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    Subject[PATCH v7 08/11] media: i2c: Copy tw9910 soc_camera sensor driver
    Date
    Copy the soc_camera based driver in v4l2 sensor driver directory.
    This commit just copies the original file without modifying it.
    No modification to KConfig and Makefile as soc_camera framework
    dependencies need to be removed first in next commit.

    Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
    Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
    Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
    ---
    drivers/media/i2c/tw9910.c | 999 +++++++++++++++++++++++++++++++++++++++++++++
    1 file changed, 999 insertions(+)
    create mode 100644 drivers/media/i2c/tw9910.c

    diff --git a/drivers/media/i2c/tw9910.c b/drivers/media/i2c/tw9910.c
    new file mode 100644
    index 0000000..bdb5e0a
    --- /dev/null
    +++ b/drivers/media/i2c/tw9910.c
    @@ -0,0 +1,999 @@
    +/*
    + * tw9910 Video Driver
    + *
    + * Copyright (C) 2008 Renesas Solutions Corp.
    + * Kuninori Morimoto <morimoto.kuninori@renesas.com>
    + *
    + * Based on ov772x driver,
    + *
    + * Copyright (C) 2008 Kuninori Morimoto <morimoto.kuninori@renesas.com>
    + * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
    + * Copyright (C) 2008 Magnus Damm
    + * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
    + *
    + * 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/init.h>
    +#include <linux/module.h>
    +#include <linux/i2c.h>
    +#include <linux/slab.h>
    +#include <linux/kernel.h>
    +#include <linux/delay.h>
    +#include <linux/v4l2-mediabus.h>
    +#include <linux/videodev2.h>
    +
    +#include <media/soc_camera.h>
    +#include <media/i2c/tw9910.h>
    +#include <media/v4l2-clk.h>
    +#include <media/v4l2-subdev.h>
    +
    +#define GET_ID(val) ((val & 0xF8) >> 3)
    +#define GET_REV(val) (val & 0x07)
    +
    +/*
    + * register offset
    + */
    +#define ID 0x00 /* Product ID Code Register */
    +#define STATUS1 0x01 /* Chip Status Register I */
    +#define INFORM 0x02 /* Input Format */
    +#define OPFORM 0x03 /* Output Format Control Register */
    +#define DLYCTR 0x04 /* Hysteresis and HSYNC Delay Control */
    +#define OUTCTR1 0x05 /* Output Control I */
    +#define ACNTL1 0x06 /* Analog Control Register 1 */
    +#define CROP_HI 0x07 /* Cropping Register, High */
    +#define VDELAY_LO 0x08 /* Vertical Delay Register, Low */
    +#define VACTIVE_LO 0x09 /* Vertical Active Register, Low */
    +#define HDELAY_LO 0x0A /* Horizontal Delay Register, Low */
    +#define HACTIVE_LO 0x0B /* Horizontal Active Register, Low */
    +#define CNTRL1 0x0C /* Control Register I */
    +#define VSCALE_LO 0x0D /* Vertical Scaling Register, Low */
    +#define SCALE_HI 0x0E /* Scaling Register, High */
    +#define HSCALE_LO 0x0F /* Horizontal Scaling Register, Low */
    +#define BRIGHT 0x10 /* BRIGHTNESS Control Register */
    +#define CONTRAST 0x11 /* CONTRAST Control Register */
    +#define SHARPNESS 0x12 /* SHARPNESS Control Register I */
    +#define SAT_U 0x13 /* Chroma (U) Gain Register */
    +#define SAT_V 0x14 /* Chroma (V) Gain Register */
    +#define HUE 0x15 /* Hue Control Register */
    +#define CORING1 0x17
    +#define CORING2 0x18 /* Coring and IF compensation */
    +#define VBICNTL 0x19 /* VBI Control Register */
    +#define ACNTL2 0x1A /* Analog Control 2 */
    +#define OUTCTR2 0x1B /* Output Control 2 */
    +#define SDT 0x1C /* Standard Selection */
    +#define SDTR 0x1D /* Standard Recognition */
