diff options
Diffstat (limited to 'drivers/media/cec')
| -rw-r--r-- | drivers/media/cec/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/media/cec/cec-core.c | 1 | ||||
| -rw-r--r-- | drivers/media/cec/cec-notifier.c | 30 |
3 files changed, 33 insertions, 2 deletions
diff --git a/drivers/media/cec/Kconfig b/drivers/media/cec/Kconfig index 9c2b108c613a..b5aadacf335a 100644 --- a/drivers/media/cec/Kconfig +++ b/drivers/media/cec/Kconfig @@ -2,11 +2,11 @@ config MEDIA_CEC_RC bool "HDMI CEC RC integration" depends on CEC_CORE && RC_CORE depends on CEC_CORE=m || RC_CORE=y - ---help--- + help Pass on CEC remote control messages to the RC framework. config CEC_PIN_ERROR_INJ bool "Enable CEC error injection support" depends on CEC_PIN && DEBUG_FS - ---help--- + help This option enables CEC error injection using debugfs. diff --git a/drivers/media/cec/cec-core.c b/drivers/media/cec/cec-core.c index cc875dabd765..f5d1578e256a 100644 --- a/drivers/media/cec/cec-core.c +++ b/drivers/media/cec/cec-core.c @@ -126,6 +126,7 @@ static int __must_check cec_devnode_register(struct cec_devnode *devnode, /* Part 2: Initialize and register the character device */ cdev_init(&devnode->cdev, &cec_devnode_fops); devnode->cdev.owner = owner; + kobject_set_name(&devnode->cdev.kobj, "cec%d", devnode->minor); ret = cdev_device_add(&devnode->cdev, &devnode->dev); if (ret) { diff --git a/drivers/media/cec/cec-notifier.c b/drivers/media/cec/cec-notifier.c index dd2078b27a41..9598c7778871 100644 --- a/drivers/media/cec/cec-notifier.c +++ b/drivers/media/cec/cec-notifier.c @@ -11,6 +11,7 @@ #include <linux/slab.h> #include <linux/list.h> #include <linux/kref.h> +#include <linux/of_platform.h> #include <media/cec.h> #include <media/cec-notifier.h> @@ -127,3 +128,32 @@ void cec_notifier_unregister(struct cec_notifier *n) cec_notifier_put(n); } EXPORT_SYMBOL_GPL(cec_notifier_unregister); + +struct device *cec_notifier_parse_hdmi_phandle(struct device *dev) +{ + struct platform_device *hdmi_pdev; + struct device *hdmi_dev = NULL; + struct device_node *np; + + np = of_parse_phandle(dev->of_node, "hdmi-phandle", 0); + + if (!np) { + dev_err(dev, "Failed to find HDMI node in device tree\n"); + return ERR_PTR(-ENODEV); + } + hdmi_pdev = of_find_device_by_node(np); + of_node_put(np); + if (hdmi_pdev) { + hdmi_dev = &hdmi_pdev->dev; + /* + * Note that the device struct is only used as a key into the + * cec_notifiers list, it is never actually accessed. + * So we decrement the reference here so we don't leak + * memory. + */ + put_device(hdmi_dev); + return hdmi_dev; + } + return ERR_PTR(-EPROBE_DEFER); +} +EXPORT_SYMBOL_GPL(cec_notifier_parse_hdmi_phandle); |