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authorSylwester Nawrocki <s.nawrocki@samsung.com>2013-12-20 19:35:06 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2014-03-14 10:37:12 -0300
commit34947b8aebe3f2d4eceb65fceafa92bf8dc97d96 (patch)
treedf4846111c30f6dea67c284057daad23aef446d5
parentfa91f1056f17c87bc0fa601f80d1b1a4487fd701 (diff)
[media] exynos4-is: Add the FIMC-IS ISP capture DMA driver
Add a video capture node for the FIMC-IS ISP IP block. The Exynos4x12 FIMC-IS ISP IP block has 2 DMA interfaces that allow to capture raw Bayer and YUV data to memory. Currently only the DMA2 output is and raw Bayer data capture is supported. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
-rw-r--r--drivers/media/platform/exynos4-is/Kconfig9
-rw-r--r--drivers/media/platform/exynos4-is/Makefile4
-rw-r--r--drivers/media/platform/exynos4-is/fimc-is-param.c2
-rw-r--r--drivers/media/platform/exynos4-is/fimc-is-param.h5
-rw-r--r--drivers/media/platform/exynos4-is/fimc-is-regs.c14
-rw-r--r--drivers/media/platform/exynos4-is/fimc-is-regs.h1
-rw-r--r--drivers/media/platform/exynos4-is/fimc-is.c3
-rw-r--r--drivers/media/platform/exynos4-is/fimc-is.h5
-rw-r--r--drivers/media/platform/exynos4-is/fimc-isp-video.c660
-rw-r--r--drivers/media/platform/exynos4-is/fimc-isp-video.h44
-rw-r--r--drivers/media/platform/exynos4-is/fimc-isp.c29
-rw-r--r--drivers/media/platform/exynos4-is/fimc-isp.h27
-rw-r--r--drivers/media/platform/exynos4-is/media-dev.c23
13 files changed, 817 insertions, 9 deletions
diff --git a/drivers/media/platform/exynos4-is/Kconfig b/drivers/media/platform/exynos4-is/Kconfig
index 01ed1ecdff7e..e1b2ceba00c1 100644
--- a/drivers/media/platform/exynos4-is/Kconfig
+++ b/drivers/media/platform/exynos4-is/Kconfig
@@ -64,4 +64,13 @@ config VIDEO_EXYNOS4_FIMC_IS
To compile this driver as a module, choose M here: the
module will be called exynos4-fimc-is.
+config VIDEO_EXYNOS4_ISP_DMA_CAPTURE
+ bool "EXYNOS4x12 FIMC-IS ISP Direct DMA capture support"
+ depends on VIDEO_EXYNOS4_FIMC_IS
+ select VIDEO_EXYNOS4_IS_COMMON
+ default y
+ help
+ This option enables an additional video device node exposing a V4L2
+ video capture interface for the FIMC-IS ISP raw (Bayer) capture DMA.
+
endif # VIDEO_SAMSUNG_EXYNOS4_IS
diff --git a/drivers/media/platform/exynos4-is/Makefile b/drivers/media/platform/exynos4-is/Makefile
index c2ff29ba6856..eed1b185d813 100644
--- a/drivers/media/platform/exynos4-is/Makefile
+++ b/drivers/media/platform/exynos4-is/Makefile
@@ -6,6 +6,10 @@ exynos4-is-common-objs := common.o
exynos-fimc-is-objs := fimc-is.o fimc-isp.o fimc-is-sensor.o fimc-is-regs.o
exynos-fimc-is-objs += fimc-is-param.o fimc-is-errno.o fimc-is-i2c.o
+ifeq ($(CONFIG_VIDEO_EXYNOS4_ISP_DMA_CAPTURE),y)
+exynos-fimc-is-objs += fimc-isp-video.o
+endif
+
obj-$(CONFIG_VIDEO_S5P_MIPI_CSIS) += s5p-csis.o
obj-$(CONFIG_VIDEO_EXYNOS_FIMC_LITE) += exynos-fimc-lite.o
obj-$(CONFIG_VIDEO_EXYNOS4_FIMC_IS) += exynos-fimc-is.o
diff --git a/drivers/media/platform/exynos4-is/fimc-is-param.c b/drivers/media/platform/exynos4-is/fimc-is-param.c
index 9bf3ddd9e028..bf1465d1bf6d 100644
--- a/drivers/media/platform/exynos4-is/fimc-is-param.c
+++ b/drivers/media/platform/exynos4-is/fimc-is-param.c
@@ -56,7 +56,7 @@ static void __fimc_is_hw_update_param_sensor_framerate(struct fimc_is *is)
__hw_param_copy(dst, src);
}
-static int __fimc_is_hw_update_param(struct fimc_is *is, u32 offset)
+int __fimc_is_hw_update_param(struct fimc_is *is, u32 offset)
{
struct is_param_region *par = &is->is_p_region->parameter;
struct chain_config *cfg = &is->config[is->config_index];
diff --git a/drivers/media/platform/exynos4-is/fimc-is-param.h b/drivers/media/platform/exynos4-is/fimc-is-param.h
index f9358c27ae2d..8e31f7642776 100644
--- a/drivers/media/platform/exynos4-is/fimc-is-param.h
+++ b/drivers/media/platform/exynos4-is/fimc-is-param.h
