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OpenCloudOS-Kernel/drivers/media/platform/davinci/vpbe_venc.c

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/*
* Copyright (C) 2010 Texas Instruments Inc
*
* 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 in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/ctype.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/videodev2.h>
#include <linux/slab.h>
#include <mach/hardware.h>
#include <mach/mux.h>
#include <linux/platform_data/i2c-davinci.h>
#include <linux/io.h>
#include <media/davinci/vpbe_types.h>
#include <media/davinci/vpbe_venc.h>
#include <media/davinci/vpss.h>
#include <media/v4l2-device.h>
#include "vpbe_venc_regs.h"
#define MODULE_NAME "davinci-vpbe-venc"
static struct platform_device_id vpbe_venc_devtype[] = {
{
.name = DM644X_VPBE_VENC_SUBDEV_NAME,
.driver_data = VPBE_VERSION_1,
}, {
.name = DM365_VPBE_VENC_SUBDEV_NAME,
.driver_data = VPBE_VERSION_2,
}, {
.name = DM355_VPBE_VENC_SUBDEV_NAME,
.driver_data = VPBE_VERSION_3,
},
{
/* sentinel */
}
};
MODULE_DEVICE_TABLE(platform, vpbe_venc_devtype);
static int debug = 2;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level 0-2");
struct venc_state {
struct v4l2_subdev sd;
struct venc_callback *callback;
struct venc_platform_data *pdata;
struct device *pdev;
u32 output;
v4l2_std_id std;
spinlock_t lock;
void __iomem *venc_base;
void __iomem *vdaccfg_reg;
enum vpbe_version venc_type;
};
static inline struct venc_state *to_state(struct v4l2_subdev *sd)
{
return container_of(sd, struct venc_state, sd);
}
static inline u32 venc_read(struct v4l2_subdev *sd, u32 offset)
{
struct venc_state *venc = to_state(sd);
return readl(venc->venc_base + offset);
}
static inline u32 venc_write(struct v4l2_subdev *sd, u32 offset, u32 val)
{
struct venc_state *venc = to_state(sd);
writel(val, (venc->venc_base + offset));
return val;
}
static inline u32 venc_modify(struct v4l2_subdev *sd, u32 offset,
u32 val, u32 mask)
{
u32 new_val = (venc_read(sd, offset) & ~mask) | (val & mask);
venc_write(sd, offset, new_val);
return new_val;
}
static inline u32 vdaccfg_write(struct v4l2_subdev *sd, u32 val)
{
struct venc_state *venc = to_state(sd);
writel(val, venc->vdaccfg_reg);
val = readl(venc->vdaccfg_reg);
return val;
}
#define VDAC_COMPONENT 0x543
#define VDAC_S_VIDEO 0x210
/* This function sets the dac of the VPBE for various outputs
*/
static int venc_set_dac(struct v4l2_subdev *sd, u32 out_index)
{
switch (out_index) {
case 0:
v4l2_dbg(debug, 1, sd, "Setting output to Composite\n");
venc_write(sd, VENC_DACSEL, 0);
break;
case 1:
v4l2_dbg(debug, 1, sd, "Setting output to Component\n");
venc_write(sd, VENC_DACSEL, VDAC_COMPONENT);
break;
case 2:
v4l2_dbg(debug, 1, sd, "Setting output to S-video\n");
venc_write(sd, VENC_DACSEL, VDAC_S_VIDEO);
break;
default:
return -EINVAL;
}
return 0;
}
static void venc_enabledigitaloutput(struct v4l2_subdev *sd, int benable)
{
struct venc_state *venc = to_state(sd);
v4l2_dbg(debug, 2, sd, "venc_enabledigitaloutput\n");
if (benable) {
venc_write(sd, VENC_VMOD, 0);
venc_write(sd, VENC_CVBS, 0);
venc_write(sd, VENC_LCDOUT, 0);
venc_write(sd, VENC_HSPLS, 0);
venc_write(sd, VENC_HSTART, 0);
venc_write(sd, VENC_HVALID, 0);
venc_write(sd, VENC_HINT, 0);
venc_write(sd, VENC_VSPLS, 0);
venc_write(sd, VENC_VSTART, 0);
venc_write(sd, VENC_VVALID, 0);
venc_write(sd, VENC_VINT, 0);
venc_write(sd, VENC_YCCCTL, 0);
venc_write(sd, VENC_DACSEL, 0);
} else {
venc_write(sd, VENC_VMOD, 0);
/* disable VCLK output pin enable */
venc_write(sd, VENC_VIDCTL, 0x141);
/* Disable output sync pins */
venc_write(sd, VENC_SYNCCTL, 0);
/* Disable DCLOCK */
venc_write(sd, VENC_DCLKCTL, 0);
venc_write(sd, VENC_DRGBX1, 0x0000057C);
/* Disable LCD output control (accepting default polarity) */
venc_write(sd, VENC_LCDOUT, 0);
if (venc->venc_type != VPBE_VERSION_3)
venc_write(sd, VENC_CMPNT, 0x100);
venc_write(sd, VENC_HSPLS, 0);
venc_write(sd, VENC_HINT, 0);
venc_write(sd, VENC_HSTART, 0);
venc_write(sd, VENC_HVALID, 0);
venc_write(sd, VENC_VSPLS, 0);
venc_write(sd, VENC_VINT, 0);
venc_write(sd, VENC_VSTART, 0);
venc_write(sd, VENC_VVALID, 0);
venc_write(sd, VENC_HSDLY, 0);
venc_write(sd, VENC_VSDLY, 0);
venc_write(sd, VENC_YCCCTL, 0);
venc_write(sd, VENC_VSTARTA, 0);
/* Set OSD clock and OSD Sync Adavance registers */
venc_write(sd, VENC_OSDCLK0, 1);
venc_write(sd, VENC_OSDCLK1, 2);
}
}
static void
venc_enable_vpss_clock(int venc_type,
enum vpbe_enc_timings_type type,
unsigned int pclock)
{
if (venc_type == VPBE_VERSION_1)
return;
if (venc_type == VPBE_VERSION_2 && (type == VPBE_ENC_STD || (type ==
VPBE_ENC_DV_TIMINGS && pclock <= 27000000))) {
vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
vpss_enable_clock(VPSS_VPBE_CLOCK, 1);
return;
}
if (venc_type == VPBE_VERSION_3 && type == VPBE_ENC_STD)
vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 0);
}
#define VDAC_CONFIG_SD_V3 0x0E21A6B6
#define VDAC_CONFIG_SD_V2 0x081141CF
/*
* setting NTSC mode
*/
static int venc_set_ntsc(struct v4l2_subdev *sd)
{
u32 val;
struct venc_state *venc = to_state(sd);
struct venc_platform_data *pdata = venc->pdata;
v4l2_dbg(debug, 2, sd, "venc_set_ntsc\n");
/* Setup clock at VPSS & VENC for SD */
vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
if (pdata->setup_clock(VPBE_ENC_STD, V4L2_STD_525_60) < 0)
return -EINVAL;
venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_STD, V4L2_STD_525_60);
venc_enabledigitaloutput(sd, 0);
if (venc->venc_type == VPBE_VERSION_3) {
venc_write(sd, VENC_CLKCTL, 0x01);
venc_write(sd, VENC_VIDCTL, 0);
val = vdaccfg_write(sd, VDAC_CONFIG_SD_V3);
} else if (venc->venc_type == VPBE_VERSION_2) {
venc_write(sd, VENC_CLKCTL, 0x01);
venc_write(sd, VENC_VIDCTL, 0);
vdaccfg_write(sd, VDAC_CONFIG_SD_V2);
} else {
/* to set VENC CLK DIV to 1 - final clock is 54 MHz */
venc_modify(sd, VENC_VIDCTL, 0, 1 << 1);
/* Set REC656 Mode */
venc_write(sd, VENC_YCCCTL, 0x1);
venc_modify(sd, VENC_VDPRO, 0, VENC_VDPRO_DAFRQ);
venc_modify(sd, VENC_VDPRO, 0, VENC_VDPRO_DAUPS);
}
venc_write(sd, VENC_VMOD, 0);
venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
VENC_VMOD_VIE);
venc_modify(sd, VENC_VMOD, (0 << VENC_VMOD_VMD), VENC_VMOD_VMD);
venc_modify(sd, VENC_VMOD, (0 << VENC_VMOD_TVTYP_SHIFT),
VENC_VMOD_TVTYP);
venc_write(sd, VENC_DACTST, 0x0);
venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
return 0;
}
/*
* setting PAL mode
*/
static int venc_set_pal(struct v4l2_subdev *sd)
{
struct venc_state *venc = to_state(sd);
v4l2_dbg(debug, 2, sd, "venc_set_pal\n");
/* Setup clock at VPSS & VENC for SD */
vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
if (venc->pdata->setup_clock(VPBE_ENC_STD, V4L2_STD_625_50) < 0)
return -EINVAL;
venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_STD, V4L2_STD_625_50);
venc_enabledigitaloutput(sd, 0);
