V4L/DVB (13670): soc-camera: Add mt9t112 camera driver

 create mode 100644 drivers/media/video/mt9t112.c
 create mode 100644 include/media/mt9t112.h

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 1177 insertions, 0 deletions

diff --git a/drivers/media/video/mt9t112.c b/drivers/media/video/mt9t112.c
new file mode 100644
index 000000000000..fc4dd6045720
--- /dev/null
+++ b/drivers/media/video/mt9t112.c
@@ -0,0 +1,1177 @@
+/*
+ * mt9t112 Camera Driver
+ *
+ * Copyright (C) 2009 Renesas Solutions Corp.
+ * Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ *
+ * Based on ov772x driver, mt9m111 driver,
+ *
+ * Copyright (C) 2008 Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ * Copyright (C) 2008, Robert Jarzmik <robert.jarzmik@free.fr>
+ * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
+ * Copyright (C) 2008 Magnus Damm
+ * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
+ *
+ * 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.
+ */
+
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+
+#include <media/mt9t112.h>
+#include <media/soc_camera.h>
+#include <media/soc_mediabus.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-common.h>
+
+/* you can check PLL/clock info */
+/* #define EXT_CLOCK 24000000 */
+
+/************************************************************************
+
+
+                        macro
+
+
+************************************************************************/
+/*
+ * frame size
+ */
+#define MAX_WIDTH   2048
+#define MAX_HEIGHT  1536
+
+#define VGA_WIDTH   640
+#define VGA_HEIGHT  480
+
+/*
+ * macro of read/write
+ */
+#define ECHECKER(ret, x)                \
+        do {                            \
+                (ret) = (x);            \
+                if ((ret) < 0)          \
+                        return (ret);   \
+        } while (0)
+
+#define mt9t112_reg_write(ret, client, a, b) \
+        ECHECKER(ret, __mt9t112_reg_write(client, a, b))
+#define mt9t112_mcu_write(ret, client, a, b) \
+        ECHECKER(ret, __mt9t112_mcu_write(client, a, b))
+
+#define mt9t112_reg_mask_set(ret, client, a, b, c) \
+        ECHECKER(ret, __mt9t112_reg_mask_set(client, a, b, c))
+#define mt9t112_mcu_mask_set(ret, client, a, b, c) \
+        ECHECKER(ret, __mt9t112_mcu_mask_set(client, a, b, c))
+
+#define mt9t112_reg_read(ret, client, a) \
+        ECHECKER(ret, __mt9t112_reg_read(client, a))
+
+/*
+ * Logical address
+ */
+#define _VAR(id, offset, base)  (base | (id & 0x1f) << 10 | (offset & 0x3ff))
+#define VAR(id, offset)  _VAR(id, offset, 0x0000)
+#define VAR8(id, offset) _VAR(id, offset, 0x8000)
+
+/************************************************************************
+
+
+                        struct
+
+
+************************************************************************/
+struct mt9t112_frame_size {
+        u16 width;
+        u16 height;
+};
+
+struct mt9t112_format {
+        enum v4l2_mbus_pixelcode code;
+        enum v4l2_colorspace colorspace;
+        u16 fmt;
+        u16 order;
+};
+
+struct mt9t112_priv {
+        struct v4l2_subdev               subdev;
+        struct mt9t112_camera_info      *info;
+        struct i2c_client               *client;
+        struct soc_camera_device         icd;
+        struct mt9t112_frame_size        frame;
+        const struct mt9t112_format     *format;
+        int                              model;
+        u32                              flags;
+/* for flags */
+#define INIT_DONE  (1<<0)
+};
+
+/************************************************************************
+
+
+                        supported format
+
+
+************************************************************************/
+
+static const struct mt9t112_format mt9t112_cfmts[] = {
+        {
+                .code           = V4L2_MBUS_FMT_YUYV8_2X8_BE,
+                .colorspace     = V4L2_COLORSPACE_JPEG,
+                .fmt            = 1,
+                .order          = 0,
+        }, {
+                .code           = V4L2_MBUS_FMT_YVYU8_2X8_BE,
+                .colorspace     = V4L2_COLORSPACE_JPEG,
+                .fmt            = 1,
+                .order          = 1,
+        }, {
+                .code           = V4L2_MBUS_FMT_YUYV8_2X8_LE,
+                .colorspace     = V4L2_COLORSPACE_JPEG,
+                .fmt            = 1,
+                .order          = 2,
+        }, {
+                .code           = V4L2_MBUS_FMT_YVYU8_2X8_LE,
+                .colorspace     = V4L2_COLORSPACE_JPEG,
+                .fmt            = 1,
+                .order          = 3,
+        }, {
+                .code           = V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE,
+                .colorspace     = V4L2_COLORSPACE_SRGB,
+                .fmt            = 8,
+                .order          = 2,
+        }, {
+                .code           = V4L2_MBUS_FMT_RGB565_2X8_LE,
+                .colorspace     = V4L2_COLORSPACE_SRGB,
+                .fmt            = 4,
+                .order          = 2,
+        },
+};
+
+/************************************************************************
+
+
+                        general function
+
+
+************************************************************************/
+static struct mt9t112_priv *to_mt9t112(const struct i2c_client *client)
+{
+        return container_of(i2c_get_clientdata(client),
+                            struct mt9t112_priv,
+                            subdev);
+}
+
+static int __mt9t112_reg_read(const struct i2c_client *client, u16 command)
+{
+        struct i2c_msg msg[2];
+        u8 buf[2];
+        int ret;
+
+        command = swab16(command);
+
+        msg[0].addr  = client->addr;
+        msg[0].flags = 0;
+        msg[0].len   = 2;
+        msg[0].buf   = (u8 *)&command;
+
+        msg[1].addr  = client->addr;
+        msg[1].flags = I2C_M_RD;
+        msg[1].len   = 2;
+        msg[1].buf   = buf;
+
+        /*
+         * if return value of this function is < 0,
+         * it mean error.
