diff options
Diffstat (limited to 'meta-xilinx/meta-xilinx-contrib/recipes-kernel/linux/linux-xlnx/v2020.2/0001-drm-xilinx-Add-encoder-for-Digilent-boards.patch')
-rw-r--r-- | meta-xilinx/meta-xilinx-contrib/recipes-kernel/linux/linux-xlnx/v2020.2/0001-drm-xilinx-Add-encoder-for-Digilent-boards.patch | 305 |
1 files changed, 0 insertions, 305 deletions
diff --git a/meta-xilinx/meta-xilinx-contrib/recipes-kernel/linux/linux-xlnx/v2020.2/0001-drm-xilinx-Add-encoder-for-Digilent-boards.patch b/meta-xilinx/meta-xilinx-contrib/recipes-kernel/linux/linux-xlnx/v2020.2/0001-drm-xilinx-Add-encoder-for-Digilent-boards.patch deleted file mode 100644 index 660bc2182..000000000 --- a/meta-xilinx/meta-xilinx-contrib/recipes-kernel/linux/linux-xlnx/v2020.2/0001-drm-xilinx-Add-encoder-for-Digilent-boards.patch +++ /dev/null @@ -1,305 +0,0 @@ -From 21cc8144efdaa3cd8dbd7279f87b14fa3432fae4 Mon Sep 17 00:00:00 2001 -From: Jason Wu <jason.wu.misc@gmail.com> -Date: Sun, 10 Apr 2016 13:14:13 +1000 -Subject: [PATCH 1/3] drm: xilinx: Add encoder for Digilent boards - -Add the dglnt_encoder driver that enables DRM support for the VGA and -HDMI output ports found on many Digilent boards. - -Upstream-Status: Pending - -Signed-off-by: Sam Bobrowicz <sbobrowicz@digilentinc.com> -Signed-off-by: Jason Wu <jason.wu.misc@gmail.com> ---- - .../bindings/drm/xilinx/dglnt_encoder.txt | 23 +++ - drivers/gpu/drm/xilinx/Kconfig | 6 + - drivers/gpu/drm/xilinx/Makefile | 1 + - drivers/gpu/drm/xilinx/dglnt_encoder.c | 217 +++++++++++++++++++++ - 4 files changed, 247 insertions(+) - create mode 100644 Documentation/devicetree/bindings/drm/xilinx/dglnt_encoder.txt - create mode 100644 drivers/gpu/drm/xilinx/dglnt_encoder.c - -diff --git a/Documentation/devicetree/bindings/drm/xilinx/dglnt_encoder.txt b/Documentation/devicetree/bindings/drm/xilinx/dglnt_encoder.txt -new file mode 100644 -index 0000000..242b24e ---- /dev/null -+++ b/Documentation/devicetree/bindings/drm/xilinx/dglnt_encoder.txt -@@ -0,0 +1,23 @@ -+Device-Tree bindings for Digilent DRM Encoder Slave -+ -+This driver provides support for VGA and HDMI outputs on Digilent FPGA boards. -+The VGA or HDMI port must be connected to a Xilinx display pipeline via an -+axi2vid IP core. -+ -+Required properties: -+ - compatible: Should be "digilent,drm-encoder". -+ -+Optional properties: -+ - dglnt,edid-i2c: The I2C device connected to the DDC bus on the video -+ connector. This is used to obtain the supported resolutions -+ of an attached monitor. If not defined, then a default -+ set of resolutions is used and the display will initialize -+ to 720p. Note most VGA connectors on Digilent boards do -+ not have the DDC bus routed out. -+ -+Example: -+ -+ encoder_0: digilent_encoder { -+ compatible = "digilent,drm-encoder"; -+ dglnt,edid-i2c = <&i2c1>; -+ }; -diff --git a/drivers/gpu/drm/xilinx/Kconfig b/drivers/gpu/drm/xilinx/Kconfig -index 57e18a9..d9ecff2 100644 ---- a/drivers/gpu/drm/xilinx/Kconfig -+++ b/drivers/gpu/drm/xilinx/Kconfig -@@ -33,6 +33,12 @@ config DRM_XILINX_DP_SUB - help - DRM driver for Xilinx Display Port Subsystem. - -+config DRM_DIGILENT_ENCODER -+ tristate "Digilent VGA/HDMI DRM Encoder Driver" -+ depends on DRM_XILINX -+ help -+ DRM slave encoder for Video-out on Digilent boards. -+ - config DRM_XILINX_DP_SUB_DEBUG_FS - bool "Xilinx DRM DPSUB