MODULE_DESCRIPTION("TVP514X linux decoder driver");
MODULE_LICENSE("GPL");
-/*
- * enum tvp514x_std - enum for supported standards
- */
+/* enum tvp514x_std - enum for supported standards */
enum tvp514x_std {
STD_NTSC_MJ = 0,
STD_PAL_BDGHIN,
STD_INVALID
};
-/*
+/**
* struct tvp514x_std_info - Structure to store standard informations
* @width: Line width in pixels
* @height:Number of active lines
};
static struct tvp514x_reg tvp514x_reg_list_default[0x40];
-/*
+/**
* struct tvp514x_decoder - TVP5146/47 decoder object
* @sd: Subdevice Slave handle
* @tvp514x_regs: copy of hw's regs with preset values.
enum tvp514x_std current_std;
int num_stds;
struct tvp514x_std_info *std_list;
- /*
- * Input and Output Routing parameters
- */
+ /* Input and Output Routing parameters */
u32 input;
u32 output;
};
/* TVP514x default register values */
static struct tvp514x_reg tvp514x_reg_list_default[] = {
- {TOK_WRITE, REG_INPUT_SEL, 0x05}, /* Composite selected */
+ /* Composite selected */
+ {TOK_WRITE, REG_INPUT_SEL, 0x05},
{TOK_WRITE, REG_AFE_GAIN_CTRL, 0x0F},
- {TOK_WRITE, REG_VIDEO_STD, 0x00}, /* Auto mode */
+ /* Auto mode */
+ {TOK_WRITE, REG_VIDEO_STD, 0x00},
{TOK_WRITE, REG_OPERATION_MODE, 0x00},
{TOK_SKIP, REG_AUTOSWITCH_MASK, 0x3F},
{TOK_WRITE, REG_COLOR_KILLER, 0x10},
{TOK_WRITE, REG_HUE, 0x00},
{TOK_WRITE, REG_CHROMA_CONTROL1, 0x00},
{TOK_WRITE, REG_CHROMA_CONTROL2, 0x0E},
- {TOK_SKIP, 0x0F, 0x00}, /* Reserved */
+ /* Reserved */
+ {TOK_SKIP, 0x0F, 0x00},
{TOK_WRITE, REG_COMP_PR_SATURATION, 0x80},
{TOK_WRITE, REG_COMP_Y_CONTRAST, 0x80},
{TOK_WRITE, REG_COMP_PB_SATURATION, 0x80},
- {TOK_SKIP, 0x13, 0x00}, /* Reserved */
+ /* Reserved */
+ {TOK_SKIP, 0x13, 0x00},
{TOK_WRITE, REG_COMP_Y_BRIGHTNESS, 0x80},
- {TOK_SKIP, 0x15, 0x00}, /* Reserved */
- {TOK_SKIP, REG_AVID_START_PIXEL_LSB, 0x55}, /* NTSC timing */
+ /* Reserved */
+ {TOK_SKIP, 0x15, 0x00},
+ /* NTSC timing */
+ {TOK_SKIP, REG_AVID_START_PIXEL_LSB, 0x55},
{TOK_SKIP, REG_AVID_START_PIXEL_MSB, 0x00},
{TOK_SKIP, REG_AVID_STOP_PIXEL_LSB, 0x25},
{TOK_SKIP, REG_AVID_STOP_PIXEL_MSB, 0x03},
- {TOK_SKIP, REG_HSYNC_START_PIXEL_LSB, 0x00}, /* NTSC timing */
+ /* NTSC timing */
+ {TOK_SKIP, REG_HSYNC_START_PIXEL_LSB, 0x00},
{TOK_SKIP, REG_HSYNC_START_PIXEL_MSB, 0x00},
{TOK_SKIP, REG_HSYNC_STOP_PIXEL_LSB, 0x40},
{TOK_SKIP, REG_HSYNC_STOP_PIXEL_MSB, 0x00},
