6b142b3c81
If the tuner is not actually behind an i2c gate, using the i2c gate control function can wedge the i2c bus. Provide the ability to control on a per-board basis whether it should be used. Problem was noticed on the HVR-900 R2, where it resulted in the first tuning attempt succeeding, and then all subsequent attempts to access the xc3028 being treated as failures (including the call to sleep the tuner). Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/*
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* drxd.h: DRXD DVB-T demodulator driver
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*
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* Copyright (C) 2005-2007 Micronas
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 only, as published by the Free Software Foundation.
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*
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*
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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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*
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*
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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., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
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*/
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#ifndef _DRXD_H_
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#define _DRXD_H_
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#include <linux/types.h>
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#include <linux/i2c.h>
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struct drxd_config
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{
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u8 index;
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u8 pll_address;
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u8 pll_type;
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#define DRXD_PLL_NONE 0
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#define DRXD_PLL_DTT7520X 1
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#define DRXD_PLL_MT3X0823 2
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u32 clock;
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u8 insert_rs_byte;
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u8 demod_address;
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u8 demoda_address;
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u8 demod_revision;
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/* If the tuner is not behind an i2c gate, be sure to flip this bit
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or else the i2c bus could get wedged */
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u8 disable_i2c_gate_ctrl;
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u32 IF;
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int (*pll_set) (void *priv, void *priv_params,
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u8 pll_addr, u8 demoda_addr, s32 *off);
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s16 (*osc_deviation) (void *priv, s16 dev, int flag);
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};
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extern
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struct dvb_frontend *drxd_attach(const struct drxd_config *config,
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void *priv, struct i2c_adapter *i2c,
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struct device *dev);
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extern int drxd_config_i2c(struct dvb_frontend *, int);
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#endif
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