* [PATCH 01/11] drm/mgag200: Set DDC timeout in milliseconds
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
@ 2024-04-03 9:24 ` Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 02/11] drm/mgag200: Bind I2C lifetime to DRM device Thomas Zimmermann
` (10 subsequent siblings)
11 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-03 9:24 UTC (permalink / raw
To: airlied, jfalempe, maarten.lankhorst, mripard, airlied, daniel,
jani.nikula
Cc: dri-devel, Thomas Zimmermann, stable
Compute the i2c timeout in jiffies from a value in milliseconds. The
original values of 2 jiffies equals 2 milliseconds if HZ has been
configured to a value of 1000. This corresponds to 2.2 milliseconds
used by most other DRM drivers. Update mgag200 accordingly.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 414c45310625 ("mgag200: initial g200se driver (v2)")
Cc: Dave Airlie <airlied@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v3.5+
---
drivers/gpu/drm/mgag200/mgag200_i2c.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_i2c.c b/drivers/gpu/drm/mgag200/mgag200_i2c.c
index 423eb302be7eb..1029fef590f9b 100644
--- a/drivers/gpu/drm/mgag200/mgag200_i2c.c
+++ b/drivers/gpu/drm/mgag200/mgag200_i2c.c
@@ -114,7 +114,7 @@ int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c)
i2c->adapter.algo_data = &i2c->bit;
i2c->bit.udelay = 10;
- i2c->bit.timeout = 2;
+ i2c->bit.timeout = usecs_to_jiffies(2200);
i2c->bit.data = i2c;
i2c->bit.setsda = mga_gpio_setsda;
i2c->bit.setscl = mga_gpio_setscl;
--
2.44.0
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 02/11] drm/mgag200: Bind I2C lifetime to DRM device
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 01/11] drm/mgag200: Set DDC timeout in milliseconds Thomas Zimmermann
@ 2024-04-03 9:24 ` Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 03/11] drm/mgag200: Store pointer to struct mga_device in struct mga_i2c_chan Thomas Zimmermann
` (9 subsequent siblings)
11 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-03 9:24 UTC (permalink / raw
To: airlied, jfalempe, maarten.lankhorst, mripard, airlied, daniel,
jani.nikula
Cc: dri-devel, Thomas Zimmermann, stable
Managed cleanup with devm_add_action_or_reset() will release the I2C
adapter when the underlying Linux device goes away. But the connector
still refers to it, so this cleanup leaves behind a stale pointer
in struct drm_connector.ddc.
Bind the lifetime of the I2C adapter to the connector's lifetime by
using DRM's managed release. When the DRM device goes away (after
the Linux device) DRM will first clean up the connector and then
clean up the I2C adapter.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: b279df242972 ("drm/mgag200: Switch I2C code to managed cleanup")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v6.0+
---
drivers/gpu/drm/mgag200/mgag200_i2c.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_i2c.c b/drivers/gpu/drm/mgag200/mgag200_i2c.c
index 1029fef590f9b..4caeb68f3010c 100644
--- a/drivers/gpu/drm/mgag200/mgag200_i2c.c
+++ b/drivers/gpu/drm/mgag200/mgag200_i2c.c
@@ -31,6 +31,8 @@
#include <linux/i2c.h>
#include <linux/pci.h>
+#include <drm/drm_managed.h>
+
#include "mgag200_drv.h"
static int mga_i2c_read_gpio(struct mga_device *mdev)
@@ -86,7 +88,7 @@ static int mga_gpio_getscl(void *data)
return (mga_i2c_read_gpio(mdev) & i2c->clock) ? 1 : 0;
}
-static void mgag200_i2c_release(void *res)
+static void mgag200_i2c_release(struct drm_device *dev, void *res)
{
struct mga_i2c_chan *i2c = res;
@@ -125,5 +127,5 @@ int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c)
if (ret)
return ret;
- return devm_add_action_or_reset(dev->dev, mgag200_i2c_release, i2c);
+ return drmm_add_action_or_reset(dev, mgag200_i2c_release, i2c);
}
--
2.44.0
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 03/11] drm/mgag200: Store pointer to struct mga_device in struct mga_i2c_chan
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 01/11] drm/mgag200: Set DDC timeout in milliseconds Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 02/11] drm/mgag200: Bind I2C lifetime to DRM device Thomas Zimmermann
@ 2024-04-03 9:24 ` Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 04/11] drm/mgag200: Allocate instance of struct mga_i2c_chan dynamically Thomas Zimmermann
` (8 subsequent siblings)
11 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-03 9:24 UTC (permalink / raw
To: airlied, jfalempe, maarten.lankhorst, mripard, airlied, daniel,
jani.nikula
Cc: dri-devel, Thomas Zimmermann
Avoid upcasting to struct mga_device in i2c code by storing the
pointer directly. No functional changes.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/mgag200/mgag200_drv.h | 2 +-
drivers/gpu/drm/mgag200/mgag200_i2c.c | 18 +++++++++---------
2 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h
index 765e49fd89111..f419dae9c4325 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@@ -191,7 +191,7 @@ static inline struct mgag200_crtc_state *to_mgag200_crtc_state(struct drm_crtc_s
struct mga_i2c_chan {
struct i2c_adapter adapter;
- struct drm_device *dev;
+ struct mga_device *mdev;
struct i2c_algo_bit_data bit;
int data, clock;
};
diff --git a/drivers/gpu/drm/mgag200/mgag200_i2c.c b/drivers/gpu/drm/mgag200/mgag200_i2c.c
index 4caeb68f3010c..effd7c057fce0 100644
--- a/drivers/gpu/drm/mgag200/mgag200_i2c.c
+++ b/drivers/gpu/drm/mgag200/mgag200_i2c.c
@@ -63,29 +63,29 @@ static inline void mga_i2c_set(struct mga_device *mdev, int mask, int state)
static void mga_gpio_setsda(void *data, int state)
{
struct mga_i2c_chan *i2c = data;
- struct mga_device *mdev = to_mga_device(i2c->dev);
- mga_i2c_set(mdev, i2c->data, state);
+
+ mga_i2c_set(i2c->mdev, i2c->data, state);
}
static void mga_gpio_setscl(void *data, int state)
{
struct mga_i2c_chan *i2c = data;
- struct mga_device *mdev = to_mga_device(i2c->dev);
- mga_i2c_set(mdev, i2c->clock, state);
+
+ mga_i2c_set(i2c->mdev, i2c->clock, state);
}
static int mga_gpio_getsda(void *data)
{
struct mga_i2c_chan *i2c = data;
- struct mga_device *mdev = to_mga_device(i2c->dev);
- return (mga_i2c_read_gpio(mdev) & i2c->data) ? 1 : 0;
+
+ return (mga_i2c_read_gpio(i2c->mdev) & i2c->data) ? 1 : 0;
}
static int mga_gpio_getscl(void *data)
{
struct mga_i2c_chan *i2c = data;
- struct mga_device *mdev = to_mga_device(i2c->dev);
- return (mga_i2c_read_gpio(mdev) & i2c->clock) ? 1 : 0;
+
+ return (mga_i2c_read_gpio(i2c->mdev) & i2c->clock) ? 1 : 0;
}
static void mgag200_i2c_release(struct drm_device *dev, void *res)
@@ -109,7 +109,7 @@ int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c)
i2c->clock = BIT(info->i2c.clock_bit);
i2c->adapter.owner = THIS_MODULE;
i2c->adapter.dev.parent = dev->dev;
- i2c->dev = dev;
+ i2c->mdev = mdev;
i2c_set_adapdata(&i2c->adapter, i2c);
snprintf(i2c->adapter.name, sizeof(i2c->adapter.name), "mga i2c");
--
2.44.0
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 04/11] drm/mgag200: Allocate instance of struct mga_i2c_chan dynamically
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
` (2 preceding siblings ...)
