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Subject[PATCH 1/3] media: vsp1: drm: Split vsp1_du_setup_lif()
Date
Break vsp1_du_setup_lif() into components more suited to the DRM Atomic
API. The existing vsp1_du_setup_lif() API call is maintained as it is
still used from the DU.

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
---
drivers/media/platform/vsp1/vsp1_drm.c | 233 ++++++++++++++++++-------
include/media/vsp1.h | 32 +++-
2 files changed, 199 insertions(+), 66 deletions(-)

diff --git a/drivers/media/platform/vsp1/vsp1_drm.c b/drivers/media/platform/vsp1/vsp1_drm.c
index a4a45d68a6ef..ce5c0780680f 100644
--- a/drivers/media/platform/vsp1/vsp1_drm.c
+++ b/drivers/media/platform/vsp1/vsp1_drm.c
@@ -616,18 +616,15 @@ int vsp1_du_init(struct device *dev)
EXPORT_SYMBOL_GPL(vsp1_du_init);

/**
- * vsp1_du_setup_lif - Setup the output part of the VSP pipeline
+ * vsp1_du_atomic_modeset - Configure the mode as part of an atomic update
* @dev: the VSP device
* @pipe_index: the DRM pipeline index
- * @cfg: the LIF configuration
+ * @cfg: the mode configuration
*
* Configure the output part of VSP DRM pipeline for the given frame @cfg.width
* and @cfg.height. This sets up formats on the BRx source pad, the WPF sink and
* source pads, and the LIF sink pad.
*
- * The @pipe_index argument selects which DRM pipeline to setup. The number of
- * available pipelines depend on the VSP instance.
- *
* As the media bus code on the blend unit source pad is conditioned by the
* configuration of its sink 0 pad, we also set up the formats on all blend unit
* sinks, even if the configuration will be overwritten later by
@@ -635,15 +632,14 @@ EXPORT_SYMBOL_GPL(vsp1_du_init);
* a well defined state.
*
* Return 0 on success or a negative error code on failure.
+ *
*/
-int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
- const struct vsp1_du_lif_config *cfg)
+int vsp1_du_atomic_modeset(struct device *dev, unsigned int pipe_index,
+ const struct vsp1_du_modeset_config *cfg)
{
struct vsp1_device *vsp1 = dev_get_drvdata(dev);
struct vsp1_drm_pipeline *drm_pipe;
struct vsp1_pipeline *pipe;
- unsigned long flags;
- unsigned int i;
int ret;

if (pipe_index >= vsp1->info->lif_count)
@@ -652,60 +648,6 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
drm_pipe = &vsp1->drm->pipe[pipe_index];
pipe = &drm_pipe->pipe;

- if (!cfg) {
- struct vsp1_brx *brx;
-
- mutex_lock(&vsp1->drm->lock);
-
- brx = to_brx(&pipe->brx->subdev);
-
- /*
- * NULL configuration means the CRTC is being disabled, stop
- * the pipeline and turn the light off.
- */
- ret = vsp1_pipeline_stop(pipe);
- if (ret == -ETIMEDOUT)
- dev_err(vsp1->dev, "DRM pipeline stop timeout\n");
-
- for (i = 0; i < ARRAY_SIZE(pipe->inputs); ++i) {
- struct vsp1_rwpf *rpf = pipe->inputs[i];
-
- if (!rpf)
- continue;
-
- /*
- * Remove the RPF from the pipe and the list of BRx
- * inputs.
- */
- WARN_ON(!rpf->entity.pipe);
- rpf->entity.pipe = NULL;
- list_del(&rpf->entity.list_pipe);
- pipe->inputs[i] = NULL;
-
- brx->inputs[rpf->brx_input].rpf = NULL;
- }
-
- drm_pipe->du_complete = NULL;
- pipe->num_inputs = 0;
-
- dev_dbg(vsp1->dev, "%s: pipe %u: releasing %s\n",
- __func__, pipe->lif->index,
- BRX_NAME(pipe->brx));
-
- list_del(&pipe->brx->list_pipe);
- pipe->brx->pipe = NULL;
- pipe->brx = NULL;
-
- mutex_unlock(&vsp1->drm->lock);
-
- vsp1_dlm_reset(pipe->output->dlm);
- vsp1_device_put(vsp1);
-
- dev_dbg(vsp1->dev, "%s: pipeline disabled\n", __func__);
-
- return 0;
- }
-
drm_pipe->width = cfg->width;
drm_pipe->height = cfg->height;
pipe->interlaced = cfg->interlaced;
@@ -722,8 +664,43 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
goto unlock;

