Staging: add udlfb driver
This adds the udlfb driver, a framebuffer driver for DisplayLink devices. From: Roberto De Ioris <roberto@unbit.it> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Roberto De Ioris
Greg Kroah-Hartman
parent
0f218ee2b7
commit
88e58b1a42
773
drivers/staging/udlfb/udlfb.c
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773
drivers/staging/udlfb/udlfb.c
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@ -0,0 +1,773 @@
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/*****************************************************************************
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* DLFB Kernel Driver *
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* Version 0.2 (udlfb) *
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* (C) 2009 Roberto De Ioris <roberto@unbit.it> *
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* *
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* This file is licensed under the GPLv2. See COPYING in the package. *
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* Based on the amazing work of Florian Echtler and libdlo 0.1 *
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* *
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* *
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* 31.05.09 release 0.2 *
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* 22.05.09 First public (ugly) release *
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*****************************************************************************/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/usb.h>
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#include <linux/uaccess.h>
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#include <linux/mm.h>
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#include <linux/fb.h>
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#include <linux/mutex.h>
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#include "udlfb.h"
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#define DRIVER_VERSION "DLFB 0.2"
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// memory functions taken from vfb
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static void *rvmalloc(unsigned long size)
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{
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void *mem;
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unsigned long adr;
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size = PAGE_ALIGN(size);
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mem = vmalloc_32(size);
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if (!mem)
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return NULL;
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memset(mem, 0, size); /* Clear the ram out, no junk to the user */
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adr = (unsigned long)mem;
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while (size > 0) {
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SetPageReserved(vmalloc_to_page((void *)adr));
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adr += PAGE_SIZE;
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size -= PAGE_SIZE;
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}
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return mem;
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}
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static void rvfree(void *mem, unsigned long size)
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{
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unsigned long adr;
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if (!mem)
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return;
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adr = (unsigned long)mem;
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while ((long)size > 0) {
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ClearPageReserved(vmalloc_to_page((void *)adr));
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adr += PAGE_SIZE;
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size -= PAGE_SIZE;
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}
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vfree(mem);
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}
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static int dlfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
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{
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unsigned long start = vma->vm_start;
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unsigned long size = vma->vm_end - vma->vm_start;
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unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
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unsigned long page, pos;
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printk("MMAP: %lu %u\n", offset + size, info->fix.smem_len);
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if (offset + size > info->fix.smem_len) {
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return -EINVAL;
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}
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pos = (unsigned long)info->fix.smem_start + offset;
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while (size > 0) {
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page = vmalloc_to_pfn((void *)pos);
