150 lines
3.7 KiB
C
Executable File
150 lines
3.7 KiB
C
Executable File
/* tui/stui_core.c
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*
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* Samsung TUI HW Handler driver.
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*
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* Copyright (C) 2012-2018, Samsung Electronics Co., Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/delay.h>
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#include <linux/highmem.h>
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#include <linux/interrupt.h>
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#include <linux/uaccess.h>
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#include "stui_core.h"
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#include "stui_hal.h"
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#include "stui_ioctl.h"
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#include "stui_inf.h"
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struct wake_lock tui_wakelock;
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#ifdef SAMSUNG_TUI_TEST
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static uint64_t g_fb_pa;
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static void stui_write_signature(void)
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{
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uint32_t *kaddr;
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struct page *page;
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page = pfn_to_page(g_fb_pa >> PAGE_SHIFT);
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kaddr = kmap(page);
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if (kaddr) {
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*kaddr = 0x01020304;
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pr_debug("[STUI] kaddr : %pK %x\n", kaddr, *kaddr);
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kunmap(page);
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} else {
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pr_err("[STUI] kmap failed\n");
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}
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}
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#endif
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long stui_process_cmd(struct device *dev, struct file *f, unsigned int cmd, unsigned long arg)
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{
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uint32_t ret = STUI_RET_OK;
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/* Handle command */
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switch (cmd) {
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case STUI_HW_IOCTL_START_TUI: {
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struct tui_hw_buffer __user *argp = (struct tui_hw_buffer __user *)arg;
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struct tui_hw_buffer buffer;
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pr_debug("[STUI] STUI_HW_IOCTL_START_TUI called\n");
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if (stui_get_mode() & STUI_MODE_ALL) {
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ret = STUI_RET_ERR_INTERNAL_ERROR;
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break;
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}
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/* allocate TUI frame buffer */
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pr_debug("[STUI] Allocating Framebuffer\n");
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memset(&buffer, 0, sizeof(struct tui_hw_buffer));
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if (stui_alloc_video_space(dev, &buffer)) {
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ret = STUI_RET_ERR_INTERNAL_ERROR;
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break;
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}
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#ifdef SAMSUNG_TUI_TEST
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g_fb_pa = buffer.fb_physical;
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stui_write_signature();
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#endif
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if (stui_i2c_protect(true) != 0) {
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pr_err("[STUI] stui_i2c_protect failed\n");
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goto clean_fb_prepare;
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}
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stui_set_mask(STUI_MODE_TOUCH_SEC);
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if (copy_to_user(argp, &buffer, sizeof(struct tui_hw_buffer))) {
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pr_err("[STUI] copy_to_user failed\n");
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goto clean_touch_lock;
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}
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/* Prepare display for TUI / Deactivate linux UI drivers */
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if (!stui_prepare_tui()) {
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stui_set_mask(STUI_MODE_DISPLAY_SEC);
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wake_lock(&tui_wakelock);
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break;
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}
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clean_touch_lock:
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stui_clear_mask(STUI_MODE_TOUCH_SEC);
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stui_i2c_protect(false);
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clean_fb_prepare:
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stui_free_video_space();
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ret = STUI_RET_ERR_INTERNAL_ERROR;
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break;
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}
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case STUI_HW_IOCTL_FINISH_TUI: {
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pr_debug("[STUI] STUI_HW_IOCTL_FINISH_TUI called\n");
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if (stui_get_mode() == STUI_MODE_OFF) {
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ret = STUI_RET_ERR_INTERNAL_ERROR;
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break;
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}
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/* Disable STUI driver / Activate linux UI drivers */
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if (stui_get_mode() & STUI_MODE_DISPLAY_SEC) {
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stui_clear_mask(STUI_MODE_DISPLAY_SEC);
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stui_finish_tui();
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stui_free_video_space();
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wake_unlock(&tui_wakelock);
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}
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if (stui_get_mode() & STUI_MODE_TOUCH_SEC) {
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stui_clear_mask(STUI_MODE_TOUCH_SEC);
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stui_i2c_protect(false);
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}
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stui_set_mode(STUI_MODE_OFF);
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break;
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}
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#ifdef SAMSUNG_TUI_TEST
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case STUI_HW_IOCTL_GET_PHYS_ADDR: {
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uint64_t __user *argp = (uint64_t __user *)arg;
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if (copy_to_user(argp, &g_fb_pa, sizeof(uint64_t))) {
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pr_err("[STUI] copy_to_user failed\n");
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ret = STUI_RET_ERR_INTERNAL_ERROR;
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}
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break;
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}
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#endif
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case STUI_HW_IOCTL_GET_RESOLUTION: {
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struct tui_hw_buffer __user *argp = (struct tui_hw_buffer __user *)arg;
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struct tui_hw_buffer buffer;
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pr_debug("[STUI] TUI_HW_IOCTL_GET_RESOLUTION called\n");
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memset(&buffer, 0, sizeof(struct tui_hw_buffer));
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if (stui_get_resolution(&buffer)) {
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ret = STUI_RET_ERR_INTERNAL_ERROR;
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break;
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}
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if (copy_to_user(argp, &buffer, sizeof(struct tui_hw_buffer)))
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pr_err("[STUI] copy_to_user failed\n");
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break;
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}
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default:
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pr_err("[STUI] stui_process_cmd(ERROR): Unknown command %d\n", cmd);
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break;
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}
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return ret;
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}
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