diff options
Diffstat (limited to 'drivers/media/i2c/ov6650.c')
| -rw-r--r-- | drivers/media/i2c/ov6650.c | 1149 |
1 files changed, 0 insertions, 1149 deletions
diff --git a/drivers/media/i2c/ov6650.c b/drivers/media/i2c/ov6650.c deleted file mode 100644 index 9c7627161142..000000000000 --- a/drivers/media/i2c/ov6650.c +++ /dev/null @@ -1,1149 +0,0 @@ -// 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_clk_get(&client->dev, NULL); - if (IS_ERR(priv->clk)) { - ret = PTR_ERR(priv->clk); - dev_err(&client->dev, "clk request err: %d\n", ret); - return ret; - } - - 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"); |