[PATCH 0/3] Add support for Technologic Systems TS-5400

[PATCH 0/3] Add support for Technologic Systems TS-5400

[Vivien Didelot]

This patchset extends the TS-5500 platform driver to support the very similar
Technologic Systems TS-5400 board (like the others from the TS-5x00 serie).

The TS-5400 also has 2 GPIO blocks, which will be declared in a future patch,
once the gpio-ts5500 driver will be modified accordingly.

Vivien Didelot (3):
  x86: (ts5500) use DEVICE_ATTR_RO macro
  x86: (ts5500) add a name attribute
  x86: (ts5500) add support for TS-5400

 Documentation/ABI/testing/sysfs-platform-ts5500 |  7 ++
 arch/x86/platform/ts5500/ts5500.c               | 94 ++++++++++++++-----------
 2 files changed, 60 insertions(+), 41 deletions(-)

-- 
1.9.1

[PATCH 1/3] x86: (ts5500) use DEVICE_ATTR_RO macro

[Vivien Didelot]

Use the DEVICE_ATTR_RO helper macro to simplify the declaration of
read-only sysfs attributes.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
---
 arch/x86/platform/ts5500/ts5500.c | 50 +++++++++++++++++----------------------
 1 file changed, 22 insertions(+), 28 deletions(-)

diff --git a/arch/x86/platform/ts5500/ts5500.c b/arch/x86/platform/ts5500/ts5500.c
index 9471b94..1bbf17b 100644
--- a/arch/x86/platform/ts5500/ts5500.c
+++ b/arch/x86/platform/ts5500/ts5500.c
@@ -147,45 +147,39 @@ cleanup:
 	return ret;
 }
 
-static ssize_t ts5500_show_id(struct device *dev,
-			      struct device_attribute *attr, char *buf)
+static ssize_t id_show(struct device *dev, struct device_attribute *attr,
+		char *buf)
 {
 	struct ts5500_sbc *sbc = dev_get_drvdata(dev);
 
 	return sprintf(buf, "0x%.2x\n", sbc->id);
 }
+static DEVICE_ATTR_RO(id);
 
-static ssize_t ts5500_show_jumpers(struct device *dev,
-				   struct device_attribute *attr,
-				   char *buf)
+static ssize_t jumpers_show(struct device *dev, struct device_attribute *attr,
+		char *buf)
 {
 	struct ts5500_sbc *sbc = dev_get_drvdata(dev);
 
 	return sprintf(buf, "0x%.2x\n", sbc->jumpers >> 1);
 }
-
-#define TS5500_SHOW(field)					\
-	static ssize_t ts5500_show_##field(struct device *dev,	\
-			struct device_attribute *attr,		\
-			char *buf)				\
-	{							\
-		struct ts5500_sbc *sbc = dev_get_drvdata(dev);	\
-		return sprintf(buf, "%d\n", sbc->field);	\
-	}
-
-TS5500_SHOW(sram)
-TS5500_SHOW(rs485)
-TS5500_SHOW(adc)
-TS5500_SHOW(ereset)
-TS5500_SHOW(itr)
-
-static DEVICE_ATTR(id, S_IRUGO, ts5500_show_id, NULL);
-static DEVICE_ATTR(jumpers, S_IRUGO, ts5500_show_jumpers, NULL);
-static DEVICE_ATTR(sram, S_IRUGO, ts5500_show_sram, NULL);
-static DEVICE_ATTR(rs485, S_IRUGO, ts5500_show_rs485, NULL);
-static DEVICE_ATTR(adc, S_IRUGO, ts5500_show_adc, NULL);
-static DEVICE_ATTR(ereset, S_IRUGO, ts5500_show_ereset, NULL);
-static DEVICE_ATTR(itr, S_IRUGO, ts5500_show_itr, NULL);
+static DEVICE_ATTR_RO(jumpers);
+
+#define TS5500_ATTR_BOOL(_field)					\
+	static ssize_t _field##_show(struct device *dev,		\
+			struct device_attribute *attr, char *buf)	\
+	{								\
+		struct ts5500_sbc *sbc = dev_get_drvdata(dev);		\
+									\
+		return sprintf(buf, "%d\n", sbc->_field);		\
+	}								\
+	static DEVICE_ATTR_RO(_field)
+
+TS5500_ATTR_BOOL(sram);
+TS5500_ATTR_BOOL(rs485);
+TS5500_ATTR_BOOL(adc);
+TS5500_ATTR_BOOL(ereset);
+TS5500_ATTR_BOOL(itr);
 
 static struct attribute *ts5500_attributes[] = {
 	&dev_attr_id.attr,
-- 
1.9.1

[PATCH 2/3] x86: (ts5500) add a name attribute

[Vivien Didelot]