- {TOK_SKIP, REG_VSYNC_START_LINE_LSB, 0x04}, /* NTSC timing */
+ /* NTSC timing */
+ {TOK_SKIP, REG_VSYNC_START_LINE_LSB, 0x04},
{TOK_SKIP, REG_VSYNC_START_LINE_MSB, 0x00},
{TOK_SKIP, REG_VSYNC_STOP_LINE_LSB, 0x07},
{TOK_SKIP, REG_VSYNC_STOP_LINE_MSB, 0x00},
- {TOK_SKIP, REG_VBLK_START_LINE_LSB, 0x01}, /* NTSC timing */
+ /* NTSC timing */
+ {TOK_SKIP, REG_VBLK_START_LINE_LSB, 0x01},
{TOK_SKIP, REG_VBLK_START_LINE_MSB, 0x00},
{TOK_SKIP, REG_VBLK_STOP_LINE_LSB, 0x15},
{TOK_SKIP, REG_VBLK_STOP_LINE_MSB, 0x00},
- {TOK_SKIP, 0x26, 0x00}, /* Reserved */
- {TOK_SKIP, 0x27, 0x00}, /* Reserved */
+ /* Reserved */
+ {TOK_SKIP, 0x26, 0x00},
+ /* Reserved */
+ {TOK_SKIP, 0x27, 0x00},
{TOK_SKIP, REG_FAST_SWTICH_CONTROL, 0xCC},
- {TOK_SKIP, 0x29, 0x00}, /* Reserved */
+ /* Reserved */
+ {TOK_SKIP, 0x29, 0x00},
{TOK_SKIP, REG_FAST_SWTICH_SCART_DELAY, 0x00},
- {TOK_SKIP, 0x2B, 0x00}, /* Reserved */
+ /* Reserved */
+ {TOK_SKIP, 0x2B, 0x00},
{TOK_SKIP, REG_SCART_DELAY, 0x00},
{TOK_SKIP, REG_CTI_DELAY, 0x00},
{TOK_SKIP, REG_CTI_CONTROL, 0x00},
- {TOK_SKIP, 0x2F, 0x00}, /* Reserved */
- {TOK_SKIP, 0x30, 0x00}, /* Reserved */
- {TOK_SKIP, 0x31, 0x00}, /* Reserved */
- {TOK_WRITE, REG_SYNC_CONTROL, 0x00}, /* HS, VS active high */
- {TOK_WRITE, REG_OUTPUT_FORMATTER1, 0x00}, /* 10-bit BT.656 */
- {TOK_WRITE, REG_OUTPUT_FORMATTER2, 0x11}, /* Enable clk & data */
- {TOK_WRITE, REG_OUTPUT_FORMATTER3, 0xEE}, /* Enable AVID & FLD */
- {TOK_WRITE, REG_OUTPUT_FORMATTER4, 0xAF}, /* Enable VS & HS */
+ /* Reserved */
+ {TOK_SKIP, 0x2F, 0x00},
+ /* Reserved */
+ {TOK_SKIP, 0x30, 0x00},
+ /* Reserved */
+ {TOK_SKIP, 0x31, 0x00},
+ /* HS, VS active high */
+ {TOK_WRITE, REG_SYNC_CONTROL, 0x00},
+ /* 10-bit BT.656 */
+ {TOK_WRITE, REG_OUTPUT_FORMATTER1, 0x00},
+ /* Enable clk & data */
+ {TOK_WRITE, REG_OUTPUT_FORMATTER2, 0x11},
+ /* Enable AVID & FLD */
+ {TOK_WRITE, REG_OUTPUT_FORMATTER3, 0xEE},
+ /* Enable VS & HS */
+ {TOK_WRITE, REG_OUTPUT_FORMATTER4, 0xAF},
{TOK_WRITE, REG_OUTPUT_FORMATTER5, 0xFF},
{TOK_WRITE, REG_OUTPUT_FORMATTER6, 0xFF},
- {TOK_WRITE, REG_CLEAR_LOST_LOCK, 0x01}, /* Clear status */
+ /* Clear status */
+ {TOK_WRITE, REG_CLEAR_LOST_LOCK, 0x01},
{TOK_TERM, 0, 0},
};
-/*
+/**
* List of image formats supported by TVP5146/47 decoder
* Currently we are using 8 bit mode only, but can be
* extended to 10/20 bit mode.