2024-04-03 9:24 ` [PATCH 03/11] drm/mgag200: Store pointer to struct mga_device in struct mga_i2c_chan Thomas Zimmermann
@ 2024-04-03 9:24 ` Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 05/11] drm/mgag200: Inline mgag200_i2c_init() Thomas Zimmermann
` (7 subsequent siblings)
11 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-03 9:24 UTC (permalink / raw
To: airlied, jfalempe, maarten.lankhorst, mripard, airlied, daniel,
jani.nikula
Cc: dri-devel, Thomas Zimmermann
Allocate instances of struct mga_i2c_chan in mgag200_ddc_create()
and return a pointer to the contained i2c adapter. The callers of
the function are now independent from struct mga_i2c_chan.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/mgag200/mgag200_ddc.h | 11 +++++++++++
drivers/gpu/drm/mgag200/mgag200_drv.h | 4 ----
drivers/gpu/drm/mgag200/mgag200_g200.c | 11 ++++++-----
drivers/gpu/drm/mgag200/mgag200_g200eh.c | 11 ++++++-----
drivers/gpu/drm/mgag200/mgag200_g200eh3.c | 11 ++++++-----
drivers/gpu/drm/mgag200/mgag200_g200er.c | 11 ++++++-----
drivers/gpu/drm/mgag200/mgag200_g200ev.c | 11 ++++++-----
drivers/gpu/drm/mgag200/mgag200_g200ew3.c | 11 ++++++-----
drivers/gpu/drm/mgag200/mgag200_g200se.c | 11 ++++++-----
drivers/gpu/drm/mgag200/mgag200_g200wb.c | 11 ++++++-----
drivers/gpu/drm/mgag200/mgag200_i2c.c | 20 +++++++++++++++++++-
drivers/gpu/drm/mgag200/mgag200_mode.c | 1 +
12 files changed, 79 insertions(+), 45 deletions(-)
create mode 100644 drivers/gpu/drm/mgag200/mgag200_ddc.h
diff --git a/drivers/gpu/drm/mgag200/mgag200_ddc.h b/drivers/gpu/drm/mgag200/mgag200_ddc.h
new file mode 100644
index 0000000000000..fa21d197cc783
--- /dev/null
+++ b/drivers/gpu/drm/mgag200/mgag200_ddc.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __MGAG200_DDC_H__
+#define __MGAG200_DDC_H__
+
+struct i2c_adapter;
+struct mga_device;
+
+struct i2c_adapter *mgag200_ddc_create(struct mga_device *mdev);
+
+#endif
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h
index f419dae9c4325..663a740034447 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@@ -294,7 +294,6 @@ struct mga_device {
struct drm_plane primary_plane;
struct drm_crtc crtc;
struct drm_encoder encoder;
- struct mga_i2c_chan i2c;
struct drm_connector connector;
};
@@ -448,7 +447,4 @@ int mgag200_mode_config_init(struct mga_device *mdev, resource_size_t vram_avail
void mgag200_bmc_disable_vidrst(struct mga_device *mdev);
void mgag200_bmc_enable_vidrst(struct mga_device *mdev);
- /* mgag200_i2c.c */
-int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c);
-
#endif /* __MGAG200_DRV_H__ */
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200.c b/drivers/gpu/drm/mgag200/mgag200_g200.c
index bf5d7fe525a3f..39a29d8ffca6e 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200.c
@@ -9,6 +9,7 @@
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
+#include "mgag200_ddc.h"
#include "mgag200_drv.h"
static int mgag200_g200_init_pci_options(struct pci_dev *pdev)
@@ -201,8 +202,8 @@ static int mgag200_g200_pipeline_init(struct mga_device *mdev)
struct drm_plane *primary_plane = &mdev->primary_plane;
struct drm_crtc *crtc = &mdev->crtc;
struct drm_encoder *encoder = &mdev->encoder;
- struct mga_i2c_chan *i2c = &mdev->i2c;
struct drm_connector *connector = &mdev->connector;
+ struct i2c_adapter *ddc;
int ret;
ret = drm_universal_plane_init(dev, primary_plane, 0,
@@ -238,16 +239,16 @@ static int mgag200_g200_pipeline_init(struct mga_device *mdev)
return ret;
}
- ret = mgag200_i2c_init(mdev, i2c);
- if (ret) {
+ ddc = mgag200_ddc_create(mdev);
+ if (IS_ERR(ddc)) {
+ ret = PTR_ERR(ddc);
drm_err(dev, "failed to add DDC bus: %d\n", ret);
return ret;
}
ret = drm_connector_init_with_ddc(dev, connector,
&mgag200_g200_vga_connector_funcs,
- DRM_MODE_CONNECTOR_VGA,
- &i2c->adapter);
+ DRM_MODE_CONNECTOR_VGA, ddc);
if (ret) {
drm_err(dev, "drm_connector_init_with_ddc() failed: %d\n", ret);
return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200eh.c b/drivers/gpu/drm/mgag200/mgag200_g200eh.c
index fad62453a91db..619fee7ffdf5e 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200eh.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200eh.c
@@ -9,6 +9,7 @@
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
+#include "mgag200_ddc.h"
#include "mgag200_drv.h"
void mgag200_g200eh_init_registers(struct mga_device *mdev)
@@ -200,8 +201,8 @@ static int mgag200_g200eh_pipeline_init(struct mga_device *mdev)
struct drm_plane *primary_plane = &mdev->primary_plane;
struct drm_crtc *crtc = &mdev->crtc;
struct drm_encoder *encoder = &mdev->encoder;
- struct mga_i2c_chan *i2c = &mdev->i2c;
struct drm_connector *connector = &mdev->connector;
+ struct i2c_adapter *ddc;
int ret;
ret = drm_universal_plane_init(dev, primary_plane, 0,
@@ -237,16 +238,16 @@ static int mgag200_g200eh_pipeline_init(struct mga_device *mdev)
return ret;
}
- ret = mgag200_i2c_init(mdev, i2c);
- if (ret) {
+ ddc = mgag200_ddc_create(mdev);
+ if (IS_ERR(ddc)) {
+ ret = PTR_ERR(ddc);
drm_err(dev, "failed to add DDC bus: %d\n", ret);
return ret;
}
ret = drm_connector_init_with_ddc(dev, connector,
&mgag200_g200eh_vga_connector_funcs,
- DRM_MODE_CONNECTOR_VGA,
- &i2c->adapter);
+ DRM_MODE_CONNECTOR_VGA, ddc);
if (ret) {
drm_err(dev, "drm_connector_init_with_ddc() failed: %d\n", ret);
return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200eh3.c b/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
index 0f7d8112cd49f..a172b8a4500a0 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
@@ -8,6 +8,7 @@
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
+#include "mgag200_ddc.h"
#include "mgag200_drv.h"
/*
@@ -104,8 +105,8 @@ static int mgag200_g200eh3_pipeline_init(struct mga_device *mdev)
struct drm_plane *primary_plane = &mdev->primary_plane;
struct drm_crtc *crtc = &mdev->crtc;
struct drm_encoder *encoder = &mdev->encoder;
- struct mga_i2c_chan *i2c = &mdev->i2c;
struct drm_connector *connector = &mdev->connector;
+ struct i2c_adapter *ddc;
int ret;
ret = drm_universal_plane_init(dev, primary_plane, 0,
@@ -141,16 +142,16 @@ static int mgag200_g200eh3_pipeline_init(struct mga_device *mdev)
return ret;
}
- ret = mgag200_i2c_init(mdev, i2c);
- if (ret) {
+ ddc = mgag200_ddc_create(mdev);
+ if (IS_ERR(ddc)) {
+ ret = PTR_ERR(ddc);
drm_err(dev, "failed to add DDC bus: %d\n", ret);
return ret;
}
ret = drm_connector_init_with_ddc(dev, connector,
&mgag200_g200eh3_vga_connector_funcs,
- DRM_MODE_CONNECTOR_VGA,
- &i2c->adapter);
+ DRM_MODE_CONNECTOR_VGA, ddc);
if (ret) {
drm_err(dev, "drm_connector_init_with_ddc() failed: %d\n", ret);
return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200er.c b/drivers/gpu/drm/mgag200/mgag200_g200er.c
index 8d4538b710477..a11c91331e43e 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200er.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200er.c
@@ -9,6 +9,7 @@
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
+#include "mgag200_ddc.h"
#include "mgag200_drv.h"
static void mgag200_g200er_init_registers(struct mga_device *mdev)
@@ -243,8 +244,8 @@ static int mgag200_g200er_pipeline_init(struct mga_device *mdev)
struct drm_plane *primary_plane = &mdev->primary_plane;
struct drm_crtc *crtc = &mdev->crtc;
struct drm_encoder *encoder = &mdev->encoder;
- struct mga_i2c_chan *i2c = &mdev->i2c;
struct drm_connector *connector = &mdev->connector;
+ struct i2c_adapter *ddc;
int ret;
ret = drm_universal_plane_init(dev, primary_plane, 0,
@@ -280,16 +281,16 @@ static int mgag200_g200er_pipeline_init(struct mga_device *mdev)
return ret;
}
- ret = mgag200_i2c_init(mdev, i2c);
- if (ret) {
+ ddc = mgag200_ddc_create(mdev);