    +#define TEST 0x1F /* Test Control Register */
    +#define CLMPG 0x20 /* Clamping Gain */
    +#define IAGC 0x21 /* Individual AGC Gain */
    +#define AGCGAIN 0x22 /* AGC Gain */
    +#define PEAKWT 0x23 /* White Peak Threshold */
    +#define CLMPL 0x24 /* Clamp level */
    +#define SYNCT 0x25 /* Sync Amplitude */
    +#define MISSCNT 0x26 /* Sync Miss Count Register */
    +#define PCLAMP 0x27 /* Clamp Position Register */
    +#define VCNTL1 0x28 /* Vertical Control I */
    +#define VCNTL2 0x29 /* Vertical Control II */
    +#define CKILL 0x2A /* Color Killer Level Control */
    +#define COMB 0x2B /* Comb Filter Control */
    +#define LDLY 0x2C /* Luma Delay and H Filter Control */
    +#define MISC1 0x2D /* Miscellaneous Control I */
    +#define LOOP 0x2E /* LOOP Control Register */
    +#define MISC2 0x2F /* Miscellaneous Control II */
    +#define MVSN 0x30 /* Macrovision Detection */
    +#define STATUS2 0x31 /* Chip STATUS II */
    +#define HFREF 0x32 /* H monitor */
    +#define CLMD 0x33 /* CLAMP MODE */
    +#define IDCNTL 0x34 /* ID Detection Control */
    +#define CLCNTL1 0x35 /* Clamp Control I */
    +#define ANAPLLCTL 0x4C
    +#define VBIMIN 0x4D
    +#define HSLOWCTL 0x4E
    +#define WSS3 0x4F
    +#define FILLDATA 0x50
    +#define SDID 0x51
    +#define DID 0x52
    +#define WSS1 0x53
    +#define WSS2 0x54
    +#define VVBI 0x55
    +#define LCTL6 0x56
    +#define LCTL7 0x57
    +#define LCTL8 0x58
    +#define LCTL9 0x59
    +#define LCTL10 0x5A
    +#define LCTL11 0x5B
    +#define LCTL12 0x5C
    +#define LCTL13 0x5D
    +#define LCTL14 0x5E
    +#define LCTL15 0x5F
    +#define LCTL16 0x60
    +#define LCTL17 0x61
    +#define LCTL18 0x62
    +#define LCTL19 0x63
    +#define LCTL20 0x64
    +#define LCTL21 0x65
    +#define LCTL22 0x66
    +#define LCTL23 0x67
    +#define LCTL24 0x68
    +#define LCTL25 0x69
    +#define LCTL26 0x6A
    +#define HSBEGIN 0x6B
    +#define HSEND 0x6C
    +#define OVSDLY 0x6D
    +#define OVSEND 0x6E
    +#define VBIDELAY 0x6F
    +
    +/*
    + * register detail
    + */
    +
    +/* INFORM */
    +#define FC27_ON 0x40 /* 1 : Input crystal clock frequency is 27MHz */
    +#define FC27_FF 0x00 /* 0 : Square pixel mode. */
    + /* Must use 24.54MHz for 60Hz field rate */
    + /* source or 29.5MHz for 50Hz field rate */
    +#define IFSEL_S 0x10 /* 01 : S-video decoding */
    +#define IFSEL_C 0x00 /* 00 : Composite video decoding */
    + /* Y input video selection */
    +#define YSEL_M0 0x00 /* 00 : Mux0 selected */
    +#define YSEL_M1 0x04 /* 01 : Mux1 selected */
    +#define YSEL_M2 0x08 /* 10 : Mux2 selected */
    +#define YSEL_M3 0x10 /* 11 : Mux3 selected */
    +
    +/* OPFORM */
    +#define MODE 0x80 /* 0 : CCIR601 compatible YCrCb 4:2:2 format */
    + /* 1 : ITU-R-656 compatible data sequence format */
    +#define LEN 0x40 /* 0 : 8-bit YCrCb 4:2:2 output format */
    + /* 1 : 16-bit YCrCb 4:2:2 output format.*/
    +#define LLCMODE 0x20 /* 1 : LLC output mode. */
    + /* 0 : free-run output mode */
    +#define AINC 0x10 /* Serial interface auto-indexing control */
    + /* 0 : auto-increment */
    + /* 1 : non-auto */
    +#define VSCTL 0x08 /* 1 : Vertical out ctrl by DVALID */
    + /* 0 : Vertical out ctrl by HACTIVE and DVALID */
    +#define OEN_TRI_SEL_MASK 0x07
    +#define OEN_TRI_SEL_ALL_ON 0x00 /* Enable output for Rev0/Rev1 */
    +#define OEN_TRI_SEL_ALL_OFF_r0 0x06 /* All tri-stated for Rev0 */
    +#define OEN_TRI_SEL_ALL_OFF_r1 0x07 /* All tri-stated for Rev1 */
    +
    +/* OUTCTR1 */
