diff options
Diffstat (limited to 'drivers/input/touchscreen')
| -rw-r--r-- | drivers/input/touchscreen/Kconfig | 37 | ||||
| -rw-r--r-- | drivers/input/touchscreen/Makefile | 4 | ||||
| -rw-r--r-- | drivers/input/touchscreen/ads7846.c | 25 | ||||
| -rw-r--r-- | drivers/input/touchscreen/atmel_tsadcc.c | 47 | ||||
| -rw-r--r-- | drivers/input/touchscreen/dynapro.c | 206 | ||||
| -rw-r--r-- | drivers/input/touchscreen/s3c2410_ts.c | 457 | ||||
| -rw-r--r-- | drivers/input/touchscreen/ucb1400_ts.c | 11 | ||||
| -rw-r--r-- | drivers/input/touchscreen/usbtouchscreen.c | 104 |
8 files changed, 855 insertions, 36 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 8cc453c85ea..32fc8ba039a 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -111,6 +111,18 @@ config TOUCHSCREEN_DA9034 Say Y here to enable the support for the touchscreen found on Dialog Semiconductor DA9034 PMIC. +config TOUCHSCREEN_DYNAPRO + tristate "Dynapro serial touchscreen" + select SERIO + help + Say Y here if you have a Dynapro serial touchscreen connected to + your system. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called dynapro. + config TOUCHSCREEN_EETI tristate "EETI touchscreen panel support" depends on I2C @@ -133,6 +145,18 @@ config TOUCHSCREEN_FUJITSU To compile this driver as a module, choose M here: the module will be called fujitsu-ts. +config TOUCHSCREEN_S3C2410 + tristate "Samsung S3C2410 touchscreen input driver" + depends on ARCH_S3C2410 + select S3C24XX_ADC + help + Say Y here if you have the s3c2410 touchscreen. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called s3c2410_ts. + config TOUCHSCREEN_GUNZE tristate "Gunze AHL-51S touchscreen" select SERIO @@ -297,7 +321,7 @@ config TOUCHSCREEN_TOUCHWIN config TOUCHSCREEN_ATMEL_TSADCC tristate "Atmel Touchscreen Interface" - depends on ARCH_AT91SAM9RL + depends on ARCH_AT91SAM9RL || ARCH_AT91SAM9G45 help Say Y here if you have a 4-wire touchscreen connected to the ADC Controller on your Atmel SoC (such as the AT91SAM9RL). @@ -418,6 +442,7 @@ config TOUCHSCREEN_USB_COMPOSITE - IdealTEK URTC1000 - GoTop Super_Q2/GogoPen/PenPower tablets - JASTEC USB Touch Controller/DigiTech DTR-02U + - Zytronic controllers Have a look at <http://linux.chapter7.ch/touchkit/> for a usage description and the required user-space stuff. @@ -490,6 +515,16 @@ config TOUCHSCREEN_USB_E2I bool "e2i Touchscreen controller (e.g. from Mimo 740)" depends on TOUCHSCREEN_USB_COMPOSITE +config TOUCHSCREEN_USB_ZYTRONIC + default y + bool "Zytronic controller" if EMBEDDED + depends on TOUCHSCREEN_USB_COMPOSITE + +config TOUCHSCREEN_USB_ETT_TC5UH + default y + bool "ET&T TC5UH touchscreen controler support" if EMBEDDED + depends on TOUCHSCREEN_USB_COMPOSITE + config TOUCHSCREEN_TOUCHIT213 tristate "Sahara TouchIT-213 touchscreen" select SERIO diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 15fa62cffc7..f1f59c9e121 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_TOUCHSCREEN_ADS7846) += ads7846.o obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC) += atmel_tsadcc.o obj-$(CONFIG_TOUCHSCREEN_BITSY) += h3600_ts_input.o obj-$(CONFIG_TOUCHSCREEN_CORGI) += corgi_ts.o +obj-$(CONFIG_TOUCHSCREEN_DYNAPRO) += dynapro.o obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o obj-$(CONFIG_TOUCHSCREEN_EETI) += eeti_ts.o obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o @@ -25,7 +26,9 @@ obj-$(CONFIG_TOUCHSCREEN_HP600) += hp680_ts_input.o obj-$(CONFIG_TOUCHSCREEN_HP7XX) += jornada720_ts.o obj-$(CONFIG_TOUCHSCREEN_HTCPEN) += htcpen.o obj-$(CONFIG_TOUCHSCREEN_USB_COMPOSITE) += usbtouchscreen.o +obj-$(CONFIG_TOUCHSCREEN_PCAP) += pcap_ts.o obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o +obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o @@ -41,4 +44,3 @@ obj-$(CONFIG_TOUCHSCREEN_WM97XX_ATMEL) += atmel-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE) += mainstone-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE) += zylonite-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_W90X900) += w90p910_ts.o -obj-$(CONFIG_TOUCHSCREEN_PCAP) += pcap_ts.o diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index 09c810999b9..52d2ca147d8 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -29,10 +29,9 @@ #include <linux/spi/ads7846.h> #include <asm/irq.h> - /* * This code has been heavily tested on a Nokia 770, and lightly - * tested on other ads7846 devices (OSK/Mistral, Lubbock). + * tested on other ads7846 devices (OSK/Mistral, Lubbock, Spitz). * TSC2046 is just newer ads7846 silicon. * Support for ads7843 tested on Atmel at91sam926x-EK. * Support for ads7845 has only been stubbed in. @@ -43,7 +42,7 @@ * have to maintain our own SW IRQ disabled status. This should be * removed as soon as the affected platform's IRQ handling is fixed. * - * app note sbaa036 talks in more detail about accurate sampling... + * App note sbaa036 talks in more detail about accurate sampling... * that ought to help in situations like LCDs inducing noise (which * can also be helped by using synch signals) and more generally. * This driver tries to utilize the measures described in the app @@ -566,10 +565,8 @@ static void ads7846_rx(void *ads) * once more the measurement */ if (packet->tc.ignore || Rt > ts->pressure_max) { -#ifdef VERBOSE - pr_debug("%s: ignored %d pressure %d\n", - dev_name(&ts->spi->dev), packet->tc.ignore, Rt); -#endif + dev_vdbg(&ts->spi->dev, "ignored %d pressure %d\n", + packet->tc.ignore, Rt); hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_PERIOD), HRTIMER_MODE_REL); return; @@ -598,9 +595,7 @@ static void ads7846_rx(void *ads) if (!ts->pendown) { input_report_key(input, BTN_TOUCH, 1); ts->pendown = 1; -#ifdef VERBOSE - dev_dbg(&ts->spi->dev, "DOWN\n"); -#endif + dev_vdbg(&ts->spi->dev, "DOWN\n"); } if (ts->swap_xy) @@ -608,12 +603,10 @@ static void ads7846_rx(void *ads) input_report_abs(input, ABS_X, x); input_report_abs(input, ABS_Y, y); - input_report_abs(input, ABS_PRESSURE, Rt); + input_report_abs(input, ABS_PRESSURE, ts->pressure_max - Rt); input_sync(input); -#ifdef VERBOSE - dev_dbg(&ts->spi->dev, "%4d/%4d/%4d\n", x, y, Rt); -#endif + dev_vdbg(&ts->spi->dev, "%4d/%4d/%4d\n", x, y, Rt); } hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_PERIOD), @@ -723,9 +716,7 @@ static enum hrtimer_restart ads7846_timer(struct hrtimer *handle) input_sync(input); ts->pendown = 0; -#ifdef VERBOSE - dev_dbg(&ts->spi->dev, "UP\n"); -#endif + dev_vdbg(&ts->spi->dev, "UP\n"); } /* measurement cycle ended */ diff --git a/drivers/input/touchscreen/atmel_tsadcc.c b/drivers/input/touchscreen/atmel_tsadcc.c index 9c7fce4d74d..3d9b5166ebe 100644 --- a/drivers/input/touchscreen/atmel_tsadcc.c +++ b/drivers/input/touchscreen/atmel_tsadcc.c @@ -22,6 +22,8 @@ #include <linux/clk.h> #include <linux/platform_device.h> #include <linux/io.h> +#include <mach/board.h> +#include <mach/cpu.h> /* Register definitions based on AT91SAM9RL64 preliminary draft datasheet */ @@ -36,7 +38,9 @@ #define ATMEL_TSADCC_LOWRES (1 << 4) /* Resolution selection */ #define ATMEL_TSADCC_SLEEP (1 << 5) /* Sleep mode */ #define ATMEL_TSADCC_PENDET (1 << 6) /* Pen Detect selection */ +#define ATMEL_TSADCC_PRES (1 << 7) /* Pressure Measurement Selection */ #define ATMEL_TSADCC_PRESCAL (0x3f << 8) /* Prescalar Rate Selection */ +#define ATMEL_TSADCC_EPRESCAL (0xff << 8) /* Prescalar Rate Selection (Extended) */ #define ATMEL_TSADCC_STARTUP (0x7f << 16) /* Start Up time */ #define ATMEL_TSADCC_SHTIM (0xf << 24) /* Sample & Hold time */ #define ATMEL_TSADCC_PENDBC (0xf << 28) /* Pen Detect debouncing time */ @@ -84,7 +88,13 @@ #define ATMEL_TSADCC_CDR4 0x40 /* Channel Data 4 */ #define ATMEL_TSADCC_CDR5 0x44 /* Channel Data 5 */ -#define ADC_CLOCK 1000000 +#define ATMEL_TSADCC_XPOS 0x50 +#define ATMEL_TSADCC_Z1DAT 0x54 +#define ATMEL_TSADCC_Z2DAT 0x58 + +#define PRESCALER_VAL(x) ((x) >> 8) + +#define ADC_DEFAULT_CLOCK 100000 struct atmel_tsadcc { struct input_dev *input; @@ -172,6 +182,7 @@ static int __devinit atmel_tsadcc_probe(struct platform_device *pdev) struct atmel_tsadcc *ts_dev; struct input_dev *input_dev; struct resource *res; + struct at91_tsadcc_data *pdata = pdev->dev.platform_data; int err = 0; unsigned int prsc; unsigned int reg; @@ -242,31 +253,49 @@ static int __devinit atmel_tsadcc_probe(struct platform_device *pdev) input_dev->phys = ts_dev->phys; input_dev->dev.parent = &pdev->dev; - input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); - input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); - + __set_bit(EV_ABS, input_dev->evbit); input_set_abs_params(input_dev, ABS_X, 0, 0x3FF, 0, 0); input_set_abs_params(input_dev, ABS_Y, 0, 0x3FF, 0, 0); + input_set_capability(input_dev, EV_KEY, BTN_TOUCH); + /* clk_enable() always returns 0, no need to check it */ clk_enable(ts_dev->clk); prsc = clk_get_rate(ts_dev->clk); dev_info(&pdev->dev, "Master clock is set at: %d Hz\n", prsc); - prsc = prsc / ADC_CLOCK / 2 - 1; + if (!pdata) + goto err_fail; + + if (!pdata->adc_clock) + pdata->adc_clock = ADC_DEFAULT_CLOCK; + + prsc = (prsc / (2 * pdata->adc_clock)) - 1; + + /* saturate if this value is too high */ + if (cpu_is_at91sam9rl()) { + if (prsc > PRESCALER_VAL(ATMEL_TSADCC_PRESCAL)) + prsc = PRESCALER_VAL(ATMEL_TSADCC_PRESCAL); + } else { + if (prsc > PRESCALER_VAL(ATMEL_TSADCC_EPRESCAL)) + prsc = PRESCALER_VAL(ATMEL_TSADCC_EPRESCAL); + } + + dev_info(&pdev->dev, "Prescaler is set at: %d\n", prsc); reg = ATMEL_TSADCC_TSAMOD_TS_ONLY_MODE | ((0x00 << 5) & ATMEL_TSADCC_SLEEP) | /* Normal Mode */ ((0x01 << 6) & ATMEL_TSADCC_PENDET) | /* Enable Pen Detect */ - ((prsc << 8) & ATMEL_TSADCC_PRESCAL) | /* PRESCAL */ - ((0x13 << 16) & ATMEL_TSADCC_STARTUP) | /* STARTUP */ - ((0x0F << 28) & ATMEL_TSADCC_PENDBC); /* PENDBC */ + (prsc << 8) | + ((0x26 << 16) & ATMEL_TSADCC_STARTUP) | + ((pdata->pendet_debounce << 28) & ATMEL_TSADCC_PENDBC); atmel_tsadcc_write(ATMEL_TSADCC_CR, ATMEL_TSADCC_SWRST); atmel_tsadcc_write(ATMEL_TSADCC_MR, reg); atmel_tsadcc_write(ATMEL_TSADCC_TRGR, ATMEL_TSADCC_TRGMOD_NONE); - atmel_tsadcc_write(ATMEL_TSADCC_TSR, (0x3 << 24) & ATMEL_TSADCC_TSSHTIM); + atmel_tsadcc_write(ATMEL_TSADCC_TSR, + (pdata->ts_sample_hold_time << 24) & ATMEL_TSADCC_TSSHTIM); atmel_tsadcc_read(ATMEL_TSADCC_SR); atmel_tsadcc_write(ATMEL_TSADCC_IER, ATMEL_TSADCC_PENCNT); diff --git a/drivers/input/touchscreen/dynapro.c b/drivers/input/touchscreen/dynapro.c new file mode 100644 index 00000000000..455353908bd --- /dev/null +++ b/drivers/input/touchscreen/dynapro.c @@ -0,0 +1,206 @@ +/* + * Dynapro serial touchscreen driver + * + * Copyright (c) 2009 Tias Guns + * Based on the inexio driver (c) Vojtech Pavlik and Dan Streetman and + * Richard Lemon + * + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +/* + * 2009/09/19 Tias Guns <tias@ulyssis.org> + * Copied inexio.c and edited for Dynapro protocol (from retired Xorg module) + */ + +#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> + +#define DRIVER_DESC "Dynapro serial touchscreen driver" + +MODULE_AUTHOR("Tias Guns <tias@ulyssis.org>"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +/* + * Definitions & global arrays. + */ + +#define DYNAPRO_FORMAT_TOUCH_BIT 0x40 +#define DYNAPRO_FORMAT_LENGTH 3 +#define DYNAPRO_RESPONSE_BEGIN_BYTE 0x80 + +#define DYNAPRO_MIN_XC 0 +#define DYNAPRO_MAX_XC 0x3ff +#define DYNAPRO_MIN_YC 0 +#define DYNAPRO_MAX_YC 0x3ff + +#define DYNAPRO_GET_XC(data) (data[1] | ((data[0] & 0x38) << 4)) +#define DYNAPRO_GET_YC(data) (data[2] | ((data[0] & 0x07) << 7)) +#define DYNAPRO_GET_TOUCHED(data) (DYNAPRO_FORMAT_TOUCH_BIT & data[0]) + +/* + * Per-touchscreen data. + */ + +struct dynapro { + struct input_dev *dev; + struct serio *serio; + int idx; + unsigned char data[DYNAPRO_FORMAT_LENGTH]; + char phys[32]; +}; + +static void dynapro_process_data(struct dynapro *pdynapro) +{ + struct input_dev *dev = pdynapro->dev; + + if (DYNAPRO_FORMAT_LENGTH == ++pdynapro->idx) { + input_report_abs(dev, ABS_X, DYNAPRO_GET_XC(pdynapro->data)); + input_report_abs(dev, ABS_Y, DYNAPRO_GET_YC(pdynapro->data)); + input_report_key(dev, BTN_TOUCH, + DYNAPRO_GET_TOUCHED(pdynapro->data)); + input_sync(dev); + + pdynapro->idx = 0; + } +} + +static irqreturn_t dynapro_interrupt(struct serio *serio, + unsigned char data, unsigned int flags) +{ + struct dynapro *pdynapro = serio_get_drvdata(serio); + + pdynapro->data[pdynapro->idx] = data; + + if (DYNAPRO_RESPONSE_BEGIN_BYTE & pdynapro->data[0]) + dynapro_process_data(pdynapro); + else + dev_dbg(&serio->dev, "unknown/unsynchronized data: %x\n", + pdynapro->data[0]); + + return IRQ_HANDLED; +} + +static void dynapro_disconnect(struct serio *serio) +{ + struct dynapro *pdynapro = serio_get_drvdata(serio); + + input_get_device(pdynapro->dev); + input_unregister_device(pdynapro->dev); + serio_close(serio); + serio_set_drvdata(serio, NULL); + input_put_device(pdynapro->dev); + kfree(pdynapro); +} + +/* + * dynapro_connect() is the routine that is called when someone adds a + * new serio device that supports dynapro protocol and registers it as + * an input device. This is usually accomplished using inputattach. + */ + +static int dynapro_connect(struct serio *serio, struct serio_driver *drv) +{ + struct dynapro *pdynapro; + struct input_dev *input_dev; + int err; + + pdynapro = kzalloc(sizeof(struct dynapro), GFP_KERNEL); + input_dev = input_allocate_device(); + if (!pdynapro || !input_dev) { + err = -ENOMEM; + goto fail1; + } + + pdynapro->serio = serio; + pdynapro->dev = input_dev; + snprintf(pdynapro->phys, sizeof(pdynapro->phys), + "%s/input0", serio->phys); + + input_dev->name = "Dynapro Serial TouchScreen"; + input_dev->phys = pdynapro->phys; + input_dev->id.bustype = BUS_RS232; + input_dev->id.vendor = SERIO_DYNAPRO; + input_dev->id.product = 0; + input_dev->id.version = 0x0001; + input_dev->dev.parent = &serio->dev; + input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); + input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); + input_set_abs_params(pdynapro->dev, ABS_X, + DYNAPRO_MIN_XC, DYNAPRO_MAX_XC, 0, 0); + input_set_abs_params(pdynapro->dev, ABS_Y, + DYNAPRO_MIN_YC, DYNAPRO_MAX_YC, 0, 0); + + serio_set_drvdata(serio, pdynapro); + + err = serio_open(serio, drv); + if (err) + goto fail2; + + err = input_register_device(pdynapro->dev); + if (err) + goto fail3; + + return 0; + + fail3: serio_close(serio); + fail2: serio_set_drvdata(serio, NULL); + fail1: input_free_device(input_dev); + kfree(pdynapro); + return err; +} + +/* + * The serio driver structure. + */ + +static struct serio_device_id dynapro_serio_ids[] = { + { + .type = SERIO_RS232, + .proto = SERIO_DYNAPRO, + .id = SERIO_ANY, + .extra = SERIO_ANY, + }, + { 0 } +}; + +MODULE_DEVICE_TABLE(serio, dynapro_serio_ids); + +static struct serio_driver dynapro_drv = { + .driver = { + .name = "dynapro", + }, + .description = DRIVER_DESC, + .id_table = dynapro_serio_ids, + .interrupt = dynapro_interrupt, + .connect = dynapro_connect, + .disconnect = dynapro_disconnect, +}; + +/* + * The functions for inserting/removing us as a module. + */ + +static int __init dynapro_init(void) +{ + return serio_register_driver(&dynapro_drv); +} + +static void __exit dynapro_exit(void) +{ + serio_unregister_driver(&dynapro_drv); +} + +module_init(dynapro_init); +module_exit(dynapro_exit); diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c new file mode 100644 index 00000000000..6386b441ef8 --- /dev/null +++ b/drivers/input/touchscreen/s3c2410_ts.c @@ -0,0 +1,457 @@ +/* + * Samsung S3C24XX touchscreen driver + * + * This program is free software; you can redistribute it and/or modify + * it under the term 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 + * + * Copyright 2004 Arnaud Patard <arnaud.patard@rtp-net.org> + * Copyright 2008 Ben Dooks <ben-linux@fluff.org> + * Copyright 2009 Simtec Electronics <linux@simtec.co.uk> + * + * Additional work by Herbert Pötzl <herbert@13thfloor.at> and + * Harald Welte <laforge@openmoko.org> + */ + +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/gpio.h> +#include <linux/input.