[media] omap3isp: CCDC, preview engine and resizer

The OMAP3 ISP CCDC, preview engine and resizer entities perform image
processing and scaling.

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, 219 insertions, 0 deletions

diff --git a/drivers/media/video/omap3isp/ispccdc.h b/drivers/media/video/omap3isp/ispccdc.h
new file mode 100644
index 000000000000..d403af5d31d2
--- /dev/null
+++ b/drivers/media/video/omap3isp/ispccdc.h
@@ -0,0 +1,219 @@
+/*
+ * ispccdc.h
+ *
+ * TI OMAP3 ISP - CCDC module
+ *
+ * Copyright (C) 2009-2010 Nokia Corporation
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contacts: 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_CCDC_H
+#define OMAP3_ISP_CCDC_H
+
+#include <linux/omap3isp.h>
+#include <linux/workqueue.h>
+
+#include "ispvideo.h"
+
+enum ccdc_input_entity {
+        CCDC_INPUT_NONE,
+        CCDC_INPUT_PARALLEL,
+        CCDC_INPUT_CSI2A,
+        CCDC_INPUT_CCP2B,
+        CCDC_INPUT_CSI2C
+};
+
+#define CCDC_OUTPUT_MEMORY      (1 << 0)
+#define CCDC_OUTPUT_PREVIEW     (1 << 1)
+#define CCDC_OUTPUT_RESIZER     (1 << 2)
+
+#define OMAP3ISP_CCDC_NEVENTS   16
+
+/*
+ * struct ispccdc_syncif - Structure for Sync Interface between sensor and CCDC
+ * @ccdc_mastermode: Master mode. 1 - Master, 0 - Slave.
+ * @fldstat: Field state. 0 - Odd Field, 1 - Even Field.
+ * @datsz: Data size.
+ * @fldmode: 0 - Progressive, 1 - Interlaced.
+ * @datapol: 0 - Positive, 1 - Negative.
+ * @fldpol: 0 - Positive, 1 - Negative.
+ * @hdpol: 0 - Positive, 1 - Negative.
+ * @vdpol: 0 - Positive, 1 - Negative.
+ * @fldout: 0 - Input, 1 - Output.
+ * @hs_width: Width of the Horizontal Sync pulse, used for HS/VS Output.
+ * @vs_width: Width of the Vertical Sync pulse, used for HS/VS Output.
+ * @ppln: Number of pixels per line, used for HS/VS Output.
+ * @hlprf: Number of half lines per frame, used for HS/VS Output.
+ * @bt_r656_en: 1 - Enable ITU-R BT656 mode, 0 - Sync mode.
+ */
+struct ispccdc_syncif {
+        u8 ccdc_mastermode;
+        u8 fldstat;
+        u8 datsz;
+        u8 fldmode;
+        u8 datapol;
+        u8 fldpol;
+        u8 hdpol;
+        u8 vdpol;
+        u8 fldout;
+        u8 hs_width;
+        u8 vs_width;
+        u8 ppln;
+        u8 hlprf;
+        u8 bt_r656_en;
+};
+
+/*
+ * struct ispccdc_vp - Structure for Video Port parameters
+ * @pixelclk: Input pixel clock in Hz
+ */
+struct ispccdc_vp {
+        unsigned int pixelclk;
+};
+
+enum ispccdc_lsc_state {
+        LSC_STATE_STOPPED = 0,
+        LSC_STATE_STOPPING = 1,
+        LSC_STATE_RUNNING = 2,
+        LSC_STATE_RECONFIG = 3,
+};
+
+struct ispccdc_lsc_config_req {
+        struct list_head list;
+        struct omap3isp_ccdc_lsc_config config;
+        unsigned char enable;
+        u32 table;
+        struct iovm_struct *iovm;
+};
+
+/*
+ * ispccdc_lsc - CCDC LSC parameters
+ * @update_config: Set when user changes config
+ * @request_enable: Whether LSC is requested to be enabled
+ * @config: LSC config set by user
+ * @update_table: Set when user provides a new LSC table to table_new
+ * @table_new: LSC table set by user, ISP address
+ * @table_inuse: LSC table currently in use, ISP address
+ */
+struct ispccdc_lsc {
+        enum ispccdc_lsc_state state;
+        struct work_struct table_work;
+
+        /* LSC queue of configurations */
+        spinlock_t req_lock;
+        struct ispccdc_lsc_config_req *request; /* requested configuration */
+        struct ispccdc_lsc_config_req *active;  /* active configuration */
+        struct list_head free_queue;    /* configurations for freeing */
+};
+