},
};
-/*
+/**
* Supported standards -
*
* Currently supports two standards only, need to add support for rest of the
}
-/*
- * Read a value from a register in an TVP5146/47 decoder device.
+/**
+ * tvp514x_read_reg() - Read a value from a register in an TVP5146/47.
+ * @sd: ptr to v4l2_subdev struct
+ * @reg: TVP5146/47 register address
+ *
* Returns value read if successful, or non-zero (-1) otherwise.
*/
static int tvp514x_read_reg(struct v4l2_subdev *sd, u8 reg)
return err;
}
+/**
+ * dump_reg() - dump the register content of TVP5146/47.
+ * @sd: ptr to v4l2_subdev struct
+ * @reg: TVP5146/47 register address
+ */
static void dump_reg(struct v4l2_subdev *sd, u8 reg)
{
u32 val;
v4l2_info(sd, "Reg(0x%.2X): 0x%.2X\n", reg, val);
}
-/*
+/**
+ * tvp514x_write_reg() - Write a value to a register in TVP5146/47
+ * @sd: ptr to v4l2_subdev struct
+ * @reg: TVP5146/47 register address
+ * @val: value to be written to the register
+ *
* Write a value to a register in an TVP5146/47 decoder device.
* Returns zero if successful, or non-zero otherwise.
*/
return err;
}
-/*
- * tvp514x_write_regs : Initializes a list of TVP5146/47 registers
+/**
+ * tvp514x_write_regs() : Initializes a list of TVP5146/47 registers
+ * @sd: ptr to v4l2_subdev struct
+ * @reglist: list of TVP5146/47 registers and values
+ *
+ * Initializes a list of TVP5146/47 registers:-
* if token is TOK_TERM, then entire write operation terminates
* if token is TOK_DELAY, then a delay of 'val' msec is introduced
* if token is TOK_SKIP, then the register write is skipped
* if token is TOK_WRITE, then the register write is performed
- *
- * reglist - list of registers to be written
* Returns zero if successful, or non-zero otherwise.
*/
static int tvp514x_write_regs(struct v4l2_subdev *sd,
return 0;
}
-/*
- * tvp514x_get_current_std:
- * Returns the current standard detected by TVP5146/47
+/**
+ * tvp514x_get_current_std() : Get the current standard detected by TVP5146/47
+ * @sd: ptr to v4l2_subdev struct
+ *
+ * Get current standard detected by TVP5146/47, STD_INVALID if there is no
+ * standard detected.
*/
static enum tvp514x_std tvp514x_get_current_std(struct v4l2_subdev *sd)
{
/* use the standard status register */
std_status = tvp514x_read_reg(sd, REG_VIDEO_STD_STATUS);
else
- std_status = std; /* use the standard register itself */
+ /* use the standard register itself */
+ std_status = std;
switch (std_status & VIDEO_STD_MASK) {
case VIDEO_STD_NTSC_MJ_BIT:
return STD_INVALID;
}
-/*
- * TVP5146/47 register dump function
- */
+/* TVP5146/47 register dump function */
static void tvp514x_reg_dump(struct v4l2_subdev *sd)
{
dump_reg(sd, REG_INPUT_SEL);
dump_reg(sd, REG_CLEAR_LOST_LOCK);
}
-/*
- * Configure the TVP5146/47 with the current register settings
+/**
+ * tvp514x_configure() - Configure the TVP5146/47 registers
+ * @sd: ptr to v4l2_subdev struct
+ * @decoder: ptr to tvp514x_decoder structure
+ *
* Returns zero if successful, or non-zero otherwise.
