From: "Cédric Le Goater" <clg@fr.ibm.com>
To: benh@kernel.crashing.org
Cc: "Cédric Le Goater" <clg@fr.ibm.com>, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v3 1/2] offb: little endian fixes
Date: Wed, 4 Dec 2013 17:49:51 +0100 [thread overview]
Message-ID: <1386175792-31822-1-git-send-email-clg@fr.ibm.com> (raw)
In-Reply-To: <1385240643.4882.133.camel@pasglop>
The "screen" properties : depth, width, height, linebytes need
to be converted to the host endian order when read from the device
tree.
The offb_init_palette_hacks() routine also made assumption on the
host endian order.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
---
Changes in v3:
- fixed offb_init_palette_hacks()
Changes in v2:
- replaced be32_to_cpu() by be32_to_cpup()
drivers/video/offb.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/drivers/video/offb.c b/drivers/video/offb.c
index 9dbea2223401..43a0a52fc527 100644
--- a/drivers/video/offb.c
+++ b/drivers/video/offb.c
@@ -301,7 +301,7 @@ static struct fb_ops offb_ops = {
static void __iomem *offb_map_reg(struct device_node *np, int index,
unsigned long offset, unsigned long size)
{
- const u32 *addrp;
+ const __be32 *addrp;
u64 asize, taddr;
unsigned int flags;
@@ -369,7 +369,11 @@ static void offb_init_palette_hacks(struct fb_info *info, struct device_node *dp
}
of_node_put(pciparent);
} else if (dp && of_device_is_compatible(dp, "qemu,std-vga")) {
- const u32 io_of_addr[3] = { 0x01000000, 0x0, 0x0 };
+#ifdef __BIG_ENDIAN
+ const __be32 io_of_addr[3] = { 0x01000000, 0x0, 0x0 };
+#else
+ const __be32 io_of_addr[3] = { 0x00000001, 0x0, 0x0 };
+#endif
u64 io_addr = of_translate_address(dp, io_of_addr);
if (io_addr != OF_BAD_ADDR) {
par->cmap_adr = ioremap(io_addr + 0x3c8, 2);
@@ -535,7 +539,7 @@ static void __init offb_init_nodriver(struct device_node *dp, int no_real_node)
unsigned int flags, rsize, addr_prop = 0;
unsigned long max_size = 0;
u64 rstart, address = OF_BAD_ADDR;
- const u32 *pp, *addrp, *up;
+ const __be32 *pp, *addrp, *up;
u64 asize;
int foreign_endian = 0;
@@ -551,25 +555,25 @@ static void __init offb_init_nodriver(struct device_node *dp, int no_real_node)
if (pp == NULL)
pp = of_get_property(dp, "depth", &len);
if (pp && len == sizeof(u32))
- depth = *pp;
+ depth = be32_to_cpup(pp);
pp = of_get_property(dp, "linux,bootx-width", &len);
if (pp == NULL)
pp = of_get_property(dp, "width", &len);
if (pp && len == sizeof(u32))
- width = *pp;
+ width = be32_to_cpup(pp);
pp = of_get_property(dp, "linux,bootx-height", &len);
if (pp == NULL)
pp = of_get_property(dp, "height", &len);
if (pp && len == sizeof(u32))
- height = *pp;
+ height = be32_to_cpup(pp);
pp = of_get_property(dp, "linux,bootx-linebytes", &len);
if (pp == NULL)
pp = of_get_property(dp, "linebytes", &len);
if (pp && len == sizeof(u32) && (*pp != 0xffffffffu))
- pitch = *pp;
+ pitch = be32_to_cpup(pp);
else
pitch = width * ((depth + 7) / 8);
--
1.7.10.4
next prev parent reply other threads:[~2013-12-04 16:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-30 16:14 [PATCH] offb: make the screen properties endian safe Cédric Le Goater
2013-10-31 2:08 ` Benjamin Herrenschmidt
2013-10-31 9:36 ` [PATCH v2] " Cédric Le Goater
2013-11-20 22:50 ` Benjamin Herrenschmidt
2013-11-21 15:45 ` Cedric Le Goater
2013-11-21 19:57 ` Benjamin Herrenschmidt
2013-11-23 17:38 ` Cedric Le Goater
2013-11-23 21:04 ` Benjamin Herrenschmidt
2013-12-04 16:47 ` Cedric Le Goater
2013-12-04 16:49 ` Cédric Le Goater [this message]
2013-12-04 16:49 ` [PATCH v3 2/2] offb: add palette hack for little endian Cédric Le Goater
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