if (venc->venc_type == VPBE_VERSION_3) {
venc_write(sd, VENC_CLKCTL, 0x1);
venc_write(sd, VENC_VIDCTL, 0);
vdaccfg_write(sd, VDAC_CONFIG_SD_V3);
} else if (venc->venc_type == VPBE_VERSION_2) {
venc_write(sd, VENC_CLKCTL, 0x1);
venc_write(sd, VENC_VIDCTL, 0);
vdaccfg_write(sd, VDAC_CONFIG_SD_V2);
} else {
/* to set VENC CLK DIV to 1 - final clock is 54 MHz */
venc_modify(sd, VENC_VIDCTL, 0, 1 << 1);
/* Set REC656 Mode */
venc_write(sd, VENC_YCCCTL, 0x1);
}
venc_modify(sd, VENC_SYNCCTL, 1 << VENC_SYNCCTL_OVD_SHIFT,
VENC_SYNCCTL_OVD);
venc_write(sd, VENC_VMOD, 0);
venc_modify(sd, VENC_VMOD,
(1 << VENC_VMOD_VIE_SHIFT),
VENC_VMOD_VIE);
venc_modify(sd, VENC_VMOD,
(0 << VENC_VMOD_VMD), VENC_VMOD_VMD);
venc_modify(sd, VENC_VMOD,
(1 << VENC_VMOD_TVTYP_SHIFT),
VENC_VMOD_TVTYP);
venc_write(sd, VENC_DACTST, 0x0);
venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
return 0;
}
#define VDAC_CONFIG_HD_V2 0x081141EF
/*
* venc_set_480p59_94
*
* This function configures the video encoder to EDTV(525p) component setting.
*/
static int venc_set_480p59_94(struct v4l2_subdev *sd)
{
struct venc_state *venc = to_state(sd);
struct venc_platform_data *pdata = venc->pdata;
v4l2_dbg(debug, 2, sd, "venc_set_480p59_94\n");
if (venc->venc_type != VPBE_VERSION_1 &&
venc->venc_type != VPBE_VERSION_2)
return -EINVAL;
/* Setup clock at VPSS & VENC for SD */
if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 27000000) < 0)
return -EINVAL;
venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 27000000);
venc_enabledigitaloutput(sd, 0);
if (venc->venc_type == VPBE_VERSION_2)
vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
venc_write(sd, VENC_OSDCLK0, 0);
venc_write(sd, VENC_OSDCLK1, 1);
if (venc->venc_type == VPBE_VERSION_1) {
venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAFRQ,
VENC_VDPRO_DAFRQ);
venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAUPS,
VENC_VDPRO_DAUPS);
}
venc_write(sd, VENC_VMOD, 0);
venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
VENC_VMOD_VIE);
venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
venc_modify(sd, VENC_VMOD, (HDTV_525P << VENC_VMOD_TVTYP_SHIFT),
VENC_VMOD_TVTYP);
venc_modify(sd, VENC_VMOD, VENC_VMOD_VDMD_YCBCR8 <<
VENC_VMOD_VDMD_SHIFT, VENC_VMOD_VDMD);
venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
return 0;
}
/*
* venc_set_625p
*
* This function configures the video encoder to HDTV(625p) component setting
*/
static int venc_set_576p50(struct v4l2_subdev *sd)
{
struct venc_state *venc = to_state(sd);
struct venc_platform_data *pdata = venc->pdata;
v4l2_dbg(debug, 2, sd, "venc_set_576p50\n");
if (venc->venc_type != VPBE_VERSION_1 &&
venc->venc_type != VPBE_VERSION_2)
return -EINVAL;
/* Setup clock at VPSS & VENC for SD */
if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 27000000) < 0)
return -EINVAL;
venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 27000000);
venc_enabledigitaloutput(sd, 0);
if (venc->venc_type == VPBE_VERSION_2)
vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
venc_write(sd, VENC_OSDCLK0, 0);
venc_write(sd, VENC_OSDCLK1, 1);
if (venc->venc_type == VPBE_VERSION_1) {
venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAFRQ,
VENC_VDPRO_DAFRQ);
venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAUPS,
VENC_VDPRO_DAUPS);
}
venc_write(sd, VENC_VMOD, 0);
venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
VENC_VMOD_VIE);
venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
venc_modify(sd, VENC_VMOD, (HDTV_625P << VENC_VMOD_TVTYP_SHIFT),
VENC_VMOD_TVTYP);
venc_modify(sd, VENC_VMOD, VENC_VMOD_VDMD_YCBCR8 <<
VENC_VMOD_VDMD_SHIFT, VENC_VMOD_VDMD);
venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
return 0;
}
/*
* venc_set_720p60_internal - Setup 720p60 in venc for dm365 only
*/
static int venc_set_720p60_internal(struct v4l2_subdev *sd)
{
struct venc_state *venc = to_state(sd);
struct venc_platform_data *pdata = venc->pdata;
if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 74250000) < 0)
return -EINVAL;
venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 74250000);
venc_enabledigitaloutput(sd, 0);
venc_write(sd, VENC_OSDCLK0, 0);
venc_write(sd, VENC_OSDCLK1, 1);
venc_write(sd, VENC_VMOD, 0);
/* DM365 component HD mode */
venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
VENC_VMOD_VIE);
venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
venc_modify(sd, VENC_VMOD, (HDTV_720P << VENC_VMOD_TVTYP_SHIFT),
VENC_VMOD_TVTYP);
venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
venc_write(sd, VENC_XHINTVL, 0);
return 0;
}
/*
* venc_set_1080i30_internal - Setup 1080i30 in venc for dm365 only
*/
static int venc_set_1080i30_internal(struct v4l2_subdev *sd)
{
struct venc_state *venc = to_state(sd);
struct venc_platform_data *pdata = venc->pdata;
if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 74250000) < 0)
return -EINVAL;
venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 74250000);
venc_enabledigitaloutput(sd, 0);
venc_write(sd, VENC_OSDCLK0, 0);
venc_write(sd, VENC_OSDCLK1, 1);
venc_write(sd, VENC_VMOD, 0);
/* DM365 component HD mode */
venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
VENC_VMOD_VIE);
venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
venc_modify(sd, VENC_VMOD, (HDTV_1080I << VENC_VMOD_TVTYP_SHIFT),
VENC_VMOD_TVTYP);
venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
venc_write(sd, VENC_XHINTVL, 0);
return 0;
}
static int venc_s_std_output(struct v4l2_subdev *sd, v4l2_std_id norm)
{
v4l2_dbg(debug, 1, sd, "venc_s_std_output\n");
if (norm & V4L2_STD_525_60)
return venc_set_ntsc(sd);
else if (norm & V4L2_STD_625_50)
return venc_set_pal(sd);
return -EINVAL;
}
static int venc_s_dv_timings(struct v4l2_subdev *sd,
struct v4l2_dv_timings *dv_timings)
{
struct venc_state *venc = to_state(sd);
u32 height = dv_timings->bt.height;
int ret;
v4l2_dbg(debug, 1, sd, "venc_s_dv_timings\n");
if (height == 576)
return venc_set_576p50(sd);
else if (height == 480)
return venc_set_480p59_94(sd);
else if ((height == 720) &&
(venc->venc_type == VPBE_VERSION_2)) {
/* TBD setup internal 720p mode here */
ret = venc_set_720p60_internal(sd);
/* for DM365 VPBE, there is DAC inside */
vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
return ret;
} else if ((height == 1080) &&
(venc->venc_type == VPBE_VERSION_2)) {
/* TBD setup internal 1080i mode here */
ret = venc_set_1080i30_internal(sd);
/* for DM365 VPBE, there is DAC inside */
vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
return ret;
}
return -EINVAL;
}
static int venc_s_routing(struct v4l2_subdev *sd, u32 input, u32 output,
u32 config)
{
struct venc_state *venc = to_state(sd);
int ret;
v4l2_dbg(debug, 1, sd, "venc_s_routing\n");
ret = venc_set_dac(sd, output);
if (!ret)
venc->output = output;
return ret;
}
static long venc_ioctl(struct v4l2_subdev *sd,
