/*
* adv7343 - ADV7343 Video Encoder Driver
*
* The encoder hardware does not support SECAM.
*
* Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/videodev2.h>
#include <linux/uaccess.h>
#include <media/adv7343.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
#include "adv7343_regs.h"
MODULE_DESCRIPTION("ADV7343 video encoder driver");
MODULE_LICENSE("GPL");
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level 0-1");
struct adv7343_state {
struct v4l2_subdev sd;
u8 reg00;
u8 reg01;
u8 reg02;
u8 reg35;
u8 reg80;
u8 reg82;
int bright;
int hue;
int gain;
u32 output;
v4l2_std_id std;
};
static inline struct adv7343_state *to_state(struct v4l2_subdev *sd)
{
return container_of(sd, struct adv7343_state, sd);
}
static inline int adv7343_write(struct v4l2_subdev *sd, u8 reg, u8 value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return i2c_smbus_write_byte_data(client, reg, value);
}
static const u8 adv7343_init_reg_val[] = {
ADV7343_SOFT_RESET, ADV7343_SOFT_RESET_DEFAULT,
ADV7343_POWER_MODE_REG, ADV7343_POWER_MODE_REG_DEFAULT,
ADV7343_HD_MODE_REG1, ADV7343_HD_MODE_REG1_DEFAULT,
ADV7343_HD_MODE_REG2, ADV7343_HD_MODE_REG2_DEFAULT,
ADV7343_HD_MODE_REG3, ADV7343_HD_MODE_REG3_DEFAULT,
ADV7343_HD_MODE_REG4, ADV7343_HD_MODE_REG4_DEFAULT,
ADV7343_HD_MODE_REG5, ADV7343_HD_MODE_REG5_DEFAULT,
ADV7343_HD_MODE_REG6, ADV7343_HD_MODE_REG6_DEFAULT,
ADV7343_HD_MODE_REG7, ADV7343_HD_MODE_REG7_DEFAULT,
ADV7343_SD_MODE_REG1, ADV7343_SD_MODE_REG1_DEFAULT,
ADV7343_SD_MODE_REG2, ADV7343_SD_MODE_REG2_DEFAULT,
ADV7343_SD_MODE_REG3, ADV7343_SD_MODE_REG3_DEFAULT,
ADV7343_SD_MODE_REG4, ADV7343_SD_MODE_REG4_DEFAULT,
ADV7343_SD_MODE_REG5, ADV7343_SD_MODE_REG5_DEFAULT,
ADV7343_SD_MODE_REG6, ADV7343_SD_MODE_REG6_DEFAULT,
ADV7343_SD_MODE_REG7, ADV7343_SD_MODE_REG7_DEFAULT,
ADV7343_SD_MODE_REG8, ADV7343_SD_MODE_REG8_DEFAULT,
ADV7343_SD_HUE_REG, ADV7343_SD_HUE_REG_DEFAULT,
ADV7343_SD_CGMS_WSS0, ADV7343_SD_CGMS_WSS0_DEFAULT,
ADV7343_SD_BRIGHTNESS_WSS, ADV7343_SD_BRIGHTNESS_WSS_DEFAULT,
};
/*
* 2^32
* FSC(reg) = FSC (HZ) * --------
* 27000000
*/
static const struct adv7343_std_info stdinfo[] = {
{
/* FSC(Hz) = 3,579,545.45 Hz */
SD_STD_NTSC, 569408542, V4L2_STD_NTSC,
}, {
/* FSC(Hz) = 3,575,611.00 Hz */
SD_STD_PAL_M, 568782678, V4L2_STD_PAL_M,
}, {
/* FSC(Hz) = 3,582,056.00 */
SD_STD_PAL_N, 569807903, V4L2_STD_PAL_Nc,
}, {
/* FSC(Hz) = 4,433,618.75 Hz */
SD_STD_PAL_N, 705268427, V4L2_STD_PAL_N,
}, {
/* FSC(Hz) = 4,433,618.75 Hz */
SD_STD_PAL_BDGHI, 705268427, V4L2_STD_PAL,
}, {
/* FSC(Hz) = 4,433,618.75 Hz */
SD_STD_NTSC, 705268427, V4L2_STD_NTSC_443,
}, {
/* FSC(Hz) = 4,433,618.75 Hz */
SD_STD_PAL_M, 705268427, V4L2_STD_PAL_60,
},
};
static int adv7343_setstd(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct adv7343_state *state = to_state(sd);
struct adv7343_std_info *std_info;
int output_idx, num_std;
char *fsc_ptr;
u8 reg, val;
int err = 0;
int i = 0;
output_idx = state->output;
std_info = (struct adv7343_std_info *)stdinfo;
num_std = ARRAY_SIZE(stdinfo);
for (i = 0; i < num_std; i++) {
if (std_info[i].stdid & std)
break;
}
if (i == num_std) {
v4l2_dbg(1, debug, sd,
"Invalid std or std is not supported: %llx\n",
(unsigned long long)std);
return -EINVAL;
}
/* Set the standard */
val = state->reg80 & (~(SD_STD_MASK));
val |= std_info[i].standard_val3;
err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
if (err < 0)
goto setstd_exit;
state->reg80 = val;
/* Configure the input mode register */
val = state->reg01 & (~((u8) INPUT_MODE_MASK));
val |= SD_INPUT_MODE;
err = adv7343_write(sd, ADV7343_MODE_SELECT_REG, val);
if (err < 0)
goto setstd_exit;
state->reg01 = val;
/* Program the sub carrier frequency registers */
