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android_kernel_samsung_msm8226/drivers/motor/tspdrv.c

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/*
** =========================================================================
** File:
** tspdrv.c
**
** Description:
** TouchSense Kernel Module main entry-point.
**
** Portions Copyright (c) 2008-2010 Immersion Corporation. All Rights Reserved.
**
** This file contains Original Code and/or Modifications of Original Code
** as defined in and that are subject to the GNU Public License v2 -
** (the 'License'). You may not use this file except in compliance with the
** License. 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.,
** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or contact
** TouchSenseSales@immersion.com.
**
** The Original Code and all software distributed under the License are
** distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
** EXPRESS OR IMPLIED, AND IMMERSION HEREBY DISCLAIMS ALL SUCH WARRANTIES,
** INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
** FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see
** the License for the specific language governing rights and limitations
** under the License.
** =========================================================================
*/
#ifndef __KERNEL__
#define __KERNEL__
#endif
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/fs.h>
#include <linux/version.h>
#include <linux/miscdevice.h>
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <linux/hrtimer.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/wakelock.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/krait-regulator.h>
#include <linux/mfd/pm8xxx/pwm.h>
#include "../staging/android/timed_output.h"
#include "tspdrv.h"
#include <linux/vibrator.h>
#include "immvibespi.c"
#if defined(VIBE_DEBUG) && defined(VIBE_RECORD)
#include <tspdrvRecorder.c>
#endif
#include <mach/msm_xo.h>
/* Device name and version information */
/* DO NOT CHANGE - this is auto-generated */
#define VERSION_STR " v3.4.55.7\n"
/* account extra space for future extra digits in version number */
#define VERSION_STR_LEN 16
/* initialized in tspdrv_probe */
static char g_szdevice_name[(VIBE_MAX_DEVICE_NAME_LENGTH
+ VERSION_STR_LEN)
* NUM_ACTUATORS];
static size_t g_cchdevice_name;
static struct wake_lock vib_wake_lock;
/* Flag indicating whether the driver is in use */
static char g_bisplaying;
/* Buffer to store data sent to SPI */
#define SPI_BUFFER_SIZE \
(NUM_ACTUATORS * (VIBE_OUTPUT_SAMPLE_SIZE + SPI_HEADER_SIZE))
static int g_bstoprequested;
static actuator_samples_buffer g_samples_buffer[NUM_ACTUATORS] = {{0} };
static char g_cwrite_buffer[SPI_BUFFER_SIZE];
#define VIBE_TUNING
/* #define VIBE_ENABLE_SYSTEM_TIMER */
/* For QA purposes */
#ifdef QA_TEST
#define FORCE_LOG_BUFFER_SIZE 128
#define TIME_INCREMENT 5
static int g_ntime;
static int g_nforcelog_index;
static int8_t g_nforcelog[FORCE_LOG_BUFFER_SIZE];
#endif
#ifdef IMPLEMENT_AS_CHAR_DRIVER
static int g_nmajor;
#endif
/* Needs to be included after the global variables because it uses them */
#ifdef CONFIG_HIGH_RES_TIMERS
#include "VibeOSKernelLinuxHRTime.c"
#else
#include "VibeOSKernelLinuxTime.c"
#endif
/* timed_output */
