| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jacopo Mondi | 4165 | 97.98% | 6 | 46.15% |
| Alexey Khoroshilov | 54 | 1.27% | 2 | 15.38% |
| Mauro Carvalho Chehab | 14 | 0.33% | 1 | 7.69% |
| Tomi Valkeinen | 11 | 0.26% | 1 | 7.69% |
| Joe Perches | 5 | 0.12% | 1 | 7.69% |
| Wolfram Sang | 1 | 0.02% | 1 | 7.69% |
| Uwe Kleine-König | 1 | 0.02% | 1 | 7.69% |
| Total | 4251 | 13 |
// SPDX-License-Identifier: GPL-2.0 /* * tw9910 Video Driver * * Copyright (C) 2017 Jacopo Mondi <jacopo+renesas@jmondi.org> * * 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> */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/v4l2-mediabus.h> #include <linux/videodev2.h> #include <media/i2c/tw9910.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 clk *clk; struct tw9910_video_info *info; struct gpio_desc *pdn_gpio; struct gpio_desc *rstb_gpio; 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 (priv->revision == 1) 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); usleep_range(1000, 5000); } 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 int hact = 720; const unsigned int hdelay = 15; unsigned int vact; unsigned int 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 void tw9910_set_gpio_value(struct gpio_desc *desc, int value) { if (desc) { gpiod_set_value(desc, value); usleep_range(500, 1000); } } static int tw9910_power_on(struct tw9910_priv *priv) { struct i2c_client *client = v4l2_get_subdevdata(&priv->subdev); int ret; if (priv->clk) { ret = clk_prepare_enable(priv->clk); if (ret) return ret; } tw9910_set_gpio_value(priv->pdn_gpio, 0); /* * FIXME: The reset signal is connected to a shared GPIO on some * platforms (namely the SuperH Migo-R). Until a framework becomes * available to handle this cleanly, request the GPIO temporarily * to avoid conflicts. */ priv->rstb_gpio = gpiod_get_optional(&client->dev, "rstb", GPIOD_OUT_LOW); if (IS_ERR(priv->rstb_gpio)) { dev_info(&client->dev, "Unable to get GPIO \"rstb\""); clk_disable_unprepare(priv->clk); tw9910_set_gpio_value(priv->pdn_gpio, 1); return PTR_ERR(priv->rstb_gpio); } if (priv->rstb_gpio) { tw9910_set_gpio_value(priv->rstb_gpio, 1); tw9910_set_gpio_value(priv->rstb_gpio, 0); gpiod_put(priv->rstb_gpio); } return 0; } static int tw9910_power_off(struct tw9910_priv *priv) { clk_disable_unprepare(priv->clk); tw9910_set_gpio_value(priv->pdn_gpio, 1); return 0; } static int tw9910_s_power(struct v4l2_subdev *sd, int on) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct tw9910_priv *priv = to_tw9910(client); return on ? tw9910_power_on(priv) : tw9910_power_off(priv); } 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 (priv->info->buswidth == 16) 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_state *sd_state, 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_state *sd_state, 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) return ret; mf->width = width; mf->height = height; return 0; } static int tw9910_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *format) { struct v4l2_mbus_framefmt *mf = &format->format; struct i2c_client *client = v4l2_get_subdevdata(sd); struct tw9910_priv *priv = to_tw9910(client); const struct tw9910_scale_ctrl *scale; if (format->pad) return -EINVAL; if (mf->field == V4L2_FIELD_ANY) { mf->field = V4L2_FIELD_INTERLACED_BT; } else if (mf->field != V4L2_FIELD_INTERLACED_BT) { 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); sd_state->pads->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 (priv->info->buswidth != 16 && priv->info->buswidth != 8) { 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 (id != 0x0b || priv->revision > 0x01) { 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_state *sd_state, 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_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_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 = client->adapter; int ret; if (!client->dev.platform_data) { dev_err(&client->dev, "TW9910: missing platform data!\n"); return -EINVAL; } info = client->dev.platform_data; 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 = clk_get(&client->dev, "xti"); if (PTR_ERR(priv->clk) == -ENOENT) { priv->clk = NULL; } else if (IS_ERR(priv->clk)) { dev_err(&client->dev, "Unable to get xti clock\n"); return PTR_ERR(priv->clk); } priv->pdn_gpio = gpiod_get_optional(&client->dev, "pdn", GPIOD_OUT_HIGH); if (IS_ERR(priv->pdn_gpio)) { dev_info(&client->dev, "Unable to get GPIO \"pdn\""); ret = PTR_ERR(priv->pdn_gpio); goto error_clk_put; } ret = tw9910_video_probe(client); if (ret < 0) goto error_gpio_put; ret = v4l2_async_register_subdev(&priv->subdev); if (ret) goto error_gpio_put; return ret; error_gpio_put: if (priv->pdn_gpio) gpiod_put(priv->pdn_gpio); error_clk_put: clk_put(priv->clk); return ret; } static void tw9910_remove(struct i2c_client *client) { struct tw9910_priv *priv = to_tw9910(client); if (priv->pdn_gpio) gpiod_put(priv->pdn_gpio); clk_put(priv->clk); v4l2_async_unregister_subdev(&priv->subdev); } 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("V4L2 driver for TW9910 video decoder"); MODULE_AUTHOR("Kuninori Morimoto"); MODULE_LICENSE("GPL v2");
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