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V4L/DVB (7644): Adding support for the NXP TDA10048HN DVB OFDM demodulator
Adding support for the NXP TDA10048HN DVB OFDM demodulator Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Steven Toth
Mauro Carvalho Chehab
parent
6b92b3bd7a
commit
7bbb1ce4f3
@ -188,6 +188,14 @@ config DVB_DIB7000P
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A DVB-T tuner module. Designed for mobile usage. Say Y when you want
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to support this frontend.
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config DVB_TDA10048
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tristate "Philips TDA10048HN based"
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depends on DVB_CORE && I2C
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default m if DVB_FE_CUSTOMISE
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select FW_LOADER
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help
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A DVB-T tuner module. Say Y when you want to support this frontend.
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comment "DVB-C (cable) frontends"
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depends on DVB_CORE
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@ -54,3 +54,4 @@ obj-$(CONFIG_DVB_S5H1409) += s5h1409.o
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obj-$(CONFIG_DVB_TUNER_XC5000) += xc5000.o
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obj-$(CONFIG_DVB_TUNER_ITD1000) += itd1000.o
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obj-$(CONFIG_DVB_AU8522) += au8522.o
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obj-$(CONFIG_DVB_TDA10048) += tda10048.o
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704
drivers/media/dvb/frontends/tda10048.c
Normal file
704
drivers/media/dvb/frontends/tda10048.c
Normal file
@ -0,0 +1,704 @@
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/*
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NXP TDA10048HN DVB OFDM demodulator driver
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Copyright (C) 2008 Steven Toth <stoth@hauppauge.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include "dvb_frontend.h"
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#include "tda10048.h"
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#define TDA10048_DEFAULT_FIRMWARE "dvb-fe-tda10048-1.0.fw"
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#define TDA10048_DEFAULT_FIRMWARE_SIZE 24878
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/* Register name definitions */
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#define TDA10048_IDENTITY 0x00
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#define TDA10048_VERSION 0x01
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#define TDA10048_DSP_CODE_CPT 0x0C
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#define TDA10048_DSP_CODE_IN 0x0E
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#define TDA10048_IN_CONF1 0x10
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#define TDA10048_IN_CONF2 0x11
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#define TDA10048_IN_CONF3 0x12
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#define TDA10048_OUT_CONF1 0x14
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#define TDA10048_OUT_CONF2 0x15
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#define TDA10048_OUT_CONF3 0x16
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#define TDA10048_AUTO 0x18
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#define TDA10048_SYNC_STATUS 0x1A
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#define TDA10048_CONF_C4_1 0x1E
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#define TDA10048_CONF_C4_2 0x1F
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#define TDA10048_CODE_IN_RAM 0x20
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#define TDA10048_CHANNEL_INFO_1_R 0x22
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#define TDA10048_CHANNEL_INFO_2_R 0x23
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#define TDA10048_CHANNEL_INFO1 0x24
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#define TDA10048_CHANNEL_INFO2 0x25
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#define TDA10048_TIME_ERROR_R 0x26
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#define TDA10048_TIME_ERROR 0x27
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#define TDA10048_FREQ_ERROR_LSB_R 0x28
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#define TDA10048_FREQ_ERROR_MSB_R 0x29
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#define TDA10048_FREQ_ERROR_LSB 0x2A
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#define TDA10048_FREQ_ERROR_MSB 0x2B
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#define TDA10048_IT_SEL 0x30
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#define TDA10048_IT_STAT 0x32
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#define TDA10048_DSP_AD_LSB 0x3C
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#define TDA10048_DSP_AD_MSB 0x3D
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#define TDA10048_DSP_REF_LSB 0x3E
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#define TDA10048_DSP_REF_MSB 0x3F
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#define TDA10048_CONF_TRISTATE1 0x44
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#define TDA10048_CONF_TRISTATE2 0x45