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if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
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return -EAGAIN;
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}
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start += PAGE_SIZE;
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pos += PAGE_SIZE;
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if (size > PAGE_SIZE)
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size -= PAGE_SIZE;
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else
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size = 0;
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}
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vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
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return 0;
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}
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//
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//ioctl structure
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struct dloarea {
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int x, y;
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int w, h;
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};
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/*
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static struct usb_device_id id_table [] = {
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{ USB_DEVICE(0x17e9, 0x023d) },
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{ }
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};
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*/
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static struct usb_device_id id_table[] = {
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{.idVendor = 0x17e9,.match_flags = USB_DEVICE_ID_MATCH_VENDOR,},
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{},
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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static struct usb_driver dlfb_driver;
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static int
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image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height,
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char *data)
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{
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int i, j, base;
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int rem = width;
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int ret;
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int diff;
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char *bufptr;
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if (x + width > dev_info->info->var.xres) {
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return -EINVAL;
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}
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if (y + height > dev_info->info->var.yres) {
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return -EINVAL;
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}
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mutex_lock(&dev_info->bulk_mutex);
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base = dev_info->base16 + (dev_info->info->var.xres * 2 * y) + (x * 2);
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data += (dev_info->info->var.xres * 2 * y) + (x * 2);
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//printk("IMAGE_BLIT\n");
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bufptr = dev_info->buf;
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for (i = y; i < y + height; i++) {
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if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) {
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ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
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bufptr = dev_info->buf;
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}
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rem = width;
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//printk("WRITING LINE %d\n", i);
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while (rem) {
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if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) {
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ret =
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dlfb_bulk_msg(dev_info,
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bufptr - dev_info->buf);
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bufptr = dev_info->buf;
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}
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if (rem > 255) {
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diff = 0;
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for (j = 0; j < 510; j++) {
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if (dev_info->
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backing_buffer[base + j] !=
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data[j]) {
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diff = 1;
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break;
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}
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}
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if (diff == 1) {
