901 lines
23 KiB
C
901 lines
23 KiB
C
/*
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* Driver for the Conexant CX25821 PCIe bridge
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*
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* Copyright (C) 2009 Conexant Systems Inc.
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* Authors <hiep.huynh@conexant.com>, <shu.lin@conexant.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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*
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "cx25821-video.h"
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#include "cx25821-video-upstream.h"
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#include <linux/fs.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/syscalls.h>
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#include <linux/file.h>
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#include <linux/fcntl.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
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MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
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MODULE_LICENSE("GPL");
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static int _intr_msk =
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FLD_VID_SRC_RISC1 | FLD_VID_SRC_UF | FLD_VID_SRC_SYNC | FLD_VID_SRC_OPC_ERR;
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int cx25821_sram_channel_setup_upstream(struct cx25821_dev *dev,
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struct sram_channel *ch,
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unsigned int bpl, u32 risc)
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{
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unsigned int i, lines;
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u32 cdt;
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if (ch->cmds_start == 0) {
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cx_write(ch->ptr1_reg, 0);
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cx_write(ch->ptr2_reg, 0);
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cx_write(ch->cnt2_reg, 0);
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cx_write(ch->cnt1_reg, 0);
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return 0;
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}
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bpl = (bpl + 7) & ~7; /* alignment */
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cdt = ch->cdt;
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lines = ch->fifo_size / bpl;
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if (lines > 4)
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lines = 4;
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BUG_ON(lines < 2);
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/* write CDT */
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for (i = 0; i < lines; i++) {
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cx_write(cdt + 16 * i, ch->fifo_start + bpl * i);
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cx_write(cdt + 16 * i + 4, 0);
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cx_write(cdt + 16 * i + 8, 0);
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cx_write(cdt + 16 * i + 12, 0);
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}
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/* write CMDS */
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cx_write(ch->cmds_start + 0, risc);
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cx_write(ch->cmds_start + 4, 0);
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cx_write(ch->cmds_start + 8, cdt);
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cx_write(ch->cmds_start + 12, (lines * 16) >> 3);
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cx_write(ch->cmds_start + 16, ch->ctrl_start);
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cx_write(ch->cmds_start + 20, VID_IQ_SIZE_DW);
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for (i = 24; i < 80; i += 4)
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cx_write(ch->cmds_start + i, 0);
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/* fill registers */
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cx_write(ch->ptr1_reg, ch->fifo_start);
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cx_write(ch->ptr2_reg, cdt);
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cx_write(ch->cnt2_reg, (lines * 16) >> 3);
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cx_write(ch->cnt1_reg, (bpl >> 3) - 1);
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return 0;
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}
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static __le32 *cx25821_update_riscprogram(struct cx25821_dev *dev,
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__le32 *rp, unsigned int offset,
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unsigned int bpl, u32 sync_line,
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unsigned int lines, int fifo_enable,
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int field_type)
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{
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unsigned int line, i;
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int dist_betwn_starts = bpl * 2;
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*(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
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if (USE_RISC_NOOP_VIDEO) {
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for (i = 0; i < NUM_NO_OPS; i++)
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*(rp++) = cpu_to_le32(RISC_NOOP);
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}
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/* scan lines */
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for (line = 0; line < lines; line++) {
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*(rp++) = cpu_to_le32(RISC_READ | RISC_SOL | RISC_EOL | bpl);
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*(rp++) = cpu_to_le32(dev->_data_buf_phys_addr + offset);