static void _set_vibetonz_work(struct work_struct *unused);
static DECLARE_WORK(vibetonz_work, _set_vibetonz_work);
static struct hrtimer timer;
static int max_timeout = 10000;
static int vibrator_value = -1;
static int vibrator_work;
#define TEST_MODE_TIME 10000
struct vibrator_platform_data vibrator_drvdata;
/*
* msm8974_sec tspdrv vibration strength control
* (/sys/class/timed_output/vibrator/pwm_value)
*
* sysfs pwm_value
* range : 0 - 100 (100 = old hardcoded value)
*
* Author : Park Ju Hyung <qkrwngud825@gmail.com>
* Modified by : Jean-Pierre Rasquin <yank555.lu@gmail.com>
*/
#define BASE_STRENGTH 126
static unsigned int pwm_val = 100;
static int set_vibetonz(int timeout)
{
int8_t strength;
if (!timeout) {
if (vibrator_drvdata.vib_model == HAPTIC_PWM) {
strength = 0;
ImmVibeSPI_ForceOut_SetSamples(0, 8, 1, &strength);
} else { /* HAPTIC_MOTOR */
ImmVibeSPI_ForceOut_AmpDisable(0);
}
} else {
DbgOut((KERN_INFO "tspdrv: ENABLE\n"));
if (vibrator_drvdata.vib_model == HAPTIC_PWM) {
strength = (int8_t) (BASE_STRENGTH * pwm_val / 100);
/* 90% duty cycle */
ImmVibeSPI_ForceOut_SetSamples(0, 8, 1, &strength);
} else { /* HAPTIC_MOTOR */
DbgOut((KERN_INFO "tspdrv: ampenable\n"));
ImmVibeSPI_ForceOut_AmpEnable(0);
}
}
vibrator_value = timeout;
return 0;
}
static ssize_t pwm_value_show(struct device *dev, struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%u\n", pwm_val);
}
ssize_t pwm_value_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
unsigned int new_pwm_val;
if (!sscanf(buf, "%u", &new_pwm_val))
return -EINVAL;
if (new_pwm_val < 0 || new_pwm_val > 100) {
pr_info("[VIB] %s: new pwm_val %d is out of [0, 100] range\n", __func__, pwm_val);
return -EINVAL;
} else {
pr_info("[VIB] %s: pwm_val=%d\n", __func__, pwm_val);
}
if (new_pwm_val != pwm_val)
pwm_val = new_pwm_val;
return count;
}
static DEVICE_ATTR(pwm_value, S_IRUGO | S_IWUSR,
pwm_value_show, pwm_value_store);
static void _set_vibetonz_work(struct work_struct *unused)
{
set_vibetonz(vibrator_work);
return;
}
static enum hrtimer_restart vibetonz_timer_func(struct hrtimer *timer)
{
/* set_vibetonz(0); */
vibrator_work = 0;
schedule_work(&vibetonz_work);
return HRTIMER_NORESTART;
}
static int get_time_for_vibetonz(struct timed_output_dev *dev)
{
int remaining;
if (hrtimer_active(&timer)) {
ktime_t r = hrtimer_get_remaining(&timer);
remaining = ktime_to_ms(r);/*returning time in ms*/
} else {
remaining = 0;
}
if (vibrator_value == -1)
remaining = -1;
return remaining;
}
static void enable_vibetonz_from_user(struct timed_output_dev *dev, int value)
{
printk(KERN_DEBUG "tspdrv: Enable time = %d msec\n", value);
hrtimer_cancel(&timer);
/* set_vibetonz(value); */
#ifdef CONFIG_TACTILE_ASSIST
g_bOutputDataBufferEmpty = 0;
#endif
vibrator_work = value;
schedule_work(&vibetonz_work);
if (value > 0 && (value != TEST_MODE_TIME)) {
if (value > max_timeout)
value = max_timeout;
hrtimer_start(&timer,
ktime_set(value / 1000, (value % 1000) * 1000000),
HRTIMER_MODE_REL);
vibrator_value = 0;
}
}
static struct timed_output_dev timed_output_vt = {
.name = "vibrator",
.get_time = get_time_for_vibetonz,
.enable = enable_vibetonz_from_user,
};
static void vibetonz_start(void)
{
int ret = 0;
hrtimer_init(&timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
timer.function = vibetonz_timer_func;
