+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Driver for MT9M032 CMOS Image Sensor from Micron
- *
- * Copyright (C) 2010-2011 Lund Engineering
- * Contact: Gil Lund <gwlund@lundeng.com>
- * Author: Martin Hostettler <martin@neutronstar.dyndns.org>
- */
-
-#include <linux/delay.h>
-#include <linux/i2c.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/math64.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/v4l2-mediabus.h>
-
-#include <media/media-entity.h>
-#include <media/i2c/mt9m032.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-subdev.h>
-
-#include "aptina-pll.h"
-
-/*
- * width and height include active boundary and black parts
- *
- * column 0- 15 active boundary
- * column 16-1455 image
- * column 1456-1471 active boundary
- * column 1472-1599 black
- *
- * row 0- 51 black
- * row 53- 59 active boundary
- * row 60-1139 image
- * row 1140-1147 active boundary
- * row 1148-1151 black
- */
-
-#define MT9M032_PIXEL_ARRAY_WIDTH 1600
-#define MT9M032_PIXEL_ARRAY_HEIGHT 1152
-
-#define MT9M032_CHIP_VERSION 0x00
-#define MT9M032_CHIP_VERSION_VALUE 0x1402
-#define MT9M032_ROW_START 0x01
-#define MT9M032_ROW_START_MIN 0
-#define MT9M032_ROW_START_MAX 1152
-#define MT9M032_ROW_START_DEF 60
-#define MT9M032_COLUMN_START 0x02
-#define MT9M032_COLUMN_START_MIN 0
-#define MT9M032_COLUMN_START_MAX 1600
-#define MT9M032_COLUMN_START_DEF 16
-#define MT9M032_ROW_SIZE 0x03
-#define MT9M032_ROW_SIZE_MIN 32
-#define MT9M032_ROW_SIZE_MAX 1152
-#define MT9M032_ROW_SIZE_DEF 1080
-#define MT9M032_COLUMN_SIZE 0x04
-#define MT9M032_COLUMN_SIZE_MIN 32
-#define MT9M032_COLUMN_SIZE_MAX 1600
-#define MT9M032_COLUMN_SIZE_DEF 1440
-#define MT9M032_HBLANK 0x05
-#define MT9M032_VBLANK 0x06
-#define MT9M032_VBLANK_MAX 0x7ff
-#define MT9M032_SHUTTER_WIDTH_HIGH 0x08
-#define MT9M032_SHUTTER_WIDTH_LOW 0x09
-#define MT9M032_SHUTTER_WIDTH_MIN 1
-#define MT9M032_SHUTTER_WIDTH_MAX 1048575
-#define MT9M032_SHUTTER_WIDTH_DEF 1943
-#define MT9M032_PIX_CLK_CTRL 0x0a
-#define MT9M032_PIX_CLK_CTRL_INV_PIXCLK 0x8000
-#define MT9M032_RESTART 0x0b
-#define MT9M032_RESET 0x0d
-#define MT9M032_PLL_CONFIG1 0x11
-#define MT9M032_PLL_CONFIG1_PREDIV_MASK 0x3f
-#define MT9M032_PLL_CONFIG1_MUL_SHIFT 8
-#define MT9M032_READ_MODE1 0x1e
-#define MT9M032_READ_MODE1_OUTPUT_BAD_FRAMES (1 << 13)
-#define MT9M032_READ_MODE1_MAINTAIN_FRAME_RATE (1 << 12)
-#define MT9M032_READ_MODE1_XOR_LINE_VALID (1 << 11)
-#define MT9M032_READ_MODE1_CONT_LINE_VALID (1 << 10)
-#define MT9M032_READ_MODE1_INVERT_TRIGGER (1 << 9)
-#define MT9M032_READ_MODE1_SNAPSHOT (1 << 8)
-#define MT9M032_READ_MODE1_GLOBAL_RESET (1 << 7)
-#define MT9M032_READ_MODE1_BULB_EXPOSURE (1 << 6)
-#define MT9M032_READ_MODE1_INVERT_STROBE (1 << 5)
-#define MT9M032_READ_MODE1_STROBE_ENABLE (1 << 4)
-#define MT9M032_READ_MODE1_STROBE_START_TRIG1 (0 << 2)
-#define MT9M032_READ_MODE1_STROBE_START_EXP (1 << 2)
-#define MT9M032_READ_MODE1_STROBE_START_SHUTTER (2 << 2)
-#define MT9M032_READ_MODE1_STROBE_START_TRIG2 (3 << 2)
-#define MT9M032_READ_MODE1_STROBE_END_TRIG1 (0 << 0)
-#define MT9M032_READ_MODE1_STROBE_END_EXP (1 << 0)
-#define MT9M032_READ_MODE1_STROBE_END_SHUTTER (2 << 0)
-#define MT9M032_READ_MODE1_STROBE_END_TRIG2 (3 << 0)
-#define MT9M032_READ_MODE2 0x20
