diff options
Diffstat (limited to 'drivers/staging/cx25821/cx25821-video-upstream-ch2.c')
-rw-r--r-- | drivers/staging/cx25821/cx25821-video-upstream-ch2.c | 1682 |
1 files changed, 835 insertions, 847 deletions
diff --git a/drivers/staging/cx25821/cx25821-video-upstream-ch2.c b/drivers/staging/cx25821/cx25821-video-upstream-ch2.c index 720729efc31..c8905e0ac50 100644 --- a/drivers/staging/cx25821/cx25821-video-upstream-ch2.c +++ b/drivers/staging/cx25821/cx25821-video-upstream-ch2.c @@ -1,847 +1,835 @@ -/*
- * Driver for the Conexant CX25821 PCIe bridge
- *
- * Copyright (C) 2009 Conexant Systems Inc.
- * Authors <hiep.huynh@conexant.com>, <shu.lin@conexant.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- *
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
-#include "cx25821-video.h"
-#include "cx25821-video-upstream-ch2.h"
-
-#include <linux/fs.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/syscalls.h>
-#include <linux/file.h>
-#include <linux/fcntl.h>
-#include <asm/uaccess.h>
-
-
-MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
-MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
-MODULE_LICENSE("GPL");
-
-
-static int _intr_msk = FLD_VID_SRC_RISC1 | FLD_VID_SRC_UF | FLD_VID_SRC_SYNC | FLD_VID_SRC_OPC_ERR;
-
-
-static __le32 *cx25821_update_riscprogram_ch2( struct cx25821_dev *dev,
- __le32 *rp, unsigned int offset, unsigned int bpl,
- u32 sync_line, unsigned int lines, int fifo_enable, int field_type)
-{
- unsigned int line, i;
- int dist_betwn_starts = bpl * 2;
-
-
- *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
-
-
- if( USE_RISC_NOOP_VIDEO )
- {
- for( i = 0; i < NUM_NO_OPS; i++ )
- {
- *(rp++) = cpu_to_le32(RISC_NOOP);
- }
- }
-
- /* scan lines */
- for (line = 0; line < lines; line++)
- {
- *(rp++) = cpu_to_le32(RISC_READ|RISC_SOL|RISC_EOL|bpl);
- *(rp++) = cpu_to_le32(dev->_data_buf_phys_addr_ch2+offset);
- *(rp++) = cpu_to_le32(0); /* bits 63-32 */
-
- if ( (lines <= NTSC_FIELD_HEIGHT) || (line < (NTSC_FIELD_HEIGHT-1)) || !(dev->_isNTSC_ch2) )
- {
- offset += dist_betwn_starts;
- }
- }
-
- return rp;
-}
-
-static __le32 *cx25821_risc_field_upstream_ch2( struct cx25821_dev *dev,
- __le32 *rp,
- dma_addr_t databuf_phys_addr,
- unsigned int offset, u32 sync_line, unsigned int bpl,
- unsigned int lines, int fifo_enable, int field_type)
-{
- unsigned int line, i;
- struct sram_channel *sram_ch = &dev->sram_channels[dev->_channel2_upstream_select];
- int dist_betwn_starts = bpl * 2;
-
-
- /* sync instruction */
- if (sync_line != NO_SYNC_LINE)
- {
- *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
- }
-
-
- if( USE_RISC_NOOP_VIDEO )
- {
- for( i = 0; i < NUM_NO_OPS; i++ )
- {
- *(rp++) = cpu_to_le32(RISC_NOOP);
- }
- }
-
- /* scan lines */
- for (line = 0; line < lines; line++)
- {
- *(rp++) = cpu_to_le32(RISC_READ|RISC_SOL|RISC_EOL|bpl);
- *(rp++) = cpu_to_le32(databuf_phys_addr+offset);
- *(rp++) = cpu_to_le32(0); /* bits 63-32 */
-
-
- if ( (lines <= NTSC_FIELD_HEIGHT) || (line < (NTSC_FIELD_HEIGHT-1)) || !(dev->_isNTSC_ch2) )
- {
- offset += dist_betwn_starts;
- }
-
-
- // check if we need to enable the FIFO after the first 4 lines
- // For the upstream video channel, the risc engine will enable the FIFO.
