Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754012AbaLHDnZ (ORCPT ); Sun, 7 Dec 2014 22:43:25 -0500 Received: from mail-pd0-f179.google.com ([209.85.192.179]:63218 "EHLO mail-pd0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753998AbaLHDnV (ORCPT ); Sun, 7 Dec 2014 22:43:21 -0500 From: "jeffrey.lin" X-Google-Original-From: "jeffrey.lin" To: dmitry.torokhov@gmail.com, rydberg@euromail.se, shc_work@mail.ru, bleung@chromium.org, lee.jones@linaro.org, charliemooney@chromium.org Cc: jeffrey.lin@rad-ic.com, roger.yang@rad-ic.com, KP.li@rad-ic.com, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org Subject: [PATCH] driver: input :touchscreen : add Raydium I2C touch driver Date: Mon, 8 Dec 2014 11:42:59 +0800 Message-Id: <1418010179-22814-1-git-send-email-jeffrey.lin@rad-ic.com> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "jeffrey.lin" This patch is porting Raydium I2C touch driver. Developer can enable raydium touch driver by modifying define "CONFIG_TOUCHSCREEN_RM_TS". Signed-off-by: jeffrey.lin@rad-ic.com --- drivers/input/touchscreen/Kconfig | 12 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/rm31100_ts.c | 846 +++++++++++++++++++++++++++++++++ 3 files changed, 859 insertions(+) create mode 100644 drivers/input/touchscreen/rm31100_ts.c diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 3ce9181..d0324d2 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -955,4 +955,16 @@ config TOUCHSCREEN_ZFORCE To compile this driver as a module, choose M here: the module will be called zforce_ts. +config TOUCHSCREEN_RM_TS + tristate "Raydium I2C Touchscreen" + depends on I2C + help + Say Y here if you have Raydium series I2C touchscreen, + such as RM31100 , connected to your system. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called rm31100_ts. + endif diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 687d5a7..3220f66 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -78,3 +78,4 @@ obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE) += zylonite-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_W90X900) += w90p910_ts.o obj-$(CONFIG_TOUCHSCREEN_TPS6507X) += tps6507x-ts.o obj-$(CONFIG_TOUCHSCREEN_ZFORCE) += zforce_ts.o +obj-$(CONFIG_TOUCHSCREEN_RM_TS) += rm31100_ts.o diff --git a/drivers/input/touchscreen/rm31100_ts.c b/drivers/input/touchscreen/rm31100_ts.c new file mode 100644 index 0000000..997dc0c --- /dev/null +++ b/drivers/input/touchscreen/rm31100_ts.c @@ -0,0 +1,846 @@ +/* + * Raydium RM31100_ts touchscreen driver. + * + * Copyright (C) 2012-2014, Raydium Semiconductor Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2, and only version 2, as published by the + * Free Software Foundation. + * + * 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. + * + * Raydium reserves the right to make changes without further notice + * to the materials described herein. Raydium does not assume any + * liability arising out of the application described herein. + * + * Contact Raydium Semiconductor Corporation at www.rad-ic.com + * + * History: + * (C) 2012 Raydium - Update for GPL distribution + * (C) 2009 Enea - Original prototype + * + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#ifdef CONFIG_MISC_DEV +#include +#endif +#include +#include +#include + +#define rm31100 0x0 +#define rm3110x 0x1 + +#define INVALID_DATA 0xff +#define MAX_REPORT_TOUCHED_POINTS 10 + +#define I2C_CLIENT_ADDR 0x39 +#define I2C_DMA_CLIENT_ADDR 0x5A + +struct rm31100_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; +}; + +struct rm3110x_ts_platform_data { + int (*power_on)(int on); + int (*dev_setup)(bool on); + const char *ts_name; + u32 dis_min_x; /* display resoltion ABS min*/ + u32 dis_max_x;/* display resoltion ABS max*/ + u32 dis_min_y; + u32 dis_max_y; + u32 min_touch; /* no.of touches supported */ + u32 max_touch; + u32 min_tid; /* track id */ + u32 max_tid; + u32 min_width;/* size of the finger */ + u32 max_width; + u32 res_x; /* TS resolution unit*/ + u32 res_y; + u32 swap_xy; + u8 nfingers; + u32 irq_gpio; + int resout_gpio; + bool wakeup; + u32 irq_cfg; +}; + +static struct rm31100_ts_data devices[] = { + [0] = { + .x_index = 2, + .y_index = 4, + .z_index = 6, + .id_index = 1, + .data_reg = 0x1, + .status_reg = 0, + .update_data = 0x0, + .touch_bytes = 6, + .touch_meta_data = 1, + .finger_size = 70, + }, +}; + +struct rm31100_ts { + struct i2c_client *client; + struct input_dev *input; + struct rm3110x_ts_platform_data *pdata; + struct rm31100_ts_data *dd; + u8 *touch_data; + u8 device_id; + u8 prev_touches; + bool is_suspended; + bool int_pending; + struct mutex access_lock; + u32 pen_irq; +}; + +struct rm31100_ts *pts; +/* +static inline u16 join_bytes(u8 a, u8 b) +{ + u16 ab = 0; + ab = ab | a; + ab = ab << 8 | b; + return ab; +} +*/ +static s32 rm31100_ts_write_reg_u8(struct i2c_client *client, u8 reg, u8 val) +{ + s32 data; + + data = i2c_smbus_write_byte_data(client, reg, val); + if (data < 0) + dev_err(&client->dev, "error %d in writing reg 0x%x\n", + data, reg); + + return data; +} + +static s32 rm31100_ts_read_reg_u8(struct i2c_client *client, u8 reg) +{ + s32 data; + + data = i2c_smbus_read_byte_data(client, reg); + if (data < 0) + dev_err(&client->dev, "error %d in reading reg 0x%x\n", + data, reg); + + return data; +} + +static int rm31100_ts_read(struct i2c_client *client, u8 reg, u8 *buf, int num) +{ + struct i2c_msg xfer_msg[2]; + + xfer_msg[0].addr = client->addr; + xfer_msg[0].len = 1; + xfer_msg[0].flags = 0; + xfer_msg[0].buf = ® + + xfer_msg[1].addr = client->addr; + xfer_msg[1].len = num; + xfer_msg[1].flags = I2C_M_RD; + xfer_msg[1].buf = buf; + + return i2c_transfer(client->adapter, xfer_msg, 2); +} + +static int rm31100_ts_write_client_dma(struct i2c_client *client, u8 *buf, int num) +{ + struct i2c_msg xfer_msg[1]; + + xfer_msg[0].addr = I2C_DMA_CLIENT_ADDR; + xfer_msg[0].len = num; + xfer_msg[0].flags = 0; + xfer_msg[0].buf = buf; + + return i2c_transfer(client->adapter, xfer_msg, 1); +} + +static int rm31100_ts_write(struct i2c_client *client, u8 *buf, int num) +{ + struct i2c_msg xfer_msg[1]; + + xfer_msg[0].addr = client->addr; + xfer_msg[0].len = num; + xfer_msg[0].flags = 0; + xfer_msg[0].buf = buf; + + return i2c_transfer(client->adapter, xfer_msg, 1); +} +#ifdef CONFIG_MISC_DEV +static int dev_open(struct inode *inode, struct file *filp) +{ + mutex_lock(&pts->access_lock); + return 0; +} + +static int dev_release(struct inode *inode, struct file *filp) +{ + mutex_unlock(&pts->access_lock); + return 0; +} +static ssize_t +dev_read(struct file *filp, char __user *buf, size_t count, loff_t *pos) +{ + u8 *kbuf; + struct i2c_msg xfer_msg; + /*static char out[] = "1234567890";*/ + /*static int idx;*//*= 0; remove by checkpatch*/ + int i; + + kbuf = kmalloc(count, GFP_KERNEL); + if (kbuf == NULL) + return -ENOMEM; + + /*xfer_msg.addr = pts->client->addr;*/ + xfer_msg.addr = I2C_CLIENT_ADDR; + xfer_msg.len = count; + xfer_msg.flags = I2C_M_RD; + xfer_msg.buf = kbuf; + + i2c_transfer(pts->client->adapter, &xfer_msg, 1); + + if (copy_to_user(buf, kbuf, count) == 0) + return count; + else + return -EFAULT; +} + +static ssize_t +dev_write(struct file *filp, const char __user *buf, size_t count, loff_t *pos) +{ + u8 *kbuf; + ssize_t status = 0; + int i; + + kbuf = kmalloc(count, GFP_KERNEL); + if (kbuf == NULL) { + dev_err("kmalloc() fail\n"); + return -ENOMEM; + } + + if (copy_from_user(kbuf, buf, count) == 0) { + pts->client->addr = I2C_CLIENT_ADDR; + if (rm31100_ts_write(pts->client, kbuf, count) < 0) + status = -EFAULT; + else + status = count; + } else { + dev_err("copy_from_user() fail\n"); + status = -EFAULT; + } + + kfree(kbuf); + return status; +} + +static struct file_operations dev_fops = { + .owner = THIS_MODULE, + .open = dev_open, + .release = dev_release, + .read = dev_read, + .write = dev_write, + /*.unlocked_ioctl = dev_ioctl,*/ +}; + +static struct miscdevice raydium_ts_miscdev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "raydium_ts", + .fops = &dev_fops, +}; +#endif + + +ssize_t show(struct device_driver *drv, char *buff) +{ + struct i2c_msg xfer_msg; + int num = 10; + char buf[100]; + /*int i;*/ + + xfer_msg.addr = pts->client->addr; + xfer_msg.len = num; + xfer_msg.flags = I2C_M_RD; + xfer_msg.buf = buf; + pts->client->addr = I2C_CLIENT_ADDR; + i2c_transfer(pts->client->adapter, &xfer_msg, 1); + + return 0; +} + +ssize_t store(struct device_driver *drv, const char *buf, size_t count) +{ + /*unsigned char pkt[] = { 0xF2, 5, 1, 1 };*/ + unsigned char pkt[] = { 0xF1, 5, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0}; + + pts->client->addr = I2C_CLIENT_ADDR; + rm31100_ts_write(pts->client, pkt, sizeof(pkt)); + + return sizeof(pkt); +} + +DRIVER_ATTR(myAttr, 0x777, show, store); + +static void report_data(struct rm31100_ts *dev, u16 x, u16 y, + u8 pressure, u8 id) +{ + struct input_dev *input_dev = dev->input; + if (dev->pdata->swap_xy) + swap(x, y); + + input_mt_slot(input_dev, id); + input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, true); + input_report_abs(input_dev, ABS_MT_POSITION_X, x); + input_report_abs(input_dev, ABS_MT_POSITION_Y, y); + input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); + input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, dev->dd->finger_size); +/* + dev_dbg("%s(): id =%2hhd, x =%4hd, y =%4hd, pressure = %hhd\n", + __func__, id, x, y, pressure); +*/ +} + +static void process_rm31100_data(struct rm31100_ts *ts) +{ + u8 id, pressure, touches, i; + u16 x, y; + + touches = ts->touch_data[ts->dd->touch_index]; + + if (touches > 0) { + for (i = 0; i < touches; i++) { + id = ts->touch_data[i * ts->dd->touch_bytes + + ts->dd->id_index]; + pressure = ts->touch_data[i * ts->dd->touch_bytes + + ts->dd->z_index]; + x = get_unaligned_le16(&(ts->touch_data[i * + ts->dd->touch_bytes + ts->dd->x_index])); + y = get_unaligned_le16(&(ts->touch_data[i * + ts->dd->touch_bytes + ts->dd->y_index])); + report_data(ts, x, y, pressure, id); + } + } else + input_mt_sync(ts->input); + + ts->prev_touches = touches; + /*input_report_key(ts->input, BTN_TOUCH, 1);*/ + input_mt_report_pointer_emulation(ts->input, true); + input_sync(ts->input); +} + +/*static void rm31100_ts_xy_worker(struct work_struct *work) JL remove*/ +static void rm31100_ts_xy_worker(struct rm31100_ts *work) +{ + int rc; + u8 client_dma_package[4] = {0x0f, 0x00, 0x20, 0x81}; + struct rm31100_ts *ts = work; + + if (ts->is_suspended == true) { + dev_dbg(&ts->client->dev, "TS is supended\n"); + ts->int_pending = true; + return; + } + + mutex_lock(&ts->access_lock); + /* read data from DATA_REG */ + /*RM31100 DMA Mode*/ + rc = rm31100_ts_write_client_dma(ts->client, client_dma_package, 0x04); + if (rc < 0) { + dev_err(&ts->client->dev, "write client dma failed\n"); + goto schedule; + } + rc = rm31100_ts_read(ts->client, ts->dd->data_reg, ts->touch_data, + ts->dd->data_size); + + if (rc < 