-#define MT9M032_READ_MODE2_VFLIP_SHIFT 15
-#define MT9M032_READ_MODE2_HFLIP_SHIFT 14
-#define MT9M032_READ_MODE2_ROW_BLC 0x40
-#define MT9M032_GAIN_GREEN1 0x2b
-#define MT9M032_GAIN_BLUE 0x2c
-#define MT9M032_GAIN_RED 0x2d
-#define MT9M032_GAIN_GREEN2 0x2e
-
-/* write only */
-#define MT9M032_GAIN_ALL 0x35
-#define MT9M032_GAIN_DIGITAL_MASK 0x7f
-#define MT9M032_GAIN_DIGITAL_SHIFT 8
-#define MT9M032_GAIN_AMUL_SHIFT 6
-#define MT9M032_GAIN_ANALOG_MASK 0x3f
-#define MT9M032_FORMATTER1 0x9e
-#define MT9M032_FORMATTER1_PLL_P1_6 (1 << 8)
-#define MT9M032_FORMATTER1_PARALLEL (1 << 12)
-#define MT9M032_FORMATTER2 0x9f
-#define MT9M032_FORMATTER2_DOUT_EN 0x1000
-#define MT9M032_FORMATTER2_PIXCLK_EN 0x2000
-
-/*
- * The available MT9M032 datasheet is missing documentation for register 0x10
- * MT9P031 seems to be close enough, so use constants from that datasheet for
- * now.
- * But keep the name MT9P031 to remind us, that this isn't really confirmed
- * for this sensor.
- */
-#define MT9P031_PLL_CONTROL 0x10
-#define MT9P031_PLL_CONTROL_PWROFF 0x0050
-#define MT9P031_PLL_CONTROL_PWRON 0x0051
-#define MT9P031_PLL_CONTROL_USEPLL 0x0052
-
-struct mt9m032 {
- struct v4l2_subdev subdev;
- struct media_pad pad;
- struct mt9m032_platform_data *pdata;
-
- unsigned int pix_clock;
-
- struct v4l2_ctrl_handler ctrls;
- struct {
- struct v4l2_ctrl *hflip;
- struct v4l2_ctrl *vflip;
- };
-
- struct mutex lock; /* Protects streaming, format, interval and crop */
-
- bool streaming;
-
- struct v4l2_mbus_framefmt format;
- struct v4l2_rect crop;
- struct v4l2_fract frame_interval;
-};
-
-#define to_mt9m032(sd) container_of(sd, struct mt9m032, subdev)
-#define to_dev(sensor) \
- (&((struct i2c_client *)v4l2_get_subdevdata(&(sensor)->subdev))->dev)
-
-static int mt9m032_read(struct i2c_client *client, u8 reg)
-{
- return i2c_smbus_read_word_swapped(client, reg);
-}
-
-static int mt9m032_write(struct i2c_client *client, u8 reg, const u16 data)
-{
- return i2c_smbus_write_word_swapped(client, reg, data);
-}
-
-static u32 mt9m032_row_time(struct mt9m032 *sensor, unsigned int width)
-{
- unsigned int effective_width;
- u32 ns;
-
- effective_width = width + 716; /* empirical value */
- ns = div_u64(1000000000ULL * effective_width, sensor->pix_clock);
- dev_dbg(to_dev(sensor), "MT9M032 line time: %u ns\n", ns);
- return ns;
-}
-
-static int mt9m032_update_timing(struct mt9m032 *sensor,
- struct v4l2_fract *interval)
-{
- struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
- struct v4l2_rect *crop = &sensor->crop;
- unsigned int min_vblank;
- unsigned int vblank;
- u32 row_time;
-
- if (!interval)
- interval = &sensor->frame_interval;
-
- row_time = mt9m032_row_time(sensor, crop->width);
-
- vblank = div_u64(1000000000ULL * interval->numerator,
- (u64)row_time * interval->denominator)
- - crop->height;
-
- if (vblank > MT9M032_VBLANK_MAX) {
- /* hardware limits to 11 bit values */
- interval->denominator = 1000;
- interval->numerator =
- div_u64((crop->height + MT9M032_VBLANK_MAX) *
- (u64)row_time * interval->denominator,
- 1000000000ULL);
- vblank = div_u64(1000000000ULL * interval->numerator,
- (u64)row_time * interval->denominator)
- - crop->height;
- }
- /* enforce minimal 1.6ms blanking time. */
- min_vblank = 1600000 / row_time;
