GitHub-Mirror/build
2
0
Fork 0
mirror of https://github.com/Fishwaldo/build.git synced 2025-07-23 21:39:02 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
build/patch/kernel/rk322x-current/01-linux-0021-drm-from-5.10.patch

2194 lines
78 KiB
Diff
Raw Blame History

From b162fb6ee80dd2a986dc4d0d4eaefd29f9152f9c Mon Sep 17 00:00:00 2001
From: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Date: Thu, 11 Jun 2020 10:58:43 +0200
Subject: [PATCH] drm/panfrost: Make sure GPU is powered on when reading
GPU_LATEST_FLUSH_ID
Bifrost devices do support the flush reduction feature, so on first job
submit we were trying to read the register while still powered off.
If the GPU is powered off, the feature doesn't bring any benefit, so
don't try to read.
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200611085900.49740-1-tomeu.vizoso@collabora.com
(cherry picked from commit 3a74265c54f883c847ed8554129baefb3e04f135)
---
drivers/gpu/drm/panfrost/panfrost_gpu.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c
index f2c1ddc41a9b..e0f190e43813 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gpu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c
@@ -10,6 +10,7 @@
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
#include "panfrost_device.h"
#include "panfrost_features.h"
@@ -368,7 +369,16 @@ void panfrost_gpu_fini(struct panfrost_device *pfdev)
u32 panfrost_gpu_get_latest_flush_id(struct panfrost_device *pfdev)
{
- if (panfrost_has_hw_feature(pfdev, HW_FEATURE_FLUSH_REDUCTION))
- return gpu_read(pfdev, GPU_LATEST_FLUSH_ID);
+ u32 flush_id;
+
+ if (panfrost_has_hw_feature(pfdev, HW_FEATURE_FLUSH_REDUCTION)) {
+ /* Flush reduction only makes sense when the GPU is kept powered on between jobs */
+ if (pm_runtime_get_if_in_use(pfdev->dev)) {
+ flush_id = gpu_read(pfdev, GPU_LATEST_FLUSH_ID);
+ pm_runtime_put(pfdev->dev);
+ return flush_id;
+ }
+ }
+
return 0;
}
From 2aacfa5ced256a281c36ea2577fc5fb7a4974e9b Mon Sep 17 00:00:00 2001
From: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Date: Thu, 11 Jun 2020 10:58:44 +0200
Subject: [PATCH] drm/panfrost: Add compatible string for bifrost
Mesa now supports some Bifrost devices, so enable it.
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200611085900.49740-2-tomeu.vizoso@collabora.com
(cherry picked from commit 72ef7fe96fd20d3d0e538e165b393819f99870ad)
---
drivers/gpu/drm/panfrost/panfrost_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c
index ada51df9a7a3..f79f98534ab6 100644
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -677,6 +677,7 @@ static const struct of_device_id dt_match[] = {
{ .compatible = "arm,mali-t830", .data = &default_data, },
{ .compatible = "arm,mali-t860", .data = &default_data, },
{ .compatible = "arm,mali-t880", .data = &default_data, },
+ { .compatible = "arm,mali-bifrost", .data = &default_data, },
{}
};
MODULE_DEVICE_TABLE(of, dt_match);
From ef833747ee892a26711ee7765ff81166cd5f1d52 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= <peron.clem@gmail.com>
Date: Fri, 10 Jul 2020 11:53:56 +0200
Subject: [PATCH] drm/panfrost: avoid static declaration
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This declaration can be avoided so change it.
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200710095409.407087-2-peron.clem@gmail.com
(cherry picked from commit 862cc626210e34501b4d7a7795c41a67785987e5)
---
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 38 ++++++++++++++---------------
1 file changed, 18 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 413987038fbf..1b560b903ea6 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -14,7 +14,24 @@
#include "panfrost_gpu.h"
#include "panfrost_regs.h"
-static void panfrost_devfreq_update_utilization(struct panfrost_device *pfdev);
+static void panfrost_devfreq_update_utilization(struct panfrost_device *pfdev)
+{
+ ktime_t now;
+ ktime_t last;
+
+ if (!pfdev->devfreq.devfreq)
+ return;
+
+ now = ktime_get();
+ last = pfdev->devfreq.time_last_update;
+
+ if (atomic_read(&pfdev->devfreq.busy_count) > 0)
+ pfdev->devfreq.busy_time += ktime_sub(now, last);
+ else
+ pfdev->devfreq.idle_time += ktime_sub(now, last);
+
+ pfdev->devfreq.time_last_update = now;
+}
static int panfrost_devfreq_target(struct device *dev, unsigned long *freq,
u32 flags)
@@ -139,25 +156,6 @@ void panfrost_devfreq_suspend(struct panfrost_device *pfdev)
devfreq_suspend_device(pfdev->devfreq.devfreq);
}
-static void panfrost_devfreq_update_utilization(struct panfrost_device *pfdev)
-{
- ktime_t now;
- ktime_t last;
-
- if (!pfdev->devfreq.devfreq)
- return;
-
- now = ktime_get();
- last = pfdev->devfreq.time_last_update;
-
- if (atomic_read(&pfdev->devfreq.busy_count) > 0)
- pfdev->devfreq.busy_time += ktime_sub(now, last);
- else
- pfdev->devfreq.idle_time += ktime_sub(now, last);
-
- pfdev->devfreq.time_last_update = now;
-}
-
void panfrost_devfreq_record_busy(struct panfrost_device *pfdev)
{
panfrost_devfreq_update_utilization(pfdev);
From e79051392b32df8ba3dcb9cd160f1dfe5631ca1a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= <peron.clem@gmail.com>
Date: Fri, 10 Jul 2020 11:53:57 +0200
Subject: [PATCH] drm/panfrost: clean headers in devfreq
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Don't include not required headers and sort them.
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200710095409.407087-3-peron.clem@gmail.com
(cherry picked from commit 9713e942a539c55b5e0bc64ba83b736bda1087fe)
---
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 1b560b903ea6..df7b71da9a84 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -1,18 +1,14 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright 2019 Collabora ltd. */
+
+#include <linux/clk.h>
#include <linux/devfreq.h>
#include <linux/devfreq_cooling.h>
#include <linux/platform_device.h>
#include <linux/pm_opp.h>
-#include <linux/clk.h>
-#include <linux/regulator/consumer.h>
#include "panfrost_device.h"
#include "panfrost_devfreq.h"
-#include "panfrost_features.h"
-#include "panfrost_issues.h"
-#include "panfrost_gpu.h"
-#include "panfrost_regs.h"
static void panfrost_devfreq_update_utilization(struct panfrost_device *pfdev)
{
From b644d4b83e0c6b86565dc6e7eda0e368e855c56d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= <peron.clem@gmail.com>
Date: Fri, 10 Jul 2020 11:53:58 +0200
Subject: [PATCH] drm/panfrost: don't use pfdevfreq.busy_count to know if hw is
idle
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This use devfreq variable that will be lock with spinlock in future
patches. We should either introduce a function to access this one
but as devfreq is optional let's just remove it.
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200710095409.407087-4-peron.clem@gmail.com
(cherry picked from commit eb9dd67249b55fd1fa3d7359be387ea2079247a6)
---
drivers/gpu/drm/panfrost/panfrost_job.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
index 360146f6f3d9..4c13dbae68fb 100644
--- a/drivers/gpu/drm/panfrost/panfrost_job.c
+++ b/drivers/gpu/drm/panfrost/panfrost_job.c
@@ -581,10 +581,6 @@ int panfrost_job_is_idle(struct panfrost_device *pfdev)
struct panfrost_job_slot *js = pfdev->js;
int i;
- /* Check whether the hardware is idle */
- if (atomic_read(&pfdev->devfreq.busy_count))
- return false;
-
for (i = 0; i < NUM_JOB_SLOTS; i++) {
/* If there are any jobs in the HW queue, we're not idle */
if (atomic_read(&js->queue[i].sched.hw_rq_count))
From 1a29b20297e3cfb87ccd6c2a05b385b1a3adf099 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= <peron.clem@gmail.com>
Date: Fri, 10 Jul 2020 11:53:59 +0200
Subject: [PATCH] drm/panfrost: introduce panfrost_devfreq struct
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Introduce a proper panfrost_devfreq to deal with devfreq variables.