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*(rp++) = cpu_to_le32(0); /* bits 63-32 */
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if ((lines <= NTSC_FIELD_HEIGHT)
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|| (line < (NTSC_FIELD_HEIGHT - 1)) || !(dev->_isNTSC)) {
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offset += dist_betwn_starts;
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}
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}
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return rp;
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}
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static __le32 *cx25821_risc_field_upstream(struct cx25821_dev *dev, __le32 * rp,
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dma_addr_t databuf_phys_addr,
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unsigned int offset, u32 sync_line,
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unsigned int bpl, unsigned int lines,
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int fifo_enable, int field_type)
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{
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unsigned int line, i;
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struct sram_channel *sram_ch =
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&dev->sram_channels[dev->_channel_upstream_select];
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int dist_betwn_starts = bpl * 2;
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/* sync instruction */
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if (sync_line != NO_SYNC_LINE)
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*(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
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if (USE_RISC_NOOP_VIDEO) {
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for (i = 0; i < NUM_NO_OPS; i++)
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*(rp++) = cpu_to_le32(RISC_NOOP);
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}
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/* scan lines */
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for (line = 0; line < lines; line++) {
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*(rp++) = cpu_to_le32(RISC_READ | RISC_SOL | RISC_EOL | bpl);
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*(rp++) = cpu_to_le32(databuf_phys_addr + offset);
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*(rp++) = cpu_to_le32(0); /* bits 63-32 */
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if ((lines <= NTSC_FIELD_HEIGHT)
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|| (line < (NTSC_FIELD_HEIGHT - 1)) || !(dev->_isNTSC))
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/* to skip the other field line */
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offset += dist_betwn_starts;
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/* check if we need to enable the FIFO after the first 4 lines
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* For the upstream video channel, the risc engine will enable
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* the FIFO. */
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if (fifo_enable && line == 3) {
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*(rp++) = RISC_WRITECR;
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*(rp++) = sram_ch->dma_ctl;
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*(rp++) = FLD_VID_FIFO_EN;
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*(rp++) = 0x00000001;
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}
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}
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return rp;
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}
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int cx25821_risc_buffer_upstream(struct cx25821_dev *dev,
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struct pci_dev *pci,
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unsigned int top_offset,
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unsigned int bpl, unsigned int lines)
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{
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__le32 *rp;
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int fifo_enable = 0;
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/* get line count for single field */
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int singlefield_lines = lines >> 1;
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int odd_num_lines = singlefield_lines;
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int frame = 0;
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int frame_size = 0;
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int databuf_offset = 0;
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int risc_program_size = 0;
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int risc_flag = RISC_CNT_RESET;
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unsigned int bottom_offset = bpl;
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dma_addr_t risc_phys_jump_addr;
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if (dev->_isNTSC) {
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odd_num_lines = singlefield_lines + 1;
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risc_program_size = FRAME1_VID_PROG_SIZE;
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frame_size =
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(bpl ==
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Y411_LINE_SZ) ? FRAME_SIZE_NTSC_Y411 :
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FRAME_SIZE_NTSC_Y422;
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} else {
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risc_program_size = PAL_VID_PROG_SIZE;
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frame_size =
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(bpl ==
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Y411_LINE_SZ) ? FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422;
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}
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/* Virtual address of Risc buffer program */
