From 47b75ec14653f12f9fd6fd76bfd5891ba35e1e79 Mon Sep 17 00:00:00 2001 From: Palash Bandyopadhyay Date: Tue, 6 Jul 2010 16:40:58 -0300 Subject: [PATCH] [media] s5h1432: Add new s5h1432 driver Introduce a new driver for the s5h1432 Signed-off-by: Palash Bandyopadhyay Signed-off-by: Devin Heitmueller Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/Kconfig | 7 + drivers/media/dvb/frontends/Makefile | 1 + drivers/media/dvb/frontends/s5h1432.c | 440 ++++++++++++++++++++++++++++++++++ drivers/media/dvb/frontends/s5h1432.h | 96 ++++++++ 4 files changed, 544 insertions(+) create mode 100644 drivers/media/dvb/frontends/s5h1432.c create mode 100644 drivers/media/dvb/frontends/s5h1432.h diff --git a/drivers/media/dvb/frontends/Kconfig b/drivers/media/dvb/frontends/Kconfig index d83632c..35cb8c5 100644 --- a/drivers/media/dvb/frontends/Kconfig +++ b/drivers/media/dvb/frontends/Kconfig @@ -257,6 +257,13 @@ config DVB_CX22702 help A DVB-T tuner module. Say Y when you want to support this frontend. +config DVB_S5H1432 + tristate "Samsung s5h1432 demodulator (OFDM)" + depends on DVB_CORE && I2C + default m if DVB_FE_CUSTOMISE + help + A DVB-T tuner module. Say Y when you want to support this frontend. + config DVB_DRX397XD tristate "Micronas DRX3975D/DRX3977D based" depends on DVB_CORE && I2C diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile index 9b59e41..63cf3d0 100644 --- a/drivers/media/dvb/frontends/Makefile +++ b/drivers/media/dvb/frontends/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_DVB_STB0899) += stb0899.o obj-$(CONFIG_DVB_STB6100) += stb6100.o obj-$(CONFIG_DVB_SP8870) += sp8870.o obj-$(CONFIG_DVB_CX22700) += cx22700.o +obj-$(CONFIG_DVB_S5H1432) += s5h1432.o obj-$(CONFIG_DVB_CX24110) += cx24110.o obj-$(CONFIG_DVB_TDA8083) += tda8083.o obj-$(CONFIG_DVB_L64781) += l64781.o diff --git a/drivers/media/dvb/frontends/s5h1432.c b/drivers/media/dvb/frontends/s5h1432.c new file mode 100644 index 0000000..cff164c --- /dev/null +++ b/drivers/media/dvb/frontends/s5h1432.c @@ -0,0 +1,440 @@ +/* + Samsung s5h1432 DVB-T demodulator driver + + Copyright (C) 2009 Bill Liu + + 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 +#include +#include +#include +#include +#include +#include "dvb_frontend.h" +#include "s5h1432.h" + +struct s5h1432_state { + + struct i2c_adapter *i2c; + + /* configuration settings */ + const struct s5h1432_config *config; + + struct dvb_frontend frontend; + + fe_modulation_t current_modulation; + unsigned int first_tune:1; + + u32 current_frequency; + int if_freq; + + u8 inversion; +}; + +static int debug; + +#define dprintk(arg...) do { \ + if (debug) \ + printk(arg); \ + } while (0) + + +static int s5h1432_writereg(struct s5h1432_state *state, + u8 addr, u8 reg, u8 data) +{ + int ret; + u8 buf[] = { reg, data }; + + struct i2c_msg msg = { .addr = addr, .flags = 0, .buf = buf, .len = 2 }; + + ret = i2c_transfer(state->i2c, &msg, 1); + + if (ret != 1) + printk(KERN_ERR "%s: writereg error 0x%02x 0x%02x 0x%04x, " + "ret == %i)\n", __func__, addr, reg, data, ret); + + return (ret != 1) ? -1 : 0; +} + +static u8 s5h1432_readreg(struct s5h1432_state *state, u8 addr, u8 reg) +{ + int ret; + u8 b0[] = { reg }; + u8 b1[] = { 0 }; + + struct i2c_msg msg[] = { + { .addr = addr, .flags = 0, .buf = b0, .len = 1 }, + { .addr = addr, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; + + ret = i2c_transfer(state->i2c, msg, 2); + + if (ret != 2) + printk(KERN_ERR "%s: readreg error (ret == %i)\n", + __func__, ret); + return b1[0]; +} + +static int s5h1432_sleep(struct dvb_frontend *fe) +{ + return 0; +} + +static int s5h1432_set_channel_bandwidth(struct dvb_frontend *fe, u32 bandwidth) +{ + + struct s5h1432_state *state = fe->demodulator_priv; + + u8 reg = 0; + + + /* Register [0x2E] bit 3:2 : 8MHz = 0; 7MHz = 1; 6MHz = 2*/ + reg = s5h1432_readreg(state, S5H1432_I2C_TOP_ADDR, 0x2E); + reg &= ~(0x0C); + switch (bandwidth) { + case 6: + reg |= 0x08; + break; + case 7: + reg |= 0x04; + break; + case 8: + reg |= 0x00; + break; + default: + return 0; + } + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x2E, reg); + return 1; +} + +static int s5h1432_set_IF(struct dvb_frontend *fe, u32 ifFreqHz) +{ + + struct s5h1432_state *state = fe->demodulator_priv; + + switch (ifFreqHz) { + case TAIWAN_HI_IF_FREQ_44_MHZ: + { + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x55); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x55); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0x15); + break; + } + case EUROPE_HI_IF_FREQ_36_MHZ: + { + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x00); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x00); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0x40); + break; + } + case IF_FREQ_6_MHZ: + { + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x00); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x00); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0xe0); + break; + } + case IF_FREQ_3point3_MHZ: + { + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x66); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x66); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0xEE); + break; + } + case IF_FREQ_3point5_MHZ: + { + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x55); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x55); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0xED); + break; + } + case IF_FREQ_4_MHZ: + { + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0xAA); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0xAA); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0xEA); + break; + } + default: + { + u32 value = 0; + value = (u32) (((48000 - (ifFreqHz / 1000)) * 512 * + (u32) 32768) / (48 * 1000)); + printk(KERN_INFO "Default IFFreq %d :reg value = 0x%x \n", + ifFreqHz, value); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , + (u8) value & 0xFF); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , + (u8)(value>>8) & 0xFF); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , + (u8)(value>>16) & 0xFF); + break; + } + + } + + return 1; +} + +/* Talk to the demod, set the FEC, GUARD, QAM settings etc */ +static int s5h1432_set_frontend(struct dvb_frontend *fe, + struct dvb_frontend_parameters *p) +{ + u32 dvb_bandwidth = 8; + struct s5h1432_state *state = fe->demodulator_priv; + + if (p->frequency == state->current_frequency) { + /*current_frequency = p->frequency;*/ + /*state->current_frequency = p->frequency;*/ + } else { + fe->ops.tuner_ops.set_params(fe, p); msleep(300); + s5h1432_set_channel_bandwidth(fe, dvb_bandwidth); + switch (p->u.ofdm.bandwidth) { + case BANDWIDTH_6_MHZ: + dvb_bandwidth = 6; + s5h1432_set_IF(fe, IF_FREQ_4_MHZ); + break; + case BANDWIDTH_7_MHZ: + dvb_bandwidth = 7; + s5h1432_set_IF(fe, IF_FREQ_4_MHZ); + break; + case BANDWIDTH_8_MHZ: + dvb_bandwidth = 8; + s5h1432_set_IF(fe, IF_FREQ_4_MHZ); + break; + default: + return 0; + } + /*fe->ops.tuner_ops.set_params(fe, p);*/ +/*Soft Reset chip*/ + msleep(30); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a); + msleep(30); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b); + + + s5h1432_set_channel_bandwidth(fe, dvb_bandwidth); + switch (p->u.ofdm.bandwidth) { + case BANDWIDTH_6_MHZ: + dvb_bandwidth = 6; + s5h1432_set_IF(fe, IF_FREQ_4_MHZ); + break; + case BANDWIDTH_7_MHZ: + dvb_bandwidth = 7; + s5h1432_set_IF(fe, IF_FREQ_4_MHZ); + break; + case BANDWIDTH_8_MHZ: + dvb_bandwidth = 8; + s5h1432_set_IF(fe, IF_FREQ_4_MHZ); + break; + default: + return 0; + } + /*fe->ops.tuner_ops.set_params(fe,p);*/ +/*Soft Reset chip*/ + msleep(30); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a); + msleep(30); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b); + + } + + state->current_frequency = p->frequency; + + return 0; +} + + +static int s5h1432_init(struct dvb_frontend *fe) +{ + struct s5h1432_state *state = fe->demodulator_priv; + + u8 reg = 0; + state->current_frequency = 0; + printk(KERN_INFO " s5h1432_init().\n"); + + + /*Set VSB mode as default, this also does a soft reset*/ + /*Initialize registers*/ + + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x04, 0xa8); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x05, 0x01); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x07, 0x70); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x19, 0x80); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1b, 0x9D); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1c, 0x30); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1d, 0x20); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1e, 0x1B); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x2e, 0x40); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x42, 0x84); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x50, 0x5a); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x5a, 0xd3); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x68, 0x50); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xb8, 0x3c); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xc4, 0x10); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xcc, 0x9c); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xDA, 0x00); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe1, 0x94); +/* s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xf4, 0xa1);*/ + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xf9, 0x00); + +/*For NXP tuner*/ + + /*Set 3.3MHz as default IF frequency*/ + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe4 , 0x66); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe5 , 0x66); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0xe7 , 0xEE); + /* Set reg 0x1E to get the full dynamic range */ + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x1e, 0x31); + +/*Mode setting in demod*/ + reg = s5h1432_readreg(state, S5H1432_I2C_TOP_ADDR, 0x42); + reg |= 0x80; + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x42, reg); + /*Serial mode*/ + +/*Soft Reset chip*/ + + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1a); + msleep(30); + s5h1432_writereg(state, S5H1432_I2C_TOP_ADDR, 0x09, 0x1b); + + + return 0; +} + + +static int s5h1432_read_status(struct dvb_frontend *fe, fe_status_t *status) +{ + return 0; +} + + + +static int s5h1432_read_signal_strength(struct dvb_frontend *fe, + u16 *signal_strength) +{ + return 0; +} + +static int s5h1432_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + return 0; +} + +static int s5h1432_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + + return 0; +} + +static int s5h1432_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + return 0; +} + +static int s5h1432_get_frontend(struct dvb_frontend *fe, + struct dvb_frontend_parameters *p) +{ + return 0; +} + +static int s5h1432_get_tune_settings(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings *tune) +{ + return 0; +} + +static void s5h1432_release(struct dvb_frontend *fe) +{ + struct s5h1432_state *state = fe->demodulator_priv; + kfree(state); +} + +static struct dvb_frontend_ops s5h1432_ops; + +struct dvb_frontend *s5h1432_attach(const struct s5h1432_config *config, + struct i2c_adapter *i2c) +{ + struct s5h1432_state *state = NULL; + + printk(KERN_INFO " Enter s5h1432_attach(). attach success!