Fixed MTP to work with TWRP

drivers/gud/gud-exynos7870/TlcTui/Makefile

@@ -0,0 +1,23 @@
+#
+# Makefile for the <t-base trusted UI driver
+#
+
+GUD_ROOT_FOLDER := drivers/gud/
+
+# add our modules to kernel.
+obj-$(CONFIG_TRUSTONIC_TRUSTED_UI) += TlcTui.o
+
+TlcTui-y := main.o tlcTui.o trustedui.o tui-hal.o
+
+# Release mode by default
+ccflags-y += -DNDEBUG
+ccflags-y += -Wno-declaration-after-statement
+
+ccflags-$(CONFIG_MOBICORE_DEBUG) += -DDEBUG
+
+# MobiCore Driver includes
+ccflags-y += -I$(GUD_ROOT_FOLDER)/MobiCoreDriver/public
+
+# MobiCore TlcTui required includes
+ccflags-y += -I$(GUD_ROOT_FOLDER)/TlcTui/inc \
+             -I$(GUD_ROOT_FOLDER)/TlcTui/public

drivers/gud/gud-exynos7870/TlcTui/build_tag.h

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2013-2014 TRUSTONIC LIMITED
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#define MOBICORE_COMPONENT_BUILD_TAG \
+	"t-base-EXYNOS64-Android-310A-V002-20150826_162546_62"

drivers/gud/gud-exynos7870/TlcTui/inc/dciTui.h

@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2013-2015 TRUSTONIC LIMITED
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __DCITUI_H__
+#define __DCITUI_H__
+
+/**< Responses have bit 31 set */
+#define RSP_ID_MASK (1U << 31)
+#define RSP_ID(cmd_id) (((uint32_t)(cmd_id)) | RSP_ID_MASK)
+#define IS_CMD(cmd_id) ((((uint32_t)(cmd_id)) & RSP_ID_MASK) == 0)
+#define IS_RSP(cmd_id) ((((uint32_t)(cmd_id)) & RSP_ID_MASK) == RSP_ID_MASK)
+#define CMD_ID_FROM_RSP(rsp_id) (rsp_id & (~RSP_ID_MASK))
+
+/**
+ * Return codes of driver commands.
+ */
+#define TUI_DCI_OK                      0x00030000
+#define TUI_DCI_ERR_UNKNOWN_CMD         0x00030001
+#define TUI_DCI_ERR_NOT_SUPPORTED       0x00030002
+#define TUI_DCI_ERR_INTERNAL_ERROR      0x00030003
+#define TUI_DCI_ERR_NO_RESPONSE         0x00030004
+#define TUI_DCI_ERR_BAD_PARAMETERS      0x00030005
+#define TUI_DCI_ERR_NO_EVENT            0x00030006
+#define TUI_DCI_ERR_OUT_OF_DISPLAY      0x00030007
+/* ... add more error codes when needed */
+
+
+/**
+ * Notification ID's for communication Trustlet Connector -> Driver.
+ */
+#define NOT_TUI_NONE                0
+/* NWd system event that closes the current TUI session*/
+#define NOT_TUI_CANCEL_EVENT        1
+
+
+/**
+ * Command ID's for communication Driver -> Trustlet Connector.
+ */
+#define CMD_TUI_SW_NONE             0
+/* SWd request to NWd to start the TUI session */
+#define CMD_TUI_SW_OPEN_SESSION     1
+/* SWd request to NWd to close the TUI session */
+#define CMD_TUI_SW_CLOSE_SESSION    2
+/* SWd request to NWd stop accessing display controller */
+#define CMD_TUI_SW_STOP_DISPLAY     3
+
+
+/**
+ * Maximum data length.
+ */
+#define MAX_DCI_DATA_LEN (1024*100)
+
+/* Command payload */
+struct tui_alloc_data_t {
+	uint32_t alloc_size;
+	uint32_t num_of_buff;
+};
+
+union dci_cmd_payload_t {
+	struct tui_alloc_data_t alloc_data;
+};
+
+/* Command */
+struct dci_command_t {
+	uint32_t id;
+	union dci_cmd_payload_t payload;
+};
+
+/* TUI frame buffer (output from NWd) */
+struct tui_alloc_buffer_t {
+	uint64_t    pa;
+};
+
+#define MAX_DCI_BUFFER_NUMBER 4
+
+/* Response */
+struct dci_response_t {
+	uint32_t	id; /* must be command ID | RSP_ID_MASK */
+	uint32_t		return_code;
+	struct tui_alloc_buffer_t alloc_buffer[MAX_DCI_BUFFER_NUMBER];
+};
+
+/* DCI buffer */
+struct tui_dci_msg_t {
+	uint32_t     nwd_notif; /* Notification from TlcTui to DrTui */
+	struct dci_command_t  cmd_nwd;   /* Command from DrTui to TlcTui */
+	struct dci_response_t nwd_rsp;   /* Response from TlcTui to DrTui */
+};
+
+/**
+ * Driver UUID. Update accordingly after reserving UUID
+ */
+#define DR_TUI_UUID { { 7, 0xC, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }
+
+#endif /* __DCITUI_H__ */

drivers/gud/gud-exynos7870/TlcTui/inc/t-base-tui.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2013-2014 TRUSTONIC LIMITED
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __TBASE_TUI_H__
+#define __TBASE_TUI_H__
+
+#define TRUSTEDUI_MODE_OFF                0x00
+#define TRUSTEDUI_MODE_ALL                0xff
+#define TRUSTEDUI_MODE_TUI_SESSION    0x01
+#define TRUSTEDUI_MODE_VIDEO_SECURED  0x02
+#define TRUSTEDUI_MODE_INPUT_SECURED  0x04
+
+#ifdef CONFIG_TRUSTONIC_TRUSTED_UI
+
+int trustedui_blank_inc(void);
+int trustedui_blank_dec(void);
+int trustedui_blank_get_counter(void);
+void trustedui_blank_set_counter(int counter);
+
+int trustedui_get_current_mode(void);
+void trustedui_set_mode(int mode);
+int trustedui_set_mask(int mask);
+int trustedui_clear_mask(int mask);
+
+#endif /* CONFIG_TRUSTONIC_TRUSTED_UI */
+
+#endif /* __TBASE_TUI_H__ */

