34 static void hist_reset_mem(struct ispstat *hist)  in hist_reset_mem()  argument
36 	struct isp_device *isp = hist->isp;  in hist_reset_mem()
37 	struct omap3isp_hist_config *conf = hist->priv;  in hist_reset_mem()
60 	hist->wait_acc_frames = conf->num_acc_frames;  in hist_reset_mem()
66 static void hist_setup_regs(struct ispstat *hist, void *priv)  in hist_setup_regs()  argument
68 	struct isp_device *isp = hist->isp;  in hist_setup_regs()
76 	if (!hist->update || hist->state == ISPSTAT_DISABLED ||  in hist_setup_regs()
77 	    hist->state == ISPSTAT_DISABLING)  in hist_setup_regs()
125 	hist_reset_mem(hist);  in hist_setup_regs()
138 	hist->update = 0;  in hist_setup_regs()
139 	hist->config_counter += hist->inc_config;  in hist_setup_regs()
140 	hist->inc_config = 0;  in hist_setup_regs()
141 	hist->buf_size = conf->buf_size;  in hist_setup_regs()
144 static void hist_enable(struct ispstat *hist, int enable)  in hist_enable()  argument
147 		isp_reg_set(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_PCR,  in hist_enable()
149 		omap3isp_subclk_enable(hist->isp, OMAP3_ISP_SUBCLK_HIST);  in hist_enable()
151 		isp_reg_clr(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_PCR,  in hist_enable()
153 		omap3isp_subclk_disable(hist->isp, OMAP3_ISP_SUBCLK_HIST);  in hist_enable()
157 static int hist_busy(struct ispstat *hist)  in hist_busy()  argument
159 	return isp_reg_readl(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_PCR)  in hist_busy()
165 	struct ispstat *hist = data;  in hist_dma_cb()  local
169 	isp_reg_clr(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_CNT,  in hist_dma_cb()
172 	omap3isp_stat_dma_isr(hist);  in hist_dma_cb()
173 	if (hist->state != ISPSTAT_DISABLED)  in hist_dma_cb()
174 		omap3isp_hist_dma_done(hist->isp);  in hist_dma_cb()
177 static int hist_buf_dma(struct ispstat *hist)  in hist_buf_dma()  argument
179 	dma_addr_t dma_addr = hist->active_buf->dma_addr;  in hist_buf_dma()
186 		dev_dbg(hist->isp->dev, "hist: invalid DMA buffer address\n");  in hist_buf_dma()
190 	isp_reg_writel(hist->isp, 0, OMAP3_ISP_IOMEM_HIST, ISPHIST_ADDR);  in hist_buf_dma()
191 	isp_reg_set(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_CNT,  in hist_buf_dma()
193 	omap3isp_flush(hist->isp);  in hist_buf_dma()
196 	cfg.src_addr = hist->isp->mmio_hist_base_phys + ISPHIST_DATA;  in hist_buf_dma()
198 	cfg.src_maxburst = hist->buf_size / 4;  in hist_buf_dma()
200 	ret = dmaengine_slave_config(hist->dma_ch, &cfg);  in hist_buf_dma()
202 		dev_dbg(hist->isp->dev,  in hist_buf_dma()
207 	tx = dmaengine_prep_slave_single(hist->dma_ch, dma_addr,  in hist_buf_dma()
208 					 hist->buf_size, DMA_DEV_TO_MEM,  in hist_buf_dma()
211 		dev_dbg(hist->isp->dev,  in hist_buf_dma()
217 	tx->callback_param = hist;  in hist_buf_dma()
220 		dev_dbg(hist->isp->dev, "hist: DMA submission failed\n");  in hist_buf_dma()
224 	dma_async_issue_pending(hist->dma_ch);  in hist_buf_dma()
229 	hist_reset_mem(hist);  in hist_buf_dma()
233 static int hist_buf_pio(struct ispstat *hist)  in hist_buf_pio()  argument
235 	struct isp_device *isp = hist->isp;  in hist_buf_pio()
236 	u32 *buf = hist->active_buf->virt_addr;  in hist_buf_pio()
241 		hist_reset_mem(hist);  in hist_buf_pio()
259 	for (i = hist->buf_size / 16; i > 0; i--) {  in hist_buf_pio()
265 	isp_reg_clr(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_CNT,  in hist_buf_pio()
274 static int hist_buf_process(struct ispstat *hist)  in hist_buf_process()  argument
276 	struct omap3isp_hist_config *user_cfg = hist->priv;  in hist_buf_process()
279 	if (atomic_read(&hist->buf_err) || hist->state != ISPSTAT_ENABLED) {  in hist_buf_process()
280 		hist_reset_mem(hist);  in hist_buf_process()
284 	if (--(hist->wait_acc_frames))  in hist_buf_process()
287 	if (hist->dma_ch)  in hist_buf_process()
288 		ret = hist_buf_dma(hist);  in hist_buf_process()
290 		ret = hist_buf_pio(hist);  in hist_buf_process()
292 	hist->wait_acc_frames = user_cfg->num_acc_frames;  in hist_buf_process()
308 static int hist_validate_params(struct ispstat *hist, void *new_conf)  in hist_validate_params()  argument
364 static int hist_comp_params(struct ispstat *hist,  in hist_comp_params()  argument
367 	struct omap3isp_hist_config *cur_cfg = hist->priv;  in hist_comp_params()
408 static void hist_set_params(struct ispstat *hist, void *new_conf)  in hist_set_params()  argument
411 	struct omap3isp_hist_config *cur_cfg = hist->priv;  in hist_set_params()
413 	if (!hist->configured || hist_comp_params(hist, user_cfg)) {  in hist_set_params()
417 		hist->inc_config++;  in hist_set_params()
418 		hist->update = 1;  in hist_set_params()
478 	struct ispstat *hist = &isp->isp_hist;  in omap3isp_hist_init()  local
486 	hist->isp = isp;  in omap3isp_hist_init()
502 		hist->dma_ch = dma_request_slave_channel_compat(mask,  in omap3isp_hist_init()
504 		if (!hist->dma_ch)  in omap3isp_hist_init()
509 				dma_chan_name(hist->dma_ch));  in omap3isp_hist_init()
512 	hist->ops = &hist_ops;  in omap3isp_hist_init()
513 	hist->priv = hist_cfg;  in omap3isp_hist_init()
514 	hist->event_type = V4L2_EVENT_OMAP3ISP_HIST;  in omap3isp_hist_init()
516 	ret = omap3isp_stat_init(hist, "histogram", &hist_subdev_ops);  in omap3isp_hist_init()
518 		if (hist->dma_ch)  in omap3isp_hist_init()
519 			dma_release_channel(hist->dma_ch);  in omap3isp_hist_init()
530 	struct ispstat *hist = &isp->isp_hist;  in omap3isp_hist_cleanup()  local
532 	if (hist->dma_ch)  in omap3isp_hist_cleanup()
533 		dma_release_channel(hist->dma_ch);  in omap3isp_hist_cleanup()
535 	omap3isp_stat_cleanup(hist);  in omap3isp_hist_cleanup()