diff options
Diffstat (limited to 'drivers/media/dvb/frontends/m88rs2000.c')
| -rw-r--r-- | drivers/media/dvb/frontends/m88rs2000.c | 919 |
1 files changed, 0 insertions, 919 deletions
diff --git a/drivers/media/dvb/frontends/m88rs2000.c b/drivers/media/dvb/frontends/m88rs2000.c deleted file mode 100644 index 633815e..0000000 --- a/drivers/media/dvb/frontends/m88rs2000.c +++ /dev/null @@ -1,919 +0,0 @@ -/* - Driver for M88RS2000 demodulator and tuner - - Copyright (C) 2012 Malcolm Priestley (tvboxspy@gmail.com) - Beta Driver - - Include various calculation code from DS3000 driver. - Copyright (C) 2009 Konstantin Dimitrov. - - 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/init.h> -#include <linux/module.h> -#include <linux/device.h> -#include <linux/jiffies.h> -#include <linux/string.h> -#include <linux/slab.h> -#include <linux/types.h> - - -#include "dvb_frontend.h" -#include "m88rs2000.h" - -struct m88rs2000_state { - struct i2c_adapter *i2c; - const struct m88rs2000_config *config; - struct dvb_frontend frontend; - u8 no_lock_count; - u32 tuner_frequency; - u32 symbol_rate; - fe_code_rate_t fec_inner; - u8 tuner_level; - int errmode; -}; - -static int m88rs2000_debug; - -module_param_named(debug, m88rs2000_debug, int, 0644); -MODULE_PARM_DESC(debug, "set debugging level (1=info (or-able))."); - -#define dprintk(level, args...) do { \ - if (level & m88rs2000_debug) \ - printk(KERN_DEBUG "m88rs2000-fe: " args); \ -} while (0) - -#define deb_info(args...) dprintk(0x01, args) -#define info(format, arg...) \ - printk(KERN_INFO "m88rs2000-fe: " format "\n" , ## arg) - -static int m88rs2000_writereg(struct m88rs2000_state *state, u8 tuner, - u8 reg, u8 data) -{ - int ret; - u8 addr = (tuner == 0) ? state->config->tuner_addr : - state->config->demod_addr; - u8 buf[] = { reg, data }; - struct i2c_msg msg = { - .addr = addr, - .flags = 0, - .buf = buf, - .len = 2 - }; - - ret = i2c_transfer(state->i2c, &msg, 1); - - if (ret != 1) - deb_info("%s: writereg error (reg == 0x%02x, val == 0x%02x, " - "ret == %i)\n", __func__, reg, data, ret); - - return (ret != 1) ? -EREMOTEIO : 0; -} - -static int m88rs2000_demod_write(struct m88rs2000_state *state, u8 reg, u8 data) -{ - return m88rs2000_writereg(state, 1, reg, data); -} - -static int m88rs2000_tuner_write(struct m88rs2000_state *state, u8 reg, u8 data) -{ - m88rs2000_demod_write(state, 0x81, 0x84); - udelay(10); - return m88rs2000_writereg(state, 0, reg, data); - -} - -static int m88rs2000_write(struct dvb_frontend *fe, const u8 buf[], int len) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - - if (len != 2) - return -EINVAL; - - return m88rs2000_writereg(state, 1, buf[0], buf[1]); -} - -static u8 m88rs2000_readreg(struct m88rs2000_state *state, u8 tuner, u8 reg) -{ - int ret; - u8 b0[] = { reg }; - u8 b1[] = { 0 }; - u8 addr = (tuner == 0) ? state->config->tuner_addr : - state->config->demod_addr; - struct i2c_msg msg[] = { - { - .addr = addr, - .flags = 0, - .buf = b0, - .len = 1 - }, { - .addr = addr, - .flags = I2C_M_RD, - .buf = b1, - .len = 1 - } - }; - - ret = i2c_transfer(state->i2c, msg, 2); - - if (ret != 2) - deb_info("%s: readreg error (reg == 0x%02x, ret == %i)\n", - __func__, reg, ret); - - return b1[0]; -} - -static u8 m88rs2000_demod_read(struct m88rs2000_state *state, u8 reg) -{ - return m88rs2000_readreg(state, 1, reg); -} - -static u8 m88rs2000_tuner_read(struct m88rs2000_state *state, u8 reg) -{ - m88rs2000_demod_write(state, 0x81, 0x85); - udelay(10); - return m88rs2000_readreg(state, 0, reg); -} - -static int m88rs2000_set_symbolrate(struct dvb_frontend *fe, u32 srate) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - int ret; - u32 temp; - u8 b[3]; - - if ((srate < 1000000) || (srate > 45000000)) - return -EINVAL; - - temp = srate / 1000; - temp *= 11831; - temp /= 68; - temp -= 3; - - b[0] = (u8) (temp >> 16) & 0xff; - b[1] = (u8) (temp >> 8) & 0xff; - b[2] = (u8) temp & 0xff; - ret = m88rs2000_demod_write(state, 0x93, b[2]); - ret |= m88rs2000_demod_write(state, 0x94, b[1]); - ret |= m88rs2000_demod_write(state, 0x95, b[0]); - - deb_info("m88rs2000: m88rs2000_set_symbolrate\n"); - return ret; -} - -static int m88rs2000_send_diseqc_msg(struct dvb_frontend *fe, - struct dvb_diseqc_master_cmd *m) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - - int i; - u8 reg; - deb_info("%s\n", __func__); - m88rs2000_demod_write(state, 0x9a, 0x30); - reg = m88rs2000_demod_read(state, 0xb2); - reg &= 0x3f; - m88rs2000_demod_write(state, 0xb2, reg); - for (i = 0; i < m->msg_len; i++) - m88rs2000_demod_write(state, 0xb3 + i, m->msg[i]); - - reg = m88rs2000_demod_read(state, 0xb1); - reg &= 0x87; - reg |= ((m->msg_len - 1) << 3) | 0x07; - reg &= 0x7f; - m88rs2000_demod_write(state, 0xb1, reg); - - for (i = 0; i < 15; i++) { - if ((m88rs2000_demod_read(state, 0xb1) & 0x40) == 0x0) - break; - msleep(20); - } - - reg = m88rs2000_demod_read(state, 0xb1); - if ((reg & 0x40) > 0x0) { - reg &= 0x7f; - reg |= 0x40; - m88rs2000_demod_write(state, 0xb1, reg); - } - - reg = m88rs2000_demod_read(state, 0xb2); - reg &= 0x3f; - reg |= 0x80; - m88rs2000_demod_write(state, 0xb2, reg); - m88rs2000_demod_write(state, 0x9a, 0xb0); - - - return 0; -} - -static int m88rs2000_send_diseqc_burst(struct dvb_frontend *fe, - fe_sec_mini_cmd_t burst) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - u8 reg0, reg1; - deb_info("%s\n", __func__); - m88rs2000_demod_write(state, 0x9a, 0x30); - msleep(50); - reg0 = m88rs2000_demod_read(state, 0xb1); - reg1 = m88rs2000_demod_read(state, 0xb2); - /* TODO complete this section */ - m88rs2000_demod_write(state, 0xb2, reg1); - m88rs2000_demod_write(state, 0xb1, reg0); - m88rs2000_demod_write(state, 0x9a, 0xb0); - - return 0; -} - -static int m88rs2000_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - u8 reg0, reg1; - m88rs2000_demod_write(state, 0x9a, 0x30); - reg0 = m88rs2000_demod_read(state, 0xb1); - reg1 = m88rs2000_demod_read(state, 0xb2); - - reg1 &= 0x3f; - - switch (tone) { - case SEC_TONE_ON: - reg0 |= 0x4; - reg0 &= 0xbc; - break; - case SEC_TONE_OFF: - reg1 |= 0x80; - break; - default: - break; - } - m88rs2000_demod_write(state, 0xb2, reg1); - m88rs2000_demod_write(state, 