* [PATCH v2 2/5] misc: tda8026: Add NXP TDA8026 PHY driver
2014-01-20 4:33 [PATCH v2 0/5] Smart Card(SC) interface, TI USIM & NxP SC phy driver Satish Patel
2014-01-20 4:33 ` [PATCH v2 1/5] sc_phy:SmartCard(SC) PHY interface to SC controller Satish Patel
@ 2014-01-20 4:33 ` Satish Patel
2014-01-20 4:33 ` [PATCH v2 3/5] char: ti-usim: Add driver for USIM module on AM43xx Satish Patel
` (3 subsequent siblings)
5 siblings, 0 replies; 13+ messages in thread
From: Satish Patel @ 2014-01-20 4:33 UTC (permalink / raw)
To: linux-kernel, linux-arm-kernel, linux-omap, devicetree, gregkh,
rob
Cc: Satish Patel
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@ti.com>
---
Documentation/devicetree/bindings/misc/tda8026.txt | 19 +
drivers/misc/Kconfig | 7 +
drivers/misc/Makefile | 1 +
drivers/misc/tda8026.c | 1255 ++++++++++++++++++++
4 files changed, 1282 insertions(+), 0 deletions(-)
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 a3e291d..bb94a6f 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 f45473e..24374dd 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -53,3 +53,4 @@ obj-$(CONFIG_VMWARE_VMCI) += vmw_vmci/
obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lattice-ecp3-config.o
obj-$(CONFIG_SRAM) += sram.o
obj-y += mic/
+obj-$(CONFIG_NXP_TDA8026_PHY) += tda8026.o
diff --git a/drivers/misc/tda8026.c b/drivers/misc/tda8026.c
new file mode 100644
index 0000000..6a77686
--- /dev/null
+++ b/drivers/misc/tda8026.c
@@ -0,0 +1,1255 @@
+/*
+ * 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>
+
+#define TDA8026_MAX_SLOTS (5)
+#define TDA8026_NUM_SAM_SLOTS (4)
+#define TDA8026_USERCARD_SLOT (1)
+
+#define TDA8026_CSB_ADDR (0x24)
+#define TDA8026_REG0_ADDR (0x20)
+#define TDA8026_REG1_ADDR (0x21)
+#define TDA8026_SLEWRATE_ADDR (0x20)
+#define TDA8026_PRODVER_ADDR (0x20)
+#define TDA8026_INTSTAT_ADDR (0x21)
+
+#define TDA8026_PHY_PRODUCT_VERSION (0xC2)
+
+/* CSB register values */
+#define TDA8026_CSB_PV_INTSTAT_VAL (0x0)
+#define TDA8026_CSB_SLEWRATE_VAL (0x6)
+
+/* Slot REG0 read mode bit fields */
+#define TDA8026_REG0_ACTIVE_MASK (0x80)
+#define TDA8026_REG0_EARLY_MASK (0x40)
+#define TDA8026_REG0_MUTE_MASK (0x20)
+#define TDA8026_REG0_PROT_MASK (0x10)
+#define TDA8026_REG0_SUPL_MASK (0x08)
+#define TDA8026_REG0_CLKSW_MASK (0x04)
+#define TDA8026_REG0_PREL_MASK (0x02)
+#define TDA8026_REG0_PRES_MASK (0x01)
+
+/* Slot REG0 write mode bit fields */
+#define TDA8026_REG0_VCC1V8_MASK (0x80)
+#define TDA8026_REG0_IOEN_MASK (0x40)
+
+#define TDA8026_REG0_REG10_MASK (0x30)
+#define TDA8026_REG0_REG10_SHIFT (4)
+#define TDA8026_REG0_REG10_CFG_VAL (0x0)
+#define TDA8026_REG0_REG10_D_VAL (0x1)
+#define TDA8026_REG0_REG10_CMSB_VAL (0x2)
+#define TDA8026_REG0_REG10_CLSB_VAL (0x3)
+
+#define TDA8026_REG0_PDWN_MASK (0x08)
+#define TDA8026_REG0_5V3VN_MASK (0x04)
+#define TDA8026_REG0_WARM_RESET_MASK (0x02)
+#define TDA8026_REG0_START_MASK (0x01)
+
+/* Slot REG1 CFG bit fields REG[1:0] = 00b */
+#define TDA8026_REG1CFG_CFGP2_MASK (0x80)
+#define TDA8026_REG1CFG_RSTIN_MASK (0x40)
+#define TDA8026_REG1CFG_C8_MASK (0x20)
+#define TDA8026_REG1CFG_C4_MASK (0x10)
+#define TDA8026_REG1CFG_CLKPD_MASK (0x0C)
+#define TDA8026_REG1CFG_CLKPD_SHIFT (2)
+#define TDA8026_REG1CFG_CLKDIV_MASK (0x03)
+#define TDA8026_REG1CFG_CLKDIV_SHIFT (0)
+
+/* Slew rate register bit fields */
+#define TDA8026_SR_CLKSR_SLOT0_MASK 0x0C
+#define TDA8026_SR_CLKSR_SLOT0_SHIFT 0x2
+#define TDA8026_SR_IOSR_SLOT0_MASK 0x3
+#define TDA8026_SR_IOSR_SLOT0_SHIFT 0x0
+
+#define TDA8026_SR_CLKSR_SLOT2TO5_MASK 0xC0
+#define TDA8026_SR_CLKSR_SLOT2TO5_SHIFT 0x6
+#define TDA8026_SR_IOSR_SLOT2TO5_MASK 0x30
+#define TDA8026_SR_IOSR_SLOT2TO5_SHIFT 0x4
+
+#define TDA8026_MIN_EARLY_CYCLE (200)
+
+struct tda8026 {
+ /* device pointer */
+ struct device *dev;
+
+ /* For device IO interfaces: I2C or SPI */
+ void *control_data;
+ /* Store a shadow of Slot Register 0 as it cannot be read */
+ u8 reg0[TDA8026_MAX_SLOTS];
+ int irq;
+ int notify;
+ int shutdown_gpio;
+ int enable;
+};
+
+static BLOCKING_NOTIFIER_HEAD(tda8026_notifier_list);
+
+static int tda8026_i2c_read(struct tda8026 *tda8026, u8 reg,
+ int bytes, u8 *dest)
+{
+ struct i2c_client *i2c = tda8026->control_data;
+ struct i2c_msg xfer;
+ int ret;
+
+ /* We need to read from the slave address itself, as there
+ * is no separate register to be accessed in TDA8026
+ */
+
+ xfer.addr = reg;
+ xfer.flags = I2C_M_RD;
+ xfer.len = bytes;
+ xfer.buf = dest;
+
+ ret = i2c_transfer(i2c->adapter, &xfer, 1);
+ if (ret < 0)
+ dev_err(tda8026->dev, "Read [0x%x] Error %d\n", reg, ret);
+
+ return ret;
+}
+
+static int tda8026_i2c_write(struct tda8026 *tda8026, u8 reg,
+ int bytes, u8 *src)
+{
+ struct i2c_client *i2c = tda8026->control_data;
+ struct i2c_msg xfer;
+ int ret;
+
+ /* We have to write to the slave address itself, as
+ * there is no separate register to be accessed in TDA8026
+ */
+ xfer.addr = reg;
+ xfer.flags = 0;
+ xfer.len = bytes;
+ xfer.buf = src;
+
+ ret = i2c_transfer(i2c->adapter, &xfer, 1);
+ if (ret < 0)
+ dev_err(tda8026->dev, "Write [0x%x] Error %d\n", reg, ret);
+
+ return ret;
+}
+
+/* put the phy in shutdown mode, which in turn deactivate
+ * all the cards in the slot and card pins are forced to 0V
+ */
+static inline void tda8026_disable(struct tda8026 *tda8026)
+{
+ dev_dbg(tda8026->dev, "tda8026_disable!!!!");
+ tda8026->enable = 0;
+ if (gpio_is_valid(tda8026->shutdown_gpio))
+ gpio_set_value(tda8026->shutdown_gpio, 0);
+}
+
+/* exit from shutdown mode */
+static inline void tda8026_enable(struct tda8026 *tda8026)
+{
+ dev_dbg(tda8026->dev, "tda8026_enable!!!!");
+ tda8026->enable = 1;
+ if (gpio_is_valid(tda8026->shutdown_gpio))
+ gpio_set_value(tda8026->shutdown_gpio, 1);
+ /* Added dealy to stabilized phy state after pulling shutdown line */
+ mdelay(100);
+}
+
+/*
+ * Select the card slot to communicate with the card
+ * Note that card slots are numbered from 0 in software.
+ * However TDA8026 PHY numbers the slot starting 1.
+ */
+static inline int tda8026_select_slot(struct tda8026 *tda8026, u8 slot)
+{
+ int ret = 0;
+
+ /* In SW slot starts from 0, in TDA8026 it starts from 1 */
+ slot = slot + 1;
+ ret = tda8026_i2c_write(tda8026, TDA8026_CSB_ADDR, 1, &slot);
+
+ return ret;
+}
+
+static int tda8026_clear_interrupts(struct tda8026 *tda8026)
+{
+ u8 val;
+ u8 status;
+ int ret = 0;
+
+ /* Select the Interrupt register bank */
+ val = TDA8026_CSB_PV_INTSTAT_VAL;
+ tda8026_i2c_write(tda8026, TDA8026_CSB_ADDR, 1, &val);
+
+ /* Read the interrupt status which will tell us the slot */
+ ret = tda8026_i2c_read(tda8026, TDA8026_INTSTAT_ADDR, 1, &status);
+ if (ret < 0)
+ return ret;
+
+ for (val = 1; val > TDA8026_MAX_SLOTS; val++) {
+ /* Program the slot number to the CSB register */
+ ret = tda8026_i2c_write(tda8026, TDA8026_CSB_ADDR, 1, &val);
+ if (ret < 0)
+ return ret;
+
+ ret = tda8026_i2c_read(tda8026, TDA8026_REG0_ADDR, 1, &status);
+ if (ret < 0)
+ return ret;
+ }
+ return ret;
+}
+/*
+ * TDA8026 PHY IRQ handler
+ */
+static irqreturn_t tda8026_irq(int irq, void *irq_data)
+{
+ struct sc_phy *phy_tda8026 = (struct sc_phy *)irq_data;
+ struct tda8026 *tda8026 = (struct tda8026 *)phy_tda8026->pdata;
+ u8 slot;
+ u8 val;
+ u8 status;
+ int ret = 0;
+ int action = 0;
+
+ dev_dbg(tda8026->dev, "tda8026_irq!!");
+
+ if (tda8026->enable == 0) {
+ dev_dbg(tda8026->dev, "phy is disable not serving interrputs!!");
+ /* when, phy is in shutdown mode, it can detect the card insert
+ * event. But if phy is not enable (i.e.) there is no consumer
+ * of phy then just enable phy, clear the interrupt and disable
+ * again
+ */
+ tda8026_enable(tda8026);
+ tda8026_clear_interrupts(tda8026);
+ tda8026_disable(tda8026);
+ return IRQ_HANDLED;
+ }
+
+ /* Select the Interrupt register bank */
+ val = TDA8026_CSB_PV_INTSTAT_VAL;
+ tda8026_i2c_write(tda8026, TDA8026_CSB_ADDR, 1, &val);
+
+ /* Read the interrupt status which will tell us the slot */
+ ret = tda8026_i2c_read(tda8026, TDA8026_INTSTAT_ADDR, 1, &status);
+ if (ret < 0)
+ return IRQ_HANDLED;
+
+
+ /* find out for which slot interrupt has occur */
+ slot = 0;
+ while (val == 0 && slot < TDA8026_MAX_SLOTS) {
+ val = status & (1 << slot);
+ slot++;
+ }
+
+ if (slot > TDA8026_MAX_SLOTS) {
+ dev_err(tda8026->dev, "invalid slot interrput");
+ return IRQ_HANDLED;
+ }
+
+ /* Program the slot number to the CSB register */
+ ret = tda8026_i2c_write(tda8026, TDA8026_CSB_ADDR, 1, &slot);
+ if (ret < 0)
+ return IRQ_HANDLED;
+
+ /* Now read the slot reg0 to find out the cause of interrupt
+ * Note that IRQ is raised only when one of the SUPL, PROT,
+ * MUTE and EARLY bits are set to logic 1.
+ */
+ ret = tda8026_i2c_read(tda8026, TDA8026_REG0_ADDR, 1, &status);
+ if (ret < 0)
+ return IRQ_HANDLED;
+
+ if (slot < 3) {
+ /* slot 1 and slot 2 can be used for user card, it can raise
+ * interrupt for card insert and remove.Other slot are for SAM
+ * modules. They are either always present or alwyas absent
+ */
+ if (status & TDA8026_REG0_PREL_MASK) {
+ if (status & TDA8026_REG0_PRES_MASK) {
+ dev_dbg(tda8026->dev, "card is inserted");
+ action |= SC_PHY_CARD_INSERTED;
+ } else {
+ dev_dbg(tda8026->dev, "card is removed");
+ action |= SC_PHY_CARD_REMOVED;
+ }
+ }
+ }
+
+ if (status & (TDA8026_REG0_EARLY_MASK | TDA8026_REG0_MUTE_MASK)) {
+ dev_dbg(tda8026->dev, "CARD EARLY INTERRUPT\n");
+ action |= SC_PHY_CARD_ATR_TIMEOUT;
+ }
+
+ if (status & TDA8026_REG0_PROT_MASK) {
+ dev_dbg(tda8026->dev, "CARD OVERHEAT/OVERLOAD INTERRUPT\n");
+ action |= SC_PHY_CARD_OVERHEAT;
+ }
+
+ if (action != 0x0 && tda8026->notify) {
+ /* add slot information. Pass slot-1 as for controller slot
+ * starts from 0,1,2.. */
+ action |= ((slot-1) << SC_PHY_NOTIFICATION_SLOT_SHIFT);
+
+ /* notify action */
+ blocking_notifier_call_chain(&tda8026_notifier_list, action,
+ phy_tda8026->notify_data);
+ }
+ return IRQ_HANDLED;
+}
+
+/*
+ * PDWN bit is set/cleared to apply CLKPD[1:0] bit clock settings to
+ * the clock pin for the selected card slot.
+ */
+static int tda8026_pwdn(struct tda8026 *tda8026, u8 slot, int state)
+{
+ u8 reg0 = 0;
+ int ret = 0;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+
+ if (state)
+ reg0 |= TDA8026_REG0_PDWN_MASK;
+ else
+ reg0 &= ~(TDA8026_REG0_PDWN_MASK);
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ return 0;
+}
+
+/*
+ * Set the card supply voltage.
+ * TDA PHY supports supply voltage of 1.8V, 3V and 5V.
+ */
+static int tda8026_set_voltage(struct tda8026 *tda8026, u8 slot, int voltage)
+{
+ u8 reg0 = 0;
+ int ret = 0;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+
+ reg0 &= ~(TDA8026_REG0_VCC1V8_MASK | TDA8026_REG0_5V3VN_MASK);
+
+ switch (voltage) {
+ case SC_PHY_1_8V:
+ reg0 |= TDA8026_REG0_VCC1V8_MASK;
+ break;
+
+ case SC_PHY_5V:
+ reg0 |= TDA8026_REG0_5V3VN_MASK;
+ break;
+
+ case SC_PHY_3V:
+ default:
+ break;
+ }
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ return 0;
+}
+
+/*
+ * Enable the I/O line by setting I/OEN bit of slot's main address register.
+ * The I/O line should be enabled prior to card activation.
+ */
+static int tda8026_io_enable(struct tda8026 *tda8026, u8 slot)
+{
+ u8 reg0 = 0;
+ int ret = 0;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 |= TDA8026_REG0_IOEN_MASK;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ return 0;
+}
+
+/*
+ * Disable the I/O line by clearing I/OEN bit of slot's main address register.
+ * The I/O line can be disabled post card activation.
+ */
+static int tda8026_io_disable(struct tda8026 *tda8026, u8 slot)
+{
+ u8 reg0 = 0;
+ int ret = 0;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 &= ~(TDA8026_REG0_IOEN_MASK);
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ return 0;
+}
+
+/*
+ * Sets the mute counter in C[15:8] and C[7:0] register
+ * Write Reg[1:0] = 11 to select C[7:0] register
+ * Write Reg[1:0] = 10 to select C[15:8] register
+ */
+static int tda8026_set_atr_mute_time(struct tda8026 *tda8026, u8 slot,
+ int mute_counter)
+{
+ u8 reg0;
+ u8 mute_counter_high = (mute_counter & 0xFF00) >> 8;
+ u8 mute_counter_low = mute_counter & 0xFF;
+ int ret = 0;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 |= TDA8026_REG0_REG10_CLSB_VAL << TDA8026_REG0_REG10_SHIFT;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ /* Write the mute counter value in C[7:0] LSB register */
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG1_ADDR, 1,
+ &mute_counter_low);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 |= TDA8026_REG0_REG10_CMSB_VAL << TDA8026_REG0_REG10_SHIFT;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ /* Write the mute counter value in C[15:8] MSB register */
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG1_ADDR, 1,
+ &mute_counter_high);
+ if (ret < 0)
+ return ret;
+ else
+ return 0;
+}
+
+/*
+ * Sets the ATR early time counter.
+ * Write Reg[1:0] = 01 to select D register
+ */
+static int tda8026_set_atr_early_time(struct tda8026 *tda8026, u8 slot,
+ int early_counter)
+{
+ u8 reg0;
+ int ret = 0;
+ u8 counter = 0;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 |= TDA8026_REG0_REG10_D_VAL << TDA8026_REG0_REG10_SHIFT;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ /* Write the early atr counter value in D register */
+ counter = (early_counter - TDA8026_MIN_EARLY_CYCLE) & 0xFF;
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG1_ADDR, 1, &counter);
+ if (ret < 0)
+ return ret;
+ else
+ return 0;
+}
+
+static int tda8026_set_rstpin(struct tda8026 *tda8026, u8 slot, int state)
+{
+ u8 reg0 = 0;
+ u8 reg1 = 0;
+ int ret = 0;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ /* Write Reg[1:0] = 00 to select CONFIG register */
+ reg0 = tda8026->reg0[slot];
+ reg0 &= ~TDA8026_REG0_REG10_MASK;
+ reg0 |= (TDA8026_REG0_REG10_CFG_VAL << TDA8026_REG0_REG10_SHIFT) &
+ TDA8026_REG0_REG10_MASK;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ /* Read the Reg1 value */
+ ret = tda8026_i2c_read(tda8026, TDA8026_REG1_ADDR, 1,
+ ®1);
+ if (ret < 0)
+ return ret;
+
+ if (state)
+ reg1 |= TDA8026_REG1CFG_RSTIN_MASK;
+ else
+ reg1 &= ~TDA8026_REG1CFG_RSTIN_MASK;
+
+ /* Write the Reset value to the register */
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG1_ADDR, 1, ®1);
+ if (ret < 0)
+ return ret;
+ else
+ return 0;
+}
+
+/*
+ * Activate the card by setting START bit of slot's main register.
+ * Voltage selction and enabling of I/O lines should be done prior
+ * to activating the card.
+ */
+static int tda8026_activate_card(struct sc_phy *phy_tda8026, u8 slot)
+{
+ u8 reg0 = 0;
+ int ret = 0;
+ struct tda8026 *tda8026;
+
+ if (phy_tda8026 == NULL)
+ return -EINVAL;
+
+ tda8026 = (struct tda8026 *)phy_tda8026->pdata;
+
+ /* if PHY is used then RSTIN should be 1 for async cards,
+ * currently this is applicable only for TDA8026
+ */
+ tda8026_set_rstpin(tda8026, slot, 1);
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 |= TDA8026_REG0_START_MASK;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ return 0;
+}
+
+/*
+ * Deactivate the card by clearing the START bit of slot's main register
+ * We implement normal de-activation here.
+ * On clearing the START bit with normal deactivation, automatic
+ * deactivation is initiated and performaed by TDA8026.
