To compile this driver as a module, choose M here: the
module will be called ov5647.
+config VIDEO_OV6650
+ tristate "OmniVision OV6650 sensor support"
+ depends on I2C && VIDEO_V4L2
+ depends on MEDIA_CAMERA_SUPPORT
+ ---help---
+ This is a Video4Linux2 sensor-level driver for the OmniVision
+ OV6650 camera.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ov6650.
+
config VIDEO_OV7640
tristate "OmniVision OV7640 sensor support"
depends on I2C && VIDEO_V4L2
obj-$(CONFIG_VIDEO_OV5640) += ov5640.o
obj-$(CONFIG_VIDEO_OV5645) += ov5645.o
obj-$(CONFIG_VIDEO_OV5647) += ov5647.o
+obj-$(CONFIG_VIDEO_OV6650) += ov6650.o
obj-$(CONFIG_VIDEO_OV7640) += ov7640.o
obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
obj-$(CONFIG_VIDEO_OV9650) += ov9650.o
--- /dev/null
+/*
+ * 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 initialy based on former work by Matt Callow
+ * drivers/media/video/omap/sensor_ov6650.c
+ * Copyright (C) 2006 Matt Callow
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/bitops.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-clk.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_6MHz 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 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 v4l2_clk *clk;
+ bool half_scale; /* scale down output by 2 */
+ struct v4l2_rect rect; /* sensor cropping window */
+ unsigned long pclk_limit; /* from host */
+ unsigned long pclk_max; /* from resolution and format */
+ struct v4l2_fract tpf; /* as requested with s_parm */
+ u32 code;
+ enum v4l2_colorspace colorspace;
+};
+
+
+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,
+};
+
+/* 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 = v4l2_clk_enable(priv->clk);
+ else
+ v4l2_clk_disable(priv->clk);
+
+ return ret;
+}
+
+static int ov6650_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_selection *sel)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov6650 *priv = to_ov6650(client);
+
+ if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ 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:
+ sel->r = priv->rect;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int ov6650_set_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_selection *sel)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov6650 *priv = to_ov6650(client);
+ struct v4l2_rect rect = sel->r;
+ int ret;
+
+ if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||
+ sel->target != V4L2_SEL_TGT_CROP)
+ return -EINVAL;
+
+ 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);
+
+ ret = ov6650_reg_write(client, REG_HSTRT, rect.left >> 1);
+ if (!ret) {
+ priv->rect.left = rect.left;
+ ret = ov6650_reg_write(client, REG_HSTOP,
+ (rect.left + rect.width) >> 1);
+ }
+ if (!ret) {
+ priv->rect.width = rect.width;
+ ret = ov6650_reg_write(client, REG_VSTRT, rect.top >> 1);
+ }
+ if (!ret) {
+ priv->rect.top = rect.top;
+ ret = ov6650_reg_write(client, REG_VSTOP,
+ (rect.top + rect.height) >> 1);
+ }
+ if (!ret)
+ priv->rect.height = rect.height;
+
+ return ret;
+}
+
+static int ov6650_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct v4l2_mbus_framefmt *mf = &format->format;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov6650 *priv = to_ov6650(client);
+
+ if (format->pad)
+ return -EINVAL;
+
+ mf->width = priv->rect.width >> priv->half_scale;
