OpenCloudOS-Kernel/drivers/media/dvb-frontends/stb6100.h

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/*
STB6100 Silicon Tuner
Copyright (C) Manu Abraham (abraham.manu@gmail.com)
Copyright (C) ST Microelectronics
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 __STB_6100_REG_H
#define __STB_6100_REG_H
#include <linux/dvb/frontend.h>
#include <media/dvb_frontend.h>
#define STB6100_LD 0x00
#define STB6100_LD_LOCK (1 << 0)
#define STB6100_VCO 0x01
#define STB6100_VCO_OSCH (0x01 << 7)
#define STB6100_VCO_OSCH_SHIFT 7
#define STB6100_VCO_OCK (0x03 << 5)
#define STB6100_VCO_OCK_SHIFT 5
#define STB6100_VCO_ODIV (0x01 << 4)
#define STB6100_VCO_ODIV_SHIFT 4
#define STB6100_VCO_OSM (0x0f << 0)
#define STB6100_NI 0x02
#define STB6100_NF_LSB 0x03
#define STB6100_K 0x04
#define STB6100_K_PSD2 (0x01 << 2)
#define STB6100_K_PSD2_SHIFT 2
#define STB6100_K_NF_MSB (0x03 << 0)
#define STB6100_G 0x05
#define STB6100_G_G (0x0f << 0)
#define STB6100_G_GCT (0x07 << 5)
#define STB6100_F 0x06
#define STB6100_F_F (0x1f << 0)
#define STB6100_DLB 0x07
#define STB6100_TEST1 0x08
#define STB6100_FCCK 0x09
#define STB6100_FCCK_FCCK (0x01 << 6)
#define STB6100_LPEN 0x0a
#define STB6100_LPEN_LPEN (0x01 << 4)
#define STB6100_LPEN_SYNP (0x01 << 5)
#define STB6100_LPEN_OSCP (0x01 << 6)
#define STB6100_LPEN_BEN (0x01 << 7)
#define STB6100_TEST3 0x0b
#define STB6100_NUMREGS 0x0c
#define INRANGE(val, x, y) (((x <= val) && (val <= y)) || \
((y <= val) && (val <= x)) ? 1 : 0)
#define CHKRANGE(val, x, y) (((val >= x) && (val < y)) ? 1 : 0)
struct stb6100_config {
u8 tuner_address;
u32 refclock;
};
struct stb6100_state {
struct i2c_adapter *i2c;
const struct stb6100_config *config;
struct dvb_tuner_ops ops;
struct dvb_frontend *frontend;
u32 frequency;
u32 srate;
u32 bandwidth;
u32 reference;
};
[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 01:12:42 +08:00
#if IS_REACHABLE(CONFIG_DVB_STB6100)
extern struct dvb_frontend *stb6100_attach(struct dvb_frontend *fe,
const struct stb6100_config *config,
struct i2c_adapter *i2c);
#else
static inline struct dvb_frontend *stb6100_attach(struct dvb_frontend *fe,
const struct stb6100_config *config,
struct i2c_adapter *i2c)
{
printk(KERN_WARNING "%s: Driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif //CONFIG_DVB_STB6100
#endif