From 68e342b3068cae62f3378cb4a1d385734ea52784 Mon Sep 17 00:00:00 2001 From: David Cohen Date: Sat, 12 Feb 2011 18:05:06 -0300 Subject: [media] omap3isp: Statistics The OMAP3 ISP statistics entities compute histogram and H3A statistics information from capture images. Signed-off-by: Laurent Pinchart Signed-off-by: Sakari Ailus Signed-off-by: David Cohen Signed-off-by: Stanimir Varbanov Signed-off-by: Vimarsh Zutshi Signed-off-by: Tuukka Toivonen Signed-off-by: Sergio Aguirre Signed-off-by: Antti Koskipaa Signed-off-by: Ivan T. Ivanov Signed-off-by: RaniSuneela Signed-off-by: Atanas Filipov Signed-off-by: Gjorgji Rosikopulos Signed-off-by: Hiroshi DOYU Signed-off-by: Nayden Kanchev Signed-off-by: Phil Carmody Signed-off-by: Artem Bityutskiy Signed-off-by: Dominic Curran Signed-off-by: Ilkka Myllyperkio Signed-off-by: Pallavi Kulkarni Signed-off-by: Vaibhav Hiremath Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/omap3isp/isph3a_aewb.c | 374 +++++++++++++++++++++++++++++ 1 file changed, 374 insertions(+) create mode 100644 drivers/media/video/omap3isp/isph3a_aewb.c (limited to 'drivers/media/video/omap3isp/isph3a_aewb.c') diff --git a/drivers/media/video/omap3isp/isph3a_aewb.c b/drivers/media/video/omap3isp/isph3a_aewb.c new file mode 100644 index 000000000000..8068cefd8d89 --- /dev/null +++ b/drivers/media/video/omap3isp/isph3a_aewb.c @@ -0,0 +1,374 @@ +/* + * isph3a.c + * + * TI OMAP3 ISP - H3A module + * + * Copyright (C) 2010 Nokia Corporation + * Copyright (C) 2009 Texas Instruments, Inc. + * + * Contacts: David Cohen + * Laurent Pinchart + * Sakari Ailus + * + * 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. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + +#include +#include + +#include "isp.h" +#include "isph3a.h" +#include "ispstat.h" + +/* + * h3a_aewb_update_regs - Helper function to update h3a registers. + */ +static void h3a_aewb_setup_regs(struct ispstat *aewb, void *priv) +{ + struct omap3isp_h3a_aewb_config *conf = priv; + u32 pcr; + u32 win1; + u32 start; + u32 blk; + u32 subwin; + + if (aewb->state == ISPSTAT_DISABLED) + return; + + isp_reg_writel(aewb->isp, aewb->active_buf->iommu_addr, + OMAP3_ISP_IOMEM_H3A, ISPH3A_AEWBUFST); + + if (!aewb->update) + return; + + /* Converting config metadata into reg values */ + pcr = conf->saturation_limit << ISPH3A_PCR_AEW_AVE2LMT_SHIFT; + pcr |= !!conf->alaw_enable << ISPH3A_PCR_AEW_ALAW_EN_SHIFT; + + win1 = ((conf->win_height >> 1) - 1) << ISPH3A_AEWWIN1_WINH_SHIFT; + win1 |= ((conf->win_width >> 1) - 1) << ISPH3A_AEWWIN1_WINW_SHIFT; + win1 |= (conf->ver_win_count - 1) << ISPH3A_AEWWIN1_WINVC_SHIFT; + win1 |= (conf->hor_win_count - 1) << ISPH3A_AEWWIN1_WINHC_SHIFT; + + start = conf->hor_win_start << ISPH3A_AEWINSTART_WINSH_SHIFT; + start |= conf->ver_win_start << ISPH3A_AEWINSTART_WINSV_SHIFT; + + blk = conf->blk_ver_win_start << ISPH3A_AEWINBLK_WINSV_SHIFT; + blk |= ((conf->blk_win_height >> 1) - 1) << ISPH3A_AEWINBLK_WINH_SHIFT; + + subwin = ((conf->subsample_ver_inc >> 1) - 1) << + ISPH3A_AEWSUBWIN_AEWINCV_SHIFT; + subwin |= ((conf->subsample_hor_inc >> 1) - 