From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jacopo Mondi Subject: [PATCH v7 08/11] media: i2c: Copy tw9910 soc_camera sensor driver Date: Fri, 26 Jan 2018 14:55:27 +0100 Message-ID: <1516974930-11713-9-git-send-email-jacopo+renesas@jmondi.org> References: <1516974930-11713-1-git-send-email-jacopo+renesas@jmondi.org> Return-path: In-Reply-To: <1516974930-11713-1-git-send-email-jacopo+renesas@jmondi.org> Sender: linux-kernel-owner@vger.kernel.org To: laurent.pinchart@ideasonboard.com, magnus.damm@gmail.com, geert@glider.be, hverkuil@xs4all.nl, mchehab@kernel.org, festevam@gmail.com, sakari.ailus@iki.fi, robh+dt@kernel.org, mark.rutland@arm.com, pombredanne@nexb.com Cc: Jacopo Mondi , linux-renesas-soc@vger.kernel.org, linux-media@vger.kernel.org, linux-sh@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org 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 Acked-by: Laurent Pinchart Acked-by: Hans Verkuil --- 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 + * + * Based on ov772x driver, + * + * Copyright (C) 2008 Kuninori Morimoto + * Copyright 2006-7 Jonathan Corbet + * Copyright (C) 2008 Magnus Damm + * Copyright (C) 2008, Guennadi Liakhovetski + * + * 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 +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#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