drivers/gud/gud-exynos7870/TlcTui/main.c

@@ -0,0 +1,173 @@
+/*
+ * Copyright (c) 2013-2014 TRUSTONIC LIMITED
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/ioctl.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/cdev.h>
+#include <linux/completion.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+
+#include "tui_ioctl.h"
+#include "tlcTui.h"
+#include "mobicore_driver_api.h"
+#include "dciTui.h"
+#include "tui-hal.h"
+#include "build_tag.h"
+
+/*static int tui_dev_major_number = 122; */
+
+/*module_param(tui_dev_major_number, int, 0000); */
+/*MODULE_PARM_DESC(major, */
+/* "The device major number used to register a unique char device driver"); */
+
+/* Static variables */
+static struct cdev tui_cdev;
+
+static long tui_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
+{
+	int ret = -ENOTTY;
+	int __user *uarg = (int __user *)arg;
+
+	if (_IOC_TYPE(cmd) != TUI_IO_MAGIC)
+		return -EINVAL;
+
+	pr_info("t-base-tui module: ioctl 0x%x ", cmd);
+
+	switch (cmd) {
+	case TUI_IO_NOTIFY:
+		pr_info("TUI_IO_NOTIFY\n");
+
+		if (tlc_notify_event(arg))
+			ret = 0;
+		else
+			ret = -EFAULT;
+		break;
+
+	case TUI_IO_WAITCMD: {
+		uint32_t cmd_id;
+
+		pr_info("TUI_IO_WAITCMD\n");
+
+		ret = tlc_wait_cmd(&cmd_id);
+		if (ret)
+			return ret;
+
+		/* Write command id to user */
+		pr_debug("IOCTL: sending command %d to user.\n", cmd_id);
+
+		if (copy_to_user(uarg, &cmd_id, sizeof(cmd_id)))
+			ret = -EFAULT;
+		else
+			ret = 0;
+
+		/* Reset the value of the command, to ensure that commands sent
+		 * due to interrupted wait_for_completion are TLC_TUI_CMD_NONE.
+		 */
+		reset_global_command_id();
+
+		break;
+	}
+
+	case TUI_IO_ACK: {
+		struct tlc_tui_response_t rsp_id;
+
+		pr_info("TUI_IO_ACK\n");
+
+		/* Read user response */
+		if (copy_from_user(&rsp_id, uarg, sizeof(rsp_id)))
+			ret = -EFAULT;
+		else
+			ret = 0;
+
+		pr_debug("IOCTL: User completed command %d.\n", rsp_id.id);
+		ret = tlc_ack_cmd(&rsp_id);
+		if (ret)
+			return ret;
+		break;
+	}
+
+	default:
+		pr_info("undefined!\n");
+		return -ENOTTY;
+	}
+
+	return ret;
+}
+
+static const struct file_operations tui_fops = {
+	.owner = THIS_MODULE,
+	.unlocked_ioctl = tui_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = tui_ioctl,
+#endif
+};
+
+/*--------------------------------------------------------------------------- */
+static int __init tlc_tui_init(void)
+{
+	pr_info("Loading t-base-tui module.\n");
+	pr_debug("\n=============== Running TUI Kernel TLC ===============\n");
+	pr_info("%s\n", MOBICORE_COMPONENT_BUILD_TAG);
+
+	dev_t devno;
+	int err;
+	static struct class *tui_class;
+
+	err = alloc_chrdev_region(&devno, 0, 1, TUI_DEV_NAME);
+	if (err) {
+		pr_debug(KERN_ERR "Unable to allocate Trusted UI device number\n");
+		return err;
+	}
+
+	cdev_init(&tui_cdev, &tui_fops);
+	tui_cdev.owner = THIS_MODULE;
+	/*    tui_cdev.ops = &tui_fops; */
+
+	err = cdev_add(&tui_cdev, devno, 1);
+	if (err) {
+		pr_debug(KERN_ERR "Unable to add Trusted UI char device\n");
+		unregister_chrdev_region(devno, 1);
+		return err;
+	}
+
+	tui_class = class_create(THIS_MODULE, "tui_cls");
+	device_create(tui_class, NULL, devno, NULL, TUI_DEV_NAME);
+
+	if (!hal_tui_init())
+		return -EPERM;
+
+	return 0;
+}
+
+static void __exit tlc_tui_exit(void)
+{
+	pr_info("Unloading t-base-tui module.\n");
+
+	unregister_chrdev_region(tui_cdev.dev, 1);
+	cdev_del(&tui_cdev);
+
+	hal_tui_exit();
+}
+
+module_init(tlc_tui_init);
+module_exit(tlc_tui_exit);
+
+MODULE_AUTHOR("Trustonic Limited");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("<t-base TUI");

