On 12/23/2014 03:32 PM, Kamil Debski wrote:
From: Hans Verkuil hansv...@cisco.com
Add the CEC framework.
Signed-off-by: Hans Verkuil hansv...@cisco.com
[k.deb...@samsung.com: Merged CEC Updates commit by Hans Verkuil]
[k.deb...@samsung.com: Merged Update author commit by Hans Verkuil]
[k.deb...@samsung.com: change kthread handling when setting logical
address]
[k.deb...@samsung.com: code cleanup]
Signed-off-by: Kamil Debski k.deb...@samsung.com
---
cec-rfc.txt | 319 ++
cec.txt | 40 ++
drivers/media/Kconfig|5 +
drivers/media/Makefile |2 +
drivers/media/cec.c | 1048
++
include/media/cec.h | 129 ++
include/uapi/linux/cec.h | 222 ++
7 files changed, 1765 insertions(+)
create mode 100644 cec-rfc.txt
create mode 100644 cec.txt
create mode 100644 drivers/media/cec.c
create mode 100644 include/media/cec.h
create mode 100644 include/uapi/linux/cec.h
...
diff --git a/include/uapi/linux/cec.h b/include/uapi/linux/cec.h
new file mode 100644
index 000..a2c78d7
--- /dev/null
+++ b/include/uapi/linux/cec.h
@@ -0,0 +1,222 @@
+#ifndef _CEC_H
+#define _CEC_H
+
+#include linux/types.h
+
+struct cec_msg {
+ __u32 len;
+ __u8 msg[16];
+ __u32 status;
+ /* If non-zero, then wait for a reply with this opcode.
+If there was an error when sending the msg or FeatureAbort
+was returned, then reply is set to 0.
+If reply is non-zero upon return, then len/msg are set to
+the received message.
+If reply is zero upon return and status has the
CEC_TX_STATUS_FEATURE_ABORT
+bit set, then len/msg are set to the received feature abort message.
+If reply is zero upon return and status has the
CEC_TX_STATUS_REPLY_TIMEOUT
+bit set, then no reply was seen at all.
+This field is ignored with CEC_RECEIVE.
+If reply is non-zero for CEC_TRANSMIT and the message is a broadcast,
+then -EINVAL is returned.
+if reply is non-zero, then timeout is set to 1000 (the required
maximum
+response time).
+ */
+ __u8 reply;
+ /* timeout (in ms) is used to timeout CEC_RECEIVE.
+Set to 0 if you want to wait forever. */
+ __u32 timeout;
+ struct timespec ts;
+};
+
+static inline __u8 cec_msg_initiator(const struct cec_msg *msg)
+{
+ return msg-msg[0] 4;
+}
+
+static inline __u8 cec_msg_destination(const struct cec_msg *msg)
+{
+ return msg-msg[0] 0xf;
+}
+
+static inline bool cec_msg_is_broadcast(const struct cec_msg *msg)
+{
+ return (msg-msg[0] 0xf) == 0xf;
+}
+
+/* cec status field */
+#define CEC_TX_STATUS_OK(0)
+#define CEC_TX_STATUS_ARB_LOST (1 0)
+#define CEC_TX_STATUS_RETRY_TIMEOUT (1 1)
+#define CEC_TX_STATUS_FEATURE_ABORT (1 2)
+#define CEC_TX_STATUS_REPLY_TIMEOUT (1 3)
+#define CEC_RX_STATUS_READY (0)
+
+#define CEC_LOG_ADDR_INVALID 0xff
+
+// The maximum number of logical addresses one device can be assigned to.
+// The CEC 2.0 spec allows for only 2 logical addresses at the moment. The
+// Analog Devices CEC hardware supports 3. So let's go wild and go for 4.
+#define CEC_MAX_LOG_ADDRS 4
+
+// You are in a maze of twisty little defines, all alike
+// What were they thinking of when they came up with this mess...
+
+// The Primary Device Type
+#define CEC_PRIM_DEVTYPE_TV 0
+#define CEC_PRIM_DEVTYPE_RECORD 1
+#define CEC_PRIM_DEVTYPE_TUNER 3
+#define CEC_PRIM_DEVTYPE_PLAYBACK4
+#define CEC_PRIM_DEVTYPE_AUDIOSYSTEM 5
+#define CEC_PRIM_DEVTYPE_SWITCH 6
+#define CEC_PRIM_DEVTYPE_VIDEOPROC 7
+
+// The All Device Types flags (CEC 2.0)
+#define CEC_FL_ALL_DEVTYPE_TV(1 7)
+#define CEC_FL_ALL_DEVTYPE_RECORD(1 6)
+#define CEC_FL_ALL_DEVTYPE_TUNER (1 5)
+#define CEC_FL_ALL_DEVTYPE_PLAYBACK (1 4)
+#define CEC_FL_ALL_DEVTYPE_AUDIOSYSTEM (1 3)
+#define CEC_FL_ALL_DEVTYPE_SWITCH(1 2)
+// And if you wondering what happened to VIDEOPROC devices: those should
+// be mapped to a SWITCH.
+
+// The logical address types that the CEC device wants to claim
+#define CEC_LOG_ADDR_TYPE_TV 0
+#define CEC_LOG_ADDR_TYPE_RECORD 1
+#define CEC_LOG_ADDR_TYPE_TUNER 2
+#define CEC_LOG_ADDR_TYPE_PLAYBACK 3
+#define CEC_LOG_ADDR_TYPE_AUDIOSYSTEM4
+#define CEC_LOG_ADDR_TYPE_SPECIFIC 5
+#define CEC_LOG_ADDR_TYPE_UNREGISTERED 6
+// Switches should use UNREGISTERED.
+// Video processors should use SPECIFIC.
+
+// The CEC version
+#define CEC_VERSION_1_4B 5
+#define CEC_VERSION_2_0 6
+
+struct cec_event {
+ __u32 event;
+ struct timespec ts;
+};
+
+/* Userspace has to configure the adapter state (enable/disable) */
+#define CEC_CAP_STATE
