#include "stf-camss.h"
static const char * const stf_cap_names[] = {
"capture_raw",
"capture_yuv",
};
static const struct stfcamss_format_info stf_wr_fmts[] = {
{
.code = MEDIA_BUS_FMT_SRGGB10_1X10,
.pixelformat = V4L2_PIX_FMT_SRGGB10,
.planes = 1,
.vsub = { 1 },
.bpp = 16,
},
{
.code = MEDIA_BUS_FMT_SGRBG10_1X10,
.pixelformat = V4L2_PIX_FMT_SGRBG10,
.planes = 1,
.vsub = { 1 },
.bpp = 16,
},
{
.code = MEDIA_BUS_FMT_SGBRG10_1X10,
.pixelformat = V4L2_PIX_FMT_SGBRG10,
.planes = 1,
.vsub = { 1 },
.bpp = 16,
},
{
.code = MEDIA_BUS_FMT_SBGGR10_1X10,
.pixelformat = V4L2_PIX_FMT_SBGGR10,
.planes = 1,
.vsub = { 1 },
.bpp = 16,
},
};
static const struct stfcamss_format_info stf_isp_fmts[] = {
{
.code = MEDIA_BUS_FMT_YUYV8_1_5X8,
.pixelformat = V4L2_PIX_FMT_NV12,
.planes = 2,
.vsub = { 1, 2 },
.bpp = 8,
},
};
static inline struct stf_capture *to_stf_capture(struct stfcamss_video *video)
{
return container_of(video, struct stf_capture, video);
}
static void stf_set_raw_addr(struct stfcamss *stfcamss, dma_addr_t addr)
{
stf_syscon_reg_write(stfcamss, VIN_START_ADDR_O, (long)addr);
stf_syscon_reg_write(stfcamss, VIN_START_ADDR_N, (long)addr);
}
static void stf_set_yuv_addr(struct stfcamss *stfcamss,
dma_addr_t y_addr, dma_addr_t uv_addr)
{
stf_isp_reg_write(stfcamss, ISP_REG_Y_PLANE_START_ADDR, y_addr);
stf_isp_reg_write(stfcamss, ISP_REG_UV_PLANE_START_ADDR, uv_addr);
}
static void stf_init_addrs(struct stfcamss_video *video)
{
struct stf_capture *cap = to_stf_capture(video);
struct stf_v_buf *output = &cap->buffers;
dma_addr_t addr0, addr1;
output->active_buf = 0;
if (!output->buf[0])
return;
addr0 = output->buf[0]->addr[0];
addr1 = output->buf[0]->addr[1];
if (cap->type == STF_CAPTURE_RAW)
stf_set_raw_addr(video->stfcamss, addr0);
else if (cap->type == STF_CAPTURE_YUV)
stf_set_yuv_addr(video->stfcamss, addr0, addr1);
}
static struct stfcamss_buffer *stf_buf_get_pending(struct stf_v_buf *output)
{
struct stfcamss_buffer *buffer = NULL;
if (!list_empty(&output->pending_bufs)) {
buffer = list_first_entry(&output->pending_bufs,
struct stfcamss_buffer,
queue);
list_del(&buffer->queue);
}
return buffer;
}
static void stf_cap_s_cfg(struct stfcamss_video *video)
{
struct stf_capture *cap = to_stf_capture(video);
struct stf_v_buf *output = &cap->buffers;
unsigned long flags;
spin_lock_irqsave(&output->lock, flags);
output->state = STF_OUTPUT_IDLE;
output->buf[0] = stf_buf_get_pending(output);
if (!output->buf[0] && output->buf[1]) {
output->buf[0] = output->buf[1];
output->buf[1] = NULL;
}
if (output->buf[0])
output->state = STF_OUTPUT_SINGLE;
output->sequence = 0;
stf_init_addrs(video);
spin_unlock_irqrestore(&output->lock, flags);
}
static int stf_cap_s_cleanup(struct stfcamss_video *video)
{
struct stf_capture *cap = to_stf_capture(video);
struct stf_v_buf *output = &cap->buffers;
unsigned long flags;