drivers/gud/gud-exynos7870/TlcTui/platforms/EXYNOS_5250_ARNDALE_KBOARD/tui-hal.c

@@ -0,0 +1,295 @@
+/*
+ * Copyright (c) 2014-2015 TRUSTONIC LIMITED
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/version.h>
+#include <linux/clk.h>
+#include <linux/console.h>
+#include <linux/fb.h>
+#include <video/s3c-fb.h>
+#include <t-base-tui.h>
+
+#include "tui_ioctl.h"
+#include "dciTui.h"
+#include "tlcTui.h"
+#include "tui-hal.h"
+
+
+#define TUI_MEMPOOL_SIZE 0
+
+struct tui_mempool {
+	void *va;
+	unsigned long pa;
+	size_t size;
+};
+
+static struct tui_mempool g_tui_mem_pool;
+
+static bool allocate_tui_memory_pool(struct tui_mempool *pool, size_t size)
+{
+	bool ret = false;
+	void *tui_mem_pool = NULL;
+
+	pr_info("%s %s:%d\n", __func__, __FILE__, __LINE__);
+	if (!size) {
+		pr_debug("TUI frame buffer: nothing to allocate.");
+		return true;
+	}
+
+	tui_mem_pool = kmalloc(size, GFP_KERNEL);
+	if (!tui_mem_pool) {
+		pr_debug("ERROR Could not allocate TUI memory pool");
+	} else if (ksize(tui_mem_pool) < size) {
+		pr_err("TUI mem pool size too small: req'd=%d alloc'd=%d", size,
+		       ksize(tui_mem_pool));
+		kfree(tui_mem_pool);
+	} else {
+		pool->va = tui_mem_pool;
+		pool->pa = virt_to_phys(tui_mem_pool);
+		pool->size = ksize(tui_mem_pool);
+		ret = true;
+	}
+	return ret;
+}
+
+static void free_tui_memory_pool(struct tui_mempool *pool)
+{
+	kfree(pool->va);
+	memset(pool, 0, sizeof(*pool));
+}
+
+static int is_device_ok(struct device *fbdev, void *p)
+{
+	return 1;
+}
+
+static struct device *get_fb_dev(void)
+{
+	struct device *fbdev = NULL;
+
+	/* get the first framebuffer device */
+	/* [TODO] Handle properly when there are more than one framebuffer */
+	fbdev = class_find_device(fb_class, NULL, NULL, is_device_ok);
+	if (NULL == fbdev) {
+		pr_debug("ERROR cannot get framebuffer device\n");
+		return NULL;
+	}
+	return fbdev;
+}
+
+static struct fb_info *get_fb_info(struct device *fbdev)
+{
+	struct fb_info *fb_info;
+
+	if (!fbdev->p) {
+		pr_debug("ERROR framebuffer device has no private data\n");
+		return NULL;
+	}
+
+	fb_info = (struct fb_info *)dev_get_drvdata(fbdev);
+	if (!fb_info) {
+		pr_debug("ERROR framebuffer device has no fb_info\n");
+		return NULL;
+	}
+
+	return fb_info;
+}
+
+static void blank_framebuffer(int getref)
+{
+	struct device *fbdev = NULL;
+	struct fb_info *fb_info;
+	struct s3c_fb_win *win;
+	struct s3c_fb *sfb;
+
+	fbdev = get_fb_dev();
+	if (!fbdev)
+		return;
+
+	fb_info = get_fb_info(fbdev);
+	if (!fb_info)
+		return;
+
+	/*
+	 * hold a reference to the dsim device, to prevent it from going into
+	 * power management during tui session
+	 */
+	win = fb_info->par;
+	sfb = win->parent;
+
+	if (getref)
+		pm_runtime_get_sync(sfb->dev);
+
+	/* blank the framebuffer */
+	lock_fb_info(fb_info);
+	console_lock();
+	fb_info->flags |= FBINFO_MISC_USEREVENT;
+	pr_info("%s call fb_blank\n", __func__);
+	fb_blank(fb_info, FB_BLANK_POWERDOWN);
+	fb_info->flags &= ~FBINFO_MISC_USEREVENT;
+	console_unlock();
+	unlock_fb_info(fb_info);
+	pr_info("%s call s3c_fb_deactivate_vsync\n", __func__);
+	s3c_fb_deactivate_vsync(sfb);
+}
+
+static void unblank_framebuffer(int releaseref)
+{
+	struct device *fbdev = NULL;
+	struct fb_info *fb_info;
+	struct s3c_fb_win *win;
+	struct s3c_fb *sfb;
+
+	fbdev = get_fb_dev();
+	if (!fbdev)
+		return;
+
+	fb_info = get_fb_info(fbdev);
+	if (!fb_info)
+		return;
+
+	/*
+	 * Release the reference we took at the beginning of the TUI session
+	 */
+	win = fb_info->par;
+	sfb = win->parent;
+
+	pr_info("%s call s3c_fb_activate_vsync\n", __func__);
+	s3c_fb_activate_vsync(sfb);
+
+	/*
+	 * Unblank the framebuffer
+	 */
+	console_lock();
+	fb_info->flags |= FBINFO_MISC_USEREVENT;
+	fb_blank(fb_info, FB_BLANK_UNBLANK);
+	fb_info->flags &= ~FBINFO_MISC_USEREVENT;
+	console_unlock();
+
+	if (releaseref)
+		pm_runtime_put_sync(sfb->dev);
+}
+
+uint32_t hal_tui_init(void)
+{
+	/* Allocate memory pool for the framebuffer
+	 */
+	if (!allocate_tui_memory_pool(&g_tui_mem_pool, TUI_MEMPOOL_SIZE))
+		return TUI_DCI_ERR_INTERNAL_ERROR;
+
+	return TUI_DCI_OK;
+}
+
+void hal_tui_exit(void)
+{
+	/* delete memory pool if any */
+	if (g_tui_mem_pool.va)
+		free_tui_memory_pool(&g_tui_mem_pool);
+}
+
+uint32_t hal_tui_alloc(
+	struct tui_alloc_buffer_t allocbuffer[MAX_DCI_BUFFER_NUMBER],
+	size_t allocsize, uint32_t number)
+{
+	uint32_t ret = TUI_DCI_ERR_INTERNAL_ERROR;
+
+	if (!allocbuffer) {
+		pr_debug("%s(%d): allocbuffer is null\n", __func__, __LINE__);
+		return TUI_DCI_ERR_INTERNAL_ERROR;
+	}
+
+	pr_debug("%s(%d): Requested size=0x%x x %u chunks\n", __func__,
+		 __LINE__, allocsize, number);
+
+	if ((size_t)allocsize == 0) {
+		pr_debug("%s(%d): Nothing to allocate\n", __func__, __LINE__);
+		return TUI_DCI_OK;
+	}
+
+	if (number != 3) {
+		pr_debug("%s(%d): Unexpected number of buffers requested\n",
+			 __func__, __LINE__);
+		return TUI_DCI_ERR_INTERNAL_ERROR;
+	}
+
+	if ((size_t)(allocsize*number) <= g_tui_mem_pool.size) {
+		/* requested buffer fits in the memory pool */
+		unsigned int i;
+		for (i = 0; i < number; i++) {
+			pr_info("%s(%d): allocbuffer + %d = 0x%p\n", __func__,
+				__LINE__, i, allocbuffer+i);
+			allocbuffer[i].pa =
+				(uint64_t) (g_tui_mem_pool.pa + i * allocsize);
+			pr_info("%s(%d): allocated at %llx\n", __func__,
+				__LINE__, allocbuffer[i].pa);
+		}
+		ret = TUI_DCI_OK;
+	} else {
+		/* requested buffer is bigger than the memory pool, return an
+		   error */
+		pr_debug("%s(%d): Memory pool too small\n", __func__, __LINE__);
+		ret = TUI_DCI_ERR_INTERNAL_ERROR;
+	}
+
+	return ret;
+}
+
+void hal_tui_free(void)
+{
+}
+
+uint32_t hal_tui_deactivate(void)
+{
+	/* Set linux TUI flag */
+	trustedui_set_mask(TRUSTEDUI_MODE_TUI_SESSION);
+	trustedui_blank_set_counter(0);
+#ifdef CONFIG_TRUSTONIC_TRUSTED_UI_FB_BLANK
+	blank_framebuffer(1);
+	/* TODO-[2014-03-19]-julare01: disabled for Arndale board but this
+	 * should be re enabled and put into a HAL */
+/*		disable_irq(gpio_to_irq(190)); */
+#endif
+	trustedui_set_mask(TRUSTEDUI_MODE_VIDEO_SECURED|
+			   TRUSTEDUI_MODE_INPUT_SECURED);
+
+	return TUI_DCI_OK;
+}
+
+uint32_t hal_tui_activate(void)
+{
+	/* Protect NWd */
+	trustedui_clear_mask(TRUSTEDUI_MODE_VIDEO_SECURED|
+			     TRUSTEDUI_MODE_INPUT_SECURED);
+
+#ifdef CONFIG_TRUSTONIC_TRUSTED_UI_FB_BLANK
+	pr_info("Unblanking\n");
+	/* TODO-[2014-03-19]-julare01: disabled for Arndale board but this
+	 * should be re enabled and put into a HAL */
+/*		enable_irq(gpio_to_irq(190));*/
+	unblank_framebuffer(1);
+#endif
+
+	/* Clear linux TUI flag */
+	trustedui_set_mode(TRUSTEDUI_MODE_OFF);
+
+#ifdef CONFIG_TRUSTONIC_TRUSTED_UI_FB_BLANK
+	pr_info("Unsetting TUI flag (blank counter=%d)",
+		trustedui_blank_get_counter());
+	if (0 < trustedui_blank_get_counter())
+		blank_framebuffer(0);
+#endif
+
+	return TUI_DCI_OK;
+}
+

