diff options
Diffstat (limited to 'drivers/media/dvb/pt1/va1j5jf8007t.c')
| -rw-r--r-- | drivers/media/dvb/pt1/va1j5jf8007t.c | 536 |
1 files changed, 0 insertions, 536 deletions
diff --git a/drivers/media/dvb/pt1/va1j5jf8007t.c b/drivers/media/dvb/pt1/va1j5jf8007t.c deleted file mode 100644 index 2db15159d514..000000000000 --- a/drivers/media/dvb/pt1/va1j5jf8007t.c +++ /dev/null @@ -1,536 +0,0 @@ -/* - * ISDB-T driver for VA1J5JF8007/VA1J5JF8011 - * - * Copyright (C) 2009 HIRANO Takahito <hiranotaka@zng.info> - * - * based on pt1dvr - http://pt1dvr.sourceforge.jp/ - * by Tomoaki Ishikawa <tomy@users.sourceforge.jp> - * - * 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/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/i2c.h> -#include "dvb_frontend.h" -#include "dvb_math.h" -#include "va1j5jf8007t.h" - -enum va1j5jf8007t_tune_state { - VA1J5JF8007T_IDLE, - VA1J5JF8007T_SET_FREQUENCY, - VA1J5JF8007T_CHECK_FREQUENCY, - VA1J5JF8007T_SET_MODULATION, - VA1J5JF8007T_CHECK_MODULATION, - VA1J5JF8007T_TRACK, - VA1J5JF8007T_ABORT, -}; - -struct va1j5jf8007t_state { - const struct va1j5jf8007t_config *config; - struct i2c_adapter *adap; - struct dvb_frontend fe; - enum va1j5jf8007t_tune_state tune_state; -}; - -static int va1j5jf8007t_read_snr(struct dvb_frontend *fe, u16 *snr) -{ - struct va1j5jf8007t_state *state; - u8 addr; - int i; - u8 write_buf[1], read_buf[1]; - struct i2c_msg msgs[2]; - s32 word, x, y; - - state = fe->demodulator_priv; - addr = state->config->demod_address; - - word = 0; - for (i = 0; i < 3; i++) { - write_buf[0] = 0x8b + i; - - msgs[0].addr = addr; - msgs[0].flags = 0; - msgs[0].len = sizeof(write_buf); - msgs[0].buf = write_buf; - - msgs[1].addr = addr; - msgs[1].flags = I2C_M_RD; - msgs[1].len = sizeof(read_buf); - msgs[1].buf = read_buf; - - if (i2c_transfer(state->adap, msgs, 2) != 2) - return -EREMOTEIO; - - word <<= 8; - word |= read_buf[0]; - } - - if (!word) - return -EIO; - - x = 10 * (intlog10(0x540000 * 100 / word) - (2 << 24)); - y = (24ll << 46) / 1000000; - y = ((s64)y * x >> 30) - (16ll << 40) / 10000; - y = ((s64)y * x >> 29) + (398ll << 35) / 10000; - y = ((s64)y * x >> 30) + (5491ll << 29) / 10000; - y = ((s64)y * x >> 30) + (30965ll << 23) / 10000; - *snr = y >> 15; - return 0; -} - -static int va1j5jf8007t_get_frontend_algo(struct dvb_frontend *fe) -{ - return DVBFE_ALGO_HW; -} - -static int -va1j5jf8007t_read_status(struct dvb_frontend *fe, fe_status_t *status) -{ - struct va1j5jf8007t_state *state; - - state = fe->demodulator_priv; - - switch (state->tune_state) { - case VA1J5JF8007T_IDLE: - case VA1J5JF8007T_SET_FREQUENCY: - case VA1J5JF8007T_CHECK_FREQUENCY: - *status = 0; - return 0; - - - case VA1J5JF8007T_SET_MODULATION: - case VA1J5JF8007T_CHECK_MODULATION: - case VA1J5JF8007T_ABORT: - *status |= FE_HAS_SIGNAL; - return 0; - - case VA1J5JF8007T_TRACK: - *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK; - return 