diff options
Diffstat (limited to 'recipes/libdlo/kernel-module-udlfb')
-rw-r--r-- | recipes/libdlo/kernel-module-udlfb/udlfb.c | 344 | ||||
-rw-r--r-- | recipes/libdlo/kernel-module-udlfb/udlfb.h | 78 |
2 files changed, 211 insertions, 211 deletions
diff --git a/recipes/libdlo/kernel-module-udlfb/udlfb.c b/recipes/libdlo/kernel-module-udlfb/udlfb.c index abeca9bd12..7468bca476 100644 --- a/recipes/libdlo/kernel-module-udlfb/udlfb.c +++ b/recipes/libdlo/kernel-module-udlfb/udlfb.c @@ -1,17 +1,17 @@ -/************************************************************************************ - * DLFB Kernel Driver * - * Version 0.2 (udlfb) * - * (C) 2009 Roberto De Ioris <roberto@unbit.it> * - * * - * This file is licensed under the GPLv2. See COPYING in the package. * - * Based on the amazing work of Florian Echtler and libdlo 0.1 * - * * - * * - * 10.06.09 release 0.2.3 (edid ioctl, fallback for unsupported modes) * - * 05.06.09 release 0.2.2 (real screen blanking, rle compression, double buffer) * - * 31.05.09 release 0.2 * - * 22.05.09 First public (ugly) release * - ************************************************************************************/ +/***************************************************************************** + * DLFB Kernel Driver * + * Version 0.2 (udlfb) * + * (C) 2009 Roberto De Ioris <roberto@unbit.it> * + * * + * This file is licensed under the GPLv2. See COPYING in the package. * + * Based on the amazing work of Florian Echtler and libdlo 0.1 * + * * + * * + * 10.06.09 release 0.2.3 (edid ioctl, fallback for unsupported modes) * + * 05.06.09 release 0.2.2 (real screen blanking, rle compression, double buffer) * + * 31.05.09 release 0.2 * + * 22.05.09 First public (ugly) release * + *****************************************************************************/ #include <linux/module.h> #include <linux/kernel.h> @@ -121,30 +121,29 @@ MODULE_DEVICE_TABLE(usb, id_table); static struct usb_driver dlfb_driver; // thanks to Henrik Bjerregaard Pedersen for this function -static char * -rle_compress16(uint16_t *src, char *dst, int rem) +static char *rle_compress16(uint16_t * src, char *dst, int rem) { - int rl; - uint16_t pix0; - char *end_if_raw = dst + 6 + 2 * rem; + int rl; + uint16_t pix0; + char *end_if_raw = dst + 6 + 2 * rem; - dst += 6; // header will be filled in if RLE is worth it + dst += 6; // header will be filled in if RLE is worth it - while (rem && dst < end_if_raw) { - char *start = (char *)src; + while (rem && dst < end_if_raw) { + char *start = (char *)src; - pix0 = *src++; - rl = 1; - rem--; - while (rem && *src == pix0) - rem--, rl++, src++; - *dst++ = rl; - *dst++ = start[1]; - *dst++ = start[0]; - } + pix0 = *src++; + rl = 1; + rem--; + while (rem && *src == pix0) + rem--, rl++, src++; + *dst++ = rl; + *dst++ = start[1]; + *dst++ = start[0]; + } - return dst; + return dst; } /* @@ -165,21 +164,20 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height, char *bufptr; - if (x + width > dev_info->info->var.xres) { + if (x + width > dev_info->info->var.xres) return -EINVAL; - } - if (y + height > dev_info->info->var.yres) { + if (y + height > dev_info->info->var.yres) return -EINVAL; - } mutex_lock(&dev_info->bulk_mutex); - base = dev_info->base16 + ( (dev_info->info->var.xres * 2 * y) + (x * 2) ); + base = + dev_info->base16 + ((dev_info->info->var.xres * 2 * y) + (x * 2)); data += (dev_info->info->var.xres * 2 * y) + (x * 2); - //printk("IMAGE_BLIT\n"); + /* printk("IMAGE_BLIT\n"); */ bufptr = dev_info->buf; @@ -192,7 +190,7 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height, rem = width; - //printk("WRITING LINE %d\n", i); + /* printk("WRITING LINE %d\n", i); */ while (rem) { @@ -202,56 +200,66 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height, bufptr - dev_info->buf); bufptr = dev_info->buf; } + // number of pixels to consider this time + thistime = rem; + if (thistime > 255) + thistime = 255; - // number of pixels to consider