--- /dev/null
+/*
+ * drivers/input/touchscreen/gslX680.c
+ *
+ * Copyright (c) 2012 Shanghai Basewin
+ * Guan Yuwei<guanyuwei@basewin.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/hrtimer.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/async.h>
+#include <linux/irq.h>
+#include <linux/workqueue.h>
+#include <linux/proc_fs.h>
+#include <linux/input/mt.h>
+#include "rockchip_gslX680_rk3128.h"
+#include <linux/of_gpio.h>
+#include <linux/gpio.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include "tp_suspend.h"
+
+#define GPIO_HIGH 1
+#define GPIO_LOW 0
+
+/* #define GSL_DEBUG */
+/* #define GSL_TIMER */
+#define REPORT_DATA_ANDROID_4_0
+
+/* #define HAVE_TOUCH_KEY */
+
+#define GSLX680_I2C_NAME "gslX680"
+#define GSLX680_I2C_ADDR 0x40
+
+/* #define IRQ_PORT RK2928_PIN1_PB0 */
+/* #define WAKE_PORT RK2928_PIN0_PD3 */
+
+#define GSL_DATA_REG 0x80
+#define GSL_STATUS_REG 0xe0
+#define GSL_PAGE_REG 0xf0
+
+#define PRESS_MAX 255
+#define MAX_FINGERS 5
+#define MAX_CONTACTS 10
+#define DMA_TRANS_LEN 0x20
+/* #define FILTER_POINT */
+#ifdef FILTER_POINT
+#define FILTER_MAX 6
+#endif
+
+#define WRITE_I2C_SPEED (350*1000)
+#define I2C_SPEED (200*1000)
+
+
+
+#define CLOSE_TP_POWER 0
+
+#if CLOSE_TP_POWER
+static void set_tp_power(bool flag);
+#endif
+
+#ifdef HAVE_TOUCH_KEY
+static u16 key;
+static int key_state_flag;
+
+
+struct key_data {
+ u16 key;
+ u16 x_min;
+ u16 x_max;
+ u16 y_min;
+ u16 y_max;
+};
+
+const u16 key_array[] = {
+ KEY_BACK,
+ KEY_HOME,
+ KEY_MENU,
+ KEY_SEARCH,
+ };
+
+#define MAX_KEY_NUM (sizeof(key_array)/sizeof(key_array[0]))
+
+struct key_data gsl_key_data[MAX_KEY_NUM] = {
+ {KEY_BACK, 2048, 2048, 2048, 2048},
+ {KEY_HOME, 2048, 2048, 2048, 2048},
+ {KEY_MENU, 2048, 2048, 2048, 2048},
+ {KEY_SEARCH, 2048, 2048, 2048, 2048},
+};
+#endif
+
+struct gsl_ts_data {
+ u8 x_index;
+ u8 y_index;
+ u8 z_index;
+ u8 id_index;
+ u8 touch_index;
+ u8 data_reg;
+ u8 status_reg;
+ u8 data_size;
+ u8 touch_bytes;
+ u8 update_data;
+ u8 touch_meta_data;
+ u8 finger_size;
+};
+
+static struct gsl_ts_data devices[] = {
+ {
+ .x_index = 6,
+ .y_index = 4,
+ .z_index = 5,
+ .id_index = 7,
+ .data_reg = GSL_DATA_REG,
+ .status_reg = GSL_STATUS_REG,
+ .update_data = 0x4,
+ .touch_bytes = 4,
+ .touch_meta_data = 4,
+ .finger_size = 70,
+ },
+};
+
+struct gsl_ts {
+ struct i2c_client *client;
+ struct input_dev *input;
+ struct work_struct work;
+ struct workqueue_struct *wq;
+ struct gsl_ts_data *dd;
+ u8 *touch_data;
+ u8 device_id;
+ int irq;
+#if defined(CONFIG_HAS_EARLYSUSPEND)
+ struct early_suspend early_suspend;
+#endif
+#ifdef GSL_TIMER
+ struct timer_list gsl_timer;
+#endif
+ int reset_gpio;
+};
+
+static struct gsl_ts *g_gsl_ts;
+
+#ifdef GSL_DEBUG
+#define print_info(fmt, args...) printk(fmt, ##args)
+#else
+#define print_info(fmt, args...)