drivers/gud/gud-exynos7870/TlcTui/public/tui_ioctl.h

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2013-2014 TRUSTONIC LIMITED
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef TUI_IOCTL_H_
+#define TUI_IOCTL_H_
+
+
+
+/* Response header */
+struct tlc_tui_response_t {
+	uint32_t	id;
+	uint32_t	return_code;
+};
+
+/* Command IDs */
+#define TLC_TUI_CMD_NONE                0
+#define TLC_TUI_CMD_START_ACTIVITY      1
+#define TLC_TUI_CMD_STOP_ACTIVITY       2
+
+/* Return codes */
+#define TLC_TUI_OK                  0
+#define TLC_TUI_ERROR               1
+#define TLC_TUI_ERR_UNKNOWN_CMD     2
+
+
+/*
+ * defines for the ioctl TUI driver module function call from user space.
+ */
+#define TUI_DEV_NAME		"t-base-tui"
+
+#define TUI_IO_MAGIC		't'
+
+#define TUI_IO_NOTIFY	_IOW(TUI_IO_MAGIC, 1, uint32_t)
+#define TUI_IO_WAITCMD	_IOR(TUI_IO_MAGIC, 2, uint32_t)
+#define TUI_IO_ACK	_IOW(TUI_IO_MAGIC, 3, struct tlc_tui_response_t)
+
+#ifdef INIT_COMPLETION
+#define reinit_completion(x) INIT_COMPLETION(*(x))
+#endif
+
+#endif /* TUI_IOCTL_H_ */