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <plat/adc.h> +#include <plat/regs-adc.h> + +#include <mach/regs-gpio.h> +#include <mach/ts.h> + +#define TSC_SLEEP (S3C2410_ADCTSC_PULL_UP_DISABLE | S3C2410_ADCTSC_XY_PST(0)) + +#define INT_DOWN (0) +#define INT_UP (1 << 8) + +#define WAIT4INT (S3C2410_ADCTSC_YM_SEN | \ + S3C2410_ADCTSC_YP_SEN | \ + S3C2410_ADCTSC_XP_SEN | \ + S3C2410_ADCTSC_XY_PST(3)) + +#define AUTOPST (S3C2410_ADCTSC_YM_SEN | \ + S3C2410_ADCTSC_YP_SEN | \ + S3C2410_ADCTSC_XP_SEN | \ + S3C2410_ADCTSC_AUTO_PST | \ + S3C2410_ADCTSC_XY_PST(0)) + +/* Per-touchscreen data. */ + +/** + * struct s3c2410ts - driver touchscreen state. + * @client: The ADC client we registered with the core driver. + * @dev: The device we are bound to. + * @input: The input device we registered with the input subsystem. + * @clock: The clock for the adc. + * @io: Pointer to the IO base. + * @xp: The accumulated X position data. + * @yp: The accumulated Y position data. + * @irq_tc: The interrupt number for pen up/down interrupt + * @count: The number of samples collected. + * @shift: The log2 of the maximum count to read in one go. + */ +struct s3c2410ts { + struct s3c_adc_client *client; + struct device *dev; + struct input_dev *input; + struct clk *clock; + void __iomem *io; + unsigned long xp; + unsigned long yp; + int irq_tc; + int count; + int shift; +}; + +static struct s3c2410ts ts; + +/** + * s3c2410_ts_connect - configure gpio for s3c2410 systems + * + * Configure the GPIO for the S3C2410 system, where we have external FETs + * connected to the device (later systems such as the S3C2440 integrate + * these into the device). +*/ +static inline void s3c2410_ts_connect(void) +{ + s3c2410_gpio_cfgpin(S3C2410_GPG(12), S3C2410_GPG12_XMON); + s3c2410_gpio_cfgpin(S3C2410_GPG(13), S3C2410_GPG13_nXPON); + s3c2410_gpio_cfgpin(S3C2410_GPG(14), S3C2410_GPG14_YMON); + s3c2410_gpio_cfgpin(S3C2410_GPG(15), S3C2410_GPG15_nYPON); +} + +/** + * get_down - return the down state of the pen + * @data0: The data read from ADCDAT0 register. + * @data1: The data read from ADCDAT1 register. + * + * Return non-zero if both readings show that the pen is down. + */ +static inline bool get_down(unsigned long data0, unsigned long data1) +{ + /* returns true if both data values show stylus down */ + return (!(data0 & S3C2410_ADCDAT0_UPDOWN) && + !(data1 & S3C2410_ADCDAT0_UPDOWN)); +} + +static void touch_timer_fire(unsigned long data) +{ + unsigned long data0; + unsigned long data1; + bool down; + + data0 = readl(ts.io + S3C2410_ADCDAT0); + data1 = readl(ts.io + S3C2410_ADCDAT1); + + down = get_down(data0, data1); + + if (ts.count == (1 << ts.shift)) { + ts.xp >>= ts.shift; + ts.yp >>= ts.shift; + + dev_dbg(ts.dev, "%s: X=%lu, Y=%lu, count=%d\n", + __func__, ts.xp, ts.yp, ts.count); + + input_report_abs(ts.input, ABS_X, ts.xp); + input_report_abs(ts.input, ABS_Y, ts.yp); + + input_report_key(ts.input, BTN_TOUCH, 1); + input_sync(ts.input); + + ts.xp = 0; + ts.yp = 0; + ts.count = 0; + } + + if (down) { + s3c_adc_start(ts.client, 0, 1 << ts.shift); + } else { + ts.count = 0; + + input_report_key(ts.input, BTN_TOUCH, 0); + input_sync(ts.input); + + writel(WAIT4INT | INT_DOWN, ts.io + S3C2410_ADCTSC); + } +} + +static DEFINE_TIMER(touch_timer, touch_timer_fire, 0, 0); + +/** + * stylus_irq - touchscreen stylus event interrupt + * @irq: The interrupt number + * @dev_id: The device ID. + * + * Called when the IRQ_TC is fired for a pen up or down event. + */ +static irqreturn_t stylus_irq(int irq, void *dev_id) +{ + unsigned long data0; + unsigned long data1; + bool down; + + data0 = readl(ts.io + S3C2410_ADCDAT0); + data1 = readl(ts.io + S3C2410_ADCDAT1); + + down = get_down(data0, data1); + + /* TODO we should never get an interrupt with down set while + * the timer is running, but maybe we ought to verify that the + * timer isn't running anyways. */ + + if (down) + s3c_adc_start(ts.client, 0, 1 << ts.shift); + else + dev_info(ts.dev, "%s: count=%d\n", __func__, ts.count); + + return IRQ_HANDLED; +} + +/** + * s3c24xx_ts_conversion - ADC conversion callback + * @client: The client that was registered