1) << + ISPH3A_AEWSUBWIN_AEWINCH_SHIFT; + + isp_reg_writel(aewb->isp, win1, OMAP3_ISP_IOMEM_H3A, ISPH3A_AEWWIN1); + isp_reg_writel(aewb->isp, start, OMAP3_ISP_IOMEM_H3A, + ISPH3A_AEWINSTART); + isp_reg_writel(aewb->isp, blk, OMAP3_ISP_IOMEM_H3A, ISPH3A_AEWINBLK); + isp_reg_writel(aewb->isp, subwin, OMAP3_ISP_IOMEM_H3A, + ISPH3A_AEWSUBWIN); + isp_reg_clr_set(aewb->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR, + ISPH3A_PCR_AEW_MASK, pcr); + + aewb->update = 0; + aewb->config_counter += aewb->inc_config; + aewb->inc_config = 0; + aewb->buf_size = conf->buf_size; +} + +static void h3a_aewb_enable(struct ispstat *aewb, int enable) +{ + if (enable) { + isp_reg_set(aewb->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR, + ISPH3A_PCR_AEW_EN); + /* This bit is already set if AF is enabled */ + if (aewb->isp->isp_af.state != ISPSTAT_ENABLED) + isp_reg_set(aewb->isp, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL, + ISPCTRL_H3A_CLK_EN); + } else { + isp_reg_clr(aewb->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR, + ISPH3A_PCR_AEW_EN); + /* This bit can't be cleared if AF is enabled */ + if (aewb->isp->isp_af.state != ISPSTAT_ENABLED) + isp_reg_clr(aewb->isp, OMAP3_ISP_IOMEM_MAIN, ISP_CTRL, + ISPCTRL_H3A_CLK_EN); + } +} + +static int h3a_aewb_busy(struct ispstat *aewb) +{ + return isp_reg_readl(aewb->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR) + & ISPH3A_PCR_BUSYAEAWB; +} + +static u32 h3a_aewb_get_buf_size(struct omap3isp_h3a_aewb_config *conf) +{ + /* Number of configured windows + extra row for black data */ + u32 win_count = (conf->ver_win_count + 1) * conf->hor_win_count; + + /* + * Unsaturated block counts for each 8 windows. + * 1 extra for the last (win_count % 8) windows if win_count is not + * divisible by 8. + */ + win_count += (win_count + 7) / 8; + + return win_count * AEWB_PACKET_SIZE; +} + +static int h3a_aewb_validate_params(struct ispstat *aewb, void *new_conf) +{ + struct omap3isp_h3a_aewb_config *user_cfg = new_conf; + u32 buf_size; + + if (unlikely(user_cfg->saturation_limit > + OMAP3ISP_AEWB_MAX_SATURATION_LIM)) + return -EINVAL; + + if (unlikely(user_cfg->win_height < OMAP3ISP_AEWB_MIN_WIN_H || + user_cfg->win_height > OMAP3ISP_AEWB_MAX_WIN_H || + user_cfg->win_height & 0x01)) + return -EINVAL; + + if (unlikely(user_cfg->win_width < OMAP3ISP_AEWB_MIN_WIN_W || + user_cfg->win_width > OMAP3ISP_AEWB_MAX_WIN_W || + user_cfg->win_width & 0x01)) + return -EINVAL; + + if (unlikely(user_cfg->ver_win_count < OMAP3ISP_AEWB_MIN_WINVC || + user_cfg->ver_win_count > OMAP3ISP_AEWB_MAX_WINVC)) + return -EINVAL; + + if (unlikely(user_cfg->hor_win_count < OMAP3ISP_AEWB_MIN_WINHC || + user_cfg->hor_win_count > OMAP3ISP_AEWB_MAX_WINHC)) + return -EINVAL; + + if (unlikely(user_cfg->ver_win_start > OMAP3ISP_AEWB_MAX_WINSTART)) + return -EINVAL; + + if (unlikely(user_cfg->hor_win_start > OMAP3ISP_AEWB_MAX_WINSTART)) + return -EINVAL; + + if (unlikely(user_cfg->blk_ver_win_start > OMAP3ISP_AEWB_MAX_WINSTART)) + return -EINVAL; + + if (unlikely(user_cfg->blk_win_height < OMAP3ISP_AEWB_MIN_WIN_H || + user_cfg->blk_win_height > OMAP3ISP_AEWB_MAX_WIN_H || + user_cfg->blk_win_height & 0x01)) + return -EINVAL; + + if (unlikely(user_cfg->subsample_ver_inc < OMAP3ISP_AEWB_MIN_SUB_INC || + user_cfg->subsample_ver_inc > OMAP3ISP_AEWB_MAX_SUB_INC || + user_cfg->subsample_ver_inc & 0x01)) + return -EINVAL; + + if (unlikely(user_cfg->subsample_hor_inc < OMAP3ISP_AEWB_MIN_SUB_INC || + user_cfg->subsample_hor_inc > OMAP3ISP_AEWB_MAX_SUB_INC || + user_cfg->subsample_hor_inc & 0x01)) + return -EINVAL; + + buf_size = h3a_aewb_get_buf_size(user_cfg); + if (buf_size > user_cfg->buf_size) + user_cfg->buf_size = buf_size; + else if (user_cfg->buf_size > OMAP3ISP_AEWB_MAX_BUF_SIZE) + user_cfg->buf_size = OMAP3ISP_AEWB_MAX_BUF_SIZE; + + return 0; +} + +/* + * h3a_aewb_set_params - Helper function to check & store user given params. + * @new_conf: Pointer to AE and AWB parameters struct. + * + * As most of them are busy-lock registers, need to wait until AEW_BUSY = 0 to + * program them during ISR. + */ +static void h3a_aewb_set_params(struct ispstat *aewb, void *new_conf) +{ + struct omap3isp_h3a_aewb_config *user_cfg = new_conf; + struct omap3isp_h3a_aewb_config *cur_cfg = aewb->priv; + int update = 0; + + if (cur_cfg->saturation_limit != user_cfg->saturation_limit) { + cur_cfg->saturation_limit = user_cfg->saturation_limit; + update = 1; + } + if (cur_cfg->alaw_enable != user_cfg->alaw_enable) { + cur_cfg->alaw_enable = user_cfg->alaw_enable; + update = 1; + } + if (cur_cfg->win_height != user_cfg->win_height) { + cur_cfg->win_height = user_cfg->win_height; + update = 1; + } + if (cur_cfg->win_width != user_cfg->win_width) { + cur_cfg->win_width = user_cfg->win_width; + update = 1; + } + if (cur_cfg->ver_win_count != user_cfg->ver_win_count) { + cur_cfg->ver_win_count = user_cfg->ver_win_count; + update = 1; + } + if (cur_cfg->hor_win_count != user_cfg->hor_win_count) { + cur_cfg->hor_win_count = user_cfg->hor_win_count; + update = 1; + } + if (cur_cfg->ver_win_start != user_cfg->ver_win_start) { + cur_cfg->ver_win_start = user_cfg->ver_win_start; + update = 1; + } + if (cur_cfg->hor_win_start != user_cfg->hor_win_start) { + cur_cfg->hor_win_start = user_cfg->hor_win_start; + update = 1; + } + if (cur_cfg->blk_ver_win_start != user_cfg->blk_ver_win_start) { + cur_cfg->blk_ver_win_start = user_cfg->blk_ver_win_start; + update = 1; + } + if (cur_cfg->blk_win_height != user_cfg->blk_win_height) { + cur_cfg->blk_win_height = user_cfg->blk_win_height; + update = 1; + } + if (cur_cfg->subsample_ver_inc != user_cfg->subsample_ver_inc) { + cur_cfg->subsample_ver_inc = user_cfg->subsample_ver_inc; + update = 1; + } + if (cur_cfg->subsample_hor_inc != user_cfg->subsample_hor_inc) { + cur_cfg->subsample_hor_inc = user_cfg->subsample_hor_inc; + update = 1; + } + + if (update || !aewb->configured) { + aewb->inc_config++; + aewb->update = 1; + cur_cfg->buf_size = h3a_aewb_get_buf_size(cur_cfg); + } +} + +static long h3a_aewb_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) +{ + struct ispstat *stat = v4l2_get_subdevdata(sd); + + switch (cmd) { + case VIDIOC_OMAP3ISP_AEWB_CFG: + return omap3isp_stat_config(stat, arg); + case VIDIOC_OMAP3ISP_STAT_REQ: + return omap3isp_stat_request_statistics(stat, arg); + case VIDIOC_OMAP3ISP_STAT_EN: { + unsigned long *en = arg; + return omap3isp_stat_enable(stat, !!