0; - } - - BUG(); -} - -struct va1j5jf8007t_cb_map { - u32 frequency; - u8 cb; -}; - -static const struct va1j5jf8007t_cb_map va1j5jf8007t_cb_maps[] = { - { 90000000, 0x80 }, - { 140000000, 0x81 }, - { 170000000, 0xa1 }, - { 220000000, 0x62 }, - { 330000000, 0xa2 }, - { 402000000, 0xe2 }, - { 450000000, 0x64 }, - { 550000000, 0x84 }, - { 600000000, 0xa4 }, - { 700000000, 0xc4 }, -}; - -static u8 va1j5jf8007t_lookup_cb(u32 frequency) -{ - int i; - const struct va1j5jf8007t_cb_map *map; - - for (i = 0; i < ARRAY_SIZE(va1j5jf8007t_cb_maps); i++) { - map = &va1j5jf8007t_cb_maps[i]; - if (frequency < map->frequency) - return map->cb; - } - return 0xe4; -} - -static int va1j5jf8007t_set_frequency(struct va1j5jf8007t_state *state) -{ - u32 frequency; - u16 word; - u8 buf[6]; - struct i2c_msg msg; - - frequency = state->fe.dtv_property_cache.frequency; - - word = (frequency + 71428) / 142857 + 399; - buf[0] = 0xfe; - buf[1] = 0xc2; - buf[2] = word >> 8; - buf[3] = word; - buf[4] = 0x80; - buf[5] = va1j5jf8007t_lookup_cb(frequency); - - msg.addr = state->config->demod_address; - msg.flags = 0; - msg.len = sizeof(buf); - msg.buf = buf; - - if (i2c_transfer(state->adap, &msg, 1) != 1) - return -EREMOTEIO; - - return 0; -} - -static int -va1j5jf8007t_check_frequency(struct va1j5jf8007t_state *state, int *lock) -{ - u8 addr; - u8 write_buf[2], read_buf[1]; - struct i2c_msg msgs[2]; - - addr = state->config->demod_address; - - write_buf[0] = 0xfe; - write_buf[1] = 0xc3; - - msgs[0].addr = addr; - msgs[0].flags = 0; - msgs[0].len = sizeof(write_buf); - msgs[0].buf = write_buf; - - msgs[1].addr = addr; - msgs[1].flags = I2C_M_RD; - msgs[1].len = sizeof(read_buf); - msgs[1].buf = read_buf; - - if (i2c_transfer(state->adap, msgs, 2) != 2) - return -EREMOTEIO; - - *lock = read_buf[0] & 0x40; - return 0; -} - -static int va1j5jf8007t_set_modulation(struct va1j5jf8007t_state *state) -{ - u8 buf[2]; - struct i2c_msg msg; - - buf[0] = 0x01; - buf[1] = 0x40; - - msg.addr = state->config->demod_address; - msg.flags = 0; - msg.len = sizeof(buf); - msg.buf = buf; - - if (i2c_transfer(state->adap, &msg, 1) != 1) - return -EREMOTEIO; - - return 0; -} - -static int va1j5jf8007t_check_modulation(struct va1j5jf8007t_state *state, - int *lock, int *retry) -{ - u8 addr; - u8 write_buf[1], read_buf[1]; - struct i2c_msg msgs[2]; - - addr = state->config->demod_address; - - write_buf[0] = 0x80; - - msgs[0].addr = addr; - msgs[0].flags = 0; - msgs[0].len = sizeof(write_buf); - msgs[0].buf = write_buf; - - msgs[1].addr = addr; - msgs[1].flags = I2C_M_RD; - msgs[1].len = sizeof(read_buf); - msgs[1].buf = read_buf; - - if (i2c_transfer(state->adap, msgs, 2) != 2) - return -EREMOTEIO; - - *lock = !