- if ( fifo_enable && line == 3 )
- {
- *(rp++) = RISC_WRITECR;
- *(rp++) = sram_ch->dma_ctl;
- *(rp++) = FLD_VID_FIFO_EN;
- *(rp++) = 0x00000001;
- }
- }
-
- return rp;
-}
-
-int cx25821_risc_buffer_upstream_ch2( struct cx25821_dev *dev, struct pci_dev *pci,
- unsigned int top_offset,
- unsigned int bpl, unsigned int lines)
-{
- __le32 *rp;
- int fifo_enable = 0;
- int singlefield_lines = lines >> 1; //get line count for single field
- int odd_num_lines = singlefield_lines;
- int frame = 0;
- int frame_size = 0;
- int databuf_offset = 0;
- int risc_program_size = 0;
- int risc_flag = RISC_CNT_RESET;
- unsigned int bottom_offset = bpl;
- dma_addr_t risc_phys_jump_addr;
-
-
- if( dev->_isNTSC_ch2 )
- {
- odd_num_lines = singlefield_lines + 1;
- risc_program_size = FRAME1_VID_PROG_SIZE;
- frame_size = (bpl == Y411_LINE_SZ) ? FRAME_SIZE_NTSC_Y411 : FRAME_SIZE_NTSC_Y422;
- }
- else
- {
- risc_program_size = PAL_VID_PROG_SIZE;
- frame_size = (bpl == Y411_LINE_SZ) ? FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422;
- }
-
-
- /* Virtual address of Risc buffer program */
- rp = dev->_dma_virt_addr_ch2;
-
- for( frame = 0; frame < NUM_FRAMES; frame++ )
- {
- databuf_offset = frame_size * frame;
-
-
- if (UNSET != top_offset)
- {
- fifo_enable = (frame == 0) ? FIFO_ENABLE : FIFO_DISABLE;
- rp = cx25821_risc_field_upstream_ch2(dev, rp, dev->_data_buf_phys_addr_ch2 + databuf_offset, top_offset, 0, bpl, odd_num_lines, fifo_enable, ODD_FIELD);
- }
-
- fifo_enable = FIFO_DISABLE;
-
-
- //Even field
- rp = cx25821_risc_field_upstream_ch2(dev, rp, dev->_data_buf_phys_addr_ch2 + databuf_offset, bottom_offset, 0x200, bpl, singlefield_lines, fifo_enable, EVEN_FIELD);
-
-
- if( frame == 0 )
- {
- risc_flag = RISC_CNT_RESET;
- risc_phys_jump_addr = dev->_dma_phys_start_addr_ch2 + risc_program_size;
- }
- else
- {
- risc_flag = RISC_CNT_INC;
- risc_phys_jump_addr = dev->_dma_phys_start_addr_ch2;
- }
-
-
- // Loop to 2ndFrameRISC or to Start of Risc program & generate IRQ
- *(rp++) = cpu_to_le32(RISC_JUMP|RISC_IRQ1|risc_flag);
- *(rp++) = cpu_to_le32(risc_phys_jump_addr);
- *(rp++) = cpu_to_le32(0);
- }
-
- return 0;
-}
-
-
-void cx25821_stop_upstream_video_ch2(struct cx25821_dev *dev)
-{
- struct sram_channel *sram_ch = &dev->sram_channels[VID_UPSTREAM_SRAM_CHANNEL_J];
- u32 tmp = 0;
-
- if( !dev->_is_running_ch2 )
- {
- printk("cx25821: No video file is currently running so return!\n");
- return;
- }
-
- //Disable RISC interrupts
- tmp = cx_read( sram_ch->int_msk );
- cx_write( sram_ch->int_msk, tmp & ~_intr_msk);
-
- //Turn OFF risc and fifo
- tmp = cx_read( sram_ch->dma_ctl );
- cx_write( sram_ch->dma_ctl, tmp & ~(FLD_VID_FIFO_EN | FLD_VID_RISC_EN) );
-
- //Clear data buffer memory
- if( dev->_data_buf_virt_addr_ch2 )
- memset( dev->_data_buf_virt_addr_ch2, 0, dev->_data_buf_size_ch2 );
-
- dev->_is_running_ch2 = 0;
- dev->_is_first_frame_ch2 = 0;
- dev->_frame_count_ch2 = 0;
- dev->_file_status_ch2 = END_OF_FILE;
-
- if( dev->_irq_queues_ch2 )
- {
- kfree(dev->_irq_queues_ch2);
- dev->_irq_queues_ch2 = NULL;
- }
-
- if( dev->_filename_ch2 != NULL )
- kfree(dev->_filename_ch2);
-
- tmp = cx_read( VID_CH_MODE_SEL );
- cx_write( VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
-}
-
-void cx25821_free_mem_upstream_ch2(struct cx25821_dev *dev)
-{
- if( dev->_is_running_ch2 )
- {
- cx25821_stop_upstream_video_ch2(dev);
- }
-
- if (dev->_dma_virt_addr_ch2)
- {
- pci_free_consistent(dev->pci, dev->_risc_size_ch2, dev->_dma_virt_addr_ch2, dev->_dma_phys_addr_ch2);
- dev->_dma_virt_addr_ch2 = NULL;
- }
-
- if (dev->_data_buf_virt_addr_ch2)
- {
- pci_free_consistent(dev->pci, dev->_data_buf_size_ch2, dev->_data_buf_virt_addr_ch2, dev->_data_buf_phys_addr_ch2);
- dev->_data_buf_virt_addr_ch2 = NULL;
- }
-}
-
-
-int cx25821_get_frame_ch2(struct cx25821_dev *dev, struct sram_channel *sram_ch )
-{
- struct file * myfile;
- int frame_index_temp = dev->_frame_index_ch2;
- int i = 0;
- int line_size = (dev->_pixel_format_ch2 == PIXEL_FRMT_411) ? Y411_LINE_SZ : Y422_LINE_SZ;
- int frame_size = 0;
- int frame_offset = 0;
- ssize_t vfs_read_retval = 0;
- char mybuf[line_size];
- loff_t file_offset;
- loff_t pos;
- mm_segment_t old_fs;
-
-
- if( dev->_file_status_ch2 == END_OF_FILE )
- return 0;
-
- if( dev->_isNTSC_ch2 )
- {
- frame_size = (line_size == Y411_LINE_SZ) ? FRAME_SIZE_NTSC_Y411 : FRAME_SIZE_NTSC_Y422;
- }
- else
- {
- frame_size = (line_size == Y411_LINE_SZ) ? FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422;
- }
-
- frame_offset = (frame_index_temp > 0) ? frame_size : 0;
