radio-timb: Add open function which finds tuner and DSP via I2C
PATCH 2/2 radio-timb: Add open function which finds tuner and DSP via I2C
This patch uses the platform data and finds a tuner and DSP. This is done when the user calls open. Not during probe, to allow shorter bootup time of the system.
This piece of code was actually missing earlier, many of the functions were not useful without DSP and tuner.
---
drivers/media/radio/radio-timb.c +33 -0
@@ -141,9 +141,42 @@ static const struct v4l2_ioctl_ops timbradio_ioctl_ops = { .vidioc_s_ctrl = timbradio_vidioc_s_ctrl }; +static int timbradio_fops_open (struct file *file) +{ +struct timbradio *tr =video_drvdata (file); +struct i2c_adapter *adapt; + +/* find the I2C bus */ + adapt =i2c_get_adapter (tr->pdata.i2c_adapter); +if (!adapt) { + printk(KERN_ERR DRIVER_NAME": No I2C bus\n"); +return -ENODEV ; + } + +/* now find the tuner and dsp */ +if (!tr->sd_dsp) + tr->sd_dsp =v4l2_i2c_new_subdev_board (&tr->v4l2_dev, adapt, + tr->pdata.dsp,NULL ); + +if (!tr->sd_tuner) + tr->sd_tuner =v4l2_i2c_new_subdev_board (&tr->v4l2_dev, adapt, + tr->pdata.tuner,NULL ); + +i2c_put_adapter (adapt); + +if (!tr->sd_tuner || !tr->sd_dsp) { + printk(KERN_ERR DRIVER_NAME + ": Failed to get tuner or DSP\n"); +return -ENODEV ; + } + +return 0 ; +} +static const struct v4l2_file_operations timbradio_fops = { .owner =THIS_MODULE , .unlocked_ioctl = video_ioctl2, + .open = timbradio_fops_open, };static int __devinit timbradio_probe (struct platform_device *pdev)
Em 10-06-2011 11:48, Richard Röjfors escreveu:
Quoted 28 lines
This patch uses the platform data and finds a tuner and DSP. This is done when the user calls open. Not during probe, to allow shorter bootup time of the system.
This piece of code was actually missing earlier, many of the functions were not useful without DSP and tuner.Signed-off-by Richard Röjfors <[email protected]>---
drivers/media/radio/radio-timb.c +12
-0@@ -141,9 +141,42 @@ static const struct v4l2_ioctl_ops timbradio_ioctl_ops = { .vidioc_s_ctrl = timbradio_vidioc_s_ctrl }; +static int timbradio_fops_open (struct file *file) +{ +struct timbradio *tr =video_drvdata (file); +struct i2c_adapter *adapt; + +/* find the I2C bus */ + adapt =i2c_get_adapter (tr->pdata.i2c_adapter); +if (!adapt) { + printk(KERN_ERR DRIVER_NAME": No I2C bus\n"); +return -ENODEV ; + } +
drivers/media/radio/radio-timb.c static const struct v4l2_ioctl_ops timbradio_ioctl_ops = { · line 165
Quoted 10 lines
drivers/media/radio/radio-timb.c +10
-0+/* now find the tuner and dsp */ +if (!tr->sd_dsp) + tr->sd_dsp =v4l2_i2c_new_subdev_board (&tr->v4l2_dev, adapt, + tr->pdata.dsp,NULL ); + +if (!tr->sd_tuner) + tr->sd_tuner =v4l2_i2c_new_subdev_board (&tr->v4l2_dev, adapt, + tr->pdata.tuner,NULL ); + +i2c_put_adapter (adapt);
Hmm... it doesn't look right to me to do that for every device open. You should probably do it at device probe, and move i2c_put_adapter to device removal.
Quoted 22 lines
drivers/media/radio/radio-timb.c +11
-1+ +if (!tr->sd_tuner || !tr->sd_dsp) { + printk(KERN_ERR DRIVER_NAME + ": Failed to get tuner or DSP\n"); +return -ENODEV ; + } + +return 0 ; +} +static const struct v4l2_file_operations timbradio_fops = { .owner =THIS_MODULE , .unlocked_ioctl = video_ioctl2, + .open = timbradio_fops_open, };static int __devinit timbradio_probe (struct platform_device *pdev) --To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected]
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