(read_buf[0] & 0x10); - *retry = read_buf[0] & 0x80; - return 0; -} - -static int -va1j5jf8007t_tune(struct dvb_frontend *fe, - bool re_tune, - unsigned int mode_flags, unsigned int *delay, - fe_status_t *status) -{ - struct va1j5jf8007t_state *state; - int ret; - int lock = 0, retry = 0; - - state = fe->demodulator_priv; - - if (re_tune) - state->tune_state = VA1J5JF8007T_SET_FREQUENCY; - - switch (state->tune_state) { - case VA1J5JF8007T_IDLE: - *delay = 3 * HZ; - *status = 0; - return 0; - - case VA1J5JF8007T_SET_FREQUENCY: - ret = va1j5jf8007t_set_frequency(state); - if (ret < 0) - return ret; - - state->tune_state = VA1J5JF8007T_CHECK_FREQUENCY; - *delay = 0; - *status = 0; - return 0; - - case VA1J5JF8007T_CHECK_FREQUENCY: - ret = va1j5jf8007t_check_frequency(state, &lock); - if (ret < 0) - return ret; - - if (!lock) { - *delay = (HZ + 999) / 1000; - *status = 0; - return 0; - } - - state->tune_state = VA1J5JF8007T_SET_MODULATION; - *delay = 0; - *status = FE_HAS_SIGNAL; - return 0; - - case VA1J5JF8007T_SET_MODULATION: - ret = va1j5jf8007t_set_modulation(state); - if (ret < 0) - return ret; - - state->tune_state = VA1J5JF8007T_CHECK_MODULATION; - *delay = 0; - *status = FE_HAS_SIGNAL; - return 0; - - case VA1J5JF8007T_CHECK_MODULATION: - ret = va1j5jf8007t_check_modulation(state, &lock, &retry); - if (ret < 0) - return ret; - - if (!lock) { - if (!retry) { - state->tune_state = VA1J5JF8007T_ABORT; - *delay = 3 * HZ; - *status = FE_HAS_SIGNAL; - return 0; - } - *delay = (HZ + 999) / 1000; - *status = FE_HAS_SIGNAL; - return 0; - } - - state->tune_state = VA1J5JF8007T_TRACK; - /* fall through */ - - case VA1J5JF8007T_TRACK: - *delay = 3 * HZ; - *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK; - return 0; - - case VA1J5JF8007T_ABORT: - *delay = 3 * HZ; - *status = FE_HAS_SIGNAL; - return 0; - } - - BUG(); -} - -static int va1j5jf8007t_init_frequency(struct va1j5jf8007t_state *state) -{ - u8 buf[7]; - struct i2c_msg msg; - - buf[0] = 0xfe; - buf[1] = 0xc2; - buf[2] = 0x01; - buf[3] = 0x8f; - buf[4] = 0xc1; - buf[5] = 0x80; - buf[6] = 0x80; - - msg.addr = state->config->demod_address; - msg.flags = 0; - msg.len = sizeof(buf); - msg.buf = buf; - - if (i2c_transfer(state->adap, &msg, 1) != 1) - return -EREMOTEIO; - - return 0; -} - -static int va1j5jf8007t_set_sleep(struct va1j5jf8007t_state *state, int sleep) -{ - u8 buf[2]; - struct i2c_msg msg; - - buf[0] = 0x03; - buf[1] = sleep ? 0x90 : 0x80; - - msg.addr = state->config->demod_address; - msg.flags = 0; - msg.len = sizeof(buf); - msg.buf = buf; - - if (i2c_transfer(state->adap, &msg, 1) != 1) - return -EREMOTEIO; - - return 0; -} - -static int va1j5jf8007t_sleep(struct dvb_frontend *fe) -{ - struct va1j5jf8007t_state *state; - int ret; - - state = fe->demodulator_priv; - - ret = va1j5jf8007t_init_frequency(state); - if (ret < 0) - return ret; - - return va1j5jf8007t_set_sleep(state, 1); -} - -static int va1j5jf8007t_init(struct dvb_frontend *fe) -{ - struct va1j5jf8007t_state *state; - - state = fe->demodulator_priv; - state->tune_state = VA1J5JF8007T_IDLE; - - return va1j5jf8007t_set_sleep(state, 0); -} - -static void va1j5jf8007t_release(struct dvb_frontend *fe) -{ - struct va1j5jf8007t_state *state; - state = fe->demodulator_priv; - kfree(state); -} - -static struct dvb_frontend_ops va1j5jf8007t_ops = { - .delsys = { SYS_ISDBT }, - .info = { - .name = "VA1J5JF8007/VA1J5JF8011 ISDB-T", - .frequency_min = 90000000, - .frequency_max = 770000000, - .frequency_stepsize = 142857, - .