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*bufptr++ = 0xAF;
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*bufptr++ = 0x68;
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*bufptr++ = (char)(base >> 16);
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*bufptr++ = (char)(base >> 8);
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*bufptr++ = (char)(base);
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*bufptr++ = 255;
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// PUT COMPRESSION HERE
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for (j = 0; j < 510; j += 2) {
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bufptr[j] = data[j + 1];
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bufptr[j + 1] = data[j];
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}
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bufptr += 510;
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}
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rem -= 255;
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base += 510;
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data += 510;
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} else {
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diff = 0;
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for (j = 0; j < rem * 2; j++) {
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if (dev_info->
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backing_buffer[base + j] !=
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data[j]) {
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diff = 1;
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break;
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}
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}
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if (diff == 1) {
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*bufptr++ = 0xAF;
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*bufptr++ = 0x68;
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*bufptr++ = (char)(base >> 16);
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*bufptr++ = (char)(base >> 8);
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*bufptr++ = (char)(base);
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*bufptr++ = rem;
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// PUT COMPRESSION HERE
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for (j = 0; j < rem * 2; j += 2) {
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bufptr[j] = data[j + 1];
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bufptr[j + 1] = data[j];
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}
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bufptr += rem * 2;
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}
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base += rem * 2;
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data += rem * 2;
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rem = 0;
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}
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}
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memcpy(dev_info->backing_buffer + base - (width * 2),
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data - (width * 2), width * 2);
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base += (dev_info->info->var.xres * 2) - (width * 2);
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data += (dev_info->info->var.xres * 2) - (width * 2);
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}
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if (bufptr > dev_info->buf) {
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ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
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}
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mutex_unlock(&dev_info->bulk_mutex);
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return base;
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}
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static int
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draw_rect(struct dlfb_data *dev_info, int x, int y, int width, int height,
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unsigned char red, unsigned char green, unsigned char blue)
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{
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int i, j, base;
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int ret;
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unsigned short col =
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(((((red) & 0xF8) | ((green) >> 5)) & 0xFF) << 8) +
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(((((green) & 0x1C) << 3) | ((blue) >> 3)) & 0xFF);
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int rem = width;
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char *bufptr;
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if (x + width > dev_info->info->var.xres) {
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return -EINVAL;
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}
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if (y + height > dev_info->info->var.yres) {
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return -EINVAL;
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}
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mutex_lock(&dev_info->bulk_mutex);