ret = timed_output_dev_register(&timed_output_vt);
if (ret) {
DbgOut((KERN_ERR
"tspdrv: timed_output_dev_register is fail\n"));
return;
}
ret = device_create_file(timed_output_vt.dev, &dev_attr_pwm_value);
if (ret)
DbgOut((KERN_ERR
"tspdrv: create sysfs fail: pwm_value\n"));
}
/* File IO */
static int open(struct inode *inode, struct file *file);
static int release(struct inode *inode, struct file *file);
static ssize_t read(struct file *file, char *buf, size_t count, loff_t *ppos);
static ssize_t write(struct file *file, const char *buf, size_t count,
loff_t *ppos);
#if HAVE_UNLOCKED_IOCTL
static long ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
#endif
static const struct file_operations fops = {
.owner = THIS_MODULE,
.read = read,
.write = write,
.unlocked_ioctl = ioctl,
.open = open,
.release = release ,
.llseek = default_llseek
};
#ifndef IMPLEMENT_AS_CHAR_DRIVER
static struct miscdevice miscdev = {
.minor = 0, //MISC_DYNAMIC_MINOR,
.name = MODULE_NAME,
.fops = &fops
};
#endif
#ifdef VIBE_ENABLE_SYSTEM_TIMER
int vibetonz_clk_on(struct device *dev)
{
struct clk *vibetonz_clk = NULL;
vibetonz_clk = clk_get(dev, "timers");
if (IS_ERR(vibetonz_clk)) {
DbgOut((KERN_ERR "tspdrv: failed to get clock for vibetonz\n"));
goto err_clk0;
}
clk_enable(vibetonz_clk);
clk_put(vibetonz_clk);
return 0;
err_clk0:
clk_put(vibetonz_clk);
return -EINVAL;
}
int vibetonz_clk_off(struct device *dev)
{
struct clk *vibetonz_clk = NULL;
vibetonz_clk = clk_get(dev, "timers");
if (IS_ERR(vibetonz_clk)) {
DbgOut((KERN_ERR "tspdrv: failed to get clock for vibetonz\n"));
goto err_clk0;
}
clk_disable(vibetonz_clk);
clk_put(vibetonz_clk);
return 0;
err_clk0:
clk_put(vibetonz_clk);
return -EINVAL;
}
#else
int vibetonz_clk_on(struct device *dev)
{
return -EINVAL;
}
int vibetonz_clk_off(struct device *dev)
{
return -EINVAL;
}
#endif /* VIBE_ENABLE_SYSTEM_TIMER */
static int tspdrv_parse_dt(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
int rc;
#if defined(CONFIG_MACH_HLTEDCM) || defined(CONFIG_MACH_HLTEKDI) || defined (CONFIG_MACH_JS01LTEDCM)
vibrator_drvdata.vib_pwm_gpio = of_get_named_gpio(np, "samsung,pmic_vib_pwm_jpn", 0);
#else
vibrator_drvdata.vib_pwm_gpio = of_get_named_gpio(np, "samsung,pmic_vib_pwm", 0);
#endif
if (!gpio_is_valid(vibrator_drvdata.vib_pwm_gpio)) {
pr_err("%s:%d, reset gpio not specified\n",
__func__, __LINE__);
}
#if defined(CONFIG_MOTOR_ISA1000)
vibrator_drvdata.vib_en_gpio = of_get_named_gpio(np, "samsung,vib_en_gpio", 0);
#endif
#if defined(CONFIG_MOTOR_DRV_DRV2603)
vibrator_drvdata.drv2603_en_gpio = of_get_named_gpio(np, "samsung,drv2603_en", 0);
if (!gpio_is_valid(vibrator_drvdata.drv2603_en_gpio)) {
pr_err("%s:%d, drv2603_en_gpio not specified\n",
__func__, __LINE__);
}
#endif
#if defined(CONFIG_MOTOR_DRV_MAX77888)
vibrator_drvdata.max77888_en_gpio = of_get_named_gpio(np, "samsung,vib_power_en", 0);
if (!gpio_is_valid(vibrator_drvdata.max77888_en_gpio)) {
pr_err("%s:%d, max77888_en_gpio not specified\n",__func__, __LINE__);
}
#endif
rc = of_property_read_u32(np, "samsung,vib_model", &vibrator_drvdata.vib_model);
if (rc) {
pr_err("%s:%d, vib_model not specified\n",
__func__, __LINE__);
return -EINVAL;
}
rc = of_property_read_u32(np, "samsung,pmic_vib_en", &vibrator_drvdata.is_pmic_vib_en);
