diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/touchscreen/synaptics_i2c_rmi.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/input/touchscreen/synaptics_i2c_rmi.c | 675 |
1 files changed, 675 insertions, 0 deletions
diff --git a/ANDROID_3.4.5/drivers/input/touchscreen/synaptics_i2c_rmi.c b/ANDROID_3.4.5/drivers/input/touchscreen/synaptics_i2c_rmi.c new file mode 100644 index 00000000..5729602c --- /dev/null +++ b/ANDROID_3.4.5/drivers/input/touchscreen/synaptics_i2c_rmi.c @@ -0,0 +1,675 @@ +/* drivers/input/keyboard/synaptics_i2c_rmi.c + * + * Copyright (C) 2007 Google, Inc. + * + * 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. + * + */ + +#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/platform_device.h> +#include <linux/slab.h> +#include <linux/synaptics_i2c_rmi.h> + +static struct workqueue_struct *synaptics_wq; + +struct synaptics_ts_data { + uint16_t addr; + struct i2c_client *client; + struct input_dev *input_dev; + int use_irq; + bool has_relative_report; + struct hrtimer timer; + struct work_struct work; + uint16_t max[2]; + int snap_state[2][2]; + int snap_down_on[2]; + int snap_down_off[2]; + int snap_up_on[2]; + int snap_up_off[2]; + int snap_down[2]; + int snap_up[2]; + uint32_t flags; + int reported_finger_count; + int8_t sensitivity_adjust; + int (*power)(int on); + struct early_suspend early_suspend; +}; + +#ifdef CONFIG_HAS_EARLYSUSPEND +static void synaptics_ts_early_suspend(struct early_suspend *h); +static void synaptics_ts_late_resume(struct early_suspend *h); +#endif + +static int synaptics_init_panel(struct synaptics_ts_data *ts) +{ + int ret; + + ret = i2c_smbus_write_byte_data(ts->client, 0xff, 0x10); /* page select = 0x10 */ + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_write_byte_data failed for page select\n"); + goto err_page_select_failed; + } + ret = i2c_smbus_write_byte_data(ts->client, 0x41, 0x04); /* Set "No Clip Z" */ + if (ret < 0) + printk(KERN_ERR "i2c_smbus_write_byte_data failed for No Clip Z\n"); + + ret = i2c_smbus_write_byte_data(ts->client, 0x44, + ts->sensitivity_adjust); + if (ret < 0) + pr_err("synaptics_ts: failed to set Sensitivity Adjust\n"); + +err_page_select_failed: + ret = i2c_smbus_write_byte_data(ts->client, 0xff, 0x04); /* page select = 0x04 */ + if (ret < 0) + printk(KERN_ERR "i2c_smbus_write_byte_data failed for page select\n"); + ret = i2c_smbus_write_byte_data(ts->client, 0xf0, 0x81); /* normal operation, 80 reports per second */ + if (ret < 0) + printk(KERN_ERR "synaptics_ts_resume: i2c_smbus_write_byte_data failed\n"); + return ret; +} + +static void synaptics_ts_work_func(struct work_struct *work) +{ + int i; + int ret; + int bad_data = 0; + struct i2c_msg msg[2]; + uint8_t start_reg; + uint8_t buf[15]; + struct synaptics_ts_data *ts = container_of(work, struct synaptics_ts_data, work); + int buf_len = ts->has_relative_report ? 15 : 13; + + msg[0].addr = ts->client->addr; + msg[0].flags = 0; + msg[0].len = 1; + msg[0].buf = &start_reg; + start_reg = 0x00; + msg[1].addr = ts->client->addr; + msg[1].flags = I2C_M_RD; + msg[1].len = buf_len; + msg[1].buf = buf; + + /* printk("synaptics_ts_work_func\n"); */ + for (i = 0; i < ((ts->use_irq && !bad_data) ? 