diff --git a/drivers/media/i2c/mt9t112.c b/drivers/media/i2c/mt9t112.c new file mode 100644 index 0000000000000000000000000000000000000000..297d22ebcb188d1f43eb5cd987d847cfedf76456 --- /dev/null +++ b/drivers/media/i2c/mt9t112.c @@ -0,0 +1,1163 @@ +/* + * mt9t112 Camera Driver + * + * Copyright (C) 2009 Renesas Solutions Corp. + * Kuninori Morimoto + * + * Based on ov772x driver, mt9m111 driver, + * + * Copyright (C) 2008 Kuninori Morimoto + * Copyright (C) 2008, Robert Jarzmik + * Copyright 2006-7 Jonathan Corbet + * Copyright (C) 2008 Magnus Damm + * Copyright (C) 2008, Guennadi Liakhovetski + * + * 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 +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +/* you can check PLL/clock info */ +/* #define EXT_CLOCK 24000000 */ + +/************************************************************************ + macro +************************************************************************/ +/* + * frame size + */ +#define MAX_WIDTH 2048 +#define MAX_HEIGHT 1536 + +/* + * 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_format { + u32 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 v4l2_rect frame; + struct v4l2_clk *clk; + const struct mt9t112_format *format; + int num_formats; + u32 flags; +/* for flags */ +#define INIT_DONE (1 << 0) +#define PCLK_RISING (1 << 1) +}; + +/************************************************************************ + supported format +************************************************************************/ + +static const struct mt9t112_format mt9t112_cfmts[] = { + { + .code = MEDIA_BUS_FMT_UYVY8_2X8, + .colorspace = V4L2_COLORSPACE_SRGB, + .fmt = 1, + .order = 0, + }, { + .code = MEDIA_BUS_FMT_VYUY8_2X8, + .colorspace = V4L2_COLORSPACE_SRGB, + .fmt = 1, + .order = 1, + }, { + .code = MEDIA_BUS_FMT_YUYV8_2X8, + .colorspace = V4L2_COLORSPACE_SRGB, + .fmt = 1, + .order = 2, + }, { + .code = MEDIA_BUS_FMT_YVYU8_2X8, + .colorspace = V4L2_COLORSPACE_SRGB, + .fmt = 1, + .order = 3, + }, { + .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE, + .colorspace = V4L2_COLORSPACE_SRGB, + .fmt = 8, + .order = 2, + }, { + .code = MEDIA_BUS_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_dbg(&client->dev, "EXTCLK : %10u K %s\n", ext, enable); + + vco = 2 * m * ext / (n+1); + enable = ((384000 > vco) || (768000 < vco)) ? "X" : ""; + dev_dbg(&client->dev, "VCO : %10u K %s\n", vco, enable); + + clk = vco / (p1+1) / (p2+1); + enable = (96000 < clk) ? "X" : ""; + dev_dbg(&client->dev, "PIXCLK : %10u K %s\n", clk, enable); + + clk = vco / (p3+1); + enable = (768000 < clk) ? "X" : ""; + dev_dbg(&client->dev, "MIPICLK : %10u K %s\n", clk, enable); + + clk = vco / (p6+1); + enable = (96000 < clk) ? "X" : ""; + dev_dbg(&client->dev, "MCU CLK : %10u K %s\n", clk, enable); + + clk = vco / (p5+1); + enable = (54000 < clk) ? "X" : ""; + dev_dbg(&client->dev, "SOC CLK : %10u K %s\n", clk, enable); + + clk = vco / (p4+1); + enable = (70000 < clk) ? "X" : ""; + dev_dbg(&client->dev, "Sensor CLK : %10u K %s\n", clk, enable); + + clk = vco / (p7+1); + dev_dbg(&client->dev, "External sensor : %10u K\n", clk); + + clk = ext / (n+1); + enable = ((2000 > clk) || (24000 < clk)) ? "X" : ""; + dev_dbg(&client->dev, "PFD : %10u K %s\n", clk, enable); + + return 0; +} +#endif + +static void mt9t112_frame_check(u32 *width, u32 *height, u32 *left, u32 *top) +{ + soc_camera_limit_side(left, width, 0, 0, MAX_WIDTH); + soc_camera_limit_side(top, height, 0, 0, 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, 0x0016, 0x0400); /* JPEG initialization workaround */ + 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; +} + +/************************************************************************ + v4l2_subdev_core_ops +************************************************************************/ + +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int mt9t112_g_register(struct v4l2_subdev *sd, + struct v4l2_dbg_register *reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + 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, + const struct v4l2_dbg_register *reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + int ret; + + mt9t112_reg_write(ret, client, reg->reg, reg->val); + + return ret; +} +#endif + +static int mt9t112_s_power(struct v4l2_subdev *sd, int on) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); + struct mt9t112_priv *priv = to_mt9t112(client); + + return soc_camera_set_power(&client->dev, ssdd, priv->clk, on); +} + +static const struct v4l2_subdev_core_ops mt9t112_subdev_core_ops = { +#ifdef CONFIG_VIDEO_ADV_DEBUG + .g_register = mt9t112_g_register, + .s_register = mt9t112_s_register, +#endif + .s_power = mt9t112_s_power, +}; + + +/************************************************************************ + v4l2_subdev_video_ops +************************************************************************/ +static int mt9t112_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + 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 = PCLK_RISING & priv->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 mt9t112_priv *priv, + const struct v4l2_rect *rect, + u32 code) +{ + int i; + + /* + * get color format + */ + for (i = 0; i < priv->num_formats; i++) + if (mt9t112_cfmts[i].code == code) + break; + + if (i == priv->num_formats) + return -EINVAL; + + priv->frame = *rect; + + /* + * frame size check + */ + mt9t112_frame_check(&priv->frame.width, &priv->frame.height, + &priv->frame.left, &priv->frame.top); + + priv->format = mt9t112_cfmts + i; + + return 0; +} + +static int mt9t112_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9t112_priv *priv = to_mt9t112(client); + + if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) + return -EINVAL; + + switch (sel->target) { + case V4L2_SEL_TGT_CROP_BOUNDS: + sel->r.left = 0; + sel->r.top = 0; + sel->r.width = MAX_WIDTH; + sel->r.height = MAX_HEIGHT; + return 0; + case V4L2_SEL_TGT_CROP_DEFAULT: + sel->r.left = 0; + sel->r.top = 0; + sel->r.width = VGA_WIDTH; + sel->r.height = VGA_HEIGHT; + return 0; + case V4L2_SEL_TGT_CROP: + sel->r = priv->frame; + return 0; + default: + return -EINVAL; + } +} + +static int mt9t112_set_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9t112_priv *priv = to_mt9t112(client); + const struct v4l2_rect *rect = &sel->r; + + if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE || + sel->target != V4L2_SEL_TGT_CROP) + return -EINVAL; + + return mt9t112_set_params(priv, rect, priv->format->code); +} + +static int mt9t112_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *format) +{ + struct v4l2_mbus_framefmt *mf = &format->format; + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9t112_priv *priv = to_mt9t112(client); + + if (format->pad) + return -EINVAL; + + mf->width = priv->frame.width; + mf->height = priv->frame.height; + mf->colorspace = priv->format->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 = v4l2_get_subdevdata(sd); + struct mt9t112_priv *priv = to_mt9t112(client); + struct v4l2_rect rect = { + .width = mf->width, + .height = mf->height, + .left = priv->frame.left, + .top = priv->frame.top, + }; + int ret; + + ret = mt9t112_set_params(priv, &rect, mf->code); + + if (!ret) + mf->colorspace = priv->format->colorspace; + + return ret; +} + +static int mt9t112_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *format) +{ + struct v4l2_mbus_framefmt *mf = &format->format; + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9t112_priv *priv = to_mt9t112(client); + unsigned int top, left; + int i; + + if (format->pad) + return -EINVAL; + + for (i = 0; i < priv->num_formats; i++) + if (mt9t112_cfmts[i].code == mf->code) + break; + + if (i == priv->num_formats) { + mf->code = MEDIA_BUS_FMT_UYVY8_2X8; + mf->colorspace = V4L2_COLORSPACE_JPEG; + } else { + mf->colorspace = mt9t112_cfmts[i].colorspace; + } + + mt9t112_frame_check(&mf->width, &mf->height, &left, &top); + + mf->field = V4L2_FIELD_NONE; + + if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) + return