--- /dev/null
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/earlysuspend.h>
+#include <linux/hrtimer.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <mach/iomux.h>
+#include <linux/platform_device.h>
+
+#include "ili2102_ts.h"
+
+
+#if 1
+ #define DBG(msg...) printk(msg);
+#else
+ #define DBG(msg...)
+#endif
+
+#define TOUCH_NUMBER 2
+
+static int touch_state[TOUCH_NUMBER] = {TOUCH_UP,TOUCH_UP};
+static struct workqueue_struct *ili2102_wq;
+
+struct ili2102_ts_data {
+ u16 model; /* 801. */
+ bool swap_xy; /* swap x and y axes */
+ u16 x_min, x_max;
+ u16 y_min, y_max;
+ uint16_t addr;
+ int use_irq;
+ int gpio_pendown;
+ int gpio_reset;
+ int gpio_reset_active_low;
+ int pendown_iomux_mode;
+ int resetpin_iomux_mode;
+ char pendown_iomux_name[IOMUX_NAME_SIZE];
+ char resetpin_iomux_name[IOMUX_NAME_SIZE];
+ char phys[32];
+ char name[32];
+ struct i2c_client *client;
+ struct input_dev *input_dev;
+ struct hrtimer timer;
+ struct work_struct work;
+ struct early_suspend early_suspend;
+};
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+static void ili2102_ts_early_suspend(struct early_suspend *h);
+static void ili2102_ts_late_resume(struct early_suspend *h);
+#endif
+
+static int verify_coord(struct ili2102_ts_data *ts,unsigned int *x,unsigned int *y)
+{
+
+ DBG("%s:(%d/%d)\n",__FUNCTION__,*x, *y);
+ if((*x< ts->x_min) || (*x > ts->x_max))
+ return -1;
+
+ if((*y< ts->y_min) || (*y > ts->y_max))
+ return -1;
+
+ return 0;
+}
+static int ili2102_init_panel(struct ili2102_ts_data *ts)
+{
+ return 0;
+}
+static void ili2102_test(struct i2c_client *client)
+{
+ int i;
+ int ret;
+ struct i2c_msg msg[2];
+ uint8_t start_reg;
+ uint8_t buf[4];
+
+ start_reg = 0x31;
+
+ msg[0].addr =client->addr;
+ msg[0].flags = 0;
+ msg[0].len = 1;
+ msg[0].buf = &start_reg;
+
+ msg[1].addr = client->addr;
+ msg[1].flags = I2C_M_RD;
+ msg[1].len = 3;
+ msg[1].buf = buf;
+
+
+ ret = i2c_transfer(client->adapter, msg, 2);
+
+ if (ret < 0) {
+ printk("ili2102_test:i2c_transfer fail =%d\n",ret);
+ }
+
+ for(i=0; i<3; i++){
+ printk("ili2102_test:buf[%d]=%x\n", i, buf[i]);
+ }
+
+
+
+}
+static void ili2102_ts_work_func(struct work_struct *work)
+{
+ int i,ret;
+ int syn_flag = 0;
+ unsigned int x, y;
+ struct i2c_msg msg[2];
+ uint8_t start_reg;
+ uint32_t buf[4];
+ struct ili2102_ts_data *ts = container_of(work, struct ili2102_ts_data, work);
+
+ DBG("ili2102_ts_work_func\n");
+
+ start_reg = 0x86;
+
+ msg[0].addr = ts->client->addr;
+ msg[0].flags = 0;
+ msg[0].len = 1;
+ msg[0].buf = &start_reg;
+
+ msg[1].addr = ts->client->addr;
+ msg[1].flags = I2C_M_RD;
+ msg[1].len = 4 * TOUCH_NUMBER;
+ msg[1].buf = (u8*)&buf[0];
+
+ ret = i2c_transfer(ts->client->adapter, msg, 2);
+
+ if (ret < 0) {
+ for(i=0; i<TOUCH_NUMBER; i++) buf[i] = 0xffffffff;
+ printk("ili2102_ts_work_func:i2c_transfer fail =%d\n",ret);
+ }
+
+ for(i=0; i<TOUCH_NUMBER; i++){
+ if(buf[i] == 0xffffffff || buf[i] == 0){
+ if (touch_state[i] == TOUCH_DOWN)
+ {
