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authorShawn Guo <shawn.guo@freescale.com>2011-01-04 07:20:52 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2011-01-12 14:47:15 +0100
commitdbc4245bb520580fc1b01105727fde7d7cbe452d (patch)
tree993aa43d0831ddb9a981640a9bf48bb92e8e78bf /arch/arm/mach-mxs
parentARM: mx28: add the second fec device registration (diff)
downloadlinux-dbc4245bb520580fc1b01105727fde7d7cbe452d.tar.xz
linux-dbc4245bb520580fc1b01105727fde7d7cbe452d.zip
ARM: mxs: Change duart device to use amba-pl011
The mxs duart is actually an amba-pl011 device. This commit changes the duart device code to dynamically allocate amba-pl011 device, so that drivers/serial/amba-pl011.c can be used on mxs. Signed-off-by: Shawn Guo <shawn.guo@freescale.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mxs')
-rw-r--r--arch/arm/mach-mxs/Kconfig4
-rw-r--r--arch/arm/mach-mxs/clock-mx23.c12
-rw-r--r--arch/arm/mach-mxs/clock-mx28.c11
-rw-r--r--arch/arm/mach-mxs/devices-mx23.h4
-rw-r--r--arch/arm/mach-mxs/devices-mx28.h4
-rw-r--r--arch/arm/mach-mxs/devices.c17
-rw-r--r--arch/arm/mach-mxs/devices/Kconfig3
-rw-r--r--arch/arm/mach-mxs/devices/Makefile2
-rw-r--r--arch/arm/mach-mxs/devices/amba-duart.c40
-rw-r--r--arch/arm/mach-mxs/devices/platform-duart.c48
-rw-r--r--arch/arm/mach-mxs/include/mach/devices-common.h11
11 files changed, 88 insertions, 68 deletions
diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
index c4ac7b415195..8bfc8df54617 100644
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig
@@ -15,7 +15,7 @@ comment "MXS platforms:"
config MACH_MX23EVK
bool "Support MX23EVK Platform"
select SOC_IMX23
- select MXS_HAVE_PLATFORM_DUART
+ select MXS_HAVE_AMBA_DUART
default y
help
Include support for MX23EVK platform. This includes specific
@@ -24,7 +24,7 @@ config MACH_MX23EVK
config MACH_MX28EVK
bool "Support MX28EVK Platform"
select SOC_IMX28
- select MXS_HAVE_PLATFORM_DUART
+ select MXS_HAVE_AMBA_DUART
select MXS_HAVE_PLATFORM_FEC
default y
help
diff --git a/arch/arm/mach-mxs/clock-mx23.c b/arch/arm/mach-mxs/clock-mx23.c
index 8f5a19ab558c..136341de05e1 100644
--- a/arch/arm/mach-mxs/clock-mx23.c
+++ b/arch/arm/mach-mxs/clock-mx23.c
@@ -437,10 +437,12 @@ _DEFINE_CLOCK(clk32k_clk, XTAL, TIMROT_CLK32K_GATE, &ref_xtal_clk);
},
static struct clk_lookup lookups[] = {
- _REGISTER_CLOCK("mxs-duart.0", NULL, uart_clk)
+ /* for amba bus driver */
+ _REGISTER_CLOCK("duart", "apb_pclk", xbus_clk)
+ /* for amba-pl011 driver */
+ _REGISTER_CLOCK("duart", NULL, uart_clk)
_REGISTER_CLOCK("rtc", NULL, rtc_clk)
_REGISTER_CLOCK(NULL, "hclk", hbus_clk)
- _REGISTER_CLOCK(NULL, "xclk", xbus_clk)
_REGISTER_CLOCK(NULL, "usb", usb_clk)
_REGISTER_CLOCK(NULL, "audio", audio_clk)
_REGISTER_CLOCK(NULL, "pwm", pwm_clk)
@@ -518,6 +520,12 @@ int __init mx23_clocks_init(void)
{
clk_misc_init();
+ clk_enable(&cpu_clk);
+ clk_enable(&hbus_clk);
+ clk_enable(&xbus_clk);
+ clk_enable(&emi_clk);
+ clk_enable(&uart_clk);
+
clkdev_add_table(lookups, ARRAY_SIZE(lookups));
mxs_timer_init(&clk32k_clk, MX23_INT_TIMER0);
diff --git a/arch/arm/mach-mxs/clock-mx28.c b/arch/arm/mach-mxs/clock-mx28.c
index fbb8d7424d0c..fcac1a5663b4 100644
--- a/arch/arm/mach-mxs/clock-mx28.c
+++ b/arch/arm/mach-mxs/clock-mx28.c
@@ -602,7 +602,10 @@ _DEFINE_CLOCK(fec_clk, ENET, DISABLE, &hbus_clk);
},
static struct clk_lookup lookups[] = {
- _REGISTER_CLOCK("mxs-duart.0", NULL, uart_clk)
+ /* for amba bus driver */
+ _REGISTER_CLOCK("duart", "apb_pclk", xbus_clk)
+ /* for amba-pl011 driver */
