diff options
Diffstat (limited to 'meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0044-DSS2-add-sysfs-entry-for-seting-the-rotate-type.patch')
-rw-r--r-- | meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0044-DSS2-add-sysfs-entry-for-seting-the-rotate-type.patch | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0044-DSS2-add-sysfs-entry-for-seting-the-rotate-type.patch b/meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0044-DSS2-add-sysfs-entry-for-seting-the-rotate-type.patch new file mode 100644 index 0000000000..32def9e8d5 --- /dev/null +++ b/meta/recipes-kernel/linux/linux-omap-2.6.29/dss2/0044-DSS2-add-sysfs-entry-for-seting-the-rotate-type.patch | |||
@@ -0,0 +1,76 @@ | |||
1 | From a9b3500bd14609750a2337e866e1df62627c1bac Mon Sep 17 00:00:00 2001 | ||
2 | From: Imre Deak <imre.deak@nokia.com> | ||
3 | Date: Mon, 20 Apr 2009 14:55:33 +0200 | ||
4 | Subject: [PATCH] DSS2: add sysfs entry for seting the rotate type | ||
5 | |||
6 | This can help in utilizing VRAM memory better. Since with VRFB rotation | ||
7 | we waste a lot of physical memory due to the VRFB HW design, provide the | ||
8 | possibility to turn it off and free the extra memory for the use by other | ||
9 | planes for example. | ||
10 | --- | ||
11 | drivers/video/omap2/omapfb/omapfb-sysfs.c | 42 ++++++++++++++++++++++++++++- | ||
12 | 1 files changed, 41 insertions(+), 1 deletions(-) | ||
13 | |||
14 | diff --git a/drivers/video/omap2/omapfb/omapfb-sysfs.c b/drivers/video/omap2/omapfb/omapfb-sysfs.c | ||
15 | index 2c88718..4e3da42 100644 | ||
16 | --- a/drivers/video/omap2/omapfb/omapfb-sysfs.c | ||
17 | +++ b/drivers/video/omap2/omapfb/omapfb-sysfs.c | ||
18 | @@ -43,6 +43,46 @@ static ssize_t show_rotate_type(struct device *dev, | ||
19 | return snprintf(buf, PAGE_SIZE, "%d\n", ofbi->rotation_type); | ||
20 | } | ||
21 | |||
22 | +static ssize_t store_rotate_type(struct device *dev, | ||
23 | + struct device_attribute *attr, | ||
24 | + const char *buf, size_t count) | ||
25 | +{ | ||
26 | + struct fb_info *fbi = dev_get_drvdata(dev); | ||
27 | + struct omapfb_info *ofbi = FB2OFB(fbi); | ||
28 | + struct omapfb2_device *fbdev = ofbi->fbdev; | ||
29 | + enum omap_dss_rotation_type rot_type; | ||
30 | + int r; | ||
31 | + | ||
32 | + rot_type = simple_strtoul(buf, NULL, 0); | ||
33 | + | ||
34 | + if (rot_type != OMAP_DSS_ROT_DMA && rot_type != OMAP_DSS_ROT_VRFB) | ||
35 | + return -EINVAL; | ||
36 | + | ||
37 | + omapfb_lock(fbdev); | ||
38 | + | ||
39 | + r = 0; | ||
40 | + if (rot_type == ofbi->rotation_type) | ||
41 | + goto out; | ||
42 | + | ||
43 | + r = -EBUSY; | ||
44 | + if (ofbi->region.size) | ||
45 | + goto out; | ||
46 | + | ||
47 | + ofbi->rotation_type = rot_type; | ||
48 | + | ||
49 | + /* | ||
50 | + * Since the VRAM for this FB is not allocated at the moment we don't need to | ||
51 | + * do any further parameter checking at this point. | ||
52 | + */ | ||
53 | + | ||
54 | + r = count; | ||
55 | +out: | ||
56 | + omapfb_unlock(fbdev); | ||
57 | + | ||
58 | + return r; | ||
59 | +} | ||
60 | + | ||
61 | + | ||
62 | static ssize_t show_mirror(struct device *dev, | ||
63 | struct device_attribute *attr, char *buf) | ||
64 | { | ||
65 | @@ -327,7 +367,7 @@ static ssize_t show_virt(struct device *dev, | ||
66 | } | ||
67 | |||
68 | static struct device_attribute omapfb_attrs[] = { | ||
69 | - __ATTR(rotate_type, S_IRUGO, show_rotate_type, NULL), | ||
70 | + __ATTR(rotate_type, S_IRUGO | S_IWUSR, show_rotate_type, store_rotate_type), | ||
71 | __ATTR(mirror, S_IRUGO | S_IWUSR, show_mirror, store_mirror), | ||
72 | __ATTR(size, S_IRUGO | S_IWUSR, show_size, store_size), | ||
73 | __ATTR(overlays, S_IRUGO | S_IWUSR, show_overlays, store_overlays), | ||
74 | -- | ||
75 | 1.5.6.5 | ||
76 | |||