+#endif
+
+static int ts_global_reset_pin;
+
+static u32 id_sign[MAX_CONTACTS+1] = {0};
+static u8 id_state_flag[MAX_CONTACTS+1] = {0};
+static u8 id_state_old_flag[MAX_CONTACTS+1] = {0};
+static u16 x_old[MAX_CONTACTS+1] = {0};
+static u16 y_old[MAX_CONTACTS+1] = {0};
+static u16 x_new;
+static u16 y_new;
+
+int i2c_master_normal_send(const struct i2c_client *client, const char *buf, int count, int scl_rate)
+{
+ int ret;
+ struct i2c_adapter *adap = client->adapter;
+ struct i2c_msg msg;
+
+ msg.addr = client->addr;
+ msg.flags = client->flags;
+ msg.len = count;
+ msg.buf = (char *)buf;
+ msg.scl_rate = scl_rate;
+ ret = i2c_transfer(adap, &msg, 1);
+ return (ret == 1) ? count : ret;
+}
+
+int i2c_master_normal_recv(const struct i2c_client *client, char *buf, int count, int scl_rate)
+{
+ struct i2c_adapter *adap = client->adapter;
+ struct i2c_msg msg;
+ int ret;
+
+ msg.addr = client->addr;
+ msg.flags = client->flags | I2C_M_RD;
+ msg.len = count;
+ msg.buf = (char *)buf;
+ msg.scl_rate = scl_rate;
+
+ ret = i2c_transfer(adap, &msg, 1);
+
+ return (ret == 1) ? count : ret;
+}
+
+static int gslX680_shutdown_low(void)
+{
+ gpio_direction_output(ts_global_reset_pin, GPIO_LOW);
+ gpio_set_value(ts_global_reset_pin, GPIO_LOW);
+ return 0;
+}
+
+static int gslX680_shutdown_high(void)
+{
+ gpio_direction_output(ts_global_reset_pin, GPIO_HIGH);
+ gpio_set_value(ts_global_reset_pin, GPIO_HIGH);
+ return 0;
+}
+static inline u16 join_bytes(u8 a, u8 b)
+{
+ u16 ab = 0;
+
+ ab = ab | a;
+ ab = ab << 8 | b;
+ return ab;
+}
+
+static u32 gsl_write_interface(struct i2c_client *client, const u8 reg, u8 *buf, u32 num)
+{
+ struct i2c_msg xfer_msg[1];
+
+ buf[0] = reg;
+
+ xfer_msg[0].addr = client->addr;
+ xfer_msg[0].len = num + 1;
+ xfer_msg[0].flags = client->flags & I2C_M_TEN;
+ xfer_msg[0].buf = buf;
+ xfer_msg[0].scl_rate = WRITE_I2C_SPEED;
+
+ return i2c_transfer(client->adapter, xfer_msg, 1) == 1 ? 0 : -EFAULT;
+}
+
+static int gsl_ts_write(struct i2c_client *client, u8 addr, u8 *pdata, int datalen)
+{
+ int ret = 0;
+ u8 tmp_buf[128];
+ unsigned int bytelen;
+
+ bytelen = 0;
+
+ if (datalen > 125) {
+ printk("%s too big datalen = %d!\n", __func__, datalen);
+ return -1;
+ }
+
+ tmp_buf[0] = addr;
+ bytelen++;
+ if (datalen != 0 && pdata != NULL) {
+ memcpy(&tmp_buf[bytelen], pdata, datalen);
+ bytelen += datalen;
+ }
+ ret = i2c_master_normal_send(client, tmp_buf, bytelen, I2C_SPEED);
+ return ret;
+}
+
+static int gsl_ts_read(struct i2c_client *client, u8 addr, u8 *pdata, unsigned int datalen)
+{
+ int ret = 0;
+
+ if (datalen > 126) {
+ printk("%s too big datalen = %d!\n", __func__, datalen);
+ return -1;
+ }
+
+ ret = gsl_ts_write(client, addr, NULL, 0);
+ if (ret < 0) {
+ printk("%s set data address fail!\n", __func__);
+ return ret;
+ }
+ return i2c_master_normal_recv(client, pdata, datalen, I2C_SPEED);
