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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
This commit is contained in:
Philippe CORNU 2018-04-07 23:35:03 +02:00 committed by Philippe Cornu
parent c8da819478
commit 25bb1a9de3
2 changed files with 30 additions and 0 deletions
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22
drivers/gpu/drm/stm/ltdc.c
View File

@ -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 = {

8
drivers/gpu/drm/stm/ltdc.h
View File

@ -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);