RMI Function 01 implements basic device control and power management
behaviors for the RMI4 sensor. Since the last patch, we've decoupled rmi_f01.c
implementation from rmi_driver.c, so rmi_f01.c acts as a standard driver
module to handle F01 devices on the RMI bus.
Like other modules, a number of attributes have been moved from sysfs to
debugfs, depending on their expected use.
rmi_f01.h exports definitions that we expect to be used by other functionality
in the future (such as firmware reflash).
Signed-off-by: Christopher Heiny <cheiny@xxxxxxxxxxxxx>
Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxxxxxx>
Cc: Naveen Kumar Gaddipati <naveen.gaddipati@xxxxxxxxxxxxxx>
Cc: Joeri de Gram <j.de.gram@xxxxxxxxx>
---
drivers/input/rmi4/rmi_f01.c | 1463 ++++++++++++++++++++++++++++++++++++++++++
drivers/input/rmi4/rmi_f01.h | 136 ++++
2 files changed, 1599 insertions(+), 0 deletions(-)
diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c
new file mode 100644
index 0000000..d734f46
--- /dev/null
+++ b/drivers/input/rmi4/rmi_f01.c
@@ -0,0 +1,1463 @@
+/*
+ * Copyright (c) 2011-2012 Synaptics Incorporated
+ * Copyright (c) 2011 Unixphere
+ *
+ * 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/debugfs.h>
+#include <linux/kconfig.h>
+#include <linux/rmi.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include "rmi_driver.h"
+#include "rmi_f01.h"
+
+/**
+ * @reset - set this bit to force a firmware reset of the sensor.
+ */
+union f01_device_commands {
+ struct {
+ bool reset:1;
+ u8 reserved:7;
+ } __attribute__((__packed__));
+ u8 reg;
+};
+
+/**
+ * @ctrl0 - see documentation in rmi_f01.h.
+ * @interrupt_enable - A mask of per-function interrupts on the touch sensor.
+ * @doze_interval - controls the interval between checks for finger presence
+ * when the touch sensor is in doze mode, in units of 10ms.
+ * @wakeup_threshold - controls the capacitance threshold at which the touch
+ * sensor will decide to wake up from that low power state.
+ * @doze_holdoff - controls how long the touch sensor waits after the last
+ * finger lifts before entering the doze state, in units of 100ms.
+ */
+struct f01_device_control {
+ union f01_device_control_0 ctrl0;
+ u8 *interrupt_enable;
+ u8 doze_interval;
+ u8 wakeup_threshold;
+ u8 doze_holdoff;
+};
+
+/**
+ * @has_ds4_queries - if true, the query registers relating to Design Studio 4
+ * features are present.
+ * @has_multi_phy - if true, multiple physical communications interfaces are
+ * supported.
+ * @has_guest - if true, a "guest" device is supported.
+ */
+union f01_query_42 {
+ struct {
+ bool has_ds4_queries:1;
+ bool has_multi_phy:1;
+ bool has_guest:1;
+ u8 reserved:5;
+ } __attribute__((__packed__));
+ u8 regs[1];
+};
+
+/**
+ * @length - the length of the remaining Query43.* register block, not
+ * including the first register.
+ * @has_package_id_query - the package ID query data will be accessible from
+ * inside the ProductID query registers.
+ * @has_packrat_query - the packrat query data will be accessible from inside
+ * the ProductID query registers.
+ * @has_reset_query - the reset pin related registers are valid.
+ * @has_maskrev_query - the silicon mask revision number will be reported.
+ * @has_i2c_control - the register F01_RMI_Ctrl6 will exist.
+ * @has_spi_control - the register F01_RMI_Ctrl7 will exist.
+ * @has_attn_control - the register F01_RMI_Ctrl8 will exist.
+ * @reset_enabled - the hardware reset pin functionality has been enabled
+ * for this device.
+ * @reset_polarity - If this bit reports as ‘0’, it means that the reset state
+ * is active low. A ‘1’ means that the reset state is active high.
+ * @pullup_enabled - If set, it indicates that a built-in weak pull up has
+ * been enabled on the Reset pin; clear means that no pull-up is present.
+ * @reset_pin_number - This field represents which GPIO pin number has been
+ * assigned the reset functionality.
