media: platform: rename omap3isp/ to ti/omap3isp/

As the end goal is to have platform drivers split by vendor,
rename omap3isp/ to ti/omap3isp/.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

1 files changed, 0 insertions, 540 deletions

diff --git a/drivers/media/platform/omap3isp/isphist.c b/drivers/media/platform/omap3isp/isphist.c
deleted file mode 100644
index 0ef78aace6da..000000000000
--- a/drivers/media/platform/omap3isp/isphist.c
+++ /dev/null
@@ -1,540 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * isphist.c
- *
- * TI OMAP3 ISP - Histogram module
- *
- * Copyright (C) 2010 Nokia Corporation
- * Copyright (C) 2009 Texas Instruments, Inc.
- *
- * Contacts: David Cohen <dacohen@gmail.com>
- *	     Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- *	     Sakari Ailus <sakari.ailus@iki.fi>
- */
-
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/dmaengine.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-
-#include "isp.h"
-#include "ispreg.h"
-#include "isphist.h"
-
-#define HIST_CONFIG_DMA	1
-
-/*
- * hist_reset_mem - clear Histogram memory before start stats engine.
- */
-static void hist_reset_mem(struct ispstat *hist)
-{
-	struct isp_device *isp = hist->isp;
-	struct omap3isp_hist_config *conf = hist->priv;
-	unsigned int i;
-
-	isp_reg_writel(isp, 0, OMAP3_ISP_IOMEM_HIST, ISPHIST_ADDR);
-
-	/*
-	 * By setting it, the histogram internal buffer is being cleared at the
-	 * same time it's being read. This bit must be cleared afterwards.
-	 */
-	isp_reg_set(isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_CNT, ISPHIST_CNT_CLEAR);
-
-	/*
-	 * We'll clear 4 words at each iteration for optimization. It avoids
-	 * 3/4 of the jumps. We also know HIST_MEM_SIZE is divisible by 4.
-	 */
-	for (i = OMAP3ISP_HIST_MEM_SIZE / 4; i > 0; i--) {
-		isp_reg_readl(isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_DATA);
-		isp_reg_readl(isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_DATA);
-		isp_reg_readl(isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_DATA);
-		isp_reg_readl(isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_DATA);
-	}
-	isp_reg_clr(isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_CNT, ISPHIST_CNT_CLEAR);
-
-	hist->wait_acc_frames = conf->num_acc_frames;
-}
-
-/*
- * hist_setup_regs - Helper function to update Histogram registers.
- */
-static void hist_setup_regs(struct ispstat *hist, void *priv)
-{
-	struct isp_device *isp = hist->isp;
-	struct omap3isp_hist_config *conf = priv;
-	int c;
-	u32 cnt;
-	u32 wb_gain;
-	u32 reg_hor[OMAP3ISP_HIST_MAX_REGIONS];
-	u32 reg_ver[OMAP3ISP_HIST_MAX_REGIONS];
-
-	if (!hist->update || hist->state == ISPSTAT_DISABLED ||
-	    hist->state == ISPSTAT_DISABLING)
-		return;
-
-	cnt = conf->cfa << ISPHIST_CNT_CFA_SHIFT;
-
-	wb_gain = conf->wg[0] << ISPHIST_WB_GAIN_WG00_SHIFT;
-	wb_gain |= conf->wg[1] << ISPHIST_WB_GAIN_WG01_SHIFT;
-	wb_gain |= conf->wg[2] << ISPHIST_WB_GAIN_WG02_SHIFT;
-	if (conf->cfa == OMAP3ISP_HIST_CFA_BAYER)
-		wb_gain |= conf->wg[3] << ISPHIST_WB_GAIN_WG03_SHIFT;
-
-	/* Regions size and position */
-	for (c = 0; c < OMAP3ISP_HIST_MAX_REGIONS; c++) {
-		if (c < conf->num_regions) {
