+++ /dev/null
-/*
- * 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);
projects / firefly-linux-kernel-4.4.55.git / commitdiff