diff options
| -rw-r--r-- | drivers/video/sm501fb.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c index c86df126f93a..fc0cdc830360 100644 --- a/drivers/video/sm501fb.c +++ b/drivers/video/sm501fb.c @@ -62,6 +62,8 @@ struct sm501fb_info { struct resource *regs_res; /* registers resource */ struct sm501_platdata_fb *pdata; /* our platform data */ + unsigned long pm_crt_ctrl; /* pm: crt ctrl save */ + int irq; int swap_endian; /* set to swap rgb=>bgr */ void __iomem *regs; /* remapped registers */ @@ -1687,9 +1689,11 @@ static int sm501fb_suspend_fb(struct sm501fb_info *info, goto err_nocursor; } + dev_dbg(info->dev, "suspending screen to %p\n", par->store_fb); + dev_dbg(info->dev, "suspending cursor to %p\n", par->store_cursor); + memcpy_fromio(par->store_fb, par->screen.k_addr, par->screen.size); memcpy_fromio(par->store_cursor, par->cursor.k_addr, par->cursor.size); - /* blank the relevant interface to ensure unit power minimised */ (par->ops.fb_blank)(FB_BLANK_POWERDOWN, fbi); @@ -1697,9 +1701,9 @@ static int sm501fb_suspend_fb(struct sm501fb_info *info, err_nocursor: vfree(par->store_fb); + par->store_fb = NULL; return -ENOMEM; - } static void sm501fb_resume_fb(struct sm501fb_info *info, @@ -1717,8 +1721,16 @@ static void sm501fb_resume_fb(struct sm501fb_info *info, /* restore the data */ - memcpy_toio(par->screen.k_addr, par->store_fb, par->screen.size); - memcpy_toio(par->cursor.k_addr, par->store_cursor, par->cursor.size); + dev_dbg(info->dev, "restoring screen from %p\n", par->store_fb); + dev_dbg(info->dev, "restoring cursor from %p\n", par->store_cursor); + + if (par->store_fb) + memcpy_toio(par->screen.k_addr, par->store_fb, + par->screen.size); + + if (par->store_cursor) + memcpy_toio(par->cursor.k_addr, par->store_cursor, + par->cursor.size); vfree(par->store_fb); vfree(par->store_cursor); @@ -1731,6 +1743,9 @@ static int sm501fb_suspend(struct platform_device *pdev, pm_message_t state) { struct sm501fb_info *info = platform_get_drvdata(pdev); + /* store crt control to resume with */ + info->pm_crt_ctrl = readl(info->regs + SM501_DC_CRT_CONTROL); + sm501fb_suspend_fb(info, HEAD_CRT); sm501fb_suspend_fb(info, HEAD_PANEL); @@ -1740,12 +1755,24 @@ static int sm501fb_suspend(struct platform_device *pdev, pm_message_t state) return 0; } +#define SM501_CRT_CTRL_SAVE (SM501_DC_CRT_CONTROL_TVP | \ + SM501_DC_CRT_CONTROL_SEL) + + static int sm501fb_resume(struct platform_device *pdev) { struct sm501fb_info *info = platform_get_drvdata(pdev); + unsigned long crt_ctrl; sm501_unit_power(info->dev->parent, SM501_GATE_DISPLAY, 1); + /* restore the items we want to be saved for crt control */ + + crt_ctrl = readl(info->regs + SM501_DC_CRT_CONTROL); + crt_ctrl &= ~SM501_CRT_CTRL_SAVE; + crt_ctrl |= info->pm_crt_ctrl & SM501_CRT_CTRL_SAVE; + writel(crt_ctrl, info->regs + SM501_DC_CRT_CONTROL); + sm501fb_resume_fb(info, HEAD_CRT); sm501fb_resume_fb(info, HEAD_PANEL); |