diff options
Diffstat (limited to 'drivers/video/sh_mobile_lcdcfb.c')
| -rw-r--r-- | drivers/video/sh_mobile_lcdcfb.c | 76 |
1 files changed, 66 insertions, 10 deletions
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c index 1cb5213c1a0..7f30cb33a20 100644 --- a/drivers/video/sh_mobile_lcdcfb.c +++ b/drivers/video/sh_mobile_lcdcfb.c @@ -31,6 +31,7 @@ #define _LDSR 0x46c #define _LDCNT1R 0x470 #define _LDCNT2R 0x474 +#define _LDRCNTR 0x478 #define _LDDDSR 0x47c #define _LDDWD0R 0x800 #define _LDDRDR 0x840 @@ -94,7 +95,11 @@ static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = { #define DISPLAY_BEU 0x00000008 #define LCDC_ENABLE 0x00000001 #define LDINTR_FE 0x00000400 +#define LDINTR_VSE 0x00000200 +#define LDINTR_VEE 0x00000100 #define LDINTR_FS 0x00000004 +#define LDINTR_VSS 0x00000002 +#define LDINTR_VES 0x00000001 struct sh_mobile_lcdc_priv; struct sh_mobile_lcdc_chan { @@ -110,6 +115,8 @@ struct sh_mobile_lcdc_chan { struct fb_deferred_io defio; struct scatterlist *sglist; unsigned long frame_end; + unsigned long pan_offset; + unsigned long new_pan_offset; wait_queue_head_t frame_end_wait; }; @@ -266,30 +273,46 @@ static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data) struct sh_mobile_lcdc_priv *priv = data; struct sh_mobile_lcdc_chan *ch; unsigned long tmp; + unsigned long ldintr; int is_sub; int k; /* acknowledge interrupt */ - tmp = lcdc_read(priv, _LDINTR); - tmp &= 0xffffff00; /* mask in high 24 bits */ - tmp |= 0x000000ff ^ LDINTR_FS; /* status in low 8 */ + ldintr = tmp = lcdc_read(priv, _LDINTR); + /* + * disable further VSYNC End IRQs, preserve all other enabled IRQs, + * write 0 to bits 0-6 to ack all triggered IRQs. + */ + tmp &= 0xffffff00 & ~LDINTR_VEE; lcdc_write(priv, _LDINTR, tmp); /* figure out if this interrupt is for main or sub lcd */ is_sub = (lcdc_read(priv, _LDSR) & (1 << 10)) ? 1 : 0; - /* wake up channel and disable clocks*/ + /* wake up channel and disable clocks */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { ch = &priv->ch[k]; if (!ch->enabled) continue; - if (is_sub == lcdc_chan_is_sublcd(ch)) { - ch->frame_end = 1; - wake_up(&ch->frame_end_wait); + /* Frame Start */ + if (ldintr & LDINTR_FS) { + if (is_sub == lcdc_chan_is_sublcd(ch)) { + ch->frame_end = 1; + wake_up(&ch->frame_end_wait); - sh_mobile_lcdc_clk_off(priv); + sh_mobile_lcdc_clk_off(priv); + } + } + + /* VSYNC End */ + if (ldintr & LDINTR_VES) { + /* Set the source address for the next refresh */ + lcdc_write_chan(ch, LDSA1R, ch->dma_handle + + ch->new_pan_offset); + lcdc_write(ch->lcdc, _LDRCNTR, 0); + ch->pan_offset = ch->new_pan_offset; } } @@ -649,6 +672,9 @@ static struct fb_fix_screeninfo sh_mobile_lcdc_fix = { .type = FB_TYPE_PACKED_PIXELS, .visual = FB_VISUAL_TRUECOLOR, .accel = FB_ACCEL_NONE, + .xpanstep = 0, + .ypanstep = 1, + .ywrapstep = 0, }; static void sh_mobile_lcdc_fillrect(struct fb_info *info, @@ -672,13 +698,38 @@ static void sh_mobile_lcdc_imageblit(struct fb_info *info, sh_mobile_lcdc_deferred_io_touch(info); } +static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var, + struct fb_info *info) +{ + struct sh_mobile_lcdc_chan *ch = info->par; + + if (info->var.xoffset == var->xoffset && + info->var.yoffset == var->yoffset) + return 0; /* No change, do nothing */ + + ch->new_pan_offset = (var->yoffset * info->fix.line_length) + + (var->xoffset * (info->var.bits_per_pixel / 8)); + + if (ch->new_pan_offset != ch->pan_offset) { + unsigned long ldintr; + ldintr = lcdc_read(ch->lcdc, _LDINTR); + ldintr |= LDINTR_VEE; + lcdc_write(ch->lcdc, _LDINTR, ldintr); + sh_mobile_lcdc_deferred_io_touch(info); + } + + return 0; +} + static struct fb_ops sh_mobile_lcdc_ops = { + .owner = THIS_MODULE, .fb_setcolreg = sh_mobile_lcdc_setcolreg, .fb_read = fb_sys_read, .fb_write = fb_sys_write, .fb_fillrect = sh_mobile_lcdc_fillrect, .fb_copyarea = sh_mobile_lcdc_copyarea, .fb_imageblit = sh_mobile_lcdc_imageblit, + .fb_pan_display = sh_mobile_fb_pan_display, }; static int sh_mobile_lcdc_set_bpp(struct fb_var_screeninfo *var, int bpp) @@ -846,6 +897,8 @@ static int __init sh_mobile_lcdc_probe(struct platform_device *pdev) goto err1; } init_waitqueue_head(&priv->ch[i].frame_end_wait); + priv->ch[j].pan_offset = 0; + priv->ch[j].new_pan_offset = 0; switch (pdata->ch[i].chan) { case LCDC_CHAN_MAINLCD: @@ -888,7 +941,9 @@ static int __init sh_mobile_lcdc_probe(struct platform_device *pdev) info = priv->ch[i].info; info->fbops = &sh_mobile_lcdc_ops; info->var.xres = info->var.xres_virtual = cfg->lcd_cfg.xres; - info->var.yres = info->var.yres_virtual = cfg->lcd_cfg.yres; + info->var.yres = cfg->lcd_cfg.yres; + /* Default Y virtual resolution is 2x panel size */ + info->var.yres_virtual = info->var.yres * 2; info->var.width = cfg->lcd_size_cfg.width; info->var.height = cfg->lcd_size_cfg.height; info->var.activate = FB_ACTIVATE_NOW; @@ -898,7 +953,8 @@ static int __init sh_mobile_lcdc_probe(struct platform_device *pdev) info->fix = sh_mobile_lcdc_fix; info->fix.line_length = cfg->lcd_cfg.xres * (cfg->bpp / 8); - info->fix.smem_len = info->fix.line_length * cfg->lcd_cfg.yres; + info->fix.smem_len = info->fix.line_length * + info->var.yres_virtual; buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len, &priv->ch[i].dma_handle, GFP_KERNEL); |