From: "Ying-Chun Liu (PaulLiu)" <paul....@linaro.org>
Add DA9052 mfd driver from Dialog.
Modify Kconfig/Makefile for DA9052 mfd driver.
Signed-off-by: Zhou Jingyu <jingyu.z...@freescale.com>
Acked-by: Lily Zhang <r58...@freescale.com>
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul....@linaro.org>
---
drivers/mfd/Kconfig | 37 +++
drivers/mfd/Makefile | 2 +
drivers/mfd/da9052-core.c | 536 +++++++++++++++++++++++++++++++++++++++++++++
drivers/mfd/da9052-i2c.c | 378 ++++++++++++++++++++++++++++++++
drivers/mfd/da9052-spi.c | 402 +++++++++++++++++++++++++++++++++
5 files changed, 1355 insertions(+), 0 deletions(-)
create mode 100644 drivers/mfd/da9052-core.c
create mode 100644 drivers/mfd/da9052-i2c.c
create mode 100644 drivers/mfd/da9052-spi.c
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 0f09c05..a3d0568 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -483,6 +483,43 @@ config PCF50633_GPIO
Say yes here if you want to include support GPIO for pins on
the PCF50633 chip.
+config PMIC_DIALOG
+ bool "Support Dialog Semiconductor PMIC"
+ depends on I2C=y
+ depends on SPI=y
+ select MFD_CORE
+ help
+ Support for Dialog semiconductor PMIC chips.
+ Use the options provided to support the desired PMIC's.
+choice
+ prompt "Chip Type"
+ depends on PMIC_DIALOG
+config PMIC_DA9052
+ bool "Support Dialog Semiconductor DA9052 PMIC"
+ help
+ Support for Dialog semiconductor DA9052 PMIC with inbuilt
+ SPI & I2C connectivities.
+ This driver provides common support for accessing the device,
+ additional drivers must be enabled in order to use the
+ functionality of the device.
+config PMIC_DA9053AA
+ bool "Support Dialog Semiconductor DA9053 AA PMIC"
+ help
+ Support for Dialog semiconductor DA9053 AA PMIC with inbuilt
+ SPI & I2C connectivities.
+ This driver provides common support for accessing the device,
+ additional drivers must be enabled in order to use the
+ functionality of the device.
+config PMIC_DA9053Bx
+ bool "Support Dialog Semiconductor DA9053 BA/BB PMIC"
+ help
+ Support for Dialog semiconductor DA9053 BA/BB PMIC with inbuilt
+ SPI & I2C connectivities.
+ This driver provides common support for accessing the device,
+ additional drivers must be enabled in order to use the
+ functionality of the device.
+endchoice
+
config MFD_MC13783
tristate
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index efe3cc3..d30b69c 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -94,3 +94,5 @@ obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o
obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o
obj-$(CONFIG_MFD_PM8XXX_IRQ) += pm8xxx-irq.o
obj-$(CONFIG_MFD_TPS65910) += tps65910.o tps65910-irq.o
+da9052-objs := da9052-spi.o da9052-i2c.o da9052-core.o
+obj-$(CONFIG_PMIC_DIALOG) += da9052.o
diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c
new file mode 100644
index 0000000..002cf50
--- /dev/null
+++ b/drivers/mfd/da9052-core.c
@@ -0,0 +1,536 @@
+/*
+ * da9052-core.c -- Device access for Dialog DA9052
+ *
+ * Copyright(c) 2009 Dialog Semiconductor Ltd.
+ *
+ * Author: Dialog Semiconductor Ltd <dc...@diasemi.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; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/jiffies.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/irq.h>
+#include <linux/list.h>
+#include <linux/mfd/core.h>
+#include <linux/spi/spi.h>
+#include <linux/i2c.h>
+#include <linux/semaphore.h>
+
+#include <linux/mfd/da9052/da9052.h>
+#include <linux/mfd/da9052/adc.h>
+
+#define SUCCESS 0
+#define FAILURE 1
+
+struct da9052_eh_nb eve_nb_array[EVE_CNT];
+static struct da9052_ssc_ops ssc_ops;
+struct mutex manconv_lock;
+static struct semaphore eve_nb_array_lock;
+
+void da9052_lock(struct da9052 *da9052)
+{
+ mutex_lock(&da9052->ssc_lock);
+}
+EXPORT_SYMBOL(da9052_lock);
+
+void da9052_unlock(struct da9052 *da9052)
+{
+ mutex_unlock(&da9052->ssc_lock);
+}
+EXPORT_SYMBOL(da9052_unlock);
+
+int da9052_ssc_write(struct da9052 *da9052, struct da9052_ssc_msg *sscmsg)
+{
+ int ret = 0;
+
+ /* Reg address should be a valid address on PAGE0 or PAGE1 */
+ if ((sscmsg->addr < DA9052_PAGE0_REG_START) ||
+ (sscmsg->addr > DA9052_PAGE1_REG_END) ||
+ ((sscmsg->addr > DA9052_PAGE0_REG_END) &&
+ (sscmsg->addr < DA9052_PAGE1_REG_START)))
+ return INVALID_REGISTER;
+
+ ret = ssc_ops.write(da9052, sscmsg);
+
+ /* Update local cache if required */
+ if (!ret) {