+}
+
+
+static __inline__ void fw2buf(u8 *buf, const u32 *fw)
+{
+ u32 *u32_buf = (int *)buf;
+ *u32_buf = *fw;
+}
+
+static void gsl_load_fw(struct i2c_client *client)
+{
+ u8 buf[DMA_TRANS_LEN*4 + 1] = {0};
+ u8 send_flag = 1;
+ u8 *cur = buf + 1;
+ u32 source_line = 0;
+ u32 source_len;
+ u8 read_buf[4] = {0};
+ const struct fw_data *ptr_fw;
+ printk("=============gsl_load_fw start==============\n");
+
+#ifdef GSL1680E_COMPATIBLE
+ msleep(50);
+ gsl_ts_read(client, 0xfc, read_buf, 4);
+
+
+ if (read_buf[2] != 0x82 && read_buf[2] != 0x88) {
+ msleep(100);
+ gsl_ts_read(client, 0xfc, read_buf, 4);
+ }
+ if (read_buf[2] == 0x82) {
+ ptr_fw = GSL1680E_FW;
+ source_len = ARRAY_SIZE(GSL1680E_FW);
+ } else
+#endif
+ {
+ ptr_fw = GSLX680_FW;
+ source_len = ARRAY_SIZE(GSLX680_FW);
+ }
+
+ for (source_line = 0; source_line < source_len; source_line++) {
+ /* init page trans, set the page val */
+ if (GSL_PAGE_REG == ptr_fw[source_line].offset) {
+ fw2buf(cur, &ptr_fw[source_line].val);
+ gsl_write_interface(client, GSL_PAGE_REG, buf, 4);
+ send_flag = 1;
+ } else {
+ if (1 == send_flag % (DMA_TRANS_LEN < 0x20 ? DMA_TRANS_LEN : 0x20))
+ buf[0] = (u8)ptr_fw[source_line].offset;
+
+ fw2buf(cur, &ptr_fw[source_line].val);
+ cur += 4;
+
+ if (0 == send_flag % (DMA_TRANS_LEN < 0x20 ? DMA_TRANS_LEN : 0x20)) {
+ gsl_write_interface(client, buf[0], buf, cur - buf - 1);
+ cur = buf + 1;
+ }
+
+ send_flag++;
+ }
+ }
+
+ printk("=============gsl_load_fw end==============\n");
+}
+
+
+static void startup_chip(struct i2c_client *client)
+{
+ u8 tmp = 0x00;
+ u8 buf[4] = {0x00};
+
+ buf[3] = 0x01;
+ buf[2] = 0xfe;
+ buf[1] = 0x10;
+ buf[0] = 0x00;
+ gsl_ts_write(client, 0xf0, buf, sizeof(buf));
+ buf[3] = 0x00;
+ buf[2] = 0x00;
+ buf[1] = 0x00;
+ buf[0] = 0x0f;
+ gsl_ts_write(client, 0x04, buf, sizeof(buf));
+ msleep(20);
+ gsl_ts_write(client, 0xe0, &tmp, 1);
+ msleep(10);
+}
+
+static void reset_chip(struct i2c_client *client)
+{
+ u8 tmp = 0x88;
+ u8 buf[4] = {0x00};
+
+ gsl_ts_write(client, 0xe0, &tmp, sizeof(tmp));
+ msleep(20);
+ tmp = 0x04;
+ gsl_ts_write(client, 0xe4, &tmp, sizeof(tmp));
+ msleep(10);
+ gsl_ts_write(client, 0xbc, buf, sizeof(buf));
+ msleep(10);
+}
+
+static void clr_reg(struct i2c_client *client)
+{
+ u8 write_buf[4] = {0};
+
+ write_buf[0] = 0x88;
+ gsl_ts_write(client, 0xe0, &write_buf[0], 1);
+ msleep(20);
+ write_buf[0] = 0x01;
+ gsl_ts_write(client, 0x80, &write_buf[0], 1);
+ msleep(5);
+ write_buf[0] = 0x04;
+ gsl_ts_write(client, 0xe4, &write_buf[0], 1);
+ msleep(5);
+ write_buf[0] = 0x00;
+ gsl_ts_write(client, 0xe0, &write_buf[0], 1);
+ msleep(20);
+}
+
+static void init_chip(struct i2c_client *client)
+{
+ gslX680_shutdown_low();
+ msleep(20);
+ gslX680_shutdown_high();
+ msleep(20);
+ clr_reg(client);
+ reset_chip(client);
+ gsl_load_fw(client);
+ startup_chip(client);
+ reset_chip(client);
