ARM: sa1111: provide a generic way to prevent devices from registering
Some platforms don't want certain devices to be registered, because,
eg, the interface is not wired. Provide a way for platforms to
prevent various devices from being registered via a devid bitmask in
the platform data.
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 4bdf1bb..17694cf 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -833,11 +833,8 @@
g_sa1111 = sachip;
has_devs = ~0;
- if (machine_is_assabet() || machine_is_jornada720() ||
- machine_is_badge4())
- has_devs &= ~SA1111_DEVID_PS2_MSE;
- else
- has_devs &= ~SA1111_DEVID_SAC;
+ if (pd)
+ has_devs &= ~pd->disable_devs;
for (i = 0; i < ARRAY_SIZE(sa1111_devices); i++)
if (sa1111_devices[i].devid & has_devs)
diff --git a/arch/arm/include/asm/hardware/sa1111.h b/arch/arm/include/asm/hardware/sa1111.h
index 37ad29d..74afe20 100644
--- a/arch/arm/include/asm/hardware/sa1111.h
+++ b/arch/arm/include/asm/hardware/sa1111.h
@@ -584,6 +584,7 @@
struct sa1111_platform_data {
int irq_base; /* base for cascaded on-chip IRQs */
+ unsigned disable_devs;
void *data;
int (*enable)(void *, unsigned);
void (*disable)(void *, unsigned);
diff --git a/arch/arm/mach-pxa/lubbock.c b/arch/arm/mach-pxa/lubbock.c
index 6ebd276..6bb3f47 100644
--- a/arch/arm/mach-pxa/lubbock.c
+++ b/arch/arm/mach-pxa/lubbock.c
@@ -223,6 +223,7 @@
static struct sa1111_platform_data sa1111_info = {
.irq_base = LUBBOCK_SA1111_IRQ_BASE,
+ .disable_devs = SA1111_DEVID_SAC,
};
static struct platform_device sa1111_device = {
diff --git a/arch/arm/mach-sa1100/badge4.c b/arch/arm/mach-sa1100/badge4.c
index d8492499..8fb80f0 100644
--- a/arch/arm/mach-sa1100/badge4.c
+++ b/arch/arm/mach-sa1100/badge4.c
@@ -66,6 +66,7 @@
static struct sa1111_platform_data sa1111_info = {
.irq_base = IRQ_BOARD_END,
+ .disable_devs = SA1111_DEVID_PS2_MSE,
.enable = badge4_sa1111_enable,
.disable = badge4_sa1111_disable,
};
diff --git a/arch/arm/mach-sa1100/jornada720.c b/arch/arm/mach-sa1100/jornada720.c
index ee121d6..dcd6d026 100644
--- a/arch/arm/mach-sa1100/jornada720.c
+++ b/arch/arm/mach-sa1100/jornada720.c
@@ -211,6 +211,7 @@
static struct sa1111_platform_data sa1111_info = {
.irq_base = IRQ_BOARD_END,
+ .disable_devs = SA1111_DEVID_PS2_MSE,
};
static u64 sa1111_dmamask = 0xffffffffUL;
diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c
index b4fa53a..b40a719 100644
--- a/arch/arm/mach-sa1100/neponset.c
+++ b/arch/arm/mach-sa1100/neponset.c
@@ -242,6 +242,7 @@
static struct sa1111_platform_data sa1111_info = {
.irq_base = IRQ_BOARD_END,
+ .disable_devs = SA1111_DEVID_PS2_MSE,
};
static u64 sa1111_dmamask = 0xffffffffUL;
