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-rw-r--r--drivers/media/video/omap3isp/isphist.c518
1 files changed, 0 insertions, 518 deletions
diff --git a/drivers/media/video/omap3isp/isphist.c b/drivers/media/video/omap3isp/isphist.c
deleted file mode 100644
index d1a8dee5e1c..00000000000
--- a/drivers/media/video/omap3isp/isphist.c
+++ /dev/null
@@ -1,518 +0,0 @@
-/*
- * 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>
- *
- * 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 <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/device.h>
-
-#include "isp.h"
-#include "ispreg.h"
-#include "isphist.h"
-
-#define HIST_CONFIG_DMA 1
-
-#define HIST_USING_DMA(hist) ((hist)->dma_ch >= 0)
-
-/*
- * 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;
-}
-
-static void hist_dma_config(struct ispstat *hist)
-{
- hist->dma_config.data_type = OMAP_DMA_DATA_TYPE_S32;
- hist->dma_config.sync_mode = OMAP_DMA_SYNC_ELEMENT;
- hist->dma_config.frame_count = 1;
- hist->dma_config.src_amode = OMAP_DMA_AMODE_CONSTANT;
- hist->dma_config.src_start = OMAP3ISP_HIST_REG_BASE + ISPHIST_DATA;
- hist->dma_config.dst_amode = OMAP_DMA_AMODE_POST_INC;
- hist->dma_config.src_or_dst_synch = OMAP_DMA_SRC_SYNC;
-}
-
-/*
- * 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;
- reg_hor[c] = conf->region[c].h_end <<
- ISPHIST_REG_END_SHIFT;
- reg_ver[c] = conf->region[c].v_start <<
- ISPHIST_REG_START_SHIFT;
- reg_ver[c] = 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(int lch, u16 ch_status, void *data)
-{
- struct ispstat *hist = data;
-
- if (ch_status & ~OMAP_DMA_BLOCK_IRQ) {
- dev_dbg(hist->isp->dev, "hist: DMA error. status = 0x%04x\n",
- ch_status);
- omap_stop_dma(lch);
- hist_reset_mem(hist);
- atomic_set(&hist->buf_err, 1);
- }
- 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;
-
- if (unlikely(!dma_addr)) {
- dev_dbg(hist->isp->dev, "hist: invalid DMA buffer address\n");
- hist_reset_mem(hist);
- return STAT_NO_BUF;
- }
-
- 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);
- hist->dma_config.dst_start = dma_addr;
- hist->dma_config.elem_count = hist->buf_size / sizeof(u32);
- omap_set_dma_params(hist->dma_ch, &hist->dma_config);
-
- omap_start_dma(hist->dma_ch);
-
- return STAT_BUF_WAITING_DMA;
-}
-
-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_USING_DMA(hist))
- 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.
- * @user_cfg: 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 enoght */
- 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_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 = -1;
-
- hist_cfg = kzalloc(sizeof(*hist_cfg), GFP_KERNEL);
- if (hist_cfg == NULL)
- return -ENOMEM;
-
- memset(hist, 0, sizeof(*hist));
- if (HIST_CONFIG_DMA)
- ret = omap_request_dma(OMAP24XX_DMA_NO_DEVICE, "DMA_ISP_HIST",
- hist_dma_cb, hist, &hist->dma_ch);
- if (ret) {
- if (HIST_CONFIG_DMA)
- dev_warn(isp->dev, "hist: DMA request channel failed. "
- "Using PIO only.\n");
- hist->dma_ch = -1;
- } else {
- dev_dbg(isp->dev, "hist: DMA channel = %d\n", hist->dma_ch);
- hist_dma_config(hist);
- omap_enable_dma_irq(hist->dma_ch, OMAP_DMA_BLOCK_IRQ);
- }
-
- hist->ops = &hist_ops;
- hist->priv = hist_cfg;
- hist->event_type = V4L2_EVENT_OMAP3ISP_HIST;
- hist->isp = isp;
-
- ret = omap3isp_stat_init(hist, "histogram", &hist_subdev_ops);
- if (ret) {
- kfree(hist_cfg);
- if (HIST_USING_DMA(hist))
- omap_free_dma(hist->dma_ch);
- }
-
- return ret;
-}
-
-/*
- * omap3isp_hist_cleanup - Module cleanup.
- */
-void omap3isp_hist_cleanup(struct isp_device *isp)
-{
- if (HIST_USING_DMA(&isp->isp_hist))
- omap_free_dma(isp->isp_hist.dma_ch);
- kfree(isp->isp_hist.priv);
- omap3isp_stat_cleanup(&isp->isp_hist);
-}
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