522 lines
13 KiB
C
522 lines
13 KiB
C
/*
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* Copyright 2004-2014 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_prp_vf_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/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/module.h>
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#include <mach/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 buffer_num;
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static int buffer_ready;
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static struct ipu_soc *disp_ipu;
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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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* Function definitions
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*/
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/*!
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* SDC V-Sync 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 prpvf_sdc_vsync_callback(int irq, void *dev_id)
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{
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cam_data *cam = dev_id;
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if (buffer_ready > 0) {
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ipu_select_buffer(cam->ipu, MEM_ROT_VF_MEM,
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IPU_OUTPUT_BUFFER, 0);
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buffer_ready--;
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}
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return IRQ_HANDLED;
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}
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/*!
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* VF EOF 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 prpvf_vf_eof_callback(int irq, void *dev_id)
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{
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cam_data *cam = dev_id;
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pr_debug("buffer_ready %d buffer_num %d\n", buffer_ready, buffer_num);
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ipu_select_buffer(cam->ipu, MEM_ROT_VF_MEM,
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IPU_INPUT_BUFFER, buffer_num);
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buffer_num = (buffer_num == 0) ? 1 : 0;
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ipu_select_buffer(cam->ipu, CSI_PRP_VF_MEM,
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IPU_OUTPUT_BUFFER, buffer_num);
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buffer_ready++;
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return IRQ_HANDLED;
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}
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/*!
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* prpvf_start - start the vf 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 prpvf_start(void *private)
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{
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cam_data *cam = (cam_data *) private;
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ipu_channel_params_t vf;
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u32 format;
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u32 offset;
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u32 bpp, size = 3;
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int err = 0;
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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 "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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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, size = 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, size = 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, size = 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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size * 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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memset(&vf, 0, sizeof(ipu_channel_params_t));
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ipu_csi_get_window_size(cam->ipu, &vf.csi_prp_vf_mem.in_width,
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&vf.csi_prp_vf_mem.in_height, cam->csi);
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vf.csi_prp_vf_mem.in_pixel_fmt = IPU_PIX_FMT_UYVY;
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vf.csi_prp_vf_mem.out_width = cam->win.w.width;
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vf.csi_prp_vf_mem.out_height = cam->win.w.height;
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vf.csi_prp_vf_mem.csi = cam->csi;
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if (cam->vf_rotation >= IPU_ROTATE_90_RIGHT) {
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vf.csi_prp_vf_mem.out_width = cam->win.w.height;
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vf.csi_prp_vf_mem.out_height = cam->win.w.width;
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}
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vf.csi_prp_vf_mem.out_pixel_fmt = format;
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size = cam->win.w.width * cam->win.w.height * size;
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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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vf.csi_prp_vf_mem.mipi_en = true;
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vf.csi_prp_vf_mem.mipi_vc =
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mipi_csi2_get_virtual_channel(mipi_csi2_info);
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vf.csi_prp_vf_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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vf.csi_prp_vf_mem.mipi_en = false;
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vf.csi_prp_vf_mem.mipi_vc = 0;
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vf.csi_prp_vf_mem.mipi_id = 0;
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}
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} else {
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vf.csi_prp_vf_mem.mipi_en = false;
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vf.csi_prp_vf_mem.mipi_vc = 0;
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vf.csi_prp_vf_mem.mipi_id = 0;
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}
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}
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#endif
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err = ipu_init_channel(cam->ipu, CSI_PRP_VF_MEM, &vf);
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if (err != 0)
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goto out_4;
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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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}
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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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}
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cam->vf_bufs_size[0] = PAGE_ALIGN(size);
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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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&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_3;
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}
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cam->vf_bufs_size[1] = PAGE_ALIGN(size);
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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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&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_3;
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}
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err = ipu_init_channel_buffer(cam->ipu, CSI_PRP_VF_MEM,
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IPU_OUTPUT_BUFFER,
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format, vf.csi_prp_vf_mem.out_width,
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vf.csi_prp_vf_mem.out_height,
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vf.csi_prp_vf_mem.out_width,
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IPU_ROTATE_NONE,
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cam->vf_bufs[0],
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cam->vf_bufs[1],
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0, 0, 0);
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if (err != 0) {
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printk(KERN_ERR "Error initializing CSI_PRP_VF_MEM\n");
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goto out_3;
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}
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err = ipu_init_channel(cam->ipu, MEM_ROT_VF_MEM, NULL);
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if (err != 0) {
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printk(KERN_ERR "Error MEM_ROT_VF_MEM channel\n");
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goto out_3;
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}
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err = ipu_init_channel_buffer(cam->ipu, MEM_ROT_VF_MEM,
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IPU_INPUT_BUFFER,
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format, vf.csi_prp_vf_mem.out_width,