+ */
+static int tda8026_deactivate_card(struct sc_phy *phy_tda8026, u8 slot)
+{
+ u8 reg0 = 0;
+ int ret = 0;
+
+ struct tda8026 *tda8026;
+
+ if (phy_tda8026 == NULL)
+ return -EINVAL;
+
+ tda8026 = (struct tda8026 *)phy_tda8026->pdata;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 &= ~(TDA8026_REG0_START_MASK);
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ return 0;
+}
+
+/*
+ * Warm reset is initiated by setting the WARM bit of slot's main register
+ */
+static int tda8026_warm_reset(struct sc_phy *phy_tda8026, u8 slot)
+{
+ u8 reg0 = 0;
+ int ret = 0;
+
+ struct tda8026 *tda8026;
+
+ if (phy_tda8026 == NULL)
+ return -EINVAL;
+
+ tda8026 = (struct tda8026 *)phy_tda8026->pdata;
+
+ /* See section 6.5 in TDA app note */
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 |= TDA8026_REG0_WARM_RESET_MASK;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ return 0;
+}
+
+/*
+ * Read and return the TDA8026 PHY product version
+ */
+static int tda8026_get_provider_version(struct tda8026 *tda8026)
+{
+ u8 val;
+ u8 version = 0;
+ int ret = 0;
+
+ /* Select Product version bank i.e Write CSB = 00 */
+ val = TDA8026_CSB_PV_INTSTAT_VAL;
+ ret = tda8026_i2c_write(tda8026, TDA8026_CSB_ADDR, 1, &val);
+ if (ret < 0)
+ return ret;
+
+ ret = tda8026_i2c_read(tda8026, TDA8026_PRODVER_ADDR, 1, &version);
+ if (ret < 0)
+ return ret;
+ else
+ dev_info(tda8026->dev, "Product Version = %x\n", version);
+
+ return version;
+}
+
+
+/*
+ * Set/reset the C4/C8 Pin
+ * Write Reg[1:0] = 00 to select CONFIG register
+ */
+static int tda8026_set_c4c8(struct tda8026 *tda8026, u8 slot, int state, int pin)
+{
+ u8 reg0 = 0;
+ u8 reg1 = 0;
+ int ret = 0;
+ int mask = 0;
+
+ if (slot != 0) {
+ /* C4/C8 pin value valid only for slot 1 */
+ return -EINVAL;
+ } else {
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 &= ~TDA8026_REG0_REG10_MASK;
+ reg0 |= (TDA8026_REG0_REG10_CFG_VAL <<
+ TDA8026_REG0_REG10_SHIFT) &
+ TDA8026_REG0_REG10_MASK;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ ret = tda8026_i2c_read(tda8026, TDA8026_REG1_ADDR, 1,
+ ®1);
+ if (ret < 0)
+ return ret;
+ if (pin == SC_PHY_PIN_C8)
+ mask = TDA8026_REG1CFG_C8_MASK;
+ else if (pin == SC_PHY_PIN_C4)
+ mask = TDA8026_REG1CFG_C4_MASK;
+ else
+ return -EINVAL;
+
+ if (state)
+ reg1 |= mask;
+ else
+ reg1 &= ~mask;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG1_ADDR, 1,
+ ®1);
+ if (ret < 0)
+ return ret;
+ }
+ return 0;
+}
+
+/*
+ * Get the state of C4/C8 pin (high/low)
+ * Write Reg[1:0] = 00 to select CONFIG register
+ */
+static int tda8026_get_c4c8(struct tda8026 *tda8026, u8 slot, int pin)
+{
+ u8 reg0 = 0;
+ u8 reg1 = 0;
+ int ret = 0;
+ int mask = 0;
+
+ if (slot != 0) {
+ /* C4/C8 pin value valid only for slot 1 */
+ return -EINVAL;
+ } else {
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 &= ~TDA8026_REG0_REG10_MASK;
+ reg0 |= (TDA8026_REG0_REG10_CFG_VAL <<
+ TDA8026_REG0_REG10_SHIFT) &
+ TDA8026_REG0_REG10_MASK;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ ret = tda8026_i2c_read(tda8026, TDA8026_REG1_ADDR, 1,
+ ®1);
+ if (ret < 0)
+ return ret;
+
+ if (pin == SC_PHY_PIN_C8)
+ mask = TDA8026_REG1CFG_C8_MASK;
+ else if (pin == SC_PHY_PIN_C4)
+ mask = TDA8026_REG1CFG_C4_MASK;
+ else
+ return -EINVAL;
+
+ return (reg1 &= mask) ? 1 : 0;
+ }
+ return 0;
+}
+
+/*
+ * Set card clock
+ * Applicable only for synchronous mode
+ */
+static int tda8026_set_cardclk(struct tda8026 *tda8026, u8 slot,
+ int config)
+{
+ u8 reg0 = 0;
+ u8 reg1 = 0;
+ int ret = 0;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 &= ~TDA8026_REG0_REG10_MASK;
+ reg0 |= (TDA8026_REG0_REG10_CFG_VAL << TDA8026_REG0_REG10_SHIFT) &
+ TDA8026_REG0_REG10_MASK;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ ret = tda8026_i2c_read(tda8026, TDA8026_REG1_ADDR, 1, ®1);
+ if (ret < 0)
+ return ret;
+
+ reg1 &= ~(TDA8026_REG1CFG_CLKPD_MASK);
+ reg1 |= (config << TDA8026_REG1CFG_CLKPD_SHIFT) &
+ TDA8026_REG1CFG_CLKPD_MASK;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG1_ADDR, 1, ®1);
+ if (ret < 0)
+ return ret;
+ else
+ return 0;
+}
+
+/*
+ * Set the CLKDIV[1:0] bits.
+ * CLKDIV[1:0] bits define the card clock frequency
+ * Write Reg[1:0] = 00 to select CONFIG register
+ */
+static int tda8026_set_clkdiv(struct tda8026 *tda8026, u8 slot, int div)
+{
+ u8 reg0 = 0;
+ u8 reg1 = 0;
+ int ret = 0;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 &= ~TDA8026_REG0_REG10_MASK;
+ reg0 |= (TDA8026_REG0_REG10_CFG_VAL << TDA8026_REG0_REG10_SHIFT) &
+ TDA8026_REG0_REG10_MASK;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ ret = tda8026_i2c_read(tda8026, TDA8026_REG1_ADDR, 1, ®1);
+ if (ret < 0)
+ return ret;
+
+ reg1 &= ~(TDA8026_REG1CFG_CLKDIV_MASK);
+ reg1 |= (div << TDA8026_REG1CFG_CLKDIV_SHIFT) &
+ TDA8026_REG1CFG_CLKDIV_MASK;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG1_ADDR, 1, ®1);
+ if (ret < 0)
+ return ret;
+ else
+ return 0;
+}
+
+/*
+ * Get the CLKDIV[1:0] bits.
+ * CLKDIV[1:0] bits define the card clock frequency
+ * Write Reg[1:0] = 00 to select CONFIG register
+ */
+static int tda8026_get_clkdiv(struct tda8026 *tda8026, u8 slot)
+{
+ u8 reg0 = 0;
+ u8 reg1 = 0;
+ int ret = 0;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ reg0 = tda8026->reg0[slot];
+ reg0 &= ~TDA8026_REG0_REG10_MASK;
+ reg0 |= (TDA8026_REG0_REG10_CFG_VAL << TDA8026_REG0_REG10_SHIFT) &
+ TDA8026_REG0_REG10_MASK;
+
+ ret = tda8026_i2c_write(tda8026, TDA8026_REG0_ADDR, 1, ®0);
+ if (ret < 0)
+ return ret;
+ else if (ret == 1)
+ tda8026->reg0[slot] = reg0;
+
+ ret = tda8026_i2c_read(tda8026, TDA8026_REG1_ADDR, 1, ®1);
+ if (ret < 0)
+ return ret;
+
+ ret = reg1 & TDA8026_REG1CFG_CLKDIV_MASK;
+
+ return ret;
+}
+
+/*
+ * Check if card is present in the slot.
+ */
+static int tda8026_card_present(struct tda8026 *tda8026, u8 slot)
+{
+ int present = 0;
+ int ret = 0;
+ u8 status = 0;
+
+ if (tda8026->enable == 0)
+ return 0;
+
+ ret = tda8026_select_slot(tda8026, slot);
+ if (ret < 0)
+ return ret;
+
+ ret = tda8026_i2c_read(tda8026, TDA8026_REG0_ADDR, 1, &status);
+ if (ret < 0)
+ return ret;
+
+ if (status & TDA8026_REG0_PRES_MASK)
+ present = 1;
+
+ return present;
+}
+
+/**
+ * tda8026_register_notify - register a notifier callback whenever a card
+ * event happens
+ * @nb: pointer to the notifier block for the callback events.
+ */
+static int tda8026_register_notify(struct sc_phy *phy_tda8026,
+ struct notifier_block *nb, void *data)
+{
+ struct tda8026 *tda8026;
+
+ if (phy_tda8026 == NULL)
+ return -EINVAL;
+
+ phy_tda8026->notify_data = data;
+ tda8026 = (struct tda8026 *)phy_tda8026->pdata;
+ blocking_notifier_chain_register(&tda8026_notifier_list, nb);
+ tda8026->notify = 1;
+ return 0;
+}
+
+/**
+ * tda8026_unregister_notify - unregister a notifier callback
+ * event happens
+ * @nb: pointer to the notifier block for the callback events.
+ */
+static int tda8026_unregister_notify(struct sc_phy *phy_tda8026,
+ struct notifier_block *nb)
+{
+ struct tda8026 *tda8026;
+
+ if (phy_tda8026 == NULL)
+ return -EINVAL;
+
+ tda8026 = (struct tda8026 *)phy_tda8026->pdata;
+ blocking_notifier_chain_unregister(&tda8026_notifier_list, nb);
+ tda8026->notify = 0;
+ return 0;
+}
+
+static int tda8026_set_config(struct sc_phy *phy_tda8026, u8 slot, enum
+ sc_phy_config attr, int value)
+{
+ int ret = 0;
+ struct tda8026 *tda8026;
+
+ if (phy_tda8026 == NULL)
+ return -EINVAL;
+
+ tda8026 = (struct tda8026 *)phy_tda8026->pdata;
+ switch (attr) {
+ case SC_PHY_CARD_SUPPLY_VOLTAGE:
+ ret = tda8026_set_voltage(tda8026, slot, value);
+ break;
+
+ case SC_PHY_ATR_MUTE_TIME:
+ ret = tda8026_set_atr_mute_time(tda8026, slot, value);
+ break;
+
+ case SC_PHY_ATR_EARLY_TIME:
+ ret = tda8026_set_atr_early_time(tda8026, slot, value);
+ break;
+
+ case SC_PHY_CARD_MODE:
+ if (value == SC_PHY_SYNC) {
+ /* set clkdiv to zero, rst pin to low and pwdn bit to
+ * logic 0
+ */
+ tda8026_set_clkdiv(tda8026, slot, 0);
+ tda8026_set_rstpin(tda8026, slot, 0);
+ tda8026_pwdn(tda8026, slot, 0);
+ } else {
+ /* Nothing to do, default mode is async */
+ }
+ break;
+
+ case SC_PHY_IO:
+ if (value)
+ ret = tda8026_io_enable(tda8026, slot);
+ else
+ ret = tda8026_io_disable(tda8026, slot);
+ break;
+
+ case SC_PHY_PIN_RST:
+ ret = tda8026_set_rstpin(tda8026, slot, value);
+ break;
+
+ case SC_PHY_CLKDIV:
+ ret = tda8026_set_clkdiv(tda8026, slot, value);
+ break;
+
+ case SC_PHY_MODE:
+ if (value == SC_PHY_ACTIVE)
+ tda8026_enable(tda8026);
+ else if (value == SC_PHY_SHUTDOWN)
+ tda8026_disable(tda8026);
+ else
+ ret = -EINVAL;
+ break;
+
+ case SC_PHY_PIN_C4:
+ ret = tda8026_set_c4c8(tda8026, slot, value, SC_PHY_PIN_C4);
+ break;
+
+ case SC_PHY_PIN_C8:
+ ret = tda8026_set_c4c8(tda8026, slot, value, SC_PHY_PIN_C8);
+ break;
+
+ case SC_PHY_PIN_CLK:
+ ret = tda8026_set_cardclk(tda8026, slot, value);
+ break;
+
+ default:
+ ret = -EINVAL;
+ dev_err(phy_tda8026->dev, "operation not supported:%d", attr);
+ break;
+ }
+ return ret;
+}
+
+static int tda8026_get_config(struct sc_phy *phy_tda8026, u8 slot, enum
+ sc_phy_config attr)
+{
+ int ret = -1;
+ struct tda8026 *tda8026;
+
+ if (phy_tda8026 == NULL)
+ return -EINVAL;
+
+ tda8026 = (struct tda8026 *)phy_tda8026->pdata;
+ switch (attr) {
+ case SC_PHY_CARD_PRESENCE:
+ ret = tda8026_card_present(tda8026, slot);
+ break;
+
+ case SC_PHY_VERSION:
+ ret = tda8026_get_provider_version(tda8026);
+ break;
+
+ case SC_PHY_CLKDIV:
+ ret = tda8026_get_clkdiv(tda8026, slot);
+ break;
+
+ case SC_PHY_PIN_C4:
+ ret = tda8026_get_c4c8(tda8026, slot, SC_PHY_PIN_C4);
+ break;
+
+ case SC_PHY_PIN_C8:
+ ret = tda8026_get_c4c8(tda8026, slot, SC_PHY_PIN_C8);
+ break;
+
+ default:
+ ret = -EINVAL;
+ dev_err(phy_tda8026->dev, "operation not supported:%d", attr);
+ break;
+ }
+ return ret;
+}
+
+#if defined(CONFIG_OF)
+static const struct of_device_id tda8026_id_table[];
+#endif
+
+static int tda8026_parse_dt(struct device *dev, struct tda8026 *pdata)
+{
+ struct device_node *np = dev->of_node;
+ int ret = 0;
+
+ pdata->shutdown_gpio = of_get_named_gpio(np, "shutdown-gpio", 0);
+ if (!gpio_is_valid(pdata->shutdown_gpio)) {
+ dev_err(dev, "Failed to get shutdown gpio\n");
+ return -EINVAL;
+ }
+
+ ret = devm_gpio_request_one(dev, pdata->shutdown_gpio,
+ GPIOF_DIR_OUT, "shutdown_gpio");
+ if (ret) {
+ dev_err(dev, "Failed to request shutdown_gpio\n");
+ return ret;
+ }
+ return 0;
+}
+
+static int tda8026_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ int ret = 0;
+ struct sc_phy *phy_tda8026;
+ struct tda8026 *pdata;
+
+ struct device *dev = &i2c->dev;
+ struct device_node *np = dev->of_node;
+
+ if (np == NULL)
+ return -EINVAL;
+
+ pdata = devm_kzalloc(dev, sizeof(struct tda8026), GFP_KERNEL);
+ if (pdata == NULL)
+ return -ENOMEM;
+
+ phy_tda8026 = devm_kzalloc(dev, sizeof(struct sc_phy), GFP_KERNEL);
+ if (phy_tda8026 == NULL)
+ return -ENOMEM;
+
+ ret = tda8026_parse_dt(dev, pdata);
+ if (ret != 0)
+ return ret;
+
+ i2c_set_clientdata(i2c, phy_tda8026);
+ phy_tda8026->dev = &i2c->dev;
+
+ phy_tda8026->pdata = (void *)pdata;
+ pdata->control_data = i2c;
+ pdata->irq = i2c->irq;
+ pdata->dev = phy_tda8026->dev;
+ pdata->notify = 0;
+
+ if (pdata->irq == 0) {
+ return -EINVAL;
+ }
+ ret = devm_request_threaded_irq(dev, pdata->irq, NULL, tda8026_irq,
+ IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+ "tda8026", phy_tda8026);
+ if (ret < 0) {
+ dev_err(phy_tda8026->dev, "can't get irq %d err %d\n",
+ pdata->irq, ret);
+ return ret;
+ }
+
+ /* enable phy */
+ tda8026_enable(pdata);
+
+ tda8026_clear_interrupts(pdata);
+ phy_tda8026->set_config = tda8026_set_config;
+ phy_tda8026->get_config = tda8026_get_config;
+ phy_tda8026->activate_card = tda8026_activate_card;
+ phy_tda8026->deactivate_card = tda8026_deactivate_card;
+ phy_tda8026->warm_reset = tda8026_warm_reset;
+ phy_tda8026->register_notify = tda8026_register_notify;
+ phy_tda8026->unregister_notify = tda8026_unregister_notify;
+
+ /* disable phy */
+ tda8026_disable(pdata);
+
+ return 0;
+}
+
+static int tda8026_i2c_remove(struct i2c_client *i2c)
+{
+ struct sc_phy *phy_tda8026;
+ struct tda8026 *tda8026;
+ int action = 0;
+
+ phy_tda8026 = i2c_get_clientdata(i2c);
+ if (phy_tda8026 == NULL)
+ return -EINVAL;
+
+ tda8026 = (struct tda8026 *)phy_tda8026->pdata;
+
+ /* notify action */
+ action = SC_PHY_REMOVED;
+ blocking_notifier_call_chain(&tda8026_notifier_list, action,
+ phy_tda8026->notify_data);
+ tda8026->notify = 0;
+
+ /* enable shutdown mode */
+ tda8026_disable(tda8026);
+
+ return 0;
+}
+
+#if defined(CONFIG_OF)
+static const struct of_device_id tda8026_id_table[] = {
+ { .compatible = "nxp,tda8026" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tda8026_id_table);
+#endif
+
+static const struct i2c_device_id tda8026_i2c_id[] = {
+ {"tda8026", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tda8026_i2c_id);
+
+static struct i2c_driver tda8026_i2c_driver = {
+ .driver = {
+ .name = "tda8026",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(tda8026_id_table),
+ },
+ .probe = tda8026_i2c_probe,
+ .remove = tda8026_i2c_remove,
+ .id_table = tda8026_i2c_id,
+};
+static int __init tda8026_i2c_init(void)
+{
+ int ret;
+ ret = i2c_add_driver(&tda8026_i2c_driver);
+ if (ret != 0)
+ pr_err("Failed to register TDA8026 I2C driver: %d\n", ret);
+ return ret;
+}
+/* init early so consumer devices can complete system boot */
+subsys_initcall(tda8026_i2c_init);
+
+static void __exit tda8026_i2c_exit(void)
+{
+ i2c_del_driver(&tda8026_i2c_driver);
+}
+module_exit(tda8026_i2c_exit);
+
+MODULE_AUTHOR("Maulik Mankad <maulik@ti.com>");
+MODULE_DESCRIPTION("TDA8026 Smart Card NXP PHY driver");
+MODULE_LICENSE("GPL");
--
1.7.1
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH v2 3/5] char: ti-usim: Add driver for USIM module on AM43xx
2014-01-20 4:33 [PATCH v2 0/5] Smart Card(SC) interface, TI USIM & NxP SC phy driver Satish Patel
2014-01-20 4:33 ` [PATCH v2 1/5] sc_phy:SmartCard(SC) PHY interface to SC controller Satish Patel
2014-01-20 4:33 ` [PATCH v2 2/5] misc: tda8026: Add NXP TDA8026 PHY driver Satish Patel
@ 2014-01-20 4:33 ` Satish Patel
[not found] ` <1390192434-19386-4-git-send-email-satish.patel-l0cyMroinI0@public.gmane.org>
2014-01-20 4:33 ` [PATCH v2 4/5] ARM: dts: AM43xx: DT entries added for ti-usim Satish Patel
` (2 subsequent siblings)
5 siblings, 1 reply; 13+ messages in thread
From: Satish Patel @ 2014-01-20 4:33 UTC (permalink / raw)
To: linux-kernel, linux-arm-kernel, linux-omap, devicetree, gregkh,
rob
Cc: Satish Patel
TI-USIM driver is a platform driver that provides a character
driver interface to user applications.
It allows user applications to call IOCTL's to
perform smart card operations.
Driver currently supports
- ATR
- T=0 & T=1 protocol
- clock stop mode
- smart card clock configuration
- Tx/Rx application data units (APDU) to smart card
- Interface to PHY using DT & phy interface
Validation is done with ACOS3 smart cards
Signed-off-by: Satish Patel <satish.patel@ti.com>
---
.../devicetree/bindings/ti-usim/ti-usim.txt | 31 +
drivers/char/Kconfig | 7 +
drivers/char/Makefile | 1 +
drivers/char/ti-usim-hw.h | 863 +++++++++
drivers/char/ti-usim.c | 1859 ++++++++++++++++++++
include/linux/ti-usim.h | 98 +
6 files changed, 2859 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/ti-usim/ti-usim.txt
create mode 100644 drivers/char/ti-usim-hw.h
create mode 100644 drivers/char/ti-usim.c
create mode 100644 include/linux/ti-usim.h
diff --git a/Documentation/devicetree/bindings/ti-usim/ti-usim.txt b/Documentation/devicetree/bindings/ti-usim/ti-usim.txt
new file mode 100644
index 0000000..6dc5d9c
--- /dev/null
+++ b/Documentation/devicetree/bindings/ti-usim/ti-usim.txt
@@ -0,0 +1,31 @@
+ti-usim: USIM - Smart Card Controller
+
+Required Properties:
+- compatible: Should be "ti,usim"
+- reg: Specifies base physical address and size of the USIM registers
+- interrupts: Interrupt number for the USIM controller
+- ti,hwmods: Name of the hwmod associated to the USIM controller
+
+- clocks : list of clock specifiers, corresponding to entries in the
+ clock-names property
+- clock-names : should contain "opt_fck" and "opt_fck32" entries, matching
+ entries in the clocks property.
+
+Optional properties:
+- pinctrl-0: Should specify pin control group used for this controller.
