Hi,
good patch. This saves quite some code in the I2C part of the driver...
Acked-by: Tobias Lorenz <tobias.lor...@gmx.net>
Bye,
Toby
Am Donnerstag 03 Dezember 2009 13:57:22 schrieb Joonyoung Shim:
> The read and poll file operations of the si470x usb driver can be used
> also equally on the si470x i2c driver, so they go to the common file.
>
> Signed-off-by: Joonyoung Shim <jy0922.s...@samsung.com>
> ---
> drivers/media/radio/si470x/radio-si470x-common.c | 98
> ++++++++++++++++++++++
> drivers/media/radio/si470x/radio-si470x-i2c.c | 15 +---
> drivers/media/radio/si470x/radio-si470x-usb.c | 97
> +---------------------
> drivers/media/radio/si470x/radio-si470x.h | 3 +-
> 4 files changed, 104 insertions(+), 109 deletions(-)
>
> diff --git a/drivers/media/radio/si470x/radio-si470x-common.c
> b/drivers/media/radio/si470x/radio-si470x-common.c
> index 7296cf4..f4645d4 100644
> --- a/drivers/media/radio/si470x/radio-si470x-common.c
> +++ b/drivers/media/radio/si470x/radio-si470x-common.c
> @@ -426,6 +426,104 @@ int si470x_rds_on(struct si470x_device *radio)
>
>
> /**************************************************************************
> + * File Operations Interface
> + **************************************************************************/
> +
> +/*
> + * si470x_fops_read - read RDS data
> + */
> +static ssize_t si470x_fops_read(struct file *file, char __user *buf,
> + size_t count, loff_t *ppos)
> +{
> + struct si470x_device *radio = video_drvdata(file);
> + int retval = 0;
> + unsigned int block_count = 0;
> +
> + /* switch on rds reception */
> + if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
> + si470x_rds_on(radio);
> +
> + /* block if no new data available */
> + while (radio->wr_index == radio->rd_index) {
> + if (file->f_flags & O_NONBLOCK) {
> + retval = -EWOULDBLOCK;
> + goto done;
> + }
> + if (wait_event_interruptible(radio->read_queue,
> + radio->wr_index != radio->rd_index) < 0) {
> + retval = -EINTR;
> + goto done;
> + }
> + }
> +
> + /* calculate block count from byte count */
> + count /= 3;
> +
> + /* copy RDS block out of internal buffer and to user buffer */
> + mutex_lock(&radio->lock);
> + while (block_count < count) {
> + if (radio->rd_index == radio->wr_index)
> + break;
> +
> + /* always transfer rds complete blocks */
> + if (copy_to_user(buf, &radio->buffer[radio->rd_index], 3))
> + /* retval = -EFAULT; */
> + break;
> +
> + /* increment and wrap read pointer */
> + radio->rd_index += 3;
> + if (radio->rd_index >= radio->buf_size)
> + radio->rd_index = 0;
> +
> + /* increment counters */
> + block_count++;
> + buf += 3;
> + retval += 3;
> + }
> + mutex_unlock(&radio->lock);
> +
> +done:
> + return retval;
> +}
> +
> +
> +/*
> + * si470x_fops_poll - poll RDS data
> + */
> +static unsigned int si470x_fops_poll(struct file *file,
> + struct poll_table_struct *pts)
> +{
> + struct si470x_device *radio = video_drvdata(file);
> + int retval = 0;
> +
> + /* switch on rds reception */
> + if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
> + si470x_rds_on(radio);
> +
> + poll_wait(file, &radio->read_queue, pts);
> +
> + if (radio->rd_index != radio->wr_index)
> + retval = POLLIN | POLLRDNORM;
> +
> + return retval;
> +}
> +
> +
> +/*
> + * si470x_fops - file operations interface
> + */
> +static const struct v4l2_file_operations si470x_fops = {
> + .owner = THIS_MODULE,
> + .read = si470x_fops_read,
> + .poll = si470x_fops_poll,
> + .ioctl = video_ioctl2,
> + .open = si470x_fops_open,
> + .release = si470x_fops_release,
> +};
> +
> +
> +
> +/**************************************************************************
> * Video4Linux Interface
> **************************************************************************/
>
> diff --git a/drivers/media/radio/si470x/radio-si470x-i2c.c
> b/drivers/media/radio/si470x/radio-si470x-i2c.c
> index 2d53b6a..4816a6d 100644
> --- a/drivers/media/radio/si470x/radio-si470x-i2c.c
> +++ b/drivers/media/radio/si470x/radio-si470x-i2c.c
> @@ -173,7 +173,7 @@ int si470x_disconnect_check(struct si470x_device *radio)
> /*
> * si470x_fops_open - file open
> */
> -static int si470x_fops_open(struct file *file)
> +int si470x_fops_open(struct file *file)
> {
> struct si470x_device *radio = video_drvdata(file);
> int retval = 0;
> @@ -194,7 +194,7 @@ static int si470x_fops_open(struct file *file)
> /*
> * si470x_fops_release - file release
> */
> -static int si470x_fops_release(struct file *file)
> +int si470x_fops_release(struct file *file)
> {
> struct si470x_device *radio = video_drvdata(file);
> int retval = 0;
> @@ -215,17 +215,6 @@ static int si470x_fops_release(struct file *file)
> }
>
>
> -/*
> - * si470x_fops - file operations interface
> - */