- vblank = clamp_t(unsigned int, vblank, min_vblank, MT9M032_VBLANK_MAX);
-
- return mt9m032_write(client, MT9M032_VBLANK, vblank);
-}
-
-static int mt9m032_update_geom_timing(struct mt9m032 *sensor)
-{
- struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
- int ret;
-
- ret = mt9m032_write(client, MT9M032_COLUMN_SIZE,
- sensor->crop.width - 1);
- if (!ret)
- ret = mt9m032_write(client, MT9M032_ROW_SIZE,
- sensor->crop.height - 1);
- if (!ret)
- ret = mt9m032_write(client, MT9M032_COLUMN_START,
- sensor->crop.left);
- if (!ret)
- ret = mt9m032_write(client, MT9M032_ROW_START,
- sensor->crop.top);
- if (!ret)
- ret = mt9m032_update_timing(sensor, NULL);
- return ret;
-}
-
-static int update_formatter2(struct mt9m032 *sensor, bool streaming)
-{
- struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
- u16 reg_val = MT9M032_FORMATTER2_DOUT_EN
- | 0x0070; /* parts reserved! */
- /* possibly for changing to 14-bit mode */
-
- if (streaming)
- reg_val |= MT9M032_FORMATTER2_PIXCLK_EN; /* pixclock enable */
-
- return mt9m032_write(client, MT9M032_FORMATTER2, reg_val);
-}
-
-static int mt9m032_setup_pll(struct mt9m032 *sensor)
-{
- static const struct aptina_pll_limits limits = {
- .ext_clock_min = 8000000,
- .ext_clock_max = 16500000,
- .int_clock_min = 2000000,
- .int_clock_max = 24000000,
- .out_clock_min = 322000000,
- .out_clock_max = 693000000,
- .pix_clock_max = 99000000,
- .n_min = 1,
- .n_max = 64,
- .m_min = 16,
- .m_max = 255,
- .p1_min = 6,
- .p1_max = 7,
- };
-
- struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
- struct mt9m032_platform_data *pdata = sensor->pdata;
- struct aptina_pll pll;
- u16 reg_val;
- int ret;
-
- pll.ext_clock = pdata->ext_clock;
- pll.pix_clock = pdata->pix_clock;
-
- ret = aptina_pll_calculate(&client->dev, &limits, &pll);
- if (ret < 0)
- return ret;
-
- sensor->pix_clock = pdata->pix_clock;
-
- ret = mt9m032_write(client, MT9M032_PLL_CONFIG1,
- (pll.m << MT9M032_PLL_CONFIG1_MUL_SHIFT) |
- ((pll.n - 1) & MT9M032_PLL_CONFIG1_PREDIV_MASK));
- if (!ret)
- ret = mt9m032_write(client, MT9P031_PLL_CONTROL,
- MT9P031_PLL_CONTROL_PWRON |
- MT9P031_PLL_CONTROL_USEPLL);
- if (!ret) /* more reserved, Continuous, Master Mode */
- ret = mt9m032_write(client, MT9M032_READ_MODE1, 0x8000 |
- MT9M032_READ_MODE1_STROBE_START_EXP |
- MT9M032_READ_MODE1_STROBE_END_SHUTTER);
- if (!ret) {
- reg_val = (pll.p1 == 6 ? MT9M032_FORMATTER1_PLL_P1_6 : 0)
- | MT9M032_FORMATTER1_PARALLEL | 0x001e; /* 14-bit */
- ret = mt9m032_write(client, MT9M032_FORMATTER1, reg_val);
- }
-
- return ret;
-}
-
-/* -----------------------------------------------------------------------------
- * Subdev pad operations
- */
-
-static int mt9m032_enum_mbus_code(struct v4l2_subdev *subdev,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_mbus_code_enum *code)
-{
- if (code->index != 0)
- return -EINVAL;
-
- code->code = MEDIA_BUS_FMT_Y8_1X8;
- return 0;
-}
-
-static int mt9m032_enum_frame_size(struct v4l2_subdev *subdev,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_frame_size_enum *fse)
-{
- if (fse->index != 0 || fse->code != MEDIA_BUS_FMT_Y8_1X8)
- return -EINVAL;
-
- fse->min_width = MT9M032_COLUMN_SIZE_DEF;
- fse->max_width = MT9M032_COLUMN_SIZE_DEF;