+- pinctrl-names: Should contain only one value - "default", for more details
+ please refer to pinctrl-bindings.txt
+
+- phy : Should specify <smart card phy> reference connected to controller
+- phy-slots : No of slots to which controller will communicate
+
+Example:
+
+usim0: usim@48034000 {
+ compatible = "ti,usim";
+ reg = <0x48034000 0x1000>;
+ interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
+ ti,hwmods = "usim0";
+ clocks = <&usim0_opt_fck>, <&usim0_opt_fck32>;
+ clock-names = "opt_fck", "opt_fck32";
+ };
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index fa3243d..dee0209 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -599,5 +599,12 @@ config TILE_SROM
device appear much like a simple EEPROM, and knows
how to partition a single ROM for multiple purposes.
+config TI_USIM
+ tristate "Character device access to TI's USIM module on AM43X"
+ depends on SOC_AM43XX
+ help
+ This device creates a character device interface that enables
+ user applications to exchange data with TI's USIM module.
+
endmenu
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 7ff1d0d..763fd3d 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -62,3 +62,4 @@ obj-$(CONFIG_JS_RTC) += js-rtc.o
js-rtc-y = rtc.o
obj-$(CONFIG_TILE_SROM) += tile-srom.o
+obj-$(CONFIG_TI_USIM) += ti-usim.o
diff --git a/drivers/char/ti-usim-hw.h b/drivers/char/ti-usim-hw.h
new file mode 100644
index 0000000..b6d69ff
--- /dev/null
+++ b/drivers/char/ti-usim-hw.h
@@ -0,0 +1,863 @@
+/*
+ * ti-usim-hw.h - Header file for USIM smart card interface
+ *
+ * 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.
+ */
+
+#ifndef __TI_USIM_HW_H__
+#define __TI_USIM_HW_H__
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+#include <linux/sc_phy.h>
+#include <linux/ti-usim.h>
+
+
+#define USIM_MAX_SLOTS 0x2
+
+/* WWT Work Wait Time */
+#define USIM_EMV_WI (10)
+#define USIM_EMV_WWT ((960 * USIM_EMV_WI) + (480))
+/* CGT Character Guard Time */
+#define USIM_EMV_CGT (12)
+
+#define USIM_ATR_TIMEOUT_EMV (20160)
+#define USIM_EMV_ATR_EARLY_TO (370)
+#define USIM_EMV_ATR_MUTE_TO (42000)
+
+#define USIM_MAX_RX_FIFO_SIZE (260)
+#define USIM_MAX_TX_FIFO_SIZE (260)
+#define USIM_MAX_PARITY_RETRIES (7)
+
+#define USIM_IRQ_NATR (0x00000001)
+#define USIM_IRQ_WT (0x00000002)
+#define USIM_IRQ_RXFULL (0x00000004)
+#define USIM_IRQ_TX (0x00000008)
+#define USIM_IRQ_RX (0x00000010)
+#define USIM_IRQ_CD (0x00000020)
+#define USIM_IRQ_EOB (0x00000040)
+#define USIM_IRQ_TOC (0x00000080)
+#define USIM_IRQ_TOB (0x00000100)
+#define USIM_IRQ_RESENT (0x00000200)
+#define USIM_IRQ_TS_ERR (0x00000400)
+#define USIM_IRQ_EMV_ATR_LENGTH_TIME_OUT (0x00000800)
+#define USIM_IRQ_STOP (0x00001000)
+#define USIM_IRQ_PAR_ERR_LEVEL_REACHED (0x00002000)
+#define USIM_IRQ_FRAME_ERR (0x00004000)
+#define USIM_IRQ_RXDMA_RDY (0x00008000)
+#define USIM_IRQ_ATR_START (0x00010000)
+#define USIM_IRQ_ACT_DONE (0x00020000)
+#define USIM_IRQ_DEACT_DONE (0x00040000)
+#define USIM_IRQ_TX_BLOCK_DONE (0x00080000)
+#define USIM_IRQ_TX_BLOCK_REQ (0x00100000)
+
+#define USIM_CONFSCLKMODE_LEGACY 0x0
+#define USIM_CONFSCLKMODE_HF 0x1
+
+/*
+ * Different operating modes supported in USIM.
+ * Programming USIM to a different mode from current mode would
+ * endup in state machine state change within the IPs FSM
+ */
+enum usim_mode {
+ USIM_MODE_LEGACY = 0x0,
+ USIM_MODE_FREEZE = 0x1,
+ USIM_MODE_TXRX = 0x2,
+ USIM_MODE_ATR = 0x3,
+ USIM_MODE_ACT = 0x4,
+ USIM_MODE_DEACT = 0x5,
+ USIM_MODE_IDLE = 0x6,
+};
+
+/*
+ * structure to store slot specific information
+ */
+struct usim_slotcontext {
+ char atr[USIM_MAX_ATRLENGTH];
+ char rxbuf[USIM_MAX_APDU_LENGTH];
+ bool emv;
+ enum usim_mode state;
+ int event;
+ int protocol;
+ enum usim_card_voltage supply;
+ int rx_explen;
+ int rx_counter;
+ int atr_length;
+ enum usim_smartcard_clock clock;
+};
+
+struct usim {
+ struct device *dev;
+
+ /* to protect interrput handling */
+ spinlock_t lock;
+ int irq;
+ void __iomem *base;
+ int slot;
+ int max_slots;
+ int phy_present;
+ int txdone;
+ int rxdone;
+ int atrdone;
+ int user_pid;
+ int enable;
+ struct sc_phy *phy;
+ struct usim_slotcontext *slot_ctx;
+
+ struct clk *opt_fclk;
+ struct clk *opt_fclk32;
+ struct clk *usim_dbclk;
+ struct clk *clkdiv32k_ick;
+ struct clk *usim0_fck;
+ struct clk *dpll_core_m4_ck;
+
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *debugfs_root;
+#endif
+};
+
+/*
+ * Register Definitions: Taken from auto generated file
+ */
+#define USIM_REVISION (0x0U)
+#define USIM_IDENT (0x4U)
+#define USIM_SYSCONFIG (0x10U)
+#define USIM_SYSSTATUS (0x14U)
+#define USIM_IRQSTATUS (0x18U)
+#define USIM_IRQENABLE (0x1cU)
+#define USIM_WAKEUPEN (0x20U)
+#define USIM_CMD (0x24U)
+#define USIM_STAT (0x28U)
+#define USIM_CONF1 (0x2cU)
+#define USIM_CONF2 (0x30U)
+#define USIM_CONF3 (0x34U)
+#define USIM_DRX (0x38U)
+#define USIM_DTX (0x3cU)
+#define USIM_FIFOS (0x40U)
+#define USIM_CGT (0x44U)
+#define USIM_CWT (0x48U)
+#define USIM_BWT (0x4cU)
+#define USIM_DEBUG (0x50U)
+#define USIM_CONF_SAM1_DIV (0x54U)
+#define USIM_CONF4 (0x58U)
+#define USIM_ATR_CLK_PRD_NBS (0x5cU)
+#define USIM_CONF_ETU_DIV (0x60U)
+#define USIM_CONF5 (0x64U)
+#define USIM_TC_GUARD_TIME_ADD (0x68U)
+#define USIM_RXFIFO_LEVEL (0x6cU)
+#define USIM_RXFIFO_BYTECNT (0x70U)
+#define USIM_WWT (0x74U)
+#define USIM_CONF6 (0x78U)
+#define USIM_IO_DIRECT (0x7cU)
+#define USIM_TX_BLOCK (0x84U)
+
+/*
+ * Field Definition Macros
+ */
+#define USIM_REVISION_REV_SHIFT (0U)
+#define USIM_REVISION_REV_MASK (0x000000ffU)
+
+#define USIM_REVISION_RESERVED_24_SHIFT (8U)
+#define USIM_REVISION_RESERVED_24_MASK (0xffffff00U)
+
+#define USIM_IDENT_VC_SHIFT (0U)
+#define USIM_IDENT_VC_MASK (0x0000ffffU)
+
+#define USIM_IDENT_RESERVED_16_31_SHIFT (16U)
+#define USIM_IDENT_RESERVED_16_31_MASK (0xffff0000U)
+
+#define USIM_SYSCONFIG_AUTOIDLE_SHIFT (0U)
+#define USIM_SYSCONFIG_AUTOIDLE_MASK (0x00000001U)
+#define USIM_SYSCONFIG_AUTOIDLE_AUTOIDLE_VALUE_1 (1U)
+#define USIM_SYSCONFIG_AUTOIDLE_AUTOIDLE_VALUE_0 (0U)
+
+#define USIM_SYSCONFIG_SOFTRESET_SHIFT (1U)
+#define USIM_SYSCONFIG_SOFTRESET_MASK (0x00000002U)
+#define USIM_SYSCONFIG_SOFTRESET_SOFTRESET_VALUE_1 (1U)
+#define USIM_SYSCONFIG_SOFTRESET_SOFTRESET_VALUE_0 (0U)
+
+#define USIM_SYSCONFIG_ENAWAKEUP_SHIFT (2U)
+#define USIM_SYSCONFIG_ENAWAKEUP_MASK (0x00000004U)
+#define USIM_SYSCONFIG_ENAWAKEUP_ENAWAKEUP_VALUE_1 (1U)
+#define USIM_SYSCONFIG_ENAWAKEUP_ENAWAKEUP_VALUE_0 (0U)
+
+#define USIM_SYSCONFIG_IDLEMODE_SHIFT (3U)
+#define USIM_SYSCONFIG_IDLEMODE_MASK (0x00000018U)
+#define USIM_SYSCONFIG_IDLEMODE_IDLEMODE_VALUE_3 (3U)
+#define USIM_SYSCONFIG_IDLEMODE_IDLEMODE_VALUE_2 (2U)
+#define USIM_SYSCONFIG_IDLEMODE_IDLEMODE_VALUE_1 (1U)
+#define USIM_SYSCONFIG_IDLEMODE_IDLEMODE_VALUE_0 (0U)
+
+#define USIM_SYSCONFIG_EMUFREE_SHIFT (5U)
+#define USIM_SYSCONFIG_EMUFREE_MASK (0x00000020U)
+#define USIM_SYSCONFIG_EMUFREE_EMUFREE_VALUE_0 (0U)
+#define USIM_SYSCONFIG_EMUFREE_EMUFREE_VALUE_1 (1U)
+
+#define USIM_SYSCONFIG_RESERVED_6_7_SHIFT (6U)
+#define USIM_SYSCONFIG_RESERVED_6_7_MASK (0x000000c0U)
+
+#define USIM_SYSCONFIG_CLOCKACTIVITY_SHIFT (8U)
+#define USIM_SYSCONFIG_CLOCKACTIVITY_MASK (0x00000300U)
+
+#define USIM_SYSCONFIG_RESERVED_22_SHIFT (10U)
+#define USIM_SYSCONFIG_RESERVED_22_MASK (0xfffffc00U)
+
+#define USIM_SYSSTATUS_RESETDONE_SHIFT (0U)
+#define USIM_SYSSTATUS_RESETDONE_MASK (0x00000001U)
+#define USIM_SYSSTATUS_RESETDONE_RESETDONE_VALUE_1 (1U)
+#define USIM_SYSSTATUS_RESETDONE_RESETDONE_VALUE_0 (0U)
+
+#define USIM_SYSSTATUS_RESERVED_31_SHIFT (1U)
+#define USIM_SYSSTATUS_RESERVED_31_MASK (0xfffffffeU)
+
+#define USIM_IRQSTATUS_USIM_NATR_SHIFT (0U)
+#define USIM_IRQSTATUS_USIM_NATR_MASK (0x00000001U)
+
+#define USIM_IRQSTATUS_USIM_WT_SHIFT (1U)
+#define USIM_IRQSTATUS_USIM_WT_MASK (0x00000002U)
+
+#define USIM_IRQSTATUS_USIM_RXFULL_SHIFT (2U)
+#define USIM_IRQSTATUS_USIM_RXFULL_MASK (0x00000004U)
+
+#define USIM_IRQSTATUS_USIM_TX_SHIFT (3U)
+#define USIM_IRQSTATUS_USIM_TX_MASK (0x00000008U)
+
+#define USIM_IRQSTATUS_USIM_RX_SHIFT (4U)
+#define USIM_IRQSTATUS_USIM_RX_MASK (0x00000010U)
+
+#define USIM_IRQSTATUS_USIM_CD_SHIFT (5U)
+#define USIM_IRQSTATUS_USIM_CD_MASK (0x00000020U)
+
+#define USIM_IRQSTATUS_USIM_EOB_SHIFT (6U)
+#define USIM_IRQSTATUS_USIM_EOB_MASK (0x00000040U)
+
+#define USIM_IRQSTATUS_USIM_TOC_SHIFT (7U)
+#define USIM_IRQSTATUS_USIM_TOC_MASK (0x00000080U)
+
+#define USIM_IRQSTATUS_USIM_TOB_SHIFT (8U)
+#define USIM_IRQSTATUS_USIM_TOB_MASK (0x00000100U)
+
+#define USIM_IRQSTATUS_USIM_RESENT_SHIFT (9U)
+#define USIM_IRQSTATUS_USIM_RESENT_MASK (0x00000200U)
+
+#define USIM_IRQSTATUS_TS_ERROR_SHIFT (10U)
+#define USIM_IRQSTATUS_TS_ERROR_MASK (0x00000400U)
+
+#define USIM_IRQSTATUS_IT_EMV_ATR_LENGTH_TIME_OUT_SHIFT (11U)
+#define USIM_IRQSTATUS_IT_EMV_ATR_LENGTH_TIME_OUT_MASK (0x00000800U)
+
+#define USIM_IRQSTATUS_RESERVED_SHIFT (21U)
+#define USIM_IRQSTATUS_RESERVED_MASK (0xffe00000U)
+
+#define USIM_IRQSTATUS_USIM_STOP_CLK_SHIFT (12U)
+#define USIM_IRQSTATUS_USIM_STOP_CLK_MASK (0x00001000U)
+
+#define USIM_IRQSTATUS_PAR_ERR_LEVEL_REACHED_SHIFT (13U)
+#define USIM_IRQSTATUS_PAR_ERR_LEVEL_REACHED_MASK (0x00002000U)
+
+#define USIM_IRQSTATUS_FRAME_ERR_SHIFT (14U)
+#define USIM_IRQSTATUS_FRAME_ERR_MASK (0x00004000U)
+
+#define USIM_IRQSTATUS_RXDMA_RDY_SHIFT (15U)
+#define USIM_IRQSTATUS_RXDMA_RDY_MASK (0x00008000U)
+
+#define USIM_IRQSTATUS_ATR_START_SHIFT (16U)
+#define USIM_IRQSTATUS_ATR_START_MASK (0x00010000U)
+
+#define USIM_IRQSTATUS_ACT_DONE_SHIFT (17U)
+#define USIM_IRQSTATUS_ACT_DONE_MASK (0x00020000U)
+
+#define USIM_IRQSTATUS_DEACT_DONE_SHIFT (18U)
+#define USIM_IRQSTATUS_DEACT_DONE_MASK (0x00040000U)
+
+#define USIM_IRQSTATUS_TX_BLOCK_DONE_SHIFT (19U)
+#define USIM_IRQSTATUS_TX_BLOCK_DONE_MASK (0x00080000U)
+
+#define USIM_IRQSTATUS_TX_BLOCK_REQ_SHIFT (20U)
+#define USIM_IRQSTATUS_TX_BLOCK_REQ_MASK (0x00100000U)
+
+#define USIM_IRQENABLE_RESERVED_SHIFT (21U)
+#define USIM_IRQENABLE_RESERVED_MASK (0xffe00000U)
+
+#define USIM_IRQENABLE_EMV_ATR_LENGTH_TIME_OUT_EN_SHIFT (11U)
+#define USIM_IRQENABLE_EMV_ATR_LENGTH_TIME_OUT_EN_MASK (0x00000800U)
+
+#define USIM_IRQENABLE_TS_ERR_EN_SHIFT (10U)
+#define USIM_IRQENABLE_TS_ERR_EN_MASK (0x00000400U)
+
+#define USIM_IRQENABLE_RESENT_EN_SHIFT (9U)
+#define USIM_IRQENABLE_RESENT_EN_MASK (0x00000200U)
+
+#define USIM_IRQENABLE_TOB_EN_SHIFT (8U)
+#define USIM_IRQENABLE_TOB_EN_MASK (0x00000100U)
+
+#define USIM_IRQENABLE_TOC_EN_SHIFT (7U)
+#define USIM_IRQENABLE_TOC_EN_MASK (0x00000080U)
+
+#define USIM_IRQENABLE_EOB_EN_SHIFT (6U)
+#define USIM_IRQENABLE_EOB_EN_MASK (0x00000040U)
+
+#define USIM_IRQENABLE_CD_EN_SHIFT (5U)
+#define USIM_IRQENABLE_CD_EN_MASK (0x00000020U)
+
+#define USIM_IRQENABLE_RX_EN_SHIFT (4U)
+#define USIM_IRQENABLE_RX_EN_MASK (0x00000010U)
+
+#define USIM_IRQENABLE_TX_EN_SHIFT (3U)
+#define USIM_IRQENABLE_TX_EN_MASK (0x00000008U)
+
+#define USIM_IRQENABLE_RXFULL_EN_SHIFT (2U)
+#define USIM_IRQENABLE_RXFULL_EN_MASK (0x00000004U)
+
+#define USIM_IRQENABLE_WT_EN_SHIFT (1U)
+#define USIM_IRQENABLE_WT_EN_MASK (0x00000002U)
+
+#define USIM_IRQENABLE_NATR_EN_SHIFT (0U)
+#define USIM_IRQENABLE_NATR_EN_MASK (0x00000001U)
+
+#define USIM_IRQENABLE_STOP_CLK_SHIFT (12U)
+#define USIM_IRQENABLE_STOP_CLK_MASK (0x00001000U)
+
+#define USIM_IRQENABLE_PAR_ERR_LEVEL_REACHED_EN_SHIFT (13U)
+#define USIM_IRQENABLE_PAR_ERR_LEVEL_REACHED_EN_MASK (0x00002000U)
+
+#define USIM_IRQENABLE_FRAME_ERR_EN_SHIFT (14U)
+#define USIM_IRQENABLE_FRAME_ERR_EN_MASK (0x00004000U)
+
+#define USIM_IRQENABLE_RXDMA_RDY_EN_SHIFT (15U)
+#define USIM_IRQENABLE_RXDMA_RDY_EN_MASK (0x00008000U)
+
+#define USIM_IRQENABLE_ATR_START_EN_SHIFT (16U)
+#define USIM_IRQENABLE_ATR_START_EN_MASK (0x00010000U)
+
+#define USIM_IRQENABLE_ACT_DONE_EN_SHIFT (17U)
+#define USIM_IRQENABLE_ACT_DONE_EN_MASK (0x00020000U)
+
+#define USIM_IRQENABLE_DEACT_DONE_EN_SHIFT (18U)
+#define USIM_IRQENABLE_DEACT_DONE_EN_MASK (0x00040000U)
+
+#define USIM_IRQENABLE_TX_BLOCK_DONE_EN_SHIFT (19U)
+#define USIM_IRQENABLE_TX_BLOCK_DONE_EN_MASK (0x00080000U)
+
+#define USIM_IRQENABLE_TX_BLOCK_REQ_EN_SHIFT (20U)
+#define USIM_IRQENABLE_TX_BLOCK_REQ_EN_MASK (0x00100000U)
+
+#define USIM_WAKEUPEN_STOP_CLK_SHIFT (12U)
+#define USIM_WAKEUPEN_STOP_CLK_MASK (0x00001000U)
+
+#define USIM_WAKEUPEN_NATR_EN_SHIFT (0U)