Add a new "name" attribute to the ts5500 sysfs group, to clarify which
supported board model it is.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
---
 Documentation/ABI/testing/sysfs-platform-ts5500 |  7 +++++++
 arch/x86/platform/ts5500/ts5500.c               | 23 ++++++++++++++++++-----
 2 files changed, 25 insertions(+), 5 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-platform-ts5500 b/Documentation/ABI/testing/sysfs-platform-ts5500
index c88375a..e685957 100644
--- a/Documentation/ABI/testing/sysfs-platform-ts5500
+++ b/Documentation/ABI/testing/sysfs-platform-ts5500
@@ -30,6 +30,13 @@ Description:
 		the corresponding bit is set. For instance, 0x0e means jumpers
 		2, 3 and 4 are set.
 
+What:		/sys/devices/platform/ts5500/name
+Date:		July 2014
+KernelVersion:	3.16
+Contact:	"Savoir-faire Linux Inc." <kernel@savoirfairelinux.com>
+Description:
+		Model name of the TS board, e.g. "TS-5500".
+
 What:		/sys/devices/platform/ts5500/rs485
 Date:		January 2013
 KernelVersion:	3.7
diff --git a/arch/x86/platform/ts5500/ts5500.c b/arch/x86/platform/ts5500/ts5500.c
index 1bbf17b..4eb8eea 100644
--- a/arch/x86/platform/ts5500/ts5500.c
+++ b/arch/x86/platform/ts5500/ts5500.c
@@ -1,7 +1,7 @@
 /*
  * Technologic Systems TS-5500 Single Board Computer support
  *
- * Copyright (C) 2013 Savoir-faire Linux Inc.
+ * Copyright (C) 2013-2014 Savoir-faire Linux Inc.
  *	Vivien Didelot <vivien.didelot@savoirfairelinux.com>
  *
  * This program is free software; you can redistribute it and/or modify it under
@@ -66,6 +66,7 @@
 
 /**
  * struct ts5500_sbc - TS-5500 board description
+ * @name:	Board model name.
  * @id:		Board product ID.
  * @sram:	Flag for SRAM option.
  * @rs485:	Flag for RS-485 option.
@@ -75,6 +76,7 @@
  * @jumpers:	Bitfield for jumpers' state.
  */
 struct ts5500_sbc {
+	const char *name;
 	int	id;
 	bool	sram;
 	bool	rs485;
@@ -122,13 +124,14 @@ static int __init ts5500_detect_config(struct ts5500_sbc *sbc)
 	if (!request_region(TS5500_PRODUCT_CODE_ADDR, 4, "ts5500"))
 		return -EBUSY;
 
-	tmp = inb(TS5500_PRODUCT_CODE_ADDR);
-	if (tmp != TS5500_PRODUCT_CODE) {
-		pr_err("This platform is not a TS-5500 (found ID 0x%x)\n", tmp);
+	sbc->id = inb(TS5500_PRODUCT_CODE_ADDR);
+	if (sbc->id == TS5500_PRODUCT_CODE) {
+		sbc->name = "TS-5500";
+	} else {
+		pr_err("ts5500: unknown product code 0x%x\n", sbc->id);
 		ret = -ENODEV;
 		goto cleanup;
 	}
-	sbc->id = tmp;
 
 	tmp = inb(TS5500_SRAM_RS485_ADC_ADDR);
 	sbc->sram = tmp & TS5500_SRAM;
@@ -147,6 +150,15 @@ cleanup:
 	return ret;
 }
 
+static ssize_t name_show(struct device *dev, struct device_attribute *attr,
+		char *buf)
+{
+	struct ts5500_sbc *sbc = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%s\n", sbc->name);
+}
+static DEVICE_ATTR_RO(name);
+
 static ssize_t id_show(struct device *dev, struct device_attribute *attr,
 		char *buf)
 {
@@ -183,6 +195,7 @@ TS5500_ATTR_BOOL(itr);
 
 static struct attribute *ts5500_attributes[] = {
 	&dev_attr_id.attr,
+	&dev_attr_name.attr,
 	&dev_attr_jumpers.attr,
 	&dev_attr_sram.attr,
 	&dev_attr_rs485.attr,
-- 
1.9.1