0) { + dev_err(&ts->client->dev, "read failed\n"); + goto schedule; + } + + if (ts->touch_data[ts->dd->touch_index] == INVALID_DATA) + goto schedule; + + /* write to STATUS_REG to release lock */ + rc = rm31100_ts_write_reg_u8(ts->client, + ts->dd->status_reg, ts->dd->update_data); + if (rc < 0) { + dev_err(&ts->client->dev, "write failed, try once more\n"); + + rc = rm31100_ts_write_reg_u8(ts->client, + ts->dd->status_reg, ts->dd->update_data); + if (rc < 0) + dev_err(&ts->client->dev, "write failed, exiting\n"); + } + + process_rm31100_data(ts); +schedule: + mutex_unlock(&ts->access_lock); +} + +static irqreturn_t rm31100_ts_irq(int irq, void *dev_id) +{ + struct rm31100_ts *ts = dev_id; + + rm31100_ts_xy_worker(ts); + return IRQ_HANDLED; +} + +static int rm31100_ts_init_ts(struct i2c_client *client, struct rm31100_ts *ts) +{ + /*struct input_dev *input_device;*/ + /*int rc = 0;*/ + + ts->dd = &devices[ts->device_id]; + + if (!ts->pdata->nfingers) { + dev_err(&client->dev, "Touches information not specified\n"); + return -EINVAL; + } + + if (ts->device_id == rm3110x) { + if (ts->pdata->nfingers > 2) { + dev_err(&client->dev, "Touches >=1 & <= 2\n"); + return -EINVAL; + } + ts->dd->data_size = ts->dd->touch_bytes; + ts->dd->touch_index = 0x0; + } else if (ts->device_id == rm31100) { + if (ts->pdata->nfingers > 10) { + dev_err(&client->dev, "Touches >=1 & <= 10\n"); + return -EINVAL; + } + ts->dd->data_size = ts->pdata->nfingers * ts->dd->touch_bytes + + ts->dd->touch_meta_data; + ts->dd->touch_index = 0x0; + } + /* w001 */ + else { + ts->dd->data_size = ts->pdata->nfingers * ts->dd->touch_bytes + + ts->dd->touch_meta_data; + ts->dd->touch_index = 0x0; + } + + 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; + } + return 0; +} + +#ifdef CONFIG_PM +static int rm31100_ts_suspend(struct device *dev) +{ + struct rm31100_ts *ts = dev_get_drvdata(dev); + int rc = 0; + + if (device_may_wakeup(dev)) { + /* mark suspend flag */ + ts->is_suspended = true; + enable_irq_wake(ts->pen_irq); + } + + disable_irq(ts->pen_irq); + + gpio_free(ts->pdata->irq_gpio); + + if (ts->pdata->power_on) { + rc = ts->pdata->power_on(0); + if (rc) { + dev_err(dev, "unable to goto suspend\n"); + return rc; + } + } + return 0; +} + +static int rm31100_ts_resume(struct device *dev) +{ + struct rm31100_ts *ts = dev_get_drvdata(dev); + + int rc = 0; + + if (device_may_wakeup(dev)) { + disable_irq_wake(ts->pen_irq); + + ts->is_suspended = false; + + if (ts->int_pending == true) + ts->int_pending = false; + } else { + if (ts->pdata->power_on) { + rc = ts->pdata->power_on(1); + if (rc) { + dev_err(dev, "unable to resume\n"); + return rc; + } + } + + enable_irq(ts->pen_irq); + + /* Clear the status register of the TS controller */ + rc = rm31100_ts_write_reg_u8(ts->client, + ts->dd->status_reg, ts->dd->update_data); + if (rc < 0) { + dev_err(&ts->client->dev, + "write failed, try once more\n"); + + rc = rm31100_ts_write_reg_u8(ts->client, + ts->dd->status_reg, + ts->dd->update_data); + if (rc < 0) + dev_err(&ts->client->dev, + "write failed, exiting\n"); + } + } + + return 0; +} + +static struct dev_pm_ops rm31100_ts_pm_ops = { + .suspend = rm31100_ts_suspend, + .resume = rm31100_ts_resume, +}; +#endif + +static int rm_input_dev_create(struct rm31100_ts *ts) +{ + struct input_dev *input_device; + int rc = 0; + ts->prev_touches = 0; + + input_device = input_allocate_device(); + if (!input_device) { + rc = -ENOMEM; + goto error_alloc_dev; + } + ts->input = input_device; + + input_device->name = "raydium_ts"; + input_device->id.bustype = BUS_I2C; + input_device->dev.parent = &ts->client->dev; + input_set_drvdata(input_device, ts); + + __set_bit(EV_ABS, input_device->evbit); + __set_bit(INPUT_PROP_DIRECT, input_device->propbit); + __set_bit(BTN_TOUCH, input_device->keybit); + + + if (ts->device_id == rm31100) { + /* set up virtual key */ + __set_bit(EV_KEY, input_device->evbit); + } + input_mt_init_slots(input_device, + MAX_REPORT_TOUCHED_POINTS, 0); + input_set_abs_params(input_device, ABS_MT_POSITION_X, + ts->pdata->dis_min_x, ts->pdata->dis_max_x, 0, 0); + input_set_abs_params(input_device, ABS_MT_POSITION_Y, + ts->pdata->dis_min_y, ts->pdata->dis_max_y, 0, 0); + input_set_abs_params(input_device, ABS_MT_PRESSURE, + 0, 0xFF, 0, 0); + input_set_abs_params(input_device, ABS_MT_TOUCH_MAJOR, + 0, 0xFF, 0, 0); + rc = input_register_device(input_device); + if (rc) + goto error_unreg_device; + + return 0; + +error_unreg_device: + input_free_device(input_device); +error_alloc_dev: + ts->input = NULL; + return rc; +} + +static int rm31100_initialize(struct i2c_client *client) +{ + struct rm31100_ts *ts = i2c_get_clientdata(client); + int rc = 0, /*retry_cnt = 0,*/ temp_reg; + /* power on the device */ + if (ts->pdata->power_on) { + rc = ts->pdata->power_on(1); + if (rc) { + pr_err("%s: Unable to power on the device\n", __func__); + goto error_dev_setup; + } + } + + /* read one byte to make sure i2c device exists */ + if (ts->device_id == rm3110x) + temp_reg = 0x01; + else if (ts->device_id == rm31100) + temp_reg = 0x00; + else + temp_reg = 0x05; + + rc = rm31100_ts_read_reg_u8(client, temp_reg); + if (rc < 0) { + dev_err(&client->dev, "i2c sanity check failed\n"); + goto error_power_on; + } + + rc = rm31100_ts_init_ts(client, ts); + if (rc < 0) { + dev_err(&client->dev, "rm31100_ts init failed\n"); + goto error_mutex_destroy; + } + + /* configure touchscreen reset out gpio */ + rc = gpio_request(ts->pdata->resout_gpio, "rm31100_resout_gpio"); + if (rc) { + pr_err("%s: unable to request gpio %d\n", + __func__, ts->pdata->resout_gpio); + goto error_uninit_ts; + } + + rc = gpio_direction_output(ts->pdata->resout_gpio, 0); + if (rc) { + pr_err("%s: unable to set direction for gpio %d\n", + __func__, ts->pdata->resout_gpio); + goto error_resout_gpio_dir; + } + /* reset gpio stabilization time */ + msleep(20); + + return 0; +error_resout_gpio_dir: + if (ts->pdata->resout_gpio >= 0) + gpio_free(ts->pdata->resout_gpio); +error_uninit_ts: + input_unregister_device(ts->input); + kfree(ts->touch_data); +error_mutex_destroy: + mutex_destroy(&ts->access_lock); +error_power_on: + if (ts->pdata->power_on) + ts->pdata->power_on(0); +error_dev_setup: + if (ts->pdata->dev_setup) + ts->pdata->dev_setup(0); + return rc; +} + +static void rm_initialize_async(void *data, async_cookie_t cookie) +{ + struct rm31100_ts *ts = data; + struct i2c_client *client = ts->client; + unsigned long irqflags; + int err = 0; + + mutex_lock(&ts->access_lock); + + err = rm31100_initialize(client); + if (err < 0) { + dev_err(&client->dev, "probe failed! unbind device.\n"); + goto error_free_mem; + } + + err = rm_input_dev_create(ts); + if (err) { + dev_err(&client->dev, "%s crated failed, %d\n", __func__, err); + goto error_goio_release; + } + + irqflags = client->dev.of_node ? 