+ if (IS_ERR(ddc)) {
+ ret = PTR_ERR(ddc);
drm_err(dev, "failed to add DDC bus: %d\n", ret);
return ret;
}
ret = drm_connector_init_with_ddc(dev, connector,
&mgag200_g200er_vga_connector_funcs,
- DRM_MODE_CONNECTOR_VGA,
- &i2c->adapter);
+ DRM_MODE_CONNECTOR_VGA, ddc);
if (ret) {
drm_err(dev, "drm_connector_init_with_ddc() failed: %d\n", ret);
return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200ev.c b/drivers/gpu/drm/mgag200/mgag200_g200ev.c
index 56e6f986bff31..dfb641b83842a 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200ev.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200ev.c
@@ -9,6 +9,7 @@
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
+#include "mgag200_ddc.h"
#include "mgag200_drv.h"
static void mgag200_g200ev_init_registers(struct mga_device *mdev)
@@ -244,8 +245,8 @@ static int mgag200_g200ev_pipeline_init(struct mga_device *mdev)
struct drm_plane *primary_plane = &mdev->primary_plane;
struct drm_crtc *crtc = &mdev->crtc;
struct drm_encoder *encoder = &mdev->encoder;
- struct mga_i2c_chan *i2c = &mdev->i2c;
struct drm_connector *connector = &mdev->connector;
+ struct i2c_adapter *ddc;
int ret;
ret = drm_universal_plane_init(dev, primary_plane, 0,
@@ -281,16 +282,16 @@ static int mgag200_g200ev_pipeline_init(struct mga_device *mdev)
return ret;
}
- ret = mgag200_i2c_init(mdev, i2c);
- if (ret) {
+ ddc = mgag200_ddc_create(mdev);
+ if (IS_ERR(ddc)) {
+ ret = PTR_ERR(ddc);
drm_err(dev, "failed to add DDC bus: %d\n", ret);
return ret;
}
ret = drm_connector_init_with_ddc(dev, connector,
&mgag200_g200ev_vga_connector_funcs,
- DRM_MODE_CONNECTOR_VGA,
- &i2c->adapter);
+ DRM_MODE_CONNECTOR_VGA, ddc);
if (ret) {
drm_err(dev, "drm_connector_init_with_ddc() failed: %d\n", ret);
return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200ew3.c b/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
index 170934414d7dd..525b7f75e6228 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
@@ -8,6 +8,7 @@
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
+#include "mgag200_ddc.h"
#include "mgag200_drv.h"
static void mgag200_g200ew3_init_registers(struct mga_device *mdev)
@@ -113,8 +114,8 @@ static int mgag200_g200ew3_pipeline_init(struct mga_device *mdev)
struct drm_plane *primary_plane = &mdev->primary_plane;
struct drm_crtc *crtc = &mdev->crtc;
struct drm_encoder *encoder = &mdev->encoder;
- struct mga_i2c_chan *i2c = &mdev->i2c;
struct drm_connector *connector = &mdev->connector;
+ struct i2c_adapter *ddc;
int ret;
ret = drm_universal_plane_init(dev, primary_plane, 0,
@@ -150,16 +151,16 @@ static int mgag200_g200ew3_pipeline_init(struct mga_device *mdev)
return ret;
}
- ret = mgag200_i2c_init(mdev, i2c);
- if (ret) {
+ ddc = mgag200_ddc_create(mdev);
+ if (IS_ERR(ddc)) {
+ ret = PTR_ERR(ddc);
drm_err(dev, "failed to add DDC bus: %d\n", ret);
return ret;
}
ret = drm_connector_init_with_ddc(dev, connector,
&mgag200_g200ew3_vga_connector_funcs,
- DRM_MODE_CONNECTOR_VGA,
- &i2c->adapter);
+ DRM_MODE_CONNECTOR_VGA, ddc);
if (ret) {
drm_err(dev, "drm_connector_init_with_ddc() failed: %d\n", ret);
return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200se.c b/drivers/gpu/drm/mgag200/mgag200_g200se.c
index ff2b3c6622e7a..ef7606b529ea1 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200se.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200se.c
@@ -9,6 +9,7 @@
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
+#include "mgag200_ddc.h"
#include "mgag200_drv.h"
static int mgag200_g200se_init_pci_options(struct pci_dev *pdev)
@@ -375,8 +376,8 @@ static int mgag200_g200se_pipeline_init(struct mga_device *mdev)
struct drm_plane *primary_plane = &mdev->primary_plane;
struct drm_crtc *crtc = &mdev->crtc;
struct drm_encoder *encoder = &mdev->encoder;
- struct mga_i2c_chan *i2c = &mdev->i2c;
struct drm_connector *connector = &mdev->connector;
+ struct i2c_adapter *ddc;
int ret;
ret = drm_universal_plane_init(dev, primary_plane, 0,
@@ -412,16 +413,16 @@ static int mgag200_g200se_pipeline_init(struct mga_device *mdev)
return ret;
}
- ret = mgag200_i2c_init(mdev, i2c);
- if (ret) {
+ ddc = mgag200_ddc_create(mdev);
+ if (IS_ERR(ddc)) {
+ ret = PTR_ERR(ddc);
drm_err(dev, "failed to add DDC bus: %d\n", ret);
return ret;
}
ret = drm_connector_init_with_ddc(dev, connector,
&mgag200_g200se_vga_connector_funcs,
- DRM_MODE_CONNECTOR_VGA,
- &i2c->adapter);
+ DRM_MODE_CONNECTOR_VGA, ddc);
if (ret) {
drm_err(dev, "drm_connector_init_with_ddc() failed: %d\n", ret);
return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200wb.c b/drivers/gpu/drm/mgag200/mgag200_g200wb.c
index 9baa727ac6f9f..e4def62b1e575 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200wb.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200wb.c
@@ -9,6 +9,7 @@
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_probe_helper.h>
+#include "mgag200_ddc.h"
#include "mgag200_drv.h"
void mgag200_g200wb_init_registers(struct mga_device *mdev)
@@ -247,8 +248,8 @@ static int mgag200_g200wb_pipeline_init(struct mga_device *mdev)
struct drm_plane *primary_plane = &mdev->primary_plane;
struct drm_crtc *crtc = &mdev->crtc;
struct drm_encoder *encoder = &mdev->encoder;
- struct mga_i2c_chan *i2c = &mdev->i2c;
struct drm_connector *connector = &mdev->connector;
+ struct i2c_adapter *ddc;
int ret;
ret = drm_universal_plane_init(dev, primary_plane, 0,
@@ -284,16 +285,16 @@ static int mgag200_g200wb_pipeline_init(struct mga_device *mdev)
return ret;
}
- ret = mgag200_i2c_init(mdev, i2c);
- if (ret) {
+ ddc = mgag200_ddc_create(mdev);
+ if (IS_ERR(ddc)) {
+ ret = PTR_ERR(ddc);
drm_err(dev, "failed to add DDC bus: %d\n", ret);
return ret;
}
ret = drm_connector_init_with_ddc(dev, connector,
&mgag200_g200wb_vga_connector_funcs,
- DRM_MODE_CONNECTOR_VGA,
- &i2c->adapter);
+ DRM_MODE_CONNECTOR_VGA, ddc);
if (ret) {
drm_err(dev, "drm_connector_init_with_ddc() failed: %d\n", ret);
return ret;
diff --git a/drivers/gpu/drm/mgag200/mgag200_i2c.c b/drivers/gpu/drm/mgag200/mgag200_i2c.c
index effd7c057fce0..46fa9f1b4e469 100644
--- a/drivers/gpu/drm/mgag200/mgag200_i2c.c
+++ b/drivers/gpu/drm/mgag200/mgag200_i2c.c
@@ -33,6 +33,7 @@
#include <drm/drm_managed.h>
+#include "mgag200_ddc.h"
#include "mgag200_drv.h"
static int mga_i2c_read_gpio(struct mga_device *mdev)
@@ -95,7 +96,7 @@ static void mgag200_i2c_release(struct drm_device *dev, void *res)
i2c_del_adapter(&i2c->adapter);
}
-int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c)
+static int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c)
{
struct drm_device *dev = &mdev->base;
const struct mgag200_device_info *info = mdev->info;
@@ -129,3 +130,20 @@ int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c)
return drmm_add_action_or_reset(dev, mgag200_i2c_release, i2c);
}
+
+struct i2c_adapter *mgag200_ddc_create(struct mga_device *mdev)
+{
+ struct mga_i2c_chan *i2c;
+ struct drm_device *dev = &mdev->base;
+ int ret;
+
+ i2c = drmm_kzalloc(dev, sizeof(*i2c), GFP_KERNEL);
+ if (!i2c)
+ return ERR_PTR(-ENOMEM);
+
+ ret = mgag200_i2c_init(mdev, i2c);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return &i2c->adapter;
+}
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index e17cb4c5f7741..4ca2f4cba1077 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -23,6 +23,7 @@
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_print.h>
+#include "mgag200_ddc.h"
#include "mgag200_drv.h"
/*
--
2.44.0
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 05/11] drm/mgag200: Inline mgag200_i2c_init()
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
` (3 preceding siblings ...)