- file_offset = dev->_frame_count_ch2 * frame_size;
-
-
- myfile = filp_open( dev->_filename_ch2, O_RDONLY | O_LARGEFILE, 0 );
-
-
- if (IS_ERR(myfile))
- {
- const int open_errno = -PTR_ERR(myfile);
- printk("%s(): ERROR opening file(%s) with errno = %d! \n", __func__, dev->_filename_ch2, open_errno);
- return PTR_ERR(myfile);
- }
- else
- {
- if( !(myfile->f_op) )
- {
- printk("%s: File has no file operations registered!", __func__);
- filp_close(myfile, NULL);
- return -EIO;
- }
-
-
- if( !myfile->f_op->read )
- {
- printk("%s: File has no READ operations registered!", __func__);
- filp_close(myfile, NULL);
- return -EIO;
- }
-
- pos = myfile->f_pos;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
-
-
- for( i = 0; i < dev->_lines_count_ch2; i++ )
- {
- pos = file_offset;
-
- vfs_read_retval = vfs_read(myfile, mybuf, line_size, &pos);
-
- if( vfs_read_retval > 0 && vfs_read_retval == line_size && dev->_data_buf_virt_addr_ch2 != NULL )
- {
- memcpy( (void*)(dev->_data_buf_virt_addr_ch2+frame_offset/4), mybuf, vfs_read_retval);
- }
-
- file_offset += vfs_read_retval;
- frame_offset += vfs_read_retval;
-
- if( vfs_read_retval < line_size )
- {
- printk(KERN_INFO "Done: exit %s() since no more bytes to read from Video file.\n", __func__ );
- break;
- }
- }
-
- if( i > 0 )
- dev->_frame_count_ch2++;
-
- dev->_file_status_ch2 = (vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE;
-
-
- set_fs(old_fs);
- filp_close(myfile, NULL);
- }
-
- return 0;
-}
-
-static void cx25821_vidups_handler_ch2(struct work_struct *work)
-{
- struct cx25821_dev *dev = container_of(work, struct cx25821_dev, _irq_work_entry_ch2);
-
- if( !dev )
- {
- printk("ERROR %s(): since container_of(work_struct) FAILED! \n", __func__ );
- return;
- }
-
- cx25821_get_frame_ch2( dev, &dev->sram_channels[dev->_channel2_upstream_select] );
-}
-
-
-int cx25821_openfile_ch2(struct cx25821_dev *dev, struct sram_channel *sram_ch)
-{
- struct file * myfile;
- int i = 0, j = 0;
- int line_size = (dev->_pixel_format_ch2 == PIXEL_FRMT_411) ? Y411_LINE_SZ : Y422_LINE_SZ;
- ssize_t vfs_read_retval = 0;
- char mybuf[line_size];
- loff_t pos;
- loff_t offset = (unsigned long)0;
- mm_segment_t old_fs;
-
-
- myfile = filp_open( dev->_filename_ch2, O_RDONLY | O_LARGEFILE, 0 );
-
-
- if (IS_ERR(myfile))
- {
- const int open_errno = -PTR_ERR(myfile);
- printk("%s(): ERROR opening file(%s) with errno = %d! \n", __func__, dev->_filename_ch2, open_errno);
- return PTR_ERR(myfile);
- }
- else
- {
- if( !(myfile->f_op) )
- {
- printk("%s: File has no file operations registered!", __func__);
- filp_close(myfile, NULL);
- return -EIO;
- }
-
-
- if( !myfile->f_op->read )
- {
- printk("%s: File has no READ operations registered! Returning.", __func__);
- filp_close(myfile, NULL);
- return -EIO;
- }
-
- pos = myfile->f_pos;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
-
-
- for( j = 0; j < NUM_FRAMES; j++ )
- {
- for( i = 0; i < dev->_lines_count_ch2; i++ )
- {
- pos = offset;
-
- vfs_read_retval = vfs_read(myfile, mybuf, line_size, &pos);
-
- if( vfs_read_retval > 0 && vfs_read_retval == line_size && dev->_data_buf_virt_addr_ch2 != NULL )
- {
- memcpy( (void*)(dev->_data_buf_virt_addr_ch2+offset/4), mybuf, vfs_read_retval);
- }
-
-
- offset += vfs_read_retval;
-
- if( vfs_read_retval < line_size )
- {
- printk(KERN_INFO "Done: exit %s() since no more bytes to read from Video file.\n", __func__ );
- break;
- }
- }
-
- if( i > 0 )
- dev->_frame_count_ch2++;
-
- if( vfs_read_retval < line_size )
- {
- break;
- }
- }
-
- dev->_file_status_ch2 = (vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE;
-
- set_fs(old_fs);
- myfile->f_pos = 0;
- filp_close(myfile, NULL);
- }
-
- return 0;
-}
-
-
-static int cx25821_upstream_buffer_prepare_ch2(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_ch2 != NULL )
- {
- pci_free_consistent(dev->pci, dev->upstream_riscbuf_size_ch2, dev->_dma_virt_addr_ch2, dev->_dma_phys_addr_ch2);
- }
-
- dev->_dma_virt_addr_ch2 = pci_alloc_consistent(dev->pci, dev->upstream_riscbuf_size_ch2, &dma_addr);
- dev->_dma_virt_start_addr_ch2 = dev->_dma_virt_addr_ch2;
- dev->_dma_phys_start_addr_ch2 = dma_addr;
- dev->_dma_phys_addr_ch2 = dma_addr;
- dev->_risc_size_ch2 = dev->upstream_riscbuf_size_ch2;
-
-
- if (!dev->_dma_virt_addr_ch2)
- {
- printk("cx25821: FAILED to allocate memory for Risc buffer! Returning.\n");
- return -ENOMEM;
- }
-
-
- //Iniitize at this address until n bytes to 0
- memset( dev->_dma_virt_addr_ch2, 0, dev->_risc_size_ch2 );
-
-