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_AUTO | - FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO | - FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO, - }, - - .read_snr = va1j5jf8007t_read_snr, - .get_frontend_algo = va1j5jf8007t_get_frontend_algo, - .read_status = va1j5jf8007t_read_status, - .tune = va1j5jf8007t_tune, - .sleep = va1j5jf8007t_sleep, - .init = va1j5jf8007t_init, - .release = va1j5jf8007t_release, -}; - -static const u8 va1j5jf8007t_20mhz_prepare_bufs[][2] = { - {0x03, 0x90}, {0x14, 0x8f}, {0x1c, 0x2a}, {0x1d, 0xa8}, {0x1e, 0xa2}, - {0x22, 0x83}, {0x31, 0x0d}, {0x32, 0xe0}, {0x39, 0xd3}, {0x3a, 0x00}, - {0x5c, 0x40}, {0x5f, 0x80}, {0x75, 0x02}, {0x76, 0x4e}, {0x77, 0x03}, - {0xef, 0x01} -}; - -static const u8 va1j5jf8007t_25mhz_prepare_bufs[][2] = { - {0x03, 0x90}, {0x1c, 0x2a}, {0x1d, 0xa8}, {0x1e, 0xa2}, {0x22, 0x83}, - {0x3a, 0x00}, {0x5c, 0x40}, {0x5f, 0x80}, {0x75, 0x0a}, {0x76, 0x4c}, - {0x77, 0x03}, {0xef, 0x01} -}; - -int va1j5jf8007t_prepare(struct dvb_frontend *fe) -{ - struct va1j5jf8007t_state *state; - const u8 (*bufs)[2]; - int size; - u8 buf[2]; - struct i2c_msg msg; - int i; - - state = fe->demodulator_priv; - - switch (state->config->frequency) { - case VA1J5JF8007T_20MHZ: - bufs = va1j5jf8007t_20mhz_prepare_bufs; - size = ARRAY_SIZE(va1j5jf8007t_20mhz_prepare_bufs); - break; - case VA1J5JF8007T_25MHZ: - bufs = va1j5jf8007t_25mhz_prepare_bufs; - size = ARRAY_SIZE(va1j5jf8007t_25mhz_prepare_bufs); - break; - default: - return -EINVAL; - } - - msg.addr = state->config->demod_address; - msg.flags = 0; - msg.len = sizeof(buf); - msg.buf = buf; - - for (i = 0; i < size; i++) { - memcpy(buf, bufs[i], sizeof(buf)); - if (i2c_transfer(state->adap, &msg, 1) != 1) - return -EREMOTEIO; - } - - return va1j5jf8007t_init_frequency(state); -} - -struct dvb_frontend * -va1j5jf8007t_attach(const struct va1j5jf8007t_config *config, - struct i2c_adapter *adap) -{ - struct va1j5jf8007t_state *state; - struct dvb_frontend *fe; - u8 buf[2]; - struct i2c_msg msg; - - state = kzalloc(sizeof(struct va1j5jf8007t_state), GFP_KERNEL); - if (!state) - return NULL; - - state->config = config; - state->adap = adap; - - fe = &state->fe; - memcpy(&fe->ops, &va1j5jf8007t_ops, sizeof(struct dvb_frontend_ops)); - fe->demodulator_priv = state; - - buf[0] = 0x01; - buf[1] = 0x80; - - msg.addr = state->config->demod_address; - msg.flags = 0; - msg.len = sizeof(buf); - msg.buf = buf; - - if (i2c_transfer(state->adap, &msg, 1) != 1) { - kfree(state); - return NULL; - } - - return fe; -} |