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rp = dev->_dma_virt_addr;
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for (frame = 0; frame < NUM_FRAMES; frame++) {
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databuf_offset = frame_size * frame;
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if (UNSET != top_offset) {
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fifo_enable = (frame == 0) ? FIFO_ENABLE : FIFO_DISABLE;
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rp = cx25821_risc_field_upstream(dev, rp,
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dev->
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_data_buf_phys_addr +
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databuf_offset,
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top_offset, 0, bpl,
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odd_num_lines,
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fifo_enable,
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ODD_FIELD);
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}
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fifo_enable = FIFO_DISABLE;
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/* Even Field */
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rp = cx25821_risc_field_upstream(dev, rp,
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dev->_data_buf_phys_addr +
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databuf_offset, bottom_offset,
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0x200, bpl, singlefield_lines,
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fifo_enable, EVEN_FIELD);
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if (frame == 0) {
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risc_flag = RISC_CNT_RESET;
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risc_phys_jump_addr =
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dev->_dma_phys_start_addr + risc_program_size;
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} else {
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risc_phys_jump_addr = dev->_dma_phys_start_addr;
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risc_flag = RISC_CNT_INC;
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}
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/* Loop to 2ndFrameRISC or to Start of Risc
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* program & generate IRQ
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*/
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*(rp++) = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | risc_flag);
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*(rp++) = cpu_to_le32(risc_phys_jump_addr);
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*(rp++) = cpu_to_le32(0);
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}
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return 0;
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}
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void cx25821_stop_upstream_video_ch1(struct cx25821_dev *dev)
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{
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struct sram_channel *sram_ch =
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&dev->sram_channels[VID_UPSTREAM_SRAM_CHANNEL_I];
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u32 tmp = 0;
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if (!dev->_is_running) {
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printk
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(KERN_INFO "cx25821: No video file is currently running so return!\n");
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return;
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}
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/* Disable RISC interrupts */
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tmp = cx_read(sram_ch->int_msk);
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cx_write(sram_ch->int_msk, tmp & ~_intr_msk);
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/* Turn OFF risc and fifo enable */
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tmp = cx_read(sram_ch->dma_ctl);
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cx_write(sram_ch->dma_ctl, tmp & ~(FLD_VID_FIFO_EN | FLD_VID_RISC_EN));
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/* Clear data buffer memory */
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if (dev->_data_buf_virt_addr)
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memset(dev->_data_buf_virt_addr, 0, dev->_data_buf_size);
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dev->_is_running = 0;
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dev->_is_first_frame = 0;
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dev->_frame_count = 0;
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dev->_file_status = END_OF_FILE;
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if (dev->_irq_queues) {
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kfree(dev->_irq_queues);
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dev->_irq_queues = NULL;
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}
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if (dev->_filename != NULL)
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kfree(dev->_filename);
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tmp = cx_read(VID_CH_MODE_SEL);
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cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
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}
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void cx25821_free_mem_upstream_ch1(struct cx25821_dev *dev)
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{
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if (dev->_is_running)
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cx25821_stop_upstream_video_ch1(dev);
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if (dev->_dma_virt_addr) {
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pci_free_consistent(dev->pci, dev->_risc_size,
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dev->_dma_virt_addr, dev->_dma_phys_addr);