+ DBG("ili2102_ts_work_func:buf[%d]=%d\n",i,buf[i]);
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0); //Finger Size
+ input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0); //Touch Size
+ input_mt_sync(ts->input_dev);
+ syn_flag = 1;
+ touch_state[i] = TOUCH_UP;
+ }
+
+ }
+ else{
+ x = ((buf[i] & 0xff) << 8) | ((buf[i] & 0xff00) >> 8);
+ y = ((buf[i] & 0xff0000) >> 8) | ((buf[i] & 0xff000000) >> 24);
+
+ if (ts->swap_xy)
+ swap(x, y);
+
+ if (verify_coord(ts,&x,&y))
+ goto out;
+
+ DBG("buf[%d]=%x X = %d, Y = %d\n", i, buf[i], x, y);
+
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 1); //Finger Size
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x);
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y);
+ input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 5); //Touch Size
+ input_mt_sync(ts->input_dev);
+ syn_flag = 1;
+ touch_state[i] = TOUCH_DOWN;
+ }
+ }
+
+ if(syn_flag)
+ input_sync(ts->input_dev);
+out:
+
+ if (ts->use_irq)
+ enable_irq(ts->client->irq);
+
+ return;
+}
+
+static enum hrtimer_restart ili2102_ts_timer_func(struct hrtimer *timer)
+{
+ struct ili2102_ts_data *ts = container_of(timer, struct ili2102_ts_data, timer);
+ DBG("ili2102_ts_timer_func\n");
+
+ queue_work(ili2102_wq, &ts->work);
+
+ hrtimer_start(&ts->timer, ktime_set(0, 12500000), HRTIMER_MODE_REL);
+ return HRTIMER_NORESTART;
+}
+
+static irqreturn_t ili2102_ts_irq_handler(int irq, void *dev_id)
+{
+ struct ili2102_ts_data *ts = dev_id;
+ DBG("ili2102_ts_irq_handler=%d,%d\n",ts->client->irq,ts->use_irq);
+
+ //if (ts->use_irq)
+ disable_irq_nosync(ts->client->irq); //disable_irq(ts->client->irq);
+ queue_work(ili2102_wq, &ts->work);
+ return IRQ_HANDLED;
+}
+
+static int __devinit setup_resetPin(struct i2c_client *client, struct ili2102_ts_data *ts)
+{
+ struct ili2102_platform_data *pdata = client->dev.platform_data;
+ int err;
+
+ ts->gpio_reset = pdata->gpio_reset;
+ strcpy(ts->resetpin_iomux_name,pdata->resetpin_iomux_name);
+ ts->resetpin_iomux_mode = pdata->resetpin_iomux_mode;
+ ts->gpio_reset_active_low = pdata->gpio_reset_active_low;
+
+ DBG("%s=%d,%s,%d,%d\n",__FUNCTION__,ts->gpio_reset,ts->resetpin_iomux_name,ts->resetpin_iomux_mode,ts->gpio_reset_active_low);
+
+ if (!gpio_is_valid(ts->gpio_reset)) {
+ dev_err(&client->dev, "no gpio_reset?\n");
+ return -EINVAL;
+ }
+
+ rk29_mux_api_set(ts->resetpin_iomux_name,ts->resetpin_iomux_mode);
+ err = gpio_request(ts->gpio_reset, "ili2102_resetPin");
+ if (err) {
+ dev_err(&client->dev, "failed to request resetPin GPIO%d\n",
+ ts->gpio_reset);
+ return err;
+ }
+
+ gpio_set_value(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_LOW:GPIO_HIGH);
+
+ err = gpio_direction_output(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_LOW:GPIO_HIGH);
+ if (err) {
+ dev_err(&client->dev, "failed to pulldown resetPin GPIO%d\n",
+ ts->gpio_reset);
+ gpio_free(ts->gpio_reset);
+ return err;
+ }
+
+ mdelay(100);
+
+ gpio_set_value(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_HIGH:GPIO_LOW);
