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Diffstat (limited to 'drivers/staging/cx25821/cx25821-video-upstream-ch2.c')
-rw-r--r--drivers/staging/cx25821/cx25821-video-upstream-ch2.c91
1 files changed, 56 insertions, 35 deletions
diff --git a/drivers/staging/cx25821/cx25821-video-upstream-ch2.c b/drivers/staging/cx25821/cx25821-video-upstream-ch2.c
index 343df6619fe8..d12dbb572e8b 100644
--- a/drivers/staging/cx25821/cx25821-video-upstream-ch2.c
+++ b/drivers/staging/cx25821/cx25821-video-upstream-ch2.c
@@ -84,7 +84,7 @@ static __le32 *cx25821_risc_field_upstream_ch2(struct cx25821_dev *dev,
{
unsigned int line, i;
struct sram_channel *sram_ch =
- &dev->sram_channels[dev->_channel2_upstream_select];
+ dev->channels[dev->_channel2_upstream_select].sram_channels;
int dist_betwn_starts = bpl * 2;
/* sync instruction */
@@ -110,8 +110,11 @@ static __le32 *cx25821_risc_field_upstream_ch2(struct cx25821_dev *dev,
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.
+ /*
+ 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;
@@ -130,7 +133,7 @@ int cx25821_risc_buffer_upstream_ch2(struct cx25821_dev *dev,
{
__le32 *rp;
int fifo_enable = 0;
- int singlefield_lines = lines >> 1; //get line count for single field
+ int singlefield_lines = lines >> 1; /*get line count for single field */
int odd_num_lines = singlefield_lines;
int frame = 0;
int frame_size = 0;
@@ -174,7 +177,7 @@ int cx25821_risc_buffer_upstream_ch2(struct cx25821_dev *dev,
fifo_enable = FIFO_DISABLE;
- //Even field
+ /* Even field */
rp = cx25821_risc_field_upstream_ch2(dev, rp,
dev->
_data_buf_phys_addr_ch2 +
@@ -192,7 +195,10 @@ int cx25821_risc_buffer_upstream_ch2(struct cx25821_dev *dev,
risc_phys_jump_addr = dev->_dma_phys_start_addr_ch2;
}
- // Loop to 2ndFrameRISC or to Start of Risc program & generate IRQ
+ /*
+ 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);
@@ -204,7 +210,7 @@ int cx25821_risc_buffer_upstream_ch2(struct cx25821_dev *dev,
void cx25821_stop_upstream_video_ch2(struct cx25821_dev *dev)
{
struct sram_channel *sram_ch =
- &dev->sram_channels[VID_UPSTREAM_SRAM_CHANNEL_J];
+ dev->channels[VID_UPSTREAM_SRAM_CHANNEL_J].sram_channels;
u32 tmp = 0;
if (!dev->_is_running_ch2) {
@@ -212,15 +218,15 @@ void cx25821_stop_upstream_video_ch2(struct cx25821_dev *dev)
("cx25821: No video file is currently running so return!\n");
return;
}
- //Disable RISC interrupts
+ /* Disable RISC interrupts */
tmp = cx_read(sram_ch->int_msk);
cx_write(sram_ch->int_msk, tmp & ~_intr_msk);
- //Turn OFF risc and fifo
+ /* 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
+ /* Clear data buffer memory */
if (dev->_data_buf_virt_addr_ch2)
memset(dev->_data_buf_virt_addr_ch2, 0,
dev->_data_buf_size_ch2);
@@ -371,8 +377,8 @@ static void cx25821_vidups_handler_ch2(struct work_struct *work)
}
cx25821_get_frame_ch2(dev,
- &dev->sram_channels[dev->
- _channel2_upstream_select]);
+ dev->channels[dev->
+ _channel2_upstream_select].sram_channels);
}
int cx25821_openfile_ch2(struct cx25821_dev *dev, struct sram_channel *sram_ch)
@@ -488,7 +494,7 @@ static int cx25821_upstream_buffer_prepare_ch2(struct cx25821_dev *dev,
return -ENOMEM;
}
- //Iniitize at this address until n bytes to 0
+ /* 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) {
@@ -496,7 +502,7 @@ static int cx25821_upstream_buffer_prepare_ch2(struct cx25821_dev *dev,
dev->_data_buf_virt_addr_ch2,
dev->_data_buf_phys_addr_ch2);
}
- //For Video Data buffer allocation
+ /* For Video Data buffer allocation */
dev->_data_buf_virt_addr_ch2 =
pci_alloc_consistent(dev->pci, dev->upstream_databuf_size_ch2,
&data_dma_addr);
@@ -509,14 +515,14 @@ static int cx25821_upstream_buffer_prepare_ch2(struct cx25821_dev *dev,
return -ENOMEM;
}
- //Initialize at this address until n bytes to 0
+ /* 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
+ /* Creating RISC programs */
ret =
