diff options
| -rw-r--r-- | drivers/input/touchscreen/Kconfig | 12 | ||||
| -rw-r--r-- | drivers/input/touchscreen/Makefile | 1 | ||||
| -rw-r--r-- | drivers/input/touchscreen/ipaq-micro-ts.c | 142 |
3 files changed, 155 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index a23a94bb4bcb..6bb9a7dd23b6 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -471,6 +471,18 @@ config TOUCHSCREEN_HP7XX To compile this driver as a module, choose M here: the module will be called jornada720_ts. +config TOUCHSCREEN_IPAQ_MICRO + tristate "HP iPAQ Atmel Micro ASIC touchscreen" + depends on MFD_IPAQ_MICRO + help + Say Y here to enable support for the touchscreen attached to + the Atmel Micro peripheral controller on iPAQ h3100/h3600/h3700 + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called ipaq-micro-ts. + config TOUCHSCREEN_HTCPEN tristate "HTC Shift X9500 touchscreen" depends on ISA diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 126479d8c29a..4be94fce41af 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -46,6 +46,7 @@ obj-$(CONFIG_TOUCHSCREEN_MTOUCH) += mtouch.o obj-$(CONFIG_TOUCHSCREEN_MK712) += mk712.o obj-$(CONFIG_TOUCHSCREEN_HP600) += hp680_ts_input.o obj-$(CONFIG_TOUCHSCREEN_HP7XX) += jornada720_ts.o +obj-$(CONFIG_TOUCHSCREEN_IPAQ_MICRO) += ipaq-micro-ts.o obj-$(CONFIG_TOUCHSCREEN_HTCPEN) += htcpen.o obj-$(CONFIG_TOUCHSCREEN_USB_COMPOSITE) += usbtouchscreen.o obj-$(CONFIG_TOUCHSCREEN_PCAP) += pcap_ts.o diff --git a/drivers/input/touchscreen/ipaq-micro-ts.c b/drivers/input/touchscreen/ipaq-micro-ts.c new file mode 100644 index 000000000000..53fa5c361be1 --- /dev/null +++ b/drivers/input/touchscreen/ipaq-micro-ts.c @@ -0,0 +1,142 @@ +/* + * 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. + * + * h3600 atmel micro companion support, touchscreen subdevice + * Author : Alessandro Gardich <gremlin@gremlin.it> + * Author : Dmitry Artamonow <mad_soft@inbox.ru> + * Author : Linus Walleij <linus.walleij@linaro.org> + * + */ + +#include <asm/byteorder.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/pm.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/input.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/mfd/ipaq-micro.h> + +struct touchscreen_data { + struct input_dev *input; + struct ipaq_micro *micro; +}; + +static void micro_ts_receive(void *data, int len, unsigned char *msg) +{ + struct touchscreen_data *ts = data; + + if (len == 4) { + input_report_abs(ts->input, ABS_X, + be16_to_cpup((__be16 *) &msg[2])); + input_report_abs(ts->input, ABS_Y, + be16_to_cpup((__be16 *) &msg[0])); + input_report_key(ts->input, BTN_TOUCH, 1); + input_sync(ts->input); + } else if (len == 0) { + input_report_abs(ts->input, ABS_X, 0); + input_report_abs(ts->input, ABS_Y, 0); + input_report_key(ts->input, BTN_TOUCH, 0); + input_sync(ts->input); + } +} + +static int micro_ts_probe(struct platform_device *pdev) +{ + struct touchscreen_data *ts; + int ret; + + ts = devm_kzalloc(&pdev->dev, sizeof(*ts), GFP_KERNEL); + if (!ts) + return -ENOMEM; + ts->micro = dev_get_drvdata(pdev->dev.parent); + + platform_set_drvdata(pdev, ts); + + ts->input = devm_input_allocate_device(&pdev->dev); + if (!ts->input) { + dev_err(&pdev->dev, "failed to allocate input device\n"); + return -ENOMEM; + } + + input_set_capability(ts->input, EV_KEY, BTN_TOUCH); + input_set_capability(ts->input, EV_ABS, ABS_X); + input_set_capability(ts->input, EV_ABS, ABS_Y); + input_set_abs_params(ts->input, ABS_X, 0, 1023, 0, 0); + input_set_abs_params(ts->input, ABS_Y, 0, 1023, 0, 0); + + ts->input->name = "ipaq micro ts"; + + ret = input_register_device(ts->input); + if (ret) { + dev_err(&pdev->dev, "error registering touch input\n"); + return ret; + } + + spin_lock_irq(&ts->micro->lock); + ts->micro->ts = micro_ts_receive; + ts->micro->ts_data = ts; + spin_unlock_irq(&ts->micro->lock); + + dev_info(&pdev->dev, "iPAQ micro touchscreen\n"); + return 0; +} + +static int micro_ts_remove(struct platform_device *pdev) +{ + struct touchscreen_data *ts = platform_get_drvdata(pdev); + + spin_lock_irq(&ts->micro->lock); + ts->micro->ts = NULL; + ts->micro->ts_data = NULL; + spin_unlock_irq(&ts->micro->lock); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int micro_ts_suspend(struct device *dev) +{ + struct touchscreen_data *ts = dev_get_drvdata(dev); + + spin_lock_irq(&ts->micro->lock); + ts->micro->ts = NULL; + ts->micro->ts_data = NULL; + spin_unlock_irq(&ts->micro->lock); + return 0; +} + +static int micro_ts_resume(struct device *dev) +{ + struct touchscreen_data *ts = dev_get_drvdata(dev); + + spin_lock_irq(&ts->micro->lock); + ts->micro->ts = micro_ts_receive; + ts->micro->ts_data = ts; + spin_unlock_irq(&ts->micro->lock); + return 0; +} +#endif + +static const struct dev_pm_ops micro_ts_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(micro_ts_suspend, micro_ts_resume) +}; + +static struct platform_driver micro_ts_device_driver = { + .driver = { + .name = "ipaq-micro-ts", + .pm = µ_ts_dev_pm_ops, + }, + .probe = micro_ts_probe, + .remove = micro_ts_remove, +}; +module_platform_driver(micro_ts_device_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("driver for iPAQ Atmel micro touchscreen"); +MODULE_ALIAS("platform:ipaq-micro-ts"); |