639 lines
15 KiB
C
639 lines
15 KiB
C
/*
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* Copyright 2004-2015 Freescale Semiconductor, Inc. All Rights Reserved.
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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_foreground_sdc.c
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*
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* @brief IPU Use case for PRP-VF
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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/console.h>
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#include <linux/ipu.h>
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#include <linux/mxcfb.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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#ifdef CAMERA_DBG
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#define CAMERA_TRACE(x) (printk)x
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#else
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#define CAMERA_TRACE(x)
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#endif
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static int csi_buffer_num, buffer_num;
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static u32 csi_mem_bufsize;
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static struct ipu_soc *disp_ipu;
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static struct fb_info *fbi;
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static struct fb_var_screeninfo fbvar;
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static u32 vf_out_format;
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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_NV12;
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if (buffer_num == 0)
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task.output.paddr = fbi->fix.smem_start +
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(fbi->fix.line_length * fbvar.yres);
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else
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task.output.paddr = fbi->fix.smem_start;
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task.output.width = cam->win.w.width;
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task.output.height = cam->win.w.height;
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task.output.format = vf_out_format;
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task.output.rotate = cam->rotation;
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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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ipu_select_buffer(disp_ipu, MEM_FG_SYNC, IPU_INPUT_BUFFER, buffer_num);
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buffer_num = (buffer_num == 0) ? 1 : 0;
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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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if ((cam->crop_current.width != cam->win.w.width) ||
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(cam->crop_current.height != cam->win.w.height) ||
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(vf_out_format != IPU_PIX_FMT_NV12) ||
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(cam->rotation >= IPU_ROTATE_VERT_FLIP))
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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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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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CAMERA_TRACE("In csi_enc_setup\n");
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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 = cam->crop_current.width *
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cam->crop_current.height * 3/2;
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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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if ((cam->crop_current.width == cam->win.w.width) &&
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(cam->crop_current.height == cam->win.w.height) &&
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(vf_out_format == IPU_PIX_FMT_NV12) &&
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(cam->rotation < IPU_ROTATE_VERT_FLIP)) {
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err = ipu_init_channel_buffer(cam->ipu, chan,
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IPU_OUTPUT_BUFFER, IPU_PIX_FMT_NV12,
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cam->crop_current.width,
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cam->crop_current.height,
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cam->crop_current.width, IPU_ROTATE_NONE,
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fbi->fix.smem_start +
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(fbi->fix.line_length * fbvar.yres),
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fbi->fix.smem_start, 0,
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cam->offset.u_offset, cam->offset.u_offset);
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} else {
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err = ipu_init_channel_buffer(cam->ipu, chan,
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IPU_OUTPUT_BUFFER, IPU_PIX_FMT_NV12,
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cam->crop_current.width,
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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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}
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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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CAMERA_TRACE("IPU:In csi_enc_enabling_tasks\n");
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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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* Function definitions
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*/
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/*!
