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android_kernel_modules_leno.../camera/drivers/media/i2c/xactor_x.c

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/*
* Support for mipi CSI data generator.
*
* Copyright (c) 2014 Intel Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
#include <linux/atomisp_platform.h>
#include <linux/delay.h>
#include <linux/module.h>
#include "xactor_x.h"
#define MODE_DEFAULT 1
#define MODE_PIXTER 1
#define MODE_XACTOR 2
unsigned int mode = MODE_DEFAULT;
module_param(mode, uint, 0644);
MODULE_PARM_DESC(mode,
"Control the mode how xactor driver operates default = 1. (1=Pixter, 2=SLE csi xactor)");
#define to_csi_xactor_dev(sd) container_of(sd, struct csi_xactor_device, sd)
static int csi_xactor_s_config(struct v4l2_subdev *sd,
int irq, void *pdata)
{
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
if (pdata == NULL)
return -ENODEV;
dev->platform_data = pdata;
mutex_lock(&dev->input_lock);
ret = dev->platform_data->csi_cfg(sd, 1);
if (ret)
goto fail_csi_cfg;
mutex_unlock(&dev->input_lock);
return 0;
fail_csi_cfg:
mutex_unlock(&dev->input_lock);
dev_err(&client->dev, "sensor power-gating failed\n");
return ret;
}
static int csi_xactor_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
media_entity_cleanup(&dev->sd.entity);
v4l2_ctrl_handler_free(&dev->ctrl_handler);
dev->platform_data->csi_cfg(sd, 0);
v4l2_device_unregister_subdev(sd);
kfree(dev);
return 0;
}
static enum xactor_contexts xactor_get_context(struct v4l2_subdev *sd)
{
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
return dev->cur_context;
}
static int csi_xactor_s_stream(struct v4l2_subdev *sd, int enable)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
if (mode == MODE_XACTOR) {
/* This is the CSI xactor test code for SLE */
void __iomem *base;
unsigned int xactor_on;
#define CSI_XACTOR_UNPAUSE_REG_ADDR 0x100000
/* lane can only be 4, 1, 2*/
#define CSI_XACTOR_PAUSE(lane, pause_en) \
(0xc5180000 | (lane<<16) | (((pause_en) ? 7 : 0)<<8))
if (strcmp(client->name, CSI_XACTOR_A_NAME) == 0) {
dev_dbg(&client->dev, "set stream on to %d port a\n", enable);
xactor_on = CSI_XACTOR_PAUSE(1, !enable);
} else if (strcmp(client->name, CSI_XACTOR_B_NAME) == 0) {
dev_dbg(&client->dev, "set stream on to %d port b\n", enable);
xactor_on = CSI_XACTOR_PAUSE(2, !enable);
} else if (strcmp(client->name, CSI_XACTOR_C_NAME) == 0) {
dev_dbg(&client->dev, "set stream on to %d port c\n", enable);
xactor_on = CSI_XACTOR_PAUSE(4, !enable);
} else {
dev_err(&client->dev, "xactor driver doesn't match!\n");
return -EINVAL;
}
base = phys_to_virt(CSI_XACTOR_UNPAUSE_REG_ADDR);
if (!base) {
dev_dbg(&client->dev, "Failed to phys_to_virt(CSI_XACTOR_UNPAUSE_REG_ADDR)\n");
return -EINVAL;
}
if (enable) {
dev_dbg(&client->dev, "waiting for sensor to start sending data\n");
usleep_range(40000000, 55000000);
}
/* only for SLE to stop MIPI xactor */
dev_dbg(&client->dev, "%s_stream: 0x%x\n", __func__, xactor_on);
*(s32 __force *)((unsigned int)base) = xactor_on;
dev_dbg(&client->dev, "vir: 0x%x, phy: 0x%x, data: 0x%x\n",
(unsigned int)base,
(unsigned int)virt_to_phys(base),
*(s32 __force *)((unsigned int)base));
} else {
dev_dbg(&client->dev, "stream on for pixter\n");
}
return 0;
}
static int get_intg_factor(struct i2c_client *client,
struct camera_mipi_info *info)
{
struct atomisp_sensor_mode_data *buf = &info->data;
if (info == NULL)
return -EINVAL;
/* Dummy values for tuning. */
buf->crop_horizontal_start = 0;
buf->crop_vertical_start = 0;
buf->crop_horizontal_end = 1000;
buf->crop_vertical_end = 1000;
buf->output_width = 1000;
buf->output_height = 1000;
buf->vt_pix_clk_freq_mhz = 19000000;
buf->coarse_integration_time_min = 0;