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base = dev_info->base16 + (dev_info->info->var.xres * 2 * y) + (x * 2);
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bufptr = dev_info->buf;
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for (i = y; i < y + height; i++) {
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for (j = 0; j < width * 2; j += 2) {
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dev_info->backing_buffer[base + j] = (char)(col >> 8);
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dev_info->backing_buffer[base + j + 1] = (char)(col);
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}
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if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) {
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ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
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bufptr = dev_info->buf;
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}
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rem = width;
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while (rem) {
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if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) {
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ret =
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dlfb_bulk_msg(dev_info,
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bufptr - dev_info->buf);
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bufptr = dev_info->buf;
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}
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*bufptr++ = 0xAF;
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*bufptr++ = 0x69;
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*bufptr++ = (char)(base >> 16);
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*bufptr++ = (char)(base >> 8);
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*bufptr++ = (char)(base);
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if (rem > 255) {
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*bufptr++ = 255;
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*bufptr++ = 255;
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rem -= 255;
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base += 255 * 2;
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} else {
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*bufptr++ = rem;
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*bufptr++ = rem;
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base += rem * 2;
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rem = 0;
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}
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*bufptr++ = (char)(col >> 8);
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*bufptr++ = (char)(col);
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}
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base += (dev_info->info->var.xres * 2) - (width * 2);
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}
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if (bufptr > dev_info->buf) {
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ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
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}
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mutex_unlock(&dev_info->bulk_mutex);
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return 1;
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}
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static int
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copyarea(struct dlfb_data *dev_info, int dx, int dy, int sx, int sy,
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int width, int height)
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{
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int base;
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int source;
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int rem;
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int i, ret;
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char *bufptr;
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if (dx + width > dev_info->info->var.xres) {
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return -EINVAL;
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}
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if (dy + height > dev_info->info->var.yres) {
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return -EINVAL;
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}
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mutex_lock(&dev_info->bulk_mutex);
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base =
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dev_info->base16 + (dev_info->info->var.xres * 2 * dy) + (dx * 2);
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source = (dev_info->info->var.xres * 2 * sy) + (sx * 2);
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bufptr = dev_info->buf;
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for (i = sy; i < sy + height; i++) {
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memcpy(dev_info->backing_buffer + base,
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dev_info->backing_buffer + source, width * 2);
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if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) {
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ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
