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path: root/drivers/media/usb/dvb-usb/friio-fe.c
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Diffstat (limited to 'drivers/media/usb/dvb-usb/friio-fe.c')
-rw-r--r--drivers/media/usb/dvb-usb/friio-fe.c440
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,
-};
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-03 18:37:27 +0300