- 根目录:
- drivers
- media
- i2c
- adv7343.c
/*
* 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 <linux/of.h>
#include <media/adv7343.h>
#include <media/v4l2-async.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-of.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;
struct v4l2_ctrl_handler hdl;
const struct adv7343_platform_data *pdata;
u8 reg00;
u8 reg01;
u8 reg02;
u8 reg35;
u8 reg80;
u8 reg82;
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 struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
return &container_of(ctrl->handler, struct adv7343_state, hdl)->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 num_std;
char *fsc_ptr;
u8 reg, val;
int err = 0;
int i = 0;
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;
/* configure default configuration */
if (!state->pdata)
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;
else
val = state->pdata->mode_config.sleep_mode << 0 |
state->pdata->mode_config.pll_control << 1 |
state->pdata->mode_config.dac[2] << 2 |
state->pdata->mode_config.dac[1] << 3 |
state->pdata->mode_config.dac[0] << 4 |
state->pdata->mode_config.dac[5] << 5 |
state->pdata->mode_config.dac[4] << 6 |
state->pdata->mode_config.dac[3] << 7;
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);
if (state->pdata && state->pdata->sd_config.sd_dac_out[0])
val = val | (state->pdata->sd_config.sd_dac_out[0] << 1);
else if (state->pdata && !state->pdata->sd_config.sd_dac_out[0])
val = val & ~(state->pdata->sd_config.sd_dac_out[0] << 1);
if (state->pdata && state->pdata->sd_config.sd_dac_out[1])
val = val | (state->pdata->sd_config.sd_dac_out[1] << 2);
else if (state->pdata && !state->pdata->sd_config.sd_dac_out[1])
val = val & ~(state->pdata->sd_config.sd_dac_out[1] << 2);
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_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
return adv7343_write(sd, ADV7343_SD_BRIGHTNESS_WSS,
ctrl->val);
case V4L2_CID_HUE:
return adv7343_write(sd, ADV7343_SD_HUE_REG, ctrl->val);
case V4L2_CID_GAIN:
return adv7343_write(sd, ADV7343_DAC2_OUTPUT_LEVEL, ctrl->val);
}
return -EINVAL;
}
static const struct v4l2_ctrl_ops adv7343_ctrl_ops = {
.s_ctrl = adv7343_s_ctrl,
};
static const struct v4l2_subdev_core_ops adv7343_core_ops = {
.log_status = adv7343_log_status,
.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
.g_ctrl = v4l2_subdev_g_ctrl,
.s_ctrl = v4l2_subdev_s_ctrl,
.queryctrl = v4l2_subdev_queryctrl,
.querymenu = v4l2_subdev_querymenu,
};
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 struct adv7343_platform_data *
adv7343_get_pdata(struct i2c_client *client)
{
struct adv7343_platform_data *pdata;
struct device_node *np;
if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
return client->dev.platform_data;
np = v4l2_of_get_next_endpoint(client->dev.of_node, NULL);
if (!np)
return NULL;
pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
goto done;
pdata->mode_config.sleep_mode =
of_property_read_bool(np, "adi,power-mode-sleep-mode");
pdata->mode_config.pll_control =
of_property_read_bool(np, "adi,power-mode-pll-ctrl");
of_property_read_u32_array(np, "adi,dac-enable",
pdata->mode_config.dac, 6);
of_property_read_u32_array(np, "adi,sd-dac-enable",
pdata->sd_config.sd_dac_out, 2);
done:
of_node_put(np);
return pdata;
}
static int adv7343_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct adv7343_state *state;
int err;
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 = devm_kzalloc(&client->dev, sizeof(struct adv7343_state),
GFP_KERNEL);
if (state == NULL)
return -ENOMEM;
/* Copy board specific information here */
state->pdata = adv7343_get_pdata(client);
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);
v4l2_ctrl_handler_init(&state->hdl, 2);
v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
V4L2_CID_BRIGHTNESS, ADV7343_BRIGHTNESS_MIN,
ADV7343_BRIGHTNESS_MAX, 1,
ADV7343_BRIGHTNESS_DEF);
v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
V4L2_CID_HUE, ADV7343_HUE_MIN,
ADV7343_HUE_MAX, 1,
ADV7343_HUE_DEF);
v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
V4L2_CID_GAIN, ADV7343_GAIN_MIN,
ADV7343_GAIN_MAX, 1,
ADV7343_GAIN_DEF);
state->sd.ctrl_handler = &state->hdl;
if (state->hdl.error) {
err = state->hdl.error;
goto done;
}
v4l2_ctrl_handler_setup(&state->hdl);
err = adv7343_initialize(&state->sd);
if (err)
goto done;
err = v4l2_async_register_subdev(&state->sd);
done:
if (err < 0)
v4l2_ctrl_handler_free(&state->hdl);
return err;
}
static int adv7343_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct adv7343_state *state = to_state(sd);
v4l2_async_unregister_subdev(&state->sd);
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(&state->hdl);
return 0;
}
static const struct i2c_device_id adv7343_id[] = {
{"adv7343", 0},
{},
};
MODULE_DEVICE_TABLE(i2c, adv7343_id);
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id adv7343_of_match[] = {
{.compatible = "adi,adv7343", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, adv7343_of_match);
#endif
static struct i2c_driver adv7343_driver = {
.driver = {
.of_match_table = of_match_ptr(adv7343_of_match),
.owner = THIS_MODULE,
.name = "adv7343",
},
.probe = adv7343_probe,
.remove = adv7343_remove,
.id_table = adv7343_id,
};
module_i2c_driver(adv7343_driver);