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dev->_dma_virt_addr = NULL;
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}
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if (dev->_data_buf_virt_addr) {
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pci_free_consistent(dev->pci, dev->_data_buf_size,
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dev->_data_buf_virt_addr,
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dev->_data_buf_phys_addr);
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dev->_data_buf_virt_addr = NULL;
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}
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}
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int cx25821_get_frame(struct cx25821_dev *dev, struct sram_channel *sram_ch)
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{
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struct file *myfile;
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int frame_index_temp = dev->_frame_index;
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int i = 0;
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int line_size =
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(dev->_pixel_format ==
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PIXEL_FRMT_411) ? Y411_LINE_SZ : Y422_LINE_SZ;
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int frame_size = 0;
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int frame_offset = 0;
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ssize_t vfs_read_retval = 0;
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char mybuf[line_size];
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loff_t file_offset;
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loff_t pos;
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mm_segment_t old_fs;
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if (dev->_file_status == END_OF_FILE)
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return 0;
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if (dev->_isNTSC) {
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frame_size =
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(line_size ==
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Y411_LINE_SZ) ? FRAME_SIZE_NTSC_Y411 :
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FRAME_SIZE_NTSC_Y422;
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} else {
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frame_size =
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(line_size ==
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Y411_LINE_SZ) ? FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422;
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}
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frame_offset = (frame_index_temp > 0) ? frame_size : 0;
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file_offset = dev->_frame_count * frame_size;
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myfile = filp_open(dev->_filename, O_RDONLY | O_LARGEFILE, 0);
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if (IS_ERR(myfile)) {
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const int open_errno = -PTR_ERR(myfile);
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printk(KERN_ERR "%s(): ERROR opening file(%s) with errno = %d!\n",
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__func__, dev->_filename, open_errno);
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return PTR_ERR(myfile);
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} else {
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if (!(myfile->f_op)) {
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printk(KERN_ERR "%s: File has no file operations registered!",
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__func__);
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filp_close(myfile, NULL);
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return -EIO;
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}
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if (!myfile->f_op->read) {
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printk(KERN_ERR "%s: File has no READ operations registered!",
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__func__);
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filp_close(myfile, NULL);
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return -EIO;
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}
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pos = myfile->f_pos;
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old_fs = get_fs();
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set_fs(KERNEL_DS);
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for (i = 0; i < dev->_lines_count; i++) {
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pos = file_offset;
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vfs_read_retval =
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vfs_read(myfile, mybuf, line_size, &pos);
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if (vfs_read_retval > 0 && vfs_read_retval == line_size
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&& dev->_data_buf_virt_addr != NULL) {
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memcpy((void *)(dev->_data_buf_virt_addr +
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frame_offset / 4), mybuf,
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vfs_read_retval);
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}
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file_offset += vfs_read_retval;
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frame_offset += vfs_read_retval;
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if (vfs_read_retval < line_size) {
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printk(KERN_INFO
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"Done: exit %s() since no more bytes to read from Video file.\n",
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__func__);
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break;
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}
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}
