| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1345241877-16200-17-git-send-email-cheiny@synaptics.com>
Date: Fri, 17 Aug 2012 15:17:56 -0700
From: Christopher Heiny <cheiny@...aptics.com>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: Jean Delvare <khali@...ux-fr.org>,
Linux Kernel <linux-kernel@...r.kernel.org>,
Linux Input <linux-input@...r.kernel.org>,
Christopher Heiny <cheiny@...aptics.com>,
Allie Xiong <axiong@...aptics.com>,
William Manson <wmanson@...aptics.com>,
Peichen Chang <peichen.chang@...aptics.com>,
Joerie de Gram <j.de.gram@...il.com>,
Wolfram Sang <w.sang@...gutronix.de>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Linus Walleij <linus.walleij@...ricsson.com>,
Naveen Kumar Gaddipati <naveen.gaddipati@...ricsson.com>
Subject: [RFC PATCH 16/17] input: RMI4 F41 Active pen 2D input
Signed-off-by: Christopher Heiny <cheiny@...aptics.com>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: Linus Walleij <linus.walleij@...ricsson.com>
Cc: Naveen Kumar Gaddipati <naveen.gaddipati@...ricsson.com>
Cc: Joeri de Gram <j.de.gram@...il.com>
Acked-by: Jean Delvare <khali@...ux-fr.org>
---
drivers/input/rmi4/rmi_f41.c | 1020 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 1020 insertions(+), 0 deletions(-)
diff --git a/drivers/input/rmi4/rmi_f41.c b/drivers/input/rmi4/rmi_f41.c
new file mode 100644
index 0000000..1bac4e3
--- /dev/null
+++ b/drivers/input/rmi4/rmi_f41.c
@@ -0,0 +1,1020 @@
+/*
+ * 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.
+ */
+
+#define FUNCTION_DATA rmi_fn_41_data
+#define FNUM 41
+
+
+#include <linux/kernel.h>
+#include <linux/rmi.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include "rmi_driver.h"
+
+#define MAX_STR_LEN 256
+
+union f41_ap_query {
+ struct {
+ /* Query 0 */
+ u8 has_reduced_reporting:1;
+ u8 has_modal_control:1;
+ u8 has_force:1;
+ u8 has_orientation:1;
+ u8 has_serial_number:1;
+ u8 has_battery:1;
+ u8 has_z:1;
+ u8 has_single_tap:1;
+
+ /* Query 1 */
+ u8 number_of_buttons:3;
+ u8 f41_ap_query1_b3__7:5;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[2];
+ u16 address;
+ } __attribute__((__packed__));
+};
+
+
+union f41_ap_control_0 {
+ struct {
+ /* control 0 */
+ u8 reporting_mode:2;
+ u8 modal_ctrl:1;
+ u8 f41_ap_control0_b3__4:2;
+ u8 single_tap_interrupt_enable:1;
+ u8 in_range_interrupt_enable:1;
+ u8 new_sn_interrupt_enable:1;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[1];
+ u16 address;
+ } __attribute__((__packed__));
+};
+
+union f41_ap_control_1 {
+ struct {
+ /* control 1 */
+ u8 button_1_interrupt_enable:1;
+ u8 button_2_interrupt_enable:1;
+ u8 button_3_interrupt_enable:1;
+ u8 button_4_interrupt_enable:1;
+ u8 button_5_interrupt_enable:1;
+ u8 button_6_interrupt_enable:1;
+ u8 button_7_interrupt_enable:1;
+ u8 f41_ap_control1_b7:1;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[1];
+ u16 address;
+ } __attribute__((__packed__));
+};
+
+union f41_ap_control_2__5 {
+ struct {
+ u16 max_x_position;
+ u16 max_y_position;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[4];
+ u16 address;
+ } __attribute__((__packed__));
+};
+
+union f41_ap_control_6__9 {
+ struct {
+ u16 x_reduced_reporting_distance;
+ u16 y_reduced_reporting_distance;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[4];
+ u16 address;
+ } __attribute__((__packed__));
+};
+
+union f41_ap_control_10 {
+ struct {
+ u8 max_tap_time;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[1];
+ u16 address;
+ } __attribute__((__packed__));
+};
+
+struct f41_ap_control {
+ union f41_ap_control_0 *reg_0;
+ union f41_ap_control_1 *reg_1;
+ union f41_ap_control_2__5 *reg_2__5;
+ union f41_ap_control_6__9 *reg_6__9;