[PATCH 3/3] x86: (ts5500) add support for TS-5400

[Vivien Didelot]

This patch extends the TS-5500 platform driver to support the similar
Technologic Systems TS-5400 Single Board Computer.

http://wiki.embeddedarm.com/wiki/TS-5400

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
---
 arch/x86/platform/ts5500/ts5500.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/arch/x86/platform/ts5500/ts5500.c b/arch/x86/platform/ts5500/ts5500.c
index 4eb8eea..baf16e7 100644
--- a/arch/x86/platform/ts5500/ts5500.c
+++ b/arch/x86/platform/ts5500/ts5500.c
@@ -15,8 +15,8 @@
  * state or available options. For further information about sysfs entries, see
  * Documentation/ABI/testing/sysfs-platform-ts5500.
  *
- * This code actually supports the TS-5500 platform, but it may be extended to
- * support similar Technologic Systems x86-based platforms, such as the TS-5600.
+ * This code may be extended to support similar x86-based platforms.
+ * Actually, the TS-5500 and TS-5400 are supported.
  */
 
 #include <linux/delay.h>
@@ -32,6 +32,7 @@
 /* Product code register */
 #define TS5500_PRODUCT_CODE_ADDR	0x74
 #define TS5500_PRODUCT_CODE		0x60	/* TS-5500 product code */
+#define TS5400_PRODUCT_CODE		0x40	/* TS-5400 product code */
 
 /* SRAM/RS-485/ADC options, and RS-485 RTS/Automatic RS-485 flags register */
 #define TS5500_SRAM_RS485_ADC_ADDR	0x75
@@ -127,6 +128,8 @@ static int __init ts5500_detect_config(struct ts5500_sbc *sbc)
 	sbc->id = inb(TS5500_PRODUCT_CODE_ADDR);
 	if (sbc->id == TS5500_PRODUCT_CODE) {
 		sbc->name = "TS-5500";
+	} else if (sbc->id == TS5400_PRODUCT_CODE) {
+		sbc->name = "TS-5400";
 	} else {
 		pr_err("ts5500: unknown product code 0x%x\n", sbc->id);
 		ret = -ENODEV;
@@ -318,12 +321,14 @@ static int __init ts5500_init(void)
 	if (err)
 		goto error;
 
-	ts5500_dio1_pdev.dev.parent = &pdev->dev;
-	if (platform_device_register(&ts5500_dio1_pdev))
-		dev_warn(&pdev->dev, "DIO1 block registration failed\n");
-	ts5500_dio2_pdev.dev.parent = &pdev->dev;
-	if (platform_device_register(&ts5500_dio2_pdev))
-		dev_warn(&pdev->dev, "DIO2 block registration failed\n");
+	if (sbc->id == TS5500_PRODUCT_CODE) {
+		ts5500_dio1_pdev.dev.parent = &pdev->dev;
+		if (platform_device_register(&ts5500_dio1_pdev))
+			dev_warn(&pdev->dev, "DIO1 block registration failed\n");
+		ts5500_dio2_pdev.dev.parent = &pdev->dev;
+		if (platform_device_register(&ts5500_dio2_pdev))
+			dev_warn(&pdev->dev, "DIO2 block registration failed\n");
+	}
 
 	if (led_classdev_register(&pdev->dev, &ts5500_led_cdev))
 		dev_warn(&pdev->dev, "LED registration failed\n");
-- 
1.9.1

[tip:x86/platform] x86/platform/ts5500: Use the DEVICE_ATTR_RO() macro

[tip-bot for Vivien Didelot]

Commit-ID:  1d2408754d2c1376d67c00852548758e1ec2a94c
Gitweb:     http://git.kernel.org/tip/1d2408754d2c1376d67c00852548758e1ec2a94c
Author:     Vivien Didelot <vivien.didelot@savoirfairelinux.com>
AuthorDate: Tue, 8 Jul 2014 18:57:47 -0400
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 16 Jul 2014 21:17:40 +0200

x86/platform/ts5500: Use the DEVICE_ATTR_RO() macro

Use the DEVICE_ATTR_RO() helper macro to simplify the declaration
of read-only sysfs attributes in the TS5500 code..

