141276b57e
Software I2C were using a very conservative value of udelay=16, meaning about 20Kbps. According with Philips I2C datasheet, the i2c should answer well for times at the order of 4.7 us. So, using udelay=5 should work for all devices. After this patch, the speed should be close to 66,67 Kbps, with the current kernel software bitbang, with 30/60 duty cycle. Anyway, added a new parameter (i2c_udelay) that would allow using conservative values, if eventually a hardware doesn't support the datasheet values. Thanks to Jean Delvare <khali@linux-fr.org> for pointing this improvement. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org> |
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| .. | ||
| bt832.c | ||
| bt832.h | ||
| bt848.h | ||
| bttv-cards.c | ||
| bttv-driver.c | ||
| bttv-gpio.c | ||
| bttv-i2c.c | ||
| bttv-if.c | ||
| bttv-input.c | ||
| bttv-risc.c | ||
| bttv-vbi.c | ||
| bttv.h | ||
| bttvp.h | ||
| Kconfig | ||
| Makefile | ||