+ startup_chip(client);
+}
+
+static void check_mem_data(struct i2c_client *client)
+{
+ u8 read_buf[4] = {0};
+
+ msleep(50);
+ gsl_ts_read(client, 0xb0, read_buf, sizeof(read_buf));
+
+ if (read_buf[3] != 0x5a || read_buf[2] != 0x5a || read_buf[1] != 0x5a || read_buf[0] != 0x5a) {
+ printk("#########check mem read 0xb0 = %x %x %x %x #########\n", read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
+ #if CLOSE_TP_POWER
+ set_tp_power(false);
+ msleep(200);
+ set_tp_power(true);
+ msleep(100);
+ #endif
+ init_chip(client);
+ }
+}
+
+static void record_point(u16 x, u16 y , u8 id)
+{
+ u16 x_err = 0;
+ u16 y_err = 0;
+
+ id_sign[id] = id_sign[id] + 1;
+
+ if (id_sign[id] == 1) {
+ x_old[id] = x;
+ y_old[id] = y;
+ }
+
+ x = (x_old[id] + x)/2;
+ y = (y_old[id] + y)/2;
+
+ if (x > x_old[id]) {
+ x_err = x - x_old[id];
+ } else {
+ x_err = x_old[id]-x;
+ }
+
+ if (y > y_old[id]) {
+ y_err = y - y_old[id];
+ } else {
+ y_err = y_old[id] - y;
+ }
+
+ if ((x_err > 3 && y_err > 1) || (x_err > 1 && y_err > 3)) {
+ x_new = x;
+ x_old[id] = x;
+ y_new = y;
+ y_old[id] = y;
+ } else {
+ if (x_err > 3) {
+ x_new = x;
+ x_old[id] = x;
+ } else
+ x_new = x_old[id];
+
+ if (y_err > 3) {
+ y_new = y;
+ y_old[id] = y;
+ } else
+ y_new = y_old[id];
+ }
+
+ if (id_sign[id] == 1) {
+ x_new = x_old[id];
+ y_new = y_old[id];
+ }
+}
+
+static void report_data(struct gsl_ts *ts, u16 x, u16 y, u8 pressure, u8 id)
+{
+ swap(x, y);
+
+ print_info("#####id=%d,x=%d,y=%d######\n", id, x, y);
+ x = 1024 - x;
+ y = 600 - y;
+
+ if (x > SCREEN_MAX_X || y > SCREEN_MAX_Y) {
+ #ifdef HAVE_TOUCH_KEY
+ report_key(ts, x, y);
+ #endif
+ return;
+ }
+
+#ifdef REPORT_DATA_ANDROID_4_0
+ input_mt_slot(ts->input, id);
+ input_report_abs(ts->input, ABS_MT_TRACKING_ID, id);
+ input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, pressure);
+ input_report_abs(ts->input, ABS_MT_POSITION_X, x);
+ input_report_abs(ts->input, ABS_MT_POSITION_Y, y);
+ input_report_abs(ts->input, ABS_MT_WIDTH_MAJOR, 1);
+#else
+ input_report_abs(ts->input, ABS_MT_TRACKING_ID, id);
+ input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, pressure);
+ input_report_abs(ts->input, ABS_MT_POSITION_X, x);
+ input_report_abs(ts->input, ABS_MT_POSITION_Y, y);
+ input_report_abs(ts->input, ABS_MT_WIDTH_MAJOR, 1);
+ input_mt_sync(ts->input);
+#endif
+}
+
+static void process_gslX680_data(struct gsl_ts *ts)
+{
+ u8 id, touches;
+ u16 x, y;
+ int i = 0;
+
+ touches = ts->touch_data[ts->dd->touch_index];
+ for (i = 1; i <= MAX_CONTACTS; i++) {
+ if (touches == 0)
+ id_sign[i] = 0;
+ id_state_flag[i] = 0;
+ }
+
+ for (i = 0; i < (touches > MAX_FINGERS ? MAX_FINGERS : touches); i++) {
+ x = join_bytes((ts->touch_data[ts->dd->x_index + 4*i + 1] & 0xf), ts->touch_data[ts->dd->x_index + 4*i]);
+ y = join_bytes(ts->touch_data[ts->dd->y_index + 4*i + 1], ts->touch_data[ts->dd->y_index + 4*i]);