drivers/gud/gud-exynos7870/TlcTui/tlcTui.c

@@ -0,0 +1,379 @@
+/*
+ * Copyright (c) 2013-2014 TRUSTONIC LIMITED
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+
+#include "mobicore_driver_api.h"
+#include "tui_ioctl.h"
+#include "tlcTui.h"
+#include "dciTui.h"
+#include "tui-hal.h"
+
+
+/* ------------------------------------------------------------- */
+/* Globals */
+struct tui_dci_msg_t *dci;
+DECLARE_COMPLETION(dci_comp);
+DECLARE_COMPLETION(io_comp);
+
+/* ------------------------------------------------------------- */
+/* Static */
+static const uint32_t DEVICE_ID = MC_DEVICE_ID_DEFAULT;
+static struct task_struct *thread_id;
+static uint32_t g_cmd_id = TLC_TUI_CMD_NONE;
+static struct mc_session_handle dr_session_handle = {0, 0};
+static struct tlc_tui_response_t g_user_rsp = {
+	TLC_TUI_CMD_NONE, TLC_TUI_ERR_UNKNOWN_CMD};
+/* Functions */
+
+/* ------------------------------------------------------------- */
+static bool tlc_open_driver(void)
+{
+	bool ret = false;
+	enum mc_result mc_ret;
+	struct mc_uuid_t dr_uuid = DR_TUI_UUID;
+
+	/* Allocate WSM buffer for the DCI */
+	mc_ret = mc_malloc_wsm(DEVICE_ID, 0, sizeof(struct tui_dci_msg_t),
+			(uint8_t **)&dci, 0);
+	if (MC_DRV_OK != mc_ret) {
+		pr_debug("ERROR %s: Allocation of DCI WSM failed: %d\n",
+			 __func__, mc_ret);
+		return false;
+	}
+
+	/* Clear the session handle */
+	memset(&dr_session_handle, 0, sizeof(dr_session_handle));
+	/* The device ID (default device is used */
+	dr_session_handle.device_id = DEVICE_ID;
+	/* Open session with the Driver */
+	mc_ret = mc_open_session(&dr_session_handle, &dr_uuid, (uint8_t *)dci,
+			(uint32_t)sizeof(struct tui_dci_msg_t));
+	if (MC_DRV_OK != mc_ret) {
+		pr_debug("ERROR %s: Open driver session failed: %d\n",
+			 __func__, mc_ret);
+		ret = false;
+	} else {
+		ret = true;
+	}
+
+	return ret;
+}
+
+
+/* ------------------------------------------------------------- */
+static bool tlc_open(void)
+{
+	bool ret = false;
+	enum mc_result mc_ret;
+
+	/* Open the tbase device */
+	pr_debug("%s: Opening tbase device\n", __func__);
+	mc_ret = mc_open_device(DEVICE_ID);
+
+	/* In case the device is already open, mc_open_device will return an
+	 * error (MC_DRV_ERR_INVALID_OPERATION).  But in this case, we can
+	 * continue, even though mc_open_device returned an error.  Stop in all
+	 * other case of error
+	 */
+	if (MC_DRV_OK != mc_ret && MC_DRV_ERR_INVALID_OPERATION != mc_ret) {
+		pr_debug("ERROR %s: Error %d opening device\n", __func__,
+			 mc_ret);
+		return false;
+	}
+
+	pr_debug("%s: Opening driver session\n", __func__);
+	ret = tlc_open_driver();
+
+	return ret;
+}
+
+
+/* ------------------------------------------------------------- */
+static void tlc_wait_cmd_from_driver(void)
+{
+	uint32_t ret = TUI_DCI_ERR_INTERNAL_ERROR;
+
+	/* Wait for a command from secure driver */
+	ret = mc_wait_notification(&dr_session_handle, -1);
+	if (MC_DRV_OK == ret)
+		pr_debug("tlc_wait_cmd_from_driver: Got a command\n");
+	else
+		pr_debug("ERROR %s: mc_wait_notification() failed: %d\n",
+			 __func__, ret);
+}
+
+
+static uint32_t send_cmd_to_user(uint32_t command_id)
+{
+	uint32_t ret = TUI_DCI_ERR_NO_RESPONSE;
+
+	/* Init shared variables */
+	g_cmd_id = command_id;
+	g_user_rsp.id = TLC_TUI_CMD_NONE;
+	g_user_rsp.return_code = TLC_TUI_ERR_UNKNOWN_CMD;
+
+	/* Give way to ioctl thread */
+	complete(&dci_comp);
+	pr_debug("send_cmd_to_user: give way to ioctl thread\n");
+
+	/* Wait for ioctl thread to complete */
+	wait_for_completion(&io_comp);
+	pr_debug("send_cmd_to_user: Got an answer from ioctl thread.\n");
+	reinit_completion(&io_comp);
+
+	/* Check id of the cmd processed by ioctl thread (paranoia) */
+	if (g_user_rsp.id != command_id) {
+		pr_debug("ERROR %s: Wrong response id 0x%08x iso 0x%08x\n",
+			 __func__, dci->nwd_rsp.id, RSP_ID(command_id));
+		ret = TUI_DCI_ERR_INTERNAL_ERROR;
+	} else {
+		/* retrieve return code */
+		switch (g_user_rsp.return_code) {
+		case TLC_TUI_OK:
+			ret = TUI_DCI_OK;
+			break;
+		case TLC_TUI_ERROR:
+			ret = TUI_DCI_ERR_INTERNAL_ERROR;
+			break;
+		case TLC_TUI_ERR_UNKNOWN_CMD:
+			ret = TUI_DCI_ERR_UNKNOWN_CMD;
+			break;
+		}
+	}
+
+	return ret;
+}
+
+/* ------------------------------------------------------------- */
+static void tlc_process_cmd(void)
+{
+	uint32_t ret = TUI_DCI_ERR_INTERNAL_ERROR;
+	uint32_t command_id = CMD_TUI_SW_NONE;
+
+	if  (NULL == dci) {
+		pr_debug("ERROR %s: DCI has not been set up properly - exiting\n",
+			 __func__);
+		return;
+	} else {
+		command_id = dci->cmd_nwd.id;
+	}
+
+	/* Warn if previous response was not acknowledged */
+	if (CMD_TUI_SW_NONE == command_id) {
+		pr_debug("ERROR %s: Notified without command\n", __func__);