> -const struct v4l2_file_operations si470x_fops = {
> - .owner = THIS_MODULE,
> - .ioctl = video_ioctl2,
> - .open = si470x_fops_open,
> - .release = si470x_fops_release,
> -};
> -
> -
>
> /**************************************************************************
> * Video4Linux Interface
> diff --git a/drivers/media/radio/si470x/radio-si470x-usb.c
> b/drivers/media/radio/si470x/radio-si470x-usb.c
> index f2d0e1d..a96e1b9 100644
> --- a/drivers/media/radio/si470x/radio-si470x-usb.c
> +++ b/drivers/media/radio/si470x/radio-si470x-usb.c
> @@ -509,89 +509,9 @@ resubmit:
> **************************************************************************/
>
> /*
> - * si470x_fops_read - read RDS data
> - */
> -static ssize_t si470x_fops_read(struct file *file, char __user *buf,
> - size_t count, loff_t *ppos)
> -{
> - struct si470x_device *radio = video_drvdata(file);
> - int retval = 0;
> - unsigned int block_count = 0;
> -
> - /* switch on rds reception */
> - if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
> - si470x_rds_on(radio);
> -
> - /* block if no new data available */
> - while (radio->wr_index == radio->rd_index) {
> - if (file->f_flags & O_NONBLOCK) {
> - retval = -EWOULDBLOCK;
> - goto done;
> - }
> - if (wait_event_interruptible(radio->read_queue,
> - radio->wr_index != radio->rd_index) < 0) {
> - retval = -EINTR;
> - goto done;
> - }
> - }
> -
> - /* calculate block count from byte count */
> - count /= 3;
> -
> - /* copy RDS block out of internal buffer and to user buffer */
> - mutex_lock(&radio->lock);
> - while (block_count < count) {
> - if (radio->rd_index == radio->wr_index)
> - break;
> -
> - /* always transfer rds complete blocks */
> - if (copy_to_user(buf, &radio->buffer[radio->rd_index], 3))
> - /* retval = -EFAULT; */
> - break;
> -
> - /* increment and wrap read pointer */
> - radio->rd_index += 3;
> - if (radio->rd_index >= radio->buf_size)
> - radio->rd_index = 0;
> -
> - /* increment counters */
> - block_count++;
> - buf += 3;
> - retval += 3;
> - }
> - mutex_unlock(&radio->lock);
> -
> -done:
> - return retval;
> -}
> -
> -
> -/*
> - * si470x_fops_poll - poll RDS data
> - */
> -static unsigned int si470x_fops_poll(struct file *file,
> - struct poll_table_struct *pts)
> -{
> - struct si470x_device *radio = video_drvdata(file);
> - int retval = 0;
> -
> - /* switch on rds reception */
> - if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
> - si470x_rds_on(radio);
> -
> - poll_wait(file, &radio->read_queue, pts);
> -
> - if (radio->rd_index != radio->wr_index)
> - retval = POLLIN | POLLRDNORM;
> -
> - return retval;
> -}
> -
> -
> -/*
> * si470x_fops_open - file open
> */
> -static int si470x_fops_open(struct file *file)
> +int si470x_fops_open(struct file *file)
> {
> struct si470x_device *radio = video_drvdata(file);
> int retval;
> @@ -645,7 +565,7 @@ done:
> /*
> * si470x_fops_release - file release
> */
> -static int si470x_fops_release(struct file *file)
> +int si470x_fops_release(struct file *file)
> {
> struct si470x_device *radio = video_drvdata(file);
> int retval = 0;
> @@ -688,19 +608,6 @@ done:
> }
>
>
> -/*
> - * si470x_fops - file operations interface
> - */
> -const struct v4l2_file_operations si470x_fops = {
> - .owner = THIS_MODULE,
> - .read = si470x_fops_read,
> - .poll = si470x_fops_poll,
> - .ioctl = video_ioctl2,
> - .open = si470x_fops_open,
> - .release = si470x_fops_release,
> -};
> -
> -
>
> /**************************************************************************
> * Video4Linux Interface
> diff --git a/drivers/media/radio/si470x/radio-si470x.h
> b/drivers/media/radio/si470x/radio-si470x.h
> index d0af194..f646f79 100644
> --- a/drivers/media/radio/si470x/radio-si470x.h
> +++ b/drivers/media/radio/si470x/radio-si470x.h
> @@ -212,7 +212,6 @@ struct si470x_device {
> /**************************************************************************
> * Common Functions
> **************************************************************************/
> -extern const struct v4l2_file_operations si470x_fops;
> extern struct video_device si470x_viddev_template;
> int si470x_get_register(struct si470x_device *radio, int regnr);
> int si470x_set_register(struct si470x_device *radio, int regnr);
> @@ -221,5 +220,7 @@ int si470x_set_freq(struct si470x_device *radio, unsigned
> int freq);
> int si470x_start(struct si470x_device *radio);
> int si470x_stop(struct si470x_device *radio);
> int si470x_rds_on(struct si470x_device *radio);
> +int si470x_fops_open(struct file *file);
> +int si470x_fops_release(struct file *file);
> int si470x_vidioc_querycap(struct file *file, void *priv,
> struct v4l2_capability *capability);
>
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