spin_lock_irqsave(&output->lock, flags);
output->state = STF_OUTPUT_OFF;
spin_unlock_irqrestore(&output->lock, flags);
return 0;
}
static void stf_wr_data_en(struct stfcamss_video *video)
{
struct stf_capture *cap = to_stf_capture(video);
struct stfcamss *stfcamss = cap->video.stfcamss;
stf_syscon_reg_set_bit(stfcamss, VIN_CHANNEL_SEL_EN, U0_VIN_AXIWR0_EN);
}
static void stf_wr_irq_enable(struct stfcamss_video *video)
{
struct stf_capture *cap = to_stf_capture(video);
struct stfcamss *stfcamss = cap->video.stfcamss;
stf_syscon_reg_clear_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_M);
}
static void stf_wr_irq_disable(struct stfcamss_video *video)
{
struct stf_capture *cap = to_stf_capture(video);
struct stfcamss *stfcamss = cap->video.stfcamss;
stf_syscon_reg_set_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_CLEAN);
stf_syscon_reg_clear_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_CLEAN);
stf_syscon_reg_set_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_M);
}
static void stf_channel_set(struct stfcamss_video *video)
{
struct stf_capture *cap = to_stf_capture(video);
struct stfcamss *stfcamss = cap->video.stfcamss;
u32 val;
if (cap->type == STF_CAPTURE_RAW) {
const struct v4l2_pix_format *pix = &video->active_fmt.fmt.pix;
val = stf_syscon_reg_read(stfcamss, VIN_CHANNEL_SEL_EN);
val &= ~U0_VIN_CHANNEL_SEL_MASK;
val |= CHANNEL(0);
stf_syscon_reg_write(stfcamss, VIN_CHANNEL_SEL_EN, val);
val = stf_syscon_reg_read(stfcamss, VIN_INRT_PIX_CFG);
val &= ~U0_VIN_PIX_CT_MASK;
val |= PIX_CT(1);
val &= ~U0_VIN_PIXEL_HEIGH_BIT_SEL_MAKS;
val |= PIXEL_HEIGH_BIT_SEL(0);
val &= ~U0_VIN_PIX_CNT_END_MASK;
val |= PIX_CNT_END(pix->width / 4 - 1);
stf_syscon_reg_write(stfcamss, VIN_INRT_PIX_CFG, val);
} else if (cap->type == STF_CAPTURE_YUV) {
val = stf_syscon_reg_read(stfcamss, VIN_CFG_REG);
val &= ~U0_VIN_MIPI_BYTE_EN_ISP0_MASK;
val |= U0_VIN_MIPI_BYTE_EN_ISP0(0);
val &= ~U0_VIN_MIPI_CHANNEL_SEL0_MASK;
val |= U0_VIN_MIPI_CHANNEL_SEL0(0);
val &= ~U0_VIN_PIX_NUM_MASK;
val |= U0_VIN_PIX_NUM(0);
val &= ~U0_VIN_P_I_MIPI_HAEDER_EN0_MASK;
val |= U0_VIN_P_I_MIPI_HAEDER_EN0(1);
stf_syscon_reg_write(stfcamss, VIN_CFG_REG, val);
}
}
static void stf_capture_start(struct stfcamss_video *video)
{
struct stf_capture *cap = to_stf_capture(video);
stf_channel_set(video);
if (cap->type == STF_CAPTURE_RAW) {
stf_wr_irq_enable(video);
stf_wr_data_en(video);
}
stf_cap_s_cfg(video);
}
static void stf_capture_stop(struct stfcamss_video *video)
{
struct stf_capture *cap = to_stf_capture(video);
if (cap->type == STF_CAPTURE_RAW)
stf_wr_irq_disable(video);
stf_cap_s_cleanup(video);
}
static void stf_capture_init(struct stfcamss *stfcamss, struct stf_capture *cap)
{
cap->buffers.state = STF_OUTPUT_OFF;
cap->buffers.buf[0] = NULL;
cap->buffers.buf[1] = NULL;
cap->buffers.active_buf = 0;
atomic_set(&cap->buffers.frame_skip, 4);