+		return;
+	} else {
+		if (dci->nwd_rsp.id != CMD_TUI_SW_NONE)
+			pr_debug("%s: Warning, previous response not ack\n",
+				 __func__);
+	}
+
+	/* Handle command */
+	switch (command_id) {
+	case CMD_TUI_SW_OPEN_SESSION:
+		pr_debug("%s: CMD_TUI_SW_OPEN_SESSION.\n", __func__);
+
+		/* Start android TUI activity */
+		ret = send_cmd_to_user(TLC_TUI_CMD_START_ACTIVITY);
+		if (TUI_DCI_OK != ret)
+			break;
+
+		/* allocate TUI frame buffer */
+		ret = hal_tui_alloc(dci->nwd_rsp.alloc_buffer,
+				dci->cmd_nwd.payload.alloc_data.alloc_size,
+				dci->cmd_nwd.payload.alloc_data.num_of_buff);
+
+		if (TUI_DCI_OK != ret)
+			break;
+
+		/* Deactivate linux UI drivers */
+		ret = hal_tui_deactivate();
+
+		if (TUI_DCI_OK != ret) {
+			hal_tui_free();
+			send_cmd_to_user(TLC_TUI_CMD_STOP_ACTIVITY);
+			break;
+		}
+
+		break;
+
+	case CMD_TUI_SW_CLOSE_SESSION:
+		pr_debug("%s: CMD_TUI_SW_CLOSE_SESSION.\n", __func__);
+
+		/* Activate linux UI drivers */
+		ret = hal_tui_activate();
+
+		hal_tui_free();
+
+		/* Stop android TUI activity */
+		ret = send_cmd_to_user(TLC_TUI_CMD_STOP_ACTIVITY);
+		break;
+
+	default:
+		pr_debug("ERROR %s: Unknown command %d\n",
+			 __func__, command_id);
+		break;
+	}
+
+	/* Fill in response to SWd, fill ID LAST */
+	pr_debug("%s: return 0x%08x to cmd 0x%08x\n",
+		 __func__, ret, command_id);
+	dci->nwd_rsp.return_code = ret;
+	dci->nwd_rsp.id = RSP_ID(command_id);
+
+	/* Acknowledge command */
+	dci->cmd_nwd.id = CMD_TUI_SW_NONE;
+
+	/* Notify SWd */
+	pr_debug("DCI RSP NOTIFY CORE\n");
+	ret = mc_notify(&dr_session_handle);
+	if (MC_DRV_OK != ret)
+		pr_debug("ERROR %s: Notify failed: %d\n", __func__, ret);
+}
+
+
+/* ------------------------------------------------------------- */
+static void tlc_close_driver(void)
+{
+	enum mc_result ret;
+
+	/* Close session with the Driver */
+	ret = mc_close_session(&dr_session_handle);
+	if (MC_DRV_OK != ret) {
+		pr_debug("ERROR %s: Closing driver session failed: %d\n",
+			 __func__, ret);
+	}
+}
+
+
+/* ------------------------------------------------------------- */
+static void tlc_close(void)
+{
+	enum mc_result ret;
+
+	pr_debug("%s: Closing driver session\n", __func__);
+	tlc_close_driver();
+
+	pr_debug("%s: Closing tbase\n", __func__);
+	/* Close the tbase device */
+	ret = mc_close_device(DEVICE_ID);
+	if (MC_DRV_OK != ret) {
+		pr_debug("ERROR %s: Closing tbase device failed: %d\n",
+			 __func__, ret);
+	}
+}
+
+void reset_global_command_id(void)
+{
+	g_cmd_id = TLC_TUI_CMD_NONE;
+}
+
+/* ------------------------------------------------------------- */
+bool tlc_notify_event(uint32_t event_type)
+{
+	bool ret = false;
+	enum mc_result result;
+
+	if (NULL == dci) {
+		pr_debug("ERROR tlc_notify_event: DCI has not been set up properly - exiting\n");
+		return false;
+	}
+
+	/* Prepare notification message in DCI */
+	pr_debug("tlc_notify_event: event_type = %d\n", event_type);
+	dci->nwd_notif = event_type;
+
+	/* Signal the Driver */
+	pr_debug("DCI EVENT NOTIFY CORE\n");
+	result = mc_notify(&dr_session_handle);
+	if (MC_DRV_OK != result) {
+		pr_debug("ERROR tlc_notify_event: mc_notify failed: %d\n",
+			 result);
+		ret = false;
+	} else {
+		ret = true;
+	}
+
+	return ret;
+}
+
+/* ------------------------------------------------------------- */
+/**
+ */
+int main_thread(void *uarg)
+{
+	pr_debug("main_thread: TlcTui start!\n");
+
+	/* Open session on the driver */
+	if (!tlc_open()) {
+		pr_debug("ERROR main_thread: open driver failed!\n");
+		return 1;
+	}
+
+	/* TlcTui main thread loop */
+	for (;;) {
+		/* Wait for a command from the DrTui on DCI*/
+		tlc_wait_cmd_from_driver();
+		/* Something has been received, process it. */
+		tlc_process_cmd();
+	}
+
+	/* Close tlc. Note that this frees the DCI pointer.
+	 * Do not use this pointer after tlc_close().*/
+	tlc_close();
+
+	return 0;
+}
+
+int tlc_wait_cmd(uint32_t *cmd_id)
+{
+	/* Create the TlcTui Main thread and start secure driver (only
+	   1st time) */
+	if (dr_session_handle.session_id == 0) {
+		thread_id = kthread_run(main_thread, NULL, "dci_thread");
+		if (!thread_id) {
+			pr_debug(KERN_ERR "Unable to start Trusted UI main thread\n");
+			return -EFAULT;
+		}
+	}
+
+	/* Wait for signal from DCI handler */
+	/* In case of an interrupted sys call, return with -EINTR */
+	if (wait_for_completion_interruptible(&dci_comp)) {
+		pr_debug("interrupted by system\n");
+		return -ERESTARTSYS;
+	}
+	reinit_completion(&dci_comp);
+
+	*cmd_id = g_cmd_id;
+	return 0;
+}
+
+int tlc_ack_cmd(struct tlc_tui_response_t *rsp_id)
+{
+	g_user_rsp = *rsp_id;
+
+	/* Send signal to DCI */
+	complete(&io_comp);
+
+	return 0;
+}
+
+/** @} */