+#define CCDC_STOP_NOT_REQUESTED         0x00
+#define CCDC_STOP_REQUEST               0x01
+#define CCDC_STOP_EXECUTED              (0x02 | CCDC_STOP_REQUEST)
+#define CCDC_STOP_CCDC_FINISHED         0x04
+#define CCDC_STOP_LSC_FINISHED          0x08
+#define CCDC_STOP_FINISHED              \
+        (CCDC_STOP_EXECUTED | CCDC_STOP_CCDC_FINISHED | CCDC_STOP_LSC_FINISHED)
+
+#define CCDC_EVENT_VD1                  0x10
+#define CCDC_EVENT_VD0                  0x20
+#define CCDC_EVENT_LSC_DONE             0x40
+
+/* Sink and source CCDC pads */
+#define CCDC_PAD_SINK                   0
+#define CCDC_PAD_SOURCE_OF              1
+#define CCDC_PAD_SOURCE_VP              2
+#define CCDC_PADS_NUM                   3
+
+/*
+ * struct isp_ccdc_device - Structure for the CCDC module to store its own
+ *                          information
+ * @subdev: V4L2 subdevice
+ * @pads: Sink and source media entity pads
+ * @formats: Active video formats
+ * @input: Active input
+ * @output: Active outputs
+ * @video_out: Output video node
+ * @error: A hardware error occured during capture
+ * @alaw: A-law compression enabled (1) or disabled (0)
+ * @lpf: Low pass filter enabled (1) or disabled (0)
+ * @obclamp: Optical-black clamp enabled (1) or disabled (0)
+ * @fpc_en: Faulty pixels correction enabled (1) or disabled (0)
+ * @blcomp: Black level compensation configuration
+ * @clamp: Optical-black or digital clamp configuration
+ * @fpc: Faulty pixels correction configuration
+ * @lsc: Lens shading compensation configuration
+ * @update: Bitmask of controls to update during the next interrupt
+ * @shadow_update: Controls update in progress by userspace
+ * @syncif: Interface synchronization configuration
+ * @vpcfg: Video port configuration
+ * @underrun: A buffer underrun occured and a new buffer has been queued
+ * @state: Streaming state
+ * @lock: Serializes shadow_update with interrupt handler
+ * @wait: Wait queue used to stop the module
+ * @stopping: Stopping state
+ * @ioctl_lock: Serializes ioctl calls and LSC requests freeing
+ */
+struct isp_ccdc_device {
+        struct v4l2_subdev subdev;
+        struct media_pad pads[CCDC_PADS_NUM];
+        struct v4l2_mbus_framefmt formats[CCDC_PADS_NUM];
+
+        enum ccdc_input_entity input;
+        unsigned int output;
+        struct isp_video video_out;
+        unsigned int error;
+
+        unsigned int alaw:1,
+                     lpf:1,
+                     obclamp:1,
+                     fpc_en:1;
+        struct omap3isp_ccdc_blcomp blcomp;
+        struct omap3isp_ccdc_bclamp clamp;
+        struct omap3isp_ccdc_fpc fpc;
+        struct ispccdc_lsc lsc;
+        unsigned int update;
+        unsigned int shadow_update;
+
+        struct ispccdc_syncif syncif;
+        struct ispccdc_vp vpcfg;
+
+        unsigned int underrun:1;
+        enum isp_pipeline_stream_state state;
+        spinlock_t lock;
+        wait_queue_head_t wait;
+        unsigned int stopping;
+        struct mutex ioctl_lock;
+};
+
+struct isp_device;
+
+int omap3isp_ccdc_init(struct isp_device *isp);
+void omap3isp_ccdc_cleanup(struct isp_device *isp);
+int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc,
+        struct v4l2_device *vdev);
+void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc);
+
+int omap3isp_ccdc_busy(struct isp_ccdc_device *isp_ccdc);
+int omap3isp_ccdc_isr(struct isp_ccdc_device *isp_ccdc, u32 events);
+void omap3isp_ccdc_restore_context(struct isp_device *isp);
+void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc,
+        unsigned int *max_rate);
+
+#endif  /* OMAP3_ISP_CCDC_H */