2024-04-03 9:24 ` [PATCH 04/11] drm/mgag200: Allocate instance of struct mga_i2c_chan dynamically Thomas Zimmermann
@ 2024-04-03 9:24 ` Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 06/11] drm/mgag200: Replace struct mga_i2c_chan with struct mgag200_ddc Thomas Zimmermann
` (6 subsequent siblings)
11 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-03 9:24 UTC (permalink / raw
To: airlied, jfalempe, maarten.lankhorst, mripard, airlied, daniel,
jani.nikula
Cc: dri-devel, Thomas Zimmermann
The function mgag200_i2c_init() is an internal helper that sets
up the i2c data structure. Inline its code into the only caller.
Rearrange the individual steps to separate among i2c algorithm,
adapter and fields in struct mga_i2c_chan.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/mgag200/mgag200_i2c.c | 62 +++++++++++++--------------
1 file changed, 29 insertions(+), 33 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_i2c.c b/drivers/gpu/drm/mgag200/mgag200_i2c.c
index 46fa9f1b4e469..ba7aeca55fb40 100644
--- a/drivers/gpu/drm/mgag200/mgag200_i2c.c
+++ b/drivers/gpu/drm/mgag200/mgag200_i2c.c
@@ -96,54 +96,50 @@ static void mgag200_i2c_release(struct drm_device *dev, void *res)
i2c_del_adapter(&i2c->adapter);
}
-static int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c)
+struct i2c_adapter *mgag200_ddc_create(struct mga_device *mdev)
{
struct drm_device *dev = &mdev->base;
const struct mgag200_device_info *info = mdev->info;
+ struct mga_i2c_chan *i2c;
+ struct i2c_algo_bit_data *bit;
+ struct i2c_adapter *adapter;
int ret;
+ i2c = drmm_kzalloc(dev, sizeof(*i2c), GFP_KERNEL);
+ if (!i2c)
+ return ERR_PTR(-ENOMEM);
+
WREG_DAC(MGA1064_GEN_IO_CTL2, 1);
WREG_DAC(MGA1064_GEN_IO_DATA, 0xff);
WREG_DAC(MGA1064_GEN_IO_CTL, 0);
+ i2c->mdev = mdev;
i2c->data = BIT(info->i2c.data_bit);
i2c->clock = BIT(info->i2c.clock_bit);
- i2c->adapter.owner = THIS_MODULE;
- i2c->adapter.dev.parent = dev->dev;
- i2c->mdev = mdev;
- i2c_set_adapdata(&i2c->adapter, i2c);
- snprintf(i2c->adapter.name, sizeof(i2c->adapter.name), "mga i2c");
-
- i2c->adapter.algo_data = &i2c->bit;
- i2c->bit.udelay = 10;
- i2c->bit.timeout = usecs_to_jiffies(2200);
- i2c->bit.data = i2c;
- i2c->bit.setsda = mga_gpio_setsda;
- i2c->bit.setscl = mga_gpio_setscl;
- i2c->bit.getsda = mga_gpio_getsda;
- i2c->bit.getscl = mga_gpio_getscl;
-
- ret = i2c_bit_add_bus(&i2c->adapter);
+ bit = &i2c->bit;
+ bit->data = i2c;
+ bit->setsda = mga_gpio_setsda;
+ bit->setscl = mga_gpio_setscl;
+ bit->getsda = mga_gpio_getsda;
+ bit->getscl = mga_gpio_getscl;
+ bit->udelay = 10;
+ bit->timeout = usecs_to_jiffies(2200);
+
+ adapter = &i2c->adapter;
+ adapter->owner = THIS_MODULE;
+ adapter->algo_data = bit;
+ adapter->dev.parent = dev->dev;
+ snprintf(adapter->name, sizeof(adapter->name), "mga i2c");
+ i2c_set_adapdata(adapter, i2c);
+
+ ret = i2c_bit_add_bus(adapter);
if (ret)
- return ret;
-
- return drmm_add_action_or_reset(dev, mgag200_i2c_release, i2c);
-}
-
-struct i2c_adapter *mgag200_ddc_create(struct mga_device *mdev)
-{
- struct mga_i2c_chan *i2c;
- struct drm_device *dev = &mdev->base;
- int ret;
-
- i2c = drmm_kzalloc(dev, sizeof(*i2c), GFP_KERNEL);
- if (!i2c)
- return ERR_PTR(-ENOMEM);
+ return ERR_PTR(ret);
- ret = mgag200_i2c_init(mdev, i2c);
+ ret = drmm_add_action_or_reset(dev, mgag200_i2c_release, i2c);
if (ret)
return ERR_PTR(ret);
- return &i2c->adapter;
+ return adapter;
}
--
2.44.0
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 06/11] drm/mgag200: Replace struct mga_i2c_chan with struct mgag200_ddc
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
` (4 preceding siblings ...)
2024-04-03 9:24 ` [PATCH 05/11] drm/mgag200: Inline mgag200_i2c_init() Thomas Zimmermann
@ 2024-04-03 9:24 ` Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 07/11] drm/mgag200: Rename mgag200_i2c.c to mgag200_ddc.c Thomas Zimmermann
` (5 subsequent siblings)
11 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-03 9:24 UTC (permalink / raw
To: airlied, jfalempe, maarten.lankhorst, mripard, airlied, daniel,
jani.nikula
Cc: dri-devel, Thomas Zimmermann
Rename struct mga_i2c_chan to struct mgag200_ddc, define it in the
source file mgag200_i2c.c, and reorder its fields. Rename all related
variables from i2c to ddc. Also rename the i2c adapter accordingly.
