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add gt801 touch screen driver
This commit is contained in:
hhb
parent
470b2df328
commit
9013c7ddde
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@ -357,6 +357,28 @@ struct p1003_platform_data p1003_info = {
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};
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#endif
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#if defined(CONFIG_TOUCHSCREEN_GT801_IIC)
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#include "../../../drivers/input/touchscreen/gt801_ts.h"
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#define GT801_GPIO_INT RK29_PIN4_PD5
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#define GT801_GPIO_RESET RK29_PIN6_PC3
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static struct gt801_platform_data gt801_info = {
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.model = 801,
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.swap_xy = 0,
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.x_min = 0,
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.x_max = 480,
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.y_min = 0,
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.y_max = 800,
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.gpio_reset = GT801_GPIO_RESET,
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.gpio_reset_active_low = 1,
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.gpio_pendown = GT801_GPIO_INT,
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.pendown_iomux_name = GPIO4D5_CPUTRACECTL_NAME,
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.resetpin_iomux_name = NULL,
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.pendown_iomux_mode = GPIO4H_GPIO4D5,
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.resetpin_iomux_mode = 0,
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};
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#endif
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#if defined (CONFIG_EETI_EGALAX)
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#define TOUCH_RESET_PIN RK29_PIN6_PC3
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#define TOUCH_INT_PIN RK29_PIN4_PD5
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@ -1403,6 +1425,15 @@ static struct i2c_board_info __initdata board_i2c1_devices[] = {
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#ifdef CONFIG_I2C2_RK29
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static struct i2c_board_info __initdata board_i2c2_devices[] = {
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#if defined (CONFIG_TOUCHSCREEN_GT801_IIC)
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{
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.type = "gt801_ts",
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.addr = 0x55,
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.flags = 0,
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.irq = RK29_PIN4_PD5,
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.platform_data = >801_info,
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},
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#endif
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#if defined (CONFIG_MFD_WM831X_I2C)
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{
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.type = "wm8310",
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@ -742,4 +742,7 @@ config TOUCHSCREEN_IT7260
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If unsure, say N (but it's safe to say "Y").
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config TOUCHSCREEN_GT801_IIC
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tristate "GT801_IIC based touchscreens"
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depends on I2C2_RK29
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endif
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@ -53,3 +53,4 @@ obj-$(CONFIG_TOUCHSCREEN_IT7260) += it7260_ts.o
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obj-$(CONFIG_SINTEK_3FA16) += sintek_3FA16.o
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obj-$(CONFIG_EETI_EGALAX) += eeti_egalax_i2c.o
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obj-$(CONFIG_ATMEL_MXT224) += atmel_mxt224.o
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obj-$(CONFIG_TOUCHSCREEN_GT801_IIC) += gt801_ts.o
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644
drivers/input/touchscreen/gt801_ts.c
Executable file
644
drivers/input/touchscreen/gt801_ts.c
Executable file
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@ -0,0 +1,644 @@
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/*
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* drivers/input/touchscreen/gt801_ts.c
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*
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* Copyright (C) 2010 ROCKCHIP, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/earlysuspend.h>
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#include <linux/hrtimer.h>
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#include <linux/i2c.h>
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/gpio.h>
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#include <mach/iomux.h>
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#include <linux/platform_device.h>
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#include "gt801_ts.h"
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#define GT801_DEBUG 0
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#if GT801_DEBUG
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#define gt801printk(msg...) printk(msg);
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#else
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#define gt801printk(msg...)
