* [PATCH 01/40] drm/rockchip: Get rid of some unnecessary code
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-16 3:53 ` Tomasz Figa
2018-01-15 17:15 ` [PATCH 02/40] drm/rockchip: support prime import sg table Thierry Escande
` (28 subsequent siblings)
29 siblings, 1 reply; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Tomasz Figa <tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Current code implements prepare_fb and cleanup_fb callbacks only to
grab/release fb references, which is already done by atomic framework
when creating/destryoing plane state. Also there are some unused fields
vop and vop_win structs. Let's remove these unused bits.
Signed-off-by: Tomasz Figa <tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
---
drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index ba7505292b78..7a137bc5708c 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -95,9 +95,6 @@ struct vop {
struct drm_device *drm_dev;
bool is_enabled;
- /* mutex vsync_ work */
- struct mutex vsync_mutex;
- bool vsync_work_pending;
struct completion dsp_hold_completion;
/* protected by dev->event_lock */
@@ -1567,8 +1564,6 @@ static int vop_bind(struct device *dev, struct device *master, void *data)
spin_lock_init(&vop->reg_lock);
spin_lock_init(&vop->irq_lock);
- mutex_init(&vop->vsync_mutex);
-
ret = devm_request_irq(dev, vop->irq, vop_isr,
IRQF_SHARED, dev_name(dev), vop);
if (ret)
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* Re: [PATCH 01/40] drm/rockchip: Get rid of some unnecessary code
2018-01-15 17:15 ` [PATCH 01/40] drm/rockchip: Get rid of some unnecessary code Thierry Escande
@ 2018-01-16 3:53 ` Tomasz Figa
0 siblings, 0 replies; 46+ messages in thread
From: Tomasz Figa @ 2018-01-16 3:53 UTC (permalink / raw)
To: Thierry Escande
Cc: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie, Haixia Shi, Ørjan Eide, zain wang, Yakir Yang,
Lin Huang, Douglas Anderson, Mark Yao, linux-kernel,
open list:ARM/Rockchip SoC...,
dri-devel
Hi Thierry,
On Tue, Jan 16, 2018 at 2:15 AM, Thierry Escande
<thierry.escande@collabora.com> wrote:
> From: Tomasz Figa <tfiga@chromium.org>
>
> Current code implements prepare_fb and cleanup_fb callbacks only to
> grab/release fb references, which is already done by atomic framework
> when creating/destryoing plane state.
AFAICT this is already gone in current code, so only the part
mentioned below remains.
> Also there are some unused fields
> vop and vop_win structs. Let's remove these unused bits.
^^
Best regards,
Tomasz
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 46+ messages in thread
* [PATCH 02/40] drm/rockchip: support prime import sg table
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2018-01-15 17:15 ` [PATCH 01/40] drm/rockchip: Get rid of some unnecessary code Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-22 10:44 ` Heiko Stuebner
2018-01-15 17:15 ` [PATCH 04/40] drm/bridge: analogix_dp: set psr activate/deactivate when enable/disable bridge Thierry Escande
` (27 subsequent siblings)
29 siblings, 1 reply; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Haixia Shi <hshi-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
The prime fd to handle ioctl was not used with rockchip before. Support
was added in order to pass graphics_Gbm and to support potential uses
within Chrome OS (e.g. zero-copy video decode, camera).
Signed-off-by: Haixia Shi <hshi-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
---
drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 1 +
drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 118 ++++++++++++++++++++++++++--
drivers/gpu/drm/rockchip/rockchip_drm_gem.h | 5 +-
3 files changed, 115 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index d85431400a0d..88084ca15115 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -230,6 +230,7 @@ static struct drm_driver rockchip_drm_driver = {
.gem_prime_import = drm_gem_prime_import,
.gem_prime_export = drm_gem_prime_export,
.gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table,
+ .gem_prime_import_sg_table = rockchip_gem_prime_import_sg_table,
.gem_prime_vmap = rockchip_gem_prime_vmap,
.gem_prime_vunmap = rockchip_gem_prime_vunmap,
.gem_prime_mmap = rockchip_gem_mmap_buf,
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index 1d9655576b6e..5d52020deca1 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -16,6 +16,8 @@
#include <drm/drmP.h>
#include <drm/drm_gem.h>
#include <drm/drm_vma_manager.h>
+
+#include <linux/dma-buf.h>
#include <linux/iommu.h>
#include "rockchip_drm_drv.h"
@@ -309,12 +311,10 @@ static void rockchip_gem_release_object(struct rockchip_gem_object *rk_obj)
}
struct rockchip_gem_object *
- rockchip_gem_create_object(struct drm_device *drm, unsigned int size,
- bool alloc_kmap)
+ rockchip_gem_alloc_object(struct drm_device *drm, unsigned int size)
{
struct rockchip_gem_object *rk_obj;
struct drm_gem_object *obj;
- int ret;
size = round_up(size, PAGE_SIZE);
@@ -326,6 +326,20 @@ struct rockchip_gem_object *
drm_gem_object_init(drm, obj, size);
+ return rk_obj;
+}
+
+struct rockchip_gem_object *
+rockchip_gem_create_object(struct drm_device *drm, unsigned int size,
+ bool alloc_kmap)
+{
+ struct rockchip_gem_object *rk_obj;
+ int ret;
+
+ rk_obj = rockchip_gem_alloc_object(drm, size);
+ if (IS_ERR(rk_obj))
+ return rk_obj;
+
ret = rockchip_gem_alloc_buf(rk_obj, alloc_kmap);
if (ret)
goto err_free_rk_obj;
@@ -343,11 +357,21 @@ struct rockchip_gem_object *
*/
void rockchip_gem_free_object(struct drm_gem_object *obj)
{
- struct rockchip_gem_object *rk_obj;
-
- rk_obj = to_rockchip_obj(obj);
+ struct drm_device *drm = obj->dev;
+ struct rockchip_drm_private *private = drm->dev_private;
+ struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
- rockchip_gem_free_buf(rk_obj);
+ if (obj->import_attach) {
+ 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);
+ }
+ drm_prime_gem_destroy(obj, rk_obj->sgt);
+ } else {
+ rockchip_gem_free_buf(rk_obj);
+ }
rockchip_gem_release_object(rk_obj);
}
@@ -451,6 +475,86 @@ 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,
+ struct sg_table *sg,
+ struct rockchip_gem_object *rk_obj)
+{
+ rk_obj->sgt = sg;
+ return rockchip_gem_iommu_map(rk_obj);
+}
+
+static int
+rockchip_gem_dma_map_sg(struct drm_device *drm,
+ struct dma_buf_attachment *attach,
+ 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;
+
+ if (rockchip_sg_get_contiguous_size(sg, count) < 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);
+ return -EINVAL;
+ }
+
+ rk_obj->dma_addr = sg_dma_address(sg->sgl);
+ rk_obj->sgt = sg;
+ return 0;
+}
+
+struct drm_gem_object *
+rockchip_gem_prime_import_sg_table(struct drm_device *drm,
+ struct dma_buf_attachment *attach,
+ struct sg_table *sg)
+{
+ struct rockchip_drm_private *private = drm->dev_private;
+ struct rockchip_gem_object *rk_obj;
+ int ret;
+
+ rk_obj = rockchip_gem_alloc_object(drm, attach->dmabuf->size);
+ if (IS_ERR(rk_obj))
+ return ERR_CAST(rk_obj);
+
+ if (private->domain)
+ ret = rockchip_gem_iommu_map_sg(drm, attach, sg, rk_obj);
+ else
+ ret = rockchip_gem_dma_map_sg(drm, attach, sg, rk_obj);
+
+ if (ret < 0) {
+ DRM_ERROR("failed to import sg table: %d\n", ret);
+ goto err_free_rk_obj;
+ }
+
+ return &rk_obj->base;
+
+err_free_rk_obj:
+ rockchip_gem_release_object(rk_obj);
+ return ERR_PTR(ret);
+}
+
void *rockchip_gem_prime_vmap(struct drm_gem_object *obj)
{
struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
index f237375582fb..d41fa65219d2 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h
@@ -36,8 +36,9 @@ struct rockchip_gem_object {
struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj);
struct drm_gem_object *
-rockchip_gem_prime_import_sg_table(struct drm_device *dev, size_t size,
- struct sg_table *sgt);
+rockchip_gem_prime_import_sg_table(struct drm_device *dev,
+ struct dma_buf_attachment *attach,
+ struct sg_table *sg);
void *rockchip_gem_prime_vmap(struct drm_gem_object *obj);
void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* Re: [PATCH 02/40] drm/rockchip: support prime import sg table
2018-01-15 17:15 ` [PATCH 02/40] drm/rockchip: support prime import sg table Thierry Escande
@ 2018-01-22 10:44 ` Heiko Stuebner
0 siblings, 0 replies; 46+ messages in thread
From: Heiko Stuebner @ 2018-01-22 10:44 UTC (permalink / raw)
To: linux-rockchip
Cc: Thierry Escande, Archit Taneja, Inki Dae, Thierry Reding,
Sandy Huang, Sean Paul, David Airlie, zain wang, Lin Huang,
linux-kernel, Douglas Anderson, dri-devel, Tomasz Figa,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
Am Montag, 15. Januar 2018, 18:15:36 CET schrieb Thierry Escande:
> From: Haixia Shi <hshi@chromium.org>
>
> The prime fd to handle ioctl was not used with rockchip before. Support
> was added in order to pass graphics_Gbm and to support potential uses
> within Chrome OS (e.g. zero-copy video decode, camera).
>
> Signed-off-by: Haixia Shi <hshi@chromium.org>
> Signed-off-by: Sean Paul <seanpaul@chromium.org>
> Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
On rk3036 + lima and rk3328 + lima
Tested-by: Heiko Stuebner <heiko@sntech.de>
^ permalink raw reply [flat|nested] 46+ messages in thread
* [PATCH 04/40] drm/bridge: analogix_dp: set psr activate/deactivate when enable/disable bridge
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2018-01-15 17:15 ` [PATCH 01/40] drm/rockchip: Get rid of some unnecessary code Thierry Escande
2018-01-15 17:15 ` [PATCH 02/40] drm/rockchip: support prime import sg table Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 05/40] drm/bridge: analogix_dp: Don't power bridge in analogix_dp_bind Thierry Escande
` (26 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz@rock-chips.com>
There's a race between when bridge_disable and when vop_crtc_disable
are called. If the flush timer triggers a new psr work between these,
we will operate eDP without power shutdowned by bridge_disable. In this
case, moving activate/deactivate to enable/disable bridge to avoid it.
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 7 +++++-
drivers/gpu/drm/rockchip/rockchip_drm_psr.c | 30 ++++++++++++++++++++-----
drivers/gpu/drm/rockchip/rockchip_drm_psr.h | 4 ++--
drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 4 ----
4 files changed, 32 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index eb88c52336a7..7d76ff47028d 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -150,12 +150,17 @@ static int rockchip_dp_poweron(struct analogix_dp_plat_data *plat_data)
return ret;
}
- return 0;
+ return rockchip_drm_psr_activate(&dp->encoder);
}
static int rockchip_dp_powerdown(struct analogix_dp_plat_data *plat_data)
{
struct rockchip_dp_device *dp = to_dp(plat_data);
+ int ret;
+
+ ret = rockchip_drm_psr_deactivate(&dp->encoder);
+ if (ret != 0)
+ return ret;
clk_disable_unprepare(dp->pclk);
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
index 3acfd576b7df..b3fb99c5b1fd 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
@@ -57,6 +57,24 @@ static struct psr_drv *find_psr_by_crtc(struct drm_crtc *crtc)
return psr;
}
+static struct psr_drv *find_psr_by_encoder(struct drm_encoder *encoder)
+{
+ struct rockchip_drm_private *drm_drv = encoder->dev->dev_private;
+ struct psr_drv *psr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&drm_drv->psr_list_lock, flags);
+ list_for_each_entry(psr, &drm_drv->psr_list, list) {
+ if (psr->encoder == encoder)
+ goto out;
+ }
+ psr = ERR_PTR(-ENODEV);
+
+out:
+ spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags);
+ return psr;
+}
+
static void psr_set_state_locked(struct psr_drv *psr, enum psr_state state)
{
/*
@@ -115,14 +133,14 @@ static void psr_flush_handler(struct timer_list *t)
/**
* rockchip_drm_psr_activate - activate PSR on the given pipe
- * @crtc: CRTC to obtain the PSR encoder
+ * @encoder: encoder to obtain the PSR encoder
*
* Returns:
* Zero on success, negative errno on failure.
*/
-int rockchip_drm_psr_activate(struct drm_crtc *crtc)
+int rockchip_drm_psr_activate(struct drm_encoder *encoder)
{
- struct psr_drv *psr = find_psr_by_crtc(crtc);
+ struct psr_drv *psr = find_psr_by_encoder(encoder);
unsigned long flags;
if (IS_ERR(psr))
@@ -138,14 +156,14 @@ EXPORT_SYMBOL(rockchip_drm_psr_activate);
/**
* rockchip_drm_psr_deactivate - deactivate PSR on the given pipe
- * @crtc: CRTC to obtain the PSR encoder
+ * @encoder: encoder to obtain the PSR encoder
*
* Returns:
* Zero on success, negative errno on failure.