+ mf->height = priv->rect.height >> priv->half_scale;
+ mf->code = priv->code;
+ mf->colorspace = priv->colorspace;
+ mf->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+static bool is_unscaled_ok(int width, int height, struct v4l2_rect *rect)
+{
+ return width > rect->width >> 1 || height > rect->height >> 1;
+}
+
+static u8 to_clkrc(struct v4l2_fract *timeperframe,
+ unsigned long pclk_limit, unsigned long pclk_max)
+{
+ unsigned long pclk;
+
+ if (timeperframe->numerator && timeperframe->denominator)
+ pclk = pclk_max * timeperframe->denominator /
+ (FRAME_RATE_MAX * timeperframe->numerator);
+ else
+ pclk = pclk_max;
+
+ if (pclk_limit && pclk_limit < pclk)
+ pclk = pclk_limit;
+
+ return (pclk_max - 1) / pclk;
+}
+
+/* set the format we will capture in */
+static int ov6650_s_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov6650 *priv = to_ov6650(client);
+ bool half_scale = !is_unscaled_ok(mf->width, mf->height, &priv->rect);
+ struct v4l2_subdev_selection sel = {
+ .which = V4L2_SUBDEV_FORMAT_ACTIVE,
+ .target = V4L2_SEL_TGT_CROP,
+ .r.left = priv->rect.left + (priv->rect.width >> 1) -
+ (mf->width >> (1 - half_scale)),
+ .r.top = priv->rect.top + (priv->rect.height >> 1) -
+ (mf->height >> (1 - half_scale)),
+ .r.width = mf->width << half_scale,
+ .r.height = mf->height << half_scale,
+ };
+ u32 code = mf->code;
+ unsigned long mclk, pclk;
+ u8 coma_set = 0, coma_mask = 0, coml_set, coml_mask, clkrc;
+ 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;
+ }
+ priv->code = code;
+
+ if (code == MEDIA_BUS_FMT_Y8_1X8 ||
+ code == MEDIA_BUS_FMT_SBGGR8_1X8) {
+ coml_mask = COML_ONE_CHANNEL;
+ coml_set = 0;
+ priv->pclk_max = 4000000;
+ } else {
+ coml_mask = 0;
+ coml_set = COML_ONE_CHANNEL;
+ priv->pclk_max = 8000000;
+ }
+
+ if (code == MEDIA_BUS_FMT_SBGGR8_1X8)
+ priv->colorspace = V4L2_COLORSPACE_SRGB;
+ else if (code != 0)
+ priv->colorspace = V4L2_COLORSPACE_JPEG;
+
+ if (half_scale) {
+ dev_dbg(&client->dev, "max resolution: QCIF\n");
+ coma_set |= COMA_QCIF;
+ priv->pclk_max /= 2;
+ } else {
+ dev_dbg(&client->dev, "max resolution: CIF\n");
+ coma_mask |= COMA_QCIF;
+ }
+ priv->half_scale = half_scale;
+
+ clkrc = CLKRC_12MHz;
+ mclk = 12000000;
+ priv->pclk_limit = 1334000;
+ dev_dbg(&client->dev, "using 12MHz input clock\n");
+
+ clkrc |= to_clkrc(&priv->tpf, priv->pclk_limit, priv->pclk_max);
+
+ pclk = priv->pclk_max / GET_CLKRC_DIV(clkrc);
+ dev_dbg(&client->dev, "pixel clock divider: %ld.%ld\n",
+ mclk / pclk, 10 * mclk % pclk / pclk);
+
+ ret = ov6650_set_selection(sd, NULL, &sel);
+ if (!ret)
+ ret = ov6650_reg_rmw(client, REG_COMA, coma_set, coma_mask);
+ if (!ret)
+ ret = ov6650_reg_write(client, REG_CLKRC, clkrc);
+ if (!ret)
+ ret = ov6650_reg_rmw(client, REG_COML, coml_set, coml_mask);
+
+ if (!ret) {
+ mf->colorspace = priv->colorspace;
+ mf->width = priv->rect.width >> half_scale;
+ mf->height = priv->rect.height >> half_scale;
+ }
+ return ret;
+}
+
+static int ov6650_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct v4l2_mbus_framefmt *mf = &format->format;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov6650 *priv = to_ov6650(client);
+
+ if (format->pad)
+ return -EINVAL;
+
+ if (is_unscaled_ok(mf->width, mf->height, &priv->rect))
+ v4l_bound_align_image(&mf->width, 2, W_CIF, 1,
+ &mf->height, 2, H_CIF, 1, 0);
+
+ mf->field = V4L2_FIELD_NONE;
+