+         * else, under 16bit is valid data.
+         */
+        ret = i2c_transfer(client->adapter, msg, 2);
+        if (ret < 0)
+                return ret;
+
+        memcpy(&ret, buf, 2);
+        return swab16(ret);
+}
+
+static int __mt9t112_reg_write(const struct i2c_client *client,
+                               u16 command, u16 data)
+{
+        struct i2c_msg msg;
+        u8 buf[4];
+        int ret;
+
+        command = swab16(command);
+        data = swab16(data);
+
+        memcpy(buf + 0, &command, 2);
+        memcpy(buf + 2, &data,    2);
+
+        msg.addr  = client->addr;
+        msg.flags = 0;
+        msg.len   = 4;
+        msg.buf   = buf;
+
+        /*
+         * i2c_transfer return message length,
+         * but this function should return 0 if correct case
+         */
+        ret = i2c_transfer(client->adapter, &msg, 1);
+        if (ret >= 0)
+                ret = 0;
+
+        return ret;
+}
+
+static int __mt9t112_reg_mask_set(const struct i2c_client *client,
+                                  u16  command,
+                                  u16  mask,
+                                  u16  set)
+{
+        int val = __mt9t112_reg_read(client, command);
+        if (val < 0)
+                return val;
+
+        val &= ~mask;
+        val |= set & mask;
+
+        return __mt9t112_reg_write(client, command, val);
+}
+
+/* mcu access */
+static int __mt9t112_mcu_read(const struct i2c_client *client, u16 command)
+{
+        int ret;
+
+        ret = __mt9t112_reg_write(client, 0x098E, command);
+        if (ret < 0)
+                return ret;
+
+        return __mt9t112_reg_read(client, 0x0990);
+}
+
+static int __mt9t112_mcu_write(const struct i2c_client *client,
+                               u16 command, u16 data)
+{
+        int ret;
+
+        ret = __mt9t112_reg_write(client, 0x098E, command);
+        if (ret < 0)
+                return ret;
+
+        return __mt9t112_reg_write(client, 0x0990, data);
+}
+
+static int __mt9t112_mcu_mask_set(const struct i2c_client *client,
+                                  u16  command,
+                                  u16  mask,
+                                  u16  set)
+{
+        int val = __mt9t112_mcu_read(client, command);
+        if (val < 0)
+                return val;
+
+        val &= ~mask;
+        val |= set & mask;
+
+        return __mt9t112_mcu_write(client, command, val);
+}
+
+static int mt9t112_reset(const struct i2c_client *client)
+{
+        int ret;
+
+        mt9t112_reg_mask_set(ret, client, 0x001a, 0x0001, 0x0001);
+        msleep(1);
+        mt9t112_reg_mask_set(ret, client, 0x001a, 0x0001, 0x0000);
+
+        return ret;
+}
+
+#ifndef EXT_CLOCK
+#define CLOCK_INFO(a, b)
+#else
+#define CLOCK_INFO(a, b) mt9t112_clock_info(a, b)
+static int mt9t112_clock_info(const struct i2c_client *client, u32 ext)
+{
+        int m, n, p1, p2, p3, p4, p5, p6, p7;
+        u32 vco, clk;
+        char *enable;
+
+        ext /= 1000; /* kbyte order */
+
+        mt9t112_reg_read(n, client, 0x0012);
+        p1 = n & 0x000f;
+        n = n >> 4;
+        p2 = n & 0x000f;
+        n = n >> 4;
+        p3 = n & 0x000f;
+
+        mt9t112_reg_read(n, client, 0x002a);
+        p4 = n & 0x000f;
+        n = n >> 4;
+        p5 = n & 0x000f;
+        n = n >> 4;
+        p6 = n & 0x000f;
+
+        mt9t112_reg_read(n, client, 0x002c);
+        p7 = n & 0x000f;
+
+        mt9t112_reg_read(n, client, 0x0010);
+        m = n & 0x00ff;
+        n = (n >> 8) & 0x003f;
+
+        enable = ((6000 > ext) || (54000 < ext)) ? "X" : "";
+        dev_info(&client->dev, "EXTCLK          : %10u K %s\n", ext, enable);
+
+        vco = 2 * m * ext / (n+1);
+        enable = ((384000 > vco) || (768000 < vco)) ? "X" : "";
+        dev_info(&client->dev, "VCO             : %10u K %s\n", vco, enable);
+
+        clk = vco / (p1+1) / (p2+1);
+        enable = (96000 < clk) ? "X" : "";
+        dev_info(&client->dev, "PIXCLK          : %10u K %s\n", clk, enable);
+
+        clk = vco / (p3+1);
+        enable = (768000 < clk) ? "X" : "";
+        dev_info(&client->dev, "MIPICLK         : %10u K %s\n", clk, enable);
+
+        clk = vco / (p6+1);
+        enable = (96000 < clk) ? "X" : "";
+        dev_info(&client->dev, "MCU CLK         : %10u K %s\n", clk, enable);
