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https://github.com/adulau/aha.git
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Staging: udlfb: update to version 0.2.3
This updates the udlfb to the 0.2.3 version. 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
4b6a4856c6
commit
7316bc55ed
2 changed files with 304 additions and 93 deletions
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@ -7,6 +7,8 @@
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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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* 10.06.09 release 0.2.3 (edid ioctl, fallback for unsupported modes) *
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* 05.06.09 release 0.2.2 (real screen blanking, rle compression, double buffer) *
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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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@ -99,6 +101,7 @@ static int dlfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
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struct dloarea {
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int x, y;
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int w, h;
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int x2, y2;
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};
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/*
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@ -116,6 +119,37 @@ MODULE_DEVICE_TABLE(usb, id_table);
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static struct usb_driver dlfb_driver;
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// thanks to Henrik Bjerregaard Pedersen for this function
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static char *rle_compress16(uint16_t * src, char *dst, int rem)
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{
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int rl;
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uint16_t pix0;
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char *end_if_raw = dst + 6 + 2 * rem;
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dst += 6; // header will be filled in if RLE is worth it
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while (rem && dst < end_if_raw) {
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char *start = (char *)src;
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pix0 = *src++;
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rl = 1;
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rem--;
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while (rem && *src == pix0)
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rem--, rl++, src++;
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*dst++ = rl;
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*dst++ = start[1];
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*dst++ = start[0];
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}
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return dst;
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}
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/*
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Thanks to Henrik Bjerregaard Pedersen for rle implementation and code refactoring.
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Next step is huffman compression.
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*/
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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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@ -125,7 +159,7 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height,
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int rem = width;
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int ret;
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int diff;
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int firstdiff, thistime;
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char *bufptr;
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@ -137,7 +171,8 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height,
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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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base =
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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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@ -164,86 +199,84 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height,
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bufptr - dev_info->buf);
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bufptr = dev_info->buf;
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}
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// number of pixels to consider this time
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thistime = rem;
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if (thistime > 255)
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thistime = 255;
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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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// find position of first pixel that has changed
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firstdiff = -1;
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for (j = 0; j < thistime * 2; j++) {
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if (dev_info->backing_buffer
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[base - dev_info->base16 + j] != data[j]) {
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firstdiff = j / 2;
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break;
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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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if (firstdiff >= 0) {
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char *end_of_rle;
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end_of_rle =
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rle_compress16((uint16_t *) (data +
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firstdiff * 2),
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bufptr,
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thistime - firstdiff);
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if (end_of_rle <
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bufptr + 6 + 2 * (thistime - firstdiff)) {
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bufptr[0] = 0xAF;
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bufptr[1] = 0x69;
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bufptr[2] =
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(char)((base +
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firstdiff * 2) >> 16);
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bufptr[3] =
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(char)((base + firstdiff * 2) >> 8);
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bufptr[4] =
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(char)(base + firstdiff * 2);
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bufptr[5] = thistime - firstdiff;
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bufptr = end_of_rle;
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} else {
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// fallback to raw (or some other encoding?)