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#endif
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#define SINGLTOUCH_MODE 0
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#define GT801_REGS_NUM 53
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#if SINGLTOUCH_MODE
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#define TOUCH_NUMBER 1
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#else
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#define TOUCH_NUMBER 2
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#endif
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#define TOUCH_REG_NUM 5 //每组坐标需要的寄存器数目
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const unsigned char GT801_RegData[GT801_REGS_NUM]={
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0x19,0x05,0x06,0x28,0x02,0x14,0x14,0x10,0x40,0xB0,0x01,0xE0,0x03,0x4C,0x78,0x9A,0xBC,0xDE,0x65,0x43,0x20,0x11,0x00,0x00,0x00,0x00,0x05,0xCF,0x20,0x0B,0x0D,0x8D,0x32,0x3C,0x1E,0x28,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01
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};
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struct gt801_ts_data {
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u16 model; /* 801. */
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bool swap_xy; /* swap x and y axes */
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u16 x_min, x_max;
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u16 y_min, y_max;
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uint16_t addr;
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int use_irq;
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int gpio_pendown;
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int gpio_reset;
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int gpio_reset_active_low;
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int pendown_iomux_mode;
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int resetpin_iomux_mode;
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char pendown_iomux_name[IOMUX_NAME_SIZE];
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char resetpin_iomux_name[IOMUX_NAME_SIZE];
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char phys[32];
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char name[32];
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struct i2c_client *client;
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struct input_dev *input_dev;
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struct hrtimer timer;
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struct work_struct work;
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struct early_suspend early_suspend;
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};
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/*tochscreen private data*/
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static int touch_state[TOUCH_NUMBER] = {TOUCH_UP,TOUCH_UP};
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static struct workqueue_struct *gt801_wq;
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#ifdef CONFIG_HAS_EARLYSUSPEND
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static void gt801_ts_early_suspend(struct early_suspend *h);
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static void gt801_ts_late_resume(struct early_suspend *h);
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#endif
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static int verify_coord(struct gt801_ts_data *ts,unsigned short *x,unsigned short *y)
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{
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gt801printk("%s:(%d/%d)\n",__FUNCTION__,*x, *y);
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if((*x< ts->x_min) || (*x > ts->x_max))
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return -1;
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if((*y< ts->y_min) || (*y > ts->y_max))
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return -1;
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// *x = ts->x_max - *x;
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//if(*y <780)
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*y = ts->y_max -*y;
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return 0;
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}
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/*read the gt801 register ,used i2c bus*/
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static int gt801_read_regs(struct i2c_client *client, u8 reg, u8 buf[], unsigned len)
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{
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int ret;
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ret =i2c_master_reg8_recv(client, reg, buf, len, 200*1000);
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if(ret < 0)
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printk("gt801_ts_work_func:i2c_transfer fail =%d\n",ret);
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return ret;
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}
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/* set the gt801 registe,used i2c bus*/
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static int gt801_write_regs(struct i2c_client *client, u8 reg, u8 const buf[], unsigned short len)
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{
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int ret;
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ret = i2c_master_reg8_send(client,reg, buf, len, 200*1000);
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if (ret < 0) {
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printk("gt801_ts_work_func:i2c_transfer fail =%d\n",ret);
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}
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return ret;
