diff options
Diffstat (limited to 'drivers/media/video/noon010pc30.c')
| -rw-r--r-- | drivers/media/video/noon010pc30.c | 264 |
1 files changed, 167 insertions, 97 deletions
diff --git a/drivers/media/video/noon010pc30.c b/drivers/media/video/noon010pc30.c index 35f722a88f76..50838bf84204 100644 --- a/drivers/media/video/noon010pc30.c +++ b/drivers/media/video/noon010pc30.c @@ -1,7 +1,7 @@ /* * Driver for SiliconFile NOON010PC30 CIF (1/11") Image Sensor with ISP * - * Copyright (C) 2010 Samsung Electronics + * Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd. * Contact: Sylwester Nawrocki, <s.nawrocki@samsung.com> * * Initial register configuration based on a driver authored by @@ -10,7 +10,7 @@ * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later vergsion. + * (at your option) any later version. */ #include <linux/delay.h> @@ -21,6 +21,7 @@ #include <media/noon010pc30.h> #include <media/v4l2-chip-ident.h> #include <linux/videodev2.h> +#include <linux/module.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-mediabus.h> @@ -131,17 +132,23 @@ static const char * const noon010_supply_name[] = { struct noon010_info { struct v4l2_subdev sd; + struct media_pad pad; struct v4l2_ctrl_handler hdl; - const struct noon010pc30_platform_data *pdata; + struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES]; + u32 gpio_nreset; + u32 gpio_nstby; + + /* Protects the struct members below */ + struct mutex lock; + const struct noon010_format *curr_fmt; const struct noon010_frmsize *curr_win; + unsigned int apply_new_cfg:1; + unsigned int streaming:1; unsigned int hflip:1; unsigned int vflip:1; unsigned int power:1; u8 i2c_reg_page; - struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES]; - u32 gpio_nreset; - u32 gpio_nstby; }; struct i2c_regval { @@ -292,8 +299,10 @@ static int noon010_power_ctrl(struct v4l2_subdev *sd, bool reset, bool sleep) u8 reg = sleep ? 0xF1 : 0xF0; int ret = 0; - if (reset) + if (reset) { ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02); + udelay(20); + } if (!ret) { ret = cam_i2c_write(sd, POWER_CTRL_REG, reg); if (reset && !ret) @@ -313,6 +322,7 @@ static int noon010_enable_autowhitebalance(struct v4l2_subdev *sd, int on) return ret; } +/* Called with struct noon010_info.lock mutex held */ static int noon010_set_flip(struct v4l2_subdev *sd, int hflip, int vflip) { struct noon010_info *info = to_noon010(sd); @@ -340,21 +350,18 @@ static int noon010_set_flip(struct v4l2_subdev *sd, int hflip, int vflip) static int noon010_set_params(struct v4l2_subdev *sd) { struct noon010_info *info = to_noon010(sd); - int ret; - if (!info->curr_win) - return -EINVAL; - - ret = cam_i2c_write(sd, VDO_CTL_REG(0), info->curr_win->vid_ctl1); - - if (!ret && info->curr_fmt) - ret = cam_i2c_write(sd, ISP_CTL_REG(0), - info->curr_fmt->ispctl1_reg); - return ret; + int ret = cam_i2c_write(sd, VDO_CTL_REG(0), + info->curr_win->vid_ctl1); + if (ret) + return ret; + return cam_i2c_write(sd, ISP_CTL_REG(0), + info->curr_fmt->ispctl1_reg); } /* Find nearest matching image pixel size. */ -static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf) +static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf, + const struct noon010_frmsize **size) { unsigned int min_err = ~0; int i = ARRAY_SIZE(noon010_sizes); @@ -374,11 +381,14 @@ static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf) if (match) { mf->width = match->width; mf->height = match->height; + if (size) + *size = match; return 0; } return -EINVAL; } +/* Called with info.lock mutex held */ static int power_enable(struct noon010_info *info) { int ret; @@ -419,6 +429,7 @@ static int power_enable(struct noon010_info *info) return 0; } +/* Called with info.lock mutex held */ static int power_disable(struct noon010_info *info) { int ret; @@ -448,147 +459,175 @@ static int power_disable(struct noon010_info *info) static int noon010_s_ctrl(struct v4l2_ctrl *ctrl) { struct v4l2_subdev *sd = to_sd(ctrl); + struct noon010_info *info = to_noon010(sd); + int ret = 0; v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n", __func__, ctrl->id, ctrl->val); + mutex_lock(&info->lock); + /* + * If the device is not powered up by the host driver do + * not apply any controls to H/W at this time. Instead + * the controls will be restored right after power-up. + */ + if (!info->power) + goto