mirror of https://gitee.com/openkylin/linux.git
506 lines
12 KiB
C
506 lines
12 KiB
C
/*
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* Driver for IMX074 CMOS Image Sensor from Sony
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*
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* Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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*
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* Partially inspired by the IMX074 driver from the Android / MSM tree
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/delay.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/videodev2.h>
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#include <media/soc_camera.h>
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#include <media/soc_mediabus.h>
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#include <media/v4l2-subdev.h>
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#include <media/v4l2-chip-ident.h>
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/* IMX074 registers */
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#define MODE_SELECT 0x0100
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#define IMAGE_ORIENTATION 0x0101
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#define GROUPED_PARAMETER_HOLD 0x0104
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/* Integration Time */
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#define COARSE_INTEGRATION_TIME_HI 0x0202
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#define COARSE_INTEGRATION_TIME_LO 0x0203
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/* Gain */
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#define ANALOGUE_GAIN_CODE_GLOBAL_HI 0x0204
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#define ANALOGUE_GAIN_CODE_GLOBAL_LO 0x0205
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/* PLL registers */
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#define PRE_PLL_CLK_DIV 0x0305
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#define PLL_MULTIPLIER 0x0307
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#define PLSTATIM 0x302b
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#define VNDMY_ABLMGSHLMT 0x300a
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#define Y_OPBADDR_START_DI 0x3014
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/* mode setting */
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#define FRAME_LENGTH_LINES_HI 0x0340
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#define FRAME_LENGTH_LINES_LO 0x0341
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#define LINE_LENGTH_PCK_HI 0x0342
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#define LINE_LENGTH_PCK_LO 0x0343
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#define YADDR_START 0x0347
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#define YADDR_END 0x034b
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#define X_OUTPUT_SIZE_MSB 0x034c
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#define X_OUTPUT_SIZE_LSB 0x034d
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#define Y_OUTPUT_SIZE_MSB 0x034e
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#define Y_OUTPUT_SIZE_LSB 0x034f
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#define X_EVEN_INC 0x0381
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#define X_ODD_INC 0x0383
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#define Y_EVEN_INC 0x0385
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#define Y_ODD_INC 0x0387
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#define HMODEADD 0x3001
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#define VMODEADD 0x3016
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#define VAPPLINE_START 0x3069
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#define VAPPLINE_END 0x306b
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#define SHUTTER 0x3086
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#define HADDAVE 0x30e8
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#define LANESEL 0x3301
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/* IMX074 supported geometry */
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#define IMX074_WIDTH 1052
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#define IMX074_HEIGHT 780
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/* IMX074 has only one fixed colorspace per pixelcode */
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struct imx074_datafmt {
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enum v4l2_mbus_pixelcode code;
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enum v4l2_colorspace colorspace;
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};
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struct imx074 {
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struct v4l2_subdev subdev;
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const struct imx074_datafmt *fmt;
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};
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static const struct imx074_datafmt imx074_colour_fmts[] = {
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{V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
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};
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static struct imx074 *to_imx074(const struct i2c_client *client)
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{
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return container_of(i2c_get_clientdata(client), struct imx074, subdev);
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}
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/* Find a data format by a pixel code in an array */
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static const struct imx074_datafmt *imx074_find_datafmt(enum v4l2_mbus_pixelcode code)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(imx074_colour_fmts); i++)
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if (imx074_colour_fmts[i].code == code)
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return imx074_colour_fmts + i;
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return NULL;
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}
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static int reg_write(struct i2c_client *client, const u16 addr, const u8 data)
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{
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struct i2c_adapter *adap = client->adapter;
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struct i2c_msg msg;
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unsigned char tx[3];
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int ret;
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msg.addr = client->addr;
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msg.buf = tx;
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msg.len = 3;
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msg.flags = 0;
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tx[0] = addr >> 8;
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tx[1] = addr & 0xff;
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tx[2] = data;
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ret = i2c_transfer(adap, &msg, 1);
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mdelay(2);
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return ret == 1 ? 0 : -EIO;
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}
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static int reg_read(struct i2c_client *client, const u16 addr)
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{