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* foreground_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 foreground_start(void *private)
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{
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cam_data *cam = (cam_data *) private;
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int err = 0, i = 0, screen_size;
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char *base;
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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 started.\n");
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return 0;
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}
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get_disp_ipu(cam);
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for (i = 0; i < num_registered_fb; i++) {
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char *idstr = registered_fb[i]->fix.id;
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if (((strcmp(idstr, "DISP3 FG") == 0) && (cam->output < 3)) ||
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((strcmp(idstr, "DISP4 FG") == 0) && (cam->output >= 3))) {
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fbi = registered_fb[i];
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break;
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}
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}
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if (fbi == NULL) {
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printk(KERN_ERR "DISP FG fb not found\n");
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return -EPERM;
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}
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fbvar = fbi->var;
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/* Store the overlay frame buffer's original std */
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cam->fb_origin_std = fbvar.nonstd;
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if (cam->devtype == IMX5_V4L2 || cam->devtype == IMX6_V4L2) {
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/* Use DP to do CSC so that we can get better performance */
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vf_out_format = IPU_PIX_FMT_NV12;
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fbvar.nonstd = vf_out_format;
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} else {
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vf_out_format = IPU_PIX_FMT_RGB565;
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fbvar.nonstd = 0;
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}
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fbvar.bits_per_pixel = 16;
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fbvar.xres = fbvar.xres_virtual = cam->win.w.width;
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fbvar.yres = cam->win.w.height;
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fbvar.yres_virtual = cam->win.w.height * 2;
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fbvar.yoffset = 0;
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fbvar.vmode &= ~FB_VMODE_YWRAP;
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fbvar.accel_flags = FB_ACCEL_DOUBLE_FLAG;
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fbvar.activate |= FB_ACTIVATE_FORCE;
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fb_set_var(fbi, &fbvar);
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ipu_disp_set_window_pos(disp_ipu, MEM_FG_SYNC, cam->win.w.left,
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cam->win.w.top);
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/* Fill black color for framebuffer */
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base = (char *) fbi->screen_base;
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screen_size = fbi->var.xres * fbi->var.yres;
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if (cam->devtype == IMX5_V4L2 || cam->devtype == IMX6_V4L2) {
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memset(base, 0, screen_size);
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base += screen_size;
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for (i = 0; i < screen_size / 2; i++, base++)
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*base = 0x80;
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} else {
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for (i = 0; i < screen_size * 2; i++, base++)
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*base = 0x00;
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}
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console_lock();
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fb_blank(fbi, FB_BLANK_UNBLANK);
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console_unlock();
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/* correct display ch buffer address */
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ipu_update_channel_buffer(disp_ipu, MEM_FG_SYNC, IPU_INPUT_BUFFER,