+ */
+union f01_ds4_queries {
+ struct {
+ u8 length:4;
+ u8 reserved_1:4;
+
+ bool has_package_id_query:1;
+ bool has_packrat_query:1;
+ bool has_reset_query:1;
+ bool has_maskrev_query:1;
+ u8 reserved_2:4;
+
+ bool has_i2c_control:1;
+ bool has_spi_control:1;
+ bool has_attn_control:1;
+ u8 reserved_3:5;
+
+ bool reset_enabled:1;
+ bool reset_polarity:1;
+ bool pullup_enabled:1;
+ u8 reserved_4:1;
+ u8 reset_pin_number:4;
+ } __attribute__((__packed__));
+ u8 regs[4];
+};
+
+struct f01_data {
+ struct f01_device_control device_control;
+ union f01_basic_queries basic_queries;
+ union f01_device_status device_status;
+ u8 product_id[RMI_PRODUCT_ID_LENGTH+1];
+
+ u16 interrupt_enable_addr;
+ u16 doze_interval_addr;
+ u16 wakeup_threshold_addr;
+ u16 doze_holdoff_addr;
+
+ int irq_count;
+ int num_of_irq_regs;
+
+#ifdef CONFIG_PM
+ bool suspended;
+ bool old_nosleep;
+#endif
+
+#ifdef CONFIG_RMI4_DEBUG
+ struct dentry *debugfs_interrupt_enable;
+#endif
+};
+
+#ifdef CONFIG_RMI4_DEBUG
+struct f01_debugfs_data {
+ bool done;
+ struct rmi_function_container *fc;
+};
+
+static int f01_debug_open(struct inode *inodep, struct file *filp)
+{
+ struct f01_debugfs_data *data;
+ struct rmi_function_container *fc = inodep->i_private;
+
+ data = devm_kzalloc(&fc->dev, sizeof(struct f01_debugfs_data),
+ GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->fc = fc;
+ filp->private_data = data;
+ return 0;
+}
+
+static ssize_t interrupt_enable_read(struct file *filp, char __user *buffer,
+ size_t size, loff_t *offset) {
+ int i;
+ int len;
+ int total_len = 0;
+ char local_buf[size];
+ char *current_buf = local_buf;
+ struct f01_debugfs_data *data = filp->private_data;
+ struct f01_data *f01 = data->fc->data;
+
+ if (data->done)
+ return 0;
+
+ data->done = 1;
+
+ /* loop through each irq value and copy its
+ * string representation into buf */
+ for (i = 0; i < f01->irq_count; i++) {
+ int irq_reg;
+ int irq_shift;
+ int interrupt_enable;
+
+ irq_reg = i / 8;
+ irq_shift = i % 8;
+ interrupt_enable =
+ ((f01->device_control.interrupt_enable[irq_reg]
+ >> irq_shift) & 0x01);
+
+ /* get next irq value and write it to buf */
+ len = snprintf(current_buf, size - total_len,
+ "%u ", interrupt_enable);
+ /* bump up ptr to next location in buf if the
+ * snprintf was valid. Otherwise issue an error
+ * and return. */
+ if (len > 0) {
+ current_buf += len;
+ total_len += len;
+ } else {
+ dev_err(&data->fc->dev, "Failed to build interrupt_enable buffer, code = %d.\n",
+ len);
+ return snprintf(local_buf, size, "unknown\n");
+ }
+ }
+ len = snprintf(current_buf, size - total_len, "\n");
+ if (len > 0)
+ total_len += len;
+ else
+ dev_warn(&data->fc->dev, "%s: Failed to append carriage return.\n",
+ __func__);
+
+ if (copy_to_user(buffer, local_buf, total_len))
+ return -EFAULT;
+
+ return total_len;
+}
+
+static ssize_t interrupt_enable_write(struct file *filp,
+ const char __user *buffer, size_t size, loff_t *offset) {
+ int retval;
+ char buf[size];
+ char *local_buf = buf;
+ int i;
+ int irq_count = 0;
+ int irq_reg = 0;
+ struct f01_debugfs_data *data = filp->private_data;
+ struct f01_data *f01 = data->fc->data;
+
+ retval = copy_from_user(buf, buffer, size);
+ if (retval)
+ return -EFAULT;
+
+ for (i = 0; i < f01->irq_count && *local_buf != 0;
+ i++, local_buf += 2) {
+ int irq_shift;
+ int interrupt_enable;
+ int result;
+
+ irq_reg = i / 8;
+ irq_shift = i % 8;
+
+ /* get next interrupt mapping value and store and bump up to
+ * point to next item in local_buf */
+ result = sscanf(local_buf, "%u", &interrupt_enable);
+ if ((result != 1) ||
+ (interrupt_enable != 0 && interrupt_enable != 1)) {
+ dev_err(&data->fc->dev, "Interrupt enable[%d] is not a valid value 0x%x.\n",
+ i, interrupt_enable);
+ return -EINVAL;
+ }
+ if (interrupt_enable == 0) {
+ f01->device_control.interrupt_enable[irq_reg] &=
+ (1 << irq_shift) ^ 0xFF;
+ } else
+ f01->device_control.interrupt_enable[irq_reg] |=
+ (1 << irq_shift);
+ irq_count++;
+ }
+
+ /* Make sure the irq count matches */
+ if (irq_count != f01->irq_count) {
+ dev_err(&data->fc->dev, "Interrupt enable count of %d doesn't match device count of %d.\n",
+ irq_count, f01->irq_count);
+ return -EINVAL;
+ }
+
+ /* write back to the control register */
+ retval = rmi_write_block(data->fc->rmi_dev, f01->interrupt_enable_addr,
+ f01->device_control.interrupt_enable,
+ f01->num_of_irq_regs);
+ if (retval < 0) {
+ dev_err(&data->fc->dev, "Could not write interrupt_enable mask to %#06x\n",
+ f01->interrupt_enable_addr);
+ return retval;
+ }
+
+ return size;
+}
+
+static const struct file_operations interrupt_enable_fops = {
+ .owner = THIS_MODULE,
+ .open = f01_debug_open,
+ .read = interrupt_enable_read,
+ .write = interrupt_enable_write,
+};
+
+static int setup_debugfs(struct rmi_function_container *fc)
+{
+ struct f01_data *data = fc->data;
+
+ if (!fc->debugfs_root)
+ return -ENODEV;
+
+ data->debugfs_interrupt_enable = debugfs_create_file("interrupt_enable",
+ RMI_RW_ATTR, fc->debugfs_root, fc, &interrupt_enable_fops);
+ if (!data->debugfs_interrupt_enable)
+ dev_warn(&fc->dev,
+ "Failed to create debugfs interrupt_enable.\n");
+
+ return 0;
+}
+
+static void teardown_debugfs(struct f01_data *f01)
+{
+ if (f01->debugfs_interrupt_enable)
+ debugfs_remove(f01->debugfs_interrupt_enable);
+}
+#endif
+
+
+static ssize_t rmi_fn_01_productinfo_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_productid_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_manufacturer_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_datecode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_reportrate_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_reportrate_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static ssize_t rmi_fn_01_interrupt_enable_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_doze_interval_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_doze_interval_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static ssize_t rmi_fn_01_wakeup_threshold_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_wakeup_threshold_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static ssize_t rmi_fn_01_doze_holdoff_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_doze_holdoff_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static ssize_t rmi_fn_01_reset_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static ssize_t rmi_fn_01_sleepmode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_sleepmode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static ssize_t rmi_fn_01_nosleep_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_nosleep_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static ssize_t rmi_fn_01_chargerinput_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_chargerinput_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static ssize_t rmi_fn_01_configured_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_unconfigured_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_flashprog_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static ssize_t rmi_fn_01_statuscode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf);
+
+static int rmi_f01_alloc_memory(struct rmi_function_container *fc,
+ int num_of_irq_regs);
+
+static int rmi_f01_initialize(struct rmi_function_container *fc);
+
+static int rmi_f01_create_sysfs(struct rmi_function_container *fc);
+
+static int rmi_f01_config(struct rmi_function_container *fc);
+
+
+static struct device_attribute fn_01_attrs[] = {
+ __ATTR(productinfo, RMI_RO_ATTR,
+ rmi_fn_01_productinfo_show, rmi_store_error),
+ __ATTR(productid, RMI_RO_ATTR,
+ rmi_fn_01_productid_show, rmi_store_error),
+ __ATTR(manufacturer, RMI_RO_ATTR,
+ rmi_fn_01_manufacturer_show, rmi_store_error),
+ __ATTR(datecode, RMI_RO_ATTR,
+ rmi_fn_01_datecode_show, rmi_store_error),
+
+ /* control register access */
+ __ATTR(sleepmode, RMI_RW_ATTR,
+ rmi_fn_01_sleepmode_show, rmi_fn_01_sleepmode_store),
+ __ATTR(nosleep, RMI_RW_ATTR,
+ rmi_fn_01_nosleep_show, rmi_fn_01_nosleep_store),
+ __ATTR(chargerinput, RMI_RW_ATTR,
+ rmi_fn_01_chargerinput_show, rmi_fn_01_chargerinput_store),
+ __ATTR(reportrate, RMI_RW_ATTR,
+ rmi_fn_01_reportrate_show, rmi_fn_01_reportrate_store),
+ /* We don't want arbitrary callers changing the interrupt enable mask,
+ * so it's read only.
+ */
+ __ATTR(interrupt_enable, RMI_RO_ATTR,
+ rmi_fn_01_interrupt_enable_show, rmi_store_error),
+ __ATTR(doze_interval, RMI_RW_ATTR,
+ rmi_fn_01_doze_interval_show, rmi_fn_01_doze_interval_store),
+ __ATTR(wakeup_threshold, RMI_RW_ATTR,
+ rmi_fn_01_wakeup_threshold_show,
+ rmi_fn_01_wakeup_threshold_store),
+ __ATTR(doze_holdoff, RMI_RW_ATTR,
+ rmi_fn_01_doze_holdoff_show, rmi_fn_01_doze_holdoff_store),
+
+ /* We make report rate RO, since the driver uses that to look for
+ * resets. We don't want someone faking us out by changing that
+ * bit.
+ */
+ __ATTR(configured, RMI_RO_ATTR,
+ rmi_fn_01_configured_show, rmi_store_error),
+
+ /* Command register access. */
+ __ATTR(reset, RMI_WO_ATTR,
+ rmi_show_error, rmi_fn_01_reset_store),
+
+ /* STatus register access. */
+ __ATTR(unconfigured, RMI_RO_ATTR,
+ rmi_fn_01_unconfigured_show, rmi_store_error),
+ __ATTR(flashprog, RMI_RO_ATTR,
+ rmi_fn_01_flashprog_show, rmi_store_error),
+ __ATTR(statuscode, RMI_RO_ATTR,
+ rmi_fn_01_statuscode_show, rmi_store_error),
+};
+
+/* Utility routine to set the value of a bit field in a register. */
+int rmi_mask_and_set(struct rmi_device *rmi_dev,
+ u16 address,
+ u8 mask,
+ u8 set)
+{
+ u8 reg_contents;
+ int retval;
+
+ retval = rmi_read(rmi_dev, address, ®_contents);
+ if (retval < 0)
+ return retval;
+ reg_contents = (reg_contents & ~mask) | set;
+ retval = rmi_write(rmi_dev, address, reg_contents);
+ if (retval == 1)
+ return 0;
+ else if (retval == 0)
+ return -EIO;
+ return retval;
+}
+
+static ssize_t rmi_fn_01_productinfo_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "0x%02x 0x%02x\n",
+ data->basic_queries.productinfo_1,
+ data->basic_queries.productinfo_2);
+}
+
+static ssize_t rmi_fn_01_productid_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%s\n", data->product_id);
+}
+
+static ssize_t rmi_fn_01_manufacturer_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "0x%02x\n",
+ data->basic_queries.manufacturer_id);
+}
+
+static ssize_t rmi_fn_01_datecode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "20%02u-%02u-%02u\n",
+ data->basic_queries.year,
+ data->basic_queries.month,
+ data->basic_queries.day);
+}
+
+static ssize_t rmi_fn_01_reset_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rmi_function_container *fc = NULL;
+ unsigned int reset;
+ int retval = 0;
+ /* Command register always reads as 0, so we can just use a local. */
+ union f01_device_commands commands = {};
+
+ fc = to_rmi_function_container(dev);
+
+ if (sscanf(buf, "%u", &reset) != 1)
+ return -EINVAL;
+ if (reset < 0 || reset > 1)
+ return -EINVAL;
+
+ /* Per spec, 0 has no effect, so we skip it entirely. */
+ if (reset) {
+ commands.reset = 1;
+ retval = rmi_write_block(fc->rmi_dev, fc->fd.command_base_addr,
+ &commands.reg, sizeof(commands.reg));
+ if (retval < 0) {
+ dev_err(dev, "Failed to issue reset command, code = %d.",
+ retval);
+ return retval;
+ }
+ }
+
+ return count;
+}
+
+static ssize_t rmi_fn_01_sleepmode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE,
+ "%d\n", data->device_control.ctrl0.sleep_mode);
+}
+
+static ssize_t rmi_fn_01_sleepmode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct f01_data *data = NULL;
+ unsigned long new_value;
+ int retval;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ retval = strict_strtoul(buf, 10, &new_value);
+ if (retval < 0 || !RMI_IS_VALID_SLEEPMODE(new_value)) {
+ dev_err(dev, "%s: Invalid sleep mode %s.", __func__, buf);
+ return -EINVAL;
+ }
+
+ dev_dbg(dev, "Setting sleep mode to %ld.", new_value);
+ data->device_control.ctrl0.sleep_mode = new_value;
+ retval = rmi_write_block(fc->rmi_dev, fc->fd.control_base_addr,
+ data->device_control.ctrl0.regs,
+ ARRAY_SIZE(data->device_control.ctrl0.regs));
+ if (retval >= 0)
+ retval = count;
+ else
+ dev_err(dev, "Failed to write sleep mode, code %d.\n", retval);
+ return retval;
+}
+
+static ssize_t rmi_fn_01_nosleep_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ data->device_control.ctrl0.nosleep);
+}
+
+static ssize_t rmi_fn_01_nosleep_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct f01_data *data = NULL;
+ unsigned long new_value;
+ int retval;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ retval = strict_strtoul(buf, 10, &new_value);
+ if (retval < 0 || new_value < 0 || new_value > 1) {
+ dev_err(dev, "%s: Invalid nosleep bit %s.", __func__, buf);
+ return -EINVAL;
+ }
+
+ data->device_control.ctrl0.nosleep = new_value;
+ retval = rmi_write_block(fc->rmi_dev, fc->fd.control_base_addr,
+ data->device_control.ctrl0.regs,
+ ARRAY_SIZE(data->device_control.ctrl0.regs));
+ if (retval >= 0)
+ retval = count;
+ else
+ dev_err(dev, "Failed to write nosleep bit.\n");
+ return retval;
+}
+
+static ssize_t rmi_fn_01_chargerinput_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ data->device_control.ctrl0.charger_input);
+}
+
+static ssize_t rmi_fn_01_chargerinput_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct f01_data *data = NULL;
+ unsigned long new_value;
+ int retval;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ retval = strict_strtoul(buf, 10, &new_value);
+ if (retval < 0 || new_value < 0 || new_value > 1) {
+ dev_err(dev, "%s: Invalid chargerinput bit %s.", __func__, buf);
+ return -EINVAL;
+ }
+
+ data->device_control.ctrl0.charger_input = new_value;
+ retval = rmi_write_block(fc->rmi_dev, fc->fd.control_base_addr,
+ data->device_control.ctrl0.regs,
+ ARRAY_SIZE(data->device_control.ctrl0.regs));
+ if (retval >= 0)
+ retval = count;
+ else
+ dev_err(dev, "Failed to write chargerinput bit.\n");
+ return retval;
+}
+
+static ssize_t rmi_fn_01_reportrate_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ data->device_control.ctrl0.report_rate);
+}
+
+static ssize_t rmi_fn_01_reportrate_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct f01_data *data = NULL;
+ unsigned long new_value;
+ int retval;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ retval = strict_strtoul(buf, 10, &new_value);
+ if (retval < 0 || new_value < 0 || new_value > 1) {
+ dev_err(dev, "%s: Invalid reportrate bit %s.", __func__, buf);
+ return -EINVAL;
+ }
+
+ data->device_control.ctrl0.report_rate = new_value;
+ retval = rmi_write_block(fc->rmi_dev, fc->fd.control_base_addr,
+ data->device_control.ctrl0.regs,
+ ARRAY_SIZE(data->device_control.ctrl0.regs));
+ if (retval >= 0)
+ retval = count;
+ else
+ dev_err(dev, "Failed to write reportrate bit.\n");
+ return retval;
+}
+
+static ssize_t rmi_fn_01_interrupt_enable_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_container *fc;
+ struct f01_data *data;
+ int i, len, total_len = 0;
+ char *current_buf = buf;
+
+ fc = to_rmi_function_container(dev);
+ data = fc->data;
+ /* loop through each irq value and copy its
+ * string representation into buf */
+ for (i = 0; i < data->irq_count; i++) {
+ int irq_reg;
+ int irq_shift;
+ int interrupt_enable;
+
+ irq_reg = i / 8;
+ irq_shift = i % 8;
+ interrupt_enable =
+ ((data->device_control.interrupt_enable[irq_reg]
+ >> irq_shift) & 0x01);
+
+ /* get next irq value and write it to buf */
+ len = snprintf(current_buf, PAGE_SIZE - total_len,
+ "%u ", interrupt_enable);
+ /* bump up ptr to next location in buf if the
+ * snprintf was valid. Otherwise issue an error
+ * and return. */
+ if (len > 0) {
+ current_buf += len;
+ total_len += len;
+ } else {
+ dev_err(dev, "Failed to build interrupt_enable buffer, code = %d.\n",
+ len);
+ return snprintf(buf, PAGE_SIZE, "unknown\n");
+ }
+ }
+ len = snprintf(current_buf, PAGE_SIZE - total_len, "\n");
+ if (len > 0)
+ total_len += len;
+ else
+ dev_warn(dev, "%s: Failed to append carriage return.\n",
+ __func__);
+ return total_len;
+
+}
+
+static ssize_t rmi_fn_01_doze_interval_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ data->device_control.doze_interval);
+
+}
+
+static ssize_t rmi_fn_01_doze_interval_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct f01_data *data = NULL;
+ unsigned long new_value;
+ int retval;
+ u16 ctrl_base_addr;
+
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ retval = strict_strtoul(buf, 10, &new_value);
+ if (retval < 0 || new_value < 0 || new_value > 255) {
+ dev_err(dev, "%s: Invalid doze interval %s.", __func__, buf);
+ return -EINVAL;
+ }
+
+ data->device_control.doze_interval = new_value;
+ ctrl_base_addr = fc->fd.control_base_addr + sizeof(u8) +
+ (sizeof(u8)*(data->num_of_irq_regs));
+ dev_dbg(dev, "doze_interval store address %x, value %d",
+ ctrl_base_addr, data->device_control.doze_interval);
+
+ retval = rmi_write_block(fc->rmi_dev, data->doze_interval_addr,
+ &data->device_control.doze_interval,
+ sizeof(u8));
+ if (retval >= 0)
+ retval = count;
+ else
+ dev_err(dev, "Failed to write doze interval.\n");
+ return retval;
+
+}
+
+static ssize_t rmi_fn_01_wakeup_threshold_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ data->device_control.wakeup_threshold);
+}
+
+static ssize_t rmi_fn_01_wakeup_threshold_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct f01_data *data = NULL;
+ unsigned long new_value;
+ int retval;
+
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ retval = strict_strtoul(buf, 10, &new_value);
+ if (retval < 0 || new_value < 0 || new_value > 255) {
+ dev_err(dev, "%s: Invalid wakeup threshold %s.", __func__, buf);
+ return -EINVAL;
+ }
+
+ data->device_control.doze_interval = new_value;
+ retval = rmi_write_block(fc->rmi_dev, data->wakeup_threshold_addr,
+ &data->device_control.wakeup_threshold,
+ sizeof(u8));
+ if (retval >= 0)
+ retval = count;
+ else
+ dev_err(dev, "Failed to write wakeup threshold.\n");
+ return retval;
+
+}
+
+static ssize_t rmi_fn_01_doze_holdoff_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ data->device_control.doze_holdoff);
+
+}
+
+
+static ssize_t rmi_fn_01_doze_holdoff_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct f01_data *data = NULL;
+ unsigned long new_value;
+ int retval;
+
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ retval = strict_strtoul(buf, 10, &new_value);
+ if (retval < 0 || new_value < 0 || new_value > 255) {
+ dev_err(dev, "%s: Invalid doze holdoff %s.", __func__, buf);
+ return -EINVAL;
+ }
+
+ data->device_control.doze_interval = new_value;
+ retval = rmi_write_block(fc->rmi_dev, data->doze_holdoff_addr,
+ &data->device_control.doze_holdoff,
+ sizeof(u8));
+ if (retval >= 0)
+ retval = count;
+ else
+ dev_err(dev, "Failed to write doze holdoff.\n");
+ return retval;
+
+}
+
+static ssize_t rmi_fn_01_configured_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ data->device_control.ctrl0.configured);
+}
+
+static ssize_t rmi_fn_01_unconfigured_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ data->device_status.unconfigured);
+}
+
+static ssize_t rmi_fn_01_flashprog_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ data->device_status.flash_prog);
+}
+
+static ssize_t rmi_fn_01_statuscode_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct f01_data *data = NULL;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ data = fc->data;
+
+ return snprintf(buf, PAGE_SIZE, "0x%02x\n",
+ data->device_status.status_code);
+}
+
+static int f01_device_init(struct rmi_function_container *fc)
+{
+ struct rmi_driver_data *driver_data =
+ dev_get_drvdata(&fc->rmi_dev->dev);
+ int error;
+
+ error = rmi_f01_alloc_memory(fc, driver_data->num_of_irq_regs);
+ if (error < 0)
+ return error;
+
+ error = rmi_f01_initialize(fc);
+ if (error < 0)
+ return error;
+
+ error = rmi_f01_create_sysfs(fc);
+ if (error < 0)
+ return error;
+
+ return 0;
+}
+
+static int rmi_f01_alloc_memory(struct rmi_function_container *fc,
+ int num_of_irq_regs)
+{
+ struct f01_data *f01;
+
+ f01 = devm_kzalloc(&fc->dev, sizeof(struct f01_data), GFP_KERNEL);
+ if (!f01) {
+ dev_err(&fc->dev, "Failed to allocate fn_01_data.\n");
+ return -ENOMEM;
+ }
+
+ f01->device_control.interrupt_enable = devm_kzalloc(&fc->dev,
+ sizeof(u8)*(num_of_irq_regs),
+ GFP_KERNEL);
+ if (!f01->device_control.interrupt_enable) {
+ dev_err(&fc->dev, "Failed to allocate interrupt enable.\n");
+ return -ENOMEM;
+ }
+ fc->data = f01;
+
+ return 0;
+}
+
+static int rmi_f01_initialize(struct rmi_function_container *fc)
+{
+ u8 temp;
+ int retval;
+ u16 ctrl_base_addr;
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+ struct rmi_driver_data *driver_data = dev_get_drvdata(&rmi_dev->dev);
+ struct f01_data *data = fc->data;
+ struct rmi_device_platform_data *pdata = to_rmi_platform_data(rmi_dev);
+
+ /* Set the configured bit and (optionally) other important stuff
+ * in the device control register. */
+ ctrl_base_addr = fc->fd.control_base_addr;
+ retval = rmi_read_block(rmi_dev, fc->fd.control_base_addr,
+ data->device_control.ctrl0.regs,
+ ARRAY_SIZE(data->device_control.ctrl0.regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to read F01 control.\n");
+ return retval;
+ }
+ switch (pdata->power_management.nosleep) {
+ case RMI_F01_NOSLEEP_DEFAULT:
+ break;
+ case RMI_F01_NOSLEEP_OFF:
+ data->device_control.ctrl0.nosleep = 0;
+ break;
+ case RMI_F01_NOSLEEP_ON:
+ data->device_control.ctrl0.nosleep = 1;
+ break;
+ }
+ /* Sleep mode might be set as a hangover from a system crash or
+ * reboot without power cycle. If so, clear it so the sensor
+ * is certain to function.
+ */
+ if (data->device_control.ctrl0.sleep_mode != RMI_SLEEP_MODE_NORMAL) {
+ dev_warn(&fc->dev,
+ "WARNING: Non-zero sleep mode found. Clearing...\n");
+ data->device_control.ctrl0.sleep_mode = RMI_SLEEP_MODE_NORMAL;
+ }
+
+ data->device_control.ctrl0.configured = 1;
+ retval = rmi_write_block(rmi_dev, fc->fd.control_base_addr,
+ data->device_control.ctrl0.regs,
+ ARRAY_SIZE(data->device_control.ctrl0.regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to write F01 control.\n");
+ return retval;
+ }
+
+ data->irq_count = driver_data->irq_count;
+ data->num_of_irq_regs = driver_data->num_of_irq_regs;
+ ctrl_base_addr += sizeof(union f01_device_control_0);
+
+ data->interrupt_enable_addr = ctrl_base_addr;
+ retval = rmi_read_block(rmi_dev, ctrl_base_addr,
+ data->device_control.interrupt_enable,
+ sizeof(u8)*(driver_data->num_of_irq_regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to read F01 control interrupt enable register.\n");
+ goto error_exit;
+ }
+ ctrl_base_addr += driver_data->num_of_irq_regs;
+
+ /* dummy read in order to clear irqs */
+ retval = rmi_read(rmi_dev, fc->fd.data_base_addr + 1, &temp);
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to read Interrupt Status.\n");
+ return retval;
+ }
+
+ retval = rmi_read_block(rmi_dev, fc->fd.query_base_addr,
+ data->basic_queries.regs,
+ sizeof(data->basic_queries.regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to read device query registers.\n");
+ return retval;
+ }
+
+ retval = rmi_read_block(rmi_dev,
+ fc->fd.query_base_addr + sizeof(data->basic_queries.regs),
+ data->product_id, RMI_PRODUCT_ID_LENGTH);
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to read product ID.\n");
+ return retval;
+ }
+ data->product_id[RMI_PRODUCT_ID_LENGTH] = '\0';
+ dev_info(&fc->dev, "found RMI device, manufacturer: %s, product: %s\n",
+ data->basic_queries.manufacturer_id == 1 ?
+ "synaptics" : "unknown",
+ data->product_id);
+
+ /* read control register */
+ if (data->basic_queries.has_adjustable_doze) {
+ data->doze_interval_addr = ctrl_base_addr;
+ ctrl_base_addr++;
+
+ if (pdata->power_management.doze_interval) {
+ data->device_control.doze_interval =
+ pdata->power_management.doze_interval;
+ retval = rmi_write(rmi_dev, data->doze_interval_addr,
+ data->device_control.doze_interval);
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to configure F01 doze interval register.\n");
+ goto error_exit;
+ }
+ } else {
+ retval = rmi_read(rmi_dev, data->doze_interval_addr,
+ &data->device_control.doze_interval);
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to read F01 doze interval register.\n");
+ goto error_exit;
+ }
+ }
+
+ data->wakeup_threshold_addr = ctrl_base_addr;
+ ctrl_base_addr++;
+
+ if (pdata->power_management.wakeup_threshold) {
+ data->device_control.wakeup_threshold =
+ pdata->power_management.wakeup_threshold;
+ retval = rmi_write(rmi_dev, data->wakeup_threshold_addr,
+ data->device_control.wakeup_threshold);
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to configure F01 wakeup threshold register.\n");
+ goto error_exit;
+ }
+ } else {
+ retval = rmi_read(rmi_dev, data->wakeup_threshold_addr,
+ &data->device_control.wakeup_threshold);
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to read F01 wakeup threshold register.\n");
+ goto error_exit;
+ }
+ }
+ }
+
+ if (data->basic_queries.has_adjustable_doze_holdoff) {
+ data->doze_holdoff_addr = ctrl_base_addr;
+ ctrl_base_addr++;
+
+ if (pdata->power_management.doze_holdoff) {
+ data->device_control.doze_holdoff =
+ pdata->power_management.doze_holdoff;
+ retval = rmi_write(rmi_dev, data->doze_holdoff_addr,
+ data->device_control.doze_holdoff);
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to configure F01 doze holdoff register.\n");
+ goto error_exit;
+ }
+ } else {
+ retval = rmi_read(rmi_dev, data->doze_holdoff_addr,
+ &data->device_control.doze_holdoff);
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to read F01 doze holdoff register.\n");
+ goto error_exit;
+ }
+ }
+ }
+
+ retval = rmi_read_block(rmi_dev, fc->fd.data_base_addr,
+ data->device_status.regs, ARRAY_SIZE(data->device_status.regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to read device status.\n");
+ goto error_exit;
+ }
+
+ if (data->device_status.unconfigured) {
+ dev_err(&fc->dev, "Device reset during configuration process, status: %#02x!\n",
+ data->device_status.status_code);
+ retval = -EINVAL;
+ goto error_exit;
+ }
+
+ if (IS_ENABLED(CONFIG_RMI4_DEBUG)) {
+ retval = setup_debugfs(fc);
+ if (retval < 0)
+ dev_warn(&fc->dev, "Failed to setup debugfs. Code: %d.\n",
+ retval);
+ }
+
+ return retval;
+
+ error_exit:
+ kfree(data);
+ return retval;
+}
+
+static int rmi_f01_create_sysfs(struct rmi_function_container *fc)
+{
+ int attr_count = 0;
+ int retval = 0;
+ struct f01_data *data = fc->data;
+
+ dev_dbg(&fc->dev, "Creating sysfs files.");
+ for (attr_count = 0; attr_count < ARRAY_SIZE(fn_01_attrs);
+ attr_count++) {
+ if (!strcmp("doze_interval", fn_01_attrs[attr_count].attr.name)
+ && !data->basic_queries.has_lts) {
+ continue;
+ }
+ if (!strcmp("wakeup_threshold",
+ fn_01_attrs[attr_count].attr.name)
+ && !data->basic_queries.has_adjustable_doze) {
+ continue;
+ }
+ if (!strcmp("doze_holdoff", fn_01_attrs[attr_count].attr.name)
+ && !data->basic_queries.has_adjustable_doze_holdoff) {
+ continue;
+ }
+ retval = sysfs_create_file(&fc->dev.kobj,
+ &fn_01_attrs[attr_count].attr);
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to create sysfs file for %s.",
+ fn_01_attrs[attr_count].attr.name);
+ goto err_remove_sysfs;
+ }
+ }
+
+ return 0;
+
+err_remove_sysfs:
+ for (attr_count--; attr_count >= 0; attr_count--)
+ sysfs_remove_file(&fc->dev.kobj,
+ &fn_01_attrs[attr_count].attr);
+
+ return retval;
+}
+
+static int rmi_f01_config(struct rmi_function_container *fc)
+{
+ struct f01_data *data = fc->data;
+ int retval;
+
+ retval = rmi_write_block(fc->rmi_dev, fc->fd.control_base_addr,
+ data->device_control.ctrl0.regs,
+ ARRAY_SIZE(data->device_control.ctrl0.regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to write device_control.reg.\n");
+ return retval;
+ }
+
+ retval = rmi_write_block(fc->rmi_dev, data->interrupt_enable_addr,
+ data->device_control.interrupt_enable,
+ sizeof(u8)*(data->num_of_irq_regs));
+
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to write interrupt enable.\n");
+ return retval;
+ }
+ if (data->basic_queries.has_lts) {
+ retval = rmi_write_block(fc->rmi_dev, data->doze_interval_addr,
+ &data->device_control.doze_interval,
+ sizeof(u8));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to write doze interval.\n");
+ return retval;
+ }
+ }
+
+ if (data->basic_queries.has_adjustable_doze) {
+ retval = rmi_write_block(
+ fc->rmi_dev, data->wakeup_threshold_addr,
+ &data->device_control.wakeup_threshold,
+ sizeof(u8));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to write wakeup threshold.\n");
+ return retval;
+ }
+ }
+
+ if (data->basic_queries.has_adjustable_doze_holdoff) {
+ retval = rmi_write_block(fc->rmi_dev, data->doze_holdoff_addr,
+ &data->device_control.doze_holdoff,
+ sizeof(u8));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to write doze holdoff.\n");
+ return retval;
+ }
+ }
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int rmi_f01_suspend(struct rmi_function_container *fc)
+{
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+ struct rmi_driver_data *driver_data = dev_get_drvdata(&rmi_dev->dev);
+ struct f01_data *data = driver_data->f01_container->data;
+ int retval = 0;
+
+ if (data->suspended)
+ return 0;
+
+ data->old_nosleep = data->device_control.ctrl0.nosleep;
+ data->device_control.ctrl0.nosleep = 0;
+ data->device_control.ctrl0.sleep_mode = RMI_SLEEP_MODE_SENSOR_SLEEP;
+
+ retval = rmi_write_block(rmi_dev,
+ driver_data->f01_container->fd.control_base_addr,
+ data->device_control.ctrl0.regs,
+ ARRAY_SIZE(data->device_control.ctrl0.regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to write sleep mode. Code: %d.\n",
+ retval);
+ data->device_control.ctrl0.nosleep = data->old_nosleep;
+ data->device_control.ctrl0.sleep_mode = RMI_SLEEP_MODE_NORMAL;
+ } else {
+ data->suspended = true;
+ retval = 0;
+ }
+
+ return retval;
+}
+
+static int rmi_f01_resume(struct rmi_function_container *fc)
+{
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+ struct rmi_driver_data *driver_data = dev_get_drvdata(&rmi_dev->dev);
+ struct f01_data *data = driver_data->f01_container->data;
+ int retval = 0;
+
+ if (!data->suspended)
+ return 0;
+
+ data->device_control.ctrl0.nosleep = data->old_nosleep;
+ data->device_control.ctrl0.sleep_mode = RMI_SLEEP_MODE_NORMAL;
+
+ retval = rmi_write_block(rmi_dev,
+ driver_data->f01_container->fd.control_base_addr,
+ data->device_control.ctrl0.regs,
+ ARRAY_SIZE(data->device_control.ctrl0.regs));
+ if (retval < 0)
+ dev_err(&fc->dev,
+ "Failed to restore normal operation. Code: %d.\n",
+ retval);
+ else {
+ data->suspended = false;
+ retval = 0;
+ }
+
+ return retval;
+}
+#endif /* CONFIG_PM */
+
+static int f01_remove_device(struct device *dev)
+{
+ int attr_count;
+ struct rmi_function_container *fc = to_rmi_function_container(dev);
+
+ if (IS_ENABLED(CONFIG_RMI4_DEBUG))
+ teardown_debugfs(fc->data);
+
+ for (attr_count = 0; attr_count < ARRAY_SIZE(fn_01_attrs);
+ attr_count++) {
+ sysfs_remove_file(&fc->dev.kobj, &fn_01_attrs[attr_count].attr);
+ }
+ return 0;
+}
+
+static int rmi_f01_attention(struct rmi_function_container *fc, u8 *irq_bits)
+{
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+ struct f01_data *data = fc->data;
+ int retval;
+
+ retval = rmi_read_block(rmi_dev, fc->fd.data_base_addr,
+ data->device_status.regs, ARRAY_SIZE(data->device_status.regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Failed to read device status, code: %d.\n",
+ retval);
+ return retval;
+ }
+ if (data->device_status.unconfigured) {
+ dev_warn(&fc->dev, "Device reset detected.\n");
+ retval = rmi_dev->driver->reset_handler(rmi_dev);
+ if (retval < 0)
+ return retval;
+ }
+ return 0;
+}
+
+static int f01_probe(struct device *dev);
+
+static struct rmi_function_handler function_handler = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "rmi_f01",
+ .bus = &rmi_bus_type,
+ .probe = f01_probe,
+ .remove = f01_remove_device,
+ },
+ .func = 0x01,
+ .config = rmi_f01_config,
+ .attention = rmi_f01_attention,
+
+#ifdef CONFIG_PM
+ .suspend = rmi_f01_suspend,
+ .resume = rmi_f01_resume,
+#endif /* CONFIG_PM */
+};
+
+static __devinit int f01_probe(struct device *dev)
+{
+ struct rmi_function_container *fc;
+
+ if (dev->type != &rmi_function_type) {
+ dev_dbg(dev, "Not a function device.\n");
+ return 1;
+ }
+ fc = to_rmi_function_container(dev);
+ if (fc->fd.function_number != function_handler.func) {
+ dev_dbg(dev, "Device is F%02X, not F%02X.\n",
+ fc->fd.function_number, function_handler.func);
+ return 1;
+ }
+
+ dev_dbg(dev, "Yay! It is F01!\n");
+ return f01_device_init(fc);
+}
+
+static int __init rmi_f01_module_init(void)
+{
+ int error;
+
+ error = driver_register(&function_handler.driver);
+ if (error < 0) {
+ pr_err("%s: register failed!\n", __func__);
+ return error;
+ }
+
+ return 0;
+}
+
+static void __exit rmi_f01_module_exit(void)
+{
+ driver_unregister(&function_handler.driver);
+}
+
+module_init(rmi_f01_module_init);
+module_exit(rmi_f01_module_exit);
+
+MODULE_AUTHOR("Christopher Heiny <cheiny@xxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("RMI F01 module");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(RMI_DRIVER_VERSION);
diff --git a/drivers/input/rmi4/rmi_f01.h b/drivers/input/rmi4/rmi_f01.h
new file mode 100644
index 0000000..34db09f
--- /dev/null
+++ b/drivers/input/rmi4/rmi_f01.h
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2012 Synaptics Incorporated
+ *
+ * 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.
+ */
+
+
+#ifndef _RMI_F01_H
+#define _RMI_F01_H
+
+#define RMI_PRODUCT_ID_LENGTH 10
+
+/**
+ * @manufacturer_id - reports the identity of the manufacturer of the RMI
+ * device. Synaptics RMI devices report a Manufacturer ID of $01.
+ * @custom_map - at least one custom, non
+ * RMI-compatible register exists in the register address map for this device.
+ * @non-compliant - the device implements a register map that is not compliant
+ * with the RMI specification.
+ * @has_lts - the device uses Synaptics' LTS hardware architecture.
+ * @has_sensor_id - the SensorID query register (F01_RMI_Query22) exists.
+ * @has_charger_input - the ChargerConnected bit (F01_RMI_Ctrl0, bit 5) is
+ * meaningful.
+ * @has_adjustable_doze - the doze (power management) control registers exist.
+ * @has_adjustable_doze_holdoff - the doze holdoff register exists.
+ * @has_product_properties - indicates the presence of F01_RMI_Query42,
+ * ProductProperties2.
+ * @productinfo_1 - meaning varies from product to product, consult your
+ * product spec sheet.
+ * @productinfo_2 - meaning varies from product to product, consult your
+ * product spec sheet.
+ * @year - year of manufacture MOD 2000.
+ * @month - month of manufacture
+ * @day - day of manufacture
+ * @wafer_id1_lsb - The wafer-lot ID registers record the lot number of the
+ * wafer from which the module’s touch controller was produced.
+ * @wafer_id1_msb - The wafer-lot ID registers record the lot number of the
+ * wafer from which the module’s touch controller was produced.
+ * @wafer_id2_lsb - The wafer-lot ID registers record the lot number of the
+ * wafer from which the module’s touch controller was produced.
+ * @wafer_id2_msb - The wafer-lot ID registers record the lot number of the
+ * wafer from which the module’s touch controller was produced.
+ * @wafer_id3_lsb - The wafer-lot ID registers record the lot number of the
+ * wafer from which the module’s touch controller was produced.
+ */
+union f01_basic_queries {
+ struct {
+ u8 manufacturer_id:8;
+
+ bool custom_map:1;
+ bool non_compliant:1;
+ bool has_lts:1;
+ bool has_sensor_id:1;
+ bool has_charger_input:1;
+ bool has_adjustable_doze:1;
+ bool has_adjustable_doze_holdoff:1;
+ bool has_product_properties_2:1;
+
+ u8 productinfo_1:7;
+ bool q2_bit_7:1;
+ u8 productinfo_2:7;
+ bool q3_bit_7:1;
+
+ u8 year:5;
+ u8 month:4;
+ u8 day:5;
+ bool cp1:1;
+ bool cp2:1;
+ u8 wafer_id1_lsb:8;
+ u8 wafer_id1_msb:8;
+ u8 wafer_id2_lsb:8;
+ u8 wafer_id2_msb:8;
+ u8 wafer_id3_lsb:8;
+ } __attribute__((__packed__));
+ u8 regs[11];
+};
+
+union f01_device_status {
+ struct {
+ u8 status_code:4;
+ u8 reserved:2;
+ bool flash_prog:1;
+ bool unconfigured:1;
+ } __attribute__((__packed__));
+ u8 regs[1];
+};
+
+/* control register bits */
+#define RMI_SLEEP_MODE_NORMAL (0x00)
+#define RMI_SLEEP_MODE_SENSOR_SLEEP (0x01)
+#define RMI_SLEEP_MODE_RESERVED0 (0x02)
+#define RMI_SLEEP_MODE_RESERVED1 (0x03)
+
+#define RMI_IS_VALID_SLEEPMODE(mode) \
+ (mode >= RMI_SLEEP_MODE_NORMAL && mode <= RMI_SLEEP_MODE_RESERVED1)
+
+/**
+ * @sleep_mode - This field controls power management on the device. This
+ * field affects all functions of the device together.
+ * @nosleep - When set to ‘1’, this bit disables whatever sleep mode may be
+ * selected by the sleep_mode field,and forces the device to run at full power
+ * without sleeping.
+ * @charger_input - When this bit is set to ‘1’, the touch controller employs
+ * a noise-filtering algorithm designed for use with a connected battery
+ * charger.
+ * @report_rate - sets the report rate for the device. The effect of this
+ * setting is highly product dependent. Check the spec sheet for your
+ * particular touch sensor.
+ * @configured - written by the host as an indicator that the device has been
+ * successfuly configured.
+ */
+union f01_device_control_0 {
+ struct {
+ u8 sleep_mode:2;
+ bool nosleep:1;
+ u8 reserved:2;
+ bool charger_input:1;
+ bool report_rate:1;
+ bool configured:1;
+ } __attribute__((__packed__));
+ u8 regs[1];
+};
+
+#endif
--
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