INIT_LIST_HEAD(&cap->buffers.pending_bufs);
INIT_LIST_HEAD(&cap->buffers.ready_bufs);
spin_lock_init(&cap->buffers.lock);
cap->video.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
cap->video.stfcamss = stfcamss;
cap->video.bpl_alignment = 16 * 8;
if (cap->type == STF_CAPTURE_RAW) {
cap->video.formats = stf_wr_fmts;
cap->video.nformats = ARRAY_SIZE(stf_wr_fmts);
cap->video.bpl_alignment = 8;
} else if (cap->type == STF_CAPTURE_YUV) {
cap->video.formats = stf_isp_fmts;
cap->video.nformats = ARRAY_SIZE(stf_isp_fmts);
cap->video.bpl_alignment = 1;
}
}
static void stf_buf_add_ready(struct stf_v_buf *output,
struct stfcamss_buffer *buffer)
{
INIT_LIST_HEAD(&buffer->queue);
list_add_tail(&buffer->queue, &output->ready_bufs);
}
static struct stfcamss_buffer *stf_buf_get_ready(struct stf_v_buf *output)
{
struct stfcamss_buffer *buffer = NULL;
if (!list_empty(&output->ready_bufs)) {
buffer = list_first_entry(&output->ready_bufs,
struct stfcamss_buffer,
queue);
list_del(&buffer->queue);
}
return buffer;
}
static void stf_buf_add_pending(struct stf_v_buf *output,
struct stfcamss_buffer *buffer)
{
INIT_LIST_HEAD(&buffer->queue);
list_add_tail(&buffer->queue, &output->pending_bufs);
}
static void stf_buf_update_on_last(struct stf_v_buf *output)
{
switch (output->state) {
case STF_OUTPUT_CONTINUOUS:
output->state = STF_OUTPUT_SINGLE;
output->active_buf = !output->active_buf;
break;
case STF_OUTPUT_SINGLE:
output->state = STF_OUTPUT_STOPPING;
break;
default:
break;
}
}
static void stf_buf_update_on_next(struct stf_v_buf *output)
{
switch (output->state) {
case STF_OUTPUT_CONTINUOUS:
output->active_buf = !output->active_buf;
break;
case STF_OUTPUT_SINGLE:
default:
break;
}
}
static void stf_buf_update_on_new(struct stfcamss_video *video,
struct stfcamss_buffer *new_buf)
{
struct stf_capture *cap = to_stf_capture(video);
struct stf_v_buf *output = &cap->buffers;
switch (output->state) {
case STF_OUTPUT_SINGLE:
stf_buf_add_pending(output, new_buf);
break;
case STF_OUTPUT_IDLE:
if (!output->buf[0]) {
output->buf[0] = new_buf;
stf_init_addrs(video);
output->state = STF_OUTPUT_SINGLE;
} else {
stf_buf_add_pending(output, new_buf);
}
break;
case STF_OUTPUT_STOPPING:
if (output->last_buffer) {
output->buf[output->active_buf] = output->last_buffer;
output->last_buffer = NULL;
}
output->state = STF_OUTPUT_SINGLE;
stf_buf_add_pending(output, new_buf);
break;
case STF_OUTPUT_CONTINUOUS:
default:
stf_buf_add_pending(output, new_buf);
break;
}
}
static void stf_buf_flush(struct stf_v_buf *output, enum vb2_buffer_state state)
{
struct stfcamss_buffer *buf;
struct stfcamss_buffer *t;
list_for_each_entry_safe(buf, t, &output->pending_bufs, queue) {
vb2_buffer_done(&buf->vb.vb2_buf, state);
list_del(&buf->queue);
}
list_for_each_entry_safe(buf, t, &output->ready_bufs, queue) {
vb2_buffer_done(&buf->vb.vb2_buf, state);
