This header declares the code and structures used to parse
Hauppauge eeproms. As this is part of the V4L2 common, and
used by several drivers, let's properly document it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>
diff --git a/Documentation/DocBook/device-drivers.tmpl b/Documentation/DocBook/device-drivers.tmpl
index 8ce967a48c58..bdc0f7e0a55d 100644
--- a/Documentation/DocBook/device-drivers.tmpl
+++ b/Documentation/DocBook/device-drivers.tmpl
@@ -223,6 +223,7 @@ X!Isound/sound_firmware.c
<sect1><title>Video2Linux devices</title>
!Iinclude/media/tuner.h
!Iinclude/media/tuner-types.h
+!Iinclude/media/tveeprom.h
!Iinclude/media/v4l2-async.h
!Iinclude/media/v4l2-ctrls.h
!Iinclude/media/v4l2-dv-timings.h
diff --git a/include/media/tveeprom.h b/include/media/tveeprom.h
index bb484967ef8b..8be898739e0c 100644
--- a/include/media/tveeprom.h
+++ b/include/media/tveeprom.h
@@ -1,28 +1,63 @@
+
/*
+ * tveeprom - Contains structures and functions to work with Hauppauge
+ * eeproms.
*/
+#include <linux/if_ether.h>
+
+/**
+ * enum tveeprom_audio_processor - Specifies the type of audio processor
+ * used on a Hauppauge device.
+ *
+ * @TVEEPROM_AUDPROC_NONE: No audio processor present
+ * @TVEEPROM_AUDPROC_INTERNAL: The audio processor is internal to the
+ * video processor
+ * @TVEEPROM_AUDPROC_MSP: The audio processor is a MSPXXXX device
+ * @TVEEPROM_AUDPROC_OTHER: The audio processor is another device
+ */
enum tveeprom_audio_processor {
- /* No audio processor present */
TVEEPROM_AUDPROC_NONE,
- /* The audio processor is internal to the video processor */
TVEEPROM_AUDPROC_INTERNAL,
- /* The audio processor is a MSPXXXX device */
TVEEPROM_AUDPROC_MSP,
- /* The audio processor is another device */
TVEEPROM_AUDPROC_OTHER,
};
-#include <linux/if_ether.h>
-
+/**
+ * struct tveeprom - Contains the fields parsed from Hauppauge eeproms
+ *
+ * @has_radio: 1 if the device has radio; 0 otherwise.
+ * @has_ir: If has_ir == 0, then it is unknown what the IR
+ * capabilities are. Otherwise:
+ * bit 0) 1 (= IR capabilities are known);
+ * bit 1) IR receiver present;
+ * bit 2) IR transmitter (blaster) present.
+ * @has_MAC_address: 0: no MAC, 1: MAC present, 2: unknown.
+ * @tuner_type: type of the tuner (TUNER_*, as defined at
+ * include/media/tuner.h).
+ * @tuner_formats: Supported analog TV standards (V4L2_STD_*).
+ * @tuner_hauppauge_model: Hauppauge's code for the device model number.
+ * @tuner2_type: type of the second tuner (TUNER_*, as defined
+ * at include/media/tuner.h).
+ * @tuner2_formats: Tuner 2 supported analog TV standards
+ * (V4L2_STD_*).
+ * @tuner2_hauppauge_model: tuner 2 Hauppauge's code for the device model
+ * number.
+ * @audio_processor: analog audio decoder, as defined by enum
+ * tveeprom_audio_processor.
+ * @decoder_processor: Hauppauge's code for the decoder chipset.
+ * Unused by the drivers, as they probe the
+ * decoder based on the PCI or USB ID.
+ * @model: Hauppauge's model number
+ * @revision: Card revision number
+ * @serial_number: Card's serial number
+ * @rev_str: Card revision converted to number
+ * @MAC_address: MAC address for the network interface
+ */
struct tveeprom {
u32 has_radio;
- /* If has_ir == 0, then it is unknown what the IR capabilities are,
- otherwise:
- bit 0: 1 (= IR capabilities are known)
- bit 1: IR receiver present
- bit 2: IR transmitter (blaster) present */
u32 has_ir;
- u32 has_MAC_address; /* 0: no MAC, 1: MAC present, 2: unknown */
+ u32 has_MAC_address;
u32 tuner_type;
u32 tuner_formats;
@@ -42,7 +77,28 @@ struct tveeprom {
u8 MAC_address[ETH_ALEN];
};
+/**
+ * tveeprom_hauppauge_analog - Fill struct tveeprom using the contents
+ * of the eeprom previously filled at
+ * @eeprom_data field.
+ *
+ * @c: I2C client struct
+ * @tvee: Struct to where the eeprom parsed data will be filled;
+ * @eeprom_data: Array with the contents of the eeprom_data. It should
+ * contain 256 bytes filled with the contents of the
+ * eeprom read from the Hauppauge device.
+ */
void tveeprom_hauppauge_analog(struct i2c_client *c, struct tveeprom *tvee,
unsigned char *eeprom_data);
+/**
+ * tveeprom_read - Reads the contents of the eeprom found at the Hauppauge
+ * devices.
+ *
+ * @c: I2C client struct
+ * @eedata: Array where the eeprom content will be stored.
+ * @len: Size of @eedata array. If the eeprom content will be latter
+ * be parsed by tveeprom_hauppauge_analog(), len should be, at
+ * least, 256.
+ */
int tveeprom_read(struct i2c_client *c, unsigned char *eedata, int len);
--
2.4.3
--
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