*/
-int rockchip_drm_psr_deactivate(struct drm_crtc *crtc)
+int rockchip_drm_psr_deactivate(struct drm_encoder *encoder)
{
- struct psr_drv *psr = find_psr_by_crtc(crtc);
+ struct psr_drv *psr = find_psr_by_encoder(encoder);
unsigned long flags;
if (IS_ERR(psr))
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h
index b420cf1bf902..b1ea0155e57c 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h
@@ -18,8 +18,8 @@
void rockchip_drm_psr_flush_all(struct drm_device *dev);
int rockchip_drm_psr_flush(struct drm_crtc *crtc);
-int rockchip_drm_psr_activate(struct drm_crtc *crtc);
-int rockchip_drm_psr_deactivate(struct drm_crtc *crtc);
+int rockchip_drm_psr_activate(struct drm_encoder *encoder);
+int rockchip_drm_psr_deactivate(struct drm_encoder *encoder);
int rockchip_drm_psr_register(struct drm_encoder *encoder,
void (*psr_set)(struct drm_encoder *, bool enable));
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 7a137bc5708c..31304434847a 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -577,8 +577,6 @@ static void vop_crtc_atomic_disable(struct drm_crtc *crtc,
WARN_ON(vop->event);
- rockchip_drm_psr_deactivate(&vop->crtc);
-
drm_crtc_vblank_off(crtc);
/*
@@ -951,8 +949,6 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc,
clk_set_rate(vop->dclk, adjusted_mode->clock * 1000);
VOP_REG_SET(vop, common, standby, 0);
-
- rockchip_drm_psr_activate(&vop->crtc);
}
static bool vop_fs_irq_is_pending(struct vop *vop)
--
2.14.1
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 05/40] drm/bridge: analogix_dp: Don't power bridge in analogix_dp_bind
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (2 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 04/40] drm/bridge: analogix_dp: set psr activate/deactivate when enable/disable bridge Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 06/40] drm/rockchip: Don't use atomic constructs for psr Thierry Escande
` (25 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz@rock-chips.com>
The bridge does not need to be powered in analogix_dp_bind(), so
remove the calls to pm_runtime_get()/phy_power_on()/analogix_dp_init_dp()
as well as their power-off counterparts.
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
[the patch originally just removed the power_on portion, seanpaul removed
the power off code as well as improved the commit message]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 10 ----------
1 file changed, 10 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index cb5e18d6ba04..1477ea9ba85d 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1382,11 +1382,6 @@ analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
pm_runtime_enable(dev);
- pm_runtime_get_sync(dev);
- phy_power_on(dp->phy);
-
- analogix_dp_init_dp(dp);
-
ret = devm_request_threaded_irq(&pdev->dev, dp->irq,
analogix_dp_hardirq,
analogix_dp_irq_thread,
@@ -1414,15 +1409,10 @@ analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
goto err_disable_pm_runtime;
}
- phy_power_off(dp->phy);
- pm_runtime_put(dev);
-
return dp;
err_disable_pm_runtime:
- phy_power_off(dp->phy);
- pm_runtime_put(dev);
pm_runtime_disable(dev);
return ERR_PTR(ret);
--
2.14.1
_______________________________________________
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Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 06/40] drm/rockchip: Don't use atomic constructs for psr
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (3 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 05/40] drm/bridge: analogix_dp: Don't power bridge in analogix_dp_bind Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 07/40] drm/bridge: analogix_dp: detect Sink PSR state after configuring the PSR Thierry Escande
` (24 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Sean Paul <seanpaul@chromium.org>
Instead of using timer and spinlocks, use delayed_work and
mutexes for rockchip psr. This allows us to make blocking
calls when enabling/disabling psr (which is sort of important
given we're talking over dpcd to the display).
Cc: Caesar Wang <wxt@rock-chips.com>
Cc: 征增 王 <wzz@rock-chips.com>
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 2 +-
drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 2 +-
drivers/gpu/drm/rockchip/rockchip_drm_psr.c | 68 ++++++++++++-----------------
3 files changed, 31 insertions(+), 41 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 88084ca15115..0609113d6a71 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -134,7 +134,7 @@ static int rockchip_drm_bind(struct device *dev)
drm_dev->dev_private = private;
INIT_LIST_HEAD(&private->psr_list);
- spin_lock_init(&private->psr_list_lock);
+ mutex_init(&private->psr_list_lock);
ret = rockchip_drm_init_iommu(drm_dev);
if (ret)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
index 498dfbc52cec..9c064a40458b 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
@@ -55,7 +55,7 @@ struct rockchip_drm_private {
struct mutex mm_lock;
struct drm_mm mm;
struct list_head psr_list;
- spinlock_t psr_list_lock;
+ struct mutex psr_list_lock;
};
int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
index b3fb99c5b1fd..b339ca943139 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
@@ -18,7 +18,7 @@
#include "rockchip_drm_drv.h"
#include "rockchip_drm_psr.h"
-#define PSR_FLUSH_TIMEOUT msecs_to_jiffies(100)
+#define PSR_FLUSH_TIMEOUT_MS 100
enum psr_state {
PSR_FLUSH,
@@ -30,11 +30,11 @@ struct psr_drv {
struct list_head list;
struct drm_encoder *encoder;
- spinlock_t lock;
+ struct mutex lock;
bool active;
enum psr_state state;
- struct timer_list flush_timer;
+ struct delayed_work flush_work;
void (*set)(struct drm_encoder *encoder, bool enable);
};
@@ -43,9 +43,8 @@ static struct psr_drv *find_psr_by_crtc(struct drm_crtc *crtc)
{
struct rockchip_drm_private *drm_drv = crtc->dev->dev_private;
struct psr_drv *psr;
- unsigned long flags;
- spin_lock_irqsave(&drm_drv->psr_list_lock, flags);
+ mutex_lock(&drm_drv->psr_list_lock);
list_for_each_entry(psr, &drm_drv->psr_list, list) {
if (psr->encoder->crtc == crtc)
goto out;
@@ -53,7 +52,7 @@ static struct psr_drv *find_psr_by_crtc(struct drm_crtc *crtc)
psr = ERR_PTR(-ENODEV);
out:
- spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags);
+ mutex_unlock(&drm_drv->psr_list_lock);
return psr;
}
@@ -61,9 +60,8 @@ static struct psr_drv *find_psr_by_encoder(struct drm_encoder *encoder)
{
struct rockchip_drm_private *drm_drv = encoder->dev->dev_private;
struct psr_drv *psr;
- unsigned long flags;
- spin_lock_irqsave(&drm_drv->psr_list_lock, flags);
+ mutex_lock(&drm_drv->psr_list_lock);
list_for_each_entry(psr, &drm_drv->psr_list, list) {
if (psr->encoder == encoder)
goto out;
@@ -71,7 +69,7 @@ static struct psr_drv *find_psr_by_encoder(struct drm_encoder *encoder)
psr = ERR_PTR(-ENODEV);
out:
- spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags);
+ mutex_unlock(&drm_drv->psr_list_lock);
return psr;
}
@@ -112,23 +110,21 @@ static void psr_set_state_locked(struct psr_drv *psr, enum psr_state state)
static void psr_set_state(struct psr_drv *psr, enum psr_state state)
{
- unsigned long flags;
-
- spin_lock_irqsave(&psr->lock, flags);
+ mutex_lock(&psr->lock);
psr_set_state_locked(psr, state);
- spin_unlock_irqrestore(&psr->lock, flags);
+ mutex_unlock(&psr->lock);
}
-static void psr_flush_handler(struct timer_list *t)
+static void psr_flush_handler(struct work_struct *work)
{
- struct psr_drv *psr = from_timer(psr, t, flush_timer);
- unsigned long flags;
+ struct psr_drv *psr = container_of(to_delayed_work(work),
+ struct psr_drv, flush_work);
/* If the state has changed since we initiated the flush, do nothing */
- spin_lock_irqsave(&psr->lock, flags);
+ mutex_lock(&psr->lock);
if (psr->state == PSR_FLUSH)
psr_set_state_locked(psr, PSR_ENABLE);
- spin_unlock_irqrestore(&psr->lock, flags);
+ mutex_unlock(&psr->lock);
}
/**
@@ -141,14 +137,13 @@ static void psr_flush_handler(struct timer_list *t)
int rockchip_drm_psr_activate(struct drm_encoder *encoder)
{
struct psr_drv *psr = find_psr_by_encoder(encoder);
- unsigned long flags;
if (IS_ERR(psr))
return PTR_ERR(psr);
- spin_lock_irqsave(&psr->lock, flags);
+ mutex_lock(&psr->lock);
psr->active = true;
- spin_unlock_irqrestore(&psr->lock, flags);
+ mutex_unlock(&psr->lock);
return 0;
}
@@ -164,15 +159,14 @@ EXPORT_SYMBOL(rockchip_drm_psr_activate);
int rockchip_drm_psr_deactivate(struct drm_encoder *encoder)
{
struct psr_drv *psr = find_psr_by_encoder(encoder);
- unsigned long flags;
if (IS_ERR(psr))
return PTR_ERR(psr);
- spin_lock_irqsave(&psr->lock, flags);
+ mutex_lock(&psr->lock);
psr->active = false;
- spin_unlock_irqrestore(&psr->lock, flags);
- del_timer_sync(&psr->flush_timer);
+ mutex_unlock(&psr->lock);
+ cancel_delayed_work_sync(&psr->flush_work);
return 0;
}
@@ -180,9 +174,8 @@ EXPORT_SYMBOL(rockchip_drm_psr_deactivate);
static void rockchip_drm_do_flush(struct psr_drv *psr)
{
- mod_timer(&psr->flush_timer,
- round_jiffies_up(jiffies + PSR_FLUSH_TIMEOUT));
psr_set_state(psr, PSR_FLUSH);
+ mod_delayed_work(system_wq, &psr->flush_work, PSR_FLUSH_TIMEOUT_MS);
}
/**
@@ -219,12 +212,11 @@ void rockchip_drm_psr_flush_all(struct drm_device *dev)
{
struct rockchip_drm_private *drm_drv = dev->dev_private;
struct psr_drv *psr;
- unsigned long flags;
- spin_lock_irqsave(&drm_drv->psr_list_lock, flags);
+ mutex_lock(&drm_drv->psr_list_lock);
list_for_each_entry(psr, &drm_drv->psr_list, list)
rockchip_drm_do_flush(psr);
- spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags);
+ mutex_unlock(&drm_drv->psr_list_lock);
}
EXPORT_SYMBOL(rockchip_drm_psr_flush_all);
@@ -241,7 +233,6 @@ int rockchip_drm_psr_register(struct drm_encoder *encoder,
{
struct rockchip_drm_private *drm_drv = encoder->dev->dev_private;
struct psr_drv *psr;
- unsigned long flags;
if (!encoder || !psr_set)
return -EINVAL;
@@ -250,17 +241,17 @@ int rockchip_drm_psr_register(struct drm_encoder *encoder,
if (!psr)
return -ENOMEM;
- timer_setup(&psr->flush_timer, psr_flush_handler, 0);
- spin_lock_init(&psr->lock);
+ INIT_DELAYED_WORK(&psr->flush_work, psr_flush_handler);
+ mutex_init(&psr->lock);
psr->active = true;
psr->state = PSR_DISABLE;
psr->encoder = encoder;
psr->set = psr_set;
- spin_lock_irqsave(&drm_drv->psr_list_lock, flags);
+ mutex_lock(&drm_drv->psr_list_lock);
list_add_tail(&psr->list, &drm_drv->psr_list);
- spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags);
+ mutex_unlock(&drm_drv->psr_list_lock);
return 0;
}
@@ -278,16 +269,15 @@ void rockchip_drm_psr_unregister(struct drm_encoder *encoder)
{
struct rockchip_drm_private *drm_drv = encoder->dev->dev_private;
struct psr_drv *psr, *n;
- unsigned long flags;
- spin_lock_irqsave(&drm_drv->psr_list_lock, flags);
+ mutex_lock(&drm_drv->psr_list_lock);
list_for_each_entry_safe(psr, n, &drm_drv->psr_list, list) {
if (psr->encoder == encoder) {
- del_timer(&psr->flush_timer);
+ cancel_delayed_work_sync(&psr->flush_work);
list_del(&psr->list);
kfree(psr);
}
}
- spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags);
+ mutex_unlock(&drm_drv->psr_list_lock);
}
EXPORT_SYMBOL(rockchip_drm_psr_unregister);
--
2.14.1
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 07/40] drm/bridge: analogix_dp: detect Sink PSR state after configuring the PSR
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (4 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 06/40] drm/rockchip: Don't use atomic constructs for psr Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 08/40] drm/rockchip: Remove analogix psr worker Thierry Escande
` (23 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Yakir Yang <ykk@rock-chips.com>
Make sure the request PSR state takes effect in analogix_dp_send_psr_spd()
function, or print the sink PSR error state if we failed to apply the
requested PSR setting.