list_del(&buf->queue);
}
}
static void stf_buf_done(struct stf_v_buf *output)
{
struct stfcamss_buffer *ready_buf;
u64 ts = ktime_get_ns();
unsigned long flags;
if (output->state == STF_OUTPUT_OFF ||
output->state == STF_OUTPUT_RESERVED)
return;
spin_lock_irqsave(&output->lock, flags);
while ((ready_buf = stf_buf_get_ready(output))) {
ready_buf->vb.vb2_buf.timestamp = ts;
ready_buf->vb.sequence = output->sequence++;
vb2_buffer_done(&ready_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
}
spin_unlock_irqrestore(&output->lock, flags);
}
static void stf_change_buffer(struct stf_v_buf *output)
{
struct stf_capture *cap = container_of(output, struct stf_capture,
buffers);
struct stfcamss *stfcamss = cap->video.stfcamss;
struct stfcamss_buffer *ready_buf;
dma_addr_t *new_addr;
unsigned long flags;
u32 active_index;
if (output->state == STF_OUTPUT_OFF ||
output->state == STF_OUTPUT_STOPPING ||
output->state == STF_OUTPUT_RESERVED ||
output->state == STF_OUTPUT_IDLE)
return;
spin_lock_irqsave(&output->lock, flags);
active_index = output->active_buf;
ready_buf = output->buf[active_index];
if (!ready_buf) {
dev_dbg(stfcamss->dev, "missing ready buf %d %d.\n",
active_index, output->state);
active_index = !active_index;
ready_buf = output->buf[active_index];
if (!ready_buf) {
dev_dbg(stfcamss->dev,
"missing ready buf2 %d %d.\n",
active_index, output->state);
goto out_unlock;
}
}
output->buf[active_index] = stf_buf_get_pending(output);
if (!output->buf[active_index]) {
new_addr = ready_buf->addr;
stf_buf_update_on_last(output);
} else {
new_addr = output->buf[active_index]->addr;
stf_buf_update_on_next(output);
}
if (output->state == STF_OUTPUT_STOPPING) {
output->last_buffer = ready_buf;
} else {
if (cap->type == STF_CAPTURE_RAW)
stf_set_raw_addr(stfcamss, new_addr[0]);
else if (cap->type == STF_CAPTURE_YUV)
stf_set_yuv_addr(stfcamss, new_addr[0], new_addr[1]);
stf_buf_add_ready(output, ready_buf);
}
out_unlock:
spin_unlock_irqrestore(&output->lock, flags);
}
irqreturn_t stf_wr_irq_handler(int irq, void *priv)
{
struct stfcamss *stfcamss = priv;
struct stf_capture *cap = &stfcamss->captures[STF_CAPTURE_RAW];
if (atomic_dec_if_positive(&cap->buffers.frame_skip) < 0) {
stf_change_buffer(&cap->buffers);
stf_buf_done(&cap->buffers);
}
stf_syscon_reg_set_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_CLEAN);
stf_syscon_reg_clear_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_CLEAN);
return IRQ_HANDLED;
}
irqreturn_t stf_isp_irq_handler(int irq, void *priv)
{
struct stfcamss *stfcamss = priv;
struct stf_capture *cap = &stfcamss->captures[STF_CAPTURE_YUV];
u32 status;
status = stf_isp_reg_read(stfcamss, ISP_REG_ISP_CTRL_0);
if (status & ISPC_ISP) {
if (status & ISPC_ENUO)
stf_buf_done(&cap->buffers);
stf_isp_reg_write(stfcamss, ISP_REG_ISP_CTRL_0,
(status & ~ISPC_INT_ALL_MASK) |
ISPC_ISP | ISPC_CSI | ISPC_SC);
}
return IRQ_HANDLED;
}
irqreturn_t stf_line_irq_handler(int irq, void *priv)
{
struct stfcamss *stfcamss = priv;
struct stf_capture *cap = &stfcamss->captures[STF_CAPTURE_YUV];
u32 status;
status = stf_isp_reg_read(stfcamss, ISP_REG_ISP_CTRL_0);
if (status & ISPC_LINE) {
if (atomic_dec_if_positive(&cap->buffers.frame_skip) < 0) {
if ((status & ISPC_ENUO))
stf_change_buffer(&cap->buffers);
}
stf_isp_reg_set_bit(stfcamss, ISP_REG_CSIINTS,
CSI_INTS_MASK, CSI_INTS(0x3));
stf_isp_reg_set_bit(stfcamss, ISP_REG_IESHD,
SHAD_UP_M | SHAD_UP_EN, 0x3);
stf_isp_reg_write(stfcamss, ISP_REG_ISP_CTRL_0,
(status & ~ISPC_INT_ALL_MASK) | ISPC_LINE);
}
return IRQ_HANDLED;
}
static int stf_queue_buffer(struct stfcamss_video *video,
struct stfcamss_buffer *buf)
{
struct stf_capture *cap = to_stf_capture(video);
struct stf_v_buf *v_bufs = &cap->buffers;
unsigned long flags;
spin_lock_irqsave(&v_bufs->lock, flags);
stf_buf_update_on_new(video, buf);
spin_unlock_irqrestore(&v_bufs->lock, flags);
return 0;
}
static int stf_flush_buffers(struct stfcamss_video *video,
enum vb2_buffer_state state)
{
struct stf_capture *cap = to_stf_capture(video);
struct stf_v_buf *v_bufs = &cap->buffers;
unsigned long flags;
unsigned int i;
spin_lock_irqsave(&v_bufs->lock, flags);
stf_buf_flush(v_bufs, state);
for (i = 0; i < ARRAY_SIZE(v_bufs->buf); i++) {
if (v_bufs->buf[i])
vb2_buffer_done(&v_bufs->buf[i]->vb.vb2_buf, state);
v_bufs->buf[i] = NULL;
}
if (v_bufs->last_buffer) {
vb2_buffer_done(&v_bufs->last_buffer->vb.vb2_buf, state);
v_bufs->last_buffer = NULL;
}
spin_unlock_irqrestore(&v_bufs->lock, flags);
return 0;
}
static const struct stfcamss_video_ops stf_capture_ops = {
.queue_buffer = stf_queue_buffer,
.flush_buffers = stf_flush_buffers,
.start_streaming = stf_capture_start,
.stop_streaming = stf_capture_stop,
};
static void stf_capture_unregister_one(struct stf_capture *cap)
{
if (!video_is_registered(&cap->video.vdev))
return;
media_entity_cleanup(&cap->video.vdev.entity);
vb2_video_unregister_device(&cap->video.vdev);
}
void stf_capture_unregister(struct stfcamss *stfcamss)
{
struct stf_capture *cap_raw = &stfcamss->captures[STF_CAPTURE_RAW];
struct stf_capture *cap_yuv = &stfcamss->captures[STF_CAPTURE_YUV];
stf_capture_unregister_one(cap_raw);
stf_capture_unregister_one(cap_yuv);
}
int stf_capture_register(struct stfcamss *stfcamss,
struct v4l2_device *v4l2_dev)
{
unsigned int i;
int ret;
for (i = 0; i < ARRAY_SIZE(stfcamss->captures); i++) {
struct stf_capture *capture = &stfcamss->captures[i];
capture->type = i;
capture->video.ops = &stf_capture_ops;
stf_capture_init(stfcamss, capture);
ret = stf_video_register(&capture->video, v4l2_dev,
stf_cap_names[i]);
if (ret < 0) {
dev_err(stfcamss->dev,
"Failed to register video node: %d\n", ret);
stf_capture_unregister(stfcamss);
return ret;
}
}
return 0;
}