@@ -911,6 +911,10 @@ struct is_region {
u32 shared[MAX_SHARED_COUNT];
} __packed;
+/* Offset to the ISP DMA2 output buffer address array. */
+#define DMA2_OUTPUT_ADDR_ARRAY_OFFS \
+ (offsetof(struct is_region, shared) + 32 * sizeof(u32))
+
struct is_debug_frame_descriptor {
u32 sensor_frame_time;
u32 sensor_exposure_time;
@@ -988,6 +992,7 @@ struct sensor_open_extended {
struct fimc_is;
int fimc_is_hw_get_sensor_max_framerate(struct fimc_is *is);
+int __fimc_is_hw_update_param(struct fimc_is *is, u32 offset);
void fimc_is_set_initial_params(struct fimc_is *is);
unsigned int __get_pending_param_count(struct fimc_is *is);
diff --git a/drivers/media/platform/exynos4-is/fimc-is-regs.c b/drivers/media/platform/exynos4-is/fimc-is-regs.c
index 5c7bd2ac40d2..cfe4406a83ff 100644
--- a/drivers/media/platform/exynos4-is/fimc-is-regs.c
+++ b/drivers/media/platform/exynos4-is/fimc-is-regs.c
@@ -105,6 +105,20 @@ int fimc_is_hw_get_params(struct fimc_is *is, unsigned int num_args)
return 0;
}
+void fimc_is_hw_set_isp_buf_mask(struct fimc_is *is, unsigned int mask)
+{
+ if (hweight32(mask) == 1) {
+ dev_err(&is->pdev->dev, "%s(): not enough buffers (mask %#x)\n",
+ __func__, mask);
+ return;
+ }
+
+ if (mcuctl_read(is, MCUCTL_REG_ISSR(23)) != 0)
+ dev_dbg(&is->pdev->dev, "non-zero DMA buffer mask\n");
+
+ mcuctl_write(mask, is, MCUCTL_REG_ISSR(23));
+}
+
void fimc_is_hw_set_sensor_num(struct fimc_is *is)
{
pr_debug("setting sensor index to: %d\n", is->sensor_index);
diff --git a/drivers/media/platform/exynos4-is/fimc-is-regs.h b/drivers/media/platform/exynos4-is/fimc-is-regs.h
index 1d9d4ffc6ad5..141e5ddadbeb 100644
--- a/drivers/media/platform/exynos4-is/fimc-is-regs.h
+++ b/drivers/media/platform/exynos4-is/fimc-is-regs.h
@@ -147,6 +147,7 @@ int fimc_is_hw_get_params(struct fimc_is *is, unsigned int num);
void fimc_is_hw_set_intgr0_gd0(struct fimc_is *is);
int fimc_is_hw_wait_intmsr0_intmsd0(struct fimc_is *is);
void fimc_is_hw_set_sensor_num(struct fimc_is *is);
+void fimc_is_hw_set_isp_buf_mask(struct fimc_is *is, unsigned int mask);
void fimc_is_hw_stream_on(struct fimc_is *is);
void fimc_is_hw_stream_off(struct fimc_is *is);
int fimc_is_hw_set_param(struct fimc_is *is);
diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c
index a8f58451e261..c289d5a69d09 100644
--- a/drivers/media/platform/exynos4-is/fimc-is.c
+++ b/drivers/media/platform/exynos4-is/fimc-is.c
@@ -204,6 +204,9 @@ static int fimc_is_register_subdevs(struct fimc_is *is)
if (ret < 0)
return ret;
+ /* Initialize memory allocator context for the ISP DMA. */
+ is->isp.alloc_ctx = is->alloc_ctx;
+
for_each_compatible_node(i2c_bus, NULL, FIMC_IS_I2C_COMPATIBLE) {
for_each_available_child_of_node(i2c_bus, child) {
ret = fimc_is_parse_sensor_config(is, index, child);
diff --git a/drivers/media/platform/exynos4-is/fimc-is.h b/drivers/media/platform/exynos4-is/fimc-is.h
index 01f802f90003..e0be691af2d3 100644
--- a/drivers/media/platform/exynos4-is/fimc-is.h
+++ b/drivers/media/platform/exynos4-is/fimc-is.h
@@ -292,6 +292,11 @@ static inline struct fimc_is *fimc_isp_to_is(struct fimc_isp *isp)
return container_of(isp, struct fimc_is, isp);
}
+static inline struct chain_config *__get_curr_is_config(struct fimc_is *is)
+{
+ return &is->config[is->config_index];
+}
+
static inline void fimc_is_mem_barrier(void)
{
mb();
diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c b/drivers/media/platform/exynos4-is/fimc-isp-video.c
new file mode 100644
index 000000000000..e92b4e115adb
--- /dev/null
+++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c
@@ -0,0 +1,660 @@
+/*
+ * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
+ *
+ * FIMC-IS ISP video input and video output DMA interface driver
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
+ *
+ * The hardware handling code derived from a driver written by
+ * Younghwan Joo <yhwan.joo@samsung.com>.