- fse->min_height = MT9M032_ROW_SIZE_DEF;
- fse->max_height = MT9M032_ROW_SIZE_DEF;
-
- return 0;
-}
-
-/**
- * __mt9m032_get_pad_crop() - get crop rect
- * @sensor: pointer to the sensor struct
- * @sd_state: v4l2_subdev_state for getting the try crop rect from
- * @which: select try or active crop rect
- *
- * Returns a pointer the current active or fh relative try crop rect
- */
-static struct v4l2_rect *
-__mt9m032_get_pad_crop(struct mt9m032 *sensor,
- struct v4l2_subdev_state *sd_state,
- enum v4l2_subdev_format_whence which)
-{
- switch (which) {
- case V4L2_SUBDEV_FORMAT_TRY:
- return v4l2_subdev_get_try_crop(&sensor->subdev, sd_state, 0);
- case V4L2_SUBDEV_FORMAT_ACTIVE:
- return &sensor->crop;
- default:
- return NULL;
- }
-}
-
-/**
- * __mt9m032_get_pad_format() - get format
- * @sensor: pointer to the sensor struct
- * @sd_state: v4l2_subdev_state for getting the try format from
- * @which: select try or active format
- *
- * Returns a pointer the current active or fh relative try format
- */
-static struct v4l2_mbus_framefmt *
-__mt9m032_get_pad_format(struct mt9m032 *sensor,
- struct v4l2_subdev_state *sd_state,
- enum v4l2_subdev_format_whence which)
-{
- switch (which) {
- case V4L2_SUBDEV_FORMAT_TRY:
- return v4l2_subdev_get_try_format(&sensor->subdev, sd_state,
- 0);
- case V4L2_SUBDEV_FORMAT_ACTIVE:
- return &sensor->format;
- default:
- return NULL;
- }
-}
-
-static int mt9m032_get_pad_format(struct v4l2_subdev *subdev,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *fmt)
-{
- struct mt9m032 *sensor = to_mt9m032(subdev);
-
- mutex_lock(&sensor->lock);
- fmt->format = *__mt9m032_get_pad_format(sensor, sd_state, fmt->which);
- mutex_unlock(&sensor->lock);
-
- return 0;
-}
-
-static int mt9m032_set_pad_format(struct v4l2_subdev *subdev,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *fmt)
-{
- struct mt9m032 *sensor = to_mt9m032(subdev);
- int ret;
-
- mutex_lock(&sensor->lock);
-
- if (sensor->streaming && fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
- ret = -EBUSY;
- goto done;
- }
-
- /* Scaling is not supported, the format is thus fixed. */
- fmt->format = *__mt9m032_get_pad_format(sensor, sd_state, fmt->which);
- ret = 0;
-
-done:
- mutex_unlock(&sensor->lock);
- return ret;
-}
-
-static int mt9m032_get_pad_selection(struct v4l2_subdev *subdev,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_selection *sel)
-{
- struct mt9m032 *sensor = to_mt9m032(subdev);
-
- if (sel->target != V4L2_SEL_TGT_CROP)
- return -EINVAL;
-
- mutex_lock(&sensor->lock);
- sel->r = *__mt9m032_get_pad_crop(sensor, sd_state, sel->which);
- mutex_unlock(&sensor->lock);
-
- return 0;
-}
-
-static int mt9m032_set_pad_selection(struct v4l2_subdev *subdev,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_selection *sel)
-{
- struct mt9m032 *sensor = to_mt9m032(subdev);
- struct v4l2_mbus_framefmt *format;
- struct v4l2_rect *__crop;
- struct v4l2_rect rect;
- int ret = 0;
-
- if (sel->target != V4L2_SEL_TGT_CROP)
- return -EINVAL;
-
- mutex_lock(&sensor->lock);
-
- if (sensor->streaming && sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
- ret = -EBUSY;
- goto done;
- }
-
- /* Clamp the crop rectangle boundaries and align them to a multiple of 2
- * pixels to ensure a GRBG Bayer pattern.
