[PATCH 10/10] drm/sti: add debugfs fps_show/fps_get mechanism for planes
Vincent Abriou
vincent.abriou at st.com
Fri Feb 12 09:14:09 UTC 2016
Display fps on demand for each used plane:
cat /sys/kernel/debug/dri/0/fps_get
Display fps in live in the console for each used plane:
echo 255 > /sys/kernel/debug/dri/0/fps_show
Signed-off-by: Vincent Abriou <vincent.abriou at st.com>
---
drivers/gpu/drm/sti/sti_cursor.c | 2 +
drivers/gpu/drm/sti/sti_drv.c | 128 +++++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/sti/sti_gdp.c | 2 +
drivers/gpu/drm/sti/sti_hqvdp.c | 11 ++--
drivers/gpu/drm/sti/sti_plane.c | 63 +++++++++++++++++++
drivers/gpu/drm/sti/sti_plane.h | 17 ++++++
6 files changed, 216 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/sti/sti_cursor.c b/drivers/gpu/drm/sti/sti_cursor.c
index 9eac1b9..82b5711 100644
--- a/drivers/gpu/drm/sti/sti_cursor.c
+++ b/drivers/gpu/drm/sti/sti_cursor.c
@@ -306,6 +306,8 @@ static void sti_cursor_atomic_update(struct drm_plane *drm_plane,
writel(cursor->clut_paddr, cursor->regs + CUR_CML);
writel(CUR_CTL_CLUT_UPDATE, cursor->regs + CUR_CTL);
+ sti_plane_update_fps(plane, true, false);
+
plane->status = STI_PLANE_UPDATED;
}
diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
index bcb1861..e5ef6b6 100644
--- a/drivers/gpu/drm/sti/sti_drv.c
+++ b/drivers/gpu/drm/sti/sti_drv.c
@@ -20,6 +20,7 @@
#include "sti_crtc.h"
#include "sti_drv.h"
+#include "sti_plane.h"
#define DRIVER_NAME "sti"
#define DRIVER_DESC "STMicroelectronics SoC DRM"
@@ -30,6 +31,130 @@
#define STI_MAX_FB_HEIGHT 4096
#define STI_MAX_FB_WIDTH 4096
+static int sti_drm_fps_get(void *data, u64 *val)
+{
+ struct drm_device *drm_dev = data;
+ struct drm_plane *p;
+ unsigned int i = 0;
+
+ *val = 0;
+ list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
+ struct sti_plane *plane = to_sti_plane(p);
+
+ *val |= plane->fps_info.output << i;
+ i++;
+ }
+
+ return 0;
+}
+
+static int sti_drm_fps_set(void *data, u64 val)
+{
+ struct drm_device *drm_dev = data;
+ struct drm_plane *p;
+ unsigned int i = 0;
+
+ list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
+ struct sti_plane *plane = to_sti_plane(p);
+
+ plane->fps_info.output = (val >> i) & 1;
+ i++;
+ }
+
+ return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(sti_drm_fps_fops,
+ sti_drm_fps_get, sti_drm_fps_set, "%llu\n");
+
+static int sti_drm_fps_dbg_show(struct seq_file *s, void *data)
+{
+ struct drm_info_node *node = s->private;
+ struct drm_device *dev = node->minor->dev;
+ struct drm_plane *p;
+ int ret;
+
+ ret = mutex_lock_interruptible(&dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ list_for_each_entry(p, &dev->mode_config.plane_list, head) {
+ struct sti_plane *plane = to_sti_plane(p);
+
+ seq_printf(s, "%s%s\n",
+ plane->fps_info.fps_str,
+ plane->fps_info.fips_str);
+ }
+
+ mutex_unlock(&dev->struct_mutex);
+ return 0;
+}
+
+static struct drm_info_list sti_drm_dbg_list[] = {
+ {"fps_get", sti_drm_fps_dbg_show, 0},
+};
+
+static int sti_drm_debugfs_create(struct dentry *root,
+ struct drm_minor *minor,
+ const char *name,
+ const struct file_operations *fops)
+{
+ struct drm_device *dev = minor->dev;
+ struct drm_info_node *node;
+ struct dentry *ent;
+
+ ent = debugfs_create_file(name, S_IRUGO | S_IWUSR, root, dev, fops);
+ if (IS_ERR(ent))
+ return PTR_ERR(ent);
+
+ node = kmalloc(sizeof(*node), GFP_KERNEL);
+ if (!node) {
+ debugfs_remove(ent);