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Savoir-faire Linux Inc. <kernel@savoirfairelinux.com>
Link: http://lkml.kernel.org/r/1404860269-11837-2-git-send-email-vivien.didelot@savoirfairelinux.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/platform/ts5500/ts5500.c | 50 +++++++++++++++++----------------------
 1 file changed, 22 insertions(+), 28 deletions(-)

diff --git a/arch/x86/platform/ts5500/ts5500.c b/arch/x86/platform/ts5500/ts5500.c
index 9471b94..1bbf17b 100644
--- a/arch/x86/platform/ts5500/ts5500.c
+++ b/arch/x86/platform/ts5500/ts5500.c
@@ -147,45 +147,39 @@ cleanup:
 	return ret;
 }
 
-static ssize_t ts5500_show_id(struct device *dev,
-			      struct device_attribute *attr, char *buf)
+static ssize_t id_show(struct device *dev, struct device_attribute *attr,
+		char *buf)
 {
 	struct ts5500_sbc *sbc = dev_get_drvdata(dev);
 
 	return sprintf(buf, "0x%.2x\n", sbc->id);
 }
+static DEVICE_ATTR_RO(id);
 
-static ssize_t ts5500_show_jumpers(struct device *dev,
-				   struct device_attribute *attr,
-				   char *buf)
+static ssize_t jumpers_show(struct device *dev, struct device_attribute *attr,
+		char *buf)
 {
 	struct ts5500_sbc *sbc = dev_get_drvdata(dev);
 
 	return sprintf(buf, "0x%.2x\n", sbc->jumpers >> 1);
 }
-
-#define TS5500_SHOW(field)					\
-	static ssize_t ts5500_show_##field(struct device *dev,	\
-			struct device_attribute *attr,		\
-			char *buf)				\
-	{							\
-		struct ts5500_sbc *sbc = dev_get_drvdata(dev);	\
-		return sprintf(buf, "%d\n", sbc->field);	\
-	}
-
-TS5500_SHOW(sram)
-TS5500_SHOW(rs485)
-TS5500_SHOW(adc)
-TS5500_SHOW(ereset)
-TS5500_SHOW(itr)
-
-static DEVICE_ATTR(id, S_IRUGO, ts5500_show_id, NULL);
-static DEVICE_ATTR(jumpers, S_IRUGO, ts5500_show_jumpers, NULL);
-static DEVICE_ATTR(sram, S_IRUGO, ts5500_show_sram, NULL);
-static DEVICE_ATTR(rs485, S_IRUGO, ts5500_show_rs485, NULL);
-static DEVICE_ATTR(adc, S_IRUGO, ts5500_show_adc, NULL);
-static DEVICE_ATTR(ereset, S_IRUGO, ts5500_show_ereset, NULL);
-static DEVICE_ATTR(itr, S_IRUGO, ts5500_show_itr, NULL);
+static DEVICE_ATTR_RO(jumpers);
+
+#define TS5500_ATTR_BOOL(_field)					\
+	static ssize_t _field##_show(struct device *dev,		\
+			struct device_attribute *attr, char *buf)	\
+	{								\
+		struct ts5500_sbc *sbc = dev_get_drvdata(dev);		\
+									\
+		return sprintf(buf, "%d\n", sbc->_field);		\
+	}								\
+	static DEVICE_ATTR_RO(_field)
+
+TS5500_ATTR_BOOL(sram);
+TS5500_ATTR_BOOL(rs485);
+TS5500_ATTR_BOOL(adc);
+TS5500_ATTR_BOOL(ereset);
+TS5500_ATTR_BOOL(itr);
 
 static struct attribute *ts5500_attributes[] = {
 	&dev_attr_id.attr,

[tip:x86/platform] x86/platform/ts5500: Add a 'name' sysfs attribute

[tip-bot for Vivien Didelot]

