--- /dev/null
+/*
+ * 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;
+}
Code Review / kvmfornfv.git / blobdiff