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alistair23-linux/drivers/media/video/tw9910.c
Hans Verkuil aecde8b53b V4L/DVB (10141): v4l2: debugging API changed to match against driver name instead of ID. 
Since the i2c driver ID will be removed in the near future we have to
modify the v4l2 debugging API to use the driver name instead of driver ID.

Note that this API is not used in applications other than v4l2-dbg.cpp
as it is for debugging and testing only.

Should anyone use the old VIDIOC_G_CHIP_IDENT, then this will be logged
with a warning that it is deprecated and will be removed in 2.6.30.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-02 17:11:52 -02:00

952 lines
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/*
* 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/videodev2.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-common.h>
#include <media/soc_camera.h>
#include <media/tw9910.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 HSGEGIN 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 0x04 /* Output Enable together with TRI_SEL. */
/* 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.
*/
/* 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 ) */
/*
* 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_cropping_ctrl {
u16 vdelay;
u16 vactive;
u16 hdelay;
u16 hactive;
};
struct tw9910_hsync_ctrl {
u16 start;
u16 end;
};
struct tw9910_priv {
struct tw9910_video_info *info;
struct i2c_client *client;
struct soc_camera_device icd;
const struct tw9910_scale_ctrl *scale;
};
/*
* register settings
*/
#define ENDMARKER { 0xff, 0xff }
static const struct regval_list tw9910_default_regs[] =
{
{ OPFORM, 0x00 },
{ OUTCTR1, VSP_LO | VSSL_VVALID | HSP_HI | HSSL_HSYNC },
ENDMARKER,
};
static const struct soc_camera_data_format tw9910_color_fmt[] = {
{
.name = "VYUY",
.fourcc = V4L2_PIX_FMT_VYUY,
.depth = 16,
.colorspace = V4L2_COLORSPACE_SMPTE170M,
}
};
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,
},
};
static const struct tw9910_cropping_ctrl tw9910_cropping_ctrl = {
.vdelay = 0x0012,
.vactive = 0x00F0,
.hdelay = 0x0010,
.hactive = 0x02D0,
};
static const struct tw9910_hsync_ctrl tw9910_hsync_ctrl = {
.start = 0x0260,
.end = 0x0300,
};
/*
* general function
*/
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_cropping(struct i2c_client *client,
const struct tw9910_cropping_ctrl *cropping)
{
int ret;
ret = i2c_smbus_write_byte_data(client, CROP_HI,
(cropping->vdelay & 0x0300) >> 2 |
(cropping->vactive & 0x0300) >> 4 |
(cropping->hdelay & 0x0300) >> 6 |
(cropping->hactive & 0x0300) >> 8);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(client, VDELAY_LO,
cropping->vdelay & 0x00FF);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(client, VACTIVE_LO,
cropping->vactive & 0x00FF);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(client, HDELAY_LO,
cropping->hdelay & 0x00FF);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(client, HACTIVE_LO,
cropping->hactive & 0x00FF);
return ret;
}
static int tw9910_set_hsync(struct i2c_client *client,
const struct tw9910_hsync_ctrl *hsync)
{
int ret;
/* bit 10 - 3 */
ret = i2c_smbus_write_byte_data(client, HSGEGIN,
(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;
/* bit 2 - 0 */
ret = i2c_smbus_read_byte_data(client, HSLOWCTL);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(client, HSLOWCTL,
(ret & 0x88) |
(hsync->start & 0x0007) << 4 |
(hsync->end & 0x0007));
return ret;
}
static int tw9910_write_array(struct i2c_client *client,
const struct regval_list *vals)
{
while (vals->reg_num != 0xff) {
int ret = i2c_smbus_write_byte_data(client,
vals->reg_num,
vals->value);
if (ret < 0)
return ret;
vals++;
}
return 0;
}
static int tw9910_mask_set(struct i2c_client *client, u8 command,
u8 mask, u8 set)
{
s32 val = i2c_smbus_read_byte_data(client, command);
val &= ~mask;
val |= set;
return i2c_smbus_write_byte_data(client, command, val);
}
static void tw9910_reset(struct i2c_client *client)
{
i2c_smbus_write_byte_data(client, ACNTL1, SRESET);
msleep(1);
}
static const struct tw9910_scale_ctrl*
tw9910_select_norm(struct soc_camera_device *icd, u32 width, u32 height)
{
const struct tw9910_scale_ctrl *scale;
const struct tw9910_scale_ctrl *ret = NULL;
v4l2_std_id norm = icd->vdev->current_norm;
__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;
}
/*
* soc_camera_ops function
*/
static int tw9910_init(struct soc_camera_device *icd)
