553 lines
13 KiB
C
553 lines
13 KiB
C
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/*
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* Copyright 2004-2015 Freescale Semiconductor, Inc. All Rights Reserved.
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*/
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/*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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/*!
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* @file ipu_bg_overlay_sdc_bg.c
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*
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* @brief IPU Use case for PRP-VF back-ground
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*
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* @ingroup IPU
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*/
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#include <linux/module.h>
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#include <linux/dma-mapping.h>
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#include <linux/fb.h>
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#include <linux/ipu.h>
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#include <linux/mipi_csi2.h>
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#include "mxc_v4l2_capture.h"
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#include "ipu_prp_sw.h"
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static int csi_buffer_num;
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static u32 bpp, csi_mem_bufsize = 3;
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static u32 out_format;
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static struct ipu_soc *disp_ipu;
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static u32 offset;
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static void csi_buf_work_func(struct work_struct *work)
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{
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int err = 0;
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cam_data *cam =
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container_of(work, struct _cam_data, csi_work_struct);
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struct ipu_task task;
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memset(&task, 0, sizeof(task));
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if (csi_buffer_num)
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task.input.paddr = cam->vf_bufs[0];
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else
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task.input.paddr = cam->vf_bufs[1];
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task.input.width = cam->crop_current.width;
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task.input.height = cam->crop_current.height;
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task.input.format = IPU_PIX_FMT_UYVY;
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task.output.paddr = offset;
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task.output.width = cam->overlay_fb->var.xres;
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task.output.height = cam->overlay_fb->var.yres;
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task.output.format = out_format;
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task.output.rotate = cam->rotation;
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task.output.crop.pos.x = cam->win.w.left;
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task.output.crop.pos.y = cam->win.w.top;
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if (cam->win.w.width > 1024 || cam->win.w.height > 1024) {
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task.output.crop.w = cam->overlay_fb->var.xres;
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task.output.crop.h = cam->overlay_fb->var.yres;
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} else {
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task.output.crop.w = cam->win.w.width;
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task.output.crop.h = cam->win.w.height;
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}
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again:
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err = ipu_check_task(&task);
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if (err != IPU_CHECK_OK) {
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if (err > IPU_CHECK_ERR_MIN) {
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if (err == IPU_CHECK_ERR_SPLIT_INPUTW_OVER) {
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task.input.crop.w -= 8;
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goto again;
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}
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if (err == IPU_CHECK_ERR_SPLIT_INPUTH_OVER) {
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task.input.crop.h -= 8;
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goto again;
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}
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if (err == IPU_CHECK_ERR_SPLIT_OUTPUTW_OVER) {
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task.output.width -= 8;
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task.output.crop.w = task.output.width;
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goto again;
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}
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if (err == IPU_CHECK_ERR_SPLIT_OUTPUTH_OVER) {
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task.output.height -= 8;
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task.output.crop.h = task.output.height;
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goto again;
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}
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printk(KERN_ERR "check ipu taks fail\n");
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return;
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}
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printk(KERN_ERR "check ipu taks fail\n");
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return;
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}
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err = ipu_queue_task(&task);
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if (err < 0)
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printk(KERN_ERR "queue ipu task error\n");
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}
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static void get_disp_ipu(cam_data *cam)
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{
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if (cam->output > 2)
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disp_ipu = ipu_get_soc(1); /* using DISP4 */
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else
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disp_ipu = ipu_get_soc(0);
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}
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/*!
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* csi ENC callback function.
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*
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* @param irq int irq line
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* @param dev_id void * device id
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*
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* @return status IRQ_HANDLED for handled
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*/
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static irqreturn_t csi_enc_callback(int irq, void *dev_id)
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{
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cam_data *cam = (cam_data *) dev_id;
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ipu_channel_t chan = (irq == IPU_IRQ_CSI0_OUT_EOF) ?