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200710095409.407087-5-peron.clem@gmail.com
(cherry picked from commit 9bfacfc82f903b066b0b63460d5b7943705048a4)
---
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 76 ++++++++++++++++-------------
drivers/gpu/drm/panfrost/panfrost_devfreq.h | 20 +++++++-
drivers/gpu/drm/panfrost/panfrost_device.h | 11 ++---
drivers/gpu/drm/panfrost/panfrost_job.c | 6 +--
4 files changed, 66 insertions(+), 47 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index df7b71da9a84..962550363391 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -10,23 +10,23 @@
#include "panfrost_device.h"
#include "panfrost_devfreq.h"
-static void panfrost_devfreq_update_utilization(struct panfrost_device *pfdev)
+static void panfrost_devfreq_update_utilization(struct panfrost_devfreq *pfdevfreq)
{
ktime_t now;
ktime_t last;
- if (!pfdev->devfreq.devfreq)
+ if (!pfdevfreq->devfreq)
return;
now = ktime_get();
- last = pfdev->devfreq.time_last_update;
+ last = pfdevfreq->time_last_update;
- if (atomic_read(&pfdev->devfreq.busy_count) > 0)
- pfdev->devfreq.busy_time += ktime_sub(now, last);
+ if (atomic_read(&pfdevfreq->busy_count) > 0)
+ pfdevfreq->busy_time += ktime_sub(now, last);
else
- pfdev->devfreq.idle_time += ktime_sub(now, last);
+ pfdevfreq->idle_time += ktime_sub(now, last);
- pfdev->devfreq.time_last_update = now;
+ pfdevfreq->time_last_update = now;
}
static int panfrost_devfreq_target(struct device *dev, unsigned long *freq,
@@ -47,30 +47,31 @@ static int panfrost_devfreq_target(struct device *dev, unsigned long *freq,
return 0;
}
-static void panfrost_devfreq_reset(struct panfrost_device *pfdev)
+static void panfrost_devfreq_reset(struct panfrost_devfreq *pfdevfreq)
{
- pfdev->devfreq.busy_time = 0;
- pfdev->devfreq.idle_time = 0;
- pfdev->devfreq.time_last_update = ktime_get();
+ pfdevfreq->busy_time = 0;
+ pfdevfreq->idle_time = 0;
+ pfdevfreq->time_last_update = ktime_get();
}
static int panfrost_devfreq_get_dev_status(struct device *dev,
struct devfreq_dev_status *status)
{
struct panfrost_device *pfdev = dev_get_drvdata(dev);
+ struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;
- panfrost_devfreq_update_utilization(pfdev);
+ panfrost_devfreq_update_utilization(pfdevfreq);
status->current_frequency = clk_get_rate(pfdev->clock);
- status->total_time = ktime_to_ns(ktime_add(pfdev->devfreq.busy_time,
- pfdev->devfreq.idle_time));
+ status->total_time = ktime_to_ns(ktime_add(pfdevfreq->busy_time,
+ pfdevfreq->idle_time));
- status->busy_time = ktime_to_ns(pfdev->devfreq.busy_time);
+ status->busy_time = ktime_to_ns(pfdevfreq->busy_time);
- panfrost_devfreq_reset(pfdev);
+ panfrost_devfreq_reset(pfdevfreq);
- dev_dbg(pfdev->dev, "busy %lu total %lu %lu %% freq %lu MHz\n", status->busy_time,
- status->total_time,
+ dev_dbg(pfdev->dev, "busy %lu total %lu %lu %% freq %lu MHz\n",
+ status->busy_time, status->total_time,
status->busy_time / (status->total_time / 100),
status->current_frequency / 1000 / 1000);
@@ -91,6 +92,7 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
struct device *dev = &pfdev->pdev->dev;
struct devfreq *devfreq;
struct thermal_cooling_device *cooling;
+ struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;
ret = dev_pm_opp_of_add_table(dev);
if (ret == -ENODEV) /* Optional, continue without devfreq */
@@ -98,7 +100,7 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
else if (ret)
return ret;
- panfrost_devfreq_reset(pfdev);
+ panfrost_devfreq_reset(pfdevfreq);
cur_freq = clk_get_rate(pfdev->clock);
@@ -116,53 +118,59 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
dev_pm_opp_of_remove_table(dev);
return PTR_ERR(devfreq);
}
- pfdev->devfreq.devfreq = devfreq;
+ pfdevfreq->devfreq = devfreq;
cooling = of_devfreq_cooling_register(dev->of_node, devfreq);
if (IS_ERR(cooling))
DRM_DEV_INFO(dev, "Failed to register cooling device\n");
else
- pfdev->devfreq.cooling = cooling;
+ pfdevfreq->cooling = cooling;
return 0;
}
void panfrost_devfreq_fini(struct panfrost_device *pfdev)
{
- if (pfdev->devfreq.cooling)
- devfreq_cooling_unregister(pfdev->devfreq.cooling);
+ struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;
+
+ if (pfdevfreq->cooling)
+ devfreq_cooling_unregister(pfdevfreq->cooling);
dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
}
void panfrost_devfreq_resume(struct panfrost_device *pfdev)
{
- if (!pfdev->devfreq.devfreq)
+ struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;
+
+ if (!pfdevfreq->devfreq)
return;
- panfrost_devfreq_reset(pfdev);
+ panfrost_devfreq_reset(pfdevfreq);
- devfreq_resume_device(pfdev->devfreq.devfreq);
+ devfreq_resume_device(pfdevfreq->devfreq);
}
void panfrost_devfreq_suspend(struct panfrost_device *pfdev)
{
- if (!pfdev->devfreq.devfreq)
+ struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;
+
+ if (!pfdevfreq->devfreq)
return;
- devfreq_suspend_device(pfdev->devfreq.devfreq);
+ devfreq_suspend_device(pfdevfreq->devfreq);
}
-void panfrost_devfreq_record_busy(struct panfrost_device *pfdev)
+void panfrost_devfreq_record_busy(struct panfrost_devfreq *pfdevfreq)
{
- panfrost_devfreq_update_utilization(pfdev);
- atomic_inc(&pfdev->devfreq.busy_count);
+ panfrost_devfreq_update_utilization(pfdevfreq);
+ atomic_inc(&pfdevfreq->busy_count);
}
-void panfrost_devfreq_record_idle(struct panfrost_device *pfdev)
+void panfrost_devfreq_record_idle(struct panfrost_devfreq *pfdevfreq)
{
int count;
- panfrost_devfreq_update_utilization(pfdev);
- count = atomic_dec_if_positive(&pfdev->devfreq.busy_count);
+ panfrost_devfreq_update_utilization(pfdevfreq);
+ count = atomic_dec_if_positive(&pfdevfreq->busy_count);
WARN_ON(count < 0);
}
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.h b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
index 0611beffc8d0..0697f8d5aa34 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.h
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
@@ -4,13 +4,29 @@
#ifndef __PANFROST_DEVFREQ_H__
#define __PANFROST_DEVFREQ_H__
+#include <linux/ktime.h>
+
+struct devfreq;
+struct thermal_cooling_device;
+
+struct panfrost_device;
+
+struct panfrost_devfreq {
+ struct devfreq *devfreq;
+ struct thermal_cooling_device *cooling;
+ ktime_t busy_time;
+ ktime_t idle_time;
+ ktime_t time_last_update;
+ atomic_t busy_count;
+};
+
int panfrost_devfreq_init(struct panfrost_device *pfdev);
void panfrost_devfreq_fini(struct panfrost_device *pfdev);
void panfrost_devfreq_resume(struct panfrost_device *pfdev);
void panfrost_devfreq_suspend(struct panfrost_device *pfdev);
-void panfrost_devfreq_record_busy(struct panfrost_device *pfdev);
-void panfrost_devfreq_record_idle(struct panfrost_device *pfdev);
+void panfrost_devfreq_record_busy(struct panfrost_devfreq *devfreq);
+void panfrost_devfreq_record_idle(struct panfrost_devfreq *devfreq);
#endif /* __PANFROST_DEVFREQ_H__ */
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h
index c30c719a8059..2efa59c9d1c5 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.h
+++ b/drivers/gpu/drm/panfrost/panfrost_device.h
@@ -13,6 +13,8 @@
#include <drm/drm_mm.h>
#include <drm/gpu_scheduler.h>
+#include "panfrost_devfreq.h"
+
struct panfrost_device;
struct panfrost_mmu;
struct panfrost_job_slot;
@@ -107,14 +109,7 @@ struct panfrost_device {
struct list_head shrinker_list;
struct shrinker shrinker;
- struct {
- struct devfreq *devfreq;
- struct thermal_cooling_device *cooling;
- ktime_t busy_time;
- ktime_t idle_time;
- ktime_t time_last_update;
- atomic_t busy_count;
- } devfreq;
+ struct panfrost_devfreq pfdevfreq;
};
struct panfrost_mmu {
diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
index 4c13dbae68fb..30e7b7196dab 100644
--- a/drivers/gpu/drm/panfrost/panfrost_job.c
+++ b/drivers/gpu/drm/panfrost/panfrost_job.c
@@ -145,7 +145,7 @@ static void panfrost_job_hw_submit(struct panfrost_job *job, int js)
u64 jc_head = job->jc;
int ret;
- panfrost_devfreq_record_busy(pfdev);
+ panfrost_devfreq_record_busy(&pfdev->pfdevfreq);
ret = pm_runtime_get_sync(pfdev->dev);
if (ret < 0)
@@ -410,7 +410,7 @@ static void panfrost_job_timedout(struct drm_sched_job *sched_job)
for (i = 0; i < NUM_JOB_SLOTS; i++) {
if (pfdev->jobs[i]) {
pm_runtime_put_noidle(pfdev->dev);
- panfrost_devfreq_record_idle(pfdev);
+ panfrost_devfreq_record_idle(&pfdev->pfdevfreq);
pfdev->jobs[i] = NULL;
}
}
@@ -478,7 +478,7 @@ static irqreturn_t panfrost_job_irq_handler(int irq, void *data)
pfdev->jobs[j] = NULL;
panfrost_mmu_as_put(pfdev, &job->file_priv->mmu);
- panfrost_devfreq_record_idle(pfdev);
+ panfrost_devfreq_record_idle(&pfdev->pfdevfreq);
dma_fence_signal_locked(job->done_fence);
pm_runtime_put_autosuspend(pfdev->dev);
From c0bae02328a32aabc9cd41f37ab93623ea2ea3e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= <peron.clem@gmail.com>
Date: Fri, 10 Jul 2020 11:54:00 +0200
Subject: [PATCH] drm/panfrost: use spinlock instead of atomic
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Convert busy_count to a simple int protected by spinlock.
