2912289a51
The v4l2_dv_timings_cap struct is used to do sanity checks when setting and enumerating DV timings, ensuring that only valid timings as per the HW capabilities are allowed. However, many drivers just filled in 0 for the minimum width, height or pixelclock frequency. This can cause timings with e.g. 0 as width and height to be accepted, which will in turn lead to a potential division by zero. Fill in proper values are minimum boundaries. 640x350 was chosen since it is the smallest resolution in v4l2-dv-timings.h. Same for 13 MHz as the lowest pixelclock frequency (it's slightly below the minimum of 13.5 MHz in the v4l2-dv-timings.h header). Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
511 lines
15 KiB
C
511 lines
15 KiB
C
/*
|
|
* ths8200 - Texas Instruments THS8200 video encoder driver
|
|
*
|
|
* Copyright 2013 Cisco Systems, Inc. and/or its affiliates.
|
|
*
|
|
* This program is free software; you may redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* 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 version 2.
|
|
*
|
|
* This program is distributed .as is. WITHOUT ANY WARRANTY of any
|
|
* kind, whether express or implied; without even the implied warranty
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/v4l2-dv-timings.h>
|
|
|
|
#include <media/v4l2-dv-timings.h>
|
|
#include <media/v4l2-async.h>
|
|
#include <media/v4l2-device.h>
|
|
|
|
#include "ths8200_regs.h"
|
|
|
|
static int debug;
|
|
module_param(debug, int, 0644);
|
|
MODULE_PARM_DESC(debug, "debug level (0-2)");
|
|
|
|
MODULE_DESCRIPTION("Texas Instruments THS8200 video encoder driver");
|
|
MODULE_AUTHOR("Mats Randgaard <mats.randgaard@cisco.com>");
|
|
MODULE_AUTHOR("Martin Bugge <martin.bugge@cisco.com>");
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
struct ths8200_state {
|
|
struct v4l2_subdev sd;
|
|
uint8_t chip_version;
|
|
/* Is the ths8200 powered on? */
|
|
bool power_on;
|
|
struct v4l2_dv_timings dv_timings;
|
|
};
|
|
|
|
static const struct v4l2_dv_timings_cap ths8200_timings_cap = {
|
|
.type = V4L2_DV_BT_656_1120,
|
|
/* keep this initialization for compatibility with GCC < 4.4.6 */
|
|
.reserved = { 0 },
|
|
V4L2_INIT_BT_TIMINGS(640, 1920, 350, 1080, 25000000, 148500000,
|
|
V4L2_DV_BT_STD_CEA861, V4L2_DV_BT_CAP_PROGRESSIVE)
|
|
};
|
|
|
|
static inline struct ths8200_state *to_state(struct v4l2_subdev *sd)
|
|
{
|
|
return container_of(sd, struct ths8200_state, sd);
|
|
}
|
|
|
|
static inline unsigned htotal(const struct v4l2_bt_timings *t)
|
|
{
|
|
return V4L2_DV_BT_FRAME_WIDTH(t);
|
|
}
|
|
|
|
static inline unsigned vtotal(const struct v4l2_bt_timings *t)
|
|
{
|
|
return V4L2_DV_BT_FRAME_HEIGHT(t);
|
|
}
|
|
|
|
static int ths8200_read(struct v4l2_subdev *sd, u8 reg)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
return i2c_smbus_read_byte_data(client, reg);
|
|
}
|
|
|
|
static int ths8200_write(struct v4l2_subdev *sd, u8 reg, u8 val)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
int ret;
|
|
int i;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
ret = i2c_smbus_write_byte_data(client, reg, val);
|
|
if (ret == 0)
|
|
return 0;
|
|
}
|
|
v4l2_err(sd, "I2C Write Problem\n");
|
|
return ret;
|
|
}
|
|
|
|
/* To set specific bits in the register, a clear-mask is given (to be AND-ed),
|
|
* and then the value-mask (to be OR-ed).