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u8 buf[2] = {addr >> 8, addr & 0xff};
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int ret;
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struct i2c_msg msgs[] = {
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{
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.addr = client->addr,
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.flags = 0,
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.len = 2,
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.buf = buf,
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}, {
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.addr = client->addr,
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.flags = I2C_M_RD,
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.len = 2,
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.buf = buf,
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},
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};
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ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
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if (ret < 0) {
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dev_warn(&client->dev, "Reading register %x from %x failed\n",
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addr, client->addr);
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return ret;
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}
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return buf[0] & 0xff; /* no sign-extension */
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}
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static int imx074_try_fmt(struct v4l2_subdev *sd,
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struct v4l2_mbus_framefmt *mf)
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{
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const struct imx074_datafmt *fmt = imx074_find_datafmt(mf->code);
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dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
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if (!fmt) {
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mf->code = imx074_colour_fmts[0].code;
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mf->colorspace = imx074_colour_fmts[0].colorspace;
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}
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mf->width = IMX074_WIDTH;
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mf->height = IMX074_HEIGHT;
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mf->field = V4L2_FIELD_NONE;
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return 0;
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}
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static int imx074_s_fmt(struct v4l2_subdev *sd,
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struct v4l2_mbus_framefmt *mf)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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struct imx074 *priv = to_imx074(client);
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dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
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/* MIPI CSI could have changed the format, double-check */
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if (!imx074_find_datafmt(mf->code))
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return -EINVAL;
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imx074_try_fmt(sd, mf);
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priv->fmt = imx074_find_datafmt(mf->code);
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return 0;
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}
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static int imx074_g_fmt(struct v4l2_subdev *sd,
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struct v4l2_mbus_framefmt *mf)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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struct imx074 *priv = to_imx074(client);
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const struct imx074_datafmt *fmt = priv->fmt;
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mf->code = fmt->code;
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mf->colorspace = fmt->colorspace;
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mf->width = IMX074_WIDTH;
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mf->height = IMX074_HEIGHT;
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mf->field = V4L2_FIELD_NONE;
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return 0;
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}
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static int imx074_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
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{
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struct v4l2_rect *rect = &a->c;
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a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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rect->top = 0;
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rect->left = 0;
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rect->width = IMX074_WIDTH;
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rect->height = IMX074_HEIGHT;
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return 0;
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}
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static int imx074_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
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{
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a->bounds.left = 0;
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a->bounds.top = 0;
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a->bounds.width = IMX074_WIDTH;
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a->bounds.height = IMX074_HEIGHT;
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a->defrect = a->bounds;
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a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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a->pixelaspect.numerator = 1;
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a->pixelaspect.denominator = 1;
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return 0;
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}
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static int imx074_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
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enum v4l2_mbus_pixelcode *code)
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{
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if ((unsigned int)index >= ARRAY_SIZE(imx074_colour_fmts))
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return -EINVAL;
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*code = imx074_colour_fmts[index].code;
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return 0;
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}
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static int imx074_s_stream(struct v4l2_subdev *sd, int enable)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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/* MODE_SELECT: stream or standby */
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return reg_write(client, MODE_SELECT, !!enable);
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}
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static int imx074_g_chip_ident(struct v4l2_subdev *sd,
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struct v4l2_dbg_chip_ident *id)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
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return -EINVAL;
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if (id->match.addr != client->addr)
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return -ENODEV;
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id->ident = V4L2_IDENT_IMX074;
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id->revision = 0;
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return 0;
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}
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static struct v4l2_subdev_video_ops imx074_subdev_video_ops = {
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.s_stream = imx074_s_stream,
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.s_mbus_fmt = imx074_s_fmt,
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.g_mbus_fmt = imx074_g_fmt,
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.try_mbus_fmt = imx074_try_fmt,
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.enum_mbus_fmt = imx074_enum_fmt,
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.g_crop = imx074_g_crop,
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.cropcap = imx074_cropcap,
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};
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static struct v4l2_subdev_core_ops imx074_subdev_core_ops = {
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.g_chip_ident = imx074_g_chip_ident,
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};
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static struct v4l2_subdev_ops imx074_subdev_ops = {
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.core = &imx074_subdev_core_ops,
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.video = &imx074_subdev_video_ops,
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};
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/*
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* We have to provide soc-camera operations, but we don't have anything to say
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* there. The MIPI CSI2 driver will provide .query_bus_param and .set_bus_param
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*/
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static unsigned long imx074_query_bus_param(struct soc_camera_device *icd)
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{
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return 0;
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}
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static int imx074_set_bus_param(struct soc_camera_device *icd,
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unsigned long flags)
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{
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return -EINVAL;
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}
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static struct soc_camera_ops imx074_ops = {
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.query_bus_param = imx074_query_bus_param,
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.set_bus_param = imx074_set_bus_param,
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};
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static int imx074_video_probe(struct soc_camera_device *icd,
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struct i2c_client *client)
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{
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int ret;
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u16 id;
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/* Read sensor Model ID */
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ret = reg_read(client, 0);
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if (ret < 0)
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return ret;
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id = ret << 8;
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ret = reg_read(client, 1);
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if (ret < 0)
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return ret;
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id |= ret;
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dev_info(&client->dev, "Chip ID 0x%04x detected\n", id);
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if (id != 0x74)
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return -ENODEV;
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/* PLL Setting EXTCLK=24MHz, 22.5times */
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reg_write(client, PLL_MULTIPLIER, 0x2D);
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reg_write(client, PRE_PLL_CLK_DIV, 0x02);
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reg_write(client, PLSTATIM, 0x4B);
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/* 2-lane mode */
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reg_write(client, 0x3024, 0x00);
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reg_write(client, IMAGE_ORIENTATION, 0x00);
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/* select RAW mode:
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* 0x08+0x08 = top 8 bits
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* 0x0a+0x08 = compressed 8-bits
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* 0x0a+0x0a = 10 bits
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*/
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reg_write(client, 0x0112, 0x08);
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reg_write(client, 0x0113, 0x08);
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/* Base setting for High frame mode */
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reg_write(client, VNDMY_ABLMGSHLMT, 0x80);
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reg_write(client, Y_OPBADDR_START_DI, 0x08);
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reg_write(client, 0x3015, 0x37);
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reg_write(client, 0x301C, 0x01);
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reg_write(client, 0x302C, 0x05);
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reg_write(client, 0x3031, 0x26);
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reg_write(client, 0x3041, 0x60);
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reg_write(client, 0x3051, 0x24);
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reg_write(client, 0x3053, 0x34);
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reg_write(client, 0x3057, 0xC0);
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reg_write(client, 0x305C, 0x09);
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reg_write(client, 0x305D, 0x07);
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reg_write(client, 0x3060, 0x30);
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reg_write(client, 0x3065, 0x00);
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reg_write(client, 0x30AA, 0x08);
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reg_write(client, 0x30AB, 0x1C);
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reg_write(client, 0x30B0, 0x32);
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reg_write(client, 0x30B2, 0x83);
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reg_write(client, 0x30D3, 0x04);
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reg_write(client, 0x3106, 0x78);
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reg_write(client, 0x310C, 0x82);
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reg_write(client, 0x3304, 0x05);
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reg_write(client, 0x3305, 0x04);
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reg_write(client, 0x3306, 0x11);