+ *
+ * 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.
+ */
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/printk.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/s5p_fimc.h>
+
+#include "common.h"
+#include "media-dev.h"
+#include "fimc-is.h"
+#include "fimc-isp-video.h"
+#include "fimc-is-param.h"
+
+static int isp_video_capture_queue_setup(struct vb2_queue *vq,
+ const struct v4l2_format *pfmt,
+ unsigned int *num_buffers, unsigned int *num_planes,
+ unsigned int sizes[], void *allocators[])
+{
+ struct fimc_isp *isp = vb2_get_drv_priv(vq);
+ struct v4l2_pix_format_mplane *vid_fmt = &isp->video_capture.pixfmt;
+ const struct v4l2_pix_format_mplane *pixm = NULL;
+ const struct fimc_fmt *fmt;
+ unsigned int wh, i;
+
+ if (pfmt) {
+ pixm = &pfmt->fmt.pix_mp;
+ fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, -1);
+ wh = pixm->width * pixm->height;
+ } else {
+ fmt = isp->video_capture.format;
+ wh = vid_fmt->width * vid_fmt->height;
+ }
+
+ if (fmt == NULL)
+ return -EINVAL;
+
+ *num_buffers = clamp_t(u32, *num_buffers, FIMC_ISP_REQ_BUFS_MIN,
+ FIMC_ISP_REQ_BUFS_MAX);
+ *num_planes = fmt->memplanes;
+
+ for (i = 0; i < fmt->memplanes; i++) {
+ unsigned int size = (wh * fmt->depth[i]) / 8;
+ if (pixm)
+ sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
+ else
+ sizes[i] = size;
+ allocators[i] = isp->alloc_ctx;
+ }
+
+ return 0;
+}
+
+static inline struct param_dma_output *__get_isp_dma2(struct fimc_is *is)
+{
+ return &__get_curr_is_config(is)->isp.dma2_output;
+}
+
+static int isp_video_capture_start_streaming(struct vb2_queue *q,
+ unsigned int count)
+{
+ struct fimc_isp *isp = vb2_get_drv_priv(q);
+ struct fimc_is *is = fimc_isp_to_is(isp);
+ struct param_dma_output *dma = __get_isp_dma2(is);
+ struct fimc_is_video *video = &isp->video_capture;
+ int ret;
+
+ if (!test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state) ||
+ test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state))
+ return 0;
+
+
+ dma->cmd = DMA_OUTPUT_COMMAND_ENABLE;
+ dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_ENABLE;
+ dma->buffer_address = is->is_dma_p_region +
+ DMA2_OUTPUT_ADDR_ARRAY_OFFS;
+ dma->buffer_number = video->reqbufs_count;
+ dma->dma_out_mask = video->buf_mask;
+
+ isp_dbg(2, &video->ve.vdev,
+ "buf_count: %d, planes: %d, dma addr table: %#x\n",
+ video->buf_count, video->format->memplanes,
+ dma->buffer_address);
+
+ fimc_is_mem_barrier();
+
+ fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT);
+ __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT);
+
+ ret = fimc_is_itf_s_param(is, false);
+ if (ret < 0)
+ return ret;
+
+ ret = fimc_pipeline_call(&video->ve, set_stream, 1);
+ if (ret < 0)
+ return ret;
+
+ set_bit(ST_ISP_VID_CAP_STREAMING, &isp->state);
+ return ret;
+}
+
+static int isp_video_capture_stop_streaming(struct vb2_queue *q)
+{
+ struct fimc_isp *isp = vb2_get_drv_priv(q);
+ struct fimc_is *is = fimc_isp_to_is(isp);
+ struct param_dma_output *dma = __get_isp_dma2(is);
+ int ret;
+
+ ret = fimc_pipeline_call(&isp->video_capture.ve, set_stream, 0);
+ if (ret < 0)
+ return ret;
+
+ dma->cmd = DMA_OUTPUT_COMMAND_DISABLE;
+ dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_DISABLE;
+ dma->buffer_number = 0;
+ dma->buffer_address = 0;
+ dma->dma_out_mask = 0;
+
+ fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT);
+ __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT);
+
+ ret = fimc_is_itf_s_param(is, false);
+ if (ret < 0)
+ dev_warn(&is->pdev->dev, "%s: DMA stop failed\n", __func__);
+
+ fimc_is_hw_set_isp_buf_mask(is, 0);
+
+ clear_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state);
+ clear_bit(ST_ISP_VID_CAP_STREAMING, &isp->state);
+
+ isp->video_capture.buf_count = 0;
+ return 0;
+}
+
+static int isp_video_capture_buffer_prepare(struct vb2_buffer *vb)
