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1cf79db28e
The root i2c adapter lock is then no longer held by the i2c mux during accesses behind the i2c gate, and such accesses need to take that lock just like any other ordinary i2c accesses do. So, declare the i2c gate mux-locked, and zap the regmap overrides that makes the i2c accesses unlocked and use plain old regmap accesses. This also removes the need for the regmap wrappers used by rtl2832_sdr, so deconvolute the code further and provide the regmap handle directly instead of the wrapper functions. Tested-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/*
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* Realtek RTL2832U SDR driver
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*
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* Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
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*
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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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*
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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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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* GNU Radio plugin "gr-kernel" for device usage will be on:
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* http://git.linuxtv.org/anttip/gr-kernel.git
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*
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*/
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#ifndef RTL2832_SDR_H
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#define RTL2832_SDR_H
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#include <linux/i2c.h>
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#include <media/v4l2-subdev.h>
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#include "dvb_frontend.h"
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/**
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* struct rtl2832_sdr_platform_data - Platform data for the rtl2832_sdr driver
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* @clk: Clock frequency (4000000, 16000000, 25000000, 28800000).
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* @tuner: Used tuner model.
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* @i2c_client: rtl2832 demod driver I2C client.
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* @bulk_read: rtl2832 driver private I/O interface.
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* @bulk_write: rtl2832 driver private I/O interface.
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* @update_bits: rtl2832 driver private I/O interface.
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* @dvb_frontend: rtl2832 DVB frontend.
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* @v4l2_subdev: Tuner v4l2 controls.
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* @dvb_usb_device: DVB USB interface for USB streaming.
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*/
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struct rtl2832_sdr_platform_data {
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u32 clk;
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/*
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* XXX: This list must be kept sync with dvb_usb_rtl28xxu USB IF driver.
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*/
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#define RTL2832_SDR_TUNER_FC2580 0x21
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#define RTL2832_SDR_TUNER_TUA9001 0x24
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#define RTL2832_SDR_TUNER_FC0012 0x26
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#define RTL2832_SDR_TUNER_E4000 0x27
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#define RTL2832_SDR_TUNER_FC0013 0x29
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#define RTL2832_SDR_TUNER_R820T 0x2a
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#define RTL2832_SDR_TUNER_R828D 0x2b
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u8 tuner;
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struct regmap *regmap;
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struct dvb_frontend *dvb_frontend;
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struct v4l2_subdev *v4l2_subdev;
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struct dvb_usb_device *dvb_usb_device;
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};
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#endif /* RTL2832_SDR_H */
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