*/
static int tvp514x_configure(struct v4l2_subdev *sd,
return 0;
}
-/*
- * Detect if an tvp514x is present, and if so which revision.
+/**
+ * tvp514x_detect() - Detect if an tvp514x is present, and if so which revision.
+ * @sd: pointer to standard V4L2 sub-device structure
+ * @decoder: pointer to tvp514x_decoder structure
+ *
* A device is considered to be detected if the chip ID (LSB and MSB)
* registers match the expected values.
* Any value of the rom version register is accepted.
return 0;
}
-/*
- * Following are decoder interface functions implemented by
- * TVP5146/47 decoder driver.
- */
-
-/*
- * tvp514x_querystd - V4L2 decoder interface handler for VIDIOC_QUERYSTD ioctl
+/**
+ * tvp514x_querystd() - V4L2 decoder interface handler for querystd
* @sd: pointer to standard V4L2 sub-device structure
* @std_id: standard V4L2 std_id ioctl enum
*
return 0;
}
-/*
- * tvp514x_s_std - V4L2 decoder interface handler for VIDIOC_S_STD ioctl
+/**
+ * tvp514x_s_std() - V4L2 decoder interface handler for s_std
* @sd: pointer to standard V4L2 sub-device structure
* @std_id: standard V4L2 v4l2_std_id ioctl enum
*
return 0;
}
-/*
- * tvp514x_s_routing - V4L2 decoder interface handler for VIDIOC_S_INPUT ioctl
+/**
+ * tvp514x_s_routing() - V4L2 decoder interface handler for s_routing
* @sd: pointer to standard V4L2 sub-device structure
- * @index: number of the input
+ * @input: input selector for routing the signal
+ * @output: output selector for routing the signal
+ * @config: config value. Not used
*
* If index is valid, selects the requested input. Otherwise, returns -EINVAL if
* the input is not supported or there is no active signal present in the
if ((input >= INPUT_INVALID) ||
(output >= OUTPUT_INVALID))
- return -EINVAL; /* Index out of bound */
+ /* Index out of bound */
+ return -EINVAL;
input_sel = input;
output_sel = output;
lock_mask = STATUS_HORZ_SYNC_LOCK_BIT |
STATUS_VIRT_SYNC_LOCK_BIT;
break;
- /*Need to add other interfaces*/
+ /* Need to add other interfaces*/
default:
return -EINVAL;
}
sync_lock_status = tvp514x_read_reg(sd,
REG_STATUS1);
if (lock_mask == (sync_lock_status & lock_mask))
- break; /* Input detected */
+ /* Input detected */
+ break;
}
if ((current_std == STD_INVALID) || (try_count < 0))
return 0;
}
-/*
- * tvp514x_queryctrl - V4L2 decoder interface handler for VIDIOC_QUERYCTRL ioctl
+/**
+ * tvp514x_queryctrl() - V4L2 decoder interface handler for queryctrl
* @sd: pointer to standard V4L2 sub-device structure
* @qctrl: standard V4L2 v4l2_queryctrl structure
*
switch (qctrl->id) {
case V4L2_CID_BRIGHTNESS:
- /* Brightness supported is (0-255),
- */
+ /* Brightness supported is (0-255), */
err = v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 128);
break;
case V4L2_CID_CONTRAST:
case V4L2_CID_SATURATION:
- /* Saturation and Contrast supported is -
+ /**
+ * Saturation and Contrast supported is -
* Contrast: 0 - 255 (Default - 128)
* Saturation: 0 - 255 (Default - 128)
*/
err = v4l2_ctrl_query_fill(qctrl, -180, 180, 180, 0);
break;
case V4L2_CID_AUTOGAIN:
- /*
+ /**
* Auto Gain supported is -
* 0 - 1 (Default - 1)
*/
return err;
}
-/*