-			reg_hor[c] = (conf->region[c].h_start <<
-				     ISPHIST_REG_START_SHIFT)
-				   | (conf->region[c].h_end <<
-				     ISPHIST_REG_END_SHIFT);
-			reg_ver[c] = (conf->region[c].v_start <<
-				     ISPHIST_REG_START_SHIFT)
-				   | (conf->region[c].v_end <<
-				     ISPHIST_REG_END_SHIFT);
-		} else {
-			reg_hor[c] = 0;
-			reg_ver[c] = 0;
-		}
-	}
-
-	cnt |= conf->hist_bins << ISPHIST_CNT_BINS_SHIFT;
-	switch (conf->hist_bins) {
-	case OMAP3ISP_HIST_BINS_256:
-		cnt |= (ISPHIST_IN_BIT_WIDTH_CCDC - 8) <<
-			ISPHIST_CNT_SHIFT_SHIFT;
-		break;
-	case OMAP3ISP_HIST_BINS_128:
-		cnt |= (ISPHIST_IN_BIT_WIDTH_CCDC - 7) <<
-			ISPHIST_CNT_SHIFT_SHIFT;
-		break;
-	case OMAP3ISP_HIST_BINS_64:
-		cnt |= (ISPHIST_IN_BIT_WIDTH_CCDC - 6) <<
-			ISPHIST_CNT_SHIFT_SHIFT;
-		break;
-	default: /* OMAP3ISP_HIST_BINS_32 */
-		cnt |= (ISPHIST_IN_BIT_WIDTH_CCDC - 5) <<
-			ISPHIST_CNT_SHIFT_SHIFT;
-		break;
-	}
-
-	hist_reset_mem(hist);
-
-	isp_reg_writel(isp, cnt, OMAP3_ISP_IOMEM_HIST, ISPHIST_CNT);
-	isp_reg_writel(isp, wb_gain,  OMAP3_ISP_IOMEM_HIST, ISPHIST_WB_GAIN);
-	isp_reg_writel(isp, reg_hor[0], OMAP3_ISP_IOMEM_HIST, ISPHIST_R0_HORZ);
-	isp_reg_writel(isp, reg_ver[0], OMAP3_ISP_IOMEM_HIST, ISPHIST_R0_VERT);
-	isp_reg_writel(isp, reg_hor[1], OMAP3_ISP_IOMEM_HIST, ISPHIST_R1_HORZ);
-	isp_reg_writel(isp, reg_ver[1], OMAP3_ISP_IOMEM_HIST, ISPHIST_R1_VERT);
-	isp_reg_writel(isp, reg_hor[2], OMAP3_ISP_IOMEM_HIST, ISPHIST_R2_HORZ);
-	isp_reg_writel(isp, reg_ver[2], OMAP3_ISP_IOMEM_HIST, ISPHIST_R2_VERT);
-	isp_reg_writel(isp, reg_hor[3], OMAP3_ISP_IOMEM_HIST, ISPHIST_R3_HORZ);
-	isp_reg_writel(isp, reg_ver[3], OMAP3_ISP_IOMEM_HIST, ISPHIST_R3_VERT);
-
-	hist->update = 0;
-	hist->config_counter += hist->inc_config;
-	hist->inc_config = 0;
-	hist->buf_size = conf->buf_size;
-}
-
-static void hist_enable(struct ispstat *hist, int enable)
-{
-	if (enable) {
-		isp_reg_set(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_PCR,
-			    ISPHIST_PCR_ENABLE);
-		omap3isp_subclk_enable(hist->isp, OMAP3_ISP_SUBCLK_HIST);
-	} else {
-		isp_reg_clr(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_PCR,
-			    ISPHIST_PCR_ENABLE);
-		omap3isp_subclk_disable(hist->isp, OMAP3_ISP_SUBCLK_HIST);
-	}
-}
-
-static int hist_busy(struct ispstat *hist)
-{
-	return isp_reg_readl(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_PCR)
-						& ISPHIST_PCR_BUSY;
-}
-
-static void hist_dma_cb(void *data)
-{
-	struct ispstat *hist = data;
-
-	/* FIXME: The DMA engine API can't report transfer errors :-/ */
-
-	isp_reg_clr(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_CNT,
-		    ISPHIST_CNT_CLEAR);
-
-	omap3isp_stat_dma_isr(hist);
-	if (hist->state != ISPSTAT_DISABLED)
-		omap3isp_hist_dma_done(hist->isp);
-}
-
-static int hist_buf_dma(struct ispstat *hist)
-{
-	dma_addr_t dma_addr = hist->active_buf->dma_addr;
-	struct dma_async_tx_descriptor *tx;
-	struct dma_slave_config cfg;
-	dma_cookie_t cookie;
-	int ret;
-
-	if (unlikely(!dma_addr)) {
-		dev_dbg(hist->isp->dev, "hist: invalid DMA buffer address\n");
-		goto error;
-	}
-
-	isp_reg_writel(hist->isp, 0, OMAP3_ISP_IOMEM_HIST, ISPHIST_ADDR);
-	isp_reg_set(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_CNT,