Using the term 'ddc' documents the purpose of the code clearly. The
old term 'i2c' could refer to any functionality on an i2c bus. No
functional changes.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/mgag200/mgag200_drv.h | 10 -----
drivers/gpu/drm/mgag200/mgag200_i2c.c | 56 ++++++++++++++++-----------
2 files changed, 33 insertions(+), 33 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h
index 663a740034447..7bd8790d4eb03 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@@ -10,9 +10,6 @@
#ifndef __MGAG200_DRV_H__
#define __MGAG200_DRV_H__
-#include <linux/i2c-algo-bit.h>
-#include <linux/i2c.h>
-
#include <video/vga.h>
#include <drm/drm_connector.h>
@@ -189,13 +186,6 @@ static inline struct mgag200_crtc_state *to_mgag200_crtc_state(struct drm_crtc_s
return container_of(base, struct mgag200_crtc_state, base);
}
-struct mga_i2c_chan {
- struct i2c_adapter adapter;
- struct mga_device *mdev;
- struct i2c_algo_bit_data bit;
- int data, clock;
-};
-
enum mga_type {
G200_PCI,
G200_AGP,
diff --git a/drivers/gpu/drm/mgag200/mgag200_i2c.c b/drivers/gpu/drm/mgag200/mgag200_i2c.c
index ba7aeca55fb40..73ff94c91ca36 100644
--- a/drivers/gpu/drm/mgag200/mgag200_i2c.c
+++ b/drivers/gpu/drm/mgag200/mgag200_i2c.c
@@ -36,6 +36,16 @@
#include "mgag200_ddc.h"
#include "mgag200_drv.h"
+struct mgag200_ddc {
+ struct mga_device *mdev;
+
+ int data;
+ int clock;
+
+ struct i2c_algo_bit_data bit;
+ struct i2c_adapter adapter;
+};
+
static int mga_i2c_read_gpio(struct mga_device *mdev)
{
WREG8(DAC_INDEX, MGA1064_GEN_IO_DATA);
@@ -63,62 +73,62 @@ static inline void mga_i2c_set(struct mga_device *mdev, int mask, int state)
static void mga_gpio_setsda(void *data, int state)
{
- struct mga_i2c_chan *i2c = data;
+ struct mgag200_ddc *ddc = data;
- mga_i2c_set(i2c->mdev, i2c->data, state);
+ mga_i2c_set(ddc->mdev, ddc->data, state);
}
static void mga_gpio_setscl(void *data, int state)
{
- struct mga_i2c_chan *i2c = data;
+ struct mgag200_ddc *ddc = data;
- mga_i2c_set(i2c->mdev, i2c->clock, state);
+ mga_i2c_set(ddc->mdev, ddc->clock, state);
}
static int mga_gpio_getsda(void *data)
{
- struct mga_i2c_chan *i2c = data;
+ struct mgag200_ddc *ddc = data;
- return (mga_i2c_read_gpio(i2c->mdev) & i2c->data) ? 1 : 0;
+ return (mga_i2c_read_gpio(ddc->mdev) & ddc->data) ? 1 : 0;
}
static int mga_gpio_getscl(void *data)
{
- struct mga_i2c_chan *i2c = data;
+ struct mgag200_ddc *ddc = data;
- return (mga_i2c_read_gpio(i2c->mdev) & i2c->clock) ? 1 : 0;
+ return (mga_i2c_read_gpio(ddc->mdev) & ddc->clock) ? 1 : 0;
}
-static void mgag200_i2c_release(struct drm_device *dev, void *res)
+static void mgag200_ddc_release(struct drm_device *dev, void *res)
{
- struct mga_i2c_chan *i2c = res;
+ struct mgag200_ddc *ddc = res;
- i2c_del_adapter(&i2c->adapter);
+ i2c_del_adapter(&ddc->adapter);
}
struct i2c_adapter *mgag200_ddc_create(struct mga_device *mdev)
{
struct drm_device *dev = &mdev->base;
const struct mgag200_device_info *info = mdev->info;
- struct mga_i2c_chan *i2c;
+ struct mgag200_ddc *ddc;
struct i2c_algo_bit_data *bit;
struct i2c_adapter *adapter;
int ret;
- i2c = drmm_kzalloc(dev, sizeof(*i2c), GFP_KERNEL);
- if (!i2c)
+ ddc = drmm_kzalloc(dev, sizeof(*ddc), GFP_KERNEL);
+ if (!ddc)
return ERR_PTR(-ENOMEM);
WREG_DAC(MGA1064_GEN_IO_CTL2, 1);
WREG_DAC(MGA1064_GEN_IO_DATA, 0xff);
WREG_DAC(MGA1064_GEN_IO_CTL, 0);
- i2c->mdev = mdev;
- i2c->data = BIT(info->i2c.data_bit);
- i2c->clock = BIT(info->i2c.clock_bit);
+ ddc->mdev = mdev;
+ ddc->data = BIT(info->i2c.data_bit);
+ ddc->clock = BIT(info->i2c.clock_bit);
- bit = &i2c->bit;
- bit->data = i2c;
+ bit = &ddc->bit;
+ bit->data = ddc;
bit->setsda = mga_gpio_setsda;
bit->setscl = mga_gpio_setscl;
bit->getsda = mga_gpio_getsda;
@@ -126,18 +136,18 @@ struct i2c_adapter *mgag200_ddc_create(struct mga_device *mdev)
bit->udelay = 10;
bit->timeout = usecs_to_jiffies(2200);
- adapter = &i2c->adapter;
+ adapter = &ddc->adapter;
adapter->owner = THIS_MODULE;
adapter->algo_data = bit;
adapter->dev.parent = dev->dev;
- snprintf(adapter->name, sizeof(adapter->name), "mga i2c");
- i2c_set_adapdata(adapter, i2c);
+ snprintf(adapter->name, sizeof(adapter->name), "Matrox DDC bus");
+ i2c_set_adapdata(adapter, ddc);
ret = i2c_bit_add_bus(adapter);
if (ret)
return ERR_PTR(ret);
- ret = drmm_add_action_or_reset(dev, mgag200_i2c_release, i2c);
+ ret = drmm_add_action_or_reset(dev, mgag200_ddc_release, ddc);
if (ret)
return ERR_PTR(ret);
--
2.44.0
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 07/11] drm/mgag200: Rename mgag200_i2c.c to mgag200_ddc.c
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
` (5 preceding siblings ...)
2024-04-03 9:24 ` [PATCH 06/11] drm/mgag200: Replace struct mga_i2c_chan with struct mgag200_ddc Thomas Zimmermann
@ 2024-04-03 9:24 ` Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 08/11] drm/mgag200: Rename struct i2c_algo_bit_data callbacks Thomas Zimmermann
` (4 subsequent siblings)
11 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-03 9:24 UTC (permalink / raw
To: airlied, jfalempe, maarten.lankhorst, mripard, airlied, daniel,
jani.nikula
Cc: dri-devel, Thomas Zimmermann
Rename the source file according to its content. No functional
changes.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/mgag200/Makefile | 2 +-
drivers/gpu/drm/mgag200/{mgag200_i2c.c => mgag200_ddc.c} | 0
2 files changed, 1 insertion(+), 1 deletion(-)
rename drivers/gpu/drm/mgag200/{mgag200_i2c.c => mgag200_ddc.c} (100%)
diff --git a/drivers/gpu/drm/mgag200/Makefile b/drivers/gpu/drm/mgag200/Makefile
index 182e224c460dd..0b919352046eb 100644
--- a/drivers/gpu/drm/mgag200/Makefile
+++ b/drivers/gpu/drm/mgag200/Makefile
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
mgag200-y := \
mgag200_bmc.o \
+ mgag200_ddc.o \
mgag200_drv.o \
mgag200_g200.o \
mgag200_g200eh.o \
@@ -10,7 +11,6 @@ mgag200-y := \
mgag200_g200ew3.o \
mgag200_g200se.o \
mgag200_g200wb.o \
- mgag200_i2c.o \
mgag200_mode.o
obj-$(CONFIG_DRM_MGAG200) += mgag200.o
diff --git a/drivers/gpu/drm/mgag200/mgag200_i2c.c b/drivers/gpu/drm/mgag200/mgag200_ddc.c
similarity index 100%
rename from drivers/gpu/drm/mgag200/mgag200_i2c.c
rename to drivers/gpu/drm/mgag200/mgag200_ddc.c
--
2.44.0
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 08/11] drm/mgag200: Rename struct i2c_algo_bit_data callbacks
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
` (6 preceding siblings ...)