0 : IRQF_TRIGGER_FALLING; + + err = request_threaded_irq(ts->pen_irq, NULL, + rm31100_ts_irq, + irqflags | IRQF_ONESHOT, + ts->client->dev.driver->name, ts); + if (err) { + dev_err(&client->dev, "Failed to register interrupt\n"); + goto error_dev_release; + } + + mutex_unlock(&ts->access_lock); + + return; + +error_dev_release: + input_free_device(ts->input); +error_goio_release: + if (ts->pdata->resout_gpio >= 0) + gpio_free(ts->pdata->resout_gpio); +error_free_mem: + mutex_unlock(&ts->access_lock); + kfree(ts); + return; +} + + +/*static int __devinit rm31100_ts_probe(struct i2c_client *client, + const struct i2c_device_id *id)*/ +static int rm31100_ts_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct rm31100_ts *ts; + struct rm3110x_ts_platform_data *pdata = client->dev.platform_data; + int rc/*, temp_reg*/; + union i2c_smbus_data dummy; + + if (!pdata) { + dev_err(&client->dev, "platform data is required!\n"); + return -EINVAL; + } + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_READ_WORD_DATA)) { + dev_err(&client->dev, "I2C functionality not supported\n"); + return -EIO; + } + /* Make sure there is something at this address */ + if (i2c_smbus_xfer(client->adapter, client->addr, 0, + I2C_SMBUS_READ, 0, I2C_SMBUS_BYTE, &dummy) < 0) + return -ENODEV; + + ts = kzalloc(sizeof(*ts), GFP_KERNEL); + if (!ts) + return -ENOMEM; + pts = ts; + + /* Enable runtime PM ops, start in ACTIVE mode */ + rc = pm_runtime_set_active(&client->dev); + if (rc < 0) + dev_warn(&client->dev, "unable to set runtime pm state\n"); + pm_runtime_enable(&client->dev); + + ts->client = client; + ts->pdata = pdata; + i2c_set_clientdata(client, ts); + ts->device_id = id->driver_data; + + if (ts->pdata->dev_setup) { + rc = ts->pdata->dev_setup(1); + if (rc < 0) { + dev_err(&client->dev, "dev setup failed\n"); + goto error_touch_data_alloc; + } + } + + + ts->is_suspended = false; + ts->int_pending = false; + /*mutex_init(&ts->sus_lock); JL remove*/ + mutex_init(&ts->access_lock); + + async_schedule(rm_initialize_async, ts); + + device_init_wakeup(&client->dev, ts->pdata->wakeup); + return 0; + +error_touch_data_alloc: + pm_runtime_set_suspended(&client->dev); + pm_runtime_disable(&client->dev); + kfree(ts); + return rc; +} + +/*static int __devexit RM31100_ts_remove(struct i2c_client *client)*/ +static int rm31100_ts_remove(struct i2c_client *client) +{ + struct rm31100_ts *ts = i2c_get_clientdata(client); + + pm_runtime_set_suspended(&client->dev); + pm_runtime_disable(&client->dev); + + device_init_wakeup(&client->dev, 0); + free_irq(ts->pen_irq, ts); + + gpio_free(ts->pdata->irq_gpio); + + if (ts->pdata->resout_gpio >= 0) + gpio_free(ts->pdata->resout_gpio); + input_unregister_device(ts->input); + + /*mutex_destroy(&ts->sus_lock); JL remove*/ + mutex_destroy(&ts->access_lock); + + if (ts->pdata->power_on) + ts->pdata->power_on(0); + + if (ts->pdata->dev_setup) + ts->pdata->dev_setup(0); + + kfree(ts->touch_data); + kfree(ts); + + return 0; +} + +static const struct i2c_device_id rm31100_ts_id[] = { + {"RM31100", rm31100}, + {"RM3110x", rm3110x}, + {} +}; +MODULE_DEVICE_TABLE(i2c, rm31100_ts_id); + + +static struct i2c_driver rm31100_ts_driver = { + .driver = { + .name = "raydium_ts", + .owner = THIS_MODULE, +#ifdef CONFIG_PM + .pm = &rm31100_ts_pm_ops, +#endif + }, + .probe = rm31100_ts_probe, + .remove = rm31100_ts_remove, + .id_table = rm31100_ts_id, +}; + +static int __init rm31100_ts_init(void) +{ + int rc; + int rc2; + + rc = i2c_add_driver(&rm31100_ts_driver); + + rc2 = driver_create_file(&rm31100_ts_driver.driver, + &driver_attr_myAttr); + + return rc; +} +/* Making this as late init to avoid power fluctuations + * during LCD initialization. + */ +module_init(rm31100_ts_init); + +static void __exit rm31100_ts_exit(void) +{ + i2c_del_driver(&rm31100_ts_driver); +} +module_exit(rm31100_ts_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("rm31100-rm3110x touchscreen controller driver"); +MODULE_AUTHOR("Raydium"); +MODULE_ALIAS("platform:rm31100_ts"); -- 2.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/