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if (i > 0)
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dev->_frame_count++;
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dev->_file_status =
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(vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE;
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set_fs(old_fs);
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filp_close(myfile, NULL);
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}
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return 0;
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}
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static void cx25821_vidups_handler(struct work_struct *work)
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{
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struct cx25821_dev *dev =
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container_of(work, struct cx25821_dev, _irq_work_entry);
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if (!dev) {
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printk(KERN_ERR "ERROR %s(): since container_of(work_struct) FAILED!\n",
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__func__);
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return;
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}
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cx25821_get_frame(dev,
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&dev->sram_channels[dev->_channel_upstream_select]);
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}
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int cx25821_openfile(struct cx25821_dev *dev, struct sram_channel *sram_ch)
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{
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struct file *myfile;
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int i = 0, j = 0;
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int line_size =
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(dev->_pixel_format ==
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PIXEL_FRMT_411) ? Y411_LINE_SZ : Y422_LINE_SZ;
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ssize_t vfs_read_retval = 0;
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char mybuf[line_size];
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loff_t pos;
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loff_t offset = (unsigned long)0;
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mm_segment_t old_fs;
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myfile = filp_open(dev->_filename, O_RDONLY | O_LARGEFILE, 0);
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if (IS_ERR(myfile)) {
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const int open_errno = -PTR_ERR(myfile);
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printk(KERN_ERR "%s(): ERROR opening file(%s) with errno = %d!\n",
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__func__, dev->_filename, open_errno);
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return PTR_ERR(myfile);
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} else {
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if (!(myfile->f_op)) {
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printk(KERN_ERR "%s: File has no file operations registered!",
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__func__);
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filp_close(myfile, NULL);
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return -EIO;
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}
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if (!myfile->f_op->read) {
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printk
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(KERN_ERR "%s: File has no READ operations registered! Returning.",
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__func__);
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filp_close(myfile, NULL);
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return -EIO;
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}
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pos = myfile->f_pos;
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old_fs = get_fs();
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set_fs(KERNEL_DS);
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for (j = 0; j < NUM_FRAMES; j++) {
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for (i = 0; i < dev->_lines_count; i++) {
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pos = offset;
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vfs_read_retval =
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vfs_read(myfile, mybuf, line_size, &pos);
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if (vfs_read_retval > 0
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&& vfs_read_retval == line_size
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&& dev->_data_buf_virt_addr != NULL) {
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memcpy((void *)(dev->
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_data_buf_virt_addr +
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offset / 4), mybuf,
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vfs_read_retval);
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}
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offset += vfs_read_retval;
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if (vfs_read_retval < line_size) {
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printk(KERN_INFO
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"Done: exit %s() since no more bytes to read from Video file.\n",
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__func__);
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break;
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}
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}
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if (i > 0)
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dev->_frame_count++;
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if (vfs_read_retval < line_size)
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break;