+{
+ struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue);
+ struct fimc_is_video *video = &isp->video_capture;
+ int i;
+
+ if (video->format == NULL)
+ return -EINVAL;
+
+ for (i = 0; i < video->format->memplanes; i++) {
+ unsigned long size = video->pixfmt.plane_fmt[i].sizeimage;
+
+ if (vb2_plane_size(vb, i) < size) {
+ v4l2_err(&video->ve.vdev,
+ "User buffer too small (%ld < %ld)\n",
+ vb2_plane_size(vb, i), size);
+ return -EINVAL;
+ }
+ vb2_set_plane_payload(vb, i, size);
+ }
+
+ /* Check if we get one of the already known buffers. */
+ if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) {
+ dma_addr_t dma_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
+ int i;
+
+ for (i = 0; i < video->buf_count; i++)
+ if (video->buffers[i]->dma_addr[0] == dma_addr)
+ return 0;
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static void isp_video_capture_buffer_queue(struct vb2_buffer *vb)
+{
+ struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue);
+ struct fimc_is_video *video = &isp->video_capture;
+ struct fimc_is *is = fimc_isp_to_is(isp);
+ struct isp_video_buf *ivb = to_isp_video_buf(vb);
+ unsigned long flags;
+ unsigned int i;
+
+ if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) {
+ spin_lock_irqsave(&is->slock, flags);
+ video->buf_mask |= BIT(ivb->index);
+ spin_unlock_irqrestore(&is->slock, flags);
+ } else {
+ unsigned int num_planes = video->format->memplanes;
+
+ ivb->index = video->buf_count;
+ video->buffers[ivb->index] = ivb;
+
+ for (i = 0; i < num_planes; i++) {
+ int buf_index = ivb->index * num_planes + i;
+
+ ivb->dma_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
+ is->is_p_region->shared[32 + buf_index] =
+ ivb->dma_addr[i];
+
+ isp_dbg(2, &video->ve.vdev,
+ "dma_buf %d (%d/%d/%d) addr: %#x\n",
+ buf_index, ivb->index, i, vb->v4l2_buf.index,
+ ivb->dma_addr[i]);
+ }
+
+ if (++video->buf_count < video->reqbufs_count)
+ return;
+
+ video->buf_mask = (1UL << video->buf_count) - 1;
+ set_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state);
+ }
+
+ if (!test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state))
+ isp_video_capture_start_streaming(vb->vb2_queue, 0);
+}
+
+/*
+ * FIMC-IS ISP input and output DMA interface interrupt handler.
+ * Locking: called with is->slock spinlock held.
+ */
+void fimc_isp_video_irq_handler(struct fimc_is *is)
+{
+ struct fimc_is_video *video = &is->isp.video_capture;
+ struct vb2_buffer *vb;
+ int buf_index;
+
+ /* TODO: Ensure the DMA is really stopped in stop_streaming callback */
+ if (!test_bit(ST_ISP_VID_CAP_STREAMING, &is->isp.state))
+ return;
+
+ buf_index = (is->i2h_cmd.args[1] - 1) % video->buf_count;
+ vb = &video->buffers[buf_index]->vb;
+
+ v4l2_get_timestamp(&vb->v4l2_buf.timestamp);
+ vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
+
+ video->buf_mask &= ~BIT(buf_index);
+ fimc_is_hw_set_isp_buf_mask(is, video->buf_mask);
+}
+
+static const struct vb2_ops isp_video_capture_qops = {
+ .queue_setup = isp_video_capture_queue_setup,
+ .buf_prepare = isp_video_capture_buffer_prepare,
+ .buf_queue = isp_video_capture_buffer_queue,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .start_streaming = isp_video_capture_start_streaming,
+ .stop_streaming = isp_video_capture_stop_streaming,
+};
+
+static int isp_video_open(struct file *file)
+{
+ struct fimc_isp *isp = video_drvdata(file);
+ struct exynos_video_entity *ve = &isp->video_capture.ve;
+ struct media_entity *me = &ve->vdev.entity;
+ int ret;
+
+ if (mutex_lock_interruptible(&isp->video_lock))
+ return -ERESTARTSYS;
+
+ ret = v4l2_fh_open(file);
+ if (ret < 0)
+ goto unlock;
+
+ ret = pm_runtime_get_sync(&isp->pdev->dev);
+ if (ret < 0)
+ goto rel_fh;
+
+ if (v4l2_fh_is_singular_file(file)) {
+ mutex_lock(&me->parent->graph_mutex);