drivers/gud/gud-exynos7870/TlcTui/tlcTui.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2013-2014 TRUSTONIC LIMITED
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef TLCTUI_H_
+#define TLCTUI_H_
+
+void reset_global_command_id(void);
+int tlc_wait_cmd(uint32_t *cmd_id);
+int tlc_ack_cmd(struct tlc_tui_response_t *rsp_id);
+bool tlc_notify_event(uint32_t event_type);
+
+#endif /* TLCTUI_H_ */

drivers/gud/gud-exynos7870/TlcTui/trustedui.c

@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2013 TRUSTONIC LIMITED
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+/**
+ * File            : trustedui.c
+ * Created         : 26-02-2010
+ */
+
+#include <linux/spinlock.h>
+#include <linux/module.h>
+#include <linux/t-base-tui.h>
+
+static int trustedui_mode = TRUSTEDUI_MODE_OFF;
+static int trustedui_blank_counter;
+
+static DEFINE_SPINLOCK(trustedui_lock);
+
+int trustedui_blank_inc(void)
+{
+	unsigned long flags;
+	int newvalue;
+
+	spin_lock_irqsave(&trustedui_lock, flags);
+	newvalue = ++trustedui_blank_counter;
+	spin_unlock_irqrestore(&trustedui_lock, flags);
+
+	return newvalue;
+}
+EXPORT_SYMBOL(trustedui_blank_inc);
+
+int trustedui_blank_dec(void)
+{
+	unsigned long flags;
+	int newvalue;
+
+	spin_lock_irqsave(&trustedui_lock, flags);
+	newvalue = --trustedui_blank_counter;
+	spin_unlock_irqrestore(&trustedui_lock, flags);
+
+	return newvalue;
+}
+EXPORT_SYMBOL(trustedui_blank_dec);
+
+int trustedui_blank_get_counter(void)
+{
+	unsigned long flags;
+	int newvalue;
+
+	spin_lock_irqsave(&trustedui_lock, flags);
+	newvalue = trustedui_blank_counter;
+	spin_unlock_irqrestore(&trustedui_lock, flags);
+
+	return newvalue;
+}
+EXPORT_SYMBOL(trustedui_blank_get_counter);
+
+void trustedui_blank_set_counter(int counter)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&trustedui_lock, flags);
+	trustedui_blank_counter = counter;
+	spin_unlock_irqrestore(&trustedui_lock, flags);
+}
+EXPORT_SYMBOL(trustedui_blank_set_counter);
+
+int trustedui_get_current_mode(void)
+{
+	unsigned long flags;
+	int mode;
+
+	spin_lock_irqsave(&trustedui_lock, flags);
+	mode = trustedui_mode;
+	spin_unlock_irqrestore(&trustedui_lock, flags);
+
+	return mode;
+}
+EXPORT_SYMBOL(trustedui_get_current_mode);
+
+void trustedui_set_mode(int mode)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&trustedui_lock, flags);
+	trustedui_mode = mode;
+	spin_unlock_irqrestore(&trustedui_lock, flags);
+}
+EXPORT_SYMBOL(trustedui_set_mode);
+
+
+int trustedui_set_mask(int mask)
+{
+	unsigned long flags;
+	int mode;
+
+	spin_lock_irqsave(&trustedui_lock, flags);
+	mode = trustedui_mode |= mask;
+	spin_unlock_irqrestore(&trustedui_lock, flags);
+
+	return mode;
+}
+EXPORT_SYMBOL(trustedui_set_mask);
+
+int trustedui_clear_mask(int mask)
+{
+	unsigned long flags;
+	int mode;
+
+	spin_lock_irqsave(&trustedui_lock, flags);
+	mode = trustedui_mode &= ~mask;
+	spin_unlock_irqrestore(&trustedui_lock, flags);
+
+	return mode;
+}
+EXPORT_SYMBOL(trustedui_clear_mask);
+
+MODULE_AUTHOR("Trustonic Limited");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("<t-base TUI");