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200710095409.407087-6-peron.clem@gmail.com
(cherry picked from commit ed85df3f60740bb4be23fbc2db283d59b361a834)
---
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 43 +++++++++++++++++++++--------
drivers/gpu/drm/panfrost/panfrost_devfreq.h | 9 +++++-
2 files changed, 40 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 962550363391..78753cfb59fb 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -12,16 +12,12 @@
static void panfrost_devfreq_update_utilization(struct panfrost_devfreq *pfdevfreq)
{
- ktime_t now;
- ktime_t last;
-
- if (!pfdevfreq->devfreq)
- return;
+ ktime_t now, last;
now = ktime_get();
last = pfdevfreq->time_last_update;
- if (atomic_read(&pfdevfreq->busy_count) > 0)
+ if (pfdevfreq->busy_count > 0)
pfdevfreq->busy_time += ktime_sub(now, last);
else
pfdevfreq->idle_time += ktime_sub(now, last);
@@ -59,10 +55,14 @@ static int panfrost_devfreq_get_dev_status(struct device *dev,
{
struct panfrost_device *pfdev = dev_get_drvdata(dev);
struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;
+ unsigned long irqflags;
+
+ status->current_frequency = clk_get_rate(pfdev->clock);
+
+ spin_lock_irqsave(&pfdevfreq->lock, irqflags);
panfrost_devfreq_update_utilization(pfdevfreq);
- status->current_frequency = clk_get_rate(pfdev->clock);
status->total_time = ktime_to_ns(ktime_add(pfdevfreq->busy_time,
pfdevfreq->idle_time));
@@ -70,6 +70,8 @@ static int panfrost_devfreq_get_dev_status(struct device *dev,
panfrost_devfreq_reset(pfdevfreq);
+ spin_unlock_irqrestore(&pfdevfreq->lock, irqflags);
+
dev_dbg(pfdev->dev, "busy %lu total %lu %lu %% freq %lu MHz\n",
status->busy_time, status->total_time,
status->busy_time / (status->total_time / 100),
@@ -100,6 +102,8 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
else if (ret)
return ret;
+ spin_lock_init(&pfdevfreq->lock);
+
panfrost_devfreq_reset(pfdevfreq);
cur_freq = clk_get_rate(pfdev->clock);
@@ -162,15 +166,32 @@ void panfrost_devfreq_suspend(struct panfrost_device *pfdev)
void panfrost_devfreq_record_busy(struct panfrost_devfreq *pfdevfreq)
{
+ unsigned long irqflags;
+
+ if (!pfdevfreq->devfreq)
+ return;
+
+ spin_lock_irqsave(&pfdevfreq->lock, irqflags);
+
panfrost_devfreq_update_utilization(pfdevfreq);
- atomic_inc(&pfdevfreq->busy_count);
+
+ pfdevfreq->busy_count++;
+
+ spin_unlock_irqrestore(&pfdevfreq->lock, irqflags);
}
void panfrost_devfreq_record_idle(struct panfrost_devfreq *pfdevfreq)
{
- int count;
+ unsigned long irqflags;
+
+ if (!pfdevfreq->devfreq)
+ return;
+
+ spin_lock_irqsave(&pfdevfreq->lock, irqflags);
panfrost_devfreq_update_utilization(pfdevfreq);
- count = atomic_dec_if_positive(&pfdevfreq->busy_count);
- WARN_ON(count < 0);
+
+ WARN_ON(--pfdevfreq->busy_count < 0);
+
+ spin_unlock_irqrestore(&pfdevfreq->lock, irqflags);
}
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.h b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
index 0697f8d5aa34..3392df1020be 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.h
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
@@ -4,6 +4,7 @@
#ifndef __PANFROST_DEVFREQ_H__
#define __PANFROST_DEVFREQ_H__
+#include <linux/spinlock.h>
#include <linux/ktime.h>
struct devfreq;
@@ -14,10 +15,16 @@ struct panfrost_device;
struct panfrost_devfreq {
struct devfreq *devfreq;
struct thermal_cooling_device *cooling;
+
ktime_t busy_time;
ktime_t idle_time;
ktime_t time_last_update;
- atomic_t busy_count;
+ int busy_count;
+ /*
+ * Protect busy_time, idle_time, time_last_update and busy_count
+ * because these can be updated concurrently between multiple jobs.
+ */
+ spinlock_t lock;
};
int panfrost_devfreq_init(struct panfrost_device *pfdev);
From f2c14c5a166e0d30ef41f6b4e4b8e7904dc931da Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= <peron.clem@gmail.com>
Date: Fri, 10 Jul 2020 11:54:01 +0200
Subject: [PATCH] drm/panfrost: properly handle error in probe
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Introduce a boolean to know if opp table has been added.
With this, we can call panfrost_devfreq_fini() in case of error
and release what has been initialised.
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200710095409.407087-7-peron.clem@gmail.com
(cherry picked from commit 81f2fbe62cb54b6cf3d91078c4d49451ba7b9877)
---
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 25 +++++++++++++++++++------
drivers/gpu/drm/panfrost/panfrost_devfreq.h | 1 +
2 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index 78753cfb59fb..d9007f44b772 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -101,6 +101,7 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
return 0;
else if (ret)
return ret;
+ pfdevfreq->opp_of_table_added = true;
spin_lock_init(&pfdevfreq->lock);
@@ -109,8 +110,10 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
cur_freq = clk_get_rate(pfdev->clock);
opp = devfreq_recommended_opp(dev, &cur_freq, 0);
- if (IS_ERR(opp))
- return PTR_ERR(opp);
+ if (IS_ERR(opp)) {
+ ret = PTR_ERR(opp);
+ goto err_fini;
+ }
panfrost_devfreq_profile.initial_freq = cur_freq;
dev_pm_opp_put(opp);
@@ -119,8 +122,8 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
DEVFREQ_GOV_SIMPLE_ONDEMAND, NULL);
if (IS_ERR(devfreq)) {
DRM_DEV_ERROR(dev, "Couldn't initialize GPU devfreq\n");
- dev_pm_opp_of_remove_table(dev);
- return PTR_ERR(devfreq);
+ ret = PTR_ERR(devfreq);
+ goto err_fini;
}
pfdevfreq->devfreq = devfreq;
@@ -131,15 +134,25 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
pfdevfreq->cooling = cooling;
return 0;
+
+err_fini:
+ panfrost_devfreq_fini(pfdev);
+ return ret;
}
void panfrost_devfreq_fini(struct panfrost_device *pfdev)
{
struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;
- if (pfdevfreq->cooling)
+ if (pfdevfreq->cooling) {
devfreq_cooling_unregister(pfdevfreq->cooling);
- dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
+ pfdevfreq->cooling = NULL;
+ }
+
+ if (pfdevfreq->opp_of_table_added) {
+ dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
+ pfdevfreq->opp_of_table_added = false;
+ }
}
void panfrost_devfreq_resume(struct panfrost_device *pfdev)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.h b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
index 3392df1020be..210269944687 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.h
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
@@ -15,6 +15,7 @@ struct panfrost_device;
struct panfrost_devfreq {
struct devfreq *devfreq;
struct thermal_cooling_device *cooling;
+ bool opp_of_table_added;
ktime_t busy_time;
ktime_t idle_time;
From 6d5816fcaa6621b0f7bb9c07bdc4a74696b0d4f6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= <peron.clem@gmail.com>
Date: Fri, 10 Jul 2020 11:54:04 +0200
Subject: [PATCH] drm/panfrost: dynamically alloc regulators
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We will later introduce regulators managed by OPP.
Only alloc regulators when it's needed. This also help use
to release the regulators only when they are allocated.
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200710095409.407087-10-peron.clem@gmail.com
(cherry picked from commit 512f21227fd3d2dbe7aad57a995b9732229c9b56)
---
drivers/gpu/drm/panfrost/panfrost_device.c | 14 +++++++++-----
drivers/gpu/drm/panfrost/panfrost_device.h | 3 +--
2 files changed, 10 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.c b/drivers/gpu/drm/panfrost/panfrost_device.c
index 36b5c8fea3eb..f1474b961def 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.c
+++ b/drivers/gpu/drm/panfrost/panfrost_device.c
@@ -90,9 +90,11 @@ static int panfrost_regulator_init(struct panfrost_device *pfdev)
{
int ret, i;
- if (WARN(pfdev->comp->num_supplies > ARRAY_SIZE(pfdev->regulators),
- "Too many supplies in compatible structure.\n"))
- return -EINVAL;
+ pfdev->regulators = devm_kcalloc(pfdev->dev, pfdev->comp->num_supplies,
+ sizeof(*pfdev->regulators),
+ GFP_KERNEL);
+ if (!pfdev->regulators)
+ return -ENOMEM;
for (i = 0; i < pfdev->comp->num_supplies; i++)
pfdev->regulators[i].supply = pfdev->comp->supply_names[i];
@@ -119,8 +121,10 @@ static int panfrost_regulator_init(struct panfrost_device *pfdev)
static void panfrost_regulator_fini(struct panfrost_device *pfdev)
{
- regulator_bulk_disable(pfdev->comp->num_supplies,
- pfdev->regulators);
+ if (!pfdev->regulators)
+ return;
+
+ regulator_bulk_disable(pfdev->comp->num_supplies, pfdev->regulators);
}
static void panfrost_pm_domain_fini(struct panfrost_device *pfdev)
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h
index 2efa59c9d1c5..953f7536a773 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.h
+++ b/drivers/gpu/drm/panfrost/panfrost_device.h
@@ -22,7 +22,6 @@ struct panfrost_job;
struct panfrost_perfcnt;
#define NUM_JOB_SLOTS 3
-#define MAX_REGULATORS 2
#define MAX_PM_DOMAINS 3
struct panfrost_features {
@@ -81,7 +80,7 @@ struct panfrost_device {
void __iomem *iomem;
struct clk *clock;
struct clk *bus_clock;
- struct regulator_bulk_data regulators[MAX_REGULATORS];
+ struct regulator_bulk_data *regulators;
struct reset_control *rstc;
/* pm_domains for devices with more than one. */
struct device *pm_domain_devs[MAX_PM_DOMAINS];
From 132fdf3d6a3bb089fa4e7aab7306d98dfeff3273 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= <peron.clem@gmail.com>
Date: Fri, 10 Jul 2020 11:54:05 +0200
Subject: [PATCH] drm/panfrost: add regulators to devfreq
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Some OPP tables specify voltage for each frequency. Devfreq can
handle these regulators but they should be get only 1 time to avoid
issue and know who is in charge.
If OPP table is probe don't init regulator.
