aboutsummaryrefslogtreecommitdiffstats
path: root/meta-xilinx-contrib/recipes-kernel/linux/linux-xlnx/v2017.3/0001-drm-xilinx-Add-encoder-for-Digilent-boards.patch
diff options
context:
space:
mode:
Diffstat (limited to 'meta-xilinx-contrib/recipes-kernel/linux/linux-xlnx/v2017.3/0001-drm-xilinx-Add-encoder-for-Digilent-boards.patch')
-rw-r--r--meta-xilinx-contrib/recipes-kernel/linux/linux-xlnx/v2017.3/0001-drm-xilinx-Add-encoder-for-Digilent-boards.patch302
1 files changed, 0 insertions, 302 deletions
diff --git a/meta-xilinx-contrib/recipes-kernel/linux/linux-xlnx/v2017.3/0001-drm-xilinx-Add-encoder-for-Digilent-boards.patch b/meta-xilinx-contrib/recipes-kernel/linux/linux-xlnx/v2017.3/0001-drm-xilinx-Add-encoder-for-Digilent-boards.patch
deleted file mode 100644
index b8ba70ea..00000000
--- a/meta-xilinx-contrib/recipes-kernel/linux/linux-xlnx/v2017.3/0001-drm-xilinx-Add-encoder-for-Digilent-boards.patch
+++ /dev/null
@@ -1,302 +0,0 @@
-From c1bf9e8c50baa237b514715dcb9c8fd367694c93 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 0000000000..242b24e482
---- /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 12b548c2a9..c3e2562e53 100644
---- a/drivers/gpu/drm/xilinx/Kconfig
-+++ b/drivers/gpu/drm/xilinx/Kconfig
-@@ -57,3 +57,9 @@ config DRM_XILINX_SDI
- depends on DRM_XILINX
- 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.
-diff --git a/drivers/gpu/drm/xilinx/Makefile b/drivers/gpu/drm/xilinx/Makefile
-index 19bc1541ca..c2717e40ea 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 0000000000..26a23986f9
---- /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_mode_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");
---
-2.14.2
-
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-20 01:01:01 +0000