+
+        clk = vco / (p5+1);
+        enable = (54000 < clk) ? "X" : "";
+        dev_info(&client->dev, "SOC CLK         : %10u K %s\n", clk, enable);
+
+        clk = vco / (p4+1);
+        enable = (70000 < clk) ? "X" : "";
+        dev_info(&client->dev, "Sensor CLK      : %10u K %s\n", clk, enable);
+
+        clk = vco / (p7+1);
+        dev_info(&client->dev, "External sensor : %10u K\n", clk);
+
+        clk = ext / (n+1);
+        enable = ((2000 > clk) || (24000 < clk)) ? "X" : "";
+        dev_info(&client->dev, "PFD             : %10u K %s\n", clk, enable);
+
+        return 0;
+}
+#endif
+
+static void mt9t112_frame_check(u32 *width, u32 *height)
+{
+        if (*width > MAX_WIDTH)
+                *width = MAX_WIDTH;
+
+        if (*height > MAX_HEIGHT)
+                *height = MAX_HEIGHT;
+}
+
+static int mt9t112_set_a_frame_size(const struct i2c_client *client,
+                                   u16 width,
+                                   u16 height)
+{
+        int ret;
+        u16 wstart = (MAX_WIDTH - width) / 2;
+        u16 hstart = (MAX_HEIGHT - height) / 2;
+
+        /* (Context A) Image Width/Height */
+        mt9t112_mcu_write(ret, client, VAR(26, 0), width);
+        mt9t112_mcu_write(ret, client, VAR(26, 2), height);
+
+        /* (Context A) Output Width/Height */
+        mt9t112_mcu_write(ret, client, VAR(18, 43), 8 + width);
+        mt9t112_mcu_write(ret, client, VAR(18, 45), 8 + height);
+
+        /* (Context A) Start Row/Column */
+        mt9t112_mcu_write(ret, client, VAR(18, 2), 4 + hstart);
+        mt9t112_mcu_write(ret, client, VAR(18, 4), 4 + wstart);
+
+        /* (Context A) End Row/Column */
+        mt9t112_mcu_write(ret, client, VAR(18, 6), 11 + height + hstart);
+        mt9t112_mcu_write(ret, client, VAR(18, 8), 11 + width  + wstart);
+
+        mt9t112_mcu_write(ret, client, VAR8(1, 0), 0x06);
+
+        return ret;
+}
+
+static int mt9t112_set_pll_dividers(const struct i2c_client *client,
+                                    u8 m, u8 n,
+                                    u8 p1, u8 p2, u8 p3,
+                                    u8 p4, u8 p5, u8 p6,
+                                    u8 p7)
+{
+        int ret;
+        u16 val;
+
+        /* N/M */
+        val = (n << 8) |
+              (m << 0);
+        mt9t112_reg_mask_set(ret, client, 0x0010, 0x3fff, val);
+
+        /* P1/P2/P3 */
+        val = ((p3 & 0x0F) << 8) |
+              ((p2 & 0x0F) << 4) |
+              ((p1 & 0x0F) << 0);
+        mt9t112_reg_mask_set(ret, client, 0x0012, 0x0fff, val);
+
+        /* P4/P5/P6 */
+        val = (0x7         << 12) |
+              ((p6 & 0x0F) <<  8) |
+              ((p5 & 0x0F) <<  4) |
+              ((p4 & 0x0F) <<  0);
+        mt9t112_reg_mask_set(ret, client, 0x002A, 0x7fff, val);
+
+        /* P7 */
+        val = (0x1         << 12) |
+              ((p7 & 0x0F) <<  0);
+        mt9t112_reg_mask_set(ret, client, 0x002C, 0x100f, val);
+
+        return ret;
+}
+
+static int mt9t112_init_pll(const struct i2c_client *client)
+{
+        struct mt9t112_priv *priv = to_mt9t112(client);
+        int data, i, ret;
+
+        mt9t112_reg_mask_set(ret, client, 0x0014, 0x003, 0x0001);
+
+        /* PLL control: BYPASS PLL = 8517 */
+        mt9t112_reg_write(ret, client, 0x0014, 0x2145);
+
+        /* Replace these registers when new timing parameters are generated */
+        mt9t112_set_pll_dividers(client,
+                                 priv->info->divider.m,
+                                 priv->info->divider.n,
+                                 priv->info->divider.p1,
+                                 priv->info->divider.p2,
+                                 priv->info->divider.p3,
+                                 priv->info->divider.p4,
+                                 priv->info->divider.p5,
+                                 priv->info->divider.p6,
+                                 priv->info->divider.p7);
+
+        /*
+         * TEST_BYPASS  on
+         * PLL_ENABLE   on
+         * SEL_LOCK_DET on
+         * TEST_BYPASS  off
+         */
+        mt9t112_reg_write(ret, client, 0x0014, 0x2525);
+        mt9t112_reg_write(ret, client, 0x0014, 0x2527);
+        mt9t112_reg_write(ret, client, 0x0014, 0x3427);
