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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/arm/display/komeda/komeda_drv.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/arm/display/komeda/komeda_drv.c')
-rw-r--r--drivers/gpu/drm/arm/display/komeda/komeda_drv.c203
1 files changed, 203 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
new file mode 100644
index 000000000..9fce4239d
--- /dev/null
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
@@ -0,0 +1,203 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
+ * Author: James.Qian.Wang <james.qian.wang@arm.com>
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/component.h>
+#include <linux/pm_runtime.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_module.h>
+#include <drm/drm_of.h>
+#include "komeda_dev.h"
+#include "komeda_kms.h"
+
+struct komeda_drv {
+ struct komeda_dev *mdev;
+ struct komeda_kms_dev *kms;
+};
+
+struct komeda_dev *dev_to_mdev(struct device *dev)
+{
+ struct komeda_drv *mdrv = dev_get_drvdata(dev);
+
+ return mdrv ? mdrv->mdev : NULL;
+}
+
+static void komeda_unbind(struct device *dev)
+{
+ struct komeda_drv *mdrv = dev_get_drvdata(dev);
+
+ if (!mdrv)
+ return;
+
+ komeda_kms_detach(mdrv->kms);
+
+ if (pm_runtime_enabled(dev))
+ pm_runtime_disable(dev);
+ else
+ komeda_dev_suspend(mdrv->mdev);
+
+ komeda_dev_destroy(mdrv->mdev);
+
+ dev_set_drvdata(dev, NULL);
+ devm_kfree(dev, mdrv);
+}
+
+static int komeda_bind(struct device *dev)
+{
+ struct komeda_drv *mdrv;
+ int err;
+
+ mdrv = devm_kzalloc(dev, sizeof(*mdrv), GFP_KERNEL);
+ if (!mdrv)
+ return -ENOMEM;
+
+ mdrv->mdev = komeda_dev_create(dev);
+ if (IS_ERR(mdrv->mdev)) {
+ err = PTR_ERR(mdrv->mdev);
+ goto free_mdrv;
+ }
+
+ pm_runtime_enable(dev);
+ if (!pm_runtime_enabled(dev))
+ komeda_dev_resume(mdrv->mdev);
+
+ mdrv->kms = komeda_kms_attach(mdrv->mdev);
+ if (IS_ERR(mdrv->kms)) {
+ err = PTR_ERR(mdrv->kms);
+ goto destroy_mdev;
+ }
+
+ dev_set_drvdata(dev, mdrv);
+ drm_fbdev_generic_setup(&mdrv->kms->base, 32);
+
+ return 0;
+
+destroy_mdev:
+ if (pm_runtime_enabled(dev))
+ pm_runtime_disable(dev);
+ else
+ komeda_dev_suspend(mdrv->mdev);
+
+ komeda_dev_destroy(mdrv->mdev);
+
+free_mdrv:
+ devm_kfree(dev, mdrv);
+ return err;
+}
+
+static const struct component_master_ops komeda_master_ops = {
+ .bind = komeda_bind,
+ .unbind = komeda_unbind,
+};
+
+static void komeda_add_slave(struct device *master,
+ struct component_match **match,
+ struct device_node *np,
+ u32 port, u32 endpoint)
+{
+ struct device_node *remote;
+
+ remote = of_graph_get_remote_node(np, port, endpoint);
+ if (remote) {
+ drm_of_component_match_add(master, match, component_compare_of, remote);
+ of_node_put(remote);
+ }
+}
+
+static int komeda_platform_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct component_match *match = NULL;
+ struct device_node *child;
+
+ if (!dev->of_node)
+ return -ENODEV;
+
+ for_each_available_child_of_node(dev->of_node, child) {
+ if (of_node_cmp(child->name, "pipeline") != 0)
+ continue;
+
+ /* add connector */
+ komeda_add_slave(dev, &match, child, KOMEDA_OF_PORT_OUTPUT, 0);
+ komeda_add_slave(dev, &match, child, KOMEDA_OF_PORT_OUTPUT, 1);
+ }
+
+ return component_master_add_with_match(dev, &komeda_master_ops, match);
+}
+
+static int komeda_platform_remove(struct platform_device *pdev)
+{
+ component_master_del(&pdev->dev, &komeda_master_ops);
+ return 0;
+}
+
+static const struct of_device_id komeda_of_match[] = {
+ { .compatible = "arm,mali-d71", .data = d71_identify, },
+ { .compatible = "arm,mali-d32", .data = d71_identify, },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, komeda_of_match);
+
+static int __maybe_unused komeda_rt_pm_suspend(struct device *dev)
+{
+ struct komeda_drv *mdrv = dev_get_drvdata(dev);
+
+ return komeda_dev_suspend(mdrv->mdev);
+}
+
+static int __maybe_unused komeda_rt_pm_resume(struct device *dev)
+{
+ struct komeda_drv *mdrv = dev_get_drvdata(dev);
+
+ return komeda_dev_resume(mdrv->mdev);
+}
+
+static int __maybe_unused komeda_pm_suspend(struct device *dev)
+{
+ struct komeda_drv *mdrv = dev_get_drvdata(dev);
+ int res;
+
+ res = drm_mode_config_helper_suspend(&mdrv->kms->base);
+
+ if (!pm_runtime_status_suspended(dev))
+ komeda_dev_suspend(mdrv->mdev);
+
+ return res;
+}
+
+static int __maybe_unused komeda_pm_resume(struct device *dev)
+{
+ struct komeda_drv *mdrv = dev_get_drvdata(dev);
+
+ if (!pm_runtime_status_suspended(dev))
+ komeda_dev_resume(mdrv->mdev);
+
+ return drm_mode_config_helper_resume(&mdrv->kms->base);
+}
+
+static const struct dev_pm_ops komeda_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(komeda_pm_suspend, komeda_pm_resume)
+ SET_RUNTIME_PM_OPS(komeda_rt_pm_suspend, komeda_rt_pm_resume, NULL)
+};
+
+static struct platform_driver komeda_platform_driver = {
+ .probe = komeda_platform_probe,
+ .remove = komeda_platform_remove,
+ .driver = {
+ .name = "komeda",
+ .of_match_table = komeda_of_match,
+ .pm = &komeda_pm_ops,
+ },
+};
+
+drm_module_platform_driver(komeda_platform_driver);
+
+MODULE_AUTHOR("James.Qian.Wang <james.qian.wang@arm.com>");
+MODULE_DESCRIPTION("Komeda KMS driver");
+MODULE_LICENSE("GPL v2");