- if( dev->_data_buf_virt_addr_ch2 != NULL )
- {
- pci_free_consistent(dev->pci, dev->upstream_databuf_size_ch2, dev->_data_buf_virt_addr_ch2, dev->_data_buf_phys_addr_ch2);
- }
-
- //For Video Data buffer allocation
- dev->_data_buf_virt_addr_ch2 = pci_alloc_consistent(dev->pci, dev->upstream_databuf_size_ch2, &data_dma_addr);
- dev->_data_buf_phys_addr_ch2 = data_dma_addr;
- dev->_data_buf_size_ch2 = dev->upstream_databuf_size_ch2;
-
- if (!dev->_data_buf_virt_addr_ch2)
- {
- printk("cx25821: FAILED to allocate memory for data buffer! Returning.\n");
- return -ENOMEM;
- }
-
-
- //Initialize at this address until n bytes to 0
- memset( dev->_data_buf_virt_addr_ch2, 0, dev->_data_buf_size_ch2 );
-
-
- ret = cx25821_openfile_ch2(dev, sram_ch);
- if( ret < 0 )
- return ret;
-
-
- //Creating RISC programs
- ret = cx25821_risc_buffer_upstream_ch2(dev, dev->pci, 0, bpl, dev->_lines_count_ch2 );
- 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_ch2(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_ch2 = prog_cnt;
-
- queue_work(dev->_irq_queues_ch2, &dev->_irq_work_entry_ch2);
-
-
- if ( dev->_is_first_frame_ch2 )
- {
- dev->_is_first_frame_ch2 = 0;
-
- if( dev->_isNTSC_ch2 )
- {
- 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_ch2 != NULL )
- {
- line_size_in_bytes = (dev->_pixel_format_ch2 == PIXEL_FRMT_411) ? Y411_LINE_SZ : Y422_LINE_SZ;
- risc_phys_jump_addr = dev->_dma_phys_start_addr_ch2 + odd_risc_prog_size;
-
- rp = cx25821_update_riscprogram_ch2(dev, dev->_dma_virt_start_addr_ch2, 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);
- }
-
-
- if( dev->_file_status_ch2 == END_OF_FILE )
- {
- printk("cx25821: EOF Channel 2 Framecount = %d\n", dev->_frame_count_ch2 );
- 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_ch2(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_J;
-
- 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_ch2(dev, channel_num, vid_status);
- }
-
-
- if( handled < 0 )
- {
- cx25821_stop_upstream_video_ch2(dev);
- }
- else
- {
- handled += handled;
- }
-
- return IRQ_RETVAL(handled);
-}
-
-
-static void cx25821_set_pixelengine_ch2(struct cx25821_dev *dev, struct sram_channel *ch, int pix_format)
-{
- int width = WIDTH_D1;
- int height = dev->_lines_count_ch2;
- int num_lines, odd_num_lines;
- u32 value;
- int vip_mode = PIXEL_ENGINE_VIP1;
-
-
- value = ( (pix_format & 0x3) << 12 ) | ( vip_mode & 0x7 );
- value &= 0xFFFFFFEF;
- value |= dev->_isNTSC_ch2 ? 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_ch2)
- {
- 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_ch2(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_ch2);
- cx_write(sram_ch->cmds_start + 4, 0); /* Risc IPC High 64 bits 63-32 */
-
- /* 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_ch2, 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_ch2 = 1;
- dev->_is_first_frame_ch2 = 1;
-
- return 0;
-
-
-fail_irq:
- cx25821_dev_unregister(dev);
- return err;
-}
-
-
-int cx25821_vidupstream_init_ch2(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_ch2 )
- {
- printk("Video Channel is still running so return!\n");
- return 0;
- }
-
- dev->_channel2_upstream_select = channel_select;
- sram_ch = &dev->sram_channels[channel_select];
-
-
- INIT_WORK(&dev->_irq_work_entry_ch2, cx25821_vidups_handler_ch2);
- dev->_irq_queues_ch2 = create_singlethread_workqueue("cx25821_workqueue2");
-
- if(!dev->_irq_queues_ch2)
- {
- printk("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_ch2 = 0;
- dev->_frame_count_ch2 = 0;
- dev->_file_status_ch2 = RESET_STATUS;
- dev->_lines_count_ch2 = dev->_isNTSC_ch2 ? 480 : 576;
- dev->_pixel_format_ch2 = pixel_format;
- dev->_line_size_ch2 = (dev->_pixel_format_ch2 == PIXEL_FRMT_422) ? (WIDTH_D1 * 2) : (WIDTH_D1 * 3) / 2;
- data_frame_size = dev->_isNTSC_ch2 ? NTSC_DATA_BUF_SZ : PAL_DATA_BUF_SZ;
- risc_buffer_size = dev->_isNTSC_ch2 ? NTSC_RISC_BUF_SIZE : PAL_RISC_BUF_SIZE;
-
-
- if( dev->input_filename_ch2 )
- {
- str_length = strlen(dev->input_filename_ch2);
- dev->_filename_ch2 = (char *) kmalloc(str_length + 1, GFP_KERNEL);
-
- if( !dev->_filename_ch2 )
- goto error;
-
- memcpy(dev->_filename_ch2, dev->input_filename_ch2, str_length + 1);
- }
- else
- {
- str_length = strlen(dev->_defaultname_ch2);
- dev->_filename_ch2 = (char *) kmalloc(str_length + 1, GFP_KERNEL);
-
- if( !dev->_filename_ch2 )
- goto error;
-
- memcpy(dev->_filename_ch2, dev->_defaultname_ch2, str_length + 1);
- }
-
-
- //Default if filename is empty string
- if( strcmp(dev->input_filename_ch2,"") == 0)
- {