debugfs" - depends on DEBUG_FS && DRM_XILINX_DP_SUB -diff --git a/drivers/gpu/drm/xilinx/Makefile b/drivers/gpu/drm/xilinx/Makefile -index 19bc154..c2717e40 100644 ---- a/drivers/gpu/drm/xilinx/Makefile -+++ b/drivers/gpu/drm/xilinx/Makefile -@@ -7,6 +7,7 @@ xilinx_drm-y := xilinx_drm_crtc.o xilinx_drm_connector.o xilinx_drm_drv.o \ - xilinx_drm_plane.o - xilinx_drm-y += xilinx_cresample.o xilinx_osd.o xilinx_rgb2yuv.o xilinx_vtc.o - -+obj-$(CONFIG_DRM_DIGILENT_ENCODER) += dglnt_encoder.o - obj-$(CONFIG_DRM_XILINX) += xilinx_drm.o - obj-$(CONFIG_DRM_XILINX_DP) += xilinx_drm_dp.o - obj-$(CONFIG_DRM_XILINX_DP_SUB) += xilinx_drm_dp_sub.o -diff --git a/drivers/gpu/drm/xilinx/dglnt_encoder.c b/drivers/gpu/drm/xilinx/dglnt_encoder.c -new file mode 100644 -index 0000000..cb9fc7d ---- /dev/null -+++ b/drivers/gpu/drm/xilinx/dglnt_encoder.c -@@ -0,0 +1,217 @@ -+/* -+ * dglnt_encoder.c - DRM slave encoder for Video-out on Digilent boards -+ * -+ * Copyright (C) 2015 Digilent -+ * Author: Sam Bobrowicz <sbobrowicz@digilentinc.com> -+ * -+ * Based on udl_encoder.c and udl_connector.c, Copyright (C) 2012 Red Hat. -+ * Also based on xilinx_drm_dp.c, Copyright (C) 2014 Xilinx, Inc. -+ * -+ * This software is licensed under the terms of the GNU General Public -+ * License version 2, as published by the Free Software Foundation, and -+ * may be copied, distributed, and modified under those terms. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ */ -+ -+#include <drm/drmP.h> -+#include <drm/drm_edid.h> -+#include <drm/drm_encoder_slave.h> -+ -+#include <linux/device.h> -+#include <linux/module.h> -+#include <linux/err.h> -+#include <linux/i2c.h> -+#include <linux/of.h> -+#include <linux/of_platform.h> -+#include <linux/platform_device.h> -+ -+#define DGLNT_ENC_MAX_FREQ 150000 -+#define DGLNT_ENC_MAX_H 1920 -+#define DGLNT_ENC_MAX_V 1080 -+#define DGLNT_ENC_PREF_H 1280 -+#define DGLNT_ENC_PREF_V 720 -+ -+struct dglnt_encoder { -+ struct drm_encoder *encoder; -+ struct i2c_adapter *i2c_bus; -+ bool i2c_present; -+}; -+ -+static inline struct dglnt_encoder *to_dglnt_encoder( -+ struct drm_encoder *encoder) -+{ -+ return to_encoder_slave(encoder)->slave_priv; -+} -+ -+static bool dglnt_mode_fixup(struct drm_encoder *encoder, -+ const struct drm_display_mode *mode, -+ struct drm_display_mode *adjusted_mode) -+{ -+ return true; -+} -+ -+static void dglnt_encoder_mode_set(struct drm_encoder *encoder, -+ struct drm_display_mode *mode, -+ struct drm_display_mode *adjusted_mode) -+{ -+} -+ -+static void -+dglnt_encoder_dpms(struct drm_encoder *encoder, int mode) -+{ -+} -+ -+static void dglnt_encoder_save(struct drm_encoder *encoder) -+{ -+} -+ -+static void dglnt_encoder_restore(struct drm_encoder *encoder) -+{ -+} -+ -+static int dglnt_encoder_mode_valid(struct drm_encoder *encoder, -+ struct drm_display_mode *mode) -+{ -+ if (mode && -+ !