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200710095409.407087-11-peron.clem@gmail.com
(cherry picked from commit fd587ff01d59554144e2fd20f4113638a45c7c4e)
---
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 29 +++++++++++++++++++++++++----
drivers/gpu/drm/panfrost/panfrost_devfreq.h | 2 ++
drivers/gpu/drm/panfrost/panfrost_device.c | 9 ++++++---
3 files changed, 33 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index d9007f44b772..8ab025d0035f 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -93,14 +93,30 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
unsigned long cur_freq;
struct device *dev = &pfdev->pdev->dev;
struct devfreq *devfreq;
+ struct opp_table *opp_table;
struct thermal_cooling_device *cooling;
struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;
+ opp_table = dev_pm_opp_set_regulators(dev, pfdev->comp->supply_names,
+ pfdev->comp->num_supplies);
+ if (IS_ERR(opp_table)) {
+ ret = PTR_ERR(opp_table);
+ /* Continue if the optional regulator is missing */
+ if (ret != -ENODEV) {
+ DRM_DEV_ERROR(dev, "Couldn't set OPP regulators\n");
+ goto err_fini;
+ }
+ } else {
+ pfdevfreq->regulators_opp_table = opp_table;
+ }
+
ret = dev_pm_opp_of_add_table(dev);
- if (ret == -ENODEV) /* Optional, continue without devfreq */
- return 0;
- else if (ret)
- return ret;
+ if (ret) {
+ /* Optional, continue without devfreq */
+ if (ret == -ENODEV)
+ ret = 0;
+ goto err_fini;
+ }
pfdevfreq->opp_of_table_added = true;
spin_lock_init(&pfdevfreq->lock);
@@ -153,6 +169,11 @@ void panfrost_devfreq_fini(struct panfrost_device *pfdev)
dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
pfdevfreq->opp_of_table_added = false;
}
+
+ if (pfdevfreq->regulators_opp_table) {
+ dev_pm_opp_put_regulators(pfdevfreq->regulators_opp_table);
+ pfdevfreq->regulators_opp_table = NULL;
+ }
}
void panfrost_devfreq_resume(struct panfrost_device *pfdev)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.h b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
index 210269944687..db6ea48e21f9 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.h
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
@@ -8,12 +8,14 @@
#include <linux/ktime.h>
struct devfreq;
+struct opp_table;
struct thermal_cooling_device;
struct panfrost_device;
struct panfrost_devfreq {
struct devfreq *devfreq;
+ struct opp_table *regulators_opp_table;
struct thermal_cooling_device *cooling;
bool opp_of_table_added;
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.c b/drivers/gpu/drm/panfrost/panfrost_device.c
index f1474b961def..e6896733838a 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.c
+++ b/drivers/gpu/drm/panfrost/panfrost_device.c
@@ -225,9 +225,12 @@ int panfrost_device_init(struct panfrost_device *pfdev)
goto out_clk;
}
- err = panfrost_regulator_init(pfdev);
- if (err)
- goto out_devfreq;
+ /* OPP will handle regulators */
+ if (!pfdev->pfdevfreq.opp_of_table_added) {
+ err = panfrost_regulator_init(pfdev);
+ if (err)
+ goto out_devfreq;
+ }
err = panfrost_reset_init(pfdev);
if (err) {
From d54c64a7033c7d9a55ec3a455a93ccfa09ba9549 Mon Sep 17 00:00:00 2001
From: Antonio Borneo <antonio.borneo@st.com>
Date: Wed, 8 Jul 2020 16:08:36 +0200
Subject: [PATCH] drm/bridge/synopsys: dsi: allow LP commands in video mode
Current code only sends LP commands in command mode.
Allows sending LP commands also in video mode by setting the
proper flag in DSI_VID_MODE_CFG.
Signed-off-by: Antonio Borneo <antonio.borneo@st.com>
Tested-by: Philippe Cornu <philippe.cornu@st.com>
Reviewed-by: Philippe Cornu <philippe.cornu@st.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200708140836.32418-1-yannick.fertre@st.com
(cherry picked from commit 6188b06e0357b3bc3b91d0b67783681d34ff2b64)
---
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index d580b2aa4ce9..d41ce1de1067 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -89,6 +89,7 @@
#define VID_MODE_TYPE_NON_BURST_SYNC_EVENTS 0x1
#define VID_MODE_TYPE_BURST 0x2
#define VID_MODE_TYPE_MASK 0x3
+#define ENABLE_LOW_POWER_CMD BIT(15)
#define VID_MODE_VPG_ENABLE BIT(16)
#define VID_MODE_VPG_HORIZONTAL BIT(24)
@@ -367,6 +368,13 @@ static void dw_mipi_message_config(struct dw_mipi_dsi *dsi,
dsi_write(dsi, DSI_LPCLK_CTRL, lpm ? 0 : PHY_TXREQUESTCLKHS);
dsi_write(dsi, DSI_CMD_MODE_CFG, val);
+
+ val = dsi_read(dsi, DSI_VID_MODE_CFG);
+ if (lpm)
+ val |= ENABLE_LOW_POWER_CMD;
+ else
+ val &= ~ENABLE_LOW_POWER_CMD;
+ dsi_write(dsi, DSI_VID_MODE_CFG, val);
}
static int dw_mipi_dsi_gen_pkt_hdr_write(struct dw_mipi_dsi *dsi, u32 hdr_val)
From 071e4591b5ddac631fe65bd2e527d7ca28105c5b Mon Sep 17 00:00:00 2001
From: Antonio Borneo <antonio.borneo@st.com>
Date: Wed, 1 Jul 2020 16:31:31 +0200
Subject: [PATCH] drm/bridge/synopsys: dsi: allow sending longer LP commands
Current code does not properly computes the max length of LP
commands that can be send during H or V sync, and rely on static
values.
Limiting the max LP length to 4 byte during the V-sync is overly
conservative.
Relax the limit and allows longer LP commands (16 bytes) to be
sent during V-sync.
Signed-off-by: Antonio Borneo <antonio.borneo@st.com>
Tested-by: Philippe Cornu <philippe.cornu@st.com>
Reviewed-by: Philippe Cornu <philippe.cornu@st.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200701143131.841-1-yannick.fertre@st.com
(cherry picked from commit 9e025e80660fe35432c81e67d401109d8e7b0ff4)
---
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index d41ce1de1067..e9a0f42ff99f 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -361,6 +361,15 @@ static void dw_mipi_message_config(struct dw_mipi_dsi *dsi,
bool lpm = msg->flags & MIPI_DSI_MSG_USE_LPM;
u32 val = 0;
+ /*
+ * TODO dw drv improvements
+ * largest packet sizes during hfp or during vsa/vpb/vfp
+ * should be computed according to byte lane, lane number and only
+ * if sending lp cmds in high speed is enable (PHY_TXREQUESTCLKHS)
+ */
+ dsi_write(dsi, DSI_DPI_LP_CMD_TIM, OUTVACT_LPCMD_TIME(16)
+ | INVACT_LPCMD_TIME(4));
+
if (msg->flags & MIPI_DSI_MSG_REQ_ACK)
val |= ACK_RQST_EN;
if (lpm)
@@ -619,14 +628,6 @@ static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi,
dsi_write(dsi, DSI_DPI_VCID, DPI_VCID(dsi->channel));
dsi_write(dsi, DSI_DPI_COLOR_CODING, color);
dsi_write(dsi, DSI_DPI_CFG_POL, val);
- /*
- * TODO dw drv improvements
- * largest packet sizes during hfp or during vsa/vpb/vfp
- * should be computed according to byte lane, lane number and only
- * if sending lp cmds in high speed is enable (PHY_TXREQUESTCLKHS)
- */
- dsi_write(dsi, DSI_DPI_LP_CMD_TIM, OUTVACT_LPCMD_TIME(4)
- | INVACT_LPCMD_TIME(4));
}
static void dw_mipi_dsi_packet_handler_config(struct dw_mipi_dsi *dsi)
From b3ba2bd08c57aedc749e4f3e646b4b773147866b Mon Sep 17 00:00:00 2001
From: Angelo Ribeiro <Angelo.Ribeiro@synopsys.com>
Date: Mon, 6 Apr 2020 15:49:03 +0200
Subject: [PATCH] drm/bridge: dw-mipi-dsi.c: Add VPG runtime config through
debugfs
Add support for the video pattern generator (VPG) BER pattern mode and
configuration in runtime.
This enables using the debugfs interface to manipulate the VPG after
the pipeline is set.
Also, enables the usage of the VPG BER pattern.
Changes in v2:
- Added VID_MODE_VPG_MODE
- Solved incompatible return type on __get and __set
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Adrian Pop <pop.adrian61@gmail.com>
Signed-off-by: Angelo Ribeiro <angelo.ribeiro@synopsys.com>
Tested-by: Yannick Fertre <yannick.fertre@st.com>
Tested-by: Adrian Pop <pop.adrian61@gmail.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Cc: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Jose Abreu <jose.abreu@synopsys.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/a809feb7d7153a92e323416f744f1565e995da01.1586180592.git.angelo.ribeiro@synopsys.com
(cherry picked from commit e2435d69204c1f041e5742cac9af301021afa46f)
---
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 98 ++++++++++++++++++++++++---
1 file changed, 90 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index 8510a84c4c63..0b3825a4fbdb 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -91,6 +91,7 @@
#define VID_MODE_TYPE_MASK 0x3
#define ENABLE_LOW_POWER_CMD BIT(15)
#define VID_MODE_VPG_ENABLE BIT(16)
+#define VID_MODE_VPG_MODE BIT(20)
#define VID_MODE_VPG_HORIZONTAL BIT(24)
#define DSI_VID_PKT_SIZE 0x3c
@@ -221,6 +222,21 @@
#define PHY_STATUS_TIMEOUT_US 10000
#define CMD_PKT_STATUS_TIMEOUT_US 20000
+#ifdef CONFIG_DEBUG_FS
+#define VPG_DEFS(name, dsi) \
+ ((void __force *)&((*dsi).vpg_defs.name))
+
+#define REGISTER(name, mask, dsi) \
+ { #name, VPG_DEFS(name, dsi), mask, dsi }
+
+struct debugfs_entries {
+ const char *name;
+ bool *reg;
+ u32 mask;
+ struct dw_mipi_dsi *dsi;
+};
+#endif /* CONFIG_DEBUG_FS */
+
struct dw_mipi_dsi {
struct drm_bridge bridge;
struct mipi_dsi_host dsi_host;
@@ -238,9 +254,12 @@ struct dw_mipi_dsi {
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs;
-
- bool vpg;
- bool vpg_horizontal;
+ struct debugfs_entries *debugfs_vpg;
+ struct {
+ bool vpg;
+ bool vpg_horizontal;
+ bool vpg_ber_pattern;
+ } vpg_defs;
#endif /* CONFIG_DEBUG_FS */
struct dw_mipi_dsi *master; /* dual-dsi master ptr */
@@ -545,9 +564,11 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
#ifdef CONFIG_DEBUG_FS
- if (dsi->vpg) {
+ if (dsi->vpg_defs.vpg) {
val |= VID_MODE_VPG_ENABLE;
- val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL : 0;
+ val |= dsi->vpg_defs.vpg_horizontal ?