|
|
*/
|
|
static inline void
|
|
ths8200_write_and_or(struct v4l2_subdev *sd, u8 reg,
|
|
uint8_t clr_mask, uint8_t val_mask)
|
|
{
|
|
ths8200_write(sd, reg, (ths8200_read(sd, reg) & clr_mask) | val_mask);
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
|
|
static int ths8200_g_register(struct v4l2_subdev *sd,
|
|
struct v4l2_dbg_register *reg)
|
|
{
|
|
reg->val = ths8200_read(sd, reg->reg & 0xff);
|
|
reg->size = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ths8200_s_register(struct v4l2_subdev *sd,
|
|
const struct v4l2_dbg_register *reg)
|
|
{
|
|
ths8200_write(sd, reg->reg & 0xff, reg->val & 0xff);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int ths8200_log_status(struct v4l2_subdev *sd)
|
|
{
|
|
struct ths8200_state *state = to_state(sd);
|
|
uint8_t reg_03 = ths8200_read(sd, THS8200_CHIP_CTL);
|
|
|
|
v4l2_info(sd, "----- Chip status -----\n");
|
|
v4l2_info(sd, "version: %u\n", state->chip_version);
|
|
v4l2_info(sd, "power: %s\n", (reg_03 & 0x0c) ? "off" : "on");
|
|
v4l2_info(sd, "reset: %s\n", (reg_03 & 0x01) ? "off" : "on");
|
|
v4l2_info(sd, "test pattern: %s\n",
|
|
(reg_03 & 0x20) ? "enabled" : "disabled");
|
|
v4l2_info(sd, "format: %ux%u\n",
|
|
ths8200_read(sd, THS8200_DTG2_PIXEL_CNT_MSB) * 256 +
|
|
ths8200_read(sd, THS8200_DTG2_PIXEL_CNT_LSB),
|
|
(ths8200_read(sd, THS8200_DTG2_LINE_CNT_MSB) & 0x07) * 256 +
|
|
ths8200_read(sd, THS8200_DTG2_LINE_CNT_LSB));
|
|
v4l2_print_dv_timings(sd->name, "Configured format:",
|
|
&state->dv_timings, true);
|
|
return 0;
|
|
}
|
|
|
|
/* Power up/down ths8200 */
|
|
static int ths8200_s_power(struct v4l2_subdev *sd, int on)
|
|
{
|
|
struct ths8200_state *state = to_state(sd);
|
|
|
|
v4l2_dbg(1, debug, sd, "%s: power %s\n", __func__, on ? "on" : "off");
|
|
|
|
state->power_on = on;
|
|
|
|
/* Power up/down - leave in reset state until input video is present */
|
|
ths8200_write_and_or(sd, THS8200_CHIP_CTL, 0xf2, (on ? 0x00 : 0x0c));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_subdev_core_ops ths8200_core_ops = {
|
|
.log_status = ths8200_log_status,
|
|
.s_power = ths8200_s_power,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.g_register = ths8200_g_register,
|
|
.s_register = ths8200_s_register,
|
|
#endif
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* V4L2 subdev video operations
|
|
*/
|
|
|
|
static int ths8200_s_stream(struct v4l2_subdev *sd, int enable)
|
|
{
|
|
struct ths8200_state *state = to_state(sd);
|
|
|
|
if (enable && !state->power_on)
|
|
ths8200_s_power(sd, true);
|
|
|
|
ths8200_write_and_or(sd, THS8200_CHIP_CTL, 0xfe,
|
|
(enable ? 0x01 : 0x00));
|
|
|
|
v4l2_dbg(1, debug, sd, "%s: %sable\n",
|
|
__func__, (enable ? "en" : "dis"));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ths8200_core_init(struct v4l2_subdev *sd)
|
|
{
|
|
/* setup clocks */
|
|
ths8200_write_and_or(sd, THS8200_CHIP_CTL, 0x3f, 0xc0);
|
|
|
|
/**** Data path control (DATA) ****/
|
|
/* Set FSADJ 700 mV,
|
|
* bypass 422-444 interpolation,
|
|
* input format 30 bit RGB444
|
|
*/
|
|
ths8200_write(sd, THS8200_DATA_CNTL, 0x70);
|
|
|
|
/* DTG Mode (Video blocked during blanking
|
|
* VESA slave
|
|
*/
|
|
ths8200_write(sd, THS8200_DTG1_MODE, 0x87);
|
|
|
|
/**** Display Timing Generator Control, Part 1 (DTG1). ****/
|
|
|
|
/* Disable embedded syncs on the output by setting
|
|
* the amplitude to zero for all channels.
|
|
*/
|
|
ths8200_write(sd, THS8200_DTG1_Y_SYNC_MSB, 0x00);
|
|
ths8200_write(sd, THS8200_DTG1_CBCR_SYNC_MSB, 0x00);
|
|
}
|
|
|
|
static void ths8200_setup(struct v4l2_subdev *sd, struct v4l2_bt_timings *bt)
|
|
{
|
|
uint8_t polarity = 0;
|
|
uint16_t line_start_active_video = (bt->vsync + bt->vbackporch);
|
|
uint16_t line_start_front_porch = (vtotal(bt) - bt->vfrontporch);
|
|
|
|
/*** System ****/
|
|
/* Set chip in reset while it is configured */
|
|
ths8200_s_stream(sd, false);
|
|
|
|
/* configure video output timings */
|
|
ths8200_write(sd, THS8200_DTG1_SPEC_A, bt->hsync);
|
|
ths8200_write(sd, THS8200_DTG1_SPEC_B, bt->hfrontporch);
|
|
|
|
/* Zero for progressive scan formats.*/
|
|
if (!bt->interlaced)
|
|
ths8200_write(sd, THS8200_DTG1_SPEC_C, 0x00);
|
|
|
|
/* Distance from leading edge of h sync to start of active video.
|
|
* MSB in 0x2b
|
|
*/
|
|
ths8200_write(sd, THS8200_DTG1_SPEC_D_LSB,
|
|
(bt->hbackporch + bt->hsync) & 0xff);
|
|
/* Zero for SDTV-mode. MSB in 0x2b */
|
|
ths8200_write(sd, THS8200_DTG1_SPEC_E_LSB, 0x00);
|
|
/*
|
|
* MSB for dtg1_spec(d/e/h). See comment for
|
|
* corresponding LSB registers.
|
|
*/
|
|
ths8200_write(sd, THS8200_DTG1_SPEC_DEH_MSB,
|
|
((bt->hbackporch + bt->hsync) & 0x100) >> 1);
|
|
|
|
/* h front porch */
|
|
ths8200_write(sd, THS8200_DTG1_SPEC_K_LSB, (bt->hfrontporch) & 0xff);
|
|
ths8200_write(sd, THS8200_DTG1_SPEC_K_MSB,
|
|
((bt->hfrontporch) & 0x700) >> 8);
|
|
|
|
/* Half the line length. Used to calculate SDTV line types. */
|
|
ths8200_write(sd, THS8200_DTG1_SPEC_G_LSB, (htotal(bt)/2) & 0xff);
|
|
ths8200_write(sd, THS8200_DTG1_SPEC_G_MSB,
|
|
((htotal(bt)/2) >> 8) & 0x0f);
|
|
|
|
/* Total pixels per line (ex. 720p: 1650) */
|
|
ths8200_write(sd, THS8200_DTG1_TOT_PIXELS_MSB, htotal(bt) >> 8);
|
|
ths8200_write(sd, THS8200_DTG1_TOT_PIXELS_LSB, htotal(bt) & 0xff);
|
|
|
|
/* Frame height and field height */
|
|
/* Field height should be programmed higher than frame_size for
|
|
* progressive scan formats
|
|
*/
|
|
ths8200_write(sd, THS8200_DTG1_FRAME_FIELD_SZ_MSB,
|
|
((vtotal(bt) >> 4) & 0xf0) + 0x7);
|
|
ths8200_write(sd, THS8200_DTG1_FRAME_SZ_LSB, vtotal(bt) & 0xff);
|
|
|
|
/* Should be programmed higher than frame_size
|
|
* for progressive formats
|
|
*/
|
|
if (!bt->interlaced)
|
|
ths8200_write(sd, THS8200_DTG1_FIELD_SZ_LSB, 0xff);
|
|
|
|
/**** Display Timing Generator Control, Part 2 (DTG2). ****/
|
|
/* Set breakpoint line numbers and types
|
|
* THS8200 generates line types with different properties. A line type
|
|
* that sets all the RGB-outputs to zero is used in the blanking areas,
|
|
* while a line type that enable the RGB-outputs is used in active video
|
|
* area. The line numbers for start of active video, start of front
|
|
* porch and after the last line in the frame must be set with the
|
|
* corresponding line types.
|
|
*
|
|
* Line types:
|
|
* 0x9 - Full normal sync pulse: Blocks data when dtg1_pass is off.
|
|
* Used in blanking area.
|
|
* 0x0 - Active video: Video data is always passed. Used in active
|
|
* video area.
