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* 'v4l_for_2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (87 commits) V4L/DVB: ivtv: Timing tweaks and code re-order to try and improve stability V4L/DVB: ivtv: Avoid accidental video standard change V4L/DVB: ivtvfb : Module load / unload fixes V4L/DVB: cx2341x: Report correct temporal setting for log-status V4L/DVB: cx18, cx23885, v4l2 doc, MAINTAINERS: Update Andy Walls' email address V4L/DVB: drivers/media: Eliminate a NULL pointer dereference V4L/DVB: dvb-core: Fix ULE decapsulation bug V4L/DVB: Bug fix: make IR work again for dm1105 V4L/DVB: media/IR: nec-decoder needs to select BITREV V4L/DVB: video/saa7134: change dprintk() to i2cdprintk() V4L/DVB: video/saa7134: remove duplicate break V4L/DVB: IR/imon: add auto-config for 0xffdc rf device V4L/DVB: IR/imon: clean up usage of bools V4L/DVB: em28xx: remove unneeded null checks V4L/DVB: ngene: remove unused #include <linux/version.h> V4L/DVB: ak881x needs slab.h V4L/DVB: FusionHDTV: Use quick reads for I2C IR device probing V4L/DVB: Technotrend S2-3200 ships with a TT 1500 remote V4L/DVB: drivers/media: Use kzalloc V4L/DVB: m920x: Select simple tuner ...
972 lines
24 KiB
C
972 lines
24 KiB
C
/*
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* Driver for MT9V022 CMOS Image Sensor from Micron
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*
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* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/videodev2.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/delay.h>
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#include <linux/log2.h>
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#include <media/v4l2-subdev.h>
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#include <media/v4l2-chip-ident.h>
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#include <media/soc_camera.h>
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/*
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* mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c
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* The platform has to define ctruct i2c_board_info objects and link to them
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* from struct soc_camera_link
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*/
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static char *sensor_type;
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module_param(sensor_type, charp, S_IRUGO);
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MODULE_PARM_DESC(sensor_type, "Sensor type: \"colour\" or \"monochrome\"");
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/* mt9v022 selected register addresses */
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#define MT9V022_CHIP_VERSION 0x00
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#define MT9V022_COLUMN_START 0x01
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#define MT9V022_ROW_START 0x02
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#define MT9V022_WINDOW_HEIGHT 0x03
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#define MT9V022_WINDOW_WIDTH 0x04
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#define MT9V022_HORIZONTAL_BLANKING 0x05
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#define MT9V022_VERTICAL_BLANKING 0x06
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#define MT9V022_CHIP_CONTROL 0x07
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#define MT9V022_SHUTTER_WIDTH1 0x08
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#define MT9V022_SHUTTER_WIDTH2 0x09
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#define MT9V022_SHUTTER_WIDTH_CTRL 0x0a
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#define MT9V022_TOTAL_SHUTTER_WIDTH 0x0b
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#define MT9V022_RESET 0x0c
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#define MT9V022_READ_MODE 0x0d
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#define MT9V022_MONITOR_MODE 0x0e
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#define MT9V022_PIXEL_OPERATION_MODE 0x0f
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#define MT9V022_LED_OUT_CONTROL 0x1b
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#define MT9V022_ADC_MODE_CONTROL 0x1c
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#define MT9V022_ANALOG_GAIN 0x35
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#define MT9V022_BLACK_LEVEL_CALIB_CTRL 0x47
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#define MT9V022_PIXCLK_FV_LV 0x74
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#define MT9V022_DIGITAL_TEST_PATTERN 0x7f
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#define MT9V022_AEC_AGC_ENABLE 0xAF
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#define MT9V022_MAX_TOTAL_SHUTTER_WIDTH 0xBD
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/* Progressive scan, master, defaults */
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#define MT9V022_CHIP_CONTROL_DEFAULT 0x188
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#define MT9V022_MAX_WIDTH 752
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#define MT9V022_MAX_HEIGHT 480
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#define MT9V022_MIN_WIDTH 48
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#define MT9V022_MIN_HEIGHT 32
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#define MT9V022_COLUMN_SKIP 1
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#define MT9V022_ROW_SKIP 4
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/* MT9V022 has only one fixed colorspace per pixelcode */