+
+ ret = fimc_pipeline_call(ve, open, me, true);
+
+ /* Mark the video pipeline as in use. */
+ if (ret == 0)
+ me->use_count++;
+
+ mutex_unlock(&me->parent->graph_mutex);
+ }
+ if (!ret)
+ goto unlock;
+rel_fh:
+ v4l2_fh_release(file);
+unlock:
+ mutex_unlock(&isp->video_lock);
+ return ret;
+}
+
+static int isp_video_release(struct file *file)
+{
+ struct fimc_isp *isp = video_drvdata(file);
+ struct fimc_is_video *ivc = &isp->video_capture;
+ struct media_entity *entity = &ivc->ve.vdev.entity;
+ struct media_device *mdev = entity->parent;
+ int ret = 0;
+
+ mutex_lock(&isp->video_lock);
+
+ if (v4l2_fh_is_singular_file(file) && ivc->streaming) {
+ media_entity_pipeline_stop(entity);
+ ivc->streaming = 0;
+ }
+
+ vb2_fop_release(file);
+
+ if (v4l2_fh_is_singular_file(file)) {
+ fimc_pipeline_call(&ivc->ve, close);
+
+ mutex_lock(&mdev->graph_mutex);
+ entity->use_count--;
+ mutex_unlock(&mdev->graph_mutex);
+ }
+
+ pm_runtime_put(&isp->pdev->dev);
+ mutex_unlock(&isp->video_lock);
+
+ return ret;
+}
+
+static const struct v4l2_file_operations isp_video_fops = {
+ .owner = THIS_MODULE,
+ .open = isp_video_open,
+ .release = isp_video_release,
+ .poll = vb2_fop_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = vb2_fop_mmap,
+};
+
+/*
+ * Video node ioctl operations
+ */
+static int isp_video_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct fimc_isp *isp = video_drvdata(file);
+
+ __fimc_vidioc_querycap(&isp->pdev->dev, cap, V4L2_CAP_STREAMING);
+ return 0;
+}
+
+static int isp_video_enum_fmt_mplane(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ const struct fimc_fmt *fmt;
+
+ if (f->index >= FIMC_ISP_NUM_FORMATS)
+ return -EINVAL;
+
+ fmt = fimc_isp_find_format(NULL, NULL, f->index);
+ if (WARN_ON(fmt == NULL))
+ return -EINVAL;
+
+ strlcpy(f->description, fmt->name, sizeof(f->description));
+ f->pixelformat = fmt->fourcc;
+
+ return 0;
+}
+
+static int isp_video_g_fmt_mplane(struct file *file, void *fh,
+ struct v4l2_format *f)
+{
+ struct fimc_isp *isp = video_drvdata(file);
+
+ f->fmt.pix_mp = isp->video_capture.pixfmt;
+ return 0;
+}
+
+static void __isp_video_try_fmt(struct fimc_isp *isp,
+ struct v4l2_pix_format_mplane *pixm,
+ const struct fimc_fmt **fmt)
+{
+ *fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, 2);
+
+ pixm->colorspace = V4L2_COLORSPACE_SRGB;
+ pixm->field = V4L2_FIELD_NONE;
+ pixm->num_planes = (*fmt)->memplanes;
+ pixm->pixelformat = (*fmt)->fourcc;
+ /*
+ * TODO: double check with the docmentation these width/height
+ * constraints are correct.
+ */
+ v4l_bound_align_image(&pixm->width, FIMC_ISP_SOURCE_WIDTH_MIN,
+ FIMC_ISP_SOURCE_WIDTH_MAX, 3,
+ &pixm->height, FIMC_ISP_SOURCE_HEIGHT_MIN,
+ FIMC_ISP_SOURCE_HEIGHT_MAX, 0, 0);
+}
+
+static int isp_video_try_fmt_mplane(struct file *file, void *fh,
+ struct v4l2_format *f)
+{
+ struct fimc_isp *isp = video_drvdata(file);
+
+ __isp_video_try_fmt(isp, &f->fmt.pix_mp, NULL);
+ return 0;
+}
+
+static int isp_video_s_fmt_mplane(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct fimc_isp *isp = video_drvdata(file);
+ struct fimc_is *is = fimc_isp_to_is(isp);
+ struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
+ const struct fimc_fmt *ifmt = NULL;
+ struct param_dma_output *dma = __get_isp_dma2(is);
+
+ __isp_video_try_fmt(isp, pixm, &ifmt);
+
+ if (WARN_ON(ifmt == NULL))
+ return -EINVAL;
+
+ dma->format = DMA_OUTPUT_FORMAT_BAYER;
+ dma->order = DMA_OUTPUT_ORDER_GB_BG;
+ dma->plane = ifmt->memplanes;
+ dma->bitwidth = ifmt->depth[0];
+ dma->width = pixm->width;
+ dma->height = pixm->height;
+
+ fimc_is_mem_barrier();
+
+ isp->video_capture.format = ifmt;
+ isp->video_capture.pixfmt = *pixm;
+
+ return 0;
+}
+
+/*
+ * Check for source/sink format differences at each link.
+ * Return 0 if the formats match or -EPIPE otherwise.
