[media] omap3isp: Statistics

The OMAP3 ISP statistics entities compute histogram and H3A statistics
information from capture images.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David Cohen <dacohen@gmail.com>
Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Vimarsh Zutshi <vimarsh.zutshi@gmail.com>
Signed-off-by: Tuukka Toivonen <tuukkat76@gmail.com>
Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
Signed-off-by: Antti Koskipaa <akoskipa@gmail.com>
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: RaniSuneela <r-m@ti.com>
Signed-off-by: Atanas Filipov <afilipov@mm-sol.com>
Signed-off-by: Gjorgji Rosikopulos <grosikopulos@mm-sol.com>
Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Nayden Kanchev <nkanchev@mm-sol.com>
Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Dominic Curran <dcurran@ti.com>
Signed-off-by: Ilkka Myllyperkio <ilkka.myllyperkio@sofica.fi>
Signed-off-by: Pallavi Kulkarni <p-kulkarni@ti.com>
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 169 insertions, 0 deletions

diff --git a/drivers/media/video/omap3isp/ispstat.h b/drivers/media/video/omap3isp/ispstat.h
new file mode 100644
index 00000000000..820950c9ef4
--- /dev/null
+++ b/drivers/media/video/omap3isp/ispstat.h
@@ -0,0 +1,169 @@
+/*
+ * ispstat.h
+ *
+ * TI OMAP3 ISP - Statistics core
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc
+ *
+ * Contacts: David Cohen <dacohen@gmail.com>
+ *	     Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ *	     Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef OMAP3_ISP_STAT_H
+#define OMAP3_ISP_STAT_H
+
+#include <linux/types.h>
+#include <linux/omap3isp.h>
+#include <plat/dma.h>
+#include <media/v4l2-event.h>
+
+#include "isp.h"
+#include "ispvideo.h"
+
+#define STAT_MAX_BUFS		5
+#define STAT_NEVENTS		8
+
+#define STAT_BUF_DONE		0	/* Buffer is ready */
+#define STAT_NO_BUF		1	/* An error has occurred */
+#define STAT_BUF_WAITING_DMA	2	/* Histogram only: DMA is running */
+
+struct ispstat;
+
+struct ispstat_buffer {
+	unsigned long iommu_addr;
+	struct iovm_struct *iovm;
+	void *virt_addr;
+	dma_addr_t dma_addr;
+	struct timeval ts;
+	u32 buf_size;
+	u32 frame_number;
+	u16 config_counter;
+	u8 empty;
+};
+
+struct ispstat_ops {
+	/*
+	 * Validate new params configuration.
+	 * new_conf->buf_size value must be changed to the exact buffer size
+	 * necessary for the new configuration if it's smaller.
+	 */
+	int (*validate_params)(struct ispstat *stat, void *new_conf);
+
+	/*
+	 * Save new params configuration.
+	 * stat->priv->buf_size value must be set to the exact buffer size for
+	 * the new configuration.
+	 * stat->update is set to 1 if new configuration is different than
+	 * current one.
+	 */
+	void (*set_params)(struct ispstat *stat, void *new_conf);
+
+	/* Apply stored configuration. */
+	void (*setup_regs)(struct ispstat *stat, void *priv);
+
+	/* Enable/Disable module. */
+	void (*enable)(struct ispstat *stat, int enable);
+
+	/* Verify is module is busy. */
+	int (*busy)(struct ispstat *stat);
+
+	/* Used for specific operations during generic buf process task. */
+	int (*buf_process)(struct ispstat *stat);
+};
+
+enum ispstat_state_t {
+	ISPSTAT_DISABLED = 0,
+	ISPSTAT_DISABLING,
+	ISPSTAT_ENABLED,
+	ISPSTAT_ENABLING,
+	ISPSTAT_SUSPENDED,
+};
+
+struct ispstat {
+	struct v4l2_subdev subdev;
+	struct media_pad pad;	/* sink pad */
+
+	/* Control */
+	unsigned configured:1;
+	unsigned update:1;
+	unsigned buf_processing:1;
+	unsigned sbl_ovl_recover:1;
+	u8 inc_config;
+	atomic_t buf_err;
+	enum ispstat_state_t state;	/* enabling/disabling state */
+	struct omap_dma_channel_params dma_config;
+	struct isp_device *isp;
+	void *priv;		/* pointer to priv config struct */
+	void *recover_priv;	/* pointer to recover priv configuration */
+	struct mutex ioctl_lock; /* serialize private ioctl */
+
+	const struct ispstat_ops *ops;
+
+	/* Buffer */
+	u8 wait_acc_frames;
+	u16 config_counter;
+	u32 frame_number;
+	u32 buf_size;
+	u32 buf_alloc_size;
+	int dma_ch;
+	unsigned long event_type;
+	struct ispstat_buffer *buf;
+	struct ispstat_buffer *active_buf;
+	struct ispstat_buffer *locked_buf;
+};
+
+struct ispstat_generic_config {
+	/*
+	 * Fields must be in the same order as in:
+	 *  - isph3a_aewb_config
+	 *  - isph3a_af_config
+	 *  - isphist_config
+	 */
+	u32 buf_size;
+	u16 config_counter;
+};
+
+int omap3isp_stat_config(struct ispstat *stat, void *new_conf);
+int omap3isp_stat_request_statistics(struct ispstat *stat,
+				     struct omap3isp_stat_data *data);
+int omap3isp_stat_init(struct ispstat *stat, const char *name,
+		       const struct v4l2_subdev_ops *sd_ops);
+void omap3isp_stat_free(struct ispstat *stat);
+int omap3isp_stat_subscribe_event(struct v4l2_subdev *subdev,
+				  struct v4l2_fh *fh,
+				  struct v4l2_event_subscription *sub);
+int omap3isp_stat_unsubscribe_event(struct v4l2_subdev *subdev,
+				    struct v4l2_fh *fh,
+				    struct v4l2_event_subscription *sub);
+int omap3isp_stat_s_stream(struct v4l2_subdev *subdev, int enable);
+
+int omap3isp_stat_busy(struct ispstat *stat);
+int omap3isp_stat_pcr_busy(struct ispstat *stat);
+void omap3isp_stat_suspend(struct ispstat *stat);
+void omap3isp_stat_resume(struct ispstat *stat);
+int omap3isp_stat_enable(struct ispstat *stat, u8 enable);
+void omap3isp_stat_sbl_overflow(struct ispstat *stat);
+void omap3isp_stat_isr(struct ispstat *stat);
+void omap3isp_stat_isr_frame_sync(struct ispstat *stat);
+void omap3isp_stat_dma_isr(struct ispstat *stat);
+int omap3isp_stat_register_entities(struct ispstat *stat,
+				    struct v4l2_device *vdev);
+void omap3isp_stat_unregister_entities(struct ispstat *stat);
+
+#endif /* OMAP3_ISP_STAT_H */