| /* |
| * 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.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 <linux/slab.h> |
| #include <linux/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; |
| |
| int cx25821_sram_channel_setup_upstream(struct cx25821_dev *dev, |
| struct sram_channel *ch, |
| unsigned int bpl, u32 risc) |
| { |
| unsigned int i, lines; |
| u32 cdt; |
| |
| if (ch->cmds_start == 0) { |
| cx_write(ch->ptr1_reg, 0); |
| cx_write(ch->ptr2_reg, 0); |
| cx_write(ch->cnt2_reg, 0); |
| cx_write(ch->cnt1_reg, 0); |
| return 0; |
| } |
| |
| bpl = (bpl + 7) & ~7; /* alignment */ |
| cdt = ch->cdt; |
| lines = ch->fifo_size / bpl; |
| |
| if (lines > 4) |
| lines = 4; |
| |
| BUG_ON(lines < 2); |
| |
| /* write CDT */ |
| for (i = 0; i < lines; i++) { |
| cx_write(cdt + 16 * i, ch->fifo_start + bpl * i); |
| cx_write(cdt + 16 * i + 4, 0); |
| cx_write(cdt + 16 * i + 8, 0); |
| cx_write(cdt + 16 * i + 12, 0); |
| } |
| |
| /* write CMDS */ |
| cx_write(ch->cmds_start + 0, risc); |
| |
| cx_write(ch->cmds_start + 4, 0); |
| cx_write(ch->cmds_start + 8, cdt); |
| cx_write(ch->cmds_start + 12, (lines * 16) >> 3); |
| cx_write(ch->cmds_start + 16, ch->ctrl_start); |
| |
| cx_write(ch->cmds_start + 20, VID_IQ_SIZE_DW); |
| |
| for (i = 24; i < 80; i += 4) |
| cx_write(ch->cmds_start + i, 0); |
| |
| /* fill registers */ |
| cx_write(ch->ptr1_reg, ch->fifo_start); |
| cx_write(ch->ptr2_reg, cdt); |
| cx_write(ch->cnt2_reg, (lines * 16) >> 3); |
| cx_write(ch->cnt1_reg, (bpl >> 3) - 1); |
| |
| return 0; |
| } |
| |
| static __le32 *cx25821_update_riscprogram(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 + offset); |
| *(rp++) = cpu_to_le32(0); /* bits 63-32 */ |
| |
| if ((lines <= NTSC_FIELD_HEIGHT) |
| || (line < (NTSC_FIELD_HEIGHT - 1)) || !(dev->_isNTSC)) { |
| offset += dist_betwn_starts; |
| } |
| } |
| |
| return rp; |
| } |
| |
| static __le32 *cx25821_risc_field_upstream(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->_channel_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)) |
| /* to skip the other field line */ |
| 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(struct cx25821_dev *dev, |
| struct pci_dev *pci, |
| unsigned int top_offset, |
| unsigned int bpl, unsigned int lines) |
| { |
| __le32 *rp; |
| int fifo_enable = 0; |
| /* get line count for single field */ |
| int singlefield_lines = lines >> 1; |
| 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) { |
| 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; |
| |
| 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(dev, rp, |
| dev-> |
| _data_buf_phys_addr + |
| databuf_offset, |
| top_offset, 0, bpl, |
| odd_num_lines, |
| fifo_enable, |
| ODD_FIELD); |
| } |
| |
| fifo_enable = FIFO_DISABLE; |
| |
| /* Even Field */ |
| rp = cx25821_risc_field_upstream(dev, rp, |
| dev->_data_buf_phys_addr + |
| 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 + risc_program_size; |
| } else { |
| risc_phys_jump_addr = dev->_dma_phys_start_addr; |
| risc_flag = RISC_CNT_INC; |
| } |
| |
| /* 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_ch1(struct cx25821_dev *dev) |
| { |
| struct sram_channel *sram_ch = |
| &dev->sram_channels[VID_UPSTREAM_SRAM_CHANNEL_I]; |
| u32 tmp = 0; |
| |
| if (!dev->_is_running) { |
| printk |
| (KERN_INFO "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 enable */ |
| 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) |
| memset(dev->_data_buf_virt_addr, 0, dev->_data_buf_size); |
| |
| dev->_is_running = 0; |
| dev->_is_first_frame = 0; |
| dev->_frame_count = 0; |