{
struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
int ret = 0;
if (priv->info->link.power) {
ret = priv->info->link.power(&priv->client->dev, 1);
if (ret < 0)
return ret;
}
if (priv->info->link.reset)
ret = priv->info->link.reset(&priv->client->dev);
return ret;
}
static int tw9910_release(struct soc_camera_device *icd)
{
struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
int ret = 0;
if (priv->info->link.power)
ret = priv->info->link.power(&priv->client->dev, 0);
return ret;
}
static int tw9910_start_capture(struct soc_camera_device *icd)
{
struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
if (!priv->scale) {
dev_err(&icd->dev, "norm select error\n");
return -EPERM;
}
dev_dbg(&icd->dev, "%s %dx%d\n",
priv->scale->name,
priv->scale->width,
priv->scale->height);
return 0;
}
static int tw9910_stop_capture(struct soc_camera_device *icd)
{
return 0;
}
static int tw9910_set_bus_param(struct soc_camera_device *icd,
unsigned long flags)
{
return 0;
}
static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
{
struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
struct soc_camera_link *icl = priv->client->dev.platform_data;
unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
SOCAM_DATA_ACTIVE_HIGH | priv->info->buswidth;
return soc_camera_apply_sensor_flags(icl, flags);
}
static int tw9910_get_chip_id(struct soc_camera_device *icd,
struct v4l2_dbg_chip_ident *id)
{
id->ident = V4L2_IDENT_TW9910;
id->revision = 0;
return 0;
}
static int tw9910_set_std(struct soc_camera_device *icd,
v4l2_std_id *a)
{
int ret = -EINVAL;
if (*a & (V4L2_STD_NTSC | V4L2_STD_PAL))
ret = 0;
return ret;
}
static int tw9910_enum_input(struct soc_camera_device *icd,
struct v4l2_input *inp)
{
inp->type = V4L2_INPUT_TYPE_TUNER;
inp->std = V4L2_STD_UNKNOWN;
strcpy(inp->name, "Video");
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int tw9910_get_register(struct soc_camera_device *icd,
struct v4l2_dbg_register *reg)
{
struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
int ret;
if (reg->reg > 0xff)
return -EINVAL;
ret = i2c_smbus_read_byte_data(priv->client, reg->reg);
if (ret < 0)
return ret;
/* ret = int
* reg->val = __u64
*/
reg->val = (__u64)ret;
return 0;
}
static int tw9910_set_register(struct soc_camera_device *icd,
struct v4l2_dbg_register *reg)
{
struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
if (reg->reg > 0xff ||
reg->val > 0xff)
return -EINVAL;
return i2c_smbus_write_byte_data(priv->client, reg->reg, reg->val);
}
#endif
static int tw9910_set_fmt(struct soc_camera_device *icd, __u32 pixfmt,
struct v4l2_rect *rect)
{
struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
int ret = -EINVAL;
u8 val;
/*
* select suitable norm
*/
priv->scale = tw9910_select_norm(icd, rect->width, rect->height);
if (!priv->scale)
goto tw9910_set_fmt_error;
/*
* reset hardware
*/
tw9910_reset(priv->client);
ret = tw9910_write_array(priv->client, tw9910_default_regs);
if (ret < 0)
goto tw9910_set_fmt_error;
/*
* set bus width
*/
val = 0x00;
if (SOCAM_DATAWIDTH_16 == priv->info->buswidth)
val = LEN;
ret = tw9910_mask_set(priv->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(priv->client, VBICNTL, RTSEL_MASK, val);
if (ret < 0)
goto tw9910_set_fmt_error;
/*
* set scale
*/
ret = tw9910_set_scale(priv->client, priv->scale);
if (ret < 0)
goto tw9910_set_fmt_error;
/*
* set cropping
*/
ret = tw9910_set_cropping(priv->client, &tw9910_cropping_ctrl);
if (ret < 0)
goto tw9910_set_fmt_error;
/*
* set hsync
*/
ret = tw9910_set_hsync(priv->client, &tw9910_hsync_ctrl);
if (ret < 0)
goto tw9910_set_fmt_error;
return ret;
tw9910_set_fmt_error:
tw9910_reset(priv->client);
priv->scale = NULL;
return ret;
}
static int tw9910_try_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
{
struct v4l2_pix_format *pix = &f->fmt.pix;
const struct tw9910_scale_ctrl *scale;
if (V4L2_FIELD_ANY == pix->field) {
pix->field = V4L2_FIELD_INTERLACED;
} else if (V4L2_FIELD_INTERLACED != pix->field) {
dev_err(&icd->dev, "Field type invalid.\n");
return -EINVAL;
}
/*
* select suitable norm
*/
scale = tw9910_select_norm(icd, pix->width, pix->height);
if (!scale)
return -EINVAL;
pix->width = scale->width;
pix->height = scale->height;
return 0;
}
static int tw9910_video_probe(struct soc_camera_device *icd)
{
struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
s32 val;
int ret;
/*
* We must have a parent by now. And it cannot be a wrong one.