+ id = ts->touch_data[ts->dd->id_index + 4*i] >> 4;
+
+ if (1 <= id && id <= MAX_CONTACTS) {
+ #ifdef FILTER_POINT
+ filter_point(x, y, id);
+ #else
+ record_point(x, y, id);
+ #endif
+ report_data(ts, x_new, y_new, 50, id);
+ id_state_flag[id] = 1;
+ }
+ }
+
+ for (i = 1; i <= MAX_CONTACTS; i++) {
+ if ((0 == touches) || ((0 != id_state_old_flag[i]) && (0 == id_state_flag[i]))) {
+ #ifdef REPORT_DATA_ANDROID_4_0
+ input_mt_slot(ts->input, i);
+ input_report_abs(ts->input, ABS_MT_TRACKING_ID, -1);
+ input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, false);
+ #endif
+ id_sign[i] = 0;
+ }
+ id_state_old_flag[i] = id_state_flag[i];
+ }
+#ifndef REPORT_DATA_ANDROID_4_0
+ if (0 == touches) {
+ input_mt_sync(ts->input);
+ #ifdef HAVE_TOUCH_KEY
+ if (key_state_flag) {
+ input_report_key(ts->input, key, 0);
+ input_sync(ts->input);
+ key_state_flag = 0;
+ }
+ #endif
+ }
+#endif
+ input_sync(ts->input);
+}
+
+
+static void gsl_ts_xy_worker(struct work_struct *work)
+{
+ int rc;
+ u8 read_buf[4] = {0};
+
+ struct gsl_ts *ts = container_of(work, struct gsl_ts, work);
+ print_info("---gsl_ts_xy_worker---\n");
+
+ /* read data from DATA_REG */
+ rc = gsl_ts_read(ts->client, 0x80, ts->touch_data, ts->dd->data_size);
+ print_info("---touches: %d ---\n", ts->touch_data[0]);
+
+ if (rc < 0) {
+ dev_err(&ts->client->dev, "read failed\n");
+ goto schedule;
+ }
+
+ if (ts->touch_data[ts->dd->touch_index] == 0xff) {
+ goto schedule;
+ }
+
+ rc = gsl_ts_read(ts->client, 0xbc, read_buf, sizeof(read_buf));
+ if (rc < 0) {
+ dev_err(&ts->client->dev, "read 0xbc failed\n");
+ goto schedule;
+ }
+ print_info("//////// reg %x : %x %x %x %x\n", 0xbc, read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
+
+ if (read_buf[3] == 0 && read_buf[2] == 0 && read_buf[1] == 0 && read_buf[0] == 0) {
+ process_gslX680_data(ts);
+ } else {
+ reset_chip(ts->client);
+ startup_chip(ts->client);
+ }
+schedule:
+ enable_irq(ts->irq);
+}
+
+static irqreturn_t gsl_ts_irq(int irq, void *dev_id)
+{
+ struct gsl_ts *ts = dev_id;
+
+ print_info("==========GSLX680 Interrupt============\n");
+
+ disable_irq_nosync(ts->irq);
+
+ if (!work_pending(&ts->work)) {
+ queue_work(ts->wq, &ts->work);
+ }
+
+ return IRQ_HANDLED;
+
+}
+
+#ifdef GSL_TIMER
+static void gsl_timer_handle(unsigned long data)
+{
+ struct gsl_ts *ts = (struct gsl_ts *)data;
+
+#ifdef GSL_DEBUG
+ printk("----------------gsl_timer_handle-----------------\n");
+#endif
+
+ disable_irq_nosync(ts->irq);
+ check_mem_data(ts->client);
+ ts->gsl_timer.expires = jiffies + 3 * HZ;
+ add_timer(&ts->gsl_timer);
+ enable_irq(ts->irq);
+}
+#endif
+
+static int gsl_ts_init_ts(struct i2c_client *client, struct gsl_ts *ts)
+{
+ struct input_dev *input_device;
+#ifdef CONFIG_MACH_RK_FAC
+ struct tp_platform_data *pdata = client->dev.platform_data;
+#endif
+ int rc = 0;
