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raspberrypi-kernel
提交 10991235 编写于 作者: O Olimpiu Pascariu 提交者： Mauro Carvalho Chehab
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V4L/DVB: cx25821: fix coding style issues in cx25821-video-upstream.c 

This is a patch to cx25821-video-upstream.c file that fixes up warnings
and errors found by the checkpatch.pl tool
Signed-off-by: NOlimpiu Pascariu <olimpiu.pascariu@gmail.com>
Signed-off-by: NDouglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
上级 92f4fc10
隐藏空白更改
内联 并排
Showing with 63 addition and 58 deletion
drivers/staging/cx25821/cx25821-video-upstream.c
浏览文件 @ 10991235
......@@ -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");
("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,
......@@ -347,7 +346,7 @@ 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("%s(): ERROR opening file(%s) with errno = %d!\n",
__func__, dev->_filename, open_errno);
return PTR_ERR(myfile);
} else {
......@@ -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("ERROR %s(): since container_of(work_struct) FAILED!\n",
__func__);
return;
}
......@@ -438,7 +437,7 @@ 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("%s(): ERROR opening file(%s) with errno = %d!\n",
__func__, dev->_filename, open_errno);
return PTR_ERR(myfile);
} else {
......@@ -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 =
......@@ -532,7 +530,7 @@ int cx25821_upstream_buffer_prepare(struct cx25821_dev *dev,
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);
......@@ -553,26 +551,26 @@ int cx25821_upstream_buffer_prepare(struct cx25821_dev *dev,
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);
......@@ -660,7 +659,7 @@ int cx25821_video_upstream_irq(struct cx25821_dev *dev, int chan_num,
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;
}
......@@ -807,7 +810,9 @@ int cx25821_vidupstream_init_ch1(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);
......@@ -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;
......
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