+        mt9t112_reg_write(ret, client, 0x0014, 0x3027);
+
+        mdelay(10);
+
+        /*
+         * PLL_BYPASS off
+         * Reference clock count
+         * I2C Master Clock Divider
+         */
+        mt9t112_reg_write(ret, client, 0x0014, 0x3046);
+        mt9t112_reg_write(ret, client, 0x0022, 0x0190);
+        mt9t112_reg_write(ret, client, 0x3B84, 0x0212);
+
+        /* External sensor clock is PLL bypass */
+        mt9t112_reg_write(ret, client, 0x002E, 0x0500);
+
+        mt9t112_reg_mask_set(ret, client, 0x0018, 0x0002, 0x0002);
+        mt9t112_reg_mask_set(ret, client, 0x3B82, 0x0004, 0x0004);
+
+        /* MCU disabled */
+        mt9t112_reg_mask_set(ret, client, 0x0018, 0x0004, 0x0004);
+
+        /* out of standby */
+        mt9t112_reg_mask_set(ret, client, 0x0018, 0x0001, 0);
+
+        mdelay(50);
+
+        /*
+         * Standby Workaround
+         * Disable Secondary I2C Pads
+         */
+        mt9t112_reg_write(ret, client, 0x0614, 0x0001);
+        mdelay(1);
+        mt9t112_reg_write(ret, client, 0x0614, 0x0001);
+        mdelay(1);
+        mt9t112_reg_write(ret, client, 0x0614, 0x0001);
+        mdelay(1);
+        mt9t112_reg_write(ret, client, 0x0614, 0x0001);
+        mdelay(1);
+        mt9t112_reg_write(ret, client, 0x0614, 0x0001);
+        mdelay(1);
+        mt9t112_reg_write(ret, client, 0x0614, 0x0001);
+        mdelay(1);
+
+        /* poll to verify out of standby. Must Poll this bit */
+        for (i = 0; i < 100; i++) {
+                mt9t112_reg_read(data, client, 0x0018);
+                if (0x4000 & data)
+                        break;
+
+                mdelay(10);
+        }
+
+        return ret;
+}
+
+static int mt9t112_init_setting(const struct i2c_client *client)
+{
+
+        int ret;
+
+        /* Adaptive Output Clock (A) */
+        mt9t112_mcu_mask_set(ret, client, VAR(26, 160), 0x0040, 0x0000);
+
+        /* Read Mode (A) */
+        mt9t112_mcu_write(ret, client, VAR(18, 12), 0x0024);
+
+        /* Fine Correction (A) */
+        mt9t112_mcu_write(ret, client, VAR(18, 15), 0x00CC);
+
+        /* Fine IT Min (A) */
+        mt9t112_mcu_write(ret, client, VAR(18, 17), 0x01f1);
+
+        /* Fine IT Max Margin (A) */
+        mt9t112_mcu_write(ret, client, VAR(18, 19), 0x00fF);
+
+        /* Base Frame Lines (A) */
+        mt9t112_mcu_write(ret, client, VAR(18, 29), 0x032D);
+
+        /* Min Line Length (A) */
+        mt9t112_mcu_write(ret, client, VAR(18, 31), 0x073a);
+
+        /* Line Length (A) */
+        mt9t112_mcu_write(ret, client, VAR(18, 37), 0x07d0);
+
+        /* Adaptive Output Clock (B) */
+        mt9t112_mcu_mask_set(ret, client, VAR(27, 160), 0x0040, 0x0000);
+
+        /* Row Start (B) */
+        mt9t112_mcu_write(ret, client, VAR(18, 74), 0x004);
+
+        /* Column Start (B) */
+        mt9t112_mcu_write(ret, client, VAR(18, 76), 0x004);
+
+        /* Row End (B) */
+        mt9t112_mcu_write(ret, client, VAR(18, 78), 0x60B);
+
+        /* Column End (B) */
+        mt9t112_mcu_write(ret, client, VAR(18, 80), 0x80B);
+
+        /* Fine Correction (B) */
+        mt9t112_mcu_write(ret, client, VAR(18, 87), 0x008C);
+
+        /* Fine IT Min (B) */
+        mt9t112_mcu_write(ret, client, VAR(18, 89), 0x01F1);
+
+        /* Fine IT Max Margin (B) */
+        mt9t112_mcu_write(ret, client, VAR(18, 91), 0x00FF);
+
+        /* Base Frame Lines (B) */
+        mt9t112_mcu_write(ret, client, VAR(18, 101), 0x0668);
+
+        /* Min Line Length (B) */
+        mt9t112_mcu_write(ret, client, VAR(18, 103), 0x0AF0);
+
+        /* Line Length (B) */
+        mt9t112_mcu_write(ret, client, VAR(18, 109), 0x0AF0);
+
+        /*
+         * Flicker Dectection registers
+         * This section should be replaced whenever new Timing file is generated
+         * All the following registers need to be replaced
+         * Following registers are generated from Register Wizard but user can
+         * modify them. For detail see auto flicker detection tuning
+         */
+
+        /* FD_FDPERIOD_SELECT */
+        mt9t112_mcu_write(ret, client, VAR8(8, 5), 0x01);
+
+        /* PRI_B_CONFIG_FD_ALGO_RUN */
+        mt9t112_mcu_write(ret, client, VAR(27, 17), 0x0003);
+
+        /* PRI_A_CONFIG_FD_ALGO_RUN */
