Message ID | 20220715092253.17529-1-matthieu.charette@gmail.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | drm: Fix EDID firmware load on resume | expand |
Hi Matthieu, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on v5.19-rc6] [also build test WARNING on linus/master] [cannot apply to drm-misc/drm-misc-next next-20220715] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Matthieu-CHARETTE/drm-Fix-EDID-firmware-load-on-resume/20220716-214028 base: 32346491ddf24599decca06190ebca03ff9de7f8 config: i386-randconfig-a003 (https://download.01.org/0day-ci/archive/20220717/202207170211.AaMpUwPs-lkp@intel.com/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/e583aaf4f6464add35f2350c728d80a3fe790638 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Matthieu-CHARETTE/drm-Fix-EDID-firmware-load-on-resume/20220716-214028 git checkout e583aaf4f6464add35f2350c728d80a3fe790638 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com> All warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/drm_connector.c:25: >> include/drm/drm_edid.h:387:1: warning: 'drm_cache_edid_firmware' used but never defined 387 | drm_cache_edid_firmware(struct drm_connector *connector); | ^~~~~~~~~~~~~~~~~~~~~~~ vim +/drm_cache_edid_firmware +387 include/drm/drm_edid.h 374 375 int drm_edid_to_sad(const struct edid *edid, struct cea_sad **sads); 376 int drm_edid_to_speaker_allocation(const struct edid *edid, u8 **sadb); 377 int drm_av_sync_delay(struct drm_connector *connector, 378 const struct drm_display_mode *mode); 379 380 #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE 381 void drm_cache_edid_firmware(struct drm_connector *connector); 382 struct edid *drm_load_edid_firmware(struct drm_connector *connector); 383 int __drm_set_edid_firmware_path(const char *path); 384 int __drm_get_edid_firmware_path(char *buf, size_t bufsize); 385 #else 386 static inline void > 387 drm_cache_edid_firmware(struct drm_connector *connector); 388 static inline struct edid * 389 drm_load_edid_firmware(struct drm_connector *connector) 390 { 391 return ERR_PTR(-ENOENT); 392 } 393 #endif 394
Hi Matthieu,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on v5.19-rc6]
[also build test ERROR on linus/master]
[cannot apply to drm-misc/drm-misc-next next-20220715]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Matthieu-CHARETTE/drm-Fix-EDID-firmware-load-on-resume/20220716-214028
base: 32346491ddf24599decca06190ebca03ff9de7f8
config: x86_64-randconfig-a015 (https://download.01.org/0day-ci/archive/20220717/202207170521.UXrz8URh-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/intel-lab-lkp/linux/commit/e583aaf4f6464add35f2350c728d80a3fe790638
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Matthieu-CHARETTE/drm-Fix-EDID-firmware-load-on-resume/20220716-214028
git checkout e583aaf4f6464add35f2350c728d80a3fe790638
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
ld: certs/system_keyring.o: in function `load_system_certificate_list':
system_keyring.c:(.init.text+0x149): undefined reference to `x509_load_certificate_list'
ld: drivers/gpu/drm/drm_connector.o: in function `drm_connector_init':
>> drm_connector.c:(.text+0x21ce): undefined reference to `drm_cache_edid_firmware'
Hi Matthieu,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on v5.19-rc6]
[also build test ERROR on linus/master]
[cannot apply to drm-misc/drm-misc-next next-20220715]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Matthieu-CHARETTE/drm-Fix-EDID-firmware-load-on-resume/20220716-214028
base: 32346491ddf24599decca06190ebca03ff9de7f8
config: parisc-randconfig-r023-20220717 (https://download.01.org/0day-ci/archive/20220717/202207170636.Yv3aXya1-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/e583aaf4f6464add35f2350c728d80a3fe790638
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Matthieu-CHARETTE/drm-Fix-EDID-firmware-load-on-resume/20220716-214028
git checkout e583aaf4f6464add35f2350c728d80a3fe790638
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
hppa-linux-ld: drivers/gpu/drm/drm_connector.o: in function `.LC507':
>> drm_connector.c:(.rodata.cst4+0x1f8): undefined reference to `drm_cache_edid_firmware'