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}
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dev->_file_status =
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(vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE;
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set_fs(old_fs);
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|
myfile->f_pos = 0;
|
|
filp_close(myfile, NULL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int cx25821_upstream_buffer_prepare(struct cx25821_dev *dev,
|
|
struct sram_channel *sram_ch, int bpl)
|
|
{
|
|
int ret = 0;
|
|
dma_addr_t dma_addr;
|
|
dma_addr_t data_dma_addr;
|
|
|
|
if (dev->_dma_virt_addr != NULL) {
|
|
pci_free_consistent(dev->pci, dev->upstream_riscbuf_size,
|
|
dev->_dma_virt_addr, dev->_dma_phys_addr);
|
|
}
|
|
|
|
dev->_dma_virt_addr =
|
|
pci_alloc_consistent(dev->pci, dev->upstream_riscbuf_size,
|
|
&dma_addr);
|
|
dev->_dma_virt_start_addr = dev->_dma_virt_addr;
|
|
dev->_dma_phys_start_addr = dma_addr;
|
|
dev->_dma_phys_addr = dma_addr;
|
|
dev->_risc_size = dev->upstream_riscbuf_size;
|
|
|
|
if (!dev->_dma_virt_addr) {
|
|
printk
|
|
(KERN_ERR "cx25821: FAILED to allocate memory for Risc buffer! Returning.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Clear memory at address */
|
|
memset(dev->_dma_virt_addr, 0, dev->_risc_size);
|
|
|
|
if (dev->_data_buf_virt_addr != NULL) {
|
|
pci_free_consistent(dev->pci, dev->upstream_databuf_size,
|
|
dev->_data_buf_virt_addr,
|
|
dev->_data_buf_phys_addr);
|
|
}
|
|
/* For Video Data buffer allocation */
|
|
dev->_data_buf_virt_addr =
|
|
pci_alloc_consistent(dev->pci, dev->upstream_databuf_size,
|
|
&data_dma_addr);
|
|
dev->_data_buf_phys_addr = data_dma_addr;
|
|
dev->_data_buf_size = dev->upstream_databuf_size;
|
|
|
|
if (!dev->_data_buf_virt_addr) {
|
|
printk
|
|
(KERN_ERR "cx25821: FAILED to allocate memory for data buffer! Returning.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Clear memory at address */
|
|
memset(dev->_data_buf_virt_addr, 0, dev->_data_buf_size);
|
|
|
|
ret = cx25821_openfile(dev, sram_ch);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Create RISC programs */
|
|
ret =
|
|
cx25821_risc_buffer_upstream(dev, dev->pci, 0, bpl,
|
|
dev->_lines_count);
|
|
if (ret < 0) {
|
|
printk(KERN_INFO
|
|
"cx25821: Failed creating Video Upstream Risc programs!\n");
|
|
goto error;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error:
|
|
return ret;
|
|
}
|
|
|
|
int cx25821_video_upstream_irq(struct cx25821_dev *dev, int chan_num,
|
|
u32 status)
|
|
{
|
|
u32 int_msk_tmp;
|
|
struct sram_channel *channel = &dev->sram_channels[chan_num];
|
|
int singlefield_lines = NTSC_FIELD_HEIGHT;
|
|
int line_size_in_bytes = Y422_LINE_SZ;
|
|
int odd_risc_prog_size = 0;
|
|
dma_addr_t risc_phys_jump_addr;
|
|
__le32 *rp;
|
|
|
|
if (status & FLD_VID_SRC_RISC1) {
|
|
/* We should only process one program per call */
|
|
u32 prog_cnt = cx_read(channel->gpcnt);
|
|
|
|
/* Since we've identified our IRQ, clear our bits from the
|
|
* interrupt mask and interrupt status registers */
|
|
int_msk_tmp = cx_read(channel->int_msk);
|
|
cx_write(channel->int_msk, int_msk_tmp & ~_intr_msk);
|
|
cx_write(channel->int_stat, _intr_msk);
|
|
|
|
spin_lock(&dev->slock);
|
|
|
|
dev->_frame_index = prog_cnt;
|
|
|
|
queue_work(dev->_irq_queues, &dev->_irq_work_entry);
|
|
|
|
if (dev->_is_first_frame) {
|
|
dev->_is_first_frame = 0;
|
|
|
|
if (dev->_isNTSC) {
|
|
singlefield_lines += 1;
|
|
odd_risc_prog_size = ODD_FLD_NTSC_PROG_SIZE;
|
|
} else {
|
|
singlefield_lines = PAL_FIELD_HEIGHT;
|
|
odd_risc_prog_size = ODD_FLD_PAL_PROG_SIZE;
|
|
}
|
|
|
|
if (dev->_dma_virt_start_addr != NULL) {
|
|
line_size_in_bytes =
|
|
(dev->_pixel_format ==
|
|
PIXEL_FRMT_411) ? Y411_LINE_SZ :
|
|
Y422_LINE_SZ;
|
|
risc_phys_jump_addr =
|
|
dev->_dma_phys_start_addr +
|
|
odd_risc_prog_size;
|
|
|
|
rp = cx25821_update_riscprogram(dev,
|
|
dev->
|
|
_dma_virt_start_addr,
|
|
TOP_OFFSET,
|
|
line_size_in_bytes,
|
|
0x0,
|
|
singlefield_lines,
|
|
FIFO_DISABLE,
|
|
ODD_FIELD);
|
|
|
|
/* Jump to Even Risc program of 1st Frame */
|
|
*(rp++) = cpu_to_le32(RISC_JUMP);
|
|
*(rp++) = cpu_to_le32(risc_phys_jump_addr);
|
|
*(rp++) = cpu_to_le32(0);
|
|
}
|
|
}
|
|
|
|
spin_unlock(&dev->slock);
|
|
} else {
|
|
if (status & FLD_VID_SRC_UF)
|
|
printk
|
|
(KERN_ERR "%s: Video Received Underflow Error Interrupt!\n",
|
|
__func__);
|
|
|
|
if (status & FLD_VID_SRC_SYNC)
|
|
printk(KERN_ERR "%s: Video Received Sync Error Interrupt!\n",
|
|
__func__);
|
|
|
|
if (status & FLD_VID_SRC_OPC_ERR)
|
|
printk(KERN_ERR "%s: Video Received OpCode Error Interrupt!\n",
|
|
__func__);
|
|
}
|
|
|
|
if (dev->_file_status == END_OF_FILE) {
|
|
printk(KERN_ERR "cx25821: EOF Channel 1 Framecount = %d\n",
|
|
dev->_frame_count);
|
|
return -1;
|
|
}
|
|
/* ElSE, set the interrupt mask register, re-enable irq. */
|
|
int_msk_tmp = cx_read(channel->int_msk);
|
|
cx_write(channel->int_msk, int_msk_tmp |= _intr_msk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t cx25821_upstream_irq(int irq, void *dev_id)
|
|
{
|
|
struct cx25821_dev *dev = dev_id;
|
|
u32 msk_stat, vid_status;
|
|
int handled = 0;
|
|
int channel_num = 0;
|
|
struct sram_channel *sram_ch;
|
|
|
|
if (!dev)
|
|
return -1;
|
|
|
|
channel_num = VID_UPSTREAM_SRAM_CHANNEL_I;
|
|
|
|
sram_ch = &dev->sram_channels[channel_num];
|
|
|
|
msk_stat = cx_read(sram_ch->int_mstat);
|
|
vid_status = cx_read(sram_ch->int_stat);
|
|
|
|
/* Only deal with our interrupt */
|
|
if (vid_status) {
|
|
handled =
|
|
cx25821_video_upstream_irq(dev, channel_num, vid_status);
|
|
}
|
|
|
|
if (handled < 0)
|
|
cx25821_stop_upstream_video_ch1(dev);
|
|
else
|
|
handled += handled;
|
|
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
void cx25821_set_pixelengine(struct cx25821_dev *dev, struct sram_channel *ch,
|
|
int pix_format)
|
|
{
|
|
int width = WIDTH_D1;
|
|
int height = dev->_lines_count;
|
|
int num_lines, odd_num_lines;
|
|
u32 value;
|
|
int vip_mode = OUTPUT_FRMT_656;
|
|
|
|
value = ((pix_format & 0x3) << 12) | (vip_mode & 0x7);
|
|
value &= 0xFFFFFFEF;
|
|
value |= dev->_isNTSC ? 0 : 0x10;
|
|
cx_write(ch->vid_fmt_ctl, value);
|
|
|
|
/* set number of active pixels in each line.