+ _REGISTER_CLOCK("duart", NULL, uart_clk)
_REGISTER_CLOCK("imx28-fec.0", NULL, fec_clk)
_REGISTER_CLOCK("imx28-fec.1", NULL, fec_clk)
_REGISTER_CLOCK("fec.0", NULL, fec_clk)
@@ -728,6 +731,12 @@ int __init mx28_clocks_init(void)
{
clk_misc_init();
+ clk_enable(&cpu_clk);
+ clk_enable(&hbus_clk);
+ clk_enable(&xbus_clk);
+ clk_enable(&emi_clk);
+ clk_enable(&uart_clk);
+
clkdev_add_table(lookups, ARRAY_SIZE(lookups));
mxs_timer_init(&clk32k_clk, MX28_INT_TIMER0);
diff --git a/arch/arm/mach-mxs/devices-mx23.h b/arch/arm/mach-mxs/devices-mx23.h
index d0f49fc0abb5..1256788561d0 100644
--- a/arch/arm/mach-mxs/devices-mx23.h
+++ b/arch/arm/mach-mxs/devices-mx23.h
@@ -11,6 +11,6 @@
#include <mach/mx23.h>
#include <mach/devices-common.h>
-extern const struct mxs_duart_data mx23_duart_data __initconst;
+extern const struct amba_device mx23_duart_device __initconst;
#define mx23_add_duart() \
- mxs_add_duart(&mx23_duart_data)
+ mxs_add_duart(&mx23_duart_device)
diff --git a/arch/arm/mach-mxs/devices-mx28.h b/arch/arm/mach-mxs/devices-mx28.h
index 00b736c434ba..33773a6333a2 100644
--- a/arch/arm/mach-mxs/devices-mx28.h
+++ b/arch/arm/mach-mxs/devices-mx28.h
@@ -11,9 +11,9 @@
#include <mach/mx28.h>
#include <mach/devices-common.h>
-extern const struct mxs_duart_data mx28_duart_data __initconst;
+extern const struct amba_device mx28_duart_device __initconst;
#define mx28_add_duart() \
- mxs_add_duart(&mx28_duart_data)
+ mxs_add_duart(&mx28_duart_device)
extern const struct mxs_fec_data mx28_fec_data[] __initconst;
#define mx28_add_fec(id, pdata) \
diff --git a/arch/arm/mach-mxs/devices.c b/arch/arm/mach-mxs/devices.c
index 6b60f02ca2e3..c20d54740b0b 100644
--- a/arch/arm/mach-mxs/devices.c
+++ b/arch/arm/mach-mxs/devices.c
@@ -19,9 +19,8 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
-#include <linux/err.h>
#include <linux/platform_device.h>
-#include <mach/common.h>
+#include <linux/amba/bus.h>
struct platform_device *__init mxs_add_platform_device_dmamask(
const char *name, int id,
@@ -73,3 +72,17 @@ err:
return pdev;
}
+
+int __init mxs_add_amba_device(const struct amba_device *dev)
+{
+ struct amba_device *adev = kmalloc(sizeof(*adev), GFP_KERNEL);
+
+ if (!adev) {
+ pr_err("%s: failed to allocate memory", __func__);
+ return -ENOMEM;
+ }
+
+ *adev = *dev;
+
+ return amba_device_register(adev, &iomem_resource);
+}
diff --git a/arch/arm/mach-mxs/devices/Kconfig b/arch/arm/mach-mxs/devices/Kconfig
index a35a2dc55395..cf7dc1ae575b 100644
--- a/arch/arm/mach-mxs/devices/Kconfig
+++ b/arch/arm/mach-mxs/devices/Kconfig
@@ -1,5 +1,6 @@
-config MXS_HAVE_PLATFORM_DUART
+config MXS_HAVE_AMBA_DUART
bool
+ select ARM_AMBA
config MXS_HAVE_PLATFORM_FEC
bool
diff --git a/arch/arm/mach-mxs/devices/Makefile b/arch/arm/mach-mxs/devices/Makefile
index 4b5266a3e6d9..d0a09f6934b8 100644
--- a/arch/arm/mach-mxs/devices/Makefile
+++ b/arch/arm/mach-mxs/devices/Makefile
@@ -1,2 +1,2 @@
-obj-$(CONFIG_MXS_HAVE_PLATFORM_DUART) += platform-duart.o
+obj-$(CONFIG_MXS_HAVE_AMBA_DUART) += amba-duart.o
obj-$(CONFIG_MXS_HAVE_PLATFORM_FEC) += platform-fec.o
diff --git a/arch/arm/mach-mxs/devices/amba-duart.c b/arch/arm/mach-mxs/devices/amba-duart.c
new file mode 100644
index 000000000000..a559db09b49c
--- /dev/null
+++ b/arch/arm/mach-mxs/devices/amba-duart.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2009-2010 Pengutronix
+ * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
+ *
+ * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License version 2 as published by the
+ * Free Software Foundation.