+ union f41_ap_control_10 *reg_10;
+};
+
+
+union f41_ap_data_0__3 {
+ struct {
+ /* data 0-1 */
+ u16 x_position;
+
+ /* data 2-3 */
+ u16 y_position;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[4];
+ } __attribute__((__packed__));
+};
+
+union f41_ap_data_4 {
+ struct {
+ /* data 4 */
+ u8 force;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[1];
+ } __attribute__((__packed__));
+};
+
+union f41_ap_data_5 {
+ struct {
+ /* data 5 */
+ u8 button_1_state:1;
+ u8 button_2_state:1;
+ u8 button_3_state:1;
+ u8 button_4_state:1;
+ u8 button_5_state:1;
+ u8 button_6_state:1;
+ u8 button_7_state:1;
+ u8 f41_ap_data_5_b7:1;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[1];
+ } __attribute__((__packed__));
+};
+
+union f41_ap_data_6 {
+ struct {
+ /* data 6 */
+ u8 single_tap:1;
+ u8 in_range:1;
+ u8 new_serial_number:1;
+ u8 f41_ap_data_6_b3__7:5;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[1];
+ } __attribute__((__packed__));
+};
+
+union f41_ap_data_7__8 {
+ struct {
+ /* data 7 */
+ u8 azimuth;
+
+ /* data 8 */
+ u8 altitude;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[2];
+ } __attribute__((__packed__));
+};
+
+union f41_ap_data_9 {
+ struct {
+ /* data 9 */
+ u8 z_position;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[1];
+ } __attribute__((__packed__));
+};
+
+union f41_ap_data_10 {
+ struct {
+ /* data 10 */
+ u8 battery_level;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[1];
+ } __attribute__((__packed__));
+};
+
+union f41_ap_data_11__14 {
+ struct {
+ /* data 11-14 */
+ u32 pen_serial_number;
+ } __attribute__((__packed__));
+ struct {
+ u8 regs[4];
+ } __attribute__((__packed__));
+};
+
+struct f41_ap_data {
+ union f41_ap_data_0__3 *reg_0__3;
+ union f41_ap_data_4 *reg_4;
+ union f41_ap_data_5 *reg_5;
+ union f41_ap_data_6 *reg_6;
+ union f41_ap_data_7__8 *reg_7__8;
+ union f41_ap_data_9 *reg_9;
+ union f41_ap_data_10 *reg_10;
+ union f41_ap_data_11__14 *reg_11__14;
+};
+
+/* Query */
+show_union_struct_prototype(has_reduced_reporting)
+show_union_struct_prototype(has_modal_control)
+show_union_struct_prototype(has_force)
+show_union_struct_prototype(has_orientation)
+show_union_struct_prototype(has_serial_number)
+show_union_struct_prototype(has_battery)
+show_union_struct_prototype(has_z)
+show_union_struct_prototype(has_single_tap)
+show_union_struct_prototype(number_of_buttons)
+
+static struct attribute *attrs_q[] = {
+ attrify(has_reduced_reporting),
+ attrify(has_modal_control),
+ attrify(has_force),
+ attrify(has_orientation),
+ attrify(has_serial_number),
+ attrify(has_battery),
+ attrify(has_z),
+ attrify(has_single_tap),
+ attrify(number_of_buttons),
+ NULL
+};
+static struct attribute_group attrs_query = GROUP(attrs_q);
+
+/* control 0 */
+show_store_union_struct_prototype(reporting_mode)
+show_store_union_struct_prototype(modal_ctrl)
+show_store_union_struct_prototype(single_tap_interrupt_enable)
+show_store_union_struct_prototype(in_range_interrupt_enable)
+show_store_union_struct_prototype(new_sn_interrupt_enable)
+
+static struct attribute *attrs_reg_0a[] = {
+ attrify(reporting_mode),
+ NULL
+};
+static struct attribute *attrs_reg_0b[] = {
+ attrify(modal_ctrl),
+ NULL
+};
+static struct attribute *attrs_reg_0c[] = {
+ attrify(single_tap_interrupt_enable),
+ NULL
+};
+static struct attribute *attrs_reg_0d[] = {
+ attrify(in_range_interrupt_enable),
+ NULL
+};
+static struct attribute *attrs_reg_0e[] = {
+ attrify(new_sn_interrupt_enable),
+ NULL
+};
+
+/* control 1 */
+show_store_union_struct_prototype(button_1_interrupt_enable)
+show_store_union_struct_prototype(button_2_interrupt_enable)
