diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4781-drm-amd-display-Add-front-end-for-dp-debugfs-files.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4781-drm-amd-display-Add-front-end-for-dp-debugfs-files.patch | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4781-drm-amd-display-Add-front-end-for-dp-debugfs-files.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4781-drm-amd-display-Add-front-end-for-dp-debugfs-files.patch new file mode 100644 index 00000000..1d6fa57a --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4781-drm-amd-display-Add-front-end-for-dp-debugfs-files.patch @@ -0,0 +1,284 @@ +From 2407761df9e633f358b6731d95c64e42a8f90f94 Mon Sep 17 00:00:00 2001 +From: David Francis <David.Francis@amd.com> +Date: Fri, 1 Jun 2018 09:49:06 -0400 +Subject: [PATCH 4781/5725] drm/amd/display: Add front end for dp debugfs files + +As part of hardware certification, read-write access to +the link rate, lane count, voltage swing, pre-emphasis, +and PHY test pattern of DP connectors is required. This commit +adds debugfs files that will correspond to these values. +The file operations are not yet implemented: currently +writing or reading them does nothing. + +Signed-off-by: David Francis <David.Francis@amd.com> +Reviewed-by: Harry Wentland <harry.wentland@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/amdgpu_dm/Makefile | 2 +- + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 ++ + .../drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 170 +++++++++++++++++++++ + .../drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.h | 34 +++++ + 4 files changed, 215 insertions(+), 1 deletion(-) + create mode 100644 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c + create mode 100644 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.h + +diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile b/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile +index 8af5ccc..c54685e 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile +@@ -11,7 +11,7 @@ AMDGPUDM += amdgpu_dm_services.o amdgpu_dm_helpers.o + endif + + ifneq ($(CONFIG_DEBUG_FS),) +-AMDGPUDM += amdgpu_dm_crc.o ++AMDGPUDM += amdgpu_dm_crc.o amdgpu_dm_debugfs.o + endif + + subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/dc +diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +index 985c3b9..f51c1f2 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +@@ -39,6 +39,9 @@ + #include "dm_helpers.h" + #include "dm_services_types.h" + #include "amdgpu_dm_mst_types.h" ++#if defined(CONFIG_DEBUG_FS) ++#include "amdgpu_dm_debugfs.h" ++#endif + + #include "ivsrcid/ivsrcid_vislands30.h" + +@@ -4000,6 +4003,13 @@ static int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm, + &aconnector->base, &aencoder->base); + + drm_connector_register(&aconnector->base); ++#if defined(CONFIG_DEBUG_FS) ++ res = connector_debugfs_init(aconnector); ++ if (res) { ++ DRM_ERROR("Failed to create debugfs for connector"); ++ goto out_free; ++ } ++#endif + + if (connector_type == DRM_MODE_CONNECTOR_DisplayPort + || connector_type == DRM_MODE_CONNECTOR_eDP) +diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +new file mode 100644 +index 0000000..cf5ea69 +--- /dev/null ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +@@ -0,0 +1,170 @@ ++/* ++ * Copyright 2018 Advanced Micro Devices, Inc. ++ * ++ * Permission is hereby granted, free of charge, to any person obtaining a ++ * copy of this software and associated documentation files (the "Software"), ++ * to deal in the Software without restriction, including without limitation ++ * the rights to use, copy, modify, merge, publish, distribute, sublicense, ++ * and/or sell copies of the Software, and to permit persons to whom the ++ * Software is furnished to do so, subject to the following conditions: ++ * ++ * The above copyright notice and this permission notice shall be included in ++ * all copies or substantial portions of the Software. ++ * ++ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR ++ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, ++ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ++ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR ++ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ++ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR ++ * OTHER DEALINGS IN THE SOFTWARE. ++ * ++ * Authors: AMD ++ * ++ */ ++ ++#include <linux/debugfs.h> ++ ++#include "dc.h" ++#include "dc_link.h" ++ ++#include "amdgpu.h" ++#include "amdgpu_dm.h" ++#include "amdgpu_dm_debugfs.h" ++ ++static ssize_t dp_link_rate_debugfs_read(struct file *f, char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ /* TODO: create method to read link rate */ ++ return 1; ++} ++ ++static ssize_t dp_link_rate_debugfs_write(struct file *f, const char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ /* TODO: create method to write link rate */ ++ return 