Hi Bastian, thank you, that'll be great. I have a clock oscillator soldered on my board feeding the CLKIN of the MT9T001, so I have no issue with I2C not working. The sensor responds and does i2c writes and reads just fine. Just the v4l2_subdev isn't created when I load the omap3-isp module, so I guess I have messed up some configuration somewhere. Best wishes, Stefan. On Wed, Dec 1, 2010 at 12:50 PM, Bastian Hecht <hechtb@xxxxxxxxxxxxxx> wrote: > Hello Stefan, > > I can send you my code tomorrow. Meanwhile a short hint, that may help > you: The mt9p031 needs a not only the i2c clock to work but also the > cam_clk signals. > > Right now this is hacked into the isp-driver in my setup but I want to > do it like the nokia code (pass a clock-setup function defined in the > board-code to the sensor driver, so that the driver can setup the > clock itself before i2c-checking is done). > > best greetings, > > Bastian > > > 2010/12/1 Stefan Steuerwald <salsasepp@xxxxxxxxxxxxxx>: >> Hi, >> >> may I please have your help with the following: >> >> I have adapted the MT9T001 driver from Laurent's tree at >> Âhttp://git.linuxtv.org/pinchartl/media.git?a=shortlog;h=refs/heads/media-mt9t001 >> to the current state of the media-framework in this kernel tree (devel branch): >> Âhttp://meego.gitorious.org/maemo-multimedia/omap3isp-rx51 >> to run this on a gumstix overo (OMAP3) board. >> (Duplicating Bastian's recent work, I know, but he's on hoilday...). >> >> The mt9t001 driver module loads and probes ok, however, the creation >> of a v4l2 subdev >> for the sensor fails (i2c says -EBUSY, see below). It seems to choke >> on the fact that the >> sensor's I2C address of 0x5D is already in use after loading the >> mt9t001 module, >> which I think is fine: >> >> root@overo:~# modprobe iommu2 >> omap-iommu omap-iommu.0: isp registered >> >> root@overo:~# modprobe omap3-isp >> Linux media interface: v0.10 >> Linux video capture interface: v2.00 >> omap3isp omap3isp: Revision 2.0 found >> omap-iommu omap-iommu.0: isp: version 1.1 >> isp_register_subdev_group: i2c_adapter_id 3, type mt9t001, i2c_addr 93 >> mt9t001 3-005d: mt9t001_probe() >> mt9t001 3-005d: mt9t001_video_probe() >> mt9t001 3-005d: MT9T001 detected >> v4l2_i2c_new_subdev_board: info->addr=0x5d, probe_addrs=(null) >> i2c i2c-3: Failed to register i2c client mt9t001 at 0x5d (-16) >> isp_register_subdev_group: Unable to register subdev mt9t001 >> >> This creates these subdevs: >> root@overo:~# cat /sys/class/video4linux/v4l-subdev*/name >> OMAP3 ISP CCP2 >> OMAP3 ISP CSI2a >> OMAP3 ISP CCDC >> OMAP3 ISP preview >> OMAP3 ISP resizer >> OMAP3 ISP AEWB >> OMAP3 ISP AF >> OMAP3 ISP histogram >> which has the sensor missing, I believe. >> >> I am using platform_device_register() in my >> arch/arm/mach-omap2/board-overo.c file >> to register my iof_isp_platform_data as follows: >> >> static struct i2c_board_info overo_i2c_boardinfo_3[] = { >>    Â{ >>        ÂI2C_BOARD_INFO("mt9t001", 0x5d), >>    Â}, >> }; >> >> static struct v4l2_subdev_i2c_board_info iof_camera_mt9t001[] = { >>    Â{ >>        Â.board_info = &overo_i2c_boardinfo_3[0], >>        Â.i2c_adapter_id = 3, >>    Â}, >>    Â{ NULL, 0, }, >> }; >> >> static struct isp_v4l2_subdevs_group iof_camera_subdevs[] = { >>    Â{ >>        Â.subdevs = iof_camera_mt9t001, >>        Â.interface = ISP_INTERFACE_PARALLEL, >>        Â.bus = { .parallel = { >>            Â.data_lane_shift    Â= 0, >>            Â.clk_pol        Â= 1, >>            Â.bridge         = ISPCTRL_PAR_BRIDGE_DISABLE, >>        Â} }, >>    Â}, >>    Â{ NULL, 0, }, >> }; >> >> static struct isp_platform_data iof_isp_platform_data = { >>    Â.subdevs = iof_camera_subdevs, >> }; >> >> I have followed the recent conversation between Bastian, Laurent and >> others on the >> similar Âsubject of a mt9p031 driver used with omap3-isp. >> Any pointers on what to check are greatly appreciated. >> >> Thank you, >> ÂStefan. >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-media" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at Âhttp://vger.kernel.org/majordomo-info.html >> > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