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}
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static int gt801_init_panel(struct gt801_ts_data *ts)
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{
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return 0;
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}
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static void gt801_ts_work_func(struct work_struct *work)
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{
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#if SINGLTOUCH_MODE
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#else
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int touch_state_index = 0;
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#endif
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unsigned char start_reg = 0x02;
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unsigned char buf[TOUCH_NUMBER*TOUCH_REG_NUM];
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unsigned short x;
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unsigned short y;
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int i,ret;
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int syn_flag = 0;
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int bufLen = TOUCH_NUMBER*TOUCH_REG_NUM;
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struct gt801_ts_data *ts = container_of(work, struct gt801_ts_data, work);
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gt801printk("%s\n",__FUNCTION__);
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ret=gt801_read_regs(ts->client, start_reg, buf,bufLen);
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if (ret < 0) {
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printk("%s:i2c_transfer fail =%d\n",__FUNCTION__,ret);
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if (ts->use_irq)
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enable_irq(ts->client->irq);
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return;
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}
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#if SINGLTOUCH_MODE
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i = 0;
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if(buf[i+ptpressure] == 0)
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{
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gt801printk(" realse ts_dev->point.x=%d ,ts_dev->point.y=%d \n",ts->point.x,ts->point.y);
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if (touch_state[i] == TOUCH_DOWN)
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{
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input_report_key(ts->input_dev,BTN_TOUCH,0);
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syn_flag = 1;
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touch_state[i] = TOUCH_UP;
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gt801printk("SINGLTOUCH_MODE up\n");
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}
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}
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else
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{
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x = ((( ((unsigned short)buf[i+ptxh] )<< 8) ) | buf[i+ptxl]);
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y= (((((unsigned short)buf[i+ptyh] )<< 8) )| buf[i+ptyl]);
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if (ts->swap_xy)
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swap(x, y);
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if (verify_coord(ts,&x,&y))
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goto out;
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if (touch_state[i] == TOUCH_UP)
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{
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gt801printk("SINGLTOUCH_MODE down\n");
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input_report_key(ts->input_dev,BTN_TOUCH,1);
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touch_state[i] = TOUCH_DOWN;
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}
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gt801printk("input_report_abs(%d/%d)\n",x,y);
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input_report_abs(ts->input_dev,ABS_X,x );
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input_report_abs(ts->input_dev,ABS_Y,y );
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syn_flag = 1;
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}
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#else
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for(i=0; i<bufLen; i+=TOUCH_REG_NUM)
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{
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if(buf[i+ptpressure] == 0){
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gt801printk("%s:buf=%d touch up\n",__FUNCTION__,buf[i+ptpressure]);
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if (touch_state[touch_state_index] == TOUCH_DOWN)
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{
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gt801printk("%s:%d touch up\n",__FUNCTION__,i);
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input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0); //Finger Size
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input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0); //Touch Size
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input_mt_sync(ts->input_dev);
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syn_flag =1;
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touch_state[touch_state_index] = TOUCH_UP;
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}
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}
