Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com --- drivers/video/display/panel-dvi.c | 164 +++++++++++++++++++++++++++++++++++++ include/video/panel-dvi.h | 18 ++++ 2 files changed, 182 insertions(+) create mode 100644 drivers/video/display/panel-dvi.c create mode 100644 include/video/panel-dvi.h
diff --git a/drivers/video/display/panel-dvi.c b/drivers/video/display/panel-dvi.c new file mode 100644 index 0000000..01cea09 --- /dev/null +++ b/drivers/video/display/panel-dvi.c @@ -0,0 +1,164 @@ +/* + * Generic DVI monitor + * + * Copyright (C) 2012 Texas Instruments + * + * Contacts: Tomi Valkeinen tomi.valkeinen@ti.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 <video/display.h> +#include <video/panel-dvi.h> + +struct panel_data { + struct display_entity entity; + struct video_source *in; +}; + +#define to_panel(p) container_of(p, struct panel_data, entity) + +static int panel_dvi_set_state(struct display_entity *entity, + enum display_entity_state state) +{ + struct panel_data *data = to_panel(entity); + struct video_source *in = data->in; + + switch (state) { + case DISPLAY_ENTITY_STATE_OFF: + case DISPLAY_ENTITY_STATE_STANDBY: + in->common_ops->set_stream(in, DISPLAY_ENTITY_STREAM_STOPPED); + break; + + case DISPLAY_ENTITY_STATE_ON: + in->common_ops->set_stream(in, DISPLAY_ENTITY_STREAM_CONTINUOUS); + break; + } + + return 0; +} + +static const struct videomode vga_mode = { + .pixelclock = 23500, + + .hactive = 640, + .hfront_porch = 48, + .hback_porch = 80, + .hsync_len = 32, + + .vactive = 480, + .vfront_porch = 3, + .vback_porch = 7, + .vsync_len = 4, + + .hah = true, + .vah = true, + .de = true, +}; + +static int panel_dvi_get_modes(struct display_entity *entity, + const struct videomode **modes) +{ + //struct panel_data *data = to_panel(entity); + + *modes = &vga_mode; + return 1; +} + +static int panel_dvi_get_size(struct display_entity *entity, + unsigned int *width, unsigned int *height) +{ + //struct panel_data *data = to_panel(entity); + + *width = 10; + *height = 10; + return 0; +} + +static const struct display_entity_control_ops panel_dvi_control_ops = { + .set_state = panel_dvi_set_state, + .get_modes = panel_dvi_get_modes, + .get_size = panel_dvi_get_size, +}; + +static void panel_dvi_release(struct display_entity *entity) +{ + printk("panel dvi release\n"); +} + +static int __devinit panel_dvi_probe(struct platform_device *pdev) +{ + const struct panel_dvi_platform_data *pdata = pdev->dev.platform_data; + struct panel_data *data; + int ret; + + if (pdata == NULL) + return -ENODEV; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (data == NULL) + return -ENOMEM; + + /* setup input */ + data->in = video_source_find(pdata->video_source); + if (data->in == NULL) { + printk("failed to get video source\n"); + return -EINVAL; + } + + /* setup default mode */ + data->in->ops.dvi->set_videomode(data->in, &vga_mode); + + /* setup panel entity */ + + data->entity.dev = &pdev->dev; + data->entity.release = panel_dvi_release; + data->entity.ops = &panel_dvi_control_ops; + + ret = display_entity_register(&data->entity); + if (ret < 0) { + video_source_put(data->in); + return ret; + } + + platform_set_drvdata(pdev, data); + + return 0; +} + +static int panel_dvi_remove(struct platform_device *pdev) +{ + struct panel_data *data = platform_get_drvdata(pdev); + + display_entity_unregister(&data->entity); + + video_source_put(data->in); + + return 0; +} + + +static const struct dev_pm_ops panel_dvi_dev_pm_ops = { +}; + +static struct platform_driver panel_dvi_driver = { + .probe = panel_dvi_probe, + .remove = panel_dvi_remove, + .driver = { + .name = "panel_dvi", + .owner = THIS_MODULE, + .pm = &panel_dvi_dev_pm_ops, + }, +}; + +module_platform_driver(panel_dvi_driver); + +MODULE_AUTHOR("Tomi Valkeinen tomi.valkeinen@ti.com"); +MODULE_DESCRIPTION("DVI Monitor"); +MODULE_LICENSE("GPL"); diff --git a/include/video/panel-dvi.h b/include/video/panel-dvi.h new file mode 100644 index 0000000..ab88380 --- /dev/null +++ b/include/video/panel-dvi.h @@ -0,0 +1,18 @@ +/* + * DVI Display Panel + * + * 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_DVI_H__ +#define __PANEL_DVI_H__ + +#include <linux/videomode.h> + +struct panel_dvi_platform_data { + const char *video_source; +}; + +#endif /* __PANEL_DVI_H__ */