+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * V4L2 subdevice driver for OmniVision OV6650 Camera Sensor
- *
- * Copyright (C) 2010 Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
- *
- * Based on OmniVision OV96xx Camera Driver
- * Copyright (C) 2009 Marek Vasut <marek.vasut@gmail.com>
- *
- * Based on ov772x camera driver:
- * Copyright (C) 2008 Renesas Solutions Corp.
- * Kuninori Morimoto <morimoto.kuninori@renesas.com>
- *
- * Based on ov7670 and soc_camera_platform driver,
- * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
- * Copyright (C) 2008 Magnus Damm
- * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
- *
- * Hardware specific bits initially based on former work by Matt Callow
- * drivers/media/video/omap/sensor_ov6650.c
- * Copyright (C) 2006 Matt Callow
- */
-
-#include <linux/bitops.h>
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/i2c.h>
-#include <linux/slab.h>
-#include <linux/v4l2-mediabus.h>
-#include <linux/module.h>
-
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-device.h>
-
-/* Register definitions */
-#define REG_GAIN 0x00 /* range 00 - 3F */
-#define REG_BLUE 0x01
-#define REG_RED 0x02
-#define REG_SAT 0x03 /* [7:4] saturation [0:3] reserved */
-#define REG_HUE 0x04 /* [7:6] rsrvd [5] hue en [4:0] hue */
-
-#define REG_BRT 0x06
-
-#define REG_PIDH 0x0a
-#define REG_PIDL 0x0b
-
-#define REG_AECH 0x10
-#define REG_CLKRC 0x11 /* Data Format and Internal Clock */
- /* [7:6] Input system clock (MHz)*/
- /* 00=8, 01=12, 10=16, 11=24 */
- /* [5:0]: Internal Clock Pre-Scaler */
-#define REG_COMA 0x12 /* [7] Reset */
-#define REG_COMB 0x13
-#define REG_COMC 0x14
-#define REG_COMD 0x15
-#define REG_COML 0x16
-#define REG_HSTRT 0x17
-#define REG_HSTOP 0x18
-#define REG_VSTRT 0x19
-#define REG_VSTOP 0x1a
-#define REG_PSHFT 0x1b
-#define REG_MIDH 0x1c
-#define REG_MIDL 0x1d
-#define REG_HSYNS 0x1e
-#define REG_HSYNE 0x1f
-#define REG_COME 0x20
-#define REG_YOFF 0x21
-#define REG_UOFF 0x22
-#define REG_VOFF 0x23
-#define REG_AEW 0x24
-#define REG_AEB 0x25
-#define REG_COMF 0x26
-#define REG_COMG 0x27
-#define REG_COMH 0x28
-#define REG_COMI 0x29
-
-#define REG_FRARL 0x2b
-#define REG_COMJ 0x2c
-#define REG_COMK 0x2d
-#define REG_AVGY 0x2e
-#define REG_REF0 0x2f
-#define REG_REF1 0x30
-#define REG_REF2 0x31
-#define REG_FRAJH 0x32
-#define REG_FRAJL 0x33
-#define REG_FACT 0x34
-#define REG_L1AEC 0x35
-#define REG_AVGU 0x36
-#define REG_AVGV 0x37
-
-#define REG_SPCB 0x60
-#define REG_SPCC 0x61
-#define REG_GAM1 0x62
-#define REG_GAM2 0x63
-#define REG_GAM3 0x64
-#define REG_SPCD 0x65
-
-#define REG_SPCE 0x68
-#define REG_ADCL 0x69
-
-#define REG_RMCO 0x6c
-#define REG_GMCO 0x6d
-#define REG_BMCO 0x6e
-
-
-/* Register bits, values, etc. */
-#define OV6650_PIDH 0x66 /* high byte of product ID number */
-#define OV6650_PIDL 0x50 /* low byte of product ID number */
-#define OV6650_MIDH 0x7F /* high byte of mfg ID */
-#define OV6650_MIDL 0xA2 /* low byte of mfg ID */
-
-#define DEF_GAIN 0x00
-#define DEF_BLUE 0x80
-#define DEF_RED 0x80
-
-#define SAT_SHIFT 4
-#define SAT_MASK (0xf << SAT_SHIFT)
-#define SET_SAT(x) (((x) << SAT_SHIFT) & SAT_MASK)
-
-#define HUE_EN BIT(5)
-#define HUE_MASK 0x1f
-#define DEF_HUE 0x10
-#define SET_HUE(x) (HUE_EN | ((x) & HUE_MASK))
-
-#define DEF_AECH 0x4D
-
-#define CLKRC_8MHz 0x00
-#define CLKRC_12MHz 0x40
-#define CLKRC_16MHz 0x80
-#define CLKRC_24MHz 0xc0
-#define CLKRC_DIV_MASK 0x3f
-#define GET_CLKRC_DIV(x) (((x) & CLKRC_DIV_MASK) + 1)
-#define DEF_CLKRC 0x00
-
-#define COMA_RESET BIT(7)
-#define COMA_QCIF BIT(5)
-#define COMA_RAW_RGB BIT(4)
-#define COMA_RGB BIT(3)