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struct mt9v022_datafmt {
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enum v4l2_mbus_pixelcode code;
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enum v4l2_colorspace colorspace;
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};
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/* Find a data format by a pixel code in an array */
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static const struct mt9v022_datafmt *mt9v022_find_datafmt(
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enum v4l2_mbus_pixelcode code, const struct mt9v022_datafmt *fmt,
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int n)
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{
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int i;
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for (i = 0; i < n; i++)
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if (fmt[i].code == code)
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return fmt + i;
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return NULL;
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}
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static const struct mt9v022_datafmt mt9v022_colour_fmts[] = {
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/*
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* Order important: first natively supported,
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* second supported with a GPIO extender
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*/
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{V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB},
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{V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
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};
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static const struct mt9v022_datafmt mt9v022_monochrome_fmts[] = {
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/* Order important - see above */
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{V4L2_MBUS_FMT_Y10_1X10, V4L2_COLORSPACE_JPEG},
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{V4L2_MBUS_FMT_GREY8_1X8, V4L2_COLORSPACE_JPEG},
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};
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struct mt9v022 {
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struct v4l2_subdev subdev;
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struct v4l2_rect rect; /* Sensor window */
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const struct mt9v022_datafmt *fmt;
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const struct mt9v022_datafmt *fmts;
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int num_fmts;
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int model; /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */
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u16 chip_control;
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unsigned short y_skip_top; /* Lines to skip at the top */
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};
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static struct mt9v022 *to_mt9v022(const struct i2c_client *client)
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{
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return container_of(i2c_get_clientdata(client), struct mt9v022, subdev);
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}
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static int reg_read(struct i2c_client *client, const u8 reg)
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{
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s32 data = i2c_smbus_read_word_data(client, reg);
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return data < 0 ? data : swab16(data);
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}
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static int reg_write(struct i2c_client *client, const u8 reg,
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const u16 data)
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{
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return i2c_smbus_write_word_data(client, reg, swab16(data));
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}
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static int reg_set(struct i2c_client *client, const u8 reg,
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const u16 data)
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{
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int ret;
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ret = reg_read(client, reg);
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if (ret < 0)
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return ret;
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return reg_write(client, reg, ret | data);
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}
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static int reg_clear(struct i2c_client *client, const u8 reg,
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const u16 data)
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{
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int ret;
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ret = reg_read(client, reg);
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if (ret < 0)
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return ret;
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return reg_write(client, reg, ret & ~data);
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}
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static int mt9v022_init(struct i2c_client *client)
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{
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struct mt9v022 *mt9v022 = to_mt9v022(client);
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int ret;
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/*
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* Almost the default mode: master, parallel, simultaneous, and an
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* undocumented bit 0x200, which is present in table 7, but not in 8,
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* plus snapshot mode to disable scan for now
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*/
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mt9v022->chip_control |= 0x10;
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ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control);
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if (!ret)
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ret = reg_write(client, MT9V022_READ_MODE, 0x300);
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/* All defaults */
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if (!ret)
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/* AEC, AGC on */
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ret = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x3);
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if (!ret)
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ret = reg_write(client, MT9V022_ANALOG_GAIN, 16);
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if (!ret)
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ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, 480);
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if (!ret)
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ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480);
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if (!ret)
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/* default - auto */
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ret = reg_clear(client, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1);
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if (!ret)
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ret = reg_write(client, MT9V022_DIGITAL_TEST_PATTERN, 0);
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return ret;
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}
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static int mt9v022_s_stream(struct v4l2_subdev *sd, int enable)
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{
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struct i2c_client *client = sd->priv;
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struct mt9v022 *mt9v022 = to_mt9v022(client);
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if (enable)
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/* Switch to master "normal" mode */
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mt9v022->chip_control &= ~0x10;
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else
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/* Switch to snapshot mode */
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mt9v022->chip_control |= 0x10;
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if (reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control) < 0)
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return -EIO;
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return 0;
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}
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static int mt9v022_set_bus_param(struct soc_camera_device *icd,
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unsigned long flags)
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{
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struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
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struct mt9v022 *mt9v022 = to_mt9v022(client);
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struct soc_camera_link *icl = to_soc_camera_link(icd);
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unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK;
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int ret;
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u16 pixclk = 0;
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/* Only one width bit may be set */
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if (!is_power_of_2(width_flag))
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return -EINVAL;
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if (icl->set_bus_param) {
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ret = icl->set_bus_param(icl, width_flag);
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if (ret)
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return ret;
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} else {
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/*
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* Without board specific bus width settings we only support the
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* sensors native bus width
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*/
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if (width_flag != SOCAM_DATAWIDTH_10)
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return -EINVAL;
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}
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flags = soc_camera_apply_sensor_flags(icl, flags);
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if (flags & SOCAM_PCLK_SAMPLE_RISING)
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pixclk |= 0x10;
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if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH))
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pixclk |= 0x1;
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if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH))
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pixclk |= 0x2;
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ret = reg_write(client, MT9V022_PIXCLK_FV_LV, pixclk);
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if (ret < 0)
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return ret;
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if (!(flags & SOCAM_MASTER))
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mt9v022->chip_control &= ~0x8;
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ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control);
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if (ret < 0)
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return ret;
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dev_dbg(&client->dev, "Calculated pixclk 0x%x, chip control 0x%x\n",
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pixclk, mt9v022->chip_control);
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return 0;
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}
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static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd)
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{
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struct soc_camera_link *icl = to_soc_camera_link(icd);
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unsigned int flags = SOCAM_MASTER | SOCAM_SLAVE |
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SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING |
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SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW |
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SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW |
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SOCAM_DATA_ACTIVE_HIGH;
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if (icl->query_bus_param)
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flags |= icl->query_bus_param(icl) & SOCAM_DATAWIDTH_MASK;
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else
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flags |= SOCAM_DATAWIDTH_10;
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return soc_camera_apply_sensor_flags(icl, flags);
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}
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static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
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{
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struct i2c_client *client = sd->priv;
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struct mt9v022 *mt9v022 = to_mt9v022(client);
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struct v4l2_rect rect = a->c;
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int ret;
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/* Bayer format - even size lengths */
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if (mt9v022->fmts == mt9v022_colour_fmts) {
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rect.width = ALIGN(rect.width, 2);
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rect.height = ALIGN(rect.height, 2);
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/* Let the user play with the starting pixel */
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}
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soc_camera_limit_side(&rect.left, &rect.width,
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MT9V022_COLUMN_SKIP, MT9V022_MIN_WIDTH, MT9V022_MAX_WIDTH);
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soc_camera_limit_side(&rect.top, &rect.height,
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MT9V022_ROW_SKIP, MT9V022_MIN_HEIGHT, MT9V022_MAX_HEIGHT);
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/* Like in example app. Contradicts the datasheet though */
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ret = reg_read(client, MT9V022_AEC_AGC_ENABLE);
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if (ret >= 0) {
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if (ret & 1) /* Autoexposure */
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ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH,
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rect.height + mt9v022->y_skip_top + 43);
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else
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ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH,
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rect.height + mt9v022->y_skip_top + 43);
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}
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/* Setup frame format: defaults apart from width and height */
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if (!ret)
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ret = reg_write(client, MT9V022_COLUMN_START, rect.left);
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if (!ret)
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ret = reg_write(client, MT9V022_ROW_START, rect.top);
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if (!ret)
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/*
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* Default 94, Phytec driver says:
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* "width + horizontal blank >= 660"
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*/
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ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING,
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rect.width > 660 - 43 ? 43 :
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660 - rect.width);
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if (!ret)
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ret = reg_write(client, MT9V022_VERTICAL_BLANKING, 45);
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if (!ret)
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ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect.width);
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if (!ret)
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ret = reg_write(client, MT9V022_WINDOW_HEIGHT,
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rect.height + mt9v022->y_skip_top);
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if (ret < 0)
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return ret;
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dev_dbg(&client->dev, "Frame %dx%d pixel\n", rect.width, rect.height);
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mt9v022->rect = rect;
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return 0;
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}
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static int mt9v022_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
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{
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struct i2c_client *client = sd->priv;
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struct mt9v022 *mt9v022 = to_mt9v022(client);
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a->c = mt9v022->rect;
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a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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return 0;
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}
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static int mt9v022_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
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{
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a->bounds.left = MT9V022_COLUMN_SKIP;
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a->bounds.top = MT9V022_ROW_SKIP;
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a->bounds.width = MT9V022_MAX_WIDTH;
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a->bounds.height = MT9V022_MAX_HEIGHT;
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a->defrect = a->bounds;
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a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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a->pixelaspect.numerator = 1;
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a->pixelaspect.denominator = 1;
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return 0;
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}
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static int mt9v022_g_fmt(struct v4l2_subdev *sd,
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struct v4l2_mbus_framefmt *mf)
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{
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struct i2c_client *client = sd->priv;
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struct mt9v022 *mt9v022 = to_mt9v022(client);
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mf->width = mt9v022->rect.width;
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mf->height = mt9v022->rect.height;
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mf->code = mt9v022->fmt->code;
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mf->colorspace = mt9v022->fmt->colorspace;
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mf->field = V4L2_FIELD_NONE;
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return 0;
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}
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static int mt9v022_s_fmt(struct v4l2_subdev *sd,
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struct v4l2_mbus_framefmt *mf)
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{
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struct i2c_client *client = sd->priv;
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struct mt9v022 *mt9v022 = to_mt9v022(client);
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struct v4l2_crop a = {
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.c = {
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.left = mt9v022->rect.left,
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.top = mt9v022->rect.top,
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.width = mf->width,
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.height = mf->height,
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},
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};
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int ret;
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/*
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* The caller provides a supported format, as verified per call to
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* icd->try_fmt(), datawidth is from our supported format list
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*/
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switch (mf->code) {
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case V4L2_MBUS_FMT_GREY8_1X8:
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case V4L2_MBUS_FMT_Y10_1X10:
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if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM)
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return -EINVAL;
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break;
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case V4L2_MBUS_FMT_SBGGR8_1X8:
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case V4L2_MBUS_FMT_SBGGR10_1X10:
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if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC)
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return -EINVAL;
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break;
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case 0:
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/* No format change, only geometry */
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break;
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default:
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return -EINVAL;
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}
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/* No support for scaling on this camera, just crop. */
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ret = mt9v022_s_crop(sd, &a);
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if (!ret) {
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mf->width = mt9v022->rect.width;
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mf->height = mt9v022->rect.height;
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mt9v022->fmt = mt9v022_find_datafmt(mf->code,
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mt9v022->fmts, mt9v022->num_fmts);
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mf->colorspace = mt9v022->fmt->colorspace;
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}
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return ret;
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}
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static int mt9v022_try_fmt(struct v4l2_subdev *sd,
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struct v4l2_mbus_framefmt *mf)
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{
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struct i2c_client *client = sd->priv;
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struct mt9v022 *mt9v022 = to_mt9v022(client);
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const struct mt9v022_datafmt *fmt;
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int align = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
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mf->code == V4L2_MBUS_FMT_SBGGR10_1X10;
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v4l_bound_align_image(&mf->width, MT9V022_MIN_WIDTH,
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MT9V022_MAX_WIDTH, align,
|
|
&mf->height, MT9V022_MIN_HEIGHT + mt9v022->y_skip_top,
|
|
MT9V022_MAX_HEIGHT + mt9v022->y_skip_top, align, 0);
|
|
|
|
fmt = mt9v022_find_datafmt(mf->code, mt9v022->fmts,
|
|
mt9v022->num_fmts);
|
|
if (!fmt) {
|
|
fmt = mt9v022->fmt;
|
|
mf->code = fmt->code;
|
|
}
|
|
|
|
mf->colorspace = fmt->colorspace;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v022_g_chip_ident(struct v4l2_subdev *sd,
|
|
struct v4l2_dbg_chip_ident *id)
|
|
{
|
|
struct i2c_client *client = sd->priv;
|
|
struct mt9v022 *mt9v022 = to_mt9v022(client);
|
|
|
|
if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
|
|
return -EINVAL;
|
|
|
|
if (id->match.addr != client->addr)
|
|
return -ENODEV;
|
|
|
|
id->ident = mt9v022->model;
|
|
id->revision = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
static int mt9v022_g_register(struct v4l2_subdev *sd,
|
|
struct v4l2_dbg_register *reg)
|
|
{
|
|
struct i2c_client *client = sd->priv;
|
|
|
|
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
|
|
return -EINVAL;
|
|
|
|
if (reg->match.addr != client->addr)
|
|
return -ENODEV;
|
|
|
|
reg->size = 2;
|
|
reg->val = reg_read(client, reg->reg);
|
|
|
|
if (reg->val > 0xffff)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v022_s_register(struct v4l2_subdev *sd,
|
|
struct v4l2_dbg_register *reg)
|
|
{
|
|
struct i2c_client *client = sd->priv;
|
|
|
|
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
|
|
return -EINVAL;
|
|
|
|
if (reg->match.addr != client->addr)
|
|
return -ENODEV;
|
|
|
|
if (reg_write(client, reg->reg, reg->val) < 0)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static const struct v4l2_queryctrl mt9v022_controls[] = {
|
|
{
|
|
.id = V4L2_CID_VFLIP,
|
|
.type = V4L2_CTRL_TYPE_BOOLEAN,
|
|
.name = "Flip Vertically",
|
|
.minimum = 0,
|
|
.maximum = 1,
|
|
.step = 1,
|
|
.default_value = 0,
|
|
}, {
|
|
.id = V4L2_CID_HFLIP,
|
|
.type = V4L2_CTRL_TYPE_BOOLEAN,
|
|
.name = "Flip Horizontally",
|
|
.minimum = 0,
|
|
.maximum = 1,
|
|
.step = 1,
|
|
.default_value = 0,
|
|
}, {
|
|
.id = V4L2_CID_GAIN,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "Analog Gain",
|
|
.minimum = 64,
|
|
.maximum = 127,
|
|
.step = 1,
|
|
.default_value = 64,
|
|
.flags = V4L2_CTRL_FLAG_SLIDER,
|
|
}, {
|
|
.id = V4L2_CID_EXPOSURE,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "Exposure",
|
|
.minimum = 1,
|
|
.maximum = 255,
|
|
.step = 1,
|
|
.default_value = 255,
|
|
.flags = V4L2_CTRL_FLAG_SLIDER,
|
|
}, {
|
|
.id = V4L2_CID_AUTOGAIN,
|
|
.type = V4L2_CTRL_TYPE_BOOLEAN,
|
|
.name = "Automatic Gain",
|
|
.minimum = 0,
|
|
.maximum = 1,
|
|
.step = 1,
|
|
.default_value = 1,
|
|
}, {
|
|
.id = V4L2_CID_EXPOSURE_AUTO,
|
|
.type = V4L2_CTRL_TYPE_BOOLEAN,
|
|
.name = "Automatic Exposure",
|
|
.minimum = 0,
|
|
.maximum = 1,
|
|
.step = 1,
|
|
.default_value = 1,
|
|
}
|
|
};
|
|
|
|
static struct soc_camera_ops mt9v022_ops = {
|
|
.set_bus_param = mt9v022_set_bus_param,
|
|
.query_bus_param = mt9v022_query_bus_param,
|
|
.controls = mt9v022_controls,
|
|
.num_controls = ARRAY_SIZE(mt9v022_controls),
|
|
};
|
|
|
|
static int mt9v022_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
|
|
{
|
|
struct i2c_client *client = sd->priv;
|
|
const struct v4l2_queryctrl *qctrl;
|
|
unsigned long range;
|
|
int data;
|
|
|
|
qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id);
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_VFLIP:
|
|
data = reg_read(client, MT9V022_READ_MODE);
|
|
if (data < 0)
|
|
return -EIO;
|
|
ctrl->value = !!(data & 0x10);
|
|
break;
|
|
case V4L2_CID_HFLIP:
|
|
data = reg_read(client, MT9V022_READ_MODE);
|
|
if (data < 0)
|
|
return -EIO;
|
|
ctrl->value = !!(data & 0x20);
|
|
break;
|
|
case V4L2_CID_EXPOSURE_AUTO:
|
|
data = reg_read(client, MT9V022_AEC_AGC_ENABLE);
|
|
if (data < 0)
|
|
return -EIO;
|
|
ctrl->value = !!(data & 0x1);
|
|
break;
|
|
case V4L2_CID_AUTOGAIN:
|
|
data = reg_read(client, MT9V022_AEC_AGC_ENABLE);
|
|
if (data < 0)
|
|
return -EIO;
|
|
ctrl->value = !!(data & 0x2);
|
|
break;
|
|
case V4L2_CID_GAIN:
|
|
data = reg_read(client, MT9V022_ANALOG_GAIN);
|
|
if (data < 0)
|
|
return -EIO;
|
|
|
|
range = qctrl->maximum - qctrl->minimum;
|
|
ctrl->value = ((data - 16) * range + 24) / 48 + qctrl->minimum;
|
|
|
|
break;
|
|
case V4L2_CID_EXPOSURE:
|
|
data = reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH);
|
|
if (data < 0)
|
|
return -EIO;
|
|
|
|
range = qctrl->maximum - qctrl->minimum;
|
|
ctrl->value = ((data - 1) * range + 239) / 479 + qctrl->minimum;
|
|
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v022_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
|
|
{
|
|
int data;
|
|
struct i2c_client *client = sd->priv;
|
|
const struct v4l2_queryctrl *qctrl;
|
|
|
|
qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id);
|
|
if (!qctrl)
|
|
return -EINVAL;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_VFLIP:
|
|
if (ctrl->value)
|
|
data = reg_set(client, MT9V022_READ_MODE, 0x10);
|
|
else
|
|
data = reg_clear(client, MT9V022_READ_MODE, 0x10);
|
|
if (data < 0)
|
|
return -EIO;
|
|
break;
|
|
case V4L2_CID_HFLIP:
|
|
if (ctrl->value)
|
|
data = reg_set(client, MT9V022_READ_MODE, 0x20);
|
|
else
|
|
data = reg_clear(client, MT9V022_READ_MODE, 0x20);
|
|
if (data < 0)
|
|
return -EIO;
|
|
break;
|
|
case V4L2_CID_GAIN:
|
|
/* mt9v022 has minimum == default */
|
|
if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
|
|
return -EINVAL;
|
|
else {
|
|
unsigned long range = qctrl->maximum - qctrl->minimum;
|
|
/* Valid values 16 to 64, 32 to 64 must be even. */
|
|
unsigned long gain = ((ctrl->value - qctrl->minimum) *
|
|
48 + range / 2) / range + 16;
|
|
if (gain >= 32)
|
|
gain &= ~1;
|
|
/*
|
|
* The user wants to set gain manually, hope, she
|
|
* knows, what she's doing... Switch AGC off.
|
|
*/
|
|
|
|
if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0)
|
|
return -EIO;
|
|
|
|
dev_dbg(&client->dev, "Setting gain from %d to %lu\n",
|
|
reg_read(client, MT9V022_ANALOG_GAIN), gain);
|
|
if (reg_write(client, MT9V022_ANALOG_GAIN, gain) < 0)
|
|
return -EIO;
|
|
}
|
|
break;
|
|
case V4L2_CID_EXPOSURE:
|
|
/* mt9v022 has maximum == default */
|
|
if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
|
|
return -EINVAL;
|
|
else {
|
|
unsigned long range = qctrl->maximum - qctrl->minimum;
|
|
unsigned long shutter = ((ctrl->value - qctrl->minimum) *
|
|
479 + range / 2) / range + 1;
|
|
/*
|
|
* The user wants to set shutter width manually, hope,
|
|
* she knows, what she's doing... Switch AEC off.
|
|
*/
|
|
|
|
if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0)
|
|
return -EIO;
|
|
|
|
dev_dbg(&client->dev, "Shutter width from %d to %lu\n",
|
|
reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH),
|
|
shutter);
|
|
if (reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH,
|
|
shutter) < 0)
|
|
return -EIO;
|
|
}
|
|
break;
|
|
case V4L2_CID_AUTOGAIN:
|
|
if (ctrl->value)
|
|
data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2);
|
|
else
|
|
data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2);
|
|
if (data < 0)
|
|
return -EIO;
|
|
break;
|
|
case V4L2_CID_EXPOSURE_AUTO:
|
|
if (ctrl->value)
|
|
data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1);
|
|
else
|
|
data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1);
|
|
if (data < 0)
|
|
return -EIO;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Interface active, can use i2c. If it fails, it can indeed mean, that
|
|
* this wasn't our capture interface, so, we wait for the right one
|
|
*/
|
|
static int mt9v022_video_probe(struct soc_camera_device *icd,
|
|
struct i2c_client *client)
|
|
{
|
|
struct mt9v022 *mt9v022 = to_mt9v022(client);
|
|
struct soc_camera_link *icl = to_soc_camera_link(icd);
|
|
s32 data;
|
|
int ret;
|
|
unsigned long flags;
|
|
|
|
if (!icd->dev.parent ||
|
|
to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
|
|
return -ENODEV;
|
|
|
|
/* Read out the chip version register */
|
|
data = reg_read(client, MT9V022_CHIP_VERSION);
|
|
|
|
/* must be 0x1311 or 0x1313 */
|
|
if (data != 0x1311 && data != 0x1313) {
|
|
ret = -ENODEV;
|
|
dev_info(&client->dev, "No MT9V022 found, ID register 0x%x\n",
|
|
data);
|
|
goto ei2c;
|
|
}
|
|
|
|
/* Soft reset */
|
|
ret = reg_write(client, MT9V022_RESET, 1);
|
|
if (ret < 0)
|
|
goto ei2c;
|
|
/* 15 clock cycles */
|
|
udelay(200);
|
|
if (reg_read(client, MT9V022_RESET)) {
|
|
dev_err(&client->dev, "Resetting MT9V022 failed!\n");
|
|