+ /* Check if this register is Non-volatile*/
+ if (da9052->ssc_cache[sscmsg->addr].type != VOLATILE) {
+ /* Update value */
+ da9052->ssc_cache[sscmsg->addr].val = sscmsg->data;
+ /* Make this cache entry valid */
+ da9052->ssc_cache[sscmsg->addr].status = VALID;
+ }
+ }
+
+ return ret;
+}
+
+int da9052_ssc_read(struct da9052 *da9052, struct da9052_ssc_msg *sscmsg)
+{
+ int ret = 0;
+
+ /* Reg addr should be a valid address on PAGE0 or PAGE1 */
+ if ((sscmsg->addr < DA9052_PAGE0_REG_START) ||
+ (sscmsg->addr > DA9052_PAGE1_REG_END) ||
+ ((sscmsg->addr > DA9052_PAGE0_REG_END) &&
+ (sscmsg->addr < DA9052_PAGE1_REG_START)))
+ return INVALID_REGISTER;
+
+ /*
+ * Check if this is a Non-volatile register, if yes then return value -
+ * from cache instead of actual reading from hardware. Before reading -
+ * cache entry, make sure that the entry is valid
+ */
+ /* The read request is for Non-volatile register */
+ /* Check if we have valid cached value for this */
+ if (da9052->ssc_cache[sscmsg->addr].status == VALID) {
+ /* We have valid cached value, copy this value */
+ sscmsg->data = da9052->ssc_cache[sscmsg->addr].val;
+
+ return 0;
+ }
+
+ ret = ssc_ops.read(da9052, sscmsg);
+
+ /* Update local cache if required */
+ if (!ret) {
+ /* Check if this register is Non-volatile*/
+ if (da9052->ssc_cache[sscmsg->addr].type != VOLATILE) {
+ /* Update value */
+ da9052->ssc_cache[sscmsg->addr].val = sscmsg->data;
+ /* Make this cache entry valid */
+ da9052->ssc_cache[sscmsg->addr].status = VALID;
+ }
+ }
+
+ return ret;
+}
+
+int da9052_ssc_write_many(struct da9052 *da9052, struct da9052_ssc_msg *sscmsg,
+ int msg_no)
+{
+ int ret = 0;
+ int cnt = 0;
+
+ /* Check request size */
+ if (msg_no > MAX_READ_WRITE_CNT)
+ return -EIO;
+
+ ret = ssc_ops.write_many(da9052, sscmsg, msg_no);
+ /* Update local cache, if required */
+ for (cnt = 0; cnt < msg_no; cnt++) {
+ /* Check if this register is Non-volatile*/
+ if (da9052->ssc_cache[sscmsg[cnt].addr].type != VOLATILE) {
+ /* Update value */
+ da9052->ssc_cache[sscmsg[cnt].addr].val =
+ sscmsg[cnt].data;
+ /* Make this cache entry valid */
+ da9052->ssc_cache[sscmsg[cnt].addr].status = VALID;
+ }
+ }
+ return ret;
+}
+
+int da9052_ssc_read_many(struct da9052 *da9052, struct da9052_ssc_msg *sscmsg,
+ int msg_no)
+{
+ int ret = 0;
+ int cnt = 0;
+
+ /* Check request size */
+ if (msg_no > MAX_READ_WRITE_CNT)
+ return -EIO;
+
+ ret = ssc_ops.read_many(da9052, sscmsg, msg_no);
+ /* Update local cache, if required */
+ for (cnt = 0; cnt < msg_no; cnt++) {
+ /* Check if this register is Non-volatile*/
+ if (da9052->ssc_cache[sscmsg[cnt].addr].type
+ != VOLATILE) {
+ /* Update value */
+ da9052->ssc_cache[sscmsg[cnt].addr].val =
+ sscmsg[cnt].data;
+ /* Make this cache entry valid */
+ da9052->ssc_cache[sscmsg[cnt].addr].status = VALID;
+ }
+ }
+ return ret;
+}
+
+static irqreturn_t da9052_eh_isr(int irq, void *dev_id)
+{
+ struct da9052 *da9052 = dev_id;
+ /* Schedule work to be done */
+ schedule_work(&da9052->eh_isr_work);
+ /* Disable IRQ */
+ disable_irq_nosync(da9052->irq);
+ return IRQ_HANDLED;
+}
+
+int eh_register_nb(struct da9052 *da9052, struct da9052_eh_nb *nb)
+{
+
+ if (nb == NULL) {
+ printk(KERN_INFO "EH REGISTER FUNCTION FAILED\n");
+ return -EINVAL;
+ }
+
+ if (nb->eve_type >= EVE_CNT) {
+ printk(KERN_INFO "Invalid DA9052 Event Type\n");
+ return -EINVAL;
+ }
+
+ /* Initialize list head inside notifier block */
+ INIT_LIST_HEAD(&nb->nb_list);
+
+ /* Acquire NB array lock */
+ if (down_interruptible(&eve_nb_array_lock))
+ return -EAGAIN;
+
+ /* Add passed NB to corresponding EVENT list */
+ list_add_tail(&nb->nb_list, &(eve_nb_array[nb->eve_type].nb_list));
+
+ /* Release NB array lock */
+ up(&eve_nb_array_lock);
+
+ return 0;
+}
+
+int eh_unregister_nb(struct da9052 *da9052, struct da9052_eh_nb *nb)
+{
+
+ if (nb == NULL)
+ return -EINVAL;
+
+ /* Acquire nb array lock */
+ if (down_interruptible(&eve_nb_array_lock))
+ return -EAGAIN;
+
+ /* Remove passed NB from list */
+ list_del_init(&(nb->nb_list));
+
+ /* Release NB array lock */
+ up(&eve_nb_array_lock);
+
+ return 0;
+}
+
+static int process_events(struct da9052 *da9052, int events_sts)
+{
+
+ int cnt = 0;
+ int tmp_events_sts = 0;
+ unsigned char event = 0;
+
+ struct list_head *ptr;
+ struct da9052_eh_nb *nb_ptr;
+
+ /* Now we have retrieved all events, process them one by one */
+ for (cnt = 0; cnt < EVE_CNT; cnt++) {
