diff options
Diffstat (limited to 'drivers/input')
24 files changed, 800 insertions, 581 deletions
diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index 53eaf89f2db5..71db1930573f 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -252,7 +252,7 @@ void input_mt_sync_frame(struct input_dev *dev) if (mt->flags & INPUT_MT_DROP_UNUSED) { for (s = mt->slots; s != mt->slots + mt->num_slots; s++) { - if (s->frame == mt->frame) + if (input_mt_is_used(mt, s)) continue; input_mt_slot(dev, s - mt->slots); input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, -1); diff --git a/drivers/input/joystick/analog.c b/drivers/input/joystick/analog.c index 358cd7ee905b..9135606c8649 100644 --- a/drivers/input/joystick/analog.c +++ b/drivers/input/joystick/analog.c @@ -158,14 +158,10 @@ static unsigned int get_time_pit(void) #define GET_TIME(x) rdtscl(x) #define DELTA(x,y) ((y)-(x)) #define TIME_NAME "TSC" -#elif defined(__alpha__) +#elif defined(__alpha__) || defined(CONFIG_MN10300) || defined(CONFIG_ARM) || defined(CONFIG_TILE) #define GET_TIME(x) do { x = get_cycles(); } while (0) #define DELTA(x,y) ((y)-(x)) -#define TIME_NAME "PCC" -#elif defined(CONFIG_MN10300) -#define GET_TIME(x) do { x = get_cycles(); } while (0) -#define DELTA(x, y) ((x) - (y)) -#define TIME_NAME "TSC" +#define TIME_NAME "get_cycles" #else #define FAKE_TIME static unsigned long analog_faketime = 0; diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index 992137cf3a64..ac0500667000 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -409,7 +409,7 @@ config KEYBOARD_NEWTON config KEYBOARD_NOMADIK tristate "ST-Ericsson Nomadik SKE keyboard" - depends on PLAT_NOMADIK + depends on (ARCH_NOMADIK || ARCH_U8500) select INPUT_MATRIXKMAP help Say Y here if you want to use a keypad provided on the SKE controller @@ -554,6 +554,7 @@ config KEYBOARD_OMAP config KEYBOARD_OMAP4 tristate "TI OMAP4+ keypad support" + depends on ARCH_OMAP2PLUS select INPUT_MATRIXKMAP help Say Y here if you want to use the OMAP4+ keypad. diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c index f4ff0dda7597..71d77192ac1e 100644 --- a/drivers/input/keyboard/matrix_keypad.c +++ b/drivers/input/keyboard/matrix_keypad.c @@ -403,7 +403,7 @@ matrix_keypad_parse_dt(struct device *dev) struct matrix_keypad_platform_data *pdata; struct device_node *np = dev->of_node; unsigned int *gpios; - int i; + int i, nrow, ncol; if (!np) { dev_err(dev, "device lacks DT data\n"); @@ -416,9 +416,9 @@ matrix_keypad_parse_dt(struct device *dev) return ERR_PTR(-ENOMEM); } - pdata->num_row_gpios = of_gpio_named_count(np, "row-gpios"); - pdata->num_col_gpios = of_gpio_named_count(np, "col-gpios"); - if (!pdata->num_row_gpios || !pdata->num_col_gpios) { + pdata->num_row_gpios = nrow = of_gpio_named_count(np, "row-gpios"); + pdata->num_col_gpios = ncol = of_gpio_named_count(np, "col-gpios"); + if (nrow <= 0 || ncol <= 0) { dev_err(dev, "number of keypad rows/columns not specified\n"); return ERR_PTR(-EINVAL); } diff --git a/drivers/input/keyboard/spear-keyboard.c b/drivers/input/keyboard/spear-keyboard.c index 695d237417d6..cb1e8f614631 100644 --- a/drivers/input/keyboard/spear-keyboard.c +++ b/drivers/input/keyboard/spear-keyboard.c @@ -228,11 +228,9 @@ static int spear_kbd_probe(struct