0xb1, reg0); - m88rs2000_demod_write(state, 0x9a, 0xb0); - return 0; -} - -struct inittab { - u8 cmd; - u8 reg; - u8 val; -}; - -struct inittab m88rs2000_setup[] = { - {DEMOD_WRITE, 0x9a, 0x30}, - {DEMOD_WRITE, 0x00, 0x01}, - {WRITE_DELAY, 0x19, 0x00}, - {DEMOD_WRITE, 0x00, 0x00}, - {DEMOD_WRITE, 0x9a, 0xb0}, - {DEMOD_WRITE, 0x81, 0xc1}, - {TUNER_WRITE, 0x42, 0x73}, - {TUNER_WRITE, 0x05, 0x07}, - {TUNER_WRITE, 0x20, 0x27}, - {TUNER_WRITE, 0x07, 0x02}, - {TUNER_WRITE, 0x11, 0xff}, - {TUNER_WRITE, 0x60, 0xf9}, - {TUNER_WRITE, 0x08, 0x01}, - {TUNER_WRITE, 0x00, 0x41}, - {DEMOD_WRITE, 0x81, 0x81}, - {DEMOD_WRITE, 0x86, 0xc6}, - {DEMOD_WRITE, 0x9a, 0x30}, - {DEMOD_WRITE, 0xf0, 0x22}, - {DEMOD_WRITE, 0xf1, 0xbf}, - {DEMOD_WRITE, 0xb0, 0x45}, - {DEMOD_WRITE, 0xb2, 0x01}, /* set voltage pin always set 1*/ - {DEMOD_WRITE, 0x9a, 0xb0}, - {0xff, 0xaa, 0xff} -}; - -struct inittab m88rs2000_shutdown[] = { - {DEMOD_WRITE, 0x9a, 0x30}, - {DEMOD_WRITE, 0xb0, 0x00}, - {DEMOD_WRITE, 0xf1, 0x89}, - {DEMOD_WRITE, 0x00, 0x01}, - {DEMOD_WRITE, 0x9a, 0xb0}, - {TUNER_WRITE, 0x00, 0x40}, - {DEMOD_WRITE, 0x81, 0x81}, - {0xff, 0xaa, 0xff} -}; - -struct inittab tuner_reset[] = { - {TUNER_WRITE, 0x42, 0x73}, - {TUNER_WRITE, 0x05, 0x07}, - {TUNER_WRITE, 0x20, 0x27}, - {TUNER_WRITE, 0x07, 0x02}, - {TUNER_WRITE, 0x11, 0xff}, - {TUNER_WRITE, 0x60, 0xf9}, - {TUNER_WRITE, 0x08, 0x01}, - {TUNER_WRITE, 0x00, 0x41}, - {0xff, 0xaa, 0xff} -}; - -struct inittab fe_reset[] = { - {DEMOD_WRITE, 0x00, 0x01}, - {DEMOD_WRITE, 0xf1, 0xbf}, - {DEMOD_WRITE, 0x00, 0x01}, - {DEMOD_WRITE, 0x20, 0x81}, - {DEMOD_WRITE, 0x21, 0x80}, - {DEMOD_WRITE, 0x10, 0x33}, - {DEMOD_WRITE, 0x11, 0x44}, - {DEMOD_WRITE, 0x12, 0x07}, - {DEMOD_WRITE, 0x18, 0x20}, - {DEMOD_WRITE, 0x28, 0x04}, - {DEMOD_WRITE, 0x29, 0x8e}, - {DEMOD_WRITE, 0x3b, 0xff}, - {DEMOD_WRITE, 0x32, 0x10}, - {DEMOD_WRITE, 0x33, 0x02}, - {DEMOD_WRITE, 0x34, 0x30}, - {DEMOD_WRITE, 0x35, 0xff}, - {DEMOD_WRITE, 0x38, 0x50}, - {DEMOD_WRITE, 0x39, 0x68}, - {DEMOD_WRITE, 0x3c, 0x7f}, - {DEMOD_WRITE, 0x3d, 0x0f}, - {DEMOD_WRITE, 0x45, 0x20}, - {DEMOD_WRITE, 0x46, 0x24}, - {DEMOD_WRITE, 0x47, 0x7c}, - {DEMOD_WRITE, 0x48, 0x16}, - {DEMOD_WRITE, 0x49, 0x04}, - {DEMOD_WRITE, 0x4a, 0x01}, - {DEMOD_WRITE, 0x4b, 0x78}, - {DEMOD_WRITE, 0X4d, 0xd2}, - {DEMOD_WRITE, 0x4e, 0x6d}, - {DEMOD_WRITE, 0x50, 0x30}, - {DEMOD_WRITE, 0x51, 0x30}, - {DEMOD_WRITE, 0x54, 0x7b}, - {DEMOD_WRITE, 0x56, 0x09}, - {DEMOD_WRITE, 0x58, 0x59}, - {DEMOD_WRITE, 0x59, 0x37}, - {DEMOD_WRITE, 0x63, 0xfa}, - {0xff, 0xaa, 0xff} -}; - -struct inittab fe_trigger[] = { - {DEMOD_WRITE, 0x97, 0x04}, - {DEMOD_WRITE, 0x99, 0x77}, - {DEMOD_WRITE, 0x9b, 0x64}, - {DEMOD_WRITE, 0x9e, 0x00}, - {DEMOD_WRITE, 0x9f, 0xf8}, - {DEMOD_WRITE, 0xa0, 0x20}, - {DEMOD_WRITE, 0xa1, 0xe0}, - {DEMOD_WRITE, 0xa3, 0x38}, - {DEMOD_WRITE, 0x98, 0xff}, - {DEMOD_WRITE, 0xc0, 0x0f}, - {DEMOD_WRITE, 0x89, 0x01}, - {DEMOD_WRITE, 0x00, 0x00}, - {WRITE_DELAY, 0x0a, 0x00}, - {DEMOD_WRITE, 0x00, 0x01}, - {DEMOD_WRITE, 0x00, 0x00}, - {DEMOD_WRITE, 0x9a, 0xb0}, - {0xff, 0xaa, 0xff} -}; - -static int