+ /*
+ * Starting with highest priority event,
+ * traverse through all event
+ */
+ tmp_events_sts = events_sts;
+
+ /* Find the event associated with higher priority */
+ event = cnt;
+
+ /* Check if interrupt is received for this event */
+ if (!((tmp_events_sts >> cnt) & 0x1))
+ /* Event bit is not set for this event */
+ /* Move to next event */
+ continue;
+
+ if (event == PEN_DOWN_EVE) {
+ if (list_empty(&(eve_nb_array[event].nb_list)))
+ continue;
+ }
+
+ /* Event bit is set, execute all registered call backs */
+ if (down_interruptible(&eve_nb_array_lock)) {
+ printk(KERN_CRIT "Can't acquire eve_nb_array_lock\n");
+ return -EIO;
+ }
+
+ list_for_each(ptr, &(eve_nb_array[event].nb_list)) {
+ /*
+ * nb_ptr will point to the structure in which
+ * nb_list is embedded
+ */
+ nb_ptr = list_entry(ptr, struct da9052_eh_nb, nb_list);
+ nb_ptr->call_back(nb_ptr, events_sts);
+ }
+ up(&eve_nb_array_lock);
+ }
+ return 0;
+}
+
+void eh_workqueue_isr(struct work_struct *work)
+{
+ struct da9052 *da9052 =
+ container_of(work, struct da9052, eh_isr_work);
+
+ struct da9052_ssc_msg eve_data[4];
+ struct da9052_ssc_msg eve_mask_data[4];
+ int events_sts, ret;
+ u32 mask;
+ unsigned char cnt = 0;
+
+ /* nIRQ is asserted, read event registeres to know what happened */
+ events_sts = 0;
+ mask = 0;
+
+ /* Prepare ssc message to read all four event registers */
+ for (cnt = 0; cnt < DA9052_EVE_REGISTERS; cnt++) {
+ eve_data[cnt].addr = (DA9052_EVENTA_REG + cnt);
+ eve_data[cnt].data = 0;
+ }
+
+ /* Prepare ssc message to read all four event registers */
+ for (cnt = 0; cnt < DA9052_EVE_REGISTERS; cnt++) {
+ eve_mask_data[cnt].addr = (DA9052_IRQMASKA_REG + cnt);
+ eve_mask_data[cnt].data = 0;
+ }
+
+ /* Now read all event and mask registers */
+ da9052_lock(da9052);
+
+ ret = da9052_ssc_read_many(da9052, eve_data, DA9052_EVE_REGISTERS);
+ if (ret) {
+ enable_irq(da9052->irq);
+ da9052_unlock(da9052);
+ return;
+ }
+
+ ret = da9052_ssc_read_many(da9052, eve_mask_data, DA9052_EVE_REGISTERS);
+ if (ret) {
+ enable_irq(da9052->irq);
+ da9052_unlock(da9052);
+ return;
+ }
+ /* Collect all events */
+ for (cnt = 0; cnt < DA9052_EVE_REGISTERS; cnt++)
+ events_sts |= (eve_data[cnt].data << (DA9052_EVE_REGISTER_SIZE
+ * cnt));
+ /* Collect all mask */
+ for (cnt = 0; cnt < DA9052_EVE_REGISTERS; cnt++)
+ mask |= (eve_mask_data[cnt].data << (DA9052_EVE_REGISTER_SIZE
+ * cnt));
+ events_sts &= ~mask;
+ da9052_unlock(da9052);
+
+ /* Check if we really got any event */
+ if (events_sts == 0) {
+ enable_irq(da9052->irq);
+ da9052_unlock(da9052);
+ return;
+ }
+
+ /* Process all events occurred */
+ process_events(da9052, events_sts);
+
+ da9052_lock(da9052);
+ /* Now clear EVENT registers */
+ for (cnt = 0; cnt < 4; cnt++) {
+ if (eve_data[cnt].data) {
+ ret = da9052_ssc_write(da9052, &eve_data[cnt]);
+ if (ret) {
+ enable_irq(da9052->irq);
+ da9052_unlock(da9052);
+ return;
+ }
+ }
+ }
+ da9052_unlock(da9052);
+
+ /*
+ * This delay is necessary to avoid hardware fake interrupts
+ * from DA9052.
+ */
+#if defined CONFIG_PMIC_DA9052 || defined CONFIG_PMIC_DA9053AA
+ udelay(50);
+#endif
+ /* Enable HOST interrupt */
+ enable_irq(da9052->irq);
+}
+
+static void da9052_eh_restore_irq(struct da9052 *da9052)
+{
+ /* Put your platform and board specific code here */
+ free_irq(da9052->irq, NULL);
+}
+
+static int da9052_add_subdevice_pdata(struct da9052 *da9052,
+ const char *name, void *pdata, size_t pdata_size)
+{
+ struct mfd_cell cell = {
+ .name = name,
+ .platform_data = pdata,
+ .pdata_size = pdata_size,
+ };
+ return mfd_add_devices(da9052->dev, -1, &cell, 1, NULL, 0);
+}
+
+static int da9052_add_subdevice(struct da9052 *da9052, const char *name)
+{
+ return da9052_add_subdevice_pdata(da9052, name, NULL, 0);
+}
+
+static int add_da9052_devices(struct da9052 *da9052)
+{
+ s32 ret = 0;
+ struct da9052_platform_data *pdata = da9052->dev->platform_data;
+ struct da9052_leds_platform_data leds_data = {
+ .num_leds = pdata->led_data->num_leds,
+ .led = pdata->led_data->led,
+ };
+ struct da9052_regulator_platform_data regulator_pdata = {
+ .regulators = pdata->regulators,
+ };
+
+ struct da9052_tsi_platform_data tsi_data = *(pdata->tsi_data);
+
+ if (pdata && pdata->init) {
+ ret = pdata->init(da9052);
+ if (ret != 0)
+ return ret;
+ } else
+ pr_err("No platform initialisation supplied\n");
+
+ ret = da9052_add_subdevice(da9052, "da9052-rtc");