+
+ printk("[GSLX680] Enter %s\n", __func__);
+
+ ts->dd = &devices[ts->device_id];
+
+ if (ts->device_id == 0) {
+ ts->dd->data_size = MAX_FINGERS * ts->dd->touch_bytes + ts->dd->touch_meta_data;
+ ts->dd->touch_index = 0;
+ }
+
+ ts->touch_data = kzalloc(ts->dd->data_size, GFP_KERNEL);
+ if (!ts->touch_data) {
+ pr_err("%s: Unable to allocate memory\n", __func__);
+ return -ENOMEM;
+ }
+
+
+ input_device = input_allocate_device();
+ if (!input_device) {
+ rc = -ENOMEM;
+ goto error_alloc_dev;
+ }
+
+ ts->input = input_device;
+ input_device->name = GSLX680_I2C_NAME;
+ input_device->id.bustype = BUS_I2C;
+ input_device->dev.parent = &client->dev;
+ input_set_drvdata(input_device, ts);
+
+#ifdef REPORT_DATA_ANDROID_4_0
+ __set_bit(EV_ABS, input_device->evbit);
+ __set_bit(EV_KEY, input_device->evbit);
+ __set_bit(EV_REP, input_device->evbit);
+ __set_bit(INPUT_PROP_DIRECT, input_device->propbit);
+ input_mt_init_slots(input_device, (MAX_CONTACTS+1), 0);
+#else
+ input_set_abs_params(input_device, ABS_MT_TRACKING_ID, 0, (MAX_CONTACTS+1), 0, 0);
+ set_bit(EV_ABS, input_device->evbit);
+ set_bit(EV_KEY, input_device->evbit);
+#endif
+
+#ifdef HAVE_TOUCH_KEY
+ input_device->evbit[0] = BIT_MASK(EV_KEY);
+ for (i = 0; i < MAX_KEY_NUM; i++)
+ set_bit(key_array[i], input_device->keybit);
+#endif
+
+ set_bit(ABS_MT_POSITION_X, input_device->absbit);
+ set_bit(ABS_MT_POSITION_Y, input_device->absbit);
+ set_bit(ABS_MT_TOUCH_MAJOR, input_device->absbit);
+ set_bit(ABS_MT_WIDTH_MAJOR, input_device->absbit);
+#ifdef CONFIG_MACH_RK_FAC
+ input_set_abs_params(input_device, ABS_MT_POSITION_X, 0, pdata->x_max, 0, 0);
+ input_set_abs_params(input_device, ABS_MT_POSITION_Y, 0, pdata->y_max, 0, 0);
+#else
+ input_set_abs_params(input_device, ABS_MT_POSITION_X, 0, SCREEN_MAX_X, 0, 0);
+ input_set_abs_params(input_device, ABS_MT_POSITION_Y, 0, SCREEN_MAX_Y, 0, 0);
+#endif
+ input_set_abs_params(input_device, ABS_MT_TOUCH_MAJOR, 0, PRESS_MAX, 0, 0);
+ input_set_abs_params(input_device, ABS_MT_WIDTH_MAJOR, 0, 200, 0, 0);
+
+ client->irq = ts->irq;
+
+ ts->wq = create_singlethread_workqueue("kworkqueue_ts");
+ if (!ts->wq) {
+ dev_err(&client->dev, "Could not create workqueue\n");
+ goto error_wq_create;
+ }
+ flush_workqueue(ts->wq);
+
+ INIT_WORK(&ts->work, gsl_ts_xy_worker);
+
+ rc = input_register_device(input_device);
+ if (rc)
+ goto error_unreg_device;
+
+ return 0;
+
+error_unreg_device:
+ destroy_workqueue(ts->wq);
+error_wq_create:
+ input_free_device(input_device);
+error_alloc_dev:
+ kfree(ts->touch_data);
+ return rc;
+}
+
+
+#if 1
+static int gsl_ts_suspend(void)
+{
+ struct gsl_ts *ts = g_gsl_ts;
+ printk("I'am in gsl_ts_suspend() start\n");
+ flush_workqueue(ts->wq);
+#ifdef GSL_TIMER
+ printk("gsl_ts_suspend () : delete gsl_timer\n");
+ del_timer(&ts->gsl_timer);
+#endif
+ disable_irq_nosync(ts->irq);