m88rs2000_tab_set(struct m88rs2000_state *state, - struct inittab *tab) -{ - int ret = 0; - u8 i; - if (tab == NULL) - return -EINVAL; - - for (i = 0; i < 255; i++) { - switch (tab[i].cmd) { - case 0x01: - ret = m88rs2000_demod_write(state, tab[i].reg, - tab[i].val); - break; - case 0x02: - ret = m88rs2000_tuner_write(state, tab[i].reg, - tab[i].val); - break; - case 0x10: - if (tab[i].reg > 0) - mdelay(tab[i].reg); - break; - case 0xff: - if (tab[i].reg == 0xaa && tab[i].val == 0xff) - return 0; - case 0x00: - break; - default: - return -EINVAL; - } - if (ret < 0) - return -ENODEV; - } - return 0; -} - -static int m88rs2000_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t volt) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - u8 data; - - data = m88rs2000_demod_read(state, 0xb2); - data |= 0x03; /* bit0 V/H, bit1 off/on */ - - switch (volt) { - case SEC_VOLTAGE_18: - data &= ~0x03; - break; - case SEC_VOLTAGE_13: - data &= ~0x03; - data |= 0x01; - break; - case SEC_VOLTAGE_OFF: - break; - } - - m88rs2000_demod_write(state, 0xb2, data); - - return 0; -} - -static int m88rs2000_startup(struct m88rs2000_state *state) -{ - int ret = 0; - u8 reg; - - reg = m88rs2000_tuner_read(state, 0x00); - if ((reg & 0x40) == 0) - ret = -ENODEV; - - return ret; -} - -static int m88rs2000_init(struct dvb_frontend *fe) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - int ret; - - deb_info("m88rs2000: init chip\n"); - /* Setup frontend from shutdown/cold */ - ret = m88rs2000_tab_set(state, m88rs2000_setup); - - return ret; -} - -static int m88rs2000_sleep(struct dvb_frontend *fe) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - int ret; - /* Shutdown the frondend */ - ret = m88rs2000_tab_set(state, m88rs2000_shutdown); - return ret; -} - -static int m88rs2000_read_status(struct dvb_frontend *fe, fe_status_t *status) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - u8 reg = m88rs2000_demod_read(state, 0x8c); - - *status = 0; - - if ((reg & 0x7) == 0x7) { - *status = FE_HAS_CARRIER | FE_HAS_SIGNAL | FE_HAS_VITERBI - | FE_HAS_SYNC | FE_HAS_LOCK; - if (state->config->set_ts_params) - state->config->set_ts_params(fe, CALL_IS_READ); - } - return 0; -} - -/* Extact code for these unknown but lmedm04 driver uses interupt callbacks */ - -static int m88rs2000_read_ber(struct dvb_frontend *fe, u32 *ber) -{ - deb_info("m88rs2000_read_ber %d\n", *ber); - *ber = 0; - return 0; -} - -static int m88rs2000_read_signal_strength(struct dvb_frontend *fe, - u16 *strength) -{ - *strength = 0; - return 0; -} - -static int m88rs2000_read_snr(struct dvb_frontend *fe, u16 *snr) -{ - deb_info("m88rs2000_read_snr %d\n", *snr); - *snr = 0; - return 0; -} - -static int m88rs2000_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) -{ - deb_info("m88rs2000_read_ber %d\n", *ucblocks); - *ucblocks = 0; - return 0; -} - -static int m88rs2000_tuner_gate_ctrl(struct m88rs2000_state *state, u8 offset) -{ - int ret; - ret = m88rs2000_tuner_write(state, 0x51, 0x1f - offset); - ret |= m88rs2000_tuner_write(state, 0x51, 0x1f); - ret |= m88rs2000_tuner_write(state, 