diff options
Diffstat (limited to 'drivers/media/usb/dvb-usb/friio-fe.c')
| -rw-r--r-- | drivers/media/usb/dvb-usb/friio-fe.c | 440 |
1 files changed, 0 insertions, 440 deletions
diff --git a/drivers/media/usb/dvb-usb/friio-fe.c b/drivers/media/usb/dvb-usb/friio-fe.c deleted file mode 100644 index e6bd0ed8d789..000000000000 --- a/drivers/media/usb/dvb-usb/friio-fe.c +++ /dev/null @@ -1,440 +0,0 @@ -/* DVB USB compliant Linux driver for the Friio USB2.0 ISDB-T receiver. - * - * Copyright (C) 2009 Akihiro Tsukada <tskd2@yahoo.co.jp> - * - * This module is based off the the gl861 and vp702x modules. - * - * 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, version 2. - * - * see Documentation/media/dvb-drivers/dvb-usb.rst for more information - */ -#include <linux/init.h> -#include <linux/string.h> -#include <linux/slab.h> -#include <linux/kernel.h> - -#include "friio.h" - -struct jdvbt90502_state { - struct i2c_adapter *i2c; - struct dvb_frontend frontend; - struct jdvbt90502_config config; -}; - -/* NOTE: TC90502 has 16bit register-address? */ -/* register 0x0100 is used for reading PLL status, so reg is u16 here */ -static int jdvbt90502_reg_read(struct jdvbt90502_state *state, - const u16 reg, u8 *buf, const size_t count) -{ - int ret; - u8 wbuf[3]; - struct i2c_msg msg[2]; - - wbuf[0] = reg & 0xFF; - wbuf[1] = 0; - wbuf[2] = reg >> 8; - - msg[0].addr = state->config.demod_address; - msg[0].flags = 0; - msg[0].buf = wbuf; - msg[0].len = sizeof(wbuf); - - msg[1].addr = msg[0].addr; - msg[1].flags = I2C_M_RD; - msg[1].buf = buf; - msg[1].len = count; - - ret = i2c_transfer(state->i2c, msg, 2); - if (ret != 2) { - deb_fe(" reg read failed.\n"); - return -EREMOTEIO; - } - return 0; -} - -/* currently 16bit register-address is not used, so reg is u8 here */ -static int jdvbt90502_single_reg_write(struct jdvbt90502_state *state, - const u8 reg, const u8 val) -{ - struct i2c_msg msg; - u8 wbuf[2]; - - wbuf[0] = reg; - wbuf[1] = val; - - msg.addr = state->config.demod_address; - msg.flags = 0; - msg.buf = wbuf; - msg.len = sizeof(wbuf); - - if (i2c_transfer(state->i2c, &msg, 1) != 1) { - deb_fe(" reg write failed."); - return -EREMOTEIO; - } - return 0; -} - -static int _jdvbt90502_write(struct dvb_frontend *fe, const u8 buf[], int len) -{ - struct jdvbt90502_state *state = fe->demodulator_priv; - int err, i; - for (i = 0; i < len - 1; i++) { - err = jdvbt90502_single_reg_write(state, - buf[0] + i, buf[i + 1]); - if (err) - return err; - } - - return 0; -} - -/* read pll status byte via the demodulator's I2C register */ -/* note: Win box reads it by 8B block at the I2C addr 0x30 from reg:0x80 */ -static int jdvbt90502_pll_read(struct jdvbt90502_state *state, u8 *result) -{ - int ret; - - /* +1 for reading */ - u8 pll_addr_byte = (state->config.pll_address << 1) + 1; - - *result = 0; - - ret = jdvbt90502_single_reg_write(state, JDVBT90502_2ND_I2C_REG, - pll_addr_byte); - if (ret) - goto error; - - ret = jdvbt90502_reg_read(state, 0x0100, result, 1); - if (ret) - goto error; - - deb_fe("PLL read val:%02x\n", *result); - return 0; - -error: - deb_fe("%s:ret == %d\n", __func__, ret); - return -EREMOTEIO; -} - - -/* set pll frequency via the demodulator's I2C register */ -static int jdvbt90502_pll_set_freq(struct jdvbt90502_state *state, u32 freq) -{ - int ret; - int retry; - u8 res1; - u8 res2[9]; - - u8 pll_freq_cmd[PLL_CMD_LEN]; - u8 pll_agc_cmd[PLL_CMD_LEN]; - struct i2c_msg msg[2]; - u32 f; - - deb_fe("%s: freq=%d, step=%d\n", __func__, freq, - state->frontend.ops.info.frequency_stepsize_hz); - /* freq -> oscilator frequency conversion. */ - /* freq: 