- */
- rect.left = clamp(ALIGN(sel->r.left, 2), MT9M032_COLUMN_START_MIN,
- MT9M032_COLUMN_START_MAX);
- rect.top = clamp(ALIGN(sel->r.top, 2), MT9M032_ROW_START_MIN,
- MT9M032_ROW_START_MAX);
- rect.width = clamp_t(unsigned int, ALIGN(sel->r.width, 2),
- MT9M032_COLUMN_SIZE_MIN, MT9M032_COLUMN_SIZE_MAX);
- rect.height = clamp_t(unsigned int, ALIGN(sel->r.height, 2),
- MT9M032_ROW_SIZE_MIN, MT9M032_ROW_SIZE_MAX);
-
- rect.width = min_t(unsigned int, rect.width,
- MT9M032_PIXEL_ARRAY_WIDTH - rect.left);
- rect.height = min_t(unsigned int, rect.height,
- MT9M032_PIXEL_ARRAY_HEIGHT - rect.top);
-
- __crop = __mt9m032_get_pad_crop(sensor, sd_state, sel->which);
-
- if (rect.width != __crop->width || rect.height != __crop->height) {
- /* Reset the output image size if the crop rectangle size has
- * been modified.
- */
- format = __mt9m032_get_pad_format(sensor, sd_state,
- sel->which);
- format->width = rect.width;
- format->height = rect.height;
- }
-
- *__crop = rect;
- sel->r = rect;
-
- if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE)
- ret = mt9m032_update_geom_timing(sensor);
-
-done:
- mutex_unlock(&sensor->lock);
- return ret;
-}
-
-static int mt9m032_get_frame_interval(struct v4l2_subdev *subdev,
- struct v4l2_subdev_frame_interval *fi)
-{
- struct mt9m032 *sensor = to_mt9m032(subdev);
-
- mutex_lock(&sensor->lock);
- memset(fi, 0, sizeof(*fi));
- fi->interval = sensor->frame_interval;
- mutex_unlock(&sensor->lock);
-
- return 0;
-}
-
-static int mt9m032_set_frame_interval(struct v4l2_subdev *subdev,
- struct v4l2_subdev_frame_interval *fi)
-{
- struct mt9m032 *sensor = to_mt9m032(subdev);
- int ret;
-
- mutex_lock(&sensor->lock);
-
- if (sensor->streaming) {
- ret = -EBUSY;
- goto done;
- }
-
- /* Avoid divisions by 0. */
- if (fi->interval.denominator == 0)
- fi->interval.denominator = 1;
-
- ret = mt9m032_update_timing(sensor, &fi->interval);
- if (!ret)
- sensor->frame_interval = fi->interval;
-
-done:
- mutex_unlock(&sensor->lock);
- return ret;
-}
-
-static int mt9m032_s_stream(struct v4l2_subdev *subdev, int streaming)
-{
- struct mt9m032 *sensor = to_mt9m032(subdev);
- int ret;
-
- mutex_lock(&sensor->lock);
- ret = update_formatter2(sensor, streaming);
- if (!ret)
- sensor->streaming = streaming;
- mutex_unlock(&sensor->lock);
-
- return ret;
-}
-
-/* -----------------------------------------------------------------------------
- * V4L2 subdev core operations
- */
-
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int mt9m032_g_register(struct v4l2_subdev *sd,
- struct v4l2_dbg_register *reg)
-{
- struct mt9m032 *sensor = to_mt9m032(sd);
- struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
- int val;
-
- if (reg->reg > 0xff)
- return -EINVAL;
-
- val = mt9m032_read(client, reg->reg);
- if (val < 0)
- return -EIO;
-
- reg->size = 2;
- reg->val = val;
-
- return 0;
-}
-
-static int mt9m032_s_register(struct v4l2_subdev *sd,
- const struct v4l2_dbg_register *reg)
-{