-#define COMA_BW BIT(2)
-#define COMA_WORD_SWAP BIT(1)
-#define COMA_BYTE_SWAP BIT(0)
-#define DEF_COMA 0x00
-
-#define COMB_FLIP_V BIT(7)
-#define COMB_FLIP_H BIT(5)
-#define COMB_BAND_FILTER BIT(4)
-#define COMB_AWB BIT(2)
-#define COMB_AGC BIT(1)
-#define COMB_AEC BIT(0)
-#define DEF_COMB 0x5f
-
-#define COML_ONE_CHANNEL BIT(7)
-
-#define DEF_HSTRT 0x24
-#define DEF_HSTOP 0xd4
-#define DEF_VSTRT 0x04
-#define DEF_VSTOP 0x94
-
-#define COMF_HREF_LOW BIT(4)
-
-#define COMJ_PCLK_RISING BIT(4)
-#define COMJ_VSYNC_HIGH BIT(0)
-
-/* supported resolutions */
-#define W_QCIF (DEF_HSTOP - DEF_HSTRT)
-#define W_CIF (W_QCIF << 1)
-#define H_QCIF (DEF_VSTOP - DEF_VSTRT)
-#define H_CIF (H_QCIF << 1)
-
-#define FRAME_RATE_MAX 30
-
-
-struct ov6650_reg {
- u8 reg;
- u8 val;
-};
-
-struct ov6650 {
- struct v4l2_subdev subdev;
- struct v4l2_ctrl_handler hdl;
- struct {
- /* exposure/autoexposure cluster */
- struct v4l2_ctrl *autoexposure;
- struct v4l2_ctrl *exposure;
- };
- struct {
- /* gain/autogain cluster */
- struct v4l2_ctrl *autogain;
- struct v4l2_ctrl *gain;
- };
- struct {
- /* blue/red/autowhitebalance cluster */
- struct v4l2_ctrl *autowb;
- struct v4l2_ctrl *blue;
- struct v4l2_ctrl *red;
- };
- struct clk *clk;
- bool half_scale; /* scale down output by 2 */
- struct v4l2_rect rect; /* sensor cropping window */
- struct v4l2_fract tpf; /* as requested with set_frame_interval */
- u32 code;
-};
-
-struct ov6650_xclk {
- unsigned long rate;
- u8 clkrc;
-};
-
-static const struct ov6650_xclk ov6650_xclk[] = {
-{
- .rate = 8000000,
- .clkrc = CLKRC_8MHz,
-},
-{
- .rate = 12000000,
- .clkrc = CLKRC_12MHz,
-},
-{
- .rate = 16000000,
- .clkrc = CLKRC_16MHz,
-},
-{
- .rate = 24000000,
- .clkrc = CLKRC_24MHz,
-},
-};
-
-static u32 ov6650_codes[] = {
- MEDIA_BUS_FMT_YUYV8_2X8,
- MEDIA_BUS_FMT_UYVY8_2X8,
- MEDIA_BUS_FMT_YVYU8_2X8,
- MEDIA_BUS_FMT_VYUY8_2X8,
- MEDIA_BUS_FMT_SBGGR8_1X8,
- MEDIA_BUS_FMT_Y8_1X8,
-};
-
-static const struct v4l2_mbus_framefmt ov6650_def_fmt = {
- .width = W_CIF,
- .height = H_CIF,
- .code = MEDIA_BUS_FMT_SBGGR8_1X8,
- .colorspace = V4L2_COLORSPACE_SRGB,
- .field = V4L2_FIELD_NONE,
- .ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT,
- .quantization = V4L2_QUANTIZATION_DEFAULT,
- .xfer_func = V4L2_XFER_FUNC_DEFAULT,
-};
-
-/* read a register */
-static int ov6650_reg_read(struct i2c_client *client, u8 reg, u8 *val)
-{
- int ret;
- u8 data = reg;
- struct i2c_msg msg = {
- .addr = client->addr,
- .flags = 0,
- .len = 1,
- .buf = &data,
- };
-
- ret = i2c_transfer(client->adapter, &msg, 1);
- if (ret < 0)
- goto err;
-
- msg.flags = I2C_M_RD;
- ret = i2c_transfer(client->adapter, &msg, 1);
- if (ret < 0)
- goto err;
-
- *val = data;
- return 0;
-
-err:
- dev_err(&client->dev, "Failed reading register 0x%02x!\n", reg);
- return ret;
-}
-
-/* write a register */
-static int ov6650_reg_write(struct i2c_client *client, u8 reg, u8 val)
-{
- int ret;
- unsigned char data[2] = { reg, val };
- struct i2c_msg msg = {
- .addr = client->addr,
- .flags = 0,
- .len = 2,
- .buf = data,
- };
-
- ret = i2c_transfer(client->adapter, &msg, 1);
- udelay(100);
-
- if (ret < 0) {
- dev_err(&client->dev, "Failed writing register 0x%02x!\n", reg);
- return ret;
- }
- return 0;
-}
-
-
-/* Read a register, alter its bits, write it back */
-static int ov6650_reg_rmw(struct i2c_client *client, u8 reg, u8 set, u8 mask)
-{
- u8 val;
- int ret;
-
- ret = ov6650_reg_read(client, reg, &val);
- if (ret) {
- dev_err(&client->dev,
- "[Read]-Modify-Write of register 0x%02x failed!\n",
- reg);
- return ret;
- }
-
- val &= ~mask;
- val |= set;
-
- ret = ov6650_reg_write(client, reg, val);
