2 * MX1 touchscreen driver
5 * Radek Pupak (pupakr1@fel.cvut.cz)
6 * Czech Technical University, FEE, DCE
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * This code is heavily based on ucb*.c copyrighted by Russell King
13 * and Nicolas Pitre covering the UCB1100, UCB1200, UCB1300 and UCB1400.
15 * Hardware specific properties are based on mx1ts.h and mx1ts.c copyrated
16 * by Blue Mug, Inc. for Motorola, Inc.
21 #include <linux/module.h>
22 #include <linux/moduleparam.h>
23 #include <linux/init.h>
24 #include <linux/completion.h>
25 #include <linux/delay.h>
26 #include <linux/input.h>
27 #include <linux/device.h>
28 #include <linux/interrupt.h>
29 #include <linux/suspend.h>
30 #include <linux/slab.h>
31 #include <linux/kthread.h>
32 #include <linux/freezer.h>
35 #include <sound/driver.h>
36 #include <sound/core.h>
37 #include <sound/ac97_codec.h>
39 #include <linux/gameport.h> //bonus XXX
41 #include <linux/platform_device.h>
47 * linux/drivers/misc/mx1ts.h
49 * Copyright (C) 2003 Blue Mug, Inc. for Motorola, Inc.
51 * This program is free software; you can redistribute it and/or modify
52 * it under the terms of the GNU General Public License version 2 as
53 * published by the Free Software Foundation.
57 /* Interrupt numbers */
58 #define ASP_COMPARE_IRQ 5
59 #define ASP_PENDATA_IRQ 33
60 #define ASP_TOUCH_IRQ 46
62 /* Analog signal processor (ASP) control registers */
63 #define ASP_BASE_ADDR 0x00215000
65 #define ASP_ACNTLCR (0x10) /* Control register */
66 #define ASP_PSMPLRG (0x14) /* Pen A/D sampe rate control */
67 #define ASP_CMPCNTL (0x30) /* Compare control register */
68 #define ASP_ICNTLR (0x18) /* Interrupt control register */
69 #define ASP_ISTATR (0x1C) /* Interrupt status register */
70 #define ASP_PADFIFO (0x00) /* Pen sample FIFO */
71 #define ASP_CLKDIV (0x2C) /* Clock divide register */
73 /* ASP control register bits */
74 #define ASP_CLKEN (1 << 25) /* Clock enable */
75 #define ASP_SWRST (1 << 23) /* Software reset */
76 #define ASP_U_SEL (1 << 21) /* U-channel resistor select */
77 #define ASP_AZ_SEL (1 << 20) /* Auto-zero position select */
78 #define ASP_LVM (1 << 19) /* Low voltage output */
79 #define ASP_NM (1 << 18) /* Normal voltage output */
80 #define ASP_HPM (1 << 17) /* High voltage output */
81 #define ASP_GLO (1 << 16) /* Low gain enable */
82 #define ASP_AZE (1 << 15) /* Auto-zero enable */
83 #define ASP_AUTO (1 << 14) /* Auto sampling */
84 #define ASP_SW8 (1 << 11) /* Switch control 8 */
85 #define ASP_SW7 (1 << 10)
86 #define ASP_SW6 (1 << 9)
87 #define ASP_SW5 (1 << 8)
88 #define ASP_SW4 (1 << 7)
89 #define ASP_SW3 (1 << 6)
90 #define ASP_SW2 (1 << 5)
91 #define ASP_SW1 (1 << 4) /* Switch control 1 */
92 #define ASP_VDAE (1 << 3) /* Voice D/A enable */
93 #define ASP_VADE (1 << 2) /* Voice A/D enable */
94 #define ASP_PADE (1 << 1) /* Pen A/D enable */
95 #define ASP_BGE (1 << 0) /* Bandgap enable */
97 #define ASP_MODE_MASK 0x00003000
