Hi Guennadi Thanks a lot for your attention. I think I cannot apply the patches. My Linux sources, downloaded from www.at91.com, does not have the V4l2-async.h header and, I suppose, many others headers. The MT9P031 sources have been modified and it is in a different tree. Can you tell me where I can download an already patched Kernel 3.6.9 which I can add theses functionality to the driver I am using? By the way, our MT9P031 sensor board has 10-bit format. I have fixed already. Regards MArcio On 18/04/13 19:44, "Guennadi Liakhovetski" <g.liakhovetski@xxxxxx> wrote: >Hi Marcio > >On Thu, 18 Apr 2013, Marcio Campos de Lima wrote: > >> >Hi >> > >> >I am porting the MT9P031 sensor device driver for a custom designed >>board >> >based at the AT91SAM9M45-EK development board and Linux 3.6.9. >> >The driver detects the sensor but does not create /dev/video1. >> > >> >Can anybody help me? > >Congratulations, today is your lucky day :-) I've just posted a >patch-series > >http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/635 >04 > >to do exactly what you need. Well, 99% of what you need :) With at91 >you're using the atmel-isi soc-camera camera host driver. Shich isn't >extended by this patch series to support the asynchronous subdevice >registration, but it's rather easy to add, please, have a look at patch >#15 for an example, based on the mx3_camera driver. Then there's a slight >problem of mt9p031 only exporting 12-bit formats. You can "fix" it >internally by substituting 8-bit formats (you are using 8 bits, right?) >instead. We'll need a proper solution at some point. The last patch in >the >series shows how to add support for the mt9p031 sensor to a board. > >Anyway, give it a try, feel free to ask. > >Thanks >Guennadi > >> >Thanks >> >Marcio >> >> This is the probe code fo the driver if this can help: >> >> /* >> >>------------------------------------------------------------------------- >>-- >> -- >> * Driver initialization and probing >> */ >> >> static int mt9p031_probe(struct i2c_client *client, >> const struct i2c_device_id *did) >> { >> struct mt9p031_platform_data *pdata = client->dev.platform_data; >> struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); >> struct mt9p031 *mt9p031; >> unsigned int i; >> int ret; >> >> if (pdata == NULL) { >> dev_err(&client->dev, "No platform data\n"); >> return -EINVAL; >> } >> >> if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { >> dev_warn(&client->dev, >> "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); >> return -EIO; >> } >> >> mt9p031 = kzalloc(sizeof(*mt9p031), GFP_KERNEL); >> if (mt9p031 == NULL) >> return -ENOMEM; >> >> mt9p031->pdata = pdata; >> mt9p031->output_control = MT9P031_OUTPUT_CONTROL_DEF; >> mt9p031->mode2 = MT9P031_READ_MODE_2_ROW_BLC; >> >> v4l2_ctrl_handler_init(&mt9p031->ctrls, ARRAY_SIZE(mt9p031_ctrls) + 4); >> >> v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, >> V4L2_CID_EXPOSURE, MT9P031_SHUTTER_WIDTH_MIN, >> MT9P031_SHUTTER_WIDTH_MAX, 1, >> MT9P031_SHUTTER_WIDTH_DEF); >> v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, >> V4L2_CID_GAIN, MT9P031_GLOBAL_GAIN_MIN, >> MT9P031_GLOBAL_GAIN_MAX, 1, MT9P031_GLOBAL_GAIN_DEF); >> v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, >> V4L2_CID_HFLIP, 0, 1, 1, 0); >> v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, >> V4L2_CID_VFLIP, 0, 1, 1, 0); >> >> for (i = 0; i < ARRAY_SIZE(mt9p031_ctrls); ++i) >> v4l2_ctrl_new_custom(&mt9p031->ctrls, &mt9p031_ctrls[i], NULL); >> >> mt9p031->subdev.ctrl_handler = &mt9p031->ctrls; >> >> if (mt9p031->ctrls.error) >> printk(KERN_INFO "%s: control initialization error %d\n", >> __func__, mt9p031->ctrls.error); >> >> mutex_init(&mt9p031->power_lock); >> v4l2_i2c_subdev_init(&mt9p031->subdev, client, &mt9p031_subdev_ops); >> mt9p031->subdev.internal_ops = &mt9p031_subdev_internal_ops; >> >> mt9p031->pad.flags = MEDIA_PAD_FL_SOURCE; >> ret = media_entity_init(&mt9p031->subdev.entity, 1, &mt9p031->pad, 0); >> if (ret < 0) >> goto done; >> >> mt9p031->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; >> >> mt9p031->crop.width = MT9P031_WINDOW_WIDTH_DEF; >> mt9p031->crop.height = MT9P031_WINDOW_HEIGHT_DEF; >> mt9p031->crop.left = MT9P031_COLUMN_START_DEF; >> mt9p031->crop.top = MT9P031_ROW_START_DEF; >> >> if (mt9p031->pdata->version == MT9P031_MONOCHROME_VERSION) >> mt9p031->format.code = V4L2_MBUS_FMT_Y12_1X12; >> else >> mt9p031->format.code = V4L2_MBUS_FMT_SGRBG12_1X12; >> >> mt9p031->format.width = MT9P031_WINDOW_WIDTH_DEF; >> mt9p031->format.height = MT9P031_WINDOW_HEIGHT_DEF; >> mt9p031->format.field = V4L2_FIELD_NONE; >> mt9p031->format.colorspace = V4L2_COLORSPACE_SRGB; >> isi_set_clk(); >> mt9p031->pdata->ext_freq=21000000; >> mt9p031->pdata->target_freq=48000000; >> ret = mt9p031_pll_get_divs(mt9p031); >> >> done: >> if (ret < 0) { >> v4l2_ctrl_handler_free(&mt9p031->ctrls); >> media_entity_cleanup(&mt9p031->subdev.entity); >> kfree(mt9p031); >> } >> >> return ret; >> } >> >> >> >> -- >> 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 >> > >--- >Guennadi Liakhovetski, Ph.D. >Freelance Open-Source Software Developer >http://www.open-technology.de/ -- 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