unlock; + switch (ctrl->id) { case V4L2_CID_AUTO_WHITE_BALANCE: - return noon010_enable_autowhitebalance(sd, ctrl->val); + ret = noon010_enable_autowhitebalance(sd, ctrl->val); + break; case V4L2_CID_BLUE_BALANCE: - return cam_i2c_write(sd, MWB_BGAIN_REG, ctrl->val); + ret = cam_i2c_write(sd, MWB_BGAIN_REG, ctrl->val); + break; case V4L2_CID_RED_BALANCE: - return cam_i2c_write(sd, MWB_RGAIN_REG, ctrl->val); + ret = cam_i2c_write(sd, MWB_RGAIN_REG, ctrl->val); + break; default: - return -EINVAL; + ret = -EINVAL; } +unlock: + mutex_unlock(&info->lock); + return ret; } -static int noon010_enum_fmt(struct v4l2_subdev *sd, unsigned int index, - enum v4l2_mbus_pixelcode *code) +static int noon010_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_fh *fh, + struct v4l2_subdev_mbus_code_enum *code) { - if (!code || index >= ARRAY_SIZE(noon010_formats)) + if (code->index >= ARRAY_SIZE(noon010_formats)) return -EINVAL; - *code = noon010_formats[index].code; + code->code = noon010_formats[code->index].code; return 0; } -static int noon010_g_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf) +static int noon010_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *fmt) { struct noon010_info *info = to_noon010(sd); - int ret; - - if (!mf) - return -EINVAL; + struct v4l2_mbus_framefmt *mf; - if (!info->curr_win || !info->curr_fmt) { - ret = noon010_set_params(sd); - if (ret) - return ret; + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + if (fh) { + mf = v4l2_subdev_get_try_format(fh, 0); + fmt->format = *mf; + } + return 0; } + mf = &fmt->format; - mf->width = info->curr_win->width; - mf->height = info->curr_win->height; - mf->code = info->curr_fmt->code; - mf->colorspace = info->curr_fmt->colorspace; - mf->field = V4L2_FIELD_NONE; + mutex_lock(&info->lock); + mf->width = info->curr_win->width; + mf->height = info->curr_win->height; + mf->code = info->curr_fmt->code; + mf->colorspace = info->curr_fmt->colorspace; + mf->field = V4L2_FIELD_NONE; + mutex_unlock(&info->lock); return 0; } /* Return nearest media bus frame format. */ -static const struct noon010_format *try_fmt(struct v4l2_subdev *sd, +static const struct noon010_format *noon010_try_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf) { int i = ARRAY_SIZE(noon010_formats); - noon010_try_frame_size(mf); - - while (i--) + while (--i) if (mf->code == noon010_formats[i].code) break; - mf->code = noon010_formats[i].code; return &noon010_formats[i]; } -static int noon010_try_fmt(struct v4l2_subdev *sd, - struct v4l2_mbus_framefmt *mf) -{ - if (!sd || !mf) - return -EINVAL; - - try_fmt(sd, mf); - return 0; -} - -static int noon010_s_fmt(struct v4l2_subdev *sd, - struct v4l2_mbus_framefmt *mf) +static int noon010_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *fmt) { struct noon010_info *info = to_noon010(sd); + const struct noon010_frmsize *size = NULL; + const struct noon010_format *nf; + struct v4l2_mbus_framefmt *mf; + int ret = 0; - if (!sd || !mf) - return -EINVAL; - - info->curr_fmt = try_fmt(sd, mf); + nf = noon010_try_fmt(sd, &fmt->format); + noon010_try_frame_size(&fmt->format, &size); + fmt->format.colorspace = V4L2_COLORSPACE_JPEG; - return noon010_set_params(sd); + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + if (fh) { + mf = v4l2_subdev_get_try_format(fh, 0); + *mf = fmt->format; + } + return 0; + } + mutex_lock(&info->lock); + if (!info->streaming) { + info->apply_new_cfg = 1; + info->curr_fmt = nf; + info->curr_win = size; + } else { + ret = -EBUSY; + } + mutex_unlock(&info->lock); + return ret; } +/* Called with struct noon010_info.lock mutex held */ static int noon010_base_config(struct v4l2_subdev *sd) { - struct noon010_info *info = to_noon010(sd); - int ret; - - ret = noon010_bulk_write_reg(sd, noon010_base_regs); - if (!ret) { - info->curr_fmt = &noon010_formats[0]; - info->curr_win = &noon010_sizes[0]; + int ret = noon010_bulk_write_reg(sd, noon010_base_regs); + if (!ret) ret = noon010_set_params(sd); - } if (!ret) ret = noon010_set_flip(sd, 1, 0); - if (!ret) - ret = noon010_power_ctrl(sd, false, false); - /* sync the handler and the registers state */ - v4l2_ctrl_handler_setup(&to_noon010(sd)->hdl); return ret; } static int noon010_s_power(struct v4l2_subdev *sd, int on) { struct noon010_info *info = to_noon010(sd); - const struct noon010pc30_platform_data *pdata = info->pdata; - int ret = 0; - - if (WARN(pdata == NULL, "No platform data!