- struct mt9m032 *sensor = to_mt9m032(sd);
- struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
-
- if (reg->reg > 0xff)
- return -EINVAL;
-
- return mt9m032_write(client, reg->reg, reg->val);
-}
-#endif
-
-/* -----------------------------------------------------------------------------
- * V4L2 subdev control operations
- */
-
-static int update_read_mode2(struct mt9m032 *sensor, bool vflip, bool hflip)
-{
- struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
- int reg_val = (vflip << MT9M032_READ_MODE2_VFLIP_SHIFT)
- | (hflip << MT9M032_READ_MODE2_HFLIP_SHIFT)
- | MT9M032_READ_MODE2_ROW_BLC
- | 0x0007;
-
- return mt9m032_write(client, MT9M032_READ_MODE2, reg_val);
-}
-
-static int mt9m032_set_gain(struct mt9m032 *sensor, s32 val)
-{
- struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
- int digital_gain_val; /* in 1/8th (0..127) */
- int analog_mul; /* 0 or 1 */
- int analog_gain_val; /* in 1/16th. (0..63) */
- u16 reg_val;
-
- digital_gain_val = 51; /* from setup example */
-
- if (val < 63) {
- analog_mul = 0;
- analog_gain_val = val;
- } else {
- analog_mul = 1;
- analog_gain_val = val / 2;
- }
-
- /* a_gain = (1 + analog_mul) + (analog_gain_val + 1) / 16 */
- /* overall_gain = a_gain * (1 + digital_gain_val / 8) */
-
- reg_val = ((digital_gain_val & MT9M032_GAIN_DIGITAL_MASK)
- << MT9M032_GAIN_DIGITAL_SHIFT)
- | ((analog_mul & 1) << MT9M032_GAIN_AMUL_SHIFT)
- | (analog_gain_val & MT9M032_GAIN_ANALOG_MASK);
-
- return mt9m032_write(client, MT9M032_GAIN_ALL, reg_val);
-}
-
-static int mt9m032_try_ctrl(struct v4l2_ctrl *ctrl)
-{
- if (ctrl->id == V4L2_CID_GAIN && ctrl->val >= 63) {
- /* round because of multiplier used for values >= 63 */
- ctrl->val &= ~1;
- }
-
- return 0;
-}
-
-static int mt9m032_set_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct mt9m032 *sensor =
- container_of(ctrl->handler, struct mt9m032, ctrls);
- struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
- int ret;
-
- switch (ctrl->id) {
- case V4L2_CID_GAIN:
- return mt9m032_set_gain(sensor, ctrl->val);
-
- case V4L2_CID_HFLIP:
- /* case V4L2_CID_VFLIP: -- In the same cluster */
- return update_read_mode2(sensor, sensor->vflip->val,
- sensor->hflip->val);
-
- case V4L2_CID_EXPOSURE:
- ret = mt9m032_write(client, MT9M032_SHUTTER_WIDTH_HIGH,
- (ctrl->val >> 16) & 0xffff);
- if (ret < 0)
- return ret;
-
- return mt9m032_write(client, MT9M032_SHUTTER_WIDTH_LOW,
- ctrl->val & 0xffff);
- }
-
- return 0;
-}
-
-static const struct v4l2_ctrl_ops mt9m032_ctrl_ops = {
- .s_ctrl = mt9m032_set_ctrl,
- .try_ctrl = mt9m032_try_ctrl,
-};
-
-/* -------------------------------------------------------------------------- */
-
-static const struct v4l2_subdev_core_ops mt9m032_core_ops = {
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- .g_register = mt9m032_g_register,
- .s_register = mt9m032_s_register,
-#endif
-};
-
-static const struct v4l2_subdev_video_ops mt9m032_video_ops = {
- .s_stream = mt9m032_s_stream,