- if (ret)
- dev_err(&client->dev,
- "Read-Modify-[Write] of register 0x%02x failed!\n",
- reg);
-
- return ret;
-}
-
-static struct ov6650 *to_ov6650(const struct i2c_client *client)
-{
- return container_of(i2c_get_clientdata(client), struct ov6650, subdev);
-}
-
-/* Start/Stop streaming from the device */
-static int ov6650_s_stream(struct v4l2_subdev *sd, int enable)
-{
- return 0;
-}
-
-/* Get status of additional camera capabilities */
-static int ov6550_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct ov6650 *priv = container_of(ctrl->handler, struct ov6650, hdl);
- struct v4l2_subdev *sd = &priv->subdev;
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- uint8_t reg, reg2;
- int ret;
-
- switch (ctrl->id) {
- case V4L2_CID_AUTOGAIN:
- ret = ov6650_reg_read(client, REG_GAIN, ®);
- if (!ret)
- priv->gain->val = reg;
- return ret;
- case V4L2_CID_AUTO_WHITE_BALANCE:
- ret = ov6650_reg_read(client, REG_BLUE, ®);
- if (!ret)
- ret = ov6650_reg_read(client, REG_RED, ®2);
- if (!ret) {
- priv->blue->val = reg;
- priv->red->val = reg2;
- }
- return ret;
- case V4L2_CID_EXPOSURE_AUTO:
- ret = ov6650_reg_read(client, REG_AECH, ®);
- if (!ret)
- priv->exposure->val = reg;
- return ret;
- }
- return -EINVAL;
-}
-
-/* Set status of additional camera capabilities */
-static int ov6550_s_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct ov6650 *priv = container_of(ctrl->handler, struct ov6650, hdl);
- struct v4l2_subdev *sd = &priv->subdev;
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- int ret;
-
- switch (ctrl->id) {
- case V4L2_CID_AUTOGAIN:
- ret = ov6650_reg_rmw(client, REG_COMB,
- ctrl->val ? COMB_AGC : 0, COMB_AGC);
- if (!ret && !ctrl->val)
- ret = ov6650_reg_write(client, REG_GAIN, priv->gain->val);
- return ret;
- case V4L2_CID_AUTO_WHITE_BALANCE:
- ret = ov6650_reg_rmw(client, REG_COMB,
- ctrl->val ? COMB_AWB : 0, COMB_AWB);
- if (!ret && !ctrl->val) {
- ret = ov6650_reg_write(client, REG_BLUE, priv->blue->val);
- if (!ret)
- ret = ov6650_reg_write(client, REG_RED,
- priv->red->val);
- }
- return ret;
- case V4L2_CID_SATURATION:
- return ov6650_reg_rmw(client, REG_SAT, SET_SAT(ctrl->val),
- SAT_MASK);
- case V4L2_CID_HUE:
- return ov6650_reg_rmw(client, REG_HUE, SET_HUE(ctrl->val),
- HUE_MASK);
- case V4L2_CID_BRIGHTNESS:
- return ov6650_reg_write(client, REG_BRT, ctrl->val);
- case V4L2_CID_EXPOSURE_AUTO:
- ret = ov6650_reg_rmw(client, REG_COMB, ctrl->val ==
- V4L2_EXPOSURE_AUTO ? COMB_AEC : 0, COMB_AEC);
- if (!ret && ctrl->val == V4L2_EXPOSURE_MANUAL)
- ret = ov6650_reg_write(client, REG_AECH,
- priv->exposure->val);
- return ret;
- case V4L2_CID_GAMMA:
- return ov6650_reg_write(client, REG_GAM1, ctrl->val);
- case V4L2_CID_VFLIP:
- return ov6650_reg_rmw(client, REG_COMB,
- ctrl->val ? COMB_FLIP_V : 0, COMB_FLIP_V);
- case V4L2_CID_HFLIP:
- return ov6650_reg_rmw(client, REG_COMB,
- ctrl->val ? COMB_FLIP_H : 0, COMB_FLIP_H);
- }
-
- return -EINVAL;
-}
-
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int ov6650_get_register(struct v4l2_subdev *sd,
- struct v4l2_dbg_register *reg)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- int ret;
- u8 val;
-
- if (reg->reg & ~0xff)
- return -EINVAL;
-
- reg->size = 1;
-
- ret = ov6650_reg_read(client, reg->reg, &val);
- if (!ret)
- reg->val = (__u64)val;
-
- return ret;
-}
-
-static int ov6650_set_register(struct v4l2_subdev *sd,
- const struct v4l2_dbg_register *reg)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
-
- if (reg->reg & ~0xff || reg->val & ~0xff)
- return -EINVAL;
-
- return ov6650_reg_write(client, reg->reg, reg->val);
-}
-#endif
-