this time - thistime = rem; - if (thistime > 255) - thistime = 255; - - // find position of first pixel that has changed + // find position of first pixel that has changed firstdiff = -1; for (j = 0; j < thistime * 2; j++) { - if (dev_info-> - backing_buffer[ base - dev_info->base16 + j] != - data[j]) { - firstdiff = j/2; + if (dev_info->backing_buffer + [base - dev_info->base16 + j] != data[j]) { + firstdiff = j / 2; break; } } if (firstdiff >= 0) { - char *end_of_rle; - - end_of_rle = - rle_compress16((uint16_t *)(data + firstdiff * 2), - bufptr, thistime-firstdiff); - - if (end_of_rle < bufptr + 6 + 2 * (thistime-firstdiff)) { - bufptr[0] = 0xAF; - bufptr[1] = 0x69; - - bufptr[2] = (char)((base+firstdiff*2) >> 16); - bufptr[3] = (char)((base+firstdiff*2) >> 8); - bufptr[4] = (char)(base+firstdiff*2); - bufptr[5] = thistime-firstdiff; - - bufptr = end_of_rle; - - } else { - // fallback to raw (or some other encoding?) - *bufptr++ = 0xAF; - *bufptr++ = 0x68; - - *bufptr++ = (char)((base+firstdiff*2) >> 16); - *bufptr++ = (char)((base+firstdiff*2) >> 8); - *bufptr++ = (char)(base+firstdiff*2); - *bufptr++ = thistime-firstdiff; - // PUT COMPRESSION HERE - for (j = firstdiff * 2; j < thistime * 2; j += 2) { - *bufptr++ = data[j + 1]; - *bufptr++ = data[j]; - } - } + char *end_of_rle; + + end_of_rle = + rle_compress16((uint16_t *) (data + + firstdiff * 2), + bufptr, + thistime - firstdiff); + + if (end_of_rle < + bufptr + 6 + 2 * (thistime - firstdiff)) { + bufptr[0] = 0xAF; + bufptr[1] = 0x69; + + bufptr[2] = + (char)((base + + firstdiff * 2) >> 16); + bufptr[3] = + (char)((base + firstdiff * 2) >> 8); + bufptr[4] = + (char)(base + firstdiff * 2); + bufptr[5] = thistime - firstdiff; + + bufptr = end_of_rle; + + } else { + // fallback to raw (or some other encoding?) + *bufptr++ = 0xAF; + *bufptr++ = 0x68; + + *bufptr++ = + (char)((base + + firstdiff * 2) >> 16); + *bufptr++ = + (char)((base + firstdiff * 2) >> 8); + *bufptr++ = + (char)(base + firstdiff * 2); + *bufptr++ = thistime - firstdiff; + // PUT COMPRESSION HERE + for (j = firstdiff * 2; + j < thistime * 2; j += 2) { + *bufptr++ = data[j + 1]; + *bufptr++ = data[j]; + } + } } base += thistime * 2; @@ -259,8 +267,8 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height, rem -= thistime; } - memcpy(dev_info->backing_buffer + (base-dev_info->base16) - (width * 2), - data - (width * 2), width * 2); + memcpy(dev_info->backing_buffer + (base - dev_info->base16) - + (width * 2), data - (width * 2), width * 2); base += (dev_info->info->var.xres * 2) - (width * 2); data += (dev_info->info->var.xres * 2) - (width * 2); @@ -276,6 +284,7 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height, return base; } + static int draw_rect(struct dlfb_data *dev_info, int x, int y, int width, int height, unsigned char red, unsigned char green, unsigned char blue) @@ -305,8 +314,10 @@ draw_rect(struct dlfb_data *dev_info, int x, int y, int width, int height, for (i = y; i < y + height; i++) { for (j = 0; j < width * 2; j += 2) { - dev_info->backing_buffer[base - dev_info->base16 + j] = (char)(col >> 8); - dev_info->backing_buffer[base - dev_info->base16 + j + 1] = (char)(col); + dev_info->backing_buffer[base - dev_info->base16 + j] = + (char)(col >> 8); + dev_info->backing_buffer[base - dev_info->base16 + j + + 1] = (char)(col); } if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); @@ -360,14 +371,15 @@ draw_rect(struct dlfb_data *dev_info, int x, int y, int width, int height, return 1; } -static void swapfb(struct dlfb_data *dev_info) { +static void swapfb(struct dlfb_data *dev_info) +{ int tmpbase; char *bufptr; mutex_lock(&dev_info->bulk_mutex); - tmpbase = dev_info->base16 ; + tmpbase = dev_info->base16; dev_info->base16 = dev_info->base16d; dev_info->base16d = tmpbase; @@ -375,17 +387,12 @@ static void swapfb(struct dlfb_data *dev_info) { bufptr = dev_info->buf; 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)); + + // 