cx25821_risc_buffer_upstream_ch2(dev, dev->pci, 0, bpl,
dev->_lines_count_ch2);
@@ -536,7 +542,7 @@ 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];
+ 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;
@@ -544,10 +550,13 @@ int cx25821_video_upstream_irq_ch2(struct cx25821_dev *dev, int chan_num,
__le32 *rp;
if (status & FLD_VID_SRC_RISC1) {
- // We should only process one program per call
+ /* 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
+ /*
+ 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);
@@ -588,7 +597,7 @@ int cx25821_video_upstream_irq_ch2(struct cx25821_dev *dev, int chan_num,
FIFO_DISABLE,
ODD_FIELD);
- // Jump to Even Risc program of 1st Frame
+ /* 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);
@@ -603,7 +612,7 @@ int cx25821_video_upstream_irq_ch2(struct cx25821_dev *dev, int chan_num,
dev->_frame_count_ch2);
return -1;
}
- //ElSE, set the interrupt mask register, re-enable irq.
+ /* 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);
@@ -623,12 +632,12 @@ static irqreturn_t cx25821_upstream_irq_ch2(int irq, void *dev_id)
channel_num = VID_UPSTREAM_SRAM_CHANNEL_J;
- sram_ch = &dev->sram_channels[channel_num];
+ sram_ch = dev->channels[channel_num].sram_channels;
msk_stat = cx_read(sram_ch->int_mstat);
vid_status = cx_read(sram_ch->int_stat);
- // Only deal with our interrupt
+ /* Only deal with our interrupt */
if (vid_status) {
handled =
cx25821_video_upstream_irq_ch2(dev, channel_num,
@@ -658,7 +667,10 @@ static void cx25821_set_pixelengine_ch2(struct cx25821_dev *dev,
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
+ /*
+ 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;
@@ -670,7 +682,7 @@ static void cx25821_set_pixelengine_ch2(struct cx25821_dev *dev,
value = (num_lines << 16) | odd_num_lines;
- // set number of active lines in field 0 (top) and field 1 (bottom)
+ /* 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);
@@ -682,21 +694,27 @@ int cx25821_start_video_dma_upstream_ch2(struct cx25821_dev *dev,
u32 tmp = 0;
int err = 0;
- // 656/VIP SRC Upstream Channel I & J and 7 - Host Bus Interface for channel A-C
+ /*
+ 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.
+ /*
+ 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 */
+ 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.
+ /* Clear our bits from the interrupt status register. */
cx_write(sram_ch->int_stat, _intr_msk);
- //Set the interrupt mask register, enable irq.
+ /* 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);
@@ -709,7 +727,7 @@ int cx25821_start_video_dma_upstream_ch2(struct cx25821_dev *dev,
dev->pci->irq);
goto fail_irq;
}
- // Start the DMA engine
+ /* Start the DMA engine */
tmp = cx_read(sram_ch->dma_ctl);
cx_set(sram_ch->dma_ctl, tmp | FLD_VID_RISC_EN);
@@ -740,7 +758,7 @@ int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select,
}
dev->_channel2_upstream_select = channel_select;
- sram_ch = &dev->sram_channels[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 =
@@ -751,7 +769,10 @@ int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select,
("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
+ /*
+ 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);
@@ -787,7 +808,7 @@ int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select,
str_length + 1);
}
- //Default if filename is empty string
+ /* Default if filename is empty string */
if (strcmp(dev->input_filename_ch2, "") == 0) {
if (dev->_isNTSC_ch2) {
dev->_filename_ch2 =
@@ -812,7 +833,7 @@ int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select,
dev->upstream_riscbuf_size_ch2 = risc_buffer_size * 2;
dev->upstream_databuf_size_ch2 = data_frame_size * 2;
- //Allocating buffers and prepare RISC program
+ /* Allocating buffers and prepare RISC program */
retval =
cx25821_upstream_buffer_prepare_ch2(dev, sram_ch,
dev->_line_size_ch2);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.