+show_store_union_struct_prototype(button_3_interrupt_enable)
+show_store_union_struct_prototype(button_4_interrupt_enable)
+show_store_union_struct_prototype(button_5_interrupt_enable)
+show_store_union_struct_prototype(button_6_interrupt_enable)
+show_store_union_struct_prototype(button_7_interrupt_enable)
+static struct attribute *attrs_reg_1[] = {
+ attrify(button_1_interrupt_enable),
+ attrify(button_2_interrupt_enable),
+ attrify(button_3_interrupt_enable),
+ attrify(button_4_interrupt_enable),
+ attrify(button_5_interrupt_enable),
+ attrify(button_6_interrupt_enable),
+ attrify(button_7_interrupt_enable),
+ NULL
+};
+
+/* control 2-5 */
+show_store_union_struct_prototype(max_x_position)
+show_store_union_struct_prototype(max_y_position)
+static struct attribute *attrs_reg_2__5[] = {
+ attrify(max_x_position),
+ attrify(max_y_position),
+ NULL
+};
+
+/* control 6-9 */
+show_store_union_struct_prototype(x_reduced_reporting_distance)
+show_store_union_struct_prototype(y_reduced_reporting_distance)
+static struct attribute *attrs_reg_6__9[] = {
+ attrify(x_reduced_reporting_distance),
+ attrify(y_reduced_reporting_distance),
+ NULL
+};
+
+/* control 10 */
+show_store_union_struct_prototype(max_tap_time)
+static struct attribute *attrs_reg_10[] = {
+ attrify(max_tap_time),
+ NULL
+};
+
+
+static struct attribute_group attrs_ctrl[] = {
+ GROUP(attrs_reg_0a),
+ GROUP(attrs_reg_0b),
+ GROUP(attrs_reg_0c),
+ GROUP(attrs_reg_0d),
+ GROUP(attrs_reg_0e),
+ GROUP(attrs_reg_1),
+ GROUP(attrs_reg_2__5),
+ GROUP(attrs_reg_6__9),
+ GROUP(attrs_reg_10)
+};
+
+enum ctrl_reg_group {
+ f41_ctrl_reg_0a = 0,
+ f41_ctrl_reg_0b = 1,
+ f41_ctrl_reg_0c = 2,
+ f41_ctrl_reg_0d = 3,
+ f41_ctrl_reg_0e = 4,
+ f41_ctrl_reg_1 = 5,
+ f41_ctrl_reg_2__5 = 6,
+ f41_ctrl_reg_6__9 = 7,
+ f41_ctrl_reg_10 = 8
+};
+
+/* data 0-3 */
+show_union_struct_prototype(x_position)
+show_union_struct_prototype(y_position)
+static struct attribute *attrs_data_reg_0__3[] = {
+ attrify(x_position),
+ attrify(y_position),
+ NULL
+};
+
+/* data 4 */
+show_union_struct_prototype(force)
+static struct attribute *attrs_data_reg_4[] = {
+ attrify(force),
+ NULL
+};
+
+/* data 5 */
+/* Handled in button map */
+
+/* data 6 */
+show_union_struct_prototype(single_tap)
+show_union_struct_prototype(in_range)
+show_union_struct_prototype(new_serial_number)
+static struct attribute *attrs_data_reg_6a[] = {
+ attrify(single_tap),
+ NULL
+};
+static struct attribute *attrs_data_reg_6b[] = {
+ attrify(in_range),
+ NULL
+};
+static struct attribute *attrs_data_reg_6c[] = {
+ attrify(new_serial_number),
+ NULL
+};
+
+/* data 7-8 */
+show_union_struct_prototype(azimuth)
+show_union_struct_prototype(altitude)
+static struct attribute *attrs_data_reg_7__8[] = {
+ attrify(azimuth),
+ attrify(altitude),
+ NULL
+};
+
+/* data 9 */
+show_union_struct_prototype(z_position)
+static struct attribute *attrs_data_reg_9[] = {
+ attrify(z_position),
+ NULL
+};
+
+/* data 10 */
+show_union_struct_prototype(battery_level)
+static struct attribute *attrs_data_reg_10[] = {
+ attrify(battery_level),
+ NULL
+};
+
+/* data 11-14 */
+show_union_struct_prototype(pen_serial_number)
+static struct attribute *attrs_data_reg_11__14[] = {
+ attrify(pen_serial_number),
+ NULL
+};
+
+static struct attribute_group attrs_data[] = {
+ GROUP(attrs_data_reg_0__3),
+ GROUP(attrs_data_reg_4),
+ GROUP(attrs_data_reg_6a),
+ GROUP(attrs_data_reg_6b),
+ GROUP(attrs_data_reg_6c),
+ GROUP(attrs_data_reg_7__8),
+ GROUP(attrs_data_reg_9),
+ GROUP(attrs_data_reg_10),
+ GROUP(attrs_data_reg_11__14)
+};
+
+enum data_reg_group {
+ f41_data_reg_0__3 = 0,
+ f41_data_reg_4 = 1,
+ f41_data_reg_6a = 2,
