diff options
author | Hans Verkuil <hverkuil@xs4all.nl> | 2009-03-18 19:01:06 +0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 19:43:30 +0400 |
commit | 14386c2b7793652a656021a3345cff3b0f6771f9 (patch) | |
tree | 86c85efca5742e5b2e23484c2bcb915ce9019e31 /drivers/media/video/ov7670.c | |
parent | 2da9479aaa331bdfaadab0d14f75fd76bfa5e56a (diff) | |
download | linux-14386c2b7793652a656021a3345cff3b0f6771f9.tar.xz |
V4L/DVB (11113): ov7670: convert to v4l2_subdev
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/ov7670.c')
-rw-r--r-- | drivers/media/video/ov7670.c | 376 |
1 files changed, 180 insertions, 196 deletions
diff --git a/drivers/media/video/ov7670.c b/drivers/media/video/ov7670.c index 003120c07482..78bd430716c8 100644 --- a/drivers/media/video/ov7670.c +++ b/drivers/media/video/ov7670.c @@ -12,18 +12,22 @@ */ #include <linux/init.h> #include <linux/module.h> -#include <linux/slab.h> +#include <linux/i2c.h> #include <linux/delay.h> #include <linux/videodev2.h> -#include <media/v4l2-common.h> +#include <media/v4l2-device.h> #include <media/v4l2-chip-ident.h> -#include <linux/i2c.h> +#include <media/v4l2-i2c-drv-legacy.h> MODULE_AUTHOR("Jonathan Corbet <corbet@lwn.net>"); MODULE_DESCRIPTION("A low-level driver for OmniVision ov7670 sensors"); MODULE_LICENSE("GPL"); +static int debug; +module_param(debug, bool, 0644); +MODULE_PARM_DESC(debug, "Debug level (0-1)"); + /* * Basic window sizes. These probably belong somewhere more globally * useful. @@ -189,11 +193,16 @@ MODULE_LICENSE("GPL"); */ struct ov7670_format_struct; /* coming later */ struct ov7670_info { + struct v4l2_subdev sd; struct ov7670_format_struct *fmt; /* Current format */ unsigned char sat; /* Saturation value */ int hue; /* Hue value */ }; +static inline struct ov7670_info *to_state(struct v4l2_subdev *sd) +{ + return container_of(sd, struct ov7670_info, sd); +} @@ -400,24 +409,27 @@ static struct regval_list ov7670_fmt_raw[] = { * Low-level register I/O. */ -static int ov7670_read(struct i2c_client *c, unsigned char reg, +static int ov7670_read(struct v4l2_subdev *sd, unsigned char reg, unsigned char *value) { + struct i2c_client *client = v4l2_get_subdevdata(sd); int ret; - ret = i2c_smbus_read_byte_data(c, reg); + ret = i2c_smbus_read_byte_data(client, reg); if (ret >= 0) { - *value = (unsigned char) ret; + *value = (unsigned char)ret; ret = 0; } return ret; } -static int ov7670_write(struct i2c_client *c, unsigned char reg, +static int ov7670_write(struct v4l2_subdev *sd, unsigned char reg, unsigned char value) { - int ret = i2c_smbus_write_byte_data(c, reg, value); + struct i2c_client *client = v4l2_get_subdevdata(sd); + int ret = i2c_smbus_write_byte_data(client, reg, value); + if (reg == REG_COM7 && (value & COM7_RESET)) msleep(2); /* Wait for reset to run */ return ret; @@ -427,10 +439,10 @@ static int ov7670_write(struct i2c_client *c, unsigned char reg, /* * Write a list of register settings; ff/ff stops the process. */ -static int ov7670_write_array(struct i2c_client *c, struct regval_list *vals) +static int ov7670_write_array(struct v4l2_subdev *sd, struct regval_list *vals) { while (vals->reg_num != 0xff || vals->value != 0xff) { - int ret = ov7670_write(c, vals->reg_num, vals->value); + int