+ VID_MODE_VPG_HORIZONTAL : 0;
+ val |= dsi->vpg_defs.vpg_ber_pattern ? VID_MODE_VPG_MODE : 0;
}
#endif /* CONFIG_DEBUG_FS */
@@ -978,6 +999,68 @@ static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
#ifdef CONFIG_DEBUG_FS
+int dw_mipi_dsi_debugfs_write(void *data, u64 val)
+{
+ struct debugfs_entries *vpg = data;
+ struct dw_mipi_dsi *dsi;
+ u32 mode_cfg;
+
+ if (!vpg)
+ return -ENODEV;
+
+ dsi = vpg->dsi;
+
+ *vpg->reg = (bool)val;
+
+ mode_cfg = dsi_read(dsi, DSI_VID_MODE_CFG);
+
+ if (*vpg->reg)
+ mode_cfg |= vpg->mask;
+ else
+ mode_cfg &= ~vpg->mask;
+
+ dsi_write(dsi, DSI_VID_MODE_CFG, mode_cfg);
+
+ return 0;
+}
+
+int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
+{
+ struct debugfs_entries *vpg = data;
+
+ if (!vpg)
+ return -ENODEV;
+
+ *val = *vpg->reg;
+
+ return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, dw_mipi_dsi_debugfs_show,
+ dw_mipi_dsi_debugfs_write, "%llu\n");
+
+static void debugfs_create_files(void *data)
+{
+ struct dw_mipi_dsi *dsi = data;
+ struct debugfs_entries debugfs[] = {
+ REGISTER(vpg, VID_MODE_VPG_ENABLE, dsi),
+ REGISTER(vpg_horizontal, VID_MODE_VPG_HORIZONTAL, dsi),
+ REGISTER(vpg_ber_pattern, VID_MODE_VPG_MODE, dsi),
+ };
+ int i;
+
+ dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
+ if (!dsi->debugfs_vpg)
+ return;
+
+ memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
+
+ for (i = 0; i < ARRAY_SIZE(debugfs); i++)
+ debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
+ dsi->debugfs, &dsi->debugfs_vpg[i],
+ &fops_x32);
+}
+
static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
{
dsi->debugfs = debugfs_create_dir(dev_name(dsi->dev), NULL);
@@ -986,14 +1069,13 @@ static void dw_mipi_dsi_debugfs_init(struct dw_mipi_dsi *dsi)
return;
}
- debugfs_create_bool("vpg", 0660, dsi->debugfs, &dsi->vpg);
- debugfs_create_bool("vpg_horizontal", 0660, dsi->debugfs,
- &dsi->vpg_horizontal);
+ debugfs_create_files(dsi);
}
static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi)
{
debugfs_remove_recursive(dsi->debugfs);
+ kfree(dsi->debugfs_vpg);
}
#else
From b48c8b2c43459f3c3bf28ffdec42553844412a83 Mon Sep 17 00:00:00 2001
From: Neil Armstrong <narmstrong@baylibre.com>
Date: Mon, 7 Sep 2020 12:27:11 +0200
Subject: [PATCH] drm/bridge: dw-mipi-dsi: fix dw_mipi_dsi_debugfs_show/write
warnings
This fixes the following warnings while building in W=1 :
dw-mipi-dsi.c:1002:5: warning: no previous prototype for 'dw_mipi_dsi_debugfs_write' [-Wmissing-prototypes]
dw-mipi-dsi.c:1027:5: warning: no previous prototype for 'dw_mipi_dsi_debugfs_show' [-Wmissing-prototypes]
Fixes: e2435d69204c ("drm/bridge: dw-mipi-dsi.c: Add VPG runtime config through debugfs")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Angelo Ribeiro <angelo.ribeiro@synopsys.com>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20200907102711.23748-1-narmstrong@baylibre.com
(cherry picked from commit 25c4bcf9858e3e8752985fa0cda64a212ea328b7)
---
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index 0b3825a4fbdb..52f5c5a2ed64 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -999,7 +999,7 @@ static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = {
#ifdef CONFIG_DEBUG_FS
-int dw_mipi_dsi_debugfs_write(void *data, u64 val)
+static int dw_mipi_dsi_debugfs_write(void *data, u64 val)
{
struct debugfs_entries *vpg = data;
struct dw_mipi_dsi *dsi;
@@ -1024,7 +1024,7 @@ int dw_mipi_dsi_debugfs_write(void *data, u64 val)
return 0;
}
-int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
+static int dw_mipi_dsi_debugfs_show(void *data, u64 *val)
{
struct debugfs_entries *vpg = data;
From 0765583a5df3824d6347f89088656d52f70d9de0 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Mon, 7 Sep 2020 13:24:25 +0200
Subject: [PATCH] drm: allow limiting the scatter list size.
Add drm_device argument to drm_prime_pages_to_sg(), so we can
call dma_max_mapping_size() to figure the segment size limit
and call into __sg_alloc_table_from_pages() with the correct
limit.
This fixes virtio-gpu with sev. Possibly it'll fix other bugs
too given that drm seems to totaly ignore segment size limits
so far ...
v2: place max_segment in drm driver not gem object.
v3: move max_segment next to the other gem fields.
v4: just use dma_max_mapping_size().
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20200907112425.15610-2-kraxel@redhat.com
(cherry picked from commit 707d561f77b5e2a6f90c9786bee44ee7a8dedc7e)
---
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 3 ++-
drivers/gpu/drm/drm_gem_shmem_helper.c | 2 +-
drivers/gpu/drm/drm_prime.c | 13 ++++++++++---
drivers/gpu/drm/etnaviv/etnaviv_gem.c | 3 ++-
drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c | 2 +-
drivers/gpu/drm/msm/msm_gem.c | 2 +-
drivers/gpu/drm/msm/msm_gem_prime.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_prime.c | 2 +-
drivers/gpu/drm/radeon/radeon_prime.c | 2 +-
drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 5 +++--
drivers/gpu/drm/tegra/gem.c | 2 +-
drivers/gpu/drm/vgem/vgem_drv.c | 2 +-
drivers/gpu/drm/xen/xen_drm_front_gem.c | 3 ++-
include/drm/drm_prime.h | 3 ++-
14 files changed, 29 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
index 519ce4427fce..d7050ab95946 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
@@ -302,7 +302,8 @@ static struct sg_table *amdgpu_dma_buf_map(struct dma_buf_attachment *attach,
switch (bo->tbo.mem.mem_type) {
case TTM_PL_TT:
- sgt = drm_prime_pages_to_sg(bo->tbo.ttm->pages,
+ sgt = drm_prime_pages_to_sg(obj->dev,
+ bo->tbo.ttm->pages,
bo->tbo.num_pages);
if (IS_ERR(sgt))
return sgt;
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index 4b7cfbac4daa..0a952f27c184 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -656,7 +656,7 @@ struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_object *obj)
WARN_ON(shmem->base.import_attach);
- return drm_prime_pages_to_sg(shmem->pages, obj->size >> PAGE_SHIFT);
+ return drm_prime_pages_to_sg(obj->dev, shmem->pages, obj->size >> PAGE_SHIFT);
}
EXPORT_SYMBOL_GPL(drm_gem_shmem_get_sg_table);
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 1693aa7c14b5..8a6a3c99b7d8 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -802,9 +802,11 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops = {
*
* This is useful for implementing &drm_gem_object_funcs.get_sg_table.
