The patch titled
atmel_lcdfb: add board parameter specify framebuffer memory size
has been added to the -mm tree. Its filename is
atmel_lcdfb-add-board-parameter-specify-framebuffer-memory-size.patch
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Subject: atmel_lcdfb: add board parameter specify framebuffer memory size
From: Stanislaw Gruszka <stf_xl@xxxxx>
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@xxxxx>
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@xxxxxxxxx>
Acked-by: Krzysztof Helt <krzysztof.h1@xxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/atmel_lcdfb.c | 7 +++++--
include/video/atmel_lcdc.h | 1 +
2 files changed, 6 insertions(+), 2 deletions(-)
diff -puN drivers/video/atmel_lcdfb.c~atmel_lcdfb-add-board-parameter-specify-framebuffer-memory-size drivers/video/atmel_lcdfb.c
--- a/drivers/video/atmel_lcdfb.c~atmel_lcdfb-add-board-parameter-specify-framebuffer-memory-size
+++ a/drivers/video/atmel_lcdfb.c
@@ -242,9 +242,11 @@ static int atmel_lcdfb_alloc_video_memor
{
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(stru
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 -puN include/video/atmel_lcdc.h~atmel_lcdfb-add-board-parameter-specify-framebuffer-memory-size include/video/atmel_lcdc.h
--- a/include/video/atmel_lcdc.h~atmel_lcdfb-add-board-parameter-specify-framebuffer-memory-size
+++ a/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;
_
Patches currently in -mm which might be from stf_xl@xxxxx are
atmel_lcdfb-set-ypanstep-to-1-and-enable-y-panning-on-at91.patch
atmel_lcdfb-add-board-parameter-specify-framebuffer-memory-size.patch
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