    +#define VSP_LO 0x00 /* 0 : VS pin output polarity is active low */
    +#define VSP_HI 0x80 /* 1 : VS pin output polarity is active high. */
    + /* VS pin output control */
    +#define VSSL_VSYNC 0x00 /* 0 : VSYNC */
    +#define VSSL_VACT 0x10 /* 1 : VACT */
    +#define VSSL_FIELD 0x20 /* 2 : FIELD */
    +#define VSSL_VVALID 0x30 /* 3 : VVALID */
    +#define VSSL_ZERO 0x70 /* 7 : 0 */
    +#define HSP_LOW 0x00 /* 0 : HS pin output polarity is active low */
    +#define HSP_HI 0x08 /* 1 : HS pin output polarity is active high.*/
    + /* HS pin output control */
    +#define HSSL_HACT 0x00 /* 0 : HACT */
    +#define HSSL_HSYNC 0x01 /* 1 : HSYNC */
    +#define HSSL_DVALID 0x02 /* 2 : DVALID */
    +#define HSSL_HLOCK 0x03 /* 3 : HLOCK */
    +#define HSSL_ASYNCW 0x04 /* 4 : ASYNCW */
    +#define HSSL_ZERO 0x07 /* 7 : 0 */
    +
    +/* ACNTL1 */
    +#define SRESET 0x80 /* resets the device to its default state
    + * but all register content remain unchanged.
    + * This bit is self-resetting.
    + */
    +#define ACNTL1_PDN_MASK 0x0e
    +#define CLK_PDN 0x08 /* system clock power down */
    +#define Y_PDN 0x04 /* Luma ADC power down */
    +#define C_PDN 0x02 /* Chroma ADC power down */
    +
    +/* ACNTL2 */
    +#define ACNTL2_PDN_MASK 0x40
    +#define PLL_PDN 0x40 /* PLL power down */
    +
    +/* VBICNTL */
    +
    +/* RTSEL : control the real time signal output from the MPOUT pin */
    +#define RTSEL_MASK 0x07
    +#define RTSEL_VLOSS 0x00 /* 0000 = Video loss */
    +#define RTSEL_HLOCK 0x01 /* 0001 = H-lock */
    +#define RTSEL_SLOCK 0x02 /* 0010 = S-lock */
    +#define RTSEL_VLOCK 0x03 /* 0011 = V-lock */
    +#define RTSEL_MONO 0x04 /* 0100 = MONO */
    +#define RTSEL_DET50 0x05 /* 0101 = DET50 */
    +#define RTSEL_FIELD 0x06 /* 0110 = FIELD */
    +#define RTSEL_RTCO 0x07 /* 0111 = RTCO ( Real Time Control ) */
    +
    +/* HSYNC start and end are constant for now */
    +#define HSYNC_START 0x0260
    +#define HSYNC_END 0x0300
    +
    +/*
    + * structure
    + */
    +
    +struct regval_list {
    + unsigned char reg_num;
    + unsigned char value;
    +};
    +
    +struct tw9910_scale_ctrl {
    + char *name;
    + unsigned short width;
    + unsigned short height;
    + u16 hscale;
    + u16 vscale;
    +};
    +
    +struct tw9910_priv {
    + struct v4l2_subdev subdev;
    + struct v4l2_clk *clk;
    + struct tw9910_video_info *info;
    + const struct tw9910_scale_ctrl *scale;
    + v4l2_std_id norm;
    + u32 revision;
    +};
    +
    +static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = {
    + {
    + .name = "NTSC SQ",
    + .width = 640,
    + .height = 480,
    + .hscale = 0x0100,
    + .vscale = 0x0100,
    + },
    + {
    + .name = "NTSC CCIR601",
    + .width = 720,
    + .height = 480,
    + .hscale = 0x0100,
    + .vscale = 0x0100,
    + },
    + {
    + .name = "NTSC SQ (CIF)",
    + .width = 320,
    + .height = 240,
    + .hscale = 0x0200,
    + .vscale = 0x0200,
    + },
    + {
    + .name = "NTSC CCIR601 (CIF)",
    + .width = 360,
    + .height = 240,
    + .hscale = 0x0200,
    + .vscale = 0x0200,
    + },
    + {
    + .name = "NTSC SQ (QCIF)",
    + .width = 160,
    + .height = 120,
    + .hscale = 0x0400,
    + .vscale = 0x0400,
    + },
    + {
    + .name = "NTSC CCIR601 (QCIF)",
    + .width = 180,
    + .height = 120,
    + .hscale = 0x0400,
    + .vscale = 0x0400,
    + },
    +};
    +
    +static const struct tw9910_scale_ctrl tw9910_pal_scales[] = {
    + {
    + .name = "PAL SQ",
    + .width = 768,
    + .height = 576,
