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.
184 #define ACNTL1_PDN_MASK 0x0e
185 #define CLK_PDN 0x08 /* system clock power down */
186 #define Y_PDN 0x04 /* Luma ADC power down */
187 #define C_PDN 0x02 /* Chroma ADC power down */
190 #define ACNTL2_PDN_MASK 0x40
191 #define PLL_PDN 0x40 /* PLL power down */
195 /* RTSEL : control the real time signal output from the MPOUT pin */
196 #define RTSEL_MASK 0x07
197 #define RTSEL_VLOSS 0x00 /* 0000 = Video loss */
198 #define RTSEL_HLOCK 0x01 /* 0001 = H-lock */
199 #define RTSEL_SLOCK 0x02 /* 0010 = S-lock */
200 #define RTSEL_VLOCK 0x03 /* 0011 = V-lock */
201 #define RTSEL_MONO 0x04 /* 0100 = MONO */
202 #define RTSEL_DET50 0x05 /* 0101 = DET50 */
203 #define RTSEL_FIELD 0x06 /* 0110 = FIELD */
204 #define RTSEL_RTCO 0x07 /* 0111 = RTCO ( Real Time Control ) */
206 /* HSYNC start and end are constant for now */
207 #define HSYNC_START 0x0260
208 #define HSYNC_END 0x0300
215 unsigned char reg_num;
219 struct tw9910_scale_ctrl {
221 unsigned short width;
222 unsigned short height;
228 struct v4l2_subdev subdev;
229 struct tw9910_video_info *info;
230 const struct tw9910_scale_ctrl *scale;
234 static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = {
243 .name = "NTSC CCIR601",
250 .name = "NTSC SQ (CIF)",
257 .name = "NTSC CCIR601 (CIF)",
264 .name = "NTSC SQ (QCIF)",
271 .name = "NTSC CCIR601 (QCIF)",
279 static const struct tw9910_scale_ctrl tw9910_pal_scales[] = {
288 .name = "PAL CCIR601",
295 .name = "PAL SQ (CIF)",
302 .name = "PAL CCIR601 (CIF)",
309 .name = "PAL SQ (QCIF)",
316 .name = "PAL CCIR601 (QCIF)",
327 static struct tw9910_priv *to_tw9910(const struct i2c_client *client)
329 return container_of(i2c_get_clientdata(client), struct tw9910_priv,
333 static int tw9910_mask_set(struct i2c_client *client, u8 command,
336 s32 val = i2c_smbus_read_byte_data(client, command);
343 return i2c_smbus_write_byte_data(client, command, val);
346 static int tw9910_set_scale(struct i2c_client *client,
347 const struct tw9910_scale_ctrl *scale)
351 ret = i2c_smbus_write_byte_data(client, SCALE_HI,
352 (scale->vscale & 0x0F00) >> 4 |
353 (scale->hscale & 0x0F00) >> 8);
357 ret = i2c_smbus_write_byte_data(client, HSCALE_LO,
358 scale->hscale & 0x00FF);
362 ret = i2c_smbus_write_byte_data(client, VSCALE_LO,
363 scale->vscale & 0x00FF);
368 static int tw9910_set_hsync(struct i2c_client *client)
370 struct tw9910_priv *priv = to_tw9910(client);
374 ret = i2c_smbus_write_byte_data(client, HSBEGIN,
375 (HSYNC_START & 0x07F8) >> 3);
380 ret = i2c_smbus_write_byte_data(client, HSEND,
381 (HSYNC_END & 0x07F8) >> 3);
385 /* So far only revisions 0 and 1 have been seen */
387 if (1 == priv->revision)
388 ret = tw9910_mask_set(client, HSLOWCTL, 0x77,
389 (HSYNC_START & 0x0007) << 4 |
390 (HSYNC_END & 0x0007));
395 static void tw9910_reset(struct i2c_client *client)
397 tw9910_mask_set(client, ACNTL1, SRESET, SRESET);
401 static int tw9910_power(struct i2c_client *client, int enable)
411 acntl1 = CLK_PDN | Y_PDN | C_PDN;
415 ret = tw9910_mask_set(client, ACNTL1, ACNTL1_PDN_MASK, acntl1);
419 return tw9910_mask_set(client, ACNTL2, ACNTL2_PDN_MASK, acntl2);
422 static const struct tw9910_scale_ctrl *tw9910_select_norm(struct soc_camera_device *icd,
423 u32 width, u32 height)
425 const struct tw9910_scale_ctrl *scale;
426 const struct tw9910_scale_ctrl *ret = NULL;
427 v4l2_std_id norm = icd->vdev->current_norm;
