From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/drivers/gpu/drm/tegra/output.c | 143 +++++++++++++++++++++++++++--------------------
1 files changed, 82 insertions(+), 61 deletions(-)
diff --git a/kernel/drivers/gpu/drm/tegra/output.c b/kernel/drivers/gpu/drm/tegra/output.c
index c662efc..47d26b5 100644
--- a/kernel/drivers/gpu/drm/tegra/output.c
+++ b/kernel/drivers/gpu/drm/tegra/output.c
@@ -1,14 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2012 Avionic Design GmbH
* Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <drm/drm_atomic_helper.h>
+#include <drm/drm_of.h>
#include <drm/drm_panel.h>
+#include <drm/drm_simple_kms_helper.h>
#include "drm.h"
#include "dc.h"
@@ -26,7 +25,7 @@
* ignore any other means of obtaining a mode.
*/
if (output->panel) {
- err = output->panel->funcs->get_modes(output->panel);
+ err = drm_panel_get_modes(output->panel, connector);
if (err > 0)
return err;
}
@@ -36,7 +35,7 @@
else if (output->ddc)
edid = drm_get_edid(connector, output->ddc);
- cec_notifier_set_phys_addr_from_edid(output->notifier, edid);
+ cec_notifier_set_phys_addr_from_edid(output->cec, edid);
drm_connector_update_edid_property(connector, edid);
if (edid) {
@@ -53,18 +52,11 @@
struct tegra_output *output = connector_to_output(connector);
enum drm_connector_status status = connector_status_unknown;
- if (gpio_is_valid(output->hpd_gpio)) {
- if (output->hpd_gpio_flags & OF_GPIO_ACTIVE_LOW) {
- if (gpio_get_value(output->hpd_gpio) != 0)
- status = connector_status_disconnected;
- else
- status = connector_status_connected;
- } else {
- if (gpio_get_value(output->hpd_gpio) == 0)
- status = connector_status_disconnected;
- else
- status = connector_status_connected;
- }
+ if (output->hpd_gpio) {
+ if (gpiod_get_value(output->hpd_gpio) == 0)
+ status = connector_status_disconnected;
+ else
+ status = connector_status_connected;
} else {
if (!output->panel)
status = connector_status_disconnected;
@@ -73,20 +65,20 @@
}
if (status != connector_status_connected)
- cec_notifier_phys_addr_invalidate(output->notifier);
+ cec_notifier_phys_addr_invalidate(output->cec);
return status;
}
void tegra_output_connector_destroy(struct drm_connector *connector)
{
+ struct tegra_output *output = connector_to_output(connector);
+
+ if (output->cec)
+ cec_notifier_conn_unregister(output->cec);
+
drm_connector_unregister(connector);
drm_connector_cleanup(connector);
-}
-
-void tegra_output_encoder_destroy(struct drm_encoder *encoder)
-{
- drm_encoder_cleanup(encoder);
}
static irqreturn_t hpd_irq(int irq, void *data)
@@ -102,51 +94,61 @@
int tegra_output_probe(struct tegra_output *output)
{
struct device_node *ddc, *panel;
+ unsigned long flags;
int err, size;
if (!output->of_node)
output->of_node = output->dev->of_node;
+ err = drm_of_find_panel_or_bridge(output->of_node, -1, -1,
+ &output->panel, &output->bridge);
+ if (err && err != -ENODEV)
+ return err;
+
panel = of_parse_phandle(output->of_node, "nvidia,panel", 0);
if (panel) {
+ /*
+ * Don't mix nvidia,panel phandle with the graph in a
+ * device-tree.
