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path: root/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c
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Diffstat (limited to 'drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c')
-rw-r--r--drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c802
1 files changed, 802 insertions, 0 deletions
diff --git a/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c b/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c
new file mode 100644
index 000000000000..c8c94fbf5d8d
--- /dev/null
+++ b/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c
@@ -0,0 +1,802 @@
+/*
+ * 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;
+}
+
+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;
+ }
+}
+
+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);
+}
+
+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;
+}
+
+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);
+}
+
+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 retval = 0;
+ int err = 0;
+ int data_frame_size = 0;
+ int risc_buffer_size = 0;
+ int str_length = 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) {
+ str_length = strlen(dev->input_filename_ch2);
+ dev->_filename_ch2 = kmemdup(dev->input_filename_ch2,
+ str_length + 1, GFP_KERNEL);
+
+ if (!dev->_filename_ch2)
+ goto error;
+ } else {
+ str_length = strlen(dev->_defaultname_ch2);
+ dev->_filename_ch2 = kmemdup(dev->_defaultname_ch2,
+ str_length + 1, GFP_KERNEL);
+
+ if (!dev->_filename_ch2)
+ goto error;
+ }
+
+ /* 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) {
+ 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;
+}

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