From: Laurent Pinchart <laurent.pinchart+rene...@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
---
drivers/video/display/Kconfig | 13 +++
drivers/video/display/Makefile | 1 +
drivers/video/display/panel-dpi.c | 147 +++++++++++++++++++++++++++++++++++++
include/video/panel-dpi.h | 24 ++++++
4 files changed, 185 insertions(+), 0 deletions(-)
create mode 100644 drivers/video/display/panel-dpi.c
create mode 100644 include/video/panel-dpi.h
diff --git a/drivers/video/display/Kconfig b/drivers/video/display/Kconfig
index 1d533e7..0f9b990 100644
--- a/drivers/video/display/Kconfig
+++ b/drivers/video/display/Kconfig
@@ -2,3 +2,16 @@ menuconfig DISPLAY_CORE
tristate "Display Core"
---help---
Support common display framework for graphics devices.
+
+if DISPLAY_CORE
+
+config DISPLAY_PANEL_DPI
+ tristate "DPI (Parallel) Display Panels"
+ ---help---
+ Support for simple digital (parallel) pixel interface panels. Those
+ panels receive pixel data through a parallel bus and have no control
+ bus.
+
+ If you are in doubt, say N.
+
+endif # DISPLAY_CORE
diff --git a/drivers/video/display/Makefile b/drivers/video/display/Makefile
index bd93496..47978d4 100644
--- a/drivers/video/display/Makefile
+++ b/drivers/video/display/Makefile
@@ -1 +1,2 @@
obj-$(CONFIG_DISPLAY_CORE) += display-core.o
+obj-$(CONFIG_DISPLAY_PANEL_DPI) += panel-dpi.o
diff --git a/drivers/video/display/panel-dpi.c
b/drivers/video/display/panel-dpi.c
new file mode 100644
index 0000000..c56197a
--- /dev/null
+++ b/drivers/video/display/panel-dpi.c
@@ -0,0 +1,147 @@
+/*
+ * DPI Display Panel
+ *
+ * Copyright (C) 2012 Renesas Solutions Corp.
+ *
+ * Contacts: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
+ *
+ * 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 <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <video/display.h>
+#include <video/panel-dpi.h>
+
+struct panel_dpi {
+ struct display_entity entity;
+ const struct panel_dpi_platform_data *pdata;
+};
+
+#define to_panel_dpi(p) container_of(p, struct panel_dpi,
entity)
+
+static const struct display_entity_interface_params panel_dpi_params = {
+ .type = DISPLAY_ENTITY_INTERFACE_DPI,
+};
+
+static int panel_dpi_set_state(struct display_entity *entity,
+ enum display_entity_state state)
+{
+ switch (state) {
+ case DISPLAY_ENTITY_STATE_OFF:
+ case DISPLAY_ENTITY_STATE_STANDBY:
+ display_entity_set_stream(entity->source,
+ DISPLAY_ENTITY_STREAM_STOPPED);
+ break;
+
+ case DISPLAY_ENTITY_STATE_ON:
+ display_entity_set_stream(entity->source,
+ DISPLAY_ENTITY_STREAM_CONTINUOUS);
+ break;
+ }
+
+ return 0;
+}
+
+static int panel_dpi_get_modes(struct display_entity *entity,
+ const struct videomode **modes)
+{
+ struct panel_dpi *panel = to_panel_dpi(entity);
+
+ *modes = panel->pdata->mode;
+ return 1;
+}
+
+static int panel_dpi_get_size(struct display_entity *entity,
+ unsigned int *width, unsigned int *height)
+{
+ struct panel_dpi *panel = to_panel_dpi(entity);
+
+ *width = panel->pdata->width;
+ *height = panel->pdata->height;
+ return 0;
+}
+
+static int panel_dpi_get_params(struct display_entity *entity,
+ struct display_entity_interface_params *params)
+{
+ *params = panel_dpi_params;
+ return 0;
+}
+
+static const struct display_entity_control_ops panel_dpi_control_ops = {
+ .set_state = panel_dpi_set_state,
+ .get_modes = panel_dpi_get_modes,
+ .get_size = panel_dpi_get_size,
+ .get_params = panel_dpi_get_params,
+};
+
+static void panel_dpi_release(struct display_entity *entity)
+{
+ struct panel_dpi *panel = to_panel_dpi(entity);
+
+ kfree(panel);
+}
+
+static int panel_dpi_remove(struct platform_device *pdev)
+{
+ struct panel_dpi *panel = platform_get_drvdata(pdev);
+
+ platform_set_drvdata(pdev, NULL);
+ display_entity_unregister(&panel->entity);
+
+ return 0;
+}
+
+static int __devinit panel_dpi_probe(struct platform_device *pdev)
+{
+ const struct panel_dpi_platform_data *pdata = pdev->dev.platform_data;
+ struct panel_dpi *panel;
+ int ret;
+
+ if (pdata == NULL)
+ return -ENODEV;
+
+ panel = kzalloc(sizeof(*panel), GFP_KERNEL);
+ if (panel == NULL)
+ return -ENOMEM;
+
+ panel->pdata = pdata;
+ panel->entity.dev = &pdev->dev;
+ panel->entity.release = panel_dpi_release;
+ panel->entity.ops.ctrl = &panel_dpi_control_ops;
+
+ ret = display_entity_register(&panel->entity);
+ if (ret < 0) {
+ kfree(panel);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, panel);
+
+ return 0;
+}
+
+static const struct dev_pm_ops panel_dpi_dev_pm_ops = {
+};
+
+static struct platform_driver panel_dpi_driver = {
+ .probe = panel_dpi_probe,
+ .remove = panel_dpi_remove,
+ .driver = {
+ .name = "panel_dpi",
+ .owner = THIS_MODULE,
+ .pm = &panel_dpi_dev_pm_ops,
+ },
+};
+
+module_platform_driver(panel_dpi_driver);
+
+MODULE_AUTHOR("Laurent Pinchart <laurent.pinch...@ideasonboard.com>");
+MODULE_DESCRIPTION("DPI Display Panel");
+MODULE_LICENSE("GPL");
diff --git a/include/video/panel-dpi.h b/include/video/panel-dpi.h
new file mode 100644
index 0000000..0547b4a
--- /dev/null
+++ b/include/video/panel-dpi.h
@@ -0,0 +1,24 @@
+/*
+ * DPI Display Panel
+ *
+ * Copyright (C) 2012 Renesas Solutions Corp.
+ *
+ * Contacts: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
+ *
+ * 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.
+ */
+
+#ifndef __PANEL_DPI_H__
+#define __PANEL_DPI_H__
+
+#include <linux/videomode.h>
+
+struct panel_dpi_platform_data {
+ unsigned long width; /* Panel width in mm */
+ unsigned long height; /* Panel height in mm */
+ const struct videomode *mode;
+};
+
+#endif /* __PANEL_DPI_H__ */
--
1.7.8.6
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