Hi Matthieu, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on v5.19-rc6] [also build test WARNING on linus/master] [cannot apply to drm-misc/drm-misc-next next-20220715] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Matthieu-CHARETTE/drm-Fix-EDID-firmware-load-on-resume/20220716-214028 base: 32346491ddf24599decca06190ebca03ff9de7f8 config: loongarch-randconfig-s052-20220715 (https://download.01.org/0day-ci/archive/20220717/202207172035.mtErdlaw-lkp@intel.com/config) compiler: loongarch64-linux-gcc (GCC) 12.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://github.com/intel-lab-lkp/linux/commit/e583aaf4f6464add35f2350c728d80a3fe790638 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Matthieu-CHARETTE/drm-Fix-EDID-firmware-load-on-resume/20220716-214028 git checkout e583aaf4f6464add35f2350c728d80a3fe790638 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=loongarch SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com> sparse warnings: (new ones prefixed by >>) drivers/gpu/drm/drm_connector.c: note: in included file: >> include/drm/drm_edid.h:387:24: sparse: sparse: marked inline, but without a definition vim +387 include/drm/drm_edid.h 374 375 int drm_edid_to_sad(const struct edid *edid, struct cea_sad **sads); 376 int drm_edid_to_speaker_allocation(const struct edid *edid, u8 **sadb); 377 int drm_av_sync_delay(struct drm_connector *connector, 378 const struct drm_display_mode *mode); 379 380 #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE 381 void drm_cache_edid_firmware(struct drm_connector *connector); 382 struct edid *drm_load_edid_firmware(struct drm_connector *connector); 383 int __drm_set_edid_firmware_path(const char *path); 384 int __drm_get_edid_firmware_path(char *buf, size_t bufsize); 385 #else 386 static inline void > 387 drm_cache_edid_firmware(struct drm_connector *connector); 388 static inline struct edid * 389 drm_load_edid_firmware(struct drm_connector *connector) 390 { 391 return ERR_PTR(-ENOENT); 392 } 393 #endif 394
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 1c48d162c77e..e8819ebf1c4b 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -31,6 +31,7 @@ #include <drm/drm_privacy_screen_consumer.h> #include <drm/drm_sysfs.h> +#include <linux/platform_device.h> #include <linux/uaccess.h> #include "drm_crtc_internal.h" @@ -289,6 +290,9 @@ int drm_connector_init(struct drm_device *dev, drm_connector_get_cmdline_mode(connector); + connector->edid_load_pdev = NULL; + drm_cache_edid_firmware(connector); + /* We should add connectors at the end to avoid upsetting the connector * index too much. */ @@ -473,6 +477,11 @@ void drm_connector_cleanup(struct drm_connector *connector) connector->tile_group = NULL; } + if (connector->edid_load_pdev) { + platform_device_unregister(connector->edid_load_pdev); + connector->edid_load_pdev = NULL; + } + list_for_each_entry_safe(mode, t, &connector->probed_modes, head) drm_mode_remove(connector, mode); diff --git a/drivers/gpu/drm/drm_edid_load.c b/drivers/gpu/drm/drm_edid_load.c index 37d8ba3ddb46..5a82be9917ec 100644 --- a/drivers/gpu/drm/drm_edid_load.c +++ b/drivers/gpu/drm/drm_edid_load.c @@ -167,6 +167,19 @@ static int edid_size(const u8 *edid, int data_size) return (edid[0x7e] + 1) * EDID_LENGTH; } +static struct platform_device *edid_pdev(const char *connector_name) +{ + struct platform_device *pdev = platform_device_register_simple(connector_name, -1, NULL, 0); + + if (IS_ERR(pdev)) { + DRM_ERROR("Failed to register EDID firmware platform device " + "for connector \"%s\"\n", connector_name); + return ERR_CAST(pdev); + } + + return pdev; +} + static void *edid_load(struct drm_connector *connector, const char *name, const char *connector_name) { @@ -182,18 +195,17 @@ static void *edid_load(struct drm_connector *connector, const char *name, fwdata = generic_edid[builtin]; fwsize = sizeof(generic_edid[builtin]); } else { - struct platform_device *pdev; + struct platform_device *pdev = connector->edid_load_pdev; int err; - pdev = platform_device_register_simple(connector_name, -1, NULL, 0); - if (IS_ERR(pdev)) { - DRM_ERROR("Failed to register EDID firmware platform device " - "for connector \"%s\"\n", connector_name); - return ERR_CAST(pdev); + if (WARN_ON(!pdev)) { + pdev = edid_pdev(connector_name); + if (IS_ERR(pdev)) + return ERR_CAST(pdev); + connector->edid_load_pdev = pdev; } err = request_firmware(&fw, name, &pdev->dev); - platform_device_unregister(pdev); if (err) { DRM_ERROR("Requesting EDID firmware \"%s\" failed (err=%d)\n", name, err); @@ -263,11 +275,9 @@ static void *edid_load(struct drm_connector *connector, const char *name, return edid; } -struct edid *drm_load_edid_firmware(struct drm_connector *connector) +static char *edid_name(const char *connector_name) { - const char *connector_name = connector->name; char *edidname, *last, *colon, *fwstr, *edidstr, *fallback = NULL; - struct edid *edid; if (edid_firmware[0] == '\0') return ERR_PTR(-ENOENT); @@ -310,8 +320,57 @@ struct edid *drm_load_edid_firmware(struct drm_connector *connector) if (*last == '\n') *last = '\0'; - edid = edid_load(connector, edidname, connector_name); + edidname = kstrdup(edidname, GFP_KERNEL); + if (!edidname) { + kfree(fwstr); + return ERR_PTR(-ENOMEM); + } + kfree(fwstr); + return edidname; +} + +void drm_cache_edid_firmware(struct drm_connector *connector) +{ + const char *connector_name = connector->name; + const char *edidname = edid_name(connector_name); + struct platform_device *pdev; + int err; + + if (IS_ERR(edidname)) + return; + + if (match_string(generic_edid_name, GENERIC_EDIDS, edidname) >= 0) { + kfree(edidname); + return; + } + + pdev = edid_pdev(connector_name); + if (IS_ERR(pdev)) { + kfree(edidname); + return; + } + connector->edid_load_pdev = pdev; + + err = firmware_request_cache(&pdev->dev, edidname); + if (err) + DRM_ERROR("Requesting EDID firmware cache \"%s\" failed (err=%d)\n", + edidname, err); + + kfree(edidname); +} + +struct edid *drm_load_edid_firmware(struct drm_connector *connector) +{ + const char *connector_name = connector->name; + const char *edidname = edid_name(connector_name); + struct edid *edid; + + if (IS_ERR(edidname)) + return ERR_CAST(edidname); + + edid = edid_load(connector, edidname, connector_name); + kfree(edidname); return edid; } diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 3ac4bf87f257..47c84741517e 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1573,6 +1573,18 @@ struct drm_connector { */ struct i2c_adapter *ddc; + /** + * @edid_load_pdev: Platform device for loading EDID via firmware. + * + * The platform device is registered in drm_connector_init() in case a + * custom EDID firmware is used with `edid_firmware` parameter. Otherwise, + * it is set to NULL. + * + * Platform device is unregistered in drm_connector_cleanup() if it + * is not NULL. + */ + struct platform_device *edid_load_pdev; + /** * @null_edid_counter: track sinks that give us all zeros for the EDID. * Needed to workaround some HW bugs where we get all 0s diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index b2756753370b..b54cea3f1107 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -378,10 +378,13 @@ int drm_av_sync_delay(struct drm_connector *connector, const struct drm_display_mode *mode); #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE +void drm_cache_edid_firmware(struct drm_connector *connector); struct edid *drm_load_edid_firmware(struct drm_connector *connector); int __drm_set_edid_firmware_path(const char *path); int __drm_get_edid_firmware_path(char *buf, size_t bufsize); #else +static inline void +drm_cache_edid_firmware(struct drm_connector *connector); static inline struct edid * drm_load_edid_firmware(struct drm_connector *connector) {
Loading an EDID using drm.edid_firmware parameter makes resume to fail after firmware cache is being cleaned. This is because edid_load() use a temporary device to request the firmware. This cause the EDID firmware not to be cached from suspend. And, requesting the EDID firmware return an error during resume. So the request_firmware() call should use a permanent device for each connector. Also, we should cache the EDID even if no monitor is connected, in case it's plugged while suspended. Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2061 Signed-off-by: Matthieu CHARETTE <matthieu.charette@gmail.com> --- drivers/gpu/drm/drm_connector.c | 9 ++++ drivers/gpu/drm/drm_edid_load.c | 81 ++++++++++++++++++++++++++++----- include/drm/drm_connector.h | 12 +++++ include/drm/drm_edid.h | 3 ++ 4 files changed, 94 insertions(+), 11 deletions(-)