+        mt9t112_mcu_write(ret, client, VAR(26, 17), 0x0003);
+
+        /*
+         * AFD range detection tuning registers
+         */
+
+        /* search_f1_50 */
+        mt9t112_mcu_write(ret, client, VAR8(18, 165), 0x25);
+
+        /* search_f2_50 */
+        mt9t112_mcu_write(ret, client, VAR8(18, 166), 0x28);
+
+        /* search_f1_60 */
+        mt9t112_mcu_write(ret, client, VAR8(18, 167), 0x2C);
+
+        /* search_f2_60 */
+        mt9t112_mcu_write(ret, client, VAR8(18, 168), 0x2F);
+
+        /* period_50Hz (A) */
+        mt9t112_mcu_write(ret, client, VAR8(18, 68), 0xBA);
+
+        /* secret register by aptina */
+        /* period_50Hz (A MSB) */
+        mt9t112_mcu_write(ret, client, VAR8(18, 303), 0x00);
+
+        /* period_60Hz (A) */
+        mt9t112_mcu_write(ret, client, VAR8(18, 69), 0x9B);
+
+        /* secret register by aptina */
+        /* period_60Hz (A MSB) */
+        mt9t112_mcu_write(ret, client, VAR8(18, 301), 0x00);
+
+        /* period_50Hz (B) */
+        mt9t112_mcu_write(ret, client, VAR8(18, 140), 0x82);
+
+        /* secret register by aptina */
+        /* period_50Hz (B) MSB */
+        mt9t112_mcu_write(ret, client, VAR8(18, 304), 0x00);
+
+        /* period_60Hz (B) */
+        mt9t112_mcu_write(ret, client, VAR8(18, 141), 0x6D);
+
+        /* secret register by aptina */
+        /* period_60Hz (B) MSB */
+        mt9t112_mcu_write(ret, client, VAR8(18, 302), 0x00);
+
+        /* FD Mode */
+        mt9t112_mcu_write(ret, client, VAR8(8, 2), 0x10);
+
+        /* Stat_min */
+        mt9t112_mcu_write(ret, client, VAR8(8, 9), 0x02);
+
+        /* Stat_max */
+        mt9t112_mcu_write(ret, client, VAR8(8, 10), 0x03);
+
+        /* Min_amplitude */
+        mt9t112_mcu_write(ret, client, VAR8(8, 12), 0x0A);
+
+        /* RX FIFO Watermark (A) */
+        mt9t112_mcu_write(ret, client, VAR(18, 70), 0x0014);
+
+        /* RX FIFO Watermark (B) */
+        mt9t112_mcu_write(ret, client, VAR(18, 142), 0x0014);
+
+        /* MCLK: 16MHz
+         * PCLK: 73MHz
+         * CorePixCLK: 36.5 MHz
+         */
+        mt9t112_mcu_write(ret, client, VAR8(18, 0x0044), 133);
+        mt9t112_mcu_write(ret, client, VAR8(18, 0x0045), 110);
+        mt9t112_mcu_write(ret, client, VAR8(18, 0x008c), 130);
+        mt9t112_mcu_write(ret, client, VAR8(18, 0x008d), 108);
+
+        mt9t112_mcu_write(ret, client, VAR8(18, 0x00A5), 27);
+        mt9t112_mcu_write(ret, client, VAR8(18, 0x00a6), 30);
+        mt9t112_mcu_write(ret, client, VAR8(18, 0x00a7), 32);
+        mt9t112_mcu_write(ret, client, VAR8(18, 0x00a8), 35);
+
+        return ret;
+}
+
+static int mt9t112_auto_focus_setting(const struct i2c_client *client)
+{
+        int ret;
+
+        mt9t112_mcu_write(ret, client, VAR(12, 13),     0x000F);
+        mt9t112_mcu_write(ret, client, VAR(12, 23),     0x0F0F);
+        mt9t112_mcu_write(ret, client, VAR8(1, 0),      0x06);
+
+        mt9t112_reg_write(ret, client, 0x0614, 0x0000);
+
+        mt9t112_mcu_write(ret, client, VAR8(1, 0),      0x05);
+        mt9t112_mcu_write(ret, client, VAR8(12, 2),     0x02);
+        mt9t112_mcu_write(ret, client, VAR(12, 3),      0x0002);
+        mt9t112_mcu_write(ret, client, VAR(17, 3),      0x8001);
+        mt9t112_mcu_write(ret, client, VAR(17, 11),     0x0025);
+        mt9t112_mcu_write(ret, client, VAR(17, 13),     0x0193);
+        mt9t112_mcu_write(ret, client, VAR8(17, 33),    0x18);
+        mt9t112_mcu_write(ret, client, VAR8(1, 0),      0x05);
+
+        return ret;
+}
+
+static int mt9t112_auto_focus_trigger(const struct i2c_client *client)
+{
+        int ret;
+
+        mt9t112_mcu_write(ret, client, VAR8(12, 25), 0x01);
+
+        return ret;
+}
+
+static int mt9t112_init_camera(const struct i2c_client *client)
+{
+        int ret;
+
+        ECHECKER(ret, mt9t112_reset(client));
+
+        ECHECKER(ret, mt9t112_init_pll(client));
+
+        ECHECKER(ret, mt9t112_init_setting(client));
+
+        ECHECKER(ret, mt9t112_auto_focus_setting(client));
+
+        mt9t112_reg_mask_set(ret, client, 0x0018, 0x0004, 0);
+
+        /* Analog setting B */
+        mt9t112_reg_write(ret, client, 0x3084, 0x2409);
+        mt9t112_reg_write(ret, client, 0x3092, 0x0A49);
+        mt9t112_reg_write(ret, client, 0x3094, 0x4949);