+ if (ret)
+ return ret;
+ ret = da9052_add_subdevice(da9052, "da9052-onkey");
+ if (ret)
+ return ret;
+
+ ret = da9052_add_subdevice(da9052, "WLED-1");
+ if (ret)
+ return ret;
+
+ ret = da9052_add_subdevice(da9052, "WLED-2");
+ if (ret)
+ return ret;
+
+ ret = da9052_add_subdevice(da9052, "WLED-3");
+ if (ret)
+ return ret;
+
+ ret = da9052_add_subdevice(da9052, "da9052-adc");
+ if (ret)
+ return ret;
+
+ ret = da9052_add_subdevice(da9052, "da9052-wdt");
+ if (ret)
+ return ret;
+
+ ret = da9052_add_subdevice_pdata(da9052, "da9052-leds",
+ &leds_data, sizeof(leds_data));
+ if (ret)
+ return ret;
+
+ ret = da9052_add_subdevice_pdata(da9052, "da9052-regulator",
+ ®ulator_pdata, sizeof(regulator_pdata));
+ if (ret)
+ return ret;
+
+ ret = da9052_add_subdevice_pdata(da9052, "da9052-tsi",
+ &tsi_data, sizeof(tsi_data));
+ if (ret)
+ return ret;
+
+ ret = da9052_add_subdevice(da9052, "da9052-bat");
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
+int da9052_ssc_init(struct da9052 *da9052)
+{
+ int cnt;
+ struct da9052_platform_data *pdata;
+ struct da9052_ssc_msg ssc_msg;
+
+ /* Initialize eve_nb_array */
+ for (cnt = 0; cnt < EVE_CNT; cnt++)
+ INIT_LIST_HEAD(&(eve_nb_array[cnt].nb_list));
+
+ /* Initialize mutex required for ADC Manual read */
+ mutex_init(&manconv_lock);
+
+ /* Initialize NB array lock */
+ sema_init(&eve_nb_array_lock, 1);
+
+ /* Assign the read-write function pointers */
+ da9052->read = da9052_ssc_read;
+ da9052->write = da9052_ssc_write;
+ da9052->read_many = da9052_ssc_read_many;
+ da9052->write_many = da9052_ssc_write_many;
+
+ if (SPI == da9052->connecting_device && ssc_ops.write == NULL) {
+ /* Assign the read/write pointers to SPI/read/write */
+ ssc_ops.write = da9052_spi_write;
+ ssc_ops.read = da9052_spi_read;
+ ssc_ops.write_many = da9052_spi_write_many;
+ ssc_ops.read_many = da9052_spi_read_many;
+ } else if (I2C == da9052->connecting_device
+ && ssc_ops.write == NULL) {
+ /* Assign the read/write pointers to SPI/read/write */
+ ssc_ops.write = da9052_i2c_write;
+ ssc_ops.read = da9052_i2c_read;
+ ssc_ops.write_many = da9052_i2c_write_many;
+ ssc_ops.read_many = da9052_i2c_read_many;
+ } else
+ return -1;
+ /* Assign the EH notifier block register/de-register functions */
+ da9052->register_event_notifier = eh_register_nb;
+ da9052->unregister_event_notifier = eh_unregister_nb;
+
+ /* Initialize ssc lock */
+ mutex_init(&da9052->ssc_lock);
+
+ pdata = da9052->dev->platform_data;
+ add_da9052_devices(da9052);
+
+ INIT_WORK(&da9052->eh_isr_work, eh_workqueue_isr);
+ ssc_msg.addr = DA9052_IRQMASKA_REG;
+ ssc_msg.data = 0xff;
+ da9052->write(da9052, &ssc_msg);
+ ssc_msg.addr = DA9052_IRQMASKC_REG;
+ ssc_msg.data = 0xff;
+ da9052->write(da9052, &ssc_msg);
+ if (request_irq(da9052->irq, da9052_eh_isr, IRQ_TYPE_LEVEL_LOW,
+ DA9052_EH_DEVICE_NAME, da9052))
+ return -EIO;
+ enable_irq_wake(da9052->irq);
+
+ return 0;
+}
+
+void da9052_ssc_exit(struct da9052 *da9052)
+{
+ printk(KERN_INFO "DA9052: Unregistering SSC device.\n");
+ mutex_destroy(&manconv_lock);
+ /* Restore IRQ line */
+ da9052_eh_restore_irq(da9052);
+ free_irq(da9052->irq, NULL);
+ mutex_destroy(&da9052->ssc_lock);
+ mutex_destroy(&da9052->eve_nb_lock);
+ return;
+}
+
+MODULE_AUTHOR("Dialog Semiconductor Ltd <dc...@diasemi.com>");
+MODULE_DESCRIPTION("DA9052 MFD Core");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DA9052_SSC_DEVICE_NAME);
diff --git a/drivers/mfd/da9052-i2c.c b/drivers/mfd/da9052-i2c.c
new file mode 100644
index 0000000..5fd966a
--- /dev/null
+++ b/drivers/mfd/da9052-i2c.c
@@ -0,0 +1,378 @@
+/*
+ * Copyright(c) 2009 Dialog Semiconductor Ltd.
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * da9052-i2c.c: I2C SSC (Synchronous Serial Communication) driver for DA9052
+ */
+
+#include <linux/device.h>
+#include <linux/mfd/core.h>
+#include <linux/i2c.h>
+#include <linux/mfd/da9052/da9052.h>
+#include <linux/mfd/da9052/reg.h>
+
+static struct da9052 *da9052_i2c;
+
+#define I2C_CONNECTED 0
+
+static int da9052_i2c_is_connected(void)
+{
+
+ struct da9052_ssc_msg msg;
+
+ /* printk("Entered da9052_i2c_is_connected.............\n"); */
+
+ msg.addr = DA9052_INTERFACE_REG;
+
+ /* Test spi connectivity by performing read of the GPIO_0-1 register */
+ if (0 != da9052_i2c_read(da9052_i2c, &msg)) {
+ printk(KERN_DEBUG "da9052_i2c_is_connected - "\
+ "i2c read failed.............\n");