98 #define ASP_MODE_NONE 0x00000000
99 #define ASP_MODE_ONLY_X 0x00001000
100 #define ASP_MODE_ONLY_Y 0x00002000
101 #define ASP_MODE_ONLY_U 0x00003000
103 /* ASP Pen A/D sample rate control register */
104 #define ASP_DMCNT_MASK (0x00007000) /* Decimation ratio count */
105 #define ASP_DMCNT_SCALE (12)
106 #define ASP_BIT_SELECT_MASK (0x00000C00) /* Bit select */
107 #define ASP_BIT_SELECT_SCALE (10)
108 #define ASP_IDLECNT_MASK (0x000003F0) /* Idle count */
109 #define ASP_IDLECNT_SCALE (4)
110 #define ASP_DSCNT_MASK (0x0000000F) /* Data setup count */
111 #define ASP_DSCNT_SCALE (0)
113 /* ASP compare control register */
114 #define ASP_INT (1 << 19) /* Interrupt status */
115 #define ASP_CC (1 << 18) /* Trigger on greater than */
116 #define ASP_INSEL_MASK (0x00030000)
117 #define ASP_INSEL_DISABLE (0x00000000)
118 #define ASP_INSEL_X (0x00010000)
119 #define ASP_INSEL_Y (0x00020000)
120 #define ASP_INSEL_U (0x00030000)
121 #define ASP_COMPARE_VAL_MASK (0x0000FFFF)
122 #define ASP_COMPARE_VAL_SCALE (0)
124 /* ASP interrupt control register bits */
125 #define ASP_PUIE (1 << 10) /* Pen up XXX undocumented */
126 #define ASP_VDDMAE (1 << 8) /* VDAC FIFO empty DMA */
127 #define ASP_VADMAE (1 << 7) /* VADC FIFO full DMA */
128 #define ASP_POL (1 << 6) /* Pen interrupt polarity */
129 #define ASP_EDGE (1 << 5) /* Edge trigger enable */
130 #define ASP_PIRQE (1 << 4) /* Pen interrupt enable */
131 #define ASP_VDAFEE (1 << 3) /* VDAC FIFO empty interrupt */
132 #define ASP_VADFFE (1 << 2) /* VADC FIFO full interrupt */
133 #define ASP_PFFE (1 << 1) /* Pen FIFO full interrupt */
134 #define ASP_PDRE (1 << 0) /* Pen data ready interrupt */
136 /* ASP interrupt/error status register bits */
137 #define ASP_PUIS (1 << 10) /* Pen-up Status,event-> clear by 1 */
138 #define ASP_BGR (1 << 9) /* Bandgap ready */
139 #define ASP_VOV (1 << 8) /* Voice sample data overflow */
140 #define ASP_POV (1 << 7) /* Pen sample data overflow */
141 #define ASP_PEN (1 << 6) /* Pen interrupt */
142 #define ASP_VDAFF (1 << 5) /* VDAC FIFO full */
143 #define ASP_VDAFE (1 << 4) /* VDAC FIFO empty */
144 #define ASP_VADFF (1 << 3) /* VADC FIFO full */
145 #define ASP_VADDR (1 << 2) /* VADC data ready */
146 #define ASP_PFF (1 << 1) /* Pen sample FIFO full */
147 #define ASP_PDR (1 << 0) /* Pen data ready */
149 /* ASP Clock divide register */
150 #define ASP_PADC_CLK_MASK (0x0000001F)
151 #define ASP_PADC_CLK_SCALE (0)
152 #define ASP_VADC_CLK_MASK (0x000003E0)
153 #define ASP_VADC_CLK_SCALE (5)
154 #define ASP_VDAC_CLK_MASK (0x00003C00)
155 #define ASP_VDAC_CLK_SCALE (10)
157 #define DEV_IRQ_ID "mx1-ts"
160 struct input_dev *ts_idev;
161 struct resource pamet;
164 wait_queue_head_t ts_wait;
165 struct task_struct *ts_task;
167 unsigned int irq_pending;
168 unsigned int ts_restart:1;
169 unsigned int adcsync:1;
170 void __iomem* mx1ts_mem;
187 static inline void mx1ts_reg_set_mask(struct mx1ts *mts , unsigned int reg, u32 mask)