Commit-ID:  84e288d41871cfb7a21cb7e6dee9e3884b59b25f
Gitweb:     http://git.kernel.org/tip/84e288d41871cfb7a21cb7e6dee9e3884b59b25f
Author:     Vivien Didelot <vivien.didelot@savoirfairelinux.com>
AuthorDate: Tue, 8 Jul 2014 18:57:48 -0400
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 16 Jul 2014 21:17:41 +0200

x86/platform/ts5500: Add a 'name' sysfs attribute

Add a new "name" attribute to the TS5500 sysfs group, to clarify
which supported board model it is.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Savoir-faire Linux Inc. <kernel@savoirfairelinux.com>
Link: http://lkml.kernel.org/r/1404860269-11837-3-git-send-email-vivien.didelot@savoirfairelinux.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 Documentation/ABI/testing/sysfs-platform-ts5500 |  7 +++++++
 arch/x86/platform/ts5500/ts5500.c               | 23 ++++++++++++++++++-----
 2 files changed, 25 insertions(+), 5 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-platform-ts5500 b/Documentation/ABI/testing/sysfs-platform-ts5500
index c88375a..e685957 100644
--- a/Documentation/ABI/testing/sysfs-platform-ts5500
+++ b/Documentation/ABI/testing/sysfs-platform-ts5500
@@ -30,6 +30,13 @@ Description:
 		the corresponding bit is set. For instance, 0x0e means jumpers
 		2, 3 and 4 are set.
 
+What:		/sys/devices/platform/ts5500/name
+Date:		July 2014
+KernelVersion:	3.16
+Contact:	"Savoir-faire Linux Inc." <kernel@savoirfairelinux.com>
+Description:
+		Model name of the TS board, e.g. "TS-5500".
+
 What:		/sys/devices/platform/ts5500/rs485
 Date:		January 2013
 KernelVersion:	3.7
diff --git a/arch/x86/platform/ts5500/ts5500.c b/arch/x86/platform/ts5500/ts5500.c
index 1bbf17b..4eb8eea 100644
--- a/arch/x86/platform/ts5500/ts5500.c
+++ b/arch/x86/platform/ts5500/ts5500.c
@@ -1,7 +1,7 @@
 /*
  * Technologic Systems TS-5500 Single Board Computer support
  *
- * Copyright (C) 2013 Savoir-faire Linux Inc.
+ * Copyright (C) 2013-2014 Savoir-faire Linux Inc.
  *	Vivien Didelot <vivien.didelot@savoirfairelinux.com>
  *
  * This program is free software; you can redistribute it and/or modify it under
@@ -66,6 +66,7 @@
 
 /**
  * struct ts5500_sbc - TS-5500 board description
+ * @name:	Board model name.
  * @id:		Board product ID.
  * @sram:	Flag for SRAM option.
  * @rs485:	Flag for RS-485 option.
@@ -75,6 +76,7 @@
  * @jumpers:	Bitfield for jumpers' state.
  */
 struct ts5500_sbc {
+	const char *name;
 	int	id;
 	bool	sram;
 	bool	rs485;
@@ -122,13 +124,14 @@ static int __init ts5500_detect_config(struct ts5500_sbc *sbc)
 	if (!request_region(TS5500_PRODUCT_CODE_ADDR, 4, "ts5500"))
 		return -EBUSY;
 
-	tmp = inb(TS5500_PRODUCT_CODE_ADDR);
-	if (tmp != TS5500_PRODUCT_CODE) {
-		pr_err("This platform is not a TS-5500 (found ID 0x%x)\n", tmp);
+	sbc->id = inb(TS5500_PRODUCT_CODE_ADDR);
+	if (sbc->id == TS5500_PRODUCT_CODE) {
+		sbc->name = "TS-5500";
+	} else {
+		pr_err("ts5500: unknown product code 0x%x\n", sbc->id);
 		ret = -ENODEV;
 		goto cleanup;
 	}
-	sbc->id = tmp;
 
 	tmp = inb(TS5500_SRAM_RS485_ADC_ADDR);
 	sbc->sram = tmp & TS5500_SRAM;
@@ -147,6 +150,15 @@ cleanup:
 	return ret;
 }
 
+static ssize_t name_show(struct device *dev, struct device_attribute *attr,
+		char *buf)
+{
+	struct ts5500_sbc *sbc = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%s\n", sbc->name);
+}
+static DEVICE_ATTR_RO(name);
+
 static ssize_t id_show(struct device *dev, struct device_attribute *attr,
 		char *buf)
 {
@@ -183,6 +195,7 @@ TS5500_ATTR_BOOL(itr);
 
 static struct attribute *ts5500_attributes[] = {
 	&dev_attr_id.attr,
+	&dev_attr_name.attr,
 	&dev_attr_jumpers.attr,
 	&dev_attr_sram.attr,
 	&dev_attr_rs485.attr,