|
|
* Default is 720 pixels in both NTSC and PAL format */
|
|
cx_write(ch->vid_active_ctl1, width);
|
|
|
|
num_lines = (height / 2) & 0x3FF;
|
|
odd_num_lines = num_lines;
|
|
|
|
if (dev->_isNTSC)
|
|
odd_num_lines += 1;
|
|
|
|
value = (num_lines << 16) | odd_num_lines;
|
|
|
|
/* set number of active lines in field 0 (top) and field 1 (bottom) */
|
|
cx_write(ch->vid_active_ctl2, value);
|
|
|
|
cx_write(ch->vid_cdt_size, VID_CDT_SIZE >> 3);
|
|
}
|
|
|
|
int cx25821_start_video_dma_upstream(struct cx25821_dev *dev,
|
|
struct sram_channel *sram_ch)
|
|
{
|
|
u32 tmp = 0;
|
|
int err = 0;
|
|
|
|
/* 656/VIP SRC Upstream Channel I & J and 7 - Host Bus Interface for
|
|
* channel A-C
|
|
*/
|
|
tmp = cx_read(VID_CH_MODE_SEL);
|
|
cx_write(VID_CH_MODE_SEL, tmp | 0x1B0001FF);
|
|
|
|
/* Set the physical start address of the RISC program in the initial
|
|
* program counter(IPC) member of the cmds.
|
|
*/
|
|
cx_write(sram_ch->cmds_start + 0, dev->_dma_phys_addr);
|
|
/* Risc IPC High 64 bits 63-32 */
|
|
cx_write(sram_ch->cmds_start + 4, 0);
|
|
|
|
/* reset counter */
|
|
cx_write(sram_ch->gpcnt_ctl, 3);
|
|
|
|
/* Clear our bits from the interrupt status register. */
|
|
cx_write(sram_ch->int_stat, _intr_msk);
|
|
|
|
/* Set the interrupt mask register, enable irq. */
|
|
cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << sram_ch->irq_bit));
|
|
tmp = cx_read(sram_ch->int_msk);
|
|
cx_write(sram_ch->int_msk, tmp |= _intr_msk);
|
|
|
|
err =
|
|
request_irq(dev->pci->irq, cx25821_upstream_irq,
|
|
IRQF_SHARED | IRQF_DISABLED, dev->name, dev);
|
|
if (err < 0) {
|
|
printk(KERN_ERR "%s: can't get upstream IRQ %d\n", dev->name,
|
|
dev->pci->irq);
|
|
goto fail_irq;
|
|
}
|
|
|
|
/* Start the DMA engine */
|
|
tmp = cx_read(sram_ch->dma_ctl);
|
|
cx_set(sram_ch->dma_ctl, tmp | FLD_VID_RISC_EN);
|
|
|
|
dev->_is_running = 1;
|
|
dev->_is_first_frame = 1;
|
|
|
|
return 0;
|
|
|
|
fail_irq:
|
|
cx25821_dev_unregister(dev);
|
|
return err;
|
|
}
|
|
|
|
int cx25821_vidupstream_init_ch1(struct cx25821_dev *dev, int channel_select,
|
|
int pixel_format)
|
|
{
|
|
struct sram_channel *sram_ch;
|
|
u32 tmp;
|
|
int retval = 0;
|
|
int err = 0;
|
|
int data_frame_size = 0;
|
|
int risc_buffer_size = 0;
|
|
int str_length = 0;
|
|
|
|
if (dev->_is_running) {
|
|
printk(KERN_INFO "Video Channel is still running so return!\n");
|
|
return 0;
|
|
}
|
|
|
|
dev->_channel_upstream_select = channel_select;
|
|
sram_ch = &dev->sram_channels[channel_select];
|
|
|
|
INIT_WORK(&dev->_irq_work_entry, cx25821_vidups_handler);
|
|
dev->_irq_queues = create_singlethread_workqueue("cx25821_workqueue");
|
|
|
|
if (!dev->_irq_queues) {