* So this entire test is completely redundant.
*/
if (!icd->dev.parent ||
to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
return -ENODEV;
/*
* tw9910 only use 8 or 16 bit bus width
*/
if (SOCAM_DATAWIDTH_16 != priv->info->buswidth &&
SOCAM_DATAWIDTH_8 != priv->info->buswidth) {
dev_err(&icd->dev, "bus width error\n");
return -ENODEV;
}
icd->formats = tw9910_color_fmt;
icd->num_formats = ARRAY_SIZE(tw9910_color_fmt);
/*
* check and show Product ID
*/
val = i2c_smbus_read_byte_data(priv->client, ID);
if (0x0B != GET_ID(val) ||
0x00 != GET_ReV(val)) {
dev_err(&icd->dev,
"Product ID error %x:%x\n", GET_ID(val), GET_ReV(val));
return -ENODEV;
}
dev_info(&icd->dev,
"tw9910 Product ID %0x:%0x\n", GET_ID(val), GET_ReV(val));
ret = soc_camera_video_start(icd);
if (ret < 0)
return ret;
icd->vdev->tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL;
icd->vdev->current_norm = V4L2_STD_NTSC;
return ret;
}
static void tw9910_video_remove(struct soc_camera_device *icd)
{
soc_camera_video_stop(icd);
}
static struct soc_camera_ops tw9910_ops = {
.owner = THIS_MODULE,
.probe = tw9910_video_probe,
.remove = tw9910_video_remove,
.init = tw9910_init,
.release = tw9910_release,
.start_capture = tw9910_start_capture,
.stop_capture = tw9910_stop_capture,
.set_fmt = tw9910_set_fmt,
.try_fmt = tw9910_try_fmt,
.set_bus_param = tw9910_set_bus_param,
.query_bus_param = tw9910_query_bus_param,
.get_chip_id = tw9910_get_chip_id,
.set_std = tw9910_set_std,
.enum_input = tw9910_enum_input,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.get_register = tw9910_get_register,
.set_register = tw9910_set_register,
#endif
};
/*
* 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 soc_camera_device *icd;
const struct tw9910_scale_ctrl *scale;
int i, ret;
info = client->dev.platform_data;
if (!info)
return -EINVAL;
if (!i2c_check_functionality(to_i2c_adapter(client->dev.parent),
I2C_FUNC_SMBUS_BYTE_DATA)) {
dev_err(&client->dev,
"I2C-Adapter doesn't support "
"I2C_FUNC_SMBUS_BYTE_DATA\n");
return -EIO;
}
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->info = info;
priv->client = client;
i2c_set_clientdata(client, priv);
icd = &priv->icd;
icd->ops = &tw9910_ops;
icd->control = &client->dev;
icd->iface = info->link.bus_id;
/*
* set width and height
*/
icd->width_max = tw9910_ntsc_scales[0].width; /* set default */
icd->width_min = tw9910_ntsc_scales[0].width;
icd->height_max = tw9910_ntsc_scales[0].height;
icd->height_min = tw9910_ntsc_scales[0].height;
scale = tw9910_ntsc_scales;
for (i = 0; i < ARRAY_SIZE(tw9910_ntsc_scales); i++) {
icd->width_max = max(scale[i].width, icd->width_max);
icd->width_min = min(scale[i].width, icd->width_min);
icd->height_max = max(scale[i].height, icd->height_max);
icd->height_min = min(scale[i].height, icd->height_min);
}
scale = tw9910_pal_scales;
for (i = 0; i < ARRAY_SIZE(tw9910_pal_scales); i++) {
icd->width_max = max(scale[i].width, icd->width_max);
icd->width_min = min(scale[i].width, icd->width_min);
icd->height_max = max(scale[i].height, icd->height_max);
icd->height_min = min(scale[i].height, icd->height_min);
}
ret = soc_camera_device_register(icd);
if (ret) {
i2c_set_clientdata(client, NULL);
kfree(priv);
}
return ret;
}
static int tw9910_remove(struct i2c_client *client)
{
struct tw9910_priv *priv = i2c_get_clientdata(client);
soc_camera_device_unregister(&priv->icd);
i2c_set_clientdata(client, NULL);
kfree(priv);
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 function
*/
static int __init tw9910_module_init(void)
{
return i2c_add_driver(&tw9910_i2c_driver);
}
static void __exit tw9910_module_exit(void)
{
i2c_del_driver(&tw9910_i2c_driver);
}
module_init(tw9910_module_init);
module_exit(tw9910_module_exit);
MODULE_DESCRIPTION("SoC Camera driver for tw9910");
MODULE_AUTHOR("Kuninori Morimoto");
MODULE_LICENSE("GPL v2");
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