+        mt9t112_reg_write(ret, client, 0x3096, 0x4950);
+
+        /*
+         * Disable adaptive clock
+         * PRI_A_CONFIG_JPEG_OB_TX_CONTROL_VAR
+         * PRI_B_CONFIG_JPEG_OB_TX_CONTROL_VAR
+         */
+        mt9t112_mcu_write(ret, client, VAR(26, 160), 0x0A2E);
+        mt9t112_mcu_write(ret, client, VAR(27, 160), 0x0A2E);
+
+        /* Configure STatus in Status_before_length Format and enable header */
+        /* PRI_B_CONFIG_JPEG_OB_TX_CONTROL_VAR */
+        mt9t112_mcu_write(ret, client, VAR(27, 144), 0x0CB4);
+
+        /* Enable JPEG in context B */
+        /* PRI_B_CONFIG_JPEG_OB_TX_CONTROL_VAR */
+        mt9t112_mcu_write(ret, client, VAR8(27, 142), 0x01);
+
+        /* Disable Dac_TXLO */
+        mt9t112_reg_write(ret, client, 0x316C, 0x350F);
+
+        /* Set max slew rates */
+        mt9t112_reg_write(ret, client, 0x1E, 0x777);
+
+        return ret;
+}
+
+/************************************************************************
+
+
+                        soc_camera_ops
+
+
+************************************************************************/
+static int mt9t112_set_bus_param(struct soc_camera_device *icd,
+                                 unsigned long  flags)
+{
+        return 0;
+}
+
+static unsigned long mt9t112_query_bus_param(struct soc_camera_device *icd)
+{
+        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
+        struct mt9t112_priv *priv = to_mt9t112(client);
+        struct soc_camera_link *icl = to_soc_camera_link(icd);
+        unsigned long flags = SOCAM_MASTER | SOCAM_VSYNC_ACTIVE_HIGH |
+                SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_DATA_ACTIVE_HIGH;
+
+        flags |= (priv->info->flags & MT9T112_FLAG_PCLK_RISING_EDGE) ?
+                SOCAM_PCLK_SAMPLE_RISING : SOCAM_PCLK_SAMPLE_FALLING;
+
+        if (priv->info->flags & MT9T112_FLAG_DATAWIDTH_8)
+                flags |= SOCAM_DATAWIDTH_8;
+        else
+                flags |= SOCAM_DATAWIDTH_10;
+
+        return soc_camera_apply_sensor_flags(icl, flags);
+}
+
+static struct soc_camera_ops mt9t112_ops = {
+        .set_bus_param          = mt9t112_set_bus_param,
+        .query_bus_param        = mt9t112_query_bus_param,
+};
+
+/************************************************************************
+
+
+                        v4l2_subdev_core_ops
+
+
+************************************************************************/
+static int mt9t112_g_chip_ident(struct v4l2_subdev *sd,
+                                struct v4l2_dbg_chip_ident *id)
+{
+        struct i2c_client *client = sd->priv;
+        struct mt9t112_priv *priv = to_mt9t112(client);
+
+        id->ident    = priv->model;
+        id->revision = 0;
+
+        return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int mt9t112_g_register(struct v4l2_subdev *sd,
+                              struct v4l2_dbg_register *reg)
+{
+        struct i2c_client *client = sd->priv;
+        int                ret;
+
+        reg->size = 2;
+        mt9t112_reg_read(ret, client, reg->reg);
+
+        reg->val = (__u64)ret;
+
+        return 0;
+}
+
+static int mt9t112_s_register(struct v4l2_subdev *sd,
+                              struct v4l2_dbg_register *reg)
+{
+        struct i2c_client *client = sd->priv;
+        int ret;
+
+        mt9t112_reg_write(ret, client, reg->reg, reg->val);
+
+        return ret;
+}
+#endif
+
+static struct v4l2_subdev_core_ops mt9t112_subdev_core_ops = {
+        .g_chip_ident   = mt9t112_g_chip_ident,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+        .g_register     = mt9t112_g_register,
+        .s_register     = mt9t112_s_register,
+#endif
+};
+
+
+/************************************************************************
+
+
+                        v4l2_subdev_video_ops
+
+
+************************************************************************/
+static int mt9t112_s_stream(struct v4l2_subdev *sd, int enable)
+{
+        struct i2c_client *client = sd->priv;
+        struct mt9t112_priv *priv = to_mt9t112(client);
+        int ret = 0;
+
+        if (!enable) {
+                /* FIXME
+                 *
+                 * If user selected large output size,
+                 * and used it long time,
+                 * mt9t112 camera will be very warm.