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CSI_MEM0 : CSI_MEM1;
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ipu_select_buffer(cam->ipu, chan,
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IPU_OUTPUT_BUFFER, csi_buffer_num);
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schedule_work(&cam->csi_work_struct);
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csi_buffer_num = (csi_buffer_num == 0) ? 1 : 0;
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return IRQ_HANDLED;
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}
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static int csi_enc_setup(cam_data *cam)
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{
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ipu_channel_params_t params;
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u32 pixel_fmt;
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int err = 0, sensor_protocol = 0;
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ipu_channel_t chan = (cam->csi == 0) ? CSI_MEM0 : CSI_MEM1;
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#ifdef CONFIG_MXC_MIPI_CSI2
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void *mipi_csi2_info;
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int ipu_id;
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int csi_id;
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#endif
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if (!cam) {
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printk(KERN_ERR "cam private is NULL\n");
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return -ENXIO;
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}
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memset(¶ms, 0, sizeof(ipu_channel_params_t));
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params.csi_mem.csi = cam->csi;
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sensor_protocol = ipu_csi_get_sensor_protocol(cam->ipu, cam->csi);
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switch (sensor_protocol) {
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case IPU_CSI_CLK_MODE_GATED_CLK:
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case IPU_CSI_CLK_MODE_NONGATED_CLK:
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case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE:
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case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR:
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case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR:
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params.csi_mem.interlaced = false;
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break;
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case IPU_CSI_CLK_MODE_CCIR656_INTERLACED:
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case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR:
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case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR:
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params.csi_mem.interlaced = true;
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break;
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default:
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printk(KERN_ERR "sensor protocol unsupported\n");
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return -EINVAL;
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}
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#ifdef CONFIG_MXC_MIPI_CSI2
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mipi_csi2_info = mipi_csi2_get_info();
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if (mipi_csi2_info) {
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if (mipi_csi2_get_status(mipi_csi2_info)) {
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ipu_id = mipi_csi2_get_bind_ipu(mipi_csi2_info);
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csi_id = mipi_csi2_get_bind_csi(mipi_csi2_info);
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if (cam->ipu == ipu_get_soc(ipu_id)
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&& cam->csi == csi_id) {
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params.csi_mem.mipi_en = true;
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params.csi_mem.mipi_vc =
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mipi_csi2_get_virtual_channel(mipi_csi2_info);
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params.csi_mem.mipi_id =
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mipi_csi2_get_datatype(mipi_csi2_info);
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mipi_csi2_pixelclk_enable(mipi_csi2_info);
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} else {
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params.csi_mem.mipi_en = false;
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params.csi_mem.mipi_vc = 0;
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params.csi_mem.mipi_id = 0;
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}
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} else {
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params.csi_mem.mipi_en = false;
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params.csi_mem.mipi_vc = 0;
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params.csi_mem.mipi_id = 0;
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}
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}
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#endif
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if (cam->vf_bufs_vaddr[0]) {
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dma_free_coherent(0, cam->vf_bufs_size[0],
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cam->vf_bufs_vaddr[0],
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(dma_addr_t) cam->vf_bufs[0]);
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}
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if (cam->vf_bufs_vaddr[1]) {
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dma_free_coherent(0, cam->vf_bufs_size[1],
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cam->vf_bufs_vaddr[1],
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(dma_addr_t) cam->vf_bufs[1]);
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}
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csi_mem_bufsize =
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cam->crop_current.width * cam->crop_current.height * 2;
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cam->vf_bufs_size[0] = PAGE_ALIGN(csi_mem_bufsize);
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cam->vf_bufs_vaddr[0] = (void *)dma_alloc_coherent(0,
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cam->vf_bufs_size[0],
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(dma_addr_t *) &
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cam->vf_bufs[0],
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GFP_DMA |
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GFP_KERNEL);
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if (cam->vf_bufs_vaddr[0] == NULL) {
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printk(KERN_ERR "Error to allocate vf buffer\n");
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err = -ENOMEM;
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goto out_2;
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}
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cam->vf_bufs_size[1] = PAGE_ALIGN(csi_mem_bufsize);
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cam->vf_bufs_vaddr[1] = (void *)dma_alloc_coherent(0,
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cam->vf_bufs_size[1],
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(dma_addr_t *) &
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cam->vf_bufs[1],
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GFP_DMA |
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GFP_KERNEL);
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if (cam->vf_bufs_vaddr[1] == NULL) {
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printk(KERN_ERR "Error to allocate vf buffer\n");
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err = -ENOMEM;
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goto out_1;
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}
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pr_debug("vf_bufs %x %x\n", cam->vf_bufs[0], cam->vf_bufs[1]);
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err = ipu_init_channel(cam->ipu, chan, ¶ms);
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if (err != 0) {
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printk(KERN_ERR "ipu_init_channel %d\n", err);
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goto out_1;
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}
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pixel_fmt = IPU_PIX_FMT_UYVY;
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err = ipu_init_channel_buffer(
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cam->ipu, chan, IPU_OUTPUT_BUFFER, pixel_fmt,
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cam->crop_current.width, cam->crop_current.height,
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cam->crop_current.width, IPU_ROTATE_NONE,
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cam->vf_bufs[0], cam->vf_bufs[1], 0,
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cam->offset.u_offset, cam->offset.u_offset);
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if (err != 0) {
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printk(KERN_ERR "CSI_MEM output buffer\n");
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goto out_1;
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}
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err = ipu_enable_channel(cam->ipu, chan);
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if (err < 0) {
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printk(KERN_ERR "ipu_enable_channel CSI_MEM\n");
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goto out_1;
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}
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csi_buffer_num = 0;
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ipu_select_buffer(cam->ipu, chan, IPU_OUTPUT_BUFFER, 0);
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ipu_select_buffer(cam->ipu, chan, IPU_OUTPUT_BUFFER, 1);
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return err;
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out_1:
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if (cam->vf_bufs_vaddr[0]) {
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dma_free_coherent(0, cam->vf_bufs_size[0],
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cam->vf_bufs_vaddr[0],
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(dma_addr_t) cam->vf_bufs[0]);
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cam->vf_bufs_vaddr[0] = NULL;
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cam->vf_bufs[0] = 0;
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}
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if (cam->vf_bufs_vaddr[1]) {
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dma_free_coherent(0, cam->vf_bufs_size[1],
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cam->vf_bufs_vaddr[1],
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(dma_addr_t) cam->vf_bufs[1]);
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cam->vf_bufs_vaddr[1] = NULL;
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cam->vf_bufs[1] = 0;
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}
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out_2:
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return err;
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}
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/*!
