forked from Minki/linux
fb: fix au1100fb bitrot.
Removes some bitrot from the au1100fb driver and fix it up so it works again. Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This commit is contained in:
Manuel Lauss
Florian Tobias Schandinat
parent
8b53b7fb57
commit
d121c3f3ce
@ -110,12 +110,6 @@ static struct fb_var_screeninfo au1100fb_var __devinitdata = {
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.vmode = FB_VMODE_NONINTERLACED,
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};
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static struct au1100fb_drv_info drv_info;
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static int nocursor = 0;
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module_param(nocursor, int, 0644);
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MODULE_PARM_DESC(nocursor, "cursor enable/disable");
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/* fb_blank
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* Blank the screen. Depending on the mode, the screen will be
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* activated with the backlight color, or desactivated
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@ -132,7 +126,7 @@ static int au1100fb_fb_blank(int blank_mode, struct fb_info *fbi)
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/* Turn on panel */
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fbdev->regs->lcd_control |= LCD_CONTROL_GO;
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#ifdef CONFIG_MIPS_PB1100
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if (drv_info.panel_idx == 1) {
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if (fbdev->panel_idx == 1) {
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au_writew(au_readw(PB1100_G_CONTROL)
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| (PB1100_G_CONTROL_BL | PB1100_G_CONTROL_VDD),
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PB1100_G_CONTROL);
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@ -147,7 +141,7 @@ static int au1100fb_fb_blank(int blank_mode, struct fb_info *fbi)
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/* Turn off panel */
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fbdev->regs->lcd_control &= ~LCD_CONTROL_GO;
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#ifdef CONFIG_MIPS_PB1100
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if (drv_info.panel_idx == 1) {
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if (fbdev->panel_idx == 1) {
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au_writew(au_readw(PB1100_G_CONTROL)
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& ~(PB1100_G_CONTROL_BL | PB1100_G_CONTROL_VDD),
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PB1100_G_CONTROL);
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@ -428,17 +422,6 @@ int au1100fb_fb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
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return 0;
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}
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/* fb_cursor
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* Used to disable cursor drawing...
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*/
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int au1100fb_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
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{
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if (nocursor)
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return 0;
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else
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return -EINVAL; /* just to force soft_cursor() call */
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}
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static struct fb_ops au1100fb_ops =
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{
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.owner = THIS_MODULE,
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@ -450,13 +433,53 @@ static struct fb_ops au1100fb_ops =
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.fb_imageblit = cfb_imageblit,
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.fb_rotate = au1100fb_fb_rotate,
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.fb_mmap = au1100fb_fb_mmap,
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.fb_cursor = au1100fb_fb_cursor,
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};
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/*-------------------------------------------------------------------------*/
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/* AU1100 LCD controller device driver */
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static int au1100fb_setup(struct au1100fb_device *fbdev)
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{
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char *this_opt, *options;
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int num_panels = ARRAY_SIZE(known_lcd_panels);
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if (num_panels <= 0) {
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print_err("No LCD panels supported by driver!");
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return -ENODEV;
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}
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if (fb_get_options(DRIVER_NAME, &options))
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return -ENODEV;
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if (!options)
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return -ENODEV;
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while ((this_opt = strsep(&options, ",")) != NULL) {
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/* Panel option */
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if (!strncmp(this_opt, "panel:", 6)) {
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int i;
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this_opt += 6;
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for (i = 0; i < num_panels; i++) {
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if (!strncmp(this_opt, known_lcd_panels[i].name,
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strlen(this_opt))) {
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fbdev->panel = &known_lcd_panels[i];
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fbdev->panel_idx = i;
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break;
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}
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}
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if (i >= num_panels) {
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print_warn("Panel '%s' not supported!", this_opt);
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return -ENODEV;
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}
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}
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/* Unsupported option */
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else
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print_warn("Unsupported option \"%s\"", this_opt);
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}
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print_info("Panel=%s", fbdev->panel->name);
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return 0;
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}
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static int __devinit au1100fb_drv_probe(struct platform_device *dev)
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{
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@ -465,22 +488,21 @@ static int __devinit au1100fb_drv_probe(struct platform_device *dev)
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unsigned long page;
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u32 sys_clksrc;
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if (!dev)
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return -EINVAL;
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/* Allocate new device private */
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if (!(fbdev = kzalloc(sizeof(struct au1100fb_device), GFP_KERNEL))) {
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fbdev = kzalloc(sizeof(struct au1100fb_device), GFP_KERNEL);
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if (!fbdev) {
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print_err("fail to allocate device private record");
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return -ENOMEM;
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}
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fbdev->panel = &known_lcd_panels[drv_info.panel_idx];
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if (au1100fb_setup(fbdev))
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goto failed;
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platform_set_drvdata(dev, (void *)fbdev);
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/* Allocate region for our registers and map them */
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if (!(regs_res = platform_get_resource(to_platform_device(dev),
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IORESOURCE_MEM, 0))) {
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regs_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
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if (!regs_res) {
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print_err("fail to retrieve registers resource");
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return -EFAULT;
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}
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@ -500,13 +522,11 @@ static int __devinit au1100fb_drv_probe(struct platform_device *dev)
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print_dbg("Register memory map at %p", fbdev->regs);
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print_dbg("phys=0x%08x, size=%d", fbdev->regs_phys, fbdev->regs_len);
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/* Allocate the framebuffer to the maximum screen size * nbr of video buffers */
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fbdev->fb_len = fbdev->panel->xres * fbdev->panel->yres *
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(fbdev->panel->bpp >> 3) * AU1100FB_NBR_VIDEO_BUFFERS;
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fbdev->fb_mem = dma_alloc_coherent(dev, PAGE_ALIGN(fbdev->fb_len),
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fbdev->fb_mem = dma_alloc_coherent(&dev->dev, PAGE_ALIGN(fbdev->fb_len),