-static int ov6650_s_power(struct v4l2_subdev *sd, int on)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
- int ret = 0;
-
- if (on)
- ret = clk_prepare_enable(priv->clk);
- else
- clk_disable_unprepare(priv->clk);
-
- return ret;
-}
-
-static int ov6650_get_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_selection *sel)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
- struct v4l2_rect *rect;
-
- if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
- /* pre-select try crop rectangle */
- rect = v4l2_subdev_state_get_crop(sd_state, 0);
-
- } else {
- /* pre-select active crop rectangle */
- rect = &priv->rect;
- }
-
- switch (sel->target) {
- case V4L2_SEL_TGT_CROP_BOUNDS:
- sel->r.left = DEF_HSTRT << 1;
- sel->r.top = DEF_VSTRT << 1;
- sel->r.width = W_CIF;
- sel->r.height = H_CIF;
- return 0;
-
- case V4L2_SEL_TGT_CROP:
- /* use selected crop rectangle */
- sel->r = *rect;
- return 0;
-
- default:
- return -EINVAL;
- }
-}
-
-static bool is_unscaled_ok(int width, int height, struct v4l2_rect *rect)
-{
- return width > rect->width >> 1 || height > rect->height >> 1;
-}
-
-static void ov6650_bind_align_crop_rectangle(struct v4l2_rect *rect)
-{
- v4l_bound_align_image(&rect->width, 2, W_CIF, 1,
- &rect->height, 2, H_CIF, 1, 0);
- v4l_bound_align_image(&rect->left, DEF_HSTRT << 1,
- (DEF_HSTRT << 1) + W_CIF - (__s32)rect->width, 1,
- &rect->top, DEF_VSTRT << 1,
- (DEF_VSTRT << 1) + H_CIF - (__s32)rect->height,
- 1, 0);
-}
-
-static int ov6650_set_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_selection *sel)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
- int ret;
-
- if (sel->target != V4L2_SEL_TGT_CROP)
- return -EINVAL;
-
- ov6650_bind_align_crop_rectangle(&sel->r);
-
- if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
- struct v4l2_rect *crop =
- v4l2_subdev_state_get_crop(sd_state, 0);
- struct v4l2_mbus_framefmt *mf =
- v4l2_subdev_state_get_format(sd_state, 0);
- /* detect current pad config scaling factor */
- bool half_scale = !is_unscaled_ok(mf->width, mf->height, crop);
-
- /* store new crop rectangle */
- *crop = sel->r;
-
- /* adjust frame size */
- mf->width = crop->width >> half_scale;
- mf->height = crop->height >> half_scale;
-
- return 0;
- }
-
- /* V4L2_SUBDEV_FORMAT_ACTIVE */
-
- /* apply new crop rectangle */
- ret = ov6650_reg_write(client, REG_HSTRT, sel->r.left >> 1);
- if (!ret) {
- priv->rect.width += priv->rect.left - sel->r.left;
- priv->rect.left = sel->r.left;
- ret = ov6650_reg_write(client, REG_HSTOP,
- (sel->r.left + sel->r.width) >> 1);
- }
- if (!ret) {
- priv->rect.width = sel->r.width;
- ret = ov6650_reg_write(client, REG_VSTRT, sel->r.top >> 1);
- }
- if (!ret) {
- priv->rect.height += priv->rect.top - sel->r.top;
- priv->rect.top = sel->r.top;
- ret = ov6650_reg_write(client, REG_VSTOP,
- (sel->r.top + sel->r.height) >> 1);
- }
- if (!ret)
- priv->rect.height = sel->r.height;
-
- return ret;
-}
-
-static int ov6650_get_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *format)
-{
- struct v4l2_mbus_framefmt *mf = &format->format;
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
-
- if (format->pad)
- return -EINVAL;
-
- /* initialize response with default media bus frame format */
- *mf = ov6650_def_fmt;
-
- /* update media bus format code and frame size */
- if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
- struct v4l2_mbus_framefmt *try_fmt =
- v4l2_subdev_state_get_format(sd_state, 0);
-
- mf->width = try_fmt->width;
- mf->height = try_fmt->height;
- mf->code = try_fmt->code;
-
- } else {
- mf->width = priv->rect.width >> priv->half_scale;
- mf->height = priv->rect.height >> priv->half_scale;