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* Enable encoder task
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* @param private struct cam_data * mxc capture instance
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*
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* @return status
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*/
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static int csi_enc_enabling_tasks(void *private)
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{
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cam_data *cam = (cam_data *) private;
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int err = 0;
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ipu_clear_irq(cam->ipu, IPU_IRQ_CSI0_OUT_EOF + cam->csi);
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err = ipu_request_irq(cam->ipu, IPU_IRQ_CSI0_OUT_EOF + cam->csi,
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csi_enc_callback, 0, "Mxc Camera", cam);
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if (err != 0) {
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printk(KERN_ERR "Error registering CSI_OUT_EOF irq\n");
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return err;
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}
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INIT_WORK(&cam->csi_work_struct, csi_buf_work_func);
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err = csi_enc_setup(cam);
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if (err != 0) {
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printk(KERN_ERR "csi_enc_setup %d\n", err);
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goto out1;
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}
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return err;
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out1:
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ipu_free_irq(cam->ipu, IPU_IRQ_CSI0_OUT_EOF + cam->csi, cam);
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return err;
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}
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/*!
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* bg_overlay_start - start the overlay task
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*
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* @param private cam_data * mxc v4l2 main structure
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*
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*/
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static int bg_overlay_start(void *private)
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{
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cam_data *cam = (cam_data *) private;
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int err = 0;
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if (!cam) {
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printk(KERN_ERR "private is NULL\n");
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return -EIO;
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}
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if (cam->overlay_active == true) {
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pr_debug("already start.\n");
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return 0;
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}
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get_disp_ipu(cam);
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out_format = cam->v4l2_fb.fmt.pixelformat;
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if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_BGR24) {
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bpp = 3, csi_mem_bufsize = 3;
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pr_info("BGR24\n");
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} else if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_RGB565) {
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bpp = 2, csi_mem_bufsize = 2;
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pr_info("RGB565\n");
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} else if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_BGR32) {
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bpp = 4, csi_mem_bufsize = 4;
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pr_info("BGR32\n");
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} else {
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printk(KERN_ERR
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"unsupported fix format from the framebuffer.\n");
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return -EINVAL;
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}
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offset = cam->v4l2_fb.fmt.bytesperline * cam->win.w.top +
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csi_mem_bufsize * cam->win.w.left;
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if (cam->v4l2_fb.base == 0)
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printk(KERN_ERR "invalid frame buffer address.\n");
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else
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offset += (u32) cam->v4l2_fb.base;
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csi_mem_bufsize = cam->win.w.width * cam->win.w.height
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* csi_mem_bufsize;
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err = csi_enc_enabling_tasks(cam);
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if (err != 0) {
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printk(KERN_ERR "Error csi enc enable fail\n");
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return err;
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}
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cam->overlay_active = true;
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return err;
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}
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/*!