+ return -1;
+ } else {
+ printk(KERN_DEBUG "da9052_i2c_is_connected - "\
+ "i2c read success..............\n");
+ return 0;
+ }
+
+}
+
+static int __devinit da9052_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter;
+ /* printk("\n\tEntered da9052_i2c_is_probe.............\n"); */
+
+ da9052_i2c = kzalloc(sizeof(struct da9052), GFP_KERNEL);
+
+ if (!da9052_i2c)
+ return -ENOMEM;
+
+ /* Get the bus driver handler */
+ adapter = to_i2c_adapter(client->dev.parent);
+
+ /* Check i2c bus driver supports byte data transfer */
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+ dev_info(&client->dev,\
+ "Error in %s:i2c_check_functionality\n", __func__);
+ return -ENODEV;
+ }
+
+ /* Store handle to i2c client */
+ da9052_i2c->i2c_client = client;
+ da9052_i2c->irq = client->irq;
+
+ da9052_i2c->dev = &client->dev;
+
+ /* Initialize i2c data structure here*/
+ da9052_i2c->adapter = adapter;
+
+ /* host i2c driver looks only first 7 bits for the slave address */
+ da9052_i2c->slave_addr = DA9052_I2C_ADDR >> 1;
+
+ /* Store the i2c client data */
+ i2c_set_clientdata(client, da9052_i2c);
+
+ /* Validate I2C connectivity */
+ if (I2C_CONNECTED == da9052_i2c_is_connected()) {
+ /* I2C is connected */
+ da9052_i2c->connecting_device = I2C;
+ if (0 != da9052_ssc_init(da9052_i2c))
+ return -ENODEV;
+ } else {
+ return -ENODEV;
+ }
+
+ /* printk("Exiting da9052_i2c_probe.....\n"); */
+
+ return 0;
+}
+
+static int da9052_i2c_remove(struct i2c_client *client)
+{
+
+ struct da9052 *da9052 = i2c_get_clientdata(client);
+
+ mfd_remove_devices(da9052->dev);
+ kfree(da9052);
+ return 0;
+}
+
+int da9052_i2c_write(struct da9052 *da9052, struct da9052_ssc_msg *msg)
+{
+ struct i2c_msg i2cmsg;
+ unsigned char buf[2] = {0};
+ int ret = 0;
+
+ /* Copy the ssc msg to local character buffer */
+ buf[0] = msg->addr;
+ buf[1] = msg->data;
+
+ /*Construct a i2c msg for a da9052 driver ssc message request */
+ i2cmsg.addr = da9052->slave_addr;
+ i2cmsg.len = 2;
+ i2cmsg.buf = buf;
+
+ /* To write the data on I2C set flag to zero */
+ i2cmsg.flags = 0;
+
+ /* Start the i2c transfer by calling host i2c driver function */
+ ret = i2c_transfer(da9052->adapter, &i2cmsg, 1);
+
+ if (ret < 0) {
+ dev_info(&da9052->i2c_client->dev,\
+ "_%s:master_xfer Failed!!\n", __func__);
+ return ret;
+ }
+
+ return 0;
+}
+
+int da9052_i2c_read(struct da9052 *da9052, struct da9052_ssc_msg *msg)
+{
+
+ /*Get the da9052_i2c client details*/
+ unsigned char buf[2] = {0, 0};
+ struct i2c_msg i2cmsg[2];
+ int ret = 0;
+
+ /* Copy SSC Msg to local character buffer */
+ buf[0] = msg->addr;
+
+ /*Construct a i2c msg for a da9052 driver ssc message request */
+ i2cmsg[0].addr = da9052->slave_addr ;
+ i2cmsg[0].len = 1;
+ i2cmsg[0].buf = &buf[0];
+
+ /*To write the data on I2C set flag to zero */
+ i2cmsg[0].flags = 0;
+
+ /* Read the data from da9052*/
+ /*Construct a i2c msg for a da9052 driver ssc message request */
+ i2cmsg[1].addr = da9052->slave_addr ;
+ i2cmsg[1].len = 1;
+ i2cmsg[1].buf = &buf[1];
+
+ /*To read the data on I2C set flag to I2C_M_RD */
+ i2cmsg[1].flags = I2C_M_RD;
+
+ /* Start the i2c transfer by calling host i2c driver function */
+ ret = i2c_transfer(da9052->adapter, i2cmsg, 2);
+ if (ret < 0) {
+ dev_info(&da9052->i2c_client->dev,\
+ "2 - %s:master_xfer Failed!!\n", __func__);
+ return ret;
+ }
+
+ msg->data = *i2cmsg[1].buf;
+
+ return 0;
+}
+
+int da9052_i2c_write_many(struct da9052 *da9052,
+ struct da9052_ssc_msg *sscmsg, int msg_no)
+{
+
+ struct i2c_msg i2cmsg;
+ unsigned char data_buf[MAX_READ_WRITE_CNT+1];
+ struct da9052_ssc_msg ctrlb_msg;
+ struct da9052_ssc_msg *msg_queue = sscmsg;
+ int ret = 0;
+ /* Flag to check if requested registers are contiguous */
+ unsigned char cont_data = 1;
+ unsigned char cnt = 0;
+
+ /* Check if requested registers are contiguous */
+ for (cnt = 1; cnt < msg_no; cnt++) {
+ if ((msg_queue[cnt].addr - msg_queue[cnt-1].addr) != 1) {
+ /* Difference is not 1, i.e. non-contiguous registers */
+ cont_data = 0;
+ break;
+ }
+ }
+
+ if (cont_data == 0) {
+ /* Requested registers are non-contiguous */
+ for (cnt = 0; cnt < msg_no; cnt++) {
+ ret = da9052->write(da9052, &msg_queue[cnt]);
+ if (ret != 0)
+ return ret;
+ }
+ return 0;
+ }
+ /*
+ * Requested registers are contiguous
+ * or PAGE WRITE sequence of I2C transactions is as below
+ * (slave_addr + reg_addr + data_1 + data_2 + ...)
+ * First read current WRITE MODE via CONTROL_B register of DA9052
+ */
+ ctrlb_msg.addr = DA9052_CONTROLB_REG;
+ ctrlb_msg.data = 0x0;
+ ret = da9052->read(da9052, &ctrlb_msg);
+
+ if (ret != 0)
+ return ret;
+
+ /* Check if PAGE WRITE mode is set */
+ if (ctrlb_msg.data & DA9052_CONTROLB_WRITEMODE) {
+ /* REPEAT WRITE mode is configured */
+ /* Now set DA9052 into PAGE WRITE mode */
+ ctrlb_msg.data &= ~DA9052_CONTROLB_WRITEMODE;
+ ret = da9052->write(da9052, &ctrlb_msg);
+
+ if (ret != 0)
+ return ret;
+ }
+
+ /* Put first register address */
+ data_buf[0] = msg_queue[0].addr;
+
+ for (cnt = 0; cnt < msg_no; cnt++)
+ data_buf[cnt+1] = msg_queue[cnt].data;
+
+ /* Construct a i2c msg for PAGE WRITE */
+ i2cmsg.addr = da9052->slave_addr ;
+ /* First register address + all data*/
+ i2cmsg.len = (msg_no + 1);
+ i2cmsg.buf = data_buf;
+
+ /*To write the data on I2C set flag to zero */
+ i2cmsg.flags = 0;
+
+ /* Start the i2c transfer by calling host i2c driver function */
+ ret = i2c_transfer(da9052->adapter, &i2cmsg, 1);
+ if (ret < 0) {
+ dev_info(&da9052->i2c_client->dev,\
+ "1 - i2c_transfer function falied in [%s]!!!\n", __func__);
+ return ret;
+ }
+
+ return 0;
+}
+
+int da9052_i2c_read_many(struct da9052 *da9052,
+ struct da9052_ssc_msg *sscmsg, int msg_no)
+{
+
+ struct i2c_msg i2cmsg;
+ unsigned char data_buf[MAX_READ_WRITE_CNT];
+ struct da9052_ssc_msg *msg_queue = sscmsg;
+ int ret = 0;
+ /* Flag to check if requested registers are contiguous */
+ unsigned char cont_data = 1;
+ unsigned char cnt = 0;
+
+ /* Check if requested registers are contiguous */
+ for (cnt = 1; cnt < msg_no; cnt++) {
+ if ((msg_queue[cnt].addr - msg_queue[cnt-1].addr) != 1) {
+ /* Difference is not 1, i.e. non-contiguous registers */
+ cont_data = 0;
+ break;
+ }
+ }
+
+ if (cont_data == 0) {
+ /* Requested registers are non-contiguous */
+ for (cnt = 0; cnt < msg_no; cnt++) {
+ ret = da9052->read(da9052, &msg_queue[cnt]);
+ if (ret != 0) {
+ dev_info(&da9052->i2c_client->dev,\
+ "Error in %s", __func__);
+ return ret;
+ }
+ }
+ return 0;
+ }
+
+ /*
+ * We want to perform PAGE READ via I2C
+ * For PAGE READ sequence of I2C transactions is as below
+ * (slave_addr + reg_addr) + (slave_addr + data_1 + data_2 + ...)
+ */
+ /* Copy address of first register */
+ data_buf[0] = msg_queue[0].addr;
+
+ /* Construct a i2c msg for first transaction of PAGE READ i.e. write */
+ i2cmsg.addr = da9052->slave_addr ;
+ i2cmsg.len = 1;
+ i2cmsg.buf = data_buf;
+
+ /*To write the data on I2C set flag to zero */
+ i2cmsg.flags = 0;
+
+ /* Start the i2c transfer by calling host i2c driver function */
+ ret = i2c_transfer(da9052->adapter, &i2cmsg, 1);
+ if (ret < 0) {
+ dev_info(&da9052->i2c_client->dev,\
+ "1 - i2c_transfer function falied in [%s]!!!\n", __func__);
+ return ret;
+ }
+
+ /* Now Read the data from da9052 */
+ /* Construct a i2c msg for second transaction of PAGE READ i.e. read */
+ i2cmsg.addr = da9052->slave_addr ;
+ i2cmsg.len = msg_no;
+ i2cmsg.buf = data_buf;
+
+ /*To read the data on I2C set flag to I2C_M_RD */
+ i2cmsg.flags = I2C_M_RD;
+
+ /* Start the i2c transfer by calling host i2c driver function */
+ ret = i2c_transfer(da9052->adapter,
+ &i2cmsg, 1);
+ if (ret < 0) {
+ dev_info(&da9052->i2c_client->dev,\
+ "2 - i2c_transfer function falied in [%s]!!!\n", __func__);
+ return ret;
+ }
+
+ /* Gather READ data */
+ for (cnt = 0; cnt < msg_no; cnt++)
+ sscmsg[cnt].data = data_buf[cnt];
+
+ return 0;
+}
+
+static struct i2c_device_id da9052_ssc_id[] = {
+ { DA9052_SSC_I2C_DEVICE_NAME, 0},
+ {}
+};
+
+static struct i2c_driver da9052_i2c_driver = {
+ .driver = {
+ .name = DA9052_SSC_I2C_DEVICE_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = da9052_i2c_probe,
+ .remove = da9052_i2c_remove,
+ .id_table = da9052_ssc_id,
+};
+
+static int __init da9052_i2c_init(void)
+{
+ int ret = 0;
+ /* printk("\n\nEntered da9052_i2c_init................\n\n"); */
+ ret = i2c_add_driver(&da9052_i2c_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Unable to register %s\n",
+ DA9052_SSC_I2C_DEVICE_NAME);
+ return ret;
+ }
+ return 0;
+}
+subsys_initcall(da9052_i2c_init);
+
+static void __exit da9052_i2c_exit(void)
+{
+ i2c_del_driver(&da9052_i2c_driver);
+}
+module_exit(da9052_i2c_exit);
+
+MODULE_AUTHOR("Dialog Semiconductor Ltd <dc...@diasemi.com>");
+MODULE_DESCRIPTION("I2C driver for Dialog DA9052 PMIC");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DA9052_SSC_I2C_DEVICE_NAME);
diff --git a/drivers/mfd/da9052-spi.c b/drivers/mfd/da9052-spi.c
new file mode 100644
index 0000000..f25e188f
--- /dev/null
+++ b/drivers/mfd/da9052-spi.c
@@ -0,0 +1,402 @@
+/*
+ * Copyright(c) 2009 Dialog Semiconductor Ltd.
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * da9052-spi.c: SPI SSC (Synchronous Serial Communication) driver for DA9052
+ */
+
+#include <linux/device.h>
+#include <linux/mfd/core.h>
+#include <linux/spi/spi.h>
+#include <linux/mfd/da9052/da9052.h>
+#include <linux/mfd/da9052/reg.h>
+
+
+struct da9052 *da9052_spi;
+
+#define SPI_CONNECTED 0
+
+static int da9052_spi_is_connected(void)
+{
+
+ struct da9052_ssc_msg msg;
+
+ /* printk("Entered da9052_spi_is_connected.............\n"); */
+
+ msg.addr = DA9052_INTERFACE_REG;
+
+ /* Test spi connectivity by performing read of the GPIO_0-1 register
+ and then verify the read value*/
+ if (0 != da9052_spi_read(da9052_spi, &msg)) {
+ printk(KERN_DEBUG "da9052_spi_is_connected - "\
+ "spi read failed.............\n");
+ return -1;
+ } else if (0x88 != msg.data) {
+ printk(KERN_DEBUG "da9052_spi_is_connected - " \
+ "spi read failed. Msg data =%x ..............\n",
+ msg.data);
+ return -1;
+ }
+
+ return 0;
+
+}
+
+static int da9052_spi_probe(struct spi_device *spi)
+{
+ /* printk("\n\tEntered da9052_spi_probe.....\n"); */
+
+ da9052_spi = kzalloc(sizeof(struct da9052), GFP_KERNEL);
+
+ if (!da9052_spi)
+ return -ENOMEM;
+
+
+ spi->mode = SPI_MODE_0 | SPI_CPOL;
+ spi->bits_per_word = 8;
+ spi_setup(spi);
+
+ da9052_spi->dev = &spi->dev;
+
+ da9052_spi->spi_dev = spi;
+
+ /*
+ * Allocate memory for RX/TX bufferes used in single register
+ * read/write
+ */
+ da9052_spi->spi_rx_buf = kmalloc(2, GFP_KERNEL | GFP_DMA);
+ if (!da9052_spi->spi_rx_buf)
+ return -ENOMEM;
+
+ da9052_spi->spi_tx_buf = kmalloc(2, GFP_KERNEL | GFP_DMA);
+ if (!da9052_spi->spi_tx_buf)
+ return -ENOMEM;
+
+ da9052_spi->spi_active_page = PAGECON_0;
+ da9052_spi->rw_pol = 1;
+
+
+ dev_set_drvdata(&spi->dev, da9052_spi);
+
+
+ /* Validate SPI connectivity */
+ if (SPI_CONNECTED == da9052_spi_is_connected()) {
+ /* SPI is connected */
+ da9052_spi->connecting_device = SPI;
+ if (0 != da9052_ssc_init(da9052_spi))
+ return -ENODEV;
+ } else {
+ return -ENODEV;
+ }
+
+ /* printk("Exiting da9052_spi_probe.....\n"); */
+
+ return 0;
+}
+
+static int da9052_spi_remove(struct spi_device *spi)
+{
+ struct da9052 *da9052 = dev_get_drvdata(&spi->dev);
+
+ printk("Entered da9052_spi_remove()\n");
+ if (SPI == da9052->connecting_device)
+ da9052_ssc_exit(da9052);
+ mfd_remove_devices(&spi->dev);
+ kfree(da9052->spi_rx_buf);
+ kfree(da9052->spi_tx_buf);
+ kfree(da9052);
+ return 0;
+}
+
+static struct spi_driver da9052_spi_driver = {
+ .driver = {
+ .name = DA9052_SSC_SPI_DEVICE_NAME,
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .probe = da9052_spi_probe,
+ .remove = __devexit_p(da9052_spi_remove),
+};
+
+
+static int da9052_spi_set_page(struct da9052 *da9052, unsigned char page)
+{
+
+ struct da9052_ssc_msg sscmsg;
+ struct spi_message message;
+ struct spi_transfer xfer;
+ int ret = 0;
+
+ printk(KERN_DEBUG "Entered da9052_spi_set_page.....\n");
+ if ((page != PAGECON_0) && ((page != PAGECON_128)))
+ return INVALID_PAGE;
+
+ /* Current configuration is PAGE-0 and write request for PAGE-1 */
+ /* set register address */
+ sscmsg.addr = DA9052_PAGECON0_REG;
+ /* set value */
+ sscmsg.data = page;
+
+ /* Check value of R/W_POL bit of INTERFACE register */
+ if (!da9052->rw_pol) {
+ /* We need to set 0th bit for write operation */
+ sscmsg.addr = ((sscmsg.addr << 1) | RW_POL);
+ } else {
+ /* We need to reset 0th bit for write operation */
+ sscmsg.addr = (sscmsg.addr << 1);
+ }
+
+ /* SMDK-6410 host SPI driver specific stuff */
+
+ /* Build our spi message */
+ printk(KERN_DEBUG "da9052_spi_set_page - "\
+ "Calling spi_message_init.....\n");
+ spi_message_init(&message);
+ memset(&xfer, 0, sizeof(xfer));
+
+ xfer.len = 2;
+ xfer.tx_buf = da9052->spi_tx_buf;
+ xfer.rx_buf = da9052->spi_rx_buf;
+
+ da9052->spi_tx_buf[0] = sscmsg.addr;
+ da9052->spi_tx_buf[1] = sscmsg.data;
+
+ printk(KERN_DEBUG "da9052_spi_set_page - "\
+ "Calling spi_message_add_tail.....\n");
+ spi_message_add_tail(&xfer, &message);
+
+ /* Now, do the i/o */
+ printk(KERN_DEBUG "da9052_spi_set_page - Calling spi_sync.....\n");
+ ret = spi_sync(da9052->spi_dev, &message);
+
+ if (ret == 0) {
+ /* Active Page set successfully */
+ da9052->spi_active_page = page;
+ return 0;
+ } else {
+ /* Error in setting Active Page */
+ return ret;
+ }
+
+ return 0;
+}
+
+int da9052_spi_write(struct da9052 *da9052, struct da9052_ssc_msg *msg)
+{
+
+ struct spi_message message;
+ struct spi_transfer xfer;
+ int ret;
+
+ /*
+ * We need a seperate copy of da9052_ssc_msg so that caller's
+ * copy remains intact
+ */
+ struct da9052_ssc_msg sscmsg;
+
+ /* Copy callers data in to our local copy */
+ sscmsg.addr = msg->addr;
+ sscmsg.data = msg->data;
+
+ if ((sscmsg.addr > PAGE_0_END) &&
+ (da9052->spi_active_page == PAGECON_0)) {
+ /*
+ * Current configuration is PAGE-0 and write request