+ gslX680_shutdown_low();
+ return 0;
+}
+
+static int gsl_ts_resume(void)
+{
+ struct gsl_ts *ts = g_gsl_ts;
+ int i = 0;
+
+ printk("I'am in gsl_ts_resume() start\n");
+
+ gslX680_shutdown_high();
+ msleep(20);
+ reset_chip(ts->client);
+ startup_chip(ts->client);
+ check_mem_data(ts->client);
+
+ msleep(100);
+ reset_chip(ts->client);
+ startup_chip(ts->client);
+ msleep(100);
+ reset_chip(ts->client);
+ startup_chip(ts->client);
+#ifdef GSL_TIMER
+ printk("gsl_ts_resume () : add gsl_timer\n");
+ init_timer(&ts->gsl_timer);
+ ts->gsl_timer.expires = jiffies + 3 * HZ;
+ ts->gsl_timer.function = &gsl_timer_handle;
+ ts->gsl_timer.data = (unsigned long)ts;
+ add_timer(&ts->gsl_timer);
+#endif
+
+ for (i = 1; i <= MAX_CONTACTS; i++) {
+ if (0 != id_state_old_flag[i]) {
+ #ifdef REPORT_DATA_ANDROID_4_0
+ input_mt_slot(ts->input, i);
+ input_report_abs(ts->input, ABS_MT_TRACKING_ID, -1);
+ input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, false);
+ input_sync(ts->input);
+ #endif
+ id_sign[i] = 0;
+ }
+ id_state_old_flag[i] = id_state_flag[i] = 0;
+ }
+ enable_irq(ts->irq);
+ return 0;
+}
+
+static int gsl_ts_fb_event_notify(struct notifier_block *self,
+ unsigned long action, void *data)
+{
+ struct fb_event *event = data;
+ int blank_mode = *((int *)event->data);
+
+ if (action == FB_EARLY_EVENT_BLANK) {
+ switch (blank_mode) {
+ case FB_BLANK_UNBLANK:
+ break;
+ default:
+ gsl_ts_suspend();
+ break;
+ }
+ } else if (action == FB_EVENT_BLANK) {
+ switch (blank_mode) {
+ case FB_BLANK_UNBLANK:
+ gsl_ts_resume();
+ break;
+ default:
+ break;
+ }
+ }
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block gsl_ts_fb_notifier = {
+ .notifier_call = gsl_ts_fb_event_notify,
+};
+
+#endif
+
+int gslx680_config_hw(struct gsl_ts *ts)
+{
+ struct device_node *np;
+ enum of_gpio_flags rst_flags;
+ unsigned long irq_flags;
+ unsigned int irq_gpio;
+ struct device *dev;
+
+ dev = &ts->client->dev;
+ np = dev->of_node;
+
+ irq_gpio = of_get_named_gpio_flags(np, "touch-gpio", 0, (enum of_gpio_flags *)&irq_flags);
+ ts->irq = gpio_to_irq(irq_gpio);
+ ts->reset_gpio = of_get_named_gpio_flags(np, "reset-gpio", 0, &rst_flags);
+
+ if (gpio_request(ts->reset_gpio, NULL) != 0) {
+ gpio_free(ts->reset_gpio);
+ printk("gslx680_init_platform_hw gpio_request error\n");
+ return -EIO;
+ }
+
+ if (gpio_request(irq_gpio, NULL) != 0) {
+ gpio_free(irq_gpio);
+ printk("gslx680_init_platform_hw gpio_request error\n");
+ return -EIO;
+ }
+
+ gpio_direction_output(ts->reset_gpio, GPIO_HIGH);
+ mdelay(10);
+ gpio_set_value(ts->reset_gpio, GPIO_LOW);
+ mdelay(10);
+ gpio_set_value(ts->reset_gpio, GPIO_HIGH);
+ msleep(300);
+ return 0;
+
+}
+
+
+static int gsl_ts_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct gsl_ts *ts;
+ int rc;
+ u8 read_buf = 0;
+ int ret;
+
+ printk("GSLX680 Enter %s\n", __func__);
