Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
---
drivers/video/display/chip-tfp410.c | 164 +++++++++++++++++++++++++++++++++++
include/video/omap-panel-tfp410.h | 4 +
2 files changed, 168 insertions(+)
create mode 100644 drivers/video/display/chip-tfp410.c
diff --git a/drivers/video/display/chip-tfp410.c
b/drivers/video/display/chip-tfp410.c
new file mode 100644
index 0000000..2f8bdb6
--- /dev/null
+++ b/drivers/video/display/chip-tfp410.c
@@ -0,0 +1,164 @@
+/*
+ * TFP410 DPI-to-DVI bridge
+ *
+ * Copyright (C) 2012 Texas Instruments
+ *
+ * Contacts: Tomi Valkeinen <tomi.valkeinen at 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/gpio.h>
+#include <linux/platform_device.h>
+
+#include <video/display.h>
+#include <video/omap-panel-tfp410.h>
+
+struct tfp410_data {
+ struct video_source *in;
+
+ struct video_source out;
+
+ int power_down_gpio;
+};
+
+#define to_tfp410(p) container_of(p, struct tfp410_data, out)
+
+static int tfp410_set_stream(struct video_source *src,
+ enum video_source_stream_state state)
+{
+ struct tfp410_data *data = to_tfp410(src);
+ struct video_source *in = data->in;
+ int r;
+
+ r = in->common_ops->set_stream(in, state);
+ if (r)
+ return r;
+
+ switch (state) {
+ case DISPLAY_ENTITY_STREAM_STOPPED:
+ printk("tfp410 set_stream: STOPPED\n");
+
+ gpio_set_value_cansleep(data->power_down_gpio, 0);
+
+ break;
+
+ case DISPLAY_ENTITY_STREAM_CONTINUOUS:
+ printk("tfp410 set_stream: CONTINUOUS\n");
+
+ gpio_set_value_cansleep(data->power_down_gpio, 1);
+
+ break;
+
+ default:
+ printk("tfp410 set_stream error\n");
+ break;
+ }
+
+ return 0;
+}
+
+static int tfp410_set_vm(struct video_source *src, const struct videomode *vm)
+{
+ struct tfp410_data *data = to_tfp410(src);
+ struct video_source *in = data->in;
+
+ printk("tfp410 set vm\n");
+
+ return in->ops.dpi->set_videomode(in, vm);
+}
+
+static const struct common_video_source_ops tfp410_common_ops = {
+ .set_stream = tfp410_set_stream,
+};
+
+static const struct dvi_video_source_ops tfp410_dvi_ops = {
+ .set_videomode = tfp410_set_vm,
+};
+
+static void tfp410_release(struct video_source *src)
+{
+ printk("tfp410 entity release\n");
+}
+
+static int __devinit tfp410_probe(struct platform_device *pdev)
+{
+ const struct tfp410_platform_data *pdata = pdev->dev.platform_data;
+ struct tfp410_data *data;
+ int r;
+
+ if (pdata == NULL)
+ return -ENODEV;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (data == NULL)
+ return -ENOMEM;
+
+ data->power_down_gpio = pdata->power_down_gpio;
+
+ r = devm_gpio_request_one(&pdev->dev, pdata->power_down_gpio,
+ GPIOF_OUT_INIT_LOW, "tfp410 pd");
+ if (r) {
+ printk("failed to request pd gpio\n");
+ return r;
+ }
+
+ /* setup input */
+
+ data->in = video_source_find(pdata->video_source);
+ if (data->in == NULL) {
+ printk("failed to get video source\n");
+ return -EINVAL;
+ }
+
+ data->in->ops.dpi->set_data_lines(data->in, 24);
+
+ /* setup output */
+
+ data->out.dev = &pdev->dev;
+ data->out.release = tfp410_release;
+ data->out.common_ops = &tfp410_common_ops;
+ data->out.ops.dvi = &tfp410_dvi_ops;
+ data->out.name = pdata->video_output;
+
+ r = video_source_register(&data->out);
+ if (r < 0) {
+ printk("tfp410 entity register failed\n");
+ video_source_put(data->in);
+ return r;
+ }
+
+ platform_set_drvdata(pdev, data);
+
+ return 0;
+}
+
+static int tfp410_remove(struct platform_device *pdev)
+{
+ struct tfp410_data *data = platform_get_drvdata(pdev);
+
+ video_source_unregister(&data->out);
+
+ video_source_put(data->in);
+
+ return 0;
+}
+
+static struct platform_driver tfp410_driver = {
+ .probe = tfp410_probe,
+ .remove = tfp410_remove,
+ .driver = {
+ .name = "tfp410",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(tfp410_driver);
+
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen at ti.com>");
+MODULE_DESCRIPTION("TFP410 DPI-to-DVI Bridge");
+MODULE_LICENSE("GPL");
diff --git a/include/video/omap-panel-tfp410.h
b/include/video/omap-panel-tfp410.h
index b5b05f4..18f2b46 100644
--- a/include/video/omap-panel-tfp410.h
+++ b/include/video/omap-panel-tfp410.h
@@ -30,6 +30,10 @@ struct omap_dss_device;
*/
struct tfp410_platform_data {
const char *name;
+
+ const char *video_source;
+ const char *video_output;
+
u16 i2c_bus_num;
int power_down_gpio;
};
--
1.7.10.4