1 : 10); i++) { + ret = i2c_transfer(ts->client->adapter, msg, 2); + if (ret < 0) { + printk(KERN_ERR "synaptics_ts_work_func: i2c_transfer failed\n"); + bad_data = 1; + } else { + /* printk("synaptics_ts_work_func: %x %x %x %x %x %x" */ + /* " %x %x %x %x %x %x %x %x %x, ret %d\n", */ + /* buf[0], buf[1], buf[2], buf[3], */ + /* buf[4], buf[5], buf[6], buf[7], */ + /* buf[8], buf[9], buf[10], buf[11], */ + /* buf[12], buf[13], buf[14], ret); */ + if ((buf[buf_len - 1] & 0xc0) != 0x40) { + printk(KERN_WARNING "synaptics_ts_work_func:" + " bad read %x %x %x %x %x %x %x %x %x" + " %x %x %x %x %x %x, ret %d\n", + buf[0], buf[1], buf[2], buf[3], + buf[4], buf[5], buf[6], buf[7], + buf[8], buf[9], buf[10], buf[11], + buf[12], buf[13], buf[14], ret); + if (bad_data) + synaptics_init_panel(ts); + bad_data = 1; + continue; + } + bad_data = 0; + if ((buf[buf_len - 1] & 1) == 0) { + /* printk("read %d coordinates\n", i); */ + break; + } else { + int pos[2][2]; + int f, a; + int base; + /* int x = buf[3] | (uint16_t)(buf[2] & 0x1f) << 8; */ + /* int y = buf[5] | (uint16_t)(buf[4] & 0x1f) << 8; */ + int z = buf[1]; + int w = buf[0] >> 4; + int finger = buf[0] & 7; + + /* int x2 = buf[3+6] | (uint16_t)(buf[2+6] & 0x1f) << 8; */ + /* int y2 = buf[5+6] | (uint16_t)(buf[4+6] & 0x1f) << 8; */ + /* int z2 = buf[1+6]; */ + /* int w2 = buf[0+6] >> 4; */ + /* int finger2 = buf[0+6] & 7; */ + + /* int dx = (int8_t)buf[12]; */ + /* int dy = (int8_t)buf[13]; */ + int finger2_pressed; + + /* printk("x %4d, y %4d, z %3d, w %2d, F %d, 2nd: x %4d, y %4d, z %3d, w %2d, F %d, dx %4d, dy %4d\n", */ + /* x, y, z, w, finger, */ + /* x2, y2, z2, w2, finger2, */ + /* dx, dy); */ + + base = 2; + for (f = 0; f < 2; f++) { + uint32_t flip_flag = SYNAPTICS_FLIP_X; + for (a = 0; a < 2; a++) { + int p = buf[base + 1]; + p |= (uint16_t)(buf[base] & 0x1f) << 8; + if (ts->flags & flip_flag) + p = ts->max[a] - p; + if (ts->flags & SYNAPTICS_SNAP_TO_INACTIVE_EDGE) { + if (ts->snap_state[f][a]) { + if (p <= ts->snap_down_off[a]) + p = ts->snap_down[a]; + else if (p >= ts->snap_up_off[a]) + p = ts->snap_up[a]; + else + ts->snap_state[f][a] = 0; + } else { + if (p <= ts->snap_down_on[a]) { + p = ts->snap_down[a]; + ts->snap_state[f][a] = 1; + } else if (p >= ts->snap_up_on[a]) { + p = ts->snap_up[a]; + ts->snap_state[f][a] = 1; + } + } + } + pos[f][a] = p; + base += 2; + flip_flag <<= 1; + } + base += 2; + if (ts->flags & SYNAPTICS_SWAP_XY) + swap(pos[f][0], pos[f][1]); + } + if (z) { + input_report_abs(ts->input_dev, ABS_X, pos[0][0]); + input_report_abs(ts->input_dev, ABS_Y, pos[0][1]); + } + input_report_abs(ts->input_dev, ABS_PRESSURE, z); + input_report_abs(ts->input_dev, ABS_TOOL_WIDTH, w); + input_report_key(ts->input_dev, BTN_TOUCH, finger); + finger2_pressed = finger > 1 && finger != 7; + input_report_key(ts->input_dev, BTN_2, finger2_pressed); + if (finger2_pressed) { + input_report_abs(ts->input_dev, ABS_HAT0X, pos[1][0]); + input_report_abs(ts->input_dev, ABS_HAT0Y, pos[1][1]); + } + + if (!finger) + z = 0; + input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, z); + input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, w); + input_report_abs(ts->input_dev, ABS_MT_POSITION_X, pos[0][0]); + input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, pos[0][1]); + input_mt_sync(ts->input_dev); + if (finger2_pressed) { + input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, z); + input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, w); + input_report_abs(ts->input_dev, ABS_MT_POSITION_X, pos[1][0]); + input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, pos[1][1]); + input_mt_sync(ts->input_dev); + } else if (ts->reported_finger_count > 