From: w.sang@pengutronix.de (Wolfram Sang)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] arm: mxs: add i2c-devices
Date: Fri, 18 Feb 2011 18:18:27 +0100 [thread overview]
Message-ID: <1298049507-6987-3-git-send-email-w.sang@pengutronix.de> (raw)
In-Reply-To: <1298049507-6987-1-git-send-email-w.sang@pengutronix.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
---
arch/arm/mach-mxs/devices-mx28.h | 3 +
arch/arm/mach-mxs/devices/Kconfig | 3 +
arch/arm/mach-mxs/devices/Makefile | 1 +
arch/arm/mach-mxs/devices/platform-i2c.c | 56 +++++++++++++++++++++++
arch/arm/mach-mxs/include/mach/devices-common.h | 9 ++++
5 files changed, 72 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-mxs/devices/platform-i2c.c
diff --git a/arch/arm/mach-mxs/devices-mx28.h b/arch/arm/mach-mxs/devices-mx28.h
index 3b18304..c581b26 100644
--- a/arch/arm/mach-mxs/devices-mx28.h
+++ b/arch/arm/mach-mxs/devices-mx28.h
@@ -32,3 +32,6 @@ extern const struct mxs_flexcan_data mx28_flexcan_data[] __initconst;
mxs_add_flexcan(&mx28_flexcan_data[id], pdata)
#define mx28_add_flexcan0(pdata) mx28_add_flexcan(0, pdata)
#define mx28_add_flexcan1(pdata) mx28_add_flexcan(1, pdata)
+
+extern const struct mxs_i2c_data mx28_i2c_data[] __initconst;
+#define mx28_add_i2c(id) mxs_add_i2c(&mx28_i2c_data[id])
diff --git a/arch/arm/mach-mxs/devices/Kconfig b/arch/arm/mach-mxs/devices/Kconfig
index 6c65b67..c9f80e1 100644
--- a/arch/arm/mach-mxs/devices/Kconfig
+++ b/arch/arm/mach-mxs/devices/Kconfig
@@ -11,3 +11,6 @@ config MXS_HAVE_PLATFORM_FEC
config MXS_HAVE_PLATFORM_FLEXCAN
select HAVE_CAN_FLEXCAN if CAN
bool
+
+config MXS_HAVE_PLATFORM_I2C
+ bool
diff --git a/arch/arm/mach-mxs/devices/Makefile b/arch/arm/mach-mxs/devices/Makefile
index a8dc8d5..4fb4d9a 100644
--- a/arch/arm/mach-mxs/devices/Makefile
+++ b/arch/arm/mach-mxs/devices/Makefile
@@ -2,3 +2,4 @@ obj-$(CONFIG_MXS_HAVE_AMBA_DUART) += amba-duart.o
obj-$(CONFIG_MXS_HAVE_PLATFORM_AUART) += platform-auart.o
obj-$(CONFIG_MXS_HAVE_PLATFORM_FEC) += platform-fec.o
obj-$(CONFIG_MXS_HAVE_PLATFORM_FLEXCAN) += platform-flexcan.o
+obj-$(CONFIG_MXS_HAVE_PLATFORM_I2C) += platform-i2c.o
diff --git a/arch/arm/mach-mxs/devices/platform-i2c.c b/arch/arm/mach-mxs/devices/platform-i2c.c
new file mode 100644
index 0000000..22236b2
--- /dev/null
+++ b/arch/arm/mach-mxs/devices/platform-i2c.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2011 Pengutronix
+ * Wolfram Sang <w.sang@pengutronix.de>
+ *
+ * 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/sizes.h>
+#include <mach/mx28.h>
+#include <mach/devices-common.h>
+
+/* helper defines to fix MX23 naming anomaly */
+#define MX23_I2C0_BASE_ADDR MX23_I2C_BASE_ADDR
+#define MX23_INT_I2C0_ERROR MX23_INT_I2C_ERROR
+#define MX23_INT_I2C0_DMA MX23_INT_I2C_DMA
+
+#define mxs_i2c_data_entry_single(soc, _id) \
+ { \
+ .id = _id, \
+ .iobase = soc ## _I2C ## _id ## _BASE_ADDR, \
+ .errirq = soc ## _INT_I2C ## _id ## _ERROR, \
+ .dmairq = soc ## _INT_I2C ## _id ## _DMA, \
+ }
+
+#define mxs_i2c_data_entry(soc, _id) \
+ [_id] = mxs_i2c_data_entry_single(soc, _id)
+
+#ifdef CONFIG_SOC_IMX28
+const struct mxs_i2c_data mx28_i2c_data[] __initconst = {
+ mxs_i2c_data_entry(MX28, 0),
+ mxs_i2c_data_entry(MX28, 1),
+};
+#endif
+
+struct platform_device *__init mxs_add_i2c(const struct mxs_i2c_data *data)
+{
+ struct resource res[] = {
+ {
+ .start = data->iobase,
+ .end = data->iobase + SZ_8K - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = data->errirq,
+ .end = data->errirq,
+ .flags = IORESOURCE_IRQ,
+ }, {
+ .start = data->dmairq,
+ .end = data->dmairq,
+ .flags = IORESOURCE_IRQ,
+ },
+ };
+
+ return mxs_add_platform_device("mxs-i2c", data->id, 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 e7aefb4..e385ece 100644
--- a/arch/arm/mach-mxs/include/mach/devices-common.h
+++ b/arch/arm/mach-mxs/include/mach/devices-common.h
@@ -63,3 +63,12 @@ struct mxs_flexcan_data {
struct platform_device *__init mxs_add_flexcan(
const struct mxs_flexcan_data *data,
const struct flexcan_platform_data *pdata);
+
+/* i2c */
+struct mxs_i2c_data {
+ int id;
+ resource_size_t iobase;
+ resource_size_t errirq;
+ resource_size_t dmairq;
+};
+struct platform_device * __init mxs_add_i2c(const struct mxs_i2c_data *data);
--
1.7.2.3
next prev parent reply other threads:[~2011-02-18 17:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-18 17:18 [PATCH 0/2] mach-mxs: dynamic device creation for i.MX28-i2c Wolfram Sang
2011-02-18 17:18 ` [PATCH 1/2] arm: mx23: names of interrupts and base address should match for I2C Wolfram Sang
2011-02-18 17:18 ` Wolfram Sang [this message]
2011-02-18 21:16 ` [PATCH 2/2] arm: mxs: add i2c-devices Uwe Kleine-König
2011-02-22 7:30 ` Shawn Guo
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