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ dev_err(&client->dev, "I2C functionality not supported\n");
+ return -ENODEV;
+ }
+
+ ts = kzalloc(sizeof(*ts), GFP_KERNEL);
+ if (!ts)
+ return -ENOMEM;
+ printk("==kzalloc success=\n");
+ g_gsl_ts = ts;
+
+ ts->client = client;
+ ts->device_id = id->driver_data;
+
+ gslx680_config_hw(ts);
+ ts_global_reset_pin = ts->reset_gpio;
+ i2c_set_clientdata(client, ts);
+
+ rc = gsl_ts_init_ts(client, ts);
+ if (rc < 0) {
+ dev_err(&client->dev, "GSLX680 init failed\n");
+ goto error_mutex_destroy;
+ }
+
+ init_chip(ts->client);
+ check_mem_data(ts->client);
+
+ rc = request_irq(client->irq, gsl_ts_irq, IRQF_TRIGGER_RISING, client->name, ts);
+ if (rc < 0) {
+ printk("gsl_probe: request irq failed\n");
+ goto error_req_irq_fail;
+ }
+
+ disable_irq(client->irq);
+
+ ret = gsl_ts_read(client, 0xf0, &read_buf, sizeof(read_buf));
+ if (ret < 0) {
+ pr_info("gslx680 I2C transfer error!\n");
+ goto error_req_irq_fail;
+ }
+
+#ifdef GSL_TIMER
+ printk("gsl_ts_probe () : add gsl_timer\n");
+
+ init_timer(&ts->gsl_timer);
+ ts->gsl_timer.expires = jiffies + 3 * HZ;
+ ts->gsl_timer.function = &gsl_timer_handle;
+ ts->gsl_timer.data = (unsigned long)ts;
+ add_timer(&ts->gsl_timer);
+#endif
+ fb_register_client(&gsl_ts_fb_notifier);
+
+ printk("[GSLX680] End %s\n", __func__);
+
+ return 0;
+
+error_req_irq_fail:
+ free_irq(ts->irq, ts);
+
+error_mutex_destroy:
+ input_free_device(ts->input);
+ kfree(ts);
+ return rc;
+}
+
+static int gsl_ts_remove(struct i2c_client *client)
+{
+ struct gsl_ts *ts = i2c_get_clientdata(client);
+ printk("==gsl_ts_remove=\n");
+ device_init_wakeup(&client->dev, 0);
+ cancel_work_sync(&ts->work);
+ free_irq(ts->irq, ts);
+ destroy_workqueue(ts->wq);
+ input_unregister_device(ts->input);
+
+ kfree(ts->touch_data);
+ kfree(ts);
+
+ return 0;
+}
+
+static const struct i2c_device_id gsl_ts_id[] = {
+ {GSLX680_I2C_NAME, 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, gsl_ts_id);
+
+static struct of_device_id gslX680_dt_ids[] = {
+ { .compatible = "gslX680" },
+};
+
+static struct i2c_driver gsl_ts_driver = {
+ .driver = {
+ .name = GSLX680_I2C_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(gslX680_dt_ids),
+ },
+ .probe = gsl_ts_probe,
+ .remove = gsl_ts_remove,
+ .id_table = gsl_ts_id,
+};
+
+static int __init gsl_ts_init(void)
+{
+ int ret;
+ printk("==gsl_ts_init==\n");
+ ret = i2c_add_driver(&gsl_ts_driver);
+ printk("ret=%d\n", ret);
+ return ret;
+}
+static void __exit gsl_ts_exit(void)
+{
+ printk("==gsl_ts_exit==\n");
+ i2c_del_driver(&gsl_ts_driver);
+ return;
+}
+
+module_init(gsl_ts_init);
+module_exit(gsl_ts_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("GSLX680 touchscreen controller driver");
+MODULE_AUTHOR("Guan Yuwei, guanyuwei@basewin.com");
+MODULE_ALIAS("platform:gsl_ts");
projects / firefly-linux-kernel-4.4.55.git / commitdiff