mt9t112_s_fmt(sd, mf); + cfg->try_fmt = *mf; + return 0; +} + +static int mt9t112_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9t112_priv *priv = to_mt9t112(client); + + if (code->pad || code->index >= priv->num_formats) + return -EINVAL; + + code->code = mt9t112_cfmts[code->index].code; + + return 0; +} + +static int mt9t112_g_mbus_config(struct v4l2_subdev *sd, + struct v4l2_mbus_config *cfg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); + + cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_VSYNC_ACTIVE_HIGH | + V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_DATA_ACTIVE_HIGH | + V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING; + cfg->type = V4L2_MBUS_PARALLEL; + cfg->flags = soc_camera_apply_board_flags(ssdd, cfg); + + return 0; +} + +static int mt9t112_s_mbus_config(struct v4l2_subdev *sd, + const struct v4l2_mbus_config *cfg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); + struct mt9t112_priv *priv = to_mt9t112(client); + + if (soc_camera_apply_board_flags(ssdd, cfg) & V4L2_MBUS_PCLK_SAMPLE_RISING) + priv->flags |= PCLK_RISING; + + return 0; +} + +static const struct v4l2_subdev_video_ops mt9t112_subdev_video_ops = { + .s_stream = mt9t112_s_stream, + .g_mbus_config = mt9t112_g_mbus_config, + .s_mbus_config = mt9t112_s_mbus_config, +}; + +static const struct v4l2_subdev_pad_ops mt9t112_subdev_pad_ops = { + .enum_mbus_code = mt9t112_enum_mbus_code, + .get_selection = mt9t112_get_selection, + .set_selection = mt9t112_set_selection, + .get_fmt = mt9t112_get_fmt, + .set_fmt = mt9t112_set_fmt, +}; + +/************************************************************************ + i2c driver +************************************************************************/ +static const struct v4l2_subdev_ops mt9t112_subdev_ops = { + .core = &mt9t112_subdev_core_ops, + .video = &mt9t112_subdev_video_ops, + .pad = &mt9t112_subdev_pad_ops, +}; + +static int mt9t112_camera_probe(struct i2c_client *client) +{ + struct mt9t112_priv *priv = to_mt9t112(client); + const char *devname; + int chipid; + int ret; + + ret = mt9t112_s_power(&priv->subdev, 1); + if (ret < 0) + return ret; + + /* + * check and show chip ID + */ + mt9t112_reg_read(chipid, client, 0x0000); + + switch (chipid) { + case 0x2680: + devname = "mt9t111"; + priv->num_formats = 1; + break; + case 0x2682: + devname = "mt9t112"; + priv->num_formats = ARRAY_SIZE(mt9t112_cfmts); + break; + default: + dev_err(&client->dev, "Product ID error %04x\n", chipid); + ret = -ENODEV; + goto done; + } + + dev_info(&client->dev, "%s chip ID %04x\n", devname, chipid); + +done: + mt9t112_s_power(&priv->subdev, 0); + return ret; +} + +static int mt9t112_probe(struct i2c_client *client, + const struct i2c_device_id *did) +{ + struct mt9t112_priv *priv; + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); + struct v4l2_rect rect = { + .width = VGA_WIDTH, + .height = VGA_HEIGHT, + .left = (MAX_WIDTH - VGA_WIDTH) / 2, + .top = (MAX_HEIGHT - VGA_HEIGHT) / 2, + }; + int ret; + + if (!ssdd || !ssdd->drv_priv) { + dev_err(&client->dev, "mt9t112: missing platform data!\n"); + return -EINVAL; + } + + priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->info = ssdd->drv_priv; + + v4l2_i2c_subdev_init(&priv->subdev, client, &mt9t112_subdev_ops); + + priv->clk = v4l2_clk_get(&client->dev, "mclk"); + if (IS_ERR(priv->clk)) + return PTR_ERR(priv->clk); + + ret = mt9t112_camera_probe(client); + + /* Cannot fail: using the default supported pixel code */ + if (!ret) + mt9t112_set_params(priv, &rect, MEDIA_BUS_FMT_UYVY8_2X8); + else + v4l2_clk_put(priv->clk); + + return ret; +} + +static int mt9t112_remove(struct i2c_client *client) +{ + struct mt9t112_priv *priv = to_mt9t112(client); + + v4l2_clk_put(priv->clk); + 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_i2c_driver(mt9t112_i2c_driver); + +MODULE_DESCRIPTION("SoC Camera driver for mt9t112"); +MODULE_AUTHOR("Kuninori Morimoto"); +MODULE_LICENSE("GPL v2");