+ switch (mf->code) {
+ case MEDIA_BUS_FMT_Y10_1X10:
+ mf->code = MEDIA_BUS_FMT_Y8_1X8;
+ /* fall through */
+ 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:
+ mf->colorspace = V4L2_COLORSPACE_JPEG;
+ break;
+ default:
+ mf->code = MEDIA_BUS_FMT_SBGGR8_1X8;
+ /* fall through */
+ case MEDIA_BUS_FMT_SBGGR8_1X8:
+ mf->colorspace = V4L2_COLORSPACE_SRGB;
+ break;
+ }
+
+ if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
+ return ov6650_s_fmt(sd, mf);
+ cfg->try_fmt = *mf;
+
+ return 0;
+}
+
+static int ov6650_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ 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_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov6650 *priv = to_ov6650(client);
+ struct v4l2_captureparm *cp = &parms->parm.capture;
+
+ if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ memset(cp, 0, sizeof(*cp));
+ cp->capability = V4L2_CAP_TIMEPERFRAME;
+ cp->timeperframe.numerator = GET_CLKRC_DIV(to_clkrc(&priv->tpf,
+ priv->pclk_limit, priv->pclk_max));
+ cp->timeperframe.denominator = FRAME_RATE_MAX;
+
+ dev_dbg(&client->dev, "Frame interval: %u/%u s\n",
+ cp->timeperframe.numerator, cp->timeperframe.denominator);
+
+ return 0;
+}
+
+static int ov6650_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov6650 *priv = to_ov6650(client);
+ struct v4l2_captureparm *cp = &parms->parm.capture;
+ struct v4l2_fract *tpf = &cp->timeperframe;
+ int div, ret;
+ u8 clkrc;
+
+ if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ if (cp->extendedmode != 0)
+ 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);
+
+ /*
+ * Keep result to be used as tpf limit
+ * for subseqent clock divider calculations
+ */
+ priv->tpf.numerator = div;
+ priv->tpf.denominator = FRAME_RATE_MAX;
+
+ clkrc = to_clkrc(&priv->tpf, priv->pclk_limit, priv->pclk_max);
+
+ ret = ov6650_reg_rmw(client, REG_CLKRC, clkrc, CLKRC_DIV_MASK);
+ if (!ret) {
+ tpf->numerator = GET_CLKRC_DIV(clkrc);
+ tpf->denominator = FRAME_RATE_MAX;
+ }
+
+ 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)
+{
+ int ret;
+
+ dev_dbg(&client->dev, "initializing\n");
+
+ ret = ov6650_reg_write(client, REG_COMA, 0); /* ~COMA_RESET */
+ if (!ret)
+ ret = ov6650_reg_rmw(client, REG_COMB, 0, COMB_BAND_FILTER);
+
+ return ret;
+}
+
+static int ov6650_video_probe(struct i2c_client *client)
+{
+ struct ov6650 *priv = to_ov6650(client);
+ u8 pidh, pidl, midh, midl;
+ int ret;
+
+ ret = ov6650_s_power(&priv->subdev, 1);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * 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);
+ if (!ret)
+ ret = v4l2_ctrl_handler_setup(&priv->hdl);
+
+done:
+ ov6650_s_power(&priv->subdev, 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_g_mbus_config(struct v4l2_subdev *sd,
+ struct v4l2_mbus_config *cfg)
+{
+
+ cfg->flags = V4L2_MBUS_MASTER |
+ V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING |
+ V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW |
+ V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW |
+ V4L2_MBUS_DATA_ACTIVE_HIGH;
+ cfg->type = V4L2_MBUS_PARALLEL;
+
+ return 0;
+}
+
+/* Alter bus settings on camera side */
+static int ov6650_s_mbus_config(struct v4l2_subdev *sd,
+ const struct v4l2_mbus_config *cfg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+
+ if (cfg->flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
