1 files changed, 155 insertions, 0 deletions

diff --git a/drivers/media/i2c/m5mols/m5mols_capture.c b/drivers/media/i2c/m5mols/m5mols_capture.c
new file mode 100644
index 000000000000..cb243bd278ce
--- /dev/null
+++ b/drivers/media/i2c/m5mols/m5mols_capture.c
@@ -0,0 +1,155 @@
+
+/*
+ * The Capture code for Fujitsu M-5MOLS ISP
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ * Author: HeungJun Kim <riverful.kim@samsung.com>
+ *
+ * Copyright (C) 2009 Samsung Electronics Co., Ltd.
+ * Author: Dongsoo Nathaniel Kim <dongsoo45.kim@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+#include <media/m5mols.h>
+#include <media/s5p_fimc.h>
+
+#include "m5mols.h"
+#include "m5mols_reg.h"
+
+/**
+ * m5mols_read_rational - I2C read of a rational number
+ *
+ * Read numerator and denominator from registers @addr_num and @addr_den
+ * respectively and return the division result in @val.
+ */
+static int m5mols_read_rational(struct v4l2_subdev *sd, u32 addr_num,
+                                u32 addr_den, u32 *val)
+{
+        u32 num, den;
+
+        int ret = m5mols_read_u32(sd, addr_num, &num);
+        if (!ret)
+                ret = m5mols_read_u32(sd, addr_den, &den);
+        if (ret)
+                return ret;
+        *val = den == 0 ? 0 : num / den;
+        return ret;
+}
+
+/**
+ * m5mols_capture_info - Gather captured image information
+ *
+ * For now it gathers only EXIF information and file size.
+ */
+static int m5mols_capture_info(struct m5mols_info *info)
+{
+        struct m5mols_exif *exif = &info->cap.exif;
+        struct v4l2_subdev *sd = &info->sd;
+        int ret;
+
+        ret = m5mols_read_rational(sd, EXIF_INFO_EXPTIME_NU,
+                                   EXIF_INFO_EXPTIME_DE, &exif->exposure_time);
+        if (ret)
+                return ret;
+        ret = m5mols_read_rational(sd, EXIF_INFO_TV_NU, EXIF_INFO_TV_DE,
+                                   &exif->shutter_speed);
+        if (ret)
+                return ret;
+        ret = m5mols_read_rational(sd, EXIF_INFO_AV_NU, EXIF_INFO_AV_DE,
+                                   &exif->aperture);
+        if (ret)
+                return ret;
+        ret = m5mols_read_rational(sd, EXIF_INFO_BV_NU, EXIF_INFO_BV_DE,
+                                   &exif->brightness);
+        if (ret)
+                return ret;
+        ret = m5mols_read_rational(sd, EXIF_INFO_EBV_NU, EXIF_INFO_EBV_DE,
+                                   &exif->exposure_bias);
+        if (ret)
+                return ret;
+
+        ret = m5mols_read_u16(sd, EXIF_INFO_ISO, &exif->iso_speed);
+        if (!ret)
+                ret = m5mols_read_u16(sd, EXIF_INFO_FLASH, &exif->flash);
+        if (!ret)
+                ret = m5mols_read_u16(sd, EXIF_INFO_SDR, &exif->sdr);
+        if (!ret)
+                ret = m5mols_read_u16(sd, EXIF_INFO_QVAL, &exif->qval);
+        if (ret)
+                return ret;
+
+        if (!ret)
+                ret = m5mols_read_u32(sd, CAPC_IMAGE_SIZE, &info->cap.main);
+        if (!ret)
+                ret = m5mols_read_u32(sd, CAPC_THUMB_SIZE, &info->cap.thumb);
+        if (!ret)
+                info->cap.total = info->cap.main + info->cap.thumb;
+
+        return ret;
+}
+
+int m5mols_start_capture(struct m5mols_info *info)
+{
+        struct v4l2_subdev *sd = &info->sd;
+        int ret;
+
+        /*
+         * Synchronize the controls, set the capture frame resolution and color
+         * format. The frame capture is initiated during switching from Monitor
+         * to Capture mode.
+         */
+        ret = m5mols_set_mode(info, REG_MONITOR);
+        if (!ret)
+                ret = m5mols_restore_controls(info);
+        if (!ret)
+                ret = m5mols_write(sd, CAPP_YUVOUT_MAIN, REG_JPEG);
+        if (!ret)
+                ret = m5mols_write(sd, CAPP_MAIN_IMAGE_SIZE, info->resolution);
+        if (!ret)
+                ret = m5mols_set_mode(info, REG_CAPTURE);
+        if (!ret)
+                /* Wait until a frame is captured to ISP internal memory */
+                ret = m5mols_wait_interrupt(sd, REG_INT_CAPTURE, 2000);
+        if (ret)
+                return ret;
+
+        /*
+         * Initiate the captured data transfer to a MIPI-CSI receiver.
+         */
+        ret = m5mols_write(sd, CAPC_SEL_FRAME, 1);
+        if (!ret)
+                ret = m5mols_write(sd, CAPC_START, REG_CAP_START_MAIN);
+        if (!ret) {
+                bool captured = false;
+                unsigned int size;
+
+                /* Wait for the capture completion interrupt */
+                ret = m5mols_wait_interrupt(sd, REG_INT_CAPTURE, 2000);
+                if (!ret) {
+                        captured = true;
+                        ret = m5mols_capture_info(info);
+                }
+                size = captured ? info->cap.main : 0;
+                v4l2_dbg(1, m5mols_debug, sd, "%s: size: %d, thumb.: %d B\n",
+                         __func__, size, info->cap.thumb);
+
+                v4l2_subdev_notify(sd, S5P_FIMC_TX_END_NOTIFY, &size);
+        }
+
+        return ret;
+}