ret = ov7670_write(sd, vals->reg_num, vals->value); if (ret < 0) return ret; vals++; @@ -442,34 +454,35 @@ static int ov7670_write_array(struct i2c_client *c, struct regval_list *vals) /* * Stuff that knows about the sensor. */ -static void ov7670_reset(struct i2c_client *client) +static int ov7670_reset(struct v4l2_subdev *sd, u32 val) { - ov7670_write(client, REG_COM7, COM7_RESET); + ov7670_write(sd, REG_COM7, COM7_RESET); msleep(1); + return 0; } -static int ov7670_init(struct i2c_client *client) +static int ov7670_init(struct v4l2_subdev *sd, u32 val) { - return ov7670_write_array(client, ov7670_default_regs); + return ov7670_write_array(sd, ov7670_default_regs); } -static int ov7670_detect(struct i2c_client *client) +static int ov7670_detect(struct v4l2_subdev *sd) { unsigned char v; int ret; - ret = ov7670_init(client); + ret = ov7670_init(sd, 0); if (ret < 0) return ret; - ret = ov7670_read(client, REG_MIDH, &v); + ret = ov7670_read(sd, REG_MIDH, &v); if (ret < 0) return ret; if (v != 0x7f) /* OV manuf. id. */ return -ENODEV; - ret = ov7670_read(client, REG_MIDL, &v); + ret = ov7670_read(sd, REG_MIDL, &v); if (ret < 0) return ret; if (v != 0xa2) @@ -477,12 +490,12 @@ static int ov7670_detect(struct i2c_client *client) /* * OK, we know we have an OmniVision chip...but which one? */ - ret = ov7670_read(client, REG_PID, &v); + ret = ov7670_read(sd, REG_PID, &v); if (ret < 0) return ret; if (v != 0x76) /* PID + VER = 0x76 / 0x73 */ return -ENODEV; - ret = ov7670_read(client, REG_VER, &v); + ret = ov7670_read(sd, REG_VER, &v); if (ret < 0) return ret; if (v != 0x73) /* PID + VER = 0x76 / 0x73 */ @@ -627,7 +640,7 @@ static struct ov7670_win_size { /* * Store a set of start/stop values into the camera. */ -static int ov7670_set_hw(struct i2c_client *client, int hstart, int hstop, +static int ov7670_set_hw(struct v4l2_subdev *sd, int hstart, int hstop, int vstart, int vstop) { int ret; @@ -637,26 +650,26 @@ static int ov7670_set_hw(struct i2c_client *client, int hstart, int hstop, * hstart are in href[2:0], bottom 3 of hstop in href[5:3]. There is * a mystery "edge offset" value in the top two bits of href. */ - ret = ov7670_write(client, REG_HSTART, (hstart >> 3) & 0xff); - ret += ov7670_write(client, REG_HSTOP, (hstop >> 3) & 0xff); - ret += ov7670_read(client, REG_HREF, &v); + ret = ov7670_write(sd, REG_HSTART, (hstart >> 3) & 0xff); + ret += ov7670_write(sd, REG_HSTOP, (hstop >> 3) & 0xff); + ret += ov7670_read(sd, REG_HREF, &v); v = (v & 0xc0) | ((hstop & 0x7) << 3) | (hstart & 0x7); msleep(10); - ret += ov7670_write(client, REG_HREF, v); + ret += ov7670_write(sd, REG_HREF, v); /* * Vertical: similar arrangement, but only 10 bits. */ - ret += ov7670_write(client, REG_VSTART, (vstart >> 2) & 0xff); - ret += ov7670_write(client, REG_VSTOP, (vstop >> 2) & 0xff); - ret += ov7670_read(client, REG_VREF, &v); + ret += ov7670_write(sd, REG_VSTART, (vstart >> 2) & 0xff); + ret += ov7670_write(sd, REG_VSTOP, (vstop >> 2) & 0xff); + ret += ov7670_read(sd, REG_VREF, &v); v = (v & 0xf0) | ((vstop & 0x3) << 2) | (vstart & 0x3); msleep(10); - ret += ov7670_write(client, REG_VREF, v); + ret += ov7670_write(sd, REG_VREF, v); return ret; } -static int ov7670_enum_fmt(struct i2c_client *c, struct v4l2_fmtdesc *fmt) +static int ov7670_enum_fmt(struct v4l2_subdev *sd, struct v4l2_fmtdesc *fmt) { struct ov7670_format_struct *ofmt; @@ -671,7 +684,8 @@ static int ov7670_enum_fmt(struct i2c_client *c, struct v4l2_fmtdesc *fmt) } -static int ov7670_try_fmt(struct i2c_client *c, struct v4l2_format *fmt, +static int ov7670_try_fmt_internal(struct v4l2_subdev *sd, + struct v4l2_format *fmt, struct ov7670_format_struct **ret_fmt, struct ov7670_win_size **ret_wsize) { @@ -715,18 +729,23 @@ static int ov7670_try_fmt(struct i2c_client *c, struct v4l2_format *fmt, return 0; } +static int ov7670_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt) +{ + return ov7670_try_fmt_internal(sd, fmt, NULL, NULL); +} + /* * Set a format. */ -static int ov7670_s_fmt(struct i2c_client *c, struct v4l2_format *fmt) +static int ov7670_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt) { int ret; struct ov7670_format_struct *ovfmt; struct ov7670_win_size *wsize; - struct ov7670_info *info = i2c_get_clientdata(c); - unsigned char com7, clkrc; + struct ov7670_info *info = to_state(sd); + unsigned char com7, clkrc = 0; - ret = ov7670_try_fmt(c, fmt, &ovfmt, &wsize); + ret = ov7670_try_fmt_internal(sd, fmt, &ovfmt, &wsize); if (ret) return ret; /* @@ -735,7 +754,7 @@ static int ov7670_s_fmt(struct i2c_client *c, struct v4l2_format *fmt) * the colors. */ if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB565) { - ret = ov7670_read(c, REG_CLKRC, &clkrc); + ret = ov7670_read(sd, REG_CLKRC, &clkrc); if (ret) return ret; } @@ -747,20 +766,20 @@ static int ov7670_s_fmt(struct i2c_client *c, struct v4l2_format *fmt) */ com7 = ovfmt->regs[0].value; com7 |= wsize->com7_bit; - ov7670_write(c, REG_COM7, com7); + ov7670_write(sd, REG_COM7, com7); /* * Now write the rest of the array. Also store start/stops */ - ov7670_write_array(c, ovfmt->regs + 1); - ov7670_set_hw(c, wsize->hstart, wsize->hstop, wsize->vstart, + ov7670_write_array(sd, ovfmt->regs + 1); + ov7670_set_hw(sd, wsize->hstart, wsize->hstop, wsize->vstart, wsize->vstop); ret = 0; if (wsize->regs) - ret = ov7670_write_array(c, wsize->regs); + ret = ov7670_write_array(sd, wsize->regs); info->fmt = ovfmt; if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB565 && ret == 0) - ret = ov7670_write(c, REG_CLKRC, clkrc); + ret = ov7670_write(sd, REG_CLKRC, clkrc); return ret; } @@ -768,7 +787,7 @@ static int ov7670_s_fmt(struct i2c_client *c, struct v4l2_format *fmt) * Implement G/S_PARM. There is a "high quality" mode we could try * to do someday; for now, we just do the frame rate tweak. */ -static int ov7670_g_parm(struct i2c_client *c, struct v4l2_streamparm *parms) +static int ov7670_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms) { struct v4l2_captureparm *cp = &parms->parm.capture; unsigned char clkrc; @@ -776,7 +795,7 @@ static int ov7670_g_parm(struct i2c_client *c, struct v4l2_streamparm *parms) if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; - ret = ov7670_read(c, REG_CLKRC, &clkrc); + ret = ov7670_read(sd, REG_CLKRC, &clkrc); if (ret < 0) return ret; memset(cp, 0, sizeof(struct v4l2_captureparm)); @@ -788,7 +807,7 @@ static int ov7670_g_parm(struct i2c_client *c, struct v4l2_streamparm *parms) return 