diff options
Diffstat (limited to 'drivers/input/touchscreen/h3600_ts_input.c')
-rw-r--r-- | drivers/input/touchscreen/h3600_ts_input.c | 479 |
1 files changed, 0 insertions, 479 deletions
diff --git a/drivers/input/touchscreen/h3600_ts_input.c b/drivers/input/touchscreen/h3600_ts_input.c deleted file mode 100644 index b9e8686..0000000 --- a/drivers/input/touchscreen/h3600_ts_input.c +++ /dev/null @@ -1,479 +0,0 @@ -/* - * Copyright (c) 2001 "Crazy" James Simmons jsimmons@transvirtual.com - * - * Sponsored by Transvirtual Technology. - * - * Derived from the code in h3600_ts.[ch] by Charles Flynn - */ - -/* - * Driver for the h3600 Touch Screen and other Atmel controlled devices. - */ - -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * Should you need to contact me, the author, you can do so by - * e-mail - mail your message to <jsimmons@transvirtual.com>. - */ - -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/input.h> -#include <linux/serio.h> -#include <linux/init.h> -#include <linux/delay.h> - -/* SA1100 serial defines */ -#include <mach/hardware.h> -#include <mach/irqs.h> - -#define DRIVER_DESC "H3600 touchscreen driver" - -MODULE_AUTHOR("James Simmons <jsimmons@transvirtual.com>"); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); - -/* - * Definitions & global arrays. - */ - -/* The start and end of frame characters SOF and EOF */ -#define CHAR_SOF 0x02 -#define CHAR_EOF 0x03 -#define FRAME_OVERHEAD 3 /* CHAR_SOF,CHAR_EOF,LENGTH = 3 */ - -/* - Atmel events and response IDs contained in frame. - Programmer has no control over these numbers. - TODO there are holes - specifically 1,7,0x0a -*/ -#define VERSION_ID 0 /* Get Version (request/response) */ -#define KEYBD_ID 2 /* Keyboard (event) */ -#define TOUCHS_ID 3 /* Touch Screen (event)*/ -#define EEPROM_READ_ID 4 /* (request/response) */ -#define EEPROM_WRITE_ID 5 /* (request/response) */ -#define THERMAL_ID 6 /* (request/response) */ -#define NOTIFY_LED_ID 8 /* (request/response) */ -#define BATTERY_ID 9 /* (request/response) */ -#define SPI_READ_ID 0x0b /* ( request/response) */ -#define SPI_WRITE_ID 0x0c /* ( request/response) */ -#define FLITE_ID 0x0d /* backlight ( request/response) */ -#define STX_ID 0xa1 /* extension pack status (req/resp) */ - -#define MAX_ID 14 - -#define H3600_MAX_LENGTH 16 -#define H3600_KEY 0xf - -#define H3600_SCANCODE_RECORD 1 /* 1 -> record button */ -#define H3600_SCANCODE_CALENDAR 2 /* 2 -> calendar */ -#define H3600_SCANCODE_CONTACTS 3 /* 3 -> contact */ -#define H3600_SCANCODE_Q 4 /* 4 -> Q button */ -#define H3600_SCANCODE_START 5 /* 5 -> start menu */ -#define H3600_SCANCODE_UP 6 /* 6 -> up */ -#define H3600_SCANCODE_RIGHT 7 /* 7 -> right */ -#define H3600_SCANCODE_LEFT 8 /* 8 -> left */ -#define H3600_SCANCODE_DOWN 9 /* 9 -> down */ - -/* - * Per-touchscreen data. - */ -struct h3600_dev { - struct input_dev *dev; - struct serio *serio; - unsigned char event; /* event ID from packet */ - unsigned char chksum; - unsigned char len; - unsigned char idx; - unsigned char buf[H3600_MAX_LENGTH]; - char phys[32]; -}; - -static irqreturn_t action_button_handler(int irq, void *dev_id) -{ - int down = (GPLR & GPIO_BITSY_ACTION_BUTTON) ? 0 : 1; - struct input_dev *dev = dev_id; - - input_report_key(dev, KEY_ENTER, down); - input_sync(dev); - - return IRQ_HANDLED; -} - -static irqreturn_t npower_button_handler(int irq, void *dev_id) -{ - int down = (GPLR & GPIO_BITSY_NPOWER_BUTTON) ? 0 : 1; - struct input_dev *dev = dev_id; - - /* - * This interrupt is only called when we release the key. So we have - * to fake a key press. - */ - input_report_key(dev, KEY_SUSPEND, 1); - input_report_key(dev, KEY_SUSPEND, down); - input_sync(dev); - - return IRQ_HANDLED; -} - -#ifdef CONFIG_PM - -static int flite_brightness = 25; - -enum flite_pwr { - FLITE_PWR_OFF = 0, - FLITE_PWR_ON = 1 -}; - -/* - * h3600_flite_power: enables or disables power to frontlight, using last bright */ -unsigned int h3600_flite_power(struct input_dev *dev, enum flite_pwr pwr) -{ - unsigned char brightness = (pwr == FLITE_PWR_OFF) ? 