On 5/29/2014 12:14 AM, Greg KH wrote:
On Wed, May 28, 2014 at 02:27:14PM +0530, Satish Patel wrote:
TDA8026 is a SmartCard PHY from NXP.
The PHY interfaces with the main processor over the
I2C interface and acts as a slave device.
The driver also exposes the phy interface
(defined@include/linux/sc_phy.h) for SmartCard controller.
Controller uses this interface to communicate with smart card
inserted to the phy's slot.
Note: gpio irq is not validated as I do not have device with that.
I have validated interrupt with dedicated interrupt line on my device.
Signed-off-by: Satish Patel <satish.patel@xxxxxx>
---
Documentation/devicetree/bindings/misc/tda8026.txt | 19 +
drivers/misc/Kconfig | 7 +
drivers/misc/Makefile | 1 +
drivers/misc/tda8026.c | 1258 ++++++++++++++++++++
4 files changed, 1285 insertions(+)
create mode 100644 Documentation/devicetree/bindings/misc/tda8026.txt
create mode 100644 drivers/misc/tda8026.c
diff --git a/Documentation/devicetree/bindings/misc/tda8026.txt b/Documentation/devicetree/bindings/misc/tda8026.txt
new file mode 100644
index 0000000..f115c9c
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/tda8026.txt
@@ -0,0 +1,19 @@
+TDA8026 smart card slot interface
+
+This is an i2c based smart card interface device forming the electrical
+interface between a microcontroller and smart cards. This device supports
+asynchronous cards (micro controller-based IC cards) as well as synchronous
+cards (mainly memory cards)
+
+Required properties:
+- compatible: "nxp,tda8026"
+- shutdown-gpio = GPIO pin mapping for SDWNN pin
+- reg = i2c interface address
+
+
+Example:
+tda8026: tda8026@48 {
+ compatible = "nxp,tda8026";
+ reg = <0x48>;
+ shutdown-gpio = <&gpio5 19 GPIO_ACTIVE_HIGH>;/* Bank5, pin19 */
+ };
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 8baff0e..80b21d7 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -515,6 +515,13 @@ config SRAM
the genalloc API. It is supposed to be used for small on-chip SRAM
areas found on many SoCs.
+config NXP_TDA8026_PHY
+ tristate "NXP PHY Driver for Smart Card PHY"
+ depends on I2C=y
+ help
+ If you say yes here you get support for the TDA8026 Smart card PHY
+ with I2C interface.
+
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
source "drivers/misc/cb710/Kconfig"
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 7eb4b69..f262c0b 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -55,3 +55,4 @@ obj-$(CONFIG_SRAM) += sram.o
obj-y += mic/
obj-$(CONFIG_GENWQE) += genwqe/
obj-$(CONFIG_ECHO) += echo/
+obj-$(CONFIG_NXP_TDA8026_PHY) += tda8026.o
diff --git a/drivers/misc/tda8026.c b/drivers/misc/tda8026.c
new file mode 100644
index 0000000..38df33e
--- /dev/null
+++ b/drivers/misc/tda8026.c
@@ -0,0 +1,1258 @@
+/*
+ * tda8026.c - TDA8026 PHY driver for NXP Smart card PHY
+ *
+ *
+ * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/mfd/core.h>
+#include <linux/notifier.h>
+#include <linux/sc_phy.h>
+#include <linux/of_gpio.h>
+#include <linux/of_device.h>
+#include <linux/delay.h>
I think you just broke the build if this driver is enabled now right?
Not good :(
Before sending, I have applied these patches to "v3.15-rc7" and build
with both the option ti-usim & tda8026 as module, as well as part of
kernel. Any specific tree you would like me to rebase these patches against.
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