    + .hscale = 0x0100,
    + .vscale = 0x0100,
    + },
    + {
    + .name = "PAL CCIR601",
    + .width = 720,
    + .height = 576,
    + .hscale = 0x0100,
    + .vscale = 0x0100,
    + },
    + {
    + .name = "PAL SQ (CIF)",
    + .width = 384,
    + .height = 288,
    + .hscale = 0x0200,
    + .vscale = 0x0200,
    + },
    + {
    + .name = "PAL CCIR601 (CIF)",
    + .width = 360,
    + .height = 288,
    + .hscale = 0x0200,
    + .vscale = 0x0200,
    + },
    + {
    + .name = "PAL SQ (QCIF)",
    + .width = 192,
    + .height = 144,
    + .hscale = 0x0400,
    + .vscale = 0x0400,
    + },
    + {
    + .name = "PAL CCIR601 (QCIF)",
    + .width = 180,
    + .height = 144,
    + .hscale = 0x0400,
    + .vscale = 0x0400,
    + },
    +};
    +
    +/*
    + * general function
    + */
    +static struct tw9910_priv *to_tw9910(const struct i2c_client *client)
    +{
    + return container_of(i2c_get_clientdata(client), struct tw9910_priv,
    + subdev);
    +}
    +
    +static int tw9910_mask_set(struct i2c_client *client, u8 command,
    + u8 mask, u8 set)
    +{
    + s32 val = i2c_smbus_read_byte_data(client, command);
    + if (val < 0)
    + return val;
    +
    + val &= ~mask;
    + val |= set & mask;
    +
    + return i2c_smbus_write_byte_data(client, command, val);
    +}
    +
    +static int tw9910_set_scale(struct i2c_client *client,
    + const struct tw9910_scale_ctrl *scale)
    +{
    + int ret;
    +
    + ret = i2c_smbus_write_byte_data(client, SCALE_HI,
    + (scale->vscale & 0x0F00) >> 4 |
    + (scale->hscale & 0x0F00) >> 8);
    + if (ret < 0)
    + return ret;
    +
    + ret = i2c_smbus_write_byte_data(client, HSCALE_LO,
    + scale->hscale & 0x00FF);
    + if (ret < 0)
    + return ret;
    +
    + ret = i2c_smbus_write_byte_data(client, VSCALE_LO,
    + scale->vscale & 0x00FF);
    +
    + return ret;
    +}
    +
    +static int tw9910_set_hsync(struct i2c_client *client)
    +{
    + struct tw9910_priv *priv = to_tw9910(client);
    + int ret;
    +
    + /* bit 10 - 3 */
    + ret = i2c_smbus_write_byte_data(client, HSBEGIN,
    + (HSYNC_START & 0x07F8) >> 3);
    + if (ret < 0)
    + return ret;
    +
    + /* bit 10 - 3 */
    + ret = i2c_smbus_write_byte_data(client, HSEND,
    + (HSYNC_END & 0x07F8) >> 3);
    + if (ret < 0)
    + return ret;
    +
    + /* So far only revisions 0 and 1 have been seen */
    + /* bit 2 - 0 */
    + if (1 == priv->revision)
    + ret = tw9910_mask_set(client, HSLOWCTL, 0x77,
    + (HSYNC_START & 0x0007) << 4 |
    + (HSYNC_END & 0x0007));
    +
    + return ret;
    +}
    +
    +static void tw9910_reset(struct i2c_client *client)
    +{
    + tw9910_mask_set(client, ACNTL1, SRESET, SRESET);
    + msleep(1);
    +}
    +
    +static int tw9910_power(struct i2c_client *client, int enable)
    +{
    + int ret;
    + u8 acntl1;
    + u8 acntl2;
    +
    + if (enable) {
    + acntl1 = 0;
    + acntl2 = 0;
    + } else {
    + acntl1 = CLK_PDN | Y_PDN | C_PDN;
    + acntl2 = PLL_PDN;
    + }
    +
    + ret = tw9910_mask_set(client, ACNTL1, ACNTL1_PDN_MASK, acntl1);
    + if (ret < 0)
    + return ret;
    +
    + return tw9910_mask_set(client, ACNTL2, ACNTL2_PDN_MASK, acntl2);
    +}
    +
    +static const struct tw9910_scale_ctrl *tw9910_select_norm(v4l2_std_id norm,
    + u32 width, u32 height)
    +{
    + const struct tw9910_scale_ctrl *scale;
    + const struct tw9910_scale_ctrl *ret = NULL;
    + __u32 diff = 0xffffffff, tmp;
    + int size, i;
    +
    + if (norm & V4L2_STD_NTSC) {
    + scale = tw9910_ntsc_scales;