+ ret = ov6650_reg_rmw(client, REG_COMJ, COMJ_PCLK_RISING, 0);
+ else
+ ret = ov6650_reg_rmw(client, REG_COMJ, 0, COMJ_PCLK_RISING);
+ if (ret)
+ return ret;
+
+ if (cfg->flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
+ ret = ov6650_reg_rmw(client, REG_COMF, COMF_HREF_LOW, 0);
+ else
+ ret = ov6650_reg_rmw(client, REG_COMF, 0, COMF_HREF_LOW);
+ if (ret)
+ return ret;
+
+ if (cfg->flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
+ ret = ov6650_reg_rmw(client, REG_COMJ, COMJ_VSYNC_HIGH, 0);
+ else
+ ret = ov6650_reg_rmw(client, REG_COMJ, 0, COMJ_VSYNC_HIGH);
+
+ return ret;
+}
+
+static const struct v4l2_subdev_video_ops ov6650_video_ops = {
+ .s_stream = ov6650_s_stream,
+ .g_parm = ov6650_g_parm,
+ .s_parm = ov6650_s_parm,
+ .g_mbus_config = ov6650_g_mbus_config,
+ .s_mbus_config = ov6650_s_mbus_config,
+};
+
+static const struct v4l2_subdev_pad_ops ov6650_pad_ops = {
+ .enum_mbus_code = ov6650_enum_mbus_code,
+ .get_selection = ov6650_get_selection,
+ .set_selection = ov6650_set_selection,
+ .get_fmt = ov6650_get_fmt,
+ .set_fmt = ov6650_set_fmt,
+};
+
+static const struct v4l2_subdev_ops ov6650_subdev_ops = {
+ .core = &ov6650_core_ops,
+ .video = &ov6650_video_ops,
+ .pad = &ov6650_pad_ops,
+};
+
+/*
+ * i2c_driver function
+ */
+static int ov6650_probe(struct i2c_client *client,
+ const struct i2c_device_id *did)
+{
+ struct ov6650 *priv;
+ int ret;
+
+ priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ dev_err(&client->dev,
+ "Failed to allocate memory for private data!\n");
+ 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)
+ return priv->hdl.error;
+
+ 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;
+ priv->half_scale = false;
+ priv->code = MEDIA_BUS_FMT_YUYV8_2X8;
+ priv->colorspace = V4L2_COLORSPACE_JPEG;
+
+ priv->clk = v4l2_clk_get(&client->dev, NULL);
+ if (IS_ERR(priv->clk)) {
+ ret = PTR_ERR(priv->clk);
+ goto eclkget;
+ }
+
+ ret = ov6650_video_probe(client);
+ if (ret) {
+ v4l2_clk_put(priv->clk);
+eclkget:
+ v4l2_ctrl_handler_free(&priv->hdl);
+ }
+
+ return ret;
+}
+
+static int ov6650_remove(struct i2c_client *client)
+{
+ struct ov6650 *priv = to_ov6650(client);
+
+ v4l2_clk_put(priv->clk);
+ v4l2_device_unregister_subdev(&priv->subdev);
+ v4l2_ctrl_handler_free(&priv->hdl);
+ return 0;
+}
+
+static const struct i2c_device_id ov6650_id[] = {
+ { "ov6650", 0 },
+ { }
+};
+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("SoC Camera driver for OmniVision OV6650");
+MODULE_AUTHOR("Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>");
+MODULE_LICENSE("GPL v2");
help
This is a V4L2 camera driver for the OmniVision OV5642 sensor
-config SOC_CAMERA_OV6650
- tristate "ov6650 sensor support"
- depends on SOC_CAMERA && I2C
- ---help---
- This is a V4L2 SoC camera driver for the OmniVision OV6650 sensor
-
config SOC_CAMERA_OV772X
tristate "ov772x camera support"
depends on SOC_CAMERA && I2C
obj-$(CONFIG_SOC_CAMERA_MT9T112) += mt9t112.o
obj-$(CONFIG_SOC_CAMERA_MT9V022) += mt9v022.o
obj-$(CONFIG_SOC_CAMERA_OV5642) += ov5642.o
-obj-$(CONFIG_SOC_CAMERA_OV6650) += ov6650.o
obj-$(CONFIG_SOC_CAMERA_OV772X) += ov772x.o
obj-$(CONFIG_SOC_CAMERA_OV9640) += ov9640.o
obj-$(CONFIG_SOC_CAMERA_OV9740) += ov9740.o
+++ /dev/null
-/*
- * V4L2 SoC Camera 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 initialy based on former work by Matt Callow
- * drivers/media/video/omap/sensor_ov6650.c