\n")) - return -ENOMEM; + int ret; + mutex_lock(&info->lock); if (on) { ret = power_enable(info); - if (ret) - return ret; - ret = noon010_base_config(sd); + if (!ret) + ret = noon010_base_config(sd); } else { noon010_power_ctrl(sd, false, true); ret = power_disable(info); - info->curr_win = NULL; - info->curr_fmt = NULL; } + mutex_unlock(&info->lock); + + /* Restore the controls state */ + if (!ret && on) + ret = v4l2_ctrl_handler_setup(&info->hdl); return ret; } -static int noon010_g_chip_ident(struct v4l2_subdev *sd, - struct v4l2_dbg_chip_ident *chip) +static int noon010_s_stream(struct v4l2_subdev *sd, int on) { - struct i2c_client *client = v4l2_get_subdevdata(sd); + struct noon010_info *info = to_noon010(sd); + int ret = 0; - return v4l2_chip_ident_i2c_client(client, chip, - V4L2_IDENT_NOON010PC30, 0); + mutex_lock(&info->lock); + if (!info->streaming != !on) { + ret = noon010_power_ctrl(sd, false, !on); + if (!ret) + info->streaming = on; + } + if (!ret && on && info->apply_new_cfg) { + ret = noon010_set_params(sd); + if (!ret) + info->apply_new_cfg = 0; + } + mutex_unlock(&info->lock); + return ret; } static int noon010_log_status(struct v4l2_subdev *sd) @@ -599,12 +638,27 @@ static int noon010_log_status(struct v4l2_subdev *sd) return 0; } +static int noon010_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct v4l2_mbus_framefmt *mf = v4l2_subdev_get_try_format(fh, 0); + + mf->width = noon010_sizes[0].width; + mf->height = noon010_sizes[0].height; + mf->code = noon010_formats[0].code; + mf->colorspace = V4L2_COLORSPACE_JPEG; + mf->field = V4L2_FIELD_NONE; + return 0; +} + +static const struct v4l2_subdev_internal_ops noon010_subdev_internal_ops = { + .open = noon010_open, +}; + static const struct v4l2_ctrl_ops noon010_ctrl_ops = { .s_ctrl = noon010_s_ctrl, }; static const struct v4l2_subdev_core_ops noon010_core_ops = { - .g_chip_ident = noon010_g_chip_ident, .s_power = noon010_s_power, .g_ctrl = v4l2_subdev_g_ctrl, .s_ctrl = v4l2_subdev_s_ctrl, @@ -616,15 +670,19 @@ static const struct v4l2_subdev_core_ops noon010_core_ops = { .log_status = noon010_log_status, }; -static const struct v4l2_subdev_video_ops noon010_video_ops = { - .g_mbus_fmt = noon010_g_fmt, - .s_mbus_fmt = noon010_s_fmt, - .try_mbus_fmt = noon010_try_fmt, - .enum_mbus_fmt = noon010_enum_fmt, +static struct v4l2_subdev_pad_ops noon010_pad_ops = { + .enum_mbus_code = noon010_enum_mbus_code, + .get_fmt = noon010_get_fmt, + .set_fmt = noon010_set_fmt, +}; + +static struct v4l2_subdev_video_ops noon010_video_ops = { + .s_stream = noon010_s_stream, }; static const struct v4l2_subdev_ops noon010_ops = { .core = &noon010_core_ops, + .pad = &noon010_pad_ops, .video = &noon010_video_ops, }; @@ -665,10 +723,14 @@ static int noon010_probe(struct i2c_client *client, if (!info) return -ENOMEM; + mutex_init(&info->lock); sd = &info->sd; strlcpy(sd->name, MODULE_NAME, sizeof(sd->name)); v4l2_i2c_subdev_init(sd, client, &noon010_ops); + sd->internal_ops = &noon010_subdev_internal_ops; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + v4l2_ctrl_handler_init(&info->hdl, 3); v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops, @@ -684,10 +746,11 @@ static int noon010_probe(struct i2c_client *client, if (ret) goto np_err; - info->pdata = client->dev.platform_data; info->i2c_reg_page = -1; info->gpio_nreset = -EINVAL; info->gpio_nstby = -EINVAL; + info->curr_fmt = &noon010_formats[0]; + info->curr_win = &noon010_sizes[0]; if (gpio_is_valid(pdata->gpio_nreset)) { ret = gpio_request(pdata->gpio_nreset, "NOON010PC30 NRST"); @@ -719,11 +782,17 @@ static int noon010_probe(struct i2c_client *client, if (ret) goto np_reg_err; + info->pad.flags = MEDIA_PAD_FL_SOURCE; + sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + ret = media_entity_init(&sd->entity, 1, &info->pad, 0); + if (ret < 0) + goto np_me_err; + ret = noon010_detect(client, info); if (!ret) return 0; - /* the sensor detection failed */ +np_me_err: regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply); np_reg_err: if (gpio_is_valid(info->gpio_nstby)) @@ -754,6 +823,7 @@ static int noon010_remove(struct i2c_client *client) if (gpio_is_valid(info->gpio_nstby)) gpio_free(info->gpio_nstby); + media_entity_cleanup(&sd->entity); kfree(info); return 0; } |