+                 *
+                 * But current driver can not stop mt9t112 camera.
+                 * So, set small size here to solve this problem.
+                 */
+                mt9t112_set_a_frame_size(client, VGA_WIDTH, VGA_HEIGHT);
+                return ret;
+        }
+
+        if (!(priv->flags & INIT_DONE)) {
+                u16 param = (MT9T112_FLAG_PCLK_RISING_EDGE &
+                             priv->info->flags) ? 0x0001 : 0x0000;
+
+                ECHECKER(ret, mt9t112_init_camera(client));
+
+                /* Invert PCLK (Data sampled on falling edge of pixclk) */
+                mt9t112_reg_write(ret, client, 0x3C20, param);
+
+                mdelay(5);
+
+                priv->flags |= INIT_DONE;
+        }
+
+        mt9t112_mcu_write(ret, client, VAR(26, 7), priv->format->fmt);
+        mt9t112_mcu_write(ret, client, VAR(26, 9), priv->format->order);
+        mt9t112_mcu_write(ret, client, VAR8(1, 0), 0x06);
+
+        mt9t112_set_a_frame_size(client,
+                                 priv->frame.width,
+                                 priv->frame.height);
+
+        ECHECKER(ret, mt9t112_auto_focus_trigger(client));
+
+        dev_dbg(&client->dev, "format : %d\n", priv->format->code);
+        dev_dbg(&client->dev, "size   : %d x %d\n",
+                priv->frame.width,
+                priv->frame.height);
+
+        CLOCK_INFO(client, EXT_CLOCK);
+
+        return ret;
+}
+
+static int mt9t112_set_params(struct i2c_client *client, u32 width, u32 height,
+                              enum v4l2_mbus_pixelcode code)
+{
+        struct mt9t112_priv *priv = to_mt9t112(client);
+        int i;
+
+        priv->format = NULL;
+
+        /*
+         * frame size check
+         */
+        mt9t112_frame_check(&width, &height);
+
+        /*
+         * get color format
+         */
+        for (i = 0; i < ARRAY_SIZE(mt9t112_cfmts); i++)
+                if (mt9t112_cfmts[i].code == code)
+                        break;
+
+        if (i == ARRAY_SIZE(mt9t112_cfmts))
+                return -EINVAL;
+
+        priv->frame.width  = (u16)width;
+        priv->frame.height = (u16)height;
+
+        priv->format = mt9t112_cfmts + i;
+
+        return 0;
+}
+
+static int mt9t112_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
+{
+        a->bounds.left                  = 0;
+        a->bounds.top                   = 0;
+        a->bounds.width                 = VGA_WIDTH;
+        a->bounds.height                = VGA_HEIGHT;
+        a->defrect                      = a->bounds;
+        a->type                         = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+        a->pixelaspect.numerator        = 1;
+        a->pixelaspect.denominator      = 1;
+
+        return 0;
+}
+
+static int mt9t112_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
+{
+        a->c.left       = 0;
+        a->c.top        = 0;
+        a->c.width      = VGA_WIDTH;
+        a->c.height     = VGA_HEIGHT;
+        a->type         = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+        return 0;
+}
+
+static int mt9t112_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
+{
+        struct i2c_client *client = sd->priv;
+        struct v4l2_rect *rect = &a->c;
+
+        return mt9t112_set_params(client, rect->width, rect->height,
+                                 V4L2_MBUS_FMT_YUYV8_2X8_BE);
+}
+
+static int mt9t112_g_fmt(struct v4l2_subdev *sd,
+                         struct v4l2_mbus_framefmt *mf)
+{
+        struct i2c_client *client = sd->priv;
+        struct mt9t112_priv *priv = to_mt9t112(client);
+
+        if (!priv->format) {
+                int ret = mt9t112_set_params(client, VGA_WIDTH, VGA_HEIGHT,
+                                             V4L2_MBUS_FMT_YUYV8_2X8_BE);
+                if (ret < 0)
+                        return ret;
+        }
+
+        mf->width       = priv->frame.width;
+        mf->height      = priv->frame.height;
+        /* TODO: set colorspace */
+        mf->code        = priv->format->code;
+        mf->field       = V4L2_FIELD_NONE;
+
+        return 0;
+}
+
+static int mt9t112_s_fmt(struct v4l2_subdev *sd,
+                         struct v4l2_mbus_framefmt *mf)
+{
+        struct i2c_client *client = sd->priv;
+
+        /* TODO: set colorspace */
+        return mt9t112_set_params(client, mf->width, mf->height, mf->code);
+}
+
+static int mt9t112_try_fmt(struct v4l2_subdev *sd,
+                           struct v4l2_mbus_framefmt *mf)
+{
+        mt9t112_frame_check(&mf->width, &mf->height);
+
+        /* TODO: set colorspace */
+        mf->field = V4L2_FIELD_NONE;
