diff options
Diffstat (limited to 'drivers/video/sh_mobile_lcdcfb.c')
| -rw-r--r-- | drivers/video/sh_mobile_lcdcfb.c | 196 |
1 files changed, 144 insertions, 52 deletions
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c index 12c451a711e9..d72075a9f01c 100644 --- a/drivers/video/sh_mobile_lcdcfb.c +++ b/drivers/video/sh_mobile_lcdcfb.c @@ -56,6 +56,7 @@ static int lcdc_shared_regs[] = { /* per-channel registers */ enum { LDDCKPAT1R, LDDCKPAT2R, LDMT1R, LDMT2R, LDMT3R, LDDFR, LDSM1R, LDSM2R, LDSA1R, LDMLSR, LDHCNR, LDHSYNR, LDVLNR, LDVSYNR, LDPMR, + LDHAJR, NR_CH_REGS }; static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = { @@ -74,6 +75,7 @@ static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = { [LDVLNR] = 0x450, [LDVSYNR] = 0x454, [LDPMR] = 0x460, + [LDHAJR] = 0x4a0, }; static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = { @@ -137,6 +139,7 @@ struct sh_mobile_lcdc_priv { struct clk *dot_clk; unsigned long lddckr; struct sh_mobile_lcdc_chan ch[2]; + struct notifier_block notifier; unsigned long saved_shared_regs[NR_SHARED_REGS]; int started; }; @@ -404,6 +407,56 @@ static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv, lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */ } +static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch) +{ + struct fb_var_screeninfo *var = &ch->info->var; + unsigned long h_total, hsync_pos; + u32 tmp; + + tmp = ch->ldmt1r_value; + tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1 << 28; + tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1 << 27; + tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? 1 << 26 : 0; + tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? 1 << 25 : 0; + tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? 1 << 24 : 0; + tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? 1 << 17 : 0; + tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? 1 << 16 : 0; + lcdc_write_chan(ch, LDMT1R, tmp); + + /* setup SYS bus */ + lcdc_write_chan(ch, LDMT2R, ch->cfg.sys_bus_cfg.ldmt2r); + lcdc_write_chan(ch, LDMT3R, ch->cfg.sys_bus_cfg.ldmt3r); + + /* horizontal configuration */ + h_total = var->xres + var->hsync_len + + var->left_margin + var->right_margin; + tmp = h_total / 8; /* HTCN */ + tmp |= (var->xres / 8) << 16; /* HDCN */ + lcdc_write_chan(ch, LDHCNR, tmp); + + hsync_pos = var->xres + var->right_margin; + tmp = hsync_pos / 8; /* HSYNP */ + tmp |= (var->hsync_len / 8) << 16; /* HSYNW */ + lcdc_write_chan(ch, LDHSYNR, tmp); + + /* vertical configuration */ + tmp = var->yres + var->vsync_len + + var->upper_margin + var->lower_margin; /* VTLN */ + tmp |= var->yres << 16; /* VDLN */ + lcdc_write_chan(ch, LDVLNR, tmp); + + tmp = var->yres + var->lower_margin; /* VSYNP */ + tmp |= var->vsync_len << 16; /* VSYNW */ + lcdc_write_chan(ch, LDVSYNR, tmp); + + /* Adjust horizontal synchronisation for HDMI */ + tmp = ((var->xres & 7) << 24) | + ((h_total & 7) << 16) | + ((var->hsync_len & 7) << 8) | + hsync_pos; + lcdc_write_chan(ch, LDHAJR, tmp); +} + static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) { struct sh_mobile_lcdc_chan *ch; @@ -470,49 +523,11 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) if (!ch->enabled) continue; - tmp = ch->ldmt1r_value; - tmp |= (lcd_cfg->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1 << 28; - tmp |= (lcd_cfg->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1 << 27; - tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? 1 << 26 : 0; - tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? 1 << 25 : 0; - tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? 1 << 24 : 0; - tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? 1 << 17 : 0; - tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? 1 << 16 : 0; - lcdc_write_chan(ch, LDMT1R, tmp); - - /* setup SYS bus */ - lcdc_write_chan(ch, LDMT2R, ch->cfg.sys_bus_cfg.ldmt2r); - lcdc_write_chan(ch, LDMT3R, ch->cfg.sys_bus_cfg.ldmt3r); - - /* horizontal configuration */ - tmp = lcd_cfg->xres + lcd_cfg->hsync_len; - tmp += lcd_cfg->left_margin; - tmp += lcd_cfg->right_margin; - tmp /= 8; /* HTCN */ - tmp |= (lcd_cfg->xres / 8) << 16; /* HDCN */ - lcdc_write_chan(ch, LDHCNR, tmp); - - tmp = lcd_cfg->xres; - tmp += lcd_cfg->right_margin; - tmp /= 8; /* HSYNP */ - tmp |= (lcd_cfg->hsync_len / 8) << 16; /* HSYNW */ - lcdc_write_chan(ch, LDHSYNR, tmp); + sh_mobile_lcdc_geometry(ch); /* power supply */ lcdc_write_chan(ch, LDPMR, 0); - /* vertical configuration */ - tmp = lcd_cfg->yres + lcd_cfg->vsync_len; - tmp += lcd_cfg->upper_margin; - tmp += lcd_cfg->lower_margin; /* VTLN */ - tmp |= lcd_cfg->yres << 16; /* VDLN */ - lcdc_write_chan(ch, LDVLNR, tmp); - - tmp = lcd_cfg->yres; - tmp += lcd_cfg->lower_margin; /* VSYNP */ - tmp |= lcd_cfg->vsync_len << 16; /* VSYNW */ - lcdc_write_chan(ch, LDVSYNR, tmp); - board_cfg = &ch->cfg.board_cfg; if (board_cfg->setup_sys) ret = board_cfg->setup_sys(board_cfg->board_data, ch, @@ -577,7 +592,7 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) board_cfg = &ch->cfg.board_cfg; if (board_cfg->display_on) - board_cfg->display_on(board_cfg->board_data); + board_cfg->display_on(board_cfg->board_data, ch->info); } return 0; @@ -943,6 +958,62 @@ static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = { .runtime_resume = sh_mobile_lcdc_runtime_resume, }; +static int sh_mobile_lcdc_notify(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct fb_event *event = data; + struct fb_info *info = event->info; + struct sh_mobile_lcdc_chan *ch = info->par; + struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg; + struct fb_var_screeninfo *var; + + if (&ch->lcdc->notifier != nb) + return 0; + + dev_dbg(info->dev, "%s(): action = %lu, data = %p\n", + __func__, action, event->data); + + switch(action) { + case FB_EVENT_SUSPEND: + if (board_cfg->display_off) + board_cfg->display_off(board_cfg->board_data); + pm_runtime_put(info->device); + break; + case FB_EVENT_RESUME: + var = &info->var; + + /* HDMI must be enabled before LCDC configuration */ + if (board_cfg->display_on) + board_cfg->display_on(board_cfg->board_data, ch->info); + + /* Check if the new display is not in our modelist */ + if (ch->info->modelist.next && + !fb_match_mode(var, &ch->info->modelist)) { + struct fb_videomode mode; + int ret; + + /* Can we handle this display? */ + if (var->xres > ch->cfg.lcd_cfg.xres || + var->yres > ch->cfg.lcd_cfg.yres) + return -ENOMEM; + + /* Add to the modelist */ + fb_var_to_videomode(&mode, var); + ret = fb_add_videomode(&mode, &ch->info->modelist); + if (ret < 0) + return ret; + } + + pm_runtime_get_sync(info->device); + + sh_mobile_lcdc_geometry(ch); + + break; + } + + return 0; +} + static int sh_mobile_lcdc_remove(struct platform_device *pdev); static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) @@ -1020,15 +1091,19 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) goto err1; } + priv->base = ioremap_nocache(res->start, resource_size(res)); + if (!priv->base) + goto err1; + error = sh_mobile_lcdc_setup_clocks(pdev, pdata->clock_source, priv); if (error) { dev_err(&pdev->dev, "unable to setup clocks\n"); goto err1; } - priv->base = ioremap_nocache(res->start, (res->end - res->start) + 1); - for (i = 0; i < j; i++) { + struct fb_var_screeninfo *var; + struct fb_videomode *lcd_cfg; cfg = &priv->ch[i].cfg; priv->ch[i].info = framebuffer_alloc(0, &pdev->dev); @@ -1039,22 +1114,33 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) } info = priv->ch[i].info; + var = &info->var; + lcd_cfg = &cfg->lcd_cfg; info->fbops = &sh_mobile_lcdc_ops; - info->var.xres = info->var.xres_virtual = cfg->lcd_cfg.xres; - info->var.yres = cfg->lcd_cfg.yres; + var->xres = var->xres_virtual = lcd_cfg->xres; + var->yres = 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; - error = sh_mobile_lcdc_set_bpp(&info->var, cfg->bpp); + var->yres_virtual = var->yres * 2; + var->width = cfg->lcd_size_cfg.width; + var->height = cfg->lcd_size_cfg.height; + var->activate = FB_ACTIVATE_NOW; + var->left_margin = lcd_cfg->left_margin; + var->right_margin = lcd_cfg->right_margin; + var->upper_margin = lcd_cfg->upper_margin; + var->lower_margin = lcd_cfg->lower_margin; + var->hsync_len = lcd_cfg->hsync_len; + var->vsync_len = lcd_cfg->vsync_len; + var->sync = lcd_cfg->sync; + var->pixclock = lcd_cfg->pixclock; + + error = sh_mobile_lcdc_set_bpp(var, cfg->bpp); if (error) break; info->fix = sh_mobile_lcdc_fix; - info->fix.line_length = cfg->lcd_cfg.xres * (cfg->bpp / 8); + info->fix.line_length = lcd_cfg->xres * (cfg->bpp / 8); info->fix.smem_len = info->fix.line_length * - info->var.yres_virtual; + var->yres_virtual; buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len, &priv->ch[i].dma_handle, GFP_KERNEL); @@ -1119,10 +1205,14 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) ch->cfg.bpp); /* deferred io mode: disable clock to save power */ - if (info->fbdefio) + if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED) sh_mobile_lcdc_clk_off(priv); } + /* Failure ignored */ + priv->notifier.notifier_call = sh_mobile_lcdc_notify; + fb_register_client(&priv->notifier); + return 0; err1: sh_mobile_lcdc_remove(pdev); @@ -1136,6 +1226,8 @@ static int sh_mobile_lcdc_remove(struct platform_device *pdev) struct fb_info *info; int i; + fb_unregister_client(&priv->notifier); + for (i = 0; i < ARRAY_SIZE(priv->ch); i++) if (priv->ch[i].info && priv->ch[i].info->dev) unregister_framebuffer(priv->ch[i].info); |