4 * Copyright (C) 2008 Renesas Solutions Corp.
5 * Kuninori Morimoto <morimoto.kuninori@renesas.com>
7 * Based on ov772x driver,
9 * Copyright (C) 2008 Kuninori Morimoto <morimoto.kuninori@renesas.com>
10 * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
11 * Copyright (C) 2008 Magnus Damm
12 * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
19 #include <linux/init.h>
20 #include <linux/module.h>
21 #include <linux/i2c.h>
22 #include <linux/slab.h>
23 #include <linux/kernel.h>
24 #include <linux/delay.h>
25 #include <linux/videodev2.h>
26 #include <media/v4l2-chip-ident.h>
27 #include <media/v4l2-subdev.h>
28 #include <media/soc_camera.h>
29 #include <media/tw9910.h>
31 #define GET_ID(val) ((val & 0xF8) >> 3)
32 #define GET_REV(val) (val & 0x07)
37 #define ID 0x00 /* Product ID Code Register */
38 #define STATUS1 0x01 /* Chip Status Register I */
39 #define INFORM 0x02 /* Input Format */
40 #define OPFORM 0x03 /* Output Format Control Register */
41 #define DLYCTR 0x04 /* Hysteresis and HSYNC Delay Control */
42 #define OUTCTR1 0x05 /* Output Control I */
43 #define ACNTL1 0x06 /* Analog Control Register 1 */
44 #define CROP_HI 0x07 /* Cropping Register, High */
45 #define VDELAY_LO 0x08 /* Vertical Delay Register, Low */
46 #define VACTIVE_LO 0x09 /* Vertical Active Register, Low */
47 #define HDELAY_LO 0x0A /* Horizontal Delay Register, Low */
48 #define HACTIVE_LO 0x0B /* Horizontal Active Register, Low */
49 #define CNTRL1 0x0C /* Control Register I */
50 #define VSCALE_LO 0x0D /* Vertical Scaling Register, Low */
51 #define SCALE_HI 0x0E /* Scaling Register, High */
52 #define HSCALE_LO 0x0F /* Horizontal Scaling Register, Low */
53 #define BRIGHT 0x10 /* BRIGHTNESS Control Register */
54 #define CONTRAST 0x11 /* CONTRAST Control Register */
55 #define SHARPNESS 0x12 /* SHARPNESS Control Register I */
56 #define SAT_U 0x13 /* Chroma (U) Gain Register */
57 #define SAT_V 0x14 /* Chroma (V) Gain Register */
58 #define HUE 0x15 /* Hue Control Register */
60 #define CORING2 0x18 /* Coring and IF compensation */
61 #define VBICNTL 0x19 /* VBI Control Register */
62 #define ACNTL2 0x1A /* Analog Control 2 */
63 #define OUTCTR2 0x1B /* Output Control 2 */
64 #define SDT 0x1C /* Standard Selection */
65 #define SDTR 0x1D /* Standard Recognition */
66 #define TEST 0x1F /* Test Control Register */
67 #define CLMPG 0x20 /* Clamping Gain */
68 #define IAGC 0x21 /* Individual AGC Gain */
69 #define AGCGAIN 0x22 /* AGC Gain */
70 #define PEAKWT 0x23 /* White Peak Threshold */
71 #define CLMPL 0x24 /* Clamp level */
72 #define SYNCT 0x25 /* Sync Amplitude */
73 #define MISSCNT 0x26 /* Sync Miss Count Register */
74 #define PCLAMP 0x27 /* Clamp Position Register */
75 #define VCNTL1 0x28 /* Vertical Control I */
76 #define VCNTL2 0x29 /* Vertical Control II */
77 #define CKILL 0x2A /* Color Killer Level Control */
