linux/drivers/media/dvb/frontends/cx24116.h
Antti Palosaari 107d7b181d [media] cx24116: add config option to split firmware download
It is very rare I2C adapter hardware which can provide 32kB I2C write
as one write. Add .i2c_wr_max option to set desired max packet size.
Split transaction to smaller pieces according to that option.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Cc: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-05-20 09:30:00 -03:00

59 lines
1.7 KiB
C

/*
Conexant cx24116/cx24118 - DVBS/S2 Satellite demod/tuner driver
Copyright (C) 2006 Steven Toth <stoth@linuxtv.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 CX24116_H
#define CX24116_H
#include <linux/dvb/frontend.h>
struct cx24116_config {
/* the demodulator's i2c address */
u8 demod_address;
/* Need to set device param for start_dma */
int (*set_ts_params)(struct dvb_frontend *fe, int is_punctured);
/* Need to reset device during firmware loading */
int (*reset_device)(struct dvb_frontend *fe);
/* Need to set MPEG parameters */
u8 mpg_clk_pos_pol:0x02;
/* max bytes I2C provider can write at once */
u16 i2c_wr_max;
};
#if defined(CONFIG_DVB_CX24116) || \
(defined(CONFIG_DVB_CX24116_MODULE) && defined(MODULE))
extern struct dvb_frontend *cx24116_attach(
const struct cx24116_config *config,
struct i2c_adapter *i2c);
#else
static inline struct dvb_frontend *cx24116_attach(
const struct cx24116_config *config,
struct i2c_adapter *i2c)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif
#endif /* CX24116_H */