+
+ mdelay(100);
+
+ return 0;
+}
+
+static int __devinit setup_pendown(struct i2c_client *client, struct ili2102_ts_data *ts)
+{
+ int err;
+ struct ili2102_platform_data *pdata = client->dev.platform_data;
+
+ if (!client->irq) {
+ dev_dbg(&client->dev, "no IRQ?\n");
+ return -ENODEV;
+ }
+
+ if (!gpio_is_valid(pdata->gpio_pendown)) {
+ dev_err(&client->dev, "no gpio_pendown?\n");
+ return -EINVAL;
+ }
+
+ ts->gpio_pendown = pdata->gpio_pendown;
+ strcpy(ts->pendown_iomux_name,pdata->pendown_iomux_name);
+ ts->pendown_iomux_mode = pdata->pendown_iomux_mode;
+
+ DBG("%s=%d,%s,%d\n",__FUNCTION__,ts->gpio_pendown,ts->pendown_iomux_name,ts->pendown_iomux_mode);
+
+ if (!gpio_is_valid(ts->gpio_pendown)) {
+ dev_err(&client->dev, "no gpio_pendown?\n");
+ return -EINVAL;
+ }
+
+ rk29_mux_api_set(ts->pendown_iomux_name,ts->pendown_iomux_mode);
+ err = gpio_request(ts->gpio_pendown, "ili2102_pendown");
+ if (err) {
+ dev_err(&client->dev, "failed to request pendown GPIO%d\n",
+ ts->gpio_pendown);
+ return err;
+ }
+
+ err = gpio_pull_updown(ts->gpio_pendown, GPIOPullUp);
+ if (err) {
+ dev_err(&client->dev, "failed to pullup pendown GPIO%d\n",
+ ts->gpio_pendown);
+ gpio_free(ts->gpio_pendown);
+ return err;
+ }
+ return 0;
+}
+static int ili2102_chip_Init(struct i2c_client *client)
+{
+ uint8_t buf0[6];
+ int ret = 0;
+
+#if (0)
+ /* = */
+ buf0[0] = 0x71;
+ buf0[1] = 0x00;//30MHz
+ buf0[2] = 0x01;
+ buf0[3] = 0x07;
+ buf0[4] = 0x0D;
+ buf0[5] = 0x00;
+
+ ret = i2c_master_send(client, buf0, 6);
+ if(ret < 0) {
+ printk(KERN_ERR "i2c_master_send failed\n");
+ }
+
+ /* = */
+ buf0[0] = 0x76;
+ buf0[1] = 0x01;
+ buf0[2] = 0x1B;
+ ret = i2c_master_send(client, buf0, 3);
+ if(ret < 0) {
+ printk(KERN_ERR "i2c_master_send failed\n");
+ }
+#endif /* (0) */
+
+
+ /* IC internal power on */
+ buf0[0] = 0x81;
+ ret = i2c_master_send(client, buf0, 1);
+ if(ret < 0) {
+ printk(KERN_ERR "i2c_master_send failed\n");
+ }
+
+ msleep(120);
+
+ /* MCU power on */
+ buf0[0] = 0x35;
+ buf0[1] = 0x02;
+ ret = i2c_master_send(client, buf0, 2);
+ if(ret < 0) {
+ printk(KERN_ERR "i2c_master_send failed\n");
+ }
+
+ msleep(10);
+
+ /* flash power on */
+ buf0[0] = 0x36;
+ buf0[1] = 0x01;
+ ret = i2c_master_send(client, buf0, 2);
+ if(ret < 0) {
+ printk(KERN_ERR "i2c_master_send failed\n");
+ }
+
+ msleep(10);
+
+ ili2102_test(client);
+ msleep(10);
+
+ /* Start touch panel sensing */
+ buf0[0] = 0x83;
+ ret = i2c_master_send(client, buf0, 1);
+ if(ret < 0) {
+ printk(KERN_ERR "i2c_master_send failed\n");
+ }
+
+ msleep(120);
+
+ return ret;
+}
+static int ili2102_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ struct ili2102_ts_data *ts;
+ struct ili2102_platform_data *pdata = client->dev.platform_data;
+ int ret = 0;
+
+ printk("ili2102 TS probe\n"); //[Step 1]
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ printk(KERN_ERR "ili2102_ts_probe: need I2C_FUNC_I2C\n");
+ ret = -ENODEV;
+ goto err_check_functionality_failed;