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else{
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x = ((( ((unsigned short)buf[i+ptxh] )<< 8) ) | buf[i+ptxl]);
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y= (((((unsigned short)buf[i+ptyh] )<< 8) )| buf[i+ptyl]);
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if (ts->swap_xy)
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swap(x, y);
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if (verify_coord(ts,&x,&y))
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;//goto out;
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gt801printk("input_report_abs--%d-%d-(%d/%d)\n", i,touch_state_index, x, y);
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input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 1); //Finger Size
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input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x);
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input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y);
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input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 5); //Touch Size
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input_mt_sync(ts->input_dev);
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syn_flag = 1;
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touch_state[touch_state_index] = TOUCH_DOWN;
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}
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touch_state_index++;
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}
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#endif
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if(syn_flag)
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input_sync(ts->input_dev);
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out:
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if (ts->use_irq)
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enable_irq(ts->client->irq);
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return;
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}
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static enum hrtimer_restart gt801_ts_timer_func(struct hrtimer *timer)
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{
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struct gt801_ts_data *ts = container_of(timer, struct gt801_ts_data, timer);
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gt801printk("%s\n",__FUNCTION__);
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queue_work(gt801_wq, &ts->work);
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hrtimer_start(&ts->timer, ktime_set(0, 12500000), HRTIMER_MODE_REL);
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return HRTIMER_NORESTART;
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}
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static irqreturn_t gt801_ts_irq_handler(int irq, void *dev_id)
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{
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struct gt801_ts_data *ts = dev_id;
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gt801printk("%s=%d,%d\n",__FUNCTION__,ts->client->irq,ts->use_irq);
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//if (ts->use_irq)
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disable_irq_nosync(ts->client->irq);
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queue_work(gt801_wq, &ts->work);
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return IRQ_HANDLED;
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}
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static int __devinit setup_resetPin(struct i2c_client *client, struct gt801_ts_data *ts)
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{
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struct gt801_platform_data *pdata = client->dev.platform_data;
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int err;
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ts->gpio_reset = pdata->gpio_reset;
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ts->gpio_reset_active_low = pdata->gpio_reset_active_low;
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ts->resetpin_iomux_mode = pdata->resetpin_iomux_mode;
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if(pdata->resetpin_iomux_name != NULL)
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strcpy(ts->resetpin_iomux_name,pdata->resetpin_iomux_name);
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gt801printk("%s=%d,%s,%d,%d\n",__FUNCTION__,ts->gpio_reset,ts->resetpin_iomux_name,ts->resetpin_iomux_mode,ts->gpio_reset_active_low);
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if (!gpio_is_valid(ts->gpio_reset)) {
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dev_err(&client->dev, "no gpio_reset?\n");
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return -EINVAL;
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}
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rk29_mux_api_set(ts->resetpin_iomux_name,ts->resetpin_iomux_mode);
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err = gpio_request(ts->gpio_reset, "gt801_resetPin");
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if (err) {
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dev_err(&client->dev, "failed to request resetPin GPIO%d\n",
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ts->gpio_reset);
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return err;
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}
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gpio_set_value(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_LOW:GPIO_HIGH);
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err = gpio_direction_output(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_LOW:GPIO_HIGH);