if (ret > 0)
|
|
ret = -EIO;
|
|
goto ei2c;
|
|
}
|
|
|
|
/* Set monochrome or colour sensor type */
|
|
if (sensor_type && (!strcmp("colour", sensor_type) ||
|
|
!strcmp("color", sensor_type))) {
|
|
ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11);
|
|
mt9v022->model = V4L2_IDENT_MT9V022IX7ATC;
|
|
mt9v022->fmts = mt9v022_colour_fmts;
|
|
} else {
|
|
ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11);
|
|
mt9v022->model = V4L2_IDENT_MT9V022IX7ATM;
|
|
mt9v022->fmts = mt9v022_monochrome_fmts;
|
|
}
|
|
|
|
if (ret < 0)
|
|
goto ei2c;
|
|
|
|
mt9v022->num_fmts = 0;
|
|
|
|
/*
|
|
* This is a 10bit sensor, so by default we only allow 10bit.
|
|
* The platform may support different bus widths due to
|
|
* different routing of the data lines.
|
|
*/
|
|
if (icl->query_bus_param)
|
|
flags = icl->query_bus_param(icl);
|
|
else
|
|
flags = SOCAM_DATAWIDTH_10;
|
|
|
|
if (flags & SOCAM_DATAWIDTH_10)
|
|
mt9v022->num_fmts++;
|
|
else
|
|
mt9v022->fmts++;
|
|
|
|
if (flags & SOCAM_DATAWIDTH_8)
|
|
mt9v022->num_fmts++;
|
|
|
|
mt9v022->fmt = &mt9v022->fmts[0];
|
|
|
|
dev_info(&client->dev, "Detected a MT9V022 chip ID %x, %s sensor\n",
|
|
data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ?
|
|
"monochrome" : "colour");
|
|
|
|
ret = mt9v022_init(client);
|
|
if (ret < 0)
|
|
dev_err(&client->dev, "Failed to initialise the camera\n");
|
|
|
|
ei2c:
|
|
return ret;
|
|
}
|
|
|
|
static void mt9v022_video_remove(struct soc_camera_device *icd)
|
|
{
|
|
struct soc_camera_link *icl = to_soc_camera_link(icd);
|
|
|
|
dev_dbg(&icd->dev, "Video removed: %p, %p\n",
|
|
icd->dev.parent, icd->vdev);
|
|
if (icl->free_bus)
|
|
icl->free_bus(icl);
|
|
}
|
|
|
|
static int mt9v022_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines)
|
|
{
|
|
struct i2c_client *client = sd->priv;
|
|
struct mt9v022 *mt9v022 = to_mt9v022(client);
|
|
|
|
*lines = mt9v022->y_skip_top;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = {
|
|
.g_ctrl = mt9v022_g_ctrl,
|
|
.s_ctrl = mt9v022_s_ctrl,
|
|
.g_chip_ident = mt9v022_g_chip_ident,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.g_register = mt9v022_g_register,
|
|
.s_register = mt9v022_s_register,
|
|
#endif
|
|
};
|
|
|
|
static int mt9v022_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
|
|
enum v4l2_mbus_pixelcode *code)
|
|
{
|
|
struct i2c_client *client = sd->priv;
|
|
struct mt9v022 *mt9v022 = to_mt9v022(client);
|
|
|
|
if (index >= mt9v022->num_fmts)
|
|
return -EINVAL;
|
|
|
|
*code = mt9v022->fmts[index].code;
|
|
return 0;
|
|
}
|
|
|
|
static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = {
|
|
.s_stream = mt9v022_s_stream,
|
|
.s_mbus_fmt = mt9v022_s_fmt,
|
|
.g_mbus_fmt = mt9v022_g_fmt,
|
|
.try_mbus_fmt = mt9v022_try_fmt,
|
|
.s_crop = mt9v022_s_crop,
|
|
.g_crop = mt9v022_g_crop,
|
|
.cropcap = mt9v022_cropcap,
|
|
.enum_mbus_fmt = mt9v022_enum_fmt,
|
|
};
|
|
|
|
static struct v4l2_subdev_sensor_ops mt9v022_subdev_sensor_ops = {
|
|
.g_skip_top_lines = mt9v022_g_skip_top_lines,
|
|
};
|
|
|
|
static struct v4l2_subdev_ops mt9v022_subdev_ops = {
|
|
.core = &mt9v022_subdev_core_ops,
|
|
.video = &mt9v022_subdev_video_ops,
|
|
.sensor = &mt9v022_subdev_sensor_ops,
|
|
};
|
|
|
|
static int mt9v022_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *did)
|
|
{
|
|
struct mt9v022 *mt9v022;
|
|
struct soc_camera_device *icd = client->dev.platform_data;
|
|
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
|
|
struct soc_camera_link *icl;
|
|
int ret;
|
|
|
|
if (!icd) {
|
|
dev_err(&client->dev, "MT9V022: missing soc-camera data!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
icl = to_soc_camera_link(icd);
|
|
if (!icl) {
|
|
dev_err(&client->dev, "MT9V022 driver needs platform data\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
|
|
dev_warn(&adapter->dev,
|
|
"I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
|
|
return -EIO;
|
|
}
|
|
|
|
mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL);
|
|
if (!mt9v022)
|
|
return -ENOMEM;
|
|
|
|
v4l2_i2c_subdev_init(&mt9v022->subdev, client, &mt9v022_subdev_ops);
|
|
|
|
mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT;
|
|
|
|
icd->ops = &mt9v022_ops;
|
|
/*
|
|
* MT9V022 _really_ corrupts the first read out line.
|
|
* TODO: verify on i.MX31
|
|
*/
|
|
mt9v022->y_skip_top = 1;
|
|
mt9v022->rect.left = MT9V022_COLUMN_SKIP;
|
|
mt9v022->rect.top = MT9V022_ROW_SKIP;
|
|
mt9v022->rect.width = MT9V022_MAX_WIDTH;
|
|
mt9v022->rect.height = MT9V022_MAX_HEIGHT;
|
|
|
|
ret = mt9v022_video_probe(icd, client);
|
|
if (ret) {
|
|
icd->ops = NULL;
|
|
kfree(mt9v022);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mt9v022_remove(struct i2c_client *client)
|
|
{
|
|
struct mt9v022 *mt9v022 = to_mt9v022(client);
|
|
struct soc_camera_device *icd = client->dev.platform_data;
|
|
|
|
icd->ops = NULL;
|
|
mt9v022_video_remove(icd);
|
|
client->driver = NULL;
|
|
kfree(mt9v022);
|
|
|
|
return 0;
|
|
}
|
|
static const struct i2c_device_id mt9v022_id[] = {
|
|
{ "mt9v022", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, mt9v022_id);
|
|
|
|
static struct i2c_driver mt9v022_i2c_driver = {
|
|
.driver = {
|
|
.name = "mt9v022",
|
|
},
|
|
.probe = mt9v022_probe,
|
|
.remove = mt9v022_remove,
|
|
.id_table = mt9v022_id,
|
|
};
|
|
|
|
static int __init mt9v022_mod_init(void)
|
|
{
|
|
return i2c_add_driver(&mt9v022_i2c_driver);
|
|
}
|
|
|
|
static void __exit mt9v022_mod_exit(void)
|
|
{
|
|
i2c_del_driver(&mt9v022_i2c_driver);
|
|
}
|
|
|
|
module_init(mt9v022_mod_init);
|
|
module_exit(mt9v022_mod_exit);
|
|
|
|
MODULE_DESCRIPTION("Micron MT9V022 Camera driver");
|
|
MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>");
|
|
MODULE_LICENSE("GPL");
|