ret = vsp1_du_pipeline_setup_output(vsp1, pipe);
- if (ret < 0)
- goto unlock;
+
+unlock:
+ mutex_unlock(&vsp1->drm->lock);
+
+ return ret;
+}
+
+/**
+ * vsp1_du_atomic_enable - Enable and start a DU pipeline
+ * @dev: the VSP device
+ * @pipe_index: the DRM pipeline index
+ * @cfg: the enablement configuration
+ *
+ * The @pipe_index argument selects which DRM pipeline to enable. The number of
+ * available pipelines depend on the VSP instance.
+ *
+ * The configuration passes a callback function to register notification of
+ * frame completion events.
+ *
+ * Return 0 on success or a negative error code on failure.
+ */
+int vsp1_du_atomic_enable(struct device *dev, unsigned int pipe_index,
+ const struct vsp1_du_enable_config *cfg)
+{
+ struct vsp1_device *vsp1 = dev_get_drvdata(dev);
+ struct vsp1_drm_pipeline *drm_pipe;
+ struct vsp1_pipeline *pipe;
+ unsigned long flags;
+ int ret;
+
+ if (pipe_index >= vsp1->info->lif_count)
+ return -EINVAL;
+
+ drm_pipe = &vsp1->drm->pipe[pipe_index];
+ pipe = &drm_pipe->pipe;
+
+ mutex_lock(&vsp1->drm->lock);

/* Enable the VSP1. */
ret = vsp1_device_get(vsp1);
@@ -758,6 +735,132 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
dev_dbg(vsp1->dev, "%s: pipeline enabled\n", __func__);

return 0;
+
+}
+EXPORT_SYMBOL_GPL(vsp1_du_atomic_enable);
+
+
+/**
+ * vsp1_du_atomic_disable - Disable and stop a DU pipeline
+ * @dev: the VSP device
+ * @pipe_index: the DRM pipeline index
+ *
+ * The @pipe_index argument selects which DRM pipeline to disable. The number
+ * of available pipelines depend on the VSP instance.
+ *
+ * Return 0 on success or a negative error code on failure.
+ */
+int vsp1_du_atomic_disable(struct device *dev, unsigned int pipe_index)
+{
+ struct vsp1_device *vsp1 = dev_get_drvdata(dev);
+ struct vsp1_drm_pipeline *drm_pipe;
+ struct vsp1_pipeline *pipe;
+ struct vsp1_brx *brx;
+ unsigned int i;
+ int ret;
+
+ if (pipe_index >= vsp1->info->lif_count)
+ return -EINVAL;
+
+ drm_pipe = &vsp1->drm->pipe[pipe_index];
+ pipe = &drm_pipe->pipe;
+
+ mutex_lock(&vsp1->drm->lock);
+
+ brx = to_brx(&pipe->brx->subdev);
+
+ /*
+ * NULL configuration means the CRTC is being disabled, stop
+ * the pipeline and turn the light off.
+ */
+ ret = vsp1_pipeline_stop(pipe);
+ if (ret == -ETIMEDOUT)
+ dev_err(vsp1->dev, "DRM pipeline stop timeout\n");
+
+ for (i = 0; i < ARRAY_SIZE(pipe->inputs); ++i) {
+ struct vsp1_rwpf *rpf = pipe->inputs[i];
+
+ if (!rpf)
+ continue;
+
+ /*
+ * Remove the RPF from the pipe and the list of BRx
+ * inputs.
+ */
+ WARN_ON(!rpf->entity.pipe);
+ rpf->entity.pipe = NULL;
+ list_del(&rpf->entity.list_pipe);
+ pipe->inputs[i] = NULL;
+
+ brx->inputs[rpf->brx_input].rpf = NULL;
+ }
+
+ drm_pipe->du_complete = NULL;
+ pipe->num_inputs = 0;
+
+ dev_dbg(vsp1->dev, "%s: pipe %u: releasing %s\n",
+ __func__, pipe->lif->index,
+ BRX_NAME(pipe->brx));
+
+ list_del(&pipe->brx->list_pipe);
+ pipe->brx->pipe = NULL;
+ pipe->brx = NULL;
+
+ mutex_unlock(&vsp1->drm->lock);
+
+ vsp1_dlm_reset(pipe->output->dlm);
+ vsp1_device_put(vsp1);
+
+ dev_dbg(vsp1->dev, "%s: pipeline disabled\n", __func__);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(vsp1_du_atomic_disable);
+
+/**
+ * vsp1_du_setup_lif - Setup the output part of the VSP pipeline
+ * @dev: the VSP device
+ * @pipe_index: the DRM pipeline index
+ * @cfg: the LIF configuration
+ *
+ * Configure the output part of VSP DRM pipeline for the given frame @cfg.width
+ * and @cfg.height. This sets up formats on the BRx source pad, the WPF sink and
+ * source pads, and the LIF sink pad.
+ *
+ * The @pipe_index argument selects which DRM pipeline to setup. The number of
+ * available pipelines depend on the VSP instance.
+ *
+ * As the media bus code on the blend unit source pad is conditioned by the
+ * configuration of its sink 0 pad, we also set up the formats on all blend unit
+ * sinks, even if the configuration will be overwritten later by
+ * vsp1_du_setup_rpf(). This ensures that the blend unit configuration is set to
+ * a well defined state.
+ *
+ * Return 0 on success or a negative error code on failure.
+ */
+int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
+ const struct vsp1_du_lif_config *cfg)
+{
+ int ret;
+
+ struct vsp1_du_modeset_config modes = {
+ .width = cfg->width,
+ .height = cfg->height,
+ .interlaced = cfg->interlaced,
+ };
+ struct vsp1_du_enable_config enable = {
+ .callback = cfg->callback,
+ .callback_data = cfg->callback_data,
+ };
+
+ if (!cfg)
+ return vsp1_du_atomic_disable(dev, pipe_index);
+
+ ret = vsp1_du_atomic_modeset(dev, pipe_index, &modes);
+ if (ret)
+ return ret;
+
+ return vsp1_du_atomic_enable(dev, pipe_index, &enable);
}
EXPORT_SYMBOL_GPL(vsp1_du_setup_lif);