1) { + input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0); + input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0); + input_mt_sync(ts->input_dev); + } + ts->reported_finger_count = finger; + input_sync(ts->input_dev); + } + } + } + if (ts->use_irq) + enable_irq(ts->client->irq); +} + +static enum hrtimer_restart synaptics_ts_timer_func(struct hrtimer *timer) +{ + struct synaptics_ts_data *ts = container_of(timer, struct synaptics_ts_data, timer); + /* printk("synaptics_ts_timer_func\n"); */ + + queue_work(synaptics_wq, &ts->work); + + hrtimer_start(&ts->timer, ktime_set(0, 12500000), HRTIMER_MODE_REL); + return HRTIMER_NORESTART; +} + +static irqreturn_t synaptics_ts_irq_handler(int irq, void *dev_id) +{ + struct synaptics_ts_data *ts = dev_id; + + /* printk("synaptics_ts_irq_handler\n"); */ + disable_irq_nosync(ts->client->irq); + queue_work(synaptics_wq, &ts->work); + return IRQ_HANDLED; +} + +static int synaptics_ts_probe( + struct i2c_client *client, const struct i2c_device_id *id) +{ + struct synaptics_ts_data *ts; + uint8_t buf0[4]; + uint8_t buf1[8]; + struct i2c_msg msg[2]; + int ret = 0; + uint16_t max_x, max_y; + int fuzz_x, fuzz_y, fuzz_p, fuzz_w; + struct synaptics_i2c_rmi_platform_data *pdata; + unsigned long irqflags; + int inactive_area_left; + int inactive_area_right; + int inactive_area_top; + int inactive_area_bottom; + int snap_left_on; + int snap_left_off; + int snap_right_on; + int snap_right_off; + int snap_top_on; + int snap_top_off; + int snap_bottom_on; + int snap_bottom_off; + uint32_t panel_version; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + printk(KERN_ERR "synaptics_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, synaptics_ts_work_func); + ts->client = client; + i2c_set_clientdata(client, ts); + pdata = client->dev.platform_data; + if (pdata) + ts->power = pdata->power; + if (ts->power) { + ret = ts->power(1); + if (ret < 0) { + printk(KERN_ERR "synaptics_ts_probe power on failed\n"); + goto err_power_failed; + } + } + + ret = i2c_smbus_write_byte_data(ts->client, 0xf4, 0x01); /* device command = reset */ + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_write_byte_data failed\n"); + /* fail? */ + } + { + int retry = 10; + while (retry-- > 0) { + ret = i2c_smbus_read_byte_data(ts->client, 0xe4); + if (ret >= 0) + break; + msleep(100); + } + } + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_read_byte_data failed\n"); + goto err_detect_failed; + } + printk(KERN_INFO "synaptics_ts_probe: Product Major Version %x\n", ret); + panel_version = ret << 8; + ret = i2c_smbus_read_byte_data(ts->client, 0xe5); + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_read_byte_data failed\n"); + goto err_detect_failed; + } + printk(KERN_INFO "synaptics_ts_probe: Product Minor Version %x\n", ret); + panel_version |= ret; + + ret = i2c_smbus_read_byte_data(ts->client, 0xe3); + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_read_byte_data failed\n"); + goto err_detect_failed; + } + printk(KERN_INFO "synaptics_ts_probe: product property %x\n", ret); + + if (pdata) { + while (pdata->version > panel_version) + pdata++; + ts->flags = pdata->flags; + ts->sensitivity_adjust = pdata->sensitivity_adjust; + irqflags = pdata->irqflags; + inactive_area_left = pdata->inactive_left; + inactive_area_right = pdata->inactive_right; + inactive_area_top = pdata->inactive_top; + inactive_area_bottom = pdata->inactive_bottom; + snap_left_on = pdata->snap_left_on; + snap_left_off = pdata->snap_left_off; + snap_right_on = pdata->snap_right_on; + snap_right_off = pdata->snap_right_off; + snap_top_on = pdata->snap_top_on; + snap_top_off = pdata->snap_top_off; + snap_bottom_on = pdata->snap_bottom_on; + snap_bottom_off = pdata->snap_bottom_off; + fuzz_x = pdata->fuzz_x; + fuzz_y = pdata->fuzz_y; + fuzz_p = pdata->fuzz_p; + fuzz_w = pdata->fuzz_w; + } else { + irqflags = 0; + inactive_area_left = 0; + inactive_area_right = 0; + inactive_area_top = 0; + inactive_area_bottom = 0; + snap_left_on = 0; + snap_left_off = 0; + snap_right_on = 0; + snap_right_off = 0; + snap_top_on = 0; + snap_top_off = 0; + snap_bottom_on = 0; + snap_bottom_off = 0; + fuzz_x = 0; + fuzz_y = 0; + fuzz_p = 0; + fuzz_w = 0; + } + + ret = i2c_smbus_read_byte_data(ts->client, 0xf0); + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_read_byte_data failed\n"); + goto err_detect_failed; + } + printk(KERN_INFO "synaptics_ts_probe: device control %x\n", ret); + + ret = i2c_smbus_read_byte_data(ts->client, 0xf1); + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_read_byte_data failed\n"); + goto err_detect_failed; + } + printk(KERN_INFO "synaptics_ts_probe: interrupt enable %x\n", ret); + + ret = i2c_smbus_write_byte_data(ts->client, 0xf1, 0); /* disable interrupt */ + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_write_byte_data failed\n"); + goto err_detect_failed; + } + + msg[0].addr = ts->client->addr; + msg[0].flags = 0; + msg[0].len = 1; + msg[0].buf = buf0; + buf0[0] = 0xe0; + msg[1].addr = ts->client->addr; + msg[1].flags = I2C_M_RD; + msg[1].len = 8; + msg[1].buf = buf1; + ret = i2c_transfer(ts->client->adapter, msg, 2); + if (ret < 0) { + printk(KERN_ERR "i2c_transfer failed\n"); + goto err_detect_failed; + } + printk(KERN_INFO "synaptics_ts_probe: 0xe0: %x %x %x %x %x %x %x %x\n", + buf1[0], buf1[1], buf1[2], buf1[3], + buf1[4], buf1[5], buf1[6], buf1[7]); + + ret = i2c_smbus_write_byte_data(ts->client, 0xff, 0x10); /* page select = 0x10 */ + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_write_byte_data failed for page select\n"); + goto err_detect_failed; + } + ret = i2c_smbus_read_word_data(ts->client, 0x02); + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_read_word_data failed\n"); + goto err_detect_failed; + } + ts->has_relative_report = !(ret & 0x100); + printk(KERN_INFO "synaptics_ts_probe: Sensor properties %x\n", ret); + ret = i2c_smbus_read_word_data(ts->client, 0x04); + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_read_word_data failed\n"); + goto err_detect_failed; + } + ts->max[0] = max_x = (ret >> 8 & 0xff) | ((ret & 0x1f) << 8); + ret = i2c_smbus_read_word_data(ts->client, 0x06); + if (ret < 0) { + printk(KERN_ERR "i2c_smbus_read_word_data failed\n"); + goto err_detect_failed; + } + ts->max[1] = max_y = (ret >> 8 & 0xff) | ((ret & 0x1f) << 8); + if (ts->flags & SYNAPTICS_SWAP_XY) + swap(max_x, max_y); + + ret = synaptics_init_panel(ts); /* will also switch back to page 0x04 */ + if (ret < 0) { + printk(KERN_ERR "synaptics_init_panel failed\n"); + goto err_detect_failed; + } + + ts->input_dev = input_allocate_device(); + if (ts->input_dev == NULL) { + ret = -ENOMEM; + printk(KERN_ERR "synaptics_ts_probe: Failed to allocate input device\n"); + goto err_input_dev_alloc_failed; + } + ts->input_dev->name = "synaptics-rmi-touchscreen"; + set_bit(EV_SYN, ts->input_dev->evbit); + set_bit(EV_KEY, ts->input_dev->evbit); + set_bit(BTN_TOUCH, ts->input_dev->keybit); + set_bit(BTN_2, ts->input_dev->keybit); + set_bit(EV_ABS, ts->input_dev->evbit); + inactive_area_left = inactive_area_left * max_x / 0x10000; + inactive_area_right = inactive_area_right * max_x / 0x10000; + inactive_area_top = inactive_area_top * max_y / 0x10000; + inactive_area_bottom = inactive_area_bottom * max_y / 0x10000; + snap_left_on = snap_left_on * max_x / 0x10000; + snap_left_off = snap_left_off * max_x / 0x10000; + snap_right_on = snap_right_on * max_x / 0x10000; + snap_right_off = snap_right_off * max_x / 0x10000; + snap_top_on = snap_top_on * max_y / 0x10000; + snap_top_off = snap_top_off * max_y / 0x10000; + snap_bottom_on = snap_bottom_on * max_y / 0x10000; + snap_bottom_off = snap_bottom_off * max_y / 0x10000; + fuzz_x = fuzz_x * max_x / 0x10000; + fuzz_y = fuzz_y * max_y / 0x10000; + ts->snap_down[!!(ts->flags & SYNAPTICS_SWAP_XY)] = -inactive_area_left; + ts->snap_up[!!(ts->flags & SYNAPTICS_SWAP_XY)] = max_x + inactive_area_right; + ts->snap_down[!(ts->flags & SYNAPTICS_SWAP_XY)] = -inactive_area_top; + ts->snap_up[!(ts->flags & SYNAPTICS_SWAP_XY)] = max_y + inactive_area_bottom; + ts->snap_down_on[!!(ts->flags & SYNAPTICS_SWAP_XY)] = snap_left_on; + ts->snap_down_off[!!(ts->flags & SYNAPTICS_SWAP_XY)] = snap_left_off; + ts->snap_up_on[!!(ts->flags & SYNAPTICS_SWAP_XY)] = max_x - snap_right_on; + ts->snap_up_off[!!(ts->flags & SYNAPTICS_SWAP_XY)] = max_x - snap_right_off; + ts->snap_down_on[!(ts->flags & SYNAPTICS_SWAP_XY)] = snap_top_on; + ts->snap_down_off[!(ts->flags & SYNAPTICS_SWAP_XY)] = snap_top_off; + ts->snap_up_on[!(ts->flags & SYNAPTICS_SWAP_XY)] = max_y - snap_bottom_on; + ts->snap_up_off[!(ts->flags & SYNAPTICS_SWAP_XY)] = max_y - snap_bottom_off; + printk(KERN_INFO "synaptics_ts_probe: max_x %d, max_y %d\n", max_x, max_y); + printk(KERN_INFO "synaptics_ts_probe: inactive_x %d %d, inactive_y %d %d\n", + inactive_area_left, inactive_area_right, + inactive_area_top, inactive_area_bottom); + printk(KERN_INFO "synaptics_ts_probe: snap_x %d-%d %d-%d, snap_y %d-%d %d-%d\n", + snap_left_on, snap_left_off, snap_right_on, snap_right_off, + snap_top_on, snap_top_off, snap_bottom_on, snap_bottom_off); + input_set_abs_params(ts->input_dev, ABS_X, -inactive_area_left, max_x + inactive_area_right, fuzz_x, 0); + input_set_abs_params(ts->input_dev, ABS_Y, -inactive_area_top, max_y + inactive_area_bottom, fuzz_y, 0); + input_set_abs_params(ts->input_dev, ABS_PRESSURE, 0, 255, fuzz_p, 0); + input_set_abs_params(ts->input_dev, ABS_TOOL_WIDTH, 0, 15, fuzz_w, 0); + input_set_abs_params(ts->input_dev, ABS_HAT0X, -inactive_area_left, max_x + inactive_area_right, fuzz_x, 0); + input_set_abs_params(ts->input_dev, ABS_HAT0Y, -inactive_area_top, max_y + inactive_area_bottom, fuzz_y, 0); + input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, -inactive_area_left, max_x + inactive_area_right, fuzz_x, 0); + input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, -inactive_area_top, max_y + inactive_area_bottom, fuzz_y, 0); + input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, fuzz_p, 0); + input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 15, fuzz_w, 0); + /* ts->input_dev->name = ts->keypad_info->name; */ + ret = input_register_device(ts->input_dev); + if (ret) { + printk(KERN_ERR "synaptics_ts_probe: Unable to register %s input device\n", ts->input_dev->name); + goto err_input_register_device_failed; + } + if (client->irq) { + ret = request_irq(client->irq, synaptics_ts_irq_handler, irqflags, client->name, ts); + if (ret == 0) { + ret = i2c_smbus_write_byte_data(ts->client, 0xf1, 0x01); /* enable abs int */ + if (ret) + free_irq(client->irq, ts); + } + if (ret == 0) + 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 = synaptics_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 = synaptics_ts_early_suspend; + ts->early_suspend.resume = synaptics_ts_late_resume; + register_early_suspend(&ts->early_suspend); +#endif + + printk(KERN_INFO "synaptics_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_input_dev_alloc_failed: +err_detect_failed: +err_power_failed: + kfree(ts); +err_alloc_data_failed: +err_check_functionality_failed: + return ret; +} + +static int synaptics_ts_remove(struct i2c_client *client) +{ + struct synaptics_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 synaptics_ts_suspend(struct i2c_client *client, pm_message_t mesg) +{ + int ret; + struct synaptics_ts_data *ts = i2c_get_clientdata(client); + + 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); + ret = i2c_smbus_write_byte_data(ts->client, 0xf1, 0); /* disable interrupt */ + if (ret < 0) + printk(KERN_ERR "synaptics_ts_suspend: i2c_smbus_write_byte_data failed\n"); + + ret = i2c_smbus_write_byte_data(client, 0xf0, 0x86); /* deep sleep */ + if (ret < 0) + printk(KERN_ERR "synaptics_ts_suspend: i2c_smbus_write_byte_data failed\n"); + if (ts->power) { + ret = ts->power(0); + if (ret < 0) + printk(KERN_ERR "synaptics_ts_resume power off failed\n"); + } + return 0; +} + +static int synaptics_ts_resume(struct i2c_client *client) +{ + int ret; + struct synaptics_ts_data *ts = i2c_get_clientdata(client); + + if (ts->power) { + ret = ts->power(1); + if (ret < 0) + printk(KERN_ERR "synaptics_ts_resume power on failed\n"); + } + + synaptics_init_panel(ts); + + if (ts->use_irq) + enable_irq(client->irq); + + if (!ts->use_irq) + hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL); + else + i2c_smbus_write_byte_data(ts->client, 0xf1, 0x01); /* enable abs int */ + + return 0; +} + +#ifdef CONFIG_HAS_EARLYSUSPEND +static void synaptics_ts_early_suspend(struct early_suspend *h) +{ + struct synaptics_ts_data *ts; + ts = container_of(h, struct synaptics_ts_data, early_suspend); + synaptics_ts_suspend(ts->client, PMSG_SUSPEND); +} + +static void synaptics_ts_late_resume(struct early_suspend *h) +{ + struct synaptics_ts_data *ts; + ts = container_of(h, struct synaptics_ts_data, early_suspend); + synaptics_ts_resume(ts->client); +} +#endif + +static const struct i2c_device_id synaptics_ts_id[] = { + { SYNAPTICS_I2C_RMI_NAME, 0 }, + { } +}; + +static struct i2c_driver synaptics_ts_driver = { + .probe = synaptics_ts_probe, + .remove = synaptics_ts_remove, +#ifndef CONFIG_HAS_EARLYSUSPEND + .suspend = synaptics_ts_suspend, + .resume = synaptics_ts_resume, +#endif + .id_table = synaptics_ts_id, + .driver = { + .name = SYNAPTICS_I2C_RMI_NAME, + }, +}; + +static int __devinit synaptics_ts_init(void) +{ + synaptics_wq = create_singlethread_workqueue("synaptics_wq"); + if (!synaptics_wq) + return -ENOMEM; + return i2c_add_driver(&synaptics_ts_driver); +} + +static void __exit synaptics_ts_exit(void) +{ + i2c_del_driver(&synaptics_ts_driver); + if (synaptics_wq) + destroy_workqueue(synaptics_wq); +} + +module_init(synaptics_ts_init); +module_exit(synaptics_ts_exit); + +MODULE_DESCRIPTION("Synaptics Touchscreen Driver"); +MODULE_LICENSE("GPL"); |