This change introduces a driver for the HTC PLD chip found
on some smartphones, such as the HTC Wizard and HTC Herald.
It works through the I2C bus and acts as a GPIO extender.
Specifically:
* it can have several sub-devices, each with its own I2C
address
* Each sub-device provides 8 output and 8 input pins
* The chip attaches to one GPIO to signal when any of the
input GPIOs change -- at which point all chips must be
scanned for changes
This driver implements the GPIOs throught the kernel's
GPIO and IRQ framework. This allows any GPIO-servicing
drivers to operate on htcpld pins, such as the gpio-keys
and gpio-leds drivers.
Signed-off-by: Cory Maccarrone <darkstar6262@xxxxxxxxx>
---
drivers/mfd/Kconfig | 9 +
drivers/mfd/Makefile | 1 +
drivers/mfd/htc-i2cpld.c | 608 ++++++++++++++++++++++++++++++++++++++++++++++
include/linux/htcpld.h | 24 ++
4 files changed, 642 insertions(+), 0 deletions(-)
create mode 100644 drivers/mfd/htc-i2cpld.c
create mode 100644 include/linux/htcpld.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 08f2d07..f8283cf 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -60,6 +60,15 @@ config HTC_PASIC3
HTC Magician devices, respectively. Actual functionality is
handled by the leds-pasic3 and ds1wm drivers.
+config HTC_I2CPLD
+ bool "HTC I2C PLD chip support"
+ depends on I2C
+ help
+ If you say yes here you get support for the supposed CPLD
+ found on omap850 HTC devices like the HTC Wizard and HTC Herald.
+ This device provides input and output GPIOs through an I2C
+ interface to one or more sub-chips.
+
config UCB1400_CORE
tristate "Philips UCB1400 Core driver"
depends on AC97_BUS
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index af0fc90..a374457 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_MFD_ASIC3) += asic3.o
obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o
obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
+obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o
obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o
diff --git a/drivers/mfd/htc-i2cpld.c b/drivers/mfd/htc-i2cpld.c
new file mode 100644
index 0000000..d7978ef
--- /dev/null
+++ b/drivers/mfd/htc-i2cpld.c
@@ -0,0 +1,608 @@
+/*
+ * htc-i2cpld.c
+ * Chip driver for a ?cpld? found on omap850 HTC devices like the
+ * HTC Wizard and HTC Herald.
+ * The cpld is located on the i2c bus and acts as an input/output GPIO
+ * extender.
+ *
+ * Copyright (C) 2009 Cory Maccarrone <darkstar6262@xxxxxxxxx>
+ *
+ * Based on work done in the linwizard project
+ * Copyright (C) 2008-2009 Angelo Arrifano <miknix@xxxxxxxxx>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/spinlock.h>
+#include <linux/htcpld.h>
+#include <asm/gpio.h>
+
+void htcpld_chip_set_ni(struct work_struct *work);
+
+struct htcpld_chip {
+ spinlock_t lock;
+
+ /* chip info */
+ u8 reset;
+ u8 addr;
+ struct device *dev;
+ struct i2c_client *client;
+
+ /* Output details */
+ u8 cache_out;
+ struct gpio_chip chip_out;
+
+ /* Input details */
+ u8 cache_in;
+ struct gpio_chip chip_in;
+
+ u16 irqs_enabled;
+ uint irq_start;
+ int nirqs;
+
+ /*
+ * Work structure to allow for setting values outside of any
+ * possible interrupt context
+ */
+ struct work_struct set_val_work;
+};
+
+struct htcpld_data {
+ /* irq info */
+ u16 irqs_enabled;
+ uint irq_start;
+ int nirqs;
+ uint chained_irq;
+ unsigned int int_reset_gpio_hi;
+ unsigned int int_reset_gpio_lo;
+
+ /* htcpld info */
+ struct htcpld_chip *chip;