+#define USIM_WAKEUPEN_NATR_EN_MASK (0x00000001U)
+
+#define USIM_WAKEUPEN_WT_EN_SHIFT (1U)
+#define USIM_WAKEUPEN_WT_EN_MASK (0x00000002U)
+
+#define USIM_WAKEUPEN_RXFULL_EN_SHIFT (2U)
+#define USIM_WAKEUPEN_RXFULL_EN_MASK (0x00000004U)
+
+#define USIM_WAKEUPEN_TX_EN_SHIFT (3U)
+#define USIM_WAKEUPEN_TX_EN_MASK (0x00000008U)
+
+#define USIM_WAKEUPEN_RX_EN_SHIFT (4U)
+#define USIM_WAKEUPEN_RX_EN_MASK (0x00000010U)
+
+#define USIM_WAKEUPEN_CD_EN_SHIFT (5U)
+#define USIM_WAKEUPEN_CD_EN_MASK (0x00000020U)
+
+#define USIM_WAKEUPEN_EOB_EN_SHIFT (6U)
+#define USIM_WAKEUPEN_EOB_EN_MASK (0x00000040U)
+
+#define USIM_WAKEUPEN_TOC_EN_SHIFT (7U)
+#define USIM_WAKEUPEN_TOC_EN_MASK (0x00000080U)
+
+#define USIM_WAKEUPEN_TOB_EN_SHIFT (8U)
+#define USIM_WAKEUPEN_TOB_EN_MASK (0x00000100U)
+
+#define USIM_WAKEUPEN_RESENT_EN_SHIFT (9U)
+#define USIM_WAKEUPEN_RESENT_EN_MASK (0x00000200U)
+
+#define USIM_WAKEUPEN_TS_ERR_EN_SHIFT (10U)
+#define USIM_WAKEUPEN_TS_ERR_EN_MASK (0x00000400U)
+
+#define USIM_WAKEUPEN_EMV_ATR_LENGTH_TIME_OUT_EN_SHIFT (11U)
+#define USIM_WAKEUPEN_EMV_ATR_LENGTH_TIME_OUT_EN_MASK (0x00000800U)
+
+#define USIM_WAKEUPEN_RESERVED_SHIFT (21U)
+#define USIM_WAKEUPEN_RESERVED_MASK (0xffe00000U)
+
+#define USIM_WAKEUPEN_PAR_ERR_LEVEL_REACHED_EN_SHIFT (13U)
+#define USIM_WAKEUPEN_PAR_ERR_LEVEL_REACHED_EN_MASK (0x00002000U)
+
+#define USIM_WAKEUPEN_FRAME_ERR_EN_SHIFT (14U)
+#define USIM_WAKEUPEN_FRAME_ERR_EN_MASK (0x00004000U)
+
+#define USIM_WAKEUPEN_RXDMA_RDY_EN_SHIFT (15U)
+#define USIM_WAKEUPEN_RXDMA_RDY_EN_MASK (0x00008000U)
+
+#define USIM_WAKEUPEN_ATR_START_EN_SHIFT (16U)
+#define USIM_WAKEUPEN_ATR_START_EN_MASK (0x00010000U)
+
+#define USIM_WAKEUPEN_ACT_DONE_EN_SHIFT (17U)
+#define USIM_WAKEUPEN_ACT_DONE_EN_MASK (0x00020000U)
+
+#define USIM_WAKEUPEN_DEACT_DONE_EN_SHIFT (18U)
+#define USIM_WAKEUPEN_DEACT_DONE_EN_MASK (0x00040000U)
+
+#define USIM_WAKEUPEN_TX_BLOCK_DONE_EN_SHIFT (19U)
+#define USIM_WAKEUPEN_TX_BLOCK_DONE_EN_MASK (0x00080000U)
+
+#define USIM_WAKEUPEN_TX_BLOCK_REQ_EN_SHIFT (20U)
+#define USIM_WAKEUPEN_TX_BLOCK_REQ_EN_MASK (0x00100000U)
+
+#define USIM_CMD_RESERVED_0_SHIFT (0U)
+#define USIM_CMD_RESERVED_0_MASK (0x00000001U)
+
+#define USIM_CMD_CMDSTOP_SHIFT (1U)
+#define USIM_CMD_CMDSTOP_MASK (0x00000002U)
+#define USIM_CMD_CMDSTOP_CMDSTOP_VALUE_0 (0U)
+#define USIM_CMD_CMDSTOP_CMDSTOP_VALUE_1 (1U)
+
+#define USIM_CMD_CMDSTART_SHIFT (2U)
+#define USIM_CMD_CMDSTART_MASK (0x00000004U)
+#define USIM_CMD_CMDSTART_CMDSTART_VALUE_0 (0U)
+#define USIM_CMD_CMDSTART_CMDSTART_VALUE_1 (1U)
+
+#define USIM_CMD_MODULE_CLK_EN_SHIFT (3U)
+#define USIM_CMD_MODULE_CLK_EN_MASK (0x00000008U)
+#define USIM_CMD_MODULE_CLK_EN_0 (0U)
+#define USIM_CMD_MODULE_CLK_EN_1 (1U)
+
+#define USIM_CMD_CMD_WARM_RST_SHIFT (4U)
+#define USIM_CMD_CMD_WARM_RST_MASK (0x00000010U)
+#define USIM_CMD_CMD_WARM_RST_WARM_RST_VALUE_1 (1U)
+#define USIM_CMD_CMD_WARM_RST_WARM_RST_VALUE_0 (0U)
+
+#define USIM_CMD_CMD_CLOCK_STOP_SHIFT (5U)
+#define USIM_CMD_CMD_CLOCK_STOP_MASK (0x00000020U)
+#define USIM_CMD_CMD_CLOCK_STOP_1 (1U)
+#define USIM_CMD_CMD_CLOCK_STOP_0 (0U)
+
+#define USIM_CMD_RESERVED_7_31_SHIFT (7U)
+#define USIM_CMD_RESERVED_7_31_MASK (0xffffff80U)
+
+#define USIM_CMD_STOP_EMV_ATR_LENGTH_TIMER_SHIFT (6U)
+#define USIM_CMD_STOP_EMV_ATR_LENGTH_TIMER_MASK (0x00000040U)
+#define USIM_CMD_STOP_EMV_ATR_LENGTH_TIMER_1 (1U)
+#define USIM_CMD_STOP_EMV_ATR_LENGTH_TIMER_0 (0U)
+
+#define USIM_STAT_STATNOCARD_SHIFT (0U)
+#define USIM_STAT_STATNOCARD_MASK (0x00000001U)
+#define USIM_STAT_STATNOCARD_STATNOCARD_VALUE_1 (1U)
+#define USIM_STAT_STATNOCARD_STATNOCARD_VALUE_0 (0U)
+#define USIM_STAT_STATNOCARD_WRITE0 (0U)
+#define USIM_STAT_STATNOCARD_WRITE1 (1U)
+
+#define USIM_STAT_RESERVED_7_31_SHIFT (7U)
+#define USIM_STAT_RESERVED_7_31_MASK (0xffffff80U)
+
+#define USIM_STAT_STATTXPAR_SHIFT (1U)
+#define USIM_STAT_STATTXPAR_MASK (0x00000002U)
+#define USIM_STAT_STATTXPAR_STATTXPAR_VALUE_1 (1U)
+#define USIM_STAT_STATTXPAR_STATTXPAR_VALUE_0 (0U)
+
+#define USIM_STAT_STATLRC_SHIFT (2U)
+#define USIM_STAT_STATLRC_MASK (0x00000004U)
+#define USIM_STAT_STATLRC_STATLRC_VALUE_1 (1U)
+#define USIM_STAT_STATLRC_STATLRC_VALUE_0 (0U)
+
+#define USIM_STAT_CONFCODCONV_SHIFT (3U)
+#define USIM_STAT_CONFCODCONV_MASK (0x00000008U)
+#define USIM_STAT_CONFCODCONV_CONFCODCONV_VALUE_1 (1U)
+#define USIM_STAT_CONFCODCONV_CONFCODCONV_VALUE_0 (0U)
+
+#define USIM_STAT_RESERVED_SHIFT (4U)
+#define USIM_STAT_RESERVED_MASK (0x00000010U)
+
+#define USIM_STAT_FDDEACTSTATE_SHIFT (5U)
+#define USIM_STAT_FDDEACTSTATE_MASK (0x00000020U)
+#define USIM_STAT_FDDEACTSTATE_FDDEACTSTATE_VALUE_0 (0U)
+#define USIM_STAT_FDDEACTSTATE_FDDEACTSTATE_VALUE_1 (1U)
+
+#define USIM_STAT_ATRRX_AFTER_TIMEOUT_SHIFT (6U)
+#define USIM_STAT_ATRRX_AFTER_TIMEOUT_MASK (0x00000040U)
+
+#define USIM_CONF1_CONFSIOLOW_SHIFT (1U)
+#define USIM_CONF1_CONFSIOLOW_MASK (0x00000002U)
+#define USIM_CONF1_CONFSIOLOW_CONFSIOLOW_VALUE_0 (0U)
+#define USIM_CONF1_CONFSIOLOW_CONFSIOLOW_VALUE_1 (1U)
+
+#define USIM_CONF1_RESERVED_8_31_SHIFT (8U)
+#define USIM_CONF1_RESERVED_8_31_MASK (0xffffff00U)
+
+#define USIM_CONF1_SCLKLEV_SHIFT (0U)
+#define USIM_CONF1_SCLKLEV_MASK (0x00000001U)
+#define USIM_CONF1_SCLKLEV_SCLKLEV_VALUE_0 (0U)
+#define USIM_CONF1_SCLKLEV_SCLKLEV_VALUE_1 (1U)
+
+#define USIM_CONF1_CONFBYPASS_SHIFT (2U)
+#define USIM_CONF1_CONFBYPASS_MASK (0x00000004U)
+#define USIM_CONF1_CONFBYPASS_CONFBYPASS_VALUE_0 (0U)
+#define USIM_CONF1_CONFBYPASS_CONFBYPASS_VALUE_1 (1U)
+
+#define USIM_CONF1_SVCCLEV_SHIFT (3U)
+#define USIM_CONF1_SVCCLEV_MASK (0x00000008U)
+#define USIM_CONF1_SVCCLEV_SVCCLEV_VALUE_0 (0U)
+#define USIM_CONF1_SVCCLEV_SVCCLEV_VALUE_1 (1U)
+
+#define USIM_CONF1_SRSTLEV_SHIFT (4U)
+#define USIM_CONF1_SRSTLEV_MASK (0x00000010U)
+#define USIM_CONF1_SRSTLEV_SRSTLEV_VALUE_0 (0U)
+#define USIM_CONF1_SRSTLEV_SRSTLEV_VALUE_1 (1U)
+
+#define USIM_CONF1_CONF_SCLK_EN_SHIFT (5U)
+#define USIM_CONF1_CONF_SCLK_EN_MASK (0x00000020U)
+#define USIM_CONF1_CONF_SCLK_EN_CONF_SCLK_EN_VALUE_0 (0U)
+#define USIM_CONF1_CONF_SCLK_EN_CONF_SCLK_EN_VALUE_1 (1U)
+#define USIM_CONF1_EMV_CONF_SHIFT (6U)
+#define USIM_CONF1_EMV_CONF_MASK (0x00000040U)
+#define USIM_CONF1_EMV_CONF_EMV_CONF_VALUE_0 (0U)
+#define USIM_CONF1_EMV_CONF_EMV_CONF_VALUE_1 (1U)
+#define USIM_CONF1_BYPASS_HW_AUTO_SHIFT (7U)
+#define USIM_CONF1_BYPASS_HW_AUTO_MASK (0x00000080U)
+#define USIM_CONF1_BYPASS_HW_AUTO_BYPASS_HW_AUTO_VALUE_0 (0U)
+#define USIM_CONF1_BYPASS_HW_AUTO_BYPASS_HW_AUTO_VALUE_1 (1U)
+
+#define USIM_CONF2_CONFCHKPAR_SHIFT (0U)
+#define USIM_CONF2_CONFCHKPAR_MASK (0x00000001U)
+#define USIM_CONF2_CONFCHKPAR_CONFCHKPAR_VALUE_0 (0U)
+#define USIM_CONF2_CONFCHKPAR_CONFCHKPAR_VALUE_1 (1U)
+#define USIM_CONF2_RESERVED_22_31_SHIFT (22U)
+#define USIM_CONF2_RESERVED_22_31_MASK (0xffc00000U)
+#define USIM_CONF2_TX_EN_SHIFT (1U)
+#define USIM_CONF2_TX_EN_MASK (0x00000002U)
+#define USIM_CONF2_CONFSCLKDIV_SHIFT (2U)
+#define USIM_CONF2_CONFSCLKDIV_MASK (0x0000000cU)
+#define USIM_CONF2_ATR_ASYN_BYPASS_SHIFT (4U)
+#define USIM_CONF2_ATR_ASYN_BYPASS_MASK (0x00000010U)
+#define USIM_CONF2_ATR_ASYN_BYPASS_ATR_ASYN_BYPASS_VALUE_0 (0U)
+#define USIM_CONF2_ATR_ASYN_BYPASS_ATR_ASYN_BYPASS_VALUE_1 (1U)
+#define USIM_CONF2_CONFPROTOCOL_SHIFT (5U)
+#define USIM_CONF2_CONFPROTOCOL_MASK (0x00000020U)
+#define USIM_CONF2_CONFPROTOCOL_CONFPROTOCOL_VALUE_0 (0U)
+#define USIM_CONF2_CONFPROTOCOL_CONFPROTOCOL_VALUE_1 (1U)
+#define USIM_CONF2_CONFEDC_SHIFT (6U)
+#define USIM_CONF2_CONFEDC_MASK (0x00000040U)
+#define USIM_CONF2_CONFEDC_CONFEDC_VALUE_0 (0U)
+#define USIM_CONF2_CONFEDC_CONFEDC_VALUE_1 (1U)
+#define USIM_CONF2_CONFLRCCHECK_SHIFT (7U)
+#define USIM_CONF2_CONFLRCCHECK_MASK (0x00000080U)
+#define USIM_CONF2_CONFLRCCHECK_CONFLRCCHECK_VALUE_0 (0U)
+#define USIM_CONF2_CONFLRCCHECK_CONFLRCCHECK_VALUE_1 (1U)
+#define USIM_CONF2_CONFRESENT_SHIFT (8U)
+#define USIM_CONF2_CONFRESENT_MASK (0x00000700U)
+
+#define USIM_CONF2_CARD_POLARITY_SHIFT (11U)
+#define USIM_CONF2_CARD_POLARITY_MASK (0x00000800U)
+#define USIM_CONF2_CARD_POLARITY_CARD_POLARITY_VALUE_0 (0U)
+#define USIM_CONF2_CARD_POLARITY_CARD_POLARITY_VALUE_1 (1U)
+
+#define USIM_CONF2_HW_DEACTIV_EN_SHIFT (12U)
+#define USIM_CONF2_HW_DEACTIV_EN_MASK (0x00001000U)
+#define USIM_CONF2_HW_DEACTIV_EN_HW_DEACTIV_EN_VALUE_0 (0U)
+#define USIM_CONF2_HW_DEACTIV_EN_HW_DEACTIV_EN_VALUE_1 (1U)
+
+#define USIM_CONF2_DEBOUNCE_EN_SHIFT (13U)
+#define USIM_CONF2_DEBOUNCE_EN_MASK (0x00002000U)
+#define USIM_CONF2_DEBOUNCE_EN_DEBOUNCE_EN_VALUE0 (0U)
+#define USIM_CONF2_DEBOUNCE_EN_DEBOUNCE_EN_VALUE1 (1U)
+
+#define USIM_CONF2_PUT_ERR_IN_FIFO_SHIFT (14U)
+#define USIM_CONF2_PUT_ERR_IN_FIFO_MASK (0x00004000U)
+
+#define USIM_CONF2_NACKING_EN_SHIFT (15U)
+#define USIM_CONF2_NACKING_EN_MASK (0x00008000U)
+#define USIM_CONF2_NACKING_EN_DISABLED (0U)
+#define USIM_CONF2_NACKING_EN_RXFIFO_FULL_NACK (1U)
+
+#define USIM_CONF2_PAR_ERR_LEVEL_SHIFT (16U)
+#define USIM_CONF2_PAR_ERR_LEVEL_MASK (0x00070000U)
+
+#define USIM_CONF2_CONFSCLKMODE_SHIFT (19U)
+#define USIM_CONF2_CONFSCLKMODE_MASK (0x00080000U)
+
+#define USIM_CONF2_STOP_RESEND_FAILURE_SHIFT (20U)
+#define USIM_CONF2_STOP_RESEND_FAILURE_MASK (0x00100000U)
+
+#define USIM_CONF2_STOP_RX_TIMEOUT_SHIFT (21U)
+#define USIM_CONF2_STOP_RX_TIMEOUT_MASK (0x00200000U)
+
+#define USIM_CONF3_TDUSIM_SHIFT (4U)
+#define USIM_CONF3_TDUSIM_MASK (0x000000f0U)
+
+#define USIM_CONF3_TFUSIM_SHIFT (0U)
+#define USIM_CONF3_TFUSIM_MASK (0x0000000fU)
+
+#define USIM_CONF3_RESERVED_8_31_SHIFT (8U)
+#define USIM_CONF3_RESERVED_8_31_MASK (0xffffff00U)
+
+#define USIM_DRX_USIMDRX_SHIFT (0U)
+#define USIM_DRX_USIMDRX_MASK (0x000000ffU)
+
+#define USIM_DRX_STATRXPAR_SHIFT (8U)
+#define USIM_DRX_STATRXPAR_MASK (0x00000100U)
+#define USIM_DRX_STATRXPAR_STATRXPAR_VALUE_1 (1U)
+#define USIM_DRX_STATRXPAR_STATRXPAR_VALUE_0 (0U)
+
+#define USIM_DRX_RESERVED_9_31_SHIFT (9U)
+#define USIM_DRX_RESERVED_9_31_MASK (0xfffffe00U)
+
+#define USIM_DTX_DTX_SHIFT (0U)
+#define USIM_DTX_DTX_MASK (0x000000ffU)
+
+#define USIM_DTX_RESERVED_8_31_SHIFT (8U)
+#define USIM_DTX_RESERVED_8_31_MASK (0xffffff00U)
+
+#define USIM_FIFOS_DMA_MODE_SHIFT (0U)
+#define USIM_FIFOS_DMA_MODE_MASK (0x00000001U)
+#define USIM_FIFOS_DMA_MODE_DMA_MODE_VALUE_1 (1U)
+#define USIM_FIFOS_DMA_MODE_DMA_MODE_VALUE_0 (0U)
+
+#define USIM_FIFOS_FIFO_ENABLE_SHIFT (1U)
+#define USIM_FIFOS_FIFO_ENABLE_MASK (0x00000002U)
+#define USIM_FIFOS_FIFO_ENABLE_FIFO_ENABLE_VALUE_1 (1U)
+#define USIM_FIFOS_FIFO_ENABLE_FIFO_ENABLE_VALUE_0 (0U)
+
+#define USIM_FIFOS_FIFO_TX_TRIGGER_SHIFT (23U)
+#define USIM_FIFOS_FIFO_TX_TRIGGER_MASK (0xff800000U)
+
+#define USIM_FIFOS_FIFOTX_RESET_SHIFT (6U)
+#define USIM_FIFOS_FIFOTX_RESET_MASK (0x00000040U)
+#define USIM_FIFOS_FIFOTX_RESET_FIFOTX_RESET_VALUE_1 (1U)
+#define USIM_FIFOS_FIFOTX_RESET_FIFOTX_RESET_VALUE_0 (0U)
+
+#define USIM_FIFOS_FIFOTX_EMPTY_SHIFT (7U)
+#define USIM_FIFOS_FIFOTX_EMPTY_MASK (0x00000080U)
+#define USIM_FIFOS_FIFOTX_EMPTY_FIFOTX_EMPTY_VALUE_1 (1U)
+#define USIM_FIFOS_FIFOTX_EMPTY_FIFOTX_EMPTY_VALUE_0 (0U)
+
+#define USIM_FIFOS_FIFOTX_FULL_SHIFT (8U)
+#define USIM_FIFOS_FIFOTX_FULL_MASK (0x00000100U)
+#define USIM_FIFOS_FIFOTX_FULL_FIFOTX_FULL_VALUE_1 (1U)
+#define USIM_FIFOS_FIFOTX_FULL_FIFOTX_FULL_VALUE_0 (0U)
+
+#define USIM_FIFOS_FIFO_RX_TRIGGER_SHIFT (9U)
+#define USIM_FIFOS_FIFO_RX_TRIGGER_MASK (0x0003fe00U)
+
+#define USIM_FIFOS_FIFORX_RESET_SHIFT (18U)
+#define USIM_FIFOS_FIFORX_RESET_MASK (0x00040000U)
+#define USIM_FIFOS_FIFORX_RESET_FIFORX_RESET_VALUE_1 (1U)
+#define USIM_FIFOS_FIFORX_RESET_FIFORX_RESET_VALUE_0 (0U)
+
+#define USIM_FIFOS_FIFORX_EMPTY_SHIFT (19U)
+#define USIM_FIFOS_FIFORX_EMPTY_MASK (0x00080000U)
+#define USIM_FIFOS_FIFORX_EMPTY_FIFORX_EMPTY_VALUE_1 (1U)
+#define USIM_FIFOS_FIFORX_EMPTY_FIFORX_EMPTY_VALUE_0 (0U)
+
+#define USIM_FIFOS_FIFORX_FULL_SHIFT (20U)
+#define USIM_FIFOS_FIFORX_FULL_MASK (0x00100000U)
+#define USIM_FIFOS_FIFORX_FULL_FIFORX_FULL_VALUE_1 (1U)
+#define USIM_FIFOS_FIFORX_FULL_FIFORX_FULL_VALUE_0 (0U)
+
+#define USIM_FIFOS_RXDMA_TYPE_SHIFT (21U)
+#define USIM_FIFOS_RXDMA_TYPE_MASK (0x00600000U)
+#define USIM_FIFOS_RXDMA_TYPE_LEGACY (0U)
+#define USIM_FIFOS_RXDMA_TYPE_NEW1 (2U)
+#define USIM_FIFOS_RXDMA_TYPE_NEW2 (3U)
+
+#define USIM_FIFOS_RESERVED_SHIFT (2U)
+#define USIM_FIFOS_RESERVED_MASK (0x0000003cU)
+