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, 0xFF, 0x00); @@ -397,12 +404,11 @@ static void swapfb(struct dlfb_data *dev_info) { static int copyfb(struct dlfb_data *dev_info) { int base; - int source; - int rem; - int i, ret; - - char *bufptr; + int source; + int rem; + int i, ret; + char *bufptr; base = dev_info->base16d; @@ -415,59 +421,59 @@ static int copyfb(struct dlfb_data *dev_info) for (i = 0; i < dev_info->info->var.yres; i++) { if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { - ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); - bufptr = dev_info->buf; - } + ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); + bufptr = dev_info->buf; + } - rem = dev_info->info->var.xres; + rem = dev_info->info->var.xres; while (rem) { - if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { - ret = - dlfb_bulk_msg(dev_info, - bufptr - dev_info->buf); - bufptr = dev_info->buf; + if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { + ret = + dlfb_bulk_msg(dev_info, + bufptr - dev_info->buf); + bufptr = dev_info->buf; + + } + + *bufptr++ = 0xAF; + *bufptr++ = 0x6A; + + *bufptr++ = (char)(base >> 16); + *bufptr++ = (char)(base >> 8); + *bufptr++ = (char)(base); + + if (rem > 255) { + *bufptr++ = 255; + *bufptr++ = (char)(source >> 16); + *bufptr++ = (char)(source >> 8); + *bufptr++ = (char)(source); + + rem -= 255; + base += 255 * 2; + source += 255 * 2; + } else { + *bufptr++ = rem; + *bufptr++ = (char)(source >> 16); + *bufptr++ = (char)(source >> 8); + *bufptr++ = (char)(source); + + base += rem * 2; + source += rem * 2; + rem = 0; } + } + } + + if (bufptr > dev_info->buf) + ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); + + mutex_unlock(&dev_info->bulk_mutex); - *bufptr++ = 0xAF; - *bufptr++ = 0x6A; - - *bufptr++ = (char)(base >> 16); - *bufptr++ = (char)(base >> 8); - *bufptr++ = (char)(base); - - if (rem > 255) { - *bufptr++ = 255; - *bufptr++ = (char)(source >> 16); - *bufptr++ = (char)(source >> 8); - *bufptr++ = (char)(source); - - rem -= 255; - base += 255 * 2; - source += 255 * 2; - - } else { - *bufptr++ = rem; - *bufptr++ = (char)(source >> 16); - *bufptr++ = (char)(source >> 8); - *bufptr++ = (char)(source); - - base += rem * 2; - source += rem * 2; - rem = 0; - } - } - } - - if (bufptr > dev_info->buf) - ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); - - mutex_unlock(&dev_info->bulk_mutex); - return 1; - + } static int @@ -582,7 +588,8 @@ static void dlfb_imageblit(struct fb_info *info, const struct fb_image *image) /* 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); */ } -static void dlfb_fillrect(struct fb_info *info, const struct fb_fillrect *region) +static void dlfb_fillrect(struct fb_info *info, + const struct fb_fillrect *region) { unsigned char red, green, blue; @@ -602,7 +609,6 @@ static int dlfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) struct dlfb_data *dev_info = info->par; struct dloarea *area = NULL; - if (cmd == 0xAD) { char *edid = (char *)arg; @@ -617,7 +623,6 @@ static int dlfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) area = (struct dloarea *)arg; - if (area->x < 0) area->x = 0; @@ -640,17 +645,17 @@ static int dlfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) image_blit(dev_info, area->x, area->y, area->w, area->h, info->screen_base); swapfb(dev_info); - } - else if (cmd == 0xAB) { + } else if (cmd == 0xAB) { if (area->x2 < 0) - area->x2 = 0; + area->x2 = 0; if (area->y2 < 0) - area->y2 = 0; + area->y2 = 0; copyarea(dev_info, - area->x2, area->y2, area->x, area->y, area->w, area->h); + area->x2, area->y2, area->x, area->y, area->w, + area->h); } return 0; } @@ -699,8 +704,7 @@ static int dlfb_blank(int blank_mode, struct fb_info *info) bufptr = dlfb_set_register(bufptr, 0xFF, 0x00); if (blank_mode != FB_BLANK_UNBLANK) { bufptr = dlfb_set_register(bufptr, 0x1F, 0x01); - } - else { + } else { bufptr = dlfb_set_register(bufptr, 0x1F, 0x00); } bufptr = dlfb_set_register(bufptr, 0xFF, 0xFF); @@ -778,14 +782,16 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id) fb_parse_edid(dev_info->edid, &info->var); printk("EDID XRES %d YRES %d\n", info->var.xres, info->var.yres); - if (info->var.xres == 0 || info->var.yres == 0) { + + if (dlfb_set_video_mode(dev_info, info->var.xres, info->var.yres) != 0) { info->var.xres = 800; info->var.yres = 480; + 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) - goto out; - printk("found valid mode...