Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- drivers/video/panel/Kconfig | 11 ++++ drivers/video/panel/Makefile | 1 + drivers/video/panel/panel-dummy.c | 103 +++++++++++++++++++++++++++++++++++++ include/video/panel-dummy.h | 25 +++++++++ 4 files changed, 140 insertions(+), 0 deletions(-) create mode 100644 drivers/video/panel/panel-dummy.c create mode 100644 include/video/panel-dummy.h
diff --git a/drivers/video/panel/Kconfig b/drivers/video/panel/Kconfig index 26b1787..36fb9ca 100644 --- a/drivers/video/panel/Kconfig +++ b/drivers/video/panel/Kconfig @@ -2,3 +2,14 @@ menuconfig DISPLAY_PANEL tristate "Display Panel" ---help--- Support for display panels for graphics devices. + +if DISPLAY_PANEL + +config DISPLAY_PANEL_DUMMY + tristate "Dummy Display Panel" + ---help--- + Support dummy panels with no control bus. + + If you are in doubt, say N. + +endif # DISPLAY_PANEL diff --git a/drivers/video/panel/Makefile b/drivers/video/panel/Makefile index cf5c5e2..9fc05c2 100644 --- a/drivers/video/panel/Makefile +++ b/drivers/video/panel/Makefile @@ -1 +1,2 @@ obj-$(CONFIG_DISPLAY_PANEL) += panel.o +obj-$(CONFIG_DISPLAY_PANEL_DUMMY) += panel-dummy.o diff --git a/drivers/video/panel/panel-dummy.c b/drivers/video/panel/panel-dummy.c new file mode 100644 index 0000000..9ba1447 --- /dev/null +++ b/drivers/video/panel/panel-dummy.c @@ -0,0 +1,103 @@ +/* + * Dummy Display Panel + * + * Copyright (C) 2012 Renesas Solutions Corp. + * + * Contacts: Laurent Pinchart laurent.pinchart@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 <video/panel-dummy.h> + +struct panel_dummy { + struct panel panel; + const struct panel_dummy_platform_data *pdata; +}; + +#define to_panel_dummy(p) container_of(p, struct panel_dummy, panel) + +static int panel_dummy_get_modes(struct panel *p, + const struct fb_videomode **modes) +{ + struct panel_dummy *panel = to_panel_dummy(p); + + *modes = panel->pdata->mode; + return 1; +} + +static const struct panel_ops panel_dummy_ops = { + .get_modes = panel_dummy_get_modes, +}; + +static void panel_dummy_release(struct panel *p) +{ + struct panel_dummy *panel = to_panel_dummy(p); + + kfree(panel); +} + +static int panel_dummy_remove(struct platform_device *pdev) +{ + struct panel_dummy *panel = platform_get_drvdata(pdev); + + platform_set_drvdata(pdev, NULL); + panel_unregister(&panel->panel); + + return 0; +} + +static int __devinit panel_dummy_probe(struct platform_device *pdev) +{ + const struct panel_dummy_platform_data *pdata = pdev->dev.platform_data; + struct panel_dummy *panel; + int ret; + + if (pdata == NULL) + return -ENODEV; + + panel = kzalloc(sizeof(*panel), GFP_KERNEL); + if (panel == NULL) + return -ENOMEM; + + panel->pdata = pdata; + panel->panel.dev = &pdev->dev; + panel->panel.release = panel_dummy_release; + panel->panel.ops = &panel_dummy_ops; + panel->panel.width = pdata->width; + panel->panel.height = pdata->height; + + ret = panel_register(&panel->panel); + if (ret < 0) { + kfree(panel); + return ret; + } + + platform_set_drvdata(pdev, panel); + + return 0; +} + +static const struct dev_pm_ops panel_dummy_dev_pm_ops = { +}; + +static struct platform_driver panel_dummy_driver = { + .probe = panel_dummy_probe, + .remove = panel_dummy_remove, + .driver = { + .name = "panel_dummy", + .owner = THIS_MODULE, + .pm = &panel_dummy_dev_pm_ops, + }, +}; + +module_platform_driver(panel_dummy_driver); + +MODULE_AUTHOR("Laurent Pinchart laurent.pinchart@ideasonboard.com"); +MODULE_DESCRIPTION("Dummy Display Panel"); +MODULE_LICENSE("GPL"); diff --git a/include/video/panel-dummy.h b/include/video/panel-dummy.h new file mode 100644 index 0000000..558a297 --- /dev/null +++ b/include/video/panel-dummy.h @@ -0,0 +1,25 @@ +/* + * Dummy Display Panel + * + * Copyright (C) 2012 Renesas Solutions Corp. + * + * Contacts: Laurent Pinchart laurent.pinchart@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_DUMMY_H__ +#define __PANEL_DUMMY_H__ + +#include <linux/fb.h> +#include <video/panel.h> + +struct panel_dummy_platform_data { + unsigned long width; /* Panel width in mm */ + unsigned long height; /* Panel height in mm */ + const struct fb_videomode *mode; +}; + +#endif /* __PANEL_DUMMY_H__ */