if (rc) {
pr_err("%s:%d, is_pmic_vib_en not specified\n",
__func__, __LINE__);
return -EINVAL;
}
rc = of_property_read_u32(np, "samsung,pmic_haptic_pwr_en", &vibrator_drvdata.is_pmic_haptic_pwr_en);
if (rc) {
pr_err("%s:%d, is_pmic_haptic_pwr_en not specified\n",
__func__, __LINE__);
return -EINVAL;
}
//vibrator_drvdata.is_pmic_vib_pwm = 0; AP PWM PIN
//vibrator_drvdata.is_pmic_vib_pwm = 1; PMIC PWM PIN
rc = of_property_read_u32(np, "samsung,is_pmic_vib_pwm", &vibrator_drvdata.is_pmic_vib_pwm);
if (rc) {
pr_err("%s:%d, is_pmic_vib_pwm not specified\n",
__func__, __LINE__);
return -EINVAL;
}
rc = of_property_read_u32(np, "samsung,pwm_period_us", &vibrator_drvdata.pwm_period_us);
if (rc) {
pr_err("%s:%d, pwm_period_us not specified\n",
__func__, __LINE__);
return -EINVAL;
}
rc = of_property_read_u32(np, "samsung,duty_us", &vibrator_drvdata.duty_us);
if (rc) {
pr_err("%s:%d, duty_us not specified\n",
__func__, __LINE__);
return -EINVAL;
}
rc = of_property_read_u32(np, "samsung,changed_chip", &vibrator_drvdata.changed_chip);
if (rc) {
pr_info("%s:%d, changed_chip not specified\n", __func__, __LINE__);
vibrator_drvdata.changed_chip = 0;
rc = 0;
} else {
if (vibrator_drvdata.changed_chip)
vibrator_drvdata.changed_en_gpio = of_get_named_gpio(np, "samsung,changed_en_gpio", 0);
}
return rc;
}
#if defined(CONFIG_MOTOR_DRV_MAX77804K) || defined(CONFIG_MOTOR_DRV_MAX77828)
static void max77803_haptic_power_onoff(int onoff)
{
int ret;
static struct regulator *reg_l23;
if (!reg_l23) {
reg_l23 = regulator_get(NULL, "8084_l23");
ret = regulator_set_voltage(reg_l23, 3000000, 3000000);
if (IS_ERR(reg_l23)) {
printk(KERN_ERR"could not get 8084_l23, rc = %ld\n",
PTR_ERR(reg_l23));
return;
}
}
if (onoff) {
ret = regulator_enable(reg_l23);
if (ret) {
printk(KERN_ERR"enable l23 failed, rc=%d\n", ret);
return;
}
printk(KERN_DEBUG"haptic power_on is finished.\n");
} else {
if (regulator_is_enabled(reg_l23)) {
ret = regulator_disable(reg_l23);
if (ret) {
printk(KERN_ERR"disable l23 failed, rc=%d\n",
ret);
return;
}
}
printk(KERN_DEBUG"haptic power_off is finished.\n");
}
}
#endif
#if defined(CONFIG_MOTOR_DRV_MAX77803)
static void max77803_haptic_power_onoff(int onoff)
{
int ret;
#if defined(CONFIG_SEC_H_PROJECT) || defined(CONFIG_SEC_MONTBLANC_PROJECT) || defined(CONFIG_SEC_JS_PROJECT) || \
defined(CONFIG_MACH_FLTEEUR) || defined(CONFIG_MACH_FLTESKT) || defined(CONFIG_MACH_JVELTEEUR) ||\
defined(CONFIG_MACH_VIKALCU) || defined(CONFIG_SEC_LOCALE_KOR_FRESCO)
static struct regulator *reg_l23;
if (!reg_l23) {
reg_l23 = regulator_get(NULL, "8941_l23");
#if defined(CONFIG_MACH_FLTESKT)
ret = regulator_set_voltage(reg_l23, 3000000, 3000000);
#elif defined(CONFIG_MACH_HLTEVZW)
ret = regulator_set_voltage(reg_l23, 3100000, 3100000);
#elif defined(CONFIG_SEC_LOCALE_KOR_FRESCO)
ret = regulator_set_voltage(reg_l23, 2488000,2488000);
#else
ret = regulator_set_voltage(reg_l23, 2825000, 2825000);
#endif
if (IS_ERR(reg_l23)) {
printk(KERN_ERR"could not get 8941_l23, rc = %ld\n",
PTR_ERR(reg_l23));
return;
}
}
if (onoff) {
ret = regulator_enable(reg_l23);
if (ret) {
printk(KERN_ERR"enable l23 failed, rc=%d\n", ret);
return;
}
printk(KERN_DEBUG"haptic power_on is finished.\n");
} else {
if (regulator_is_enabled(reg_l23)) {