- mf->code = priv->code;
- }
- return 0;
-}
-
-#define to_clkrc(div) ((div) - 1)
-
-/* set the format we will capture in */
-static int ov6650_s_fmt(struct v4l2_subdev *sd, u32 code, bool half_scale)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
- u8 coma_set = 0, coma_mask = 0, coml_set, coml_mask;
- int ret;
-
- /* select color matrix configuration for given color encoding */
- switch (code) {
- case MEDIA_BUS_FMT_Y8_1X8:
- dev_dbg(&client->dev, "pixel format GREY8_1X8\n");
- coma_mask |= COMA_RGB | COMA_WORD_SWAP | COMA_BYTE_SWAP;
- coma_set |= COMA_BW;
- break;
- case MEDIA_BUS_FMT_YUYV8_2X8:
- dev_dbg(&client->dev, "pixel format YUYV8_2X8_LE\n");
- coma_mask |= COMA_RGB | COMA_BW | COMA_BYTE_SWAP;
- coma_set |= COMA_WORD_SWAP;
- break;
- case MEDIA_BUS_FMT_YVYU8_2X8:
- dev_dbg(&client->dev, "pixel format YVYU8_2X8_LE (untested)\n");
- coma_mask |= COMA_RGB | COMA_BW | COMA_WORD_SWAP |
- COMA_BYTE_SWAP;
- break;
- case MEDIA_BUS_FMT_UYVY8_2X8:
- dev_dbg(&client->dev, "pixel format YUYV8_2X8_BE\n");
- if (half_scale) {
- coma_mask |= COMA_RGB | COMA_BW | COMA_WORD_SWAP;
- coma_set |= COMA_BYTE_SWAP;
- } else {
- coma_mask |= COMA_RGB | COMA_BW;
- coma_set |= COMA_BYTE_SWAP | COMA_WORD_SWAP;
- }
- break;
- case MEDIA_BUS_FMT_VYUY8_2X8:
- dev_dbg(&client->dev, "pixel format YVYU8_2X8_BE (untested)\n");
- if (half_scale) {
- coma_mask |= COMA_RGB | COMA_BW;
- coma_set |= COMA_BYTE_SWAP | COMA_WORD_SWAP;
- } else {
- coma_mask |= COMA_RGB | COMA_BW | COMA_WORD_SWAP;
- coma_set |= COMA_BYTE_SWAP;
- }
- break;
- case MEDIA_BUS_FMT_SBGGR8_1X8:
- dev_dbg(&client->dev, "pixel format SBGGR8_1X8 (untested)\n");
- coma_mask |= COMA_BW | COMA_BYTE_SWAP | COMA_WORD_SWAP;
- coma_set |= COMA_RAW_RGB | COMA_RGB;
- break;
- default:
- dev_err(&client->dev, "Pixel format not handled: 0x%x\n", code);
- return -EINVAL;
- }
-
- if (code == MEDIA_BUS_FMT_Y8_1X8 ||
- code == MEDIA_BUS_FMT_SBGGR8_1X8) {
- coml_mask = COML_ONE_CHANNEL;
- coml_set = 0;
- } else {
- coml_mask = 0;
- coml_set = COML_ONE_CHANNEL;
- }
-
- if (half_scale) {
- dev_dbg(&client->dev, "max resolution: QCIF\n");
- coma_set |= COMA_QCIF;
- } else {
- dev_dbg(&client->dev, "max resolution: CIF\n");
- coma_mask |= COMA_QCIF;
- }
-
- ret = ov6650_reg_rmw(client, REG_COMA, coma_set, coma_mask);
- if (!ret) {
- priv->half_scale = half_scale;
-
- ret = ov6650_reg_rmw(client, REG_COML, coml_set, coml_mask);
- }
- if (!ret)
- priv->code = code;
-
- return ret;
-}
-
-static int ov6650_set_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *format)
-{
- struct v4l2_mbus_framefmt *mf = &format->format;
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
- struct v4l2_rect *crop;
- bool half_scale;
-
- if (format->pad)
- return -EINVAL;
-
- switch (mf->code) {
- case MEDIA_BUS_FMT_Y10_1X10:
- mf->code = MEDIA_BUS_FMT_Y8_1X8;
- fallthrough;
- case MEDIA_BUS_FMT_Y8_1X8:
- case MEDIA_BUS_FMT_YVYU8_2X8:
- case MEDIA_BUS_FMT_YUYV8_2X8:
- case MEDIA_BUS_FMT_VYUY8_2X8:
- case MEDIA_BUS_FMT_UYVY8_2X8:
- break;
- default:
- mf->code = MEDIA_BUS_FMT_SBGGR8_1X8;
- fallthrough;
- case MEDIA_BUS_FMT_SBGGR8_1X8:
- break;
- }
-
- if (format->which == V4L2_SUBDEV_FORMAT_TRY)
- crop = v4l2_subdev_state_get_crop(sd_state, 0);
- else
- crop = &priv->rect;
-
- half_scale = !is_unscaled_ok(mf->width, mf->height, crop);
-
- if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
- struct v4l2_mbus_framefmt *try_fmt =
- v4l2_subdev_state_get_format(sd_state, 0);
-
- /* store new mbus frame format code and size in pad config */
- try_fmt->width = crop->width >> half_scale;
- try_fmt->height = crop->height >> half_scale;