    + size = ARRAY_SIZE(tw9910_ntsc_scales);
    + } else if (norm & V4L2_STD_PAL) {
    + scale = tw9910_pal_scales;
    + size = ARRAY_SIZE(tw9910_pal_scales);
    + } else {
    + return NULL;
    + }
    +
    + for (i = 0; i < size; i++) {
    + tmp = abs(width - scale[i].width) +
    + abs(height - scale[i].height);
    + if (tmp < diff) {
    + diff = tmp;
    + ret = scale + i;
    + }
    + }
    +
    + return ret;
    +}
    +
    +/*
    + * subdevice operations
    + */
    +static int tw9910_s_stream(struct v4l2_subdev *sd, int enable)
    +{
    + struct i2c_client *client = v4l2_get_subdevdata(sd);
    + struct tw9910_priv *priv = to_tw9910(client);
    + u8 val;
    + int ret;
    +
    + if (!enable) {
    + switch (priv->revision) {
    + case 0:
    + val = OEN_TRI_SEL_ALL_OFF_r0;
    + break;
    + case 1:
    + val = OEN_TRI_SEL_ALL_OFF_r1;
    + break;
    + default:
    + dev_err(&client->dev, "un-supported revision\n");
    + return -EINVAL;
    + }
    + } else {
    + val = OEN_TRI_SEL_ALL_ON;
    +
    + if (!priv->scale) {
    + dev_err(&client->dev, "norm select error\n");
    + return -EPERM;
    + }
    +
    + dev_dbg(&client->dev, "%s %dx%d\n",
    + priv->scale->name,
    + priv->scale->width,
    + priv->scale->height);
    + }
    +
    + ret = tw9910_mask_set(client, OPFORM, OEN_TRI_SEL_MASK, val);
    + if (ret < 0)
    + return ret;
    +
    + return tw9910_power(client, enable);
    +}
    +
    +static int tw9910_g_std(struct v4l2_subdev *sd, v4l2_std_id *norm)
    +{
    + struct i2c_client *client = v4l2_get_subdevdata(sd);
    + struct tw9910_priv *priv = to_tw9910(client);
    +
    + *norm = priv->norm;
    +
    + return 0;
    +}
    +
    +static int tw9910_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
    +{
    + struct i2c_client *client = v4l2_get_subdevdata(sd);
    + struct tw9910_priv *priv = to_tw9910(client);
    + const unsigned hact = 720;
    + const unsigned hdelay = 15;
    + unsigned vact;
    + unsigned vdelay;
    + int ret;
    +
    + if (!(norm & (V4L2_STD_NTSC | V4L2_STD_PAL)))
    + return -EINVAL;
    +
    + priv->norm = norm;
    + if (norm & V4L2_STD_525_60) {
    + vact = 240;
    + vdelay = 18;
    + ret = tw9910_mask_set(client, VVBI, 0x10, 0x10);
    + } else {
    + vact = 288;
    + vdelay = 24;
    + ret = tw9910_mask_set(client, VVBI, 0x10, 0x00);
    + }
    + if (!ret)
    + ret = i2c_smbus_write_byte_data(client, CROP_HI,
    + ((vdelay >> 2) & 0xc0) |
    + ((vact >> 4) & 0x30) |
    + ((hdelay >> 6) & 0x0c) |
    + ((hact >> 8) & 0x03));
    + if (!ret)
    + ret = i2c_smbus_write_byte_data(client, VDELAY_LO,
    + vdelay & 0xff);
    + if (!ret)
    + ret = i2c_smbus_write_byte_data(client, VACTIVE_LO,
    + vact & 0xff);
    +
    + return ret;
    +}
    +
    +#ifdef CONFIG_VIDEO_ADV_DEBUG
    +static int tw9910_g_register(struct v4l2_subdev *sd,
    + struct v4l2_dbg_register *reg)
    +{
    + struct i2c_client *client = v4l2_get_subdevdata(sd);
    + int ret;
    +
    + if (reg->reg > 0xff)
    + return -EINVAL;
    +
    + reg->size = 1;
    + ret = i2c_smbus_read_byte_data(client, reg->reg);
    + if (ret < 0)
    + return ret;
    +
    + /*
    + * ret = int
    + * reg->val = __u64
    + */
    + reg->val = (__u64)ret;
    +
    + return 0;
    +}
    +
    +static int tw9910_s_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 i2c_smbus_write_byte_data(client, reg->reg, reg->val);
    +}
    +#endif
    +
    +static int tw9910_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 tw9910_priv *priv = to_tw9910(client);
