Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 196 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
new file mode 100644
index 000000000..69ea33cae
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -0,0 +1,196 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Samsung MIPI DSIM glue for Exynos SoCs.
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd
+ *
+ * Contacts: Tomasz Figa <t.figa@samsung.com>
+ */
+
+#include <linux/component.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+#include <drm/bridge/samsung-dsim.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+
+#include "exynos_drm_crtc.h"
+#include "exynos_drm_drv.h"
+
+struct exynos_dsi {
+	struct drm_encoder encoder;
+};
+
+static irqreturn_t exynos_dsi_te_irq_handler(struct samsung_dsim *dsim)
+{
+	struct exynos_dsi *dsi = dsim->priv;
+	struct drm_encoder *encoder = &dsi->encoder;
+
+	if (dsim->state & DSIM_STATE_VIDOUT_AVAILABLE)
+		exynos_drm_crtc_te_handler(encoder->crtc);
+
+	return IRQ_HANDLED;
+}
+
+static int exynos_dsi_host_attach(struct samsung_dsim *dsim,
+				  struct mipi_dsi_device *device)
+{
+	struct exynos_dsi *dsi = dsim->priv;
+	struct drm_encoder *encoder = &dsi->encoder;
+	struct drm_device *drm = encoder->dev;
+
+	drm_bridge_attach(encoder, &dsim->bridge,
+			  list_first_entry_or_null(&encoder->bridge_chain,
+						   struct drm_bridge,
+						   chain_node), 0);
+
+	mutex_lock(&drm->mode_config.mutex);
+
+	dsim->lanes = device->lanes;
+	dsim->format = device->format;
+	dsim->mode_flags = device->mode_flags;
+	exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD)->i80_mode =
+			!(dsim->mode_flags & MIPI_DSI_MODE_VIDEO);
+
+	mutex_unlock(&drm->mode_config.mutex);
+
+	if (drm->mode_config.poll_enabled)
+		drm_kms_helper_hotplug_event(drm);
+
+	return 0;
+}
+
+static void exynos_dsi_host_detach(struct samsung_dsim *dsim,
+				   struct mipi_dsi_device *device)
+{
+	struct exynos_dsi *dsi = dsim->priv;
+	struct drm_device *drm = dsi->encoder.dev;
+
+	if (drm->mode_config.poll_enabled)
+		drm_kms_helper_hotplug_event(drm);
+}
+
+static int exynos_dsi_bind(struct device *dev, struct device *master, void *data)
+{
+	struct samsung_dsim *dsim = dev_get_drvdata(dev);
+	struct exynos_dsi *dsi = dsim->priv;
+	struct drm_encoder *encoder = &dsi->encoder;
+	struct drm_device *drm_dev = data;
+	int ret;
+
+	drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);
+
+	ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);
+	if (ret < 0)
+		return ret;
+
+	return mipi_dsi_host_register(&dsim->dsi_host);
+}
+
+static void exynos_dsi_unbind(struct device *dev, struct device *master, void *data)
+{
+	struct samsung_dsim *dsim = dev_get_drvdata(dev);
+
+	dsim->bridge.funcs->atomic_disable(&dsim->bridge, NULL);
+
+	mipi_dsi_host_unregister(&dsim->dsi_host);
+}
+
+static const struct component_ops exynos_dsi_component_ops = {
+	.bind	= exynos_dsi_bind,
+	.unbind	= exynos_dsi_unbind,
+};
+
+static int exynos_dsi_register_host(struct samsung_dsim *dsim)
+{
+	struct exynos_dsi *dsi;
+
+	dsi = devm_kzalloc(dsim->dev, sizeof(*dsi), GFP_KERNEL);
+	if (!dsi)
+		return -ENOMEM;
+
+	dsim->priv = dsi;
+	dsim->bridge.pre_enable_prev_first = true;
+
+	return component_add(dsim->dev, &exynos_dsi_component_ops);
+}
+
+static void exynos_dsi_unregister_host(struct samsung_dsim *dsim)
+{
+	component_del(dsim->dev, &exynos_dsi_component_ops);
+}
+
+static const struct samsung_dsim_host_ops exynos_dsi_exynos_host_ops = {
+	.register_host = exynos_dsi_register_host,
+	.unregister_host = exynos_dsi_unregister_host,
+	.attach = exynos_dsi_host_attach,
+	.detach = exynos_dsi_host_detach,
+	.te_irq_handler = exynos_dsi_te_irq_handler,
+};
+
+static const struct samsung_dsim_plat_data exynos3250_dsi_pdata = {
+	.hw_type = DSIM_TYPE_EXYNOS3250,
+	.host_ops = &exynos_dsi_exynos_host_ops,
+};
+
+static const struct samsung_dsim_plat_data exynos4210_dsi_pdata = {
+	.hw_type = DSIM_TYPE_EXYNOS4210,
+	.host_ops = &exynos_dsi_exynos_host_ops,
+};
+
+static const struct samsung_dsim_plat_data exynos5410_dsi_pdata = {
+	.hw_type = DSIM_TYPE_EXYNOS5410,
+	.host_ops = &exynos_dsi_exynos_host_ops,
+};
+
+static const struct samsung_dsim_plat_data exynos5422_dsi_pdata = {
+	.hw_type = DSIM_TYPE_EXYNOS5422,
+	.host_ops = &exynos_dsi_exynos_host_ops,
+};
+
+static const struct samsung_dsim_plat_data exynos5433_dsi_pdata = {
+	.hw_type = DSIM_TYPE_EXYNOS5433,
+	.host_ops = &exynos_dsi_exynos_host_ops,
+};
+
+static const struct of_device_id exynos_dsi_of_match[] = {
+	{
+		.compatible = "samsung,exynos3250-mipi-dsi",
+		.data = &exynos3250_dsi_pdata,
+	},
+	{
+		.compatible = "samsung,exynos4210-mipi-dsi",
+		.data = &exynos4210_dsi_pdata,
+	},
+	{
+		.compatible = "samsung,exynos5410-mipi-dsi",
+		.data = &exynos5410_dsi_pdata,
+	},
+	{
+		.compatible = "samsung,exynos5422-mipi-dsi",
+		.data = &exynos5422_dsi_pdata,
+	},
+	{
+		.compatible = "samsung,exynos5433-mipi-dsi",
+		.data = &exynos5433_dsi_pdata,
+	},
+	{ /* sentinel. */ }
+};
+MODULE_DEVICE_TABLE(of, exynos_dsi_of_match);
+
+struct platform_driver dsi_driver = {
+	.probe = samsung_dsim_probe,
+	.remove = samsung_dsim_remove,
+	.driver = {
+		   .name = "exynos-dsi",
+		   .owner = THIS_MODULE,
+		   .pm = &samsung_dsim_pm_ops,
+		   .of_match_table = exynos_dsi_of_match,
+	},
+};
+
+MODULE_AUTHOR("Tomasz Figa <t.figa@samsung.com>");
+MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>");
+MODULE_DESCRIPTION("Samsung SoC MIPI DSI Master");
+MODULE_LICENSE("GPL v2");