with the ADC core. + * @data0: The reading from ADCDAT0. + * @data1: The reading from ADCDAT1. + * @left: The number of samples left. + * + * Called when a conversion has finished. + */ +static void s3c24xx_ts_conversion(struct s3c_adc_client *client, + unsigned data0, unsigned data1, + unsigned *left) +{ + dev_dbg(ts.dev, "%s: %d,%d\n", __func__, data0, data1); + + ts.xp += data0; + ts.yp += data1; + + ts.count++; + + /* From tests, it seems that it is unlikely to get a pen-up + * event during the conversion process which means we can + * ignore any pen-up events with less than the requisite + * count done. + * + * In several thousand conversions, no pen-ups where detected + * before count completed. + */ +} + +/** + * s3c24xx_ts_select - ADC selection callback. + * @client: The client that was registered with the ADC core. + * @select: The reason for select. + * + * Called when the ADC core selects (or deslects) us as a client. + */ +static void s3c24xx_ts_select(struct s3c_adc_client *client, unsigned select) +{ + if (select) { + writel(S3C2410_ADCTSC_PULL_UP_DISABLE | AUTOPST, + ts.io + S3C2410_ADCTSC); + } else { + mod_timer(&touch_timer, jiffies+1); + writel(WAIT4INT | INT_UP, ts.io + S3C2410_ADCTSC); + } +} + +/** + * s3c2410ts_probe - device core probe entry point + * @pdev: The device we are being bound to. + * + * Initialise, find and allocate any resources we need to run and then + * register with the ADC and input systems. + */ +static int __devinit s3c2410ts_probe(struct platform_device *pdev) +{ + struct s3c2410_ts_mach_info *info; + struct device *dev = &pdev->dev; + struct input_dev *input_dev; + struct resource *res; + int ret = -EINVAL; + + /* Initialise input stuff */ + memset(&ts, 0, sizeof(struct s3c2410ts)); + + ts.dev = dev; + + info = pdev->dev.platform_data; + if (!info) { + dev_err(dev, "no platform data, cannot attach\n"); + return -EINVAL; + } + + dev_dbg(dev, "initialising touchscreen\n"); + + ts.clock = clk_get(dev, "adc"); + if (IS_ERR(ts.clock)) { + dev_err(dev, "cannot get adc clock source\n"); + return -ENOENT; + } + + clk_enable(ts.clock); + dev_dbg(dev, "got and enabled clocks\n"); + + ts.irq_tc = ret = platform_get_irq(pdev, 0); + if (ret < 0) { + dev_err(dev, "no resource for interrupt\n"); + goto err_clk; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "no resource for registers\n"); + ret = -ENOENT; + goto err_clk; + } + + ts.io = ioremap(res->start, resource_size(res)); + if (ts.io == NULL) { + dev_err(dev, "cannot map registers\n"); + ret = -ENOMEM; + goto err_clk; + } + + /* Configure the touchscreen external FETs on the S3C2410 */ + if (!platform_get_device_id(pdev)->driver_data) + s3c2410_ts_connect(); + + ts.client = s3c_adc_register(pdev, s3c24xx_ts_select, + s3c24xx_ts_conversion, 1); + if (IS_ERR(ts.client)) { + dev_err(dev, "failed to register adc client\n"); + ret = PTR_ERR(ts.client); + goto err_iomap; + } + + /* Initialise registers */ + if ((info->delay & 0xffff) > 0) + writel(info->delay & 0xffff, ts.io + S3C2410_ADCDLY); + + writel(WAIT4INT | INT_DOWN, ts.io + S3C2410_ADCTSC); + + input_dev = input_allocate_device(); + if (!input_dev) { + dev_err(dev, "Unable to allocate the input device !!\n"); + ret = -ENOMEM; + goto err_iomap; + } + + ts.input = input_dev; + ts.input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); + ts.input->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); + input_set_abs_params(ts.input, ABS_X, 0, 0x3FF, 0, 0); + input_set_abs_params(ts.input, ABS_Y, 0, 0x3FF, 0, 0); + + ts.input->name = "S3C24XX TouchScreen"; + ts.input->id.bustype = BUS_HOST; + ts.input->id.vendor = 0xDEAD; + ts.input->id.product = 0xBEEF; + ts.input->id.version = 0x0102; + + ts.shift = info->oversampling_shift; + + ret = request_irq(ts.irq_tc, stylus_irq, IRQF_DISABLED, + "s3c2410_ts_pen", ts.input); + if (ret) { + dev_err(dev, "cannot get TC interrupt\n"); + goto err_inputdev; + } + + dev_info(dev, "driver attached, registering input device\n"); + + /* All went ok, so register to the input