fsc_ptr = (unsigned char *)&std_info[i].fsc_val;
reg = ADV7343_FSC_REG0;
for (i = 0; i < 4; i++, reg++, fsc_ptr++) {
err = adv7343_write(sd, reg, *fsc_ptr);
if (err < 0)
goto setstd_exit;
}
val = state->reg80;
/* Filter settings */
if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443))
val &= 0x03;
else if (std & ~V4L2_STD_SECAM)
val |= 0x04;
err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
if (err < 0)
goto setstd_exit;
state->reg80 = val;
setstd_exit:
if (err != 0)
v4l2_err(sd, "Error setting std, write failed\n");
return err;
}
static int adv7343_setoutput(struct v4l2_subdev *sd, u32 output_type)
{
struct adv7343_state *state = to_state(sd);
unsigned char val;
int err = 0;
if (output_type > ADV7343_SVIDEO_ID) {
v4l2_dbg(1, debug, sd,
"Invalid output type or output type not supported:%d\n",
output_type);
return -EINVAL;
}
/* Enable Appropriate DAC */
val = state->reg00 & 0x03;
if (output_type == ADV7343_COMPOSITE_ID)
val |= ADV7343_COMPOSITE_POWER_VALUE;
else if (output_type == ADV7343_COMPONENT_ID)
val |= ADV7343_COMPONENT_POWER_VALUE;
else
val |= ADV7343_SVIDEO_POWER_VALUE;
err = adv7343_write(sd, ADV7343_POWER_MODE_REG, val);
if (err < 0)
goto setoutput_exit;
state->reg00 = val;
/* Enable YUV output */
val = state->reg02 | YUV_OUTPUT_SELECT;
err = adv7343_write(sd, ADV7343_MODE_REG0, val);
if (err < 0)
goto setoutput_exit;
state->reg02 = val;
/* configure SD DAC Output 2 and SD DAC Output 1 bit to zero */
val = state->reg82 & (SD_DAC_1_DI & SD_DAC_2_DI);
err = adv7343_write(sd, ADV7343_SD_MODE_REG2, val);
if (err < 0)
goto setoutput_exit;
state->reg82 = val;
/* configure ED/HD Color DAC Swap and ED/HD RGB Input Enable bit to
* zero */
val = state->reg35 & (HD_RGB_INPUT_DI & HD_DAC_SWAP_DI);
err = adv7343_write(sd, ADV7343_HD_MODE_REG6, val);
if (err < 0)
goto setoutput_exit;
state->reg35 = val;
setoutput_exit:
if (err != 0)
v4l2_err(sd, "Error setting output, write failed\n");
return err;
}
static int adv7343_log_status(struct v4l2_subdev *sd)
{
struct adv7343_state *state = to_state(sd);
v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std);
v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" :
((state->output == 1) ? "Component" : "S-Video"));
return 0;
}
static int adv7343_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
{
switch (qc->id) {
case V4L2_CID_BRIGHTNESS:
return v4l2_ctrl_query_fill(qc, ADV7343_BRIGHTNESS_MIN,
ADV7343_BRIGHTNESS_MAX, 1,
ADV7343_BRIGHTNESS_DEF);
case V4L2_CID_HUE:
return v4l2_ctrl_query_fill(qc, ADV7343_HUE_MIN,
ADV7343_HUE_MAX, 1 ,
ADV7343_HUE_DEF);
case V4L2_CID_GAIN:
return v4l2_ctrl_query_fill(qc, ADV7343_GAIN_MIN,
ADV7343_GAIN_MAX, 1,
ADV7343_GAIN_DEF);
default:
break;
}
return 0;
}
static int adv7343_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct adv7343_state *state = to_state(sd);
int err = 0;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
if (ctrl->value < ADV7343_BRIGHTNESS_MIN ||
ctrl->value > ADV7343_BRIGHTNESS_MAX) {
v4l2_dbg(1, debug, sd,
"invalid brightness settings %d\n",
ctrl->value);
return -ERANGE;
}
state->bright = ctrl->value;
err = adv7343_write(sd, ADV7343_SD_BRIGHTNESS_WSS,
state->bright);
break;
case V4L2_CID_HUE:
if (ctrl->value < ADV7343_HUE_MIN ||
ctrl->value > ADV7343_HUE_MAX) {
v4l2_dbg(1, debug, sd, "invalid hue settings %d\n",
ctrl->value);
return -ERANGE;
}
state->hue = ctrl->value;
err = adv7343_write(sd, ADV7343_SD_HUE_REG, state->hue);
break;
case V4L2_CID_GAIN:
if (ctrl->value < ADV7343_GAIN_MIN ||
ctrl->value > ADV7343_GAIN_MAX) {
v4l2_dbg(1, debug, sd, "invalid gain settings %d\n",
ctrl->value);
return -ERANGE;
}
if ((ctrl->value > POSITIVE_GAIN_MAX) &&