+ unsigned int nchips;
+
+ /*
+ * Work structure to allow for reading from the chip outside
+ * of interrupt context
+ */
+ struct delayed_work interrupt_work;
+};
+
+/* There does not appear to be a way to proactively mask interrupts
+ * on the htcpld chip itself. So, we simply ignore interrupts that
+ * aren't desired. */
+static void htcpld_mask(unsigned int irq)
+{
+ struct htcpld_chip *chip = get_irq_chip_data(irq);
+ chip->irqs_enabled &= ~(1 << (irq - chip->irq_start));
+ pr_debug("HTCPLD mask %d %04x\n", irq, chip->irqs_enabled);
+}
+static void htcpld_unmask(unsigned int irq)
+{
+ struct htcpld_chip *chip = get_irq_chip_data(irq);
+ chip->irqs_enabled |= 1 << (irq - chip->irq_start);
+ pr_debug("HTCPLD unmask %d %04x\n", irq, chip->irqs_enabled);
+}
+
+static int htcpld_set_type(unsigned int irq, unsigned int flags)
+{
+ if (flags & ~IRQ_TYPE_SENSE_MASK)
+ return -EINVAL;
+
+ /* We only allow edge triggering */
+ if (flags & (IRQ_TYPE_LEVEL_LOW|IRQ_TYPE_LEVEL_HIGH))
+ return -EINVAL;
+
+ irq_desc[irq].status &= ~IRQ_TYPE_SENSE_MASK;
+ irq_desc[irq].status |= flags;
+
+ return 0;
+}
+
+static struct irq_chip htcpld_muxed_chip = {
+ .name = "htcpld",
+ .mask = htcpld_mask,
+ .unmask = htcpld_unmask,
+ .set_type = htcpld_set_type,
+};
+
+static irqreturn_t htcpld_handler(int irq, void *dev)
+{
+ struct htcpld_data *htcpld = dev;
+
+ int state = gpio_get_value(irq_to_gpio(irq)) ? 1 : 0;
+
+ if (state)
+ set_irq_type(irq, IRQ_TYPE_EDGE_FALLING);
+ else
+ set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
+
+ /* To properly dispatch IRQ events, we need to read from the
+ * chip. This is an I2C action that could possibly sleep
+ * (which is bad here, since we're in interrupt context).
+ * As such, the rest of this is implemented in a process-context
+ * workload that will take care of the actual dispatch.
+ */
+ schedule_delayed_work(&(htcpld->interrupt_work), 0);
+
+ return IRQ_HANDLED;
+}
+
+void htcpld_handler_ni(struct work_struct *work)
+{
+ struct htcpld_data *htcpld = container_of(work, struct htcpld_data, interrupt_work.work);
+ unsigned int i;
+ unsigned long flags;
+ int irqpin, irq;
+ struct irq_desc *desc;
+
+ if (!htcpld) {
+ printk(KERN_INFO "htcpld is null\n");
+ return;
+ }
+
+ /*
+ * For each chip, do a read of the chip and trigger any interrupts
+ * desired. The interrupts will be triggered from LSB to MSB (i.e.
+ * bit 0 first, then bit 1, etc.)
+ *
+ * For chips that have no interrupt range specified, just skip 'em.
+ */
+ for (i = 0; i < htcpld->nchips; i++) {
+ struct htcpld_chip *chip = &htcpld->chip[i];
+ struct i2c_client *client;
+ int val;
+ unsigned long uval, old_val;
+
+ if (!chip) {
+ printk(KERN_INFO "chip %d is null\n", i);
+ continue;
+ }
+
+ if (chip->nirqs == 0)
+ continue;
+
+ client = chip->client;
+ if (!client) {
+ printk(KERN_INFO "client %d is null\n", i);
+ continue;
+ }
+
+ /* Scan the chip */
+ val = i2c_smbus_read_byte_data(client, chip->cache_out);
+ if (val < 0) {
+ /* Throw a warning and skip this chip */
+ dev_warn(chip->dev, "Unable to read from chip: %d\n", val);
+ continue;
+ }
+
+ uval = (unsigned long)val;
+
+ spin_lock_irqsave(&chip->lock, flags);
+
+ /* Save away the old value so we can compare it */
+ old_val = chip->cache_in;
+
+ /* Write the new value */
+ chip->cache_in = uval;
+
+ spin_unlock_irqrestore(&chip->lock, flags);
+
+ /*
+ * For each bit in the data (starting at bit 0), trigger
+ * associated interrupts.
+ */
+ for (irqpin = 0; irqpin < chip->nirqs; irqpin++) {
+ unsigned old_bit, new_bit;
+
+ irq = chip->irq_start + irqpin;
+ desc = irq_to_desc(irq);
+
+ /* Run the IRQ handler, but only if the bit value
+ * changed, and the proper flags are set */
+ old_bit = (old_val >> irqpin) & 1;
+ new_bit = (uval >> irqpin) & 1;
+
+ if ((old_bit == 0 && new_bit == 1 && desc->status & IRQ_TYPE_EDGE_RISING) ||
+ (old_bit == 1 && new_bit == 0 && desc->status & IRQ_TYPE_EDGE_FALLING))
+ {
+ pr_debug("fire IRQ %d\n", irqpin);
+ desc->handle_irq(irq, desc);
+ }
+ }
+ }
+
+ /*
+ * In order to continue receiving interrupts, the int_reset_gpio must
+ * be asserted.
+ */
+ if (htcpld->int_reset_gpio_hi)
+ gpio_set_value(htcpld->int_reset_gpio_hi, 1);
+ if (htcpld->int_reset_gpio_lo)
+ gpio_set_value(htcpld->int_reset_gpio_lo, 0);
+}
+
+/*
+ * The GPIO set routines can be called from interrupt context, especially if,
+ * for example they're attached to the led-gpio framework and a trigger is
+ * enabled. As such, we declared work above in the htcpld_chip structure,
+ * and that work is scheduled in the set routine. The kernel can then run
+ * the I2C functions, which will sleep, in process context.
+ */
+void htcpld_chip_set(struct gpio_chip *chip, unsigned offset, int val)
+{
+ struct i2c_client *client;
+ struct htcpld_chip *chip_data;
+ unsigned long flags;
+
+ chip_data = container_of(chip, struct htcpld_chip, chip_out);
+ if (!chip_data)
+ return;
+
+ client = chip_data->client;
+ if (client == NULL)
+ return;
+
+ spin_lock_irqsave(&chip_data->lock, flags);
+ if (val)
+ chip_data->cache_out |= (1 << offset);
+ else
+ chip_data->cache_out &= ~(1 << offset);
+ spin_unlock_irqrestore(&chip_data->lock, flags);
+
+ schedule_work(&(chip_data->set_val_work));
+}
+
+void htcpld_chip_set_ni(struct work_struct *work) {
+ struct htcpld_chip *chip_data = container_of(work, struct htcpld_chip, set_val_work);
+ struct i2c_client *client;
+
+ client = chip_data->client;
+ i2c_smbus_read_byte_data(client, chip_data->cache_out);
+}
+
+int htcpld_chip_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct htcpld_chip *chip_data;
+ int val = 0;
+ int is_input = 0;
+
+ /* Try out first */
+ chip_data = container_of(chip, struct htcpld_chip, chip_out);
+ if (!chip_data) {
+ /* Try in */
+ is_input = 1;
+ chip_data = container_of(chip, struct htcpld_chip, chip_in);
+ if (!chip_data)
+ return -EINVAL;
+ }
+
+ /* Determine if this is an input or output GPIO */
+ if (!is_input)
+ /* Use the output cache */
+ val = (chip_data->cache_out >> offset) & 1;
+ else
+ /* Use the input cache */
+ val = (chip_data->cache_in >> offset) & 1;
+
+ if (val)
+ return 1;
+ else
+ return 0;
+}
+
+static int htcpld_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ htcpld_chip_set(chip, offset, value);
+ return 0;
+}
+
+static int htcpld_direction_input(struct gpio_chip *chip,
+ unsigned offset)
+{
+ /*
+ * No-op: this function can only be called on the input chip.
+ * We do however make sure the offset is within range.
+ */
+ return (offset < chip->ngpio) ? 0 : -EINVAL;
+}
+
+int htcpld_chip_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+ struct htcpld_chip *chip_data = container_of(chip, struct htcpld_chip, chip_in);
+ return (offset < chip_data->nirqs) ? (chip_data->irq_start + offset) : -EINVAL;
+}
+
+void htcpld_chip_reset(struct i2c_client *client)
+{
+ struct htcpld_chip *chip_data = i2c_get_clientdata(client);
+ if (!chip_data)
+ return;
+
+ i2c_smbus_read_byte_data(
+ client, (chip_data->cache_out = chip_data->reset));
+}
+
+static int __devinit htcpld_core_probe(struct platform_device *pdev)
+{
+ struct htcpld_data *htcpld;
+ struct device *dev = &pdev->dev;
+ struct htcpld_core_platform_data *pdata;
+ struct resource *res;
+ int i, ret = 0;
+ unsigned int irq, irq_end;
+
+ if (!dev)
+ return -ENODEV;
+
+ pdata = (struct htcpld_core_platform_data *)dev->platform_data;
+ if (!pdata) {
+ printk(KERN_ERR "Platform data not found for htcpld core!\n");
+ return -ENXIO;
+ }
+
+ htcpld = kzalloc(sizeof(struct htcpld_data), GFP_KERNEL);
+ if (!htcpld)
+ return -ENOMEM;
+
+ /* Find chained irq */
+ ret = -EINVAL;
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (res)
+ htcpld->chained_irq = res->start;
+
+ platform_set_drvdata(pdev, htcpld);
+
+ INIT_DELAYED_WORK(&(htcpld->interrupt_work), &htcpld_handler_ni);
+ htcpld->int_reset_gpio_hi = pdata->int_reset_gpio_hi;
+ htcpld->int_reset_gpio_lo = pdata->int_reset_gpio_lo;
+
+ /* Setup each chip's output GPIOs */
+ htcpld->nchips = pdata->num_chip;
+ htcpld->chip = kzalloc(sizeof(struct htcpld_chip) * htcpld->nchips, GFP_KERNEL);
+ if (!htcpld->chip) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ for (i = 0; i < htcpld->nchips; i++) {
+ struct i2c_adapter *adapter;
+ struct i2c_client *client;
+ struct i2c_board_info info;
+ struct gpio_chip *chip;
+ int ret;
+
+ /* Setup the HTCPLD chips */
+ htcpld->chip[i].reset = pdata->chip[i].reset;
+ htcpld->chip[i].cache_out = pdata->chip[i].reset;
+ htcpld->chip[1].cache_in = 0;
+ htcpld->chip[i].dev = dev;
+ htcpld->chip[i].irq_start = pdata->chip[i].irq_base;
+ htcpld->chip[i].nirqs = pdata->chip[i].num_irqs;
+
+ INIT_WORK(&(htcpld->chip[i].set_val_work), &htcpld_chip_set_ni);
+ spin_lock_init(&(htcpld->chip[i].lock));
+
+ /* Setup the IRQs */
+ if (htcpld->chained_irq) {
+ int error = 0;
+
+ /* Setup irq handlers */
+ irq_end = htcpld->chip[i].irq_start + htcpld->chip[i].nirqs;
+ for (irq = htcpld->chip[i].irq_start; irq < irq_end; irq++) {
+ set_irq_chip(irq, &htcpld_muxed_chip);
+ set_irq_chip_data(irq, &htcpld->chip[i]);
+ set_irq_handler(irq, handle_simple_irq);
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+ }
+
+ error = request_irq(htcpld->chained_irq, htcpld_handler,
+ IRQF_TRIGGER_FALLING | IRQF_SAMPLE_RANDOM,
+ pdev->name, htcpld);
+
+ device_init_wakeup(dev, 0);
+ }
+
+ /* Setup the GPIO chips */
+ chip = &(htcpld->chip[i].chip_out);
+ chip->label = "htcpld-out";
+ chip->dev = dev;
