diff options
Diffstat (limited to 'drivers/media/video/cx88/cx88-i2c.c')
| -rw-r--r-- | drivers/media/video/cx88/cx88-i2c.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/media/video/cx88/cx88-i2c.c b/drivers/media/video/cx88/cx88-i2c.c index 7bea34714861..27b5dbb2ca1a 100644 --- a/drivers/media/video/cx88/cx88-i2c.c +++ b/drivers/media/video/cx88/cx88-i2c.c @@ -7,6 +7,9 @@ (c) 2002 Yurij Sysoev <yurij@naturesoft.net> (c) 1999-2003 Gerd Knorr <kraxel@bytesex.org> + (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org> + - Multituner support and i2c address binding + 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 @@ -40,6 +43,11 @@ static unsigned int i2c_scan = 0; module_param(i2c_scan, int, 0444); MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time"); +static unsigned int i2c_udelay = 5; +module_param(i2c_udelay, int, 0644); +MODULE_PARM_DESC(i2c_udelay,"i2c delay at insmod time, in usecs " + "(should be 5 or higher). Lower value means higher bus speed."); + #define dprintk(level,fmt, arg...) if (i2c_debug >= level) \ printk(KERN_DEBUG "%s: " fmt, core->name , ## arg) @@ -198,6 +206,11 @@ static void do_i2c_scan(char *name, struct i2c_client *c) /* init + register i2c algo-bit adapter */ int cx88_i2c_init(struct cx88_core *core, struct pci_dev *pci) { + /* Prevents usage of invalid delay values */ + if (i2c_udelay<5) + i2c_udelay=5; + cx8800_i2c_algo_template.udelay=i2c_udelay; + memcpy(&core->i2c_adap, &cx8800_i2c_adap_template, sizeof(core->i2c_adap)); memcpy(&core->i2c_algo, &cx8800_i2c_algo_template, |