diff options
Diffstat (limited to 'drivers/video/sh_mobile_lcdcfb.c')
| -rw-r--r-- | drivers/video/sh_mobile_lcdcfb.c | 103 |
1 files changed, 94 insertions, 9 deletions
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c index 9bcc61b4ef14..3a2cbd18f91b 100644 --- a/drivers/video/sh_mobile_lcdcfb.c +++ b/drivers/video/sh_mobile_lcdcfb.c @@ -27,6 +27,7 @@ #include <asm/atomic.h> #include "sh_mobile_lcdcfb.h" +#include "sh_mobile_meram.h" #define SIDE_B_OFFSET 0x1000 #define MIRROR_OFFSET 0x2000 @@ -143,6 +144,7 @@ struct sh_mobile_lcdc_priv { unsigned long saved_shared_regs[NR_SHARED_REGS]; int started; int forced_bpp; /* 2 channel LCDC must share bpp setting */ + struct sh_mobile_meram_info *meram_dev; }; static bool banked(int reg_nr) @@ -564,6 +566,9 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) } for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { + unsigned long base_addr_y; + unsigned long base_addr_c = 0; + int pitch; ch = &priv->ch[k]; if (!priv->ch[k].enabled) @@ -598,16 +603,63 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) } lcdc_write_chan(ch, LDDFR, tmp); + base_addr_y = ch->info->fix.smem_start; + base_addr_c = base_addr_y + + ch->info->var.xres * + ch->info->var.yres_virtual; + pitch = ch->info->fix.line_length; + + /* test if we can enable meram */ + if (ch->cfg.meram_cfg && priv->meram_dev) { + struct sh_mobile_meram_cfg *cfg; + struct sh_mobile_meram_info *mdev; + unsigned long icb_addr_y, icb_addr_c; + int icb_pitch; + int pf; + + cfg = ch->cfg.meram_cfg; + mdev = priv->meram_dev; + /* we need to de-init configured ICBs before we + * we can re-initialize them. + */ + if (ch->meram_enabled) + mdev->ops->meram_unregister(mdev, cfg); + + ch->meram_enabled = 0; + + if (ch->info->var.nonstd) + pf = SH_MOBILE_MERAM_PF_NV; + else + pf = SH_MOBILE_MERAM_PF_RGB; + + ret = mdev->ops->meram_register(mdev, cfg, pitch, + ch->info->var.yres, + pf, + base_addr_y, + base_addr_c, + &icb_addr_y, + &icb_addr_c, + &icb_pitch); + if (!ret) { + /* set LDSA1R value */ + base_addr_y = icb_addr_y; + pitch = icb_pitch; + + /* set LDSA2R value if required */ + if (base_addr_c) + base_addr_c = icb_addr_c; + + ch->meram_enabled = 1; + } + } + /* point out our frame buffer */ - lcdc_write_chan(ch, LDSA1R, ch->info->fix.smem_start); + lcdc_write_chan(ch, LDSA1R, base_addr_y); if (ch->info->var.nonstd) - lcdc_write_chan(ch, LDSA2R, - ch->info->fix.smem_start + - ch->info->var.xres * - ch->info->var.yres_virtual); + lcdc_write_chan(ch, LDSA2R, base_addr_c); /* set line size */ - lcdc_write_chan(ch, LDMLSR, ch->info->fix.line_length); + lcdc_write_chan(ch, LDMLSR, pitch); /* setup deferred io if SYS bus */ tmp = ch->cfg.sys_bus_cfg.deferred_io_msec; @@ -692,6 +744,17 @@ static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) board_cfg->display_off(board_cfg->board_data); module_put(board_cfg->owner); } + + /* disable the meram */ + if (ch->meram_enabled) { + struct sh_mobile_meram_cfg *cfg; + struct sh_mobile_meram_info *mdev; + cfg = ch->cfg.meram_cfg; + mdev = priv->meram_dev; + mdev->ops->meram_unregister(mdev, cfg); + ch->meram_enabled = 0; + } + } /* stop the lcdc */ @@ -875,9 +938,29 @@ static int sh_mobile_fb_pan_display(struct fb_var_screeninfo *var, } else base_addr_c = 0; - lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y); - if (base_addr_c) - lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c); + if (!ch->meram_enabled) { + lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y); + if (base_addr_c) + lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c); + } else { + struct sh_mobile_meram_cfg *cfg; + struct sh_mobile_meram_info *mdev; + unsigned long icb_addr_y, icb_addr_c; + int ret; + + cfg = ch->cfg.meram_cfg; + mdev = priv->meram_dev; + ret = mdev->ops->meram_update(mdev, cfg, + base_addr_y, base_addr_c, + &icb_addr_y, &icb_addr_c); + if (ret) + return ret; + + lcdc_write_chan_mirror(ch, LDSA1R, icb_addr_y); + if (icb_addr_c) + lcdc_write_chan_mirror(ch, LDSA2R, icb_addr_c); + + } if (lcdc_chan_is_sublcd(ch)) lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS); @@ -1420,6 +1503,8 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) goto err1; } + priv->meram_dev = pdata->meram_dev; + for (i = 0; i < j; i++) { struct fb_var_screeninfo *var; const struct fb_videomode *lcd_cfg, *max_cfg = NULL; |