- if( dev->_isNTSC_ch2 )
- {
- dev->_filename_ch2 = (dev->_pixel_format_ch2 == PIXEL_FRMT_411) ? "/root/vid411.yuv" : "/root/vidtest.yuv";
- }
- else
- {
- dev->_filename_ch2 = (dev->_pixel_format_ch2 == PIXEL_FRMT_411) ? "/root/pal411.yuv" : "/root/pal422.yuv";
- }
- }
-
-
- retval = cx25821_sram_channel_setup_upstream(dev, sram_ch, dev->_line_size_ch2, 0);
-
-
- /* setup fifo + format */
- cx25821_set_pixelengine_ch2(dev, sram_ch, dev->_pixel_format_ch2);
-
- dev->upstream_riscbuf_size_ch2 = risc_buffer_size * 2;
- dev->upstream_databuf_size_ch2 = data_frame_size * 2;
-
-
- //Allocating buffers and prepare RISC program
- retval = cx25821_upstream_buffer_prepare_ch2(dev, sram_ch, dev->_line_size_ch2);
- if (retval < 0)
- {
- printk(KERN_ERR "%s: Failed to set up Video upstream buffers!\n", dev->name);
- goto error;
- }
-
-
- cx25821_start_video_dma_upstream_ch2(dev, sram_ch);
-
- return 0;
-
-error:
- cx25821_dev_unregister(dev);
-
- return err;
-}
-
+/* + * Driver for the Conexant CX25821 PCIe bridge + * + * Copyright (C) 2009 Conexant Systems Inc. + * Authors <hiep.huynh@conexant.com>, <shu.lin@conexant.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include "cx25821-video.h" +#include "cx25821-video-upstream-ch2.h" + +#include <linux/fs.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/syscalls.h> +#include <linux/file.h> +#include <linux/fcntl.h> +#include <asm/uaccess.h> + +MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards"); +MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>"); +MODULE_LICENSE("GPL"); + +static int _intr_msk = + FLD_VID_SRC_RISC1 | FLD_VID_SRC_UF | FLD_VID_SRC_SYNC | FLD_VID_SRC_OPC_ERR; + +static __le32 *cx25821_update_riscprogram_ch2(struct cx25821_dev *dev, + __le32 * rp, unsigned int offset, + unsigned int bpl, u32 sync_line, + unsigned int lines, + int fifo_enable, int field_type) +{ + unsigned int line, i; + int dist_betwn_starts = bpl * 2; + + *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line); + + if (USE_RISC_NOOP_VIDEO) { + for (i = 0; i < NUM_NO_OPS; i++) { + *(rp++) = cpu_to_le32(RISC_NOOP); + } + } + + /* scan lines */ + for (line = 0; line < lines; line++) { + *(rp++) = cpu_to_le32(RISC_READ | RISC_SOL | RISC_EOL | bpl); + *(rp++) = cpu_to_le32(dev->_data_buf_phys_addr_ch2 + offset); + *(rp++) = cpu_to_le32(0); /* bits 63-32 */ + + if ((lines <= NTSC_FIELD_HEIGHT) + || (line < (NTSC_FIELD_HEIGHT - 1)) + || !(dev->_isNTSC_ch2)) { + offset += dist_betwn_starts; + } + } + + return rp; +} + +static __le32 *cx25821_risc_field_upstream_ch2(struct cx25821_dev *dev, + __le32 * rp, + dma_addr_t databuf_phys_addr, + unsigned int offset, + u32 sync_line, unsigned int bpl, + unsigned int lines, + int fifo_enable, int field_type) +{ + unsigned int line, i; + struct sram_channel *sram_ch = + &dev->sram_channels[dev->_channel2_upstream_select]; + int dist_betwn_starts = bpl * 2; + + /* sync instruction */ + if (sync_line != NO_SYNC_LINE) { + *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line); + } + + if (USE_RISC_NOOP_VIDEO) { + for (i = 0; i < NUM_NO_OPS; i++) { + *(rp++) = cpu_to_le32(RISC_NOOP); + } + } + + /* scan lines */ + for (line = 0; line < lines; line++) { + *(rp++) = cpu_to_le32(RISC_READ | RISC_SOL | RISC_EOL | bpl); + *(rp++) = cpu_to_le32(databuf_phys_addr + offset); + *(rp++) = cpu_to_le32(0); /* bits 63-32 */ + + if ((lines <= NTSC_FIELD_HEIGHT) + || (line < (NTSC_FIELD_HEIGHT - 1)) + || !(dev->_isNTSC_ch2)) { + offset += dist_betwn_starts; + } + + // check if we need to enable the FIFO after the first 4 lines + // For the upstream video channel, the risc engine will enable the FIFO. + if (fifo_enable && line == 3) { + *(rp++) = RISC_WRITECR; + *(rp++) = sram_ch->dma_ctl; + *(rp++) = FLD_VID_FIFO_EN; + *(rp++) = 0x00000001; + } + } + + return rp; +} + +int cx25821_risc_buffer_upstream_ch2(struct cx25821_dev *dev, + struct pci_dev *pci, + unsigned int top_offset, unsigned int bpl, + unsigned int lines) +{ + __le32 *rp; + int fifo_enable = 0; + int singlefield_lines = lines >> 1; //get line count for single field + int odd_num_lines = singlefield_lines; + int frame = 0; + int frame_size = 0; + int databuf_offset = 0; + int risc_program_size = 0; + int risc_flag = RISC_CNT_RESET; + unsigned int bottom_offset = bpl; + dma_addr_t risc_phys_jump_addr; + + if (dev->_isNTSC_ch2) { + odd_num_lines = singlefield_lines + 1; + risc_program_size = FRAME1_VID_PROG_SIZE; + frame_size = + (bpl == + Y411_LINE_SZ) ? FRAME_SIZE_NTSC_Y411 : + FRAME_SIZE_NTSC_Y422; + } else { + risc_program_size = PAL_VID_PROG_SIZE; + frame_size = + (bpl == + Y411_LINE_SZ) ? FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422; + } + + /* Virtual address of Risc buffer program */ + rp = dev->_dma_virt_addr_ch2; + + for (frame = 0; frame < NUM_FRAMES; frame++) { + databuf_offset = frame_size * frame; + + if (UNSET != top_offset) { + fifo_enable = (frame == 0) ? FIFO_ENABLE : FIFO_DISABLE; + rp = cx25821_risc_field_upstream_ch2(dev, rp, + dev-> + _data_buf_phys_addr_ch2 + + databuf_offset, + top_offset, 0, bpl, + odd_num_lines, + fifo_enable, + ODD_FIELD); + } + + fifo_enable = FIFO_DISABLE; + + //Even field + rp = cx25821_risc_field_upstream_ch2(dev, rp, + dev-> + _data_buf_phys_addr_ch2 + + databuf_offset, + bottom_offset, 0x200, bpl, + singlefield_lines, + fifo_enable, EVEN_FIELD); + + if (frame == 0) { + risc_flag = RISC_CNT_RESET; + risc_phys_jump_addr = + dev->_dma_phys_start_addr_ch2 + risc_program_size; + } else { + risc_flag = RISC_CNT_INC; + risc_phys_jump_addr = dev->_dma_phys_start_addr_ch2; + } + + // Loop to 2ndFrameRISC or to Start of Risc program & generate IRQ + *(rp++) = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | risc_flag); + *(rp++) = cpu_to_le32(risc_phys_jump_addr); + *(rp++) = cpu_to_le32(0); + } + + return 0; +} + +void cx25821_stop_upstream_video_ch2(struct cx25821_dev *dev) +{ + struct sram_channel *sram_ch = + &dev->sram_channels[VID_UPSTREAM_SRAM_CHANNEL_J]; + u32 tmp = 0; + + if (!dev->_is_running_ch2) { + printk + ("cx25821: No video file is currently running so return!\n"); + return; + } + //Disable RISC interrupts + tmp = cx_read(sram_ch->int_msk); + cx_write(sram_ch->int_msk, tmp & ~_intr_msk); + + //Turn OFF risc and fifo + tmp = cx_read(sram_ch->dma_ctl); + cx_write(sram_ch->dma_ctl, tmp & ~(FLD_VID_FIFO_EN | FLD_VID_RISC_EN)); + + //Clear data buffer memory + if (dev->_data_buf_virt_addr_ch2) + memset(dev->_data_buf_virt_addr_ch2, 0, + dev->_data_buf_size_ch2); + + dev->_is_running_ch2 = 0; + dev->_is_first_frame_ch2 = 0; + dev->_frame_count_ch2 = 0; + dev->_file_status_ch2 = END_OF_FILE; + + if (dev->_irq_queues_ch2) { + kfree(dev->_irq_queues_ch2); + dev->_irq_queues_ch2 = NULL; + } + + if (dev->_filename_ch2 != NULL) + kfree(dev->_filename_ch2); + + tmp = cx_read(VID_CH_MODE_SEL); + cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00); +} + +void cx25821_free_mem_upstream_ch2(struct cx25821_dev *dev) +{ + if (dev->_is_running_ch2) { + cx25821_stop_upstream_video_ch2(dev); + } + + if (dev->_dma_virt_addr_ch2) { + pci_free_consistent(dev->pci, dev->_risc_size_ch2, + dev->_dma_virt_addr_ch2, + dev->_dma_phys_addr_ch2); + dev->_dma_virt_addr_ch2 = NULL; + } + + if (dev->_data_buf_virt_addr_ch2) { + pci_free_consistent(dev->pci, dev->_data_buf_size_ch2, + dev->_data_buf_virt_addr_ch2, + dev->_data_buf_phys_addr_ch2); + dev->_data_buf_virt_addr_ch2 = NULL; + } +} + +int cx25821_get_frame_ch2(struct cx25821_dev *dev, struct sram_channel *sram_ch) +{ + struct file *myfile; + int frame_index_temp = dev->_frame_index_ch2; + int i = 0; + int line_size = + (dev->_pixel_format_ch2 == + PIXEL_FRMT_411) ? Y411_LINE_SZ : Y422_LINE_SZ; + int frame_size = 0; + int frame_offset = 0; + ssize_t vfs_read_retval = 0; + char mybuf[line_size]; + loff_t file_offset; + loff_t pos; + mm_segment_t old_fs; + + if (dev->_file_status_ch2 == END_OF_FILE) + return 0; + + if (dev->_isNTSC_ch2) { + frame_size = + (line_size == + Y411_LINE_SZ) ? FRAME_SIZE_NTSC_Y411 : + FRAME_SIZE_NTSC_Y422; + } else { + frame_size = + (line_size == + Y411_LINE_SZ) ? FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422; + } + + frame_offset = (frame_index_temp > 0) ? frame_size : 0; + file_offset = dev->_frame_count_ch2 * frame_size; + + myfile = filp_open(dev->_filename_ch2, O_RDONLY | O_LARGEFILE, 0); + + if (IS_ERR(myfile)) { + const int open_errno = -PTR_ERR(myfile); + printk("%s(): ERROR opening file(%s) with errno = %d! \n", + __func__, dev->_filename_ch2, open_errno); + return PTR_ERR(myfile); + } else { + if (!(myfile->f_op)) { + printk("%s: File has no file operations registered!", + __func__); + filp_close(myfile, NULL); + return -EIO; + } + + if (!myfile->f_op->read) { + printk("%s: File has no READ operations registered!", + __func__); + filp_close(myfile, NULL); + return -EIO; + } + + pos = myfile->f_pos; + old_fs = get_fs(); + set_fs(KERNEL_DS); + + for (i = 0; i < dev->_lines_count_ch2; i++) { + pos = file_offset; + + vfs_read_retval = + vfs_read(myfile, mybuf, line_size, &pos); + + if (vfs_read_retval > 0 && vfs_read_retval == line_size + && dev->_data_buf_virt_addr_ch2 != NULL) { + memcpy((void *)(dev->_data_buf_virt_addr_ch2 + + frame_offset / 4), mybuf, + vfs_read_retval); + } + + file_offset += vfs_read_retval; + frame_offset += vfs_read_retval; + + if (vfs_read_retval < line_size) { + printk(KERN_INFO + "Done: exit %s() since no more bytes to read from Video file.