+ f41_data_reg_6b = 3,
+ f41_data_reg_6c = 4,
+ f41_data_reg_7__8 = 5,
+ f41_data_reg_9 = 6,
+ f41_data_reg_10 = 7,
+ f41_data_reg_11__14 = 8
+};
+
+/* data specific to fn $41 that needs to be kept around */
+struct rmi_fn_41_data {
+ union f41_ap_query query;
+ struct f41_ap_control control;
+ struct f41_ap_data data;
+ u8 *data_block;
+ u8 data_block_size;
+
+ bool attrs_ctrl_regs_exist[ARRAY_SIZE(attrs_ctrl)];
+ bool attrs_data_regs_exist[ARRAY_SIZE(attrs_data)];
+
+ struct mutex control_mutex;
+ struct mutex data_mutex;
+
+ unsigned char button_count;
+ unsigned short *button_map;
+ char input_name[MAX_STR_LEN];
+ char input_phys[MAX_STR_LEN];
+ struct input_dev *input;
+};
+
+static void rmi_f41_free_memory(struct rmi_function_container *fc);
+
+static int rmi_f41_initialize(struct rmi_function_container *fc);
+
+static int rmi_f41_register_device(struct rmi_function_container *fc);
+
+static int rmi_f41_config(struct rmi_function_container *fc);
+
+static int rmi_f41_create_sysfs(struct rmi_function_container *fc);
+
+static int rmi_f41_init(struct rmi_function_container *fc)
+{
+ int retval = 0;
+
+ dev_dbg(&fc->dev, "Intializing F41.");
+
+ retval = rmi_f41_initialize(fc);
+ if (retval < 0)
+ goto error_exit;
+
+ retval = rmi_f41_register_device(fc);
+ if (retval < 0)
+ goto error_exit;
+
+ retval = rmi_f41_create_sysfs(fc);
+ if (retval < 0)
+ goto error_exit;
+
+ return retval;
+
+error_exit:
+ rmi_f41_free_memory(fc);
+
+ return retval;
+}
+
+
+static void rmi_f41_free_memory(struct rmi_function_container *fc)
+{
+ struct rmi_fn_41_data *f41 = fc->data;
+ int i;
+
+ /* query */
+ sysfs_remove_group(&fc->dev.kobj, &attrs_query);
+ /* control */
+ for (i = 0; i < ARRAY_SIZE(attrs_ctrl); i++) {
+ if (f41->attrs_ctrl_regs_exist[i])
+ sysfs_remove_group(&fc->dev.kobj, &attrs_ctrl[i]);
+ }
+ for (i = 0; i < ARRAY_SIZE(attrs_data); i++) {
+ if (f41->attrs_data_regs_exist[i])
+ sysfs_remove_group(&fc->dev.kobj, &attrs_data[i]);
+ }
+ if (f41) {
+ kfree(f41->control.reg_0);
+ kfree(f41->control.reg_1);
+ kfree(f41->control.reg_2__5);
+ kfree(f41->control.reg_6__9);
+ kfree(f41->control.reg_10);
+
+ kfree(f41->data_block);
+ kfree(f41->button_map);
+ kfree(f41);
+ fc->data = NULL;
+ }
+}
+
+
+static int rmi_f41_initialize(struct rmi_function_container *fc)
+{
+ struct rmi_fn_41_data *f41;
+ struct rmi_device_platform_data *pdata;
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+ int retval = 0;
+ u16 next_loc;
+ int i;
+ u8 *data_loc;
+
+ f41 = kzalloc(sizeof(struct rmi_fn_41_data), GFP_KERNEL);
+ if (!f41) {
+ dev_err(&fc->dev, "Failed to allocate rmi_fn_41_data.\n");
+ return -ENOMEM;
+ }
+ fc->data = f41;
+
+ /* Read F41 Query Data */
+ f41->query.address = fc->fd.query_base_addr;
+ retval = rmi_read_block(fc->rmi_dev, f41->query.address,
+ (u8 *)&f41->query, sizeof(f41->query.regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Could not read query registers from 0x%04x\n",
+ f41->query.address);
+ return retval;
+ }
+
+ /* Initialize Control Data */
+ next_loc = fc->fd.control_base_addr;
+
+ if (f41->query.has_reduced_reporting == 1 ||
+ f41->query.has_modal_control == 1 ||
+ f41->query.has_single_tap == 1 ||
+ f41->query.has_z == 1 ||
+ f41->query.has_serial_number == 1) {
+ f41->control.reg_0 = kzalloc(sizeof(union f41_ap_control_0),
+ GFP_KERNEL);
+ if (!f41->control.reg_0) {
+ dev_err(&fc->dev, "Failed to allocate control register 0.");
+ return -ENOMEM;
+ }
+ f41->control.reg_0->address = next_loc;
+ next_loc += sizeof(f41->control.reg_0->regs);
+ retval = rmi_read_block(fc->rmi_dev,
+ f41->control.reg_0->address,
+ f41->control.reg_0->regs,