+ */
+static int isp_video_pipeline_validate(struct fimc_isp *isp)
+{
+ struct v4l2_subdev *sd = &isp->subdev;
+ struct v4l2_subdev_format sink_fmt, src_fmt;
+ struct media_pad *pad;
+ int ret;
+
+ while (1) {
+ /* Retrieve format at the sink pad */
+ pad = &sd->entity.pads[0];
+ if (!(pad->flags & MEDIA_PAD_FL_SINK))
+ break;
+ sink_fmt.pad = pad->index;
+ sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
+ if (ret < 0 && ret != -ENOIOCTLCMD)
+ return -EPIPE;
+
+ /* Retrieve format at the source pad */
+ pad = media_entity_remote_pad(pad);
+ if (pad == NULL ||
+ media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+ break;
+
+ sd = media_entity_to_v4l2_subdev(pad->entity);
+ src_fmt.pad = pad->index;
+ src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
+ if (ret < 0 && ret != -ENOIOCTLCMD)
+ return -EPIPE;
+
+ if (src_fmt.format.width != sink_fmt.format.width ||
+ src_fmt.format.height != sink_fmt.format.height ||
+ src_fmt.format.code != sink_fmt.format.code)
+ return -EPIPE;
+ }
+
+ return 0;
+}
+
+static int isp_video_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct fimc_isp *isp = video_drvdata(file);
+ struct exynos_video_entity *ve = &isp->video_capture.ve;
+ struct media_entity *me = &ve->vdev.entity;
+ int ret;
+
+ ret = media_entity_pipeline_start(me, &ve->pipe->mp);
+ if (ret < 0)
+ return ret;
+
+ ret = isp_video_pipeline_validate(isp);
+ if (ret < 0)
+ goto p_stop;
+
+ ret = vb2_ioctl_streamon(file, priv, type);
+ if (ret < 0)
+ goto p_stop;
+
+ isp->video_capture.streaming = 1;
+ return 0;
+p_stop:
+ media_entity_pipeline_stop(me);
+ return ret;
+}
+
+static int isp_video_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct fimc_isp *isp = video_drvdata(file);
+ struct fimc_is_video *video = &isp->video_capture;
+ int ret;
+
+ ret = vb2_ioctl_streamoff(file, priv, type);
+ if (ret < 0)
+ return ret;
+
+ media_entity_pipeline_stop(&video->ve.vdev.entity);
+ video->streaming = 0;
+ return 0;
+}
+
+static int isp_video_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *rb)
+{
+ struct fimc_isp *isp = video_drvdata(file);
+ int ret;
+
+ ret = vb2_ioctl_reqbufs(file, priv, rb);
+ if (ret < 0)
+ return ret;
+
+ if (rb->count && rb->count < FIMC_ISP_REQ_BUFS_MIN) {
+ rb->count = 0;
+ vb2_ioctl_reqbufs(file, priv, rb);
+ ret = -ENOMEM;
+ }
+
+ isp->video_capture.reqbufs_count = rb->count;
+ return ret;
+}
+
+static const struct v4l2_ioctl_ops isp_video_ioctl_ops = {
+ .vidioc_querycap = isp_video_querycap,
+ .vidioc_enum_fmt_vid_cap_mplane = isp_video_enum_fmt_mplane,
+ .vidioc_try_fmt_vid_cap_mplane = isp_video_try_fmt_mplane,
+ .vidioc_s_fmt_vid_cap_mplane = isp_video_s_fmt_mplane,
+ .vidioc_g_fmt_vid_cap_mplane = isp_video_g_fmt_mplane,
+ .vidioc_reqbufs = isp_video_reqbufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_streamon = isp_video_streamon,
+ .vidioc_streamoff = isp_video_streamoff,
+};
+
+int fimc_isp_video_device_register(struct fimc_isp *isp,
+ struct v4l2_device *v4l2_dev,
+ enum v4l2_buf_type type)
+{
+ struct vb2_queue *q = &isp->video_capture.vb_queue;
+ struct fimc_is_video *iv;
+ struct video_device *vdev;
+ int ret;
+
+ if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+ iv = &isp->video_capture;
+ else
+ return -ENOSYS;
+
+ mutex_init(&isp->video_lock);
+ INIT_LIST_HEAD(&iv->pending_buf_q);
+ INIT_LIST_HEAD(&iv->active_buf_q);
+ iv->format = fimc_isp_find_format(NULL, NULL, 0);
+ iv->pixfmt.width = IS_DEFAULT_WIDTH;
+ iv->pixfmt.height = IS_DEFAULT_HEIGHT;
+ iv->pixfmt.pixelformat = iv->format->fourcc;
+ iv->pixfmt.colorspace = V4L2_COLORSPACE_SRGB;
+ iv->reqbufs_count = 0;
+
+ memset(q, 0, sizeof(*q));
+ q->type = type;
+ q->io_modes = VB2_MMAP | VB2_USERPTR;
+ q->ops = &isp_video_capture_qops;
+ q->mem_ops = &vb2_dma_contig_memops;
+ q->buf_struct_size = sizeof(struct isp_video_buf);
+ q->drv_priv = isp;
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ q->lock = &isp->video_lock;
+
+ ret = vb2_queue_init(q);
+ if (ret < 0)
+ return ret;
+
+ vdev = &iv->ve.vdev;
+ memset(vdev, 0, sizeof(*vdev));
+ snprintf(vdev->name, sizeof(vdev->name), "fimc-is-isp.%s",
+ type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ?