+ * for PAGE-1
+ */
+ da9052_spi_set_page(da9052, PAGECON_128);
+ /* Set register address accordindly */
+ sscmsg.addr = (sscmsg.addr - PAGE_1_START);
+ } else if ((sscmsg.addr < PAGE_1_START) &&
+ (da9052->spi_active_page == PAGECON_128)) {
+ /*
+ * Current configuration is PAGE-1 and write request
+ * for PAGE-0
+ */
+ da9052_spi_set_page(da9052, PAGECON_0);
+ } else if (sscmsg.addr > PAGE_0_END) {
+ /*
+ * Current configuration is PAGE-1 and write request
+ * for PAGE-1. Just need to adjust register address
+ */
+ sscmsg.addr = (sscmsg.addr - PAGE_1_START);
+ }
+
+ /* Check value of R/W_POL bit of INTERFACE register */
+ if (!da9052->rw_pol) {
+ /* We need to set 0th bit for write operation */
+ sscmsg.addr = ((sscmsg.addr << 1) | RW_POL);
+ } else {
+ /* We need to reset 0th bit for write operation */
+ sscmsg.addr = (sscmsg.addr << 1);
+ }
+
+ /* SMDK-6410 host SPI driver specific stuff */
+
+ /* Build our spi message */
+ spi_message_init(&message);
+ memset(&xfer, 0, sizeof(xfer));
+
+ xfer.len = 2;
+ xfer.tx_buf = da9052->spi_tx_buf;
+ xfer.rx_buf = da9052->spi_rx_buf;
+
+ da9052->spi_tx_buf[0] = sscmsg.addr;
+ da9052->spi_tx_buf[1] = sscmsg.data;
+
+ spi_message_add_tail(&xfer, &message);
+
+ /* Now, do the i/o */
+ ret = spi_sync(da9052->spi_dev, &message);
+
+ return ret;
+}
+
+int da9052_spi_write_many(struct da9052 *da9052, struct da9052_ssc_msg *sscmsg,
+ int msg_no)
+{
+ int cnt, ret = 0;
+
+ for (cnt = 0; cnt < msg_no; cnt++, sscmsg++) {
+ ret = da9052_ssc_write(da9052, sscmsg);
+ if (ret != 0) {
+ printk(KERN_DEBUG "Error in %s\n", __func__);
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+int da9052_spi_read(struct da9052 *da9052, struct da9052_ssc_msg *msg)
+{
+
+ struct spi_message message;
+ struct spi_transfer xfer;
+ int ret;
+
+ /*
+ * We need a seperate copy of da9052_ssc_msg so that
+ * caller's copy remains intact
+ */
+ struct da9052_ssc_msg sscmsg;
+
+
+ /* Copy callers data in to our local copy */
+ sscmsg.addr = msg->addr;
+ sscmsg.data = msg->data;
+
+ if ((sscmsg.addr > PAGE_0_END) &&
+ (da9052->spi_active_page == PAGECON_0)) {
+ /*
+ * Current configuration is PAGE-0 and
+ * read request for PAGE-1
+ */
+ printk(KERN_DEBUG "da9052_spi_read - if PAGECON_128.....\n");
+ da9052_spi_set_page(da9052, PAGECON_128);
+ /* Set register address accordindly */
+ sscmsg.addr = (sscmsg.addr - PAGE_1_START);
+ } else if ((sscmsg.addr < PAGE_1_START) &&
+ (da9052->spi_active_page == PAGECON_128)) {
+ /*
+ * Current configuration is PAGE-1 and
+ * write request for PAGE-0
+ */
+ printk(KERN_DEBUG "da9052_spi_read - if PAGECON_0.....\n");
+ da9052_spi_set_page(da9052, PAGECON_0);
+ } else if (sscmsg.addr > PAGE_0_END) {
+ /*
+ * Current configuration is PAGE-1 and write
+ * request for PAGE-1
+ * Just need to adjust register address
+ */
+ sscmsg.addr = (sscmsg.addr - PAGE_1_START);
+ }
+
+ /* Check value of R/W_POL bit of INTERFACE register */
+ if (da9052->rw_pol) {
+ /* We need to set 0th bit for read operation */
+ sscmsg.addr = ((sscmsg.addr << 1) | RW_POL);
+ } else {
+ /* We need to reset 0th bit for write operation */
+ sscmsg.addr = (sscmsg.addr << 1);
+ }
+
+ /* SMDK-6410 host SPI driver specific stuff */
+
+ /* Build our spi message */
+ spi_message_init(&message);
+ memset(&xfer, 0, sizeof(xfer));
+
+ xfer.len = 2;
+ xfer.tx_buf = da9052->spi_tx_buf;
+ xfer.rx_buf = da9052->spi_rx_buf;
+
+ da9052->spi_tx_buf[0] = sscmsg.addr;
+ da9052->spi_tx_buf[1] = 0xff;
+
+ da9052->spi_rx_buf[0] = 0;
+ da9052->spi_rx_buf[1] = 0;
+
+ spi_message_add_tail(&xfer, &message);
+
+ /* Now, do the i/o */
+ ret = spi_sync(da9052->spi_dev, &message);
+
+ if (ret == 0) {
+ /* Update read value in callers copy */
+ msg->data = da9052->spi_rx_buf[1];
+ return 0;
+ } else {
+ return ret;
+ }
+
+
+ return 0;
+}
+
+int da9052_spi_read_many(struct da9052 *da9052, struct da9052_ssc_msg *sscmsg,
+ int msg_no)
+{
+ int cnt, ret = 0;
+
+ for (cnt = 0; cnt < msg_no; cnt++, sscmsg++) {
+ ret = da9052_ssc_read(da9052, sscmsg);
+ if (ret != 0) {
+ printk(KERN_DEBUG "Error in %s\n", __func__);
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+static int __init da9052_spi_init(void)
+{
+ int ret = 0;
+ /*printk("Entered da9052_spi_init.....\n");*/
+ ret = spi_register_driver(&da9052_spi_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Unable to register %s\n",
+ DA9052_SSC_SPI_DEVICE_NAME);
+ return ret;
+ }
+ return 0;
+}
+module_init(da9052_spi_init);
+
+static void __exit da9052_spi_exit(void)
+{
+ spi_unregister_driver(&da9052_spi_driver);
+}
+
+module_exit(da9052_spi_exit);
+
+MODULE_AUTHOR("Dialog Semiconductor Ltd <dc...@diasemi.com>");
+MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DA9052_SSC_SPI_DEVICE_NAME);
--
1.7.5.3
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