From 07be45f57ebe037977c8033a008e9012617b1915 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Thu, 26 Jan 2012 13:34:21 +0000
Subject: [PATCH] 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>
---
arch/arm/common/sa1111.c | 7 ++-----
arch/arm/include/asm/hardware/sa1111.h | 1 +
arch/arm/mach-pxa/lubbock.c | 1 +
arch/arm/mach-sa1100/badge4.c | 1 +
arch/arm/mach-sa1100/jornada720.c | 1 +
arch/arm/mach-sa1100/neponset.c | 1 +
6 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 4bdf1bb283dc8..17694cf64aa60 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -833,11 +833,8 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq)
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 37ad29d482f43..74afe20fffff6 100644
--- a/arch/arm/include/asm/hardware/sa1111.h
+++ b/arch/arm/include/asm/hardware/sa1111.h
@@ -584,6 +584,7 @@ void sa1111_set_sleep_io(struct sa1111_dev *sadev, unsigned int bits, unsigned i
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 6ebd276aebeb4..6bb3f47b1f14e 100644
--- a/arch/arm/mach-pxa/lubbock.c
+++ b/arch/arm/mach-pxa/lubbock.c
@@ -223,6 +223,7 @@ static struct resource sa1111_resources[] = {
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 d84924993bad4..8fb80f02c2a92 100644
--- a/arch/arm/mach-sa1100/badge4.c
+++ b/arch/arm/mach-sa1100/badge4.c
@@ -66,6 +66,7 @@ static void badge4_sa1111_disable(void *data, unsigned devid)
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 ee121d6f04802..dcd6d026aa687 100644
--- a/arch/arm/mach-sa1100/jornada720.c
+++ b/arch/arm/mach-sa1100/jornada720.c
@@ -211,6 +211,7 @@ static struct resource sa1111_resources[] = {
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 b4fa53a1427e4..b40a7192f09f9 100644
--- a/arch/arm/mach-sa1100/neponset.c
+++ b/arch/arm/mach-sa1100/neponset.c
@@ -242,6 +242,7 @@ static struct resource sa1111_resources[] = {
static struct sa1111_platform_data sa1111_info = {
.irq_base = IRQ_BOARD_END,
+ .disable_devs = SA1111_DEVID_PS2_MSE,
};
static u64 sa1111_dmamask = 0xffffffffUL;
--
2.30.2