- * Copyright (C) 2006 Matt Callow
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/bitops.h>
-#include <linux/delay.h>
-#include <linux/i2c.h>
-#include <linux/slab.h>
-#include <linux/v4l2-mediabus.h>
-#include <linux/module.h>
-
-#include <media/soc_camera.h>
-#include <media/v4l2-clk.h>
-#include <media/v4l2-ctrls.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_6MHz 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 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 v4l2_clk *clk;
- bool half_scale; /* scale down output by 2 */
- struct v4l2_rect rect; /* sensor cropping window */
- unsigned long pclk_limit; /* from host */
- unsigned long pclk_max; /* from resolution and format */
- struct v4l2_fract tpf; /* as requested with s_parm */
- u32 code;
- enum v4l2_colorspace colorspace;
-};
-
-
-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,
-};
-
-/* 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 soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
- struct ov6650 *priv = to_ov6650(client);
-
- return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
-}
-
-static int ov6650_get_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_selection *sel)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
-
- if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
- return -EINVAL;
-
- switch (sel->target) {
- case V4L2_SEL_TGT_CROP_BOUNDS:
- case V4L2_SEL_TGT_CROP_DEFAULT:
- 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:
- sel->r = priv->rect;
- return 0;
- default:
- return -EINVAL;
- }
-}
-
-static int ov6650_set_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_selection *sel)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
- struct v4l2_rect rect = sel->r;
- int ret;
-
- if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||
- sel->target != V4L2_SEL_TGT_CROP)
- return -EINVAL;
-
- rect.left = ALIGN(rect.left, 2);
- rect.width = ALIGN(rect.width, 2);
- rect.top = ALIGN(rect.top, 2);
- rect.height = ALIGN(rect.height, 2);
- soc_camera_limit_side(&rect.left, &rect.width,
- DEF_HSTRT << 1, 2, W_CIF);
- soc_camera_limit_side(&rect.top, &rect.height,
- DEF_VSTRT << 1, 2, H_CIF);
-
- ret = ov6650_reg_write(client, REG_HSTRT, rect.left >> 1);
- if (!ret) {
- priv->rect.left = rect.left;
- ret = ov6650_reg_write(client, REG_HSTOP,
- (rect.left + rect.width) >> 1);
- }
- if (!ret) {
- priv->rect.width = rect.width;
- ret = ov6650_reg_write(client, REG_VSTRT, rect.top >> 1);
- }
- if (!ret) {
- priv->rect.top = rect.top;
- ret = ov6650_reg_write(client, REG_VSTOP,
- (rect.top + rect.height) >> 1);
- }
- if (!ret)
- priv->rect.height = rect.height;
-
- return ret;
-}
-
-static int ov6650_get_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_format *format)
-{
- struct v4l2_mbus_framefmt *mf = &format->format;
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
-
- if (format->pad)
- return -EINVAL;
-
- mf->width = priv->rect.width >> priv->half_scale;
- mf->height = priv->rect.height >> priv->half_scale;
- mf->code = priv->code;
- mf->colorspace = priv->colorspace;
- mf->field = V4L2_FIELD_NONE;
-
- return 0;
-}
-
-static bool is_unscaled_ok(int width, int height, struct v4l2_rect *rect)
-{
- return width > rect->width >> 1 || height > rect->height >> 1;
-}
-
-static u8 to_clkrc(struct v4l2_fract *timeperframe,