78 #define COMB 0x2B /* Comb Filter Control */
79 #define LDLY 0x2C /* Luma Delay and H Filter Control */
80 #define MISC1 0x2D /* Miscellaneous Control I */
81 #define LOOP 0x2E /* LOOP Control Register */
82 #define MISC2 0x2F /* Miscellaneous Control II */
83 #define MVSN 0x30 /* Macrovision Detection */
84 #define STATUS2 0x31 /* Chip STATUS II */
85 #define HFREF 0x32 /* H monitor */
86 #define CLMD 0x33 /* CLAMP MODE */
87 #define IDCNTL 0x34 /* ID Detection Control */
88 #define CLCNTL1 0x35 /* Clamp Control I */
89 #define ANAPLLCTL 0x4C
124 #define VBIDELAY 0x6F
131 #define FC27_ON 0x40 /* 1 : Input crystal clock frequency is 27MHz */
132 #define FC27_FF 0x00 /* 0 : Square pixel mode. */
133 /* Must use 24.54MHz for 60Hz field rate */
134 /* source or 29.5MHz for 50Hz field rate */
135 #define IFSEL_S 0x10 /* 01 : S-video decoding */
136 #define IFSEL_C 0x00 /* 00 : Composite video decoding */
137 /* Y input video selection */
138 #define YSEL_M0 0x00 /* 00 : Mux0 selected */
139 #define YSEL_M1 0x04 /* 01 : Mux1 selected */
140 #define YSEL_M2 0x08 /* 10 : Mux2 selected */
141 #define YSEL_M3 0x10 /* 11 : Mux3 selected */
144 #define MODE 0x80 /* 0 : CCIR601 compatible YCrCb 4:2:2 format */
145 /* 1 : ITU-R-656 compatible data sequence format */
146 #define LEN 0x40 /* 0 : 8-bit YCrCb 4:2:2 output format */
147 /* 1 : 16-bit YCrCb 4:2:2 output format.*/
148 #define LLCMODE 0x20 /* 1 : LLC output mode. */
149 /* 0 : free-run output mode */
150 #define AINC 0x10 /* Serial interface auto-indexing control */
151 /* 0 : auto-increment */
153 #define VSCTL 0x08 /* 1 : Vertical out ctrl by DVALID */
154 /* 0 : Vertical out ctrl by HACTIVE and DVALID */
155 #define OEN_TRI_SEL_MASK 0x07
156 #define OEN_TRI_SEL_ALL_ON 0x00 /* Enable output for Rev0/Rev1 */
157 #define OEN_TRI_SEL_ALL_OFF_r0 0x06 /* All tri-stated for Rev0 */
158 #define OEN_TRI_SEL_ALL_OFF_r1 0x07 /* All tri-stated for Rev1 */
161 #define VSP_LO 0x00 /* 0 : VS pin output polarity is active low */
162 #define VSP_HI 0x80 /* 1 : VS pin output polarity is active high. */
163 /* VS pin output control */
164 #define VSSL_VSYNC 0x00 /* 0 : VSYNC */
165 #define VSSL_VACT 0x10 /* 1 : VACT */
166 #define VSSL_FIELD 0x20 /* 2 : FIELD */
167 #define VSSL_VVALID 0x30 /* 3 : VVALID */
168 #define VSSL_ZERO 0x70 /* 7 : 0 */
169 #define HSP_LOW 0x00 /* 0 : HS pin output polarity is active low */
170 #define HSP_HI 0x08 /* 1 : HS pin output polarity is active high.*/
171 /* HS pin output control */
172 #define HSSL_HACT 0x00 /* 0 : HACT */
173 #define HSSL_HSYNC 0x01 /* 1 : HSYNC */
174 #define HSSL_DVALID 0x02 /* 2 : DVALID */
175 #define HSSL_HLOCK 0x03 /* 3 : HLOCK */
176 #define HSSL_ASYNCW 0x04 /* 4 : ASYNCW */
177 #define HSSL_ZERO 0x07 /* 7 : 0 */
180 #define SRESET 0x80 /* resets the device to its default state
181 * but all register content remain unchanged.
182 * This bit is self-resetting.