| dev->_file_status = END_OF_FILE; |
| |
| if (dev->_irq_queues) { |
| kfree(dev->_irq_queues); |
| dev->_irq_queues = NULL; |
| } |
| |
| if (dev->_filename != NULL) |
| kfree(dev->_filename); |
| |
| tmp = cx_read(VID_CH_MODE_SEL); |
| cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00); |
| } |
| |
| void cx25821_free_mem_upstream_ch1(struct cx25821_dev *dev) |
| { |
| if (dev->_is_running) |
| cx25821_stop_upstream_video_ch1(dev); |
| |
| if (dev->_dma_virt_addr) { |
| pci_free_consistent(dev->pci, dev->_risc_size, |
| dev->_dma_virt_addr, dev->_dma_phys_addr); |
| dev->_dma_virt_addr = NULL; |
| } |
| |
| if (dev->_data_buf_virt_addr) { |
| pci_free_consistent(dev->pci, dev->_data_buf_size, |
| dev->_data_buf_virt_addr, |
| dev->_data_buf_phys_addr); |
| dev->_data_buf_virt_addr = NULL; |
| } |
| } |
| |
| int cx25821_get_frame(struct cx25821_dev *dev, struct sram_channel *sram_ch) |
| { |
| struct file *myfile; |
| int frame_index_temp = dev->_frame_index; |
| int i = 0; |
| int line_size = |
| (dev->_pixel_format == |
| 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 == END_OF_FILE) |
| return 0; |
| |
| if (dev->_isNTSC) { |
| 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 * frame_size; |
| |
| myfile = filp_open(dev->_filename, O_RDONLY | O_LARGEFILE, 0); |
| |
| if (IS_ERR(myfile)) { |
| const int open_errno = -PTR_ERR(myfile); |
| printk(KERN_ERR "%s(): ERROR opening file(%s) with errno = %d!\n", |
| __func__, dev->_filename, open_errno); |
| return PTR_ERR(myfile); |
| } else { |
| if (!(myfile->f_op)) { |
| printk(KERN_ERR "%s: File has no file operations registered!", |
| __func__); |
| filp_close(myfile, NULL); |
| return -EIO; |
| } |
| |
| if (!myfile->f_op->read) { |
| printk(KERN_ERR "%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; 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 != NULL) { |
| memcpy((void *)(dev->_data_buf_virt_addr + |
| 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++; |
| |
| dev->_file_status = |
| (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(struct work_struct *work) |
| { |
| struct cx25821_dev *dev = |
| container_of(work, struct cx25821_dev, _irq_work_entry); |
| |
| if (!dev) { |
| printk(KERN_ERR "ERROR %s(): since container_of(work_struct) FAILED!\n", |
| __func__); |
| return; |
| } |
| |
| cx25821_get_frame(dev, |
| &dev->sram_channels[dev->_channel_upstream_select]); |
| } |
| |
| int cx25821_openfile(struct cx25821_dev *dev, struct sram_channel *sram_ch) |
| { |
| struct file *myfile; |
| int i = 0, j = 0; |
| int line_size = |
| (dev->_pixel_format == |
| 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, O_RDONLY | O_LARGEFILE, 0); |
| |
| if (IS_ERR(myfile)) { |
| const int open_errno = -PTR_ERR(myfile); |
| printk(KERN_ERR "%s(): ERROR opening file(%s) with errno = %d!\n", |
| __func__, dev->_filename, open_errno); |
| return PTR_ERR(myfile); |
| } else { |
| if (!(myfile->f_op)) { |
| printk(KERN_ERR "%s: File has no file operations registered!", |
| __func__); |
| filp_close(myfile, NULL); |
| return -EIO; |
| } |
| |
| if (!myfile->f_op->read) { |
| printk |
| (KERN_ERR "%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; 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 != NULL) { |
| memcpy((void *)(dev-> |
| _data_buf_virt_addr + |
| 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++; |
| |
| if (vfs_read_retval < line_size) |
| break; |
| } |
| |
| dev->_file_status = |
| (vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE; |
| |
| set_fs(old_fs); |
| 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; |
| } |