- * tvp514x_g_ctrl - V4L2 decoder interface handler for VIDIOC_G_CTRL ioctl
+/**
+ * tvp514x_g_ctrl() - V4L2 decoder interface handler for g_ctrl
* @sd: pointer to standard V4L2 sub-device structure
* @ctrl: pointer to v4l2_control structure
*
return 0;
}
-/*
- * tvp514x_s_ctrl - V4L2 decoder interface handler for VIDIOC_S_CTRL ioctl
+/**
+ * tvp514x_s_ctrl() - V4L2 decoder interface handler for s_ctrl
* @sd: pointer to standard V4L2 sub-device structure
* @ctrl: pointer to v4l2_control structure
*
return err;
}
-/*
- * tvp514x_enum_fmt_cap - Implement the CAPTURE buffer VIDIOC_ENUM_FMT ioctl
+/**
+ * tvp514x_enum_fmt_cap() - V4L2 decoder interface handler for enum_fmt
* @sd: pointer to standard V4L2 sub-device structure
* @fmt: standard V4L2 VIDIOC_ENUM_FMT ioctl structure
*
index = fmt->index;
if ((index >= decoder->num_fmts) || (index < 0))
- return -EINVAL; /* Index out of bound */
+ /* Index out of bound */
+ return -EINVAL;
if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL; /* only capture is supported */
+ /* only capture is supported */
+ return -EINVAL;
memcpy(fmt, &decoder->fmt_list[index],
sizeof(struct v4l2_fmtdesc));
return 0;
}
-/*
- * tvp514x_try_fmt_cap - Implement the CAPTURE buffer VIDIOC_TRY_FMT ioctl
+/**
+ * tvp514x_try_fmt_cap() - V4L2 decoder interface handler for try_fmt
* @sd: pointer to standard V4L2 sub-device structure
* @f: pointer to standard V4L2 VIDIOC_TRY_FMT ioctl structure
*
return -EINVAL;
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ /* only capture is supported */
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
pix = &f->fmt.pix;
break;
}
if (ifmt == decoder->num_fmts)
- ifmt = 0; /* None of the format matched, select default */
+ /* None of the format matched, select default */
+ ifmt = 0;
pix->pixelformat = decoder->fmt_list[ifmt].pixelformat;
pix->field = V4L2_FIELD_INTERLACED;
return 0;
}
-/*
- * tvp514x_s_fmt_cap - V4L2 decoder interface handler for VIDIOC_S_FMT ioctl
+/**
+ * tvp514x_s_fmt_cap() - V4L2 decoder interface handler for s_fmt
* @sd: pointer to standard V4L2 sub-device structure
* @f: pointer to standard V4L2 VIDIOC_S_FMT ioctl structure
*
return -EINVAL;
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL; /* only capture is supported */
+ /* only capture is supported */
+ return -EINVAL;
pix = &f->fmt.pix;
rval = tvp514x_try_fmt_cap(sd, f);
return rval;
}
-/*
- * tvp514x_g_fmt_cap - V4L2 decoder interface handler for tvp514x_g_fmt_cap
+/**
+ * tvp514x_g_fmt_cap() - V4L2 decoder interface handler for tvp514x_g_fmt_cap
* @sd: pointer to standard V4L2 sub-device structure
* @f: pointer to standard V4L2 v4l2_format structure
*
return -EINVAL;
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL; /* only capture is supported */
+ /* only capture is supported */
+ return -EINVAL;
f->fmt.pix = decoder->pix;
return 0;
}
-/*
- * tvp514x_g_parm - V4L2 decoder interface handler for VIDIOC_G_PARM ioctl
+/**
+ * tvp514x_g_parm() - V4L2 decoder interface handler for g_parm
* @sd: pointer to standard V4L2 sub-device structure
* @a: pointer to standard V4L2 VIDIOC_G_PARM ioctl structure
*
return -EINVAL;
if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL; /* only capture is supported */