+ return -ENOMEM;
+ }
+
+ node->minor = minor;
+ node->dent = ent;
+ node->info_ent = (void *)fops;
+
+ mutex_lock(&minor->debugfs_lock);
+ list_add(&node->list, &minor->debugfs_list);
+ mutex_unlock(&minor->debugfs_lock);
+
+ return 0;
+}
+
+static int sti_drm_dbg_init(struct drm_minor *minor)
+{
+ int ret;
+
+ ret = drm_debugfs_create_files(sti_drm_dbg_list,
+ ARRAY_SIZE(sti_drm_dbg_list),
+ minor->debugfs_root, minor);
+ if (ret)
+ goto err;
+
+ ret = sti_drm_debugfs_create(minor->debugfs_root, minor, "fps_show",
+ &sti_drm_fps_fops);
+ if (ret)
+ goto err;
+
+ DRM_INFO("%s: debugfs installed\n", DRIVER_NAME);
+ return 0;
+err:
+ DRM_ERROR("%s: cannot install debugfs\n", DRIVER_NAME);
+ return ret;
+}
+
+void sti_drm_dbg_cleanup(struct drm_minor *minor)
+{
+ drm_debugfs_remove_files(sti_drm_dbg_list,
+ ARRAY_SIZE(sti_drm_dbg_list), minor);
+
+ drm_debugfs_remove_files((struct drm_info_list *)&sti_drm_fps_fops,
+ 1, minor);
+}
+
static void sti_atomic_schedule(struct sti_private *private,
struct drm_atomic_state *state)
{
@@ -215,6 +340,9 @@ static struct drm_driver sti_driver = {
.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
.gem_prime_mmap = drm_gem_cma_prime_mmap,
+ .debugfs_init = sti_drm_dbg_init,
+ .debugfs_cleanup = sti_drm_dbg_cleanup,
+
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
diff --git a/drivers/gpu/drm/sti/sti_gdp.c b/drivers/gpu/drm/sti/sti_gdp.c
index 8f0e89f..67f606a 100644
--- a/drivers/gpu/drm/sti/sti_gdp.c
+++ b/drivers/gpu/drm/sti/sti_gdp.c
@@ -850,6 +850,8 @@ static void sti_gdp_atomic_update(struct drm_plane *drm_plane,
}
end:
+ sti_plane_update_fps(plane, true, false);
+
plane->status = STI_PLANE_UPDATED;
}
diff --git a/drivers/gpu/drm/sti/sti_hqvdp.c b/drivers/gpu/drm/sti/sti_hqvdp.c
index 8d2118a..e9c33fb 100644
--- a/drivers/gpu/drm/sti/sti_hqvdp.c
+++ b/drivers/gpu/drm/sti/sti_hqvdp.c
@@ -326,8 +326,6 @@ struct sti_hqvdp_cmd {
* @reset: reset control
* @vtg_nb: notifier to handle VTG Vsync
* @btm_field_pending: is there any bottom field (interlaced frame) to display
- * @curr_field_count: number of field updates
- * @last_field_count: number of field updates since last fps measure
* @hqvdp_cmd: buffer of commands
* @hqvdp_cmd_paddr: physical address of hqvdp_cmd
* @vtg: vtg for main data path
@@ -343,8 +341,6 @@ struct sti_hqvdp {
struct reset_control *reset;
struct notifier_block vtg_nb;
bool btm_field_pending;
- unsigned int curr_field_count;
- unsigned int last_field_count;
void *hqvdp_cmd;
dma_addr_t hqvdp_cmd_paddr;
struct sti_vtg *vtg;
@@ -836,11 +832,12 @@ int sti_hqvdp_vtg_cb(struct notifier_block *nb, unsigned long evt, void *data)
writel(hqvdp->hqvdp_cmd_paddr + btm_cmd_offset,
hqvdp->regs + HQVDP_MBX_NEXT_CMD);
- hqvdp->curr_field_count++;
hqvdp->btm_field_pending = false;
dev_dbg(hqvdp->dev, "%s Posted command:0x%x\n",
__func__, hqvdp->hqvdp_cmd_paddr);
+
+ sti_plane_update_fps(&hqvdp->plane, false, true);
}
return 0;
@@ -1204,8 +1201,6 @@ static void sti_hqvdp_atomic_update(struct drm_plane *drm_plane,
writel(hqvdp->hqvdp_cmd_paddr + cmd_offset,
hqvdp->regs + HQVDP_MBX_NEXT_CMD);
- hqvdp->curr_field_count++;
-
/* Interlaced : get ready to display the bottom field at next Vsync */
if (fb->flags & DRM_MODE_FB_INTERLACED)
hqvdp->btm_field_pending = true;
@@ -1213,6 +1208,8 @@ static void sti_hqvdp_atomic_update(struct drm_plane *drm_plane,
dev_dbg(hqvdp->dev, "%s Posted command:0x%x\n",
