diff options
| -rw-r--r-- | drivers/video/pxafb.c | 132 | ||||
| -rw-r--r-- | drivers/video/pxafb.h | 46 |
2 files changed, 95 insertions, 83 deletions
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c index d97dc9383d4..4e8f68b7c5b 100644 --- a/drivers/video/pxafb.c +++ b/drivers/video/pxafb.c @@ -361,7 +361,6 @@ static int pxafb_set_par(struct fb_info *info) { struct pxafb_info *fbi = (struct pxafb_info *)info; struct fb_var_screeninfo *var = &info->var; - unsigned long palette_mem_size; if (var->bits_per_pixel == 16) fbi->fb.fix.visual = FB_VISUAL_TRUECOLOR; @@ -384,13 +383,7 @@ static int pxafb_set_par(struct fb_info *info) fbi->palette_size = var->bits_per_pixel == 1 ? 4 : 1 << var->bits_per_pixel; - if ((fbi->lccr4 & LCCR4_PAL_FOR_MASK) == LCCR4_PAL_FOR_0) - palette_mem_size = fbi->palette_size * sizeof(u16); - else - palette_mem_size = fbi->palette_size * sizeof(u32); - - fbi->palette_cpu = (u16 *)(fbi->map_cpu + PAGE_SIZE - palette_mem_size); - fbi->palette_dma = fbi->map_dma + PAGE_SIZE - palette_mem_size; + fbi->palette_cpu = (u16 *)&fbi->dma_buff->palette[0]; /* * Set (any) board control register to handle new color depth @@ -546,6 +539,48 @@ unsigned long pxafb_get_hsync_time(struct device *dev) } EXPORT_SYMBOL(pxafb_get_hsync_time); +static int setup_frame_dma(struct pxafb_info *fbi, int dma, int pal, + unsigned int offset, size_t size) +{ + struct pxafb_dma_descriptor *dma_desc, *pal_desc; + unsigned int dma_desc_off, pal_desc_off; + + if (dma < 0 || dma >= DMA_MAX) + return -EINVAL; + + dma_desc = &fbi->dma_buff->dma_desc[dma]; + dma_desc_off = offsetof(struct pxafb_dma_buff, dma_desc[dma]); + + dma_desc->fsadr = fbi->screen_dma + offset; + dma_desc->fidr = 0; + dma_desc->ldcmd = size; + + if (pal < 0 || pal >= PAL_MAX) { + dma_desc->fdadr = fbi->dma_buff_phys + dma_desc_off; + fbi->fdadr[dma] = fbi->dma_buff_phys + dma_desc_off; + } else { + pal_desc = &fbi->dma_buff->pal_desc[dma]; + pal_desc_off = offsetof(struct pxafb_dma_buff, dma_desc[pal]); + + pal_desc->fsadr = fbi->dma_buff_phys + pal * PALETTE_SIZE; + pal_desc->fidr = 0; + + if ((fbi->lccr4 & LCCR4_PAL_FOR_MASK) == LCCR4_PAL_FOR_0) + pal_desc->ldcmd = fbi->palette_size * sizeof(u16); + else + pal_desc->ldcmd = fbi->palette_size * sizeof(u32); + + pal_desc->ldcmd |= LDCMD_PAL; + + /* flip back and forth between palette and frame buffer */ + pal_desc->fdadr = fbi->dma_buff_phys + dma_desc_off; + dma_desc->fdadr = fbi->dma_buff_phys + pal_desc_off; + fbi->fdadr[dma] = fbi->dma_buff_phys + dma_desc_off; + } + + return 0; +} + /* * pxafb_activate_var(): * Configures LCD Controller based on entries in var parameter. @@ -557,6 +592,7 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_lcd_reg new_regs; u_long flags; u_int lines_per_panel, pcd = get_pcd(fbi, var->pixclock); + size_t nbytes; #if DEBUG_VAR if (var->xres < 16 || var->xres > 1024) @@ -634,54 +670,15 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var, /* Update shadow copy atomically */ local_irq_save(flags); - /* setup dma descriptors */ - fbi->dmadesc_fblow_cpu = (struct