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path: root/drivers/media/video/s5p-tv/hdmiphy_drv.c
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Diffstat (limited to 'drivers/media/video/s5p-tv/hdmiphy_drv.c')
-rw-r--r--drivers/media/video/s5p-tv/hdmiphy_drv.c188
1 files changed, 188 insertions, 0 deletions
diff --git a/drivers/media/video/s5p-tv/hdmiphy_drv.c b/drivers/media/video/s5p-tv/hdmiphy_drv.c
new file mode 100644
index 00000000000..6693f4aff10
--- /dev/null
+++ b/drivers/media/video/s5p-tv/hdmiphy_drv.c
@@ -0,0 +1,188 @@
+/*
+ * Samsung HDMI Physical interface driver
+ *
+ * Copyright (C) 2010-2011 Samsung Electronics Co.Ltd
+ * Author: Tomasz Stanislawski <t.stanislaws@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/err.h>
+
+#include <media/v4l2-subdev.h>
+
+MODULE_AUTHOR("Tomasz Stanislawski <t.stanislaws@samsung.com>");
+MODULE_DESCRIPTION("Samsung HDMI Physical interface driver");
+MODULE_LICENSE("GPL");
+
+struct hdmiphy_conf {
+ u32 preset;
+ const u8 *data;
+};
+
+static const u8 hdmiphy_conf27[32] = {
+ 0x01, 0x05, 0x00, 0xD8, 0x10, 0x1C, 0x30, 0x40,
+ 0x6B, 0x10, 0x02, 0x51, 0xDf, 0xF2, 0x54, 0x87,
+ 0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xE0,
+ 0x22, 0x40, 0xe3, 0x26, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const u8 hdmiphy_conf74_175[32] = {
+ 0x01, 0x05, 0x00, 0xD8, 0x10, 0x9C, 0xef, 0x5B,
+ 0x6D, 0x10, 0x01, 0x51, 0xef, 0xF3, 0x54, 0xb9,
+ 0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xE0,
+ 0x22, 0x40, 0xa5, 0x26, 0x01, 0x00, 0x00, 0x00,
+};
+
+static const u8 hdmiphy_conf74_25[32] = {
+ 0x01, 0x05, 0x00, 0xd8, 0x10, 0x9c, 0xf8, 0x40,
+ 0x6a, 0x10, 0x01, 0x51, 0xff, 0xf1, 0x54, 0xba,
+ 0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xe0,
+ 0x22, 0x40, 0xa4, 0x26, 0x01, 0x00, 0x00, 0x00,
+};
+
+static const u8 hdmiphy_conf148_5[32] = {
+ 0x01, 0x05, 0x00, 0xD8, 0x10, 0x9C, 0xf8, 0x40,
+ 0x6A, 0x18, 0x00, 0x51, 0xff, 0xF1, 0x54, 0xba,
+ 0x84, 0x00, 0x10, 0x38, 0x00, 0x08, 0x10, 0xE0,
+ 0x22, 0x40, 0xa4, 0x26, 0x02, 0x00, 0x00, 0x00,
+};
+
+static const struct hdmiphy_conf hdmiphy_conf[] = {
+ { V4L2_DV_480P59_94, hdmiphy_conf27 },
+ { V4L2_DV_1080P30, hdmiphy_conf74_175 },
+ { V4L2_DV_720P59_94, hdmiphy_conf74_175 },
+ { V4L2_DV_720P60, hdmiphy_conf74_25 },
+ { V4L2_DV_1080P50, hdmiphy_conf148_5 },
+ { V4L2_DV_1080P60, hdmiphy_conf148_5 },
+};
+
+const u8 *hdmiphy_preset2conf(u32 preset)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(hdmiphy_conf); ++i)
+ if (hdmiphy_conf[i].preset == preset)
+ return hdmiphy_conf[i].data;
+ return NULL;
+}
+
+static int hdmiphy_s_power(struct v4l2_subdev *sd, int on)
+{
+ /* to be implemented */
+ return 0;
+}
+
+static int hdmiphy_s_dv_preset(struct v4l2_subdev *sd,
+ struct v4l2_dv_preset *preset)
+{
+ const u8 *data;
+ u8 buffer[32];
+ int ret;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct device *dev = &client->dev;
+
+ dev_info(dev, "s_dv_preset(preset = %d)\n", preset->preset);
+ data = hdmiphy_preset2conf(preset->preset);
+ if (!data) {
+ dev_err(dev, "format not supported\n");
+ return -EINVAL;
+ }
+
+ /* storing configuration to the device */
+ memcpy(buffer, data, 32);
+ ret = i2c_master_send(client, buffer, 32);
+ if (ret != 32) {
+ dev_err(dev, "failed to configure HDMIPHY via I2C\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int hdmiphy_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct device *dev = &client->dev;
+ u8 buffer[2];
+ int ret;
+
+ dev_info(dev, "s_stream(%d)\n", enable);
+ /* going to/from configuration from/to operation mode */
+ buffer[0] = 0x1f;
+ buffer[1] = enable ? 0x80 : 0x00;
+
+ ret = i2c_master_send(client, buffer, 2);
+ if (ret != 2) {
+ dev_err(dev, "stream (%d) failed\n", enable);
+ return -EIO;
+ }
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops hdmiphy_core_ops = {
+ .s_power = hdmiphy_s_power,
+};
+
+static const struct v4l2_subdev_video_ops hdmiphy_video_ops = {
+ .s_dv_preset = hdmiphy_s_dv_preset,
+ .s_stream = hdmiphy_s_stream,
+};
+
+static const struct v4l2_subdev_ops hdmiphy_ops = {
+ .core = &hdmiphy_core_ops,
+ .video = &hdmiphy_video_ops,
+};
+
+static int __devinit hdmiphy_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ static struct v4l2_subdev sd;
+
+ v4l2_i2c_subdev_init(&sd, client, &hdmiphy_ops);
+ dev_info(&client->dev, "probe successful\n");
+ return 0;
+}
+
+static int __devexit hdmiphy_remove(struct i2c_client *client)
+{
+ dev_info(&client->dev, "remove successful\n");
+ return 0;
+}
+
+static const struct i2c_device_id hdmiphy_id[] = {
+ { "hdmiphy", 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, hdmiphy_id);
+
+static struct i2c_driver hdmiphy_driver = {
+ .driver = {
+ .name = "s5p-hdmiphy",
+ .owner = THIS_MODULE,
+ },
+ .probe = hdmiphy_probe,
+ .remove = __devexit_p(hdmiphy_remove),
+ .id_table = hdmiphy_id,
+};
+
+static int __init hdmiphy_init(void)
+{
+ return i2c_add_driver(&hdmiphy_driver);
+}
+module_init(hdmiphy_init);
+
+static void __exit hdmiphy_exit(void)
+{
+ i2c_del_driver(&hdmiphy_driver);
+}
+module_exit(hdmiphy_exit);