+ sizeof(f41->control.reg_0->regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Could not read Control register 0 from 0x%04x\n",
+ f41->control.reg_0->address);
+ return retval;
+ }
+ }
+
+ f41->attrs_ctrl_regs_exist[f41_ctrl_reg_0a] =
+ f41->query.has_reduced_reporting == 1;
+ f41->attrs_ctrl_regs_exist[f41_ctrl_reg_0b] =
+ f41->query.has_modal_control == 1;
+ f41->attrs_ctrl_regs_exist[f41_ctrl_reg_0c] =
+ f41->query.has_single_tap == 1;
+ f41->attrs_ctrl_regs_exist[f41_ctrl_reg_0d] =
+ f41->query.has_z == 1;
+ f41->attrs_ctrl_regs_exist[f41_ctrl_reg_0e] =
+ f41->query.has_serial_number == 1;
+
+ if (f41->query.number_of_buttons > 0) {
+ f41->control.reg_1 = kzalloc(sizeof(union f41_ap_control_1),
+ GFP_KERNEL);
+ if (!f41->control.reg_1) {
+ dev_err(&fc->dev, "Failed to allocate control registers.");
+ return -ENOMEM;
+ }
+ f41->control.reg_1->address = next_loc;
+ next_loc += sizeof(f41->control.reg_1->regs);
+ retval = rmi_read_block(fc->rmi_dev,
+ f41->control.reg_1->address,
+ f41->control.reg_1->regs,
+ sizeof(f41->control.reg_1->regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Could not read Control register 1 from 0x%04x\n",
+ f41->control.reg_1->address);
+ return retval;
+ }
+ f41->attrs_ctrl_regs_exist[f41_ctrl_reg_1] = true;
+ }
+
+ f41->control.reg_2__5 = kzalloc(sizeof(union f41_ap_control_2__5),
+ GFP_KERNEL);
+ if (!f41->control.reg_2__5) {
+ dev_err(&fc->dev, "Failed to allocate control registers 2-5.");
+ return -ENOMEM;
+ }
+ f41->control.reg_2__5->address = next_loc;
+ next_loc += sizeof(f41->control.reg_2__5->regs);
+ retval = rmi_read_block(fc->rmi_dev, f41->control.reg_2__5->address,
+ f41->control.reg_2__5->regs,
+ sizeof(f41->control.reg_2__5->regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Could not read Control registers 2-5 from 0x%04x\n",
+ f41->control.reg_2__5->address);
+ return retval;
+ }
+ f41->attrs_ctrl_regs_exist[f41_ctrl_reg_2__5] = true;
+
+ if (f41->query.has_reduced_reporting == 1) {
+ f41->control.reg_6__9 =
+ kzalloc(sizeof(union f41_ap_control_6__9), GFP_KERNEL);
+ if (!f41->control.reg_6__9) {
+ dev_err(&fc->dev, "Failed to allocate control registers 6-9.");
+ return -ENOMEM;
+ }
+ f41->control.reg_6__9->address = next_loc;
+ next_loc += sizeof(f41->control.reg_6__9->regs);
+ retval = rmi_read_block(fc->rmi_dev,
+ f41->control.reg_6__9->address,
+ f41->control.reg_6__9->regs,
+ sizeof(f41->control.reg_6__9->regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Could not read Control registers 6-9 from 0x%04x\n",
+ f41->control.reg_6__9->address);
+ return retval;
+ }
+ f41->attrs_ctrl_regs_exist[f41_ctrl_reg_6__9] = true;
+ }
+
+ if (f41->query.has_single_tap == 1) {
+ f41->control.reg_10 = kzalloc(sizeof(union f41_ap_control_10),
+ GFP_KERNEL);
+ if (!f41->control.reg_10) {
+ dev_err(&fc->dev, "Failed to allocate control register 10.");
+ return -ENOMEM;
+ }
+ f41->control.reg_10->address = next_loc;
+ next_loc += sizeof(f41->control.reg_10->regs);
+ retval = rmi_read_block(fc->rmi_dev,
+ f41->control.reg_10->address,
+ f41->control.reg_10->regs,
+ sizeof(f41->control.reg_10->regs));
+ if (retval < 0) {
+ dev_err(&fc->dev, "Could not read Control register 10 from 0x%04x\n",
+ f41->control.reg_10->address);
+ return retval;
+ }
+ f41->attrs_ctrl_regs_exist[f41_ctrl_reg_10] = true;
+ }
+
+
+ /* initialize data registers */
+
+ f41->data_block = kzalloc(sizeof(union f41_ap_data_0__3)
+ + sizeof(union f41_ap_data_4)
+ + sizeof(union f41_ap_data_5)
+ + sizeof(union f41_ap_data_6)
+ + sizeof(union f41_ap_data_7__8)
+ + sizeof(union f41_ap_data_9)
+ + sizeof(union f41_ap_data_10)
+ + sizeof(union f41_ap_data_11__14),
+ GFP_KERNEL);