pxafb_dma_descriptor *) - ((unsigned int)fbi->palette_cpu - 3*16); - fbi->dmadesc_fbhigh_cpu = (struct pxafb_dma_descriptor *) - ((unsigned int)fbi->palette_cpu - 2*16); - fbi->dmadesc_palette_cpu = (struct pxafb_dma_descriptor *) - ((unsigned int)fbi->palette_cpu - 1*16); - - fbi->dmadesc_fblow_dma = fbi->palette_dma - 3*16; - fbi->dmadesc_fbhigh_dma = fbi->palette_dma - 2*16; - fbi->dmadesc_palette_dma = fbi->palette_dma - 1*16; - -#define BYTES_PER_PANEL (lines_per_panel * fbi->fb.fix.line_length) - - /* populate descriptors */ - fbi->dmadesc_fblow_cpu->fdadr = fbi->dmadesc_fblow_dma; - fbi->dmadesc_fblow_cpu->fsadr = fbi->screen_dma + BYTES_PER_PANEL; - fbi->dmadesc_fblow_cpu->fidr = 0; - fbi->dmadesc_fblow_cpu->ldcmd = BYTES_PER_PANEL; - - fbi->fdadr1 = fbi->dmadesc_fblow_dma; /* only used in dual-panel mode */ - - fbi->dmadesc_fbhigh_cpu->fsadr = fbi->screen_dma; - fbi->dmadesc_fbhigh_cpu->fidr = 0; - fbi->dmadesc_fbhigh_cpu->ldcmd = BYTES_PER_PANEL; - - fbi->dmadesc_palette_cpu->fsadr = fbi->palette_dma; - fbi->dmadesc_palette_cpu->fidr = 0; - if ((fbi->lccr4 & LCCR4_PAL_FOR_MASK) == LCCR4_PAL_FOR_0) - fbi->dmadesc_palette_cpu->ldcmd = fbi->palette_size * - sizeof(u16); - else - fbi->dmadesc_palette_cpu->ldcmd = fbi->palette_size * - sizeof(u32); - fbi->dmadesc_palette_cpu->ldcmd |= LDCMD_PAL; + nbytes = lines_per_panel * fbi->fb.fix.line_length; - if (var->bits_per_pixel == 16) { - /* palette shouldn't be loaded in true-color mode */ - fbi->dmadesc_fbhigh_cpu->fdadr = fbi->dmadesc_fbhigh_dma; - fbi->fdadr0 = fbi->dmadesc_fbhigh_dma; /* no pal just fbhigh */ - /* init it to something, even though we won't be using it */ - fbi->dmadesc_palette_cpu->fdadr = fbi->dmadesc_palette_dma; - } else { - /* flips back and forth between pal and fbhigh */ - fbi->dmadesc_palette_cpu->fdadr = fbi->dmadesc_fbhigh_dma; - fbi->dmadesc_fbhigh_cpu->fdadr = fbi->dmadesc_palette_dma; - fbi->fdadr0 = fbi->dmadesc_palette_dma; - } + if ((fbi->lccr0 & LCCR0_SDS) == LCCR0_Dual) + setup_frame_dma(fbi, DMA_LOWER, PAL_NONE, nbytes, nbytes); + + if (var->bits_per_pixel >= 16) + setup_frame_dma(fbi, DMA_BASE, PAL_NONE, 0, nbytes); + else + setup_frame_dma(fbi, DMA_BASE, PAL_BASE, 0, nbytes); fbi->reg_lccr0 = new_regs.lccr0; fbi->reg_lccr1 = new_regs.lccr1; @@ -701,8 +698,8 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var, (__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)) + (__raw_readl(fbi->mmio_base + FDADR0) != fbi->fdadr[0]) || + (__raw_readl(fbi->mmio_base + FDADR1) != fbi->fdadr[1])) pxafb_schedule_work(fbi, C_REENABLE); return 0; @@ -777,8 +774,8 @@ static void pxafb_setup_gpio(struct pxafb_info *fbi) static void pxafb_enable_controller(struct pxafb_info *fbi) { pr_debug("pxafb: Enabling LCD controller\n"); - pr_debug("fdadr0 0x%08x\n", (unsigned int) fbi->fdadr0); - pr_debug("fdadr1 0x%08x\n", (unsigned int) fbi->fdadr1); + pr_debug("fdadr0 0x%08x\n", (unsigned int) fbi->fdadr[0]); + pr_debug("fdadr1 0x%08x\n", (unsigned int) fbi->fdadr[1]); pr_debug("reg_lccr0 0x%08x\n", (unsigned int) fbi->reg_lccr0); pr_debug("reg_lccr1 