190 val = __raw_readl(mts->mx1ts_mem+reg);
192 __raw_writel(val, mts->mx1ts_mem+reg );
195 static inline void mx1ts_reg_clear_mask(struct mx1ts *mts , unsigned int reg, u32 mask)
198 val = __raw_readl(mts->mx1ts_mem+reg);
200 __raw_writel(val, mts->mx1ts_mem+reg );
203 static inline void mx1ts_reg_write(struct mx1ts *mts, unsigned int reg, unsigned int val)
205 __raw_writel(val, mts->mx1ts_mem+reg);
206 printk(KERN_DEBUG "mx1_touchscreen: writing into : %p value %x\n",mts->mx1ts_mem+reg, val);
210 static inline unsigned int mx1ts_reg_read(struct mx1ts *mts, unsigned int reg)
214 out = __raw_readl( mts->mx1ts_mem + reg );
215 /*printk(KERN_DEBUG "mx1_touchscreen: reading from %p : %d \n",mts->mx1ts_mem + reg, out);*/
220 static inline void mx1ts_flush_fifo(struct mx1ts *mts)
223 for (i = 0; i < 12; i++)
224 if (mx1ts_reg_read(mts, ASP_ISTATR) & (ASP_PFF | ASP_PDR))
225 mx1ts_reg_read(mts, ASP_PADFIFO);
228 static void mx1ts_enable_auto_sample(struct mx1ts *mts)
232 mx1ts_flush_fifo(mts);
234 value = mx1ts_reg_read(mts, ASP_ACNTLCR);
236 /* Set the mode to X then Y */
237 value &= ~ASP_MODE_MASK;
238 value |= ASP_MODE_ONLY_Y;
240 /* Enable auto zero. */
243 /* Enable auto sample. */
246 /* Enable pen A/D. */
248 mx1ts_reg_write(mts, ASP_ACNTLCR, value);
250 /* Enable pen data ready and full interrupt. */
251 value = mx1ts_reg_read(mts, ASP_ICNTLR);
252 value |= ASP_PFFE | ASP_PDRE;
253 mx1ts_reg_write(mts, ASP_ICNTLR, value);
257 static void mx1ts_disable_auto_sample(struct mx1ts *mts)
261 value = mx1ts_reg_read(mts, ASP_ACNTLCR);
263 /* Set the mode to none */
264 value &= ~ASP_MODE_MASK;
266 /* Disable auto zero. */
269 /* Disable auto sample. */
272 /* Disable pen A/D. */
274 mx1ts_reg_write(mts, ASP_ACNTLCR, value);
276 /* Disable pen data ready and full interrupt. */
277 value = mx1ts_reg_read(mts, ASP_ICNTLR);
278 value &= ~(ASP_PFFE | ASP_PDRE);
279 mx1ts_reg_write(mts, ASP_ICNTLR, value);
282 static void mx1ts_enable_pen_touch_interrupt(struct mx1ts *mts)
286 /* Enable pen touch interrupt. */
287 value = mx1ts_reg_read(mts, ASP_ICNTLR);
288 value |= ASP_EDGE | /*ASP_POL |*/ ASP_PIRQE;
289 mx1ts_reg_write(mts, ASP_ICNTLR, value);
291 printk(KERN_DEBUG "mx1_touchscreen: pen_touch: activating pen_down interrupt \n");
294 static void mx1ts_disable_pen_touch_interrupt(struct mx1ts *mts)
298 /* Enable pen touch interrupt. */
299 value = mx1ts_reg_read(mts, ASP_ICNTLR);
301 mx1ts_reg_write(mts, ASP_ICNTLR, value);
302 printk(KERN_DEBUG "mx1_touchscreen: pen_touch: deaktivating pen_down interrupt \n");
305 static void mx1ts_enable_pen_up_interrupt(struct mx1ts *mts)
309 value = mx1ts_reg_read(mts, ASP_ICNTLR);
311 mx1ts_reg_write(mts, ASP_ICNTLR, value);
312 printk(KERN_DEBUG "mx1_touchscreen: pen_up: activating pen_up interrupt \n");
315 static void mx1ts_disable_pen_up_interrupt(struct mx1ts *mts)
319 /* Enable pen up interrupt. */
320 value = mx1ts_reg_read(mts, ASP_ICNTLR);
