camera: Reimplement camera driver for Android camera 2.0
This change reimplements MSM camera V4L2 driver for camera
2.0. Current architecture cannot support 2.0 API very well.
This initial change contains plumbing code for v4l2 device
node creation, ioctls, events, videobuf2, etc.
The new code avoids payload deep-copy by passing them
between user space processes via IPC.
Change-Id: I8598cce8dd25fbd19743398ae0d228081f847d98
Signed-off-by: Jignesh Mehta <jigneshm@codeaurora.org>
Signed-off-by: Shuzhen Wang <shuzhenw@codeaurora.org>
diff --git a/include/media/msmb_camera.h b/include/media/msmb_camera.h
new file mode 100644
index 0000000..ca43a5b
--- /dev/null
+++ b/include/media/msmb_camera.h
@@ -0,0 +1,143 @@
+#ifndef __LINUX_MSMB_CAMERA_H
+#define __LINUX_MSMB_CAMERA_H
+
+#include <linux/videodev2.h>
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#define MSM_CAM_V4L2_IOCTL_NOTIFY \
+ _IOW('V', BASE_VIDIOC_PRIVATE + 30, struct v4l2_event)
+
+#define MSM_CAM_V4L2_IOCTL_NOTIFY_META \
+ _IOW('V', BASE_VIDIOC_PRIVATE + 31, struct v4l2_event)
+
+#define MSM_CAM_V4L2_IOCTL_CMD_ACK \
+ _IOW('V', BASE_VIDIOC_PRIVATE + 32, struct v4l2_event)
+
+#define QCAMERA_DEVICE_GROUP_ID 1
+#define QCAMERA_VNODE_GROUP_ID 2
+#define MSM_CAMERA_NAME "msm_camera"
+#define MSM_CONFIGURATION_NAME "msm_config"
+
+/* featur base */
+#define MSM_CAMERA_FEATURE_BASE 0x00010000
+#define MSM_CAMERA_FEATURE_SHUTDOWN (MSM_CAMERA_FEATURE_BASE + 1)
+
+#define MSM_CAMERA_STATUS_BASE 0x00020000
+#define MSM_CAMERA_STATUS_FAIL (MSM_CAMERA_STATUS_BASE + 1)
+#define MSM_CAMERA_STATUS_SUCCESS (MSM_CAMERA_STATUS_BASE + 2)
+
+/* event type */
+#define MSM_CAMERA_V4L2_EVENT_TYPE (V4L2_EVENT_PRIVATE_START + 0x00002000)
+
+/* event id */
+#define MSM_CAMERA_EVENT_MIN 0
+#define MSM_CAMERA_NEW_SESSION (MSM_CAMERA_EVENT_MIN + 1)
+#define MSM_CAMERA_DEL_SESSION (MSM_CAMERA_EVENT_MIN + 2)
+#define MSM_CAMERA_SET_PARM (MSM_CAMERA_EVENT_MIN + 3)
+#define MSM_CAMERA_GET_PARM (MSM_CAMERA_EVENT_MIN + 4)
+#define MSM_CAMERA_MAPPING_CFG (MSM_CAMERA_EVENT_MIN + 5)
+#define MSM_CAMERA_MAPPING_SES (MSM_CAMERA_EVENT_MIN + 6)
+#define MSM_CAMERA_MSM_NOTIFY (MSM_CAMERA_EVENT_MIN + 7)
+#define MSM_CAMERA_EVENT_MAX (MSM_CAMERA_EVENT_MIN + 8)
+
+/* data.command */
+#define MSM_CAMERA_PRIV_S_CROP (V4L2_CID_PRIVATE_BASE + 1)
+#define MSM_CAMERA_PRIV_G_CROP (V4L2_CID_PRIVATE_BASE + 2)
+#define MSM_CAMERA_PRIV_G_FMT (V4L2_CID_PRIVATE_BASE + 3)
+#define MSM_CAMERA_PRIV_S_FMT (V4L2_CID_PRIVATE_BASE + 4)
+#define MSM_CAMERA_PRIV_TRY_FMT (V4L2_CID_PRIVATE_BASE + 5)
+#define MSM_CAMERA_PRIV_METADATA (V4L2_CID_PRIVATE_BASE + 6)
+#define MSM_CAMERA_PRIV_QUERY_CAP (V4L2_CID_PRIVATE_BASE + 7)
+#define MSM_CAMERA_PRIV_STREAM_ON (V4L2_CID_PRIVATE_BASE + 8)
+#define MSM_CAMERA_PRIV_STREAM_OFF (V4L2_CID_PRIVATE_BASE + 9)
+#define MSM_CAMERA_PRIV_NEW_STREAM (V4L2_CID_PRIVATE_BASE + 10)
+#define MSM_CAMERA_PRIV_DEL_STREAM (V4L2_CID_PRIVATE_BASE + 11)
+#define MSM_CAMERA_PRIV_SHUTDOWN (V4L2_CID_PRIVATE_BASE + 12)
+#define MSM_CAMERA_PRIV_STREAM_INFO_SYNC \
+ (V4L2_CID_PRIVATE_BASE + 13)
+
+/* data.status - success */
+#define MSM_CAMERA_CMD_SUCESS 0x00000001
+#define MSM_CAMERA_BUF_MAP_SUCESS 0x00000002
+
+/* data.status - error */
+#define MSM_CAMERA_ERR_EVT_BASE 0x00010000
+#define MSM_CAMERA_ERR_CMD_FAIL (MSM_CAMERA_ERR_EVT_BASE + 1)
+#define MSM_CAMERA_ERR_MAPPING (MSM_CAMERA_ERR_EVT_BASE + 2)
+
+/* The msm_v4l2_event_data structure should match the
+ * v4l2_event.u.data field.