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*bufptr++ = 0xAF;
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*bufptr++ = 0x68;
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*bufptr++ =
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(char)((base +
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firstdiff * 2) >> 16);
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*bufptr++ =
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(char)((base + firstdiff * 2) >> 8);
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*bufptr++ =
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(char)(base + firstdiff * 2);
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*bufptr++ = thistime - firstdiff;
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// PUT COMPRESSION HERE
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for (j = firstdiff * 2;
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j < thistime * 2; j += 2) {
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*bufptr++ = data[j + 1];
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*bufptr++ = data[j];
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}
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}
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}
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base += thistime * 2;
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data += thistime * 2;
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rem -= thistime;
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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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memcpy(dev_info->backing_buffer + (base - dev_info->base16) -
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(width * 2), 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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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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@ -280,8 +313,10 @@ draw_rect(struct dlfb_data *dev_info, int x, int y, int width, int height,
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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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dev_info->backing_buffer[base - dev_info->base16 + j] =
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(char)(col >> 8);
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dev_info->backing_buffer[base - dev_info->base16 + j +
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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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@ -335,6 +370,111 @@ draw_rect(struct dlfb_data *dev_info, int x, int y, int width, int height,
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return 1;
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}
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static void swapfb(struct dlfb_data *dev_info)
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{
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int tmpbase;
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char *bufptr;
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mutex_lock(&dev_info->bulk_mutex);
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tmpbase = dev_info->base16;
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dev_info->base16 = dev_info->base16d;
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dev_info->base16d = tmpbase;
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bufptr = dev_info->buf;
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bufptr = dlfb_set_register(bufptr, 0xFF, 0x00);
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// set addresses
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bufptr =
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dlfb_set_register(bufptr, 0x20, (char)(dev_info->base16 >> 16));
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bufptr = dlfb_set_register(bufptr, 0x21, (char)(dev_info->base16 >> 8));
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bufptr = dlfb_set_register(bufptr, 0x22, (char)(dev_info->base16));
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bufptr = dlfb_set_register(bufptr, 0xFF, 0x00);
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dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
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mutex_unlock(&dev_info->bulk_mutex);
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}
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static int copyfb(struct dlfb_data *dev_info)
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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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base = dev_info->base16d;
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mutex_lock(&dev_info->bulk_mutex);
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source = dev_info->base16;
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bufptr = dev_info->buf;
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for (i = 0; i < dev_info->info->var.yres; 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 = dev_info->info->var.xres;
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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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}
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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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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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@ -362,7 +502,7 @@ copyarea(struct dlfb_data *dev_info, int dx, int dy, int sx, int sy,
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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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memcpy(dev_info->backing_buffer + base - dev_info->base16,
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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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@ -447,7 +587,8 @@ static void dlfb_imageblit(struct fb_info *info, const struct fb_image *image)
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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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static void dlfb_fillrect(struct fb_info *info, const struct fb_fillrect *region)
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static void dlfb_fillrect(struct fb_info *info,
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const struct fb_fillrect *region)
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{
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unsigned char red, green, blue;
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@ -466,9 +607,18 @@ 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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struct dloarea *area = NULL;
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if (cmd == 0xAA) {
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if (cmd == 0xAD) {
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char *edid = (char *)arg;
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dlfb_edid(dev_info);
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if (copy_to_user(edid, dev_info->edid, 128)) {
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return -EFAULT;
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}
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return 0;
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}
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if (cmd == 0xAA || cmd == 0xAB || cmd == 0xAC) {
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area = (struct dloarea *)arg;
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@ -483,10 +633,29 @@ static int dlfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