*en); + } + } + + return -ENOIOCTLCMD; +} + +static const struct ispstat_ops h3a_aewb_ops = { + .validate_params = h3a_aewb_validate_params, + .set_params = h3a_aewb_set_params, + .setup_regs = h3a_aewb_setup_regs, + .enable = h3a_aewb_enable, + .busy = h3a_aewb_busy, +}; + +static const struct v4l2_subdev_core_ops h3a_aewb_subdev_core_ops = { + .ioctl = h3a_aewb_ioctl, + .subscribe_event = omap3isp_stat_subscribe_event, + .unsubscribe_event = omap3isp_stat_unsubscribe_event, +}; + +static const struct v4l2_subdev_video_ops h3a_aewb_subdev_video_ops = { + .s_stream = omap3isp_stat_s_stream, +}; + +static const struct v4l2_subdev_ops h3a_aewb_subdev_ops = { + .core = &h3a_aewb_subdev_core_ops, + .video = &h3a_aewb_subdev_video_ops, +}; + +/* + * omap3isp_h3a_aewb_init - Module Initialisation. + */ +int omap3isp_h3a_aewb_init(struct isp_device *isp) +{ + struct ispstat *aewb = &isp->isp_aewb; + struct omap3isp_h3a_aewb_config *aewb_cfg; + struct omap3isp_h3a_aewb_config *aewb_recover_cfg; + int ret; + + aewb_cfg = kzalloc(sizeof(*aewb_cfg), GFP_KERNEL); + if (!aewb_cfg) + return -ENOMEM; + + memset(aewb, 0, sizeof(*aewb)); + aewb->ops = &h3a_aewb_ops; + aewb->priv = aewb_cfg; + aewb->dma_ch = -1; + aewb->event_type = V4L2_EVENT_OMAP3ISP_AEWB; + aewb->isp = isp; + + /* Set recover state configuration */ + aewb_recover_cfg = kzalloc(sizeof(*aewb_recover_cfg), GFP_KERNEL); + if (!aewb_recover_cfg) { + dev_err(aewb->isp->dev, "AEWB: cannot allocate memory for " + "recover configuration.\n"); + ret = -ENOMEM; + goto err_recover_alloc; + } + + aewb_recover_cfg->saturation_limit = OMAP3ISP_AEWB_MAX_SATURATION_LIM; + aewb_recover_cfg->win_height = OMAP3ISP_AEWB_MIN_WIN_H; + aewb_recover_cfg->win_width = OMAP3ISP_AEWB_MIN_WIN_W; + aewb_recover_cfg->ver_win_count = OMAP3ISP_AEWB_MIN_WINVC; + aewb_recover_cfg->hor_win_count = OMAP3ISP_AEWB_MIN_WINHC; + aewb_recover_cfg->blk_ver_win_start = aewb_recover_cfg->ver_win_start + + aewb_recover_cfg->win_height * aewb_recover_cfg->ver_win_count; + aewb_recover_cfg->blk_win_height = OMAP3ISP_AEWB_MIN_WIN_H; + aewb_recover_cfg->subsample_ver_inc = OMAP3ISP_AEWB_MIN_SUB_INC; + aewb_recover_cfg->subsample_hor_inc = OMAP3ISP_AEWB_MIN_SUB_INC; + + if (h3a_aewb_validate_params(aewb, aewb_recover_cfg)) { + dev_err(aewb->isp->dev, "AEWB: recover configuration is " + "invalid.\n"); + ret = -EINVAL; + goto err_conf; + } + + aewb_recover_cfg->buf_size = h3a_aewb_get_buf_size(aewb_recover_cfg); + aewb->recover_priv = aewb_recover_cfg; + + ret = omap3isp_stat_init(aewb, "AEWB", &h3a_aewb_subdev_ops); + if (ret) + goto err_conf; + + return 0; + +err_conf: + kfree(aewb_recover_cfg); +err_recover_alloc: + kfree(aewb_cfg); + + return ret; +} + +/* + * omap3isp_h3a_aewb_cleanup - Module exit. + */ +void omap3isp_h3a_aewb_cleanup(struct isp_device *isp) +{ + kfree(isp->isp_aewb.priv); + kfree(isp->isp_aewb.recover_priv); + omap3isp_stat_free(&isp->isp_aewb); +} -- cgit v1.2.3-55-g7522