buf->coarse_integration_time_max_margin = 0;
buf->fine_integration_time_min = 1;
buf->fine_integration_time_max_margin = 1000;
buf->fine_integration_time_def = 1;
buf->frame_length_lines = 100000;
buf->line_length_pck = 10000;
buf->read_mode = 0;
buf->binning_factor_x = 1;
buf->binning_factor_y = 1;
return 0;
}
static int csi_xactor_g_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_frame_interval *interval)
{
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct camera_mipi_info *info = v4l2_get_subdev_hostdata(sd);
if (info == NULL)
return -EINVAL;
mutex_lock(&dev->input_lock);
/* Return the currently selected settings' maximum frame interval */
get_intg_factor(client, info);
interval->interval.numerator = 1;
interval->interval.denominator = 15;
mutex_unlock(&dev->input_lock);
return 0;
}
static int csi_xactor_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index,
enum v4l2_mbus_pixelcode *code)
{
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
*code = dev->cntx_config[0].mbus_fmt;
return 0;
}
static int csi_xactor_try_mbus_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *fmt)
{
return 0;
}
static int csi_xactor_g_mbus_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *fmt)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
struct atomisp_input_stream_info *stream_info =
(struct atomisp_input_stream_info*)fmt->reserved;
if (!fmt)
return -EINVAL;
mutex_lock(&dev->input_lock);
fmt->width = dev->cntx_config[stream_info->stream].width;
fmt->height = dev->cntx_config[stream_info->stream].height;
fmt->code = dev->cntx_config[stream_info->stream].mbus_fmt;
mutex_unlock(&dev->input_lock);
dev_dbg(&client->dev, "%s w:%d h:%d code: 0x%x stream: %d\n", __func__,
fmt->width, fmt->height, fmt->code,
stream_info->stream);
return 0;
}
static enum xactor_contexts xactor_cntx_mapping[] = {
CONTEXT_PREVIEW, /* Invalid atomisp run mode */
CONTEXT_VIDEO, /* ATOMISP_RUN_MODE_VIDEO */
CONTEXT_SNAPSHOT, /* ATOMISP_RUN_MODE_STILL_CAPTURE */
CONTEXT_SNAPSHOT, /* ATOMISP_RUN_MODE_CONTINUOUS_CAPTURE */
CONTEXT_PREVIEW, /* ATOMISP_RUN_MODE_PREVIEW */
};
static enum xactor_contexts stream_to_context[] = {
CONTEXT_SNAPSHOT,
CONTEXT_PREVIEW,
CONTEXT_PREVIEW,
CONTEXT_VIDEO
};
static int csi_xactor_s_mbus_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *fmt)
{
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct camera_mipi_info *info = v4l2_get_subdev_hostdata(sd);
struct atomisp_input_stream_info *stream_info =
(struct atomisp_input_stream_info*)fmt->reserved;
if (!fmt)
return -EINVAL;
mutex_lock(&dev->input_lock);
dev->cntx_config[stream_info->stream].width = fmt->width;
dev->cntx_config[stream_info->stream].height = fmt->height;
dev->cntx_config[stream_info->stream].mbus_fmt = fmt->code;
get_intg_factor(client, info);
stream_info->ch_id = stream_to_context[stream_info->stream];
mutex_unlock(&dev->input_lock);
dev_dbg(&client->dev, "%s w:%d h:%d code: 0x%x stream: %d\n", __func__,
fmt->width, fmt->height, fmt->code,
stream_info->stream);
return 0;
}
static int csi_xactor_s_power(struct v4l2_subdev *sd, int on)
{
return 0;
}
static long csi_xactor_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
switch (cmd) {
case ATOMISP_IOC_S_EXPOSURE:
return 0;
case ATOMISP_IOC_G_SENSOR_PRIV_INT_DATA:
return 0;
default:
return -EINVAL;
}
return 0;
}
static int
csi_xactor_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_mbus_code_enum *code)
{
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
if (code->index >= 1)
return -EINVAL;
mutex_lock(&dev->input_lock);
code->code = dev->format.code;
mutex_unlock(&dev->input_lock);
return 0;
}
static int
csi_xactor_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_frame_size_enum *fse)