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vf.csi_prp_vf_mem.out_height,
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vf.csi_prp_vf_mem.out_width,
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cam->vf_rotation,
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cam->vf_bufs[0],
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cam->vf_bufs[1],
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0, 0, 0);
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if (err != 0) {
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printk(KERN_ERR "Error MEM_ROT_VF_MEM input buffer\n");
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goto out_2;
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}
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if (cam->vf_rotation >= IPU_ROTATE_90_RIGHT) {
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err = ipu_init_channel_buffer(cam->ipu, MEM_ROT_VF_MEM,
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IPU_OUTPUT_BUFFER,
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format,
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vf.csi_prp_vf_mem.out_height,
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vf.csi_prp_vf_mem.out_width,
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cam->overlay_fb->var.xres * bpp,
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IPU_ROTATE_NONE,
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offset, 0, 0, 0, 0);
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if (err != 0) {
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printk(KERN_ERR "Error MEM_ROT_VF_MEM output buffer\n");
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goto out_2;
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}
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} else {
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err = ipu_init_channel_buffer(cam->ipu, MEM_ROT_VF_MEM,
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IPU_OUTPUT_BUFFER,
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format,
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vf.csi_prp_vf_mem.out_width,
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vf.csi_prp_vf_mem.out_height,
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cam->overlay_fb->var.xres * bpp,
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IPU_ROTATE_NONE,
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offset, 0, 0, 0, 0);
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if (err != 0) {
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printk(KERN_ERR "Error MEM_ROT_VF_MEM output buffer\n");
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goto out_2;
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}
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}
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ipu_clear_irq(cam->ipu, IPU_IRQ_PRP_VF_OUT_EOF);
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err = ipu_request_irq(cam->ipu, IPU_IRQ_PRP_VF_OUT_EOF,
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prpvf_vf_eof_callback,
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0, "Mxc Camera", cam);
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if (err != 0) {
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printk(KERN_ERR
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"Error registering IPU_IRQ_PRP_VF_OUT_EOF irq.\n");
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goto out_2;
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}
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ipu_clear_irq(disp_ipu, IPU_IRQ_BG_SF_END);
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err = ipu_request_irq(disp_ipu, IPU_IRQ_BG_SF_END,
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prpvf_sdc_vsync_callback,
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0, "Mxc Camera", cam);
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if (err != 0) {
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printk(KERN_ERR "Error registering IPU_IRQ_BG_SF_END irq.\n");
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goto out_1;
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}
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ipu_enable_channel(cam->ipu, CSI_PRP_VF_MEM);
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ipu_enable_channel(cam->ipu, MEM_ROT_VF_MEM);
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buffer_num = 0;
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buffer_ready = 0;
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ipu_select_buffer(cam->ipu, CSI_PRP_VF_MEM, IPU_OUTPUT_BUFFER, 0);
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cam->overlay_active = true;
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return err;
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out_1:
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ipu_free_irq(cam->ipu, IPU_IRQ_PRP_VF_OUT_EOF, NULL);
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out_2:
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ipu_uninit_channel(cam->ipu, MEM_ROT_VF_MEM);
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out_3:
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ipu_uninit_channel(cam->ipu, CSI_PRP_VF_MEM);
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out_4:
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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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return err;
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}
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/*!
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* prpvf_stop - stop the vf 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 prpvf_stop(void *private)
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{
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cam_data *cam = (cam_data *) private;
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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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ipu_free_irq(disp_ipu, IPU_IRQ_BG_SF_END, cam);
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ipu_disable_channel(cam->ipu, CSI_PRP_VF_MEM, true);
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ipu_disable_channel(cam->ipu, MEM_ROT_VF_MEM, true);
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ipu_uninit_channel(cam->ipu, CSI_PRP_VF_MEM);
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ipu_uninit_channel(cam->ipu, MEM_ROT_VF_MEM);
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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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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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buffer_num = 0;
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buffer_ready = 0;
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cam->overlay_active = false;
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return 0;
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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 prp_vf_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
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*/
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static int prp_vf_disable_csi(void *private)
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{
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cam_data *cam = (cam_data *) private;
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/* free csi eof irq firstly.
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* when disable csi, wait for idmac eof.
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* it requests eof irq again */
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ipu_free_irq(cam->ipu, IPU_IRQ_PRP_VF_OUT_EOF, cam);
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return ipu_disable_csi(cam->ipu, cam->csi);
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}
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/*!
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* function to select PRP-VF as the working path
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*
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* @param private cam_data * mxc v4l2 main structure
|
|
*
|
|
* @return status
|
|
*/
|
|
int prp_vf_sdc_select_bg(void *private)
|
|
{
|
|
cam_data *cam = (cam_data *) private;
|
|
|
|
if (cam) {
|
|
cam->vf_start_sdc = prpvf_start;
|
|
cam->vf_stop_sdc = prpvf_stop;
|
|
cam->vf_enable_csi = prp_vf_enable_csi;
|
|
cam->vf_disable_csi = prp_vf_disable_csi;
|
|
cam->overlay_active = false;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(prp_vf_sdc_select_bg);
|
|
|
|
/*!
|
|
* function to de-select PRP-VF as the working path
|
|
*
|
|
* @param private cam_data * mxc v4l2 main structure
|
|
*
|
|
* @return status
|
|
*/
|
|
int prp_vf_sdc_deselect_bg(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(prp_vf_sdc_deselect_bg);
|
|
|
|
/*!
|
|
* Init viewfinder task.
|
|
*
|
|
* @return Error code indicating success or failure
|
|
*/
|
|
__init int prp_vf_sdc_init_bg(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*!
|
|
* Deinit viewfinder task.
|
|
*
|
|
* @return Error code indicating success or failure
|
|
*/
|
|
void __exit prp_vf_sdc_exit_bg(void)
|
|
{
|
|
}
|
|
|
|
module_init(prp_vf_sdc_init_bg);
|
|
module_exit(prp_vf_sdc_exit_bg);
|
|
|
|
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
|
|
MODULE_DESCRIPTION("IPU PRP VF SDC Backgroud Driver");
|
|
MODULE_LICENSE("GPL");
|