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reg_write(client, 0x3307, 0x02);
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reg_write(client, 0x3308, 0x0C);
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reg_write(client, 0x3309, 0x06);
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reg_write(client, 0x330A, 0x08);
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reg_write(client, 0x330B, 0x04);
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reg_write(client, 0x330C, 0x08);
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reg_write(client, 0x330D, 0x06);
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reg_write(client, 0x330E, 0x01);
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reg_write(client, 0x3381, 0x00);
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/* V : 1/2V-addition (1,3), H : 1/2H-averaging (1,3) -> Full HD */
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/* 1608 = 1560 + 48 (black lines) */
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reg_write(client, FRAME_LENGTH_LINES_HI, 0x06);
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reg_write(client, FRAME_LENGTH_LINES_LO, 0x48);
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reg_write(client, YADDR_START, 0x00);
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reg_write(client, YADDR_END, 0x2F);
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/* 0x838 == 2104 */
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reg_write(client, X_OUTPUT_SIZE_MSB, 0x08);
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reg_write(client, X_OUTPUT_SIZE_LSB, 0x38);
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/* 0x618 == 1560 */
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reg_write(client, Y_OUTPUT_SIZE_MSB, 0x06);
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reg_write(client, Y_OUTPUT_SIZE_LSB, 0x18);
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reg_write(client, X_EVEN_INC, 0x01);
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reg_write(client, X_ODD_INC, 0x03);
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reg_write(client, Y_EVEN_INC, 0x01);
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reg_write(client, Y_ODD_INC, 0x03);
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reg_write(client, HMODEADD, 0x00);
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reg_write(client, VMODEADD, 0x16);
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reg_write(client, VAPPLINE_START, 0x24);
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reg_write(client, VAPPLINE_END, 0x53);
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reg_write(client, SHUTTER, 0x00);
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reg_write(client, HADDAVE, 0x80);
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reg_write(client, LANESEL, 0x00);
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reg_write(client, GROUPED_PARAMETER_HOLD, 0x00); /* off */
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return 0;
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}
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static int imx074_probe(struct i2c_client *client,
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const struct i2c_device_id *did)
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{
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struct imx074 *priv;
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struct soc_camera_device *icd = client->dev.platform_data;
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struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
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struct soc_camera_link *icl;
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int ret;
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if (!icd) {
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dev_err(&client->dev, "IMX074: missing soc-camera data!\n");
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return -EINVAL;
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}
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icl = to_soc_camera_link(icd);
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if (!icl) {
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dev_err(&client->dev, "IMX074: missing platform data!\n");
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return -EINVAL;
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}
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if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
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dev_warn(&adapter->dev,
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"I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
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return -EIO;
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}
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priv = kzalloc(sizeof(struct imx074), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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v4l2_i2c_subdev_init(&priv->subdev, client, &imx074_subdev_ops);
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icd->ops = &imx074_ops;
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priv->fmt = &imx074_colour_fmts[0];
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ret = imx074_video_probe(icd, client);
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if (ret < 0) {
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icd->ops = NULL;
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kfree(priv);
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return ret;
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}
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return ret;
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}
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static int imx074_remove(struct i2c_client *client)
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{
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struct imx074 *priv = to_imx074(client);
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struct soc_camera_device *icd = client->dev.platform_data;
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struct soc_camera_link *icl = to_soc_camera_link(icd);
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icd->ops = NULL;
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if (icl->free_bus)
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icl->free_bus(icl);
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kfree(priv);
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return 0;
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}
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static const struct i2c_device_id imx074_id[] = {
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{ "imx074", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, imx074_id);
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static struct i2c_driver imx074_i2c_driver = {
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.driver = {
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.name = "imx074",
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},
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.probe = imx074_probe,
|
|
.remove = imx074_remove,
|
|
.id_table = imx074_id,
|
|
};
|
|
|
|
static int __init imx074_mod_init(void)
|
|
{
|
|
return i2c_add_driver(&imx074_i2c_driver);
|
|
}
|
|
|
|
static void __exit imx074_mod_exit(void)
|
|
{
|
|
i2c_del_driver(&imx074_i2c_driver);
|
|
}
|
|
|
|
module_init(imx074_mod_init);
|
|
module_exit(imx074_mod_exit);
|
|
|
|
MODULE_DESCRIPTION("Sony IMX074 Camera driver");
|
|
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
|
|
MODULE_LICENSE("GPL v2");
|