+
+        return 0;
+}
+
+static int mt9t112_enum_fmt(struct v4l2_subdev *sd, int index,
+                           enum v4l2_mbus_pixelcode *code)
+{
+        if ((unsigned int)index >= ARRAY_SIZE(mt9t112_cfmts))
+                return -EINVAL;
+
+        *code = mt9t112_cfmts[index].code;
+        return 0;
+}
+
+static struct v4l2_subdev_video_ops mt9t112_subdev_video_ops = {
+        .s_stream       = mt9t112_s_stream,
+        .g_mbus_fmt     = mt9t112_g_fmt,
+        .s_mbus_fmt     = mt9t112_s_fmt,
+        .try_mbus_fmt   = mt9t112_try_fmt,
+        .cropcap        = mt9t112_cropcap,
+        .g_crop         = mt9t112_g_crop,
+        .s_crop         = mt9t112_s_crop,
+        .enum_mbus_fmt  = mt9t112_enum_fmt,
+};
+
+/************************************************************************
+
+
+                        i2c driver
+
+
+************************************************************************/
+static struct v4l2_subdev_ops mt9t112_subdev_ops = {
+        .core   = &mt9t112_subdev_core_ops,
+        .video  = &mt9t112_subdev_video_ops,
+};
+
+static int mt9t112_camera_probe(struct soc_camera_device *icd,
+                                struct i2c_client *client)
+{
+        struct mt9t112_priv *priv = to_mt9t112(client);
+        const char          *devname;
+        int                  chipid;
+
+        /*
+         * We must have a parent by now. And it cannot be a wrong one.
+         * So this entire test is completely redundant.
+         */
+        if (!icd->dev.parent ||
+            to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
+                return -ENODEV;
+
+        /*
+         * check and show chip ID
+         */
+        mt9t112_reg_read(chipid, client, 0x0000);
+
+        switch (chipid) {
+        case 0x2680:
+                devname = "mt9t111";
+                priv->model = V4L2_IDENT_MT9T111;
+                break;
+        case 0x2682:
+                devname = "mt9t112";
+                priv->model = V4L2_IDENT_MT9T112;
+                break;
+        default:
+                dev_err(&client->dev, "Product ID error %04x\n", chipid);
+                return -ENODEV;
+        }
+
+        dev_info(&client->dev, "%s chip ID %04x\n", devname, chipid);
+
+        return 0;
+}
+
+static int mt9t112_probe(struct i2c_client *client,
+                         const struct i2c_device_id *did)
+{
+        struct mt9t112_priv        *priv;
+        struct soc_camera_device   *icd = client->dev.platform_data;
+        struct soc_camera_link     *icl;
+        int                         ret;
+
+        if (!icd) {
+                dev_err(&client->dev, "mt9t112: missing soc-camera data!\n");
+                return -EINVAL;
+        }
+
+        icl = to_soc_camera_link(icd);
+        if (!icl || !icl->priv)
+                return -EINVAL;
+
+        priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+        if (!priv)
+                return -ENOMEM;
+
+        priv->info = icl->priv;
+
+        v4l2_i2c_subdev_init(&priv->subdev, client, &mt9t112_subdev_ops);
+
+        icd->ops = &mt9t112_ops;
+
+        ret = mt9t112_camera_probe(icd, client);
+        if (ret) {
+                icd->ops = NULL;
+                i2c_set_clientdata(client, NULL);
+                kfree(priv);
+        }
+
+        return ret;
+}
+
+static int mt9t112_remove(struct i2c_client *client)
+{
+        struct mt9t112_priv *priv = to_mt9t112(client);
+        struct soc_camera_device *icd = client->dev.platform_data;
+
+        icd->ops = NULL;
+        i2c_set_clientdata(client, NULL);
+        kfree(priv);
+        return 0;
+}
+
+static const struct i2c_device_id mt9t112_id[] = {
+        { "mt9t112", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, mt9t112_id);
+
+static struct i2c_driver mt9t112_i2c_driver = {
+        .driver = {
+                .name = "mt9t112",
+        },
+        .probe    = mt9t112_probe,
+        .remove   = mt9t112_remove,
+        .id_table = mt9t112_id,
+};
+
+/************************************************************************
+
+
+                        module function
+
+
+************************************************************************/
+static int __init mt9t112_module_init(void)
+{
+        return i2c_add_driver(&mt9t112_i2c_driver);
+}
+
+static void __exit mt9t112_module_exit(void)
+{
+        i2c_del_driver(&mt9t112_i2c_driver);
+}
+
+module_init(mt9t112_module_init);
+module_exit(mt9t112_module_exit);
+
+MODULE_DESCRIPTION("SoC Camera driver for mt9t112");
+MODULE_AUTHOR("Kuninori Morimoto");
+MODULE_LICENSE("GPL v2");