linux_dsm_epyc7002/drivers/media/dvb-frontends/tda10071.h

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/*
* NXP TDA10071 + Conexant CX24118A DVB-S/S2 demodulator + tuner driver
*
* Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef TDA10071_H
#define TDA10071_H
#include <linux/kconfig.h>
#include <linux/dvb/frontend.h>
struct tda10071_config {
/* Demodulator I2C address.
* Default: none, must set
* Values: 0x55,
*/
u8 demod_i2c_addr;
/* Tuner I2C address.
* Default: none, must set
* Values: 0x14, 0x54, ...
*/
u8 tuner_i2c_addr;
/* Max bytes I2C provider can write at once.
* Note: Buffer is taken from the stack currently!
* Default: none, must set
* Values:
*/
u16 i2c_wr_max;
/* TS output mode.
* Default: TDA10071_TS_SERIAL
* Values:
*/
#define TDA10071_TS_SERIAL 0
#define TDA10071_TS_PARALLEL 1
u8 ts_mode;
/* Input spectrum inversion.
* Default: 0
* Values: 0, 1
*/
bool spec_inv;
/* Xtal frequency Hz
* Default: none, must set
* Values:
*/
u32 xtal;
/* PLL multiplier.
* Default: none, must set
* Values:
*/
u8 pll_multiplier;
};
[media] Add and use IS_REACHABLE macro In the media drivers, the v4l2 core knows about all submodules and calls into them from a common function. However this cannot work if the modules that get called are loadable and the core is built-in. In that case we get drivers/built-in.o: In function `set_type': drivers/media/v4l2-core/tuner-core.c:301: undefined reference to `tea5767_attach' drivers/media/v4l2-core/tuner-core.c:307: undefined reference to `tea5761_attach' drivers/media/v4l2-core/tuner-core.c:349: undefined reference to `tda9887_attach' drivers/media/v4l2-core/tuner-core.c:405: undefined reference to `xc4000_attach' This was working previously, until the IS_ENABLED() macro was used to replace the construct like #if defined(CONFIG_DVB_CX24110) || (defined(CONFIG_DVB_CX24110_MODULE) && defined(MODULE)) with the difference that the new code no longer checks whether it is being built as a loadable module itself. To fix this, this new patch adds an 'IS_REACHABLE' macro, which evaluates true in exactly the condition that was used previously. The downside of this is that this trades an obvious link error for a more subtle runtime failure, but it is clear that the change that introduced the link error was unintentional and it seems better to revert it for now. Also, a similar change was originally created by Trent Piepho and then reverted by teh change to the IS_ENABLED macro. Ideally Kconfig would be used to avoid the case of a broken dependency, or the code restructured in a way to turn around the dependency, but either way would require much larger changes here. Fixes: 7b34be71db53 ("[media] use IS_ENABLED() macro") See-also: c5dec9fb248e ("V4L/DVB (4751): Fix DBV_FE_CUSTOMISE for card drivers compiled into kernel") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-02-19 00:12:42 +07:00
#if IS_REACHABLE(CONFIG_DVB_TDA10071)
extern struct dvb_frontend *tda10071_attach(
const struct tda10071_config *config, struct i2c_adapter *i2c);
#else
static inline struct dvb_frontend *tda10071_attach(
const struct tda10071_config *config, struct i2c_adapter *i2c)
{
dev_warn(&i2c->dev, "%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif
#endif /* TDA10071_H */