0x50, offset); - ret |= m88rs2000_tuner_write(state, 0x50, 0x00); - msleep(20); - return ret; -} - -static int m88rs2000_set_tuner_rf(struct dvb_frontend *fe) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - int reg; - reg = m88rs2000_tuner_read(state, 0x3d); - reg &= 0x7f; - if (reg < 0x16) - reg = 0xa1; - else if (reg == 0x16) - reg = 0x99; - else - reg = 0xf9; - - m88rs2000_tuner_write(state, 0x60, reg); - reg = m88rs2000_tuner_gate_ctrl(state, 0x08); - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - return reg; -} - -static int m88rs2000_set_tuner(struct dvb_frontend *fe, u16 *offset) -{ - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - struct m88rs2000_state *state = fe->demodulator_priv; - int ret; - u32 frequency = c->frequency; - s32 offset_khz; - s32 tmp; - u32 symbol_rate = (c->symbol_rate / 1000); - u32 f3db, gdiv28; - u16 value, ndiv, lpf_coeff; - u8 lpf_mxdiv, mlpf_max, mlpf_min, nlpf; - u8 lo = 0x01, div4 = 0x0; - - /* Reset Tuner */ - ret = m88rs2000_tab_set(state, tuner_reset); - - /* Calculate frequency divider */ - if (frequency < 1060000) { - lo |= 0x10; - div4 = 0x1; - ndiv = (frequency * 14 * 4) / FE_CRYSTAL_KHZ; - } else - ndiv = (frequency * 14 * 2) / FE_CRYSTAL_KHZ; - ndiv = ndiv + ndiv % 2; - ndiv = ndiv - 1024; - - ret = m88rs2000_tuner_write(state, 0x10, 0x80 | lo); - - /* Set frequency divider */ - ret |= m88rs2000_tuner_write(state, 0x01, (ndiv >> 8) & 0xf); - ret |= m88rs2000_tuner_write(state, 0x02, ndiv & 0xff); - - ret |= m88rs2000_tuner_write(state, 0x03, 0x06); - ret |= m88rs2000_tuner_gate_ctrl(state, 0x10); - if (ret < 0) - return -ENODEV; - - /* Tuner Frequency Range */ - ret = m88rs2000_tuner_write(state, 0x10, lo); - - ret |= m88rs2000_tuner_gate_ctrl(state, 0x08); - - /* Tuner RF */ - ret |= m88rs2000_set_tuner_rf(fe); - - gdiv28 = (FE_CRYSTAL_KHZ / 1000 * 1694 + 500) / 1000; - ret |= m88rs2000_tuner_write(state, 0x04, gdiv28 & 0xff); - ret |= m88rs2000_tuner_gate_ctrl(state, 0x04); - if (ret < 0) - return -ENODEV; - - value = m88rs2000_tuner_read(state, 0x26); - - f3db = (symbol_rate * 135) / 200 + 2000; - f3db += FREQ_OFFSET_LOW_SYM_RATE; - if (f3db < 7000) - f3db = 7000; - if (f3db > 40000) - f3db = 40000; - - gdiv28 = gdiv28 * 207 / (value * 2 + 151); - mlpf_max = gdiv28 * 135 / 100; - mlpf_min = gdiv28 * 78 / 100; - if (mlpf_max > 63) - mlpf_max = 63; - - lpf_coeff = 2766; - - nlpf = (f3db * gdiv28 * 2 / lpf_coeff / - (FE_CRYSTAL_KHZ / 1000) + 1) / 2; - if (nlpf > 23) - nlpf = 23; - if (nlpf < 1) - nlpf = 1; - - lpf_mxdiv = (nlpf * (FE_CRYSTAL_KHZ / 1000) - * lpf_coeff * 2 / f3db + 1) / 2; - - if (lpf_mxdiv < mlpf_min) { - nlpf++; - lpf_mxdiv = (nlpf * (FE_CRYSTAL_KHZ / 1000) - * lpf_coeff * 2 / f3db + 1) / 2; - } - - if (lpf_mxdiv > mlpf_max) - lpf_mxdiv = mlpf_max; - - ret = m88rs2000_tuner_write(state, 0x04, lpf_mxdiv); - ret |= m88rs2000_tuner_write(state, 0x06, nlpf); - - ret |= m88rs2000_tuner_gate_ctrl(state, 0x04); - - ret |= m88rs2000_tuner_gate_ctrl(state, 0x01); - - msleep(80); - /* calculate offset assuming 96000kHz*/ - offset_khz = (ndiv - ndiv % 2 + 1024) * FE_CRYSTAL_KHZ - / 14 / (div4 + 1) / 2; - - offset_khz -= frequency; - - tmp = offset_khz; - tmp *= 65536; - - tmp = (2 * tmp + 96000) / (2 * 96000); - if (tmp < 0) - tmp += 65536; - - *offset = tmp & 0xffff; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - - return (ret < 0) ? -EINVAL : 0; -} - -static int m88rs2000_set_fec(struct m88rs2000_state *state, - fe_code_rate_t fec) -{ - u16 fec_set; - switch (fec) { - /* This is not confirmed kept for reference */ -/* case FEC_1_2: - fec_set = 0x88; - break; - case FEC_2_3: - fec_set = 0x68; - break; - case FEC_3_4: - fec_set = 0x48; - break; - case FEC_5_6: - fec_set = 0x28; - break; - case FEC_7_8: - fec_set = 0x18; - break; */ - case FEC_AUTO: - default: - fec_set = 0x08; - } - m88rs2000_demod_write(state, 0x76, fec_set); - - return 0; -} - - -static fe_code_rate_t m88rs2000_get_fec(struct m88rs2000_state *state) -{ - u8 reg; - m88rs2000_demod_write(state, 0x9a, 0x30); - reg = m88rs2000_demod_read(state, 0x76); - m88rs2000_demod_write(state, 0x9a, 0xb0); - - switch (reg) { - case 0x88: - return FEC_1_2; - case 0x68: - return FEC_2_3; - case 0x48: - return FEC_3_4; - case 0x28: - return FEC_5_6; - case 0x18: - return FEC_7_8; - case 0x08: - default: - break; - } - - return FEC_AUTO; -} - -static int m88rs2000_set_frontend(struct dvb_frontend *fe) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - fe_status_t status; - int i, ret; - u16 offset = 0; - u8 reg; - - state->no_lock_count = 0; - - if (c->delivery_system != SYS_DVBS) { - deb_info("%s: unsupported delivery " - "system selected (%d)\n", - __func__, c->delivery_system); - return -EOPNOTSUPP; - } - - /* Set Tuner */ - ret = m88rs2000_set_tuner(fe, &offset); - if (ret < 0) - return -ENODEV; - - ret = m88rs2000_demod_write(state, 0x9a, 0x30); - /* Unknown usually 0xc6 sometimes 0xc1 */ - reg = m88rs2000_demod_read(state, 0x86); - ret |= m88rs2000_demod_write(state, 0x86, reg); - /* Offset lower nibble always 0 */ - ret |= m88rs2000_demod_write(state, 0x9c, (offset >> 8)); - ret |= m88rs2000_demod_write(state, 0x9d, offset & 0xf0); - - - /* Reset Demod */ - ret = m88rs2000_tab_set(state, fe_reset); - if (ret < 0) - return -ENODEV; - - /* Unknown */ - reg = m88rs2000_demod_read(state, 0x70); - ret = m88rs2000_demod_write(state, 0x70, reg); - - /* Set FEC */ - ret |= m88rs2000_set_fec(state, c->fec_inner); - ret |= m88rs2000_demod_write(state, 0x85, 0x1); - ret |= m88rs2000_demod_write(state, 0x8a, 0xbf); - ret |= m88rs2000_demod_write(state, 0x8d, 0x1e); - ret |= m88rs2000_demod_write(state, 0x90, 0xf1); - ret |= m88rs2000_demod_write(state, 0x91, 0x08); - - if (ret < 0) - return -ENODEV; - - /* Set Symbol Rate */ - ret = m88rs2000_set_symbolrate(fe, c->symbol_rate); - if (ret < 0) - return -ENODEV; - - /* Set up Demod */ - ret = m88rs2000_tab_set(state, fe_trigger); - if (ret < 0) - return -ENODEV; - - for (i = 0; i < 25; i++) { - reg = m88rs2000_demod_read(state, 0x8c); - if ((reg & 0x7) == 0x7) { - status = FE_HAS_LOCK; - break; - } - state->no_lock_count++; - if (state->no_lock_count == 15) { - reg = m88rs2000_demod_read(state, 