428 __u32 diff = 0xffffffff, tmp;
431 if (norm & V4L2_STD_NTSC) {
432 scale = tw9910_ntsc_scales;
433 size = ARRAY_SIZE(tw9910_ntsc_scales);
434 } else if (norm & V4L2_STD_PAL) {
435 scale = tw9910_pal_scales;
436 size = ARRAY_SIZE(tw9910_pal_scales);
441 for (i = 0; i < size; i++) {
442 tmp = abs(width - scale[i].width) +
443 abs(height - scale[i].height);
454 * soc_camera_ops function
456 static int tw9910_s_stream(struct v4l2_subdev *sd, int enable)
458 struct i2c_client *client = v4l2_get_subdevdata(sd);
459 struct tw9910_priv *priv = to_tw9910(client);
464 switch (priv->revision) {
466 val = OEN_TRI_SEL_ALL_OFF_r0;
469 val = OEN_TRI_SEL_ALL_OFF_r1;
472 dev_err(&client->dev, "un-supported revision\n");
476 val = OEN_TRI_SEL_ALL_ON;
479 dev_err(&client->dev, "norm select error\n");
483 dev_dbg(&client->dev, "%s %dx%d\n",
486 priv->scale->height);
489 ret = tw9910_mask_set(client, OPFORM, OEN_TRI_SEL_MASK, val);
493 return tw9910_power(client, enable);
496 static int tw9910_set_bus_param(struct soc_camera_device *icd,
499 struct soc_camera_link *icl = to_soc_camera_link(icd);
500 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
501 struct i2c_client *client = v4l2_get_subdevdata(sd);
502 u8 val = VSSL_VVALID | HSSL_DVALID;
504 flags = soc_camera_apply_sensor_flags(icl, flags);
509 * We use VVALID and DVALID signals to control VSYNC and HSYNC
510 * outputs, in this mode their polarity is inverted.
512 if (flags & SOCAM_HSYNC_ACTIVE_LOW)
515 if (flags & SOCAM_VSYNC_ACTIVE_LOW)
518 return i2c_smbus_write_byte_data(client, OUTCTR1, val);
521 static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
523 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
524 struct tw9910_priv *priv = to_tw9910(client);
525 struct soc_camera_link *icl = to_soc_camera_link(icd);
526 unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
527 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
528 SOCAM_VSYNC_ACTIVE_LOW | SOCAM_HSYNC_ACTIVE_LOW |
529 SOCAM_DATA_ACTIVE_HIGH | priv->info->buswidth;
531 return soc_camera_apply_sensor_flags(icl, flags);
534 static int tw9910_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
538 if (norm & (V4L2_STD_NTSC | V4L2_STD_PAL))
544 static int tw9910_g_chip_ident(struct v4l2_subdev *sd,
545 struct v4l2_dbg_chip_ident *id)
547 struct i2c_client *client = v4l2_get_subdevdata(sd);
548 struct tw9910_priv *priv = to_tw9910(client);
550 id->ident = V4L2_IDENT_TW9910;
551 id->revision = priv->revision;
556 #ifdef CONFIG_VIDEO_ADV_DEBUG
557 static int tw9910_g_register(struct v4l2_subdev *sd,
558 struct v4l2_dbg_register *reg)
560 struct i2c_client *client = v4l2_get_subdevdata(sd);
566 ret = i2c_smbus_read_byte_data(client, reg->reg);
574 reg->val = (__u64)ret;
579 static int tw9910_s_register(struct v4l2_subdev *sd,
580 struct v4l2_dbg_register *reg)
582 struct i2c_client *client = v4l2_get_subdevdata(sd);
584 if (reg->reg > 0xff ||
588 return i2c_smbus_write_byte_data(client, reg->reg, reg->val);
592 static int tw9910_set_frame(struct v4l2_subdev *sd, u32 *width, u32 *height)
594 struct i2c_client *client = v4l2_get_subdevdata(sd);
595 struct tw9910_priv *priv = to_tw9910(client);
596 struct soc_camera_device *icd = client->dev.platform_data;
601 * select suitable norm
603 priv->scale = tw9910_select_norm(icd, *width, *height);
605 goto tw9910_set_fmt_error;
610 tw9910_reset(client);
616 if (SOCAM_DATAWIDTH_16 == priv->info->buswidth)
