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Diffstat (limited to 'drivers/staging/cx25821/cx25821-video-upstream.c')
-rw-r--r--drivers/staging/cx25821/cx25821-video-upstream.c145
1 files changed, 75 insertions, 70 deletions
diff --git a/drivers/staging/cx25821/cx25821-video-upstream.c b/drivers/staging/cx25821/cx25821-video-upstream.c
index 6d48a1e26d1b..c842d8f3d692 100644
--- a/drivers/staging/cx25821/cx25821-video-upstream.c
+++ b/drivers/staging/cx25821/cx25821-video-upstream.c
@@ -32,7 +32,7 @@
#include <linux/file.h>
#include <linux/fcntl.h>
#include <linux/slab.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
@@ -60,9 +60,8 @@ int cx25821_sram_channel_setup_upstream(struct cx25821_dev *dev,
cdt = ch->cdt;
lines = ch->fifo_size / bpl;
- if (lines > 4) {
+ if (lines > 4)
lines = 4;
- }
BUG_ON(lines < 2);
@@ -97,7 +96,7 @@ int cx25821_sram_channel_setup_upstream(struct cx25821_dev *dev,
}
static __le32 *cx25821_update_riscprogram(struct cx25821_dev *dev,
- __le32 * rp, unsigned int offset,
+ __le32 *rp, unsigned int offset,
unsigned int bpl, u32 sync_line,
unsigned int lines, int fifo_enable,
int field_type)
@@ -108,9 +107,8 @@ static __le32 *cx25821_update_riscprogram(struct cx25821_dev *dev,
*(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
if (USE_RISC_NOOP_VIDEO) {
- for (i = 0; i < NUM_NO_OPS; i++) {
+ for (i = 0; i < NUM_NO_OPS; i++)
*(rp++) = cpu_to_le32(RISC_NOOP);
- }
}
/* scan lines */
@@ -140,14 +138,12 @@ static __le32 *cx25821_risc_field_upstream(struct cx25821_dev *dev, __le32 * rp,
int dist_betwn_starts = bpl * 2;
/* sync instruction */
- if (sync_line != NO_SYNC_LINE) {
+ 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++) {
+ for (i = 0; i < NUM_NO_OPS; i++)
*(rp++) = cpu_to_le32(RISC_NOOP);
- }
}
/* scan lines */
@@ -157,12 +153,13 @@ static __le32 *cx25821_risc_field_upstream(struct cx25821_dev *dev, __le32 * rp,
*(rp++) = cpu_to_le32(0); /* bits 63-32 */
if ((lines <= NTSC_FIELD_HEIGHT)
- || (line < (NTSC_FIELD_HEIGHT - 1)) || !(dev->_isNTSC)) {
- offset += dist_betwn_starts; //to skip the other field line
- }
+ || (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.
+ /* 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;
@@ -181,7 +178,8 @@ int cx25821_risc_buffer_upstream(struct cx25821_dev *dev,
{
__le32 *rp;
int fifo_enable = 0;
- int singlefield_lines = lines >> 1; //get line count for single field
+ /* get line count for single field */
+ int singlefield_lines = lines >> 1;
int odd_num_lines = singlefield_lines;
int frame = 0;
int frame_size = 0;
@@ -225,7 +223,7 @@ int cx25821_risc_buffer_upstream(struct cx25821_dev *dev,
fifo_enable = FIFO_DISABLE;
- //Even Field
+ /* Even Field */
rp = cx25821_risc_field_upstream(dev, rp,
dev->_data_buf_phys_addr +
databuf_offset, bottom_offset,
@@ -241,7 +239,9 @@ int cx25821_risc_buffer_upstream(struct cx25821_dev *dev,
risc_flag = RISC_CNT_INC;
}
- // 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);
@@ -258,18 +258,18 @@ void cx25821_stop_upstream_video_ch1(struct cx25821_dev *dev)
if (!dev->_is_running) {
printk
- ("cx25821: No video file is currently running so return!\n");
+ (KERN_INFO "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 enable
+ /* 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
+ /* Clear data buffer memory */
if (dev->_data_buf_virt_addr)
memset(dev->_data_buf_virt_addr, 0, dev->_data_buf_size);
@@ -292,9 +292,8 @@ void cx25821_stop_upstream_video_ch1(struct cx25821_dev *dev)
void cx25821_free_mem_upstream_ch1(struct cx25821_dev *dev)
{
- if (dev->_is_running) {