drivers/gud/gud-exynos7870/TlcTui/tui-hal.c

@@ -0,0 +1,295 @@
+/*
+ * Copyright (c) 2014-2015 TRUSTONIC LIMITED
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/version.h>
+#include <linux/clk.h>
+#include <linux/console.h>
+#include <linux/fb.h>
+#include <video/s3c-fb.h>
+#include <t-base-tui.h>
+
+#include "tui_ioctl.h"
+#include "dciTui.h"
+#include "tlcTui.h"
+#include "tui-hal.h"
+
+
+#define TUI_MEMPOOL_SIZE 0
+
+struct tui_mempool {
+	void *va;
+	unsigned long pa;
+	size_t size;
+};
+
+static struct tui_mempool g_tui_mem_pool;
+
+static bool allocate_tui_memory_pool(struct tui_mempool *pool, size_t size)
+{
+	bool ret = false;
+	void *tui_mem_pool = NULL;
+
+	pr_info("%s %s:%d\n", __func__, __FILE__, __LINE__);
+	if (!size) {
+		pr_debug("TUI frame buffer: nothing to allocate.");
+		return true;
+	}
+
+	tui_mem_pool = kmalloc(size, GFP_KERNEL);
+	if (!tui_mem_pool) {
+		pr_debug("ERROR Could not allocate TUI memory pool");
+	} else if (ksize(tui_mem_pool) < size) {
+		pr_err("TUI mem pool size too small: req'd=%d alloc'd=%d", size,
+		       ksize(tui_mem_pool));
+		kfree(tui_mem_pool);
+	} else {
+		pool->va = tui_mem_pool;
+		pool->pa = virt_to_phys(tui_mem_pool);
+		pool->size = ksize(tui_mem_pool);
+		ret = true;
+	}
+	return ret;
+}
+
+static void free_tui_memory_pool(struct tui_mempool *pool)
+{
+	kfree(pool->va);
+	memset(pool, 0, sizeof(*pool));
+}
+
+static int is_device_ok(struct device *fbdev, void *p)
+{
+	return 1;
+}
+
+static struct device *get_fb_dev(void)
+{
+	struct device *fbdev = NULL;
+
+	/* get the first framebuffer device */
+	/* [TODO] Handle properly when there are more than one framebuffer */
+	fbdev = class_find_device(fb_class, NULL, NULL, is_device_ok);
+	if (NULL == fbdev) {
+		pr_debug("ERROR cannot get framebuffer device\n");
+		return NULL;
+	}
+	return fbdev;
+}
+
+static struct fb_info *get_fb_info(struct device *fbdev)
+{
+	struct fb_info *fb_info;
+
+	if (!fbdev->p) {
+		pr_debug("ERROR framebuffer device has no private data\n");
+		return NULL;
+	}
+
+	fb_info = (struct fb_info *)dev_get_drvdata(fbdev);
+	if (!fb_info) {
+		pr_debug("ERROR framebuffer device has no fb_info\n");
+		return NULL;
+	}
+
+	return fb_info;
+}
+
+static void blank_framebuffer(int getref)
+{
+	struct device *fbdev = NULL;
+	struct fb_info *fb_info;
+	struct s3c_fb_win *win;
+	struct s3c_fb *sfb;
+
+	fbdev = get_fb_dev();
+	if (!fbdev)
+		return;
+
+	fb_info = get_fb_info(fbdev);
+	if (!fb_info)
+		return;
+
+	/*
+	 * hold a reference to the dsim device, to prevent it from going into
+	 * power management during tui session
+	 */
+	win = fb_info->par;
+	sfb = win->parent;
+
+	if (getref)
+		pm_runtime_get_sync(sfb->dev);
+
+	/* blank the framebuffer */
+	lock_fb_info(fb_info);
+	console_lock();
+	fb_info->flags |= FBINFO_MISC_USEREVENT;
+	pr_info("%s call fb_blank\n", __func__);
+	fb_blank(fb_info, FB_BLANK_POWERDOWN);
+	fb_info->flags &= ~FBINFO_MISC_USEREVENT;
+	console_unlock();
+	unlock_fb_info(fb_info);
+	pr_info("%s call s3c_fb_deactivate_vsync\n", __func__);
+	s3c_fb_deactivate_vsync(sfb);
+}
+
+static void unblank_framebuffer(int releaseref)
+{
+	struct device *fbdev = NULL;
+	struct fb_info *fb_info;
+	struct s3c_fb_win *win;
+	struct s3c_fb *sfb;
+
+	fbdev = get_fb_dev();
+	if (!fbdev)
+		return;
+
+	fb_info = get_fb_info(fbdev);
+	if (!fb_info)
+		return;
+
+	/*
+	 * Release the reference we took at the beginning of the TUI session
+	 */
+	win = fb_info->par;
+	sfb = win->parent;
+
+	pr_info("%s call s3c_fb_activate_vsync\n", __func__);
+	s3c_fb_activate_vsync(sfb);
+
+	/*
+	 * Unblank the framebuffer
+	 */
+	console_lock();
+	fb_info->flags |= FBINFO_MISC_USEREVENT;
+	fb_blank(fb_info, FB_BLANK_UNBLANK);
+	fb_info->flags &= ~FBINFO_MISC_USEREVENT;
+	console_unlock();
+
+	if (releaseref)
+		pm_runtime_put_sync(sfb->dev);
+}
+
+uint32_t hal_tui_init(void)
+{
+	/* Allocate memory pool for the framebuffer
+	 */
+	if (!allocate_tui_memory_pool(&g_tui_mem_pool, TUI_MEMPOOL_SIZE))
+		return TUI_DCI_ERR_INTERNAL_ERROR;
+
+	return TUI_DCI_OK;
+}
+
+void hal_tui_exit(void)
+{
+	/* delete memory pool if any */
+	if (g_tui_mem_pool.va)
+		free_tui_memory_pool(&g_tui_mem_pool);
+}
+
+uint32_t hal_tui_alloc(
+	struct tui_alloc_buffer_t allocbuffer[MAX_DCI_BUFFER_NUMBER],
+	size_t allocsize, uint32_t number)
+{
+	uint32_t ret = TUI_DCI_ERR_INTERNAL_ERROR;
+
+	if (!allocbuffer) {
+		pr_debug("%s(%d): allocbuffer is null\n", __func__, __LINE__);
+		return TUI_DCI_ERR_INTERNAL_ERROR;
+	}
+
+	pr_debug("%s(%d): Requested size=0x%x x %u chunks\n", __func__,
+		 __LINE__, allocsize, number);
+
+	if ((size_t)allocsize == 0) {
+		pr_debug("%s(%d): Nothing to allocate\n", __func__, __LINE__);
+		return TUI_DCI_OK;
+	}
+
+	if (number != 3) {
+		pr_debug("%s(%d): Unexpected number of buffers requested\n",
+			 __func__, __LINE__);
+		return TUI_DCI_ERR_INTERNAL_ERROR;
+	}
+
+	if ((size_t)(allocsize*number) <= g_tui_mem_pool.size) {
+		/* requested buffer fits in the memory pool */
+		unsigned int i;
+		for (i = 0; i < number; i++) {
+			pr_info("%s(%d): allocbuffer + %d = 0x%p\n", __func__,
+				__LINE__, i, allocbuffer+i);
+			allocbuffer[i].pa =
+				(uint64_t) (g_tui_mem_pool.pa + i * allocsize);
+			pr_info("%s(%d): allocated at %llx\n", __func__,
+				__LINE__, allocbuffer[i].pa);
+		}
+		ret = TUI_DCI_OK;
+	} else {
+		/* requested buffer is bigger than the memory pool, return an
+		   error */
+		pr_debug("%s(%d): Memory pool too small\n", __func__, __LINE__);
+		ret = TUI_DCI_ERR_INTERNAL_ERROR;
+	}
+
+	return ret;
+}
+
+void hal_tui_free(void)
+{
+}
+
+uint32_t hal_tui_deactivate(void)
+{
+	/* Set linux TUI flag */
+	trustedui_set_mask(TRUSTEDUI_MODE_TUI_SESSION);
+	trustedui_blank_set_counter(0);
+#ifdef CONFIG_TRUSTONIC_TRUSTED_UI_FB_BLANK
+	blank_framebuffer(1);
+	/* TODO-[2014-03-19]-julare01: disabled for Arndale board but this
+	 * should be re enabled and put into a HAL */
+/*		disable_irq(gpio_to_irq(190)); */
+#endif
+	trustedui_set_mask(TRUSTEDUI_MODE_VIDEO_SECURED|
+			   TRUSTEDUI_MODE_INPUT_SECURED);
+
+	return TUI_DCI_OK;
+}
+
+uint32_t hal_tui_activate(void)
+{
+	/* Protect NWd */
+	trustedui_clear_mask(TRUSTEDUI_MODE_VIDEO_SECURED|
+			     TRUSTEDUI_MODE_INPUT_SECURED);
+
+#ifdef CONFIG_TRUSTONIC_TRUSTED_UI_FB_BLANK
+	pr_info("Unblanking\n");
+	/* TODO-[2014-03-19]-julare01: disabled for Arndale board but this
+	 * should be re enabled and put into a HAL */
+/*		enable_irq(gpio_to_irq(190));*/
+	unblank_framebuffer(1);
+#endif
+
+	/* Clear linux TUI flag */
+	trustedui_set_mode(TRUSTEDUI_MODE_OFF);
+
+#ifdef CONFIG_TRUSTONIC_TRUSTED_UI_FB_BLANK
+	pr_info("Unsetting TUI flag (blank counter=%d)",
+		trustedui_blank_get_counter());
+	if (0 < trustedui_blank_get_counter())
+		blank_framebuffer(0);
+#endif
+
+	return TUI_DCI_OK;
+}
+

drivers/gud/gud-exynos7870/TlcTui/tui-hal.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2014 TRUSTONIC LIMITED
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _TUI_HAL_H_
+#define _TUI_HAL_H_
+
+#include <linux/types.h>
+
+uint32_t hal_tui_init(void);
+void hal_tui_exit(void);
+uint32_t hal_tui_alloc(
+	struct tui_alloc_buffer_t allocbuffer[MAX_DCI_BUFFER_NUMBER],
+	size_t allocsize, uint32_t number);
+void hal_tui_free(void);
+uint32_t hal_tui_deactivate(void);
+uint32_t hal_tui_activate(void);
+
+#endif