(mode->flags & ((DRM_MODE_FLAG_INTERLACE | -+ DRM_MODE_FLAG_DBLCLK) | DRM_MODE_FLAG_3D_MASK)) && -+ (mode->clock <= DGLNT_ENC_MAX_FREQ) && -+ (mode->hdisplay <= DGLNT_ENC_MAX_H) && -+ (mode->vdisplay <= DGLNT_ENC_MAX_V)) -+ return MODE_OK; -+ return MODE_BAD; -+} -+ -+static int dglnt_encoder_get_modes(struct drm_encoder *encoder, -+ struct drm_connector *connector) -+{ -+ struct dglnt_encoder *dglnt = to_dglnt_encoder(encoder); -+ struct edid *edid; -+ int num_modes = 0; -+ -+ if (dglnt->i2c_present) { -+ edid = drm_get_edid(connector, dglnt->i2c_bus); -+ drm_connector_update_edid_property(connector, edid); -+ if (edid) { -+ num_modes = drm_add_edid_modes(connector, edid); -+ kfree(edid); -+ } -+ } else { -+ num_modes = drm_add_modes_noedid(connector, DGLNT_ENC_MAX_H, -+ DGLNT_ENC_MAX_V); -+ drm_set_preferred_mode(connector, DGLNT_ENC_PREF_H, -+ DGLNT_ENC_PREF_V); -+ } -+ return num_modes; -+} -+ -+static enum drm_connector_status dglnt_encoder_detect( -+ struct drm_encoder *encoder, -+ struct drm_connector *connector) -+{ -+ struct dglnt_encoder *dglnt = to_dglnt_encoder(encoder); -+ -+ if (dglnt->i2c_present) { -+ if (drm_probe_ddc(dglnt->i2c_bus)) -+ return connector_status_connected; -+ return connector_status_disconnected; -+ } else -+ return connector_status_unknown; -+} -+ -+static struct drm_encoder_slave_funcs dglnt_encoder_slave_funcs = { -+ .dpms = dglnt_encoder_dpms, -+ .save = dglnt_encoder_save, -+ .restore = dglnt_encoder_restore, -+ .mode_fixup = dglnt_mode_fixup, -+ .mode_valid = dglnt_encoder_mode_valid, -+ .mode_set = dglnt_encoder_mode_set, -+ .detect = dglnt_encoder_detect, -+ .get_modes = dglnt_encoder_get_modes, -+}; -+ -+static int dglnt_encoder_encoder_init(struct platform_device *pdev, -+ struct drm_device *dev, -+ struct drm_encoder_slave *encoder) -+{ -+ struct dglnt_encoder *dglnt = platform_get_drvdata(pdev); -+ struct device_node *sub_node; -+ -+ encoder->slave_priv = dglnt; -+ encoder->slave_funcs = &dglnt_encoder_slave_funcs; -+ -+ dglnt->encoder = &encoder->base; -+ -+ /* get i2c adapter for edid */ -+ dglnt->i2c_present = false; -+ sub_node = of_parse_phandle(pdev->dev.of_node, "dglnt,edid-i2c", 0); -+ if (sub_node) { -+ dglnt->i2c_bus = of_find_i2c_adapter_by_node(sub_node); -+ if (!dglnt->i2c_bus) -+ DRM_INFO("failed to get the edid i2c adapter, using default modes\n"); -+ else -+ dglnt->i2c_present = true; -+ of_node_put(sub_node); -+ } -+ -+ return 0; -+} -+ -+static int dglnt_encoder_probe(struct platform_device *pdev) -+{ -+ struct dglnt_encoder *dglnt; -+ -+ dglnt = devm_kzalloc(&pdev->dev, sizeof(*dglnt), GFP_KERNEL); -+ if (!dglnt) -+ return -ENOMEM; -+ -+ platform_set_drvdata(pdev, dglnt); -+ -+ return 0; -+} -+ -+static int dglnt_encoder_remove(struct platform_device *pdev) -+{ -+ return 0; -+} -+ -+static const struct of_device_id dglnt_encoder_of_match[] = { -+ { .compatible = "digilent,drm-encoder", }, -+ { /* end of table */ }, -+}; -+MODULE_DEVICE_TABLE(of, dglnt_encoder_of_match); -+ -+static struct drm_platform_encoder_driver dglnt_encoder_driver = { -+ .platform_driver = { -+ .probe = dglnt_encoder_probe, -+ .remove = dglnt_encoder_remove, -+ .driver = { -+ .owner = THIS_MODULE, -+ .name = "dglnt-drm-enc", -+ .of_match_table = dglnt_encoder_of_match, -+ }, -+ }, -+ -+ .encoder_init = dglnt_encoder_encoder_init, -+}; -+ -+static int __init dglnt_encoder_init(void) -+{ -+ return platform_driver_register(&dglnt_encoder_driver.platform_driver); -+} -+ -+static void __exit dglnt_encoder_exit(void) -+{ -+ platform_driver_unregister(&dglnt_encoder_driver.platform_driver); -+} -+ -+module_init(dglnt_encoder_init); -+module_exit(dglnt_encoder_exit); -+ -+MODULE_AUTHOR("Digilent, Inc."); -+MODULE_DESCRIPTION("DRM slave encoder for Video-out on Digilent boards"); -+MODULE_LICENSE("GPL v2"); --- -2.7.4 - |