0x70); - reg ^= 0x4; - m88rs2000_demod_write(state, 0x70, reg); - state->no_lock_count = 0; - } - if (state->no_lock_count == 20) - m88rs2000_set_tuner_rf(fe); - msleep(20); - } - - if (status & FE_HAS_LOCK) { - state->fec_inner = m88rs2000_get_fec(state); - /* Uknown suspect SNR level */ - reg = m88rs2000_demod_read(state, 0x65); - } - - state->tuner_frequency = c->frequency; - state->symbol_rate = c->symbol_rate; - return 0; -} - -static int m88rs2000_get_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - struct m88rs2000_state *state = fe->demodulator_priv; - c->fec_inner = state->fec_inner; - c->frequency = state->tuner_frequency; - c->symbol_rate = state->symbol_rate; - return 0; -} - -static int m88rs2000_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - - if (enable) - m88rs2000_demod_write(state, 0x81, 0x84); - else - m88rs2000_demod_write(state, 0x81, 0x81); - udelay(10); - return 0; -} - -static void m88rs2000_release(struct dvb_frontend *fe) -{ - struct m88rs2000_state *state = fe->demodulator_priv; - kfree(state); -} - -static struct dvb_frontend_ops m88rs2000_ops = { - .delsys = { SYS_DVBS }, - .info = { - .name = "M88RS2000 DVB-S", - .frequency_min = 950000, - .frequency_max = 2150000, - .frequency_stepsize = 1000, /* kHz for QPSK frontends */ - .frequency_tolerance = 5000, - .symbol_rate_min = 1000000, - .symbol_rate_max = 45000000, - .symbol_rate_tolerance = 500, /* ppm */ - .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_QPSK | - FE_CAN_FEC_AUTO - }, - - .release = m88rs2000_release, - .init = m88rs2000_init, - .sleep = m88rs2000_sleep, - .write = m88rs2000_write, - .i2c_gate_ctrl = m88rs2000_i2c_gate_ctrl, - .read_status = m88rs2000_read_status, - .read_ber = m88rs2000_read_ber, - .read_signal_strength = m88rs2000_read_signal_strength, - .read_snr = m88rs2000_read_snr, - .read_ucblocks = m88rs2000_read_ucblocks, - .diseqc_send_master_cmd = m88rs2000_send_diseqc_msg, - .diseqc_send_burst = m88rs2000_send_diseqc_burst, - .set_tone = m88rs2000_set_tone, - .set_voltage = m88rs2000_set_voltage, - - .set_frontend = m88rs2000_set_frontend, - .get_frontend = m88rs2000_get_frontend, -}; - -struct dvb_frontend *m88rs2000_attach(const struct m88rs2000_config *config, - struct i2c_adapter *i2c) -{ - struct m88rs2000_state *state = NULL; - - /* allocate memory for the internal state */ - state = kzalloc(sizeof(struct m88rs2000_state), GFP_KERNEL); - if (state == NULL) - goto error; - - /* setup the state */ - state->config = config; - state->i2c = i2c; - state->tuner_frequency = 0; - state->symbol_rate = 0; - state->fec_inner = 0; - - if (m88rs2000_startup(state) < 0) - goto error; - - /* create dvb_frontend */ - memcpy(&state->frontend.ops, &m88rs2000_ops, - sizeof(struct dvb_frontend_ops)); - state->frontend.demodulator_priv = state; - return &state->frontend; - -error: - kfree(state); - - return NULL; -} -EXPORT_SYMBOL(m88rs2000_attach); - -MODULE_DESCRIPTION("M88RS2000 DVB-S Demodulator driver"); -MODULE_AUTHOR("Malcolm Priestley tvboxspy@gmail.com"); -MODULE_LICENSE("GPL"); -MODULE_VERSION("1.13"); - |