    +
    + return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
    +}
    +
    +static int tw9910_set_frame(struct v4l2_subdev *sd, u32 *width, u32 *height)
    +{
    + struct i2c_client *client = v4l2_get_subdevdata(sd);
    + struct tw9910_priv *priv = to_tw9910(client);
    + int ret = -EINVAL;
    + u8 val;
    +
    + /*
    + * select suitable norm
    + */
    + priv->scale = tw9910_select_norm(priv->norm, *width, *height);
    + if (!priv->scale)
    + goto tw9910_set_fmt_error;
    +
    + /*
    + * reset hardware
    + */
    + tw9910_reset(client);
    +
    + /*
    + * set bus width
    + */
    + val = 0x00;
    + if (SOCAM_DATAWIDTH_16 == priv->info->buswidth)
    + val = LEN;
    +
    + ret = tw9910_mask_set(client, OPFORM, LEN, val);
    + if (ret < 0)
    + goto tw9910_set_fmt_error;
    +
    + /*
    + * select MPOUT behavior
    + */
    + switch (priv->info->mpout) {
    + case TW9910_MPO_VLOSS:
    + val = RTSEL_VLOSS; break;
    + case TW9910_MPO_HLOCK:
    + val = RTSEL_HLOCK; break;
    + case TW9910_MPO_SLOCK:
    + val = RTSEL_SLOCK; break;
    + case TW9910_MPO_VLOCK:
    + val = RTSEL_VLOCK; break;
    + case TW9910_MPO_MONO:
    + val = RTSEL_MONO; break;
    + case TW9910_MPO_DET50:
    + val = RTSEL_DET50; break;
    + case TW9910_MPO_FIELD:
    + val = RTSEL_FIELD; break;
    + case TW9910_MPO_RTCO:
    + val = RTSEL_RTCO; break;
    + default:
    + val = 0;
    + }
    +
    + ret = tw9910_mask_set(client, VBICNTL, RTSEL_MASK, val);
    + if (ret < 0)
    + goto tw9910_set_fmt_error;
    +
    + /*
    + * set scale
    + */
    + ret = tw9910_set_scale(client, priv->scale);
    + if (ret < 0)
    + goto tw9910_set_fmt_error;
    +
    + /*
    + * set hsync
    + */
    + ret = tw9910_set_hsync(client);
    + if (ret < 0)
    + goto tw9910_set_fmt_error;
    +
    + *width = priv->scale->width;
    + *height = priv->scale->height;
    +
    + return ret;
    +
    +tw9910_set_fmt_error:
    +
    + tw9910_reset(client);
    + priv->scale = NULL;
    +
    + return ret;
    +}
    +
    +static int tw9910_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 tw9910_priv *priv = to_tw9910(client);
    +
    + if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
    + return -EINVAL;
    + /* Only CROP, CROP_DEFAULT and CROP_BOUNDS are supported */
    + if (sel->target > V4L2_SEL_TGT_CROP_BOUNDS)
    + return -EINVAL;
    +
    + sel->r.left = 0;
    + sel->r.top = 0;
    + if (priv->norm & V4L2_STD_NTSC) {
    + sel->r.width = 640;
    + sel->r.height = 480;
    + } else {
    + sel->r.width = 768;
    + sel->r.height = 576;
    + }
    + return 0;
    +}
    +
    +static int tw9910_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 tw9910_priv *priv = to_tw9910(client);
    +
    + if (format->pad)
    + return -EINVAL;
    +
    + if (!priv->scale) {
    + priv->scale = tw9910_select_norm(priv->norm, 640, 480);
    + if (!priv->scale)
    + return -EINVAL;
    + }
    +
    + mf->width = priv->scale->width;
    + mf->height = priv->scale->height;
    + mf->code = MEDIA_BUS_FMT_UYVY8_2X8;
    + mf->colorspace = V4L2_COLORSPACE_SMPTE170M;
    + mf->field = V4L2_FIELD_INTERLACED_BT;
    +
    + return 0;
    +}
    +
    +static int tw9910_s_fmt(struct v4l2_subdev *sd,
    + struct v4l2_mbus_framefmt *mf)
    +{
    + u32 width = mf->width, height = mf->height;
    + int ret;
    +
    + WARN_ON(mf->field != V4L2_FIELD_ANY &&
    + mf->field != V4L2_FIELD_INTERLACED_BT);
    +
    + /*
    + * check color format
    + */
    + if (mf->code != MEDIA_BUS_FMT_UYVY8_2X8)