+ chip->owner = THIS_MODULE;
+ chip->get = htcpld_chip_get;
+ chip->set = htcpld_chip_set;
+ chip->direction_input = NULL;
+ chip->direction_output = htcpld_direction_output;
+ chip->base = pdata->chip[i].gpio_out_base;
+ chip->ngpio = pdata->chip[i].num_gpios;
+
+ chip = &(htcpld->chip[i].chip_in);
+ chip->label = "htcpld-in";
+ chip->dev = dev;
+ chip->owner = THIS_MODULE;
+ chip->get = htcpld_chip_get;
+ chip->set = NULL;
+ chip->direction_input = htcpld_direction_input;
+ chip->direction_output = NULL;
+ chip->to_irq = htcpld_chip_to_irq;
+ chip->base = pdata->chip[i].gpio_in_base;
+ chip->ngpio = pdata->chip[i].num_gpios;
+
+ /* Register the chip with I2C */
+ adapter = i2c_get_adapter(pdata->i2c_adapter_id);
+ if (adapter == NULL) {
+ /*
+ * Eek, no such I2C adapter! Try and continue
+ * with the next chip.
+ */
+ dev_warn(dev, "Chip at i2c address 0x%x: Invalid i2c adapter %d\n",
+ pdata->chip[i].addr, pdata->i2c_adapter_id);
+ continue;
+ }
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_READ_BYTE_DATA))
+ dev_warn(dev, "i2c adapter %d non-functional\n",
+ pdata->i2c_adapter_id);
+
+ memset(&info, 0, sizeof(struct i2c_board_info));
+ info.addr = pdata->chip[i].addr;
+ strlcpy(info.type, "htcpld-chip", I2C_NAME_SIZE);
+ info.platform_data = &(htcpld->chip[i]);
+
+ /* Add the I2C device. This calls the probe() function. */
+ client = i2c_new_device(adapter, &info);
+ if (!client) {
+ /* I2C device registration failed, contineu with the next */
+ dev_warn(dev, "Unable to add I2C device for 0x%x\n",
+ pdata->chip[i].addr);
+ continue;
+ }
+
+ i2c_set_clientdata(client, &(htcpld->chip[i]));
+ snprintf(client->name, I2C_NAME_SIZE, "Chip_0x%d", client->addr);
+ htcpld->chip[i].client = client;
+
+ /* Reset the chip */
+ htcpld_chip_reset(client);
+ htcpld->chip[i].cache_in = i2c_smbus_read_byte_data(client, htcpld->chip[i].cache_out);
+
+ /* Add the GPIO chips */
+ ret = gpiochip_add(&(htcpld->chip[i].chip_out));
+ if (ret != 0) {
+ /*
+ * GPIO adding failed, undo the I2C registration and
+ * bail out
+ */
+ dev_warn(dev, "Unable to register GPIOs for 0x%x: %d\n",
+ pdata->chip[i].addr, ret);
+
+ /* This call can't fail */
+ i2c_unregister_device(client);
+ continue;
+ }
+
+ ret = gpiochip_add(&(htcpld->chip[i].chip_in));
+ if (ret != 0) {
+ /*
+ * GPIO adding failed, undo the I2C registration and
+ * bail out
+ */
+ dev_warn(dev, "Unable to register GPIOs for 0x%x: %d\n",
+ pdata->chip[i].addr, ret);
+
+ ret = gpiochip_remove(&(htcpld->chip[i].chip_out));
+ if (ret)
+ dev_warn(dev, "Unable to unregister output gpio for 0x%d: %d\n",
+ pdata->chip[i].addr, ret);
+
+ /* This call can't fail */
+ i2c_unregister_device(client);
+ continue;
+ }
+
+ printk(KERN_INFO "htcpld: Registered chip at 0x%x\n", client->addr);
+ }
+
+ /* Request the GPIO(s) for the int reset and set them up */
+ if (htcpld->int_reset_gpio_hi) {
+ ret = gpio_request(htcpld->int_reset_gpio_hi, "htcpld-core");
+ if (ret) {
+ /*
+ * If it failed, that sucks, but we can probably continue
+ * on without it.
+ */
+ dev_warn(dev, "Unable to request int_reset_gpio_hi -- interrupts may not work\n");
+ htcpld->int_reset_gpio_hi = 0;
+ } else
+ gpio_set_value(htcpld->int_reset_gpio_hi, 1);
+ }
+
+ if (htcpld->int_reset_gpio_lo) {
+ ret = gpio_request(htcpld->int_reset_gpio_lo, "htcpld-core");
+ if (ret) {
+ /*
+ * If it failed, that sucks, but we can probably continue
+ * on without it.
+ */
+ dev_warn(dev, "Unable to request int_reset_gpio_lo -- interrupts may not work\n");
+ htcpld->int_reset_gpio_lo = 0;
+ } else
+ gpio_set_value(htcpld->int_reset_gpio_lo, 0);
+ }
+
+ /* Set them up initially */
+
+ printk(KERN_INFO "htcpld: Initialized successfully\n");
+ return 0;
+
+fail:
+ kfree(htcpld);
+ return ret;
+}
+
+/* The I2C Driver -- used internally */
+static const struct i2c_device_id htcpld_chip_id[] = {
+ { "htcpld-chip", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, htcpld_chip_id);
+
+
+static struct i2c_driver htcpld_chip_driver = {
+ .driver = {
+ .name = "htcpld-chip",
+ },
+ .id_table = htcpld_chip_id,
+};
+
+/* The Core Driver */
+static struct platform_driver htcpld_core_driver = {
+ .driver = {
+ .name = "i2c-htcpld",
+ },
+};
+
+static int __init htcpld_core_init(void)
+{
+ int ret;
+
+ /* Register the I2C Chip driver */
+ ret = i2c_add_driver(&htcpld_chip_driver);
+ if (ret)
+ return ret;
+
+ /* Probe for our chips */
+ return platform_driver_probe(&htcpld_core_driver, htcpld_core_probe);
+}
+
+static void __exit htcpld_core_exit(void)
+{
+ i2c_del_driver(&htcpld_chip_driver);
+ platform_driver_unregister(&htcpld_core_driver);
+}
+
+module_init(htcpld_core_init);
+module_exit(htcpld_core_exit);
+
+MODULE_AUTHOR("Cory Maccarrone <darkstar6262@xxxxxxxxx>");
+MODULE_DESCRIPTION("I2C HTC PLD Driver");
+MODULE_LICENSE("GPL");
+
diff --git a/include/linux/htcpld.h b/include/linux/htcpld.h
new file mode 100644
index 0000000..ab3f6cb
--- /dev/null
+++ b/include/linux/htcpld.h
@@ -0,0 +1,24 @@
+#ifndef __LINUX_HTCPLD_H
+#define __LINUX_HTCPLD_H
+
+struct htcpld_chip_platform_data {
+ unsigned int addr;
+ unsigned int reset;
+ unsigned int num_gpios;
+ unsigned int gpio_out_base;
+ unsigned int gpio_in_base;
+ unsigned int irq_base;
+ unsigned int num_irqs;
+};
+
+struct htcpld_core_platform_data {
+ unsigned int int_reset_gpio_hi;
+ unsigned int int_reset_gpio_lo;
+ unsigned int i2c_adapter_id;
+
+ struct htcpld_chip_platform_data *chip;
+ unsigned int num_chip;
+};
+
+#endif /* __LINUX_HTCPLD_H */
+
--
1.6.3.3
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