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if (area->y > info->var.yres)
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area->y = info->var.yres;
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}
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if (cmd == 0xAA) {
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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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if (cmd == 0xAC) {
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copyfb(dev_info);
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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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swapfb(dev_info);
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} else if (cmd == 0xAB) {
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if (area->x2 < 0)
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area->x2 = 0;
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if (area->y2 < 0)
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area->y2 = 0;
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copyarea(dev_info,
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area->x2, area->y2, area->x, area->y, area->w,
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area->h);
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}
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return 0;
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}
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@ -528,6 +697,19 @@ static int dlfb_release(struct fb_info *info, int user)
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static int dlfb_blank(int blank_mode, struct fb_info *info)
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{
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struct dlfb_data *dev_info = info->par;
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char *bufptr = dev_info->buf;
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bufptr = dlfb_set_register(bufptr, 0xFF, 0x00);
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if (blank_mode != FB_BLANK_UNBLANK) {
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bufptr = dlfb_set_register(bufptr, 0x1F, 0x01);
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} else {
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bufptr = dlfb_set_register(bufptr, 0x1F, 0x00);
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}
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bufptr = dlfb_set_register(bufptr, 0xFF, 0xFF);
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dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
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return 0;
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}
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@ -547,7 +729,6 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
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{
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struct dlfb_data *dev_info;
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struct fb_info *info;
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int i;
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int ret;
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char rbuf[4];
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@ -588,15 +769,7 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
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printk("ret control msg 0: %d %x%x%x%x\n", ret, rbuf[0], rbuf[1],
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rbuf[2], rbuf[3]);
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for (i = 0; i < 128; i++) {
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ret =
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usb_control_msg(dev_info->udev,
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usb_rcvctrlpipe(dev_info->udev, 0), (0x02),
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(0x80 | (0x02 << 5)), i << 8, 0xA1, rbuf, 2,
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0);
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/* printk("ret control msg edid %d: %d [%d]\n",i, ret, rbuf[1]); */
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dev_info->edid[i] = rbuf[1];
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}
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dlfb_edid(dev_info);
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info = framebuffer_alloc(sizeof(u32) * 256, &dev_info->udev->dev);
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@ -609,8 +782,14 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
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printk("EDID XRES %d YRES %d\n", info->var.xres, info->var.yres);
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|
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if (dlfb_set_video_mode(dev_info, info->var.xres, info->var.yres) != 0)
|
||||
goto out;
|
||||
if (dlfb_set_video_mode(dev_info, info->var.xres, info->var.yres) != 0) {
|
||||
info->var.xres = 1280;
|
||||
info->var.yres = 1024;
|
||||
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);
|
||||
|
||||
|
|
@ -661,7 +840,12 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
|
|||
|
||||
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);
|
||||
if (strlen(dev_info->udev->product) > 15) {
|
||||
memcpy(info->fix.id, dev_info->udev->product, 15);
|
||||
} else {
|
||||
memcpy(info->fix.id, dev_info->udev->product,
|
||||
strlen(dev_info->udev->product));
|
||||
}
|
||||
info->fix.type = FB_TYPE_PACKED_PIXELS;
|
||||
info->fix.visual = FB_VISUAL_TRUECOLOR;
|
||||
info->fix.accel = info->flags;
|
||||
|
|
@ -679,13 +863,13 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
|
|||
|
||||
return 0;
|
||||
|
||||
out2:
|
||||
out2:
|
||||
fb_dealloc_cmap(&info->cmap);
|
||||
out1:
|
||||
out1:
|
||||
rvfree(info->screen_base, dev_info->screen_size);
|
||||
out0:
|
||||
out0:
|
||||
framebuffer_release(info);
|
||||
out:
|
||||
out:
|
||||
usb_set_intfdata(interface, NULL);
|
||||
usb_put_dev(dev_info->udev);
|
||||
kfree(dev_info);
|
||||
|
|
|
|||
|
|
@ -26,7 +26,9 @@ struct dlfb_data {
|
|||
int line_length;
|
||||
struct completion done;
|
||||
int base16;
|
||||
int base16d;
|
||||
int base8;
|
||||
int base8d;
|
||||
};
|
||||
|
||||
struct dlfb_video_mode {
|
||||
|
|
@ -48,6 +50,24 @@ static void dlfb_bulk_callback(struct urb *urb)
|
|||
complete(&dev_info->done);
|
||||
}
|
||||
|
||||
static void dlfb_edid(struct dlfb_data *dev_info)
|
||||
{
|
||||
int i;
|
||||
int ret;
|
||||
char rbuf[2];
|
||||
|
||||
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];
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
static int dlfb_bulk_msg(struct dlfb_data *dev_info, int len)
|
||||
{
|
||||
int ret;
|
||||
|
|
@ -129,8 +149,12 @@ static int dlfb_set_video_mode(struct dlfb_data *dev_info, int width, int height
|
|||
&& dlfb_video_modes[i].yres == height) {
|
||||
|
||||
dev_info->base16 = 0;
|
||||
dev_info->base16d = width * height * (FB_BPP / 8);
|
||||
|
||||
dev_info->base8 = width * height * (FB_BPP / 8);;
|
||||
//dev_info->base8 = width * height * (FB_BPP / 8);
|
||||
|
||||
dev_info->base8 = dev_info->base16;
|
||||
dev_info->base8d = dev_info->base16d;
|
||||
|
||||
/* set encryption key (null) */
|
||||
memcpy(dev_info->buf, STD_CHANNEL, 16);
|
||||
|
|
@ -144,6 +168,9 @@ static int dlfb_set_video_mode(struct dlfb_data *dev_info, int width, int height
|
|||
/* set registers */
|
||||
bufptr = dlfb_set_register(bufptr, 0xFF, 0x00);
|
||||
|
||||
/* set color depth */
|
||||
bufptr = dlfb_set_register(bufptr, 0x00, 0x00);
|
||||
|
||||
/* set addresses */
|
||||
bufptr =
|
||||
dlfb_set_register(bufptr, 0x20,
|
||||
|
|
|
|||
Loading…
Reference in a new issue