+ "capture" : "output");
+ vdev->queue = q;
+ vdev->fops = &isp_video_fops;
+ vdev->ioctl_ops = &isp_video_ioctl_ops;
+ vdev->v4l2_dev = v4l2_dev;
+ vdev->minor = -1;
+ vdev->release = video_device_release_empty;
+ vdev->lock = &isp->video_lock;
+
+ iv->pad.flags = MEDIA_PAD_FL_SINK;
+ ret = media_entity_init(&vdev->entity, 1, &iv->pad, 0);
+ if (ret < 0)
+ return ret;
+
+ video_set_drvdata(vdev, isp);
+
+ ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
+ if (ret < 0) {
+ media_entity_cleanup(&vdev->entity);
+ return ret;
+ }
+
+ v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
+ vdev->name, video_device_node_name(vdev));
+
+ return 0;
+}
+
+void fimc_isp_video_device_unregister(struct fimc_isp *isp,
+ enum v4l2_buf_type type)
+{
+ struct exynos_video_entity *ve;
+
+ if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+ ve = &isp->video_capture.ve;
+ else
+ return;
+
+ mutex_lock(&isp->video_lock);
+
+ if (video_is_registered(&ve->vdev)) {
+ video_unregister_device(&ve->vdev);
+ media_entity_cleanup(&ve->vdev.entity);
+ ve->pipe = NULL;
+ }
+
+ mutex_unlock(&isp->video_lock);
+}
diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.h b/drivers/media/platform/exynos4-is/fimc-isp-video.h
new file mode 100644
index 000000000000..98c662654bb6
--- /dev/null
+++ b/drivers/media/platform/exynos4-is/fimc-isp-video.h
@@ -0,0 +1,44 @@
+/*
+ * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * Sylwester Nawrocki <s.nawrocki@samsung.com>
+ *
+ * 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.
+ */
+#ifndef FIMC_ISP_VIDEO__
+#define FIMC_ISP_VIDEO__
+
+#include <media/videobuf2-core.h>
+#include "fimc-isp.h"
+
+#ifdef CONFIG_VIDEO_EXYNOS4_ISP_DMA_CAPTURE
+int fimc_isp_video_device_register(struct fimc_isp *isp,
+ struct v4l2_device *v4l2_dev,
+ enum v4l2_buf_type type);
+
+void fimc_isp_video_device_unregister(struct fimc_isp *isp,
+ enum v4l2_buf_type type);
+
+void fimc_isp_video_irq_handler(struct fimc_is *is);
+#else
+static inline void fimc_isp_video_irq_handler(struct fimc_is *is)
+{
+}
+
+static inline int fimc_isp_video_device_register(struct fimc_isp *isp,
+ struct v4l2_device *v4l2_dev,
+ enum v4l2_buf_type type)
+{
+ return 0;
+}
+
+void fimc_isp_video_device_unregister(struct fimc_isp *isp,
+ enum v4l2_buf_type type)
+{
+}
+#endif /* !CONFIG_VIDEO_EXYNOS4_ISP_DMA_CAPTURE */
+
+#endif /* FIMC_ISP_VIDEO__ */
diff --git a/drivers/media/platform/exynos4-is/fimc-isp.c b/drivers/media/platform/exynos4-is/fimc-isp.c
index f3c6136aa5b4..be62d6b9ac48 100644
--- a/drivers/media/platform/exynos4-is/fimc-isp.c
+++ b/drivers/media/platform/exynos4-is/fimc-isp.c
@@ -25,6 +25,7 @@
#include <media/v4l2-device.h>
#include "media-dev.h"
+#include "fimc-isp-video.h"
#include "fimc-is-command.h"
#include "fimc-is-param.h"
#include "fimc-is-regs.h"
@@ -93,8 +94,8 @@ void fimc_isp_irq_handler(struct fimc_is *is)
is->i2h_cmd.args[1] = mcuctl_read(is, MCUCTL_REG_ISSR(21));
fimc_is_fw_clear_irq1(is, FIMC_IS_INT_FRAME_DONE_ISP);
+ fimc_isp_video_irq_handler(is);
- /* TODO: Complete ISP DMA interrupt handler */
wake_up(&is->irq_queue);
}
@@ -388,7 +389,33 @@ static int fimc_isp_subdev_open(struct v4l2_subdev *sd,
return 0;
}
+static int fimc_isp_subdev_registered(struct v4l2_subdev *sd)
+{
+ struct fimc_isp *isp = v4l2_get_subdevdata(sd);
+ int ret;
+
+ /* Use pipeline object allocated by the media device. */
+ isp->video_capture.ve.pipe = v4l2_get_subdev_hostdata(sd);
+
+ ret = fimc_isp_video_device_register(isp, sd->v4l2_dev,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
+ if (ret < 0)
+ isp->video_capture.ve.pipe = NULL;
+
+ return ret;
+}
+
+static void fimc_isp_subdev_unregistered(struct v4l2_subdev *sd)
+{
+ struct fimc_isp *isp = v4l2_get_subdevdata(sd);
+
+ fimc_isp_video_device_unregister(isp,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
+}
+
static const struct v4l2_subdev_internal_ops fimc_is_subdev_internal_ops = {
+ .registered = fimc_isp_subdev_registered,