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bufptr = dev_info->buf;
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}
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rem = width;
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while (rem) {
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if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) {
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ret =
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dlfb_bulk_msg(dev_info,
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bufptr - dev_info->buf);
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bufptr = dev_info->buf;
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}
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*bufptr++ = 0xAF;
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*bufptr++ = 0x6A;
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*bufptr++ = (char)(base >> 16);
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*bufptr++ = (char)(base >> 8);
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*bufptr++ = (char)(base);
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if (rem > 255) {
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*bufptr++ = 255;
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*bufptr++ = (char)(source >> 16);
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*bufptr++ = (char)(source >> 8);
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*bufptr++ = (char)(source);
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rem -= 255;
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base += 255 * 2;
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source += 255 * 2;
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} else {
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*bufptr++ = rem;
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*bufptr++ = (char)(source >> 16);
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*bufptr++ = (char)(source >> 8);
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*bufptr++ = (char)(source);
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base += rem * 2;
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source += rem * 2;
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rem = 0;
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}
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}
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base += (dev_info->info->var.xres * 2) - (width * 2);
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source += (dev_info->info->var.xres * 2) - (width * 2);
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}
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if (bufptr > dev_info->buf) {
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ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
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}
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mutex_unlock(&dev_info->bulk_mutex);
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return 1;
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}
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void dlfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
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{
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struct dlfb_data *dev = info->par;
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copyarea(dev, area->dx, area->dy, area->sx, area->sy, area->width,
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area->height);
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//printk("COPY AREA %d %d %d %d %d %d !!!\n", area->dx, area->dy, area->sx, area->sy, area->width, area->height);
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}
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void dlfb_imageblit(struct fb_info *info, const struct fb_image *image)
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{
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int ret;
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struct dlfb_data *dev = info->par;
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//printk("IMAGE BLIT (1) %d %d %d %d DEPTH %d {%p}!!!\n", image->dx, image->dy, image->width, image->height, image->depth, dev->udev);
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cfb_imageblit(info, image);
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ret =
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image_blit(dev, image->dx, image->dy, image->width, image->height,
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info->screen_base);
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//printk("IMAGE BLIT (2) %d %d %d %d DEPTH %d {%p} %d!!!\n", image->dx, image->dy, image->width, image->height, image->depth, dev->udev, ret);
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}
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void dlfb_fillrect(struct fb_info *info, const struct fb_fillrect *region)
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{
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unsigned char red, green, blue;
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struct dlfb_data *dev = info->par;
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memcpy(&red, ®ion->color, 1);
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memcpy(&green, ®ion->color + 1, 1);
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memcpy(&blue, ®ion->color + 2, 1);