0; } -static int ov7670_s_parm(struct i2c_client *c, struct v4l2_streamparm *parms) +static int ov7670_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms) { struct v4l2_captureparm *cp = &parms->parm.capture; struct v4l2_fract *tpf = &cp->timeperframe; @@ -802,7 +821,7 @@ static int ov7670_s_parm(struct i2c_client *c, struct v4l2_streamparm *parms) /* * CLKRC has a reserved bit, so let's preserve it. */ - ret = ov7670_read(c, REG_CLKRC, &clkrc); + ret = ov7670_read(sd, REG_CLKRC, &clkrc); if (ret < 0) return ret; if (tpf->numerator == 0 || tpf->denominator == 0) @@ -816,7 +835,7 @@ static int ov7670_s_parm(struct i2c_client *c, struct v4l2_streamparm *parms) clkrc = (clkrc & 0x80) | div; tpf->numerator = 1; tpf->denominator = OV7670_FRAME_RATE/div; - return ov7670_write(c, REG_CLKRC, clkrc); + return ov7670_write(sd, REG_CLKRC, clkrc); } @@ -829,7 +848,7 @@ static int ov7670_s_parm(struct i2c_client *c, struct v4l2_streamparm *parms) -static int ov7670_store_cmatrix(struct i2c_client *client, +static int ov7670_store_cmatrix(struct v4l2_subdev *sd, int matrix[CMATRIX_LEN]) { int i, ret; @@ -839,7 +858,7 @@ static int ov7670_store_cmatrix(struct i2c_client *client, * Weird crap seems to exist in the upper part of * the sign bits register, so let's preserve it. */ - ret = ov7670_read(client, REG_CMATRIX_SIGN, &signbits); + ret = ov7670_read(sd, REG_CMATRIX_SIGN, &signbits); signbits &= 0xc0; for (i = 0; i < CMATRIX_LEN; i++) { @@ -858,9 +877,9 @@ static int ov7670_store_cmatrix(struct i2c_client *client, else raw = matrix[i] & 0xff; } - ret += ov7670_write(client, REG_CMATRIX_BASE + i, raw); + ret += ov7670_write(sd, REG_CMATRIX_BASE + i, raw); } - ret += ov7670_write(client, REG_CMATRIX_SIGN, signbits); + ret += ov7670_write(sd, REG_CMATRIX_SIGN, signbits); return ret; } @@ -943,29 +962,29 @@ static void ov7670_calc_cmatrix(struct ov7670_info *info, -static int ov7670_t_sat(struct i2c_client *client, int value) +static int ov7670_t_sat(struct v4l2_subdev *sd, int value) { - struct ov7670_info *info = i2c_get_clientdata(client); + struct ov7670_info *info = to_state(sd); int matrix[CMATRIX_LEN]; int ret; info->sat = value; ov7670_calc_cmatrix(info, matrix); - ret = ov7670_store_cmatrix(client, matrix); + ret = ov7670_store_cmatrix(sd, matrix); return ret; } -static int ov7670_q_sat(struct i2c_client *client, __s32 *value) +static int ov7670_q_sat(struct v4l2_subdev *sd, __s32 *value) { - struct ov7670_info *info = i2c_get_clientdata(client); + struct ov7670_info *info = to_state(sd); *value = info->sat; return 0; } -static int ov7670_t_hue(struct i2c_client *client, int value) +static int ov7670_t_hue(struct v4l2_subdev *sd, int value) { - struct ov7670_info *info = i2c_get_clientdata(client); + struct ov7670_info *info = to_state(sd); int matrix[CMATRIX_LEN]; int ret; @@ -973,14 +992,14 @@ static int ov7670_t_hue(struct i2c_client *client, int value) return -EINVAL; info->hue = value; ov7670_calc_cmatrix(info, matrix); - ret = ov7670_store_cmatrix(client, matrix); + ret = ov7670_store_cmatrix(sd, matrix); return ret; } -static int ov7670_q_hue(struct i2c_client *client, __s32 *value) +static int ov7670_q_hue(struct v4l2_subdev *sd, __s32 *value) { - struct ov7670_info *info = i2c_get_clientdata(client); + struct ov7670_info *info = to_state(sd); *value = info->hue; return 0; @@ -994,8 +1013,7 @@ static unsigned char ov7670_sm_to_abs(unsigned char v) { if ((v & 0x80) == 0) return v + 128; - else - return 128 - (v & 0x7f); + return 128 - (v & 0x7f); } @@ -1003,105 +1021,104 @@ static unsigned char ov7670_abs_to_sm(unsigned char v) { if (v > 127) return v & 0x7f; - else - return (128 - v) | 0x80; + return (128 - v) | 0x80; } -static int ov7670_t_brightness(struct i2c_client *client, int value) +static int ov7670_t_brightness(struct v4l2_subdev *sd, int value) { unsigned char com8 = 0, v; int ret; - ov7670_read(client, REG_COM8, &com8); + ov7670_read(sd, REG_COM8, &com8); com8 &= ~COM8_AEC; - ov7670_write(client, REG_COM8, com8); + ov7670_write(sd, REG_COM8, com8); v = ov7670_abs_to_sm(value); - ret = ov7670_write(client, REG_BRIGHT, v); + ret = ov7670_write(sd, REG_BRIGHT, v); return ret; } -static int ov7670_q_brightness(struct i2c_client *client, __s32 *value) +static int ov7670_q_brightness(struct v4l2_subdev *sd, __s32 *value) { unsigned char v = 0; - int ret = ov7670_read(client, REG_BRIGHT, &v); + int ret = ov7670_read(sd, REG_BRIGHT, &v); *value = ov7670_sm_to_abs(v); return ret; } -static int ov7670_t_contrast(struct i2c_client *client, int value) +static int ov7670_t_contrast(struct v4l2_subdev *sd, int value) { - return ov7670_write(client, REG_CONTRAS, (unsigned char) value); + return ov7670_write(sd, REG_CONTRAS, (unsigned char) value); } -static int ov7670_q_contrast(struct i2c_client *client, __s32 *value) +static int ov7670_q_contrast(struct v4l2_subdev *sd, __s32 *value) { unsigned char v = 0; - int ret = ov7670_read(client, REG_CONTRAS, &v); + int ret = ov7670_read(sd, REG_CONTRAS, &v); *value = v; return ret; } -static int ov7670_q_hflip(struct i2c_client *client, __s32 *value) +static int ov7670_q_hflip(struct v4l2_subdev *sd, __s32 *value) { int ret; unsigned char v = 0; - ret = ov7670_read(client, REG_MVFP, &v); + ret = ov7670_read(sd, REG_MVFP, &v); *value = (v & MVFP_MIRROR) == MVFP_MIRROR; return ret; } -static int ov7670_t_hflip(struct i2c_client *client, int value) +static int ov7670_t_hflip(struct v4l2_subdev *sd, int value) { unsigned char v = 0; int ret; - ret = ov7670_read(client, REG_MVFP, &v); + ret = ov7670_read(sd, REG_MVFP, &v); if (value) v |= MVFP_MIRROR; else v &= ~MVFP_MIRROR; msleep(10); /* FIXME */ - ret += ov7670_write(client, REG_MVFP, v); + ret += ov7670_write(sd, REG_MVFP, v); return ret; } -static int ov7670_q_vflip(struct i2c_client *client, __s32 *value) +static int ov7670_q_vflip(struct v4l2_subdev *sd, __s32 *value) { int ret; unsigned char v = 0; - ret = ov7670_read(client, REG_MVFP, &v); + ret = ov7670_read(sd, REG_MVFP, &v); *value = (v & MVFP_FLIP) == MVFP_FLIP; return ret; } -static int ov7670_t_vflip(struct i2c_client *client, int value) +static int ov7670_t_vflip(struct v4l2_subdev *sd, int value) { unsigned char v = 0; int ret; - ret = ov7670_read(client, REG_MVFP, &v); + ret = ov7670_read(sd, REG_MVFP, &v); if (value) v |= MVFP_FLIP; else v &= ~MVFP_FLIP; msleep(10); /* FIXME */ - ret += ov7670_write(client, REG_MVFP, v); + ret += ov7670_write(sd, REG_MVFP, v); return ret; } static struct