+#define USIM_CGT_RESERVED_9_31_SHIFT (9U)
+#define USIM_CGT_RESERVED_9_31_MASK (0xfffffe00U)
+
+#define USIM_CGT_CGT_SHIFT (0U)
+#define USIM_CGT_CGT_MASK (0x000001ffU)
+
+#define USIM_CWT_CWT_SHIFT (0U)
+#define USIM_CWT_CWT_MASK (0xffffffffU)
+
+#define USIM_BWT_BWT_SHIFT (0U)
+#define USIM_BWT_BWT_MASK (0xffffffffU)
+
+#define USIM_DEBUG_RESERVED_25_31_SHIFT (25U)
+#define USIM_DEBUG_RESERVED_25_31_MASK (0xfe000000U)
+
+#define USIM_DEBUG_MAIN_STATE_DEBUG_SHIFT (0U)
+#define USIM_DEBUG_MAIN_STATE_DEBUG_MASK (0x0000000fU)
+
+#define USIM_DEBUG_TX_STATE_MACHINE_SHIFT (4U)
+#define USIM_DEBUG_TX_STATE_MACHINE_MASK (0x00000030U)
+
+#define USIM_DEBUG_RX_STATE_MACHINE_SHIFT (6U)
+#define USIM_DEBUG_RX_STATE_MACHINE_MASK (0x000000c0U)
+
+#define USIM_DEBUG_RXFIFO_PEAK_SHIFT (8U)
+#define USIM_DEBUG_RXFIFO_PEAK_MASK (0x0003ff00U)
+
+#define USIM_DEBUG_RXDMA_SHIFT (18U)
+#define USIM_DEBUG_RXDMA_MASK (0x00040000U)
+
+#define USIM_DEBUG_TXDMA_SHIFT (19U)
+#define USIM_DEBUG_TXDMA_MASK (0x00080000U)
+
+#define USIM_DEBUG_EMV_MAIN_STATE_DEBUG_SHIFT (20U)
+#define USIM_DEBUG_EMV_MAIN_STATE_DEBUG_MASK (0x01f00000U)
+
+#define USIM_CONF_SAM1_DIV_RESERVED_12_31_SHIFT (12U)
+#define USIM_CONF_SAM1_DIV_RESERVED_12_31_MASK (0xfffff000U)
+
+#define USIM_CONF_SAM1_DIV_SAM1_DIV_SHIFT (0U)
+#define USIM_CONF_SAM1_DIV_SAM1_DIV_MASK (0x00000fffU)
+
+#define USIM_CONF4_RESERVED_16_31_SHIFT (16U)
+#define USIM_CONF4_RESERVED_16_31_MASK (0xffff0000U)
+
+#define USIM_CONF4_CONFWAITI_SHIFT (0U)
+#define USIM_CONF4_CONFWAITI_MASK (0x0000ffffU)
+
+#define USIM_ATR_CLK_PRD_NBS_RESERVED_16_31_SHIFT (16U)
+#define USIM_ATR_CLK_PRD_NBS_RESERVED_16_31_MASK (0xffff0000U)
+
+#define USIM_ATR_CLK_PRD_NBS_CLOCK_NUMBER_BEFORE_ATR_SHIFT (0U)
+#define USIM_ATR_CLK_PRD_NBS_CLOCK_NUMBER_BEFORE_ATR_MASK (0x0000ffffU)
+
+#define USIM_CONF_ETU_DIV_RESERVED_16_31_SHIFT (16U)
+#define USIM_CONF_ETU_DIV_RESERVED_16_31_MASK (0xffff0000U)
+
+#define USIM_CONF_ETU_DIV_ETU_DIV_SHIFT (0U)
+#define USIM_CONF_ETU_DIV_ETU_DIV_MASK (0x0000ffffU)
+
+#define USIM_CONF5_RESERVED_12_31_SHIFT (9U)
+#define USIM_CONF5_RESERVED_12_31_MASK (0xfffffe00U)
+
+#define USIM_CONF5_DI_SHIFT (0U)
+#define USIM_CONF5_DI_MASK (0x0000000fU)
+
+#define USIM_CONF5_FI_SHIFT (4U)
+#define USIM_CONF5_FI_MASK (0x000000f0U)
+
+#define USIM_CONF5_SOFT_NHARD_FIDI_PROG_SHIFT (8U)
+#define USIM_CONF5_SOFT_NHARD_FIDI_PROG_MASK (0x00000100U)
+#define USIM_CONF5_SOFT_NHARD_FIDI_PROG_HARDWARE (0U)
+#define USIM_CONF5_SOFT_NHARD_FIDI_PROG_SOFTWARE (1U)
+
+#define USIM_TC_GUARD_TIME_ADD_RESERVED_14_31_SHIFT (14U)
+#define USIM_TC_GUARD_TIME_ADD_RESERVED_14_31_MASK (0xffffc000U)
+
+#define USIM_TC_GUARD_TIME_ADD_SOFT_TC_GUARD_TIME_ADD_EN_SHIFT (13U)
+#define USIM_TC_GUARD_TIME_ADD_SOFT_TC_GUARD_TIME_ADD_EN_MASK (0x00002000U)
+#define USIM_TC_GUARD_TIME_ADD_SOFT_TC_GUARD_TIME_ADD_EN_HW (0U)
+#define USIM_TC_GUARD_TIME_ADD_SOFT_TC_GUARD_TIME_ADD_EN_SW (1U)
+
+#define USIM_TC_GUARD_TIME_ADD_SOFT_TC_GUARD_TIME_ADD_SHIFT (0U)
+#define USIM_TC_GUARD_TIME_ADD_SOFT_TC_GUARD_TIME_ADD_MASK (0x00001fffU)
+
+#define USIM_RXFIFO_LEVEL_USIM_RXFIFO_LEVEL_SHIFT (0U)
+#define USIM_RXFIFO_LEVEL_USIM_RXFIFO_LEVEL_MASK (0x000003ffU)
+
+#define USIM_RXFIFO_LEVEL_RESERVED_SHIFT (10U)
+#define USIM_RXFIFO_LEVEL_RESERVED_MASK (0xfffffc00U)
+
+#define USIM_RXFIFO_BYTECNT_USIM_RXFIFO_BYTECNT_SHIFT (0U)
+#define USIM_RXFIFO_BYTECNT_USIM_RXFIFO_BYTECNT_MASK (0x000001ffU)
+
+#define USIM_RXFIFO_BYTECNT_RESERVED_SHIFT (9U)
+#define USIM_RXFIFO_BYTECNT_RESERVED_MASK (0xfffffe00U)
+
+#define USIM_WWT_WWT_SHIFT (0U)
+#define USIM_WWT_WWT_MASK (0xffffffffU)
+
+#define USIM_CONF6_MODE_SHIFT (0U)
+#define USIM_CONF6_MODE_MASK (0x00000007U)
+#define USIM_CONF6_MODE_NO_OVERRIDE (0U)
+#define USIM_CONF6_MODE_FREEZE (1U)
+#define USIM_CONF6_MODE_RX_TX (2U)
+#define USIM_CONF6_MODE_ATR (3U)
+#define USIM_CONF6_MODE_ACTIVATE (4U)
+#define USIM_CONF6_MODE_DEACTIVATE (5U)
+#define USIM_CONF6_MODE_IDLE (6U)
+#define USIM_CONF6_MODE_RESERVED7 (7U)
+
+#define USIM_CONF6_RST_POLARITY_SHIFT (3U)
+#define USIM_CONF6_RST_POLARITY_MASK (0x00000008U)
+#define USIM_CONF6_RST_POLARITY_ACTIVE_LOW (0U)
+#define USIM_CONF6_RST_POLARITY_ACTIVE_HIGH (1U)
+
+#define USIM_CONF6_RESERVED_SHIFT (12U)
+#define USIM_CONF6_RESERVED_MASK (0x0000f000U)
+
+#define USIM_CONF6_ATR_TIMER_BYPASS_SHIFT (4U)
+#define USIM_CONF6_ATR_TIMER_BYPASS_MASK (0x00000010U)
+
+#define USIM_CONF6_IO_BYPASS_SHIFT (5U)
+#define USIM_CONF6_IO_BYPASS_MASK (0x00000060U)
+#define USIM_CONF6_IO_BYPASS_00 (0U)
+#define USIM_CONF6_IO_BYPASS_10 (2U)
+#define USIM_CONF6_IO_BYPASS_01 (1U)
+#define USIM_CONF6_IO_BYPASS_11 (3U)
+
+#define USIM_CONF6_SCLK0_BYPASS_SHIFT (7U)
+#define USIM_CONF6_SCLK0_BYPASS_MASK (0x00000080U)
+
+#define USIM_CONF6_LEN_BYPASS_MASK (0x00000200U)
+
+#define USIM_CONF6_RST_BYPASS_SHIFT (10U)
+#define USIM_CONF6_RST_BYPASS_MASK (0x00000400U)
+
+#define USIM_CONF6_VCC_BYPASS_SHIFT (11U)
+#define USIM_CONF6_VCC_BYPASS_MASK (0x00000800U)
+
+#define USIM_CONF6_ATR_TIMEOUT_SHIFT (16U)
+#define USIM_CONF6_ATR_TIMEOUT_MASK (0xffff0000U)
+
+#define USIM_IO_DIRECT_SCLK0_SHIFT (0U)
+#define USIM_IO_DIRECT_SCLK0_MASK (0x00000001U)
+
+#define USIM_IO_DIRECT_SIORX0_SHIFT (2U)
+#define USIM_IO_DIRECT_SIORX0_MASK (0x00000004U)
+
+#define USIM_IO_DIRECT_SIORX1_SHIFT (3U)
+#define USIM_IO_DIRECT_SIORX1_MASK (0x00000008U)
+
+#define USIM_IO_DIRECT_SIOTX0_SHIFT (4U)
+#define USIM_IO_DIRECT_SIOTX0_MASK (0x00000010U)
+
+#define USIM_IO_DIRECT_SIOEN0_SHIFT (6U)
+#define USIM_IO_DIRECT_SIOEN0_MASK (0x00000040U)
+
+#define USIM_IO_DIRECT_RST_SHIFT (8U)
+#define USIM_IO_DIRECT_RST_MASK (0x00000100U)
+
+#define USIM_IO_DIRECT_SVCC_SHIFT (9U)
+#define USIM_IO_DIRECT_SVCC_MASK (0x00000200U)
+
+#define USIM_IO_DIRECT_SINEX_SHIFT (10U)
+#define USIM_IO_DIRECT_SINEX_MASK (0x00000400U)
+
+#define USIM_IO_DIRECT_LEN_SHIFT (11U)
+#define USIM_IO_DIRECT_LEN_MASK (0x00000800U)
+
+#define USIM_IO_DIRECT_RNW0_SHIFT (12U)
+#define USIM_IO_DIRECT_RNW0_MASK (0x00001000U)
+
+#define USIM_IO_DIRECT_RESERVED_SHIFT (15U)
+#define USIM_IO_DIRECT_RESERVED_MASK (0xffff8000U)
+
+#define USIM_IO_DIRECT_C4_SHIFT (14U)
+#define USIM_IO_DIRECT_C4_MASK (0x00004000U)
+
+#define USIM_TX_BLOCK_BLOCK_LENGTH_SHIFT (0U)
+#define USIM_TX_BLOCK_BLOCK_LENGTH_MASK (0x0000ffffU)
+
+#define USIM_TX_BLOCK_RESERVED_SHIFT (16U)
+#define USIM_TX_BLOCK_RESERVED_MASK (0xffff0000U)
+
+#endif /* __TI_USIM_HW_H__ */
diff --git a/drivers/char/ti-usim.c b/drivers/char/ti-usim.c
new file mode 100644
index 0000000..a2af409
--- /dev/null
+++ b/drivers/char/ti-usim.c
@@ -0,0 +1,1859 @@
+/*
+ * usim.c - USIM driver for Smart Card module
+ *
+ *
+ * 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/kernel.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/io.h>
+#include <linux/fs.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/i2c.h>
+#include <linux/miscdevice.h>
+#include <linux/uaccess.h>
+#include <linux/ctype.h>
+#include <linux/wait.h>
+#include <linux/sched.h>
+#include <linux/debugfs.h>
+#include <linux/notifier.h>
+#include <linux/clk.h>
+/* for send_sig_info */
+#include <linux/rcupdate.h>
+#include <asm/siginfo.h>
+
+#include "ti-usim-hw.h"
+
+#define USIM_WRITEREG(base, offset, field, value) \
+ usim_writereg(base+offset, offset##_##field##_MASK, \
+ offset##_##field##_SHIFT, value)
+
+#define USIM_READREG(base, offset, field) \
+ usim_readreg(base+offset, offset##_##field##_MASK, \
+ offset##_##field##_SHIFT)
+
+#define USIM_SETFIELD(reg, offset, field, value) \
+ usim_setfield(reg, offset##_##field##_MASK, \
+ offset##_##field##_SHIFT, value)
+
+/*
+ * phy states
+ */
+enum usim_phy_state {
+ USIM_PHY_NOT_PRESENT = 0x0,
+ USIM_PHY_PRESENT,
+ USIM_PHY_NOT_ATTACHED,
+};
+
+static struct miscdevice usim_dev;
+
+static DECLARE_WAIT_QUEUE_HEAD(rx_wait);
+static DECLARE_WAIT_QUEUE_HEAD(tx_wait);
+static DECLARE_WAIT_QUEUE_HEAD(atr_wait);
+
+static int usim_set_smartcardclock(struct usim *usim, u32 clock);
+
+static void usim_writereg(void __iomem *base, u32 mask, u32 shift, u32 value)
+{
+ u32 v = readl(base);
+
+ v &= ~mask;
+ v |= (value << shift) & mask;
+ writel(v, base);
+ v = readl(base);
+ return;
+}
+
+static u32 usim_readreg(void __iomem *base, u32 mask, u32 shift)
+{
+ u32 v = readl(base);
+
+ v &= mask;
+ v = (v >> shift);
+ return v;
+}
+
+static u32 usim_setfield(u32 reg, u32 mask, u32 shift, u32 value)
+{
+ reg &= ~mask;
+ reg |= (value << shift) & mask;
+ return reg;
+}
+
+
+static inline void usim_irq_enable(void __iomem *base, u32 irqs)
+{
+ u32 v = readl(base + USIM_IRQENABLE);
+
+ v |= irqs;
+ writel(v, base + USIM_IRQENABLE);
+}
+
+static inline void usim_irq_disable(void __iomem *base, u32 irqs)
+{
+ u32 v = readl(base + USIM_IRQENABLE);
+
+ v &= ~irqs;
+ writel(v, base + USIM_IRQENABLE);
+}
+
+static inline void usim_irq_get(void __iomem *base, u32 *irqs)
+{
+ *irqs = readl(base + USIM_IRQENABLE);
+}
+
+static inline u32 usim_irqstatus(void __iomem *base)
+{
+ return readl(base + USIM_IRQSTATUS);
+}
+
+static inline void usim_irqstatus_clear(void __iomem *base, u32 irqs)
+{
+ writel(irqs, base + USIM_IRQSTATUS);
+}
+
+static inline struct usim *dev_to_usim(struct device *dev)
+{
+ return dev_get_drvdata(dev);
+}
+
+static int usim_send_signal(struct usim *usim, int event)
+{
+ struct siginfo info;
+ struct task_struct *tid;
+ int ret = 0;
+ int pid = usim->user_pid;
+
+ if (pid == 0)
+ return -EINVAL;
+ info.si_signo = USIM_SIGID;
+ info.si_code = SI_QUEUE;
+
+ info.si_int = event;
+ rcu_read_lock();
+
+ /* find task structure associated with this pid */
+ tid = pid_task(find_vpid(pid), PIDTYPE_PID);
+ if (tid == NULL) {
+ dev_err(usim->dev, "usim-err:no such pid :%d\n", pid);
+ rcu_read_unlock();
+ return -ENODEV;
+ }
+
+ rcu_read_unlock();
+
+ /* send the signal */
+ ret = send_sig_info(USIM_SIGID, &info, tid);
+ if (ret < 0) {
+ dev_err(usim->dev, "error sending signal:%d\n", ret);
+ return ret;
+ }
+ return 0;
+}
+
+static void usim_getrx(struct usim *usim)
+{
+ u32 rxlen = 0;
+ u32 cnt = 0;
+
+ /* Check if FIFO contains some data */
+ rxlen = USIM_READREG(usim->base, USIM_RXFIFO_LEVEL,
+ USIM_RXFIFO_LEVEL);
+
+ usim->slot_ctx[usim->slot].rx_counter += rxlen;
+ if (rxlen > 0) {
+ for (cnt = 0; cnt < rxlen; cnt++) {
+ usim->slot_ctx[usim->slot].rxbuf[cnt] =
+ USIM_READREG(usim->base, USIM_DRX, USIMDRX);
+ }
+ }
+}
+
+static void usim_irq_atrhandler(struct usim *usim, u32 reg)
+{
+ u32 event = 0;
+ u32 val = 0;
+ u32 cnt = 0;
+ u32 rxval = 0;
+ if (usim->atrdone)
+ return;
+ do {
+ /* WWT would be used to identify end of ATR */
+ if (reg & (USIM_IRQ_WT | USIM_IRQ_EMV_ATR_LENGTH_TIME_OUT)) {
+ event |= USIM_EVENT_TIMEOUT;
+ val = USIM_READREG(usim->base, USIM_STAT,
+ ATRRX_AFTER_TIMEOUT);
+ if (val) {
+ /* do not store rx character if it comes after
+ * ATR timeout
+ */
+ dev_dbg(usim->dev, "Error: Rx after ATR Timeout");
+ break;
+ }
+ }
+ if (reg & USIM_IRQ_TS_ERR) {
+ event |= USIM_EVENT_ERR_FRAME;
+ break;
+ }
+
+ /* check the rx fifo and store available bytes in atrbuf */
+ val = USIM_READREG(usim->base, USIM_RXFIFO_LEVEL,
+ USIM_RXFIFO_LEVEL);
+ cnt = usim->slot_ctx[usim->slot].atr_length;
+
+ while (val > 0) {
+ if (cnt < USIM_MAX_ATRLENGTH) {
+ rxval = readl(usim->base + USIM_DRX);
+ usim->slot_ctx[usim->slot].atr[cnt++] = rxval &
+ USIM_DRX_USIMDRX_MASK;
+ /* check of parity */
+ if (!(rxval & USIM_DRX_STATRXPAR_MASK)) {
+ dev_dbg(usim->dev, "Error: incorrect parity:%0x", rxval);
+ event |= USIM_EVENT_ERR_PARITY;
+ }
+ }
+ val--;
+ }
+
+ usim->slot_ctx[usim->slot].atr_length = cnt;
+ } while (0);
+
+ if (event != 0) {
+ USIM_WRITEREG(usim->base, USIM_CONF6, MODE, USIM_MODE_IDLE);
+ usim->slot_ctx[usim->slot].state = USIM_MODE_IDLE;
+ usim->slot_ctx[usim->slot].event = event;
+ usim->atrdone = 1;
+ }
+
+ if (usim->atrdone)
+ wake_up(&atr_wait);
+
+ return;
+}
+
+static void usim_irq_txhandler(struct usim *usim, u32 reg)
+{
+ u32 protocol = 0;
+ u32 event = 0;
+
+ if (usim->txdone)
+ return;
+
+ protocol = usim->slot_ctx[usim->slot].protocol;
+ do {
+ if (reg & USIM_IRQ_FRAME_ERR) {
+ event |= USIM_EVENT_ERR_FRAME;
+ break;
+ }
+ if (!protocol && (reg & USIM_IRQ_RESENT)) {
+ event |= USIM_EVENT_ERR_TXRETRY;
+ break;
+ }
+ if (reg & USIM_IRQ_TX_BLOCK_REQ) {
+ /* TODO : As per EMV max tx block will be of 256 bytes
+ * and USIM controller has sufficient place for this.
+ * Need to implement this case when it is practially
+ * required
+ */
+ dev_dbg(usim->dev, "Error: TX_BLOCK_REQ - Not Implemented");
+ }
+ if (reg & USIM_IRQ_TX_BLOCK_DONE) {
+ usim_irq_disable(usim->base, USIM_IRQ_TX_BLOCK_REQ
+ | USIM_IRQ_TX_BLOCK_DONE
+ | USIM_IRQ_TX);
+ usim->txdone = 1;
+ usim_irq_enable(usim->base, USIM_IRQ_RX | USIM_IRQ_EOB
+ | USIM_IRQ_RXDMA_RDY);
+ break;
+ }
+ } while (0);
+
+ if (event != 0) {
+ USIM_WRITEREG(usim->base, USIM_CONF6, MODE, USIM_MODE_IDLE);
+ usim->slot_ctx[usim->slot].state = USIM_MODE_IDLE;
+ usim->slot_ctx[usim->slot].event = event;
+ usim->txdone = 1;
+ usim->rxdone = 1;
+ }
+ if (usim->txdone)
+ wake_up(&tx_wait);
+ return;
+}
+
+static void usim_irq_rxhandler(struct usim *usim, u32 reg)
+{
+ u32 event = 0;
+ u32 val = 0;
+
+ u32 protocol = usim->slot_ctx[usim->slot].protocol;
+
+ /* if tx not done then do not check of any rx */
+ if (usim->rxdone || !usim->txdone)
+ return;
+
+ /* For T=0 protocol */
+ if (protocol == 0) {
+ do {
+ /* ignore interrupts if expected bytes recevied */
+ if (usim->slot_ctx[usim->slot].rx_counter >=
+ usim->slot_ctx[usim->slot].rx_explen) {
+ dev_dbg(usim->dev, "All bytes recvd,ignore this timeout\n");
+ usim->rxdone = 1;
+ break;
+ }
+
+ if (reg & USIM_IRQ_WT) {
+ dev_dbg(usim->dev, "Expected bytes not recvd counter = %d\n",
+ usim->slot_ctx[usim->slot].rx_counter);
+ usim_getrx(usim);
+ event |= USIM_EVENT_TIMEOUT;
+ break;
+ }
+
+ if (reg & USIM_IRQ_PAR_ERR_LEVEL_REACHED) {
+ dev_err(usim->dev, "Rx parity level reached:%x\n", reg);
+ usim_getrx(usim);
+ event |= USIM_EVENT_ERR_PARITY;
+ break;
+ }
+
+ if (reg & (USIM_IRQ_RX | USIM_IRQ_RXDMA_RDY)) {
+ /* Read number of bytes present in the FIFO */
+ usim_getrx(usim);
+ usim->rxdone = 1;
+ break;
+ }
+ } while (0);
+ } else {
+ /* T=1 protocol */
+ do {
+ if (reg & (USIM_IRQ_TOB | USIM_IRQ_TOC)) {
+ usim_getrx(usim);
+ event |= USIM_EVENT_TIMEOUT;
+ break;
+ }
+ if (reg & USIM_IRQ_EOB) {
+ usim_getrx(usim);
+ usim->rxdone = 1;
+ val = USIM_READREG(usim->base, USIM_STAT,
+ STATLRC);
+ if (val != 0)
+ event |= USIM_EVENT_ERR_LRC;
+ break;
+ }
+ } while (0);
+ }
+
+ if (event != 0 || usim->rxdone == 1) {
+ USIM_WRITEREG(usim->base, USIM_CONF6, MODE, USIM_MODE_IDLE);
+ usim->slot_ctx[usim->slot].state = USIM_MODE_IDLE;
+ usim->slot_ctx[usim->slot].event = event;
+ usim->rxdone = 1;
+ }
+
+ if (usim->rxdone)
+ wake_up(&rx_wait);
+
+ return;
+}
+
+static irqreturn_t usim_interrupt(int irq, void *_usim)
+{
+ u32 reg = 0;
+ u32 state = 0;
+ struct usim *usim = (struct usim *)_usim;
+
+ state = usim->slot_ctx[usim->slot].state;
+
+ spin_lock(&usim->lock);
+
+ reg = readl(usim->base + USIM_IRQSTATUS);
+
+ if (state == USIM_MODE_ATR)
+ usim_irq_atrhandler(usim, reg);
+
+ if (state == USIM_MODE_TXRX) {
+ usim_irq_txhandler(usim, reg);
+ usim_irq_rxhandler(usim, reg);
+ }
+
+ if (reg & USIM_IRQSTATUS_USIM_NATR_MASK)
+ dev_dbg(usim->dev, "NO ATR\n");
+
+ if (reg & USIM_IRQSTATUS_USIM_CD_MASK)
+ dev_dbg(usim->dev, "CARD Insert/Removed\n");
+
+ if (reg & USIM_IRQSTATUS_USIM_STOP_CLK_MASK)
+ dev_dbg(usim->dev, "SIM CLK STOPPED\n");
+
+ if (reg & USIM_IRQSTATUS_ACT_DONE_MASK)
+ dev_dbg(usim->dev, "Activation Sequence completed\n");
+
+ if (reg & USIM_IRQSTATUS_DEACT_DONE_MASK)
+ dev_dbg(usim->dev, "Deactivation Sequence complteted\n");
+
+ /* Clear the interrupt by writing the corresponding bit
+ * in IRQ_STATUS register
+ */
+ usim_irqstatus_clear(usim->base, reg);
+
+ spin_unlock(&usim->lock);
+
+ return IRQ_HANDLED;
+}
+
+static int usim_configure(struct usim *usim)
+{
+ int reg = 0;
+
+ /* activate phy */
+ if (usim->phy_present)
+ usim->phy->set_config(usim->phy, usim->slot, SC_PHY_MODE,
+ SC_PHY_ACTIVE);
+
+ /* Disable Auto Idle and set NO IDLE config */
+ reg = readl(usim->base + USIM_SYSCONFIG);
+ reg = USIM_SETFIELD(reg, USIM_SYSCONFIG, AUTOIDLE, 0);
+ reg = USIM_SETFIELD(reg, USIM_SYSCONFIG, IDLEMODE, 1);
+ writel(reg, usim->base + USIM_SYSCONFIG);
+
+ if (usim->phy_present) {
+ USIM_WRITEREG(usim->base, USIM_STAT, STATNOCARD, 1);
+ USIM_WRITEREG(usim->base, USIM_CONF1, BYPASS_HW_AUTO, 0);
+ } else {
+ USIM_WRITEREG(usim->base, USIM_STAT, STATNOCARD, 0);
+ USIM_WRITEREG(usim->base, USIM_CONF1, BYPASS_HW_AUTO, 1);
+ }
+
+ /* Set default card type as EMV, Force SIO to low level */
+ reg = readl(usim->base + USIM_CONF1);
+ reg = USIM_SETFIELD(reg, USIM_CONF1, EMV_CONF, 1);
+ reg = USIM_SETFIELD(reg, USIM_CONF1, CONFSIOLOW, 1);
+ writel(reg, usim->base + USIM_CONF1);
+
+ /* Set parity level to 1, auto resent to 2 on parity error, */
+ reg = readl(usim->base + USIM_CONF2);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, NACKING_EN, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, CARD_POLARITY, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, CONFEDC, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, CONFPROTOCOL, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, ATR_ASYN_BYPASS, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, CONFSCLKDIV, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, CONFSCLKMODE, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, PAR_ERR_LEVEL, 1);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, CONFRESENT, 2);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, PUT_ERR_IN_FIFO, 1);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, CONFLRCCHECK, 2);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, CONFSCLKDIV, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, CONFCHKPAR, 1);
+
+ if (usim->phy_present) {
+ reg = USIM_SETFIELD(reg, USIM_CONF2, HW_DEACTIV_EN, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF2, DEBOUNCE_EN, 0);
+ } else {
+ reg = USIM_SETFIELD(reg, USIM_CONF2, HW_DEACTIV_EN, 1);
+ }
+
+ writel(reg, usim->base + USIM_CONF2);
+
+ /* Reset Tx FIFO Pointer */
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFOTX_RESET, 1);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFOTX_RESET, 0);
+
+ /* Reset Rx FIFO Pointer */
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFORX_RESET, 1);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFORX_RESET, 0);
+
+ /* Configure FIFO settings */
+ /* Set Tx and Rx trigger to 1 byte */
+ reg = readl(usim->base + USIM_FIFOS);
+ reg = USIM_SETFIELD(reg, USIM_FIFOS, FIFO_TX_TRIGGER, 0);
+ reg = USIM_SETFIELD(reg, USIM_FIFOS, FIFO_RX_TRIGGER, 0);
+ reg = USIM_SETFIELD(reg, USIM_FIFOS, RXDMA_TYPE, 0x3);
+ reg = USIM_SETFIELD(reg, USIM_FIFOS, DMA_MODE, 0x0);
+ writel(reg, usim->base + USIM_FIFOS);
+
+ /* Enable FIFO access */
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFO_ENABLE, 1);
+
+ /* Use HW mode for ETU calculation and set FI = 372 and DI = 1 */
+ reg = readl(usim->base + USIM_CONF5);
+ reg = USIM_SETFIELD(reg, USIM_CONF5, FI, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF5, DI, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF5, SOFT_NHARD_FIDI_PROG, 0);
+ writel(reg, usim->base + USIM_CONF5);
+
+ /* Configure CONF6 settings */
+ reg = readl(usim->base + USIM_CONF6);
+ reg = USIM_SETFIELD(reg, USIM_CONF6, VCC_BYPASS, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF6, RST_BYPASS, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF6, SCLK0_BYPASS, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF6, RST_POLARITY, 0);
+ reg = USIM_SETFIELD(reg, USIM_CONF6, ATR_TIMER_BYPASS, 1);
+ reg = USIM_SETFIELD(reg, USIM_CONF6, MODE, USIM_CONF6_MODE_FREEZE);
+ writel(reg, usim->base + USIM_CONF6);
+
+ /* Clear all bits in IO_DIRECT register */
+ writel(0, usim->base + USIM_IO_DIRECT);
+
+ /* Disable legacy bypass mode */
+ USIM_WRITEREG(usim->base, USIM_CONF1, CONFBYPASS, 0);
+
+ /* Enable required interrupts */
+ reg = readl(usim->base + USIM_IRQENABLE);
+ writel(reg, usim->base + USIM_IRQENABLE);
+
+ /* Toggling ATR length to ensure 'USIM_STAT_ATRRX_AFTER_TIMEOUT'
+ * gets disable
+ */
+ USIM_WRITEREG(usim->base, USIM_CONF6, ATR_TIMEOUT, 1);
+ USIM_WRITEREG(usim->base, USIM_CONF6, ATR_TIMEOUT,
+ USIM_ATR_TIMEOUT_EMV);
+
+ /* Set STOP_RX_TIMEOUT */
+ /* Set STOP_RESEND_FAILURE */
+ USIM_WRITEREG(usim->base, USIM_CONF2, STOP_RX_TIMEOUT, 1);
+ USIM_WRITEREG(usim->base, USIM_CONF2, STOP_RESEND_FAILURE, 1);
+
+ /* set smartcard clock */
+ usim_set_smartcardclock(usim, usim->slot_ctx[usim->slot].clock);
+
+ return 0;
+}
+
+static int usim_set_voltage(struct usim *usim, u32 voltage)
+{
+ int ret = 0;
+ struct sc_phy *phy = usim->phy;
+ /*
+ * voltage = 0 for 5V,
+ * voltage = 1 for 3V,
+ * voltage = 2 for 1.8V,
+ */
+ if (voltage > 3)
+ return -EINVAL;
+ if (usim->phy_present) {
+ ret = phy->set_config(phy, usim->slot,
+ SC_PHY_CARD_SUPPLY_VOLTAGE, voltage);
+ }
+ usim->slot_ctx[usim->slot].supply = voltage;
+ return ret;
+}
+
+static int usim_set_smartcardclock(struct usim *usim, u32 clock)
+{
+ int clkdiv;
+ int clkmode;
+ struct sc_phy *phy = usim->phy;
+
+ switch (clock) {
+ case USIM_SMARTCART_CLOCK_3_3MHZ:
+ clkmode = USIM_CONFSCLKMODE_HF;
+ clkdiv = 3;
+ break;
+
+ case USIM_SMARTCART_CLOCK_4MHZ:
+ clkmode = USIM_CONFSCLKMODE_HF;
+ clkdiv = 2;
+ break;
+
+ case USIM_SMARTCART_CLOCK_5MHZ:
+ clkmode = USIM_CONFSCLKMODE_LEGACY;
+ clkdiv = 3;
+ break;
+
+ case USIM_SMARTCART_CLOCK_6_6MHZ:
+ clkmode = USIM_CONFSCLKMODE_LEGACY;
+ clkdiv = 2;
+ break;
+
+ case USIM_SMARTCART_CLOCK_10MHZ:
+ clkmode = USIM_CONFSCLKMODE_LEGACY;
+ clkdiv = 1;
+ break;
+
+ case USIM_SMARTCART_CLOCK_20MHZ:
+ clkmode = USIM_CONFSCLKMODE_LEGACY;
+ clkdiv = 0;
+ break;
+
+ default:
+ dev_err(usim->dev, "Unsupported Clock configuration for smartcard\n");
+ return -EINVAL;
+ break;
+ }
+
+ USIM_WRITEREG(usim->base, USIM_CONF2, CONFSCLKMODE, clkmode);
+ USIM_WRITEREG(usim->base, USIM_CONF2, CONFSCLKDIV, clkdiv);
+
+ /* setting phy division to zero, as USIM samples smartcard clk line and
+ * put the data in USIM fifo. Phy supply the clock to smartcard wihtout
+ * furhter division
+ */
+ if (usim->phy_present)
+ phy->set_config(phy, usim->slot, SC_PHY_CLKDIV, 0);
+
+ usim->slot_ctx[usim->slot].clock = clock;
+ return 0;
+}
+
+static int usim_set_etu(struct usim *usim, u32 fi, u32 di)
+{
+ USIM_WRITEREG(usim->base, USIM_CONF5, SOFT_NHARD_FIDI_PROG, 0);
+ USIM_WRITEREG(usim->base, USIM_CONF5, FI, fi);
+ USIM_WRITEREG(usim->base, USIM_CONF5, DI, di);
+ return 0;
+}
+
+static int usim_set_rxparitycount(struct usim *usim, u32 rxcount)
+{
+ if (rxcount > USIM_MAX_PARITY_RETRIES)
+ return -EINVAL;
+
+ /* Program fields required for RX retry in USIM IP */
+ USIM_WRITEREG(usim->base, USIM_CONF2, PAR_ERR_LEVEL, rxcount);
+
+ /* Enable rx parity check */
+ if (rxcount > 0) {
+ USIM_WRITEREG(usim->base, USIM_CONF2, CONFCHKPAR, 1);
+ usim_irq_enable(usim->base, USIM_IRQ_PAR_ERR_LEVEL_REACHED);
+ } else {
+ usim_irq_disable(usim->base, USIM_IRQ_PAR_ERR_LEVEL_REACHED);
+ }
+ return 0;
+}
+
+static int usim_set_txretrycount(struct usim *usim, u32 txcount)
+{
+ if (txcount > USIM_MAX_PARITY_RETRIES)
+ return -EINVAL;
+
+ USIM_WRITEREG(usim->base, USIM_CONF2, CONFRESENT, txcount);
+ if (txcount > 0)
+ usim_irq_enable(usim->base, USIM_IRQ_RESENT);
+ else
+ usim_irq_disable(usim->base, USIM_IRQ_RESENT);
+
+ return 0;
+}
+
+static int usim_set_c4(struct usim *usim, int state)
+{
+ int ret = 0;
+ struct sc_phy *phy = usim->phy;
+ if (usim->phy_present)
+ ret = phy->set_config(phy, usim->slot, SC_PHY_PIN_C4, state);
+ else
+ USIM_WRITEREG(usim->base, USIM_IO_DIRECT, C4, state);
+ return ret;
+}
+
+static int usim_set_c8(struct usim *usim, int state)
+{
+ int ret = 0;
+ struct sc_phy *phy = usim->phy;
+
+ if (usim->phy_present)
+ ret = phy->set_config(phy, usim->slot, SC_PHY_PIN_C8, state);
+ return ret;
+}
+static int usim_get_version(struct usim *usim)
+{
+ int version = 0x0;
+
+ /* last 16 bytes represents controller version
+ * and first 16 bytes represents phy version (if connected)
+ */
+ version = USIM_READREG(usim->base, USIM_REVISION, REV);
+ if (usim->phy_present)
+ version |= ((usim->phy->get_config(usim->phy, 0,
+ SC_PHY_VERSION)) << 0x10);
+ return version;
+}
+static int usim_init_emvusercard(struct usim *usim)
+{
+ int ret = 0;
+ struct sc_phy *phy = usim->phy;
+
+ USIM_WRITEREG(usim->base, USIM_CONF1, EMV_CONF, 1);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, DMA_MODE, 0);
+
+ usim_set_etu(usim, 0, 0);
+
+ if (usim_set_txretrycount(usim, 5) != 0)
+ return -EINVAL;
+
+ if (usim_set_rxparitycount(usim, 5) != 0)
+ return -EINVAL;
+
+ usim_set_c4(usim, 0);
+ usim_set_c8(usim, 0);
+
+ if (usim->phy_present) {
+ /* Set early ATR and mute ATR in case of phy */
+ ret = phy->set_config(phy, usim->slot, SC_PHY_ATR_EARLY_TIME,
+ USIM_EMV_ATR_EARLY_TO);
+ if (ret != 0)
+ return ret;
+
+ ret = phy->set_config(phy, usim->slot, SC_PHY_ATR_MUTE_TIME,
+ USIM_EMV_ATR_MUTE_TO);
+ if (ret != 0)
+ return ret;
+
+ /* enable user slot */
+ ret = phy->set_config(phy, usim->slot, SC_PHY_IO, 1);
+ if (ret != 0)
+ return ret;
+ }
+ /* set cwt,wwt,cgt */
+ USIM_WRITEREG(usim->base, USIM_WWT, WWT, USIM_EMV_WWT);
+ USIM_WRITEREG(usim->base, USIM_CWT, CWT, USIM_EMV_WWT - 22);
+ USIM_WRITEREG(usim->base, USIM_CGT, CGT, USIM_EMV_CGT);
+
+ return 0;
+}
+
+static int usim_warmreset(struct usim *usim)
+{
+ int ret = 0;
+ struct sc_phy *phy = usim->phy;
+
+ usim->slot_ctx[usim->slot].atr_length = 0;
+ USIM_WRITEREG(usim->base, USIM_CONF6, MODE, USIM_MODE_IDLE);
+ usim->slot_ctx[usim->slot].state = USIM_MODE_IDLE;
+
+ /* reset FIFO pointer */
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFOTX_RESET, 1);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFOTX_RESET, 0);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFORX_RESET, 1);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFORX_RESET, 0);
+
+ USIM_WRITEREG(usim->base, USIM_CMD, STOP_EMV_ATR_LENGTH_TIMER, 0x1);
+ USIM_WRITEREG(usim->base, USIM_CMD, STOP_EMV_ATR_LENGTH_TIMER, 0x0);
+
+ /* Do store bytes with parity error in Rx FIFO */
+ USIM_WRITEREG(usim->base, USIM_CONF2, PUT_ERR_IN_FIFO, 0x1);
+
+ usim_irq_disable(usim->base, (USIM_IRQ_TX | USIM_IRQ_EOB));
+
+ usim->slot_ctx[usim->slot].state = USIM_MODE_ATR;
+
+ /* warm reset the card */
+ if (usim->phy_present) {
+ ret = phy->warm_reset(phy, usim->slot);
+ if (ret != 0)
+ return ret;
+ } else {
+ /* warm reset using USIM */
+ USIM_WRITEREG(usim->base, USIM_CMD, CMD_WARM_RST, 0x1);
+ }
+
+ USIM_WRITEREG(usim->base, USIM_CONF6, MODE, USIM_MODE_ATR);
+
+ return 0;
+}
+
+static int usim_activate_card(struct usim *usim)
+{
+ int ret = 0;
+ struct sc_phy *phy = usim->phy;
+
+ usim->atrdone = 0;
+ usim->slot_ctx[usim->slot].atr_length = 0;
+
+ if (usim->slot_ctx[usim->slot].emv)
+ usim_init_emvusercard(usim);
+
+ USIM_WRITEREG(usim->base, USIM_CONF1, EMV_CONF, 1);
+ USIM_WRITEREG(usim->base, USIM_CONF6, MODE, USIM_MODE_IDLE);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFOTX_RESET, 1);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFOTX_RESET, 0);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFORX_RESET, 1);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFORX_RESET, 0);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFO_RX_TRIGGER, 0x103);
+
+ /* RXDMA_TYPE = 0x1 - USIM_RXFIFO_BYTECNT value is ignored */
+ USIM_WRITEREG(usim->base, USIM_FIFOS, RXDMA_TYPE, 0x1);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFO_ENABLE, 0x1);
+
+ /* Do store bytes with parity error in Rx FIFO */
+ USIM_WRITEREG(usim->base, USIM_CONF2, PUT_ERR_IN_FIFO, 0x1);
+ usim_irq_disable(usim->base, (USIM_IRQ_TX | USIM_IRQ_EOB));
+
+ USIM_WRITEREG(usim->base, USIM_CMD, STOP_EMV_ATR_LENGTH_TIMER, 0x1);
+ USIM_WRITEREG(usim->base, USIM_CMD, STOP_EMV_ATR_LENGTH_TIMER, 0x0);
+
+ /*
+ * Toggling ATR length to ensure 'USIM_STAT_ATRRX_AFTER_TIMEOUT'
+ * gets disable. EMVCo Test case ref#1703_21/22
+ */
+ USIM_WRITEREG(usim->base, USIM_CONF6, ATR_TIMEOUT, 0x1);
+ USIM_WRITEREG(usim->base, USIM_CONF6, ATR_TIMEOUT,
+ USIM_ATR_TIMEOUT_EMV);
+ USIM_WRITEREG(usim->base, USIM_CMD, MODULE_CLK_EN, 0x1);
+
+ usim->slot_ctx[usim->slot].state = USIM_MODE_ATR;
+
+ /* set smartcard clock */
+ usim_set_smartcardclock(usim, usim->slot_ctx[usim->slot].clock);
+
+ /* Activate card */
+ if (usim->phy_present) {
+ usim_irq_disable(usim->base, USIM_IRQ_TX|USIM_IRQ_ATR_START);
+ usim_irq_enable(usim->base, 0xFFFFFFF7);
+ usim_irq_disable(usim->base, USIM_IRQ_NATR);
+ usim_irq_enable(usim->base, USIM_IRQ_EMV_ATR_LENGTH_TIME_OUT);
+ usim_irq_disable(usim->base, USIM_IRQ_TX|USIM_IRQ_ATR_START);
+
+ /* do no bypass ATR length timer, also do not
+ * disturb the bypass setting of other param
+ */
+ USIM_WRITEREG(usim->base, USIM_CONF6, ATR_TIMER_BYPASS, 0x1);
+
+ usim_irqstatus_clear(usim->base, usim_irqstatus(usim->base));
+
+ ret = phy->activate_card(phy, usim->slot);
+ if (ret != 0)
+ return ret;
+ } else {
+ /* Activate using USIM */
+ USIM_WRITEREG(usim->base, USIM_CMD, CMDSTOP, 0x0);
+ USIM_WRITEREG(usim->base, USIM_CMD, CMDSTOP, 0x1);
+ }
+ USIM_WRITEREG(usim->base, USIM_CONF6, MODE, USIM_MODE_ATR);
+ return 0;
+}
+
+static int usim_deactivate_card(struct usim *usim)
+{
+ int ret = 0;
+ struct sc_phy *phy = usim->phy;
+
+ /* Use USIM IP for deactivation if there is no phy */
+ if (usim->phy_present == USIM_PHY_PRESENT) {
+ ret = phy->deactivate_card(phy, usim->slot);
+ if (ret != 0)
+ return ret;
+ } else {
+ USIM_WRITEREG(usim->base, USIM_CMD, CMDSTART, 0x0);
+ USIM_WRITEREG(usim->base, USIM_CMD, CMDSTOP, 1);
+ }
+
+ USIM_WRITEREG(usim->base, USIM_CONF6, MODE, USIM_MODE_IDLE);
+ USIM_WRITEREG(usim->base, USIM_TX_BLOCK, BLOCK_LENGTH, 0);
+
+ /* Toggling ATR length to ensure 'USIM_STAT_ATRRX_AFTER_TIMEOUT'
+ * gets disable TC Ref: 1703_21/22
+ */
+ USIM_WRITEREG(usim->base, USIM_CONF6, ATR_TIMEOUT, 1);
+ USIM_WRITEREG(usim->base, USIM_CONF6, ATR_TIMEOUT,
+ USIM_ATR_TIMEOUT_EMV);
+
+ /* stop ATR length timeout */
+ USIM_WRITEREG(usim->base, USIM_CMD, STOP_EMV_ATR_LENGTH_TIMER, 1);
+ usim->slot_ctx[usim->slot].state = USIM_MODE_DEACT;
+
+ return 0;
+}
+
+static void usim_set_protocol(struct usim *usim, int protocol)
+{
+ u32 irq;
+
+ /* As per spec, mask all interrupts before switching
+ * from one protocol to other.
+ */
+ usim_irq_get(usim->base, &irq);
+
+ /* disable all interrupts */
+ usim_irq_disable(usim->base, 0xFFFFFFFF);
+
+ /* 0 for T=0 and 1 for T=1 protocol */
+ USIM_WRITEREG(usim->base, USIM_CONF2, CONFPROTOCOL, protocol);
+ usim->slot_ctx[usim->slot].protocol = protocol;
+
+ /* read and clear status */
+ usim_irqstatus_clear(usim->base, usim_irqstatus(usim->base));
+
+ /* now renable interrupts */
+ usim_irq_enable(usim->base, irq);
+ return;
+}
+
+static void usim_configure_rx_pio(struct usim *usim)
+{
+ /* Reset RX FIFO pointers */
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFORX_RESET, 1);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFORX_RESET, 0);
+
+ /* read and clear any pending interrupt status */
+ usim_irqstatus_clear(usim->base, usim_irqstatus(usim->base));
+
+ /* Enable WWT underflow interupt,
+ * RX FIFO full interrupt,
+ * BWT, CWT and parity error level interrupts.
+ */
+ usim_irq_enable(usim->base, USIM_IRQ_WT | USIM_IRQ_RXFULL |
+ USIM_IRQ_TOB |
+ USIM_IRQ_TOC |
+ USIM_IRQ_PAR_ERR_LEVEL_REACHED);
+
+ /* Lets disable key RX interrupts. We will enable them later
+ * when we want to start RX
+ */
+ usim_irq_disable(usim->base, USIM_IRQ_RX |
+ USIM_IRQ_RXDMA_RDY | USIM_IRQ_EOB);
+
+ /* We will use only RX FIFO threshold in RX */
+ USIM_WRITEREG(usim->base, USIM_FIFOS, RXDMA_TYPE, 0x1);
+
+ if (usim->slot_ctx[usim->slot].protocol == 0) {
+ /* Set Rx FIFO Threshold to expected recv length
+ * Subtract 1 from length as HW adds 1 to the trigger
+ */
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFO_RX_TRIGGER,
+ usim->slot_ctx[usim->slot].rx_explen - 1);
+ } else {
+ /* T=1 protocol */
+ /* for T1 we should not use parity error level interrupt */
+ usim_irq_disable(usim->base, USIM_IRQ_PAR_ERR_LEVEL_REACHED);
+
+ /* set RX FIFO threshold to MAX_RX_FIFO size.
+ * We will rely on End-Of-Block interrupt to
+ * terminate reception in T1
+ */
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFO_RX_TRIGGER,
+ USIM_MAX_RX_FIFO_SIZE - 1);
+ }
+ return;
+}
+
+static void usim_configure_tx_pio(struct usim *usim)
+{
+ /* Make sure TX is stopped first by programming
+ * TX_BLOCK to zero and disabling TX_BLOCK_DONE
+ * and USIM_IRQ_TX_BLOCK_REQ interrupts
+ */
+ USIM_WRITEREG(usim->base, USIM_TX_BLOCK, BLOCK_LENGTH, 0);
+ usim_irq_disable(usim->base, USIM_IRQ_TX_BLOCK_DONE |
+ USIM_IRQ_TX_BLOCK_REQ);
+
+ /* We will use Tx Block length feature so clear TX_EN bit */
+ USIM_WRITEREG(usim->base, USIM_CONF2, TX_EN, 0);
+ /* We will not use USIM_TX interrupt for transmit operation */
+ usim_irq_disable(usim->base, USIM_IRQ_TX);
+ /* Reset TX FIFO pointers */
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFOTX_RESET, 1);
+ USIM_WRITEREG(usim->base, USIM_FIFOS, FIFOTX_RESET, 0);
+
+ /* Ensure PIO mode is programmed */
+ USIM_WRITEREG(usim->base, USIM_FIFOS, DMA_MODE, 0);
+}
+
+static int usim_send_data(struct usim *usim, char *txbuf, int len)
+{
+ u32 val;
+ int i;
+ int ret = 0;
+
+ usim->txdone = 0;
+ usim->rxdone = 0;
+
+ if (len == 0) {
+ dev_dbg(usim->dev, "Error: Invalid Tx length:%d", len);
+ return -EINVAL;
+ }
+
+ usim->slot_ctx[usim->slot].event = 0;
+
+ /* Configure Tx PIO mode patams */
+ usim_configure_tx_pio(usim);
+
+ /* Tx FIFO must be empty after reset */
+ val = USIM_READREG(usim->base, USIM_FIFOS, FIFOTX_EMPTY);
+ if (val == 0) {
+ dev_dbg(usim->dev, "Error: Tx FIFO is not empty");
+ return -EFAULT;
+ }
+
+ /* write data in Tx FIFO */
+ for (i = 0; i < len; i++) {
+ USIM_WRITEREG(usim->base, USIM_DTX, DTX, txbuf[i]);
+ dev_dbg(usim->dev, "txbyte %d = %x\n", i, txbuf[i]);
+ }
+
+ /* Finally re-enable TX_BLOCK_xxx interrupts and clear RX interrupts */
+ usim_irq_enable(usim->base, USIM_IRQ_TX_BLOCK_DONE |
+ USIM_IRQ_TX_BLOCK_REQ);
+
+ /* For T=0, stop re-tranmission after resend failure */
+ if (usim->slot_ctx[usim->slot].protocol == 0) {
+ USIM_WRITEREG(usim->base, USIM_CONF2, STOP_RESEND_FAILURE, 0);
+ USIM_WRITEREG(usim->base, USIM_CONF2, STOP_RESEND_FAILURE, 1);
+ }
+
+ /* Do not store bytes with parity error in Rx FIFO */
+ USIM_WRITEREG(usim->base, USIM_CONF2, PUT_ERR_IN_FIFO, 0);
+
+ usim_irq_enable(usim->base, USIM_IRQ_TOC);
+
+ if (usim->phy_present)
+ USIM_WRITEREG(usim->base, USIM_CONF6, MODE, USIM_MODE_TXRX);
+ else
+ USIM_WRITEREG(usim->base, USIM_CONF6, MODE, USIM_MODE_LEGACY);
+
+ usim->slot_ctx[usim->slot].state = USIM_MODE_TXRX;
+
+ /* Configure Rx settings before performing a Tx
+ * As soon as we are done with Tx, card will send
+ * data, which we should be ready to capture
+ */
+ usim_configure_rx_pio(usim);
+ /* Start TX operation - program TX_BLOCK register to length
+ * of the TX buffer to start the TX operation.
+ */
+ USIM_WRITEREG(usim->base, USIM_TX_BLOCK, BLOCK_LENGTH, len);
+
+ /* We need to block the caller here */
+ ret = wait_event_interruptible(tx_wait, (usim->txdone == 1));
+ dev_dbg(usim->dev, "Tx WAIT OVER\n");
+ if (usim->slot_ctx[usim->slot].event == USIM_EVENT_TIMEOUT)
+ usim_send_signal(usim, USIM_EVENT_TIMEOUT);
+
+ return ret;
+}
+
+static int usim_set_config(struct usim *usim, struct usim_config *param)
+{
+ u32 ret = 0;
+ dev_dbg(usim->dev, "param:%d, value:%d\n", param->attr, param->value);
+
+ switch (param->attr) {
+ case USIM_PARAM_CWT:
+ USIM_WRITEREG(usim->base, USIM_CWT, CWT, param->value);
+ break;
+
+ case USIM_PARAM_WWT:
+ USIM_WRITEREG(usim->base, USIM_WWT, WWT, param->value);
+ break;
+
+ case USIM_PARAM_CGT:
+ USIM_WRITEREG(usim->base, USIM_CGT, CGT, param->value);
+ break;
+
+ case USIM_PARAM_BWT:
+ USIM_WRITEREG(usim->base, USIM_BWT, BWT, param->value);
+ break;
+
+ case USIM_PARAM_EDCTYPE:
+ /* 0 = LRC check, 1 = CRC check */
+ USIM_WRITEREG(usim->base, USIM_CONF2, CONFEDC, param->value);
+ break;
+
+ case USIM_PARAM_LRCCHECK:
+ /* 0 = No LRC check, 1 = LRC check */
+ USIM_WRITEREG(usim->base, USIM_CONF2, CONFLRCCHECK,
+ param->value);
+ break;
+
+ case USIM_PARAM_C4:
+ usim_set_c4(usim, param->value);
+ break;
+
+ case USIM_PARAM_C8:
+ usim_set_c8(usim, param->value);
+ break;
+
+ case USIM_PARAM_PROTOCOL:
+ /* 0 for T=0 and 1 for T=1 */
+ usim_set_protocol(usim, param->value);
+ break;
+
+ case USIM_PARAM_VOLTAGE:
+ ret = usim_set_voltage(usim, param->value);
+ break;
+
+ case USIM_PARAM_EMV:
+ USIM_WRITEREG(usim->base, USIM_CONF1, EMV_CONF, param->value);
+ if (param->value)
+ usim->slot_ctx[usim->slot].emv = true;
+ else
+ usim->slot_ctx[usim->slot].emv = false;
+ break;
+
+ case USIM_PARAM_FI:
+ USIM_WRITEREG(usim->base, USIM_CONF5, SOFT_NHARD_FIDI_PROG, 0);
+ USIM_WRITEREG(usim->base, USIM_CONF5, FI, param->value);
+ break;
+
+ case USIM_PARAM_DI:
+ USIM_WRITEREG(usim->base, USIM_CONF5, SOFT_NHARD_FIDI_PROG, 0);
+ USIM_WRITEREG(usim->base, USIM_CONF5, DI, param->value);
+ break;
+
+ case USIM_PARAM_CODING_CONV:
+ USIM_WRITEREG(usim->base, USIM_STAT, CONFCODCONV, param->value);
+ break;
+
+ case USIM_PARAM_CLOCK_STOP:
+ USIM_WRITEREG(usim->base, USIM_CMD, CMD_CLOCK_STOP,
+ param->value);
+ break;
+
+ case USIM_PARAM_SMARTCARD_CLOCK:
+ ret = usim_set_smartcardclock(usim, param->value);
+ break;
+
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int usim_get_config(struct usim *usim, struct usim_config *param)
+{
+ u32 ret = 0;
+ dev_dbg(usim->dev, "param:%d, value:%d\n", param->attr, param->value);
+
+ switch (param->attr) {
+ case USIM_PARAM_CWT:
+ param->value = USIM_READREG(usim->base, USIM_CWT, CWT);
+ break;
+
+ case USIM_PARAM_WWT:
+ param->value = USIM_READREG(usim->base, USIM_WWT, WWT);
+ break;
+
+ case USIM_PARAM_CGT:
+ param->value = USIM_READREG(usim->base, USIM_CGT, CGT);
+ break;
+
+ case USIM_PARAM_BWT:
+ param->value = USIM_READREG(usim->base, USIM_BWT, BWT);
+ break;
+
+ case USIM_PARAM_EDCTYPE:
+ param->value = USIM_READREG(usim->base, USIM_CONF2, CONFEDC);
+ break;
+
+ case USIM_PARAM_LRCCHECK:
+ param->value = USIM_READREG(usim->base, USIM_CONF2,
+ CONFLRCCHECK);
+ break;
+
+ case USIM_PARAM_PROTOCOL:
+ /* 0 for T=0 and 1 for T=1 */
+ param->value = USIM_READREG(usim->base, USIM_CONF2,
+ CONFPROTOCOL);
+ break;
+
+ case USIM_PARAM_VOLTAGE:
+ param->value = usim->slot_ctx[usim->slot].supply;
+ break;
+
+ case USIM_PARAM_EMV:
+ param->value = USIM_READREG(usim->base, USIM_CONF1, EMV_CONF);
+ break;
+
+ case USIM_PARAM_FI:
+ param->value = USIM_READREG(usim->base, USIM_CONF5, FI);
+ break;
+
+ case USIM_PARAM_DI:
+ param->value = USIM_READREG(usim->base, USIM_CONF5, DI);
+ break;
+
+ case USIM_PARAM_CODING_CONV:
+ param->value = USIM_READREG(usim->base, USIM_STAT, CONFCODCONV);
+ break;
+
+ case USIM_PARAM_CLOCK_STOP:
+ param->value = USIM_READREG(usim->base, USIM_CMD,
+ CMD_CLOCK_STOP);
+ break;
+
+ case USIM_PARAM_SMARTCARD_CLOCK:
+ param->value = usim->slot_ctx[usim->slot].clock;
+ break;
+
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static long usim_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct usim *usim = file->private_data;
+ struct usim_data data;
+ struct usim_config param;
+
+ int ret = 0;
+ int cnt = 0;
+ int version = 0;
+ int u_pid = 0;
+ int present = 0;
+
+ if (usim->phy_present == USIM_PHY_NOT_ATTACHED)
+ return -ENXIO;
+
+ switch (cmd) {
+ case USIM_IOCTL_GET_PROVIDER_VERSION:
+ dev_dbg(usim->dev, "IOCTL: GET PROVIDER VERSION\n");
+ version = usim_get_version(usim);
+ ret = copy_to_user((unsigned int *)arg, &version,
+ sizeof(unsigned int));
+ if (ret != 0)
+ ret = -EFAULT;
+ break;
+
+ case USIM_IOCTL_ACTIVATE_CARD:
+ dev_dbg(usim->dev, "IOCTL: ACTIVATE CARD\n");
+ if (usim->phy_present) {
+ present = usim->phy->get_config(usim->phy, usim->slot,
+ SC_PHY_CARD_PRESENCE);
+ if (present)
+ ret = usim_activate_card(usim);
+ else
+ ret = -EFAULT;
+ }
+ break;
+
+ case USIM_IOCTL_DEACTIVATE_CARD:
+ dev_dbg(usim->dev, "IOCTL: DEACTIVATE CARD\n");
+ ret = usim_deactivate_card(usim);
+ break;
+
+ case USIM_IOCTL_WARM_RESET:
+ dev_dbg(usim->dev, "IOCTL: WARM RESET\n");
+ ret = usim_warmreset(usim);
+ break;
+
+ case USIM_IOCTL_GET_ATR:
+ dev_dbg(usim->dev, "IOCTL: GET ATR\n");
+ wait_event_interruptible(atr_wait, (usim->atrdone == 1));
+ ret = copy_to_user((char __user *)arg,
+ usim->slot_ctx[usim->slot].atr,
+ usim->slot_ctx[usim->slot].atr_length);
+ if (ret != 0)
+ ret = -EFAULT;
+ else
+ ret = usim->slot_ctx[usim->slot].atr_length;
+ break;
+
+ case USIM_IOCTL_SEND_DATA:
+ dev_dbg(usim->dev, "IOCTL: SEND DATA\n");
+ ret = copy_from_user(&data, (struct usim_data *)arg,
+ sizeof(struct usim_data));
+ if (ret != 0)
+ return -EFAULT;
+
+ usim->slot = data.slot;
+ usim->slot_ctx[usim->slot].rx_explen = data.rxexplen;
+ usim->slot_ctx[usim->slot].rx_counter = 0;
+ for (cnt = 0; cnt < data.txlen; cnt++)
+ dev_dbg(usim->dev, "apdu[%d] = %x\n", cnt,
+ data.apdu[cnt]);
+ ret = usim_send_data(usim, &data.apdu[0], data.txlen);
+ break;
+
+ case USIM_IOCTL_SET_CONFIG:
+ dev_dbg(usim->dev, "IOCTL: SET CONFIG\n");
+ ret = copy_from_user(¶m, (struct usim_config *)arg,
+ sizeof(struct usim_config));
+ if (ret != 0)
+ return -EFAULT;
+
+ usim_set_config(usim, ¶m);
+ break;
+
+ case USIM_IOCTL_GET_CONFIG:
+ dev_dbg(usim->dev, "IOCTL: GET CONFIG\n");
+ ret = copy_from_user(¶m, (struct usim_config *)arg,
+ sizeof(struct usim_config));
+ if (ret != 0)
+ return -EFAULT;
+
+ usim_get_config(usim, ¶m);
+ ret = copy_to_user((struct usim_config *)arg, ¶m,
+ sizeof(struct usim_config));
+ if (ret != 0)
+ ret = -EFAULT;
+ break;
+
+ case USIM_IOCTL_GET_CARD_PRESENCE:
+ dev_dbg(usim->dev, "IOCTL: CARD PRESENCE\n");
+ if (usim->phy_present) {
+ present = usim->phy->get_config(usim->phy, usim->slot,
+ SC_PHY_CARD_PRESENCE);
+ ret = copy_to_user((unsigned int *)arg, &present,
+ sizeof(unsigned int));
+ if (ret != 0)
+ ret = -EFAULT;
+ }
+ break;
+
+ case USIM_IOCTL_REGISTER_PID:
+ dev_dbg(usim->dev, "IOCTL: USIM_IOCTL_REGISTER_PID");
+ ret = copy_from_user(&u_pid, (int *)arg, sizeof(int));
+ if (ret != 0)
+ return -EFAULT;
+ usim->user_pid = u_pid;
+ break;
+ }
+ return ret;
+}
+
+static ssize_t usim_read(struct file *file, char *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct usim *usim = file->private_data;
+ if (usim->phy_present == USIM_PHY_NOT_ATTACHED)
+ return -ENXIO;
+
+ wait_event_interruptible(rx_wait, (usim->rxdone == 1));
+ dev_dbg(usim->dev, "RX WAIT over\n");
+
+ /* check for timeout and send signal if any */
+ if (usim->slot_ctx[usim->slot].event == USIM_EVENT_TIMEOUT)
+ usim_send_signal(usim, USIM_EVENT_TIMEOUT);
+
+ if (copy_to_user(user_buf, usim->slot_ctx[usim->slot].rxbuf,
+ usim->slot_ctx[usim->slot].rx_counter)) {
+ dev_err(usim->dev, "Copy failed\n");
+ return -EFAULT;
+ }
+ *ppos = usim->slot_ctx[usim->slot].rx_counter;
+ dev_dbg(usim->dev, "Card response returning %d bytes\n",
+ usim->slot_ctx[usim->slot].rx_counter);
+
+ return usim->slot_ctx[usim->slot].rx_counter;
+}
+
+#ifdef CONFIG_DEBUG_FS
+
+#define DUMP_REG(r) seq_printf(s, "%-25s: %08x\n", #r, readl(usim->base + r));
+
+static int usim_regdump_show(struct seq_file *s, void *unused)
+{
+ struct usim *usim = s->private;
+
+ seq_puts(s, "USIM Register Dump\n");
+
+ DUMP_REG(USIM_REVISION);
+ DUMP_REG(USIM_IDENT);
+ DUMP_REG(USIM_SYSCONFIG);
+ DUMP_REG(USIM_SYSSTATUS);
+ DUMP_REG(USIM_IRQSTATUS);
+ DUMP_REG(USIM_IRQENABLE);
+ DUMP_REG(USIM_WAKEUPEN);
+ DUMP_REG(USIM_CMD);
+ DUMP_REG(USIM_STAT);
+ DUMP_REG(USIM_CONF1);
+ DUMP_REG(USIM_CONF2);
+ DUMP_REG(USIM_CONF3);
+ DUMP_REG(USIM_DRX);
+ DUMP_REG(USIM_DTX);
+ DUMP_REG(USIM_FIFOS);
+ DUMP_REG(USIM_CGT);
+ DUMP_REG(USIM_BWT);
+ DUMP_REG(USIM_DEBUG);
+ DUMP_REG(USIM_CONF_SAM1_DIV);
+ DUMP_REG(USIM_CONF4);
+ DUMP_REG(USIM_ATR_CLK_PRD_NBS);
+ DUMP_REG(USIM_CONF_ETU_DIV);
+ DUMP_REG(USIM_CONF5);
+ DUMP_REG(USIM_TC_GUARD_TIME_ADD);
+ DUMP_REG(USIM_RXFIFO_LEVEL);
+ DUMP_REG(USIM_RXFIFO_BYTECNT);