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draw_rect(dev, region->dx, region->dy, region->width, region->height,
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red, green, blue);
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//printk("FILL RECT %d %d !!!\n", region->dx, region->dy);
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}
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static int dlfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
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{
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struct dlfb_data *dev_info = info->par;
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struct dloarea *area;
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if (cmd == 0xAA) {
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area = (struct dloarea *)arg;
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if (area->x < 0)
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area->x = 0;
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if (area->x > info->var.xres)
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area->x = info->var.xres;
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if (area->y < 0)
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area->y = 0;
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if (area->y > info->var.yres)
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area->y = info->var.yres;
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image_blit(dev_info, area->x, area->y, area->w, area->h,
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info->screen_base);
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}
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return 0;
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}
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// taken from vesafb
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static int
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dlfb_setcolreg(unsigned regno, unsigned red, unsigned green,
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unsigned blue, unsigned transp, struct fb_info *info)
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{
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int err = 0;
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if (regno >= info->cmap.len)
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return 1;
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if (regno < 16) {
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if (info->var.red.offset == 10) {
|
||||
/* 1:5:5:5 */
|
||||
((u32 *) (info->pseudo_palette))[regno] =
|
||||
((red & 0xf800) >> 1) |
|
||||
((green & 0xf800) >> 6) | ((blue & 0xf800) >> 11);
|
||||
} else {
|
||||
/* 0:5:6:5 */
|
||||
((u32 *) (info->pseudo_palette))[regno] =
|
||||
((red & 0xf800)) |
|
||||
((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
|
||||
}
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static int dlfb_release(struct fb_info *info, int user)
|
||||
{
|
||||
struct dlfb_data *dev_info = info->par;
|
||||
image_blit(dev_info, 0, 0, info->var.xres, info->var.yres,
|
||||
info->screen_base);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int dlfb_blank(int blank_mode, struct fb_info *info) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct fb_ops dlfb_ops = {
|
||||
|
||||
.fb_setcolreg = dlfb_setcolreg,
|
||||
.fb_fillrect = dlfb_fillrect,
|
||||
.fb_copyarea = dlfb_copyarea,
|
||||
.fb_imageblit = dlfb_imageblit,
|
||||
.fb_mmap = dlfb_mmap,
|
||||
.fb_ioctl = dlfb_ioctl,
|
||||
.fb_release = dlfb_release,
|
||||
.fb_blank = dlfb_blank,
|
||||
};
|
||||
|
||||
static int
|
||||
dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
|
||||
{
|
||||
struct dlfb_data *dev_info;
|
||||
struct fb_info *info;
|
||||
int i;
|
||||
|
||||
int ret;
|
||||
char rbuf[4];
|
||||
|
||||
dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL);
|
||||
if (dev_info == NULL) {
|
||||
printk("cannot allocate dev_info structure.\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
mutex_init(&dev_info->bulk_mutex);
|
||||
|
||||
dev_info->udev = usb_get_dev(interface_to_usbdev(interface));
|
||||
dev_info->interface = interface;
|
||||
|
||||
printk("DisplayLink device attached\n");
|
||||
|
||||
// add framebuffer info to usb interface
|
||||
usb_set_intfdata(interface, dev_info);
|
||||
|
||||
dev_info->buf = kmalloc(BUF_SIZE, GFP_KERNEL); //usb_buffer_alloc(dev_info->udev, BUF_SIZE , GFP_KERNEL, &dev_info->tx_urb->transfer_dma);
|
||||
|
||||
if (dev_info->buf == NULL) {
|
||||
printk("unable to allocate memory for dlfb commands\n");
|
||||
goto out;
|
||||
}
|
||||
dev_info->bufend = dev_info->buf + BUF_SIZE;
|
||||
|
||||
dev_info->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
|
||||
usb_fill_bulk_urb(dev_info->tx_urb, dev_info->udev,
|
||||
usb_sndbulkpipe(dev_info->udev, 1), dev_info->buf, 0,
|
||||
dlfb_bulk_callback, dev_info);
|
||||
|
||||
ret =
|
||||
usb_control_msg(dev_info->udev, usb_rcvctrlpipe(dev_info->udev, 0),
|
||||
(0x06), (0x80 | (0x02 << 5)), 0, 0, rbuf, 4, 0);
|
||||
printk("ret control msg 0: %d %x%x%x%x\n", ret, rbuf[0], rbuf[1],
|
||||
rbuf[2], rbuf[3]);
|
||||
|
||||
for (i = 0; i < 128; i++) {
|
||||
ret =
|
||||
usb_control_msg(dev_info->udev,
|
||||
usb_rcvctrlpipe(dev_info->udev, 0), (0x02),
|
||||
(0x80 | (0x02 << 5)), i << 8, 0xA1, rbuf, 2,
|
||||
0);
|
||||
//printk("ret control msg edid %d: %d [%d]\n",i, ret, rbuf[1]);
