Patch 1/2 from this set provides a possibility to reserve a block of memory
for use as the OMAP1 camera dedicated dma coherent memory. Use this
functionality to avoid the camera driver switching form videobuf_contig mode
to less efficient videobuf_sg mode in case of dma coherent memory allocation
failure after system memory gets fragmented.
Created and tested against linux-2.6.27-rc4 on top of patch 1/2.
Signed-off-by: Janusz Krzysztofik <jkrzy...@tis.icnet.pl>
---
arch/arm/mach-omap1/board-ams-delta.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
--- linux-2.6.37-rc4/arch/arm/mach-omap1/board-ams-delta.c.orig 2010-12-04
18:05:25.000000000 +0100
+++ linux-2.6.37-rc4/arch/arm/mach-omap1/board-ams-delta.c 2010-12-04
22:19:39.000000000 +0100
@@ -262,6 +262,16 @@ static struct omap1_cam_platform_data am
.lclk_khz_max = 1334, /* results in 5fps CIF, 10fps QCIF */
};
+void __init amsdelta_reserve(void)
+{
+#if defined(CONFIG_VIDEO_OMAP1) || defined(CONFIG_VIDEO_OMAP1_MODULE)
+ omap1_camera_reserve(PAGE_SIZE << get_order(352 * 288 * 2 *
+ OMAP1_CAMERA_MIN_BUF_COUNT(OMAP1_CAM_DMA_CONTIG)));
+#endif
+
+ omap_reserve();
+}
+
static struct platform_device *ams_delta_devices[] __initdata = {
&ams_delta_kp_device,
&ams_delta_lcd_device,
@@ -366,7 +376,7 @@ MACHINE_START(AMS_DELTA, "Amstrad E3 (De
/* Maintainer: Jonathan McDowell <nood...@earth.li> */
.boot_params = 0x10000100,
.map_io = ams_delta_map_io,
- .reserve = omap_reserve,
+ .reserve = amsdelta_reserve,
.init_irq = ams_delta_init_irq,
.init_machine = ams_delta_init,
.timer = &omap_timer,
--
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