2024-04-03 9:24 ` [PATCH 07/11] drm/mgag200: Rename mgag200_i2c.c to mgag200_ddc.c Thomas Zimmermann
@ 2024-04-03 9:24 ` Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 09/11] drm/mgag200: Acquire I/O-register lock in DDC code Thomas Zimmermann
` (3 subsequent siblings)
11 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-03 9:24 UTC (permalink / raw
To: airlied, jfalempe, maarten.lankhorst, mripard, airlied, daniel,
jani.nikula
Cc: dri-devel, Thomas Zimmermann
Align the names of the algo-bit helpers with mgag200's convention of
using an mgag200 prefix plus the struct's name plus the callback's name
for such function symbols.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/mgag200/mgag200_ddc.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_ddc.c b/drivers/gpu/drm/mgag200/mgag200_ddc.c
index 73ff94c91ca36..3fa11b190943e 100644
--- a/drivers/gpu/drm/mgag200/mgag200_ddc.c
+++ b/drivers/gpu/drm/mgag200/mgag200_ddc.c
@@ -71,28 +71,28 @@ static inline void mga_i2c_set(struct mga_device *mdev, int mask, int state)
mga_i2c_set_gpio(mdev, ~mask, state);
}
-static void mga_gpio_setsda(void *data, int state)
+static void mgag200_ddc_algo_bit_data_setsda(void *data, int state)
{
struct mgag200_ddc *ddc = data;
mga_i2c_set(ddc->mdev, ddc->data, state);
}
-static void mga_gpio_setscl(void *data, int state)
+static void mgag200_ddc_algo_bit_data_setscl(void *data, int state)
{
struct mgag200_ddc *ddc = data;
mga_i2c_set(ddc->mdev, ddc->clock, state);
}
-static int mga_gpio_getsda(void *data)
+static int mgag200_ddc_algo_bit_data_getsda(void *data)
{
struct mgag200_ddc *ddc = data;
return (mga_i2c_read_gpio(ddc->mdev) & ddc->data) ? 1 : 0;
}
-static int mga_gpio_getscl(void *data)
+static int mgag200_ddc_algo_bit_data_getscl(void *data)
{
struct mgag200_ddc *ddc = data;
@@ -129,10 +129,10 @@ struct i2c_adapter *mgag200_ddc_create(struct mga_device *mdev)
bit = &ddc->bit;
bit->data = ddc;
- bit->setsda = mga_gpio_setsda;
- bit->setscl = mga_gpio_setscl;
- bit->getsda = mga_gpio_getsda;
- bit->getscl = mga_gpio_getscl;
+ bit->setsda = mgag200_ddc_algo_bit_data_setsda;
+ bit->setscl = mgag200_ddc_algo_bit_data_setscl;
+ bit->getsda = mgag200_ddc_algo_bit_data_getsda;
+ bit->getscl = mgag200_ddc_algo_bit_data_getscl;
bit->udelay = 10;
bit->timeout = usecs_to_jiffies(2200);
--
2.44.0
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 09/11] drm/mgag200: Acquire I/O-register lock in DDC code
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
` (7 preceding siblings ...)
2024-04-03 9:24 ` [PATCH 08/11] drm/mgag200: Rename struct i2c_algo_bit_data callbacks Thomas Zimmermann
@ 2024-04-03 9:24 ` Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 10/11] drm/mgag200: Use drm_connector_helper_get_modes() Thomas Zimmermann
` (2 subsequent siblings)
11 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-03 9:24 UTC (permalink / raw
To: airlied, jfalempe, maarten.lankhorst, mripard, airlied, daniel,
jani.nikula
Cc: dri-devel, Thomas Zimmermann
The modeset lock protects the DDC code from concurrent modeset
operations, which use the same registers. Move that code from the
connector helpers into the DDC helpers .pre_xfer() and .post_xfer().
Both, .pre_xfer() and .post_xfer(), enclose the transfer of data blocks
over the I2C channel in the internal I2C function bit_xfer(). Both
calls are executed unconditionally if present. Invoking DDC transfers
from any where within the driver now takes the lock.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/mgag200/mgag200_ddc.c | 24 ++++++++++++++++++++++++
drivers/gpu/drm/mgag200/mgag200_mode.c | 9 ---------
2 files changed, 24 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_ddc.c b/drivers/gpu/drm/mgag200/mgag200_ddc.c
index 3fa11b190943e..6d81ea8931e88 100644
--- a/drivers/gpu/drm/mgag200/mgag200_ddc.c
+++ b/drivers/gpu/drm/mgag200/mgag200_ddc.c
@@ -99,6 +99,28 @@ static int mgag200_ddc_algo_bit_data_getscl(void *data)
return (mga_i2c_read_gpio(ddc->mdev) & ddc->clock) ? 1 : 0;
}
+static int mgag200_ddc_algo_bit_data_pre_xfer(struct i2c_adapter *adapter)
+{
+ struct mgag200_ddc *ddc = i2c_get_adapdata(adapter);
+ struct mga_device *mdev = ddc->mdev;
+
+ /*
+ * Protect access to I/O registers from concurrent modesetting
+ * by acquiring the I/O-register lock.
+ */
+ mutex_lock(&mdev->rmmio_lock);
+
+ return 0;
+}
+
+static void mgag200_ddc_algo_bit_data_post_xfer(struct i2c_adapter *adapter)
+{
+ struct mgag200_ddc *ddc = i2c_get_adapdata(adapter);
+ struct mga_device *mdev = ddc->mdev;
+
+ mutex_unlock(&mdev->rmmio_lock);
+}
+
static void mgag200_ddc_release(struct drm_device *dev, void *res)
{
struct mgag200_ddc *ddc = res;
@@ -133,6 +155,8 @@ struct i2c_adapter *mgag200_ddc_create(struct mga_device *mdev)
bit->setscl = mgag200_ddc_algo_bit_data_setscl;
bit->getsda = mgag200_ddc_algo_bit_data_getsda;
bit->getscl = mgag200_ddc_algo_bit_data_getscl;
+ bit->pre_xfer = mgag200_ddc_algo_bit_data_pre_xfer;
+ bit->post_xfer = mgag200_ddc_algo_bit_data_post_xfer;
bit->udelay = 10;
bit->timeout = usecs_to_jiffies(2200);
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index 4ca2f4cba1077..f6bec6d9a3b3f 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -725,23 +725,14 @@ void mgag200_crtc_atomic_destroy_state(struct drm_crtc *crtc, struct drm_crtc_st
int mgag200_vga_connector_helper_get_modes(struct drm_connector *connector)
{
- struct mga_device *mdev = to_mga_device(connector->dev);
const struct drm_edid *drm_edid;
int count;
- /*
- * Protect access to I/O registers from concurrent modesetting
- * by acquiring the I/O-register lock.
- */
- mutex_lock(&mdev->rmmio_lock);
-
drm_edid = drm_edid_read(connector);
drm_edid_connector_update(connector, drm_edid);
count = drm_edid_connector_add_modes(connector);
drm_edid_free(drm_edid);
- mutex_unlock(&mdev->rmmio_lock);
-
return count;
}
--
2.44.0
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 10/11] drm/mgag200: Use drm_connector_helper_get_modes()
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
` (8 preceding siblings ...)
2024-04-03 9:24 ` [PATCH 09/11] drm/mgag200: Acquire I/O-register lock in DDC code Thomas Zimmermann
@ 2024-04-03 9:24 ` Thomas Zimmermann
2024-04-03 9:24 ` [PATCH 11/11] drm/mgag200: Set .detect_ctx() and enable connector polling Thomas Zimmermann
2024-04-08 10:36 ` [PATCH 00/11] drm/mgag200: Detect connector status Jocelyn Falempe
11 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-03 9:24 UTC (permalink / raw
To: airlied, jfalempe, maarten.lankhorst, mripard, airlied, daniel,
jani.nikula
Cc: dri-devel, Thomas Zimmermann
Mgag200's .get_modes() function is identical to the common helper.