0x%08x\n", (unsigned int) fbi->reg_lccr1); pr_debug("reg_lccr2 0x%08x\n", (unsigned int) fbi->reg_lccr2); @@ -793,8 +790,8 @@ static void pxafb_enable_controller(struct pxafb_info *fbi) __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->fdadr[0], fbi->mmio_base + FDADR0); + __raw_writel(fbi->fdadr[1], fbi->mmio_base + FDADR1); __raw_writel(fbi->reg_lccr0 | LCCR0_ENB, fbi->mmio_base + LCCR0); } @@ -1038,8 +1035,6 @@ static int pxafb_resume(struct platform_device *dev) */ static int __init pxafb_map_video_memory(struct pxafb_info *fbi) { - u_long palette_mem_size; - /* * We reserve one page for the palette, plus the size * of the framebuffer. @@ -1062,14 +1057,9 @@ static int __init pxafb_map_video_memory(struct pxafb_info *fbi) fbi->fb.fix.smem_start = fbi->screen_dma; fbi->palette_size = fbi->fb.var.bits_per_pixel == 8 ? 256 : 16; - if ((fbi->lccr4 & LCCR4_PAL_FOR_MASK) == LCCR4_PAL_FOR_0) - palette_mem_size = fbi->palette_size * sizeof(u16); - else - palette_mem_size = fbi->palette_size * sizeof(u32); - - fbi->palette_cpu = (u16 *)(fbi->map_cpu + PAGE_SIZE - - palette_mem_size); - fbi->palette_dma = fbi->map_dma + PAGE_SIZE - palette_mem_size; + fbi->dma_buff = (void *)fbi->map_cpu; + fbi->dma_buff_phys = fbi->map_dma; + fbi->palette_cpu = (u16 *)&fbi->dma_buff->palette[0]; } return fbi->map_cpu ? 0 : -ENOMEM; diff --git a/drivers/video/pxafb.h b/drivers/video/pxafb.h index c7c561df3b6..b777641c5e7 100644 --- a/drivers/video/pxafb.h +++ b/drivers/video/pxafb.h @@ -37,6 +37,36 @@ struct pxafb_dma_descriptor { unsigned int ldcmd; }; +enum { + PAL_NONE = -1, + PAL_BASE = 0, + PAL_OV1 = 1, + PAL_OV2 = 2, + PAL_MAX, +}; + +enum { + DMA_BASE = 0, + DMA_UPPER = 0, + DMA_LOWER = 1, + DMA_OV1 = 1, + DMA_OV2_Y = 2, + DMA_OV2_Cb = 3, + DMA_OV2_Cr = 4, + DMA_CURSOR = 5, + DMA_CMD = 6, + DMA_MAX, +}; + +/* maximum palette size - 256 entries, each 4 bytes long */ +#define PALETTE_SIZE (256 * 4) + +struct pxafb_dma_buff { + unsigned char palette[PAL_MAX * PALETTE_SIZE]; + struct pxafb_dma_descriptor pal_desc[PAL_MAX]; + struct pxafb_dma_descriptor dma_desc[DMA_MAX]; +}; + struct pxafb_info { struct fb_info fb; struct device *dev; @@ -44,6 +74,10 @@ struct pxafb_info { void __iomem *mmio_base; + struct pxafb_dma_buff *dma_buff; + dma_addr_t dma_buff_phys; + dma_addr_t fdadr[DMA_MAX]; + /* * These are the addresses we mapped * the framebuffer memory region to. @@ -57,20 +91,8 @@ struct pxafb_info { u_char * screen_cpu; /* virtual address of frame buffer */ dma_addr_t screen_dma; /* physical address of frame buffer */ u16 * palette_cpu; /* virtual address of palette memory */ - dma_addr_t palette_dma; /* physical address of palette memory */ u_int palette_size; - /* DMA descriptors */ - struct pxafb_dma_descriptor * dmadesc_fblow_cpu; - dma_addr_t dmadesc_fblow_dma; - struct pxafb_dma_descriptor * dmadesc_fbhigh_cpu; - dma_addr_t dmadesc_fbhigh_dma; - struct pxafb_dma_descriptor * dmadesc_palette_cpu; - dma_addr_t dmadesc_palette_dma; - - dma_addr_t fdadr0; - dma_addr_t fdadr1; - u_int lccr0; u_int lccr3; u_int lccr4; |