diff options
Diffstat (limited to 'drivers/video/pxafb.c')
| -rw-r--r-- | drivers/video/pxafb.c | 94 |
1 files changed, 71 insertions, 23 deletions
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c index f1846c0de93..d97dc9383d4 100644 --- a/drivers/video/pxafb.c +++ b/drivers/video/pxafb.c @@ -687,7 +687,8 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var, fbi->reg_lccr1 = new_regs.lccr1; fbi->reg_lccr2 = new_regs.lccr2; fbi->reg_lccr3 = new_regs.lccr3; - fbi->reg_lccr4 = LCCR4 & (~LCCR4_PAL_FOR_MASK); + fbi->reg_lccr4 = __raw_readl(fbi->mmio_base + LCCR4) & + (~LCCR4_PAL_FOR_MASK); fbi->reg_lccr4 |= (fbi->lccr4 & LCCR4_PAL_FOR_MASK); set_hsync_time(fbi, pcd); local_irq_restore(flags); @@ -696,9 +697,12 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var, * Only update the registers if the controller is enabled * and something has changed. */ - if ((LCCR0 != fbi->reg_lccr0) || (LCCR1 != fbi->reg_lccr1) || - (LCCR2 != fbi->reg_lccr2) || (LCCR3 != fbi->reg_lccr3) || - (FDADR0 != fbi->fdadr0) || (FDADR1 != fbi->fdadr1)) + if ((__raw_readl(fbi->mmio_base + LCCR0) != fbi->reg_lccr0) || + (__raw_readl(fbi->mmio_base + LCCR1) != fbi->reg_lccr1) || + (__raw_readl(fbi->mmio_base + LCCR2) != fbi->reg_lccr2) || + (__raw_readl(fbi->mmio_base + LCCR3) != fbi->reg_lccr3) || + (__raw_readl(fbi->mmio_base + FDADR0) != fbi->fdadr0) || + (__raw_readl(fbi->mmio_base + FDADR1) != fbi->fdadr1)) pxafb_schedule_work(fbi, C_REENABLE); return 0; @@ -784,26 +788,31 @@ static void pxafb_enable_controller(struct pxafb_info *fbi) clk_enable(fbi->clk); /* Sequence from 11.7.10 */ - LCCR3 = fbi->reg_lccr3; - LCCR2 = fbi->reg_lccr2; - LCCR1 = fbi->reg_lccr1; - LCCR0 = fbi->reg_lccr0 & ~LCCR0_ENB; - - FDADR0 = fbi->fdadr0; - FDADR1 = fbi->fdadr1; - LCCR0 |= LCCR0_ENB; + __raw_writel(fbi->reg_lccr3, fbi->mmio_base + LCCR3); + __raw_writel(fbi->reg_lccr2, fbi->mmio_base + LCCR2); + __raw_writel(fbi->reg_lccr1, fbi->mmio_base + LCCR1); + __raw_writel(fbi->reg_lccr0 & ~LCCR0_ENB, fbi->mmio_base + LCCR0); + + __raw_writel(fbi->fdadr0, fbi->mmio_base + FDADR0); + __raw_writel(fbi->fdadr1, fbi->mmio_base + FDADR1); + __raw_writel(fbi->reg_lccr0 | LCCR0_ENB, fbi->mmio_base + LCCR0); } static void pxafb_disable_controller(struct pxafb_info *fbi) { + uint32_t lccr0; + DECLARE_WAITQUEUE(wait, current); set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&fbi->ctrlr_wait, &wait); - LCSR = 0xffffffff; /* Clear LCD Status Register */ - LCCR0 &= ~LCCR0_LDM; /* Enable LCD Disable Done Interrupt */ - LCCR0 |= LCCR0_DIS; /* Disable LCD Controller */ + /* Clear LCD Status Register */ + __raw_writel(0xffffffff, fbi->mmio_base + LCSR); + + lccr0 = __raw_readl(fbi->mmio_base + LCCR0) & ~LCCR0_LDM; + __raw_writel(lccr0, fbi->mmio_base + LCCR0); + __raw_writel(lccr0 | LCCR0_DIS, fbi->mmio_base + LCCR0); schedule_timeout(200 * HZ / 1000); remove_wait_queue(&fbi->ctrlr_wait, &wait); @@ -818,14 +827,15 @@ static void pxafb_disable_controller(struct pxafb_info *fbi) static irqreturn_t pxafb_handle_irq(int irq, void *dev_id) { struct pxafb_info *fbi = dev_id; - unsigned int lcsr = LCSR; + unsigned int lccr0, lcsr = __raw_readl(fbi->mmio_base + LCSR); if (lcsr & LCSR_LDD) { - LCCR0 |= LCCR0_LDM; + lccr0 = __raw_readl(fbi->mmio_base + LCCR0) | LCCR0_LDM; + __raw_writel(lccr0, fbi->mmio_base + LCCR0); wake_up(&fbi->ctrlr_wait); } - LCSR = lcsr; + __raw_writel(lcsr, fbi->mmio_base + LCSR); return IRQ_HANDLED; } @@ -1343,7 +1353,8 @@ static int __init pxafb_probe(struct platform_device *dev) { struct pxafb_info *fbi; struct pxafb_mach_info *inf; - int ret; + struct resource *r; + int irq, ret; dev_dbg(&dev->dev, "pxafb_probe\n"); @@ -1406,19 +1417,47 @@ static int __init pxafb_probe(struct platform_device *dev) goto failed; } + r = platform_get_resource(dev, IORESOURCE_MEM, 0); + if (r == NULL) { + dev_err(&dev->dev, "no I/O memory resource defined\n"); + ret = -ENODEV; + goto failed; + } + + r = request_mem_region(r->start, r->end - r->start + 1, dev->name); + if (r == NULL) { + dev_err(&dev->dev, "failed to request I/O memory\n"); + ret = -EBUSY; + goto failed; + } + + fbi->mmio_base = ioremap(r->start, r->end - r->start + 1); + if (fbi->mmio_base == NULL) { + dev_err(&dev->dev, "failed to map I/O memory\n"); + ret = -EBUSY; + goto failed_free_res; + } + /* Initialize video memory */ ret = pxafb_map_video_memory(fbi); if (ret) { dev_err(&dev->dev, "Failed to allocate video RAM: %d\n", ret); ret = -ENOMEM; - goto failed; + goto failed_free_io; } - ret = request_irq(IRQ_LCD, pxafb_handle_irq, IRQF_DISABLED, "LCD", fbi); + irq = platform_get_irq(dev, 0); + if (irq < 0) { + dev_err(&dev->dev, "no IRQ defined\n"); + ret = -ENODEV; + goto failed_free_mem; + } + + ret = request_irq(irq, pxafb_handle_irq, IRQF_DISABLED, "LCD", fbi); if (ret) { dev_err(&dev->dev, "request_irq failed: %d\n", ret); ret = -EBUSY; - goto failed; + goto failed_free_mem; } /* @@ -1434,7 +1473,7 @@ static int __init pxafb_probe(struct platform_device *dev) if (ret < 0) { dev_err(&dev->dev, "Failed to register framebuffer device: %d\n", ret); - goto failed; + goto failed_free_irq; } #ifdef CONFIG_CPU_FREQ @@ -1453,6 +1492,15 @@ static int __init pxafb_probe(struct platform_device *dev) return 0; +failed_free_irq: + free_irq(irq, fbi); +failed_free_res: + release_mem_region(r->start, r->end - r->start + 1); +failed_free_io: + iounmap(fbi->mmio_base); +failed_free_mem: + dma_free_writecombine(&dev->dev, fbi->map_size, + fbi->map_cpu, fbi->map_dma); failed: platform_set_drvdata(dev, NULL); kfree(fbi); |