|
|
*/
|
|
ths8200_write_and_or(sd, THS8200_DTG2_BP1_2_MSB, 0x88,
|
|
((line_start_active_video >> 4) & 0x70) +
|
|
((line_start_front_porch >> 8) & 0x07));
|
|
ths8200_write(sd, THS8200_DTG2_BP3_4_MSB, ((vtotal(bt)) >> 4) & 0x70);
|
|
ths8200_write(sd, THS8200_DTG2_BP1_LSB, line_start_active_video & 0xff);
|
|
ths8200_write(sd, THS8200_DTG2_BP2_LSB, line_start_front_porch & 0xff);
|
|
ths8200_write(sd, THS8200_DTG2_BP3_LSB, (vtotal(bt)) & 0xff);
|
|
|
|
/* line types */
|
|
ths8200_write(sd, THS8200_DTG2_LINETYPE1, 0x90);
|
|
ths8200_write(sd, THS8200_DTG2_LINETYPE2, 0x90);
|
|
|
|
/* h sync width transmitted */
|
|
ths8200_write(sd, THS8200_DTG2_HLENGTH_LSB, bt->hsync & 0xff);
|
|
ths8200_write_and_or(sd, THS8200_DTG2_HLENGTH_LSB_HDLY_MSB, 0x3f,
|
|
(bt->hsync >> 2) & 0xc0);
|
|
|
|
/* The pixel value h sync is asserted on */
|
|
ths8200_write_and_or(sd, THS8200_DTG2_HLENGTH_LSB_HDLY_MSB, 0xe0,
|
|
(htotal(bt) >> 8) & 0x1f);
|
|
ths8200_write(sd, THS8200_DTG2_HLENGTH_HDLY_LSB, htotal(bt));
|
|
|
|
/* v sync width transmitted (must add 1 to get correct output) */
|
|
ths8200_write(sd, THS8200_DTG2_VLENGTH1_LSB, (bt->vsync + 1) & 0xff);
|
|
ths8200_write_and_or(sd, THS8200_DTG2_VLENGTH1_MSB_VDLY1_MSB, 0x3f,
|
|
((bt->vsync + 1) >> 2) & 0xc0);
|
|
|
|
/* The pixel value v sync is asserted on (must add 1 to get correct output) */
|
|
ths8200_write_and_or(sd, THS8200_DTG2_VLENGTH1_MSB_VDLY1_MSB, 0xf8,
|
|
((vtotal(bt) + 1) >> 8) & 0x7);
|
|
ths8200_write(sd, THS8200_DTG2_VDLY1_LSB, vtotal(bt) + 1);
|
|
|
|
/* For progressive video vlength2 must be set to all 0 and vdly2 must
|
|
* be set to all 1.
|
|
*/
|
|
ths8200_write(sd, THS8200_DTG2_VLENGTH2_LSB, 0x00);
|
|
ths8200_write(sd, THS8200_DTG2_VLENGTH2_MSB_VDLY2_MSB, 0x07);
|
|
ths8200_write(sd, THS8200_DTG2_VDLY2_LSB, 0xff);
|
|
|
|
/* Internal delay factors to synchronize the sync pulses and the data */
|
|
/* Experimental values delays (hor 0, ver 0) */
|
|
ths8200_write(sd, THS8200_DTG2_HS_IN_DLY_MSB, 0);
|
|
ths8200_write(sd, THS8200_DTG2_HS_IN_DLY_LSB, 0);
|
|
ths8200_write(sd, THS8200_DTG2_VS_IN_DLY_MSB, 0);
|
|
ths8200_write(sd, THS8200_DTG2_VS_IN_DLY_LSB, 0);
|
|
|
|
/* Polarity of received and transmitted sync signals */
|
|
if (bt->polarities & V4L2_DV_HSYNC_POS_POL) {
|
|
polarity |= 0x01; /* HS_IN */
|
|
polarity |= 0x08; /* HS_OUT */
|
|
}
|
|
if (bt->polarities & V4L2_DV_VSYNC_POS_POL) {
|
|
polarity |= 0x02; /* VS_IN */
|
|
polarity |= 0x10; /* VS_OUT */
|
|
}
|
|
|
|
/* RGB mode, no embedded timings */
|
|
/* Timing of video input bus is derived from HS, VS, and FID dedicated
|
|
* inputs
|
|
*/
|
|
ths8200_write(sd, THS8200_DTG2_CNTL, 0x44 | polarity);
|
|
|
|
/* leave reset */
|
|
ths8200_s_stream(sd, true);
|
|
|
|
v4l2_dbg(1, debug, sd, "%s: frame %dx%d, polarity %d\n"
|
|
"horizontal: front porch %d, back porch %d, sync %d\n"
|
|
"vertical: sync %d\n", __func__, htotal(bt), vtotal(bt),
|
|
polarity, bt->hfrontporch, bt->hbackporch,
|
|
bt->hsync, bt->vsync);
|
|
}
|
|
|
|
static int ths8200_s_dv_timings(struct v4l2_subdev *sd,
|
|
struct v4l2_dv_timings *timings)
|
|
{
|
|
struct ths8200_state *state = to_state(sd);
|
|
|
|
v4l2_dbg(1, debug, sd, "%s:\n", __func__);
|
|
|
|
if (!v4l2_valid_dv_timings(timings, &ths8200_timings_cap,
|
|
NULL, NULL))
|
|
return -EINVAL;
|
|
|
|
if (!v4l2_find_dv_timings_cap(timings, &ths8200_timings_cap, 10,
|
|
NULL, NULL)) {
|
|
v4l2_dbg(1, debug, sd, "Unsupported format\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