-		    ISPHIST_CNT_CLEAR);
-	omap3isp_flush(hist->isp);
-
-	memset(&cfg, 0, sizeof(cfg));
-	cfg.src_addr = hist->isp->mmio_hist_base_phys + ISPHIST_DATA;
-	cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-	cfg.src_maxburst = hist->buf_size / 4;
-
-	ret = dmaengine_slave_config(hist->dma_ch, &cfg);
-	if (ret < 0) {
-		dev_dbg(hist->isp->dev,
-			"hist: DMA slave configuration failed\n");
-		goto error;
-	}
-
-	tx = dmaengine_prep_slave_single(hist->dma_ch, dma_addr,
-					 hist->buf_size, DMA_DEV_TO_MEM,
-					 DMA_CTRL_ACK);
-	if (tx == NULL) {
-		dev_dbg(hist->isp->dev,
-			"hist: DMA slave preparation failed\n");
-		goto error;
-	}
-
-	tx->callback = hist_dma_cb;
-	tx->callback_param = hist;
-	cookie = tx->tx_submit(tx);
-	if (dma_submit_error(cookie)) {
-		dev_dbg(hist->isp->dev, "hist: DMA submission failed\n");
-		goto error;
-	}
-
-	dma_async_issue_pending(hist->dma_ch);
-
-	return STAT_BUF_WAITING_DMA;
-
-error:
-	hist_reset_mem(hist);
-	return STAT_NO_BUF;
-}
-
-static int hist_buf_pio(struct ispstat *hist)
-{
-	struct isp_device *isp = hist->isp;
-	u32 *buf = hist->active_buf->virt_addr;
-	unsigned int i;
-
-	if (!buf) {
-		dev_dbg(isp->dev, "hist: invalid PIO buffer address\n");
-		hist_reset_mem(hist);
-		return STAT_NO_BUF;
-	}
-
-	isp_reg_writel(isp, 0, OMAP3_ISP_IOMEM_HIST, ISPHIST_ADDR);
-
-	/*
-	 * By setting it, the histogram internal buffer is being cleared at the
-	 * same time it's being read. This bit must be cleared just after all
-	 * data is acquired.
-	 */
-	isp_reg_set(isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_CNT, ISPHIST_CNT_CLEAR);
-
-	/*
-	 * We'll read 4 times a 4-bytes-word at each iteration for
-	 * optimization. It avoids 3/4 of the jumps. We also know buf_size is
-	 * divisible by 16.
-	 */
-	for (i = hist->buf_size / 16; i > 0; i--) {
-		*buf++ = isp_reg_readl(isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_DATA);
-		*buf++ = isp_reg_readl(isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_DATA);
-		*buf++ = isp_reg_readl(isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_DATA);
-		*buf++ = isp_reg_readl(isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_DATA);
-	}
-	isp_reg_clr(hist->isp, OMAP3_ISP_IOMEM_HIST, ISPHIST_CNT,
-		    ISPHIST_CNT_CLEAR);
-
-	return STAT_BUF_DONE;
-}
-
-/*
- * hist_buf_process - Callback from ISP driver for HIST interrupt.
- */
-static int hist_buf_process(struct ispstat *hist)
-{
-	struct omap3isp_hist_config *user_cfg = hist->priv;
-	int ret;
-
-	if (atomic_read(&hist->buf_err) || hist->state != ISPSTAT_ENABLED) {
-		hist_reset_mem(hist);
-		return STAT_NO_BUF;
-	}
-
-	if (--(hist->wait_acc_frames))
-		return STAT_NO_BUF;
-
-	if (hist->dma_ch)
-		ret = hist_buf_dma(hist);
-	else
-		ret = hist_buf_pio(hist);
-
-	hist->wait_acc_frames = user_cfg->num_acc_frames;
-
-	return ret;
-}
-
-static u32 hist_get_buf_size(struct omap3isp_hist_config *conf)
-{
-	return OMAP3ISP_HIST_MEM_SIZE_BINS(conf->hist_bins) * conf->num_regions;
-}
-
-/*
- * hist_validate_params - Helper function to check user given params.
- * @new_conf: Pointer to user configuration structure.
- *
- * Returns 0 on success configuration.