+ */
+ WARN_ON(output->panel || output->bridge);
+
output->panel = of_drm_find_panel(panel);
+ of_node_put(panel);
+
if (IS_ERR(output->panel))
return PTR_ERR(output->panel);
-
- of_node_put(panel);
}
output->edid = of_get_property(output->of_node, "nvidia,edid", &size);
ddc = of_parse_phandle(output->of_node, "nvidia,ddc-i2c-bus", 0);
if (ddc) {
- output->ddc = of_find_i2c_adapter_by_node(ddc);
+ output->ddc = of_get_i2c_adapter_by_node(ddc);
+ of_node_put(ddc);
+
if (!output->ddc) {
err = -EPROBE_DEFER;
- of_node_put(ddc);
return err;
}
-
- of_node_put(ddc);
}
- output->hpd_gpio = of_get_named_gpio_flags(output->of_node,
- "nvidia,hpd-gpio", 0,
- &output->hpd_gpio_flags);
- if (gpio_is_valid(output->hpd_gpio)) {
- unsigned long flags;
+ output->hpd_gpio = devm_gpiod_get_from_of_node(output->dev,
+ output->of_node,
+ "nvidia,hpd-gpio", 0,
+ GPIOD_IN,
+ "HDMI hotplug detect");
+ if (IS_ERR(output->hpd_gpio)) {
+ if (PTR_ERR(output->hpd_gpio) != -ENOENT)
+ return PTR_ERR(output->hpd_gpio);
- err = gpio_request_one(output->hpd_gpio, GPIOF_DIR_IN,
- "HDMI hotplug detect");
- if (err < 0) {
- dev_err(output->dev, "gpio_request_one(): %d\n", err);
- return err;
- }
+ output->hpd_gpio = NULL;
+ }
- err = gpio_to_irq(output->hpd_gpio);
+ if (output->hpd_gpio) {
+ err = gpiod_to_irq(output->hpd_gpio);
if (err < 0) {
- dev_err(output->dev, "gpio_to_irq(): %d\n", err);
- gpio_free(output->hpd_gpio);
+ dev_err(output->dev, "gpiod_to_irq(): %d\n", err);
return err;
}
@@ -160,7 +162,6 @@
if (err < 0) {
dev_err(output->dev, "failed to request IRQ#%u: %d\n",
output->hpd_irq, err);
- gpio_free(output->hpd_gpio);
return err;
}
@@ -179,31 +180,38 @@
void tegra_output_remove(struct tegra_output *output)
{
- if (gpio_is_valid(output->hpd_gpio)) {
+ if (output->hpd_gpio)
free_irq(output->hpd_irq, output);
- gpio_free(output->hpd_gpio);
- }
if (output->ddc)
- put_device(&output->ddc->dev);
+ i2c_put_adapter(output->ddc);
}
int tegra_output_init(struct drm_device *drm, struct tegra_output *output)
{
- int err;
-
- if (output->panel) {
- err = drm_panel_attach(output->panel, &output->connector);
- if (err < 0)
- return err;
- }
+ int connector_type;
/*
* The connector is now registered and ready to receive hotplug events
* so the hotplug interrupt can be enabled.
*/
- if (gpio_is_valid(output->hpd_gpio))
+ if (output->hpd_gpio)
enable_irq(output->hpd_irq);
+
+ connector_type = output->connector.connector_type;
+ /*
+ * Create a CEC notifier for HDMI connector.
+ */
+ if (connector_type == DRM_MODE_CONNECTOR_HDMIA ||
+ connector_type == DRM_MODE_CONNECTOR_HDMIB) {
+ struct cec_connector_info conn_info;
+
+ cec_fill_conn_info_from_drm(&conn_info, &output->connector);
+ output->cec = cec_notifier_conn_register(output->dev, NULL,
+ &conn_info);
+ if (!output->cec)
+ return -ENOMEM;
+ }
return 0;
}
@@ -214,11 +222,8 @@
* The connector is going away, so the interrupt must be disabled to
* prevent the hotplug interrupt handler from potentially crashing.
*/
- if (gpio_is_valid(output->hpd_gpio))
+ if (output->hpd_gpio)
disable_irq(output->hpd_irq);
-
- if (output->panel)
- drm_panel_detach(output->panel);
}
void tegra_output_find_possible_crtcs(struct tegra_output *output,
@@ -242,3 +247,19 @@
output->encoder.possible_crtcs = mask;
}
+
+int tegra_output_suspend(struct tegra_output *output)
+{
+ if (output->hpd_irq)
+ disable_irq(output->hpd_irq);
+
+ return 0;
+}
+
+int tegra_output_resume(struct tegra_output *output)
+{
+ if (output->hpd_irq)
+ enable_irq(output->hpd_irq);
+
+ return 0;
+}
--
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