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ARM: vexpress: Add support for HDLCD

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This is a temporary solution to get everything running.

Signed-off-by: Jon Medhurst <tixy@linaro.org>
This commit is contained in:
Jon Medhurst
2012-06-13 10:01:28 +01:00
parent e9a113ad8f
commit 6b614fae0e
3 changed files with 36 additions and 0 deletions
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4
arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts
View File

@@ -9,6 +9,8 @@
/dts-v1/;
/memreserve/ 0xbf000000 0x01000000;
/ {
model = "V2P-CA15";
arm,hbi = <0x237>;
@@ -57,6 +59,8 @@
interrupts = <0 85 4>;
clocks = <&oscclk5>;
clock-names = "pxlclk";
mode = "1024x768-16@60";
framebuffer = <0 0xff000000 0 0x01000000>;
};
memory-controller@2b0a0000 {

4
arch/arm/boot/dts/vexpress-v2p-ca5s.dts
View File

@@ -9,6 +9,8 @@
/dts-v1/;
/memreserve/ 0xbf000000 0x01000000;
/ {
model = "V2P-CA5s";
arm,hbi = <0x225>;
@@ -59,6 +61,8 @@
interrupts = <0 85 4>;
clocks = <&oscclk3>;
clock-names = "pxlclk";
mode = "640x480-16@60";
framebuffer = <0xbf000000 0x01000000>;
};
memory-controller@2a150000 {

28
arch/arm/mach-vexpress/v2m.c
View File

@@ -10,6 +10,7 @@
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/irqchip.h>
#include <linux/memblock.h>
#include <linux/of_address.h>
#include <linux/of_fdt.h>
#include <linux/of_irq.h>
@@ -373,6 +374,31 @@ MACHINE_START(VEXPRESS, "ARM-Versatile Express")
.init_machine = v2m_init,
MACHINE_END
static void __init v2m_dt_hdlcd_init(void)
{
struct device_node *node;
int len, na, ns;
const __be32 *prop;
phys_addr_t fb_base, fb_size;
node = of_find_compatible_node(NULL, NULL, "arm,hdlcd");
if (!node)
return;
na = of_n_addr_cells(node);
ns = of_n_size_cells(node);
prop = of_get_property(node, "framebuffer", &len);
if (WARN_ON(!prop || len < (na + ns) * sizeof(*prop)))
return;
fb_base = of_read_number(prop, na);
fb_size = of_read_number(prop + na, ns);
if (WARN_ON(memblock_remove(fb_base, fb_size)))
return;
};
static struct map_desc v2m_rs1_io_desc __initdata = {
.virtual = V2M_PERIPH,
.pfn = __phys_to_pfn(0x1c000000),
@@ -423,6 +449,8 @@ void __init v2m_dt_init_early(void)
pr_warning("vexpress: DT HBI (%x) is not matching "
"hardware (%x)!\n", dt_hbi, hbi);
}
v2m_dt_hdlcd_init();
}
static void __init v2m_dt_timer_init(void)