Cc: 征增 王 <wzz@rock-chips.com>
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>
[seanpaul changed timeout loop to a readx poll]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 6 ++--
drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 6 ++--
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 35 +++++++++++++++++++---
3 files changed, 37 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 1477ea9ba85d..b52de046f5f1 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -122,8 +122,7 @@ int analogix_dp_enable_psr(struct analogix_dp_device *dp)
psr_vsc.DB0 = 0;
psr_vsc.DB1 = EDP_VSC_PSR_STATE_ACTIVE | EDP_VSC_PSR_CRC_VALUES_VALID;
- analogix_dp_send_psr_spd(dp, &psr_vsc);
- return 0;
+ return analogix_dp_send_psr_spd(dp, &psr_vsc);
}
EXPORT_SYMBOL_GPL(analogix_dp_enable_psr);
@@ -149,8 +148,7 @@ int analogix_dp_disable_psr(struct analogix_dp_device *dp)
if (ret != 1)
dev_err(dp->dev, "Failed to set DP Power0 %d\n", ret);
- analogix_dp_send_psr_spd(dp, &psr_vsc);
- return 0;
+ return analogix_dp_send_psr_spd(dp, &psr_vsc);
}
EXPORT_SYMBOL_GPL(analogix_dp_disable_psr);
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
index 5c6a28806129..b039b28d8fcc 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -20,6 +20,8 @@
#define MAX_CR_LOOP 5
#define MAX_EQ_LOOP 5
+#define DP_TIMEOUT_PSR_LOOP_MS 300
+
/* DP_MAX_LANE_COUNT */
#define DPCD_ENHANCED_FRAME_CAP(x) (((x) >> 7) & 0x1)
#define DPCD_MAX_LANE_COUNT(x) ((x) & 0x1f)
@@ -247,8 +249,8 @@ void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp);
void analogix_dp_enable_scrambling(struct analogix_dp_device *dp);
void analogix_dp_disable_scrambling(struct analogix_dp_device *dp);
void analogix_dp_enable_psr_crc(struct analogix_dp_device *dp);
-void analogix_dp_send_psr_spd(struct analogix_dp_device *dp,
- struct edp_vsc_psr *vsc);
+int analogix_dp_send_psr_spd(struct analogix_dp_device *dp,
+ struct edp_vsc_psr *vsc);
ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
struct drm_dp_aux_msg *msg);
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index 303083ad28e3..005a3f7005d2 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -10,10 +10,11 @@
* option) any later version.
*/
-#include <linux/device.h>
-#include <linux/io.h>
#include <linux/delay.h>
+#include <linux/device.h>
#include <linux/gpio.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
#include <drm/bridge/analogix_dp.h>
@@ -992,10 +993,25 @@ void analogix_dp_enable_psr_crc(struct analogix_dp_device *dp)
writel(PSR_VID_CRC_ENABLE, dp->reg_base + ANALOGIX_DP_CRC_CON);
}
-void analogix_dp_send_psr_spd(struct analogix_dp_device *dp,
- struct edp_vsc_psr *vsc)
+static ssize_t analogix_dp_get_psr_status(struct analogix_dp_device *dp)
+{
+ ssize_t val;
+ u8 status;
+
+ val = drm_dp_dpcd_readb(&dp->aux, DP_PSR_STATUS, &status);
+ if (val < 0) {
+ dev_err(dp->dev, "PSR_STATUS read failed ret=%zd", val);
+ return val;
+ }
+ return status;
+}
+
+int analogix_dp_send_psr_spd(struct analogix_dp_device *dp,
+ struct edp_vsc_psr *vsc)
{
unsigned int val;
+ int ret;
+ ssize_t psr_status;
/* don't send info frame */
val = readl(dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL);
@@ -1036,6 +1052,17 @@ void analogix_dp_send_psr_spd(struct analogix_dp_device *dp,
val = readl(dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL);
val |= IF_EN;
writel(val, dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL);
+
+ ret = readx_poll_timeout(analogix_dp_get_psr_status, dp, psr_status,
+ psr_status >= 0 &&
+ ((vsc->DB1 && psr_status == DP_PSR_SINK_ACTIVE_RFB) ||
+ (!vsc->DB1 && psr_status == DP_PSR_SINK_INACTIVE)), 1500,
+ DP_TIMEOUT_PSR_LOOP_MS * 1000);
+ if (ret) {
+ dev_warn(dp->dev, "Failed to apply PSR %d\n", ret);
+ return ret;
+ }
+ return 0;
}
ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
--
2.14.1
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 08/40] drm/rockchip: Remove analogix psr worker
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (5 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 07/40] drm/bridge: analogix_dp: detect Sink PSR state after configuring the PSR Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 09/40] drm/bridge: analogix_dp: Don't change psr while bridge is disabled Thierry Escande
` (22 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Sean Paul <seanpaul@chromium.org>
Now that the spinlocks and timers are gone, we can remove the psr
worker located in rockchip's analogix driver and do the enable/disable
directly. This should simplify the code and remove races on disable.
Cc: 征增 王 <wzz@rock-chips.com>
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 31 ++-----------------------
1 file changed, 2 insertions(+), 29 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 7d76ff47028d..36334839a3f8 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -71,10 +71,6 @@ struct rockchip_dp_device {
struct regmap *grf;
struct reset_control *rst;
- struct work_struct psr_work;
- struct mutex psr_lock;
- unsigned int psr_state;
-
const struct rockchip_dp_chip_data *data;
struct analogix_dp_device *adp;
@@ -84,28 +80,13 @@ struct rockchip_dp_device {
static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
{
struct rockchip_dp_device *dp = to_dp(encoder);
+ int ret;
if (!analogix_dp_psr_supported(dp->adp))
return;
DRM_DEV_DEBUG(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit");
- mutex_lock(&dp->psr_lock);
- if (enabled)
- dp->psr_state = EDP_VSC_PSR_STATE_ACTIVE;
- else
- dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
-
- schedule_work(&dp->psr_work);
- mutex_unlock(&dp->psr_lock);
-}
-
-static void analogix_dp_psr_work(struct work_struct *work)
-{
- struct rockchip_dp_device *dp =
- container_of(work, typeof(*dp), psr_work);
- int ret;
-
ret = rockchip_drm_wait_vact_end(dp->encoder.crtc,
PSR_WAIT_LINE_FLAG_TIMEOUT_MS);
if (ret) {
@@ -113,12 +94,10 @@ static void analogix_dp_psr_work(struct work_struct *work)
return;
}
- mutex_lock(&dp->psr_lock);
- if (dp->psr_state == EDP_VSC_PSR_STATE_ACTIVE)
+ if (enabled)
analogix_dp_enable_psr(dp->adp);
else
analogix_dp_disable_psr(dp->adp);
- mutex_unlock(&dp->psr_lock);
}
static int rockchip_dp_pre_init(struct rockchip_dp_device *dp)
@@ -135,8 +114,6 @@ static int rockchip_dp_poweron(struct analogix_dp_plat_data *plat_data)
struct rockchip_dp_device *dp = to_dp(plat_data);
int ret;
- cancel_work_sync(&dp->psr_work);
-
ret = clk_prepare_enable(dp->pclk);
if (ret < 0) {
DRM_DEV_ERROR(dp->dev, "failed to enable pclk %d\n", ret);
@@ -355,10 +332,6 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
dp->plat_data.power_off = rockchip_dp_powerdown;
dp->plat_data.get_modes = rockchip_dp_get_modes;
- mutex_init(&dp->psr_lock);
- dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
- INIT_WORK(&dp->psr_work, analogix_dp_psr_work);
-
ret = rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
if (ret < 0)
goto err_cleanup_encoder;
--
2.14.1
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 09/40] drm/bridge: analogix_dp: Don't change psr while bridge is disabled
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (6 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 08/40] drm/rockchip: Remove analogix psr worker Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 10/40] drm/rockchip: add mutex vop lock Thierry Escande
` (21 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
There is a race between AUX CH bring-up and enabling bridge which will
cause link training to fail. To avoid hitting it, don't change psr state
while enabling the bridge.
Cc: Tomeu Vizoso <tomeu.vizoso-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
Cc: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Signed-off-by: Caesar Wang <wxt-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
[seanpaul fixed up the commit message a bit and renamed *_supported to *_enabled]
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 15 ++++++++-------
drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 2 +-
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 2 +-
include/drm/bridge/analogix_dp.h | 2 +-
4 files changed, 11 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index b52de046f5f1..84141571e960 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -98,18 +98,18 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
return 0;
}
-int analogix_dp_psr_supported(struct analogix_dp_device *dp)
+int analogix_dp_psr_enabled(struct analogix_dp_device *dp)
{
- return dp->psr_support;
+ return dp->psr_enable;
}
-EXPORT_SYMBOL_GPL(analogix_dp_psr_supported);
+EXPORT_SYMBOL_GPL(analogix_dp_psr_enabled);
int analogix_dp_enable_psr(struct analogix_dp_device *dp)
{
struct edp_vsc_psr psr_vsc;
- if (!dp->psr_support)
+ if (!dp->psr_enable)
return 0;
/* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */
@@ -131,7 +131,7 @@ int analogix_dp_disable_psr(struct analogix_dp_device *dp)
struct edp_vsc_psr psr_vsc;
int ret;
- if (!dp->psr_support)
+ if (!dp->psr_enable)
return 0;
/* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */
@@ -875,8 +875,8 @@ static void analogix_dp_commit(struct analogix_dp_device *dp)
/* Enable video */
analogix_dp_start_video(dp);
- dp->psr_support = analogix_dp_detect_sink_psr(dp);
- if (dp->psr_support)
+ dp->psr_enable = analogix_dp_detect_sink_psr(dp);
+ if (dp->psr_enable)
analogix_dp_enable_sink_psr(dp);
}
@@ -1118,6 +1118,7 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
if (ret)
DRM_ERROR("failed to setup the panel ret = %d\n", ret);
+ dp->psr_enable = false;
dp->dpms_mode = DRM_MODE_DPMS_OFF;
}
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
index b039b28d8fcc..e135a42cb19e 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -170,7 +170,7 @@ struct analogix_dp_device {
int dpms_mode;
int hpd_gpio;
bool force_hpd;
- bool psr_support;
+ bool psr_enable;
struct mutex panel_lock;
bool panel_is_modeset;
diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 36334839a3f8..3e8bf79bea58 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -82,7 +82,7 @@ static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
struct rockchip_dp_device *dp = to_dp(encoder);
int ret;
- if (!analogix_dp_psr_supported(dp->adp))
+ if (!analogix_dp_psr_enabled(dp->adp))
return;
DRM_DEV_DEBUG(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit");
diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h
index 5518fc75dd6e..c2788483c882 100644
--- a/include/drm/bridge/analogix_dp.h
+++ b/include/drm/bridge/analogix_dp.h
@@ -40,7 +40,7 @@ struct analogix_dp_plat_data {
struct drm_connector *);
};
-int analogix_dp_psr_supported(struct analogix_dp_device *dp);
+int analogix_dp_psr_enabled(struct analogix_dp_device *dp);
int analogix_dp_enable_psr(struct analogix_dp_device *dp);
int analogix_dp_disable_psr(struct analogix_dp_device *dp);
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 10/40] drm/rockchip: add mutex vop lock
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (7 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 09/40] drm/bridge: analogix_dp: Don't change psr while bridge is disabled Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 11/40] drm/bridge: analogix_dp: add fast link train for eDP Thierry Escande
` (20 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Add a lock to vop to avoid disabling the crtc while waiting for a line
flag while enabling psr. If we disable in the middle of waiting for the
line flag, we'll end up timing out or worse.