+ /* only capture is supported */
+ return -EINVAL;
memset(a, 0, sizeof(*a));
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
return 0;
}
-/*
- * tvp514x_s_parm - V4L2 decoder interface handler for VIDIOC_S_PARM ioctl
+/**
+ * tvp514x_s_parm() - V4L2 decoder interface handler for s_parm
* @sd: pointer to standard V4L2 sub-device structure
* @a: pointer to standard V4L2 VIDIOC_S_PARM ioctl structure
*
return -EINVAL;
if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL; /* only capture is supported */
+ /* only capture is supported */
+ return -EINVAL;
timeperframe = &a->parm.capture.timeperframe;
return 0;
}
-/*
- * tvp514x_s_stream - V4L2 decoder interface handler for vidioc_int_s_power_num
+/**
+ * tvp514x_s_stream() - V4L2 decoder i/f handler for s_stream
* @sd: pointer to standard V4L2 sub-device structure
* @enable: streaming enable or disable
*
.fmt_list = tvp514x_fmt_list,
.num_fmts = ARRAY_SIZE(tvp514x_fmt_list),
- .pix = {/* Default to NTSC 8-bit YUV 422 */
+ .pix = {
+ /* Default to NTSC 8-bit YUV 422 */
.width = NTSC_NUM_ACTIVE_PIXELS,
.height = NTSC_NUM_ACTIVE_LINES,
.pixelformat = V4L2_PIX_FMT_UYVY,
};
-/*
- * tvp514x_probe - decoder driver i2c probe handler
+/**
+ * tvp514x_probe() - decoder driver i2c probe handler
* @client: i2c driver client device structure
* @id: i2c driver id table
*
if (!decoder)
return -ENOMEM;
- /*
- * Initialize the tvp514x_decoder with default configuration
- */
+ /* Initialize the tvp514x_decoder with default configuration */
*decoder = tvp514x_dev;
/* Copy default register configuration */
memcpy(decoder->tvp514x_regs, tvp514x_reg_list_default,
sizeof(tvp514x_reg_list_default));
- /*
- * Copy board specific information here
- */
+ /* Copy board specific information here */
decoder->pdata = client->dev.platform_data;
- /*
+ /**
* Fetch platform specific data, and configure the
* tvp514x_reg_list[] accordingly. Since this is one
* time configuration, no need to preserve.
}
-/*
- * tvp514x_remove - decoder driver i2c remove handler
+/**
+ * tvp514x_remove() - decoder driver i2c remove handler
* @client: i2c driver client device structure
*
* Unregister decoder as an i2c client device and V4L2
kfree(decoder);
return 0;
}
-/*
- * TVP5146 Init/Power on Sequence
- */
+/* TVP5146 Init/Power on Sequence */
static const struct tvp514x_reg tvp5146_init_reg_seq[] = {
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x02},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
{TOK_TERM, 0, 0},
};
-/*
- * TVP5147 Init/Power on Sequence
- */
+/* TVP5147 Init/Power on Sequence */
static const struct tvp514x_reg tvp5147_init_reg_seq[] = {
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS1, 0x02},
{TOK_WRITE, REG_VBUS_ADDRESS_ACCESS2, 0x00},
{TOK_TERM, 0, 0},
};
-/*
- * TVP5146M2/TVP5147M1 Init/Power on Sequence
- */
+/* TVP5146M2/TVP5147M1 Init/Power on Sequence */
static const struct tvp514x_reg tvp514xm_init_reg_seq[] = {
{TOK_WRITE, REG_OPERATION_MODE, 0x01},
{TOK_WRITE, REG_OPERATION_MODE, 0x00},
{TOK_TERM, 0, 0},
};
-/*
+/**
* I2C Device Table -
*
* name - Name of the actual device/chip.
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