static int hist_validate_params(struct ispstat *hist, void *new_conf)
{
struct omap3isp_hist_config *user_cfg = new_conf;
int c;
u32 buf_size;
if (user_cfg->cfa > OMAP3ISP_HIST_CFA_FOVEONX3)
return -EINVAL;
if ((user_cfg->num_regions < OMAP3ISP_HIST_MIN_REGIONS) ||
(user_cfg->num_regions > OMAP3ISP_HIST_MAX_REGIONS))
return -EINVAL;
for (c = 0; c < user_cfg->num_regions; c++) {
if (user_cfg->region[c].h_start & ~ISPHIST_REG_START_END_MASK)
return -EINVAL;
if (user_cfg->region[c].h_end & ~ISPHIST_REG_START_END_MASK)
return -EINVAL;
if (user_cfg->region[c].v_start & ~ISPHIST_REG_START_END_MASK)
return -EINVAL;
if (user_cfg->region[c].v_end & ~ISPHIST_REG_START_END_MASK)
return -EINVAL;
if (user_cfg->region[c].h_start > user_cfg->region[c].h_end)
return -EINVAL;
if (user_cfg->region[c].v_start > user_cfg->region[c].v_end)
return -EINVAL;
}
switch (user_cfg->num_regions) {
case 1:
if (user_cfg->hist_bins > OMAP3ISP_HIST_BINS_256)
return -EINVAL;
break;
case 2:
if (user_cfg->hist_bins > OMAP3ISP_HIST_BINS_128)
return -EINVAL;
break;
default:
if (user_cfg->hist_bins > OMAP3ISP_HIST_BINS_64)
return -EINVAL;
break;
}
buf_size = hist_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_HIST_MAX_BUF_SIZE)
user_cfg->buf_size = OMAP3ISP_HIST_MAX_BUF_SIZE;
return 0;
}
static void hist_set_params(struct ispstat *hist, void *new_conf)
{
struct omap3isp_hist_config *user_cfg = new_conf;
struct omap3isp_hist_config *cur_cfg = hist->priv;
if (!hist->configured || hist_comp_params(hist, user_cfg)) {
memcpy(cur_cfg, user_cfg, sizeof(*user_cfg));
if (user_cfg->num_acc_frames == 0)
user_cfg->num_acc_frames = 1;
hist->inc_config++;
hist->update = 1;
cur_cfg->buf_size = hist_get_buf_size(cur_cfg);
}
}
/*
* hist_update_params - Helper function to check and store user given params.
* @new_conf: Pointer to user configuration structure.
*/
static void hist_set_params(struct ispstat *hist, void *new_conf)
{
struct omap3isp_hist_config *user_cfg = new_conf;
struct omap3isp_hist_config *cur_cfg = hist->priv;
if (!hist->configured || hist_comp_params(hist, user_cfg)) {
memcpy(cur_cfg, user_cfg, sizeof(*user_cfg));
if (user_cfg->num_acc_frames == 0)
user_cfg->num_acc_frames = 1;
hist->inc_config++;
hist->update = 1;
/*
* User might be asked for a bigger buffer than necessary for
* this configuration. In order to return the right amount of
* data during buffer request, let's calculate the size here
* instead of stick with user_cfg->buf_size.
*/
cur_cfg->buf_size = hist_get_buf_size(cur_cfg);
}
}