\n", + __func__); + break; + } + } + + if (i > 0) + dev->_frame_count_ch2++; + + dev->_file_status_ch2 = + (vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE; + + set_fs(old_fs); + filp_close(myfile, NULL); + } + + return 0; +} + +static void cx25821_vidups_handler_ch2(struct work_struct *work) +{ + struct cx25821_dev *dev = + container_of(work, struct cx25821_dev, _irq_work_entry_ch2); + + if (!dev) { + printk("ERROR %s(): since container_of(work_struct) FAILED! \n", + __func__); + return; + } + + cx25821_get_frame_ch2(dev, + &dev->sram_channels[dev-> + _channel2_upstream_select]); +} + +int cx25821_openfile_ch2(struct cx25821_dev *dev, struct sram_channel *sram_ch) +{ + struct file *myfile; + int i = 0, j = 0; + int line_size = + (dev->_pixel_format_ch2 == + PIXEL_FRMT_411) ? Y411_LINE_SZ : Y422_LINE_SZ; + ssize_t vfs_read_retval = 0; + char mybuf[line_size]; + loff_t pos; + loff_t offset = (unsigned long)0; + mm_segment_t old_fs; + + myfile = filp_open(dev->_filename_ch2, O_RDONLY | O_LARGEFILE, 0); + + if (IS_ERR(myfile)) { + const int open_errno = -PTR_ERR(myfile); + printk("%s(): ERROR opening file(%s) with errno = %d! \n", + __func__, dev->_filename_ch2, open_errno); + return PTR_ERR(myfile); + } else { + if (!(myfile->f_op)) { + printk("%s: File has no file operations registered!", + __func__); + filp_close(myfile, NULL); + return -EIO; + } + + if (!myfile->f_op->read) { + printk + ("%s: File has no READ operations registered! Returning.", + __func__); + filp_close(myfile, NULL); + return -EIO; + } + + pos = myfile->f_pos; + old_fs = get_fs(); + set_fs(KERNEL_DS); + + for (j = 0; j < NUM_FRAMES; j++) { + for (i = 0; i < dev->_lines_count_ch2; i++) { + pos = offset; + + vfs_read_retval = + vfs_read(myfile, mybuf, line_size, &pos); + + if (vfs_read_retval > 0 + && vfs_read_retval == line_size + && dev->_data_buf_virt_addr_ch2 != NULL) { + memcpy((void *)(dev-> + _data_buf_virt_addr_ch2 + + offset / 4), mybuf, + vfs_read_retval); + } + + offset += vfs_read_retval; + + if (vfs_read_retval < line_size) { + printk(KERN_INFO + "Done: exit %s() since no more bytes to read from Video file.\n", + __func__); + break; + } + } + + if (i > 0) + dev->_frame_count_ch2++; + + if (vfs_read_retval < line_size) { + break; + } + } + + dev->_file_status_ch2 = + (vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE; + + set_fs(old_fs); + myfile->f_pos = 0; + filp_close(myfile, NULL); + } + + return 0; +} + +static int cx25821_upstream_buffer_prepare_ch2(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_ch2 != NULL) { + pci_free_consistent(dev->pci, dev->upstream_riscbuf_size_ch2, + dev->_dma_virt_addr_ch2, + dev->_dma_phys_addr_ch2); + } + + dev->_dma_virt_addr_ch2 = + pci_alloc_consistent(dev->pci, dev->upstream_riscbuf_size_ch2, + &dma_addr); + dev->_dma_virt_start_addr_ch2 = dev->_dma_virt_addr_ch2; + dev->_dma_phys_start_addr_ch2 = dma_addr; + dev->_dma_phys_addr_ch2 = dma_addr; + dev->_risc_size_ch2 = dev->upstream_riscbuf_size_ch2; + + if (!dev->_dma_virt_addr_ch2) { + printk + ("cx25821: FAILED to allocate memory for Risc buffer! Returning.\n"); + return -ENOMEM; + } + + //Iniitize at this address until n bytes to 0 + memset(dev->_dma_virt_addr_ch2, 0, dev->_risc_size_ch2); + + if (dev->_data_buf_virt_addr_ch2 != NULL) { + pci_free_consistent(dev->pci, dev->upstream_databuf_size_ch2, + dev->_data_buf_virt_addr_ch2, + dev->_data_buf_phys_addr_ch2); + } + //For Video Data buffer allocation + dev->_data_buf_virt_addr_ch2 = + pci_alloc_consistent(dev->pci, dev->upstream_databuf_size_ch2, + &data_dma_addr); + dev->_data_buf_phys_addr_ch2 = data_dma_addr; + dev->_data_buf_size_ch2 = dev->upstream_databuf_size_ch2; + + if (!dev->_data_buf_virt_addr_ch2) { + printk + ("cx25821: FAILED to allocate memory for data buffer! Returning.