+ */
+#include <asm/irq.h>
+#include <mach/mx23.h>
+#include <mach/mx28.h>
+#include <mach/devices-common.h>
+
+#define MXS_AMBA_DUART_DEVICE(name, soc) \
+const struct amba_device name##_device __initconst = { \
+ .dev = { \
+ .init_name = "duart", \
+ }, \
+ .res = { \
+ .start = soc ## _DUART_BASE_ADDR, \
+ .end = (soc ## _DUART_BASE_ADDR) + SZ_8K - 1, \
+ .flags = IORESOURCE_MEM, \
+ }, \
+ .irq = {soc ## _INT_DUART, NO_IRQ}, \
+}
+
+#ifdef CONFIG_SOC_IMX23
+MXS_AMBA_DUART_DEVICE(mx23_duart, MX23);
+#endif
+
+#ifdef CONFIG_SOC_IMX28
+MXS_AMBA_DUART_DEVICE(mx28_duart, MX28);
+#endif
+
+int __init mxs_add_duart(const struct amba_device *dev)
+{
+ return mxs_add_amba_device(dev);
+}
diff --git a/arch/arm/mach-mxs/devices/platform-duart.c b/arch/arm/mach-mxs/devices/platform-duart.c
deleted file mode 100644
index 2fe0df5b0aad..000000000000
--- a/arch/arm/mach-mxs/devices/platform-duart.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright (C) 2009-2010 Pengutronix
- * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
- *
- * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it under
- * the terms of the GNU General Public License version 2 as published by the
- * Free Software Foundation.
- */
-#include <mach/mx23.h>
-#include <mach/mx28.h>
-#include <mach/devices-common.h>
-
-#define mxs_duart_data_entry(soc) \
- { \
- .iobase = soc ## _DUART_BASE_ADDR, \
- .irq = soc ## _INT_DUART, \
- }
-
-#ifdef CONFIG_SOC_IMX23
-const struct mxs_duart_data mx23_duart_data __initconst =
- mxs_duart_data_entry(MX23);
-#endif
-
-#ifdef CONFIG_SOC_IMX28
-const struct mxs_duart_data mx28_duart_data __initconst =
- mxs_duart_data_entry(MX28);
-#endif
-
-struct platform_device *__init mxs_add_duart(
- const struct mxs_duart_data *data)
-{
- struct resource res[] = {
- {
- .start = data->iobase,
- .end = data->iobase + SZ_8K - 1,
- .flags = IORESOURCE_MEM,
- }, {
- .start = data->irq,
- .end = data->irq,
- .flags = IORESOURCE_IRQ,
- },
- };
-
- return mxs_add_platform_device("mxs-duart", 0, res, ARRAY_SIZE(res),
- NULL, 0);
-}
diff --git a/arch/arm/mach-mxs/include/mach/devices-common.h b/arch/arm/mach-mxs/include/mach/devices-common.h
index 3da48d4d3273..6c3d1a103433 100644
--- a/arch/arm/mach-mxs/include/mach/devices-common.h
+++ b/arch/arm/mach-mxs/include/mach/devices-common.h
@@ -9,6 +9,7 @@
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/init.h>
+#include <linux/amba/bus.h>
struct platform_device *mxs_add_platform_device_dmamask(
const char *name, int id,
@@ -24,14 +25,10 @@ static inline struct platform_device *mxs_add_platform_device(
name, id, res, num_resources, data, size_data, 0);
}
+int __init mxs_add_amba_device(const struct amba_device *dev);
+
/* duart */
-struct mxs_duart_data {
- resource_size_t iobase;
- resource_size_t iosize;
- resource_size_t irq;
-};
-struct platform_device *__init mxs_add_duart(
- const struct mxs_duart_data *data);
+int __init mxs_add_duart(const struct amba_device *dev);
/* fec */
#include <linux/fec.h>