/* * 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, }; module_i2c_driver(hdmiphy_driver);