+ }
+
+ ts = kzalloc(sizeof(*ts), GFP_KERNEL);
+ if (ts == NULL) {
+ ret = -ENOMEM;
+ goto err_alloc_data_failed;
+ }
+ INIT_WORK(&ts->work, ili2102_ts_work_func);
+ ts->client = client;
+ i2c_set_clientdata(client, ts);
+
+ ret = setup_resetPin(client,ts);
+ if(ret)
+ {
+ printk("ili2102 TS setup_resetPin fail\n");
+ goto err_alloc_data_failed;
+ }
+
+ ret=ili2102_chip_Init(ts->client);
+ if(ret<0)
+ {
+ printk("%s:chips init failed\n",__FUNCTION__);
+ goto err_resetpin_failed;
+ }
+
+ /* allocate input device */
+ ts->input_dev = input_allocate_device();
+ if (ts->input_dev == NULL) {
+ ret = -ENOMEM;
+ printk(KERN_ERR "ili2102_ts_probe: Failed to allocate input device\n");
+ goto err_input_dev_alloc_failed;
+ }
+
+ ts->model = pdata->model ? : 801;
+ ts->swap_xy = pdata->swap_xy;
+ ts->x_min = pdata->x_min;
+ ts->x_max = pdata->x_max;
+ ts->y_min = pdata->y_min;
+ ts->y_max = pdata->y_max;
+ snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(&client->dev));
+ snprintf(ts->name, sizeof(ts->name), "gt%d-touchscreen", ts->model);
+ ts->input_dev->phys = ts->phys;
+ ts->input_dev->name = ts->name;
+ ts->input_dev->dev.parent = &client->dev;
+
+ ts->input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_ABS);
+ //ts->input_dev->absbit[0] =
+ //BIT(ABS_MT_POSITION_X) | BIT(ABS_MT_POSITION_Y) |
+ //BIT(ABS_MT_TOUCH_MAJOR) | BIT(ABS_MT_WIDTH_MAJOR); // for android
+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X,
+ ts->x_min ? : 0,
+ ts->x_max ? : 480,
+ 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y,
+ ts->y_min ? : 0,
+ ts->y_max ? : 800,
+ 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 1, 0, 0); //Finger Size
+ input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 10, 0, 0); //Touch Size
+
+ /* ts->input_dev->name = ts->keypad_info->name; */
+ ret = input_register_device(ts->input_dev);
+ if (ret) {
+ printk(KERN_ERR "ili2102_ts_probe: Unable to register %s input device\n", ts->input_dev->name);
+ goto err_input_register_device_failed;
+ }
+
+ client->irq = gpio_to_irq(client->irq);
+ if (client->irq) {
+ ret = setup_pendown(client,ts);
+ if(ret)
+ {
+ printk("ili2102 TS setup_pendown fail\n");
+ goto err_input_register_device_failed;
+ }
+ ret = request_irq(client->irq, ili2102_ts_irq_handler, IRQF_DISABLED | IRQF_TRIGGER_LOW, client->name, ts);
+ if (ret == 0) {
+ DBG("ili2102 TS register ISR (irq=%d)\n", client->irq);
+ ts->use_irq = 1;
+ }
+ else
+ dev_err(&client->dev, "request_irq failed\n");
+ }
+
+ if (!ts->use_irq) {
+ hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ ts->timer.function = ili2102_ts_timer_func;
+ hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
+ }
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
+ ts->early_suspend.suspend = ili2102_ts_early_suspend;
+ ts->early_suspend.resume = ili2102_ts_late_resume;
+ register_early_suspend(&ts->early_suspend);
+#endif
+
+ printk(KERN_INFO "ili2102_ts_probe: Start touchscreen %s in %s mode\n", ts->input_dev->name, ts->use_irq ? "interrupt" : "polling");