473,000,000 + n*6,000,000 [+ 142857 (center freq. shift)] */ - f = freq / state->frontend.ops.info.frequency_stepsize_hz; - /* add 399[1/7 MHZ] = 57MHz for the IF */ - f += 399; - /* add center frequency shift if necessary */ - if (f % 7 == 0) - f++; - pll_freq_cmd[DEMOD_REDIRECT_REG] = JDVBT90502_2ND_I2C_REG; /* 0xFE */ - pll_freq_cmd[ADDRESS_BYTE] = state->config.pll_address << 1; - pll_freq_cmd[DIVIDER_BYTE1] = (f >> 8) & 0x7F; - pll_freq_cmd[DIVIDER_BYTE2] = f & 0xFF; - pll_freq_cmd[CONTROL_BYTE] = 0xB2; /* ref.divider:28, 4MHz/28=1/7MHz */ - pll_freq_cmd[BANDSWITCH_BYTE] = 0x08; /* UHF band */ - - msg[0].addr = state->config.demod_address; - msg[0].flags = 0; - msg[0].buf = pll_freq_cmd; - msg[0].len = sizeof(pll_freq_cmd); - - ret = i2c_transfer(state->i2c, &msg[0], 1); - if (ret != 1) - goto error; - - udelay(50); - - pll_agc_cmd[DEMOD_REDIRECT_REG] = pll_freq_cmd[DEMOD_REDIRECT_REG]; - pll_agc_cmd[ADDRESS_BYTE] = pll_freq_cmd[ADDRESS_BYTE]; - pll_agc_cmd[DIVIDER_BYTE1] = pll_freq_cmd[DIVIDER_BYTE1]; - pll_agc_cmd[DIVIDER_BYTE2] = pll_freq_cmd[DIVIDER_BYTE2]; - pll_agc_cmd[CONTROL_BYTE] = 0x9A; /* AGC_CTRL instead of BANDSWITCH */ - pll_agc_cmd[AGC_CTRL_BYTE] = 0x50; - /* AGC Time Constant 2s, AGC take-over point:103dBuV(lowest) */ - - msg[1].addr = msg[0].addr; - msg[1].flags = 0; - msg[1].buf = pll_agc_cmd; - msg[1].len = sizeof(pll_agc_cmd); - - ret = i2c_transfer(state->i2c, &msg[1], 1); - if (ret != 1) - goto error; - - /* I don't know what these cmds are for, */ - /* but the USB log on a windows box contains them */ - ret = jdvbt90502_single_reg_write(state, 0x01, 0x40); - ret |= jdvbt90502_single_reg_write(state, 0x01, 0x00); - if (ret) - goto error; - udelay(100); - - /* wait for the demod to be ready? */ -#define RETRY_COUNT 5 - for (retry = 0; retry < RETRY_COUNT; retry++) { - ret = jdvbt90502_reg_read(state, 0x0096, &res1, 1); - if (ret) - goto error; - /* if (res1 != 0x00) goto error; */ - ret = jdvbt90502_reg_read(state, 0x00B0, res2, sizeof(res2)); - if (ret) - goto error; - if (res2[0] >= 0xA7) - break; - msleep(100); - } - if (retry >= RETRY_COUNT) { - deb_fe("%s: FE does not get ready after freq setting.\n", - __func__); - return -EREMOTEIO; - } - - return 0; -error: - deb_fe("%s:ret == %d\n", __func__, ret); - return -EREMOTEIO; -} - -static int jdvbt90502_read_status(struct dvb_frontend *fe, - enum fe_status *state) -{ - u8 result; - int ret; - - *state = FE_HAS_SIGNAL; - - ret = jdvbt90502_pll_read(fe->demodulator_priv, &result); - if (ret) { - deb_fe("%s:ret == %d\n", __func__, ret); - return -EREMOTEIO; - } - - *state = FE_HAS_SIGNAL - | FE_HAS_CARRIER - | FE_HAS_VITERBI - | FE_HAS_SYNC; - - if (result & PLL_STATUS_LOCKED) - *state |= FE_HAS_LOCK; - - return 0; -} - -static int jdvbt90502_read_signal_strength(struct dvb_frontend *fe, - u16 *strength) -{ - int ret; - u8 rbuf[37]; - - *strength = 0; - - /* status register (incl. signal strength) : 0x89 */ - /* TODO: read just the necessary registers [0x8B..0x8D]? */ - ret = jdvbt90502_reg_read(fe->demodulator_priv, 0x0089, - rbuf, sizeof(rbuf)); - - if (ret) { - deb_fe("%s:ret == %d\n", __func__, ret); - return -EREMOTEIO; - } - - /* signal_strength: rbuf[2-4] (24bit BE), use lower 16bit for now. */ - *strength = (rbuf[3] << 8) + rbuf[4]; - if (rbuf[2]) - *strength = 0xffff; - - return 0; -} - -static int jdvbt90502_set_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - - /** - * NOTE: ignore all the parameters except frequency. - * others should be fixed to the proper value for ISDB-T, - * but don't check here. - */ - - struct jdvbt90502_state *state = fe->demodulator_priv; - int ret; - - deb_fe("%s: Freq:%d\n", __func__, p->frequency); - - /* This driver only works on auto mode */ - p->inversion = INVERSION_AUTO; - p->bandwidth_hz = 6000000; - p->code_rate_HP = FEC_AUTO; - p->code_rate_LP = FEC_AUTO; - p->modulation = QAM_64; - p->transmission_mode = TRANSMISSION_MODE_AUTO; - p->guard_interval = GUARD_INTERVAL_AUTO; - p->hierarchy = HIERARCHY_AUTO; - p->delivery_system = SYS_ISDBT; - - ret = jdvbt90502_pll_set_freq(state, p->frequency); - if (ret) { - deb_fe("%s:ret == %d\n", __func__, ret); - return -EREMOTEIO; - } - - return 0; -} - - -/* - * (reg, val) commad list to initialize this module. - * captured on a Windows box. - */ -static u8 init_code[][2] = { - {0x01, 0x40}, - {0x04, 0x38}, - {0x05, 0x40}, - {0x07, 0x40}, - {0x0F, 0x4F}, - {0x11, 0x21}, - {0x12, 0x0B}, - {0x13, 0x2F}, - {0x14, 0x31}, - {0x16, 0x02}, - {0x21, 0xC4}, - {0x22, 0x20}, - {0x2C, 0x79}, - {0x2D, 0x34}, - {0x2F, 0x00}, - {0x30, 0x28}, - {0x31, 0x31}, - {0x32, 0xDF}, - {0x38, 0x01}, - {0x39, 0x78}, - {0x3B, 0x33}, - {0x3C, 0x33}, - {0x48, 0x90}, - {0x51, 0x68}, - {0x5E, 0x38}, - {0x71, 0x00}, - {0x72, 0x08}, - {0x77, 0x00}, - {0xC0, 0x21}, - {0xC1, 0x10}, - {0xE4, 0x1A}, - {0xEA, 0x1F}, - {0x77, 0x00}, - {0x71, 0x00}, - {0x71, 0x00}, - {0x76, 0x0C}, -}; - -static int jdvbt90502_init(struct dvb_frontend *fe) -{ - int i = -1; - int ret; - struct i2c_msg msg; - - struct jdvbt90502_state *state = fe->demodulator_priv; - - deb_fe("%s called.\n", __func__); - - msg.addr = state->config.demod_address; - msg.flags = 0; - msg.len = 2; - for (i = 0; i < ARRAY_SIZE(init_code); i++) { - msg.buf = init_code[i]; - ret = i2c_transfer(state->i2c, &msg, 1); - if (ret != 1) - goto error; - } - fe->dtv_property_cache.delivery_system = SYS_ISDBT; - msleep(100); - - return 0; - -error: - deb_fe("%s: init_code[%d] failed. ret==%d\n", __func__, i, ret); - return -EREMOTEIO; -} - - -static void jdvbt90502_release(struct dvb_frontend *fe) -{ - struct jdvbt90502_state *state = fe->demodulator_priv; - kfree(state); -} - - -static const struct dvb_frontend_ops jdvbt90502_ops; - -struct dvb_frontend *jdvbt90502_attach(struct dvb_usb_device *d) -{ - struct jdvbt90502_state *state = NULL; - - deb_info("%s called.\n", __func__); - - /* allocate memory for the internal state */ - state = kzalloc(sizeof(struct jdvbt90502_state), GFP_KERNEL); - if (state == NULL) - goto error; - - /* setup the state */ - state->i2c = &d->i2c_adap; - state->config = friio_fe_config; - - /* create dvb_frontend */ - state->frontend.ops = jdvbt90502_ops; - state->frontend.demodulator_priv = state; - - if (jdvbt90502_init(&state->frontend) < 0) - goto error; - - return &state->frontend; - -error: - kfree(state); - return NULL; -} - -static const struct dvb_frontend_ops jdvbt90502_ops = { - .delsys = { SYS_ISDBT }, - .info = { - .name = "Comtech JDVBT90502 ISDB-T", - .frequency_min_hz = 473000000, /* UHF 13ch, center */ - .frequency_max_hz = 767142857, /* UHF 62ch, center */ - .frequency_stepsize_hz = JDVBT90502_PLL_CLK / JDVBT90502_PLL_DIVIDER, - - /* NOTE: this driver ignores all parameters but frequency. */ - .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_8_9 | FE_CAN_FEC_AUTO | - FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | - FE_CAN_TRANSMISSION_MODE_AUTO | - FE_CAN_GUARD_INTERVAL_AUTO | - FE_CAN_HIERARCHY_AUTO, - }, - - .release = jdvbt90502_release, - - .init = jdvbt90502_init, - .write = _jdvbt90502_write, - - .set_frontend = jdvbt90502_set_frontend, - - .read_status = jdvbt90502_read_status, - .read_signal_strength = jdvbt90502_read_signal_strength, -}; |