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path: root/drivers/media/video/mt9t112.c
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Diffstat (limited to 'drivers/media/video/mt9t112.c')
-rw-r--r--drivers/media/video/mt9t112.c1177
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");
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-15 07:16:52 +0300