tmp) { + tmp = 255 - tmp; + } + + *snr = ((tmp << 8) | tmp); + dprintk("%s: snr=0x%x\n", __FUNCTION__, *snr); + return 0; +} + +static int tda1004x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) +{ + struct tda1004x_state* state = fe->demodulator_priv; + int tmp; + int tmp2; + int counter; + + dprintk("%s\n", __FUNCTION__); + + // read the UCBLOCKS and reset + counter = 0; + tmp = tda1004x_read_byte(state, TDA1004X_UNCOR); + if (tmp < 0) + return -EIO; + tmp &= 0x7f; + while (counter++ < 5) { + tda1004x_write_mask(state, TDA1004X_UNCOR, 0x80, 0); + tda1004x_write_mask(state, TDA1004X_UNCOR, 0x80, 0); + tda1004x_write_mask(state, TDA1004X_UNCOR, 0x80, 0); + + tmp2 = tda1004x_read_byte(state, TDA1004X_UNCOR); + if (tmp2 < 0) + return -EIO; + tmp2 &= 0x7f; + if ((tmp2 < tmp) || (tmp2 == 0)) + break; + } + + if (tmp != 0x7f) { + *ucblocks = tmp; + } else { + *ucblocks = 0xffffffff; + } + dprintk("%s: ucblocks=0x%x\n", __FUNCTION__, *ucblocks); + return 0; +} + +static int tda1004x_read_ber(struct dvb_frontend* fe, u32* ber) +{ + struct tda1004x_state* state = fe->demodulator_priv; + int tmp; + + dprintk("%s\n", __FUNCTION__); + + // read it in + tmp = tda1004x_read_byte(state, TDA1004X_CBER_LSB); + if (tmp < 0) return -EIO; + *ber = tmp << 1; + tmp = tda1004x_read_byte(state, TDA1004X_CBER_MSB); + if (tmp < 0) return -EIO; + *ber |= (tmp << 9); + tda1004x_read_byte(state, TDA1004X_CBER_RESET); + + dprintk("%s: ber=0x%x\n", __FUNCTION__, *ber); + return 0; +} + +static int tda1004x_sleep(struct dvb_frontend* fe) +{ + struct tda1004x_state* state = fe->demodulator_priv; + + switch(state->demod_type) { + case TDA1004X_DEMOD_TDA10045: + tda1004x_write_mask(state, TDA1004X_CONFADC1, 0x10, 0x10); + break; + + case TDA1004X_DEMOD_TDA10046: + tda1004x_write_mask(state, TDA1004X_CONFC4, 1, 1); + break; + } + state->initialised = 0; + + return 0; +} + +static int tda1004x_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings) +{ + fesettings->min_delay_ms = 800; + fesettings->step_size = 166667; + fesettings->max_drift = 166667*2; + return 0; +} + +static void tda1004x_release(struct dvb_frontend* fe) +{ + struct tda1004x_state* state = (struct tda1004x_state*) fe->demodulator_priv; + kfree(state); +} + +static struct dvb_frontend_ops tda10045_ops; + +struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config, + struct i2c_adapter* i2c) +{ + struct tda1004x_state* state = NULL; + + /* allocate memory for the internal state */ + state = (struct tda1004x_state*) kmalloc(sizeof(struct tda1004x_state), GFP_KERNEL); + if (state == NULL) goto error; + + /* setup the state */ + state->config = config; + state->i2c = i2c; + memcpy(&state->ops, &tda10045_ops, sizeof(struct dvb_frontend_ops)); + state->initialised = 0; + state->demod_type = TDA1004X_DEMOD_TDA10045; + + /* check if the demod is there */ + if (tda1004x_read_byte(state, TDA1004X_CHIPID) != 0x25) goto error; + + /* 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 tda10046_ops; + +struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config, + struct i2c_adapter* i2c) +{ + struct tda1004x_state* state = NULL; + + /* allocate memory for the internal state */ + state = (struct tda1004x_state*) kmalloc(sizeof(struct tda1004x_state), GFP_KERNEL); + if (state == NULL) goto error; + + /* setup the state */ + state->config = config; + state->i2c = i2c; + memcpy(&state->ops, &tda10046_ops, sizeof(struct dvb_frontend_ops)); + state->initialised = 0; + state->demod_type = TDA1004X_DEMOD_TDA10046; + + /* check if the demod is there */ + if (tda1004x_read_byte(state, TDA1004X_CHIPID) != 0x46) goto error; + + /* create dvb_frontend */ + state->frontend.ops = &state->ops; + state->frontend.demodulator_priv = state; + return &state->frontend; + +error: + if (state) kfree(state); + return NULL; +} + +static struct dvb_frontend_ops tda10045_ops = { + + .info = { + .name = "Philips TDA10045H DVB-T", + .type = FE_OFDM, + .frequency_min = 51000000, + .frequency_max = 858000000, + .frequency_stepsize = 166667, + .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_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | + FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO + }, + + .release = tda1004x_release, + + .init = tda10045_init, + .sleep = tda1004x_sleep, + + .set_frontend = tda1004x_set_fe, + .get_frontend = tda1004x_get_fe, + .get_tune_settings = tda1004x_get_tune_settings, + + .read_status = tda1004x_read_status, + .read_ber = tda1004x_read_ber, + .read_signal_strength = tda1004x_read_signal_strength, + .read_snr = tda1004x_read_snr, + .read_ucblocks = tda1004x_read_ucblocks, +}; + +static struct dvb_frontend_ops tda10046_ops = { + + .info = { + .name = "Philips TDA10046H DVB-T", + .type = FE_OFDM, + .frequency_min = 51000000, + .frequency_max = 858000000, + .frequency_stepsize = 166667, + .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_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | + FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO + }, + + .release = tda1004x_release, + + .init = tda10046_init, + .sleep = tda1004x_sleep, + + .set_frontend = tda1004x_set_fe, + .get_frontend = tda1004x_get_fe, + .get_tune_settings = tda1004x_get_tune_settings, + + .read_status = tda1004x_read_status, + .read_ber = tda1004x_read_ber, + .read_signal_strength = tda1004x_read_signal_strength, + .read_snr = tda1004x_read_snr, + .read_ucblocks = tda1004x_read_ucblocks, +}; + +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); + +MODULE_DESCRIPTION("Philips TDA10045H & TDA10046H DVB-T Demodulator"); +MODULE_AUTHOR("Andrew de Quincey & Robert Schlabbach"); +MODULE_LICENSE("GPL"); + +EXPORT_SYMBOL(tda10045_attach); +EXPORT_SYMBOL(tda10046_attach); +EXPORT_SYMBOL(tda1004x_write_byte); |