#include <linux/clk.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <media/media-entity.h>
#include <media/v4l2-device.h>
#include <media/v4l2-subdev.h>
#include <media/mipi-csi2.h>
#include "camss-tpg.h"
#include "camss.h"
static const struct tpg_format_info formats_gen1[] = {
{
MEDIA_BUS_FMT_SBGGR8_1X8,
MIPI_CSI2_DT_RAW8,
ENCODE_FORMAT_UNCOMPRESSED_8_BIT,
8,
},
{
MEDIA_BUS_FMT_SGBRG8_1X8,
MIPI_CSI2_DT_RAW8,
ENCODE_FORMAT_UNCOMPRESSED_8_BIT,
8,
},
{
MEDIA_BUS_FMT_SGRBG8_1X8,
MIPI_CSI2_DT_RAW8,
ENCODE_FORMAT_UNCOMPRESSED_8_BIT,
8,
},
{
MEDIA_BUS_FMT_SRGGB8_1X8,
MIPI_CSI2_DT_RAW8,
ENCODE_FORMAT_UNCOMPRESSED_8_BIT,
8,
},
{
MEDIA_BUS_FMT_SBGGR10_1X10,
MIPI_CSI2_DT_RAW10,
ENCODE_FORMAT_UNCOMPRESSED_10_BIT,
10,
},
{
MEDIA_BUS_FMT_SGBRG10_1X10,
MIPI_CSI2_DT_RAW10,
ENCODE_FORMAT_UNCOMPRESSED_10_BIT,
10,
},
{
MEDIA_BUS_FMT_SGRBG10_1X10,
MIPI_CSI2_DT_RAW10,
ENCODE_FORMAT_UNCOMPRESSED_10_BIT,
10,
},
{
MEDIA_BUS_FMT_SRGGB10_1X10,
MIPI_CSI2_DT_RAW10,
ENCODE_FORMAT_UNCOMPRESSED_10_BIT,
10,
},
{
MEDIA_BUS_FMT_SBGGR12_1X12,
MIPI_CSI2_DT_RAW12,
ENCODE_FORMAT_UNCOMPRESSED_12_BIT,
12,
},
{
MEDIA_BUS_FMT_SGBRG12_1X12,
MIPI_CSI2_DT_RAW12,
ENCODE_FORMAT_UNCOMPRESSED_12_BIT,
12,
},
{
MEDIA_BUS_FMT_SGRBG12_1X12,
MIPI_CSI2_DT_RAW12,
ENCODE_FORMAT_UNCOMPRESSED_12_BIT,
12,
},
{
MEDIA_BUS_FMT_SRGGB12_1X12,
MIPI_CSI2_DT_RAW12,
ENCODE_FORMAT_UNCOMPRESSED_12_BIT,
12,
},
{
MEDIA_BUS_FMT_Y8_1X8,
MIPI_CSI2_DT_RAW8,
ENCODE_FORMAT_UNCOMPRESSED_8_BIT,
8,
},
{
MEDIA_BUS_FMT_Y10_1X10,
MIPI_CSI2_DT_RAW10,
ENCODE_FORMAT_UNCOMPRESSED_10_BIT,
10,
},
};
const struct tpg_formats tpg_formats_gen1 = {
.nformats = ARRAY_SIZE(formats_gen1),
.formats = formats_gen1
};
const struct tpg_format_info *tpg_get_fmt_entry(const struct tpg_format_info *formats,
unsigned int nformats,
u32 code)
{
unsigned int i;
for (i = 0; i < nformats; i++)
if (code == formats[i].code)
return &formats[i];
return ERR_PTR(-EINVAL);
}
static int tpg_set_clock_rates(struct tpg_device *tpg)
{
struct device *dev = tpg->camss->dev;
int i, ret;
for (i = 0; i < tpg->nclocks; i++) {
struct camss_clock *clock = &tpg->clock[i];
long round_rate;
if (clock->freq) {
round_rate = clk_round_rate(clock->clk, clock->freq[0]);
if (round_rate < 0) {
dev_err(dev, "clk round rate failed: %ld\n",
round_rate);
return -EINVAL;
}
ret = clk_set_rate(clock->clk, round_rate);
if (ret < 0) {
dev_err(dev, "clk set rate failed: %d\n", ret);
return ret;
}
}
}
return 0;
}
static int tpg_set_power(struct v4l2_subdev *sd, int on)
{
struct tpg_device *tpg = v4l2_get_subdevdata(sd);
struct device *dev = tpg->camss->dev;
if (on) {
int ret;
ret = pm_runtime_resume_and_get(dev);
if (ret < 0)
return ret;
ret = tpg_set_clock_rates(tpg);
if (ret < 0) {
pm_runtime_put_sync(dev);
return ret;
}
ret = camss_enable_clocks(tpg->nclocks, tpg->clock, dev);
if (ret < 0) {
pm_runtime_put_sync(dev);
return ret;
}
tpg->res->hw_ops->reset(tpg);
tpg->res->hw_ops->hw_version(tpg);
} else {
camss_disable_clocks(tpg->nclocks, tpg->clock);
pm_runtime_put_sync(dev);
}
return 0;
}
static int tpg_set_stream(struct v4l2_subdev *sd, int enable)
{
struct tpg_device *tpg = v4l2_get_subdevdata(sd);
int ret;
if (enable) {
ret = v4l2_ctrl_handler_setup(&tpg->ctrls);
if (ret < 0) {
dev_err(tpg->camss->dev,
"could not sync v4l2 controls: %d\n", ret);
return ret;
}
}
return tpg->res->hw_ops->configure_stream(tpg, enable);
}