|
||||
dev_info->edid[i] = rbuf[1];
|
||||
}
|
||||
|
||||
info = framebuffer_alloc(sizeof(u32) * 256, &dev_info->udev->dev);
|
||||
|
||||
if (!info) {
|
||||
printk("non posso allocare il framebuffer displaylink");
|
||||
goto out;
|
||||
}
|
||||
|
||||
fb_parse_edid(dev_info->edid, &info->var);
|
||||
|
||||
printk("EDID XRES %d YRES %d\n", info->var.xres, info->var.yres);
|
||||
|
||||
if (dlfb_set_video_mode(dev_info, info->var.xres, info->var.yres) != 0) {
|
||||
goto out;
|
||||
}
|
||||
|
||||
printk("found valid mode...%d\n", info->var.pixclock);
|
||||
|
||||
info->pseudo_palette = info->par;
|
||||
info->par = dev_info;
|
||||
|
||||
dev_info->info = info;
|
||||
|
||||
info->flags =
|
||||
FBINFO_DEFAULT | FBINFO_READS_FAST | FBINFO_HWACCEL_IMAGEBLIT |
|
||||
FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT;
|
||||
info->fbops = &dlfb_ops;
|
||||
info->screen_base = rvmalloc(dev_info->screen_size);
|
||||
|
||||
if (info->screen_base == NULL) {
|
||||
printk
|
||||
("cannot allocate framebuffer virtual memory of %d bytes\n",
|
||||
dev_info->screen_size);
|
||||
goto out0;
|
||||
}
|
||||
|
||||
printk("screen base allocated !!!\n");
|
||||
|
||||
dev_info->backing_buffer = kzalloc(dev_info->screen_size, GFP_KERNEL);
|
||||
|
||||
if (!dev_info->backing_buffer) {
|
||||
printk("non posso allocare il backing buffer\n");
|
||||
}
|
||||
//info->var = dev_info->si;
|
||||
|
||||
info->var.bits_per_pixel = 16;
|
||||
info->var.activate = FB_ACTIVATE_TEST;
|
||||
info->var.vmode = FB_VMODE_NONINTERLACED;
|
||||
|
||||
info->var.red.offset = 11;
|
||||
info->var.red.length = 5;
|
||||
info->var.red.msb_right = 0;
|
||||
|
||||
info->var.green.offset = 5;
|
||||
info->var.green.length = 6;
|
||||
info->var.green.msb_right = 0;
|
||||
|
||||
info->var.blue.offset = 0;
|
||||
info->var.blue.length = 5;
|
||||
info->var.blue.msb_right = 0;
|
||||
|
||||
//info->var.pixclock = (10000000 / FB_W * 1000 / FB_H)/2 ;
|
||||
|
||||
info->fix.smem_start = (unsigned long)info->screen_base;
|
||||
info->fix.smem_len = PAGE_ALIGN(dev_info->screen_size);
|
||||
memcpy(info->fix.id, "DisplayLink FB", 14);
|
||||
info->fix.type = FB_TYPE_PACKED_PIXELS;
|
||||
info->fix.visual = FB_VISUAL_TRUECOLOR;
|
||||
info->fix.accel = info->flags;
|
||||
info->fix.line_length = dev_info->line_length;
|
||||
|
||||
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
|
||||
goto out1;
|
||||
}
|
||||
|
||||
printk("colormap allocated\n");
|
||||
if (register_framebuffer(info) < 0) {
|
||||
goto out2;
|
||||
}
|
||||
|
||||
draw_rect(dev_info, 0, 0, dev_info->info->var.xres,
|
||||
dev_info->info->var.yres, 0x30, 0xff, 0x30);
|
||||
|
||||
return 0;
|
||||
|
||||
out2:
|
||||
fb_dealloc_cmap(&info->cmap);
|
||||
out1:
|
||||
rvfree(info->screen_base, dev_info->screen_size);
|
||||
out0:
|
||||
framebuffer_release(info);
|
||||
out:
|
||||
usb_set_intfdata(interface, NULL);
|
||||
usb_put_dev(dev_info->udev);
|
||||
kfree(dev_info);
|
||||
return -ENOMEM;
|
||||
|
||||
}
|
||||
|
||||
static void dlfb_disconnect(struct usb_interface *interface)
|
||||
{
|
||||
struct dlfb_data *dev_info = usb_get_intfdata(interface);
|
||||
|
||||
mutex_unlock(&dev_info->bulk_mutex);
|
||||
|
||||
usb_kill_urb(dev_info->tx_urb);
|
||||
usb_free_urb(dev_info->tx_urb);
|
||||
usb_set_intfdata(interface, NULL);
|
||||
usb_put_dev(dev_info->udev);
|
||||
|
||||
if (dev_info->info) {
|
||||
unregister_framebuffer(dev_info->info);
|
||||
fb_dealloc_cmap(&dev_info->info->cmap);
|
||||
rvfree(dev_info->info->screen_base, dev_info->screen_size);
|
||||
kfree(dev_info->backing_buffer);
|
||||
framebuffer_release(dev_info->info);
|
||||
|
||||
}
|
||||
|
||||
kfree(dev_info);
|
||||
|
||||
printk("DisplayLink device disconnected\n");
|
||||
}
|
||||
|
||||
static struct usb_driver dlfb_driver = {
|
||||
.name = "udlfb",
|
||||
.probe = dlfb_probe,
|
||||
.disconnect = dlfb_disconnect,
|
||||
.id_table = id_table,
|
||||
};
|
||||
|
||||
static int __init dlfb_init(void)
|
||||
{
|
||||
int res;
|
||||
|
||||
dlfb_init_modes();
|
||||
|
||||
res = usb_register(&dlfb_driver);
|
||||
if (res)
|
||||
err("usb_register failed. Error number %d", res);
|
||||
|
||||
printk("VMODES initialized\n");
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
static void __exit dlfb_exit(void)
|
||||
{
|
||||
usb_deregister(&dlfb_driver);
|
||||
}
|
||||
|
||||
module_init(dlfb_init);
|
||||
module_exit(dlfb_exit);
|
||||
|
||||
MODULE_AUTHOR("Roberto De Ioris <roberto@unbit.it>");
|
||||
MODULE_DESCRIPTION(DRIVER_VERSION);
|
||||
MODULE_LICENSE("GPL");
|
||||
204
drivers/staging/udlfb/udlfb.h
Normal file
204
drivers/staging/udlfb/udlfb.h
Normal file
@ -0,0 +1,204 @@
|
||||
#define MAX_VMODES 4
|
||||
#define FB_BPP 16
|
||||
|
||||
#define STD_CHANNEL "\x57\xCD\xDC\xA7\x1C\x88\x5E\x15\x60\xFE\xC6\x97\x16\x3D\x47\xF2"
|
||||
|
||||
// as libdlo
|
||||
#define BUF_HIGH_WATER_MARK 1024
|
||||
#define BUF_SIZE 64*1024
|
||||
|
||||
struct dlfb_data {
|
||||
struct usb_device *udev;
|
||||
struct usb_interface *interface;
|
||||
struct urb *tx_urb, *ctrl_urb;
|
||||
struct usb_ctrlrequest dr;
|
||||
struct fb_info *info;
|
||||
char *buf;
|
||||
char *bufend;
|
||||
char *backing_buffer;
|
||||
struct mutex bulk_mutex;
|
||||
char edid[128];
|
||||
int screen_size;
|
||||
int line_length;
|
||||
struct completion done;
|
||||
int base16;
|
||||
int base8;
|
||||
};
|
||||
|
||||
struct dlfb_video_mode {
|
||||
|
||||
uint8_t col;
|
||||
uint32_t hclock;
|
||||