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&fbdev->fb_phys, GFP_KERNEL);
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if (!fbdev->fb_mem) {
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print_err("fail to allocate frambuffer (size: %dK))",
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@ -525,7 +545,7 @@ static int __devinit au1100fb_drv_probe(struct platform_device *dev)
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page < PAGE_ALIGN((unsigned long)fbdev->fb_mem + fbdev->fb_len);
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page += PAGE_SIZE) {
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#if CONFIG_DMA_NONCOHERENT
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SetPageReserved(virt_to_page(CAC_ADDR(page)));
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SetPageReserved(virt_to_page(CAC_ADDR((void *)page)));
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#else
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SetPageReserved(virt_to_page(page));
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#endif
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@ -578,7 +598,8 @@ failed:
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release_mem_region(fbdev->regs_phys, fbdev->regs_len);
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}
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if (fbdev->fb_mem) {
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dma_free_noncoherent(dev, fbdev->fb_len, fbdev->fb_mem, fbdev->fb_phys);
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dma_free_noncoherent(&dev->dev, fbdev->fb_len, fbdev->fb_mem,
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fbdev->fb_phys);
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}
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if (fbdev->info.cmap.len != 0) {
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fb_dealloc_cmap(&fbdev->info.cmap);
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@ -608,7 +629,8 @@ int au1100fb_drv_remove(struct platform_device *dev)
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release_mem_region(fbdev->regs_phys, fbdev->regs_len);
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dma_free_coherent(dev, PAGE_ALIGN(fbdev->fb_len), fbdev->fb_mem, fbdev->fb_phys);
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dma_free_coherent(&dev->dev, PAGE_ALIGN(fbdev->fb_len), fbdev->fb_mem,
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fbdev->fb_phys);
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fb_dealloc_cmap(&fbdev->info.cmap);
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kfree(fbdev->info.pseudo_palette);
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@ -675,101 +697,18 @@ static struct platform_driver au1100fb_driver = {
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.resume = au1100fb_drv_resume,
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};
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/*-------------------------------------------------------------------------*/
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/* Kernel driver */
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int au1100fb_setup(char *options)
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static int __init au1100fb_load(void)
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{
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char* this_opt;
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int num_panels = ARRAY_SIZE(known_lcd_panels);
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char* mode = NULL;
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int panel_idx = 0;
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if (num_panels <= 0) {
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print_err("No LCD panels supported by driver!");
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return -EFAULT;
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}
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if (options) {
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while ((this_opt = strsep(&options,",")) != NULL) {
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/* Panel option */
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if (!strncmp(this_opt, "panel:", 6)) {
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int i;
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this_opt += 6;
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for (i = 0; i < num_panels; i++) {
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if (!strncmp(this_opt,
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known_lcd_panels[i].name,
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strlen(this_opt))) {
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panel_idx = i;
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break;
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}
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}
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if (i >= num_panels) {
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print_warn("Panel %s not supported!", this_opt);
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}
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}
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if (!strncmp(this_opt, "nocursor", 8)) {
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this_opt += 8;
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nocursor = 1;
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print_info("Cursor disabled");
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}
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/* Mode option (only option that start with digit) */
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else if (isdigit(this_opt[0])) {
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mode = kstrdup(this_opt, GFP_KERNEL);
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if (!mode) {
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print_err("memory allocation failed");
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return -ENOMEM;
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}
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}
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/* Unsupported option */
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else {
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print_warn("Unsupported option \"%s\"", this_opt);
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}
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}
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}
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drv_info.panel_idx = panel_idx;
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drv_info.opt_mode = mode;
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print_info("Panel=%s Mode=%s",
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known_lcd_panels[drv_info.panel_idx].name,
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drv_info.opt_mode ? drv_info.opt_mode : "default");
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return 0;
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}
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int __init au1100fb_init(void)
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{
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char* options;
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int ret;
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print_info("" DRIVER_DESC "");
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memset(&drv_info, 0, sizeof(drv_info));
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if (fb_get_options(DRIVER_NAME, &options))
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return -ENODEV;
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/* Setup driver with options */
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ret = au1100fb_setup(options);
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if (ret < 0) {
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print_err("Fail to setup driver");
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return ret;
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}
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return platform_driver_register(&au1100fb_driver);
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}
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void __exit au1100fb_cleanup(void)
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static void __exit au1100fb_unload(void)
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{
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platform_driver_unregister(&au1100fb_driver);
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kfree(drv_info.opt_mode);
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}
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module_init(au1100fb_init);
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module_exit(au1100fb_cleanup);
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module_init(au1100fb_load);
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module_exit(au1100fb_unload);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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@ -108,6 +108,7 @@ struct au1100fb_device {
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unsigned char* fb_mem; /* FrameBuffer memory map */
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size_t fb_len;
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dma_addr_t fb_phys;
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int panel_idx;
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};
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/********************************************************************/
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@ -364,11 +365,6 @@ static struct au1100fb_panel known_lcd_panels[] =
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},
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};
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struct au1100fb_drv_info {
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int panel_idx;
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char *opt_mode;
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};
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/********************************************************************/
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/* Inline helpers */
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