- */
-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;
-
-	/* Regions size and position */
-
-	if ((user_cfg->num_regions < OMAP3ISP_HIST_MIN_REGIONS) ||
-	    (user_cfg->num_regions > OMAP3ISP_HIST_MAX_REGIONS))
-		return -EINVAL;
-
-	/* Regions */
-	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: /* 3 or 4 */
-		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's buf_size request wasn't enough */
-		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 int hist_comp_params(struct ispstat *hist,
-			    struct omap3isp_hist_config *user_cfg)
-{
-	struct omap3isp_hist_config *cur_cfg = hist->priv;
-	int c;
-
-	if (cur_cfg->cfa != user_cfg->cfa)
-		return 1;
-
-	if (cur_cfg->num_acc_frames != user_cfg->num_acc_frames)
-		return 1;
-
-	if (cur_cfg->hist_bins != user_cfg->hist_bins)
-		return 1;
-
-	for (c = 0; c < OMAP3ISP_HIST_MAX_WG; c++) {
-		if (c == 3 && user_cfg->cfa == OMAP3ISP_HIST_CFA_FOVEONX3)
-			break;
-		else if (cur_cfg->wg[c] != user_cfg->wg[c])
-			return 1;
-	}
-
-	if (cur_cfg->num_regions != user_cfg->num_regions)
-		return 1;
-
-	/* Regions */
-	for (c = 0; c < user_cfg->num_regions; c++) {
-		if (cur_cfg->region[c].h_start != user_cfg->region[c].h_start)
-			return 1;
-		if (cur_cfg->region[c].h_end != user_cfg->region[c].h_end)
-			return 1;
-		if (cur_cfg->region[c].v_start != user_cfg->region[c].v_start)
-			return 1;
-		if (cur_cfg->region[c].v_end != user_cfg->region[c].v_end)
-			return 1;
-	}
-
-	return 0;
-}
-
-/*
- * 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);
-
-	}
-}
-
-static long hist_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
-{
-	struct ispstat *stat = v4l2_get_subdevdata(sd);
-
-	switch (cmd) {
-	case VIDIOC_OMAP3ISP_HIST_CFG:
-		return omap3isp_stat_config(stat, arg);
-	case VIDIOC_OMAP3ISP_STAT_REQ:
-		return omap3isp_stat_request_statistics(stat, arg);
-	case VIDIOC_OMAP3ISP_STAT_REQ_TIME32:
-		return omap3isp_stat_request_statistics_time32(stat, arg);
-	case VIDIOC_OMAP3ISP_STAT_EN: {
-		int *en = arg;
-		return omap3isp_stat_enable(stat, !!*en);
-	}
-	}
-
-	return -ENOIOCTLCMD;
-
-}
-
-static const struct ispstat_ops hist_ops = {
-	.validate_params	= hist_validate_params,
-	.set_params		= hist_set_params,
-	.setup_regs		= hist_setup_regs,
-	.enable			= hist_enable,
-	.busy			= hist_busy,
-	.buf_process		= hist_buf_process,
-};
-
-static const struct v4l2_subdev_core_ops hist_subdev_core_ops = {
-	.ioctl = hist_ioctl,
-	.subscribe_event = omap3isp_stat_subscribe_event,
-	.unsubscribe_event = omap3isp_stat_unsubscribe_event,
-};
-
-static const struct v4l2_subdev_video_ops hist_subdev_video_ops = {
-	.s_stream = omap3isp_stat_s_stream,
-};
-
-static const struct v4l2_subdev_ops hist_subdev_ops = {
-	.core = &hist_subdev_core_ops,
-	.video = &hist_subdev_video_ops,
-};
-
-/*
- * omap3isp_hist_init - Module Initialization.
- */
-int omap3isp_hist_init(struct isp_device *isp)
-{
-	struct ispstat *hist = &isp->isp_hist;
-	struct omap3isp_hist_config *hist_cfg;
-	int ret;
-
-	hist_cfg = kzalloc(sizeof(*hist_cfg), GFP_KERNEL);
-	if (hist_cfg == NULL)
-		return -ENOMEM;
-
-	hist->isp = isp;
-
-	if (HIST_CONFIG_DMA) {
-		dma_cap_mask_t mask;
-
-		/*
-		 * We need slave capable channel without DMA request line for
-		 * reading out the data.
-		 * For this we can use dma_request_chan_by_mask() as we are
-		 * happy with any channel as long as it is capable of slave
-		 * configuration.
-		 */
-		dma_cap_zero(mask);
-		dma_cap_set(DMA_SLAVE, mask);
-		hist->dma_ch = dma_request_chan_by_mask(&mask);
-		if (IS_ERR(hist->dma_ch)) {
-			ret = PTR_ERR(hist->dma_ch);
-			if (ret == -EPROBE_DEFER)
-				goto err;
-
-			hist->dma_ch = NULL;
-			dev_warn(isp->dev,
-				 "hist: DMA channel request failed, using PIO\n");
-		} else {
-			dev_dbg(isp->dev, "hist: using DMA channel %s\n",
-				dma_chan_name(hist->dma_ch));
-		}
-	}
-
-	hist->ops = &hist_ops;
-	hist->priv = hist_cfg;
-	hist->event_type = V4L2_EVENT_OMAP3ISP_HIST;
-
-	ret = omap3isp_stat_init(hist, "histogram", &hist_subdev_ops);
-
-err:
-	if (ret) {
-		if (!IS_ERR_OR_NULL(hist->dma_ch))
-			dma_release_channel(hist->dma_ch);
-		kfree(hist_cfg);
-	}
-
-	return ret;
-}
-
-/*
- * omap3isp_hist_cleanup - Module cleanup.
- */
-void omap3isp_hist_cleanup(struct isp_device *isp)
-{
-	struct ispstat *hist = &isp->isp_hist;
-
-	if (hist->dma_ch)
-		dma_release_channel(hist->dma_ch);
-
-	omap3isp_stat_cleanup(hist);
-}