\n"); + return -ENOMEM; + } + + //Initialize at this address until n bytes to 0 + memset(dev->_data_buf_virt_addr_ch2, 0, dev->_data_buf_size_ch2); + + ret = cx25821_openfile_ch2(dev, sram_ch); + if (ret < 0) + return ret; + + //Creating RISC programs + ret = + cx25821_risc_buffer_upstream_ch2(dev, dev->pci, 0, bpl, + dev->_lines_count_ch2); + 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_ch2(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_ch2 = prog_cnt; + + queue_work(dev->_irq_queues_ch2, &dev->_irq_work_entry_ch2); + + if (dev->_is_first_frame_ch2) { + dev->_is_first_frame_ch2 = 0; + + if (dev->_isNTSC_ch2) { + 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_ch2 != NULL) { + line_size_in_bytes = + (dev->_pixel_format_ch2 == + PIXEL_FRMT_411) ? Y411_LINE_SZ : + Y422_LINE_SZ; + risc_phys_jump_addr = + dev->_dma_phys_start_addr_ch2 + + odd_risc_prog_size; + + rp = cx25821_update_riscprogram_ch2(dev, + dev-> + _dma_virt_start_addr_ch2, + 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); + } + + if (dev->_file_status_ch2 == END_OF_FILE) { + printk("cx25821: EOF Channel 2 Framecount = %d\n", + dev->_frame_count_ch2); + 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_ch2(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_J; + + 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_ch2(dev, channel_num, + vid_status); + } + + if (handled < 0) { + cx25821_stop_upstream_video_ch2(dev); + } else { + handled += handled; + } + + return IRQ_RETVAL(handled); +} + +static void cx25821_set_pixelengine_ch2(struct cx25821_dev *dev, + struct sram_channel *ch, int pix_format) +{ + int width = WIDTH_D1; + int height = dev->_lines_count_ch2; + int num_lines, odd_num_lines; + u32 value; + int vip_mode = PIXEL_ENGINE_VIP1; + + value = ((pix_format & 0x3) << 12) | (vip_mode & 0x7); + value &= 0xFFFFFFEF; + value |= dev->_isNTSC_ch2 ? 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_ch2) { + 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_ch2(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_ch2); + cx_write(sram_ch->cmds_start + 4, 0); /* Risc IPC High 64 bits 63-32 */ + + /* 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_ch2, + 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_ch2 = 1; + dev->_is_first_frame_ch2 = 1; + + return 0; + + fail_irq: + cx25821_dev_unregister(dev); + return err; +} + +int cx25821_vidupstream_init_ch2(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_ch2) { + printk("Video Channel is still running so return!\n"); + return 0; + } + + dev->_channel2_upstream_select = channel_select; + sram_ch = &dev->sram_channels[channel_select]; + + INIT_WORK(&dev->_irq_work_entry_ch2, cx25821_vidups_handler_ch2); + dev->_irq_queues_ch2 = + create_singlethread_workqueue("cx25821_workqueue2"); + + if (!dev->_irq_queues_ch2) { + printk + ("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_ch2 = 0; + dev->_frame_count_ch2 = 0; + dev->_file_status_ch2 = RESET_STATUS; + dev->_lines_count_ch2 = dev->_isNTSC_ch2 ? 480 : 576; + dev->_pixel_format_ch2 = pixel_format; + dev->_line_size_ch2 = + (dev->_pixel_format_ch2 == + PIXEL_FRMT_422) ? (WIDTH_D1 * 2) : (WIDTH_D1 * 3) / 2; + data_frame_size = dev->_isNTSC_ch2 ? NTSC_DATA_BUF_SZ : PAL_DATA_BUF_SZ; + risc_buffer_size = + dev->_isNTSC_ch2 ? NTSC_RISC_BUF_SIZE : PAL_RISC_BUF_SIZE; + + if (dev->input_filename_ch2) { + str_length = strlen(dev->input_filename_ch2); + dev->_filename_ch2 = + (char *)kmalloc(str_length + 1, GFP_KERNEL); + + if (!dev->_filename_ch2) + goto error; + + memcpy(dev->_filename_ch2, dev->input_filename_ch2, + str_length + 1); + } else { + str_length = strlen(dev->_defaultname_ch2); + dev->_filename_ch2 = + (char *)kmalloc(str_length + 1, GFP_KERNEL); + + if (!dev->_filename_ch2) + goto error; + + memcpy(dev->_filename_ch2, dev->_defaultname_ch2, + str_length + 1); + } + + //Default if filename is empty string + if (strcmp(dev->input_filename_ch2, "") == 0) { + if (dev->_isNTSC_ch2) { + dev->_filename_ch2 = + (dev->_pixel_format_ch2 == + PIXEL_FRMT_411) ? "/root/vid411.yuv" : + "/root/vidtest.yuv"; + } else { + dev->_filename_ch2 = + (dev->_pixel_format_ch2 == + PIXEL_FRMT_411) ? "/root/pal411.yuv" : + "/root/pal422.yuv"; + } + } + + retval = + cx25821_sram_channel_setup_upstream(dev, sram_ch, + dev->_line_size_ch2, 0); + + /* setup fifo + format */ + cx25821_set_pixelengine_ch2(dev, sram_ch, dev->_pixel_format_ch2); + + dev->upstream_riscbuf_size_ch2 = risc_buffer_size * 2; + dev->upstream_databuf_size_ch2 = data_frame_size * 2; + + //Allocating buffers and prepare RISC program + retval = + cx25821_upstream_buffer_prepare_ch2(dev, sram_ch, + dev->_line_size_ch2); + if (retval < 0) { + printk(KERN_ERR + "%s: Failed to set up Video upstream buffers!\n", + dev->name); + goto error; + } + + cx25821_start_video_dma_upstream_ch2(dev, sram_ch); + + return 0; + + error: + cx25821_dev_unregister(dev); + + return err; +} |