diff options
Diffstat (limited to 'drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c')
| -rw-r--r-- | drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c | 800 |
1 files changed, 0 insertions, 800 deletions
diff --git a/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c b/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c deleted file mode 100644 index cf2723c7197f..000000000000 --- a/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c +++ /dev/null @@ -1,800 +0,0 @@ -/* - * 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. - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#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 <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; - -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->channels[dev->_channel2_upstream_select].sram_channels; - 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; -} - -static 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; - if (bpl == Y411_LINE_SZ) - frame_size = FRAME_SIZE_NTSC_Y411; - else - frame_size = FRAME_SIZE_NTSC_Y422; - } else { - risc_program_size = PAL_VID_PROG_SIZE; - if (bpl == Y411_LINE_SZ) - frame_size = FRAME_SIZE_PAL_Y411; - else - frame_size = 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->channels[VID_UPSTREAM_SRAM_CHANNEL_J].sram_channels; - u32 tmp = 0; - - if (!dev->_is_running_ch2) { - pr_info("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; - - kfree(dev->_irq_queues_ch2); - dev->_irq_queues_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; - } -} - -static 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); - pr_err("%s(): ERROR opening file(%s) with errno = %d!\n", - __func__, dev->_filename_ch2, open_errno); - return PTR_ERR(myfile); - } else { - if (!(myfile->f_op)) { - pr_err("%s(): File has no file operations registered!\n", - __func__); - filp_close(myfile, NULL); - return -EIO; - } - - if (!myfile->f_op->read) { - pr_err("%s(): File has no READ operations registered!\n", - __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) { - pr_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) { - pr_err("ERROR %s(): since container_of(work_struct) FAILED!\n", - __func__); - return; - } - - cx25821_get_frame_ch2(dev, dev->channels[dev-> - _channel2_upstream_select].sram_channels); -} - -static 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); - pr_err("%s(): ERROR opening file(%s) with errno = %d!\n", - __func__, dev->_filename_ch2, open_errno); - return PTR_ERR(myfile); - } else { - if (!(myfile->f_op)) { - pr_err("%s(): File has no file operations registered!\n", - __func__); - filp_close(myfile, NULL); - return -EIO; - } - - if (!myfile->f_op->read) { - pr_err("%s(): File has no READ operations registered! Returning\n", - __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) { - pr_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) { - pr_err("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) { - pr_err("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) { - pr_info("Failed creating Video Upstream Risc programs!\n"); - goto error; - } - - return 0; - -error: - return ret; -} - -static int cx25821_video_upstream_irq_ch2(struct cx25821_dev *dev, - int chan_num, - u32 status) -{ - u32 int_msk_tmp; - struct sram_channel *channel = dev->channels[chan_num].sram_channels; - 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) { - if (dev->_pixel_format_ch2 == PIXEL_FRMT_411) - line_size_in_bytes = Y411_LINE_SZ; - else - line_size_in_bytes = 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) { - pr_info("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 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->channels[channel_num].sram_channels; - - 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); -} - -static 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, dev->name, dev); - if (err < 0) { - pr_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 err = 0; - int data_frame_size = 0; - int risc_buffer_size = 0; - - if (dev->_is_running_ch2) { - pr_info("Video Channel is still running so return!\n"); - return 0; - } - - dev->_channel2_upstream_select = channel_select; - sram_ch = dev->channels[channel_select].sram_channels; - - 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) { - pr_err("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) - dev->_filename_ch2 = kstrdup(dev->input_filename_ch2, - GFP_KERNEL); - else - dev->_filename_ch2 = kstrdup(dev->_defaultname_ch2, - GFP_KERNEL); - - if (!dev->_filename_ch2) { - err = -ENOENT; - goto error; - } - - /* Default if filename is empty string */ - if (strcmp(dev->_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"; - } - } - - err = 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 */ - err = cx25821_upstream_buffer_prepare_ch2(dev, sram_ch, - dev->_line_size_ch2); - if (err < 0) { - pr_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; -} |