__func__, hqvdp->hqvdp_cmd_paddr + cmd_offset);
+ sti_plane_update_fps(plane, true, true);
+
plane->status = STI_PLANE_UPDATED;
}
diff --git a/drivers/gpu/drm/sti/sti_plane.c b/drivers/gpu/drm/sti/sti_plane.c
index 2e5c751..f10c98d 100644
--- a/drivers/gpu/drm/sti/sti_plane.c
+++ b/drivers/gpu/drm/sti/sti_plane.c
@@ -43,6 +43,69 @@ const char *sti_plane_to_str(struct sti_plane *plane)
}
}
+#define STI_FPS_INTERVAL_MS 3000
+
+static int sti_plane_timespec_ms_diff(struct timespec lhs, struct timespec rhs)
+{
+ struct timespec tmp_ts = timespec_sub(lhs, rhs);
+ u64 tmp_ns = (u64)timespec_to_ns(&tmp_ts);
+
+ do_div(tmp_ns, NSEC_PER_MSEC);
+
+ return (u32)tmp_ns;
+}
+
+void sti_plane_update_fps(struct sti_plane *plane,
+ bool new_frame,
+ bool new_field)
+{
+ struct timespec now;
+ struct sti_fps_info *fps;
+ int fpks, fipks, ms_since_last, num_frames, num_fields;
+
+ getrawmonotonic(&now);
+
+ /* Compute number of frame updates */
+ fps = &plane->fps_info;
+
+ if (new_field)
+ fps->curr_field_counter++;
+
+ /* do not perform fps calcul if new_frame is false */
+ if (!new_frame)
+ return;
+
+ fps->curr_frame_counter++;
+ ms_since_last = sti_plane_timespec_ms_diff(now, fps->last_timestamp);
+ num_frames = fps->curr_frame_counter - fps->last_frame_counter;
+
+ if (num_frames <= 0 || ms_since_last < STI_FPS_INTERVAL_MS)
+ return;
+
+ fps->last_timestamp = now;
+ fps->last_frame_counter = fps->curr_frame_counter;
+ fpks = (num_frames * 1000000) / ms_since_last;
+ snprintf(plane->fps_info.fps_str, FPS_LENGTH, "%-6s @ %d.%.3d fps",
+ sti_plane_to_str(plane), fpks / 1000, fpks % 1000);
+
+ if (fps->curr_field_counter) {
+ /* Compute number of field updates */
+ num_fields = fps->curr_field_counter - fps->last_field_counter;
+ fps->last_field_counter = fps->curr_field_counter;
+ fipks = (num_fields * 1000000) / ms_since_last;
+ snprintf(plane->fps_info.fips_str,
+ FPS_LENGTH, " - %d.%.3d field/sec",
+ fipks / 1000, fipks % 1000);
+ } else {
+ plane->fps_info.fips_str[0] = '\0';
+ }
+
+ if (fps->output)
+ DRM_INFO("%s%s\n",
+ plane->fps_info.fps_str,
+ plane->fps_info.fips_str);
+}
+
static void sti_plane_destroy(struct drm_plane *drm_plane)
{
DRM_DEBUG_DRIVER("\n");
diff --git a/drivers/gpu/drm/sti/sti_plane.h b/drivers/gpu/drm/sti/sti_plane.h
index 86f1e6f..c50a3b9 100644
--- a/drivers/gpu/drm/sti/sti_plane.h
+++ b/drivers/gpu/drm/sti/sti_plane.h
@@ -50,6 +50,18 @@ enum sti_plane_status {
STI_PLANE_DISABLED,
};
+#define FPS_LENGTH 64
+struct sti_fps_info {
+ bool output;
+ unsigned int curr_frame_counter;
+ unsigned int last_frame_counter;
+ unsigned int curr_field_counter;
+ unsigned int last_field_counter;
+ struct timespec last_timestamp;
+ char fps_str[FPS_LENGTH];
+ char fips_str[FPS_LENGTH];
+};
+
/**
* STI plane structure
*
@@ -57,15 +69,20 @@ enum sti_plane_status {
* @desc: plane type & id
* @status: to know the status of the plane
* @zorder: plane z-order
+ * @fps_info: frame per second info
*/
struct sti_plane {
struct drm_plane drm_plane;
enum sti_plane_desc desc;
enum sti_plane_status status;
int zorder;
+ struct sti_fps_info fps_info;
};
const char *sti_plane_to_str(struct sti_plane *plane);
+void sti_plane_update_fps(struct sti_plane *plane,
+ bool new_frame,
+ bool new_field);
void sti_plane_init_property(struct sti_plane *plane,
enum drm_plane_type type);
#endif
--
1.9.1
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