|
|
printk
|
|
(KERN_ERR "cx25821: create_singlethread_workqueue() for Video FAILED!\n");
|
|
return -ENOMEM;
|
|
}
|
|
/* 656/VIP SRC Upstream Channel I & J and 7 - Host Bus Interface for
|
|
* channel A-C
|
|
*/
|
|
tmp = cx_read(VID_CH_MODE_SEL);
|
|
cx_write(VID_CH_MODE_SEL, tmp | 0x1B0001FF);
|
|
|
|
dev->_is_running = 0;
|
|
dev->_frame_count = 0;
|
|
dev->_file_status = RESET_STATUS;
|
|
dev->_lines_count = dev->_isNTSC ? 480 : 576;
|
|
dev->_pixel_format = pixel_format;
|
|
dev->_line_size =
|
|
(dev->_pixel_format ==
|
|
PIXEL_FRMT_422) ? (WIDTH_D1 * 2) : (WIDTH_D1 * 3) / 2;
|
|
data_frame_size = dev->_isNTSC ? NTSC_DATA_BUF_SZ : PAL_DATA_BUF_SZ;
|
|
risc_buffer_size =
|
|
dev->_isNTSC ? NTSC_RISC_BUF_SIZE : PAL_RISC_BUF_SIZE;
|
|
|
|
if (dev->input_filename) {
|
|
str_length = strlen(dev->input_filename);
|
|
dev->_filename = kmalloc(str_length + 1, GFP_KERNEL);
|
|
|
|
if (!dev->_filename)
|
|
goto error;
|
|
|
|
memcpy(dev->_filename, dev->input_filename, str_length + 1);
|
|
} else {
|
|
str_length = strlen(dev->_defaultname);
|
|
dev->_filename = kmalloc(str_length + 1, GFP_KERNEL);
|
|
|
|
if (!dev->_filename)
|
|
goto error;
|
|
|
|
memcpy(dev->_filename, dev->_defaultname, str_length + 1);
|
|
}
|
|
|
|
/* Default if filename is empty string */
|
|
if (strcmp(dev->input_filename, "") == 0) {
|
|
if (dev->_isNTSC) {
|
|
dev->_filename =
|
|
(dev->_pixel_format ==
|
|
PIXEL_FRMT_411) ? "/root/vid411.yuv" :
|
|
"/root/vidtest.yuv";
|
|
} else {
|
|
dev->_filename =
|
|
(dev->_pixel_format ==
|
|
PIXEL_FRMT_411) ? "/root/pal411.yuv" :
|
|
"/root/pal422.yuv";
|
|
}
|
|
}
|
|
|
|
dev->_is_running = 0;
|
|
dev->_frame_count = 0;
|
|
dev->_file_status = RESET_STATUS;
|
|
dev->_lines_count = dev->_isNTSC ? 480 : 576;
|
|
dev->_pixel_format = pixel_format;
|
|
dev->_line_size =
|
|
(dev->_pixel_format ==
|
|
PIXEL_FRMT_422) ? (WIDTH_D1 * 2) : (WIDTH_D1 * 3) / 2;
|
|
|
|
retval =
|
|
cx25821_sram_channel_setup_upstream(dev, sram_ch, dev->_line_size,
|
|
0);
|
|
|
|
/* setup fifo + format */
|
|
cx25821_set_pixelengine(dev, sram_ch, dev->_pixel_format);
|
|
|
|
dev->upstream_riscbuf_size = risc_buffer_size * 2;
|
|
dev->upstream_databuf_size = data_frame_size * 2;
|
|
|
|
/* Allocating buffers and prepare RISC program */
|
|
retval = cx25821_upstream_buffer_prepare(dev, sram_ch, dev->_line_size);
|
|
if (retval < 0) {
|
|
printk(KERN_ERR
|
|
"%s: Failed to set up Video upstream buffers!\n",
|
|
dev->name);
|
|
goto error;
|
|
}
|
|
|
|
cx25821_start_video_dma_upstream(dev, sram_ch);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
cx25821_dev_unregister(dev);
|
|
|
|
return err;
|
|
}
|