diff options
Diffstat (limited to 'drivers/input/touchscreen/sitronix/sitronix_i2c.c')
| -rwxr-xr-x | drivers/input/touchscreen/sitronix/sitronix_i2c.c | 817 |
1 files changed, 817 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/sitronix/sitronix_i2c.c b/drivers/input/touchscreen/sitronix/sitronix_i2c.c new file mode 100755 index 00000000..7b79aaf4 --- /dev/null +++ b/drivers/input/touchscreen/sitronix/sitronix_i2c.c @@ -0,0 +1,817 @@ +/* drivers/input/touchscreen/sis_i2c.c + * + * Copyright (C) 2009 SiS, 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/i2c.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/linkage.h> +#include <linux/slab.h> +#include <linux/irq.h> +#include <linux/gpio.h> +#include <mach/wmt_iomux.h> +#include <mach/hardware.h> +#include <asm/uaccess.h> +#ifdef CONFIG_HAS_EARLYSUSPEND +#include <linux/earlysuspend.h> +#endif +#include "sitronix_i2c.h" +#include "irq_gpio.h" + +struct sitronix_data *pContext=NULL; +struct i2c_client *l_client=NULL; + +#ifdef TOUCH_KEY + +#define MENU_IDX 0 +#define HOME_IDX 1 +#define BACK_IDX 2 +#define SEARCH_IDX 3 +#define NUM_KEYS 4 + +static int virtual_keys[NUM_KEYS] ={ + KEY_BACK, + KEY_HOME, + KEY_MENU, + KEY_SEARCH +}; +#endif + +#define I2C_BUS1 1 + + +#ifdef CONFIG_HAS_EARLYSUSPEND +static void sitronix_early_suspend(struct early_suspend *h); +static void sitronix_late_resume(struct early_suspend *h); +#endif + +static int sitronix_read(struct sitronix_data *sitronix, u8 *rxdata, int length) +{ + int ret; + struct i2c_msg msg[2]; + + msg[0].addr = sitronix->addr; + msg[0].flags = 0 | I2C_M_NOSTART; + msg[0].len = 1; + msg[0].buf = rxdata; + + msg[1].addr = sitronix->addr; + msg[1].flags = I2C_M_RD; + msg[1].len = length; + msg[1].buf = rxdata; + + //ret = wmt_i2c_xfer_continue_if_4(msg, 2, I2C_BUS1); + ret = i2c_transfer(l_client->adapter, msg, 2); + if (ret <= 0) + dbg_err("msg i2c read error: %d\n", ret); + + return ret; +} + +#ifdef SITRONIX_DEBUG +static int sitronix_write(struct sitronix_data *sitronix, u8 *txdata, int length) +{ + int ret; + struct i2c_msg msg[1]; + + msg[0].addr = sitronix->addr; + msg[0].flags = 0; + msg[0].len = length; + msg[0].buf = txdata; + + //ret = wmt_i2c_xfer_continue_if_4(msg, 1, I2C_BUS1); + ret = i2c_transfer(l_client->adapter, msg, 1); + if (ret <= 0) + dbg_err("msg i2c read error: %d\n", ret); + + return ret; +} + +static int sitronix_get_fw_revision(struct sitronix_data *sitronix) +{ + int ret = 0; + uint8_t buffer[4]={FIRMWARE_REVISION_3,0}; + + ret = sitronix_read(sitronix, buffer, 4); + if (ret < 0){ + dbg_err("read fw revision error (%d)\n", ret); + return ret; + } + + memcpy(sitronix->fw_revision, buffer, 4); + printk("Fw Revision (hex): %x%x%x%x\n", buffer[0], buffer[1], buffer[2], buffer[3]); + + return 0; +} + +static int sitronix_get_max_touches(struct sitronix_data *sitronix) +{ + int ret = 0; + uint8_t buffer[1]={MAX_NUM_TOUCHES}; + + ret = sitronix_read(sitronix, buffer, 1); + if (ret < 0){ + dbg_err("read max touches error (%d)\n", ret); + return ret; + } + + sitronix->max_touches = buffer[0]; + printk("max touches = %d \n",sitronix->max_touches); + + return 0; +} + +static int sitronix_get_protocol(struct sitronix_data *sitronix) +{ + int ret = 0; + uint8_t buffer[1]={I2C_PROTOCOL}; + + ret = sitronix_read(sitronix, buffer, 1); + if (ret < 0){ + dbg_err("read i2c protocol error (%d)\n", ret); + return ret; + } + + sitronix->touch_protocol_type = buffer[0] & I2C_PROTOCOL_BMSK; + sitronix->sensing_mode = (buffer[0] & (ONE_D_SENSING_CONTROL_BMSK << ONE_D_SENSING_CONTROL_SHFT)) >> ONE_D_SENSING_CONTROL_SHFT; + printk("i2c protocol = %d ,sensing mode = %d \n", sitronix->touch_protocol_type, sitronix->sensing_mode); + + return 0; +} + +static int sitronix_get_resolution(struct sitronix_data *sitronix) +{ + int ret = 0; + uint8_t buffer[3]={XY_RESOLUTION_HIGH}; + + ret = sitronix_read(sitronix, buffer, 3); + if (ret < 0){ + dbg_err("read resolution error (%d)\n", ret); + return ret; + } + + sitronix->resolution_x = ((buffer[0] & (X_RES_H_BMSK << X_RES_H_SHFT)) << 4) | buffer[1]; + sitronix->resolution_y = ((buffer[0] & Y_RES_H_BMSK) << 8) | buffer[2]; + printk("Resolution: %d x %d\n", sitronix->resolution_x, sitronix->resolution_y); + + return 0; +} + +static int sitronix_get_chip_id(struct sitronix_data *sitronix) +{ + int ret = 0; + uint8_t buffer[3]={CHIP_ID}; + + ret = sitronix_read(sitronix, buffer, 3); + if (ret < 0){ + dbg_err("read Chip ID error (%d)\n", ret); + return ret; + } + + if(buffer[0] == 0){ + if(buffer[1] + buffer[2] > 32) + sitronix->chip_id = 2; + else + sitronix->chip_id = 0; + }else + sitronix->chip_id = buffer[0]; + + sitronix->Num_X = buffer[1]; + sitronix->Num_Y = buffer[2]; + printk("Chip ID = %d, Num_X = %d, Num_Y = %d\n", sitronix->chip_id, sitronix->Num_X, sitronix->Num_Y); + + return 0; +} + +static int sitronix_get_device_status(struct sitronix_data *sitronix) +{ + int ret = 0; + uint8_t buf[3]={FIRMWARE_VERSION,0}; + + ret = sitronix_read(sitronix, buf, 3); + if (ret < 0){ + dbg_err("read resolution error (%d)\n", ret); + return ret; + } + + printk("Firmware version:%02x, Status Reg:%02x,Ctrl Reg:%02x\n", buf[0], buf[1],buf[2]); + return 0; + +} + +static int sitronix_get_device_info(struct sitronix_data *sitronix) +{ + int ret = 0; + + ret = sitronix_get_resolution(sitronix); + if(ret < 0) return ret; + + ret = sitronix_get_chip_id(sitronix); + if(ret < 0) return ret; + + ret = sitronix_get_fw_revision(sitronix); + if(ret < 0) return ret; + + ret = sitronix_get_protocol(sitronix); + if(ret < 0) return ret; + + ret = sitronix_get_max_touches(sitronix); + if(ret < 0) return ret; + + ret = sitronix_get_device_status(sitronix); + if(ret < 0) return ret; + + if((sitronix->fw_revision[0] == 0) && (sitronix->fw_revision[1] == 0)){ + if(sitronix->touch_protocol_type == SITRONIX_RESERVED_TYPE_0){ + sitronix->touch_protocol_type = SITRONIX_B_TYPE; + printk("i2c protocol (revised) = %d \n", sitronix->touch_protocol_type); + } + } + + if(sitronix->touch_protocol_type == SITRONIX_A_TYPE) + sitronix->pixel_length = PIXEL_DATA_LENGTH_A; + else if(sitronix->touch_protocol_type == SITRONIX_B_TYPE){ + sitronix->pixel_length = PIXEL_DATA_LENGTH_B; + sitronix->max_touches = 2; + printk("max touches (revised) = %d \n", sitronix->max_touches); + } + + return 0; +} +#endif + +static void sitronix_read_work(struct work_struct *work) +{ + struct sitronix_data *sitronix= container_of(work, struct sitronix_data, read_work); + int ret = -1; + u8 buf[22] = {FINGERS,0}; + u8 i = 0, fingers = 0, tskey = 0; + u16 px = 0, py = 0; + u16 x = 0, y = 0; + + ret = sitronix_read(sitronix, buf,sizeof(buf)); + if(ret <= 0){ + dbg_err("get raw data failed!