Signed-off-by: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
---
drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 30 +++++++++++++++++++++++------
1 file changed, 24 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 31304434847a..bf4b1a2f3fa4 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -117,6 +117,8 @@ struct vop {
spinlock_t reg_lock;
/* lock vop irq reg */
spinlock_t irq_lock;
+ /* protects crtc enable/disable */
+ struct mutex vop_lock;
unsigned int irq;
@@ -577,6 +579,7 @@ static void vop_crtc_atomic_disable(struct drm_crtc *crtc,
WARN_ON(vop->event);
+ mutex_lock(&vop->vop_lock);
drm_crtc_vblank_off(crtc);
/*
@@ -612,6 +615,7 @@ static void vop_crtc_atomic_disable(struct drm_crtc *crtc,
clk_disable(vop->aclk);
clk_disable(vop->hclk);
pm_runtime_put(vop->dev);
+ mutex_unlock(&vop->vop_lock);
if (crtc->state->event && !crtc->state->active) {
spin_lock_irq(&crtc->dev->event_lock);
@@ -882,10 +886,13 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc,
uint32_t pin_pol, val;
int ret;
+ mutex_lock(&vop->vop_lock);
+
WARN_ON(vop->event);
ret = vop_enable(crtc);
if (ret) {
+ mutex_unlock(&vop->vop_lock);
DRM_DEV_ERROR(vop->dev, "Failed to enable vop (%d)\n", ret);
return;
}
@@ -949,6 +956,7 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc,
clk_set_rate(vop->dclk, adjusted_mode->clock * 1000);
VOP_REG_SET(vop, common, standby, 0);
+ mutex_unlock(&vop->vop_lock);
}
static bool vop_fs_irq_is_pending(struct vop *vop)
@@ -1487,15 +1495,21 @@ int rockchip_drm_wait_vact_end(struct drm_crtc *crtc, unsigned int mstimeout)
{
struct vop *vop = to_vop(crtc);
unsigned long jiffies_left;
+ int ret = 0;
if (!crtc || !vop->is_enabled)
return -ENODEV;
- if (mstimeout <= 0)
- return -EINVAL;
+ mutex_lock(&vop->vop_lock);
+ if (mstimeout <= 0) {
+ ret = -EINVAL;
+ goto out;
+ }
- if (vop_line_flag_irq_is_enabled(vop))
- return -EBUSY;
+ if (vop_line_flag_irq_is_enabled(vop)) {
+ ret = -EBUSY;
+ goto out;
+ }
reinit_completion(&vop->line_flag_completion);
vop_line_flag_irq_enable(vop);
@@ -1506,10 +1520,13 @@ int rockchip_drm_wait_vact_end(struct drm_crtc *crtc, unsigned int mstimeout)
if (jiffies_left == 0) {
DRM_DEV_ERROR(vop->dev, "Timeout waiting for IRQ\n");
- return -ETIMEDOUT;
+ ret = -ETIMEDOUT;
+ goto out;
}
- return 0;
+out:
+ mutex_unlock(&vop->vop_lock);
+ return ret;
}
EXPORT_SYMBOL(rockchip_drm_wait_vact_end);
@@ -1559,6 +1576,7 @@ static int vop_bind(struct device *dev, struct device *master, void *data)
spin_lock_init(&vop->reg_lock);
spin_lock_init(&vop->irq_lock);
+ mutex_init(&vop->vop_lock);
ret = devm_request_irq(dev, vop->irq, vop_isr,
IRQF_SHARED, dev_name(dev), vop);
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 11/40] drm/bridge: analogix_dp: add fast link train for eDP
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (8 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 10/40] drm/rockchip: add mutex vop lock Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 13/40] drm/bridge: analogix_dp: Move enable video into config_video() Thierry Escande
` (19 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
We would meet a short black screen when exit PSR with the full link
training, In this case, we should use fast link train instead of full
link training.
Signed-off-by: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 142 ++++++++++++++++-----
drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 3 +
2 files changed, 114 insertions(+), 31 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 84141571e960..e0775adf80b3 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -10,17 +10,18 @@
* option) any later version.
*/
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/err.h>
#include <linux/clk.h>
-#include <linux/io.h>
+#include <linux/component.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
-#include <linux/gpio.h>
-#include <linux/component.h>
#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
@@ -35,6 +36,8 @@
#define to_dp(nm) container_of(nm, struct analogix_dp_device, nm)
+static const bool verify_fast_training;
+
struct bridge_init {
struct i2c_client *client;
struct device_node *node;
@@ -528,7 +531,7 @@ static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
{
int lane, lane_count, retval;
u32 reg;
- u8 link_align, link_status[2], adjust_request[2];
+ u8 link_align, link_status[2], adjust_request[2], spread;
usleep_range(400, 401);
@@ -571,6 +574,20 @@ static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
dev_dbg(dp->dev, "final lane count = %.2x\n",
dp->link_train.lane_count);
+ retval = drm_dp_dpcd_readb(&dp->aux, DP_MAX_DOWNSPREAD,
+ &spread);
+ if (retval != 1) {
+ dev_err(dp->dev, "failed to read downspread %d\n",
+ retval);
+ dp->fast_train_support = false;
+ } else {
+ dp->fast_train_support =
+ (spread & DP_NO_AUX_HANDSHAKE_LINK_TRAINING) ?
+ true : false;
+ }
+ dev_dbg(dp->dev, "fast link training %s\n",
+ dp->fast_train_support ? "supported" : "unsupported");
+
/* set enhanced mode if available */
analogix_dp_set_enhanced_mode(dp);
dp->link_train.lt_state = FINISHED;
@@ -627,10 +644,12 @@ static void analogix_dp_get_max_rx_lane_count(struct analogix_dp_device *dp,
*lane_count = DPCD_MAX_LANE_COUNT(data);
}
-static void analogix_dp_init_training(struct analogix_dp_device *dp,
- enum link_lane_count_type max_lane,
- int max_rate)
+static int analogix_dp_full_link_train(struct analogix_dp_device *dp,
+ u32 max_lanes, u32 max_rate)
{
+ int retval = 0;
+ bool training_finished = false;
+
/*
* MACRO_RST must be applied after the PLL_LOCK to avoid
* the DP inter pair skew issue for at least 10 us
@@ -656,18 +675,13 @@ static void analogix_dp_init_training(struct analogix_dp_device *dp,
}
/* Setup TX lane count & rate */
- if (dp->link_train.lane_count > max_lane)
- dp->link_train.lane_count = max_lane;
+ if (dp->link_train.lane_count > max_lanes)
+ dp->link_train.lane_count = max_lanes;
if (dp->link_train.link_rate > max_rate)
dp->link_train.link_rate = max_rate;
/* All DP analog module power up */
analogix_dp_set_analog_power_down(dp, POWER_ALL, 0);
-}
-
-static int analogix_dp_sw_link_training(struct analogix_dp_device *dp)
-{
- int retval = 0, training_finished = 0;
dp->link_train.lt_state = START;
@@ -702,22 +716,88 @@ static int analogix_dp_sw_link_training(struct analogix_dp_device *dp)
return retval;
}
-static int analogix_dp_set_link_train(struct analogix_dp_device *dp,
- u32 count, u32 bwtype)
+static int analogix_dp_fast_link_train(struct analogix_dp_device *dp)
{
- int i;
- int retval;
+ int i, ret;
+ u8 link_align, link_status[2];
+ enum pll_status status;
- for (i = 0; i < DP_TIMEOUT_LOOP_COUNT; i++) {
- analogix_dp_init_training(dp, count, bwtype);
- retval = analogix_dp_sw_link_training(dp);
- if (retval == 0)
- break;
+ analogix_dp_reset_macro(dp);
- usleep_range(100, 110);
+ analogix_dp_set_link_bandwidth(dp, dp->link_train.link_rate);
+ analogix_dp_set_lane_count(dp, dp->link_train.lane_count);
+
+ for (i = 0; i < dp->link_train.lane_count; i++) {
+ analogix_dp_set_lane_link_training(dp,
+ dp->link_train.training_lane[i], i);
}
- return retval;
+ ret = readx_poll_timeout(analogix_dp_get_pll_lock_status, dp, status,
+ status != PLL_UNLOCKED, 120,
+ 120 * DP_TIMEOUT_LOOP_COUNT);
+ if (ret) {
+ DRM_DEV_ERROR(dp->dev, "Wait for pll lock failed %d\n", ret);
+ return ret;
+ }
+
+ /* source Set training pattern 1 */
+ analogix_dp_set_training_pattern(dp, TRAINING_PTN1);
+ /* From DP spec, pattern must be on-screen for a minimum 500us */
+ usleep_range(500, 600);
+
+ analogix_dp_set_training_pattern(dp, TRAINING_PTN2);
+ /* From DP spec, pattern must be on-screen for a minimum 500us */
+ usleep_range(500, 600);
+
+ /* TODO: enhanced_mode?*/
+ analogix_dp_set_training_pattern(dp, DP_NONE);
+
+ /*
+ * Useful for debugging issues with fast link training, disable for more
+ * speed
+ */
+ if (verify_fast_training) {
+ ret = drm_dp_dpcd_readb(&dp->aux, DP_LANE_ALIGN_STATUS_UPDATED,
+ &link_align);
+ if (ret < 0) {
+ DRM_DEV_ERROR(dp->dev, "Read align status failed %d\n",
+ ret);
+ return ret;
+ }
+
+ ret = drm_dp_dpcd_read(&dp->aux, DP_LANE0_1_STATUS, link_status,
+ 2);
+ if (ret < 0) {
+ DRM_DEV_ERROR(dp->dev, "Read link status failed %d\n",
+ ret);
+ return ret;
+ }
+
+ if (analogix_dp_clock_recovery_ok(link_status,
+ dp->link_train.lane_count)) {
+ DRM_DEV_ERROR(dp->dev, "Clock recovery failed\n");
+ analogix_dp_reduce_link_rate(dp);
+ return -EIO;
+ }
+
+ if (analogix_dp_channel_eq_ok(link_status, link_align,
+ dp->link_train.lane_count)) {
+ DRM_DEV_ERROR(dp->dev, "Channel EQ failed\n");
+ analogix_dp_reduce_link_rate(dp);
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+static int analogix_dp_train_link(struct analogix_dp_device *dp)
+{
+ if (dp->fast_train_support)
+ return analogix_dp_fast_link_train(dp);
+
+ return analogix_dp_full_link_train(dp, dp->video_info.max_lane_count,
+ dp->video_info.max_link_rate);
}
static int analogix_dp_config_video(struct analogix_dp_device *dp)
@@ -850,10 +930,10 @@ static void analogix_dp_commit(struct analogix_dp_device *dp)
DRM_ERROR("failed to disable the panel\n");
}
- ret = analogix_dp_set_link_train(dp, dp->video_info.max_lane_count,
- dp->video_info.max_link_rate);
+ ret = readx_poll_timeout(analogix_dp_train_link, dp, ret, !ret, 100,
+ DP_TIMEOUT_TRAINING_US * 5);
if (ret) {
- dev_err(dp->dev, "unable to do link train\n");
+ dev_err(dp->dev, "unable to do link train, ret=%d\n", ret);
return;
}
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
index e135a42cb19e..920607d7eb3e 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -20,6 +20,8 @@
#define MAX_CR_LOOP 5
#define MAX_EQ_LOOP 5
+/* Training takes 22ms if AUX channel comm fails. Use this as retry interval */
+#define DP_TIMEOUT_TRAINING_US 22000
#define DP_TIMEOUT_PSR_LOOP_MS 300
/* DP_MAX_LANE_COUNT */
@@ -171,6 +173,7 @@ struct analogix_dp_device {
int hpd_gpio;
bool force_hpd;
bool psr_enable;
+ bool fast_train_support;
struct mutex panel_lock;
bool panel_is_modeset;
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 13/40] drm/bridge: analogix_dp: Move enable video into config_video()
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (9 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 11/40] drm/bridge: analogix_dp: add fast link train for eDP Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 14/40] drm/bridge: analogix_dp: Check AUX_EN status when doing AUX transfer Thierry Escande
` (18 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Lin Huang <hl@rock-chips.com>
We need to enable video before analogix_dp_is_video_stream_on(), so
we can get the right video stream status.
Cc: 征增 王 <wzz@rock-chips.com>
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 49a05eac41c1..8ef9e31c6713 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -820,11 +820,10 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
if (analogix_dp_is_slave_video_stream_clock_on(dp) == 0)
break;
if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
- dev_err(dp->dev, "Timeout of video streamclk ok\n");
+ dev_err(dp->dev, "Timeout of slave video streamclk ok\n");
return -ETIMEDOUT;
}
-
- usleep_range(1, 2);
+ usleep_range(1000, 1001);
}
/* Set to use the register calculated M/N video */
@@ -839,6 +838,9 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
/* Configure video slave mode */
analogix_dp_enable_video_master(dp, 0);
+ /* Enable video */
+ analogix_dp_start_video(dp);
+
timeout_loop = 0;
for (;;) {
@@ -952,9 +954,6 @@ static void analogix_dp_commit(struct analogix_dp_device *dp)
DRM_ERROR("failed to enable the panel\n");
}
- /* Enable video */
- analogix_dp_start_video(dp);
-
dp->psr_enable = analogix_dp_detect_sink_psr(dp);
if (dp->psr_enable)
analogix_dp_enable_sink_psr(dp);
--
2.14.1
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http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 14/40] drm/bridge: analogix_dp: Check AUX_EN status when doing AUX transfer
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (10 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 13/40] drm/bridge: analogix_dp: Move enable video into config_video() Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 15/40] drm/bridge: analogix_dp: Don't use fast link training when panel just powered up Thierry Escande
` (17 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Lin Huang <hl@rock-chips.com>
We should check AUX_EN bit to confirm the AUX CH operation is completed.