[tip:x86/platform] x86/platform/ts5500: Add support for TS-5400 boards

[tip-bot for Vivien Didelot]

Commit-ID:  832fcc899a90cce54eb5e47c7fd099eacc0130da
Gitweb:     http://git.kernel.org/tip/832fcc899a90cce54eb5e47c7fd099eacc0130da
Author:     Vivien Didelot <vivien.didelot@savoirfairelinux.com>
AuthorDate: Tue, 8 Jul 2014 18:57:49 -0400
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 16 Jul 2014 21:17:42 +0200

x86/platform/ts5500: Add support for TS-5400 boards

This patch extends the TS-5500 platform driver to support the
similar Technologic Systems TS-5400 Single Board Computer:

  http://wiki.embeddedarm.com/wiki/TS-5400

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Savoir-faire Linux Inc. <kernel@savoirfairelinux.com>
Link: http://lkml.kernel.org/r/1404860269-11837-4-git-send-email-vivien.didelot@savoirfairelinux.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/platform/ts5500/ts5500.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/arch/x86/platform/ts5500/ts5500.c b/arch/x86/platform/ts5500/ts5500.c
index 4eb8eea..baf16e7 100644
--- a/arch/x86/platform/ts5500/ts5500.c
+++ b/arch/x86/platform/ts5500/ts5500.c
@@ -15,8 +15,8 @@
  * state or available options. For further information about sysfs entries, see
  * Documentation/ABI/testing/sysfs-platform-ts5500.
  *
- * This code actually supports the TS-5500 platform, but it may be extended to
- * support similar Technologic Systems x86-based platforms, such as the TS-5600.
+ * This code may be extended to support similar x86-based platforms.
+ * Actually, the TS-5500 and TS-5400 are supported.
  */
 
 #include <linux/delay.h>
@@ -32,6 +32,7 @@
 /* Product code register */
 #define TS5500_PRODUCT_CODE_ADDR	0x74
 #define TS5500_PRODUCT_CODE		0x60	/* TS-5500 product code */
+#define TS5400_PRODUCT_CODE		0x40	/* TS-5400 product code */
 
 /* SRAM/RS-485/ADC options, and RS-485 RTS/Automatic RS-485 flags register */
 #define TS5500_SRAM_RS485_ADC_ADDR	0x75
@@ -127,6 +128,8 @@ static int __init ts5500_detect_config(struct ts5500_sbc *sbc)
 	sbc->id = inb(TS5500_PRODUCT_CODE_ADDR);
 	if (sbc->id == TS5500_PRODUCT_CODE) {
 		sbc->name = "TS-5500";
+	} else if (sbc->id == TS5400_PRODUCT_CODE) {
+		sbc->name = "TS-5400";
 	} else {
 		pr_err("ts5500: unknown product code 0x%x\n", sbc->id);
 		ret = -ENODEV;
@@ -318,12 +321,14 @@ static int __init ts5500_init(void)
 	if (err)
 		goto error;
 
-	ts5500_dio1_pdev.dev.parent = &pdev->dev;
-	if (platform_device_register(&ts5500_dio1_pdev))
-		dev_warn(&pdev->dev, "DIO1 block registration failed\n");
-	ts5500_dio2_pdev.dev.parent = &pdev->dev;
-	if (platform_device_register(&ts5500_dio2_pdev))
-		dev_warn(&pdev->dev, "DIO2 block registration failed\n");
+	if (sbc->id == TS5500_PRODUCT_CODE) {
+		ts5500_dio1_pdev.dev.parent = &pdev->dev;
+		if (platform_device_register(&ts5500_dio1_pdev))
+			dev_warn(&pdev->dev, "DIO1 block registration failed\n");
+		ts5500_dio2_pdev.dev.parent = &pdev->dev;
+		if (platform_device_register(&ts5500_dio2_pdev))
+			dev_warn(&pdev->dev, "DIO2 block registration failed\n");
+	}
 
 	if (led_classdev_register(&pdev->dev, &ts5500_led_cdev))
 		dev_warn(&pdev->dev, "LED registration failed\n");