187 /* RTSEL : control the real time signal output from the MPOUT pin */
188 #define RTSEL_MASK 0x07
189 #define RTSEL_VLOSS 0x00 /* 0000 = Video loss */
190 #define RTSEL_HLOCK 0x01 /* 0001 = H-lock */
191 #define RTSEL_SLOCK 0x02 /* 0010 = S-lock */
192 #define RTSEL_VLOCK 0x03 /* 0011 = V-lock */
193 #define RTSEL_MONO 0x04 /* 0100 = MONO */
194 #define RTSEL_DET50 0x05 /* 0101 = DET50 */
195 #define RTSEL_FIELD 0x06 /* 0110 = FIELD */
196 #define RTSEL_RTCO 0x07 /* 0111 = RTCO ( Real Time Control ) */
203 unsigned char reg_num;
207 struct tw9910_scale_ctrl {
209 unsigned short width;
210 unsigned short height;
215 struct tw9910_cropping_ctrl {
222 struct tw9910_hsync_ctrl {
228 struct v4l2_subdev subdev;
229 struct tw9910_video_info *info;
230 const struct tw9910_scale_ctrl *scale;
238 #define ENDMARKER { 0xff, 0xff }
240 static const struct regval_list tw9910_default_regs[] =
242 { OUTCTR1, VSP_LO | VSSL_VVALID | HSP_HI | HSSL_HSYNC },
246 static const struct soc_camera_data_format tw9910_color_fmt[] = {
249 .fourcc = V4L2_PIX_FMT_VYUY,
251 .colorspace = V4L2_COLORSPACE_SMPTE170M,
255 static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = {
264 .name = "NTSC CCIR601",
271 .name = "NTSC SQ (CIF)",
278 .name = "NTSC CCIR601 (CIF)",
285 .name = "NTSC SQ (QCIF)",
292 .name = "NTSC CCIR601 (QCIF)",
300 static const struct tw9910_scale_ctrl tw9910_pal_scales[] = {
309 .name = "PAL CCIR601",
316 .name = "PAL SQ (CIF)",
323 .name = "PAL CCIR601 (CIF)",
330 .name = "PAL SQ (QCIF)",
337 .name = "PAL CCIR601 (QCIF)",
345 static const struct tw9910_cropping_ctrl tw9910_cropping_ctrl = {
352 static const struct tw9910_hsync_ctrl tw9910_hsync_ctrl = {
360 static struct tw9910_priv *to_tw9910(const struct i2c_client *client)
362 return container_of(i2c_get_clientdata(client), struct tw9910_priv,
366 static int tw9910_set_scale(struct i2c_client *client,
367 const struct tw9910_scale_ctrl *scale)
371 ret = i2c_smbus_write_byte_data(client, SCALE_HI,
372 (scale->vscale & 0x0F00) >> 4 |
373 (scale->hscale & 0x0F00) >> 8);
377 ret = i2c_smbus_write_byte_data(client, HSCALE_LO,
378 scale->hscale & 0x00FF);
382 ret = i2c_smbus_write_byte_data(client, VSCALE_LO,
383 scale->vscale & 0x00FF);
388 static int tw9910_set_cropping(struct i2c_client *client,
389 const struct tw9910_cropping_ctrl *cropping)
393 ret = i2c_smbus_write_byte_data(client, CROP_HI,
394 (cropping->vdelay & 0x0300) >> 2 |
395 (cropping->vactive & 0x0300) >> 4 |
396 (cropping->hdelay & 0x0300) >> 6 |
397 (cropping->hactive & 0x0300) >> 8);
401 ret = i2c_smbus_write_byte_data(client, VDELAY_LO,
402 cropping->vdelay & 0x00FF);
406 ret = i2c_smbus_write_byte_data(client, VACTIVE_LO,
407 cropping->vactive & 0x00FF);
411 ret = i2c_smbus_write_byte_data(client, HDELAY_LO,
412 cropping->hdelay & 0x00FF);
416 ret = i2c_smbus_write_byte_data(client, HACTIVE_LO,
417 cropping->hactive & 0x00FF);
422 static int tw9910_set_hsync(struct i2c_client *client,
423 const struct tw9910_hsync_ctrl *hsync)
428 ret = i2c_smbus_write_byte_data(client, HSGEGIN,
429 (hsync->start & 0x07F8) >> 3);
434 ret = i2c_smbus_write_byte_data(client, HSEND,
435 (hsync->end & 0x07F8) >> 3);
440 ret = i2c_smbus_read_byte_data(client, HSLOWCTL);
444 ret = i2c_smbus_write_byte_data(client, HSLOWCTL,
446 (hsync->start & 0x0007) << 4 |
447 (hsync->end & 0x0007));
452 static int tw9910_write_array(struct i2c_client *client,
453 const struct regval_list *vals)
455 while (vals->reg_num != 0xff) {
456 int ret = i2c_smbus_write_byte_data(client,
466 static int tw9910_mask_set(struct i2c_client *client, u8 command,
469 s32 val = i2c_smbus_read_byte_data(client, command);
476 return i2c_smbus_write_byte_data(client, command, val);
479 static void tw9910_reset(struct i2c_client *client)
481 i2c_smbus_write_byte_data(client, ACNTL1, SRESET);
485 static const struct tw9910_scale_ctrl*
486 tw9910_select_norm(struct soc_camera_device *icd, u32 width, u32 height)
488 const struct tw9910_scale_ctrl *scale;
489 const struct tw9910_scale_ctrl *ret = NULL;
490 v4l2_std_id norm = icd->vdev->current_norm;
491 __u32 diff = 0xffffffff, tmp;
494 if (norm & V4L2_STD_NTSC) {
495 scale = tw9910_ntsc_scales;
496 size = ARRAY_SIZE(tw9910_ntsc_scales);
497 } else if (norm & V4L2_STD_PAL) {
498 scale = tw9910_pal_scales;
499 size = ARRAY_SIZE(tw9910_pal_scales);
504 for (i = 0; i < size; i++) {
505 tmp = abs(width - scale[i].width) +
506 abs(height - scale[i].height);
517 * soc_camera_ops function
519 static int tw9910_s_stream(struct v4l2_subdev *sd, int enable)
521 struct i2c_client *client = sd->priv;
522 struct tw9910_priv *priv = to_tw9910(client);
527 switch (priv->revision) {
529 val = OEN_TRI_SEL_ALL_OFF_r0;
532 val = OEN_TRI_SEL_ALL_OFF_r1;
535 dev_err(&client->dev, "un-supported revision\n");
539 val = OEN_TRI_SEL_ALL_ON;
542 dev_err(&client->dev, "norm select error\n");
546 dev_dbg(&client->dev, "%s %dx%d\n",
549 priv->scale->height);
552 return tw9910_mask_set(client, OPFORM, OEN_TRI_SEL_MASK, val);
555 static int tw9910_set_bus_param(struct soc_camera_device *icd,
561 static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
563 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
564 struct tw9910_priv *priv = to_tw9910(client);
565 struct soc_camera_link *icl = to_soc_camera_link(icd);
566 unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
567 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
568 SOCAM_DATA_ACTIVE_HIGH | priv->info->buswidth;
570 return soc_camera_apply_sensor_flags(icl, flags);
573 static int tw9910_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
577 if (norm & (V4L2_STD_NTSC | V4L2_STD_PAL))
583 static int tw9910_enum_input(struct soc_camera_device *icd,
584 struct v4l2_input *inp)
586 inp->type = V4L2_INPUT_TYPE_TUNER;
587 inp->std = V4L2_STD_UNKNOWN;
588 strcpy(inp->name, "Video");
593 static int tw9910_g_chip_ident(struct v4l2_subdev *sd,
594 struct v4l2_dbg_chip_ident *id)
596 struct i2c_client *client = sd->priv;
597 struct tw9910_priv *priv = to_tw9910(client);
599 id->ident = V4L2_IDENT_TW9910;
600 id->revision = priv->revision;
605 #ifdef CONFIG_VIDEO_ADV_DEBUG
606 static int tw9910_g_register(struct v4l2_subdev *sd,
607 struct v4l2_dbg_register *reg)
609 struct i2c_client *client = sd->priv;
615 ret = i2c_smbus_read_byte_data(client, reg->reg);
623 reg->val = (__u64)ret;
628 static int tw9910_s_register(struct v4l2_subdev *sd,
629 struct v4l2_dbg_register *reg)
631 struct i2c_client *client = sd->priv;
633 if (reg->reg > 0xff ||
637 return i2c_smbus_write_byte_data(client, reg->reg, reg->val);
641 static int tw9910_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
643 struct v4l2_rect *rect = &a->c;
644 struct i2c_client *client = sd->priv;
645 struct tw9910_priv *priv = to_tw9910(client);
646 struct soc_camera_device *icd = client->dev.platform_data;
651 * select suitable norm
653 priv->scale = tw9910_select_norm(icd, rect->width, rect->height);
655 goto tw9910_set_fmt_error;
660 tw9910_reset(client);
661 ret = tw9910_write_array(client, tw9910_default_regs);
663 goto tw9910_set_fmt_error;
669 if (SOCAM_DATAWIDTH_16 == priv->info->buswidth)
672 ret = tw9910_mask_set(client, OPFORM, LEN, val);
674 goto tw9910_set_fmt_error;
677 * select MPOUT behavior
679 switch (priv->info->mpout) {
680 case TW9910_MPO_VLOSS:
681 val = RTSEL_VLOSS; break;
682 case TW9910_MPO_HLOCK:
683 val = RTSEL_HLOCK; break;
684 case TW9910_MPO_SLOCK:
685 val = RTSEL_SLOCK; break;
686 case TW9910_MPO_VLOCK:
687 val = RTSEL_VLOCK; break;
688 case TW9910_MPO_MONO:
689 val = RTSEL_MONO; break;
690 case TW9910_MPO_DET50:
691 val = RTSEL_DET50; break;
692 case TW9910_MPO_FIELD:
693 val = RTSEL_FIELD; break;
694 case TW9910_MPO_RTCO:
695 val = RTSEL_RTCO; break;
700 ret = tw9910_mask_set(client, VBICNTL, RTSEL_MASK, val);
702 goto tw9910_set_fmt_error;
707 ret = tw9910_set_scale(client, priv->scale);
709 goto tw9910_set_fmt_error;
714 ret = tw9910_set_cropping(client, &tw9910_cropping_ctrl);
716 goto tw9910_set_fmt_error;
721 ret = tw9910_set_hsync(client, &tw9910_hsync_ctrl);
723 goto tw9910_set_fmt_error;
725 rect->width = priv->scale->width;
726 rect->height = priv->scale->height;
732 tw9910_set_fmt_error:
734 tw9910_reset(client);
740 static int tw9910_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
742 struct i2c_client *client = sd->priv;
743 struct tw9910_priv *priv = to_tw9910(client);
747 struct v4l2_crop crop = {
755 ret = tw9910_s_crop(sd, &crop);
762 a->c.width = priv->scale->width;
763 a->c.height = priv->scale->height;
764 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
769 static int tw9910_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
773 a->bounds.width = 768;
774 a->bounds.height = 576;
777 a->defrect.width = 640;
778 a->defrect.height = 480;
779 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
780 a->pixelaspect.numerator = 1;
781 a->pixelaspect.denominator = 1;
786 static int tw9910_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
788 struct i2c_client *client = sd->priv;
789 struct tw9910_priv *priv = to_tw9910(client);
790 struct v4l2_pix_format *pix = &f->fmt.pix;
794 struct v4l2_crop crop = {
802 ret = tw9910_s_crop(sd, &crop);
807 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
809 pix->width = priv->scale->width;
810 pix->height = priv->scale->height;
811 pix->pixelformat = V4L2_PIX_FMT_VYUY;
812 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
813 pix->field = V4L2_FIELD_INTERLACED;
818 static int tw9910_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
820 struct i2c_client *client = sd->priv;
821 struct tw9910_priv *priv = to_tw9910(client);
822 struct v4l2_pix_format *pix = &f->fmt.pix;
823 /* See tw9910_s_crop() - no proper cropping support */
824 struct v4l2_crop a = {
829 .height = pix->height,
837 for (i = 0; i < ARRAY_SIZE(tw9910_color_fmt); i++)
838 if (pix->pixelformat == tw9910_color_fmt[i].fourcc)
841 if (i == ARRAY_SIZE(tw9910_color_fmt))
844 ret = tw9910_s_crop(sd, &a);
846 pix->width = priv->scale->width;
847 pix->height = priv->scale->height;
852 static int tw9910_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
854 struct i2c_client *client = sd->priv;
855 struct soc_camera_device *icd = client->dev.platform_data;
856 struct v4l2_pix_format *pix = &f->fmt.pix;
857 const struct tw9910_scale_ctrl *scale;
859 if (V4L2_FIELD_ANY == pix->field) {
860 pix->field = V4L2_FIELD_INTERLACED;
861 } else if (V4L2_FIELD_INTERLACED != pix->field) {
862 dev_err(&client->dev, "Field type invalid.\n");
867 * select suitable norm
869 scale = tw9910_select_norm(icd, pix->width, pix->height);
873 pix->width = scale->width;
874 pix->height = scale->height;
879 static int tw9910_video_probe(struct soc_camera_device *icd,
880 struct i2c_client *client)
882 struct tw9910_priv *priv = to_tw9910(client);
886 * We must have a parent by now. And it cannot be a wrong one.
887 * So this entire test is completely redundant.
889 if (!icd->dev.parent ||
890 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
894 * tw9910 only use 8 or 16 bit bus width
896 if (SOCAM_DATAWIDTH_16 != priv->info->buswidth &&
897 SOCAM_DATAWIDTH_8 != priv->info->buswidth) {
898 dev_err(&client->dev, "bus width error\n");
902 icd->formats = tw9910_color_fmt;
903 icd->num_formats = ARRAY_SIZE(tw9910_color_fmt);
906 * check and show Product ID
907 * So far only revisions 0 and 1 have been seen
909 id = i2c_smbus_read_byte_data(client, ID);
910 priv->revision = GET_REV(id);
914 0x01 < priv->revision) {
915 dev_err(&client->dev,
916 "Product ID error %x:%x\n",
921 dev_info(&client->dev,
922 "tw9910 Product ID %0x:%0x\n", id, priv->revision);
924 icd->vdev->tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL;
925 icd->vdev->current_norm = V4L2_STD_NTSC;
930 static struct soc_camera_ops tw9910_ops = {
931 .set_bus_param = tw9910_set_bus_param,
932 .query_bus_param = tw9910_query_bus_param,
933 .enum_input = tw9910_enum_input,
936 static struct v4l2_subdev_core_ops tw9910_subdev_core_ops = {
937 .g_chip_ident = tw9910_g_chip_ident,
938 .s_std = tw9910_s_std,
939 #ifdef CONFIG_VIDEO_ADV_DEBUG
940 .g_register = tw9910_g_register,
941 .s_register = tw9910_s_register,
945 static struct v4l2_subdev_video_ops tw9910_subdev_video_ops = {
946 .s_stream = tw9910_s_stream,
947 .g_fmt = tw9910_g_fmt,
948 .s_fmt = tw9910_s_fmt,
949 .try_fmt = tw9910_try_fmt,
950 .cropcap = tw9910_cropcap,
951 .g_crop = tw9910_g_crop,
952 .s_crop = tw9910_s_crop,
955 static struct v4l2_subdev_ops tw9910_subdev_ops = {
956 .core = &tw9910_subdev_core_ops,
957 .video = &tw9910_subdev_video_ops,
961 * i2c_driver function
964 static int tw9910_probe(struct i2c_client *client,
965 const struct i2c_device_id *did)
968 struct tw9910_priv *priv;
969 struct tw9910_video_info *info;
970 struct soc_camera_device *icd = client->dev.platform_data;
971 struct i2c_adapter *adapter =
972 to_i2c_adapter(client->dev.parent);
973 struct soc_camera_link *icl;
977 dev_err(&client->dev, "TW9910: missing soc-camera data!\n");
981 icl = to_soc_camera_link(icd);
982 if (!icl || !icl->priv)
987 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
988 dev_err(&client->dev,
989 "I2C-Adapter doesn't support "
990 "I2C_FUNC_SMBUS_BYTE_DATA\n");
994 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1000 v4l2_i2c_subdev_init(&priv->subdev, client, &tw9910_subdev_ops);
1002 icd->ops = &tw9910_ops;
1003 icd->iface = icl->bus_id;
1005 ret = tw9910_video_probe(icd, client);
1008 i2c_set_clientdata(client, NULL);
1015 static int tw9910_remove(struct i2c_client *client)
1017 struct tw9910_priv *priv = to_tw9910(client);
1018 struct soc_camera_device *icd = client->dev.platform_data;
1021 i2c_set_clientdata(client, NULL);
1026 static const struct i2c_device_id tw9910_id[] = {
1030 MODULE_DEVICE_TABLE(i2c, tw9910_id);
1032 static struct i2c_driver tw9910_i2c_driver = {
1036 .probe = tw9910_probe,
1037 .remove = tw9910_remove,
1038 .id_table = tw9910_id,
1044 static int __init tw9910_module_init(void)
1046 return i2c_add_driver(&tw9910_i2c_driver);
1049 static void __exit tw9910_module_exit(void)
1051 i2c_del_driver(&tw9910_i2c_driver);
1054 module_init(tw9910_module_init);
1055 module_exit(tw9910_module_exit);
1057 MODULE_DESCRIPTION("SoC Camera driver for tw9910");
1058 MODULE_AUTHOR("Kuninori Morimoto");
1059 MODULE_LICENSE("GPL v2");