diff --git a/include/media/vsp1.h b/include/media/vsp1.h
index cc1b0d42ce95..13f5a1c4d45a 100644
--- a/include/media/vsp1.h
+++ b/include/media/vsp1.h
@@ -21,7 +21,7 @@ int vsp1_du_init(struct device *dev);
#define VSP1_DU_STATUS_WRITEBACK BIT(1)

/**
- * struct vsp1_du_lif_config - VSP LIF configuration
+ * struct vsp1_du_lif_config - VSP LIF configuration - Deprecated
* @width: output frame width
* @height: output frame height
* @interlaced: true for interlaced pipelines
@@ -42,6 +42,30 @@ struct vsp1_du_lif_config {
int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
const struct vsp1_du_lif_config *cfg);

+/**
+ * struct vsp1_du_modeset_config - VSP LIF Mode configuration
+ * @width: output frame width
+ * @height: output frame height
+ * @interlaced: true for interlaced pipelines
+ */
+struct vsp1_du_modeset_config {
+ unsigned int width;
+ unsigned int height;
+ bool interlaced;
+};
+
+/**
+ * struct vsp1_du_enable_config - VSP enable configuration
+ * @callback: frame completion callback function (optional). When a callback
+ * is provided, the VSP driver guarantees that it will be called once
+ * and only once for each vsp1_du_atomic_flush() call.
+ * @callback_data: data to be passed to the frame completion callback
+ */
+struct vsp1_du_enable_config {
+ void (*callback)(void *data, unsigned int status, u32 crc);
+ void *callback_data;
+};
+
/**
* struct vsp1_du_atomic_config - VSP atomic configuration parameters
* @pixelformat: plane pixel format (V4L2 4CC)
@@ -106,6 +130,12 @@ struct vsp1_du_atomic_pipe_config {
struct vsp1_du_writeback_config writeback;
};

+
+int vsp1_du_atomic_modeset(struct device *dev, unsigned int pipe_index,
+ const struct vsp1_du_modeset_config *cfg);
+int vsp1_du_atomic_enable(struct device *dev, unsigned int pipe_index,
+ const struct vsp1_du_enable_config *cfg);
+int vsp1_du_atomic_disable(struct device *dev, unsigned int pipe_index);
void vsp1_du_atomic_begin(struct device *dev, unsigned int pipe_index);
int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index,
unsigned int rpf,
--
2.20.1
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