(ctrl->value < NEGATIVE_GAIN_MIN)) {
v4l2_dbg(1, debug, sd,
"gain settings not within the specified range\n");
return -ERANGE;
}
state->gain = ctrl->value;
err = adv7343_write(sd, ADV7343_DAC2_OUTPUT_LEVEL, state->gain);
break;
default:
return -EINVAL;
}
if (err < 0)
v4l2_err(sd, "Failed to set the encoder controls\n");
return err;
}
static int adv7343_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct adv7343_state *state = to_state(sd);
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
ctrl->value = state->bright;
break;
case V4L2_CID_HUE:
ctrl->value = state->hue;
break;
case V4L2_CID_GAIN:
ctrl->value = state->gain;
break;
default:
return -EINVAL;
}
return 0;
}
static int adv7343_g_chip_ident(struct v4l2_subdev *sd,
struct v4l2_dbg_chip_ident *chip)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7343, 0);
}
static const struct v4l2_subdev_core_ops adv7343_core_ops = {
.log_status = adv7343_log_status,
.g_chip_ident = adv7343_g_chip_ident,
.g_ctrl = adv7343_g_ctrl,
.s_ctrl = adv7343_s_ctrl,
.queryctrl = adv7343_queryctrl,
};
static int adv7343_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct adv7343_state *state = to_state(sd);
int err = 0;
if (state->std == std)
return 0;
err = adv7343_setstd(sd, std);
if (!err)
state->std = std;
return err;
}
static int adv7343_s_routing(struct v4l2_subdev *sd,
u32 input, u32 output, u32 config)
{
struct adv7343_state *state = to_state(sd);
int err = 0;
if (state->output == output)
return 0;
err = adv7343_setoutput(sd, output);
if (!err)
state->output = output;
return err;
}
static const struct v4l2_subdev_video_ops adv7343_video_ops = {
.s_std_output = adv7343_s_std_output,
.s_routing = adv7343_s_routing,
};
static const struct v4l2_subdev_ops adv7343_ops = {
.core = &adv7343_core_ops,
.video = &adv7343_video_ops,
};
static int adv7343_initialize(struct v4l2_subdev *sd)
{
struct adv7343_state *state = to_state(sd);
int err = 0;
int i;
for (i = 0; i < ARRAY_SIZE(adv7343_init_reg_val); i += 2) {
err = adv7343_write(sd, adv7343_init_reg_val[i],
adv7343_init_reg_val[i+1]);
if (err) {
v4l2_err(sd, "Error initializing\n");
return err;
}
}
/* Configure for default video standard */
err = adv7343_setoutput(sd, state->output);
if (err < 0) {
v4l2_err(sd, "Error setting output during init\n");
return -EINVAL;
}
err = adv7343_setstd(sd, state->std);
if (err < 0) {
v4l2_err(sd, "Error setting std during init\n");
return -EINVAL;
}
return err;
}
static int adv7343_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct adv7343_state *state;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
state = kzalloc(sizeof(struct adv7343_state), GFP_KERNEL);
if (state == NULL)
return -ENOMEM;
state->reg00 = 0x80;
state->reg01 = 0x00;
state->reg02 = 0x20;
state->reg35 = 0x00;
state->reg80 = ADV7343_SD_MODE_REG1_DEFAULT;
state->reg82 = ADV7343_SD_MODE_REG2_DEFAULT;
state->output = ADV7343_COMPOSITE_ID;
state->std = V4L2_STD_NTSC;
v4l2_i2c_subdev_init(&state->sd, client, &adv7343_ops);
return adv7343_initialize(&state->sd);
}
static int adv7343_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
v4l2_device_unregister_subdev(sd);
kfree(to_state(sd));
return 0;
}
static const struct i2c_device_id adv7343_id[] = {
{"adv7343", 0},
{},
};
MODULE_DEVICE_TABLE(i2c, adv7343_id);
static struct i2c_driver adv7343_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "adv7343",
},
.probe = adv7343_probe,
.remove = adv7343_remove,
.id_table = adv7343_id,
};
static __init int init_adv7343(void)
{
return i2c_add_driver(&adv7343_driver);
}
static __exit void exit_adv7343(void)
{
i2c_del_driver(&adv7343_driver);
}
module_init(init_adv7343);
module_exit(exit_adv7343);
