OK, I got some code from the Gatos project. I took i2c-savage4 and edited it in accordance with what I found there, but I can't get it to work. If anyone could take a look and tell me where I'm wrong... Registers are here: http://cvs.sourceforge.net/viewcvs.py/gatos/ati.2/radeon_reg.h?rev=1.14&view=auto I use these: #define RADEON_GPIO_DVI_DDC 0x0064 #define RADEON_GPIO_VGA_DDC 0x0060 # define RADEON_GPIO_Y_0 (1 << 8) # define RADEON_GPIO_Y_1 (1 << 9) # define RADEON_GPIO_EN_0 (1 << 16) # define RADEON_GPIO_EN_1 (1 << 17) Also tried these but didn't help: #define RADEON_GPIO_MONID 0x0068 #define RADEON_GPIO_CRT2_DDC 0x006c Code is here: http://cvs.sourceforge.net/viewcvs.py/gatos/ati.2/radeon_driver.c?rev=1.17&view=auto Functions I took my code from are RADEONI2CGetBits, RADEONI2CPutBits and RADEONI2cInit. One thing I noticed is that set{scl,sda} seem to be inverted. Attached is my driver. It doesn't work. Whatever base register I try (DVI, VGA, CRT2...), both SDA and SCL lines are stuck to low (so says i2c-algo-bit with bit_test=1). So I'm obviously missing something, maybe because I never worked on this kind of hardware before. Any help appreciated. Thanks. -- Jean Delvare http://www.ensicaen.ismra.fr/~delvare/ -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: i2c-radeon.c Url: http://lists.lm-sensors.org/pipermail/lm-sensors/attachments/20040106/6e445324/attachment.c
