From 8894cd5824e500c530db5f6f399d22edbcddea73 Mon Sep 17 00:00:00 2001 From: Mihail Atanassov Date: Thu, 7 Nov 2019 11:42:28 +0000 Subject: [PATCH] drm/komeda: Add debugfs node to control error verbosity Named 'err_verbosity', currently with only 1 active bit in that replicates the existing level - print error events once per flip. Reviewed-by: James Qian Wang (Arm Technology China) Acked-by: Liviu Dudau Signed-off-by: Mihail Atanassov Link: https://patchwork.freedesktop.org/patch/msgid/20191107114155.54307-2-mihail.atanassov@arm.com --- drivers/gpu/drm/arm/display/komeda/komeda_dev.c | 4 ++++ drivers/gpu/drm/arm/display/komeda/komeda_dev.h | 14 ++++++++++++-- drivers/gpu/drm/arm/display/komeda/komeda_event.c | 9 +++++++-- drivers/gpu/drm/arm/display/komeda/komeda_kms.c | 2 +- 4 files changed, 24 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c index 14d5c5da9e3b..4e46f650fddf 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c @@ -58,6 +58,8 @@ static void komeda_debugfs_init(struct komeda_dev *mdev) mdev->debugfs_root = debugfs_create_dir("komeda", NULL); debugfs_create_file("register", 0444, mdev->debugfs_root, mdev, &komeda_register_fops); + debugfs_create_x16("err_verbosity", 0664, mdev->debugfs_root, + &mdev->err_verbosity); } #endif @@ -273,6 +275,8 @@ struct komeda_dev *komeda_dev_create(struct device *dev) goto err_cleanup; } + mdev->err_verbosity = KOMEDA_DEV_PRINT_ERR_EVENTS; + #ifdef CONFIG_DEBUG_FS komeda_debugfs_init(mdev); #endif diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h index 414200233b64..b5bd3d5898ee 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h @@ -202,6 +202,14 @@ struct komeda_dev { /** @debugfs_root: root directory of komeda debugfs */ struct dentry *debugfs_root; + /** + * @err_verbosity: bitmask for how much extra info to print on error + * + * See KOMEDA_DEV_* macros for details. + */ + u16 err_verbosity; + /* Print a single line per error per frame with error events. */ +#define KOMEDA_DEV_PRINT_ERR_EVENTS BIT(0) }; static inline bool @@ -219,9 +227,11 @@ void komeda_dev_destroy(struct komeda_dev *mdev); struct komeda_dev *dev_to_mdev(struct device *dev); #ifdef CONFIG_DRM_KOMEDA_ERROR_PRINT -void komeda_print_events(struct komeda_events *evts); +void komeda_print_events(struct komeda_events *evts, struct drm_device *dev); #else -static inline void komeda_print_events(struct komeda_events *evts) {} +static inline void komeda_print_events(struct komeda_events *evts, + struct drm_device *dev) +{} #endif int komeda_dev_resume(struct komeda_dev *mdev); diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_event.c b/drivers/gpu/drm/arm/display/komeda/komeda_event.c index a36fb86cc054..575ed4df74ed 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_event.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_event.c @@ -107,10 +107,12 @@ static bool is_new_frame(struct komeda_events *a) (KOMEDA_EVENT_FLIP | KOMEDA_EVENT_EOW); } -void komeda_print_events(struct komeda_events *evts) +void komeda_print_events(struct komeda_events *evts, struct drm_device *dev) { - u64 print_evts = KOMEDA_ERR_EVENTS; + u64 print_evts = 0; static bool en_print = true; + struct komeda_dev *mdev = dev->dev_private; + u16 const err_verbosity = mdev->err_verbosity; /* reduce the same msg print, only print the first evt for one frame */ if (evts->global || is_new_frame(evts)) @@ -118,6 +120,9 @@ void komeda_print_events(struct komeda_events *evts) if (!en_print) return; + if (err_verbosity & KOMEDA_DEV_PRINT_ERR_EVENTS) + print_evts |= KOMEDA_ERR_EVENTS; + if ((evts->global | evts->pipes[0] | evts->pipes[1]) & print_evts) { char msg[256]; struct komeda_str str; diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c index d49772de93e0..e30a5b43caa9 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c @@ -48,7 +48,7 @@ static irqreturn_t komeda_kms_irq_handler(int irq, void *data) memset(&evts, 0, sizeof(evts)); status = mdev->funcs->irq_handler(mdev, &evts); - komeda_print_events(&evts); + komeda_print_events(&evts, drm); /* Notify the crtc to handle the events */ for (i = 0; i < kms->n_crtcs; i++) -- 2.30.2