*/
-struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages)
+struct sg_table *drm_prime_pages_to_sg(struct drm_device *dev,
+ struct page **pages, unsigned int nr_pages)
{
struct sg_table *sg = NULL;
+ size_t max_segment = 0;
int ret;
sg = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
@@ -813,8 +815,13 @@ struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_page
goto out;
}
- ret = sg_alloc_table_from_pages(sg, pages, nr_pages, 0,
- nr_pages << PAGE_SHIFT, GFP_KERNEL);
+ if (dev)
+ max_segment = dma_max_mapping_size(dev->dev);
+ if (max_segment == 0 || max_segment > SCATTERLIST_MAX_SEGMENT)
+ max_segment = SCATTERLIST_MAX_SEGMENT;
+ ret = __sg_alloc_table_from_pages(sg, pages, nr_pages, 0,
+ nr_pages << PAGE_SHIFT,
+ max_segment, GFP_KERNEL);
if (ret)
goto out;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
index f06e19e7be04..ea19f1d27275 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -103,7 +103,8 @@ struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *etnaviv_obj)
int npages = etnaviv_obj->base.size >> PAGE_SHIFT;
struct sg_table *sgt;
- sgt = drm_prime_pages_to_sg(etnaviv_obj->pages, npages);
+ sgt = drm_prime_pages_to_sg(etnaviv_obj->base.dev,
+ etnaviv_obj->pages, npages);
if (IS_ERR(sgt)) {
dev_err(dev->dev, "failed to allocate sgt: %ld\n",
PTR_ERR(sgt));
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
index 6d9e5c3c4dd5..4aa3426a9ba4 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
@@ -19,7 +19,7 @@ struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj)
if (WARN_ON(!etnaviv_obj->pages)) /* should have already pinned! */
return ERR_PTR(-EINVAL);
- return drm_prime_pages_to_sg(etnaviv_obj->pages, npages);
+ return drm_prime_pages_to_sg(obj->dev, etnaviv_obj->pages, npages);
}
void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj)
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index b2f49152b4d4..b4553caaa196 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -126,7 +126,7 @@ static struct page **get_pages(struct drm_gem_object *obj)
msm_obj->pages = p;
- msm_obj->sgt = drm_prime_pages_to_sg(p, npages);
+ msm_obj->sgt = drm_prime_pages_to_sg(obj->dev, p, npages);
if (IS_ERR(msm_obj->sgt)) {
void *ptr = ERR_CAST(msm_obj->sgt);
diff --git a/drivers/gpu/drm/msm/msm_gem_prime.c b/drivers/gpu/drm/msm/msm_gem_prime.c
index d7c8948427fe..515ef80816a0 100644
--- a/drivers/gpu/drm/msm/msm_gem_prime.c
+++ b/drivers/gpu/drm/msm/msm_gem_prime.c
@@ -19,7 +19,7 @@ struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj)
if (WARN_ON(!msm_obj->pages)) /* should have already pinned! */
return NULL;
- return drm_prime_pages_to_sg(msm_obj->pages, npages);
+ return drm_prime_pages_to_sg(obj->dev, msm_obj->pages, npages);
}
void *msm_gem_prime_vmap(struct drm_gem_object *obj)
diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c
index bae6a3eccee0..7766b810653f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_prime.c
+++ b/drivers/gpu/drm/nouveau/nouveau_prime.c
@@ -32,7 +32,7 @@ struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj)
struct nouveau_bo *nvbo = nouveau_gem_object(obj);
int npages = nvbo->bo.num_pages;
- return drm_prime_pages_to_sg(nvbo->bo.ttm->pages, npages);
+ return drm_prime_pages_to_sg(obj->dev, nvbo->bo.ttm->pages, npages);
}
void *nouveau_gem_prime_vmap(struct drm_gem_object *obj)
diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c
index b906e8fbd5f3..ea4c900e7c41 100644
--- a/drivers/gpu/drm/radeon/radeon_prime.c
+++ b/drivers/gpu/drm/radeon/radeon_prime.c
@@ -36,7 +36,7 @@ struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj)
struct radeon_bo *bo = gem_to_radeon_bo(obj);
int npages = bo->tbo.num_pages;
- return drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages);
+ return drm_prime_pages_to_sg(obj->dev, bo->tbo.ttm->pages, npages);
}
void *radeon_gem_prime_vmap(struct drm_gem_object *obj)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index b9275ba7c5a5..0055d86576f7 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -85,7 +85,8 @@ static int rockchip_gem_get_pages(struct rockchip_gem_object *rk_obj)
rk_obj->num_pages = rk_obj->base.size >> PAGE_SHIFT;
- rk_obj->sgt = drm_prime_pages_to_sg(rk_obj->pages, rk_obj->num_pages);
+ rk_obj->sgt = drm_prime_pages_to_sg(rk_obj->base.dev,
+ rk_obj->pages, rk_obj->num_pages);
if (IS_ERR(rk_obj->sgt)) {
ret = PTR_ERR(rk_obj->sgt);
goto err_put_pages;
@@ -442,7 +443,7 @@ struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj)
int ret;
if (rk_obj->pages)
- return drm_prime_pages_to_sg(rk_obj->pages, rk_obj->num_pages);
+ return drm_prime_pages_to_sg(obj->dev, rk_obj->pages, rk_obj->num_pages);
sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
if (!sgt)
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
index 723df142a981..47e2935b8c68 100644
--- a/drivers/gpu/drm/tegra/gem.c
+++ b/drivers/gpu/drm/tegra/gem.c
@@ -284,7 +284,7 @@ static int tegra_bo_get_pages(struct drm_device *drm, struct tegra_bo *bo)
bo->num_pages = bo->gem.size >> PAGE_SHIFT;
- bo->sgt = drm_prime_pages_to_sg(bo->pages, bo->num_pages);
+ bo->sgt = drm_prime_pages_to_sg(bo->gem.dev, bo->pages, bo->num_pages);
if (IS_ERR(bo->sgt)) {
err = PTR_ERR(bo->sgt);
goto put_pages;
diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
index a775feda1cc7..4f0fd71d2da1 100644
--- a/drivers/gpu/drm/vgem/vgem_drv.c
+++ b/drivers/gpu/drm/vgem/vgem_drv.c
@@ -321,7 +321,7 @@ static struct sg_table *vgem_prime_get_sg_table(struct drm_gem_object *obj)
{
struct drm_vgem_gem_object *bo = to_vgem_bo(obj);
- return drm_prime_pages_to_sg(bo->pages, bo->base.size >> PAGE_SHIFT);
+ return drm_prime_pages_to_sg(obj->dev, bo->pages, bo->base.size >> PAGE_SHIFT);
}
static struct drm_gem_object* vgem_prime_import(struct drm_device *dev,
diff --git a/drivers/gpu/drm/xen/xen_drm_front_gem.c b/drivers/gpu/drm/xen/xen_drm_front_gem.c
index 534daf37c97e..a8aefaa38bd3 100644
--- a/drivers/gpu/drm/xen/xen_drm_front_gem.c
+++ b/drivers/gpu/drm/xen/xen_drm_front_gem.c
@@ -180,7 +180,8 @@ struct sg_table *xen_drm_front_gem_get_sg_table(struct drm_gem_object *gem_obj)
if (!xen_obj->pages)
return ERR_PTR(-ENOMEM);
- return drm_prime_pages_to_sg(xen_obj->pages, xen_obj->num_pages);
+ return drm_prime_pages_to_sg(gem_obj->dev,
+ xen_obj->pages, xen_obj->num_pages);
}
struct drm_gem_object *
diff --git a/include/drm/drm_prime.h b/include/drm/drm_prime.h
index 9af7422b44cf..bf141e74a1c2 100644
--- a/include/drm/drm_prime.h
+++ b/include/drm/drm_prime.h
@@ -88,7 +88,8 @@ void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr);
int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma);
-struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages);
+struct sg_table *drm_prime_pages_to_sg(struct drm_device *dev,
+ struct page **pages, unsigned int nr_pages);
struct dma_buf *drm_gem_prime_export(struct drm_gem_object *obj,
int flags);
From 0839a46485ed6cca60e13a706b8501267bd23bfa Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Fri, 8 May 2020 16:04:44 +0200
Subject: [PATCH] drm: prime: add common helper to check scatterlist contiguity
It is a common operation done by DRM drivers to check the contiguity
of the DMA-mapped buffer described by a scatterlist in the
sg_table object. Let's add a common helper for this operation.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
(cherry picked from commit d46e7ae24b81533d21edfa90914d27efa0c5f85d)
---
drivers/gpu/drm/drm_gem_cma_helper.c | 23 +++--------------------
drivers/gpu/drm/drm_prime.c | 31 +++++++++++++++++++++++++++++++
include/drm/drm_prime.h | 2 ++
3 files changed, 36 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c
index 822edeadbab3..59b9ca207b42 100644
--- a/drivers/gpu/drm/drm_gem_cma_helper.c
+++ b/drivers/gpu/drm/drm_gem_cma_helper.c
@@ -471,26 +471,9 @@ drm_gem_cma_prime_import_sg_table(struct drm_device *dev,
{
struct drm_gem_cma_object *cma_obj;
- if (sgt->nents != 1) {
- /* check if the entries in the sg_table are contiguous */
- dma_addr_t next_addr = sg_dma_address(sgt->sgl);
- struct scatterlist *s;
- unsigned int i;
-
- for_each_sg(sgt->sgl, s, sgt->nents, i) {
- /*
- * sg_dma_address(s) is only valid for entries
- * that have sg_dma_len(s) != 0
- */
- if (!sg_dma_len(s))
- continue;
-
- if (sg_dma_address(s) != next_addr)
- return ERR_PTR(-EINVAL);
-
- next_addr = sg_dma_address(s) + sg_dma_len(s);
- }
- }
+ /* check if the entries in the sg_table are contiguous */
+ if (drm_prime_get_contiguous_size(sgt) < attach->dmabuf->size)
+ return ERR_PTR(-EINVAL);
/* Create a CMA GEM buffer. */
cma_obj = __drm_gem_cma_create(dev, attach->dmabuf->size);
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 8a6a3c99b7d8..5a134c63856f 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -832,6 +832,37 @@ struct sg_table *drm_prime_pages_to_sg(struct drm_device *dev,
}
EXPORT_SYMBOL(drm_prime_pages_to_sg);
+/**
+ * drm_prime_get_contiguous_size - returns the contiguous size of the buffer
+ * @sgt: sg_table describing the buffer to check
+ *
+ * This helper calculates the contiguous size in the DMA address space
+ * of the the buffer described by the provided sg_table.
+ *
+ * This is useful for implementing
+ * &drm_gem_object_funcs.gem_prime_import_sg_table.
