Re: [PATCH 2/2] atmel_lcdfb: Add board parameter specify framebuffer memory size
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From: Krzysztof Helt <hidden>
Date: 2008-08-08 16:49:56
On Fri, 8 Aug 2008 14:47:05 +0200 Stanislaw Gruszka [off-list ref] wrote:
Specify how much physically continuous, DMA capable memory will be allocated at driver initialization time. This allow to create framebuffer device with larger virtual resolution. Combine with y-panning this can be used to implement double buffering acceleration method. Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl> Acked-by: Haavard Skinnemoen <redacted> ---
Acked-by: Krzysztof Helt <redacted>
quoted hunk ↗ jump to hunk
drivers/video/atmel_lcdfb.c | 7 +++++-- include/video/atmel_lcdc.h | 1 + 2 files changed, 6 insertions(+), 2 deletions(-)diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c index e1acfa7..a471a60 100644 --- a/drivers/video/atmel_lcdfb.c +++ b/drivers/video/atmel_lcdfb.c@@ -242,9 +242,11 @@ static int atmel_lcdfb_alloc_video_memory(structatmel_lcdfb_info *sinfo) { struct fb_info *info = sinfo->info; struct fb_var_screeninfo *var = &info->var; + unsigned int smem_len; - info->fix.smem_len = (var->xres_virtual * var->yres_virtual - * ((var->bits_per_pixel + 7) / 8)); + smem_len = (var->xres_virtual * var->yres_virtual + * ((var->bits_per_pixel + 7) / 8)); + info->fix.smem_len = max(smem_len, sinfo->smem_len); info->screen_base = dma_alloc_writecombine(info->device, info->fix.smem_len, (dma_addr_t *)&info->fix.smem_start, GFP_KERNEL);@@ -796,6 +798,7 @@ static int __init atmel_lcdfb_probe(struct platform_device*pdev) sinfo->default_monspecs = pdata_sinfo->default_monspecs; sinfo->atmel_lcdfb_power_control = pdata_sinfo->atmel_lcdfb_power_control; sinfo->guard_time = pdata_sinfo->guard_time; + sinfo->smem_len = pdata_sinfo->smem_len; sinfo->lcdcon_is_backlight = pdata_sinfo->lcdcon_is_backlight; sinfo->lcd_wiring_mode = pdata_sinfo->lcd_wiring_mode; } else {diff --git a/include/video/atmel_lcdc.h b/include/video/atmel_lcdc.h index 613173b..920c4e9 100644 --- a/include/video/atmel_lcdc.h +++ b/include/video/atmel_lcdc.h@@ -41,6 +41,7 @@ struct atmel_lcdfb_info { struct work_struct task; unsigned int guard_time; + unsigned int smem_len; struct platform_device *pdev; struct clk *bus_clk; struct clk *lcdc_clk;-- 1.5.2.5 ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Linux-fbdev-devel mailing list Linux-fbdev-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-fbdev-devel
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