322 mx1ts_reg_write(mts, ASP_ICNTLR, value);
323 printk(KERN_DEBUG "mx1_touchscreen: pen_up: deaktivating pen_up interrupt \n");
328 static void mx1ts_start_auto_calibration(struct mx1ts *mts)
331 printk(KERN_DEBUG "mx1_touchscreen: start_auto_calibration \n");
334 mts->auto_calibration = 1;
336 value = mx1ts_reg_read(mts, ASP_ACNTLCR);
338 /* Set the mode to X then Y */
339 value &= ~ASP_MODE_MASK;
340 value |= ASP_MODE_ONLY_X;
342 /* Enable auto zero. */
345 /* Enable auto calibrate. XXX: Undocumented bitfield. */
348 /* Enable auto sample. */
351 /* Enable pen A/D. */
353 mx1ts_reg_write(mts, ASP_ACNTLCR, value);
355 /* Enable pen data ready and full interrupt. */
356 value = mx1ts_reg_read(mts, ASP_ICNTLR);
357 value |= ASP_PFFE | ASP_PDRE | ASP_PUIE;
358 mx1ts_reg_write(mts, ASP_ICNTLR, value);
361 static void mx1ts_reset_asp(struct mx1ts *mts)
365 mx1ts_flush_fifo(mts);
367 /* Soft reset the ASP module */
368 mx1ts_reg_write(mts, ASP_ACNTLCR, ASP_SWRST);
369 /* Read back the reset value of the control register */
370 value = mx1ts_reg_read(mts, ASP_ACNTLCR);
372 /* Enable the clock and wait for a short while */
374 mx1ts_reg_write(mts, ASP_ACNTLCR, value);
377 /* Set the value of the conrtol register. */
378 value = ASP_CLKEN | ASP_NM | ASP_SW6 | ASP_BGE;
379 mx1ts_reg_write(mts, ASP_ACNTLCR, value);
381 /* 0x01 Set the clock divide ratio to 2. */
382 mx1ts_reg_write(mts, ASP_CLKDIV, 0x1f);
384 /* Set the sample rate control register. These values should yield
385 * about 150 samples per second, which seems to give good smooth
387 value = (0x7 << ASP_DMCNT_SCALE) | /* 0x2 - Decimation ratio is 3 */
388 (0x3F << ASP_IDLECNT_SCALE) | /* 0x1 - Idle count is 1 clock */
389 (0xF << ASP_DSCNT_SCALE); /* 0x2 - Data setup is 2 clocks */
390 mx1ts_reg_write(mts, ASP_PSMPLRG, value);
392 /* Disable the compare function. */
393 mx1ts_reg_write(mts, ASP_CMPCNTL, 0);
396 static void mx1ts_evt_add_touch(struct input_dev *idev, u8 p , u16 x, u16 y)
398 struct mx1ts *mts = dev_get_drvdata(idev->dev.parent);
402 input_report_key(idev, BTN_TOUCH, 1);
403 input_report_abs(idev, ABS_X, x);
404 input_report_abs(idev, ABS_Y, y);
405 /*input_report_abs(idev, ABS_PRESSURE, p);*/
406 input_report_abs(idev, ABS_PRESSURE, 1);
410 static void mx1ts_evt_add_up(struct input_dev *idev)
412 struct mx1ts *mts = dev_get_drvdata(idev->dev.parent);
414 input_report_abs(idev, ABS_X, mts->x_akt);
415 input_report_abs(idev, ABS_Y, mts->y_akt);
416 input_report_abs(idev, ABS_PRESSURE, 0);
417 /*input_report_key(idev, BTN_TOUCH, 0);*/
422 * Handle the pen data ready interrupt, generated when pen data is
426 static irqreturn_t mx1ts_pendata_irq(int irq, void *dev_id)
429 struct mx1ts *mts = (struct mx1ts *)dev_id;
432 static unsigned int auto_zero, pen_x, pen_y, pen_u;
437 /*printk(KERN_DEBUG "mx1_touchscreen mx1ts_pendata_irq \n");*/
438 /* printk(KERN_DEBUG "mx1_touchscreen: mx1_pendata_irq interrupt recived from struct %p\n", mts);*/