+ if (!f41->data_block) {
+ dev_err(&fc->dev, "Failed to allocate data registers.");
+ return -ENOMEM;
+ }
+ data_loc = f41->data_block;
+ /* data 0-3 */
+
+ f41->data.reg_0__3 = (union f41_ap_data_0__3 *) data_loc;
+ data_loc += sizeof(union f41_ap_data_0__3);
+ f41->attrs_data_regs_exist[f41_data_reg_0__3] = true;
+
+ /* data 4 */
+ if (f41->query.has_force == 1) {
+ f41->data.reg_4 = (union f41_ap_data_4 *) data_loc;
+ data_loc += sizeof(union f41_ap_data_4);
+ f41->attrs_data_regs_exist[f41_data_reg_4] = true;
+ }
+
+ /* data 5 */
+ /* button map */
+ f41->button_map = kcalloc(f41->query.number_of_buttons,
+ sizeof(unsigned short), GFP_KERNEL);
+ if (!f41->button_map) {
+ dev_err(&fc->dev, "Failed to allocate button map.\n");
+ return -ENOMEM;
+ }
+ if (f41->query.number_of_buttons > 0) {
+ f41->data.reg_5 = (union f41_ap_data_5 *) data_loc;
+ data_loc += sizeof(union f41_ap_data_5);
+ }
+ pdata = to_rmi_platform_data(rmi_dev);
+ if (pdata) {
+ if (!pdata->f41_button_map)
+ dev_warn(&fc->dev, "%s - button_map is NULL", __func__);
+ else if (!pdata->f41_button_map->map)
+ dev_warn(&fc->dev,
+ "Platformdata button map is missing!\n");
+ else {
+ if (pdata->f41_button_map->nbuttons !=
+ f41->query.number_of_buttons)
+ dev_warn(&fc->dev,
+ "Platformdata button map size (%d) != number of buttons on device (%d).\n",
+ pdata->f41_button_map->nbuttons,
+ f41->query.number_of_buttons);
+ f41->button_count = min(f41->query.number_of_buttons,
+ pdata->f41_button_map->nbuttons);
+ for (i = 0; i < f41->button_count; i++)
+ f41->button_map[i] =
+ pdata->f41_button_map->map[i];
+ }
+ }
+
+ /* data 6 */
+ if (f41->query.has_z == 1 || f41->query.has_single_tap == 1
+ || f41->query.has_serial_number == 1) {
+ f41->data.reg_6 = (union f41_ap_data_6 *) data_loc;
+ data_loc += sizeof(union f41_ap_data_6);
+ }
+ f41->attrs_data_regs_exist[f41_data_reg_6a] =
+ f41->query.has_single_tap == 1;
+ f41->attrs_data_regs_exist[f41_data_reg_6b] = f41->query.has_z == 1;
+ f41->attrs_data_regs_exist[f41_data_reg_6c] =
+ f41->query.has_serial_number == 1;
+
+ /* data 7-8 */
+ if (f41->query.has_orientation == 1) {
+ f41->data.reg_7__8 = (union f41_ap_data_7__8 *) data_loc;
+ data_loc += sizeof(union f41_ap_data_7__8);
+ f41->attrs_data_regs_exist[f41_data_reg_7__8] = true;
+ }
+
+ /* data 9 */
+ if (f41->query.has_z == 1) {
+ f41->data.reg_9 = (union f41_ap_data_9 *) data_loc;
+ data_loc += sizeof(union f41_ap_data_9);
+ f41->attrs_data_regs_exist[f41_data_reg_9] = true;
+ }
+
+ /* data 10 */
+ if (f41->query.has_battery == 1) {
+ f41->data.reg_10 = (union f41_ap_data_10 *) data_loc;
+ data_loc += sizeof(union f41_ap_data_10);
+ f41->attrs_data_regs_exist[f41_data_reg_10] = true;
+ }
+
+ /* data 11-14 */
+ if (f41->query.has_serial_number > 0) {
+ f41->data.reg_11__14 = (union f41_ap_data_11__14 *) data_loc;
+ data_loc += sizeof(union f41_ap_data_11__14);
+ f41->attrs_data_regs_exist[f41_data_reg_11__14] = true;
+ }
+
+ f41->data_block_size = data_loc - f41->data_block;
+ mutex_init(&f41->control_mutex);
+ mutex_init(&f41->data_mutex);
+ return 0;
+}
+
+
+static int rmi_f41_create_sysfs(struct rmi_function_container *fc)
+{
+ u8 attr_num;
+ struct rmi_fn_41_data *f41 = fc->data;
+ dev_dbg(&fc->dev, "Creating F41 sysfs files.");
+
+ /* Set up sysfs device attributes. */
+ if (sysfs_create_group(&fc->dev.kobj, &attrs_query) < 0) {
+ dev_err(&fc->dev, "Failed to create query sysfs files.");
+ return -ENODEV;
+ }
+ for (attr_num = 0; attr_num < ARRAY_SIZE(attrs_ctrl); attr_num++) {
+ if (f41->attrs_ctrl_regs_exist[attr_num]) {
+ if (sysfs_create_group(&fc->dev.kobj,
+ &attrs_ctrl[attr_num]) < 0) {