static struct v4l2_mbus_framefmt *
__tpg_get_format(struct tpg_device *tpg,
struct v4l2_subdev_state *sd_state,
unsigned int pad,
enum v4l2_subdev_format_whence which)
{
if (which == V4L2_SUBDEV_FORMAT_TRY)
return v4l2_subdev_state_get_format(sd_state,
pad);
return &tpg->fmt;
}
static void tpg_try_format(struct tpg_device *tpg,
struct v4l2_mbus_framefmt *fmt)
{
unsigned int i;
for (i = 0; i < tpg->res->formats->nformats; i++)
if (tpg->res->formats->formats[i].code == fmt->code)
break;
if (i >= tpg->res->formats->nformats)
fmt->code = MEDIA_BUS_FMT_SBGGR8_1X8;
fmt->width = clamp_t(u32, fmt->width, TPG_MIN_WIDTH, TPG_MAX_WIDTH);
fmt->height = clamp_t(u32, fmt->height, TPG_MIN_HEIGHT, TPG_MAX_HEIGHT);
fmt->field = V4L2_FIELD_NONE;
fmt->colorspace = V4L2_COLORSPACE_SRGB;
}
static int tpg_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
struct tpg_device *tpg = v4l2_get_subdevdata(sd);
if (code->index >= tpg->res->formats->nformats)
return -EINVAL;
code->code = tpg->res->formats->formats[code->index].code;
return 0;
}
static int tpg_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
struct tpg_device *tpg = v4l2_get_subdevdata(sd);
unsigned int i;
if (fse->index != 0)
return -EINVAL;
for (i = 0; i < tpg->res->formats->nformats; i++)
if (tpg->res->formats->formats[i].code == fse->code)
break;
if (i >= tpg->res->formats->nformats)
return -EINVAL;
fse->min_width = TPG_MIN_WIDTH;
fse->min_height = TPG_MIN_HEIGHT;
fse->max_width = TPG_MAX_WIDTH;
fse->max_height = TPG_MAX_HEIGHT;
return 0;
}
static int tpg_get_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct tpg_device *tpg = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *format;
format = __tpg_get_format(tpg, sd_state, fmt->pad, fmt->which);
if (!format)
return -EINVAL;
fmt->format = *format;
return 0;
}
static int tpg_set_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct tpg_device *tpg = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *format;
format = __tpg_get_format(tpg, sd_state, fmt->pad, fmt->which);
if (!format)
return -EINVAL;
tpg_try_format(tpg, &fmt->format);
*format = fmt->format;
return 0;
}
static int tpg_init_formats(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh)
{
struct v4l2_subdev_format format = {
.pad = MSM_TPG_PAD_SRC,
.which = fh ? V4L2_SUBDEV_FORMAT_TRY :
V4L2_SUBDEV_FORMAT_ACTIVE,
.format = {
.code = MEDIA_BUS_FMT_SBGGR8_1X8,
.width = 1920,
.height = 1080,
}
};
return tpg_set_format(sd, fh ? fh->state : NULL, &format);
}
static int tpg_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct tpg_device *tpg = container_of(ctrl->handler,
struct tpg_device, ctrls);
int ret = -EINVAL;
switch (ctrl->id) {
case V4L2_CID_TEST_PATTERN:
ret = tpg->res->hw_ops->configure_testgen_pattern(tpg, ctrl->val);
break;
}
return ret;
}
static const struct v4l2_ctrl_ops tpg_ctrl_ops = {
.s_ctrl = tpg_s_ctrl,
};
int msm_tpg_subdev_init(struct camss *camss,
struct tpg_device *tpg,
const struct camss_subdev_resources *res, u8 id)
{
struct platform_device *pdev;
struct device *dev;
int i, j;
dev = camss->dev;
pdev = to_platform_device(dev);
tpg->camss = camss;
tpg->id = id;
tpg->res = &res->tpg;
tpg->res->hw_ops->subdev_init(tpg);
tpg->base = devm_platform_ioremap_resource_byname(pdev, res->reg[0]);
if (IS_ERR(tpg->base))
return PTR_ERR(tpg->base);
tpg->nclocks = 0;
while (res->clock[tpg->nclocks])