+ * should not exceed 16 elements */
+struct msm_v4l2_event_data {
+ /*word 0*/
+ unsigned int command;
+ /*word 1*/
+ unsigned int status;
+ /*word 2*/
+ unsigned int session_id;
+ /*word 3*/
+ unsigned int stream_id;
+ /*word 4*/
+ unsigned int map_op;
+ /*word 5*/
+ unsigned int map_buf_idx;
+ /*word 6*/
+ unsigned int notify;
+ /*word 7*/
+ unsigned int nop1;
+ /*word 8*/
+ unsigned int nop2;
+ /*word 9*/
+ unsigned int nop3;
+ /*word 10*/
+ unsigned int nop4;
+ /*word 11*/
+ unsigned int nop5;
+ /*word 12*/
+ unsigned int nop6;
+ /*word 13*/
+ unsigned int nop7;
+ /*word 14*/
+ unsigned int nop8;
+ /*word 15*/
+ unsigned int nop9;
+};
+
+/* map to v4l2_format.fmt.raw_data */
+struct msm_v4l2_format_data {
+ enum v4l2_buf_type type;
+ unsigned int width;
+ unsigned int height;
+ unsigned int pixelformat; /* FOURCC */
+ unsigned char num_planes;
+ unsigned int plane_sizes[VIDEO_MAX_PLANES];
+};
+
+/* MSM Four-character-code (FOURCC) */
+#define msm_v4l2_fourcc(a, b, c, d)\
+ ((__u32)(a) | ((__u32)(b) << 8) | ((__u32)(c) << 16) |\
+ ((__u32)(d) << 24))
+
+/* Composite stats */
+#define MSM_V4L2_PIX_FMT_STATS_COMB v4l2_fourcc('S', 'T', 'C', 'M')
+/* AEC stats */
+#define MSM_V4L2_PIX_FMT_STATS_AE v4l2_fourcc('S', 'T', 'A', 'E')
+/* AF stats */
+#define MSM_V4L2_PIX_FMT_STATS_AF v4l2_fourcc('S', 'T', 'A', 'F')
+/* AWB stats */
+#define MSM_V4L2_PIX_FMT_STATS_AWB v4l2_fourcc('S', 'T', 'W', 'B')
+/* IHIST stats */
+#define MSM_V4L2_PIX_FMT_STATS_IHST v4l2_fourcc('I', 'H', 'S', 'T')
+/* Column count stats */
+#define MSM_V4L2_PIX_FMT_STATS_CS v4l2_fourcc('S', 'T', 'C', 'S')
+/* Row count stats */
+#define MSM_V4L2_PIX_FMT_STATS_RS v4l2_fourcc('S', 'T', 'R', 'S')
+/* Bayer Grid stats */
+#define MSM_V4L2_PIX_FMT_STATS_BG v4l2_fourcc('S', 'T', 'B', 'G')
+/* Bayer focus stats */
+#define MSM_V4L2_PIX_FMT_STATS_BF v4l2_fourcc('S', 'T', 'B', 'F')
+/* Bayer hist stats */
+#define MSM_V4L2_PIX_FMT_STATS_BHST v4l2_fourcc('B', 'H', 'S', 'T')
+
+#endif /* __LINUX_MSMB_CAMERA_H */