ov7670_control { struct v4l2_queryctrl qc; - int (*query)(struct i2c_client *c, __s32 *value); - int (*tweak)(struct i2c_client *c, int value); + int (*query)(struct v4l2_subdev *sd, __s32 *value); + int (*tweak)(struct v4l2_subdev *sd, int value); } ov7670_controls[] = { { @@ -1200,7 +1217,7 @@ static struct ov7670_control *ov7670_find_control(__u32 id) } -static int ov7670_queryctrl(struct i2c_client *client, +static int ov7670_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) { struct ov7670_control *ctrl = ov7670_find_control(qc->id); @@ -1211,161 +1228,128 @@ static int ov7670_queryctrl(struct i2c_client *client, return 0; } -static int ov7670_g_ctrl(struct i2c_client *client, struct v4l2_control *ctrl) +static int ov7670_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) { struct ov7670_control *octrl = ov7670_find_control(ctrl->id); int ret; if (octrl == NULL) return -EINVAL; - ret = octrl->query(client, &ctrl->value); + ret = octrl->query(sd, &ctrl->value); if (ret >= 0) return 0; return ret; } -static int ov7670_s_ctrl(struct i2c_client *client, struct v4l2_control *ctrl) +static int ov7670_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) { struct ov7670_control *octrl = ov7670_find_control(ctrl->id); int ret; if (octrl == NULL) return -EINVAL; - ret = octrl->tweak(client, ctrl->value); + ret = octrl->tweak(sd, ctrl->value); if (ret >= 0) return 0; return ret; } +static int ov7670_g_chip_ident(struct v4l2_subdev *sd, + struct v4l2_dbg_chip_ident *chip) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_OV7670, 0); +} + +static int ov7670_command(struct i2c_client *client, unsigned cmd, void *arg) +{ + return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg); +} +/* ----------------------------------------------------------------------- */ +static const struct v4l2_subdev_core_ops ov7670_core_ops = { + .g_chip_ident = ov7670_g_chip_ident, + .g_ctrl = ov7670_g_ctrl, + .s_ctrl = ov7670_s_ctrl, + .queryctrl = ov7670_queryctrl, + .reset = ov7670_reset, + .init = ov7670_init, +}; +static const struct v4l2_subdev_video_ops ov7670_video_ops = { + .enum_fmt = ov7670_enum_fmt, + .try_fmt = ov7670_try_fmt, + .s_fmt = ov7670_s_fmt, + .s_parm = ov7670_s_parm, + .g_parm = ov7670_g_parm, +}; +static const struct v4l2_subdev_ops ov7670_ops = { + .core = &ov7670_core_ops, + .video = &ov7670_video_ops, +}; -/* - * Basic i2c stuff. - */ -static struct i2c_driver ov7670_driver; +/* ----------------------------------------------------------------------- */ -static int ov7670_attach(struct i2c_adapter *adapter) +static int ov7670_probe(struct i2c_client *client, + const struct i2c_device_id *id) { - int ret; - struct i2c_client *client; + struct v4l2_subdev *sd; struct ov7670_info *info; + int ret; /* * For now: only deal with adapters we recognize. */ - if (adapter->id != I2C_HW_SMBUS_CAFE) + if (client->adapter->id != I2C_HW_SMBUS_CAFE) return -ENODEV; - - client = kzalloc(sizeof (struct i2c_client), GFP_KERNEL); - if (! client) + info = kzalloc(sizeof(struct ov7670_info), GFP_KERNEL); + if (info == NULL) return -ENOMEM; - client->adapter = adapter; - client->addr = OV7670_I2C_ADDR; - client->driver = &ov7670_driver, - strcpy(client->name, "OV7670"); - /* - * Set up our info structure. - */ - info = kzalloc(sizeof (struct ov7670_info), GFP_KERNEL); - if (! info) { - ret = -ENOMEM; - goto out_free; + sd = &info->sd; + v4l2_i2c_subdev_init(sd, client, &ov7670_ops); + + /* Make sure it's an ov7670 */ + ret = ov7670_detect(sd); + if (ret) { + v4l_dbg(1, debug, client, + "chip found @ 0x%x (%s) is not an ov7670 chip.