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0, fbi->fix.smem_start +
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(fbi->fix.line_length * fbvar.yres));
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ipu_update_channel_buffer(disp_ipu, MEM_FG_SYNC, IPU_INPUT_BUFFER,
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1, fbi->fix.smem_start);
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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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* foreground_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 foreground_stop(void *private)
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{
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cam_data *cam = (cam_data *) private;
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int err = 0, i = 0;
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struct fb_info *fbi = NULL;
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struct fb_var_screeninfo fbvar;
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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);
|
|
|
|
ipu_uninit_channel(cam->ipu, chan);
|
|
|
|
csi_buffer_num = 0;
|
|
buffer_num = 0;
|
|
|
|
for (i = 0; i < num_registered_fb; i++) {
|
|
char *idstr = registered_fb[i]->fix.id;
|
|
if (((strcmp(idstr, "DISP3 FG") == 0) && (cam->output < 3)) ||
|
|
((strcmp(idstr, "DISP4 FG") == 0) && (cam->output >= 3))) {
|
|
fbi = registered_fb[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (fbi == NULL) {
|
|
printk(KERN_ERR "DISP FG fb not found\n");
|
|
return -EPERM;
|
|
}
|
|
|
|
console_lock();
|
|
fb_blank(fbi, FB_BLANK_POWERDOWN);
|
|
console_unlock();
|
|
|
|
/* Set the overlay frame buffer std to what it is used to be */
|
|
fbvar = fbi->var;
|
|
fbvar.accel_flags = FB_ACCEL_TRIPLE_FLAG;
|
|
fbvar.nonstd = cam->fb_origin_std;
|
|
fbvar.activate |= FB_ACTIVATE_FORCE;
|
|
fb_set_var(fbi, &fbvar);
|
|
|
|
#ifdef CONFIG_MXC_MIPI_CSI2
|
|
mipi_csi2_info = mipi_csi2_get_info();
|
|
|
|
if (mipi_csi2_info) {
|
|
if (mipi_csi2_get_status(mipi_csi2_info)) {
|
|
ipu_id = mipi_csi2_get_bind_ipu(mipi_csi2_info);
|
|
csi_id = mipi_csi2_get_bind_csi(mipi_csi2_info);
|
|
|
|
if (cam->ipu == ipu_get_soc(ipu_id)
|
|
&& cam->csi == csi_id)
|
|
mipi_csi2_pixelclk_disable(mipi_csi2_info);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
flush_work(&cam->csi_work_struct);
|
|
cancel_work_sync(&cam->csi_work_struct);
|
|
|
|
if (cam->vf_bufs_vaddr[0]) {
|
|
dma_free_coherent(0, cam->vf_bufs_size[0],
|
|
cam->vf_bufs_vaddr[0],
|
|
(dma_addr_t) cam->vf_bufs[0]);
|
|
cam->vf_bufs_vaddr[0] = NULL;
|
|
cam->vf_bufs[0] = 0;
|
|
}
|
|
if (cam->vf_bufs_vaddr[1]) {
|
|
dma_free_coherent(0, cam->vf_bufs_size[1],
|
|
cam->vf_bufs_vaddr[1],
|
|
(dma_addr_t) cam->vf_bufs[1]);
|
|
cam->vf_bufs_vaddr[1] = NULL;
|
|
cam->vf_bufs[1] = 0;
|
|
}
|
|
|
|
cam->overlay_active = false;
|
|
return err;
|
|
}
|
|
|
|
/*!
|
|
* Enable csi
|
|
* @param private struct cam_data * mxc capture instance
|
|
*
|
|
* @return status
|
|
*/
|
|
static int foreground_enable_csi(void *private)
|
|
{
|
|
cam_data *cam = (cam_data *) private;
|
|
|
|
return ipu_enable_csi(cam->ipu, cam->csi);
|
|
}
|
|
|
|
/*!
|
|
* Disable csi
|
|
* @param private struct cam_data * mxc capture instance
|
|
*
|
|
* @return status
|
|
*/
|
|
static int foreground_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 foreground as the working path
|
|
*
|
|
* @param private cam_data * mxc v4l2 main structure
|
|
*
|
|
* @return status
|
|
*/
|
|
int foreground_sdc_select(void *private)
|
|
{
|
|
cam_data *cam;
|
|
int err = 0;
|
|
if (private) {
|
|
cam = (cam_data *) private;
|
|
cam->vf_start_sdc = foreground_start;
|
|
cam->vf_stop_sdc = foreground_stop;
|
|
cam->vf_enable_csi = foreground_enable_csi;
|
|
cam->vf_disable_csi = foreground_disable_csi;
|
|
cam->overlay_active = false;
|
|
} else
|
|
err = -EIO;
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(foreground_sdc_select);
|
|
|
|
/*!
|
|
* function to de-select foreground as the working path
|
|
*
|
|
* @param private cam_data * mxc v4l2 main structure
|
|
*
|
|
* @return int
|
|
*/
|
|
int foreground_sdc_deselect(void *private)
|
|
{
|
|
cam_data *cam;
|
|
|
|
if (private) {
|
|
cam = (cam_data *) private;
|
|
cam->vf_start_sdc = NULL;
|
|
cam->vf_stop_sdc = NULL;
|
|
cam->vf_enable_csi = NULL;
|
|
cam->vf_disable_csi = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(foreground_sdc_deselect);
|
|
|
|
/*!
|
|
* Init viewfinder task.
|
|
*
|
|
* @return Error code indicating success or failure
|
|
*/
|
|
__init int foreground_sdc_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*!
|
|
* Deinit viewfinder task.
|
|
*
|
|
* @return Error code indicating success or failure
|
|
*/
|
|
void __exit foreground_sdc_exit(void)
|
|
{
|
|
}
|
|
|
|
module_init(foreground_sdc_init);
|
|
module_exit(foreground_sdc_exit);
|
|
|
|
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
|
|
MODULE_DESCRIPTION("IPU PRP VF SDC Driver");
|
|
MODULE_LICENSE("GPL");
|