    + return -EINVAL;
    +
    + mf->colorspace = V4L2_COLORSPACE_SMPTE170M;
    +
    + ret = tw9910_set_frame(sd, &width, &height);
    + if (!ret) {
    + mf->width = width;
    + mf->height = height;
    + }
    + return ret;
    +}
    +
    +static int tw9910_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 tw9910_priv *priv = to_tw9910(client);
    + const struct tw9910_scale_ctrl *scale;
    +
    + if (format->pad)
    + return -EINVAL;
    +
    + if (V4L2_FIELD_ANY == mf->field) {
    + mf->field = V4L2_FIELD_INTERLACED_BT;
    + } else if (V4L2_FIELD_INTERLACED_BT != mf->field) {
    + dev_err(&client->dev, "Field type %d invalid.\n", mf->field);
    + return -EINVAL;
    + }
    +
    + mf->code = MEDIA_BUS_FMT_UYVY8_2X8;
    + mf->colorspace = V4L2_COLORSPACE_SMPTE170M;
    +
    + /*
    + * select suitable norm
    + */
    + scale = tw9910_select_norm(priv->norm, mf->width, mf->height);
    + if (!scale)
    + return -EINVAL;
    +
    + mf->width = scale->width;
    + mf->height = scale->height;
    +
    + if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
    + return tw9910_s_fmt(sd, mf);
    + cfg->try_fmt = *mf;
    + return 0;
    +}
    +
    +static int tw9910_video_probe(struct i2c_client *client)
    +{
    + struct tw9910_priv *priv = to_tw9910(client);
    + s32 id;
    + int ret;
    +
    + /*
    + * tw9910 only use 8 or 16 bit bus width
    + */
    + if (SOCAM_DATAWIDTH_16 != priv->info->buswidth &&
    + SOCAM_DATAWIDTH_8 != priv->info->buswidth) {
    + dev_err(&client->dev, "bus width error\n");
    + return -ENODEV;
    + }
    +
    + ret = tw9910_s_power(&priv->subdev, 1);
    + if (ret < 0)
    + return ret;
    +
    + /*
    + * check and show Product ID
    + * So far only revisions 0 and 1 have been seen
    + */
    + id = i2c_smbus_read_byte_data(client, ID);
    + priv->revision = GET_REV(id);
    + id = GET_ID(id);
    +
    + if (0x0B != id ||
    + 0x01 < priv->revision) {
    + dev_err(&client->dev,
    + "Product ID error %x:%x\n",
    + id, priv->revision);
    + ret = -ENODEV;
    + goto done;
    + }
    +
    + dev_info(&client->dev,
    + "tw9910 Product ID %0x:%0x\n", id, priv->revision);
    +
    + priv->norm = V4L2_STD_NTSC;
    + priv->scale = &tw9910_ntsc_scales[0];
    +
    +done:
    + tw9910_s_power(&priv->subdev, 0);
    + return ret;
    +}
    +
    +static const struct v4l2_subdev_core_ops tw9910_subdev_core_ops = {
    +#ifdef CONFIG_VIDEO_ADV_DEBUG
    + .g_register = tw9910_g_register,
    + .s_register = tw9910_s_register,
    +#endif
    + .s_power = tw9910_s_power,
    +};
    +
    +static int tw9910_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)
    + return -EINVAL;
    +
    + code->code = MEDIA_BUS_FMT_UYVY8_2X8;
    + return 0;
    +}
    +
    +static int tw9910_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_PCLK_SAMPLE_RISING | V4L2_MBUS_MASTER |
    + V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW |
    + V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW |
    + V4L2_MBUS_DATA_ACTIVE_HIGH;
    + cfg->type = V4L2_MBUS_PARALLEL;
    + cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
    +
    + return 0;
    +}
    +
    +static int tw9910_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);
    + u8 val = VSSL_VVALID | HSSL_DVALID;
    + unsigned long flags = soc_camera_apply_board_flags(ssdd, cfg);
    +
    + /*
    + * set OUTCTR1
    + *
    + * We use VVALID and DVALID signals to control VSYNC and HSYNC
    + * outputs, in this mode their polarity is inverted.