\n"); + /* allocate memory for the internal state */ + state = kmalloc(sizeof(struct s5h1432_state), GFP_KERNEL); + if (state == NULL) + goto error; + + /* setup the state */ + state->config = config; + state->i2c = i2c; + state->current_modulation = QAM_16; + state->inversion = state->config->inversion; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, &s5h1432_ops, + sizeof(struct dvb_frontend_ops)); + + state->frontend.demodulator_priv = state; + + return &state->frontend; + +error: + kfree(state); + return NULL; +} +EXPORT_SYMBOL(s5h1432_attach); + +static struct dvb_frontend_ops s5h1432_ops = { + + .info = { + .name = "Samsung s5h1432 DVB-T Frontend", + .type = FE_OFDM, + .frequency_min = 177000000, + .frequency_max = 858000000, + .frequency_stepsize = 166666, + .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | + FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | + FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | + FE_CAN_HIERARCHY_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | + FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER + }, + + .init = s5h1432_init, + .sleep = s5h1432_sleep, + .set_frontend = s5h1432_set_frontend, + .get_frontend = s5h1432_get_frontend, + .get_tune_settings = s5h1432_get_tune_settings, + .read_status = s5h1432_read_status, + .read_ber = s5h1432_read_ber, + .read_signal_strength = s5h1432_read_signal_strength, + .read_snr = s5h1432_read_snr, + .read_ucblocks = s5h1432_read_ucblocks, + .release = s5h1432_release, +}; + +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Enable verbose debug messages"); + +MODULE_DESCRIPTION("Samsung s5h1432 DVB-T Demodulator driver"); +MODULE_AUTHOR("Bill Liu"); +MODULE_LICENSE("GPL"); + +/* + * Local variables: + * c-basic-offset: 8 + */ diff --git a/drivers/media/dvb/frontends/s5h1432.h b/drivers/media/dvb/frontends/s5h1432.h new file mode 100644 index 0000000..241a904 --- /dev/null +++ b/drivers/media/dvb/frontends/s5h1432.h @@ -0,0 +1,96 @@ +/* + Samsung s5h1432 VSB/QAM demodulator driver + + Copyright (C) 2009 Bill Liu + + 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 __S5H1432_H__ +#define __S5H1432_H__ + +#include + +#define S5H1432_I2C_TOP_ADDR (0x02 >> 1) + +#define TAIWAN_HI_IF_FREQ_44_MHZ 44000000 +#define EUROPE_HI_IF_FREQ_36_MHZ 36000000 +#define IF_FREQ_6_MHZ 6000000 +#define IF_FREQ_3point3_MHZ 3300000 +#define IF_FREQ_3point5_MHZ 3500000 +#define IF_FREQ_4_MHZ 4000000 + +struct s5h1432_config { + + /* serial/parallel output */ +#define S5H1432_PARALLEL_OUTPUT 0 +#define S5H1432_SERIAL_OUTPUT 1 + u8 output_mode; + + /* GPIO Setting */ +#define S5H1432_GPIO_OFF 0 +#define S5H1432_GPIO_ON 1 + u8 gpio; + + /* MPEG signal timing */ +#define S5H1432_MPEGTIMING_CONTINOUS_INVERTING_CLOCK 0 +#define S5H1432_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK 1 +#define S5H1432_MPEGTIMING_NONCONTINOUS_INVERTING_CLOCK 2 +#define S5H1432_MPEGTIMING_NONCONTINOUS_NONINVERTING_CLOCK 3 + u16 mpeg_timing; + + /* IF Freq for QAM and VSB in KHz */ +#define S5H1432_IF_3250 3250 +#define S5H1432_IF_3500 3500 +#define S5H1432_IF_4000 4000 +#define S5H1432_IF_5380 5380 +#define S5H1432_IF_44000 44000 +#define S5H1432_VSB_IF_DEFAULT s5h1432_IF_44000 +#define S5H1432_QAM_IF_DEFAULT s5h1432_IF_44000 + u16 qam_if; + u16 vsb_if; + + /* Spectral Inversion */ +#define S5H1432_INVERSION_OFF 0 +#define S5H1432_INVERSION_ON 1 + u8 inversion; + + /* Return lock status based on tuner lock, or demod lock */ +#define S5H1432_TUNERLOCKING 0 +#define S5H1432_DEMODLOCKING 1 + u8 status_mode; +}; + +#if defined(CONFIG_DVB_S5H1432) || \ + (defined(CONFIG_DVB_S5H1432_MODULE) && defined(MODULE)) +extern struct dvb_frontend *s5h1432_attach(const struct s5h1432_config *config, + struct i2c_adapter *i2c); +#else +static inline struct dvb_frontend *s5h1432_attach( + const struct s5h1432_config *config, + struct i2c_adapter *i2c) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +#endif /* CONFIG_DVB_s5h1432 */ + +#endif /* __s5h1432_H__ */ + +/* + * Local variables: + * c-basic-offset: 8 + */ -- 2.7.4