+ if (dev->_is_running)
cx25821_stop_upstream_video_ch1(dev);
- }
if (dev->_dma_virt_addr) {
pci_free_consistent(dev->pci, dev->_risc_size,
@@ -347,19 +346,19 @@ int cx25821_get_frame(struct cx25821_dev *dev, struct sram_channel *sram_ch)
if (IS_ERR(myfile)) {
const int open_errno = -PTR_ERR(myfile);
- printk("%s(): ERROR opening file(%s) with errno = %d! \n",
+ 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("%s: File has no file operations registered!",
+ printk(KERN_ERR "%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!",
+ printk(KERN_ERR "%s: File has no READ operations registered!",
__func__);
filp_close(myfile, NULL);
return -EIO;
@@ -412,7 +411,7 @@ static void cx25821_vidups_handler(struct work_struct *work)
container_of(work, struct cx25821_dev, _irq_work_entry);
if (!dev) {
- printk("ERROR %s(): since container_of(work_struct) FAILED! \n",
+ printk(KERN_ERR "ERROR %s(): since container_of(work_struct) FAILED!\n",
__func__);
return;
}
@@ -438,12 +437,12 @@ int cx25821_openfile(struct cx25821_dev *dev, struct sram_channel *sram_ch)
if (IS_ERR(myfile)) {
const int open_errno = -PTR_ERR(myfile);
- printk("%s(): ERROR opening file(%s) with errno = %d! \n",
+ 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("%s: File has no file operations registered!",
+ printk(KERN_ERR "%s: File has no file operations registered!",
__func__);
filp_close(myfile, NULL);
return -EIO;
@@ -451,7 +450,7 @@ int cx25821_openfile(struct cx25821_dev *dev, struct sram_channel *sram_ch)
if (!myfile->f_op->read) {
printk
- ("%s: File has no READ operations registered! Returning.",
+ (KERN_ERR "%s: File has no READ operations registered! Returning.",
__func__);
filp_close(myfile, NULL);
return -EIO;
@@ -490,9 +489,8 @@ int cx25821_openfile(struct cx25821_dev *dev, struct sram_channel *sram_ch)
if (i > 0)
dev->_frame_count++;
- if (vfs_read_retval < line_size) {
+ if (vfs_read_retval < line_size)
break;
- }
}
dev->_file_status =
@@ -528,11 +526,11 @@ int cx25821_upstream_buffer_prepare(struct cx25821_dev *dev,
if (!dev->_dma_virt_addr) {
printk
- ("cx25821: FAILED to allocate memory for Risc buffer! Returning.\n");
+ (KERN_ERR "cx25821: FAILED to allocate memory for Risc buffer! Returning.\n");
return -ENOMEM;
}
- //Clear memory at address
+ /* Clear memory at address */
memset(dev->_dma_virt_addr, 0, dev->_risc_size);
if (dev->_data_buf_virt_addr != NULL) {
@@ -540,7 +538,7 @@ int cx25821_upstream_buffer_prepare(struct cx25821_dev *dev,
dev->_data_buf_virt_addr,
dev->_data_buf_phys_addr);
}
- //For Video Data buffer allocation
+ /* For Video Data buffer allocation */
dev->_data_buf_virt_addr =
pci_alloc_consistent(dev->pci, dev->upstream_databuf_size,
&data_dma_addr);
@@ -549,30 +547,30 @@ int cx25821_upstream_buffer_prepare(struct cx25821_dev *dev,
if (!dev->_data_buf_virt_addr) {
printk
- ("cx25821: FAILED to allocate memory for data buffer! Returning.\n");
+ (KERN_ERR "cx25821: FAILED to allocate memory for data buffer! Returning.\n");
return -ENOMEM;
}
- //Clear memory at address
+ /* 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
+ /* 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");
+ "cx25821: Failed creating Video Upstream Risc programs!\n");
goto error;
}
return 0;
- error:
+error:
return ret;
}
@@ -588,10 +586,11 @@ int cx25821_video_upstream_irq(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);
@@ -632,7 +631,7 @@ int cx25821_video_upstream_irq(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);
@@ -643,24 +642,24 @@ int cx25821_video_upstream_irq(struct cx25821_dev *dev, int chan_num,
