179 lines
4.5 KiB
C
179 lines
4.5 KiB
C
/*
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* Samsung HDMI Physical interface driver
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*
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* Copyright (C) 2010-2011 Samsung Electronics Co.Ltd
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* Author: Tomasz Stanislawski <t.stanislaws@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/err.h>
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#include <media/v4l2-subdev.h>
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MODULE_AUTHOR("Tomasz Stanislawski <t.stanislaws@samsung.com>");
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MODULE_DESCRIPTION("Samsung HDMI Physical interface driver");
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MODULE_LICENSE("GPL");
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struct hdmiphy_conf {
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u32 preset;
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const u8 *data;
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};
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static const u8 hdmiphy_conf27[32] = {
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0x01, 0x05, 0x00, 0xD8, 0x10, 0x1C, 0x30, 0x40,
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0x6B, 0x10, 0x02, 0x51, 0xDf, 0xF2, 0x54, 0x87,
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0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xE0,
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0x22, 0x40, 0xe3, 0x26, 0x00, 0x00, 0x00, 0x00,
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};
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static const u8 hdmiphy_conf74_175[32] = {
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0x01, 0x05, 0x00, 0xD8, 0x10, 0x9C, 0xef, 0x5B,
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0x6D, 0x10, 0x01, 0x51, 0xef, 0xF3, 0x54, 0xb9,
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0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xE0,
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0x22, 0x40, 0xa5, 0x26, 0x01, 0x00, 0x00, 0x00,
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};
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static const u8 hdmiphy_conf74_25[32] = {
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0x01, 0x05, 0x00, 0xd8, 0x10, 0x9c, 0xf8, 0x40,
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0x6a, 0x10, 0x01, 0x51, 0xff, 0xf1, 0x54, 0xba,
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0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xe0,
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0x22, 0x40, 0xa4, 0x26, 0x01, 0x00, 0x00, 0x00,
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};
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static const u8 hdmiphy_conf148_5[32] = {
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0x01, 0x05, 0x00, 0xD8, 0x10, 0x9C, 0xf8, 0x40,
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0x6A, 0x18, 0x00, 0x51, 0xff, 0xF1, 0x54, 0xba,
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0x84, 0x00, 0x10, 0x38, 0x00, 0x08, 0x10, 0xE0,
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0x22, 0x40, 0xa4, 0x26, 0x02, 0x00, 0x00, 0x00,
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};
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static const struct hdmiphy_conf hdmiphy_conf[] = {
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{ V4L2_DV_480P59_94, hdmiphy_conf27 },
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{ V4L2_DV_1080P30, hdmiphy_conf74_175 },
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{ V4L2_DV_720P59_94, hdmiphy_conf74_175 },
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{ V4L2_DV_720P60, hdmiphy_conf74_25 },
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{ V4L2_DV_1080P50, hdmiphy_conf148_5 },
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{ V4L2_DV_1080P60, hdmiphy_conf148_5 },
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};
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const u8 *hdmiphy_preset2conf(u32 preset)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(hdmiphy_conf); ++i)
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if (hdmiphy_conf[i].preset == preset)
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return hdmiphy_conf[i].data;
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return NULL;
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}
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static int hdmiphy_s_power(struct v4l2_subdev *sd, int on)
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{
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/* to be implemented */
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return 0;
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}
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static int hdmiphy_s_dv_preset(struct v4l2_subdev *sd,
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struct v4l2_dv_preset *preset)
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{
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const u8 *data;
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u8 buffer[32];
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int ret;
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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struct device *dev = &client->dev;
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dev_info(dev, "s_dv_preset(preset = %d)\n", preset->preset);
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data = hdmiphy_preset2conf(preset->preset);
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if (!data) {
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dev_err(dev, "format not supported\n");
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return -EINVAL;
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}
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/* storing configuration to the device */
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memcpy(buffer, data, 32);
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ret = i2c_master_send(client, buffer, 32);
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if (ret != 32) {
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dev_err(dev, "failed to configure HDMIPHY via I2C\n");
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return -EIO;
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}
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return 0;
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}
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static int hdmiphy_s_stream(struct v4l2_subdev *sd, int enable)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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struct device *dev = &client->dev;
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u8 buffer[2];
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int ret;
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dev_info(dev, "s_stream(%d)\n", enable);
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/* going to/from configuration from/to operation mode */
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buffer[0] = 0x1f;
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buffer[1] = enable ? 0x80 : 0x00;
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ret = i2c_master_send(client, buffer, 2);
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if (ret != 2) {
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dev_err(dev, "stream (%d) failed\n", enable);
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return -EIO;
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}
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return 0;
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}
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static const struct v4l2_subdev_core_ops hdmiphy_core_ops = {
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.s_power = hdmiphy_s_power,
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};
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static const struct v4l2_subdev_video_ops hdmiphy_video_ops = {
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.s_dv_preset = hdmiphy_s_dv_preset,
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.s_stream = hdmiphy_s_stream,
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};
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static const struct v4l2_subdev_ops hdmiphy_ops = {
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.core = &hdmiphy_core_ops,
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.video = &hdmiphy_video_ops,
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};
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static int __devinit hdmiphy_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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static struct v4l2_subdev sd;
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v4l2_i2c_subdev_init(&sd, client, &hdmiphy_ops);
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dev_info(&client->dev, "probe successful\n");
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return 0;
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}
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static int __devexit hdmiphy_remove(struct i2c_client *client)
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{
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dev_info(&client->dev, "remove successful\n");
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return 0;
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}
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static const struct i2c_device_id hdmiphy_id[] = {
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{ "hdmiphy", 0 },
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{ },
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};
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MODULE_DEVICE_TABLE(i2c, hdmiphy_id);
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static struct i2c_driver hdmiphy_driver = {
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.driver = {
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.name = "s5p-hdmiphy",
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.owner = THIS_MODULE,
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},
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.probe = hdmiphy_probe,
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.remove = __devexit_p(hdmiphy_remove),
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.id_table = hdmiphy_id,
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};
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module_i2c_driver(hdmiphy_driver);
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