\n"); + goto err_exit; + } + + fingers = buf[0]&0x0f; + if( fingers ){ + /* Report co-ordinates to the multi-touch stack */ + for(i=0; i < fingers; i++){ + if(sitronix->swap){ + y = ((buf[i*4+2]<<4)&0x0700)|buf[i*4+3]; + x = ((buf[i*4+2]<<8)&0x0700)|buf[i*4+4]; + }else{ + x = ((buf[i*4+2]<<4)&0x0700)|buf[i*4+3]; + y = ((buf[i*4+2]<<8)&0x0700)|buf[i*4+4]; + } + + if(!(buf[i*4+2]&0x80)) continue; /*check valid bit */ + + + if(x > sitronix->xresl ) x = sitronix->xresl ; + if(y > sitronix->yresl ) y = sitronix->yresl ; + + px = x; + py = y; + if(sitronix->xch) px = sitronix->xresl - x; + if(sitronix->ych) py = sitronix->yresl - y; + + if (sitronix->lcd_exchg) { + int tmp; + tmp = px; + px = py; + py = sitronix->xresl - tmp; + } + + input_report_abs(sitronix->input_dev, ABS_MT_POSITION_X, px); + input_report_abs(sitronix->input_dev, ABS_MT_POSITION_Y, py); + input_report_abs(sitronix->input_dev, ABS_MT_TRACKING_ID, i+1); + input_mt_sync(sitronix->input_dev); + sitronix->penup = 0; + if(sitronix->dbg) printk("F%d,raw data: x=%-4d, y=%-4d; report data: px=%-4d, py=%-4d\n", i, x, y, px, py); + } + input_sync(sitronix->input_dev); + + } + else if(!sitronix->penup){ + dbg("pen up.\n"); + sitronix->penup = 1; + input_mt_sync(sitronix->input_dev); + input_sync(sitronix->input_dev); + } + + /* virtual keys */ + tskey = buf[1]; + if(tskey){ + if(!sitronix->tkey_idx){ + sitronix->tkey_idx = tskey; + input_report_key(sitronix->input_dev,virtual_keys[sitronix->tkey_idx>>1] , 1); + input_sync(sitronix->input_dev); + dbg("virtual key down, idx=%d\n",sitronix->tkey_idx); + } + }else{ + if(sitronix->tkey_idx){ + dbg("virtual key up , idx=%d\n",sitronix->tkey_idx); + input_report_key(sitronix->input_dev,virtual_keys[sitronix->tkey_idx>>1] , 0); + input_sync(sitronix->input_dev); + sitronix->tkey_idx = tskey; + } + } + +err_exit: + wmt_enable_gpirq(sitronix->irqgpio); + return; +} + + +static irqreturn_t sitronix_isr_handler(int irq, void *dev) +{ + struct sitronix_data *sitronix = dev; + + if (wmt_is_tsint(sitronix->irqgpio)) + { + wmt_clr_int(sitronix->irqgpio); + if (wmt_is_tsirq_enable(sitronix->irqgpio)) + { + wmt_disable_gpirq(sitronix->irqgpio); + if(!sitronix->earlysus) queue_work(sitronix->workqueue, &sitronix->read_work); + } + return IRQ_HANDLED; + } + return IRQ_NONE; +} + +static void sitronix_reset(struct sitronix_data *sitronix) +{ + + gpio_set_value(sitronix->rstgpio, 1); + mdelay(5); + gpio_set_value(sitronix->rstgpio, 0); + mdelay(5); + gpio_set_value(sitronix->rstgpio, 1); + mdelay(5); + + return; +} + +static int sitronix_auto_clb(struct sitronix_data *sitronix) +{ + return 1; +} + +#ifdef CONFIG_HAS_EARLYSUSPEND +static void sitronix_early_suspend(struct early_suspend *handler) +{ + struct sitronix_data *sitronix = container_of(handler, struct sitronix_data, early_suspend); + sitronix->earlysus = 1; + wmt_disable_gpirq(sitronix->irqgpio); + return; +} + +static void sitronix_late_resume(struct early_suspend *handler) +{ + struct sitronix_data *sitronix = container_of(handler, struct sitronix_data, early_suspend); + + sitronix->earlysus = 0; + sitronix_reset(sitronix); + msleep(200); + + wmt_set_gpirq(sitronix->irqgpio, IRQ_TYPE_EDGE_FALLING); + wmt_enable_gpirq(sitronix->irqgpio); + + return; +} +#endif //CONFIG_HAS_EARLYSUSPEND + + +static int sitronix_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct sitronix_data *sitronix = platform_get_drvdata(pdev); + sitronix->earlysus = 1; + wmt_disable_gpirq(sitronix->irqgpio); + return 0; +} + +static int sitronix_resume(struct platform_device *pdev) +{ + struct sitronix_data *sitronix = platform_get_drvdata(pdev); + + sitronix->earlysus = 0; + sitronix_reset(sitronix); + msleep(200); + + wmt_set_gpirq(sitronix->irqgpio, IRQ_TYPE_EDGE_FALLING); + wmt_enable_gpirq(sitronix->irqgpio); + return 0; +} + +static ssize_t cat_dbg(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "dbg \n"); +} + +static ssize_t echo_dbg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +{ + struct sitronix_data *sitronix = pContext; + + sscanf(buf,"%d",&sitronix->dbg); + + return count; +} +static DEVICE_ATTR(dbg, S_IRUGO | S_IWUSR, cat_dbg, echo_dbg); + +static ssize_t cat_clb(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "calibrate --echo 1 >clb \n"); +} + +static ssize_t echo_clb(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +{ + int cal ; + struct sitronix_data *sitronix = pContext; + + sscanf(buf, "%d", &cal); + if(cal){ + if(sitronix_auto_clb(sitronix) <= 0) printk("Auto calibrate failed.\n"); + } + + return count; +} +static DEVICE_ATTR(clb, S_IRUGO | S_IWUSR, cat_clb, echo_clb); + +static struct attribute *sitronix_attributes[] = { + &dev_attr_clb.attr, + &dev_attr_dbg.attr, + NULL +}; + +static const struct attribute_group sitronix_group = { + .attrs = sitronix_attributes, +}; + +static int sitronix_sysfs_create_group(struct sitronix_data *sitronix, const struct attribute_group *group) +{ + int err; + + sitronix->kobj = kobject_create_and_add("wmtts", NULL) ; + if(!sitronix->kobj){ + dbg_err("kobj create failed.\n"); + return -ENOMEM; + } + + /* Register sysfs hooks */ + err = sysfs_create_group(sitronix->kobj, group); + if (err < 0){ + kobject_del(sitronix->kobj); + dbg_err("Create sysfs group failed!\n"); + return -ENOMEM; + } + + return 0; +} + +static void sitronix_sysfs_remove_group(struct sitronix_data *sitronix, const struct attribute_group *group) +{ + sysfs_remove_group(sitronix->kobj, group); + kobject_del(sitronix->kobj); + return; +} + +static int sitronix_probe(struct platform_device *pdev) +{ + int i; + int err = 0; + struct sitronix_data *sitronix = platform_get_drvdata(pdev); + + INIT_WORK(&sitronix->read_work, sitronix_read_work); + sitronix->workqueue = create_singlethread_workqueue(sitronix->name); + if (!sitronix->workqueue) { + err = -ESRCH; + goto exit_create_singlethread; + } + + err = sitronix_sysfs_create_group(sitronix, &sitronix_group); + if(err < 0){ + dbg("create sysfs group failed.\n"); + goto exit_create_group; + } + + sitronix->input_dev = input_allocate_device(); + if (!sitronix->input_dev) { + err = -ENOMEM; + dbg("failed to allocate input device\n"); + goto exit_input_dev_alloc_failed; + } + + sitronix->input_dev->name = sitronix->name; + sitronix->input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); + set_bit(INPUT_PROP_DIRECT, sitronix->input_dev->propbit); + + if (sitronix->lcd_exchg) { + input_set_abs_params(sitronix->input_dev, + ABS_MT_POSITION_X, 0, sitronix->yresl, 0, 0); + input_set_abs_params(sitronix->input_dev, + ABS_MT_POSITION_Y, 0, sitronix->xresl, 0, 0); + } else { + input_set_abs_params(sitronix->input_dev, + ABS_MT_POSITION_X, 0, sitronix->xresl, 0, 0); + input_set_abs_params(sitronix->input_dev, + ABS_MT_POSITION_Y, 0, sitronix->yresl, 0, 0); + } + input_set_abs_params(sitronix->input_dev, + ABS_MT_TRACKING_ID, 0, 20, 0, 0); +#ifdef TOUCH_KEY + for (i = 0; i <NUM_KEYS; i++) + set_bit(virtual_keys[i], sitronix->input_dev->keybit); + + sitronix->input_dev->keycode = virtual_keys; + sitronix->input_dev->keycodesize = sizeof(unsigned int); + sitronix->input_dev->keycodemax = NUM_KEYS; +#endif + + err = input_register_device(sitronix->input_dev); + if (err) { + dbg_err("sitronix_ts_probe: failed to register input device.