{
int index = fse->index;
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
enum xactor_contexts context = xactor_get_context(sd);
mutex_lock(&dev->input_lock);
if (index >= 1) {
mutex_unlock(&dev->input_lock);
return -EINVAL;
}
fse->min_width = dev->cntx_config[context].width;
fse->min_height = dev->cntx_config[context].height;
fse->max_width = dev->cntx_config[context].width;
fse->max_height = dev->cntx_config[context].height;
mutex_unlock(&dev->input_lock);
return 0;
}
static struct v4l2_mbus_framefmt *
__csi_xactor_get_pad_format(struct csi_xactor_device *sensor,
struct v4l2_subdev_fh *fh, unsigned int pad,
enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_format(fh, pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &sensor->format;
default:
return NULL;
}
}
static int
csi_xactor_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
dev->format = fmt->format;
return 0;
}
static int
csi_xactor_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
struct v4l2_mbus_framefmt *format =
__csi_xactor_get_pad_format(dev, fh, fmt->pad, fmt->which);
fmt->format = *format;
return 0;
}
static int csi_xactor_enum_framesizes(struct v4l2_subdev *sd,
struct v4l2_frmsizeenum *fsize)
{
unsigned int index = fsize->index;
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
enum xactor_contexts context = xactor_get_context(sd);
mutex_lock(&dev->input_lock);
if (index >= 1) {
mutex_unlock(&dev->input_lock);
return -EINVAL;
}
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
fsize->discrete.width = dev->cntx_config[context].width;
fsize->discrete.height = dev->cntx_config[context].height;
fsize->reserved[0] = 1;
mutex_unlock(&dev->input_lock);
return 0;
}
static int csi_xactor_enum_frameintervals(struct v4l2_subdev *sd,
struct v4l2_frmivalenum *fival)
{
struct csi_xactor_device *dev = to_csi_xactor_dev(sd);
enum xactor_contexts context = xactor_get_context(sd);
mutex_lock(&dev->input_lock);
/* since the isp will donwscale the resolution to the right size,
* find the nearest one that will allow the isp to do so
* important to ensure that the resolution requested is padded
* correctly by the requester, which is the atomisp driver in
* this case.
*/
fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
fival->width = dev->cntx_config[context].width;
fival->height = dev->cntx_config[context].height;
fival->discrete.numerator = 1;
fival->discrete.denominator = 15;
mutex_unlock(&dev->input_lock);
return 0;
}
static const struct v4l2_subdev_core_ops xactor_core_ops = {
.queryctrl = v4l2_subdev_queryctrl,
.g_ctrl = v4l2_subdev_g_ctrl,
.s_ctrl = v4l2_subdev_s_ctrl,
.s_power = csi_xactor_s_power,
.ioctl = csi_xactor_ioctl,
};
static const struct v4l2_subdev_video_ops xactor_video_ops = {
.s_stream = csi_xactor_s_stream,
.enum_framesizes = csi_xactor_enum_framesizes,
.enum_frameintervals = csi_xactor_enum_frameintervals,
.enum_mbus_fmt = csi_xactor_enum_mbus_fmt,
.try_mbus_fmt = csi_xactor_try_mbus_fmt,
.g_mbus_fmt = csi_xactor_g_mbus_fmt,
.s_mbus_fmt = csi_xactor_s_mbus_fmt,
.g_frame_interval = csi_xactor_g_frame_interval,
};
static const struct v4l2_subdev_pad_ops csi_xactor_pad_ops = {
.enum_mbus_code = csi_xactor_enum_mbus_code,
.enum_frame_size = csi_xactor_enum_frame_size,
.get_fmt = csi_xactor_get_pad_format,
.set_fmt = csi_xactor_set_pad_format,
};
static const struct v4l2_subdev_ops xactor_ops = {
.core = &xactor_core_ops,
.video = &xactor_video_ops,
.pad = &csi_xactor_pad_ops,
};
static int csi_xactor_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct csi_xactor_device *dev = container_of(
ctrl->handler, struct csi_xactor_device, ctrl_handler);
switch (ctrl->id) {
case V4L2_CID_RUN_MODE:
