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authorPhilippe CORNU <philippe.cornu@st.com>2018-04-07 23:35:03 +0200
committerPhilippe Cornu <philippe.cornu@st.com>2018-04-19 12:15:38 +0200
commit25bb1a9de3cc36ea1fd2dc10f4a375571be0ff37 (patch)
tree24b749f5989edddad0c5d2bfb385a05996697a42 /drivers/gpu/drm/stm
parentc8da819478e8149656ff12e40fde2446f9034e81 (diff)
downloadlinux-25bb1a9de3cc36ea1fd2dc10f4a375571be0ff37.tar.bz2
drm/stm: ltdc: add user update info in plane print state
This patch adds the user update information in frames-per-second into the drm debugfs plane state. Signed-off-by: Philippe Cornu <philippe.cornu@st.com> Reviewed-by: Vincent Abriou <vincent.abriou@st.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180407213503.30932-1-philippe.cornu@st.com
Diffstat (limited to 'drivers/gpu/drm/stm')
-rw-r--r--drivers/gpu/drm/stm/ltdc.c22
-rw-r--r--drivers/gpu/drm/stm/ltdc.h8
2 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index 2b745cfc9000..061d2b6e5157 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -729,6 +729,8 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane,
reg_update_bits(ldev->regs, LTDC_L1CR + lofs,
LXCR_LEN | LXCR_CLUTEN, val);
+ ldev->plane_fpsi[plane->index].counter++;
+
mutex_lock(&ldev->err_lock);
if (ldev->error_status & ISR_FUIF) {
DRM_DEBUG_DRIVER("Fifo underrun\n");
@@ -754,6 +756,25 @@ static void ltdc_plane_atomic_disable(struct drm_plane *plane,
oldstate->crtc->base.id, plane->base.id);
}
+static void ltdc_plane_atomic_print_state(struct drm_printer *p,
+ const struct drm_plane_state *state)
+{
+ struct drm_plane *plane = state->plane;
+ struct ltdc_device *ldev = plane_to_ltdc(plane);
+ struct fps_info *fpsi = &ldev->plane_fpsi[plane->index];
+ int ms_since_last;
+ ktime_t now;
+
+ now = ktime_get();
+ ms_since_last = ktime_to_ms(ktime_sub(now, fpsi->last_timestamp));
+
+ drm_printf(p, "\tuser_updates=%dfps\n",
+ DIV_ROUND_CLOSEST(fpsi->counter * 1000, ms_since_last));
+
+ fpsi->last_timestamp = now;
+ fpsi->counter = 0;
+}
+
static const struct drm_plane_funcs ltdc_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
@@ -761,6 +782,7 @@ static const struct drm_plane_funcs ltdc_plane_funcs = {
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+ .atomic_print_state = ltdc_plane_atomic_print_state,
};
static const struct drm_plane_helper_funcs ltdc_plane_helper_funcs = {
diff --git a/drivers/gpu/drm/stm/ltdc.h b/drivers/gpu/drm/stm/ltdc.h
index 61a80d00bc3b..1e16d6afb0d2 100644
--- a/drivers/gpu/drm/stm/ltdc.h
+++ b/drivers/gpu/drm/stm/ltdc.h
@@ -20,6 +20,13 @@ struct ltdc_caps {
bool non_alpha_only_l1; /* non-native no-alpha formats on layer 1 */
};
+#define LTDC_MAX_LAYER 4
+
+struct fps_info {
+ unsigned int counter;
+ ktime_t last_timestamp;
+};
+
struct ltdc_device {
void __iomem *regs;
struct clk *pixel_clk; /* lcd pixel clock */
@@ -27,6 +34,7 @@ struct ltdc_device {
struct ltdc_caps caps;
u32 error_status;
u32 irq_status;
+ struct fps_info plane_fpsi[LTDC_MAX_LAYER];
};
int ltdc_load(struct drm_device *ddev);