1; ++} ++ ++static ssize_t dp_lane_count_debugfs_read(struct file *f, char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ /* TODO: create method to read lane count */ ++ return 1; ++} ++ ++static ssize_t dp_lane_count_debugfs_write(struct file *f, const char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ /* TODO: create method to write lane count */ ++ return 1; ++} ++ ++static ssize_t dp_voltage_swing_debugfs_read(struct file *f, char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ /* TODO: create method to read voltage swing */ ++ return 1; ++} ++ ++static ssize_t dp_voltage_swing_debugfs_write(struct file *f, const char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ /* TODO: create method to write voltage swing */ ++ return 1; ++} ++ ++static ssize_t dp_pre_emphasis_debugfs_read(struct file *f, char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ /* TODO: create method to read pre-emphasis */ ++ return 1; ++} ++ ++static ssize_t dp_pre_emphasis_debugfs_write(struct file *f, const char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ /* TODO: create method to write pre-emphasis */ ++ return 1; ++} ++ ++static ssize_t dp_phy_test_pattern_debugfs_read(struct file *f, char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ /* TODO: create method to read PHY test pattern */ ++ return 1; ++} ++ ++static ssize_t dp_phy_test_pattern_debugfs_write(struct file *f, const char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ /* TODO: create method to write PHY test pattern */ ++ return 1; ++} ++ ++static const struct file_operations dp_link_rate_fops = { ++ .owner = THIS_MODULE, ++ .read = dp_link_rate_debugfs_read, ++ .write = dp_link_rate_debugfs_write, ++ .llseek = default_llseek ++}; ++ ++static const struct file_operations dp_lane_count_fops = { ++ .owner = THIS_MODULE, ++ .read = dp_lane_count_debugfs_read, ++ .write = dp_lane_count_debugfs_write, ++ .llseek = default_llseek ++}; ++ ++static const struct file_operations dp_voltage_swing_fops = { ++ .owner = THIS_MODULE, ++ .read = dp_voltage_swing_debugfs_read, ++ .write = dp_voltage_swing_debugfs_write, ++ .llseek = default_llseek ++}; ++ ++static const struct file_operations dp_pre_emphasis_fops = { ++ .owner = THIS_MODULE, ++ .read = dp_pre_emphasis_debugfs_read, ++ .write = dp_pre_emphasis_debugfs_write, ++ .llseek = default_llseek ++}; ++ ++static const struct file_operations dp_phy_test_pattern_fops = { ++ .owner = THIS_MODULE, ++ .read = dp_phy_test_pattern_debugfs_read, ++ .write = dp_phy_test_pattern_debugfs_write, ++ .llseek = default_llseek ++}; ++ ++static const struct { ++ char *name; ++ const struct file_operations *fops; ++} dp_debugfs_entries[] = { ++ {"link_rate", &dp_link_rate_fops}, ++ {"lane_count", &dp_lane_count_fops}, ++ {"voltage_swing", &dp_voltage_swing_fops}, ++ {"pre_emphasis", &dp_pre_emphasis_fops}, ++ {"phy_test_pattern", &dp_phy_test_pattern_fops} ++}; ++ ++int connector_debugfs_init(struct amdgpu_dm_connector *connector) ++{ ++ int i; ++ struct dentry *ent, *dir = connector->base.debugfs_entry; ++ ++ if (connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) { ++ for (i = 0; i < ARRAY_SIZE(dp_debugfs_entries); i++) { ++ ent = debugfs_create_file(dp_debugfs_entries[i].name, ++ 0644, ++ dir, ++ connector, ++ dp_debugfs_entries[i].fops); ++ if (IS_ERR(ent)) ++ return PTR_ERR(ent); ++ } ++ } ++ ++ return 0; ++} ++ +diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.h +new file mode 100644 +index 0000000..d9ed1b2 +--- /dev/null ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.h +@@ -0,0 +1,34 @@ ++/* ++ * Copyright 2018 Advanced Micro Devices, Inc. ++ * ++ * Permission is hereby granted, free of charge, to any person obtaining a ++ * copy of this software and associated documentation files (the "Software"), ++ * to deal in the Software without restriction, including without limitation ++ * the rights to use, copy, modify, merge, publish, distribute, sublicense, ++ * and/or sell copies of the Software, and to permit persons to whom the ++ * Software is furnished to do so, subject to the following conditions: ++ * ++ * The above copyright notice and this permission notice shall be included in ++ * all copies or substantial portions of the Software. ++ * ++ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR ++ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, ++ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ++ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR ++ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ++ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR ++ * OTHER DEALINGS IN THE SOFTWARE. ++ * ++ * Authors: AMD ++ * ++ */ ++ ++#ifndef __AMDGPU_DM_DEBUGFS_H__ ++#define __AMDGPU_DM_DEBUGFS_H__ ++ ++#include "amdgpu.h" ++#include "amdgpu_dm.h" ++ ++int connector_debugfs_init(struct amdgpu_dm_connector *connector); ++ ++#endif +-- +2.7.4 + |