} else {
if (status & FLD_VID_SRC_UF)
printk
- ("%s: Video Received Underflow Error Interrupt!\n",
+ (KERN_ERR "%s: Video Received Underflow Error Interrupt!\n",
__func__);
if (status & FLD_VID_SRC_SYNC)
- printk("%s: Video Received Sync Error Interrupt!\n",
+ printk(KERN_ERR "%s: Video Received Sync Error Interrupt!\n",
__func__);
if (status & FLD_VID_SRC_OPC_ERR)
- printk("%s: Video Received OpCode Error Interrupt!\n",
+ printk(KERN_ERR "%s: Video Received OpCode Error Interrupt!\n",
__func__);
}
if (dev->_file_status == END_OF_FILE) {
- printk("cx25821: EOF Channel 1 Framecount = %d\n",
+ printk(KERN_ERR "cx25821: EOF Channel 1 Framecount = %d\n",
dev->_frame_count);
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);
@@ -685,17 +684,16 @@ static irqreturn_t cx25821_upstream_irq(int irq, void *dev_id)
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(dev, channel_num, vid_status);
}
- if (handled < 0) {
+ if (handled < 0)
cx25821_stop_upstream_video_ch1(dev);
- } else {
+ else
handled += handled;
- }
return IRQ_RETVAL(handled);
}
@@ -714,19 +712,19 @@ void cx25821_set_pixelengine(struct cx25821_dev *dev, struct sram_channel *ch,
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
+ /* 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) {
+ 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)
+ /* 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);
@@ -738,21 +736,26 @@ int cx25821_start_video_dma_upstream(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);
- cx_write(sram_ch->cmds_start + 4, 0); /* Risc IPC High 64 bits 63-32 */
+ /* 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.
+ /* 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);
@@ -766,7 +769,7 @@ int cx25821_start_video_dma_upstream(struct cx25821_dev *dev,
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);
@@ -775,7 +778,7 @@ int cx25821_start_video_dma_upstream(struct cx25821_dev *dev,
return 0;
- fail_irq:
+fail_irq:
cx25821_dev_unregister(dev);
return err;
}
@@ -792,7 +795,7 @@ int cx25821_vidupstream_init_ch1(struct cx25821_dev *dev, int channel_select,
int str_length = 0;
if (dev->_is_running) {
- printk("Video Channel is still running so return!\n");
+ printk(KERN_INFO "Video Channel is still running so return!\n");
return 0;
}
@@ -804,10 +807,12 @@ int cx25821_vidupstream_init_ch1(struct cx25821_dev *dev, int channel_select,
if (!dev->_irq_queues) {
printk
- ("cx25821: create_singlethread_workqueue() for Video FAILED!\n");
+ (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
+ /* 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);
@@ -841,7 +846,7 @@ int cx25821_vidupstream_init_ch1(struct cx25821_dev *dev, int channel_select,
memcpy(dev->_filename, dev->_defaultname, str_length + 1);
}
- //Default if filename is empty string
+ /* Default if filename is empty string */
if (strcmp(dev->input_filename, "") == 0) {
if (dev->_isNTSC) {
dev->_filename =
@@ -875,7 +880,7 @@ int cx25821_vidupstream_init_ch1(struct cx25821_dev *dev, int channel_select,
dev->upstream_riscbuf_size = risc_buffer_size * 2;
dev->upstream_databuf_size = data_frame_size * 2;
- //Allocating buffers and prepare RISC program
+ /* Allocating buffers and prepare RISC program */
retval = cx25821_upstream_buffer_prepare(dev, sram_ch, dev->_line_size);
if (retval < 0) {
printk(KERN_ERR
@@ -888,7 +893,7 @@ int cx25821_vidupstream_init_ch1(struct cx25821_dev *dev, int channel_select,
return 0;
- error:
+error:
cx25821_dev_unregister(dev);
return err;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.