    + */
    + if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
    + val |= HSP_HI;
    +
    + if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
    + val |= VSP_HI;
    +
    + return i2c_smbus_write_byte_data(client, OUTCTR1, val);
    +}
    +
    +static int tw9910_g_tvnorms(struct v4l2_subdev *sd, v4l2_std_id *norm)
    +{
    + *norm = V4L2_STD_NTSC | V4L2_STD_PAL;
    + return 0;
    +}
    +
    +static const struct v4l2_subdev_video_ops tw9910_subdev_video_ops = {
    + .s_std = tw9910_s_std,
    + .g_std = tw9910_g_std,
    + .s_stream = tw9910_s_stream,
    + .g_mbus_config = tw9910_g_mbus_config,
    + .s_mbus_config = tw9910_s_mbus_config,
    + .g_tvnorms = tw9910_g_tvnorms,
    +};
    +
    +static const struct v4l2_subdev_pad_ops tw9910_subdev_pad_ops = {
    + .enum_mbus_code = tw9910_enum_mbus_code,
    + .get_selection = tw9910_get_selection,
    + .get_fmt = tw9910_get_fmt,
    + .set_fmt = tw9910_set_fmt,
    +};
    +
    +static const struct v4l2_subdev_ops tw9910_subdev_ops = {
    + .core = &tw9910_subdev_core_ops,
    + .video = &tw9910_subdev_video_ops,
    + .pad = &tw9910_subdev_pad_ops,
    +};
    +
    +/*
    + * i2c_driver function
    + */
    +
    +static int tw9910_probe(struct i2c_client *client,
    + const struct i2c_device_id *did)
    +
    +{
    + struct tw9910_priv *priv;
    + struct tw9910_video_info *info;
    + struct i2c_adapter *adapter =
    + to_i2c_adapter(client->dev.parent);
    + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
    + int ret;
    +
    + if (!ssdd || !ssdd->drv_priv) {
    + dev_err(&client->dev, "TW9910: missing platform data!\n");
    + return -EINVAL;
    + }
    +
    + info = ssdd->drv_priv;
    +
    + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
    + dev_err(&client->dev,
    + "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE_DATA\n");
    + return -EIO;
    + }
    +
    + priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
    + if (!priv)
    + return -ENOMEM;
    +
    + priv->info = info;
    +
    + v4l2_i2c_subdev_init(&priv->subdev, client, &tw9910_subdev_ops);
    +
    + priv->clk = v4l2_clk_get(&client->dev, "mclk");
    + if (IS_ERR(priv->clk))
    + return PTR_ERR(priv->clk);
    +
    + ret = tw9910_video_probe(client);
    + if (ret < 0)
    + v4l2_clk_put(priv->clk);
    +
    + return ret;
    +}
    +
    +static int tw9910_remove(struct i2c_client *client)
    +{
    + struct tw9910_priv *priv = to_tw9910(client);
    + v4l2_clk_put(priv->clk);
    + return 0;
    +}
    +
    +static const struct i2c_device_id tw9910_id[] = {
    + { "tw9910", 0 },
    + { }
    +};
    +MODULE_DEVICE_TABLE(i2c, tw9910_id);
    +
    +static struct i2c_driver tw9910_i2c_driver = {
    + .driver = {
    + .name = "tw9910",
    + },
    + .probe = tw9910_probe,
    + .remove = tw9910_remove,
    + .id_table = tw9910_id,
    +};
    +
    +module_i2c_driver(tw9910_i2c_driver);
    +
    +MODULE_DESCRIPTION("SoC Camera driver for tw9910");
    +MODULE_AUTHOR("Kuninori Morimoto");
    +MODULE_LICENSE("GPL v2");
    --
    2.7.4
    \
     
     \ /
      Last update: 2018-01-26 14:58    [W:4.165 / U:1.136 seconds]
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