- .g_frame_interval = mt9m032_get_frame_interval,
- .s_frame_interval = mt9m032_set_frame_interval,
-};
-
-static const struct v4l2_subdev_pad_ops mt9m032_pad_ops = {
- .enum_mbus_code = mt9m032_enum_mbus_code,
- .enum_frame_size = mt9m032_enum_frame_size,
- .get_fmt = mt9m032_get_pad_format,
- .set_fmt = mt9m032_set_pad_format,
- .set_selection = mt9m032_set_pad_selection,
- .get_selection = mt9m032_get_pad_selection,
-};
-
-static const struct v4l2_subdev_ops mt9m032_ops = {
- .core = &mt9m032_core_ops,
- .video = &mt9m032_video_ops,
- .pad = &mt9m032_pad_ops,
-};
-
-/* -----------------------------------------------------------------------------
- * Driver initialization and probing
- */
-
-static int mt9m032_probe(struct i2c_client *client)
-{
- struct mt9m032_platform_data *pdata = client->dev.platform_data;
- struct i2c_adapter *adapter = client->adapter;
- struct mt9m032 *sensor;
- int chip_version;
- int ret;
-
- if (pdata == NULL) {
- dev_err(&client->dev, "No platform data\n");
- return -EINVAL;
- }
-
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
- dev_warn(&client->dev,
- "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
- return -EIO;
- }
-
- if (!client->dev.platform_data)
- return -ENODEV;
-
- sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL);
- if (sensor == NULL)
- return -ENOMEM;
-
- mutex_init(&sensor->lock);
-
- sensor->pdata = pdata;
-
- v4l2_i2c_subdev_init(&sensor->subdev, client, &mt9m032_ops);
- sensor->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
-
- chip_version = mt9m032_read(client, MT9M032_CHIP_VERSION);
- if (chip_version != MT9M032_CHIP_VERSION_VALUE) {
- dev_err(&client->dev, "MT9M032 not detected, wrong version "
- "0x%04x\n", chip_version);
- ret = -ENODEV;
- goto error_sensor;
- }
-
- dev_info(&client->dev, "MT9M032 detected at address 0x%02x\n",
- client->addr);
-
- sensor->frame_interval.numerator = 1;
- sensor->frame_interval.denominator = 30;
-
- sensor->crop.left = MT9M032_COLUMN_START_DEF;
- sensor->crop.top = MT9M032_ROW_START_DEF;
- sensor->crop.width = MT9M032_COLUMN_SIZE_DEF;
- sensor->crop.height = MT9M032_ROW_SIZE_DEF;
-
- sensor->format.width = sensor->crop.width;
- sensor->format.height = sensor->crop.height;
- sensor->format.code = MEDIA_BUS_FMT_Y8_1X8;
- sensor->format.field = V4L2_FIELD_NONE;
- sensor->format.colorspace = V4L2_COLORSPACE_SRGB;
-
- v4l2_ctrl_handler_init(&sensor->ctrls, 5);
-
- v4l2_ctrl_new_std(&sensor->ctrls, &mt9m032_ctrl_ops,
- V4L2_CID_GAIN, 0, 127, 1, 64);
-
- sensor->hflip = v4l2_ctrl_new_std(&sensor->ctrls,
- &mt9m032_ctrl_ops,
- V4L2_CID_HFLIP, 0, 1, 1, 0);
- sensor->vflip = v4l2_ctrl_new_std(&sensor->ctrls,
- &mt9m032_ctrl_ops,
- V4L2_CID_VFLIP, 0, 1, 1, 0);
-
- v4l2_ctrl_new_std(&sensor->ctrls, &mt9m032_ctrl_ops,
- V4L2_CID_EXPOSURE, MT9M032_SHUTTER_WIDTH_MIN,
- MT9M032_SHUTTER_WIDTH_MAX, 1,
- MT9M032_SHUTTER_WIDTH_DEF);
- v4l2_ctrl_new_std(&sensor->ctrls, &mt9m032_ctrl_ops,
- V4L2_CID_PIXEL_RATE, pdata->pix_clock,