system */ + ret = input_register_device(ts.input); + if (ret < 0) { + dev_err(dev, "failed to register input device\n"); + ret = -EIO; + goto err_tcirq; + } + + return 0; + + err_tcirq: + free_irq(ts.irq_tc, ts.input); + err_inputdev: + input_unregister_device(ts.input); + err_iomap: + iounmap(ts.io); + err_clk: + del_timer_sync(&touch_timer); + clk_put(ts.clock); + return ret; +} + +/** + * s3c2410ts_remove - device core removal entry point + * @pdev: The device we are being removed from. + * + * Free up our state ready to be removed. + */ +static int __devexit s3c2410ts_remove(struct platform_device *pdev) +{ + free_irq(ts.irq_tc, ts.input); + del_timer_sync(&touch_timer); + + clk_disable(ts.clock); + clk_put(ts.clock); + + input_unregister_device(ts.input); + iounmap(ts.io); + + return 0; +} + +#ifdef CONFIG_PM +static int s3c2410ts_suspend(struct device *dev) +{ + writel(TSC_SLEEP, ts.io + S3C2410_ADCTSC); + disable_irq(ts.irq_tc); + clk_disable(ts.clock); + + return 0; +} + +static int s3c2410ts_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct s3c2410_ts_mach_info *info = pdev->dev.platform_data; + + clk_enable(ts.clock); + + /* Initialise registers */ + if ((info->delay & 0xffff) > 0) + writel(info->delay & 0xffff, ts.io + S3C2410_ADCDLY); + + writel(WAIT4INT | INT_DOWN, ts.io + S3C2410_ADCTSC); + + return 0; +} + +static struct dev_pm_ops s3c_ts_pmops = { + .suspend = s3c2410ts_suspend, + .resume = s3c2410ts_resume, +}; +#endif + +static struct platform_device_id s3cts_driver_ids[] = { + { "s3c2410-ts", 0 }, + { "s3c2440-ts", 1 }, + { } +}; +MODULE_DEVICE_TABLE(platform, s3cts_driver_ids); + +static struct platform_driver s3c_ts_driver = { + .driver = { + .name = "s3c24xx-ts", + .owner = THIS_MODULE, +#ifdef CONFIG_PM + .pm = &s3c_ts_pmops, +#endif + }, + .id_table = s3cts_driver_ids, + .probe = s3c2410ts_probe, + .remove = __devexit_p(s3c2410ts_remove), +}; + +static int __init s3c2410ts_init(void) +{ + return platform_driver_register(&s3c_ts_driver); +} + +static void __exit s3c2410ts_exit(void) +{ + platform_driver_unregister(&s3c_ts_driver); +} + +module_init(s3c2410ts_init); +module_exit(s3c2410ts_exit); + +MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>, " + "Ben Dooks <ben@simtec.co.uk>, " + "Simtec Electronics <linux@simtec.co.uk>"); +MODULE_DESCRIPTION("S3C24XX Touchscreen driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/input/touchscreen/ucb1400_ts.c b/drivers/input/touchscreen/ucb1400_ts.c index 095f84b1f56..89dcbe7b4b0 100644 --- a/drivers/input/touchscreen/ucb1400_ts.c +++ b/drivers/input/touchscreen/ucb1400_ts.c @@ -355,10 +355,13 @@ static int ucb1400_ts_probe(struct platform_device *dev) goto err; } - error = ucb1400_ts_detect_irq(ucb); - if (error) { - printk(KERN_ERR "UCB1400: IRQ probe failed\n"); - goto err_free_devs; + /* Only in case the IRQ line wasn't supplied, try detecting it */ + if (ucb->irq < 0) { + error = ucb1400_ts_detect_irq(ucb); + if (error) { + printk(KERN_ERR "UCB1400: IRQ probe failed\n"); + goto err_free_devs; + } } init_waitqueue_head(&ucb->ts_wait); diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c index 68ece5801a5..09a5e7341bd 100644 --- a/drivers/input/touchscreen/usbtouchscreen.c +++ b/drivers/input/touchscreen/usbtouchscreen.c @@ -14,6 +14,7 @@ * - General Touch * - GoTop Super_Q2/GogoPen/PenPower tablets * - JASTEC USB touch controller/DigiTech DTR-02U + * - Zytronic capacitive touchscreen * * Copyright (C) 2004-2007 by Daniel Ritz <daniel.ritz@gmx.ch> * Copyright (C) by Todd E. Johnson (mtouchusb.c) @@ -73,6 +74,15 @@ struct usbtouch_device_info { int min_press, max_press; int rept_size; + /* + * Always service the USB devices irq not just when the input device is + * open. This is useful when devices have a watchdog which prevents us + * from periodically polling the device. Leave this unset unless your + * touchscreen device requires it, as it does consume more of the USB + * bandwidth. + */ + bool irq_always; + void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len); /* @@ -121,6 +131,8 @@ enum { DEVTYPE_GOTOP, DEVTYPE_JASTEC, DEVTYPE_E2I, + DEVTYPE_ZYTRONIC, + DEVTYPE_TC5UH, }; #define USB_DEVICE_HID_CLASS(vend, prod) \ @@ -201,6 +213,15 @@ static struct usb_device_id usbtouch_devices[] = { #ifdef CONFIG_TOUCHSCREEN_USB_E2I {USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I}, #endif + +#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC + {USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC}, +#endif + +#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC5UH + {USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC5UH}, +#endif + {} }; @@ -538,6 +559,19 @@ static int irtouch_read_data(struct usbtouch_usb *dev, unsigned char *pkt) } #endif +/***************************************************************************** + * ET&T TC5UH part + */ +#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC5UH +static int tc5uh_read_data(struct usbtouch_usb *dev, unsigned char *pkt) +{ + dev->x = ((pkt[2] & 0x0F) << 8) | pkt[1]; + dev->y = ((pkt[4] & 0x0F) << 8) | pkt[3]; + dev->touch = pkt[0] & 0x01; + + return 1; +} +#endif /***************************************************************************** * IdealTEK URTC1000 Part @@ -621,6 +655,39 @@ static int jastec_read_data(struct usbtouch_usb *dev, unsigned char *pkt) } #endif +/***************************************************************************** + * Zytronic Part + */ +#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC +static int zytronic_read_data(struct usbtouch_usb *dev, unsigned char *pkt) +{ + switch (pkt[0]) { + case 0x3A: /* command response */ + dbg("%s: Command response %d", __func__, pkt[1]); + break; + + case 0xC0: /* down */ + dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7); + dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7); + dev->touch = 1; + dbg("%s: down %d,%d", __func__, dev->x, dev->y); + return 1; + + case 0x80: /* up */ + dev->x = (pkt[1] & 0x7f) | ((pkt[2] & 0x07) << 7); + dev->y = (pkt[3] & 0x7f) | ((pkt[4] & 0x07) << 7); + dev->touch = 0; + dbg("%s: up %d,%d", __func__, dev->x, dev->y); + return 1; + + default: + dbg("%s: Unknown return %d", __func__, pkt[0]); + break; + } + + return 0; +} +#endif /***************************************************************************** * the different device descriptors @@ -783,6 +850,29 @@ static struct usbtouch_device_info usbtouch_dev_info[] = { .read_data = e2i_read_data, }, #endif + +#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC + [DEVTYPE_ZYTRONIC] = { + .min_xc = 0x0, + .max_xc = 0x03ff, + .min_yc = 0x0, + .max_yc = 0x03ff, + .rept_size = 5, + .read_data = zytronic_read_data, + .irq_always = true, + }, +#endif + +#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC5UH + [DEVTYPE_TC5UH] = { + .min_xc = 0x0, + .max_xc = 0x0fff, + .min_yc = 0x0, + .max_yc = 0x0fff, + .rept_size = 5, + .read_data = tc5uh_read_data, + }, +#endif }; @@ -933,8 +1023,10 @@ static int usbtouch_open(struct input_dev *input) usbtouch->irq->dev = usbtouch->udev; - if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) - return -EIO; + if (!usbtouch->type->irq_always) { + if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) + return -EIO; + } return 0; } @@ -943,7 +1035,8 @@ static void usbtouch_close(struct input_dev *input) { struct usbtouch_usb *usbtouch = input_get_drvdata(input); - usb_kill_urb(usbtouch->irq); + if (!usbtouch->type->irq_always) + usb_kill_urb(usbtouch->irq); } @@ -1066,6 +1159,9 @@ static int usbtouch_probe(struct usb_interface *intf, usb_set_intfdata(intf, usbtouch); + if (usbtouch->type->irq_always) + usb_submit_urb(usbtouch->irq, GFP_KERNEL); + return 0; out_free_buffers: @@ -1087,7 +1183,7 @@ static void usbtouch_disconnect(struct usb_interface *intf) dbg("%s - usbtouch is initialized, cleaning up", __func__); usb_set_intfdata(intf, NULL); - usb_kill_urb(usbtouch->irq); + /* this will stop IO via close */ input_unregister_device(usbtouch->input); usb_free_urb(usbtouch->irq); usbtouch_free_buffers(interface_to_usbdev(intf), usbtouch); |