619 ret = tw9910_mask_set(client, OPFORM, LEN, val);
621 goto tw9910_set_fmt_error;
624 * select MPOUT behavior
626 switch (priv->info->mpout) {
627 case TW9910_MPO_VLOSS:
628 val = RTSEL_VLOSS; break;
629 case TW9910_MPO_HLOCK:
630 val = RTSEL_HLOCK; break;
631 case TW9910_MPO_SLOCK:
632 val = RTSEL_SLOCK; break;
633 case TW9910_MPO_VLOCK:
634 val = RTSEL_VLOCK; break;
635 case TW9910_MPO_MONO:
636 val = RTSEL_MONO; break;
637 case TW9910_MPO_DET50:
638 val = RTSEL_DET50; break;
639 case TW9910_MPO_FIELD:
640 val = RTSEL_FIELD; break;
641 case TW9910_MPO_RTCO:
642 val = RTSEL_RTCO; break;
647 ret = tw9910_mask_set(client, VBICNTL, RTSEL_MASK, val);
649 goto tw9910_set_fmt_error;
654 ret = tw9910_set_scale(client, priv->scale);
656 goto tw9910_set_fmt_error;
661 ret = tw9910_set_hsync(client);
663 goto tw9910_set_fmt_error;
665 *width = priv->scale->width;
666 *height = priv->scale->height;
670 tw9910_set_fmt_error:
672 tw9910_reset(client);
678 static int tw9910_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
680 struct i2c_client *client = v4l2_get_subdevdata(sd);
681 struct soc_camera_device *icd = client->dev.platform_data;
685 if (icd->vdev->current_norm & V4L2_STD_NTSC) {
692 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
697 static int tw9910_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
699 struct i2c_client *client = v4l2_get_subdevdata(sd);
700 struct soc_camera_device *icd = client->dev.platform_data;
704 if (icd->vdev->current_norm & V4L2_STD_NTSC) {
705 a->bounds.width = 640;
706 a->bounds.height = 480;
708 a->bounds.width = 768;
709 a->bounds.height = 576;
711 a->defrect = a->bounds;
712 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
713 a->pixelaspect.numerator = 1;
714 a->pixelaspect.denominator = 1;
719 static int tw9910_g_fmt(struct v4l2_subdev *sd,
720 struct v4l2_mbus_framefmt *mf)
722 struct i2c_client *client = v4l2_get_subdevdata(sd);
723 struct tw9910_priv *priv = to_tw9910(client);
727 u32 width = 640, height = 480;
728 ret = tw9910_set_frame(sd, &width, &height);
733 mf->width = priv->scale->width;
734 mf->height = priv->scale->height;
735 mf->code = V4L2_MBUS_FMT_UYVY8_2X8;
736 mf->colorspace = V4L2_COLORSPACE_JPEG;
737 mf->field = V4L2_FIELD_INTERLACED_BT;
742 static int tw9910_s_fmt(struct v4l2_subdev *sd,
743 struct v4l2_mbus_framefmt *mf)
745 u32 width = mf->width, height = mf->height;
748 WARN_ON(mf->field != V4L2_FIELD_ANY &&
749 mf->field != V4L2_FIELD_INTERLACED_BT);
754 if (mf->code != V4L2_MBUS_FMT_UYVY8_2X8)
757 mf->colorspace = V4L2_COLORSPACE_JPEG;
759 ret = tw9910_set_frame(sd, &width, &height);
767 static int tw9910_try_fmt(struct v4l2_subdev *sd,
768 struct v4l2_mbus_framefmt *mf)
770 struct i2c_client *client = v4l2_get_subdevdata(sd);
771 struct soc_camera_device *icd = client->dev.platform_data;
772 const struct tw9910_scale_ctrl *scale;
774 if (V4L2_FIELD_ANY == mf->field) {
775 mf->field = V4L2_FIELD_INTERLACED_BT;
776 } else if (V4L2_FIELD_INTERLACED_BT != mf->field) {
777 dev_err(&client->dev, "Field type %d invalid.\n", mf->field);
781 mf->code = V4L2_MBUS_FMT_UYVY8_2X8;
782 mf->colorspace = V4L2_COLORSPACE_JPEG;
785 * select suitable norm
787 scale = tw9910_select_norm(icd, mf->width, mf->height);
791 mf->width = scale->width;
792 mf->height = scale->height;
797 static int tw9910_video_probe(struct soc_camera_device *icd,
798 struct i2c_client *client)
800 struct tw9910_priv *priv = to_tw9910(client);