uint32_t vclock;
|
||||
uint8_t unknown1[6];
|
||||
uint16_t xres;
|
||||
uint8_t unknown2[6];
|
||||
uint16_t yres;
|
||||
uint8_t unknown3[4];
|
||||
|
||||
} __attribute__ ((__packed__));
|
||||
|
||||
struct dlfb_video_mode dlfb_video_modes[MAX_VMODES];
|
||||
|
||||
static void dlfb_bulk_callback(struct urb *urb)
|
||||
{
|
||||
|
||||
struct dlfb_data *dev_info = urb->context;
|
||||
complete(&dev_info->done);
|
||||
|
||||
}
|
||||
|
||||
static int dlfb_bulk_msg(struct dlfb_data *dev_info, int len)
|
||||
{
|
||||
|
||||
int ret;
|
||||
|
||||
init_completion(&dev_info->done);
|
||||
|
||||
dev_info->tx_urb->actual_length = 0;
|
||||
dev_info->tx_urb->transfer_buffer_length = len;
|
||||
|
||||
ret = usb_submit_urb(dev_info->tx_urb, GFP_KERNEL);
|
||||
if (!wait_for_completion_timeout(&dev_info->done, 1000)) {
|
||||
usb_kill_urb(dev_info->tx_urb);
|
||||
printk("usb timeout !!!\n");
|
||||
}
|
||||
|
||||
return dev_info->tx_urb->actual_length;
|
||||
|
||||
}
|
||||
|
||||
void dlfb_init_modes(void)
|
||||
{
|
||||
|
||||
dlfb_video_modes[0].col = 0;
|
||||
memcpy(&dlfb_video_modes[0].hclock, "\x20\x3C\x7A\xC9", 4);
|
||||
memcpy(&dlfb_video_modes[0].vclock, "\xF2\x6C\x48\xF9", 4);
|
||||
memcpy(&dlfb_video_modes[0].unknown1, "\x70\x53\xFF\xFF\x21\x27", 6);
|
||||
dlfb_video_modes[0].xres = 800;
|
||||
memcpy(&dlfb_video_modes[0].unknown2, "\x91\xF3\xFF\xFF\xFF\xF9", 6);
|
||||
dlfb_video_modes[0].yres = 480;
|
||||
memcpy(&dlfb_video_modes[0].unknown3, "\x01\x02\xC8\x19", 4);
|
||||
|
||||
dlfb_video_modes[1].col = 0;
|
||||
memcpy(&dlfb_video_modes[1].hclock, "\x36\x18\xD5\x10", 4);
|
||||
memcpy(&dlfb_video_modes[1].vclock, "\x60\xA9\x7B\x33", 4);
|
||||
memcpy(&dlfb_video_modes[1].unknown1, "\xA1\x2B\x27\x32\xFF\xFF", 6);
|
||||
dlfb_video_modes[1].xres = 1024;
|
||||
memcpy(&dlfb_video_modes[1].unknown2, "\xD9\x9A\xFF\xCA\xFF\xFF", 6);
|
||||
dlfb_video_modes[1].yres = 768;
|
||||
memcpy(&dlfb_video_modes[1].unknown3, "\x04\x03\xC8\x32", 4);
|
||||
|
||||
dlfb_video_modes[2].col = 0;
|
||||
memcpy(&dlfb_video_modes[2].hclock, "\x98\xF8\x0D\x57", 4);
|
||||
memcpy(&dlfb_video_modes[2].vclock, "\x2A\x55\x4D\x54", 4);
|
||||
memcpy(&dlfb_video_modes[2].unknown1, "\xCA\x0D\xFF\xFF\x94\x43", 6);
|
||||
dlfb_video_modes[2].xres = 1280;
|
||||
memcpy(&dlfb_video_modes[2].unknown2, "\x9A\xA8\xFF\xFF\xFF\xF9", 6);
|
||||
dlfb_video_modes[2].yres = 1024;
|
||||
memcpy(&dlfb_video_modes[2].unknown3, "\x04\x02\x60\x54", 4);
|
||||
|
||||
dlfb_video_modes[3].col = 0;
|
||||
memcpy(&dlfb_video_modes[3].hclock, "\x42\x24\x38\x36", 4);
|
||||
memcpy(&dlfb_video_modes[3].vclock, "\xC1\x52\xD9\x29", 4);
|
||||
memcpy(&dlfb_video_modes[3].unknown1, "\xEA\xB8\x32\x60\xFF\xFF", 6);
|
||||
dlfb_video_modes[3].xres = 1400;
|
||||
memcpy(&dlfb_video_modes[3].unknown2, "\xC9\x4E\xFF\xFF\xFF\xF2", 6);
|
||||
dlfb_video_modes[3].yres = 1050;
|
||||
memcpy(&dlfb_video_modes[3].unknown3, "\x04\x02\x1E\x5F", 4);
|
||||
|
||||
}
|
||||
|
||||
char *dlfb_set_register(char *bufptr, uint8_t reg, uint8_t val)
|
||||
{
|
||||
|
||||
*bufptr++ = 0xAF;
|
||||
*bufptr++ = 0x20;
|
||||
*bufptr++ = reg;
|
||||
*bufptr++ = val;
|
||||
|
||||
return bufptr;
|
||||
|
||||
}
|
||||
|
||||
int dlfb_set_video_mode(struct dlfb_data *dev_info, int width, int height)
|
||||
{
|
||||
|
||||
int i, ret;
|
||||
unsigned char j;
|
||||
char *bufptr = dev_info->buf;
|
||||
uint8_t *vdata;
|
||||
|
||||
for (i = 0; i < MAX_VMODES; i++) {
|
||||
printk("INIT VIDEO %d %d %d\n", i, dlfb_video_modes[i].xres,
|
||||
dlfb_video_modes[i].yres);
|
||||
if (dlfb_video_modes[i].xres == width
|
||||
&& dlfb_video_modes[i].yres == height) {
|
||||
|
||||
dev_info->base16 = 0;
|
||||
|
||||
dev_info->base8 = width * height * (FB_BPP / 8);;
|
||||
|
||||
// set encryption key (null)
|
||||
memcpy(dev_info->buf, STD_CHANNEL, 16);
|
||||
ret =
|
||||
usb_control_msg(dev_info->udev,
|
||||
usb_sndctrlpipe(dev_info->udev, 0),
|
||||
0x12, (0x02 << 5), 0, 0,
|
||||
dev_info->buf, 16, 0);
|
||||
printk("ret control msg 1 (STD_CHANNEL): %d\n", ret);
|
||||
|
||||
// set registers
|
||||
bufptr = dlfb_set_register(bufptr, 0xFF, 0x00);
|
||||
|
||||
// set addresses
|
||||
bufptr =
|
||||
dlfb_set_register(bufptr, 0x20,
|
||||
(char)(dev_info->base16 >> 16));
|
||||
bufptr =
|
||||
dlfb_set_register(bufptr, 0x21,
|
||||
(char)(dev_info->base16 >> 8));
|
||||
bufptr =
|
||||
dlfb_set_register(bufptr, 0x22,
|
||||
(char)(dev_info->base16));
|
||||
|
||||
bufptr =
|
||||
dlfb_set_register(bufptr, 0x26,
|
||||
(char)(dev_info->base8 >> 16));
|
||||
bufptr =
|
||||
dlfb_set_register(bufptr, 0x27,
|
||||
(char)(dev_info->base8 >> 8));
|
||||
bufptr =
|
||||
dlfb_set_register(bufptr, 0x28,
|
||||
(char)(dev_info->base8));
|
||||
|
||||
// set video mode
|
||||
vdata = (uint8_t *) & dlfb_video_modes[i];
|
||||
for (j = 0; j < 29; j++) {
|
||||
bufptr = dlfb_set_register(bufptr, j, vdata[j]);
|
||||
}
|
||||
|
||||
// blank
|
||||
bufptr = dlfb_set_register(bufptr, 0x1F, 0x00);
|
||||
|
||||
// end registers
|
||||
bufptr = dlfb_set_register(bufptr, 0xFF, 0xFF);
|
||||
|
||||
// send
|
||||
ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
|
||||
printk("ret bulk 2: %d %d\n", ret,
|
||||
bufptr - dev_info->buf);
|
||||
|
||||
// flush
|
||||
ret = dlfb_bulk_msg(dev_info, 0);
|
||||
printk("ret bulk 3: %d\n", ret);
|
||||
|
||||
dev_info->screen_size = width * height * (FB_BPP / 8);
|
||||
dev_info->line_length = width * (FB_BPP / 8);
|
||||
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user