ret = regulator_disable(reg_l23);
if (ret) {
printk(KERN_ERR"disable l23 failed, rc=%d\n",
ret);
return;
}
}
printk(KERN_DEBUG"haptic power_off is finished.\n");
}
#else
static struct regulator *reg_l17;
if (!reg_l17) {
reg_l17 = regulator_get(NULL, "8941_l17");
ret = regulator_set_voltage(reg_l17, 3000000, 3000000);
if (IS_ERR(reg_l17)) {
printk(KERN_ERR"could not get 8941_l17, rc = %ld\n",
PTR_ERR(reg_l17));
return;
}
}
if (onoff) {
ret = regulator_enable(reg_l17);
if (ret) {
printk(KERN_ERR"enable l17 failed, rc=%d\n", ret);
return;
}
printk(KERN_DEBUG"haptic power_on is finished.\n");
} else {
if (regulator_is_enabled(reg_l17)) {
ret = regulator_disable(reg_l17);
if (ret) {
printk(KERN_ERR"disable l17 failed, rc=%d\n",
ret);
return;
}
}
printk(KERN_DEBUG"haptic power_off is finished.\n");
}
#endif
}
#endif
#if defined(CONFIG_MOTOR_DRV_DRV2603)
void drv2603_gpio_en(bool en)
{
if (en) {
gpio_direction_output(vibrator_drvdata.drv2603_en_gpio, 1);
} else {
gpio_direction_output(vibrator_drvdata.drv2603_en_gpio, 0);
}
}
static int32_t drv2603_gpio_init(void)
{
int ret;
ret = gpio_request(vibrator_drvdata.drv2603_en_gpio, "vib enable");
if (ret < 0) {
printk(KERN_ERR "vib enable gpio_request is failed\n");
return 1;
}
return 0;
}
#endif
#if defined(CONFIG_MOTOR_DRV_MAX77888)
void max77888_gpio_en(bool en)
{
if (en) {
gpio_direction_output(vibrator_drvdata.max77888_en_gpio, 1);
} else {
gpio_direction_output(vibrator_drvdata.max77888_en_gpio, 0);
}
}
static int32_t max77888_gpio_init(void)
{
int ret;
ret = gpio_request(vibrator_drvdata.max77888_en_gpio, "vib enable");
if (ret < 0) {
printk(KERN_ERR "vib enable gpio_request is failed\n");
return 1;
}
return 0;
}
#endif
static struct device *vib_dev;
extern struct class *sec_class;
static ssize_t show_vib_tuning(struct device *dev,
struct device_attribute *attr, char *buf)
{
sprintf(buf, "gp_clk_m %d, gp_clk_n %d, gp_clk_d %d,\
pwm_mul %d, strength %d, min_str %d\n", \
g_nlra_gp_clk_m, g_nlra_gp_clk_n, g_nlra_gp_clk_d, \
g_nlra_gp_clk_pwm_mul, motor_strength, motor_min_strength);
return strlen(buf);
}
static ssize_t store_vib_tuning(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int retval;
int temp_m, temp_n, temp_str;
retval = sscanf(buf, "%3d %3d %2d", &temp_m, &temp_n, &temp_str);
if (retval == 0) {
pr_info("%s, fail to get vib_tuning value\n", __func__);
return count;
}
g_nlra_gp_clk_m = temp_m;
g_nlra_gp_clk_n = temp_n;
g_nlra_gp_clk_d = temp_n / 2;
g_nlra_gp_clk_pwm_mul = temp_n;
motor_strength = temp_str;
motor_min_strength = g_nlra_gp_clk_n*MOTOR_MIN_STRENGTH/100;
pr_info("%s gp_clk_m %d, gp_clk_n %d, gp_clk_d %d,\
pwm_mul %d, strength %d, min_str %d\n", __func__,\
g_nlra_gp_clk_m, g_nlra_gp_clk_n, g_nlra_gp_clk_d,\
g_nlra_gp_clk_pwm_mul, motor_strength, motor_min_strength);
return count;
}
static DEVICE_ATTR(vib_tuning, 0664, show_vib_tuning, store_vib_tuning);
static __devinit int tspdrv_probe(struct platform_device *pdev)
{
int ret, i, rc; /* initialized below */
DbgOut((KERN_INFO "tspdrv: tspdrv_probe.\n"));
motor_min_strength = g_nlra_gp_clk_n*MOTOR_MIN_STRENGTH/100;
if(!pdev->dev.of_node){
DbgOut(KERN_ERR "tspdrv: tspdrv probe failed, DT is NULL");
return -ENODEV;
}
rc = tspdrv_parse_dt(pdev);
if(rc)
return rc;
#if defined(CONFIG_MACH_HLTEDCM) || defined(CONFIG_MACH_HLTEKDI) || defined(CONFIG_MACH_JS01LTEDCM)
virt_mmss_gp1_base = ioremap(MSM_MMSS_GP3_BASE,0x28);
#elif defined(CONFIG_SEC_BERLUTI_PROJECT) || defined(CONFIG_MACH_S3VE3G_EUR)
virt_mmss_gp1_base = ioremap(MSM_MMSS_GP0_BASE,0x28);
#else
virt_mmss_gp1_base = ioremap(MSM_MMSS_GP1_BASE,0x28);
#endif
if (!virt_mmss_gp1_base)
panic("tspdrv : Unable to ioremap MSM_MMSS_GP1 memory!");
#if defined(CONFIG_MOTOR_DRV_MAX77803) || defined(CONFIG_MOTOR_DRV_MAX77804K) || defined(CONFIG_MOTOR_DRV_MAX77828)
vibrator_drvdata.power_onoff = max77803_haptic_power_onoff;
#else
vibrator_drvdata.power_onoff = NULL;
#endif
vibrator_drvdata.pwm_dev = NULL;
#ifdef IMPLEMENT_AS_CHAR_DRIVER
g_nmajor = register_chrdev(0, MODULE_NAME, &fops);
if (g_nmajor < 0) {
DbgOut((KERN_ERR "tspdrv: can't get major number.\n"));
ret = g_nmajor;
iounmap(virt_mmss_gp1_base);
return ret;
}
#else
ret = misc_register(&miscdev);
if (ret) {
DbgOut((KERN_ERR "tspdrv: misc_register failed.\n"));
iounmap(virt_mmss_gp1_base);
return ret;
}
#endif
DbgRecorderInit(());
vibetonz_clk_on(&pdev->dev);
ImmVibeSPI_ForceOut_Initialize();
VibeOSKernelLinuxInitTimer();
/* Get and concatenate device name and initialize data buffer */
g_cchdevice_name = 0;
for (i = 0; i < NUM_ACTUATORS; i++) {
char *szName = g_szdevice_name + g_cchdevice_name;
ImmVibeSPI_Device_GetName(i,
szName, VIBE_MAX_DEVICE_NAME_LENGTH);
/* Append version information and get buffer length */
strlcat(szName, VERSION_STR, sizeof(VERSION_STR));
g_cchdevice_name += strnlen(szName, sizeof(szName));
g_samples_buffer[i].nindex_playing_buffer = -1;/* Not playing */
g_samples_buffer[i].actuator_samples[0].nbuffer_size = 0;
g_samples_buffer[i].actuator_samples[1].nbuffer_size = 0;
}
wake_lock_init(&vib_wake_lock, WAKE_LOCK_SUSPEND, "vib_present");
vibetonz_start();
vib_dev = device_create(sec_class, NULL, 0, NULL, "vib");
if (IS_ERR(vib_dev)) {
pr_info("Failed to create device for samsung vib\n");
}
ret = sysfs_create_file(&vib_dev->kobj, &dev_attr_vib_tuning.attr);
if (ret) {
pr_info("Failed to create sysfs group for samsung specific led\n");
}
return 0;
}
static int __devexit tspdrv_remove(struct platform_device *pdev)
{
DbgOut((KERN_INFO "tspdrv: tspdrv_remove.\n"));
iounmap(virt_mmss_gp1_base);
DbgRecorderTerminate(());
VibeOSKernelLinuxTerminateTimer();
ImmVibeSPI_ForceOut_Terminate();
wake_lock_destroy(&vib_wake_lock);
return 0;
}
static int open(struct inode *inode, struct file *file)
{
DbgOut((KERN_INFO "tspdrv: open.\n"));
if (!try_module_get(THIS_MODULE))
return -ENODEV;
return 0;
}
static int release(struct inode *inode, struct file *file)
{
DbgOut((KERN_INFO "tspdrv: release.\n"));
/*
** Reset force and stop timer when the driver is closed, to make sure
** no dangling semaphore remains in the system, especially when the
** driver is run outside of immvibed for testing purposes.
*/
VibeOSKernelLinuxStopTimer();
/*
** Clear the variable used to store the magic number to prevent
** unauthorized caller to write data. TouchSense service is the only
** valid caller.
*/
file->private_data = (void *)NULL;
module_put(THIS_MODULE);
return 0;
}
static ssize_t read(struct file *file, char *buf, size_t count, loff_t *ppos)
{
const size_t nbufsize =
(g_cchdevice_name > (size_t)(*ppos)) ?
min(count, g_cchdevice_name - (size_t)(*ppos)) : 0;
/* End of buffer, exit */
if (0 == nbufsize)
return 0;
if (0 != copy_to_user(buf, g_szdevice_name + (*ppos), nbufsize)) {
/* Failed to copy all the data, exit */
DbgOut((KERN_ERR "tspdrv: copy_to_user failed.\n"));
return 0;
}
/* Update file position and return copied buffer size */
*ppos += nbufsize;
return nbufsize;
}
static ssize_t write(struct file *file, const char *buf, size_t count,
loff_t *ppos)
{
int i = 0;
*ppos = 0; /* file position not used, always set to 0 */
/* DbgOut((KERN_ERR "tspdrv: write....\n")); */
/*
** Prevent unauthorized caller to write data.
** TouchSense service is the only valid caller.
*/
if (file->private_data != (void *)TSPDRV_MAGIC_NUMBER) {
DbgOut((KERN_ERR "tspdrv: unauthorized write.\n"));
return 0;
}
#ifdef CONFIG_TACTILE_ASSIST
/* Check buffer size */
if ((count < SPI_HEADER_SIZE) || (count > SPI_BUFFER_SIZE)) {
DbgOut((KERN_ERR "tspdrv: invalid write buffer size.\n"));
return 0;
}
if (count == SPI_HEADER_SIZE)
g_bOutputDataBufferEmpty = 1;
else
g_bOutputDataBufferEmpty = 0;
#else
if ((count <= SPI_HEADER_SIZE) || (count > SPI_BUFFER_SIZE)) {
DbgOut((KERN_ERR "tspdrv: invalid write buffer size.\n"));
return 0;
}
#endif
/* Copy immediately the input buffer */
if (0 != copy_from_user(g_cwrite_buffer, buf, count)) {
/* Failed to copy all the data, exit */
DbgOut((KERN_ERR "tspdrv: copy_from_user failed.\n"));
return 0;
}
while (i < count) {
int nindex_free_buffer; /* initialized below */
samples_buffer *pinput_buffer =
(samples_buffer *)(&g_cwrite_buffer[i]);
#ifdef CONFIG_TACTILE_ASSIST
if ((i + SPI_HEADER_SIZE) > count) {
#else
if ((i + SPI_HEADER_SIZE) >= count) {
#endif
/*
** Index is about to go beyond the buffer size.
** (Should never happen).
*/
DbgOut((KERN_EMERG "tspdrv: invalid buffer index.\n"));
return 0;
}
/* Check bit depth */
if (8 != pinput_buffer->nbit_depth)
DbgOut((KERN_WARNING
"tspdrv: invalid bit depth.Use default value(8).\n"));
/* The above code not valid if SPI header size is not 3 */
#if (SPI_HEADER_SIZE != 3)
#error "SPI_HEADER_SIZE expected to be 3"
#endif
/* Check buffer size */
if ((i + SPI_HEADER_SIZE + pinput_buffer->nbuffer_size)
> count) {
/*
** Index is about to go beyond the buffer size.
** (Should never happen).
*/
DbgOut((KERN_EMERG "tspdrv: invalid data size.\n"));
return 0;
}
/* Check actuator index */
if (NUM_ACTUATORS <= pinput_buffer->nactuator_index) {
DbgOut((KERN_ERR "tspdrv: invalid actuator index.\n"));
i += (SPI_HEADER_SIZE + pinput_buffer->nbuffer_size);
continue;
}
if (0 == g_samples_buffer[pinput_buffer->nactuator_index]
.actuator_samples[0].nbuffer_size) {
nindex_free_buffer = 0;
} else if (0 == g_samples_buffer[pinput_buffer->nactuator_index]
.actuator_samples[1].nbuffer_size) {
nindex_free_buffer = 1;
} else {
/* No room to store new samples */
DbgOut((KERN_ERR
"tspdrv: no room to store new samples.\n"));
return 0;
}
/* Store the data in the free buffer of the given actuator */
memcpy(
&(g_samples_buffer[pinput_buffer->nactuator_index]
.actuator_samples[nindex_free_buffer]),
&g_cwrite_buffer[i],
(SPI_HEADER_SIZE + pinput_buffer->nbuffer_size));