Use the latter.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/mgag200/mgag200_drv.h | 4 +---
drivers/gpu/drm/mgag200/mgag200_mode.c | 17 -----------------
2 files changed, 1 insertion(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h
index 7bd8790d4eb03..49237a260ab05 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@@ -415,10 +415,8 @@ void mgag200_crtc_atomic_destroy_state(struct drm_crtc *crtc, struct drm_crtc_st
#define MGAG200_DAC_ENCODER_FUNCS \
.destroy = drm_encoder_cleanup
-int mgag200_vga_connector_helper_get_modes(struct drm_connector *connector);
-
#define MGAG200_VGA_CONNECTOR_HELPER_FUNCS \
- .get_modes = mgag200_vga_connector_helper_get_modes
+ .get_modes = drm_connector_helper_get_modes
#define MGAG200_VGA_CONNECTOR_FUNCS \
.reset = drm_atomic_helper_connector_reset, \
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index f6bec6d9a3b3f..948fa81ee41e3 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -719,23 +719,6 @@ void mgag200_crtc_atomic_destroy_state(struct drm_crtc *crtc, struct drm_crtc_st
kfree(mgag200_crtc_state);
}
-/*
- * Connector
- */
-
-int mgag200_vga_connector_helper_get_modes(struct drm_connector *connector)
-{
- const struct drm_edid *drm_edid;
- int count;
-
- drm_edid = drm_edid_read(connector);
- drm_edid_connector_update(connector, drm_edid);
- count = drm_edid_connector_add_modes(connector);
- drm_edid_free(drm_edid);
-
- return count;
-}
-
/*
* Mode config
*/
--
2.44.0
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 11/11] drm/mgag200: Set .detect_ctx() and enable connector polling
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
` (9 preceding siblings ...)
2024-04-03 9:24 ` [PATCH 10/11] drm/mgag200: Use drm_connector_helper_get_modes() Thomas Zimmermann
@ 2024-04-03 9:24 ` Thomas Zimmermann
2024-04-08 10:36 ` [PATCH 00/11] drm/mgag200: Detect connector status Jocelyn Falempe
11 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-03 9:24 UTC (permalink / raw
To: airlied, jfalempe, maarten.lankhorst, mripard, airlied, daniel,
jani.nikula
Cc: dri-devel, Thomas Zimmermann
Set .detect_ctx() in struct drm_connector_helper_funcs to the
common helper drm_connector_helper_detect_from_ddc() and enable
polling for the connector. Mgag200 will now test for the monitor's
presence by probing the DDC in regular intervals.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/mgag200/mgag200_drv.h | 3 ++-
drivers/gpu/drm/mgag200/mgag200_g200.c | 4 ++++
drivers/gpu/drm/mgag200/mgag200_g200eh.c | 4 ++++
drivers/gpu/drm/mgag200/mgag200_g200eh3.c | 4 ++++
drivers/gpu/drm/mgag200/mgag200_g200er.c | 4 ++++
drivers/gpu/drm/mgag200/mgag200_g200ev.c | 4 ++++
drivers/gpu/drm/mgag200/mgag200_g200ew3.c | 4 ++++
drivers/gpu/drm/mgag200/mgag200_g200se.c | 4 ++++
drivers/gpu/drm/mgag200/mgag200_g200wb.c | 4 ++++
9 files changed, 34 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h
index 49237a260ab05..2a3bc9db60870 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@@ -416,7 +416,8 @@ void mgag200_crtc_atomic_destroy_state(struct drm_crtc *crtc, struct drm_crtc_st
.destroy = drm_encoder_cleanup
#define MGAG200_VGA_CONNECTOR_HELPER_FUNCS \
- .get_modes = drm_connector_helper_get_modes
+ .get_modes = drm_connector_helper_get_modes, \
+ .detect_ctx = drm_connector_helper_detect_from_ddc
#define MGAG200_VGA_CONNECTOR_FUNCS \
.reset = drm_atomic_helper_connector_reset, \
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200.c b/drivers/gpu/drm/mgag200/mgag200_g200.c
index 39a29d8ffca6e..0fe102db5a1a6 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200.c
@@ -255,6 +255,9 @@ static int mgag200_g200_pipeline_init(struct mga_device *mdev)
}
drm_connector_helper_add(connector, &mgag200_g200_vga_connector_helper_funcs);
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+ DRM_CONNECTOR_POLL_DISCONNECT;
+
ret = drm_connector_attach_encoder(connector, encoder);
if (ret) {
drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", ret);
@@ -443,6 +446,7 @@ struct mga_device *mgag200_g200_device_create(struct pci_dev *pdev, const struct
return ERR_PTR(ret);
drm_mode_config_reset(dev);
+ drm_kms_helper_poll_init(dev);
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200eh.c b/drivers/gpu/drm/mgag200/mgag200_g200eh.c
index 619fee7ffdf5e..5a493bbf4a9ae 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200eh.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200eh.c
@@ -254,6 +254,9 @@ static int mgag200_g200eh_pipeline_init(struct mga_device *mdev)
}
drm_connector_helper_add(connector, &mgag200_g200eh_vga_connector_helper_funcs);
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+ DRM_CONNECTOR_POLL_DISCONNECT;
+
ret = drm_connector_attach_encoder(connector, encoder);
if (ret) {
drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", ret);
@@ -315,6 +318,7 @@ struct mga_device *mgag200_g200eh_device_create(struct pci_dev *pdev, const stru
return ERR_PTR(ret);
drm_mode_config_reset(dev);
+ drm_kms_helper_poll_init(dev);
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200eh3.c b/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
index a172b8a4500a0..a439dfc521489 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
@@ -158,6 +158,9 @@ static int mgag200_g200eh3_pipeline_init(struct mga_device *mdev)
}
drm_connector_helper_add(connector, &mgag200_g200eh3_vga_connector_helper_funcs);
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+ DRM_CONNECTOR_POLL_DISCONNECT;
+
ret = drm_connector_attach_encoder(connector, encoder);
if (ret) {
drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", ret);
@@ -220,6 +223,7 @@ struct mga_device *mgag200_g200eh3_device_create(struct pci_dev *pdev,
return ERR_PTR(ret);
drm_mode_config_reset(dev);
+ drm_kms_helper_poll_init(dev);
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200er.c b/drivers/gpu/drm/mgag200/mgag200_g200er.c
index a11c91331e43e..b3e6c2a7281cd 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200er.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200er.c
@@ -297,6 +297,9 @@ static int mgag200_g200er_pipeline_init(struct mga_device *mdev)
}
drm_connector_helper_add(connector, &mgag200_g200er_vga_connector_helper_funcs);
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+ DRM_CONNECTOR_POLL_DISCONNECT;
+
ret = drm_connector_attach_encoder(connector, encoder);
if (ret) {
drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", ret);
@@ -354,6 +357,7 @@ struct mga_device *mgag200_g200er_device_create(struct pci_dev *pdev, const stru
return ERR_PTR(ret);
drm_mode_config_reset(dev);
+ drm_kms_helper_poll_init(dev);
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200ev.c b/drivers/gpu/drm/mgag200/mgag200_g200ev.c
index dfb641b83842a..eefef4ec4abdb 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200ev.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200ev.c
@@ -298,6 +298,9 @@ static int mgag200_g200ev_pipeline_init(struct mga_device *mdev)
}
drm_connector_helper_add(connector, &mgag200_g200ev_vga_connector_helper_funcs);
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+ DRM_CONNECTOR_POLL_DISCONNECT;
+
ret = drm_connector_attach_encoder(connector, encoder);
if (ret) {
drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", ret);
@@ -359,6 +362,7 @@ struct mga_device *mgag200_g200ev_device_create(struct pci_dev *pdev, const stru
return ERR_PTR(ret);
drm_mode_config_reset(dev);
+ drm_kms_helper_poll_init(dev);
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200ew3.c b/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
index 525b7f75e6228..51f8cec5c70c0 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
@@ -167,6 +167,9 @@ static int mgag200_g200ew3_pipeline_init(struct mga_device *mdev)
}
drm_connector_helper_add(connector, &mgag200_g200ew3_vga_connector_helper_funcs);
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+ DRM_CONNECTOR_POLL_DISCONNECT;
+
ret = drm_connector_attach_encoder(connector, encoder);
if (ret) {
drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", ret);
@@ -240,6 +243,7 @@ struct mga_device *mgag200_g200ew3_device_create(struct pci_dev *pdev,
return ERR_PTR(ret);
drm_mode_config_reset(dev);
+ drm_kms_helper_poll_init(dev);
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200se.c b/drivers/gpu/drm/mgag200/mgag200_g200se.c
index ef7606b529ea1..49f433eddf3cc 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200se.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200se.c
@@ -429,6 +429,9 @@ static int mgag200_g200se_pipeline_init(struct mga_device *mdev)
}
drm_connector_helper_add(connector, &mgag200_g200se_vga_connector_helper_funcs);
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+ DRM_CONNECTOR_POLL_DISCONNECT;
+
ret = drm_connector_attach_encoder(connector, encoder);
if (ret) {
drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", ret);
@@ -559,6 +562,7 @@ struct mga_device *mgag200_g200se_device_create(struct pci_dev *pdev, const stru
return ERR_PTR(ret);
drm_mode_config_reset(dev);
+ drm_kms_helper_poll_init(dev);
return mdev;
}
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200wb.c b/drivers/gpu/drm/mgag200/mgag200_g200wb.c
index e4def62b1e575..689c8959daaa2 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200wb.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200wb.c
@@ -301,6 +301,9 @@ static int mgag200_g200wb_pipeline_init(struct mga_device *mdev)
}
drm_connector_helper_add(connector, &mgag200_g200wb_vga_connector_helper_funcs);
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+ DRM_CONNECTOR_POLL_DISCONNECT;
+
ret = drm_connector_attach_encoder(connector, encoder);
if (ret) {
drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", ret);
@@ -364,6 +367,7 @@ struct mga_device *mgag200_g200wb_device_create(struct pci_dev *pdev, const stru
return ERR_PTR(ret);
drm_mode_config_reset(dev);
+ drm_kms_helper_poll_init(dev);
return mdev;
}
--
2.44.0
^ permalink raw reply related [flat|nested] 14+ messages in thread* Re: [PATCH 00/11] drm/mgag200: Detect connector status
2024-04-03 9:24 [PATCH 00/11] drm/mgag200: Detect connector status Thomas Zimmermann
` (10 preceding siblings ...)