dev->cur_context = xactor_cntx_mapping[ctrl->val];
break;
default:
return -EINVAL;
}
return 0;
}
static const struct v4l2_ctrl_ops ctrl_ops = {
.s_ctrl = csi_xactor_s_ctrl,
};
static const char * const ctrl_run_mode_menu[] = {
NULL,
"Video",
"Still capture",
"Continuous capture",
"Preview",
};
static const struct v4l2_ctrl_config ctrl_run_mode = {
.ops = &ctrl_ops,
.id = V4L2_CID_RUN_MODE,
.name = "run mode",
.type = V4L2_CTRL_TYPE_MENU,
.min = 1,
.def = 4,
.max = 4,
.qmenu = ctrl_run_mode_menu,
};
static const struct media_entity_operations csi_xactor_entity_ops = {
.link_setup = NULL,
};
static int csi_xactor_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct csi_xactor_device *dev;
struct camera_mipi_info *csi;
char name[2] = {0};
int ret;
/* allocate sensor device & init sub device */
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
mutex_init(&dev->input_lock);
v4l2_i2c_subdev_init(&dev->sd, client, &xactor_ops);
if (client->dev.platform_data) {
ret = csi_xactor_s_config(&dev->sd, client->irq,
client->dev.platform_data);
if (ret)
goto out_free;
}
switch(mode) {
case MODE_PIXTER:
dev_info(&client->dev, "Driver in Pixter mode\n");
break;
case MODE_XACTOR:
dev_info(&client->dev, "Driver in SLE CSI xactor mode\n");
break;
default:
dev_err(&client->dev, "Mode %d is not supported setting to default mode.\n",
mode);
mode = MODE_DEFAULT;
break;
}
dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
dev->pad.flags = MEDIA_PAD_FL_SOURCE;
dev->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
dev->format.code = V4L2_MBUS_FMT_SBGGR10_1X10;
ret = v4l2_ctrl_handler_init(&dev->ctrl_handler, 1);
if (ret) {
csi_xactor_remove(client);
return ret;
}
dev->run_mode = v4l2_ctrl_new_custom(&dev->ctrl_handler,
&ctrl_run_mode, NULL);
if (dev->ctrl_handler.error) {
csi_xactor_remove(client);
return dev->ctrl_handler.error;
}
/* Use same lock for controls as for everything else. */
dev->ctrl_handler.lock = &dev->input_lock;
dev->sd.ctrl_handler = &dev->ctrl_handler;
v4l2_ctrl_handler_setup(&dev->ctrl_handler);
/*
* sd->name is updated with sensor driver name by the v4l2.
* change it to sensor name in this case.
*/
csi = v4l2_get_subdev_hostdata(&dev->sd);
if (csi->port == ATOMISP_CAMERA_PORT_PRIMARY)
name[0] = 'a';
else if(csi->port == ATOMISP_CAMERA_PORT_SECONDARY)
name[0] = 'b';
else
name[0] = 'c';
snprintf(dev->sd.name, sizeof(dev->sd.name), "%s%s %d-%04x",
"xactor", name,
i2c_adapter_id(client->adapter), client->addr);
dev_info(&client->dev, "%s dev->sd.name: %s\n", __func__, dev->sd.name);
dev->sd.entity.ops = &csi_xactor_entity_ops;
dev->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
ret = media_entity_init(&dev->sd.entity, 1, &dev->pad, 0);
if (ret) {
csi_xactor_remove(client);
return ret;
}
return 0;
out_free:
v4l2_device_unregister_subdev(&dev->sd);
kfree(dev);
return ret;
}
static const struct i2c_device_id csi_xactor_ids[] = {
{CSI_XACTOR_A_NAME, 0},
{CSI_XACTOR_B_NAME, 0},
{CSI_XACTOR_C_NAME, 0},
{}
};
MODULE_DEVICE_TABLE(i2c, csi_xactor_ids);
static struct i2c_driver csi_xactor_driver = {
.driver = {
.owner = THIS_MODULE,
.name = CSI_XACTOR_NAME,
},
.probe = csi_xactor_probe,
.remove = csi_xactor_remove,
.id_table = csi_xactor_ids,
};
static __init int csi_xactor_init_mod(void)
{
int r = i2c_add_driver(&csi_xactor_driver);
return r;
}
static __exit void csi_xactor_exit_mod(void)
{
i2c_del_driver(&csi_xactor_driver);
}
module_init(csi_xactor_init_mod);
module_exit(csi_xactor_exit_mod);
MODULE_DESCRIPTION("A dummy sensor driver for csi data generators");
MODULE_AUTHOR("Jukka Kaartinen <jukka.o.kaartinen@intel.com>");
MODULE_LICENSE("GPL");
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