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#define TDA10048_CONF_POLARITY 0x46
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#define TDA10048_GPIO_SP_DS0 0x48
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#define TDA10048_GPIO_SP_DS1 0x49
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#define TDA10048_GPIO_SP_DS2 0x4A
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#define TDA10048_GPIO_SP_DS3 0x4B
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#define TDA10048_GPIO_OUT_SEL 0x4C
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#define TDA10048_GPIO_SELECT 0x4D
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#define TDA10048_IC_MODE 0x4E
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#define TDA10048_CONF_XO 0x50
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#define TDA10048_CONF_PLL1 0x51
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#define TDA10048_CONF_PLL2 0x52
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#define TDA10048_CONF_PLL3 0x53
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#define TDA10048_CONF_ADC 0x54
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#define TDA10048_CONF_ADC_2 0x55
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#define TDA10048_CONF_C1_1 0x60
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#define TDA10048_CONF_C1_3 0x62
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#define TDA10048_AGC_CONF 0x70
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#define TDA10048_AGC_THRESHOLD_LSB 0x72
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#define TDA10048_AGC_THRESHOLD_MSB 0x73
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#define TDA10048_AGC_RENORM 0x74
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#define TDA10048_AGC_GAINS 0x76
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#define TDA10048_AGC_TUN_MIN 0x78
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#define TDA10048_AGC_TUN_MAX 0x79
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#define TDA10048_AGC_IF_MIN 0x7A
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#define TDA10048_AGC_IF_MAX 0x7B
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#define TDA10048_AGC_TUN_LEVEL 0x7E
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#define TDA10048_AGC_IF_LEVEL 0x7F
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#define TDA10048_DIG_AGC_LEVEL 0x81
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#define TDA10048_FREQ_PHY2_LSB 0x86
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#define TDA10048_FREQ_PHY2_MSB 0x87
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#define TDA10048_TIME_INVWREF_LSB 0x88
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#define TDA10048_TIME_INVWREF_MSB 0x89
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#define TDA10048_TIME_WREF_LSB 0x8A
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#define TDA10048_TIME_WREF_MID1 0x8B
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#define TDA10048_TIME_WREF_MID2 0x8C
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#define TDA10048_TIME_WREF_MSB 0x8D
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#define TDA10048_NP_OUT 0xA2
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#define TDA10048_CELL_ID_LSB 0xA4
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#define TDA10048_CELL_ID_MSB 0xA5
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#define TDA10048_EXTTPS_ODD 0xAA
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#define TDA10048_EXTTPS_EVEN 0xAB
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#define TDA10048_TPS_LENGTH 0xAC
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#define TDA10048_FREE_REG_1 0xB2
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#define TDA10048_FREE_REG_2 0xB3
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#define TDA10048_CONF_C3_1 0xC0
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#define TDA10048_CYBER_CTRL 0xC2
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#define TDA10048_CBER_NMAX_LSB 0xC4
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#define TDA10048_CBER_NMAX_MSB 0xC5
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#define TDA10048_CBER_LSB 0xC6
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#define TDA10048_CBER_MSB 0xC7
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#define TDA10048_VBER_LSB 0xC8
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#define TDA10048_VBER_MID 0xC9
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#define TDA10048_VBER_MSB 0xCA
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#define TDA10048_CYBER_LUT 0xCC
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#define TDA10048_UNCOR_CTRL 0xCD
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#define TDA10048_UNCOR_CPT_LSB 0xCE
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#define TDA10048_UNCOR_CPT_MSB 0xCF
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#define TDA10048_SOFT_IT_C3 0xD6
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#define TDA10048_CONF_TS2 0xE0
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#define TDA10048_CONF_TS1 0xE1
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static unsigned int debug;
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#define dprintk(level, fmt, arg...)\
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do { if (debug >= level)\