440 if (mx1ts_reg_read(mts, ASP_ISTATR) & ASP_PUIS) { /*pen up interupt pending*/
441 mx1ts_reg_set_mask(mts, ASP_ISTATR, ASP_PUIS); /*clearing pen up interupt*/
443 mx1ts_disable_auto_sample(mts);
444 mx1ts_disable_pen_up_interrupt(mts);
445 mx1ts_enable_pen_touch_interrupt(mts);
447 if(mts->is_open) /*report last known touch*/
448 mx1ts_evt_add_up(mts->ts_idev);
449 printk(KERN_DEBUG "Pen up interrupt.\n");
450 mx1ts_flush_fifo(mts);
455 if (mts->auto_calibration) {
456 /* unsigned int value;*/
458 mts->cal_auto_zero = mx1ts_reg_read(mts, ASP_PADFIFO) & 0xFFFF;
459 mts->cal_range_x = mx1ts_reg_read(mts, ASP_PADFIFO) & 0xFFFF;
460 mts->cal_range_y = mx1ts_reg_read(mts, ASP_PADFIFO) & 0xFFFF;
462 if ((mts->cal_auto_zero >= mts->cal_range_x) ||
463 (mts->cal_auto_zero >= mts->cal_range_y)) {
465 printk(KERN_INFO "Invalid calibration data. Recalibrating. \n");
466 mx1ts_flush_fifo(mts); /*if there are some older data*/
467 mx1ts_start_auto_calibration(mts);
468 return IRQ_HANDLED; /*return IRQ_NONE;*/
471 printk(KERN_DEBUG "mx1 touchscreen: calibration cal_auto_zero %i.\n",mts->cal_auto_zero);
472 printk(KERN_DEBUG "mx1 touchscreen: calibration cal_range_x %i.\n",mts->cal_range_x);
473 printk(KERN_DEBUG "mx1 touchscreen: calibration cal_range_y %i.\n",mts->cal_range_y);
475 mts->cal_range_x -= mts->cal_auto_zero;
476 mts->cal_range_y -= mts->cal_auto_zero;
480 value = mx1ts_reg_read(mts, ASP_ACNTLCR); podle me duplicita
481 value &= ~0x04000000;
482 mx1ts_reg_write(mts, ASP_ACNTLCR, value);
484 mts->auto_calibration = 0;
486 mx1ts_enable_auto_sample(mts);
488 // There could be more than one sample in the FIFO, but we're
489 // only going to read one per call. The interrupt will be
490 // generated as long as there is data in the FIFO.
492 if ((mx1ts_reg_read(mts, ASP_ISTATR) & ASP_PDR) != ASP_PDR) {
496 auto_zero = mx1ts_reg_read(mts, ASP_PADFIFO);
497 if (auto_zero > (mts->cal_auto_zero + 0x200)) {
498 return IRQ_HANDLED; /* TODO asi se nic nedeje */
501 pen_x = mx1ts_reg_read(mts, ASP_PADFIFO);
502 pen_y = mx1ts_reg_read(mts, ASP_PADFIFO);
503 pen_u = mx1ts_reg_read(mts, ASP_PADFIFO);
505 pen_x = (u32)(((pen_x - auto_zero) << 16) /
507 pen_y = (u32)(((pen_y - auto_zero) << 16) /
511 mx1ts_evt_add_touch(mts->ts_idev, 200 , pen_x, pen_y);
517 * Handle the touch interrupt, generated when the pen is pressed/
521 static irqreturn_t mx1ts_touch_irq(int irq, void *dev_id)
523 struct mx1ts *mts = (struct mx1ts *) dev_id;
525 printk(KERN_DEBUG "mx1 touchscreen: Touch down interrupt \n");
527 /* Clear the interrupt. */
528 mx1ts_reg_set_mask(mts, ASP_ISTATR, ASP_PEN);
530 mx1ts_disable_pen_touch_interrupt(mts);
531 mx1ts_flush_fifo(mts);
532 mx1ts_start_auto_calibration(mts);
533 mx1ts_enable_pen_up_interrupt(mts);
538 static inline int mx1ts_enable_irqs(struct mx1ts *mts) //zaregistruje preruseni
541 //TODO printk(KERN_ERR "enabling irq %d.\n",mts->ts_idev->dev.parent.resource[1]->start);
542 result = request_irq(ASP_PENDATA_IRQ,
548 printk(KERN_ERR "mx1 touchscreen: Couldn't request pen data IRQ.\n");
552 result = request_irq(ASP_TOUCH_IRQ,
558 printk(KERN_ERR "mx1 touchscreen: Couldn't request pen touch IRQ.\n");
559 free_irq(ASP_PENDATA_IRQ, mts);
567 static int mx1ts_on(struct mx1ts *mts) /*TODO doplnit pri chybach*/
571 if(!request_mem_region(ASP_BASE_ADDR, 0x38 , "mx1ts")) {
572 printk(KERN_ERR "mx1 touchscreen: request_mem_region \tFAILED\n");
576 printk(KERN_DEBUG "mx1 touchscreen: request_mem_region \tOK\n");
578 mts->mx1ts_mem = ioremap ( ASP_BASE_ADDR, 0x38);
580 if(!mts->mx1ts_mem) {
581 printk(KERN_ERR "mx1 touchscreen: ioremap \tFAILED\n");
585 printk(KERN_DEBUG "mx1 touchscreen: memory remaped on %p \n", mts->mx1ts_mem);
589 /*printk(KERN_DEBUG "mx1 touchscreen: enabling irqs\n");*/
590 if ((ret = mx1ts_enable_irqs(mts)))
592 printk(KERN_DEBUG "mx1 touchscreen: irqs enabled \tOK\n");
595 mx1ts_reset_asp(mts);
596 printk(KERN_DEBUG "mx1 touchscreen: reset\tOK\n");
601 static void mx1ts_close(struct input_dev *idev)
603 struct mx1ts *mts = dev_get_drvdata(idev->dev.parent);
605 mx1ts_flush_fifo(mts);
606 mx1ts_reset_asp(mts);
607 printk(KERN_DEBUG "mx1 touchscreen: reset\tOK\n");
608 mx1ts_disable_pen_touch_interrupt(mts);
609 mx1ts_disable_pen_up_interrupt(mts);
613 static int mx1ts_open(struct input_dev *idev)
615 struct mx1ts *mts = dev_get_drvdata(idev->dev.parent);
617 mx1ts_flush_fifo(mts); /*if there are some older data*/
618 mx1ts_enable_pen_touch_interrupt(mts);
619 printk(KERN_DEBUG "mx1 touchscreen: touch_down interupt enabled\n");
623 static int mx1ts_probe(struct platform_device *dev)
626 struct input_dev *idev;
627 int error, x_res, y_res;
629 /* TODO jak poznat ze zarizeni je pritomne ? */
631 mts = kzalloc(sizeof(struct mx1ts), GFP_KERNEL); /* alokuje pamet */
632 idev = input_allocate_device();
635 printk(KERN_ERR "mx1 touchscreen: failed allocate memory for struct mx1ts or idev\n");
640 mx1ts_on(mts); /* remaping registers, reseting device */
643 init_waitqueue_head(&mts->ts_wait);
645 //input_set_drvdata(idev, mts); /*moznost ulozit ukazatel na trukturu do input_driver*/
646 platform_set_drvdata(dev, mts);
648 idev->dev.parent = &dev->dev;
649 idev->name = "MX1 touchscreen interface";
650 idev->phys = "mx1ts/input0"; //dodano
651 idev->id.vendor = (unsigned int) 345; /*mx1ts_reg_read(mx1_ts, AC97_VENDOR_ID1);*/
652 idev->id.product = (unsigned int) 354; /*id;*/
653 idev->id.version = 0x0100; //dodano
654 idev->id.bustype = BUS_HOST;
655 idev->open = mx1ts_open;
656 idev->close = mx1ts_close;
657 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
658 idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
660 printk(KERN_DEBUG "mx1ts: setting idev struct \tOK\n");
662 x_res = 60000; /*TODO neni mozne zmerit ? */
664 printk(KERN_DEBUG "mx1ts: x/y = %d/%d\n", x_res, y_res);
666 input_set_abs_params(idev, ABS_X, 0, x_res, 0, 0);