unsigned int cmd,
void *arg)
{
u32 val;
switch (cmd) {
case VENC_GET_FLD:
val = venc_read(sd, VENC_VSTAT);
*((int *)arg) = ((val & VENC_VSTAT_FIDST) ==
VENC_VSTAT_FIDST);
break;
default:
v4l2_err(sd, "Wrong IOCTL cmd\n");
break;
}
return 0;
}
static const struct v4l2_subdev_core_ops venc_core_ops = {
.ioctl = venc_ioctl,
};
static const struct v4l2_subdev_video_ops venc_video_ops = {
.s_routing = venc_s_routing,
.s_std_output = venc_s_std_output,
.s_dv_timings = venc_s_dv_timings,
};
static const struct v4l2_subdev_ops venc_ops = {
.core = &venc_core_ops,
.video = &venc_video_ops,
};
static int venc_initialize(struct v4l2_subdev *sd)
{
struct venc_state *venc = to_state(sd);
int ret;
/* Set default to output to composite and std to NTSC */
venc->output = 0;
venc->std = V4L2_STD_525_60;
ret = venc_s_routing(sd, 0, venc->output, 0);
if (ret < 0) {
v4l2_err(sd, "Error setting output during init\n");
return -EINVAL;
}
ret = venc_s_std_output(sd, venc->std);
if (ret < 0) {
v4l2_err(sd, "Error setting std during init\n");
return -EINVAL;
}
return ret;
}
static int venc_device_get(struct device *dev, void *data)
{
struct platform_device *pdev = to_platform_device(dev);
struct venc_state **venc = data;
if (strstr(pdev->name, "vpbe-venc") != NULL)
*venc = platform_get_drvdata(pdev);
return 0;
}
struct v4l2_subdev *venc_sub_dev_init(struct v4l2_device *v4l2_dev,
const char *venc_name)
{
struct venc_state *venc;
int err;
err = bus_for_each_dev(&platform_bus_type, NULL, &venc,
venc_device_get);
if (venc == NULL)
return NULL;
v4l2_subdev_init(&venc->sd, &venc_ops);
strcpy(venc->sd.name, venc_name);
if (v4l2_device_register_subdev(v4l2_dev, &venc->sd) < 0) {
v4l2_err(v4l2_dev,
"vpbe unable to register venc sub device\n");
return NULL;
}
if (venc_initialize(&venc->sd)) {
v4l2_err(v4l2_dev,
"vpbe venc initialization failed\n");
return NULL;
}
return &venc->sd;
}
EXPORT_SYMBOL(venc_sub_dev_init);
static int venc_probe(struct platform_device *pdev)
{
const struct platform_device_id *pdev_id;
struct venc_state *venc;
struct resource *res;
if (!pdev->dev.platform_data) {
dev_err(&pdev->dev, "No platform data for VENC sub device");
return -EINVAL;
}
pdev_id = platform_get_device_id(pdev);
if (!pdev_id)
return -EINVAL;
venc = devm_kzalloc(&pdev->dev, sizeof(struct venc_state), GFP_KERNEL);
if (venc == NULL)
return -ENOMEM;
venc->venc_type = pdev_id->driver_data;
venc->pdev = &pdev->dev;
venc->pdata = pdev->dev.platform_data;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
venc->venc_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(venc->venc_base))
return PTR_ERR(venc->venc_base);
if (venc->venc_type != VPBE_VERSION_1) {
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
venc->vdaccfg_reg = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(venc->vdaccfg_reg))
return PTR_ERR(venc->vdaccfg_reg);
}
spin_lock_init(&venc->lock);
platform_set_drvdata(pdev, venc);
dev_notice(venc->pdev, "VENC sub device probe success\n");
return 0;
}
static int venc_remove(struct platform_device *pdev)
{
return 0;
}
static struct platform_driver venc_driver = {
.probe = venc_probe,
.remove = venc_remove,
.driver = {
.name = MODULE_NAME,
},
.id_table = vpbe_venc_devtype
};
module_platform_driver(venc_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("VPBE VENC Driver");
MODULE_AUTHOR("Texas Instruments");
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