0 : flite_brightness; - struct h3600_dev *ts = input_get_drvdata(dev); - - /* Must be in this order */ - serio_write(ts->serio, 1); - serio_write(ts->serio, pwr); - serio_write(ts->serio, brightness); - - return 0; -} - -#endif - -/* - * This function translates the native event packets to linux input event - * packets. Some packets coming from serial are not touchscreen related. In - * this case we send them off to be processed elsewhere. - */ -static void h3600ts_process_packet(struct h3600_dev *ts) -{ - struct input_dev *dev = ts->dev; - static int touched = 0; - int key, down = 0; - - switch (ts->event) { - /* - Buttons - returned as a single byte - 7 6 5 4 3 2 1 0 - S x x x N N N N - - S switch state ( 0=pressed 1=released) - x Unused. - NNNN switch number 0-15 - - Note: This is true for non interrupt generated key events. - */ - case KEYBD_ID: - down = (ts->buf[0] & 0x80) ? 0 : 1; - - switch (ts->buf[0] & 0x7f) { - case H3600_SCANCODE_RECORD: - key = KEY_RECORD; - break; - case H3600_SCANCODE_CALENDAR: - key = KEY_PROG1; - break; - case H3600_SCANCODE_CONTACTS: - key = KEY_PROG2; - break; - case H3600_SCANCODE_Q: - key = KEY_Q; - break; - case H3600_SCANCODE_START: - key = KEY_PROG3; - break; - case H3600_SCANCODE_UP: - key = KEY_UP; - break; - case H3600_SCANCODE_RIGHT: - key = KEY_RIGHT; - break; - case H3600_SCANCODE_LEFT: - key = KEY_LEFT; - break; - case H3600_SCANCODE_DOWN: - key = KEY_DOWN; - break; - default: - key = 0; - } - if (key) - input_report_key(dev, key, down); - break; - /* - * Native touchscreen event data is formatted as shown below:- - * - * +-------+-------+-------+-------+ - * | Xmsb | Xlsb | Ymsb | Ylsb | - * +-------+-------+-------+-------+ - * byte 0 1 2 3 - */ - case TOUCHS_ID: - if (!touched) { - input_report_key(dev, BTN_TOUCH, 1); - touched = 1; - } - - if (ts->len) { - unsigned short x, y; - - x = ts->buf[0]; x <<= 8; x += ts->buf[1]; - y = ts->buf[2]; y <<= 8; y += ts->buf[3]; - - input_report_abs(dev, ABS_X, x); - input_report_abs(dev, ABS_Y, y); - } else { - input_report_key(dev, BTN_TOUCH, 0); - touched = 0; - } - break; - default: - /* Send a non input event elsewhere */ - break; - } - - input_sync(dev); -} - -/* - * h3600ts_event() handles events from the input module. - */ -static int h3600ts_event(struct input_dev *dev, unsigned int type, - unsigned int code, int value) -{ -#if 0 - struct h3600_dev *ts = input_get_drvdata(dev); - - switch (type) { - case EV_LED: { - // serio_write(ts->serio, SOME_CMD); - return 0; - } - } - return -1; -#endif - return 0; -} - -/* - Frame format - byte 1 2 3 len + 4 - +-------+---------------+---------------+--=------------+ - |SOF |id |len | len bytes | Chksum | - +-------+---------------+---------------+--=------------+ - bit 0 7 8 11 12 15 16 - - +-------+---------------+-------+ - |SOF |id |0 |Chksum | - Note Chksum does not include SOF - +-------+---------------+-------+ - bit 0 7 8 11 12 15 16 - -*/ - -static int state; - -/* decode States */ -#define STATE_SOF 0 /* start of FRAME */ -#define STATE_ID 1 /* state where we decode the ID & len */ -#define STATE_DATA 2 /* state where we decode data */ -#define STATE_EOF 3 /* state where we decode checksum or EOF */ - -static irqreturn_t h3600ts_interrupt(struct serio *serio, unsigned char data, - unsigned int flags) -{ - struct h3600_dev *ts = serio_get_drvdata(serio); - - /* - * We have a new frame coming in. - */ - switch (state) { - case STATE_SOF: - if (data == CHAR_SOF) - state = STATE_ID; - break; - case STATE_ID: - ts->event = (data & 0xf0) >> 4; - ts->len = (data & 0xf); - ts->idx = 0; - if (ts->event >= MAX_ID) { - state = STATE_SOF; - break; - } - ts->chksum = data; - state = (ts->len > 0) ? STATE_DATA : STATE_EOF; - break; - case STATE_DATA: - ts->chksum += data; - ts->buf[ts->idx]= data; - if (++ts->idx == ts->len) - state = STATE_EOF; - break; - case STATE_EOF: - state = STATE_SOF; - if (data == CHAR_EOF || data == ts->chksum) - h3600ts_process_packet(ts); - break; - default: - printk("Error3\n"); - break; - } - - return IRQ_HANDLED; -} - -/* - * h3600ts_connect() is the routine that is called when someone adds a - * new serio device that supports H3600 protocol and registers it as - * an input device. - */ -static int h3600ts_connect(struct serio *serio, struct serio_driver *drv) -{ - struct h3600_dev *ts; - struct input_dev *input_dev; - int err; - - ts = kzalloc(sizeof(struct h3600_dev), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!ts || !input_dev) { - err = -ENOMEM; - goto fail1; - } - - ts->serio = serio; - ts->dev = input_dev; - snprintf(ts->phys, sizeof(ts->phys), "%s/input0", serio->phys); - - input_dev->name = "H3600 TouchScreen"; - input_dev->phys = ts->phys; - input_dev->id.bustype = BUS_RS232; - input_dev->id.vendor = SERIO_H3600; - input_dev->id.product = 0x0666; /* FIXME !!! We can ask the hardware */ - input_dev->id.version = 0x0100; - input_dev->dev.parent = &serio->dev; - - input_set_drvdata(input_dev, ts); - - input_dev->event = h3600ts_event; - - input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) | - BIT_MASK(EV_LED) | BIT_MASK(EV_PWR); - input_dev->ledbit[0] = BIT_MASK(LED_SLEEP); - input_set_abs_params(input_dev, ABS_X, 60, 985, 0, 0); - input_set_abs_params(input_dev, ABS_Y, 35, 1024, 0, 0); - - set_bit(KEY_RECORD, input_dev->keybit); - set_bit(KEY_Q, input_dev->keybit); - set_bit(KEY_PROG1, input_dev->keybit); - set_bit(KEY_PROG2, input_dev->keybit); - set_bit(KEY_PROG3, input_dev->keybit); - set_bit(KEY_UP, input_dev->keybit); - set_bit(KEY_RIGHT, input_dev->keybit); - set_bit(KEY_LEFT, input_dev->keybit); - set_bit(KEY_DOWN, input_dev->keybit); - set_bit(KEY_ENTER, input_dev->keybit); - set_bit(KEY_SUSPEND, input_dev->keybit); - set_bit(BTN_TOUCH, input_dev->keybit); - - /* Device specific stuff */ - set_GPIO_IRQ_edge(GPIO_BITSY_ACTION_BUTTON, GPIO_BOTH_EDGES); - set_GPIO_IRQ_edge(GPIO_BITSY_NPOWER_BUTTON, GPIO_RISING_EDGE); - - if (request_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, action_button_handler, - IRQF_SHARED, "h3600_action", ts->dev)) { - printk(KERN_ERR "h3600ts.c: Could not allocate Action Button IRQ!\n"); - err = -EBUSY; - goto fail1; - } - - if (request_irq(IRQ_GPIO_BITSY_NPOWER_BUTTON, npower_button_handler, - IRQF_SHARED, "h3600_suspend", ts->dev)) { - printk(KERN_ERR "h3600ts.c: Could not allocate Power Button IRQ!\n"); - err = -EBUSY; - goto fail2; - } - - serio_set_drvdata(serio, ts); - - err = serio_open(serio, drv); - if (err) - goto fail3; - - //h3600_flite_control(1, 25); /* default brightness */ - err = input_register_device(ts->dev); - if (err) - goto fail4; - - return 0; - -fail4: serio_close(serio); -fail3: serio_set_drvdata(serio, NULL); - free_irq(IRQ_GPIO_BITSY_NPOWER_BUTTON, ts->dev); -fail2: free_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, ts->dev); -fail1: input_free_device(input_dev); - kfree(ts); - return err; -} - -/* - * h3600ts_disconnect() is the opposite of h3600ts_connect() - */ - -static void h3600ts_disconnect(struct serio *serio) -{ - struct h3600_dev *ts = serio_get_drvdata(serio); - - free_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, ts->dev); - free_irq(IRQ_GPIO_BITSY_NPOWER_BUTTON, ts->dev); - input_get_device(ts->dev); - input_unregister_device(ts->dev); - serio_close(serio); - serio_set_drvdata(serio, NULL); - input_put_device(ts->dev); - kfree(ts); -} - -/* - * The serio driver structure. - */ - -static struct serio_device_id h3600ts_serio_ids[] = { - { - .type = SERIO_RS232, - .proto = SERIO_H3600, - .id = SERIO_ANY, - .extra = SERIO_ANY, - }, - { 0 } -}; - -MODULE_DEVICE_TABLE(serio, h3600ts_serio_ids); - -static struct serio_driver h3600ts_drv = { - .driver = { - .name = "h3600ts", - }, - .description = DRIVER_DESC, - .id_table = h3600ts_serio_ids, - .interrupt = h3600ts_interrupt, - .connect = h3600ts_connect, - .disconnect = h3600ts_disconnect, -}; - -module_serio_driver(h3600ts_drv); |