667 input_set_abs_params(idev, ABS_Y, 0, y_res, 0, 0);
668 input_set_abs_params(idev, ABS_PRESSURE, 0, 1, 0, 0);
670 error = input_register_device(idev);
672 printk(KERN_ERR "mx1 touchscreen: error while register input device\n");
676 printk(KERN_DEBUG "mx1ts: input device registered \tOK\n");
681 printk(KERN_ERR "mx1 touchscreen: error in device probe \n");
682 /*input_free_device(idev);*/
690 static int mx1ts_remove(struct platform_device *dev)
692 struct mx1ts *mts = platform_get_drvdata(dev);
694 //BUG_ON(mts == NULL);
696 free_irq(ASP_PENDATA_IRQ, mts);
697 free_irq(ASP_TOUCH_IRQ, mts);
699 /*input_free_device(mts->ts_idev);
700 printk(KERN_DEBUG "Free device \tOK\n");*/
702 input_unregister_device(mts->ts_idev);
703 printk(KERN_INFO "mx1 touchscreen: Unregister device \tOK\n");
704 iounmap(mts->mx1ts_mem);
705 release_mem_region(ASP_BASE_ADDR, 0x38);
709 printk(KERN_INFO "mx1 touchscreen: Removing driver \tOK\n");
715 static int mx1ts_resume(struct platform_device *dev)
720 /* inicializace ovladace a driveru (insmod, rmmmod ) */
722 static struct platform_driver mx1ts_driver = {
723 .probe = mx1ts_probe,
724 .remove = mx1ts_remove,
725 .resume = mx1ts_resume,
728 .owner = THIS_MODULE,
732 static struct resource mx1ts_resources[] = {
734 .start = ASP_BASE_ADDR + 0,
735 .end = ASP_BASE_ADDR + 0x37,
736 .flags = IORESOURCE_MEM,
739 .start = ASP_PENDATA_IRQ,
740 .end = ASP_PENDATA_IRQ,
741 .flags = IORESOURCE_IRQ,
744 .start = ASP_TOUCH_IRQ,
745 .end = ASP_TOUCH_IRQ,
746 .flags = IORESOURCE_IRQ,
750 void mx1ts_device_release(struct device *dev) {
751 /*struct platform_device *pdev = to_platform_device(dev);
752 release_resource(&dev->res);
757 static struct platform_device mx1ts_device = {
760 .num_resources = ARRAY_SIZE(mx1ts_resources),
761 .resource = mx1ts_resources,
763 .release = mx1ts_device_release,
770 static int __init mx1ts_init(void)
774 error = platform_device_register(&mx1ts_device);
776 printk(KERN_ERR "mx1 touchscreen: device registration failed\n");
781 error = platform_driver_register(&mx1ts_driver);
783 printk(KERN_ERR "mx1_touchscreen: failed to register touchscreen driver, error: %d\n", error);
784 platform_device_unregister(&mx1ts_device);
793 static void __exit mx1ts_exit(void)
795 platform_driver_unregister(&mx1ts_driver);
796 platform_device_unregister(&mx1ts_device);
801 //module_param(adcsync, bool, 0444);
802 //MODULE_PARM_DESC(adcsync, "Synchronize touch readings with ADCSYNC pin.");
804 //module_param(ts_delay, int, 0444);
805 //MODULE_PARM_DESC(ts_delay, "Delay between panel setup and position read. Default = 55us.");
807 //module_param(ts_delay_pressure, int, 0444);
808 //MODULE_PARM_DESC(ts_delay_pressure,
809 // "delay between panel setup and pressure read. Default = 0us.");
811 module_init(mx1ts_init);
812 module_exit(mx1ts_exit);
815 MODULE_DESCRIPTION("MX1 touchscreen driver");
816 MODULE_AUTHOR("Radek Pupák (pupakr1@fel.cvut.cz)");
817 MODULE_LICENSE("GPL");