diff options
author | Richard Purdie <rpurdie@linux.intel.com> | 2010-08-27 15:14:24 +0100 |
---|---|---|
committer | Richard Purdie <rpurdie@linux.intel.com> | 2010-08-27 15:29:45 +0100 |
commit | 29d6678fd546377459ef75cf54abeef5b969b5cf (patch) | |
tree | 8edd65790e37a00d01c3f203f773fe4b5012db18 /meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0049-DSS2-VRAM-clear-allocated-area-with-DMA.patch | |
parent | da49de6885ee1bc424e70bc02f21f6ab920efb55 (diff) | |
download | poky-29d6678fd546377459ef75cf54abeef5b969b5cf.tar.gz |
Major layout change to the packages directory
Having one monolithic packages directory makes it hard to find things
and is generally overwhelming. This commit splits it into several
logical sections roughly based on function, recipes.txt gives more
information about the classifications used.
The opportunity is also used to switch from "packages" to "recipes"
as used in OpenEmbedded as the term "packages" can be confusing to
people and has many different meanings.
Not all recipes have been classified yet, this is just a first pass
at separating things out. Some packages are moved to meta-extras as
they're no longer actively used or maintained.
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Diffstat (limited to 'meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0049-DSS2-VRAM-clear-allocated-area-with-DMA.patch')
-rw-r--r-- | meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0049-DSS2-VRAM-clear-allocated-area-with-DMA.patch | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0049-DSS2-VRAM-clear-allocated-area-with-DMA.patch b/meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0049-DSS2-VRAM-clear-allocated-area-with-DMA.patch new file mode 100644 index 0000000000..e9fc76ce15 --- /dev/null +++ b/meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0049-DSS2-VRAM-clear-allocated-area-with-DMA.patch | |||
@@ -0,0 +1,101 @@ | |||
1 | From 02034cc79f69512a6037f03ad1243c28f59fdd8a Mon Sep 17 00:00:00 2001 | ||
2 | From: Tomi Valkeinen <tomi.valkeinen@nokia.com> | ||
3 | Date: Wed, 22 Apr 2009 10:25:20 +0300 | ||
4 | Subject: [PATCH] DSS2: VRAM: clear allocated area with DMA | ||
5 | |||
6 | Use DMA constant fill feature to clear VRAM area when | ||
7 | someone allocates it. | ||
8 | --- | ||
9 | arch/arm/plat-omap/vram.c | 57 +++++++++++++++++++++++++++++++++++++++++++++ | ||
10 | 1 files changed, 57 insertions(+), 0 deletions(-) | ||
11 | |||
12 | diff --git a/arch/arm/plat-omap/vram.c b/arch/arm/plat-omap/vram.c | ||
13 | index 8e9fe77..90276ac 100644 | ||
14 | --- a/arch/arm/plat-omap/vram.c | ||
15 | +++ b/arch/arm/plat-omap/vram.c | ||
16 | @@ -31,11 +31,13 @@ | ||
17 | #include <linux/seq_file.h> | ||
18 | #include <linux/bootmem.h> | ||
19 | #include <linux/omapfb.h> | ||
20 | +#include <linux/completion.h> | ||
21 | |||
22 | #include <asm/setup.h> | ||
23 | |||
24 | #include <mach/sram.h> | ||
25 | #include <mach/vram.h> | ||
26 | +#include <mach/dma.h> | ||
27 | |||
28 | #ifdef DEBUG | ||
29 | #define DBG(format, ...) printk(KERN_DEBUG "VRAM: " format, ## __VA_ARGS__) | ||
30 | @@ -276,6 +278,59 @@ int omap_vram_reserve(unsigned long paddr, size_t size) | ||
31 | } | ||
32 | EXPORT_SYMBOL(omap_vram_reserve); | ||
33 | |||
34 | +static void _omap_vram_dma_cb(int lch, u16 ch_status, void *data) | ||
35 | +{ | ||
36 | + struct completion *compl = data; | ||
37 | + complete(compl); | ||
38 | +} | ||
39 | + | ||
40 | +static int _omap_vram_clear(u32 paddr, unsigned pages) | ||
41 | +{ | ||
42 | + struct completion compl; | ||
43 | + unsigned elem_count; | ||
44 | + unsigned frame_count; | ||
45 | + int r; | ||
46 | + int lch; | ||
47 | + | ||
48 | + init_completion(&compl); | ||
49 | + | ||
50 | + r = omap_request_dma(OMAP_DMA_NO_DEVICE, "VRAM DMA", | ||
51 | + _omap_vram_dma_cb, | ||
52 | + &compl, &lch); | ||
53 | + if (r) { | ||
54 | + pr_err("VRAM: request_dma failed for memory clear\n"); | ||
55 | + return -EBUSY; | ||
56 | + } | ||
57 | + | ||
58 | + elem_count = pages * PAGE_SIZE / 4; | ||
59 | + frame_count = 1; | ||
60 | + | ||
61 | + omap_set_dma_transfer_params(lch, OMAP_DMA_DATA_TYPE_S32, | ||
62 | + elem_count, frame_count, | ||
63 | + OMAP_DMA_SYNC_ELEMENT, | ||
64 | + 0, 0); | ||
65 | + | ||
66 | + omap_set_dma_dest_params(lch, 0, OMAP_DMA_AMODE_POST_INC, | ||
67 | + paddr, 0, 0); | ||
68 | + | ||
69 | + omap_set_dma_color_mode(lch, OMAP_DMA_CONSTANT_FILL, 0x000000); | ||
70 | + | ||
71 | + omap_start_dma(lch); | ||
72 | + | ||
73 | + if (wait_for_completion_timeout(&compl, msecs_to_jiffies(1000)) == 0) { | ||
74 | + omap_stop_dma(lch); | ||
75 | + pr_err("VRAM: dma timeout while clearing memory\n"); | ||
76 | + r = -EIO; | ||
77 | + goto err; | ||
78 | + } | ||
79 | + | ||
80 | + r = 0; | ||
81 | +err: | ||
82 | + omap_free_dma(lch); | ||
83 | + | ||
84 | + return r; | ||
85 | +} | ||
86 | + | ||
87 | static int _omap_vram_alloc(int mtype, unsigned pages, unsigned long *paddr) | ||
88 | { | ||
89 | struct vram_region *rm; | ||
90 | @@ -313,6 +368,8 @@ found: | ||
91 | |||
92 | *paddr = start; | ||
93 | |||
94 | + _omap_vram_clear(start, pages); | ||
95 | + | ||
96 | return 0; | ||
97 | } | ||
98 | |||
99 | -- | ||
100 | 1.5.6.5 | ||
101 | |||