+ DUMP_REG(USIM_WWT);
+ DUMP_REG(USIM_CONF6);
+ DUMP_REG(USIM_IO_DIRECT);
+ DUMP_REG(USIM_TX_BLOCK);
+
+ return 0;
+}
+
+static int usim_regdump_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, usim_regdump_show, inode->i_private);
+}
+
+static const struct file_operations usim_regdump_fops = {
+ .open = usim_regdump_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int usim_init_debugfs(struct usim *usim)
+{
+ int ret;
+ struct dentry *root;
+ struct dentry *file;
+
+ root = debugfs_create_dir("usim", NULL);
+ if (!root) {
+ ret = -ENOMEM;
+ goto err0;
+ }
+
+ file = debugfs_create_file("regdump", S_IRUGO, root, usim,
+ &usim_regdump_fops);
+ if (!file) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ usim->debugfs_root = root;
+
+ return 0;
+err1:
+ debugfs_remove_recursive(root);
+err0:
+ return ret;
+}
+#endif
+
+static int usim_pm_init(struct usim *usim)
+{
+ int ret = 0;
+
+ usim->usim0_fck = clk_get(usim->dev, "usim0_fck");
+ if (IS_ERR(usim->usim0_fck)) {
+ ret = PTR_ERR(usim->usim0_fck);
+ dev_err(usim->dev, "usim0_fck failed error:%d\n", ret);
+ return -1;
+ }
+ usim->dpll_core_m4_ck = clk_get(usim->dev, "dpll_core_m4_ck");
+ if (IS_ERR(usim->dpll_core_m4_ck)) {
+ ret = PTR_ERR(usim->dpll_core_m4_ck);
+ dev_err(usim->dev, "dpll_core_m4_ck failed error:%d\n", ret);
+ return -1;
+ }
+ ret = clk_set_parent(usim->usim0_fck, usim->dpll_core_m4_ck);
+ if (ret != 0)
+ dev_dbg(usim->dev, "clk set parent failed: %d\n", ret);
+
+ usim->usim_dbclk = clk_get(usim->dev, "usim_dbck");
+ if (IS_ERR(usim->usim_dbclk)) {
+ ret = PTR_ERR(usim->usim_dbclk);
+ dev_err(usim->dev, "usim_dbck failed error:%d\n", ret);
+ return -1;
+ }
+
+ usim->clkdiv32k_ick = clk_get(usim->dev, "clkdiv32k_ick");
+ if (IS_ERR(usim->usim_dbclk)) {
+ ret = PTR_ERR(usim->clkdiv32k_ick);
+ dev_err(usim->dev, "clkdiv32k_ick failed error:%d\n", ret);
+ return -1;
+ }
+
+ ret = clk_set_parent(usim->usim_dbclk, usim->clkdiv32k_ick);
+ if (ret != 0)
+ dev_dbg(usim->dev, "usim_dbclk set parent failed: %d\n", ret);
+
+ usim->opt_fclk = devm_clk_get(usim->dev, "opt_fck");
+ if (IS_ERR(usim->opt_fclk))
+ dev_err(usim->dev, "unable to get fck\n");
+ else
+ clk_enable(usim->opt_fclk);
+
+ usim->opt_fclk32 = devm_clk_get(usim->dev, "opt_fck32");
+ if (IS_ERR(usim->opt_fclk32))
+ dev_err(usim->dev, "unable to get dbclk\n");
+ else
+ clk_enable(usim->opt_fclk32);
+
+ return 0;
+}
+static void usim_enable(struct usim *usim)
+{
+ if (usim->enable == 1)
+ return;
+
+ /* enable the clk */
+ pm_runtime_get_sync(usim->dev);
+
+ /* usim init */
+ usim_configure(usim);
+
+ usim->enable = 1;
+ return;
+}
+
+static void usim_disable(struct usim *usim)
+{
+ int cnt = 0;
+
+ if (usim->enable == 0)
+ return;
+
+ /* reset USIM state for deactivation */
+ for (cnt = 0; cnt < usim->max_slots; cnt++) {
+ usim->slot = cnt;
+ usim_deactivate_card(usim);
+ }
+
+ /* reset default slot and clock */
+ usim->slot = 0;
+ usim->slot_ctx[usim->slot].clock = USIM_SMARTCART_CLOCK_5MHZ;
+
+ /* shutdown phy */
+ if (usim->phy_present == USIM_PHY_PRESENT)
+ usim->phy->set_config(usim->phy, usim->slot, SC_PHY_MODE,
+ SC_PHY_SHUTDOWN);
+ /* disable clk */
+ pm_runtime_put_sync_autosuspend(usim->dev);
+ usim->enable = 0;
+ return;
+}
+
+static int usim_open(struct inode *inode, struct file *file)
+{
+ struct usim *usim = (struct usim *)dev_get_drvdata(usim_dev.parent);
+
+ if (usim->phy_present == USIM_PHY_NOT_ATTACHED)
+ return -ENXIO;
+
+ file->private_data = usim;
+ usim_enable(usim);
+ return 0;
+}
+
+static int usim_release(struct inode *inode, struct file *file)
+{
+ struct usim *usim = (struct usim *)dev_get_drvdata(usim_dev.parent);
+
+ usim_disable(usim);
+ usim->user_pid = 0;
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int usim_suspend(struct device *dev)
+{
+ /* struct usim *usim = dev_to_usim(dev); */
+ return 0;
+}
+
+static int usim_resume(struct device *dev)
+{
+ /* struct usim *usim = dev_to_usim(dev); */
+ return 0;
+}
+
+static const struct dev_pm_ops usim_pm_ops = {
+ .suspend = usim_suspend,
+ .resume = usim_resume,
+};
+
+#define USIM_PM_OPS (&usim_pm_ops)
+#else
+#define USIM_PM_OPS NULL
+#endif
+
+static int usim_notify(struct notifier_block *self, unsigned long action, void
+ *data)
+{
+ struct usim *usim = (struct usim *)data;
+ int event = action & SC_PHY_NOTIFICATION_ACTION_MASK;
+ int slot = (action & SC_PHY_NOTIFICATION_SLOT_MASK) >>
+ SC_PHY_NOTIFICATION_SLOT_SHIFT;
+ int t_slot = 0;
+
+ /* if phy is removed using rmmod or by some other mech..
+ * then put phy state in unknown, at this point usim also required to
+ * gets removed from the system, if it is inserted as module and
+ * dependent on phy
+ */
+ if (action == SC_PHY_REMOVED)
+ usim->phy_present = USIM_PHY_NOT_ATTACHED;
+
+ if (event & SC_PHY_CARD_INSERTED)
+ usim_send_signal(usim, USIM_EVENT_CARD_INSERT);
+
+ if (action & SC_PHY_CARD_REMOVED) {
+ usim_send_signal(usim, USIM_EVENT_CARD_REMOVE);
+ dev_dbg(usim->dev, "slot is:%d", slot);
+ /* de-activate USIM & PHY state machine for the slot */
+ t_slot = usim->slot;
+ usim->slot = slot;
+ usim_deactivate_card(usim);
+ usim->slot = t_slot;
+ }
+
+ if (action & SC_PHY_CARD_OVERHEAT)
+ usim_send_signal(usim, USIM_EVENT_CARD_OVERHEAT);
+
+ if (action & SC_PHY_CARD_ATR_TIMEOUT)
+ usim_send_signal(usim, USIM_EVENT_TIMEOUT);
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block usim_nb = {
+ .notifier_call = usim_notify,
+};
+
+static const struct file_operations usim_fops = {
+ .owner = THIS_MODULE,
+ .read = usim_read,
+ .open = usim_open,
+ .unlocked_ioctl = usim_ioctl,
+ .release = usim_release,
+};
+
+static int usim_probe(struct platform_device *pdev)
+{
+ struct device_node *node = pdev->dev.of_node;
+ struct device *dev = &pdev->dev;
+
+ struct usim *usim = NULL;
+ struct device_node *phy_node = NULL;
+ struct resource *res = NULL;
+ void __iomem *base = NULL;
+ const __be32 *parp = NULL;
+ struct i2c_client *phy_i2c = NULL;
+
+ int ret = 0;
+ int version = 0;
+ int cnt = 0;
+ u32 prop = 0;
+ int lenp = 0;
+
+ if (!node) {
+ dev_err(dev, "device node not found\n");
+ return -EINVAL;
+ }
+
+ usim = devm_kzalloc(dev, sizeof(*usim), GFP_KERNEL);
+ if (!usim) {
+ dev_err(dev, "not enough memory\n");
+ return -ENOMEM;
+ }
+
+ usim->irq = platform_get_irq(pdev, 0);
+ if (usim->irq < 0) {
+ dev_err(dev, "missing IRQ resource\n");
+ ret = -EINVAL;
+ goto usim_err_ret;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(dev, "missing memory base resource\n");
+ ret = -EINVAL;
+ goto usim_err_ret;
+ }
+
+ base = devm_ioremap_nocache(dev, res->start, resource_size(res));
+ if (!base) {
+ dev_err(dev, "ioremap failed\n");
+ ret = -ENOMEM;
+ goto usim_err_ret;
+ }
+
+ usim->dev = &pdev->dev;
+ usim->base = base;
+ usim->max_slots = 1;
+ usim->phy_present = USIM_PHY_NOT_PRESENT;
+ usim->enable = 0;
+
+ /* default slot will be zero : user card */
+ usim->slot = 0;
+
+ ret = devm_request_irq(dev, usim->irq, usim_interrupt, 0,
+ "usim", usim);
+ if (ret) {
+ dev_err(dev, "fail request IRQ #%d --> %d\n", usim->irq, ret);
+ goto usim_err_ret;
+ return ret;
+ }
+
+ /*
+ * Populate all the child nodes here...
+ */
+ ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
+
+ /* get phy details */
+ parp = of_get_property(node, "phy", &lenp);
+ if (parp == NULL || lenp != (sizeof(void *))) {
+ dev_dbg(usim->dev, "parp is null!,no phy");
+ } else {
+ /* get phy node */
+ phy_node = of_find_node_by_phandle(be32_to_cpup(parp));
+ if (phy_node == NULL) {
+ dev_err(usim->dev, "\n phy node is null");
+ ret = -EPROBE_DEFER;
+ goto usim_err_ret;
+ }
+ phy_i2c = of_find_i2c_device_by_node(phy_node);
+ if (phy_i2c == NULL) {
+ dev_err(usim->dev, "\n phy i2c is null");
+ ret = -EPROBE_DEFER;
+ goto usim_err_ret;
+ }
+ /* get phy interface */
+ usim->phy = (struct sc_phy *)i2c_get_clientdata(phy_i2c);
+ if (usim->phy == NULL) {
+ dev_err(usim->dev, "phy data is null");
+ ret = -EPROBE_DEFER;
+ goto usim_err_ret;
+ }
+ usim->phy_present = USIM_PHY_PRESENT;
+
+ ret = of_property_read_u32(node, "phy-slots", &prop);
+ /* if phy-slot is not declared then assume one phy slot */
+ usim->max_slots = prop > 0 ? prop : 1;
+ }
+
+ dev_dbg(usim->dev, "usim max slot:%d", usim->max_slots);
+ /* initialize slot context*/
+ if (usim->max_slots > USIM_MAX_SLOTS) {
+ ret = -EINVAL;
+ goto usim_err_ret;
+ }
+
+ usim->slot_ctx = kmalloc(usim->max_slots *
+ sizeof(struct usim_slotcontext), GFP_KERNEL);
+ if (!usim->slot_ctx)
+ return -ENOMEM;
+
+ for (cnt = 0; cnt < usim->max_slots; cnt++) {
+ /* default protocol */
+ usim->slot_ctx[cnt].protocol = 0;
+ usim->slot_ctx[cnt].emv = true;
+ }
+
+ dev_set_drvdata(dev, usim);
+ usim_pm_init(usim);
+
+ /* enable the clock */
+ pm_runtime_enable(usim->dev);
+ pm_runtime_set_active(usim->dev);
+ spin_lock_init(&usim->lock);
+
+ usim_dev.minor = MISC_DYNAMIC_MINOR;
+ usim_dev.name = "usim";
+ usim_dev.fops = &usim_fops;
+ usim_dev.parent = &(pdev->dev);
+
+ ret = misc_register(&usim_dev);
+ if (ret) {
+ pr_err("unable to register a misc device\n");
+ goto usim_err_reg;
+ }
+#ifdef CONFIG_DEBUG_FS
+ ret = usim_init_debugfs(usim);
+ if (ret) {
+ dev_err(dev, "Debugfs init failed\n");
+ goto usim_err_reg;
+ }
+#endif
+ /* set default ICC clock : 5Mhz */
+ usim->slot_ctx[usim->slot].clock = USIM_SMARTCART_CLOCK_5MHZ;
+
+ /* get the clock & do usim configuration */
+ usim_enable(usim);
+ dev_info(usim->dev, "usim driver initialized\n");
+
+ /* register notifier */
+ if (usim->phy_present)
+ usim->phy->register_notify(usim->phy, &usim_nb, (void *)usim);
+
+ /* get usim version */
+ version = usim_get_version(usim);
+ dev_info(usim->dev, "version is:%0x", version);
+
+ usim_disable(usim);
+ return 0;
+
+usim_err_reg:
+ pm_runtime_set_suspended(usim->dev);
+ pm_runtime_disable(usim->dev);
+ misc_deregister(&usim_dev);
+
+usim_err_ret:
+ if (usim)
+ kfree(usim->slot_ctx);
+ return ret;
+}
+
+static int usim_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct usim *usim = dev_to_usim(dev);
+
+ usim_disable(usim);
+ /* unregister notifier, applicable only when phy present and phy state
+ * is not unknown i.e. - phy has not been removed using rmmod */
+ if (usim->phy_present == USIM_PHY_PRESENT)
+ usim->phy->unregister_notify(usim->phy, &usim_nb);
+
+#ifdef CONFIG_DEBUG_FS
+ debugfs_remove_recursive(usim->debugfs_root);
+#endif
+ /* disable pm runtime */
+ pm_runtime_set_suspended(usim->dev);
+ pm_runtime_disable(usim->dev);
+
+ kfree(usim->slot_ctx);
+ misc_deregister(&usim_dev);
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id usim_id_table[] = {
+ { .compatible = "ti,usim" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, usim_id_table);
+#endif
+
+static struct platform_driver usim_driver = {
+ .driver = {
+ .name = "usim",
+ .owner = THIS_MODULE,
+ .pm = USIM_PM_OPS,
+ .of_match_table = of_match_ptr(usim_id_table),
+ },
+ .probe = usim_probe,
+ .remove = usim_remove,
+};
+
+static int __init usim_init(void)
+{
+ return platform_driver_register(&usim_driver);
+}
+
+static void __exit usim_exit(void)
+{
+ platform_driver_unregister(&usim_driver);
+}
+
+late_initcall(usim_init);
+module_exit(usim_exit);
+
+MODULE_AUTHOR("Maulik Mankad <maulik@ti.com>");
+MODULE_DESCRIPTION("USIM Driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/ti-usim.h b/include/linux/ti-usim.h
new file mode 100644
index 0000000..f4b3ca8
--- /dev/null
+++ b/include/linux/ti-usim.h
@@ -0,0 +1,98 @@
+/*
+ * ti-usim.h - Header file for USIM SmartCard interface
+ *
+ * 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.
+ */
+
+#ifndef __TI_USIM_H__
+#define __TI_USIM_H__
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#define USIM_IOCTL 0xFE
+
+enum usim_param {
+ USIM_PARAM_CWT = 0,
+ USIM_PARAM_WWT,
+ USIM_PARAM_CGT,
+ USIM_PARAM_BWT,
+ USIM_PARAM_EDCTYPE,
+ USIM_PARAM_LRCCHECK,
+ USIM_PARAM_C4,
+ USIM_PARAM_C8,
+ USIM_PARAM_PROTOCOL,
+ USIM_PARAM_VOLTAGE,
+ USIM_PARAM_EMV,
+ USIM_PARAM_FI,
+ USIM_PARAM_DI,
+ USIM_PARAM_CODING_CONV,
+ USIM_PARAM_CLOCK_STOP,
+ USIM_PARAM_SMARTCARD_CLOCK,
+};
+
+struct usim_data {
+ int slot;
+ int rxexplen;
+ int txlen;
+ unsigned char apdu[256];
+};
+
+struct usim_config {
+ enum usim_param attr;
+ unsigned int value;
+};
+
+#define USIM_SIGID 51
+
+#define USIM_IOCTL_GET_PROVIDER_VERSION _IOR(USIM_IOCTL, 0, int)
+#define USIM_IOCTL_ACTIVATE_CARD _IO(USIM_IOCTL, 1)
+#define USIM_IOCTL_DEACTIVATE_CARD _IO(USIM_IOCTL, 2)
+#define USIM_IOCTL_WARM_RESET _IO(USIM_IOCTL, 3)
+#define USIM_IOCTL_GET_ATR _IOR(USIM_IOCTL, 4, char *)
+#define USIM_IOCTL_SEND_DATA _IOW(USIM_IOCTL, 5, struct usim_data)
+#define USIM_IOCTL_SET_CONFIG _IOW(USIM_IOCTL, 6, struct usim_config)
+#define USIM_IOCTL_GET_CONFIG _IOW(USIM_IOCTL, 7, struct usim_config)
+#define USIM_IOCTL_GET_CARD_PRESENCE _IOR(USIM_IOCTL, 8, int)
+#define USIM_IOCTL_REGISTER_PID _IOW(USIM_IOCTL, 9, int)
+
+#define USIM_MAX_ATRLENGTH 0xFF
+#define USIM_MAX_APDU_LENGTH 0xFE
+
+enum usim_smartcard_clock {
+ USIM_SMARTCART_CLOCK_3_3MHZ = 0x1,
+ USIM_SMARTCART_CLOCK_4MHZ = 0x2,
+ USIM_SMARTCART_CLOCK_5MHZ = 0x3,
+ USIM_SMARTCART_CLOCK_6_6MHZ = 0x4,
+ USIM_SMARTCART_CLOCK_10MHZ = 0x5,
+ USIM_SMARTCART_CLOCK_20MHZ = 0x6,
+};
+
+enum usim_event {
+ USIM_EVENT_CARD_INSERT = 0x1,
+ USIM_EVENT_CARD_REMOVE = 0x2,
+ USIM_EVENT_TIMEOUT = 0x4,
+ USIM_EVENT_ERR_TXRETRY = 0x8,
+ USIM_EVENT_ERR_LRC = 0x10,
+ USIM_EVENT_ERR_PARITY = 0x20,
+ USIM_EVENT_ERR_FRAME = 0x40,
+ USIM_EVENT_PHYERR = 0x80,
+ USIM_EVENT_CARD_OVERHEAT = 0x100,
+};
+
+enum usim_card_voltage {
+ USIM_CARD_5V = 0,
+ USIM_CARD_3V,
+ USIM_CARD_1_8V
+};
+
+#endif /* __TI_USIM_H__ */
--
1.7.1
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