+ */
+unsigned long drm_prime_get_contiguous_size(struct sg_table *sgt)
+{
+ dma_addr_t expected = sg_dma_address(sgt->sgl);
+ struct scatterlist *sg;
+ unsigned long size = 0;
+ int i;
+
+ for_each_sgtable_dma_sg(sgt, sg, i) {
+ unsigned int len = sg_dma_len(sg);
+
+ if (!len)
+ break;
+ if (sg_dma_address(sg) != expected)
+ break;
+ expected += len;
+ size += len;
+ }
+ return size;
+}
+EXPORT_SYMBOL(drm_prime_get_contiguous_size);
+
/**
* drm_gem_prime_export - helper library implementation of the export callback
* @obj: GEM object to export
diff --git a/include/drm/drm_prime.h b/include/drm/drm_prime.h
index bf141e74a1c2..0f69f9fbf12c 100644
--- a/include/drm/drm_prime.h
+++ b/include/drm/drm_prime.h
@@ -93,6 +93,8 @@ struct sg_table *drm_prime_pages_to_sg(struct drm_device *dev,
struct dma_buf *drm_gem_prime_export(struct drm_gem_object *obj,
int flags);
+unsigned long drm_prime_get_contiguous_size(struct sg_table *sgt);
+
/* helper functions for importing */
struct drm_gem_object *drm_gem_prime_import_dev(struct drm_device *dev,
struct dma_buf *dma_buf,
From 4e60d2c4b502537362bae39f3d15b56c41a20648 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Fri, 8 May 2020 16:05:14 +0200
Subject: [PATCH] drm: prime: use sgtable iterators in
drm_prime_sg_to_page_addr_arrays()
Replace the current hand-crafted code for extracting pages and DMA
addresses from the given scatterlist by the much more robust
code based on the generic scatterlist iterators and recently
introduced sg_table-based wrappers. The resulting code is simple and
easy to understand, so the comment describing the old code is no
longer needed.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
(cherry picked from commit 0552daac2d18fc92c71c94492476b8eb521227e9)
---
drivers/gpu/drm/drm_prime.c | 49 ++++++++++++++-------------------------------
1 file changed, 15 insertions(+), 34 deletions(-)
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 5a134c63856f..9d2643f2d9e7 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -997,45 +997,26 @@ EXPORT_SYMBOL(drm_gem_prime_import);
int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
dma_addr_t *addrs, int max_entries)
{
- unsigned count;
- struct scatterlist *sg;
- struct page *page;
- u32 page_len, page_index;
- dma_addr_t addr;
- u32 dma_len, dma_index;
-
- /*
- * Scatterlist elements contains both pages and DMA addresses, but
- * one shoud not assume 1:1 relation between them. The sg->length is
- * the size of the physical memory chunk described by the sg->page,
- * while sg_dma_len(sg) is the size of the DMA (IO virtual) chunk
- * described by the sg_dma_address(sg).
- */
- page_index = 0;
- dma_index = 0;
- for_each_sg(sgt->sgl, sg, sgt->nents, count) {
- page_len = sg->length;
- page = sg_page(sg);
- dma_len = sg_dma_len(sg);
- addr = sg_dma_address(sg);
-
- while (pages && page_len > 0) {
- if (WARN_ON(page_index >= max_entries))
+ struct sg_dma_page_iter dma_iter;
+ struct sg_page_iter page_iter;
+ struct page **p = pages;
+ dma_addr_t *a = addrs;
+
+ if (pages) {
+ for_each_sgtable_page(sgt, &page_iter, 0) {
+ if (WARN_ON(p - pages >= max_entries))
return -1;
- pages[page_index] = page;
- page++;
- page_len -= PAGE_SIZE;
- page_index++;
+ *p++ = sg_page_iter_page(&page_iter);
}
- while (addrs && dma_len > 0) {
- if (WARN_ON(dma_index >= max_entries))
+ }
+ if (addrs) {
+ for_each_sgtable_dma_page(sgt, &dma_iter, 0) {
+ if (WARN_ON(a - addrs >= max_entries))
return -1;
- addrs[dma_index] = addr;
- addr += PAGE_SIZE;
- dma_len -= PAGE_SIZE;
- dma_index++;
+ *a++ = sg_page_iter_dma_address(&dma_iter);
}
}
+
return 0;
}
EXPORT_SYMBOL(drm_prime_sg_to_page_addr_arrays);
From ec3929e32f4ca8176edcb0d5ba72ea2051ccfd11 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Mon, 11 May 2020 12:27:54 +0200
Subject: [PATCH] drm: core: fix common struct sg_table related issues
The Documentation/DMA-API-HOWTO.txt states that the dma_map_sg() function
returns the number of the created entries in the DMA address space.
However the subsequent calls to the dma_sync_sg_for_{device,cpu}() and
dma_unmap_sg must be called with the original number of the entries
passed to the dma_map_sg().
struct sg_table is a common structure used for describing a non-contiguous
memory buffer, used commonly in the DRM and graphics subsystems. It
consists of a scatterlist with memory pages and DMA addresses (sgl entry),
as well as the number of scatterlist entries: CPU pages (orig_nents entry)
and DMA mapped pages (nents entry).
It turned out that it was a common mistake to misuse nents and orig_nents
entries, calling DMA-mapping functions with a wrong number of entries or
ignoring the number of mapped entries returned by the dma_map_sg()
function.
To avoid such issues, lets use a common dma-mapping wrappers operating
directly on the struct sg_table objects and use scatterlist page
iterators where possible. This, almost always, hides references to the
nents and orig_nents entries, making the code robust, easier to follow
and copy/paste safe.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
(cherry picked from commit 6c6fa39ca958d5313ff90d3e6c3064e0043c1da3)
---
drivers/gpu/drm/drm_cache.c | 2 +-
drivers/gpu/drm/drm_gem_shmem_helper.c | 14 +++++++++-----
drivers/gpu/drm/drm_prime.c | 11 ++++++-----
3 files changed, 16 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/drm_cache.c b/drivers/gpu/drm/drm_cache.c
index 03e01b000f7a..0fe3c496002a 100644
--- a/drivers/gpu/drm/drm_cache.c
+++ b/drivers/gpu/drm/drm_cache.c
@@ -127,7 +127,7 @@ drm_clflush_sg(struct sg_table *st)
struct sg_page_iter sg_iter;
mb(); /*CLFLUSH is ordered only by using memory barriers*/
- for_each_sg_page(st->sgl, &sg_iter, st->nents, 0)
+ for_each_sgtable_page(st, &sg_iter, 0)
drm_clflush_page(sg_page_iter_page(&sg_iter));
mb(); /*Make sure that all cache line entry is flushed*/
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index 0a952f27c184..d77c9f8ff26c 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -126,8 +126,8 @@ void drm_gem_shmem_free_object(struct drm_gem_object *obj)
drm_prime_gem_destroy(obj, shmem->sgt);
} else {
if (shmem->sgt) {
- dma_unmap_sg(obj->dev->dev, shmem->sgt->sgl,
- shmem->sgt->nents, DMA_BIDIRECTIONAL);
+ dma_unmap_sgtable(obj->dev->dev, shmem->sgt,
+ DMA_BIDIRECTIONAL, 0);
sg_free_table(shmem->sgt);
kfree(shmem->sgt);
}
@@ -424,8 +424,7 @@ void drm_gem_shmem_purge_locked(struct drm_gem_object *obj)
WARN_ON(!drm_gem_shmem_is_purgeable(shmem));
- dma_unmap_sg(obj->dev->dev, shmem->sgt->sgl,
- shmem->sgt->nents, DMA_BIDIRECTIONAL);
+ dma_unmap_sgtable(obj->dev->dev, shmem->sgt, DMA_BIDIRECTIONAL, 0);
sg_free_table(shmem->sgt);
kfree(shmem->sgt);
shmem->sgt = NULL;
@@ -697,12 +696,17 @@ struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_object *obj)
goto err_put_pages;
}
/* Map the pages for use by the h/w. */
- dma_map_sg(obj->dev->dev, sgt->sgl, sgt->nents, DMA_BIDIRECTIONAL);
+ ret = dma_map_sgtable(obj->dev->dev, sgt, DMA_BIDIRECTIONAL, 0);
+ if (ret)
+ goto err_free_sgt;
shmem->sgt = sgt;
return sgt;
+err_free_sgt:
+ sg_free_table(sgt);
+ kfree(sgt);
err_put_pages:
drm_gem_shmem_put_pages(shmem);
return ERR_PTR(ret);
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 9d2643f2d9e7..11fe9ff76fd5 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -617,6 +617,7 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
{
struct drm_gem_object *obj = attach->dmabuf->priv;
struct sg_table *sgt;
+ int ret;
if (WARN_ON(dir == DMA_NONE))
return ERR_PTR(-EINVAL);
@@ -626,11 +627,12 @@ struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
else
sgt = obj->dev->driver->gem_prime_get_sg_table(obj);
- if (!dma_map_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir,
- DMA_ATTR_SKIP_CPU_SYNC)) {
+ ret = dma_map_sgtable(attach->dev, sgt, dir,
+ DMA_ATTR_SKIP_CPU_SYNC);
+ if (ret) {
sg_free_table(sgt);
kfree(sgt);
- sgt = ERR_PTR(-ENOMEM);
+ sgt = ERR_PTR(ret);
}
return sgt;
@@ -652,8 +654,7 @@ void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
if (!sgt)
return;
- dma_unmap_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir,
- DMA_ATTR_SKIP_CPU_SYNC);
+ dma_unmap_sgtable(attach->dev, sgt, dir, DMA_ATTR_SKIP_CPU_SYNC);
sg_free_table(sgt);
kfree(sgt);
}
From 03fcee5f1d9c78e00f2000cf87843020c5fb1634 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Thu, 30 Apr 2020 14:02:47 +0200
Subject: [PATCH] drm: rockchip: use common helper for a scatterlist contiguity
check
Use common helper for checking the contiguity of the imported dma-buf.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
(cherry picked from commit 6a8f15c62cd9235a3a4eb1c96e79131061310d57)
---
drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 19 +------------------
1 file changed, 1 insertion(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index 0055d86576f7..d1559146dcce 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -461,23 +461,6 @@ struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj)
return sgt;
}
-static unsigned long rockchip_sg_get_contiguous_size(struct sg_table *sgt,
- int count)
-{
- struct scatterlist *s;
- dma_addr_t expected = sg_dma_address(sgt->sgl);
- unsigned int i;
- unsigned long size = 0;
-
- for_each_sg(sgt->sgl, s, count, i) {
- if (sg_dma_address(s) != expected)
- break;
- expected = sg_dma_address(s) + sg_dma_len(s);
- size += sg_dma_len(s);
- }
- return size;
-}
-
static int
rockchip_gem_iommu_map_sg(struct drm_device *drm,
struct dma_buf_attachment *attach,
@@ -499,7 +482,7 @@ rockchip_gem_dma_map_sg(struct drm_device *drm,
if (!count)
return -EINVAL;
- if (rockchip_sg_get_contiguous_size(sg, count) < attach->dmabuf->size) {
+ if (drm_prime_get_contiguous_size(sg) < attach->dmabuf->size) {
DRM_ERROR("failed to map sg_table to contiguous linear address.\n");
dma_unmap_sg(drm->dev, sg->sgl, sg->nents,
DMA_BIDIRECTIONAL);
From 11f9a73528dc2bd14e6d7e54cb8df803478eef68 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Tue, 28 Apr 2020 13:10:01 +0200
Subject: [PATCH] drm: rockchip: fix common struct sg_table related issues
The Documentation/DMA-API-HOWTO.txt states that the dma_map_sg() function
returns the number of the created entries in the DMA address space.
