From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/input/touchscreen/h3600_ts_input.c | 528 +++++++++++++++++++++++++++++ 1 file changed, 528 insertions(+) create mode 100644 drivers/input/touchscreen/h3600_ts_input.c (limited to 'drivers/input/touchscreen/h3600_ts_input.c') diff --git a/drivers/input/touchscreen/h3600_ts_input.c b/drivers/input/touchscreen/h3600_ts_input.c new file mode 100644 index 000000000000..acb9137a0226 --- /dev/null +++ b/drivers/input/touchscreen/h3600_ts_input.c @@ -0,0 +1,528 @@ +/* + * $Id: h3600_ts_input.c,v 1.4 2002/01/23 06:39:37 jsimmons Exp $ + * + * 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 . + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* SA1100 serial defines */ +#include +#include + +#define DRIVER_DESC "H3600 touchscreen driver" + +MODULE_AUTHOR("James Simmons "); +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/respose) */ +#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 */ + +static char *h3600_name = "H3600 TouchScreen"; + +/* + * Per-touchscreen data. + */ +struct h3600_dev { + struct input_dev dev; + struct pm_dev *pm_dev; + struct serio *serio; + struct pm_dev *pm_dev; + 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, struct pt_regs *regs) +{ + int down = (GPLR & GPIO_BITSY_ACTION_BUTTON) ? 0 : 1; + struct input_dev *dev = (struct input_dev *) dev_id; + + input_regs(dev, regs); + input_report_key(dev, KEY_ENTER, down); + input_sync(dev); + + return IRQ_HANDLED; +} + +static irqreturn_t npower_button_handler(int irq, void *dev_id, struct pt_regs *regs) +{ + int down = (GPLR & GPIO_BITSY_NPOWER_BUTTON) ? 0 : 1; + struct input_dev *dev = (struct input_dev *) dev_id; + + /* + * This interrupt is only called when we release the key. So we have + * to fake a key press. + */ + input_regs(dev, regs); + 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 = dev->private; + + /* Must be in this order */ + ts->serio->write(ts->serio, 1); + ts->serio->write(ts->serio, pwr); + ts->serio->write(ts->serio, brightness); + return 0; +} + +static int suspended = 0; +static int h3600ts_pm_callback(struct pm_dev *pm_dev, pm_request_t req, + void *data) +{ + struct input_dev *dev = (struct input_dev *) data; + + switch (req) { + case PM_SUSPEND: /* enter D1-D3 */ + suspended = 1; + h3600_flite_power(dev, FLITE_PWR_OFF); + break; + case PM_BLANK: + if (!suspended) + h3600_flite_power(dev, FLITE_PWR_OFF); + break; + case PM_RESUME: /* enter D0 */ + /* same as unblank */ + case PM_UNBLANK: + if (suspended) { + //initSerial(); + suspended = 0; + } + h3600_flite_power(dev, FLITE_PWR_ON); + break; + } + 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 pt_regs *regs) +{ + struct input_dev *dev = &ts->dev; + static int touched = 0; + int key, down = 0; + + input_regs(dev, regs); + + 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) +{ + struct h3600_dev *ts = dev->private; + + switch (type) { + case EV_LED: { + // ts->serio->write(ts->serio, SOME_CMD); + return 0; + } + } + return -1; +} + +/* + 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 pt_regs *regs) +{ + 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, regs); + 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; + int err; + + if (!(ts = kmalloc(sizeof(struct h3600_dev), GFP_KERNEL))) + return -ENOMEM; + + memset(ts, 0, sizeof(struct h3600_dev)); + + init_input_dev(&ts->dev); + + /* 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, + SA_SHIRQ | SA_INTERRUPT | SA_SAMPLE_RANDOM, + "h3600_action", &ts->dev)) { + printk(KERN_ERR "h3600ts.c: Could not allocate Action Button IRQ!\n"); + kfree(ts); + return -EBUSY; + } + + if (request_irq(IRQ_GPIO_BITSY_NPOWER_BUTTON, npower_button_handler, + SA_SHIRQ | SA_INTERRUPT | SA_SAMPLE_RANDOM, + "h3600_suspend", &ts->dev)) { + free_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, &ts->dev); + printk(KERN_ERR "h3600ts.c: Could not allocate Power Button IRQ!\n"); + kfree(ts); + return -EBUSY; + } + + /* Now we have things going we setup our input device */ + ts->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_LED) | BIT(EV_PWR); + ts->dev.ledbit[0] = BIT(LED_SLEEP); + input_set_abs_params(&ts->dev, ABS_X, 60, 985, 0, 0); + input_set_abs_params(&ts->dev, ABS_Y, 35, 1024, 0, 0); + + set_bit(KEY_RECORD, ts->dev.keybit); + set_bit(KEY_Q, ts->dev.keybit); + set_bit(KEY_PROG1, ts->dev.keybit); + set_bit(KEY_PROG2, ts->dev.keybit); + set_bit(KEY_PROG3, ts->dev.keybit); + set_bit(KEY_UP, ts->dev.keybit); + set_bit(KEY_RIGHT, ts->dev.keybit); + set_bit(KEY_LEFT, ts->dev.keybit); + set_bit(KEY_DOWN, ts->dev.keybit); + set_bit(KEY_ENTER, ts->dev.keybit); + ts->dev.keybit[LONG(BTN_TOUCH)] |= BIT(BTN_TOUCH); + ts->dev.keybit[LONG(KEY_SUSPEND)] |= BIT(KEY_SUSPEND); + + ts->serio = serio; + + sprintf(ts->phys, "%s/input0", serio->phys); + + ts->dev.event = h3600ts_event; + ts->dev.private = ts; + ts->dev.name = h3600_name; + ts->dev.phys = ts->phys; + ts->dev.id.bustype = BUS_RS232; + ts->dev.id.vendor = SERIO_H3600; + ts->dev.id.product = 0x0666; /* FIXME !!! We can ask the hardware */ + ts->dev.id.version = 0x0100; + + serio_set_drvdata(serio, ts); + + err = serio_open(serio, drv); + if (err) { + free_irq(IRQ_GPIO_BITSY_ACTION_BUTTON, ts); + free_irq(IRQ_GPIO_BITSY_NPOWER_BUTTON, ts); + serio_set_drvdata(serio, NULL); + kfree(ts); + return err; + } + + //h3600_flite_control(1, 25); /* default brightness */ +#ifdef CONFIG_PM + ts->pm_dev = pm_register(PM_ILLUMINATION_DEV, PM_SYS_LIGHT, + h3600ts_pm_callback); + printk("registered pm callback\n"); +#endif + input_register_device(&ts->dev); + + printk(KERN_INFO "input: %s on %s\n", h3600_name, serio->phys); + + return 0; +} + +/* + * 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_unregister_device(&ts->dev); + serio_close(serio); + serio_set_drvdata(serio, NULL); + 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, +}; + +/* + * The functions for inserting/removing us as a module. + */ + +static int __init h3600ts_init(void) +{ + serio_register_driver(&h3600ts_drv); + return 0; +} + +static void __exit h3600ts_exit(void) +{ + serio_unregister_driver(&h3600ts_drv); +} + +module_init(h3600ts_init); +module_exit(h3600ts_exit); -- cgit v1.2.3-55-g7522