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if (err) {
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dev_err(&client->dev, "failed to pulldown resetPin GPIO%d,err%d\n",
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ts->gpio_reset,err);
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gpio_free(ts->gpio_reset);
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return err;
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}
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mdelay(100);
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gpio_set_value(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_HIGH:GPIO_LOW);
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mdelay(100);
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return 0;
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}
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static int __devinit setup_pendown(struct i2c_client *client, struct gt801_ts_data *ts)
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{
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int err;
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struct gt801_platform_data *pdata = client->dev.platform_data;
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if (!client->irq) {
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dev_dbg(&client->dev, "no IRQ?\n");
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return -ENODEV;
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}
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if (!gpio_is_valid(pdata->gpio_pendown)) {
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dev_err(&client->dev, "no gpio_pendown?\n");
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return -EINVAL;
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}
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ts->gpio_pendown = pdata->gpio_pendown;
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strcpy(ts->pendown_iomux_name,pdata->pendown_iomux_name);
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ts->pendown_iomux_mode = pdata->pendown_iomux_mode;
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gt801printk("%s=%d,%s,%d\n",__FUNCTION__,ts->gpio_pendown,ts->pendown_iomux_name,ts->pendown_iomux_mode);
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if (!gpio_is_valid(ts->gpio_pendown)) {
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dev_err(&client->dev, "no gpio_pendown?\n");
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return -EINVAL;
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}
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rk29_mux_api_set(ts->pendown_iomux_name,ts->pendown_iomux_mode);
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err = gpio_request(ts->gpio_pendown, "gt801_pendown");
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if (err) {
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dev_err(&client->dev, "failed to request pendown GPIO%d\n",
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ts->gpio_pendown);
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return err;
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}
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err = gpio_pull_updown(ts->gpio_pendown, GPIOPullUp);
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if (err) {
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dev_err(&client->dev, "failed to pullup pendown GPIO%d\n",
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ts->gpio_pendown);
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gpio_free(ts->gpio_pendown);
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return err;
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}
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return 0;
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}
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static int gt801_chip_Init(struct i2c_client *client)
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{
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u8 i,j;
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int ret=0;
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u8 start_reg=0x30;
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u8 buf[GT801_REGS_NUM];
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gt801printk("enter gt801_chip_Init!!!!\n");
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for(j=0;j<2;j++)
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{
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ret=gt801_write_regs(client,start_reg, GT801_RegData,GT801_REGS_NUM);
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if(ret<0)
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{
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printk("\n--%s--Set Register values error !!!\n",__FUNCTION__);
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}
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|
||||
ret=gt801_read_regs(client, start_reg, buf,GT801_REGS_NUM);
|
||||
if(ret<0)
|
||||
{
|
||||
printk("\n--%s--Read Register values error !!!\n",__FUNCTION__);
|
||||
}
|
||||
|
||||
for(i=0;i<GT801_REGS_NUM-1;i++)
|
||||
{
|
||||
if(buf[i]!=GT801_RegData[i])
|
||||
{
|
||||
printk("!!!!!!!!gt801_chip_Init err may be i2c errorat adress=%x var=%x i=%x\n",0x30+i, buf[i],i);
|
||||
break;
|
||||
}
|
||||
}
|
||||
if(i==GT801_REGS_NUM-1)
|
||||
break;
|
||||
else if(j==1)
|
||||
return -1;
|
||||
|
||||
mdelay(500);
|
||||
}
|
||||
mdelay(100);
|
||||
|
||||
return ret;
|
||||
}
|
||||
static int gt801_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)
|
||||
{
|
||||
struct gt801_ts_data *ts;
|
||||
struct gt801_platform_data *pdata = client->dev.platform_data;
|
||||
int ret = 0;
|
||||
|
||||
gt801printk("%s \n",__FUNCTION__);
|
||||
|
||||
if (!pdata) {
|
||||
dev_err(&client->dev, "empty platform_data\n");