\n"); + goto exit_input_register_device_failed; + } + +#ifdef CONFIG_HAS_EARLYSUSPEND + sitronix->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1; + sitronix->early_suspend.suspend = sitronix_early_suspend; + sitronix->early_suspend.resume = sitronix_late_resume; + register_early_suspend(&sitronix->early_suspend); +#endif + + if(request_irq(sitronix->irq, sitronix_isr_handler, IRQF_SHARED, sitronix->name, sitronix) < 0){ + dbg_err("Could not allocate irq for ts_sitronix !\n"); + err = -1; + goto exit_register_irq; + } + + wmt_set_gpirq(sitronix->irqgpio, IRQ_TYPE_EDGE_FALLING); + wmt_enable_gpirq(sitronix->irqgpio); + sitronix_reset(sitronix); + msleep(200); +#ifdef SITRONIX_DEBUG + sitronix_get_device_info(sitronix); +#endif + + return 0; + +exit_register_irq: +#ifdef CONFIG_HAS_EARLYSUSPEND + unregister_early_suspend(&sitronix->early_suspend); +#endif +exit_input_register_device_failed: + input_free_device(sitronix->input_dev); +exit_input_dev_alloc_failed: + sitronix_sysfs_remove_group(sitronix, &sitronix_group); +exit_create_group: + cancel_work_sync(&sitronix->read_work); + destroy_workqueue(sitronix->workqueue); +exit_create_singlethread: + //kfree(sitronix); + return err; +} + +static int sitronix_remove(struct platform_device *pdev) +{ + struct sitronix_data *sitronix = platform_get_drvdata(pdev); + + cancel_work_sync(&sitronix->read_work); + flush_workqueue(sitronix->workqueue); + destroy_workqueue(sitronix->workqueue); + + free_irq(sitronix->irq, sitronix); + wmt_disable_gpirq(sitronix->irqgpio); + +#ifdef CONFIG_HAS_EARLYSUSPEND + unregister_early_suspend(&sitronix->early_suspend); +#endif + input_unregister_device(sitronix->input_dev); + + sitronix_sysfs_remove_group(sitronix, &sitronix_group); + //kfree(sitronix); + + dbg("remove...\n"); + return 0; +} + +static void sitronix_release(struct device *device) +{ + return; +} + +static struct platform_device sitronix_device = { + .name = DEV_SITRONIX, + .id = 0, + .dev = {.release = sitronix_release}, +}; + +static struct platform_driver sitronix_driver = { + .driver = { + .name = DEV_SITRONIX, + .owner = THIS_MODULE, + }, + .probe = sitronix_probe, + .remove = sitronix_remove, + .suspend = sitronix_suspend, + .resume = sitronix_resume, +}; + +static int check_touch_env(struct sitronix_data *sitronix) +{ + int len = 96; + int Enable; + char retval[96] = {0}; + char *p=NULL; + int ret; + + // Get u-boot parameter + if(wmt_getsyspara("wmt.io.touch", retval, &len)) return -EIO; + + sscanf(retval,"%d:",&Enable); + //check touch enable + if(Enable == 0) return -ENODEV; + + p = strchr(retval,':'); + p++; + + if(strncmp(p,"st1536",6)) return -ENODEV; + + sitronix->name = DEV_SITRONIX; + sitronix->addr = SITRONIX_ADDR; + p = strchr(p,':'); + p++; + sscanf(p,"%d:%d:%d:%d:%d:%d:%d", + &sitronix->xresl, &sitronix->yresl, &sitronix->irqgpio, &sitronix->rstgpio, &sitronix->swap, &sitronix->xch, &sitronix->ych); + + sitronix->irq = IRQ_GPIO; + printk("%s reslx=%d, resly=%d, irqgpio_num=%d, rstgpio_num=%d, XYswap=%d, Xdirch=%d, Ydirch=%d\n", sitronix->name, + sitronix->xresl, sitronix->yresl, sitronix->irqgpio, sitronix->rstgpio, sitronix->swap, sitronix->xch, sitronix->ych); + + sitronix->penup = 1; + + memset(retval,0,sizeof(retval)); + ret = wmt_getsyspara("wmt.display.fb0", retval, &len); + if (!ret) { + int tmp[6]; + p = retval; + sscanf(p, "%d:[%d:%d:%d:%d:%d", &tmp[0], &tmp[1], &tmp[2], &tmp[3], &tmp[4], &tmp[5]); + if (tmp[4] > tmp[5]) + sitronix->lcd_exchg = 1; + } + + return 0; +} + +struct i2c_board_info ts_i2c_board_info = { + .type = DEV_SITRONIX, + .flags = 0x00, + .addr = SITRONIX_ADDR, + .platform_data = NULL, + .archdata = NULL, + .irq = -1, +}; + +static int ts_i2c_register_device (void) +{ + struct i2c_board_info *ts_i2c_bi; + struct i2c_adapter *adapter = NULL; + //struct i2c_client *client = NULL; + + ts_i2c_bi = &ts_i2c_board_info; + adapter = i2c_get_adapter(I2C_BUS1);/*in bus 1*/ + + if (NULL == adapter) { + printk("can not get i2c adapter, client address error\n"); + return -1; + } + l_client = i2c_new_device(adapter, ts_i2c_bi); + if (l_client == NULL) { + printk("allocate i2c client failed\n"); + return -1; + } + i2c_put_adapter(adapter); + return 0; +} + +static void ts_i2c_unregister_device(void) +{ + if (l_client != NULL) + { + i2c_unregister_device(l_client); + l_client = NULL; + } +} + + +static int __init sitronix_init(void) +{ + int ret = -ENOMEM; + struct sitronix_data *sitronix=NULL; + + if (ts_i2c_register_device()<0) + { + dbg("Error to run ts_i2c_register_device()!\n"); + return -1; + } + + sitronix = kzalloc(sizeof(struct sitronix_data), GFP_KERNEL); + if(!sitronix){ + dbg_err("mem alloc failed.\n"); + return -ENOMEM; + } + + pContext = sitronix; + ret = check_touch_env(sitronix); + if(ret < 0) + goto exit_free_mem; + + ret = gpio_request(sitronix->irqgpio, "ts_irq"); + if (ret < 0) { + printk("gpio(%d) touchscreen irq request fail\n", sitronix->irqgpio); + goto exit_free_mem; + } + + ret = gpio_request(sitronix->rstgpio, "ts_rst"); + if (ret < 0) { + printk("gpio(%d) touchscreen reset request fail\n", sitronix->rstgpio); + goto exit_free_irqgpio; + } + gpio_direction_output(sitronix->rstgpio, 1); + + + ret = platform_device_register(&sitronix_device); + if(ret){ + dbg_err("register platform drivver failed!\n"); + goto exit_free_gpio; + } + platform_set_drvdata(&sitronix_device, sitronix); + + ret = platform_driver_register(&sitronix_driver); + if(ret){ + dbg_err("register platform device failed!\n"); + goto exit_unregister_pdev; + } + + return ret; + +exit_unregister_pdev: + platform_device_unregister(&sitronix_device); +exit_free_gpio: + + gpio_free(sitronix->rstgpio); +exit_free_irqgpio: + gpio_free(sitronix->irqgpio); + +exit_free_mem: + kfree(sitronix); + pContext = NULL; + ts_i2c_unregister_device(); + return ret; +} + +static void sitronix_exit(void) +{ + struct sitronix_data *sitronix; + + if(!pContext) return; + + sitronix = pContext; + + gpio_free(sitronix->irqgpio); + gpio_free(sitronix->rstgpio); + + + platform_driver_unregister(&sitronix_driver); + platform_device_unregister(&sitronix_device); + kfree(pContext); + + ts_i2c_unregister_device(); + return; +} + +late_initcall(sitronix_init); +module_exit(sitronix_exit); + +MODULE_DESCRIPTION("Sitronix Multi-Touch Driver"); +MODULE_LICENSE("GPL"); + |