2024-04-03 9:24 ` [PATCH 11/11] drm/mgag200: Set .detect_ctx() and enable connector polling Thomas Zimmermann
@ 2024-04-08 10:36 ` Jocelyn Falempe
2024-04-08 11:06 ` Thomas Zimmermann
11 siblings, 1 reply; 14+ messages in thread
From: Jocelyn Falempe @ 2024-04-08 10:36 UTC (permalink / raw
To: Thomas Zimmermann, airlied, maarten.lankhorst, mripard, airlied,
daniel, jani.nikula
Cc: dri-devel
Hi Thomas,
I've tested this series on my Dell T310, and it works well, when I
plug/unplug the VGA screen, it's reflected in /sys/class/drm/.../status
I've also tested it remotely on a Dell R640, which doesn't have a VGA
monitor connected.
After the patch, on the iDrac console, I only get a green screen saying:
"Out of Range
Reason: Video Capture Failure
Detected Resolution: 0x768
Detected Color Depth-1bpp"
and the file:
/sys/class/drm/card0-VGA-1/modes
is empty
Before the patch, the driver reports VGA as connected, and modes
contains 1024x768 and others.
I think we may need to add a virtual connector for BMC, like I've done
for AST ?
So that when no VGA monitor is available, you can still choose an
appropriate resolution.
Best regards,
--
Jocelyn
On 03/04/2024 11:24, Thomas Zimmermann wrote:
> Detect the connector status by polling the DDC. Update the status at
> runtime. Clean up a the driver's DDC code in the process.
>
> Patches 1 and 2 fix long-standing problems in the DDC code.
>
> Patches 3 to 9 refactor the DDC code. The code then keeps its data
> structures internal, acquires locks automatically and it much more
> readable overall.
>
> With patches 10 and 11, mgag200 makes use of existing helpers for
> reading and probing the DDC. It then correctly updates the status
> and EDID at runtime.
>
> Tested on various Matrox hardware.
>
> Thomas Zimmermann (11):
> drm/mgag200: Set DDC timeout in milliseconds
> drm/mgag200: Bind I2C lifetime to DRM device
> drm/mgag200: Store pointer to struct mga_device in struct mga_i2c_chan
> drm/mgag200: Allocate instance of struct mga_i2c_chan dynamically
> drm/mgag200: Inline mgag200_i2c_init()
> drm/mgag200: Replace struct mga_i2c_chan with struct mgag200_ddc
> drm/mgag200: Rename mgag200_i2c.c to mgag200_ddc.c
> drm/mgag200: Rename struct i2c_algo_bit_data callbacks
> drm/mgag200: Acquire I/O-register lock in DDC code
> drm/mgag200: Use drm_connector_helper_get_modes()
> drm/mgag200: Set .detect_ctx() and enable connector polling
>
> drivers/gpu/drm/mgag200/Makefile | 2 +-
> drivers/gpu/drm/mgag200/mgag200_ddc.c | 179 ++++++++++++++++++++++
> drivers/gpu/drm/mgag200/mgag200_ddc.h | 11 ++
> drivers/gpu/drm/mgag200/mgag200_drv.h | 19 +--
> drivers/gpu/drm/mgag200/mgag200_g200.c | 15 +-
> drivers/gpu/drm/mgag200/mgag200_g200eh.c | 15 +-
> drivers/gpu/drm/mgag200/mgag200_g200eh3.c | 15 +-
> drivers/gpu/drm/mgag200/mgag200_g200er.c | 15 +-
> drivers/gpu/drm/mgag200/mgag200_g200ev.c | 15 +-
> drivers/gpu/drm/mgag200/mgag200_g200ew3.c | 15 +-
> drivers/gpu/drm/mgag200/mgag200_g200se.c | 15 +-
> drivers/gpu/drm/mgag200/mgag200_g200wb.c | 15 +-
> drivers/gpu/drm/mgag200/mgag200_i2c.c | 129 ----------------
> drivers/gpu/drm/mgag200/mgag200_mode.c | 27 +---
> 14 files changed, 274 insertions(+), 213 deletions(-)
> create mode 100644 drivers/gpu/drm/mgag200/mgag200_ddc.c
> create mode 100644 drivers/gpu/drm/mgag200/mgag200_ddc.h
> delete mode 100644 drivers/gpu/drm/mgag200/mgag200_i2c.c
>
^ permalink raw reply [flat|nested] 14+ messages in thread* Re: [PATCH 00/11] drm/mgag200: Detect connector status
2024-04-08 10:36 ` [PATCH 00/11] drm/mgag200: Detect connector status Jocelyn Falempe
@ 2024-04-08 11:06 ` Thomas Zimmermann
0 siblings, 0 replies; 14+ messages in thread
From: Thomas Zimmermann @ 2024-04-08 11:06 UTC (permalink / raw
To: Jocelyn Falempe, airlied, maarten.lankhorst, mripard, airlied,
daniel, jani.nikula
Cc: dri-devel
Hi
Am 08.04.24 um 12:36 schrieb Jocelyn Falempe:
> Hi Thomas,
>
> I've tested this series on my Dell T310, and it works well, when I
> plug/unplug the VGA screen, it's reflected in /sys/class/drm/.../status
>
> I've also tested it remotely on a Dell R640, which doesn't have a VGA
> monitor connected.
>
> After the patch, on the iDrac console, I only get a green screen saying:
>
> "Out of Range
> Reason: Video Capture Failure
> Detected Resolution: 0x768
> Detected Color Depth-1bpp"
>
> and the file:
> /sys/class/drm/card0-VGA-1/modes
> is empty
>
> Before the patch, the driver reports VGA as connected, and modes
> contains 1024x768 and others.
>
> I think we may need to add a virtual connector for BMC, like I've done
> for AST ?
> So that when no VGA monitor is available, you can still choose an
> appropriate resolution.
Argh, I feared that would be the case. I'll submit another update that
will contain the BMC support.
Best regards
Thomas
>
> Best regards,
>
--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)
^ permalink raw reply [flat|nested] 14+ messages in thread