+
+ return 0;
+
+err_input_register_device_failed:
+ input_free_device(ts->input_dev);
+err_resetpin_failed:
+ gpio_free(ts->gpio_reset);
+err_input_dev_alloc_failed:
+ kfree(ts);
+err_alloc_data_failed:
+err_check_functionality_failed:
+ return ret;
+}
+
+static int ili2102_ts_remove(struct i2c_client *client)
+{
+ struct ili2102_ts_data *ts = i2c_get_clientdata(client);
+ unregister_early_suspend(&ts->early_suspend);
+ if (ts->use_irq)
+ free_irq(client->irq, ts);
+ else
+ hrtimer_cancel(&ts->timer);
+ input_unregister_device(ts->input_dev);
+ kfree(ts);
+ return 0;
+}
+
+static int ili2102_ts_suspend(struct i2c_client *client, pm_message_t mesg)
+{
+ int ret;
+ struct ili2102_ts_data *ts = i2c_get_clientdata(client);
+
+ printk("ili2102 TS Suspend\n");
+
+ if (ts->use_irq)
+ disable_irq(client->irq);
+ else
+ hrtimer_cancel(&ts->timer);
+
+ ret = cancel_work_sync(&ts->work);
+ if (ret && ts->use_irq) /* if work was pending disable-count is now 2 */
+ enable_irq(client->irq);
+
+ // TODO do suspend
+ return 0;
+}
+
+static int ili2102_ts_resume(struct i2c_client *client)
+{
+ struct ili2102_ts_data *ts = i2c_get_clientdata(client);
+
+ ili2102_init_panel(ts);
+
+ //TODO do resume
+
+ printk("ili2102 TS Resume\n");
+
+ if (ts->use_irq) {
+ printk("enabling IRQ %d\n", client->irq);
+ enable_irq(client->irq);
+ }
+ else
+ hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
+
+ return 0;
+}
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+static void ili2102_ts_early_suspend(struct early_suspend *h)
+{
+ struct ili2102_ts_data *ts;
+ ts = container_of(h, struct ili2102_ts_data, early_suspend);
+ ili2102_ts_suspend(ts->client, PMSG_SUSPEND);
+}
+
+static void ili2102_ts_late_resume(struct early_suspend *h)
+{
+ struct ili2102_ts_data *ts;
+ ts = container_of(h, struct ili2102_ts_data, early_suspend);
+ ili2102_ts_resume(ts->client);
+}
+#endif
+
+#define ILI2102_TS_NAME "ili2102_ts"
+
+static const struct i2c_device_id ili2102_ts_id[] = {
+ { ILI2102_TS_NAME, 0 },
+ { }
+};
+
+static struct i2c_driver ili2102_ts_driver = {
+ .probe = ili2102_ts_probe,
+ .remove = ili2102_ts_remove,
+#ifndef CONFIG_HAS_EARLYSUSPEND
+ .suspend = ili2102_ts_suspend,
+ .resume = ili2102_ts_resume,
+#endif
+ .id_table = ili2102_ts_id,
+ .driver = {
+ .name = ILI2102_TS_NAME,
+ },
+};
+
+static int __devinit ili2102_ts_init(void)
+{
+ printk("ili2102 TS init\n"); //[Step 0]
+ ili2102_wq = create_singlethread_workqueue("ili2102_wq");
+ if (!ili2102_wq)
+ return -ENOMEM;
+ return i2c_add_driver(&ili2102_ts_driver);
+}
+
+static void __exit ili2102_ts_exit(void)
+{
+ printk("ili2102 TS exit\n");
+ i2c_del_driver(&ili2102_ts_driver);
+ if (ili2102_wq)
+ destroy_workqueue(ili2102_wq);
+}
+
+module_init(ili2102_ts_init);
+module_exit(ili2102_ts_exit);
+
+MODULE_DESCRIPTION("ili2102 Touchscreen Driver");
+MODULE_LICENSE("GPL");
projects / firefly-linux-kernel-4.4.55.git / commitdiff