V4L/DVB (3430): Add new internal VIDIOC_INT commands

- Add new internal VIDIOC_INT commands for setting the tuner mode,
for putting a chip into standby mode and to set/get the routing
of inputs/outputs of audio or video of a chip. These new commands
will replace older commands that are no longer up to the task.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

include/media/v4l2-common.h

@@ -115,12 +115,15 @@ enum v4l2_chip_ident {
 };
 
 /* audio ioctls */
-/* v4l device was opened in Radio mode */
+
+/* v4l device was opened in Radio mode, to be replaced by VIDIOC_INT_S_TUNER_MODE */
 #define AUDC_SET_RADIO        _IO('d',88)
-/* select from TV,radio,extern,MUTE */
+
+/* select from TV,radio,extern,MUTE, to be replaced with VIDIOC_INT_S_AUDIO_ROUTING */
 #define AUDC_SET_INPUT        _IOW('d',89,int)
 
-/* msp3400 ioctl: will be removed in the near future */
+/* msp3400 ioctl: will be removed in the near future, to be replaced by
+   VIDIOC_INT_S_AUDIO_ROUTING. */
 struct msp_matrix {
   int input;
   int output;
@@ -128,13 +131,26 @@ struct msp_matrix {
 #define MSP_SET_MATRIX     _IOW('m',17,struct msp_matrix)
 
 /* tuner ioctls */
+
 /* Sets tuner type and its I2C addr */
 #define TUNER_SET_TYPE_ADDR          _IOW('d', 90, int)
-/* Puts tuner on powersaving state, disabling it, except for i2c */
+
+/* Puts tuner on powersaving state, disabling it, except for i2c. To be replaced
+   by VIDIOC_INT_S_STANDBY. */
 #define TUNER_SET_STANDBY            _IOW('d', 91, int)
+
 /* Sets tda9887 specific stuff, like port1, port2 and qss */
 #define TDA9887_SET_CONFIG           _IOW('d', 92, int)
 
+/* Switch the tuner to a specific tuner mode. Replacement of AUDC_SET_RADIO */
+#define VIDIOC_INT_S_TUNER_MODE	     _IOW('d', 93, enum v4l2_tuner_type)
+
+/* Generic standby command. Passing -1 (all bits set to 1) will put the whole
+   chip into standby mode, value 0 will make the chip fully active. Specific
+   bits can be used by certain chips to enable/disable specific subsystems.
+   Replacement of TUNER_SET_STANDBY. */
+#define VIDIOC_INT_S_STANDBY 	     _IOW('d', 94, u32)
+
 /* only implemented if CONFIG_VIDEO_ADV_DEBUG is defined */
 #define	VIDIOC_INT_S_REGISTER 		_IOR ('d', 100, struct v4l2_register)
 #define	VIDIOC_INT_G_REGISTER 		_IOWR('d', 101, struct v4l2_register)
@@ -181,4 +197,25 @@ struct msp_matrix {
    If the frequency is not supported, then -EINVAL is returned. */
 #define VIDIOC_INT_I2S_CLOCK_FREQ 	_IOW ('d', 108, u32)
 
+/* Routing definition, device dependent. It specifies which inputs (if any)
+   should be routed to which outputs (if any). */
+struct v4l2_routing {
+	u32 input;
+	u32 output;
+};
+
+/* These internal commands should be used to define the inputs and outputs
+   of an audio/video chip. They will replace AUDC_SET_INPUT.
+   The v4l2 API commands VIDIOC_S/G_INPUT, VIDIOC_S/G_OUTPUT,
+   VIDIOC_S/G_AUDIO and VIDIOC_S/G_AUDOUT are meant to be used by the
+   user. Internally these commands should be used to switch inputs/outputs
+   because only the driver knows how to map a 'Television' input to the precise
+   input/output routing of an A/D converter, or a DSP, or a video digitizer.
+   These four commands should only be sent directly to an i2c device, they
+   should not be broadcast as the routing is very device specific. */
+#define	VIDIOC_INT_S_AUDIO_ROUTING	_IOW ('d', 109, struct v4l2_routing)
+#define	VIDIOC_INT_G_AUDIO_ROUTING	_IOR ('d', 110, struct v4l2_routing *)
+#define	VIDIOC_INT_S_VIDEO_ROUTING	_IOW ('d', 111, struct v4l2_routing)
+#define	VIDIOC_INT_G_VIDEO_ROUTING	_IOR ('d', 112, struct v4l2_routing *)
+
 #endif /* V4L2_COMMON_H_ */