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printk(KERN_DEBUG "tda10048: " fmt, ## arg);\
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} while (0)
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struct tda10048_state {
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struct i2c_adapter *i2c;
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/* configuration settings */
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const struct tda10048_config *config;
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struct dvb_frontend frontend;
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int fwloaded;
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};
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static struct init_tab {
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u8 reg;
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u16 data;
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} init_tab[] = {
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{ TDA10048_CONF_PLL1, 0x08 },
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{ TDA10048_CONF_ADC_2, 0x00 },
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{ TDA10048_CONF_C4_1, 0x00 },
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{ TDA10048_CONF_PLL1, 0x0f },
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{ TDA10048_CONF_PLL2, 0x0a },
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{ TDA10048_CONF_PLL3, 0x43 },
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{ TDA10048_FREQ_PHY2_LSB, 0x02 },
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{ TDA10048_FREQ_PHY2_MSB, 0x0a },
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{ TDA10048_TIME_WREF_LSB, 0xbd },
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{ TDA10048_TIME_WREF_MID1, 0xe4 },
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{ TDA10048_TIME_WREF_MID2, 0xa8 },
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{ TDA10048_TIME_WREF_MSB, 0x02 },
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{ TDA10048_TIME_INVWREF_LSB, 0x04 },
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{ TDA10048_TIME_INVWREF_MSB, 0x06 },
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{ TDA10048_CONF_C4_1, 0x00 },
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{ TDA10048_CONF_C1_1, 0xa8 },
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{ TDA10048_AGC_CONF, 0x16 },
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{ TDA10048_CONF_C1_3, 0x0b },
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{ TDA10048_AGC_TUN_MIN, 0x00 },
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{ TDA10048_AGC_TUN_MAX, 0xff },
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{ TDA10048_AGC_IF_MIN, 0x00 },
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{ TDA10048_AGC_IF_MAX, 0xff },
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{ TDA10048_AGC_THRESHOLD_MSB, 0x00 },
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{ TDA10048_AGC_THRESHOLD_LSB, 0x70 },
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{ TDA10048_CYBER_CTRL, 0x38 },
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{ TDA10048_AGC_GAINS, 0x12 },
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{ TDA10048_CONF_XO, 0x00 },
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{ TDA10048_CONF_TS1, 0x07 },
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{ TDA10048_IC_MODE, 0x00 },
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{ TDA10048_CONF_TS2, 0xc0 },
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{ TDA10048_CONF_TRISTATE1, 0x21 },
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{ TDA10048_CONF_TRISTATE2, 0x00 },
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{ TDA10048_CONF_POLARITY, 0x00 },
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{ TDA10048_CONF_C4_2, 0x04 },
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{ TDA10048_CONF_ADC, 0x60 },
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{ TDA10048_CONF_ADC_2, 0x10 },
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{ TDA10048_CONF_ADC, 0x60 },
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{ TDA10048_CONF_ADC_2, 0x00 },
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{ TDA10048_CONF_C1_1, 0xa8 },
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{ TDA10048_UNCOR_CTRL, 0x00 },
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{ TDA10048_CONF_C4_2, 0x04 },
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};
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static int tda10048_writereg(struct tda10048_state *state, u8 reg, u8 data)
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{
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int ret;
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u8 buf [] = { reg, data };
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struct i2c_msg msg = {
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.addr = state->config->demod_address,
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.flags = 0, .buf = buf, .len = 2 };
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dprintk(2, "%s(reg = 0x%02x, data = 0x%02x)\n", __func__, reg, data);
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ret = i2c_transfer(state->i2c, &msg, 1);
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if (ret != 1)
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printk("%s: writereg error (ret == %i)\n", __func__, ret);
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return (ret != 1) ? -1 : 0;
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}
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static u8 tda10048_readreg(struct tda10048_state *state, u8 reg)
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{
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int ret;
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u8 b0 [] = { reg };
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u8 b1 [] = { 0 };
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struct i2c_msg msg [] = {
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{ .addr = state->config->demod_address,
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.flags = 0, .buf = b0, .len = 1 },
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{ .addr = state->config->demod_address,
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.flags = I2C_M_RD, .buf = b1, .len = 1 } };
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dprintk(2, "%s(reg = 0x%02x)\n", __func__, reg);
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ret = i2c_transfer(state->i2c, msg, 2);
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if (ret != 2)
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printk(KERN_ERR "%s: readreg error (ret == %i)\n",
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__func__, ret);
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return b1[0];
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}
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static int tda10048_writeregbulk(struct tda10048_state *state, u8 reg,
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u8 *data, u16 len)
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{
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int ret = -EREMOTEIO;
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struct i2c_msg msg;
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u8 *buf;
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dprintk(2, "%s(%d, ?, len = %d)\n", __func__, reg, len);
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buf = kmalloc(len + 1, GFP_KERNEL);
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if (buf == NULL) {
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ret = -ENOMEM;
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goto error;
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}
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*buf = reg;
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memcpy(buf + 1, data, len);
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msg.addr = state->config->demod_address;
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msg.flags = 0;
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msg.buf = buf;
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msg.len = len + 1;
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dprintk(2, "%s(): write len = %d\n",
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__func__, msg.len);
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ret = i2c_transfer(state->i2c, &msg, 1);
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if (ret != 1) {
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printk(KERN_ERR "%s(): writereg error err %i\n",
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__func__, ret);
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ret = -EREMOTEIO;
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}
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error:
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kfree(buf);
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return ret;
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}
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static int tda10048_firmware_upload(struct dvb_frontend *fe)
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{
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struct tda10048_state *state = fe->demodulator_priv;
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const struct firmware *fw;
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int ret;
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int pos = 0;
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int cnt;
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u8 wlen = state->config->fwbulkwritelen;
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if ((wlen != TDA10048_BULKWRITE_200) && (wlen != TDA10048_BULKWRITE_50))
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wlen = TDA10048_BULKWRITE_200;
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/* request the firmware, this will block and timeout */
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printk(KERN_INFO "%s: waiting for firmware upload (%s)...\n",
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__func__,
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TDA10048_DEFAULT_FIRMWARE);
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ret = request_firmware(&fw, TDA10048_DEFAULT_FIRMWARE,
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&state->i2c->dev);
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if (ret) {
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printk(KERN_ERR "%s: Upload failed. (file not found?)\n",
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__func__);
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return -EIO;
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} else {
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printk(KERN_INFO "%s: firmware read %Zu bytes.\n",
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__func__,
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fw->size);
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ret = 0;
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}
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if (fw->size != TDA10048_DEFAULT_FIRMWARE_SIZE) {
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printk(KERN_ERR "%s: firmware incorrect size\n", __func__);
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return -EIO;
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} else {
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printk(KERN_INFO "%s: firmware uploading\n", __func__);
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/* Soft reset */
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tda10048_writereg(state, TDA10048_CONF_TRISTATE1,
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tda10048_readreg(state, TDA10048_CONF_TRISTATE1)
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& 0xfe);
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tda10048_writereg(state, TDA10048_CONF_TRISTATE1,
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tda10048_readreg(state, TDA10048_CONF_TRISTATE1)
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| 0x01);
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/* Put the demod into host download mode */
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tda10048_writereg(state, TDA10048_CONF_C4_1,
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tda10048_readreg(state, TDA10048_CONF_C4_1) & 0xf9);
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/* Boot the DSP */
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tda10048_writereg(state, TDA10048_CONF_C4_1,
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tda10048_readreg(state, TDA10048_CONF_C4_1) | 0x08);
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/* Prepare for download */
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tda10048_writereg(state, TDA10048_DSP_CODE_CPT, 0);
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/* Download the firmware payload */
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while (pos < fw->size) {
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if ((fw->size - pos) > wlen)
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cnt = wlen;
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else
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cnt = fw->size - pos;
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tda10048_writeregbulk(state, TDA10048_DSP_CODE_IN,
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&fw->data[pos], cnt);
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pos += cnt;
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}
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ret = -EIO;
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/* Wait up to 250ms for the DSP to boot */
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for (cnt = 0; cnt < 250 ; cnt += 10) {
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msleep(10);
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if (tda10048_readreg(state, TDA10048_SYNC_STATUS)
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& 0x40) {
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ret = 0;
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break;
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}
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}
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}
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release_firmware(fw);
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if (ret == 0) {
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printk(KERN_INFO "%s: firmware uploaded\n", __func__);
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state->fwloaded = 1;
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} else
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printk(KERN_ERR "%s: firmware upload failed\n", __func__);
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return ret;
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}
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static int tda10048_set_inversion(struct dvb_frontend *fe, int inversion)
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{
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struct tda10048_state *state = fe->demodulator_priv;
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dprintk(1, "%s(%d)\n", __func__, inversion);
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if (inversion == TDA10048_INVERSION_ON)
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tda10048_writereg(state, TDA10048_CONF_C1_1,
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tda10048_readreg(state, TDA10048_CONF_C1_1) | 0x20);
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else
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tda10048_writereg(state, TDA10048_CONF_C1_1,
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tda10048_readreg(state, TDA10048_CONF_C1_1) & 0xdf);
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return 0;
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}
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||||
|
||||
/* Retrieve the demod settings */
|
||||
static int tda10048_get_tps(struct tda10048_state *state,
|
||||
struct dvb_ofdm_parameters *p)
|
||||
{
|
||||
u8 val;
|
||||
|
||||
/* Make sure the TPS regs are valid */
|
||||
if (!(tda10048_readreg(state, TDA10048_AUTO) & 0x01))
|
||||
return -EAGAIN;
|
||||
|
||||
val = tda10048_readreg(state, TDA10048_OUT_CONF2);
|
||||
switch ((val & 0x60) >> 5) {
|
||||
case 0: p->constellation = QPSK; break;
|
||||
case 1: p->constellation = QAM_16; break;
|
||||
case 2: p->constellation = QAM_64; break;
|
||||
}
|
||||
switch ((val & 0x18) >> 3) {
|
||||
case 0: p->hierarchy_information = HIERARCHY_NONE; break;
|
||||
case 1: p->hierarchy_information = HIERARCHY_1; break;
|
||||
case 2: p->hierarchy_information = HIERARCHY_2; break;
|
||||
case 3: p->hierarchy_information = HIERARCHY_4; break;
|
||||
}
|
||||
switch (val & 0x07) {
|
||||
case 0: p->code_rate_HP = FEC_1_2; break;
|
||||
case 1: p->code_rate_HP = FEC_2_3; break;
|
||||
case 2: p->code_rate_HP = FEC_3_4; break;
|
||||
case 3: p->code_rate_HP = FEC_5_6; break;
|
||||
case 4: p->code_rate_HP = FEC_7_8; break;
|
||||
}
|
||||
|
||||
val = tda10048_readreg(state, TDA10048_OUT_CONF3);
|
||||
switch (val & 0x07) {
|
||||
case 0: p->code_rate_LP = FEC_1_2; break;
|
||||
case 1: p->code_rate_LP = FEC_2_3; break;
|
||||
case 2: p->code_rate_LP = FEC_3_4; break;
|
||||
case 3: p->code_rate_LP = FEC_5_6; break;
|
||||
case 4: p->code_rate_LP = FEC_7_8; break;
|
||||
}
|
||||
|
||||
val = tda10048_readreg(state, TDA10048_OUT_CONF1);
|
||||
switch ((val & 0x0c) >> 2) {
|
||||
case 0: p->guard_interval = GUARD_INTERVAL_1_32; break;
|
||||
case 1: p->guard_interval = GUARD_INTERVAL_1_16; break;
|
||||
case 2: p->guard_interval = GUARD_INTERVAL_1_8; break;
|
||||
case 3: p->guard_interval = GUARD_INTERVAL_1_4; break;
|
||||
}
|
||||
switch (val & 0x02) {
|
||||
case 0: p->transmission_mode = TRANSMISSION_MODE_2K; break;
|
||||
case 1: p->transmission_mode = TRANSMISSION_MODE_8K; break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tda10048_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
dprintk(1, "%s(%d)\n", __func__, enable);
|
||||
|
||||
if (enable)
|
||||
return tda10048_writereg(state, TDA10048_CONF_C4_1,
|
||||
tda10048_readreg(state, TDA10048_CONF_C4_1) | 0x02);
|
||||
else
|
||||
return tda10048_writereg(state, TDA10048_CONF_C4_1,
|
||||
tda10048_readreg(state, TDA10048_CONF_C4_1) & 0xfd);
|
||||
}
|
||||
|
||||
static int tda10048_output_mode(struct dvb_frontend *fe, int serial)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
dprintk(1, "%s(%d)\n", __func__, serial);
|
||||
|
||||
/* Ensure pins are out of tri-state */
|
||||
tda10048_writereg(state, TDA10048_CONF_TRISTATE1, 0x21);
|
||||
tda10048_writereg(state, TDA10048_CONF_TRISTATE2, 0x00);
|
||||
|
||||
if (serial) {
|
||||
tda10048_writereg(state, TDA10048_IC_MODE, 0x80 | 0x20);
|
||||
tda10048_writereg(state, TDA10048_CONF_TS2, 0xc0);
|
||||
} else {
|
||||
tda10048_writereg(state, TDA10048_IC_MODE, 0x00);
|
||||
tda10048_writereg(state, TDA10048_CONF_TS2, 0x01);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Talk to the demod, set the FEC, GUARD, QAM settings etc */
|
||||
/* TODO: Support manual tuning with specific params */
|
||||
static int tda10048_set_frontend(struct dvb_frontend *fe,
|
||||
struct dvb_frontend_parameters *p)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
|
||||
dprintk(1, "%s(frequency=%d)\n", __func__, p->frequency);
|
||||
|
||||
if (fe->ops.tuner_ops.set_params) {
|
||||
|
||||
if (fe->ops.i2c_gate_ctrl)
|
||||
fe->ops.i2c_gate_ctrl(fe, 1);
|
||||
|
||||
fe->ops.tuner_ops.set_params(fe, p);
|
||||
|
||||
if (fe->ops.i2c_gate_ctrl)
|
||||
fe->ops.i2c_gate_ctrl(fe, 0);
|
||||
}
|
||||
|
||||
/* Enable demod TPS auto detection and begin acquisition */
|
||||
tda10048_writereg(state, TDA10048_AUTO, 0x57);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Establish sane defaults and load firmware. */
|
||||
static int tda10048_init(struct dvb_frontend *fe)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
int ret = 0, i;
|
||||
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
|
||||
/* Apply register defaults */
|
||||
for (i = 0; i < ARRAY_SIZE(init_tab); i++)
|
||||
tda10048_writereg(state, init_tab[i].reg, init_tab[i].data);
|
||||
|
||||
if (state->fwloaded == 0)
|
||||
ret = tda10048_firmware_upload(fe);
|
||||
|
||||
/* Set either serial or parallel */
|
||||
tda10048_output_mode(fe, state->config->output_mode);
|
||||
|
||||
/* set inversion */
|
||||
tda10048_set_inversion(fe, state->config->inversion);
|
||||
|
||||
/* Ensure we leave the gate closed */
|
||||
tda10048_i2c_gate_ctrl(fe, 0);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int tda10048_read_status(struct dvb_frontend *fe, fe_status_t *status)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
u8 reg;
|
||||
|
||||
*status = 0;
|
||||
|
||||
reg = tda10048_readreg(state, TDA10048_SYNC_STATUS);
|
||||
|
||||
dprintk(1, "%s() status =0x%02x\n", __func__, reg);
|
||||
|
||||
if (reg & 0x02)
|
||||
*status |= FE_HAS_CARRIER;
|
||||
|
||||
if (reg & 0x04)
|
||||
*status |= FE_HAS_SIGNAL;
|
||||
|
||||
if (reg & 0x08) {
|
||||
*status |= FE_HAS_LOCK;
|
||||
*status |= FE_HAS_VITERBI;
|
||||
*status |= FE_HAS_SYNC;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tda10048_read_ber(struct dvb_frontend *fe, u32 *ber)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
|
||||
/* TODO: A reset may be required here */
|
||||
*ber = tda10048_readreg(state, TDA10048_CBER_MSB) << 8 |
|
||||
tda10048_readreg(state, TDA10048_CBER_LSB);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tda10048_read_signal_strength(struct dvb_frontend *fe,
|
||||
u16 *signal_strength)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
u16 v;
|
||||
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
|
||||
v = tda10048_readreg(state, TDA10048_NP_OUT);
|
||||
if (v == 0)
|
||||
*signal_strength = 100;
|
||||
else {
|
||||
/* TODO: Apply .db math for correct values */
|
||||
*signal_strength = v;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tda10048_read_snr(struct dvb_frontend *fe, u16 *snr)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
|
||||
/* TODO: This result should be the same as signal strength */
|
||||
*snr = tda10048_readreg(state, TDA10048_NP_OUT);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tda10048_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
|
||||
*ucblocks = tda10048_readreg(state, TDA10048_UNCOR_CPT_MSB) << 8 |
|
||||
tda10048_readreg(state, TDA10048_UNCOR_CPT_LSB);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tda10048_get_frontend(struct dvb_frontend *fe,
|
||||
struct dvb_frontend_parameters *p)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
|
||||
p->inversion = tda10048_readreg(state, TDA10048_CONF_C1_1)
|
||||
& 0x20 ? INVERSION_ON : INVERSION_OFF;
|
||||
|
||||
return tda10048_get_tps(state, &p->u.ofdm);
|
||||
}
|
||||
|
||||
static int tda10048_get_tune_settings(struct dvb_frontend *fe,
|
||||
struct dvb_frontend_tune_settings *tune)
|
||||
{
|
||||
tune->min_delay_ms = 1000;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void tda10048_release(struct dvb_frontend *fe)
|
||||
{
|
||||
struct tda10048_state *state = fe->demodulator_priv;
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
kfree(state);
|
||||
}
|
||||
|
||||
static struct dvb_frontend_ops tda10048_ops;
|
||||
|
||||
struct dvb_frontend *tda10048_attach(const struct tda10048_config *config,
|
||||
struct i2c_adapter *i2c)
|
||||
{
|
||||
struct tda10048_state *state = NULL;
|
||||
|
||||
dprintk(1, "%s()\n", __func__);
|
||||
|
||||
/* allocate memory for the internal state */
|
||||
state = kmalloc(sizeof(struct tda10048_state), GFP_KERNEL);
|
||||
if (state == NULL)
|
||||
goto error;
|
||||
|
||||
/* setup the state */
|
||||
state->config = config;
|
||||
state->i2c = i2c;
|
||||
state->fwloaded = 0;
|
||||
|
||||
/* check if the demod is present */
|
||||
if (tda10048_readreg(state, TDA10048_IDENTITY) != 0x048)
|
||||
goto error;
|
||||
|
||||
/* create dvb_frontend */
|
||||
memcpy(&state->frontend.ops, &tda10048_ops,
|
||||
sizeof(struct dvb_frontend_ops));
|
||||
state->frontend.demodulator_priv = state;
|
||||
|
||||
/* Leave the gate closed */
|
||||
tda10048_i2c_gate_ctrl(&state->frontend, 0);
|
||||
|
||||
return &state->frontend;
|
||||
|
||||
error:
|
||||
kfree(state);
|
||||
return NULL;
|
||||
}
|
||||
EXPORT_SYMBOL(tda10048_attach);
|
||||
|
||||
static struct dvb_frontend_ops tda10048_ops = {
|
||||
|
||||
.info = {
|
||||
.name = "NXP TDA10048HN DVB-T",
|
||||
.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
|
||||
},
|
||||
|
||||
.release = tda10048_release,
|
||||
.init = tda10048_init,
|
||||
.i2c_gate_ctrl = tda10048_i2c_gate_ctrl,
|
||||
.set_frontend = tda10048_set_frontend,
|
||||
.get_frontend = tda10048_get_frontend,
|
||||
.get_tune_settings = tda10048_get_tune_settings,
|
||||
.read_status = tda10048_read_status,
|
||||
.read_ber = tda10048_read_ber,
|
||||
.read_signal_strength = tda10048_read_signal_strength,
|
||||
.read_snr = tda10048_read_snr,
|
||||
.read_ucblocks = tda10048_read_ucblocks,
|
||||
};
|
||||
|
||||
module_param(debug, int, 0644);
|
||||
MODULE_PARM_DESC(debug, "Enable verbose debug messages");
|
||||
|
||||
MODULE_DESCRIPTION("NXP TDA10048HN DVB-T Demodulator driver");
|
||||
MODULE_AUTHOR("Steven Toth");
|
||||
MODULE_LICENSE("GPL");
|
||||
63
drivers/media/dvb/frontends/tda10048.h
Normal file
63
drivers/media/dvb/frontends/tda10048.h
Normal file
@ -0,0 +1,63 @@
|
||||
/*
|
||||
NXP TDA10048HN DVB OFDM demodulator driver
|
||||
|
||||
Copyright (C) 2008 Steven Toth <stoth@hauppauge.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 TDA10048_H
|
||||
#define TDA10048_H
|
||||
|
||||
#include <linux/dvb/frontend.h>
|
||||
#include <linux/firmware.h>
|
||||
|
||||
struct tda10048_config {
|
||||
|
||||
/* the demodulator's i2c address */
|
||||
u8 demod_address;
|
||||
|
||||
/* serial/parallel output */
|
||||
#define TDA10048_PARALLEL_OUTPUT 0
|
||||
#define TDA10048_SERIAL_OUTPUT 1
|
||||
u8 output_mode;
|
||||
|
||||
#define TDA10048_BULKWRITE_200 200
|
||||
#define TDA10048_BULKWRITE_50 50
|
||||
u8 fwbulkwritelen;
|
||||
|
||||
/* Spectral Inversion */
|
||||
#define TDA10048_INVERSION_OFF 0
|
||||
#define TDA10048_INVERSION_ON 1
|
||||
u8 inversion;
|
||||
};
|
||||
|
||||
#if defined(CONFIG_DVB_TDA10048) || \
|
||||
(defined(CONFIG_DVB_TDA10048_MODULE) && defined(MODULE))
|
||||
extern struct dvb_frontend *tda10048_attach(
|
||||
const struct tda10048_config *config,
|
||||
struct i2c_adapter *i2c);
|
||||
#else
|
||||
static inline struct dvb_frontend *tda10048_attach(
|
||||
const struct tda10048_config *config,
|
||||
struct i2c_adapter *i2c)
|
||||
{
|
||||
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
|
||||
return NULL;
|
||||
}
|
||||
#endif /* CONFIG_DVB_TDA10048 */
|
||||
|
||||
#endif /* TDA10048_H */
|
||||
Loading…
Reference in New Issue
Block a user