|
||||
goto err_check_functionality_failed;
|
||||
}
|
||||
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
|
||||
printk(KERN_ERR "gt801_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, gt801_ts_work_func);
|
||||
ts->client = client;
|
||||
i2c_set_clientdata(client, ts);
|
||||
|
||||
ret = setup_resetPin(client,ts);
|
||||
if(ret)
|
||||
{
|
||||
printk("%s:setup_resetPin fail\n",__FUNCTION__);
|
||||
goto err_input_dev_alloc_failed;
|
||||
}
|
||||
|
||||
ret=gt801_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 "%s: Failed to allocate input device\n",__FUNCTION__);
|
||||
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;
|
||||
|
||||
#if SINGLTOUCH_MODE
|
||||
ts->input_dev->evbit[0] = BIT_MASK(EV_ABS)|BIT_MASK(EV_KEY);
|
||||
ts->input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
|
||||
input_set_abs_params(ts->input_dev,ABS_X,
|
||||
ts->x_min ? : 0,
|
||||
ts->x_max ? : 480,
|
||||
0, 0);
|
||||
input_set_abs_params(ts->input_dev,ABS_Y,
|
||||
ts->y_min ? : 0,
|
||||
ts->y_max ? : 800,
|
||||
0, 0);
|
||||
|
||||
#else
|
||||
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
|
||||
#endif
|
||||
ret = input_register_device(ts->input_dev);
|
||||
if (ret) {
|
||||
printk(KERN_ERR "%s: Unable to register %s input device\n", __FUNCTION__,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("%s:setup_pendown fail\n",__FUNCTION__);
|
||||
goto err_input_register_device_failed;
|
||||
}
|
||||
|
||||
ret = request_irq(client->irq, gt801_ts_irq_handler, IRQF_DISABLED | IRQF_TRIGGER_LOW, client->name, ts);
|
||||
if (ret == 0) {
|
||||
gt801printk("%s:register ISR (irq=%d)\n", __FUNCTION__,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 = gt801_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 = gt801_ts_early_suspend;
|
||||
ts->early_suspend.resume = gt801_ts_late_resume;
|
||||
register_early_suspend(&ts->early_suspend);
|
||||
#endif
|
||||
|
||||
printk(KERN_INFO "%s: Start touchscreen %s in %s mode\n", __FUNCTION__,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 gt801_ts_remove(struct i2c_client *client)
|
||||
{
|
||||
struct gt801_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);
|
||||
gpio_free(ts->gpio_pendown);
|
||||
gpio_free(ts->gpio_reset);
|
||||
kfree(ts);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int gt801_ts_suspend(struct i2c_client *client, pm_message_t mesg)
|
||||
{
|
||||
int ret;
|
||||
struct gt801_ts_data *ts = i2c_get_clientdata(client);
|
||||
|
||||
printk("gt801 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);
|
||||
|
||||
gpio_set_value(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_LOW:GPIO_HIGH);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int gt801_ts_resume(struct i2c_client *client)
|
||||
{
|
||||
struct gt801_ts_data *ts = i2c_get_clientdata(client);
|
||||
|
||||
gt801_init_panel(ts);
|
||||
|
||||
printk("gt801 TS Resume\n");
|
||||
|
||||
gpio_set_value(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_HIGH:GPIO_LOW);
|
||||
|
||||
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 gt801_ts_early_suspend(struct early_suspend *h)
|
||||
{
|
||||
struct gt801_ts_data *ts;
|
||||
ts = container_of(h, struct gt801_ts_data, early_suspend);
|
||||
gt801_ts_suspend(ts->client, PMSG_SUSPEND);
|
||||
}
|
||||
|
||||
static void gt801_ts_late_resume(struct early_suspend *h)
|
||||
{
|
||||
struct gt801_ts_data *ts;
|
||||
ts = container_of(h, struct gt801_ts_data, early_suspend);
|
||||
gt801_ts_resume(ts->client);
|
||||
}
|
||||
#endif
|
||||
|
||||
#define gt801_TS_NAME "gt801_ts"
|
||||
|
||||
static const struct i2c_device_id gt801_ts_id[] = {
|
||||
{ gt801_TS_NAME, 0 },
|
||||
{ }
|
||||
};
|
||||
|
||||
static struct i2c_driver gt801_ts_driver = {
|
||||
.probe = gt801_ts_probe,
|
||||
.remove = gt801_ts_remove,
|
||||
#ifndef CONFIG_HAS_EARLYSUSPEND
|
||||
.suspend = gt801_ts_suspend,
|
||||
.resume = gt801_ts_resume,
|
||||
#endif
|
||||
.id_table = gt801_ts_id,
|
||||
.driver = {
|
||||
.name = gt801_TS_NAME,
|
||||
},
|
||||
};
|
||||
|
||||
static int __devinit gt801_ts_init(void)
|
||||
{
|
||||
printk("%s\n",__FUNCTION__);
|
||||
gt801_wq = create_singlethread_workqueue("gt801_wq");
|
||||
if (!gt801_wq)
|
||||
return -ENOMEM;
|
||||
return i2c_add_driver(>801_ts_driver);
|
||||
}
|
||||
|
||||
static void __exit gt801_ts_exit(void)
|
||||
{
|
||||
printk("%s\n",__FUNCTION__);
|
||||
i2c_del_driver(>801_ts_driver);
|
||||
if (gt801_wq)
|
||||
destroy_workqueue(gt801_wq);
|
||||
}
|
||||
|
||||
module_init(gt801_ts_init);
|
||||
module_exit(gt801_ts_exit);
|
||||
|
||||
MODULE_DESCRIPTION("gt801 Touchscreen Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
45
drivers/input/touchscreen/gt801_ts.h
Executable file
45
drivers/input/touchscreen/gt801_ts.h
Executable file
|
|
@ -0,0 +1,45 @@
|
|||
/*
|
||||
* drivers/input/touchscreen/gt801_ts.h
|
||||
*
|
||||
* Copyright (C) 2010 ROCKCHIP, 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.
|
||||
*/
|
||||
|
||||
#ifndef __DRIVERS_TOUCHSCREEN_GT801_TS_H
|
||||
#define __DRIVERS_TOUCHSCREEN_GT801_TS_H
|
||||
|
||||
#define IOMUX_NAME_SIZE 48
|
||||
|
||||
enum regadd {
|
||||
ptxh = 0, ptxl = 1, ptyh = 2, ptyl = 3, ptpressure = 4,
|
||||
};
|
||||
enum touchstate {
|
||||
TOUCH_UP = 0, TOUCH_DOWN = 1,
|
||||
};
|
||||
|
||||
struct gt801_platform_data {
|
||||
|
||||
u16 model; /* 801. */
|
||||
bool swap_xy; /* swap x and y axes */
|
||||
u16 x_min, x_max;
|
||||
u16 y_min, y_max;
|
||||
int gpio_reset;
|
||||
int gpio_reset_active_low;
|
||||
int gpio_pendown; /* the GPIO used to decide the pendown */
|
||||
|
||||
char pendown_iomux_name[IOMUX_NAME_SIZE];
|
||||
char resetpin_iomux_name[IOMUX_NAME_SIZE];
|
||||
int pendown_iomux_mode;
|
||||
int resetpin_iomux_mode;
|
||||
|
||||
int (*get_pendown_state)(void);
|
||||
};
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user