However the subsequent calls to the dma_sync_sg_for_{device,cpu}() and
dma_unmap_sg must be called with the original number of the entries
passed to the dma_map_sg().
struct sg_table is a common structure used for describing a non-contiguous
memory buffer, used commonly in the DRM and graphics subsystems. It
consists of a scatterlist with memory pages and DMA addresses (sgl entry),
as well as the number of scatterlist entries: CPU pages (orig_nents entry)
and DMA mapped pages (nents entry).
It turned out that it was a common mistake to misuse nents and orig_nents
entries, calling DMA-mapping functions with a wrong number of entries or
ignoring the number of mapped entries returned by the dma_map_sg()
function.
To avoid such issues, lets use a common dma-mapping wrappers operating
directly on the struct sg_table objects and use scatterlist page
iterators where possible. This, almost always, hides references to the
nents and orig_nents entries, making the code robust, easier to follow
and copy/paste safe.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
(cherry picked from commit 82c245b592da791c63316e7a82d9b9d01552c0c5)
---
drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 23 ++++++++++-------------
1 file changed, 10 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index d1559146dcce..62e5d0970525 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -36,8 +36,8 @@ static int rockchip_gem_iommu_map(struct rockchip_gem_object *rk_obj)
rk_obj->dma_addr = rk_obj->mm.start;
- ret = iommu_map_sg(private->domain, rk_obj->dma_addr, rk_obj->sgt->sgl,
- rk_obj->sgt->nents, prot);
+ ret = iommu_map_sgtable(private->domain, rk_obj->dma_addr, rk_obj->sgt,
+ prot);
if (ret < rk_obj->base.size) {
DRM_ERROR("failed to map buffer: size=%zd request_size=%zd\n",
ret, rk_obj->base.size);
@@ -99,11 +99,10 @@ static int rockchip_gem_get_pages(struct rockchip_gem_object *rk_obj)
* TODO: Replace this by drm_clflush_sg() once it can be implemented
* without relying on symbols that are not exported.
*/
- for_each_sg(rk_obj->sgt->sgl, s, rk_obj->sgt->nents, i)
+ for_each_sgtable_sg(rk_obj->sgt, s, i)
sg_dma_address(s) = sg_phys(s);
- dma_sync_sg_for_device(drm->dev, rk_obj->sgt->sgl, rk_obj->sgt->nents,
- DMA_TO_DEVICE);
+ dma_sync_sgtable_for_device(drm->dev, rk_obj->sgt, DMA_TO_DEVICE);
return 0;
@@ -351,8 +350,8 @@ void rockchip_gem_free_object(struct drm_gem_object *obj)
if (private->domain) {
rockchip_gem_iommu_unmap(rk_obj);
} else {
- dma_unmap_sg(drm->dev, rk_obj->sgt->sgl,
- rk_obj->sgt->nents, DMA_BIDIRECTIONAL);
+ dma_unmap_sgtable(drm->dev, rk_obj->sgt,
+ DMA_BIDIRECTIONAL, 0);
}
drm_prime_gem_destroy(obj, rk_obj->sgt);
} else {
@@ -477,15 +476,13 @@ rockchip_gem_dma_map_sg(struct drm_device *drm,
struct sg_table *sg,
struct rockchip_gem_object *rk_obj)
{
- int count = dma_map_sg(drm->dev, sg->sgl, sg->nents,
- DMA_BIDIRECTIONAL);
- if (!count)
- return -EINVAL;
+ int err = dma_map_sgtable(drm->dev, sg, DMA_BIDIRECTIONAL, 0);
+ if (err)
+ return err;
if (drm_prime_get_contiguous_size(sg) < attach->dmabuf->size) {
DRM_ERROR("failed to map sg_table to contiguous linear address.\n");
- dma_unmap_sg(drm->dev, sg->sgl, sg->nents,
- DMA_BIDIRECTIONAL);
+ dma_unmap_sgtable(drm->dev, sg, DMA_BIDIRECTIONAL, 0);
return -EINVAL;
}
From 314b770980da1e7d968e8178194de70cbb44fd6c Mon Sep 17 00:00:00 2001
From: Robin Murphy <robin.murphy@arm.com>
Date: Thu, 3 Sep 2020 14:59:23 +0100
Subject: [PATCH] drm/panfrost: Set DMA max segment size
Since all we do with scatterlists is map them in the MMU, we don't have
any hardware constraints on how they're laid out. Let the DMA layer know
so it won't warn when DMA API debugging is enabled.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/04371bc36512076b7feee07f854e56b80675d953.1599141563.git.robin.murphy@arm.com
(cherry picked from commit ac5037afefd33fea9a9c1a4a5ac46ece396e7465)
---
drivers/gpu/drm/panfrost/panfrost_gpu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c
index e0f190e43813..eea049c640a6 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gpu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c
@@ -344,6 +344,7 @@ int panfrost_gpu_init(struct panfrost_device *pfdev)
dma_set_mask_and_coherent(pfdev->dev,
DMA_BIT_MASK(FIELD_GET(0xff00, pfdev->features.mmu_features)));
+ dma_set_max_seg_size(pfdev->dev, UINT_MAX);
irq = platform_get_irq_byname(to_platform_device(pfdev->dev), "gpu");
if (irq <= 0)
From 99d273baa069a7838597fdd601e01248d12c2fd1 Mon Sep 17 00:00:00 2001
From: Alex Dewar <alex.dewar90@gmail.com>
Date: Wed, 9 Sep 2020 20:02:08 +0100
Subject: [PATCH] drm/bridge: dw-mipi-dsi: Use kmemdup cf. kmalloc+memcpy
kmemdup can be used instead of kmalloc+memcpy. Replace an occurrence of
this pattern.
Issue identified with Coccinelle.
Signed-off-by: Alex Dewar <alex.dewar90@gmail.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200909190213.156302-1-alex.dewar90@gmail.com
(cherry picked from commit 33f290811d4c1a09c4e92f5bf0458525835dbcba)
---
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index 52f5c5a2ed64..7e9a62ad56e8 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -1049,12 +1049,10 @@ static void debugfs_create_files(void *data)
};
int i;
- dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
+ dsi->debugfs_vpg = kmemdup(debugfs, sizeof(debugfs), GFP_KERNEL);
if (!dsi->debugfs_vpg)
return;
- memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
-
for (i = 0; i < ARRAY_SIZE(debugfs); i++)
debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
dsi->debugfs, &dsi->debugfs_vpg[i],
From 0d1797eb5960177619add1f2ad6f2e57341a628b Mon Sep 17 00:00:00 2001
From: Neil Armstrong <narmstrong@baylibre.com>
Date: Fri, 4 Sep 2020 14:55:31 +0200
Subject: [PATCH] drm/bridge: dw-mipi-dsi: permit configuring the escape clock
rate
The Amlogic D-PHY in the Amlogic AXG SoC Family does support a frequency
higher than 10MHz for the TX Escape Clock, thus make the target rate
configurable.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Philippe Cornu <philippe.cornu@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200904125531.15248-1-narmstrong@baylibre.com
(cherry picked from commit a328ca7e4af347e47742f36933df0fdac1c24ea5)
---
drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 25 ++++++++++++++++++++-----
include/drm/bridge/dw_mipi_dsi.h | 1 +
2 files changed, 21 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index 7e9a62ad56e8..6b268f9445b3 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -605,15 +605,30 @@ static void dw_mipi_dsi_disable(struct dw_mipi_dsi *dsi)
static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi)
{
+ const struct dw_mipi_dsi_phy_ops *phy_ops = dsi->plat_data->phy_ops;
+ unsigned int esc_rate; /* in MHz */
+ u32 esc_clk_division;
+ int ret;
+
/*
* The maximum permitted escape clock is 20MHz and it is derived from
- * lanebyteclk, which is running at "lane_mbps / 8". Thus we want:
- *
- * (lane_mbps >> 3) / esc_clk_division < 20
+ * lanebyteclk, which is running at "lane_mbps / 8".
+ */
+ if (phy_ops->get_esc_clk_rate) {
+ ret = phy_ops->get_esc_clk_rate(dsi->plat_data->priv_data,
+ &esc_rate);
+ if (ret)
+ DRM_DEBUG_DRIVER("Phy get_esc_clk_rate() failed\n");
+ } else
+ esc_rate = 20; /* Default to 20MHz */
+
+ /*
+ * We want :
+ * (lane_mbps >> 3) / esc_clk_division < X
* which is:
- * (lane_mbps >> 3) / 20 > esc_clk_division
+ * (lane_mbps >> 3) / X > esc_clk_division
*/
- u32 esc_clk_division = (dsi->lane_mbps >> 3) / 20 + 1;
+ esc_clk_division = (dsi->lane_mbps >> 3) / esc_rate + 1;
dsi_write(dsi, DSI_PWR_UP, RESET);
diff --git a/include/drm/bridge/dw_mipi_dsi.h b/include/drm/bridge/dw_mipi_dsi.h
index b0e390b3288e..bda8aa7c2280 100644
--- a/include/drm/bridge/dw_mipi_dsi.h
+++ b/include/drm/bridge/dw_mipi_dsi.h
@@ -36,6 +36,7 @@ struct dw_mipi_dsi_phy_ops {
unsigned int *lane_mbps);
int (*get_timing)(void *priv_data, unsigned int lane_mbps,
struct dw_mipi_dsi_dphy_timing *timing);
+ int (*get_esc_clk_rate)(void *priv_data, unsigned int *esc_clk_rate);
};
struct dw_mipi_dsi_host_ops {
Reference in a new issue View git blame Copy permalink