\n", + client->addr << 1, client->adapter->name); + kfree(info); + return ret; } + v4l_info(client, "chip found @ 0x%02x (%s)\n", + client->addr << 1, client->adapter->name); + info->fmt = &ov7670_formats[0]; info->sat = 128; /* Review this */ - i2c_set_clientdata(client, info); - /* - * Make sure it's an ov7670 - */ - ret = ov7670_detect(client); - if (ret) - goto out_free_info; - ret = i2c_attach_client(client); - if (ret) - goto out_free_info; return 0; - - out_free_info: - kfree(info); - out_free: - kfree(client); - return ret; } -static int ov7670_detach(struct i2c_client *client) +static int ov7670_remove(struct i2c_client *client) { - i2c_detach_client(client); - kfree(i2c_get_clientdata(client)); - kfree(client); - return 0; -} + struct v4l2_subdev *sd = i2c_get_clientdata(client); - -static int ov7670_command(struct i2c_client *client, unsigned int cmd, - void *arg) -{ - switch (cmd) { - case VIDIOC_DBG_G_CHIP_IDENT: - return v4l2_chip_ident_i2c_client(client, arg, V4L2_IDENT_OV7670, 0); - - case VIDIOC_INT_RESET: - ov7670_reset(client); - return 0; - - case VIDIOC_INT_INIT: - return ov7670_init(client); - - case VIDIOC_ENUM_FMT: - return ov7670_enum_fmt(client, (struct v4l2_fmtdesc *) arg); - case VIDIOC_TRY_FMT: - return ov7670_try_fmt(client, (struct v4l2_format *) arg, NULL, NULL); - case VIDIOC_S_FMT: - return ov7670_s_fmt(client, (struct v4l2_format *) arg); - case VIDIOC_QUERYCTRL: - return ov7670_queryctrl(client, (struct v4l2_queryctrl *) arg); - case VIDIOC_S_CTRL: - return ov7670_s_ctrl(client, (struct v4l2_control *) arg); - case VIDIOC_G_CTRL: - return ov7670_g_ctrl(client, (struct v4l2_control *) arg); - case VIDIOC_S_PARM: - return ov7670_s_parm(client, (struct v4l2_streamparm *) arg); - case VIDIOC_G_PARM: - return ov7670_g_parm(client, (struct v4l2_streamparm *) arg); - } - return -EINVAL; + v4l2_device_unregister_subdev(sd); + kfree(to_state(sd)); + return 0; } - - -static struct i2c_driver ov7670_driver = { - .driver = { - .name = "ov7670", - }, - .id = I2C_DRIVERID_OV7670, - .attach_adapter = ov7670_attach, - .detach_client = ov7670_detach, - .command = ov7670_command, +static const struct i2c_device_id ov7670_id[] = { + { "ov7670", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ov7670_id); + +static struct v4l2_i2c_driver_data v4l2_i2c_data = { + .name = "ov7670", + .command = ov7670_command, + .probe = ov7670_probe, + .remove = ov7670_remove, + .legacy_class = I2C_CLASS_TV_ANALOG, + .id_table = ov7670_id, }; - - -/* - * Module initialization - */ -static int __init ov7670_mod_init(void) -{ - printk(KERN_NOTICE "OmniVision ov7670 sensor driver, at your service\n"); - return i2c_add_driver(&ov7670_driver); -} - -static void __exit ov7670_mod_exit(void) -{ - i2c_del_driver(&ov7670_driver); -} - -module_init(ov7670_mod_init); -module_exit(ov7670_mod_exit); 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