+ .unregistered = fimc_isp_subdev_unregistered,
.open = fimc_isp_subdev_open,
};
diff --git a/drivers/media/platform/exynos4-is/fimc-isp.h b/drivers/media/platform/exynos4-is/fimc-isp.h
index 03bf95ab017b..4dc55a18d978 100644
--- a/drivers/media/platform/exynos4-is/fimc-isp.h
+++ b/drivers/media/platform/exynos4-is/fimc-isp.h
@@ -35,17 +35,18 @@ extern int fimc_isp_debug;
#define FIMC_ISP_SINK_WIDTH_MIN (16 + 8)
#define FIMC_ISP_SINK_HEIGHT_MIN (12 + 8)
#define FIMC_ISP_SOURCE_WIDTH_MIN 8
-#define FIMC_ISP_SOURC_HEIGHT_MIN 8
+#define FIMC_ISP_SOURCE_HEIGHT_MIN 8
#define FIMC_ISP_CAC_MARGIN_WIDTH 16
#define FIMC_ISP_CAC_MARGIN_HEIGHT 12
#define FIMC_ISP_SINK_WIDTH_MAX (4000 - 16)
#define FIMC_ISP_SINK_HEIGHT_MAX (4000 + 12)
#define FIMC_ISP_SOURCE_WIDTH_MAX 4000
-#define FIMC_ISP_SOURC_HEIGHT_MAX 4000
+#define FIMC_ISP_SOURCE_HEIGHT_MAX 4000
#define FIMC_ISP_NUM_FORMATS 3
#define FIMC_ISP_REQ_BUFS_MIN 2
+#define FIMC_ISP_REQ_BUFS_MAX 32
#define FIMC_ISP_SD_PAD_SINK 0
#define FIMC_ISP_SD_PAD_SRC_FIFO 1
@@ -100,6 +101,16 @@ struct fimc_isp_ctrls {
struct v4l2_ctrl *colorfx;
};
+struct isp_video_buf {
+ struct vb2_buffer vb;
+ dma_addr_t dma_addr[FIMC_ISP_MAX_PLANES];
+ unsigned int index;
+};
+
+#define to_isp_video_buf(_b) container_of(_b, struct isp_video_buf, vb)
+
+#define FIMC_ISP_MAX_BUFS 4
+
/**
* struct fimc_is_video - fimc-is video device structure
* @vdev: video_device structure
@@ -114,18 +125,26 @@ struct fimc_isp_ctrls {
* @format: current pixel format
*/
struct fimc_is_video {
- struct video_device vdev;
+ struct exynos_video_entity ve;
enum v4l2_buf_type type;
struct media_pad pad;
struct list_head pending_buf_q;
struct list_head active_buf_q;
struct vb2_queue vb_queue;
- unsigned int frame_count;
unsigned int reqbufs_count;
+ unsigned int buf_count;
+ unsigned int buf_mask;
+ unsigned int frame_count;
int streaming;
+ struct isp_video_buf *buffers[FIMC_ISP_MAX_BUFS];
const struct fimc_fmt *format;
+ struct v4l2_pix_format_mplane pixfmt;
};
+/* struct fimc_isp:state bit definitions */
+#define ST_ISP_VID_CAP_BUF_PREP 0
+#define ST_ISP_VID_CAP_STREAMING 1
+
/**
* struct fimc_isp - FIMC-IS ISP data structure
* @pdev: pointer to FIMC-IS platform device
diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c
index c670d67001f7..9bec34c4ac94 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -684,8 +684,16 @@ static int register_csis_entity(struct fimc_md *fmd,
static int register_fimc_is_entity(struct fimc_md *fmd, struct fimc_is *is)
{
struct v4l2_subdev *sd = &is->isp.subdev;
+ struct exynos_media_pipeline *ep;
int ret;
+ /* Allocate pipeline object for the ISP capture video node. */
+ ep = fimc_md_pipeline_create(fmd);
+ if (!ep)
+ return -ENOMEM;
+
+ v4l2_set_subdev_hostdata(sd, ep);
+
ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd);
if (ret) {
v4l2_err(&fmd->v4l2_dev,
@@ -959,16 +967,17 @@ static int __fimc_md_create_flite_source_links(struct fimc_md *fmd)
/* Create FIMC-IS links */
static int __fimc_md_create_fimc_is_links(struct fimc_md *fmd)
{
+ struct fimc_isp *isp = &fmd->fimc_is->isp;
struct media_entity *source, *sink;
int i, ret;
- source = &fmd->fimc_is->isp.subdev.entity;
+ source = &isp->subdev.entity;
for (i = 0; i < FIMC_MAX_DEVS; i++) {
if (fmd->fimc[i] == NULL)
continue;
- /* Link from IS-ISP subdev to FIMC */
+ /* Link from FIMC-IS-ISP subdev to FIMC */
sink = &fmd->fimc[i]->vid_cap.subdev.entity;
ret = media_entity_create_link(source, FIMC_ISP_SD_PAD_SRC_FIFO,
sink, FIMC_SD_PAD_SINK_FIFO, 0);
@@ -976,7 +985,15 @@ static int __fimc_md_create_fimc_is_links(struct fimc_md *fmd)
return ret;
}
- return ret;
+ /* Link from FIMC-IS-ISP subdev to fimc-is-isp.capture video node */
+ sink = &isp->video_capture.ve.vdev.entity;
+
+ /* Skip this link if the fimc-is-isp video node driver isn't built-in */
+ if (sink->num_pads == 0)
+ return 0;
+
+ return media_entity_create_link(source, FIMC_ISP_SD_PAD_SRC_DMA,
+ sink, 0, 0);
}
/**

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