- pdata->pix_clock, 1, pdata->pix_clock);
-
- if (sensor->ctrls.error) {
- ret = sensor->ctrls.error;
- dev_err(&client->dev, "control initialization error %d\n", ret);
- goto error_ctrl;
- }
-
- v4l2_ctrl_cluster(2, &sensor->hflip);
-
- sensor->subdev.ctrl_handler = &sensor->ctrls;
- sensor->subdev.entity.function = MEDIA_ENT_F_CAM_SENSOR;
- sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
- ret = media_entity_pads_init(&sensor->subdev.entity, 1, &sensor->pad);
- if (ret < 0)
- goto error_ctrl;
-
- ret = mt9m032_write(client, MT9M032_RESET, 1); /* reset on */
- if (ret < 0)
- goto error_entity;
- ret = mt9m032_write(client, MT9M032_RESET, 0); /* reset off */
- if (ret < 0)
- goto error_entity;
-
- ret = mt9m032_setup_pll(sensor);
- if (ret < 0)
- goto error_entity;
- usleep_range(10000, 11000);
-
- ret = v4l2_ctrl_handler_setup(&sensor->ctrls);
- if (ret < 0)
- goto error_entity;
-
- /* SIZE */
- ret = mt9m032_update_geom_timing(sensor);
- if (ret < 0)
- goto error_entity;
-
- ret = mt9m032_write(client, 0x41, 0x0000); /* reserved !!! */
- if (ret < 0)
- goto error_entity;
- ret = mt9m032_write(client, 0x42, 0x0003); /* reserved !!! */
- if (ret < 0)
- goto error_entity;
- ret = mt9m032_write(client, 0x43, 0x0003); /* reserved !!! */
- if (ret < 0)
- goto error_entity;
- ret = mt9m032_write(client, 0x7f, 0x0000); /* reserved !!! */
- if (ret < 0)
- goto error_entity;
- if (sensor->pdata->invert_pixclock) {
- ret = mt9m032_write(client, MT9M032_PIX_CLK_CTRL,
- MT9M032_PIX_CLK_CTRL_INV_PIXCLK);
- if (ret < 0)
- goto error_entity;
- }
-
- ret = mt9m032_write(client, MT9M032_RESTART, 1); /* Restart on */
- if (ret < 0)
- goto error_entity;
- msleep(100);
- ret = mt9m032_write(client, MT9M032_RESTART, 0); /* Restart off */
- if (ret < 0)
- goto error_entity;
- msleep(100);
- ret = update_formatter2(sensor, false);
- if (ret < 0)
- goto error_entity;
-
- return ret;
-
-error_entity:
- media_entity_cleanup(&sensor->subdev.entity);
-error_ctrl:
- v4l2_ctrl_handler_free(&sensor->ctrls);
-error_sensor:
- mutex_destroy(&sensor->lock);
- return ret;
-}
-
-static void mt9m032_remove(struct i2c_client *client)
-{
- struct v4l2_subdev *subdev = i2c_get_clientdata(client);
- struct mt9m032 *sensor = to_mt9m032(subdev);
-
- v4l2_device_unregister_subdev(subdev);
- v4l2_ctrl_handler_free(&sensor->ctrls);
- media_entity_cleanup(&subdev->entity);
- mutex_destroy(&sensor->lock);
-}
-
-static const struct i2c_device_id mt9m032_id_table[] = {
- { MT9M032_NAME, 0 },
- { }
-};
-
-MODULE_DEVICE_TABLE(i2c, mt9m032_id_table);
-
-static struct i2c_driver mt9m032_i2c_driver = {
- .driver = {
- .name = MT9M032_NAME,
- },
- .probe_new = mt9m032_probe,
- .remove = mt9m032_remove,
- .id_table = mt9m032_id_table,
-};
-
-module_i2c_driver(mt9m032_i2c_driver);
-
-MODULE_AUTHOR("Martin Hostettler <martin@neutronstar.dyndns.org>");
-MODULE_DESCRIPTION("MT9M032 camera sensor driver");
-MODULE_LICENSE("GPL v2");
projects / linux.git / commitdiff