%d\n", info->var.pixclock); info->pseudo_palette = info->par; @@ -837,9 +843,9 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id) info->fix.smem_len = PAGE_ALIGN(dev_info->screen_size); 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)); + } 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; @@ -858,13 +864,13 @@ 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); diff --git a/recipes/libdlo/kernel-module-udlfb/udlfb.h b/recipes/libdlo/kernel-module-udlfb/udlfb.h index d587088913..08bd671204 100644 --- a/recipes/libdlo/kernel-module-udlfb/udlfb.h +++ b/recipes/libdlo/kernel-module-udlfb/udlfb.h @@ -1,11 +1,15 @@ -#define MAX_VMODES 4 -#define FB_BPP 16 +#ifndef UDLFB_H +#define UDLFB_H -#define STD_CHANNEL "\x57\xCD\xDC\xA7\x1C\x88\x5E\x15\x60\xFE\xC6\x97\x16\x3D\x47\xF2" +#define MAX_VMODES 4 +#define FB_BPP 16 -// as libdlo -#define BUF_HIGH_WATER_MARK 1024 -#define BUF_SIZE 64*1024 +#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; @@ -28,7 +32,6 @@ struct dlfb_data { }; struct dlfb_video_mode { - uint8_t col; uint32_t hclock; uint32_t vclock; @@ -37,17 +40,14 @@ struct dlfb_video_mode { uint8_t unknown2[6]; uint16_t yres; uint8_t unknown3[4]; - } __attribute__ ((__packed__)); -struct dlfb_video_mode dlfb_video_modes[MAX_VMODES]; +static 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 void dlfb_edid(struct dlfb_data *dev_info) @@ -57,20 +57,19 @@ static void dlfb_edid(struct dlfb_data *dev_info) 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]; - } + 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; init_completion(&dev_info->done); @@ -85,12 +84,10 @@ static int dlfb_bulk_msg(struct dlfb_data *dev_info, int len) } return dev_info->tx_urb->actual_length; - } -void dlfb_init_modes(void) +static 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); @@ -126,24 +123,20 @@ void dlfb_init_modes(void) 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) +static 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) +static 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; @@ -156,14 +149,14 @@ 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->base16d = 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) + /* set encryption key (null) */ memcpy(dev_info->buf, STD_CHANNEL, 16); ret = usb_control_msg(dev_info->udev, @@ -172,13 +165,13 @@ int dlfb_set_video_mode(struct dlfb_data *dev_info, int width, int height) dev_info->buf, 16, 0); printk("ret control msg 1 (STD_CHANNEL): %d\n", ret); - // set registers + /* set registers */ bufptr = dlfb_set_register(bufptr, 0xFF, 0x00); - // set color depth + /* set color depth */ bufptr = dlfb_set_register(bufptr, 0x00, 0x00); - // set addresses + /* set addresses */ bufptr = dlfb_set_register(bufptr, 0x20, (char)(dev_info->base16 >> 16)); @@ -199,24 +192,23 @@ int dlfb_set_video_mode(struct dlfb_data *dev_info, int width, int height) 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++) { + /* 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 + /* blank */ bufptr = dlfb_set_register(bufptr, 0x1F, 0x00); - // end registers + /* end registers */ bufptr = dlfb_set_register(bufptr, 0xFF, 0xFF); - // send + /* send */ ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); printk("ret bulk 2: %d %d\n", ret, bufptr - dev_info->buf); - // flush + /* flush */ ret = dlfb_bulk_msg(dev_info, 0); printk("ret bulk 3: %d\n", ret); @@ -229,3 +221,5 @@ int dlfb_set_video_mode(struct dlfb_data *dev_info, int width, int height) return -1; } + +#endif |