On Wed, 27 Jul 2011 10:53:28 -0700, Jesse Barnes <[email protected]> wrote:
> + len = snprintf(buf, sizeof (buf),
> + "freq: %d\n", dev_priv->max_delay * 50);
should probably be 'Max frequency' too?
> +
> + if (len > sizeof (buf))
> + len = sizeof (buf);
> +
> + return simple_read_from_buffer(ubuf, max, ppos, buf, len);
> +}
> +
> +static ssize_t
> +i915_max_freq_write(struct file *filp,
> + const char __user *ubuf,
> + size_t cnt,
> + loff_t *ppos)
> +{
> + struct drm_device *dev = filp->private_data;
> + struct drm_i915_private *dev_priv = dev->dev_private;
> + char buf[20];
> + int val = 1;
> +
> + if (cnt > 0) {
> + if (cnt > sizeof (buf) - 1)
> + return -EINVAL;
> +
> + if (copy_from_user(buf, ubuf, cnt))
> + return -EFAULT;
> + buf[cnt] = 0;
> +
> + val = simple_strtoul(buf, NULL, 0);
> + }
> +
> + DRM_DEBUG_DRIVER("Manually setting freq to %d\n", val);
And 'max freq' here too.
Otherwise, this seems useful to me too.
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