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 25 +++++++++++++----------
1 file changed, 14 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index 9df2f3ef000c..e78c861b9e06 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -1073,9 +1073,9 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
{
u32 reg;
u8 *buffer = msg->buffer;
- int timeout_loop = 0;
unsigned int i;
int num_transferred = 0;
+ int ret;
/* Buffer size of AUX CH is 16 bytes */
if (WARN_ON(msg->size > 16))
@@ -1139,17 +1139,20 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
- /* Is AUX CH command reply received? */
+ ret = readx_poll_timeout(readl, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2,
+ reg, !(reg & AUX_EN), 25, 500 * 1000);
+ if (ret) {
+ dev_err(dp->dev, "AUX CH enable timeout!\n");
+ return -ETIMEDOUT;
+ }
+
/* TODO: Wait for an interrupt instead of looping? */
- reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
- while (!(reg & RPLY_RECEIV)) {
- timeout_loop++;
- if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
- dev_err(dp->dev, "AUX CH command reply failed!\n");
- return -ETIMEDOUT;
- }
- reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
- usleep_range(10, 11);
+ /* Is AUX CH command reply received? */
+ ret = readx_poll_timeout(readl, dp->reg_base + ANALOGIX_DP_INT_STA,
+ reg, reg & RPLY_RECEIV, 10, 20 * 1000);
+ if (ret) {
+ dev_err(dp->dev, "AUX CH cmd reply timeout!\n");
+ return -ETIMEDOUT;
}
/* Clear interrupt source for AUX CH command reply */
--
2.14.1
_______________________________________________
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Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 15/40] drm/bridge: analogix_dp: Don't use fast link training when panel just powered up
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (11 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 14/40] drm/bridge: analogix_dp: Check AUX_EN status when doing AUX transfer Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 16/40] drm/bridge: analogix_dp: Retry bridge enable when it failed Thierry Escande
` (16 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz@rock-chips.com>
Panel would reset its setting when it powers down. It would forget the last
succeeded link training setting. So we can't use the last successful link
training setting to do fast link training. Let's reset fast_train_enable in
analogix_dp_bridge_disable();
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 9 +++++----
drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 2 +-
2 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 8ef9e31c6713..179c2106b8a2 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -579,14 +579,14 @@ static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
if (retval != 1) {
dev_err(dp->dev, "failed to read downspread %d\n",
retval);
- dp->fast_train_support = false;
+ dp->fast_train_enable = false;
} else {
- dp->fast_train_support =
+ dp->fast_train_enable =
(spread & DP_NO_AUX_HANDSHAKE_LINK_TRAINING) ?
true : false;
}
dev_dbg(dp->dev, "fast link training %s\n",
- dp->fast_train_support ? "supported" : "unsupported");
+ dp->fast_train_enable ? "supported" : "unsupported");
/* set enhanced mode if available */
analogix_dp_set_enhanced_mode(dp);
@@ -793,7 +793,7 @@ static int analogix_dp_fast_link_train(struct analogix_dp_device *dp)
static int analogix_dp_train_link(struct analogix_dp_device *dp)
{
- if (dp->fast_train_support)
+ if (dp->fast_train_enable)
return analogix_dp_fast_link_train(dp);
return analogix_dp_full_link_train(dp, dp->video_info.max_lane_count,
@@ -1198,6 +1198,7 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
DRM_ERROR("failed to setup the panel ret = %d\n", ret);
dp->psr_enable = false;
+ dp->fast_train_enable = false;
dp->dpms_mode = DRM_MODE_DPMS_OFF;
}
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
index 6a96ef7e6934..403ff853464b 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -173,7 +173,7 @@ struct analogix_dp_device {
int hpd_gpio;
bool force_hpd;
bool psr_enable;
- bool fast_train_support;
+ bool fast_train_enable;
struct mutex panel_lock;
bool panel_is_modeset;
--
2.14.1
_______________________________________________
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Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 16/40] drm/bridge: analogix_dp: Retry bridge enable when it failed
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (12 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 15/40] drm/bridge: analogix_dp: Don't use fast link training when panel just powered up Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 17/40] drm/bridge: analogix_dp: Wait for HPD signal before configuring link Thierry Escande
` (15 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz@rock-chips.com>
When we enable bridge failed, we have to retry it, otherwise we would get
the abnormal display.
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 65 +++++++++++++++++-----
drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 3 +-
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 5 +-
3 files changed, 56 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 179c2106b8a2..ba2506e17f6d 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -43,8 +43,10 @@ struct bridge_init {
struct device_node *node;
};
-static void analogix_dp_init_dp(struct analogix_dp_device *dp)
+static int analogix_dp_init_dp(struct analogix_dp_device *dp)
{
+ int ret;
+
analogix_dp_reset(dp);
analogix_dp_swreset(dp);
@@ -56,10 +58,13 @@ static void analogix_dp_init_dp(struct analogix_dp_device *dp)
analogix_dp_enable_sw_function(dp);
analogix_dp_config_interrupt(dp);
- analogix_dp_init_analog_func(dp);
+ ret = analogix_dp_init_analog_func(dp);
+ if (ret)
+ return ret;
analogix_dp_init_hpd(dp);
analogix_dp_init_aux(dp);
+ return 0;
}
static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
@@ -922,7 +927,7 @@ static irqreturn_t analogix_dp_irq_thread(int irq, void *arg)
return IRQ_HANDLED;
}
-static void analogix_dp_commit(struct analogix_dp_device *dp)
+static int analogix_dp_commit(struct analogix_dp_device *dp)
{
int ret;
@@ -932,11 +937,10 @@ static void analogix_dp_commit(struct analogix_dp_device *dp)
DRM_ERROR("failed to disable the panel\n");
}
- ret = readx_poll_timeout(analogix_dp_train_link, dp, ret, !ret, 100,
- DP_TIMEOUT_TRAINING_US * 5);
+ ret = analogix_dp_train_link(dp);
if (ret) {
dev_err(dp->dev, "unable to do link train, ret=%d\n", ret);
- return;
+ return ret;
}
analogix_dp_enable_scramble(dp, 1);
@@ -957,6 +961,7 @@ static void analogix_dp_commit(struct analogix_dp_device *dp)
dp->psr_enable = analogix_dp_detect_sink_psr(dp);
if (dp->psr_enable)
analogix_dp_enable_sink_psr(dp);
+ return 0;
}
/*
@@ -1150,12 +1155,9 @@ static void analogix_dp_bridge_pre_enable(struct drm_bridge *bridge)
DRM_ERROR("failed to setup the panel ret = %d\n", ret);
}
-static void analogix_dp_bridge_enable(struct drm_bridge *bridge)
+static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
{
- struct analogix_dp_device *dp = bridge->driver_private;
-
- if (dp->dpms_mode == DRM_MODE_DPMS_ON)
- return;
+ int ret;
pm_runtime_get_sync(dp->dev);
@@ -1163,11 +1165,46 @@ static void analogix_dp_bridge_enable(struct drm_bridge *bridge)
dp->plat_data->power_on(dp->plat_data);
phy_power_on(dp->phy);
- analogix_dp_init_dp(dp);
+
+ ret = analogix_dp_init_dp(dp);
+ if (ret)
+ goto out_dp_init;
+
+ ret = analogix_dp_commit(dp);
+ if (ret)
+ goto out_dp_init;
+
enable_irq(dp->irq);
- analogix_dp_commit(dp);
+ return 0;
- dp->dpms_mode = DRM_MODE_DPMS_ON;
+out_dp_init:
+ phy_power_off(dp->phy);
+ if (dp->plat_data->power_off)
+ dp->plat_data->power_off(dp->plat_data);
+ pm_runtime_put_sync(dp->dev);
+
+ return ret;
+}
+
+static void analogix_dp_bridge_enable(struct drm_bridge *bridge)
+{
+ struct analogix_dp_device *dp = bridge->driver_private;
+ int timeout_loop = 0;
+
+ if (dp->dpms_mode == DRM_MODE_DPMS_ON)
+ return;
+
+ while (timeout_loop < MAX_PLL_LOCK_LOOP) {
+ if (analogix_dp_set_bridge(dp) == 0) {
+ dp->dpms_mode = DRM_MODE_DPMS_ON;
+ return;
+ }
+ dev_err(dp->dev, "failed to set bridge, retry: %d\n",
+ timeout_loop);
+ timeout_loop++;
+ usleep_range(10, 11);
+ }
+ dev_err(dp->dev, "too many times retry set bridge, give it up\n");
}
static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
index 403ff853464b..769255dc6e99 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -19,6 +19,7 @@
#define DP_TIMEOUT_LOOP_COUNT 100
#define MAX_CR_LOOP 5
#define MAX_EQ_LOOP 5
+#define MAX_PLL_LOCK_LOOP 5
/* Training takes 22ms if AUX channel comm fails. Use this as retry interval */
#define DP_TIMEOUT_TRAINING_US 22000
@@ -197,7 +198,7 @@ void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable);
void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
enum analog_power_block block,
bool enable);
-void analogix_dp_init_analog_func(struct analogix_dp_device *dp);
+int analogix_dp_init_analog_func(struct analogix_dp_device *dp);
void analogix_dp_init_hpd(struct analogix_dp_device *dp);
void analogix_dp_force_hpd(struct analogix_dp_device *dp);
enum dp_irq_type analogix_dp_get_irq_type(struct analogix_dp_device *dp);
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index e78c861b9e06..b47c5af43560 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -333,7 +333,7 @@ void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
}
}
-void analogix_dp_init_analog_func(struct analogix_dp_device *dp)
+int analogix_dp_init_analog_func(struct analogix_dp_device *dp)
{
u32 reg;
int timeout_loop = 0;
@@ -355,7 +355,7 @@ void analogix_dp_init_analog_func(struct analogix_dp_device *dp)
timeout_loop++;
if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
dev_err(dp->dev, "failed to get pll lock status\n");
- return;
+ return -ETIMEDOUT;
}
usleep_range(10, 20);
}
@@ -366,6 +366,7 @@ void analogix_dp_init_analog_func(struct analogix_dp_device *dp)
reg &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N
| AUX_FUNC_EN_N);
writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+ return 0;
}
void analogix_dp_clear_hotplug_interrupts(struct analogix_dp_device *dp)
--
2.14.1
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^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 17/40] drm/bridge: analogix_dp: Wait for HPD signal before configuring link
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (13 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 16/40] drm/bridge: analogix_dp: Retry bridge enable when it failed Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 18/40] drm/bridge: analogix_dp: Set PD_INC_BG first when powering up edp phy Thierry Escande
` (14 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz@rock-chips.com>
According to DP spec v1.3 chap 3.5.1.2 Link Training, Link Policy Maker
must first detect that the HPD signal is asserted high by the Downstream
Device before establishing a link with it.
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index ba2506e17f6d..c940a5bb80ac 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1170,6 +1170,17 @@ static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
if (ret)
goto out_dp_init;
+ /*
+ * According to DP spec v1.3 chap 3.5.1.2 Link Training,
+ * We should first make sure the HPD signal is asserted high by device
+ * when we want to establish a link with it.
+ */
+ ret = analogix_dp_detect_hpd(dp);
+ if (ret) {
+ DRM_ERROR("failed to get hpd single ret = %d\n", ret);
+ goto out_dp_init;
+ }
+
ret = analogix_dp_commit(dp);
if (ret)
goto out_dp_init;
--
2.14.1
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^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 18/40] drm/bridge: analogix_dp: Set PD_INC_BG first when powering up edp phy
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (14 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 17/40] drm/bridge: analogix_dp: Wait for HPD signal before configuring link Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 19/40] drm/bridge: analogix_dp: Ensure edp is disabled when shutting down the panel Thierry Escande
` (13 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz@rock-chips.com>
Following the correct power up sequence:
dp_pd=ff => dp_pd=7f => wait 10us => dp_pd=00
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 10 ++++++++--
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h | 3 +++
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index b47c5af43560..bb72f8b0e603 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -321,10 +321,16 @@ void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
break;
case POWER_ALL:
if (enable) {
- reg = DP_PHY_PD | AUX_PD | CH3_PD | CH2_PD |
- CH1_PD | CH0_PD;
+ reg = DP_ALL_PD;
writel(reg, dp->reg_base + phy_pd_addr);
} else {
+ reg = DP_ALL_PD;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ usleep_range(10, 15);
+ reg &= ~DP_INC_BG;
+ writel(reg, dp->reg_base + phy_pd_addr);
+ usleep_range(10, 15);
+
writel(0x00, dp->reg_base + phy_pd_addr);
}
break;
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
index 40200c652533..9602668669f4 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
@@ -342,12 +342,15 @@
#define DP_PLL_REF_BIT_1_2500V (0x7 << 0)
/* ANALOGIX_DP_PHY_PD */
+#define DP_INC_BG (0x1 << 7)
+#define DP_EXP_BG (0x1 << 6)
#define DP_PHY_PD (0x1 << 5)
#define AUX_PD (0x1 << 4)
#define CH3_PD (0x1 << 3)
#define CH2_PD (0x1 << 2)
#define CH1_PD (0x1 << 1)
#define CH0_PD (0x1 << 0)
+#define DP_ALL_PD (0xff)
/* ANALOGIX_DP_PHY_TEST */
#define MACRO_RST (0x1 << 5)
--
2.14.1
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Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 19/40] drm/bridge: analogix_dp: Ensure edp is disabled when shutting down the panel
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (15 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 18/40] drm/bridge: analogix_dp: Set PD_INC_BG first when powering up edp phy Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 20/40] drm/bridge: analogix_dp: Extend hpd check time to 100ms Thierry Escande
` (12 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Lin Huang <hl@rock-chips.com>
When panel is shut down, we should make sure edp can be disabled to avoid
undefined behavior.
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index c940a5bb80ac..fa4ef28e286f 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1161,6 +1161,12 @@ static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
pm_runtime_get_sync(dp->dev);
+ ret = clk_prepare_enable(dp->clock);
+ if (ret < 0) {
+ DRM_ERROR("Failed to prepare_enable the clock clk [%d]\n", ret);
+ goto out_dp_clk_pre;
+ }
+
if (dp->plat_data->power_on)
dp->plat_data->power_on(dp->plat_data);
@@ -1192,6 +1198,8 @@ static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
phy_power_off(dp->phy);
if (dp->plat_data->power_off)
dp->plat_data->power_off(dp->plat_data);
+ clk_disable_unprepare(dp->clock);
+out_dp_clk_pre:
pm_runtime_put_sync(dp->dev);
return ret;
@@ -1235,10 +1243,13 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
disable_irq(dp->irq);
phy_power_off(dp->phy);
+ analogix_dp_set_analog_power_down(dp, POWER_ALL, 1);
if (dp->plat_data->power_off)
dp->plat_data->power_off(dp->plat_data);
+ clk_disable_unprepare(dp->clock);
+
pm_runtime_put_sync(dp->dev);
ret = analogix_dp_prepare_panel(dp, false, true);
--
2.14.1
_______________________________________________
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Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 20/40] drm/bridge: analogix_dp: Extend hpd check time to 100ms
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (16 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 19/40] drm/bridge: analogix_dp: Ensure edp is disabled when shutting down the panel Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 21/40] drm/bridge: analogix_dp: Fix incorrect usage of enhanced mode Thierry Escande
` (11 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Lin Huang <hl@rock-chips.com>
There was a 1ms delay to detect the hpd signal, which is too short to
detect a short pulse. This patch extends this delay to 100ms.
Cc: Stéphane Marchesin <marcheu@chromium.org>
Cc: 征增 王 <wzz@rock-chips.com>
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index fa4ef28e286f..9df92dc54dbe 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -76,7 +76,7 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
return 0;
timeout_loop++;
- usleep_range(10, 11);
+ usleep_range(1000, 1100);
}
/*
--
2.14.1
_______________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 21/40] drm/bridge: analogix_dp: Fix incorrect usage of enhanced mode
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (17 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 20/40] drm/bridge: analogix_dp: Extend hpd check time to 100ms Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 22/40] drm/bridge: analogix_dp: Check dpcd write/read status Thierry Escande
` (10 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Enhanced mode is required by the eDP 1.2 specification, and not doing it
early could result in a period of time where we have a link transmitting
idle packets without it. Since there is no reason to disable it, we just
enable it at the beginning of link training and then keep it on all the
time.
Cc: Tomasz Figa <tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
Reviewed-by: Andrzej Hajda <a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 9df92dc54dbe..846574d0dcb0 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -281,6 +281,8 @@ static int analogix_dp_link_start(struct analogix_dp_device *dp)
retval = drm_dp_dpcd_write(&dp->aux, DP_LINK_BW_SET, buf, 2);
if (retval < 0)
return retval;
+ /* set enhanced mode if available */
+ analogix_dp_set_enhanced_mode(dp);
/* Set TX pre-emphasis to minimum */
for (lane = 0; lane < lane_count; lane++)
@@ -593,8 +595,6 @@ static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
dev_dbg(dp->dev, "fast link training %s\n",
dp->fast_train_enable ? "supported" : "unsupported");
- /* set enhanced mode if available */
- analogix_dp_set_enhanced_mode(dp);
dp->link_train.lt_state = FINISHED;
return 0;
@@ -944,8 +944,6 @@ static int analogix_dp_commit(struct analogix_dp_device *dp)
}
analogix_dp_enable_scramble(dp, 1);
- analogix_dp_enable_rx_to_enhanced_mode(dp, 1);
- analogix_dp_enable_enhanced_mode(dp, 1);
analogix_dp_init_video(dp);
ret = analogix_dp_config_video(dp);
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 22/40] drm/bridge: analogix_dp: Check dpcd write/read status
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (18 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 21/40] drm/bridge: analogix_dp: Fix incorrect usage of enhanced mode Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 24/40] drm/bridge: analogix_dp: Reset aux channel if an error occurred Thierry Escande
` (9 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Lin Huang <hl-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
We need to check the dpcd write/read return value to see whether the
write/read was successful
Cc: Kristian H. Kristensen <hoegsberg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Lin Huang <hl-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Signed-off-by: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Signed-off-by: Douglas Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
Reviewed-by: Andrzej Hajda <a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 181 +++++++++++++++------
1 file changed, 132 insertions(+), 49 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 846574d0dcb0..501f7b4a23d6 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -160,80 +160,135 @@ int analogix_dp_disable_psr(struct analogix_dp_device *dp)
}
EXPORT_SYMBOL_GPL(analogix_dp_disable_psr);
-static bool analogix_dp_detect_sink_psr(struct analogix_dp_device *dp)
+static int analogix_dp_detect_sink_psr(struct analogix_dp_device *dp)
{
unsigned char psr_version;
+ int ret;
+
+ ret = drm_dp_dpcd_readb(&dp->aux, DP_PSR_SUPPORT, &psr_version);
+ if (ret != 1) {
+ dev_err(dp->dev, "failed to get PSR version, disable it\n");
+ return ret;
+ }
- drm_dp_dpcd_readb(&dp->aux, DP_PSR_SUPPORT, &psr_version);
dev_dbg(dp->dev, "Panel PSR version : %x\n", psr_version);
- return (psr_version & DP_PSR_IS_SUPPORTED) ? true : false;
+ dp->psr_enable = (psr_version & DP_PSR_IS_SUPPORTED) ? true : false;
+
+ return 0;
}
-static void analogix_dp_enable_sink_psr(struct analogix_dp_device *dp)
+static int analogix_dp_enable_sink_psr(struct analogix_dp_device *dp)
{
unsigned char psr_en;
+ int ret;
/* Disable psr function */
- drm_dp_dpcd_readb(&dp->aux, DP_PSR_EN_CFG, &psr_en);
+ ret = drm_dp_dpcd_readb(&dp->aux, DP_PSR_EN_CFG, &psr_en);
+ if (ret != 1) {
+ dev_err(dp->dev, "failed to get psr config\n");
+ goto end;
+ }
+
psr_en &= ~DP_PSR_ENABLE;
- drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+ ret = drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+ if (ret != 1) {
+ dev_err(dp->dev, "failed to disable panel psr\n");
+ goto end;
+ }
/* Main-Link transmitter remains active during PSR active states */
psr_en = DP_PSR_MAIN_LINK_ACTIVE | DP_PSR_CRC_VERIFICATION;
- drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+ ret = drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+ if (ret != 1) {
+ dev_err(dp->dev, "failed to set panel psr\n");
+ goto end;
+ }
/* Enable psr function */
psr_en = DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE |
DP_PSR_CRC_VERIFICATION;
- drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+ ret = drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+ if (ret != 1) {
+ dev_err(dp->dev, "failed to set panel psr\n");
+ goto end;
+ }
analogix_dp_enable_psr_crc(dp);
+
+ return 0;
+end:
+ dev_err(dp->dev, "enable psr fail, force to disable psr\n");
+ dp->psr_enable = false;
+
+ return ret;
}
-static void
+static int
analogix_dp_enable_rx_to_enhanced_mode(struct analogix_dp_device *dp,
bool enable)
{
u8 data;
+ int ret;
- drm_dp_dpcd_readb(&dp->aux, DP_LANE_COUNT_SET, &data);
+ ret = drm_dp_dpcd_readb(&dp->aux, DP_LANE_COUNT_SET, &data);
+ if (ret < 0)
+ return ret;
if (enable)
- drm_dp_dpcd_writeb(&dp->aux, DP_LANE_COUNT_SET,
- DP_LANE_COUNT_ENHANCED_FRAME_EN |
- DPCD_LANE_COUNT_SET(data));
+ ret = drm_dp_dpcd_writeb(&dp->aux, DP_LANE_COUNT_SET,
+ DP_LANE_COUNT_ENHANCED_FRAME_EN |
+ DPCD_LANE_COUNT_SET(data));
else
- drm_dp_dpcd_writeb(&dp->aux, DP_LANE_COUNT_SET,
- DPCD_LANE_COUNT_SET(data));
+ ret = drm_dp_dpcd_writeb(&dp->aux, DP_LANE_COUNT_SET,
+ DPCD_LANE_COUNT_SET(data));
+
+ return ret < 0 ? ret : 0;
}
-static int analogix_dp_is_enhanced_mode_available(struct analogix_dp_device *dp)
+static int analogix_dp_is_enhanced_mode_available(struct analogix_dp_device *dp,
+ u8 *enhanced_mode_support)
{
u8 data;
- int retval;
+ int ret;
- drm_dp_dpcd_readb(&dp->aux, DP_MAX_LANE_COUNT, &data);
- retval = DPCD_ENHANCED_FRAME_CAP(data);
+ ret = drm_dp_dpcd_readb(&dp->aux, DP_MAX_LANE_COUNT, &data);
+ if (ret < 0)
+ return ret;
- return retval;
+ *enhanced_mode_support = DPCD_ENHANCED_FRAME_CAP(data);
+
+ return 0;
}
-static void analogix_dp_set_enhanced_mode(struct analogix_dp_device *dp)
+static int analogix_dp_set_enhanced_mode(struct analogix_dp_device *dp)
{
u8 data;
+ int ret;
+
+ ret = analogix_dp_is_enhanced_mode_available(dp, &data);
+ if (ret < 0)
+ return ret;
+
+ ret = analogix_dp_enable_rx_to_enhanced_mode(dp, data);
+ if (ret < 0)
+ return ret;
- data = analogix_dp_is_enhanced_mode_available(dp);
- analogix_dp_enable_rx_to_enhanced_mode(dp, data);
analogix_dp_enable_enhanced_mode(dp, data);
+
+ return 0;
}
-static void analogix_dp_training_pattern_dis(struct analogix_dp_device *dp)
+static int analogix_dp_training_pattern_dis(struct analogix_dp_device *dp)
{
+ int retval;
+
analogix_dp_set_training_pattern(dp, DP_NONE);
- drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
- DP_TRAINING_PATTERN_DISABLE);
+ retval = drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
+ DP_TRAINING_PATTERN_DISABLE);
+
+ return retval < 0 ? retval : 0;
}
static void
@@ -282,7 +337,11 @@ static int analogix_dp_link_start(struct analogix_dp_device *dp)
if (retval < 0)
return retval;
/* set enhanced mode if available */
- analogix_dp_set_enhanced_mode(dp);
+ retval = analogix_dp_set_enhanced_mode(dp);
+ if (retval < 0) {
+ dev_err(dp->dev, "failed to set enhance mode\n");
+ return retval;
+ }
/* Set TX pre-emphasis to minimum */
for (lane = 0; lane < lane_count; lane++)
@@ -567,10 +626,11 @@ static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
if (!analogix_dp_channel_eq_ok(link_status, link_align, lane_count)) {
/* traing pattern Set to Normal */
- analogix_dp_training_pattern_dis(dp);
+ retval = analogix_dp_training_pattern_dis(dp);
+ if (retval < 0)
+ return retval;
dev_info(dp->dev, "Link Training success!\n");
-
analogix_dp_get_link_bandwidth(dp, ®);
dp->link_train.link_rate = reg;
dev_dbg(dp->dev, "final bandwidth = %.2x\n",
@@ -807,7 +867,6 @@ static int analogix_dp_train_link(struct analogix_dp_device *dp)
static int analogix_dp_config_video(struct analogix_dp_device *dp)
{
- int retval = 0;
int timeout_loop = 0;
int done_count = 0;
@@ -825,8 +884,9 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
if (analogix_dp_is_slave_video_stream_clock_on(dp) == 0)
break;
if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
- dev_err(dp->dev, "Timeout of slave video streamclk ok\n");
- return -ETIMEDOUT;
+ dev_warn(dp->dev,
+ "Ignoring timeout of slave video streamclk ok\n");
+ break;
}
usleep_range(1000, 1001);
}
@@ -865,30 +925,38 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
usleep_range(1000, 1001);
}
- if (retval != 0)
- dev_err(dp->dev, "Video stream is not detected!\n");
-
- return retval;
+ return 0;
}
-static void analogix_dp_enable_scramble(struct analogix_dp_device *dp,
- bool enable)
+static int analogix_dp_enable_scramble(struct analogix_dp_device *dp,
+ bool enable)
{
u8 data;
+ int ret;
if (enable) {
analogix_dp_enable_scrambling(dp);
- drm_dp_dpcd_readb(&dp->aux, DP_TRAINING_PATTERN_SET, &data);
- drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
+ ret = drm_dp_dpcd_readb(&dp->aux, DP_TRAINING_PATTERN_SET,
+ &data);
+ if (ret != 1)
+ return ret;
+
+ ret = drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
(u8)(data & ~DP_LINK_SCRAMBLING_DISABLE));
} else {
analogix_dp_disable_scrambling(dp);
- drm_dp_dpcd_readb(&dp->aux, DP_TRAINING_PATTERN_SET, &data);
- drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
+ ret = drm_dp_dpcd_readb(&dp->aux, DP_TRAINING_PATTERN_SET,
+ &data);
+ if (ret != 1)
+ return ret;
+
+ ret = drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
(u8)(data | DP_LINK_SCRAMBLING_DISABLE));
}
+
+ return ret < 0 ? ret : 0;
}
static irqreturn_t analogix_dp_hardirq(int irq, void *arg)
@@ -943,23 +1011,36 @@ static int analogix_dp_commit(struct analogix_dp_device *dp)
return ret;
}
- analogix_dp_enable_scramble(dp, 1);
+ ret = analogix_dp_enable_scramble(dp, 1);
+ if (ret < 0) {
+ dev_err(dp->dev, "can not enable scramble\n");
+ return ret;
+ }
analogix_dp_init_video(dp);
ret = analogix_dp_config_video(dp);
- if (ret)
+ if (ret) {
dev_err(dp->dev, "unable to config video\n");
+ return ret;
+ }
/* Safe to enable the panel now */
if (dp->plat_data->panel) {
- if (drm_panel_enable(dp->plat_data->panel))
+ ret = drm_panel_enable(dp->plat_data->panel);
+ if (ret) {
DRM_ERROR("failed to enable the panel\n");
+ return ret;
+ }
}
- dp->psr_enable = analogix_dp_detect_sink_psr(dp);
+ ret = analogix_dp_detect_sink_psr(dp);
+ if (ret)
+ return ret;
+
if (dp->psr_enable)
- analogix_dp_enable_sink_psr(dp);
- return 0;
+ ret = analogix_dp_enable_sink_psr(dp);
+
+ return ret;
}
/*
@@ -1186,8 +1267,10 @@ static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
}
ret = analogix_dp_commit(dp);
- if (ret)
+ if (ret) {
+ DRM_ERROR("dp commit error, ret = %d\n", ret);
goto out_dp_init;
+ }
enable_irq(dp->irq);
return 0;
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 24/40] drm/bridge: analogix_dp: Reset aux channel if an error occurred
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (19 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 22/40] drm/bridge: analogix_dp: Check dpcd write/read status Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:15 ` [PATCH 25/40] drm/rockchip: Restore psr->state when enable/disable psr failed Thierry Escande
` (8 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Lin Huang <hl@rock-chips.com>
AUX errors are caused by many different reasons. We may not know what
happened in aux channel on failure, so let's reset aux channel if some
errors occurred.
Cc: 征增 王 <wzz@rock-chips.com>
Cc: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index dee1ba109b5f..7b7fd227e1f9 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -466,6 +466,10 @@ void analogix_dp_init_aux(struct analogix_dp_device *dp)
reg = RPLY_RECEIV | AUX_ERR;
writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA);
+ analogix_dp_set_analog_power_down(dp, AUX_BLOCK, true);
+ usleep_range(10, 11);
+ analogix_dp_set_analog_power_down(dp, AUX_BLOCK, false);
+
analogix_dp_reset_aux(dp);
/* Disable AUX transaction H/W retry */
@@ -1159,7 +1163,7 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
reg, !(reg & AUX_EN), 25, 500 * 1000);
if (ret) {
dev_err(dp->dev, "AUX CH enable timeout!\n");
- return -ETIMEDOUT;
+ goto aux_error;
}
/* TODO: Wait for an interrupt instead of looping? */
@@ -1168,7 +1172,7 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
reg, reg & RPLY_RECEIV, 10, 20 * 1000);
if (ret) {
dev_err(dp->dev, "AUX CH cmd reply timeout!\n");
- return -ETIMEDOUT;
+ goto aux_error;
}
/* Clear interrupt source for AUX CH command reply */
@@ -1178,7 +1182,7 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
if (reg & AUX_ERR) {
writel(AUX_ERR, dp->reg_base + ANALOGIX_DP_INT_STA);
- return -EREMOTEIO;
+ goto aux_error;
}
/* Check AUX CH error access status */
@@ -1186,7 +1190,7 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
if ((reg & AUX_STATUS_MASK)) {
dev_err(dp->dev, "AUX CH error happened: %d\n\n",
reg & AUX_STATUS_MASK);
- return -EREMOTEIO;
+ goto aux_error;
}
if (msg->request & DP_AUX_I2C_READ) {
@@ -1212,4 +1216,10 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
msg->reply = DP_AUX_NATIVE_REPLY_ACK;
return num_transferred > 0 ? num_transferred : -EBUSY;
+
+aux_error:
+ /* if aux err happen, reset aux */
+ analogix_dp_init_aux(dp);
+
+ return -EREMOTEIO;
}
--
2.14.1
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 25/40] drm/rockchip: Restore psr->state when enable/disable psr failed
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (20 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 24/40] drm/bridge: analogix_dp: Reset aux channel if an error occurred Thierry Escande
@ 2018-01-15 17:15 ` Thierry Escande
2018-01-15 17:16 ` [PATCH 26/40] drm/bridge: analogix_dp: Don't use ANALOGIX_DP_PLL_CTL to control pll Thierry Escande
` (7 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:15 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
If we failed disable psr, it would hang the display until next psr
cycle coming. So we should restore psr->state when it failed.
Cc: Tomasz Figa <tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Signed-off-by: Douglas Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 4 +++-
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 10 +++++-----
drivers/gpu/drm/rockchip/rockchip_drm_psr.c | 20 +++++++++++++-------
drivers/gpu/drm/rockchip/rockchip_drm_psr.h | 2 +-
4 files changed, 22 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 501f7b4a23d6..b2e369073854 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -153,8 +153,10 @@ int analogix_dp_disable_psr(struct analogix_dp_device *dp)
psr_vsc.DB1 = 0;
ret = drm_dp_dpcd_writeb(&dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
- if (ret != 1)
+ if (ret != 1) {
dev_err(dp->dev, "Failed to set DP Power0 %d\n", ret);
+ return ret;
+ }
return analogix_dp_send_psr_spd(dp, &psr_vsc, false);
}
diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 3e8bf79bea58..8c884f9ce713 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -77,13 +77,13 @@ struct rockchip_dp_device {
struct analogix_dp_plat_data plat_data;
};
-static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
+static int analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
{
struct rockchip_dp_device *dp = to_dp(encoder);
int ret;
if (!analogix_dp_psr_enabled(dp->adp))
- return;
+ return 0;
DRM_DEV_DEBUG(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit");
@@ -91,13 +91,13 @@ static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
PSR_WAIT_LINE_FLAG_TIMEOUT_MS);
if (ret) {
DRM_DEV_ERROR(dp->dev, "line flag interrupt did not arrive\n");
- return;
+ return -ETIMEDOUT;
}
if (enabled)
- analogix_dp_enable_psr(dp->adp);
+ return analogix_dp_enable_psr(dp->adp);
else
- analogix_dp_disable_psr(dp->adp);
+ return analogix_dp_disable_psr(dp->adp);
}
static int rockchip_dp_pre_init(struct rockchip_dp_device *dp)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
index b339ca943139..9376f4396b6b 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c
@@ -36,7 +36,7 @@ struct psr_drv {
struct delayed_work flush_work;
- void (*set)(struct drm_encoder *encoder, bool enable);
+ int (*set)(struct drm_encoder *encoder, bool enable);
};
static struct psr_drv *find_psr_by_crtc(struct drm_crtc *crtc)
@@ -93,19 +93,25 @@ static void psr_set_state_locked(struct psr_drv *psr, enum psr_state state)
return;
}
- psr->state = state;
-
/* Actually commit the state change to hardware */
- switch (psr->state) {
+ switch (state) {
case PSR_ENABLE:
- psr->set(psr->encoder, true);
+ if (psr->set(psr->encoder, true))
+ return;
break;
case PSR_DISABLE:
case PSR_FLUSH:
- psr->set(psr->encoder, false);
+ if (psr->set(psr->encoder, false))
+ return;
break;
+
+ default:
+ pr_err("%s: Unknown state %d\n", __func__, state);
+ return;
}
+
+ psr->state = state;
}
static void psr_set_state(struct psr_drv *psr, enum psr_state state)
@@ -229,7 +235,7 @@ EXPORT_SYMBOL(rockchip_drm_psr_flush_all);
* Zero on success, negative errno on failure.
*/
int rockchip_drm_psr_register(struct drm_encoder *encoder,
- void (*psr_set)(struct drm_encoder *, bool enable))
+ int (*psr_set)(struct drm_encoder *, bool enable))
{
struct rockchip_drm_private *drm_drv = encoder->dev->dev_private;
struct psr_drv *psr;
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h
index b1ea0155e57c..06537ee27565 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h
@@ -22,7 +22,7 @@ int rockchip_drm_psr_activate(struct drm_encoder *encoder);
int rockchip_drm_psr_deactivate(struct drm_encoder *encoder);
int rockchip_drm_psr_register(struct drm_encoder *encoder,
- void (*psr_set)(struct drm_encoder *, bool enable));
+ int (*psr_set)(struct drm_encoder *, bool enable));
void rockchip_drm_psr_unregister(struct drm_encoder *encoder);
#endif /* __ROCKCHIP_DRM_PSR__ */
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 26/40] drm/bridge: analogix_dp: Don't use ANALOGIX_DP_PLL_CTL to control pll
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (21 preceding siblings ...)
2018-01-15 17:15 ` [PATCH 25/40] drm/rockchip: Restore psr->state when enable/disable psr failed Thierry Escande
@ 2018-01-15 17:16 ` Thierry Escande
2018-01-15 17:16 ` [PATCH 27/40] drm/bridge: analogix_dp: Fix timeout of video streamclk config Thierry Escande
` (6 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:16 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
There is no register named ANALOGIX_DP_PLL_CTL in Rockchip edp phy reg
list. We should use BIT_4 in ANALOGIX_DP_PD to control the pll power
instead of ANALOGIX_DP_PLL_CTL.
Cc: Douglas Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
Reviewed-by: Andrzej Hajda <a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index 7b7fd227e1f9..02ab1aaa9993 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -230,16 +230,20 @@ enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp)
void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable)
{
u32 reg;
+ u32 mask = DP_PLL_PD;
+ u32 pd_addr = ANALOGIX_DP_PLL_CTL;
- if (enable) {
- reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
- reg |= DP_PLL_PD;
- writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
- } else {
- reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
- reg &= ~DP_PLL_PD;
- writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
+ if (dp->plat_data && is_rockchip(dp->plat_data->dev_type)) {
+ pd_addr = ANALOGIX_DP_PD;
+ mask = RK_PLL_PD;
}
+
+ reg = readl(dp->reg_base + pd_addr);
+ if (enable)
+ reg |= mask;
+ else
+ reg &= ~mask;
+ writel(reg, dp->reg_base + pd_addr);
}
void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 27/40] drm/bridge: analogix_dp: Fix timeout of video streamclk config
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (22 preceding siblings ...)
2018-01-15 17:16 ` [PATCH 26/40] drm/bridge: analogix_dp: Don't use ANALOGIX_DP_PLL_CTL to control pll Thierry Escande
@ 2018-01-15 17:16 ` Thierry Escande
2018-01-15 17:16 ` [PATCH 28/40] drm/bridge: analogix_dp: Fix incorrect operations with register ANALOGIX_DP_FUNC_EN_1 Thierry Escande
` (5 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:16 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
The STRM_VALID bit in register ANALOGIX_DP_SYS_CTL_3 may be unstable,
so we may hit the error log "Timeout of video streamclk ok" since
checked this unstable bit.
In fact, we can go continue and the streamclk is ok if we wait enough time,
it does no effect on display.
Let's change this error to warn.
Cc: Douglas Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
Reviewed-by: Andrzej Hajda <a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index b2e369073854..e7ab871e62b5 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -886,9 +886,8 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
if (analogix_dp_is_slave_video_stream_clock_on(dp) == 0)
break;
if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
- dev_warn(dp->dev,
- "Ignoring timeout of slave video streamclk ok\n");
- break;
+ dev_err(dp->dev, "Timeout of slave video streamclk ok\n");
+ return -ETIMEDOUT;
}
usleep_range(1000, 1001);
}
@@ -920,8 +919,9 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
done_count = 0;
}
if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
- dev_err(dp->dev, "Timeout of video streamclk ok\n");
- return -ETIMEDOUT;
+ dev_warn(dp->dev,
+ "Ignoring timeout of video streamclk ok\n");
+ break;
}
usleep_range(1000, 1001);
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 28/40] drm/bridge: analogix_dp: Fix incorrect operations with register ANALOGIX_DP_FUNC_EN_1
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (23 preceding siblings ...)
2018-01-15 17:16 ` [PATCH 27/40] drm/bridge: analogix_dp: Fix timeout of video streamclk config Thierry Escande
@ 2018-01-15 17:16 ` Thierry Escande
2018-01-15 17:16 ` [PATCH 33/40] drm/rockchip: analogix_dp: Wire the shutdown callback to disable PSR Thierry Escande
` (4 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:16 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Register ANALOGIX_DP_FUNC_EN_1(offset 0x18), Rockchip is different to
Exynos:
on Exynos edp phy,
BIT 7 MASTER_VID_FUNC_EN_N
BIT 6 reserved
BIT 5 SLAVE_VID_FUNC_EN_N
on Rockchip edp phy,
BIT 7 reserved
BIT 6 RK_VID_CAP_FUNC_EN_N
BIT 5 RK_VID_FIFO_FUNC_EN_N
So, we should do some private operations to Rockchip.
Cc: Tomasz Figa <tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: zain wang <wzz-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
Reviewed-by: Andrzej Hajda <a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 19 ++++++++++++++-----
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h | 2 ++
2 files changed, 16 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index 02ab1aaa9993..4eae206ec31b 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -126,9 +126,14 @@ void analogix_dp_reset(struct analogix_dp_device *dp)
analogix_dp_stop_video(dp);
analogix_dp_enable_video_mute(dp, 0);
- reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
- AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N |
- HDCP_FUNC_EN_N | SW_FUNC_EN_N;
+ if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
+ reg = RK_VID_CAP_FUNC_EN_N | RK_VID_FIFO_FUNC_EN_N |
+ SW_FUNC_EN_N;
+ else
+ reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
+ AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N |
+ HDCP_FUNC_EN_N | SW_FUNC_EN_N;
+
writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
reg = SSC_FUNC_EN_N | AUX_FUNC_EN_N |
@@ -971,8 +976,12 @@ void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp)
u32 reg;
reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
- reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
- reg |= MASTER_VID_FUNC_EN_N;
+ if (dp->plat_data && is_rockchip(dp->plat_data->dev_type)) {
+ reg &= ~(RK_VID_CAP_FUNC_EN_N | RK_VID_FIFO_FUNC_EN_N);
+ } else {
+ reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
+ reg |= MASTER_VID_FUNC_EN_N;
+ }
writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
index b633a4a5082a..0cf27c731727 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
@@ -127,7 +127,9 @@
/* ANALOGIX_DP_FUNC_EN_1 */
#define MASTER_VID_FUNC_EN_N (0x1 << 7)
+#define RK_VID_CAP_FUNC_EN_N (0x1 << 6)
#define SLAVE_VID_FUNC_EN_N (0x1 << 5)
+#define RK_VID_FIFO_FUNC_EN_N (0x1 << 5)
#define AUD_FIFO_FUNC_EN_N (0x1 << 4)
#define AUD_FUNC_EN_N (0x1 << 3)
#define HDCP_FUNC_EN_N (0x1 << 2)
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 33/40] drm/rockchip: analogix_dp: Wire the shutdown callback to disable PSR
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (24 preceding siblings ...)
2018-01-15 17:16 ` [PATCH 28/40] drm/bridge: analogix_dp: Fix incorrect operations with register ANALOGIX_DP_FUNC_EN_1 Thierry Escande
@ 2018-01-15 17:16 ` Thierry Escande
2018-01-15 17:16 ` [PATCH 34/40] drm/bridge: analogix_dp: Reorder plat_data->power_off to happen sooner Thierry Escande
` (3 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:16 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Tomasz Figa <tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
We have to disable PSR before shutdown to avoid any asynchronous PSR
code to interfere with Rockchip DRM device shutdown. We use the recently
added analogix_dp_shutdown() function and rockchip_dp_cleanup() we
already use for unregistering PSR at unbind time.
Cc: Kristian H. Kristensen <hoegsberg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Cc: Brian Norris <briannorris-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Tomasz Figa <tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
---
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 8c884f9ce713..bd2ff2c429e9 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -415,6 +415,13 @@ static int rockchip_dp_resume(struct device *dev)
}
#endif
+static void rockchip_dp_shutdown(struct platform_device *pdev)
+{
+ struct rockchip_dp_device *dp = dev_get_drvdata(&pdev->dev);
+
+ analogix_dp_shutdown(dp->adp);
+}
+
static const struct dev_pm_ops rockchip_dp_pm_ops = {
#ifdef CONFIG_PM_SLEEP
.suspend = rockchip_dp_suspend,
@@ -446,6 +453,7 @@ MODULE_DEVICE_TABLE(of, rockchip_dp_dt_ids);
struct platform_driver rockchip_dp_driver = {
.probe = rockchip_dp_probe,
.remove = rockchip_dp_remove,
+ .shutdown = rockchip_dp_shutdown,
.driver = {
.name = "rockchip-dp",
.pm = &rockchip_dp_pm_ops,
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 34/40] drm/bridge: analogix_dp: Reorder plat_data->power_off to happen sooner
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (25 preceding siblings ...)
2018-01-15 17:16 ` [PATCH 33/40] drm/rockchip: analogix_dp: Wire the shutdown callback to disable PSR Thierry Escande
@ 2018-01-15 17:16 ` Thierry Escande
2018-01-15 17:16 ` [PATCH 35/40] drm/bridge: analogix_dp: Properly log AUX CH errors Thierry Escande
` (2 subsequent siblings)
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:16 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Douglas Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
The current user of the analogix power_off is "analogix_dp-rockchip".
That driver does this:
- deactivate PSR
- turn off a clock
Both of these things (especially deactive PSR) should be done before
we turn the PHY power off and turn off analog power. Let's move the
callback up.
Note that without this patch (and with
https://patchwork.kernel.org/patch/9553349/ [seanpaul: this patch was
not applied, but it seems like the race can still occur]), I experienced
an error in reboot testing where one thread was at:
rockchip_drm_psr_deactivate
rockchip_dp_powerdown
analogix_dp_bridge_disable
drm_bridge_disable
...and the other thread was at:
analogix_dp_send_psr_spd
analogix_dp_enable_psr
analogix_dp_psr_set
psr_flush_handler
The flush handler thread was finding AUX channel errors and eventually
reported "Failed to apply PSR", where I had a kgdb breakpoint. Presumably
the device would have eventually given up and shut down anyway, but it
seems better to fix the order to be more correct.
Cc: Kristian H. Kristensen <hoegsberg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Douglas Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Sean Paul <seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Thierry Escande <thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
Reviewed-by: Andrzej Hajda <a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index a83140fa3448..12c97e0a8dcd 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1335,12 +1335,13 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
}
disable_irq(dp->irq);
- phy_power_off(dp->phy);
- analogix_dp_set_analog_power_down(dp, POWER_ALL, 1);
if (dp->plat_data->power_off)
dp->plat_data->power_off(dp->plat_data);
+ phy_power_off(dp->phy);
+ analogix_dp_set_analog_power_down(dp, POWER_ALL, 1);
+
clk_disable_unprepare(dp->clock);
pm_runtime_put_sync(dp->dev);
--
2.14.1
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 35/40] drm/bridge: analogix_dp: Properly log AUX CH errors
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (26 preceding siblings ...)
2018-01-15 17:16 ` [PATCH 34/40] drm/bridge: analogix_dp: Reorder plat_data->power_off to happen sooner Thierry Escande
@ 2018-01-15 17:16 ` Thierry Escande
2018-01-15 17:16 ` [PATCH 36/40] drm/bridge: analogix_dp: Properly disable aux chan retries on rockchip Thierry Escande
2018-01-15 17:16 ` [PATCH 37/40] drm/panel: simple: Change mode for Sharp lq123p1jx31 Thierry Escande
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:16 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Douglas Anderson <dianders@chromium.org>
The code in analogix_dp_transfer() that was supposed to print out:
AUX CH error happened
Was actually dead code. That's because the previous check (whether
the interrupt status indicated any errors) would have hit for all
errors anyway.
Let's combine the two error checks so we can actually see AUX CH
errors. We'll also downgrade the message to a warning since some of
these types of errors might be expected for some displays. If this
gets too noisy we can downgrade again to debug.
Cc: 征增 王 <wzz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index 4eae206ec31b..58e8a28e99aa 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -1105,6 +1105,7 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
struct drm_dp_aux_msg *msg)
{
u32 reg;
+ u32 status_reg;
u8 *buffer = msg->buffer;
unsigned int i;
int num_transferred = 0;
@@ -1193,16 +1194,12 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
/* Clear interrupt source for AUX CH access error */
reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
- if (reg & AUX_ERR) {
+ status_reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_STA);
+ if ((reg & AUX_ERR) || (status_reg & AUX_STATUS_MASK)) {
writel(AUX_ERR, dp->reg_base + ANALOGIX_DP_INT_STA);
- goto aux_error;
- }
- /* Check AUX CH error access status */
- reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_STA);
- if ((reg & AUX_STATUS_MASK)) {
- dev_err(dp->dev, "AUX CH error happened: %d\n\n",
- reg & AUX_STATUS_MASK);
+ dev_warn(dp->dev, "AUX CH error happened: %#x (%d)\n",
+ status_reg & AUX_STATUS_MASK, !!(reg & AUX_ERR));
goto aux_error;
}
--
2.14.1
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 36/40] drm/bridge: analogix_dp: Properly disable aux chan retries on rockchip
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (27 preceding siblings ...)
2018-01-15 17:16 ` [PATCH 35/40] drm/bridge: analogix_dp: Properly log AUX CH errors Thierry Escande
@ 2018-01-15 17:16 ` Thierry Escande
2018-01-15 17:16 ` [PATCH 37/40] drm/panel: simple: Change mode for Sharp lq123p1jx31 Thierry Escande
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:16 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Douglas Anderson <dianders@chromium.org>
The comments in analogix_dp_init_aux() claim that we're disabling aux
channel retries, but then right below it for Rockchip it sets them to
3. If we actually need 3 retries for Rockchip then we could adjust
the comment, but it seems more likely that we want the same retry
behavior across all platforms.
Cc: Stéphane Marchesin <marcheu@chromium.org>
Cc: 征增 王 <wzz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index 58e8a28e99aa..a5f2763d72e4 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -481,15 +481,16 @@ void analogix_dp_init_aux(struct analogix_dp_device *dp)
analogix_dp_reset_aux(dp);
- /* Disable AUX transaction H/W retry */
+ /* AUX_BIT_PERIOD_EXPECTED_DELAY doesn't apply to Rockchip IP */
if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
- reg = AUX_BIT_PERIOD_EXPECTED_DELAY(0) |
- AUX_HW_RETRY_COUNT_SEL(3) |
- AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
+ reg = 0;
else
- reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) |
- AUX_HW_RETRY_COUNT_SEL(0) |
- AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
+ reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3);
+
+ /* Disable AUX transaction H/W retry */
+ reg |= AUX_HW_RETRY_COUNT_SEL(0) |
+ AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
+
writel(reg, dp->reg_base + ANALOGIX_DP_AUX_HW_RETRY_CTL);
/* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */
--
2.14.1
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 46+ messages in thread* [PATCH 37/40] drm/panel: simple: Change mode for Sharp lq123p1jx31
[not found] ` <20180115171614.14474-1-thierry.escande-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
` (28 preceding siblings ...)
2018-01-15 17:16 ` [PATCH 36/40] drm/bridge: analogix_dp: Properly disable aux chan retries on rockchip Thierry Escande
@ 2018-01-15 17:16 ` Thierry Escande
29 siblings, 0 replies; 46+ messages in thread
From: Thierry Escande @ 2018-01-15 17:16 UTC (permalink / raw)
To: Archit Taneja, Inki Dae, Thierry Reding, Sandy Huang, Sean Paul,
David Airlie
Cc: zain wang, Lin Huang, linux-kernel-u79uwXL29TY76Z2rM5mHXA,
Douglas Anderson, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Tomasz Figa, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
Yakir Yang, Ørjan Eide, Mark Yao, Haixia Shi
From: Sean Paul <seanpaul@chromium.org>
Change the mode for Sharp lq123p1jx31 panel to something more
rockchip-friendly such that we can use the fixed PLLs to
generate the pixel clock
Cc: Chris Zhong <zyw@rock-chips.com>
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
---
drivers/gpu/drm/panel/panel-simple.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 5591984a392b..a4a6ea3ca0e6 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -1742,17 +1742,18 @@ static const struct panel_desc sharp_lq101k1ly04 = {
};
static const struct drm_display_mode sharp_lq123p1jx31_mode = {
- .clock = 252750,
+ .clock = 266667,
.hdisplay = 2400,
.hsync_start = 2400 + 48,
.hsync_end = 2400 + 48 + 32,
- .htotal = 2400 + 48 + 32 + 80,
+ .htotal = 2400 + 48 + 32 + 139,
.vdisplay = 1600,
.vsync_start = 1600 + 3,
.vsync_end = 1600 + 3 + 10,
- .vtotal = 1600 + 3 + 10 + 33,
+ .vtotal = 1600 + 3 + 10 + 84,
.vrefresh = 60,
.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+ .type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER,
};
static const struct panel_desc sharp_lq123p1jx31 = {
--
2.14.1
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