- try_fmt->code = mf->code;
-
- /* return default mbus frame format updated with pad config */
- *mf = ov6650_def_fmt;
- mf->width = try_fmt->width;
- mf->height = try_fmt->height;
- mf->code = try_fmt->code;
-
- } else {
- int ret = 0;
-
- /* apply new media bus frame format and scaling if changed */
- if (mf->code != priv->code || half_scale != priv->half_scale)
- ret = ov6650_s_fmt(sd, mf->code, half_scale);
- if (ret)
- return ret;
-
- /* return default format updated with active size and code */
- *mf = ov6650_def_fmt;
- mf->width = priv->rect.width >> priv->half_scale;
- mf->height = priv->rect.height >> priv->half_scale;
- mf->code = priv->code;
- }
- return 0;
-}
-
-static int ov6650_enum_mbus_code(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_mbus_code_enum *code)
-{
- if (code->pad || code->index >= ARRAY_SIZE(ov6650_codes))
- return -EINVAL;
-
- code->code = ov6650_codes[code->index];
- return 0;
-}
-
-static int ov6650_enum_frame_interval(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_frame_interval_enum *fie)
-{
- int i;
-
- /* enumerate supported frame intervals not exceeding 1 second */
- if (fie->index > CLKRC_DIV_MASK ||
- GET_CLKRC_DIV(fie->index) > FRAME_RATE_MAX)
- return -EINVAL;
-
- for (i = 0; i < ARRAY_SIZE(ov6650_codes); i++)
- if (fie->code == ov6650_codes[i])
- break;
- if (i == ARRAY_SIZE(ov6650_codes))
- return -EINVAL;
-
- if (!fie->width || fie->width > W_CIF ||
- !fie->height || fie->height > H_CIF)
- return -EINVAL;
-
- fie->interval.numerator = GET_CLKRC_DIV(fie->index);
- fie->interval.denominator = FRAME_RATE_MAX;
-
- return 0;
-}
-
-static int ov6650_get_frame_interval(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_frame_interval *ival)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
-
- /*
- * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
- * subdev active state API.
- */
- if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
- return -EINVAL;
-
- ival->interval = priv->tpf;
-
- dev_dbg(&client->dev, "Frame interval: %u/%u s\n",
- ival->interval.numerator, ival->interval.denominator);
-
- return 0;
-}
-
-static int ov6650_set_frame_interval(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_frame_interval *ival)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
- struct v4l2_fract *tpf = &ival->interval;
- int div, ret;
-
- /*
- * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
- * subdev active state API.
- */
- if (ival->which != V4L2_SUBDEV_FORMAT_ACTIVE)
- return -EINVAL;
-
- if (tpf->numerator == 0 || tpf->denominator == 0)
- div = 1; /* Reset to full rate */
- else
- div = (tpf->numerator * FRAME_RATE_MAX) / tpf->denominator;
-
- if (div == 0)
- div = 1;
- else if (div > GET_CLKRC_DIV(CLKRC_DIV_MASK))
- div = GET_CLKRC_DIV(CLKRC_DIV_MASK);
-
- ret = ov6650_reg_rmw(client, REG_CLKRC, to_clkrc(div), CLKRC_DIV_MASK);
- if (!ret) {
- priv->tpf.numerator = div;
- priv->tpf.denominator = FRAME_RATE_MAX;
-
- *tpf = priv->tpf;
- }
-
- return ret;
-}
-
-/* Soft reset the camera. This has nothing to do with the RESET pin! */
-static int ov6650_reset(struct i2c_client *client)
-{
- int ret;
-
- dev_dbg(&client->dev, "reset\n");
-
- ret = ov6650_reg_rmw(client, REG_COMA, COMA_RESET, 0);
- if (ret)
- dev_err(&client->dev,
- "An error occurred while entering soft reset!\n");
-
- return ret;
-}
-
-/* program default register values */
-static int ov6650_prog_dflt(struct i2c_client *client, u8 clkrc)
-{
- int ret;
-
- dev_dbg(&client->dev, "initializing\n");
-
- ret = ov6650_reg_write(client, REG_COMA, 0); /* ~COMA_RESET */
- if (!ret)
- ret = ov6650_reg_write(client, REG_CLKRC, clkrc);