tpg->nclocks++;
if (!tpg->nclocks)
return 0;
tpg->clock = devm_kcalloc(dev, tpg->nclocks,
sizeof(*tpg->clock), GFP_KERNEL);
if (!tpg->clock)
return -ENOMEM;
for (i = 0; i < tpg->nclocks; i++) {
struct camss_clock *clock = &tpg->clock[i];
clock->clk = devm_clk_get(dev, res->clock[i]);
if (IS_ERR(clock->clk))
return PTR_ERR(clock->clk);
clock->name = res->clock[i];
clock->nfreqs = 0;
while (res->clock_rate[i][clock->nfreqs])
clock->nfreqs++;
if (!clock->nfreqs) {
clock->freq = NULL;
continue;
}
clock->freq = devm_kcalloc(dev, clock->nfreqs,
sizeof(*clock->freq), GFP_KERNEL);
if (!clock->freq)
return -ENOMEM;
for (j = 0; j < clock->nfreqs; j++)
clock->freq[j] = res->clock_rate[i][j];
}
return 0;
}
static int tpg_link_setup(struct media_entity *entity,
const struct media_pad *local,
const struct media_pad *remote, u32 flags)
{
if (flags & MEDIA_LNK_FL_ENABLED)
if (media_pad_remote_pad_first(local))
return -EBUSY;
return 0;
}
static const struct v4l2_subdev_core_ops tpg_core_ops = {
.s_power = tpg_set_power,
};
static const struct v4l2_subdev_video_ops tpg_video_ops = {
.s_stream = tpg_set_stream,
};
static const struct v4l2_subdev_pad_ops tpg_pad_ops = {
.enum_mbus_code = tpg_enum_mbus_code,
.enum_frame_size = tpg_enum_frame_size,
.get_fmt = tpg_get_format,
.set_fmt = tpg_set_format,
};
static const struct v4l2_subdev_ops tpg_v4l2_ops = {
.core = &tpg_core_ops,
.video = &tpg_video_ops,
.pad = &tpg_pad_ops,
};
static const struct v4l2_subdev_internal_ops tpg_v4l2_internal_ops = {
.open = tpg_init_formats,
};
static const struct media_entity_operations tpg_media_ops = {
.link_setup = tpg_link_setup,
.link_validate = v4l2_subdev_link_validate,
};
int msm_tpg_register_entity(struct tpg_device *tpg,
struct v4l2_device *v4l2_dev)
{
struct v4l2_subdev *sd = &tpg->subdev;
struct device *dev = tpg->camss->dev;
int ret;
v4l2_subdev_init(sd, &tpg_v4l2_ops);
sd->internal_ops = &tpg_v4l2_internal_ops;
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
V4L2_SUBDEV_FL_HAS_EVENTS;
snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d",
"msm_tpg", tpg->id);
sd->grp_id = TPG_GRP_ID;
v4l2_set_subdevdata(sd, tpg);
ret = v4l2_ctrl_handler_init(&tpg->ctrls, 1);
if (ret < 0) {
dev_err(dev, "Failed to init ctrl handler: %d\n", ret);
return ret;
}
tpg->testgen_mode = v4l2_ctrl_new_std_menu_items(&tpg->ctrls,
&tpg_ctrl_ops, V4L2_CID_TEST_PATTERN,
tpg->testgen.nmodes, 0, 0,
tpg->testgen.modes);
if (tpg->ctrls.error) {
dev_err(dev, "Failed to init ctrl: %d\n", tpg->ctrls.error);
ret = tpg->ctrls.error;
goto free_ctrl;
}
tpg->subdev.ctrl_handler = &tpg->ctrls;
ret = tpg_init_formats(sd, NULL);
if (ret < 0) {
dev_err(dev, "Failed to init format: %d\n", ret);
goto free_ctrl;
}
tpg->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.ops = &tpg_media_ops;
ret = media_entity_pads_init(&sd->entity, 1, &tpg->pad);
if (ret < 0) {
dev_err(dev, "Failed to init media entity: %d\n", ret);
goto free_ctrl;
}
ret = v4l2_device_register_subdev(v4l2_dev, sd);
if (ret < 0) {
dev_err(dev, "Failed to register subdev: %d\n", ret);
media_entity_cleanup(&sd->entity);
goto free_ctrl;
}
return 0;
free_ctrl:
v4l2_ctrl_handler_free(&tpg->ctrls);
return ret;
}
void msm_tpg_unregister_entity(struct tpg_device *tpg)
{
v4l2_device_unregister_subdev(&tpg->subdev);
media_entity_cleanup(&tpg->subdev.entity);
v4l2_ctrl_handler_free(&tpg->ctrls);
}
