X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fvideo%2Fs3c2410fb.c;h=f0598961c6b04be94d20fdae77e5281f7096f6cf;hb=eb6d42ea17329745d7d712d3aa3bb84ec1da9c85;hp=b3c31d9dc591bc1c8e4780e9e086ec5254834a32;hpb=8b85eaadd5b8d3786996bd74c73aff54a92ec456;p=linux-2.6 diff --git a/drivers/video/s3c2410fb.c b/drivers/video/s3c2410fb.c index b3c31d9dc5..f0598961c6 100644 --- a/drivers/video/s3c2410fb.c +++ b/drivers/video/s3c2410fb.c @@ -1,75 +1,15 @@ -/* - * linux/drivers/video/s3c2410fb.c - * Copyright (c) Arnaud Patard, Ben Dooks +/* linux/drivers/video/s3c2410fb.c + * Copyright (c) 2004,2005 Arnaud Patard + * Copyright (c) 2004-2008 Ben Dooks + * + * S3C2410 LCD Framebuffer Driver * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for * more details. * - * S3C2410 LCD Controller Frame Buffer Driver - * based on skeletonfb.c, sa1100fb.c and others - * - * ChangeLog - * 2005-04-07: Arnaud Patard - * - u32 state -> pm_message_t state - * - S3C2410_{VA,SZ}_LCD -> S3C24XX - * - * 2005-03-15: Arnaud Patard - * - Removed the ioctl - * - use readl/writel instead of __raw_writel/__raw_readl - * - * 2004-12-04: Arnaud Patard - * - Added the possibility to set on or off the - * debugging messages - * - Replaced 0 and 1 by on or off when reading the - * /sys files - * - * 2005-03-23: Ben Dooks - * - added non 16bpp modes - * - updated platform information for range of x/y/bpp - * - add code to ensure palette is written correctly - * - add pixel clock divisor control - * - * 2004-11-11: Arnaud Patard - * - Removed the use of currcon as it no more exists - * - Added LCD power sysfs interface - * - * 2004-11-03: Ben Dooks - * - minor cleanups - * - add suspend/resume support - * - s3c2410fb_setcolreg() not valid in >8bpp modes - * - removed last CONFIG_FB_S3C2410_FIXED - * - ensure lcd controller stopped before cleanup - * - added sysfs interface for backlight power - * - added mask for gpio configuration - * - ensured IRQs disabled during GPIO configuration - * - disable TPAL before enabling video - * - * 2004-09-20: Arnaud Patard - * - Suppress command line options - * - * 2004-09-15: Arnaud Patard - * - code cleanup - * - * 2004-09-07: Arnaud Patard - * - Renamed from h1940fb.c to s3c2410fb.c - * - Add support for different devices - * - Backlight support - * - * 2004-09-05: Herbert Pötzl - * - added clock (de-)allocation code - * - added fixem fbmem option - * - * 2004-07-27: Arnaud Patard - * - code cleanup - * - added a forgotten return in h1940fb_init - * - * 2004-07-19: Herbert Pötzl - * - code cleanup and extended debugging - * - * 2004-07-15: Arnaud Patard - * - First version - */ + * Driver based on skeletonfb.c, sa1100fb.c and others. +*/ #include #include @@ -110,6 +50,11 @@ static int debug = 0; /* useful functions */ +static int is_s3c2412(struct s3c2410fb_info *fbi) +{ + return (fbi->drv_type == DRV_S3C2412); +} + /* s3c2410fb_set_lcdaddr * * initialise lcd controller address pointers @@ -425,9 +370,9 @@ static void s3c2410fb_activate_var(struct fb_info *info) struct fb_var_screeninfo *var = &info->var; int clkdiv = s3c2410fb_calc_pixclk(fbi, var->pixclock) / 2; - dprintk("%s: var->xres = %d\n", __FUNCTION__, var->xres); - dprintk("%s: var->yres = %d\n", __FUNCTION__, var->yres); - dprintk("%s: var->bpp = %d\n", __FUNCTION__, var->bits_per_pixel); + dprintk("%s: var->xres = %d\n", __func__, var->xres); + dprintk("%s: var->yres = %d\n", __func__, var->yres); + dprintk("%s: var->bpp = %d\n", __func__, var->bits_per_pixel); if (type == S3C2410_LCDCON1_TFT) { s3c2410fb_calculate_tft_lcd_regs(info, &fbi->regs); @@ -501,7 +446,7 @@ static void schedule_palette_update(struct s3c2410fb_info *fbi, { unsigned long flags; unsigned long irqen; - void __iomem *regs = fbi->io; + void __iomem *irq_base = fbi->irq_base; local_irq_save(flags); @@ -511,9 +456,9 @@ static void schedule_palette_update(struct s3c2410fb_info *fbi, fbi->palette_ready = 1; /* enable IRQ */ - irqen = readl(regs + S3C2410_LCDINTMSK); + irqen = readl(irq_base + S3C24XX_LCDINTMSK); irqen &= ~S3C2410_LCDINT_FRSYNC; - writel(irqen, regs + S3C2410_LCDINTMSK); + writel(irqen, irq_base + S3C24XX_LCDINTMSK); } local_irq_restore(flags); @@ -575,6 +520,27 @@ static int s3c2410fb_setcolreg(unsigned regno, return 0; } +/* s3c2410fb_lcd_enable + * + * shutdown the lcd controller + */ +static void s3c2410fb_lcd_enable(struct s3c2410fb_info *fbi, int enable) +{ + unsigned long flags; + + local_irq_save(flags); + + if (enable) + fbi->regs.lcdcon1 |= S3C2410_LCDCON1_ENVID; + else + fbi->regs.lcdcon1 &= ~S3C2410_LCDCON1_ENVID; + + writel(fbi->regs.lcdcon1, fbi->io + S3C2410_LCDCON1); + + local_irq_restore(flags); +} + + /* * s3c2410fb_blank * @blank_mode: the blank mode we want. @@ -584,9 +550,6 @@ static int s3c2410fb_setcolreg(unsigned regno, * blanking succeeded, != 0 if un-/blanking failed due to e.g. a * video mode which doesn't support it. Implements VESA suspend * and powerdown modes on hardware that supports disabling hsync/vsync: - * blank_mode == 2: suspend vsync - * blank_mode == 3: suspend hsync - * blank_mode == 4: powerdown * * Returns negative errno on error, or zero on success. * @@ -594,15 +557,23 @@ static int s3c2410fb_setcolreg(unsigned regno, static int s3c2410fb_blank(int blank_mode, struct fb_info *info) { struct s3c2410fb_info *fbi = info->par; - void __iomem *regs = fbi->io; + void __iomem *tpal_reg = fbi->io; dprintk("blank(mode=%d, info=%p)\n", blank_mode, info); + tpal_reg += is_s3c2412(fbi) ? S3C2412_TPAL : S3C2410_TPAL; + + if (blank_mode == FB_BLANK_POWERDOWN) { + s3c2410fb_lcd_enable(fbi, 0); + } else { + s3c2410fb_lcd_enable(fbi, 1); + } + if (blank_mode == FB_BLANK_UNBLANK) - writel(0x0, regs + S3C2410_TPAL); + writel(0x0, tpal_reg); else { dprintk("setting TPAL to output 0x000000\n"); - writel(S3C2410_TPAL_EN, regs + S3C2410_TPAL); + writel(S3C2410_TPAL_EN, tpal_reg); } return 0; @@ -663,7 +634,7 @@ static int __init s3c2410fb_map_video_memory(struct fb_info *info) dma_addr_t map_dma; unsigned map_size = PAGE_ALIGN(info->fix.smem_len); - dprintk("map_video_memory(fbi=%p)\n", fbi); + dprintk("map_video_memory(fbi=%p) map_size %u\n", fbi, map_size); info->screen_base = dma_alloc_writecombine(fbi->dev, map_size, &map_dma, GFP_KERNEL); @@ -672,7 +643,7 @@ static int __init s3c2410fb_map_video_memory(struct fb_info *info) /* prevent initial garbage on screen */ dprintk("map_video_memory: clear %p:%08x\n", info->screen_base, map_size); - memset(info->screen_base, 0xf0, map_size); + memset(info->screen_base, 0x00, map_size); info->fix.smem_start = map_dma; @@ -709,6 +680,16 @@ static int s3c2410fb_init_registers(struct fb_info *info) struct s3c2410fb_mach_info *mach_info = fbi->dev->platform_data; unsigned long flags; void __iomem *regs = fbi->io; + void __iomem *tpal; + void __iomem *lpcsel; + + if (is_s3c2412(fbi)) { + tpal = regs + S3C2412_TPAL; + lpcsel = regs + S3C2412_TCONSEL; + } else { + tpal = regs + S3C2410_TPAL; + lpcsel = regs + S3C2410_LPCSEL; + } /* Initialise LCD with values from haret */ @@ -724,12 +705,12 @@ static int s3c2410fb_init_registers(struct fb_info *info) local_irq_restore(flags); dprintk("LPCSEL = 0x%08lx\n", mach_info->lpcsel); - writel(mach_info->lpcsel, regs + S3C2410_LPCSEL); + writel(mach_info->lpcsel, lpcsel); - dprintk("replacing TPAL %08x\n", readl(regs + S3C2410_TPAL)); + dprintk("replacing TPAL %08x\n", readl(tpal)); /* ensure temporary palette disabled */ - writel(0x00, regs + S3C2410_TPAL); + writel(0x00, tpal); return 0; } @@ -763,15 +744,15 @@ static void s3c2410fb_write_palette(struct s3c2410fb_info *fbi) static irqreturn_t s3c2410fb_irq(int irq, void *dev_id) { struct s3c2410fb_info *fbi = dev_id; - void __iomem *regs = fbi->io; - unsigned long lcdirq = readl(regs + S3C2410_LCDINTPND); + void __iomem *irq_base = fbi->irq_base; + unsigned long lcdirq = readl(irq_base + S3C24XX_LCDINTPND); if (lcdirq & S3C2410_LCDINT_FRSYNC) { if (fbi->palette_ready) s3c2410fb_write_palette(fbi); - writel(S3C2410_LCDINT_FRSYNC, regs + S3C2410_LCDINTPND); - writel(S3C2410_LCDINT_FRSYNC, regs + S3C2410_LCDSRCPND); + writel(S3C2410_LCDINT_FRSYNC, irq_base + S3C24XX_LCDINTPND); + writel(S3C2410_LCDINT_FRSYNC, irq_base + S3C24XX_LCDSRCPND); } return IRQ_HANDLED; @@ -779,7 +760,8 @@ static irqreturn_t s3c2410fb_irq(int irq, void *dev_id) static char driver_name[] = "s3c2410fb"; -static int __init s3c2410fb_probe(struct platform_device *pdev) +static int __init s3c24xxfb_probe(struct platform_device *pdev, + enum s3c_drv_type drv_type) { struct s3c2410fb_info *info; struct s3c2410fb_display *display; @@ -799,6 +781,12 @@ static int __init s3c2410fb_probe(struct platform_device *pdev) return -EINVAL; } + if (mach_info->default_display >= mach_info->num_displays) { + dev_err(&pdev->dev, "default is %d but only %d displays\n", + mach_info->default_display, mach_info->num_displays); + return -EINVAL; + } + display = mach_info->displays + mach_info->default_display; irq = platform_get_irq(pdev, 0); @@ -815,6 +803,7 @@ static int __init s3c2410fb_probe(struct platform_device *pdev) info = fbinfo->par; info->dev = &pdev->dev; + info->drv_type = drv_type; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (res == NULL) { @@ -838,6 +827,8 @@ static int __init s3c2410fb_probe(struct platform_device *pdev) goto release_mem; } + info->irq_base = info->io + ((drv_type == DRV_S3C2412) ? S3C2412_LCDINTBASE : S3C2410_LCDINTBASE); + dprintk("devinit\n"); strcpy(fbinfo->fix.id, driver_name); @@ -921,7 +912,10 @@ static int __init s3c2410fb_probe(struct platform_device *pdev) } /* create device files */ - device_create_file(&pdev->dev, &dev_attr_debug); + ret = device_create_file(&pdev->dev, &dev_attr_debug); + if (ret) { + printk(KERN_ERR "failed to add debug attribute\n"); + } printk(KERN_INFO "fb%d: %s frame buffer device\n", fbinfo->node, fbinfo->fix.id); @@ -946,22 +940,17 @@ dealloc_fb: return ret; } -/* s3c2410fb_stop_lcd - * - * shutdown the lcd controller - */ -static void s3c2410fb_stop_lcd(struct s3c2410fb_info *fbi) +static int __init s3c2410fb_probe(struct platform_device *pdev) { - unsigned long flags; - - local_irq_save(flags); - - fbi->regs.lcdcon1 &= ~S3C2410_LCDCON1_ENVID; - writel(fbi->regs.lcdcon1, fbi->io + S3C2410_LCDCON1); + return s3c24xxfb_probe(pdev, DRV_S3C2410); +} - local_irq_restore(flags); +static int __init s3c2412fb_probe(struct platform_device *pdev) +{ + return s3c24xxfb_probe(pdev, DRV_S3C2412); } + /* * Cleanup */ @@ -973,7 +962,7 @@ static int s3c2410fb_remove(struct platform_device *pdev) unregister_framebuffer(fbinfo); - s3c2410fb_stop_lcd(info); + s3c2410fb_lcd_enable(info, 0); msleep(1); s3c2410fb_unmap_video_memory(fbinfo); @@ -1006,7 +995,7 @@ static int s3c2410fb_suspend(struct platform_device *dev, pm_message_t state) struct fb_info *fbinfo = platform_get_drvdata(dev); struct s3c2410fb_info *info = fbinfo->par; - s3c2410fb_stop_lcd(info); + s3c2410fb_lcd_enable(info, 0); /* sleep before disabling the clock, we need to ensure * the LCD DMA engine is not going to get back on the bus @@ -1047,14 +1036,31 @@ static struct platform_driver s3c2410fb_driver = { }, }; +static struct platform_driver s3c2412fb_driver = { + .probe = s3c2412fb_probe, + .remove = s3c2410fb_remove, + .suspend = s3c2410fb_suspend, + .resume = s3c2410fb_resume, + .driver = { + .name = "s3c2412-lcd", + .owner = THIS_MODULE, + }, +}; + int __init s3c2410fb_init(void) { - return platform_driver_register(&s3c2410fb_driver); + int ret = platform_driver_register(&s3c2410fb_driver); + + if (ret == 0) + ret = platform_driver_register(&s3c2412fb_driver);; + + return ret; } static void __exit s3c2410fb_cleanup(void) { platform_driver_unregister(&s3c2410fb_driver); + platform_driver_unregister(&s3c2412fb_driver); } module_init(s3c2410fb_init); @@ -1064,3 +1070,5 @@ MODULE_AUTHOR("Arnaud Patard , " "Ben Dooks "); MODULE_DESCRIPTION("Framebuffer driver for the s3c2410"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:s3c2410-lcd"); +MODULE_ALIAS("platform:s3c2412-lcd");