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* bg_overlay_stop - stop the overlay task
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*
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* @param private cam_data * mxc v4l2 main structure
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*
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*/
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static int bg_overlay_stop(void *private)
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{
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int err = 0;
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cam_data *cam = (cam_data *) private;
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ipu_channel_t chan = (cam->csi == 0) ? CSI_MEM0 : CSI_MEM1;
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#ifdef CONFIG_MXC_MIPI_CSI2
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void *mipi_csi2_info;
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int ipu_id;
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int csi_id;
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#endif
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if (cam->overlay_active == false)
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return 0;
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err = ipu_disable_channel(cam->ipu, chan, true);
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ipu_uninit_channel(cam->ipu, chan);
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csi_buffer_num = 0;
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#ifdef CONFIG_MXC_MIPI_CSI2
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mipi_csi2_info = mipi_csi2_get_info();
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if (mipi_csi2_info) {
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if (mipi_csi2_get_status(mipi_csi2_info)) {
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ipu_id = mipi_csi2_get_bind_ipu(mipi_csi2_info);
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csi_id = mipi_csi2_get_bind_csi(mipi_csi2_info);
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if (cam->ipu == ipu_get_soc(ipu_id)
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&& cam->csi == csi_id)
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mipi_csi2_pixelclk_disable(mipi_csi2_info);
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}
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}
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#endif
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flush_work(&cam->csi_work_struct);
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cancel_work_sync(&cam->csi_work_struct);
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if (cam->vf_bufs_vaddr[0]) {
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dma_free_coherent(0, cam->vf_bufs_size[0],
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cam->vf_bufs_vaddr[0], cam->vf_bufs[0]);
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cam->vf_bufs_vaddr[0] = NULL;
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cam->vf_bufs[0] = 0;
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}
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if (cam->vf_bufs_vaddr[1]) {
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dma_free_coherent(0, cam->vf_bufs_size[1],
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cam->vf_bufs_vaddr[1], cam->vf_bufs[1]);
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cam->vf_bufs_vaddr[1] = NULL;
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cam->vf_bufs[1] = 0;
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}
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if (cam->rot_vf_bufs_vaddr[0]) {
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dma_free_coherent(0, cam->rot_vf_buf_size[0],
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cam->rot_vf_bufs_vaddr[0],
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cam->rot_vf_bufs[0]);
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cam->rot_vf_bufs_vaddr[0] = NULL;
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cam->rot_vf_bufs[0] = 0;
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}
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if (cam->rot_vf_bufs_vaddr[1]) {
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dma_free_coherent(0, cam->rot_vf_buf_size[1],
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cam->rot_vf_bufs_vaddr[1],
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cam->rot_vf_bufs[1]);
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cam->rot_vf_bufs_vaddr[1] = NULL;
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cam->rot_vf_bufs[1] = 0;
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}
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cam->overlay_active = false;
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return err;
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}
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/*!
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* Enable csi
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* @param private struct cam_data * mxc capture instance
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*
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* @return status
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*/
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static int bg_overlay_enable_csi(void *private)
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{
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cam_data *cam = (cam_data *) private;
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return ipu_enable_csi(cam->ipu, cam->csi);
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}
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/*!
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* Disable csi
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* @param private struct cam_data * mxc capture instance
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*
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* @return status
|
|
*/
|
|
static int bg_overlay_disable_csi(void *private)
|
|
{
|
|
cam_data *cam = (cam_data *) private;
|
|
|
|
/* free csi eof irq firstly.
|
|
* when disable csi, wait for idmac eof.
|
|
* it requests eof irq again */
|
|
ipu_free_irq(cam->ipu, IPU_IRQ_CSI0_OUT_EOF + cam->csi, cam);
|
|
|
|
return ipu_disable_csi(cam->ipu, cam->csi);
|
|
}
|
|
|
|
/*!
|
|
* function to select bg as the working path
|
|
*
|
|
* @param private cam_data * mxc v4l2 main structure
|
|
*
|
|
* @return status
|
|
*/
|
|
int bg_overlay_sdc_select(void *private)
|
|
{
|
|
cam_data *cam = (cam_data *) private;
|
|
|
|
if (cam) {
|
|
cam->vf_start_sdc = bg_overlay_start;
|
|
cam->vf_stop_sdc = bg_overlay_stop;
|
|
cam->vf_enable_csi = bg_overlay_enable_csi;
|
|
cam->vf_disable_csi = bg_overlay_disable_csi;
|
|
cam->overlay_active = false;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(bg_overlay_sdc_select);
|
|
|
|
/*!
|
|
* function to de-select bg as the working path
|
|
*
|
|
* @param private cam_data * mxc v4l2 main structure
|
|
*
|
|
* @return status
|
|
*/
|
|
int bg_overlay_sdc_deselect(void *private)
|
|
{
|
|
cam_data *cam = (cam_data *) private;
|
|
|
|
if (cam) {
|
|
cam->vf_start_sdc = NULL;
|
|
cam->vf_stop_sdc = NULL;
|
|
cam->vf_enable_csi = NULL;
|
|
cam->vf_disable_csi = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(bg_overlay_sdc_deselect);
|
|
|
|
/*!
|
|
* Init background overlay task.
|
|
*
|
|
* @return Error code indicating success or failure
|
|
*/
|
|
__init int bg_overlay_sdc_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*!
|
|
* Deinit background overlay task.
|
|
*
|
|
* @return Error code indicating success or failure
|
|
*/
|
|
void __exit bg_overlay_sdc_exit(void)
|
|
{
|
|
}
|
|
|
|
module_init(bg_overlay_sdc_init);
|
|
module_exit(bg_overlay_sdc_exit);
|
|
|
|
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
|
|
MODULE_DESCRIPTION("IPU PRP VF SDC Backgroud Driver");
|
|
MODULE_LICENSE("GPL");
|