- if (!ret)
- ret = ov6650_reg_rmw(client, REG_COMB, 0, COMB_BAND_FILTER);
-
- return ret;
-}
-
-static int ov6650_video_probe(struct v4l2_subdev *sd)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
- const struct ov6650_xclk *xclk = NULL;
- unsigned long rate;
- u8 pidh, pidl, midh, midl;
- int i, ret = 0;
-
- priv->clk = devm_v4l2_sensor_clk_get(&client->dev, NULL);
- if (IS_ERR(priv->clk))
- return dev_err_probe(&client->dev, PTR_ERR(priv->clk),
- "clk request err\n");
-
- rate = clk_get_rate(priv->clk);
- for (i = 0; rate && i < ARRAY_SIZE(ov6650_xclk); i++) {
- if (rate != ov6650_xclk[i].rate)
- continue;
-
- xclk = &ov6650_xclk[i];
- dev_info(&client->dev, "using host default clock rate %lukHz\n",
- rate / 1000);
- break;
- }
- for (i = 0; !xclk && i < ARRAY_SIZE(ov6650_xclk); i++) {
- ret = clk_set_rate(priv->clk, ov6650_xclk[i].rate);
- if (ret || clk_get_rate(priv->clk) != ov6650_xclk[i].rate)
- continue;
-
- xclk = &ov6650_xclk[i];
- dev_info(&client->dev, "using negotiated clock rate %lukHz\n",
- xclk->rate / 1000);
- break;
- }
- if (!xclk) {
- dev_err(&client->dev, "unable to get supported clock rate\n");
- if (!ret)
- ret = -EINVAL;
- return ret;
- }
-
- ret = ov6650_s_power(sd, 1);
- if (ret < 0)
- return ret;
-
- msleep(20);
-
- /*
- * check and show product ID and manufacturer ID
- */
- ret = ov6650_reg_read(client, REG_PIDH, &pidh);
- if (!ret)
- ret = ov6650_reg_read(client, REG_PIDL, &pidl);
- if (!ret)
- ret = ov6650_reg_read(client, REG_MIDH, &midh);
- if (!ret)
- ret = ov6650_reg_read(client, REG_MIDL, &midl);
-
- if (ret)
- goto done;
-
- if ((pidh != OV6650_PIDH) || (pidl != OV6650_PIDL)) {
- dev_err(&client->dev, "Product ID error 0x%02x:0x%02x\n",
- pidh, pidl);
- ret = -ENODEV;
- goto done;
- }
-
- dev_info(&client->dev,
- "ov6650 Product ID 0x%02x:0x%02x Manufacturer ID 0x%02x:0x%02x\n",
- pidh, pidl, midh, midl);
-
- ret = ov6650_reset(client);
- if (!ret)
- ret = ov6650_prog_dflt(client, xclk->clkrc);
- if (!ret) {
- /* driver default frame format, no scaling */
- ret = ov6650_s_fmt(sd, ov6650_def_fmt.code, false);
- }
- if (!ret)
- ret = v4l2_ctrl_handler_setup(&priv->hdl);
-
-done:
- ov6650_s_power(sd, 0);
- return ret;
-}
-
-static const struct v4l2_ctrl_ops ov6550_ctrl_ops = {
- .g_volatile_ctrl = ov6550_g_volatile_ctrl,
- .s_ctrl = ov6550_s_ctrl,
-};
-
-static const struct v4l2_subdev_core_ops ov6650_core_ops = {
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- .g_register = ov6650_get_register,
- .s_register = ov6650_set_register,
-#endif
- .s_power = ov6650_s_power,
-};
-
-/* Request bus settings on camera side */
-static int ov6650_get_mbus_config(struct v4l2_subdev *sd,
- unsigned int pad,
- struct v4l2_mbus_config *cfg)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- u8 comj, comf;
- int ret;
-
- ret = ov6650_reg_read(client, REG_COMJ, &comj);
- if (ret)
- return ret;
-
- ret = ov6650_reg_read(client, REG_COMF, &comf);
- if (ret)
- return ret;
-
- cfg->type = V4L2_MBUS_PARALLEL;
-
- cfg->bus.parallel.flags = V4L2_MBUS_MASTER | V4L2_MBUS_DATA_ACTIVE_HIGH
- | ((comj & COMJ_VSYNC_HIGH) ? V4L2_MBUS_VSYNC_ACTIVE_HIGH
- : V4L2_MBUS_VSYNC_ACTIVE_LOW)
- | ((comf & COMF_HREF_LOW) ? V4L2_MBUS_HSYNC_ACTIVE_LOW
- : V4L2_MBUS_HSYNC_ACTIVE_HIGH)
- | ((comj & COMJ_PCLK_RISING) ? V4L2_MBUS_PCLK_SAMPLE_RISING
- : V4L2_MBUS_PCLK_SAMPLE_FALLING);
- return 0;
-}
-
-static const struct v4l2_subdev_video_ops ov6650_video_ops = {
- .s_stream = ov6650_s_stream,
-};
-
-static const struct v4l2_subdev_pad_ops ov6650_pad_ops = {
- .enum_mbus_code = ov6650_enum_mbus_code,
- .enum_frame_interval = ov6650_enum_frame_interval,