- unsigned long pclk_limit, unsigned long pclk_max)
-{
- unsigned long pclk;
-
- if (timeperframe->numerator && timeperframe->denominator)
- pclk = pclk_max * timeperframe->denominator /
- (FRAME_RATE_MAX * timeperframe->numerator);
- else
- pclk = pclk_max;
-
- if (pclk_limit && pclk_limit < pclk)
- pclk = pclk_limit;
-
- return (pclk_max - 1) / pclk;
-}
-
-/* set the format we will capture in */
-static int ov6650_s_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct soc_camera_device *icd = v4l2_get_subdev_hostdata(sd);
- struct soc_camera_sense *sense = icd->sense;
- struct ov6650 *priv = to_ov6650(client);
- bool half_scale = !is_unscaled_ok(mf->width, mf->height, &priv->rect);
- struct v4l2_subdev_selection sel = {
- .which = V4L2_SUBDEV_FORMAT_ACTIVE,
- .target = V4L2_SEL_TGT_CROP,
- .r.left = priv->rect.left + (priv->rect.width >> 1) -
- (mf->width >> (1 - half_scale)),
- .r.top = priv->rect.top + (priv->rect.height >> 1) -
- (mf->height >> (1 - half_scale)),
- .r.width = mf->width << half_scale,
- .r.height = mf->height << half_scale,
- };
- u32 code = mf->code;
- unsigned long mclk, pclk;
- u8 coma_set = 0, coma_mask = 0, coml_set, coml_mask, clkrc;
- 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;
- }
- priv->code = code;
-
- if (code == MEDIA_BUS_FMT_Y8_1X8 ||
- code == MEDIA_BUS_FMT_SBGGR8_1X8) {
- coml_mask = COML_ONE_CHANNEL;
- coml_set = 0;
- priv->pclk_max = 4000000;
- } else {
- coml_mask = 0;
- coml_set = COML_ONE_CHANNEL;
- priv->pclk_max = 8000000;
- }
-
- if (code == MEDIA_BUS_FMT_SBGGR8_1X8)
- priv->colorspace = V4L2_COLORSPACE_SRGB;
- else if (code != 0)
- priv->colorspace = V4L2_COLORSPACE_JPEG;
-
- if (half_scale) {
- dev_dbg(&client->dev, "max resolution: QCIF\n");
- coma_set |= COMA_QCIF;
- priv->pclk_max /= 2;
- } else {
- dev_dbg(&client->dev, "max resolution: CIF\n");
- coma_mask |= COMA_QCIF;
- }
- priv->half_scale = half_scale;
-
- if (sense) {
- if (sense->master_clock == 8000000) {
- dev_dbg(&client->dev, "8MHz input clock\n");
- clkrc = CLKRC_6MHz;
- } else if (sense->master_clock == 12000000) {
- dev_dbg(&client->dev, "12MHz input clock\n");
- clkrc = CLKRC_12MHz;
- } else if (sense->master_clock == 16000000) {
- dev_dbg(&client->dev, "16MHz input clock\n");
- clkrc = CLKRC_16MHz;
- } else if (sense->master_clock == 24000000) {
- dev_dbg(&client->dev, "24MHz input clock\n");
- clkrc = CLKRC_24MHz;
- } else {
- dev_err(&client->dev,
- "unsupported input clock, check platform data\n");
- return -EINVAL;
- }
- mclk = sense->master_clock;
- priv->pclk_limit = sense->pixel_clock_max;
- } else {
- clkrc = CLKRC_24MHz;
- mclk = 24000000;
- priv->pclk_limit = 0;
- dev_dbg(&client->dev, "using default 24MHz input clock\n");
- }
-
- clkrc |= to_clkrc(&priv->tpf, priv->pclk_limit, priv->pclk_max);
-
- pclk = priv->pclk_max / GET_CLKRC_DIV(clkrc);
- dev_dbg(&client->dev, "pixel clock divider: %ld.%ld\n",
- mclk / pclk, 10 * mclk % pclk / pclk);
-
- ret = ov6650_set_selection(sd, NULL, &sel);
- if (!ret)
- ret = ov6650_reg_rmw(client, REG_COMA, coma_set, coma_mask);
- if (!ret)
- ret = ov6650_reg_write(client, REG_CLKRC, clkrc);
- if (!ret)
- ret = ov6650_reg_rmw(client, REG_COML, coml_set, coml_mask);
-
- if (!ret) {
- mf->colorspace = priv->colorspace;
- mf->width = priv->rect.width >> half_scale;
- mf->height = priv->rect.height >> half_scale;
- }
- return ret;