803 /* We must have a parent by now. And it cannot be a wrong one. */
804 BUG_ON(!icd->parent ||
805 to_soc_camera_host(icd->parent)->nr != icd->iface);
808 * tw9910 only use 8 or 16 bit bus width
810 if (SOCAM_DATAWIDTH_16 != priv->info->buswidth &&
811 SOCAM_DATAWIDTH_8 != priv->info->buswidth) {
812 dev_err(&client->dev, "bus width error\n");
817 * check and show Product ID
818 * So far only revisions 0 and 1 have been seen
820 id = i2c_smbus_read_byte_data(client, ID);
821 priv->revision = GET_REV(id);
825 0x01 < priv->revision) {
826 dev_err(&client->dev,
827 "Product ID error %x:%x\n",
832 dev_info(&client->dev,
833 "tw9910 Product ID %0x:%0x\n", id, priv->revision);
835 icd->vdev->tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL;
836 icd->vdev->current_norm = V4L2_STD_NTSC;
841 static struct soc_camera_ops tw9910_ops = {
842 .set_bus_param = tw9910_set_bus_param,
843 .query_bus_param = tw9910_query_bus_param,
846 static struct v4l2_subdev_core_ops tw9910_subdev_core_ops = {
847 .g_chip_ident = tw9910_g_chip_ident,
848 .s_std = tw9910_s_std,
849 #ifdef CONFIG_VIDEO_ADV_DEBUG
850 .g_register = tw9910_g_register,
851 .s_register = tw9910_s_register,
855 static int tw9910_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
856 enum v4l2_mbus_pixelcode *code)
861 *code = V4L2_MBUS_FMT_UYVY8_2X8;
865 static struct v4l2_subdev_video_ops tw9910_subdev_video_ops = {
866 .s_stream = tw9910_s_stream,
867 .g_mbus_fmt = tw9910_g_fmt,
868 .s_mbus_fmt = tw9910_s_fmt,
869 .try_mbus_fmt = tw9910_try_fmt,
870 .cropcap = tw9910_cropcap,
871 .g_crop = tw9910_g_crop,
872 .enum_mbus_fmt = tw9910_enum_fmt,
875 static struct v4l2_subdev_ops tw9910_subdev_ops = {
876 .core = &tw9910_subdev_core_ops,
877 .video = &tw9910_subdev_video_ops,
881 * i2c_driver function
884 static int tw9910_probe(struct i2c_client *client,
885 const struct i2c_device_id *did)
888 struct tw9910_priv *priv;
889 struct tw9910_video_info *info;
890 struct soc_camera_device *icd = client->dev.platform_data;
891 struct i2c_adapter *adapter =
892 to_i2c_adapter(client->dev.parent);
893 struct soc_camera_link *icl;
897 dev_err(&client->dev, "TW9910: missing soc-camera data!\n");
901 icl = to_soc_camera_link(icd);
902 if (!icl || !icl->priv)
907 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
908 dev_err(&client->dev,
909 "I2C-Adapter doesn't support "
910 "I2C_FUNC_SMBUS_BYTE_DATA\n");
914 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
920 v4l2_i2c_subdev_init(&priv->subdev, client, &tw9910_subdev_ops);
922 icd->ops = &tw9910_ops;
923 icd->iface = icl->bus_id;
925 ret = tw9910_video_probe(icd, client);
934 static int tw9910_remove(struct i2c_client *client)
936 struct tw9910_priv *priv = to_tw9910(client);
937 struct soc_camera_device *icd = client->dev.platform_data;
944 static const struct i2c_device_id tw9910_id[] = {
948 MODULE_DEVICE_TABLE(i2c, tw9910_id);
950 static struct i2c_driver tw9910_i2c_driver = {
954 .probe = tw9910_probe,
955 .remove = tw9910_remove,
956 .id_table = tw9910_id,
962 static int __init tw9910_module_init(void)
964 return i2c_add_driver(&tw9910_i2c_driver);
967 static void __exit tw9910_module_exit(void)
969 i2c_del_driver(&tw9910_i2c_driver);
972 module_init(tw9910_module_init);
973 module_exit(tw9910_module_exit);
975 MODULE_DESCRIPTION("SoC Camera driver for tw9910");
976 MODULE_AUTHOR("Kuninori Morimoto");
977 MODULE_LICENSE("GPL v2");