commit d716aa3797b966277cc160fc1f089357365336b5 Author: Markus Rechberger Date: Wed Oct 22 22:11:14 2008 +0200 adding lgdt3304 based driver lgdt3304.c: frontend driver for the lgdt3304 chip, this driver is not compatible with the lgdt330x. Signed-off-by: Markus Rechberger diff --git a/drivers/media/video/empia/lgdt3304/Makefile b/drivers/media/video/empia/lgdt3304/Makefile new file mode 100644 index 0000000..4d261a7 --- /dev/null +++ b/drivers/media/video/empia/lgdt3304/Makefile @@ -0,0 +1,7 @@ +lgdt3304-demod-objs := lgdt3304.o + +obj-m += lgdt3304-demod.o + +EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core +EXTRA_CFLAGS += -Idrivers/media/dvb/frontends +EXTRA_CFLAGS += -DCONFIG_DVB_LGDT3304 diff --git a/drivers/media/video/empia/lgdt3304/lgdt3304.c b/drivers/media/video/empia/lgdt3304/lgdt3304.c new file mode 100644 index 0000000..1e8867b --- /dev/null +++ b/drivers/media/video/empia/lgdt3304/lgdt3304.c @@ -0,0 +1,398 @@ +/* + * Driver for LG ATSC lgdt3304 driver + * + * Copyright (C) 2008 Markus Rechberger + * + */ + +#include +#include +#include +#include "dvb_frontend.h" +#include "lgdt3304.h" + +static unsigned int debug = 0; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug,"lgdt3304 debugging (default off)"); + +#define dprintk(fmt, args...) if (debug) do {\ + printk("lgdt3304 debug: " fmt, ##args); } while (0) + +struct lgdt3304_state +{ + struct dvb_frontend frontend; + fe_modulation_t current_modulation; + __u32 snr; + __u32 current_frequency; + __u8 addr; + struct i2c_adapter *i2c; +}; + +static int i2c_write_demod_bytes (struct dvb_frontend *fe, __u8 *buf, int len) +{ + struct lgdt3304_state *state = fe->demodulator_priv; + struct i2c_msg i2cmsgs = { + .addr = state->addr, + .flags = 0, + .len = 3, + .buf = buf + }; + int i; + int err; + + for (i=0; ii2c, &i2cmsgs, 1))<0) { + printk("%s i2c_transfer error %d\n", __FUNCTION__, err); + if (err < 0) + return err; + else + return -EREMOTEIO; + } + i2cmsgs.buf += 3; + } + return 0; +} + +static int lgdt3304_i2c_read_reg(struct dvb_frontend *fe, unsigned int reg) +{ + struct lgdt3304_state *state = fe->demodulator_priv; + struct i2c_msg i2cmsgs[2]; + int ret; + __u8 buf; + + __u8 regbuf[2] = { reg>>8, reg&0xff }; + + i2cmsgs[0].addr = state->addr; + i2cmsgs[0].flags = 0; + i2cmsgs[0].len = 2; + i2cmsgs[0].buf = regbuf; + + i2cmsgs[1].addr = state->addr; + i2cmsgs[1].flags = I2C_M_RD; + i2cmsgs[1].len = 1; + i2cmsgs[1].buf = &buf; + + if((ret = i2c_transfer(state->i2c, i2cmsgs, 2))<0) { + printk("%s i2c_transfer error %d\n", __FUNCTION__, ret); + return ret; + } + + return buf; +} + +static int lgdt3304_i2c_write_reg(struct dvb_frontend *fe, int reg, int val) +{ + struct lgdt3304_state *state = fe->demodulator_priv; + char buffer[3] = { reg>>8, reg&0xff, val }; + int ret; + + struct i2c_msg i2cmsgs = { + .addr = state->addr, + .flags = 0, + .len = 3, + .buf=buffer + }; + ret = i2c_transfer(state->i2c, &i2cmsgs, 1); + if (ret != 1) { + printk("%s i2c_transfer error %d\n", __FUNCTION__, ret); + return ret; + } + + return 0; +} + + +static int lgdt3304_soft_Reset(struct dvb_frontend *fe) +{ + lgdt3304_i2c_write_reg(fe, 0x0002, 0x9a); + lgdt3304_i2c_write_reg(fe, 0x0002, 0x9b); + mdelay(200); + return 0; +} + +static int lgdt3304_set_parameters(struct dvb_frontend *fe, struct dvb_frontend_parameters *param) { + int err = 0; + + static __u8 lgdt3304_vsb8_data[] = { + /* 16bit , 8bit */ + /* regs , val */ + 0x00, 0x00, 0x02, + 0x00, 0x00, 0x13, + 0x00, 0x0d, 0x02, + 0x00, 0x0e, 0x02, + 0x00, 0x12, 0x32, + 0x00, 0x13, 0xc4, + 0x01, 0x12, 0x17, + 0x01, 0x13, 0x15, + 0x01, 0x14, 0x18, + 0x01, 0x15, 0xff, + 0x01, 0x16, 0x2c, + 0x02, 0x14, 0x67, + 0x02, 0x24, 0x8d, + 0x04, 0x27, 0x12, + 0x04, 0x28, 0x4f, + 0x03, 0x08, 0x80, + 0x03, 0x09, 0x00, + 0x03, 0x0d, 0x00, + 0x03, 0x0e, 0x1c, + 0x03, 0x14, 0xe1, + 0x05, 0x0e, 0x5b, + }; + + /* not yet tested .. */ + static __u8 lgdt3304_qam64_data[] = { + /* 16bit , 8bit */ + /* regs , val */ + 0x00, 0x00, 0x18, + 0x00, 0x0d, 0x02, + //0x00, 0x0e, 0x02, + 0x00, 0x12, 0x2a, + 0x00, 0x13, 0x00, + 0x03, 0x14, 0xe3, + 0x03, 0x0e, 0x1c, + 0x03, 0x08, 0x66, + 0x03, 0x09, 0x66, + 0x03, 0x0a, 0x08, + 0x03, 0x0b, 0x9b, + 0x05, 0x0e, 0x5b, + }; + +#if 0 + /* not yet tested */ + static __u8 lgdt3304_qam256_data[] = { + /* 16bit , 8bit */ + /* regs , val */ + 0x00, 0x00, 0x19, + 0x00, 0x12, 0x2a, + 0x00, 0x13, 0x80, + 0x00, 0x0d, 0x02, + 0x03, 0x14, 0xe3, + + 0x03, 0x0e, 0x1c, + 0x03, 0x08, 0x66, + 0x03, 0x09, 0x66, + 0x03, 0x0a, 0x08, + 0x03, 0x0b, 0x9b, + 0x03, 0x0d, 0x14, + 0x05, 0x0e, 0x5b, + }; +#endif + + /* tested with KWorld a340 */ + static __u8 lgdt3304_qam256_data[] = { + /* 16bit , 8bit */ + /* regs , val */ + 0x00, 0x00, 0x01, //0x19, + 0x00, 0x12, 0x2a, + 0x00, 0x13, 0x80, + 0x00, 0x0d, 0x02, + 0x03, 0x14, 0xe3, + + 0x03, 0x0e, 0x1c, + 0x03, 0x08, 0x66, + 0x03, 0x09, 0x66, + 0x03, 0x0a, 0x08, + 0x03, 0x0b, 0x9b, + + 0x03, 0x0d, 0x14, + //0x05, 0x0e, 0x5b, + 0x01, 0x06, 0x4a, + 0x01, 0x07, 0x3d, + 0x01, 0x08, 0x70, + 0x01, 0x09, 0xa3, + + 0x05, 0x04, 0xfd, + + 0x00, 0x0d, 0x82, + + 0x05, 0x0e, 0x5b, + + 0x05, 0x0e, 0x5b, + + 0x00, 0x02, 0x9a, + + 0x00, 0x02, 0x9b, + + 0x00, 0x00, 0x01, + 0x00, 0x12, 0x2a, + 0x00, 0x13, 0x80, + 0x00, 0x0d, 0x02, + 0x03, 0x14, 0xe3, + + 0x03, 0x0e, 0x1c, + 0x03, 0x08, 0x66, + 0x03, 0x09, 0x66, + 0x03, 0x0a, 0x08, + 0x03, 0x0b, 0x9b, + + 0x03, 0x0d, 0x14, + 0x01, 0x06, 0x4a, + 0x01, 0x07, 0x3d, + 0x01, 0x08, 0x70, + 0x01, 0x09, 0xa3, + + 0x05, 0x04, 0xfd, + + 0x00, 0x0d, 0x82, + + 0x05, 0x0e, 0x5b, + }; + + struct lgdt3304_state *state = fe->demodulator_priv; + if (state->current_modulation != param->u.vsb.modulation) { + switch(param->u.vsb.modulation) { + case VSB_8: + err = i2c_write_demod_bytes(fe, lgdt3304_vsb8_data, + sizeof(lgdt3304_vsb8_data)); + break; + case QAM_64: + err = i2c_write_demod_bytes(fe, lgdt3304_qam64_data, + sizeof(lgdt3304_qam64_data)); + break; + case QAM_256: + err = i2c_write_demod_bytes(fe, lgdt3304_qam256_data, + sizeof(lgdt3304_qam256_data)); + break; + default: + break; + } + + if (err) { + printk("%s error setting modulation\n", __FUNCTION__); + } else { + state->current_modulation = param->u.vsb.modulation; + } + } + state->current_frequency = param->frequency; + + lgdt3304_soft_Reset(fe); + + + if (fe->ops.tuner_ops.set_params) + fe->ops.tuner_ops.set_params(fe, param); + + return 0; +} + +static int lgdt3304_init(struct dvb_frontend *fe) { + return 0; +} + +static int lgdt3304_sleep(struct dvb_frontend *fe) { + return 0; +} + + +static int lgdt3304_read_status(struct dvb_frontend *fe, fe_status_t *status) +{ + struct lgdt3304_state *state = fe->demodulator_priv; + int r011d; + int qam_lck; + + *status = 0; + dprintk("lgdt read status\n"); + + r011d = lgdt3304_i2c_read_reg(fe, 0x011d); + + dprintk("%02x\n", r011d); + + switch(state->current_modulation) { + case VSB_8: + if (r011d & 0x80) { + dprintk("VSB Locked\n"); + *status |= FE_HAS_CARRIER; + *status |= FE_HAS_LOCK; + *status |= FE_HAS_SYNC; + *status |= FE_HAS_SIGNAL; + } + break; + case QAM_64: + case QAM_256: + qam_lck = r011d & 0x7; + switch(qam_lck) { + case 0x0: dprintk("Unlock\n"); + break; + case 0x4: dprintk("1st Lock in acquisition state\n"); + break; + case 0x6: dprintk("2nd Lock in acquisition state\n"); + break; + case 0x7: dprintk("Final Lock in good reception state\n"); + *status |= FE_HAS_CARRIER; + *status |= FE_HAS_LOCK; + *status |= FE_HAS_SYNC; + *status |= FE_HAS_SIGNAL; + break; + } + break; + default: + printk("%s unhandled modulation\n", __FUNCTION__); + } + + + return 0; +} + +static int lgdt3304_read_ber(struct dvb_frontend *fe, __u32 *ber) +{ + dprintk("read ber\n"); + return 0; +} + +static int lgdt3304_read_snr(struct dvb_frontend *fe, __u16 *snr) +{ + dprintk("read snr\n"); + return 0; +} + +static int lgdt3304_read_ucblocks(struct dvb_frontend *fe, __u32 *ucblocks) +{ + dprintk("read ucblocks\n"); + return 0; +} + +static void lgdt3304_release(struct dvb_frontend *fe) +{ + struct lgdt3304_state *state = (struct lgdt3304_state *)fe->demodulator_priv; + kfree(state); +} + +static struct dvb_frontend_ops demod_lgdt3304={ + .info = { + .name = "LG 3304", + .type = FE_ATSC, + .frequency_min = 54000000, + .frequency_max = 858000000, + .frequency_stepsize = 62500, + .symbol_rate_min = 5056941, + .symbol_rate_max = 10762000, + .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB + }, + .init = lgdt3304_init, + .sleep = lgdt3304_sleep, + .set_frontend = lgdt3304_set_parameters, + .read_snr = lgdt3304_read_snr, + .read_ber = lgdt3304_read_ber, + .read_status = lgdt3304_read_status, + .read_ucblocks = lgdt3304_read_ucblocks, + .release = lgdt3304_release, +}; + +struct dvb_frontend* lgdt3304_attach(const struct lgdt3304_config *config, + struct i2c_adapter *i2c) +{ + + struct lgdt3304_state *state; + state = kzalloc(sizeof(struct lgdt3304_state), GFP_KERNEL); + memset(state, 0x0, sizeof(struct lgdt3304_state)); + state->addr = config->i2c_address; + state->i2c = i2c; + + memcpy(&state->frontend.ops, &demod_lgdt3304, sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + return &state->frontend; +} + +EXPORT_SYMBOL_GPL(lgdt3304_attach); +MODULE_AUTHOR("Markus Rechberger "); +MODULE_DESCRIPTION("LGE LGDT3304 DVB-T demodulator driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/video/empia/lgdt3304/lgdt3304.h b/drivers/media/video/empia/lgdt3304/lgdt3304.h new file mode 100644 index 0000000..fc409fe --- /dev/null +++ b/drivers/media/video/empia/lgdt3304/lgdt3304.h @@ -0,0 +1,45 @@ +/* + * Driver for DVB-T lgdt3304 demodulator + * + * Copyright (C) 2008 Markus Rechberger + * + * 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.= + */ + +#ifndef LGDT3304_H +#define LGDT3304_H + +#include + +struct lgdt3304_config +{ + /* demodulator's I2C address */ + u8 i2c_address; +}; + +#if defined(CONFIG_DVB_LGDT3304) || (defined(CONFIG_DVB_LGDT3304_MODULE) && defined(MODULE)) +extern struct dvb_frontend* lgdt3304_attach(const struct lgdt3304_config *config, + struct i2c_adapter *i2c); +#else +static inline struct dvb_frontend* lgdt3304_attach(const struct lgdt3304_config *config, + struct i2c_adapter *i2c) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +#endif /* CONFIG_DVB_LGDT */ + +#endif /* LGDT3304_H */