-}
-
-static int ov6650_set_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_format *format)
-{
- struct v4l2_mbus_framefmt *mf = &format->format;
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
-
- if (format->pad)
- return -EINVAL;
-
- if (is_unscaled_ok(mf->width, mf->height, &priv->rect))
- v4l_bound_align_image(&mf->width, 2, W_CIF, 1,
- &mf->height, 2, H_CIF, 1, 0);
-
- mf->field = V4L2_FIELD_NONE;
-
- switch (mf->code) {
- case MEDIA_BUS_FMT_Y10_1X10:
- mf->code = MEDIA_BUS_FMT_Y8_1X8;
- /* fall through */
- 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:
- mf->colorspace = V4L2_COLORSPACE_JPEG;
- break;
- default:
- mf->code = MEDIA_BUS_FMT_SBGGR8_1X8;
- /* fall through */
- case MEDIA_BUS_FMT_SBGGR8_1X8:
- mf->colorspace = V4L2_COLORSPACE_SRGB;
- break;
- }
-
- if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
- return ov6650_s_fmt(sd, mf);
- cfg->try_fmt = *mf;
-
- return 0;
-}
-
-static int ov6650_enum_mbus_code(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- 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_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
- struct v4l2_captureparm *cp = &parms->parm.capture;
-
- if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
-
- memset(cp, 0, sizeof(*cp));
- cp->capability = V4L2_CAP_TIMEPERFRAME;
- cp->timeperframe.numerator = GET_CLKRC_DIV(to_clkrc(&priv->tpf,
- priv->pclk_limit, priv->pclk_max));
- cp->timeperframe.denominator = FRAME_RATE_MAX;
-
- dev_dbg(&client->dev, "Frame interval: %u/%u s\n",
- cp->timeperframe.numerator, cp->timeperframe.denominator);
-
- return 0;
-}
-
-static int ov6650_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct ov6650 *priv = to_ov6650(client);
- struct v4l2_captureparm *cp = &parms->parm.capture;
- struct v4l2_fract *tpf = &cp->timeperframe;
- int div, ret;
- u8 clkrc;
-
- if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
-
- if (cp->extendedmode != 0)
- 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);
-
- /*
- * Keep result to be used as tpf limit
- * for subseqent clock divider calculations
- */
- priv->tpf.numerator = div;
- priv->tpf.denominator = FRAME_RATE_MAX;
-
- clkrc = to_clkrc(&priv->tpf, priv->pclk_limit, priv->pclk_max);
-
- ret = ov6650_reg_rmw(client, REG_CLKRC, clkrc, CLKRC_DIV_MASK);
- if (!ret) {
- tpf->numerator = GET_CLKRC_DIV(clkrc);
- tpf->denominator = FRAME_RATE_MAX;
- }
-
- 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)
-{
- int ret;
-
- dev_dbg(&client->dev, "initializing\n");
-
- ret = ov6650_reg_write(client, REG_COMA, 0); /* ~COMA_RESET */
- if (!ret)
- ret = ov6650_reg_rmw(client, REG_COMB, 0, COMB_BAND_FILTER);
-
- return ret;
-}
-
-static int ov6650_video_probe(struct i2c_client *client)
-{
- struct ov6650 *priv = to_ov6650(client);
- u8 pidh, pidl, midh, midl;
- int ret;
-
- ret = ov6650_s_power(&priv->subdev, 1);
- if (ret < 0)
- return ret;
-
- /*
- * 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);
- if (!ret)
- ret = v4l2_ctrl_handler_setup(&priv->hdl);
-
-done:
- ov6650_s_power(&priv->subdev, 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_g_mbus_config(struct v4l2_subdev *sd,
- struct v4l2_mbus_config *cfg)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
-
- cfg->flags = V4L2_MBUS_MASTER |
- V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING |
- V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW |
- V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW |
- V4L2_MBUS_DATA_ACTIVE_HIGH;
- cfg->type = V4L2_MBUS_PARALLEL;
- cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
-
- return 0;
-}
-
-/* Alter bus settings on camera side */
-static int ov6650_s_mbus_config(struct v4l2_subdev *sd,
- const struct v4l2_mbus_config *cfg)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
- unsigned long flags = soc_camera_apply_board_flags(ssdd, cfg);
- int ret;
-
- if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
- ret = ov6650_reg_rmw(client, REG_COMJ, COMJ_PCLK_RISING, 0);
- else
- ret = ov6650_reg_rmw(client, REG_COMJ, 0, COMJ_PCLK_RISING);
- if (ret)
- return ret;
-
- if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
- ret = ov6650_reg_rmw(client, REG_COMF, COMF_HREF_LOW, 0);
- else
- ret = ov6650_reg_rmw(client, REG_COMF, 0, COMF_HREF_LOW);
- if (ret)
- return ret;
-
- if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
- ret = ov6650_reg_rmw(client, REG_COMJ, COMJ_VSYNC_HIGH, 0);
- else
- ret = ov6650_reg_rmw(client, REG_COMJ, 0, COMJ_VSYNC_HIGH);
-
- return ret;
-}
-
-static const struct v4l2_subdev_video_ops ov6650_video_ops = {
- .s_stream = ov6650_s_stream,
- .g_parm = ov6650_g_parm,
- .s_parm = ov6650_s_parm,
- .g_mbus_config = ov6650_g_mbus_config,
- .s_mbus_config = ov6650_s_mbus_config,
-};
-
-static const struct v4l2_subdev_pad_ops ov6650_pad_ops = {
- .enum_mbus_code = ov6650_enum_mbus_code,
- .get_selection = ov6650_get_selection,
- .set_selection = ov6650_set_selection,
- .get_fmt = ov6650_get_fmt,
- .set_fmt = ov6650_set_fmt,
-};
-
-static const struct v4l2_subdev_ops ov6650_subdev_ops = {
- .core = &ov6650_core_ops,
- .video = &ov6650_video_ops,
- .pad = &ov6650_pad_ops,
-};
-
-/*
- * i2c_driver function
- */
-static int ov6650_probe(struct i2c_client *client,
- const struct i2c_device_id *did)
-{
- struct ov6650 *priv;
- struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
- int ret;
-
- if (!ssdd) {
- dev_err(&client->dev, "Missing platform_data for driver\n");
- return -EINVAL;
- }
-
- priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
- if (!priv) {
- dev_err(&client->dev,
- "Failed to allocate memory for private data!\n");
- 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)
- return priv->hdl.error;
-
- 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;
- priv->half_scale = false;
- priv->code = MEDIA_BUS_FMT_YUYV8_2X8;
- priv->colorspace = V4L2_COLORSPACE_JPEG;
-
- priv->clk = v4l2_clk_get(&client->dev, NULL);
- if (IS_ERR(priv->clk)) {
- ret = PTR_ERR(priv->clk);
- goto eclkget;
- }
-
- ret = ov6650_video_probe(client);
- if (ret) {
- v4l2_clk_put(priv->clk);
-eclkget:
- v4l2_ctrl_handler_free(&priv->hdl);
- }
-
- return ret;
-}
-
-static int ov6650_remove(struct i2c_client *client)
-{
- struct ov6650 *priv = to_ov6650(client);
-
- v4l2_clk_put(priv->clk);
- v4l2_device_unregister_subdev(&priv->subdev);
- v4l2_ctrl_handler_free(&priv->hdl);
- return 0;
-}
-
-static const struct i2c_device_id ov6650_id[] = {
- { "ov6650", 0 },
- { }
-};
-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("SoC Camera driver for OmniVision OV6650");
-MODULE_AUTHOR("Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>");
-MODULE_LICENSE("GPL v2");
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff