/* drivers/input/touchscreen/gt818_ts.c
*
- * Copyright (C) 2011 Goodix, Inc.
+ * Copyright (C) 2011 Rockcip, Inc.
*
- * Author: Felix
- * Date: 2011.04.28
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
*
+ * 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.
+ *
+ * Author: hhb@rock-chips.com
+ * Date: 2011.06.20
*/
#include <linux/kernel.h>
#include <linux/module.h>
msgs[0].flags = client->flags;
msgs[0].len = 2;
msgs[0].buf = &buf[0];
- msgs[0].scl_rate = 600*1000;
+ msgs[0].scl_rate = GT818_I2C_SCL;
msgs[0].udelay = client->udelay;
msgs[1].addr = client->addr;
msgs[1].flags = client->flags | I2C_M_RD;
msgs[1].len = len-2;
msgs[1].buf = &buf[2];
- msgs[1].scl_rate = 600*1000;
+ msgs[1].scl_rate = GT818_I2C_SCL;
//msgs[1].udelay = client->udelay;
ret = i2c_transfer(client->adapter, msgs, 2);
return ret;
}
-/*******************************************************
-鍔熻兘锛� 鍚戜粠鏈哄啓鏁版嵁
-鍙傛暟锛� client: i2c璁惧锛屽寘鍚澶囧湴鍧� buf[0]锛�棣栧瓧鑺備负鍐欏湴鍧� buf[1]~buf[len]锛氭暟鎹紦鍐插尯
- len锛�鏁版嵁闀垮害
-return锛� 鎵ц娑堟伅鏁�*******************************************************/
/*Function as i2c_master_send */
static int i2c_write_bytes(struct i2c_client *client,u8 *data,int len)
{
msg.flags = client->flags; //鍐欐秷鎭�
msg.len = len;
msg.buf = data;
- msg.scl_rate = 600*1000;
+ msg.scl_rate = GT818_I2C_SCL;
//msg.udelay = client->udelay;
ret = i2c_transfer(client->adapter, &msg, 1);
if(ret < 0)
return ret;
}
-/*******************************************************
-鍔熻兘锛� 鍙戦�鍓嶇紑鍛戒护
- ts: client绉佹湁鏁版嵁缁撴瀯浣�return锛�
- 鎵ц缁撴灉鐮侊紝0琛ㄧず姝ｅ父鎵ц
-*******************************************************/
static int i2c_pre_cmd(struct gt818_ts_data *ts)
{
int ret;
return ret;
}
-/*******************************************************
-鍔熻兘锛� 鍙戦�鍚庣紑鍛戒护
- ts: client绉佹湁鏁版嵁缁撴瀯浣�return锛�
- 鎵ц缁撴灉鐮侊紝0琛ㄧず姝ｅ父鎵ц
-*******************************************************/
static int i2c_end_cmd(struct gt818_ts_data *ts)
{
int ret;
}
-/*******************************************************
-鍔熻兘锛� Guitar鍒濆鍖栧嚱鏁帮紝鐢ㄤ簬鍙戦�閰嶇疆淇℃伅锛岃幏鍙栫増鏈俊鎭�鍙傛暟锛� ts: client绉佹湁鏁版嵁缁撴瀯浣�return锛� 鎵ц缁撴灉鐮侊紝0琛ㄧず姝ｅ父鎵ц
-*******************************************************/
+
static int goodix_init_panel(struct gt818_ts_data *ts)
{
int ret = -1;
// unsigned char i2c_control_buf[3] = {0x06,0x92,0x03};
#if 1
- u8 config_info[] = { //Touch key devlop board
+ u8 config_info[] = {
0x06,0xA2,
0x00,0x02,0x04,0x06,0x08,0x0A,0x0C,0x0E,
0x10,0x12,0x00,0x00,0x10,0x00,0x20,0x00,
}
-/*******************************************************
-鍔熻兘锛� 鑾峰彇鐗堟湰淇℃伅
-鍙傛暟锛� ts: client绉佹湁鏁版嵁缁撴瀯浣�return锛� 鎵ц缁撴灉鐮侊紝0琛ㄧず姝ｅ父鎵ц
-*******************************************************/
+
static int goodix_read_version(struct gt818_ts_data *ts)
{
int ret;
ret = i2c_read_bytes(ts->client, touch_status, sizeof(touch_status)/sizeof(touch_status[0]));
if(ret <= 0) {
-
for(retry = 0; retry < 3; retry++)
{
ret = i2c_pre_cmd(ts);
i2c_read_bytes(ts->client, touch_status, sizeof(touch_status)/sizeof(touch_status[0]));
}
}
-
+ //judge whether the data is ready
if((touch_status[2] & 0x30) != 0x20)
{
printk("%s:DATA_NO_READY\n", __func__);
goto DATA_NO_READY;
}
-
+ //judge whether it is large area touch
if(touch_status[13] & 0x0f)
{
- //printk("%s:touch area is too large\n", __func__);
goto DATA_NO_READY;
}
key_value = touch_status + 15;
key = key_value[2] & 0x0f;
-// printk("finger:%d\n", finger);
if(finger > 0)
{
- //printk("e\n");
point_data = key_value + 3;
for(position = 0; position < (finger*8); position += 8)
coor_point = (u16 *)coor_data;
- //printk("%\n");
for(position = 1; position < MAX_FINGER_NUM + 1; position++)
{
//printk("%s:positon:%d\n", __func__, position);
x = (*(coor_point+3*(position-1)))*SCREEN_MAX_WIDTH/(TOUCH_MAX_WIDTH);
y = (*(coor_point+3*(position-1)+1))*SCREEN_MAX_HEIGHT/(TOUCH_MAX_HEIGHT);
pressure = (*(coor_point+3*(position-1)+2));
- //printk("pressure:%d\n", pressure);
-
if(x < SCREEN_MAX_WIDTH){
x = SCREEN_MAX_WIDTH - x;
}
input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, pressure);
input_mt_sync(ts->input_dev);
syn_flag = 1;
- //printk("position%d: x:%d y:%d\n",position, x, y);
- //printk("$\n");
}
}
}
-/*******************************************************
-鍔熻兘锛� 璁℃椂鍣ㄥ搷搴斿嚱鏁� 鐢辫鏃跺櫒瑙﹀彂锛岃皟搴﹁Е鎽稿睆宸ヤ綔鍑芥暟杩愯锛涗箣鍚庨噸鏂拌鏃�鍙傛暟锛� timer锛氬嚱鏁板叧鑱旂殑璁℃椂鍣�
-return锛� 璁℃椂鍣ㄥ伐浣滄ā寮忥紝HRTIMER_NORESTART琛ㄧず涓嶉渶瑕佽嚜鍔ㄩ噸鍚�********************************************************/
+
static enum hrtimer_restart goodix_ts_timer_func(struct hrtimer *timer)
{
struct gt818_ts_data *ts = container_of(timer, struct gt818_ts_data, timer);
return HRTIMER_NORESTART;
}
-/*******************************************************
-鍔熻兘锛� 涓柇鍝嶅簲鍑芥暟
- 鐢变腑鏂Е鍙戯紝璋冨害瑙︽懜灞忓鐞嗗嚱鏁拌繍琛�鍙傛暟锛� timer锛氬嚱鏁板叧鑱旂殑璁℃椂鍣�
-return锛� 璁℃椂鍣ㄥ伐浣滄ā寮忥紝HRTIMER_NORESTART琛ㄧず涓嶉渶瑕佽嚜鍔ㄩ噸鍚�********************************************************/
+
static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id)
{
struct gt818_ts_data *ts = dev_id;
return IRQ_HANDLED;
}
-/*******************************************************
-鍔熻兘锛� 绠＄悊GT801鐨勭數婧愶紝鍏佽GT801 PLUS杩涘叆鐫＄湢鎴栧皢鍏跺敜閱�鍙傛暟锛�
-on: 0琛ㄧず浣胯兘鐫＄湢锛�涓哄敜閱�return锛� 鏄惁璁剧疆鎴愬姛锛�涓烘垚鍔�
-閿欒鐮侊細-1涓篿2c閿欒锛�2涓篏PIO閿欒锛�EINVAL涓哄弬鏁皁n閿欒
-********************************************************/
-//#if defined(INT_PORT)
static int goodix_ts_power(struct gt818_ts_data * ts, int on)
{
int ret = -1;
struct gt818_platform_data *pdata = ts->client->dev.platform_data;
unsigned char i2c_control_buf[3] = {0x06,0x92,0x01}; //suspend cmd
+ unsigned char i2c_config_buf[3] = {0x06,0x92,0x01};
#ifdef INT_PORT
if(ts != NULL && !ts->use_irq)
{
case 0:
i2c_pre_cmd(ts);
+ // set the io port high level to avoid level change which might stop gt818 from sleeping
+ gpio_direction_output(pdata->gpio_reset, 1);
+ gpio_direction_output(pdata->gpio_pendown, 1);
+ msleep(5);
ret = i2c_write_bytes(ts->client, i2c_control_buf, 3);
if(ret < 0)
{
return ret;
case 1:
+ gpio_direction_input(pdata->gpio_pendown);
+ gpio_pull_updown(pdata->gpio_pendown, 0);
+ msleep(2);
gpio_direction_output(pdata->gpio_reset, 0);
msleep(2);
gpio_direction_input(pdata->gpio_reset);
+ gpio_pull_updown(pdata->gpio_reset, 0);
msleep(30);
ret = i2c_pre_cmd(ts);
else{
printk(KERN_INFO"**gt818 resume fail**\n");
}
+
return ret;
default:
}
}
-/*******************************************************
-鍔熻兘锛� 瑙︽懜灞忔帰娴嬪嚱鏁� 鍦ㄦ敞鍐岄┍鍔ㄦ椂璋冪敤(瑕佹眰瀛樺湪瀵瑰簲鐨刢lient)锛� 鐢ㄤ簬IO,涓柇绛夎祫婧愮敵璇凤紱璁惧娉ㄥ唽锛涜Е鎽稿睆鍒濆鍖栫瓑宸ヤ綔
-鍙傛暟锛� client锛氬緟椹卞姩鐨勮澶囩粨鏋勪綋
- id锛氳澶嘔D
-return锛� 鎵ц缁撴灉鐮侊紝0琛ㄧず姝ｅ父鎵ц
-********************************************************/
+
+
static int goodix_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
int ret = 0;
}
rk29_mux_api_set(pdata->resetpin_iomux_name, pdata->resetpin_iomux_mode);
#if 1
- for(retry = 0; retry < 3; retry++)
+ for(retry = 0; retry < 4; retry++)
{
gpio_direction_output(pdata->gpio_reset, 0);
msleep(2);
ret = goodix_init_panel(ts);
dev_info(&client->dev,"the config ret is :%d\n", ret);
msleep(20);
- if(ret != 0) //Initiall failed
+ if(ret < 0) //Initiall failed
continue;
else
break;
}
- if(ret != 0) {
+ if(ret < 0) {
ts->bad_data = 1;
goto err_init_godix_ts;
}
#define GT801_PLUS_IRQ_TYPE IRQ_TYPE_LEVEL_HIGH
#endif
- ret = request_irq(client->irq, goodix_ts_irq_handler, GT801_PLUS_IRQ_TYPE,
+ ret = request_irq(client->irq, goodix_ts_irq_handler, GT801_PLUS_IRQ_TYPE,
client->name, ts);
if (ret != 0) {
dev_err(&client->dev,"Cannot allocate ts INT!ERRNO:%d\n", ret);
}
-/*******************************************************
-鍔熻兘锛� 椹卞姩璧勬簮閲婃斁
-鍙傛暟锛� client锛氳澶囩粨鏋勪綋
-return锛� 鎵ц缁撴灉鐮侊紝0琛ㄧず姝ｅ父鎵ц
-********************************************************/
static int goodix_ts_remove(struct i2c_client *client)
{
struct gt818_ts_data *ts = i2c_get_clientdata(client);
return 0;
}
-//鍋滅敤璁惧
+
static int goodix_ts_suspend(struct i2c_client *client, pm_message_t mesg)
{
int ret;
//ret = cancel_work_sync(&ts->work);
//if(ret && ts->use_irq)
//enable_irq(client->irq);
- if (ts->power) { /* 蹇呴』鍦ㄥ彇娑坵ork鍚庡啀鎵ц锛岄伩鍏嶅洜GPIO瀵艰嚧鍧愭爣澶勭悊浠ｇ爜姝诲惊鐜�*/
+ if (ts->power) {
ret = ts->power(ts, 0);
if (ret < 0)
printk(KERN_ERR "goodix_ts_resume power off failed\n");
return 0;
}
-//閲嶆柊鍞ら啋
+
static int goodix_ts_resume(struct i2c_client *client)
{
int ret;
#endif
-//鍙敤浜庤椹卞姩鐨�璁惧鍚嶁�璁惧ID 鍒楄〃
//only one client
static const struct i2c_device_id goodix_ts_id[] = {
{ GOODIX_I2C_NAME, 0 },
{ }
};
-//璁惧椹卞姩缁撴瀯浣�
+
static struct i2c_driver goodix_ts_driver = {
.probe = goodix_ts_probe,
.remove = goodix_ts_remove,
},
};
-/*******************************************************
-鍔熻兘锛� 椹卞姩鍔犺浇鍑芥暟
-return锛� 鎵ц缁撴灉鐮侊紝0琛ㄧず姝ｅ父鎵ц
-********************************************************/
+
static int __devinit goodix_ts_init(void)
{
int ret;
return ret;
}
-/*******************************************************
-鍔熻兘锛� 椹卞姩鍗歌浇鍑芥暟
-鍙傛暟锛� client锛氳澶囩粨鏋勪綋
-********************************************************/
+
static void __exit goodix_ts_exit(void)
{
printk(KERN_ALERT "Touchscreen driver of guitar exited.\n");
module_exit(goodix_ts_exit);
MODULE_DESCRIPTION("Goodix Touchscreen Driver");
+MODULE_AUTHOR("hhb@rock-chips.com")
MODULE_LICENSE("GPL");
projects / firefly-linux-kernel-4.4.55.git / commitdiff