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175 lines
3.9 KiB
175 lines
3.9 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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Mantis VP-2040 driver |
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Copyright (C) Manu Abraham ([email protected]) |
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*/ |
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#include <linux/signal.h> |
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#include <linux/sched.h> |
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#include <linux/interrupt.h> |
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#include <media/dmxdev.h> |
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#include <media/dvbdev.h> |
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#include <media/dvb_demux.h> |
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#include <media/dvb_frontend.h> |
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#include <media/dvb_net.h> |
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#include "tda1002x.h" |
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#include "mantis_common.h" |
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#include "mantis_ioc.h" |
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#include "mantis_dvb.h" |
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#include "mantis_vp2040.h" |
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#define MANTIS_MODEL_NAME "VP-2040" |
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#define MANTIS_DEV_TYPE "DVB-C" |
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static struct tda1002x_config vp2040_tda1002x_cu1216_config = { |
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.demod_address = 0x18 >> 1, |
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.invert = 1, |
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}; |
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static struct tda10023_config vp2040_tda10023_cu1216_config = { |
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.demod_address = 0x18 >> 1, |
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.invert = 1, |
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}; |
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static int tda1002x_cu1216_tuner_set(struct dvb_frontend *fe) |
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{ |
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struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
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struct mantis_pci *mantis = fe->dvb->priv; |
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struct i2c_adapter *adapter = &mantis->adapter; |
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u8 buf[6]; |
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struct i2c_msg msg = {.addr = 0x60, .flags = 0, .buf = buf, .len = sizeof(buf)}; |
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int i; |
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#define CU1216_IF 36125000 |
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#define TUNER_MUL 62500 |
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u32 div = (p->frequency + CU1216_IF + TUNER_MUL / 2) / TUNER_MUL; |
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buf[0] = (div >> 8) & 0x7f; |
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buf[1] = div & 0xff; |
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buf[2] = 0xce; |
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buf[3] = (p->frequency < 150000000 ? 0x01 : |
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p->frequency < 445000000 ? 0x02 : 0x04); |
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buf[4] = 0xde; |
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buf[5] = 0x20; |
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if (fe->ops.i2c_gate_ctrl) |
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fe->ops.i2c_gate_ctrl(fe, 1); |
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if (i2c_transfer(adapter, &msg, 1) != 1) |
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return -EIO; |
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/* wait for the pll lock */ |
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msg.flags = I2C_M_RD; |
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msg.len = 1; |
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for (i = 0; i < 20; i++) { |
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if (fe->ops.i2c_gate_ctrl) |
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fe->ops.i2c_gate_ctrl(fe, 1); |
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if (i2c_transfer(adapter, &msg, 1) == 1 && (buf[0] & 0x40)) |
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break; |
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msleep(10); |
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} |
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/* switch the charge pump to the lower current */ |
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msg.flags = 0; |
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msg.len = 2; |
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msg.buf = &buf[2]; |
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buf[2] &= ~0x40; |
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if (fe->ops.i2c_gate_ctrl) |
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fe->ops.i2c_gate_ctrl(fe, 1); |
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if (i2c_transfer(adapter, &msg, 1) != 1) |
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return -EIO; |
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return 0; |
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} |
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static u8 read_pwm(struct mantis_pci *mantis) |
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{ |
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struct i2c_adapter *adapter = &mantis->adapter; |
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u8 b = 0xff; |
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u8 pwm; |
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struct i2c_msg msg[] = { |
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{.addr = 0x50, .flags = 0, .buf = &b, .len = 1}, |
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{.addr = 0x50, .flags = I2C_M_RD, .buf = &pwm, .len = 1} |
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}; |
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if ((i2c_transfer(adapter, msg, 2) != 2) |
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|| (pwm == 0xff)) |
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pwm = 0x48; |
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return pwm; |
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} |
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static int vp2040_frontend_init(struct mantis_pci *mantis, struct dvb_frontend *fe) |
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{ |
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struct i2c_adapter *adapter = &mantis->adapter; |
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int err = 0; |
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err = mantis_frontend_power(mantis, POWER_ON); |
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if (err == 0) { |
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mantis_frontend_soft_reset(mantis); |
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msleep(250); |
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dprintk(MANTIS_ERROR, 1, "Probing for CU1216 (DVB-C)"); |
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fe = dvb_attach(tda10021_attach, &vp2040_tda1002x_cu1216_config, |
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adapter, |
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read_pwm(mantis)); |
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if (fe) { |
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dprintk(MANTIS_ERROR, 1, |
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"found Philips CU1216 DVB-C frontend (TDA10021) @ 0x%02x", |
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vp2040_tda1002x_cu1216_config.demod_address); |
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} else { |
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fe = dvb_attach(tda10023_attach, &vp2040_tda10023_cu1216_config, |
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adapter, |
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read_pwm(mantis)); |
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if (fe) { |
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dprintk(MANTIS_ERROR, 1, |
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"found Philips CU1216 DVB-C frontend (TDA10023) @ 0x%02x", |
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vp2040_tda1002x_cu1216_config.demod_address); |
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} |
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} |
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if (fe) { |
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fe->ops.tuner_ops.set_params = tda1002x_cu1216_tuner_set; |
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dprintk(MANTIS_ERROR, 1, "Mantis DVB-C Philips CU1216 frontend attach success"); |
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} else { |
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return -1; |
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} |
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} else { |
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dprintk(MANTIS_ERROR, 1, "Frontend on <%s> POWER ON failed! <%d>", |
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adapter->name, |
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err); |
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return -EIO; |
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} |
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mantis->fe = fe; |
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dprintk(MANTIS_DEBUG, 1, "Done!"); |
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return 0; |
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} |
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struct mantis_hwconfig vp2040_config = { |
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.model_name = MANTIS_MODEL_NAME, |
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.dev_type = MANTIS_DEV_TYPE, |
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.ts_size = MANTIS_TS_204, |
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.baud_rate = MANTIS_BAUD_9600, |
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.parity = MANTIS_PARITY_NONE, |
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.bytes = 0, |
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.frontend_init = vp2040_frontend_init, |
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.power = GPIF_A12, |
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.reset = GPIF_A13, |
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};
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