- .get_selection = ov6650_get_selection,
- .set_selection = ov6650_set_selection,
- .get_fmt = ov6650_get_fmt,
- .set_fmt = ov6650_set_fmt,
- .get_frame_interval = ov6650_get_frame_interval,
- .set_frame_interval = ov6650_set_frame_interval,
- .get_mbus_config = ov6650_get_mbus_config,
-};
-
-static const struct v4l2_subdev_ops ov6650_subdev_ops = {
- .core = &ov6650_core_ops,
- .video = &ov6650_video_ops,
- .pad = &ov6650_pad_ops,
-};
-
-static const struct v4l2_subdev_internal_ops ov6650_internal_ops = {
- .registered = ov6650_video_probe,
-};
-
-/*
- * i2c_driver function
- */
-static int ov6650_probe(struct i2c_client *client)
-{
- struct ov6650 *priv;
- int ret;
-
- priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- v4l2_i2c_subdev_init(&priv->subdev, client, &ov6650_subdev_ops);
- v4l2_ctrl_handler_init(&priv->hdl, 13);
- v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_VFLIP, 0, 1, 1, 0);
- v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_HFLIP, 0, 1, 1, 0);
- priv->autogain = v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
- priv->gain = v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_GAIN, 0, 0x3f, 1, DEF_GAIN);
- priv->autowb = v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
- priv->blue = v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_BLUE_BALANCE, 0, 0xff, 1, DEF_BLUE);
- priv->red = v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_RED_BALANCE, 0, 0xff, 1, DEF_RED);
- v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_SATURATION, 0, 0xf, 1, 0x8);
- v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_HUE, 0, HUE_MASK, 1, DEF_HUE);
- v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_BRIGHTNESS, 0, 0xff, 1, 0x80);
- priv->autoexposure = v4l2_ctrl_new_std_menu(&priv->hdl,
- &ov6550_ctrl_ops, V4L2_CID_EXPOSURE_AUTO,
- V4L2_EXPOSURE_MANUAL, 0, V4L2_EXPOSURE_AUTO);
- priv->exposure = v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_EXPOSURE, 0, 0xff, 1, DEF_AECH);
- v4l2_ctrl_new_std(&priv->hdl, &ov6550_ctrl_ops,
- V4L2_CID_GAMMA, 0, 0xff, 1, 0x12);
-
- priv->subdev.ctrl_handler = &priv->hdl;
- if (priv->hdl.error) {
- ret = priv->hdl.error;
- goto ectlhdlfree;
- }
-
- v4l2_ctrl_auto_cluster(2, &priv->autogain, 0, true);
- v4l2_ctrl_auto_cluster(3, &priv->autowb, 0, true);
- v4l2_ctrl_auto_cluster(2, &priv->autoexposure,
- V4L2_EXPOSURE_MANUAL, true);
-
- priv->rect.left = DEF_HSTRT << 1;
- priv->rect.top = DEF_VSTRT << 1;
- priv->rect.width = W_CIF;
- priv->rect.height = H_CIF;
-
- /* Hardware default frame interval */
- priv->tpf.numerator = GET_CLKRC_DIV(DEF_CLKRC);
- priv->tpf.denominator = FRAME_RATE_MAX;
-
- priv->subdev.internal_ops = &ov6650_internal_ops;
-
- ret = v4l2_async_register_subdev(&priv->subdev);
- if (!ret)
- return 0;
-ectlhdlfree:
- v4l2_ctrl_handler_free(&priv->hdl);
-
- return ret;
-}
-
-static void ov6650_remove(struct i2c_client *client)
-{
- struct ov6650 *priv = to_ov6650(client);
-
- v4l2_async_unregister_subdev(&priv->subdev);
- v4l2_ctrl_handler_free(&priv->hdl);
-}
-
-static const struct i2c_device_id ov6650_id[] = {
- { "ov6650" },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, ov6650_id);
-
-static struct i2c_driver ov6650_i2c_driver = {
- .driver = {
- .name = "ov6650",
- },
- .probe = ov6650_probe,
- .remove = ov6650_remove,
- .id_table = ov6650_id,
-};
-
-module_i2c_driver(ov6650_i2c_driver);
-
-MODULE_DESCRIPTION("V4L2 subdevice driver for OmniVision OV6650 camera sensor");
-MODULE_AUTHOR("Janusz Krzysztofik <jmkrzyszt@gmail.com");
-MODULE_LICENSE("GPL v2");
projects / thirdparty / kernel / stable.git / commitdiff