+ dev_err(&fc->dev, "Failed to create sysfs file group for reg group %d.",
+ attr_num);
+ return -ENODEV;
+ }
+ }
+ }
+ for (attr_num = 0; attr_num < ARRAY_SIZE(attrs_data); attr_num++) {
+ if (f41->attrs_data_regs_exist[attr_num]) {
+ if (sysfs_create_group(&fc->dev.kobj,
+ &attrs_data[attr_num]) < 0) {
+ dev_err(&fc->dev, "Failed to create sysfs file group for reg group %d.",
+ attr_num);
+ return -ENODEV;
+ }
+ }
+ }
+ return 0;
+}
+
+
+static int rmi_f41_config(struct rmi_function_container *fc)
+{
+ struct rmi_fn_41_data *f41 = fc->data;
+
+ /* Write Control Register values back to device */
+ if (f41->attrs_ctrl_regs_exist[f41_ctrl_reg_0a]
+ || f41->attrs_ctrl_regs_exist[f41_ctrl_reg_0b]
+ || f41->attrs_ctrl_regs_exist[f41_ctrl_reg_0c]
+ || f41->attrs_ctrl_regs_exist[f41_ctrl_reg_0d]
+ || f41->attrs_ctrl_regs_exist[f41_ctrl_reg_0e])
+ rmi_write_block(fc->rmi_dev, f41->control.reg_0->address,
+ (u8 *)f41->control.reg_0,
+ sizeof(f41->control.reg_0->regs));
+ if (f41->attrs_ctrl_regs_exist[f41_ctrl_reg_1])
+ rmi_write_block(fc->rmi_dev, f41->control.reg_1->address,
+ (u8 *)f41->control.reg_1,
+ sizeof(f41->control.reg_1->regs));
+ if (f41->attrs_ctrl_regs_exist[f41_ctrl_reg_2__5])
+ rmi_write_block(fc->rmi_dev, f41->control.reg_2__5->address,
+ (u8 *)f41->control.reg_2__5,
+ sizeof(f41->control.reg_2__5->regs));
+ if (f41->attrs_ctrl_regs_exist[f41_ctrl_reg_6__9])
+ rmi_write_block(fc->rmi_dev, f41->control.reg_6__9->address,
+ (u8 *)f41->control.reg_6__9,
+ sizeof(f41->control.reg_6__9->regs));
+ if (f41->attrs_ctrl_regs_exist[f41_ctrl_reg_10])
+ rmi_write_block(fc->rmi_dev, f41->control.reg_10->address,
+ (u8 *)f41->control.reg_10,
+ sizeof(f41->control.reg_10->regs));
+
+ return 0;
+}
+
+static void rmi_f41_remove(struct rmi_function_container *fc)
+{
+ struct rmi_fn_41_data *f41 = fc->data;
+ dev_dbg(&fc->dev, "Removing F41.");
+ input_unregister_device(f41->input);
+ rmi_f41_free_memory(fc);
+}
+
+/* sysfs functions */
+/* Query */
+simple_show_union_struct_unsigned(query, has_reduced_reporting)
+simple_show_union_struct_unsigned(query, has_modal_control)
+simple_show_union_struct_unsigned(query, has_force)
+simple_show_union_struct_unsigned(query, has_orientation)
+simple_show_union_struct_unsigned(query, has_serial_number)
+simple_show_union_struct_unsigned(query, has_battery)
+simple_show_union_struct_unsigned(query, has_z)
+simple_show_union_struct_unsigned(query, has_single_tap)
+simple_show_union_struct_unsigned(query, number_of_buttons)
+
+/* Control */
+show_store_union_struct_unsigned(control, reg_0, reporting_mode)
+show_store_union_struct_unsigned(control, reg_0, modal_ctrl)
+show_store_union_struct_unsigned(control, reg_0, single_tap_interrupt_enable)
+show_store_union_struct_unsigned(control, reg_0, in_range_interrupt_enable)
+show_store_union_struct_unsigned(control, reg_0, new_sn_interrupt_enable)
+show_store_union_struct_unsigned(control, reg_1, button_1_interrupt_enable)
+show_store_union_struct_unsigned(control, reg_1, button_2_interrupt_enable)
+show_store_union_struct_unsigned(control, reg_1, button_3_interrupt_enable)
+show_store_union_struct_unsigned(control, reg_1, button_4_interrupt_enable)
+show_store_union_struct_unsigned(control, reg_1, button_5_interrupt_enable)
+show_store_union_struct_unsigned(control, reg_1, button_6_interrupt_enable)
+show_store_union_struct_unsigned(control, reg_1, button_7_interrupt_enable)
+show_store_union_struct_unsigned(control, reg_2__5, max_x_position)
+show_store_union_struct_unsigned(control, reg_2__5, max_y_position)
+show_store_union_struct_unsigned(control,
+ reg_6__9, x_reduced_reporting_distance)
+show_store_union_struct_unsigned(control,
+ reg_6__9, y_reduced_reporting_distance)
+show_store_union_struct_unsigned(control, reg_10, max_tap_time)
+
+
+/* Data */
+simple_show_union_struct_unsigned2(data, reg_0__3, x_position)
+simple_show_union_struct_unsigned2(data, reg_0__3, y_position)
+simple_show_union_struct_unsigned2(data, reg_4, force)
+simple_show_union_struct_unsigned2(data, reg_6, single_tap)
+simple_show_union_struct_unsigned2(data, reg_6, in_range)
+simple_show_union_struct_unsigned2(data, reg_6, new_serial_number)
+simple_show_union_struct_unsigned2(data, reg_7__8, azimuth)
+simple_show_union_struct_unsigned2(data, reg_7__8, altitude)
+simple_show_union_struct_unsigned2(data, reg_9, z_position)
+simple_show_union_struct_unsigned2(data, reg_10, battery_level)
+simple_show_union_struct_unsigned2(data, reg_11__14, pen_serial_number)
+
+static int rmi_f41_register_device(struct rmi_function_container *fc)
+{
+ int i;
+ int rc;
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+ struct rmi_fn_41_data *f41 = fc->data;
+ struct input_dev *input_dev = input_allocate_device();
+
+ if (!input_dev) {
+ dev_err(&fc->dev, "Failed to allocate input device.\n");
+ return -ENOMEM;
+ }
+
+ f41->input = input_dev;
+ snprintf(f41->input_name, MAX_STR_LEN, "%sfn%02x",
+ dev_name(&rmi_dev->dev), fc->fd.function_number);
+ input_dev->name = f41->input_name;
+ snprintf(f41->input_phys, MAX_STR_LEN, "%s/input0", input_dev->name);
+ input_dev->phys = f41->input_phys;
+ input_dev->dev.parent = &rmi_dev->dev;
+ input_set_drvdata(input_dev, f41);
+
+ /* Set up any input events. */
+ set_bit(EV_SYN, input_dev->evbit);
+ set_bit(EV_KEY, input_dev->evbit);
+ /* set bits for each button... */
+ for (i = 0; i < f41->button_count; i++)
+ set_bit(f41->button_map[i], input_dev->keybit);
+ rc = input_register_device(input_dev);
+ if (rc < 0) {
+ dev_err(&fc->dev, "Failed to register input device.\n");
+ goto error_free_device;
+ }
+
+ return 0;
+
+error_free_device:
+ input_free_device(input_dev);
+
+ return rc;
+}
+
+static int rmi_f41_attention(struct rmi_function_container *fc, u8 *irq_bits)
+{
+ int error;
+ int button;
+ struct rmi_device *rmi_dev = fc->rmi_dev;
+ struct rmi_fn_41_data *f41 = fc->data;
+
+
+ /* Read all the data registers. */
+ error = rmi_read_block(rmi_dev, fc->fd.data_base_addr, f41->data_block,
+ f41->data_block_size);
+ if (error < 0) {
+ dev_err(&fc->dev, "Failed to read data registers.\n");
+ return error;
+ }
+
+ /* Generate events for buttons that change state. */
+ for (button = 0; button < f41->button_count; button++) {
+ bool button_status;
+ /* bit shift to get button's status */
+ button_status =
+ ((f41->data.reg_5->regs[0] >> button) & 0x01) != 0;
+ /* Generate an event here. */
+ input_report_key(f41->input, f41->button_map[button],
+ button_status);
+ }
+
+ input_sync(f41->input); /* sync after groups of events */
+ return 0;
+}
+
+static struct rmi_function_handler function_handler = {
+ .func = 0x41,
+ .init = rmi_f41_init,
+ .config = rmi_f41_config,
+ .remove = rmi_f41_remove,
+ .attention = rmi_f41_attention
+};
+
+static int __init rmi_f41_module_init(void)
+{
+ int error;
+
+ error = rmi_register_function_driver(&function_handler);
+ if (error < 0) {
+ pr_err("%s: register failed!\n", __func__);
+ return error;
+ }
+ return 0;
+}
+
+static void rmi_f41_module_exit(void)
+{
+ rmi_unregister_function_driver(&function_handler);
+}
+
+module_init(rmi_f41_module_init);
+module_exit(rmi_f41_module_exit);
+
+MODULE_AUTHOR("Daniel Rosenberg <daniel.rosenberg@...aptics.com>");
+MODULE_DESCRIPTION("RMI F41 module");
+MODULE_LICENSE("GPL");
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists