msm: BA: Create Bridge Abstraction (BA)

Create bridge abstraction driver to provide a framework that can be
used to abstract different types of bridge chips under a common API.
The framework also allows multiple drivers to control different
functional aspects of a bridge chip.
The bridge abstraction driver is limited to bridge chips that deal
with converting audio/video data from one protocol to a different one.

Change-Id: Ib42365fb41afda8029f4f6e9b1ec27549d885659
Signed-off-by: Domi Papoi <dpapoi@codeaurora.org>

3 files changed, 110 insertions, 0 deletions

diff --git a/include/media/msm_ba.h b/include/media/msm_ba.h
new file mode 100644
index 000000000000..1b51e3f754d8
--- /dev/null
+++ b/include/media/msm_ba.h
@@ -0,0 +1,81 @@
+/* Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _MSM_BA_H_
+#define _MSM_BA_H_
+
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <linux/poll.h>
+
+enum msm_ba_ip {
+	BA_IP_CVBS_0 = 0,
+	BA_IP_CVBS_1,
+	BA_IP_CVBS_2,
+	BA_IP_CVBS_3,
+	BA_IP_CVBS_4,
+	BA_IP_CVBS_5,
+	BA_IP_SVIDEO_0,
+	BA_IP_SVIDEO_1,
+	BA_IP_SVIDEO_2,
+	BA_IP_COMPONENT_0,
+	BA_IP_COMPONENT_1,
+	BA_IP_DVI_0,
+	BA_IP_DVI_1,
+	BA_IP_HDMI_1,
+	BA_IP_MHL_1,
+	BA_IP_TTL,
+	BA_IP_MAX = 0xffffffff
+};
+
+enum msm_ba_save_restore_ip {
+	BA_SR_RESTORE_IP = 0,
+	BA_SR_SAVE_IP,
+	BA_SR_MAX = 0xffffffff
+};
+
+struct msm_ba_ext_ops {
+	void (*msm_ba_cb)(void *instance,
+		unsigned int event_id, void *arg);
+};
+
+void *msm_ba_open(const struct msm_ba_ext_ops *ext_ops);
+int msm_ba_close(void *instance);
+int msm_ba_querycap(void *instance, struct v4l2_capability *cap);
+int msm_ba_g_priority(void *instance, enum v4l2_priority *prio);
+int msm_ba_s_priority(void *instance, enum v4l2_priority prio);
+int msm_ba_enum_input(void *instance, struct v4l2_input *input);
+int msm_ba_g_input(void *instance, unsigned int *index);
+int msm_ba_s_input(void *instance, unsigned int index);
+int msm_ba_enum_output(void *instance, struct v4l2_output *output);
+int msm_ba_g_output(void *instance, unsigned int *index);
+int msm_ba_s_output(void *instance, unsigned int index);
+int msm_ba_enum_fmt(void *instance, struct v4l2_fmtdesc *f);
+int msm_ba_s_fmt(void *instance, struct v4l2_format *f);
+int msm_ba_g_fmt(void *instance, struct v4l2_format *f);
+int msm_ba_s_ctrl(void *instance, struct v4l2_control *a);
+int msm_ba_s_ext_ctrl(void *instance, struct v4l2_ext_controls *a);
+int msm_ba_g_ctrl(void *instance, struct v4l2_control *a);
+int msm_ba_streamon(void *instance, enum v4l2_buf_type i);
+int msm_ba_streamoff(void *instance, enum v4l2_buf_type i);
+int msm_ba_save_restore_input(void *instance, enum msm_ba_save_restore_ip sr);
+int msm_ba_poll(void *instance, struct file *filp,
+		struct poll_table_struct *pt);
+int msm_ba_subscribe_event(void *instance,
+				const struct v4l2_event_subscription *sub);
+int msm_ba_unsubscribe_event(void *instance,
+				const struct v4l2_event_subscription *sub);
+int msm_ba_s_parm(void *instance, struct v4l2_streamparm *a);
+int msm_ba_register_subdev_node(struct v4l2_subdev *sd);
+int msm_ba_unregister_subdev_node(struct v4l2_subdev *sd);
+#endif
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 336d318c5187..2e4c02f24a47 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -1331,6 +1331,12 @@ enum v4l2_auto_focus_range {
 #define V4L2_CID_PAN_SPEED			(V4L2_CID_CAMERA_CLASS_BASE+32)
 #define V4L2_CID_TILT_SPEED			(V4L2_CID_CAMERA_CLASS_BASE+33)
 
+/* User-class control IDs specific to the msm_ba driver */
+
+#define MSM_BA_PRIV_BASE_START			(V4L2_CID_USER_BASE | 0x7000)
+#define MSM_BA_PRIV_SD_NODE_ADDR		(MSM_BA_PRIV_BASE_START + 1)
+#define MSM_BA_PRIV_FPS			(MSM_BA_PRIV_BASE_START + 2)
+
 /* FM Modulator class control IDs */
 
 #define V4L2_CID_FM_TX_CLASS_BASE		(V4L2_CTRL_CLASS_FM_TX | 0x900)
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 686fc6143010..9823ff7e8f4d 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -2187,6 +2187,29 @@ struct v4l2_streamparm {
 #define V4L2_EVENT_MSM_VIDC_MAX_CLIENTS (V4L2_EVENT_MSM_VIDC_START + 9)
 #define V4L2_EVENT_MSM_VIDC_HW_UNSUPPORTED (V4L2_EVENT_MSM_VIDC_START + 10)
 
+#define V4L2_EVENT_MSM_BA_PRIVATE_EVENT_BASE	\
+		(V4L2_EVENT_PRIVATE_START + 0x00005000)
+#define V4L2_EVENT_MSM_BA_START	V4L2_EVENT_MSM_BA_PRIVATE_EVENT_BASE
+#define V4L2_EVENT_MSM_BA_DEVICE_AVAILABLE	(V4L2_EVENT_MSM_BA_START + 1)
+#define V4L2_EVENT_MSM_BA_DEVICE_UNAVAILABLE	\
+		(V4L2_EVENT_MSM_BA_START + 2)
+#define V4L2_EVENT_MSM_BA_PORT_SETTINGS_CHANGED	\
+		(V4L2_EVENT_MSM_BA_START + 3)
+#define V4L2_EVENT_MSM_BA_SIGNAL_IN_LOCK	\
+		(V4L2_EVENT_MSM_BA_START + 4)
+#define V4L2_EVENT_MSM_BA_SIGNAL_LOST_LOCK	\
+		(V4L2_EVENT_MSM_BA_START + 5)
+#define V4L2_EVENT_MSM_BA_SOURCE_CHANGE	\
+		(V4L2_EVENT_MSM_BA_START + 6)
+#define V4L2_EVENT_MSM_BA_HDMI_HPD	\
+		(V4L2_EVENT_MSM_BA_START + 7)
+#define V4L2_EVENT_MSM_BA_HDMI_CEC_MESSAGE	\
+		(V4L2_EVENT_MSM_BA_START + 8)
+#define V4L2_EVENT_MSM_BA_CP	\
+		(V4L2_EVENT_MSM_BA_START + 9)
+#define V4L2_EVENT_MSM_BA_ERROR	\
+		(V4L2_EVENT_MSM_BA_START + 10)
+
 /* Payload for V4L2_EVENT_VSYNC */
 struct v4l2_event_vsync {
 	/* Can be V4L2_FIELD_ANY, _NONE, _TOP or _BOTTOM */