/* If the no buffer is playing, prepare to play
** g_samples_buffer[pinput_buffer->nactuator_index].
** actuator_samples[nindex_free_buffer]
*/
if (-1 == g_samples_buffer[pinput_buffer->nactuator_index]
.nindex_playing_buffer) {
g_samples_buffer[pinput_buffer->nactuator_index]
.nindex_playing_buffer = nindex_free_buffer;
g_samples_buffer[pinput_buffer->nactuator_index]
.nindex_output_value = 0;
}
/* Increment buffer index */
i += (SPI_HEADER_SIZE + pinput_buffer->nbuffer_size);
}
#ifdef QA_TEST
g_nforcelog[g_nforcelog_index++] = g_cSPIBuffer[0];
if (g_nforcelog_index >= FORCE_LOG_BUFFER_SIZE) {
for (i = 0; i < FORCE_LOG_BUFFER_SIZE; i++) {
printk(KERN_INFO "%d\t%d\n", g_ntime, g_nforcelog[i]);
g_ntime += TIME_INCREMENT;
}
g_nforcelog_index = 0;
}
#endif
/* Start the timer after receiving new output force */
g_bisplaying = true;
VibeOSKernelLinuxStartTimer();
return count;
}
static long ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
#ifdef QA_TEST
int i;
#endif
printk(KERN_DEBUG "tspdrv: %s %d\n", __func__, cmd);
/* DbgOut(KERN_INFO "tspdrv: ioctl cmd[0x%x].\n", cmd); */
switch (cmd) {
case TSPDRV_STOP_KERNEL_TIMER:
/*
** As we send one sample ahead of time, we need to finish
** playing the last sample before stopping the timer.
** So we just set a flag here.
*/
if (true == g_bisplaying)
g_bstoprequested = true;
#ifdef VIBEOSKERNELPROCESSDATA
/* Last data processing to disable amp and stop timer */
VibeOSKernelProcessData(NULL);
#endif
#ifdef QA_TEST
if (g_nforcelog_index) {
for (i = 0; i < g_nforcelog_index; i++) {
printk(KERN_INFO "%d\t%d\n"
, g_ntime, g_nforcelog[i]);
g_ntime += TIME_INCREMENT;
}
}
g_ntime = 0;
g_nforcelog_index = 0;
#endif
break;
case TSPDRV_MAGIC_NUMBER:
#ifdef CONFIG_TACTILE_ASSIST
case TSPDRV_SET_MAGIC_NUMBER:
#endif
filp->private_data = (void *)TSPDRV_MAGIC_NUMBER;
break;
case TSPDRV_ENABLE_AMP:
wake_lock(&vib_wake_lock);
vibe_set_pwm_freq(0);
vibe_pwm_onoff(1);
ImmVibeSPI_ForceOut_AmpEnable(arg);
DbgRecorderReset((arg));
DbgRecord((arg, ";------- TSPDRV_ENABLE_AMP ---------\n"));
break;
case TSPDRV_DISABLE_AMP:
/*
** Small fix for now to handle proper combination of
** TSPDRV_STOP_KERNEL_TIMER and TSPDRV_DISABLE_AMP together
** If a stop was requested, ignore the request as the amp
** will be disabled by the timer proc when it's ready
*/
#ifdef CONFIG_TACTILE_ASSIST
g_bstoprequested = true;
/* Last data processing to disable amp and stop timer */
VibeOSKernelProcessData(NULL);
g_bisplaying = false;
#else
if (!g_bstoprequested)
ImmVibeSPI_ForceOut_AmpDisable(arg);
#endif
wake_unlock(&vib_wake_lock);
break;
case TSPDRV_GET_NUM_ACTUATORS:
return NUM_ACTUATORS;
}
return 0;
}
static int suspend(struct platform_device *pdev, pm_message_t state)
{
int ret;
if (g_bisplaying) {
ret = -EBUSY;
} else {
/* Disable system timers */
vibetonz_clk_off(&pdev->dev);
ret = 0;
}
DbgOut(KERN_DEBUG "tspdrv: %s (%d).\n", __func__, ret);
return ret;
}
static int resume(struct platform_device *pdev)
{
/* Restart system timers */
DbgOut(KERN_DEBUG "tspdrv: %s.\n", __func__);
return 0;
}
static const struct of_device_id vib_motor_match[] = {
{.compatible = "vibrator"},
{}
};
static struct platform_driver tspdrv_driver = {
.probe = tspdrv_probe,
.remove = __devexit_p(tspdrv_remove),
.suspend = suspend,
.resume = resume,
.driver = {
.name = MODULE_NAME,
.owner = THIS_MODULE,
.of_match_table = vib_motor_match,
},
};
static int __init tspdrv_init(void)
{
return platform_driver_register(&tspdrv_driver);
}
static void __exit tspdrv_exit(void)
{
platform_driver_unregister(&tspdrv_driver);
}
late_initcall(tspdrv_init);
module_exit(tspdrv_exit);
/* Module info */
MODULE_AUTHOR("Immersion Corporation");
MODULE_DESCRIPTION("TouchSense Kernel Module");
MODULE_LICENSE("GPL v2");
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