+++ /dev/null
-/*
- * Driver for LG ATSC lgdt3304 driver
- *
- * Copyright (C) 2008 Markus Rechberger <mrechberger@sundtek.de>
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#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; i<len-1; i+=3){
- if((err = i2c_transfer(state->i2c, &i2cmsgs, 1))<0) {
- printk("%s i2c_transfer error %d\n", __func__, 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", __func__, 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", __func__, 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,
- };
-
-
- /* 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", __func__);
- } 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", __func__);
- }
-
-
- 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);
- if (state == NULL)
- return NULL;
- 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 <mrechberger@empiatech.com>");
-MODULE_DESCRIPTION("LGE LGDT3304 DVB-T demodulator driver");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * Driver for DVB-T lgdt3304 demodulator
- *
- * Copyright (C) 2008 Markus Rechberger <mrechberger@gmail.com>
- *
- * 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 <linux/dvb/frontend.h>
-
-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 */
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff