V4L/DVB (13374): AltoBeam ATBM8830 GB20600-2006(DMB-TH) demodulator

Adds support for Maxim MAX2165 silicon tuner.

It was tested on Mygica X8558Pro, which has MAX2165, ATBM8830 and CX23885.
Signed-off-by: David T. L. Wong <davidtlwong@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/Kconfig

@@ -564,6 +564,13 @@ config DVB_LGS8GXX
 	help
 	  A DMB-TH tuner module. Say Y when you want to support this frontend.
 
+config DVB_ATBM8830
+	tristate "AltoBeam ATBM8830/8831 DMB-TH demodulator"
+	depends on DVB_CORE && I2C
+	default m if DVB_FE_CUSTOMISE
+	help
+	  A DMB-TH tuner module. Say Y when you want to support this frontend.
+
 comment "Tools to develop new frontends"
 
 config DVB_DUMMY_FE

drivers/media/dvb/frontends/Makefile

@@ -64,6 +64,7 @@ obj-$(CONFIG_DVB_TUNER_CX24113) += cx24113.o
 obj-$(CONFIG_DVB_S5H1411) += s5h1411.o
 obj-$(CONFIG_DVB_LGS8GL5) += lgs8gl5.o
 obj-$(CONFIG_DVB_LGS8GXX) += lgs8gxx.o
+obj-$(CONFIG_DVB_ATBM8830) += atbm8830.o
 obj-$(CONFIG_DVB_DUMMY_FE) += dvb_dummy_fe.o
 obj-$(CONFIG_DVB_AF9013) += af9013.o
 obj-$(CONFIG_DVB_CX24116) += cx24116.o

drivers/media/dvb/frontends/atbm8830.h

+/*
+ *    Support for AltoBeam GB20600 (a.k.a DMB-TH) demodulator
+ *    ATBM8830, ATBM8831
+ *
+ *    Copyright (C) 2009 David T.L. Wong <davidtlwong@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 __ATBM8830_H__
+#define __ATBM8830_H__
+
+#include <linux/dvb/frontend.h>
+#include <linux/i2c.h>
+
+#define ATBM8830_PROD_8830 0
+#define ATBM8830_PROD_8831 1
+
+struct atbm8830_config {
+
+	/* product type */
+	u8 prod;
+
+	/* the demodulator's i2c address */
+	u8 demod_address;
+
+	/* parallel or serial transport stream */
+	u8 serial_ts;
+
+	/* transport stream clock output only when receving valid stream */
+	u8 ts_clk_gated;
+
+	/* Decoder sample TS data at rising edge of clock */
+	u8 ts_sampling_edge;
+
+	/* Oscillator clock frequency */
+	u32 osc_clk_freq; /* in kHz */
+
+	/* IF frequency */
+	u32 if_freq; /* in kHz */
+
+	/* Swap I/Q for zero IF */
+	u8 zif_swap_iq;
+
+	/* Tuner AGC settings */
+	u8 agc_min;
+	u8 agc_max;
+	u8 agc_hold_loop;
+};
+
+#if defined(CONFIG_DVB_ATBM8830) || \
+	(defined(CONFIG_DVB_ATBM8830_MODULE) && defined(MODULE))
+extern struct dvb_frontend *atbm8830_attach(const struct atbm8830_config *config,
+		struct i2c_adapter *i2c);
+#else
+static inline
+struct dvb_frontend *atbm8830_attach(const struct atbm8830_config *config,
+		struct i2c_adapter *i2c) {
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif /* CONFIG_DVB_ATBM8830 */
+
+#endif /* __ATBM8830_H__ */

drivers/media/dvb/frontends/atbm8830_priv.h

+/*
+ *    Support for AltoBeam GB20600 (a.k.a DMB-TH) demodulator
+ *    ATBM8830, ATBM8831
+ *
+ *    Copyright (C) 2009 David T.L. Wong <davidtlwong@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 __ATBM8830_PRIV_H
+#define __ATBM8830_PRIV_H
+
+struct atbm_state {
+	struct i2c_adapter *i2c;
+	/* configuration settings */
+	const struct atbm8830_config *config;
+	struct dvb_frontend frontend;
+};
+
+#define REG_CHIP_ID	0x0000
+#define REG_TUNER_BASEBAND	0x0001
+#define REG_DEMOD_RUN	0x0004
+#define REG_DSP_RESET	0x0005
+#define REG_RAM_RESET	0x0006
+#define REG_ADC_RESET	0x0007
+#define REG_TSPORT_RESET	0x0008
+#define REG_BLKERR_POL	0x000C
+#define REG_I2C_GATE	0x0103
+#define REG_TS_SAMPLE_EDGE	0x0301
+#define REG_TS_PKT_LEN_204	0x0302
+#define REG_TS_PKT_LEN_AUTO	0x0303
+#define REG_TS_SERIAL	0x0305
+#define REG_TS_CLK_FREERUN	0x0306
+#define REG_TS_VALID_MODE	0x0307
+#define REG_TS_CLK_MODE	0x030B /* 1 for serial, 0 for parallel */
+
+#define REG_TS_ERRBIT_USE	0x030C
+#define REG_LOCK_STATUS	0x030D
+#define REG_ADC_CONFIG	0x0602
+#define REG_CARRIER_OFFSET	0x0827 /* 0x0827-0x0829 little endian */
+#define REG_DETECTED_PN_MODE	0x082D
+#define REG_READ_LATCH	0x084D
+#define REG_IF_FREQ	0x0A00 /* 0x0A00-0x0A02 little endian */
+#define REG_OSC_CLK	0x0A03 /* 0x0A03-0x0A05 little endian */
+#define REG_BYPASS_CCI	0x0A06
+#define REG_ANALOG_LUMA_DETECTED	0x0A25
+#define REG_ANALOG_AUDIO_DETECTED	0x0A26
+#define REG_ANALOG_CHROMA_DETECTED	0x0A39
+#define REG_FRAME_ERR_CNT	0x0B04
+#define REG_USE_EXT_ADC	0x0C00
+#define REG_SWAP_I_Q	0x0C01
+#define REG_TPS_MANUAL	0x0D01
+#define REG_TPS_CONFIG	0x0D02
+#define REG_BYPASS_DEINTERLEAVER	0x0E00
+#define REG_AGC_TARGET	0x1003 /* 0x1003-0x1005 little endian */
+#define REG_AGC_MIN	0x1020
+#define REG_AGC_MAX	0x1023
+#define REG_AGC_LOCK	0x1027
+#define REG_AGC_PWM_VAL	0x1028 /* 0x1028-0x1029 little endian */
+#define REG_AGC_HOLD_LOOP	0x1031
+
+#endif
+