timings->bt.flags &= ~V4L2_DV_FL_REDUCED_FPS;
|
|
|
|
/* save timings */
|
|
state->dv_timings = *timings;
|
|
|
|
ths8200_setup(sd, &timings->bt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ths8200_g_dv_timings(struct v4l2_subdev *sd,
|
|
struct v4l2_dv_timings *timings)
|
|
{
|
|
struct ths8200_state *state = to_state(sd);
|
|
|
|
v4l2_dbg(1, debug, sd, "%s:\n", __func__);
|
|
|
|
*timings = state->dv_timings;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ths8200_enum_dv_timings(struct v4l2_subdev *sd,
|
|
struct v4l2_enum_dv_timings *timings)
|
|
{
|
|
if (timings->pad != 0)
|
|
return -EINVAL;
|
|
|
|
return v4l2_enum_dv_timings_cap(timings, &ths8200_timings_cap,
|
|
NULL, NULL);
|
|
}
|
|
|
|
static int ths8200_dv_timings_cap(struct v4l2_subdev *sd,
|
|
struct v4l2_dv_timings_cap *cap)
|
|
{
|
|
if (cap->pad != 0)
|
|
return -EINVAL;
|
|
|
|
*cap = ths8200_timings_cap;
|
|
return 0;
|
|
}
|
|
|
|
/* Specific video subsystem operation handlers */
|
|
static const struct v4l2_subdev_video_ops ths8200_video_ops = {
|
|
.s_stream = ths8200_s_stream,
|
|
.s_dv_timings = ths8200_s_dv_timings,
|
|
.g_dv_timings = ths8200_g_dv_timings,
|
|
};
|
|
|
|
static const struct v4l2_subdev_pad_ops ths8200_pad_ops = {
|
|
.enum_dv_timings = ths8200_enum_dv_timings,
|
|
.dv_timings_cap = ths8200_dv_timings_cap,
|
|
};
|
|
|
|
/* V4L2 top level operation handlers */
|
|
static const struct v4l2_subdev_ops ths8200_ops = {
|
|
.core = &ths8200_core_ops,
|
|
.video = &ths8200_video_ops,
|
|
.pad = &ths8200_pad_ops,
|
|
};
|
|
|
|
static int ths8200_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct ths8200_state *state;
|
|
struct v4l2_subdev *sd;
|
|
int error;
|
|
|
|
/* Check if the adapter supports the needed features */
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -EIO;
|
|
|
|
state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
|
|
if (!state)
|
|
return -ENOMEM;
|
|
|
|
sd = &state->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &ths8200_ops);
|
|
|
|
state->chip_version = ths8200_read(sd, THS8200_VERSION);
|
|
v4l2_dbg(1, debug, sd, "chip version 0x%x\n", state->chip_version);
|
|
|
|
ths8200_core_init(sd);
|
|
|
|
error = v4l2_async_register_subdev(&state->sd);
|
|
if (error)
|
|
return error;
|
|
|
|
v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
|
|
client->addr << 1, client->adapter->name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ths8200_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct ths8200_state *decoder = to_state(sd);
|
|
|
|
v4l2_dbg(1, debug, sd, "%s removed @ 0x%x (%s)\n", client->name,
|
|
client->addr << 1, client->adapter->name);
|
|
|
|
ths8200_s_power(sd, false);
|
|
v4l2_async_unregister_subdev(&decoder->sd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id ths8200_id[] = {
|
|
{ "ths8200", 0 },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, ths8200_id);
|
|
|
|
#if IS_ENABLED(CONFIG_OF)
|
|
static const struct of_device_id ths8200_of_match[] = {
|
|
{ .compatible = "ti,ths8200", },
|
|
{ /* sentinel */ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, ths8200_of_match);
|
|
#endif
|
|
|
|
static struct i2c_driver ths8200_driver = {
|
|
.driver = {
|
|
.name = "ths8200",
|
|
.of_match_table = of_match_ptr(ths8200_of_match),
|
|
},
|
|
.probe = ths8200_probe,
|
|
.remove = ths8200_remove,
|
|
.id_table = ths8200_id,
|
|
};
|
|
|
|
module_i2c_driver(ths8200_driver);
|