platform_device *pdev) kbd->suspended_rate = pdata->suspended_rate; } - kbd->io_base = devm_request_and_ioremap(&pdev->dev, res); - if (!kbd->io_base) { - dev_err(&pdev->dev, "request-ioremap failed for kbd_region\n"); - return -ENOMEM; - } + kbd->io_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(kbd->io_base)) + return PTR_ERR(kbd->io_base); kbd->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(kbd->clk)) diff --git a/drivers/input/keyboard/tca8418_keypad.c b/drivers/input/keyboard/tca8418_keypad.c index 50e9c5e195e1..a34cc6714e5b 100644 --- a/drivers/input/keyboard/tca8418_keypad.c +++ b/drivers/input/keyboard/tca8418_keypad.c @@ -384,7 +384,7 @@ static const struct i2c_device_id tca8418_id[] = { MODULE_DEVICE_TABLE(i2c, tca8418_id); #ifdef CONFIG_OF -static const struct of_device_id tca8418_dt_ids[] __devinitconst = { +static const struct of_device_id tca8418_dt_ids[] = { { .compatible = "ti,tca8418", }, { } }; diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c index d89e7d392d1e..0e138ebcc768 100644 --- a/drivers/input/keyboard/tegra-kbc.c +++ b/drivers/input/keyboard/tegra-kbc.c @@ -30,7 +30,7 @@ #include <linux/clk.h> #include <linux/slab.h> #include <linux/input/matrix_keypad.h> -#include <mach/clk.h> +#include <linux/clk/tegra.h> #define KBC_MAX_GPIO 24 #define KBC_MAX_KPENT 8 diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 2a1647ef5610..259ef31abb18 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -72,6 +72,16 @@ config INPUT_AD714X_SPI To compile this driver as a module, choose M here: the module will be called ad714x-spi. +config INPUT_ARIZONA_HAPTICS + tristate "Arizona haptics support" + depends on MFD_ARIZONA && SND_SOC + select INPUT_FF_MEMLESS + help + Say Y to enable support for the haptics module in Arizona CODECs. + + To compile this driver as a module, choose M here: the + module will be called arizona-haptics. + config INPUT_BMA150 tristate "BMA150/SMB380 acceleration sensor support" depends on I2C diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 1f874afeea6a..1f1e1b109d9d 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_INPUT_ADXL34X) += adxl34x.o obj-$(CONFIG_INPUT_ADXL34X_I2C) += adxl34x-i2c.o obj-$(CONFIG_INPUT_ADXL34X_SPI) += adxl34x-spi.o obj-$(CONFIG_INPUT_APANEL) += apanel.o +obj-$(CONFIG_INPUT_ARIZONA_HAPTICS) += arizona-haptics.o obj-$(CONFIG_INPUT_ATI_REMOTE2) += ati_remote2.o obj-$(CONFIG_INPUT_ATLAS_BTNS) += atlas_btns.o obj-$(CONFIG_INPUT_BFIN_ROTARY) += bfin_rotary.o diff --git a/drivers/input/misc/arizona-haptics.c b/drivers/input/misc/arizona-haptics.c new file mode 100644 index 000000000000..7a04f54ef961 --- /dev/null +++ b/drivers/input/misc/arizona-haptics.c @@ -0,0 +1,255 @@ +/* + * Arizona haptics driver + * + * Copyright 2012 Wolfson Microelectronics plc + * + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + * + * 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. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/input.h> +#include <linux/slab.h> + +#include <sound/soc.h> +#include <sound/soc-dapm.h> + +#include <linux/mfd/arizona/core.h> +#include <linux/mfd/arizona/pdata.h> +#include <linux/mfd/arizona/registers.h> + +struct arizona_haptics { + struct arizona *arizona; + struct input_dev *input_dev; + struct work_struct work; + + struct mutex mutex; + u8 intensity; +}; + +static void arizona_haptics_work(struct work_struct *work) +{ + struct arizona_haptics *haptics = container_of(work, + struct arizona_haptics, + work); + struct arizona *arizona = haptics->arizona; + struct mutex *dapm_mutex = &arizona->dapm->card->dapm_mutex; + int ret; + + if (!haptics->arizona->dapm) { + dev_err(arizona->dev, "No DAPM context\n"); + return; + } + + if (haptics->intensity) { + ret = regmap_update_bits(arizona->regmap, + ARIZONA_HAPTICS_PHASE_2_INTENSITY, + ARIZONA_PHASE2_INTENSITY_MASK, + haptics->intensity); + if (ret != 0) { + dev_err(arizona->dev, "Failed to set intensity: %d\n", + ret); + return; + } + + /* This enable sequence will be a noop if already enabled */ + ret = regmap_update_bits(arizona->regmap, + ARIZONA_HAPTICS_CONTROL_1, + ARIZONA_HAP_CTRL_MASK, + 1 << ARIZONA_HAP_CTRL_SHIFT); + if (ret != 0) { + dev_err(arizona->dev, "Failed to start haptics: %d\n", + ret); + return; + } + + mutex_lock_nested(dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); + + ret = snd_soc_dapm_enable_pin(arizona->dapm, "HAPTICS"); + if (ret != 0) { + dev_err(arizona->dev, "Failed to start HAPTICS: %d\n", + ret); + mutex_unlock(dapm_mutex); + return; + } + + ret = snd_soc_dapm_sync(arizona->dapm); + if (ret != 0) { + dev_err(arizona->dev, "Failed to sync DAPM: %d\n", + ret); + mutex_unlock(dapm_mutex); + return; + } + + mutex_unlock(dapm_mutex); + + } else { + /* This disable sequence will be a noop if already enabled */ + mutex_lock_nested(dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); + + ret = snd_soc_dapm_disable_pin(arizona->dapm, "HAPTICS"); + if (ret != 0) { + dev_err(arizona->dev, "Failed to disable HAPTICS: %d\n", + ret); + mutex_unlock(dapm_mutex); + return; + } + + ret = snd_soc_dapm_sync(arizona->dapm); + if (ret != 0) { + dev_err(arizona->dev, "Failed to sync DAPM: %d\n", + ret); + mutex_unlock(dapm_mutex); + return; + } + + mutex_unlock(dapm_mutex); + + ret = regmap_update_bits(arizona->regmap, + ARIZONA_HAPTICS_CONTROL_1, + ARIZONA_HAP_CTRL_MASK, + 1 << ARIZONA_HAP_CTRL_SHIFT); + if (ret != 0) { + dev_err(arizona->dev, "Failed to stop haptics: %d\n", + ret); + return; + } + } +} + +static int arizona_haptics_play(struct input_dev *input, void *data, + struct ff_effect *effect) +{ + struct arizona_haptics *haptics = input_get_drvdata(input); + struct arizona *arizona = haptics->arizona; + + if (!arizona->dapm) { + dev_err(arizona->dev, "No DAPM context\n"); + return -EBUSY; + } + + if (effect->u.rumble.strong_magnitude) { + /* Scale the magnitude into the range the device supports */ + if (arizona->pdata.hap_act) { + haptics->intensity = + effect->u.rumble.strong_magnitude >> 9; + if (effect->direction < 0x8000) + haptics->intensity += 0x7f; + } else { + haptics->intensity = + effect->u.rumble.strong_magnitude >> 8; + } + } else { + haptics->intensity = 0; + } + + schedule_work(&haptics->work); + + return 0; +} + +static void arizona_haptics_close(struct input_dev *input) +{ + struct arizona_haptics *haptics = input_get_drvdata(input); + struct mutex *dapm_mutex = &haptics->arizona->dapm->card->dapm_mutex; + + cancel_work_sync(&haptics->work); + + mutex_lock_nested(dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); + + if (haptics->arizona->dapm) + snd_soc_dapm_disable_pin(haptics->arizona->dapm, "HAPTICS"); + + mutex_unlock(dapm_mutex); +} + +static int arizona_haptics_probe(struct platform_device *pdev) +{ + struct arizona *arizona = dev_get_drvdata(pdev->dev.parent); + struct arizona_haptics *haptics; + int ret; + + haptics = devm_kzalloc(&pdev->dev, sizeof(*haptics), GFP_KERNEL); + if (!haptics) + return -ENOMEM; + + haptics->arizona = arizona; + + ret = regmap_update_bits(arizona->regmap, ARIZONA_HAPTICS_CONTROL_1, + ARIZONA_HAP_ACT, arizona->pdata.hap_act); + if (ret != 0) { + dev_err(arizona->dev, "Failed to set haptics actuator: %d\n", + ret); + return ret; + } + + INIT_WORK(&haptics->work, arizona_haptics_work); + + haptics->input_dev = input_allocate_device(); + if (haptics->input_dev == NULL) { + dev_err(arizona->dev, "Failed to allocate input device\n"); + return -ENOMEM; + } + + input_set_drvdata(haptics->input_dev, haptics); + + haptics->input_dev->name = "arizona:haptics"; + haptics->input_dev->dev.parent = pdev->dev.parent; + haptics->input_dev->close = arizona_haptics_close; + __set_bit(FF_RUMBLE, haptics->input_dev->ffbit); + + ret = input_ff_create_memless(haptics->input_dev, NULL, + arizona_haptics_play); + if (ret < 0) { + dev_err(arizona->dev, "input_ff_create_memless() failed: %d\n", + ret); + goto err_ialloc; + } + + ret = input_register_device(haptics->input_dev); + if (ret < 0) { + dev_err(arizona->dev, "couldn't register input device: %d\n", + ret); + goto err_iff; + } + + platform_set_drvdata(pdev, haptics); + + return 0; + +err_iff: + if (haptics->input_dev) + input_ff_destroy(haptics->input_dev); +err_ialloc: + input_free_device(haptics->input_dev); + + return ret; +} + +static int arizona_haptics_remove(struct platform_device *pdev) +{ + struct arizona_haptics *haptics = platform_get_drvdata(pdev); + + input_unregister_device(haptics->input_dev); + + return 0; +} + +static struct platform_driver arizona_haptics_driver = { + .probe = arizona_haptics_probe, + .remove = arizona_haptics_remove, + .driver = { + .name = "arizona-haptics", + .owner = THIS_MODULE, + }, +}; +module_platform_driver(arizona_haptics_driver); + +MODULE_ALIAS("platform:arizona-haptics"); +MODULE_DESCRIPTION("Arizona haptics driver"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); diff --git a/drivers/input/misc/atlas_btns.c b/drivers/input/misc/atlas_btns.c index 26f13131639a..5d4402365a52 100644 --- a/drivers/input/misc/atlas_btns.c +++ b/drivers/input/misc/atlas_btns.c @@ -121,7 +121,7 @@ static int atlas_acpi_button_add(struct acpi_device *device) return err; } -static int atlas_acpi_button_remove(struct acpi_device *device, int type) +static int atlas_acpi_button_remove(struct acpi_device *device) { acpi_status status; diff --git a/drivers/input/misc/da9052_onkey.c b/drivers/input/misc/da9052_onkey.c index 630c1ce4980a..020569a499f2 100644 --- a/drivers/input/misc/da9052_onkey.c +++ b/drivers/input/misc/da9052_onkey.c @@ -24,7 +24,6 @@ struct da9052_onkey { struct da9052 *da9052; struct input_dev *input; struct delayed_work work; - unsigned int irq; }; static void da9052_onkey_query(struct da9052_onkey *onkey) @@ -76,7 +75,6 @@ static int da9052_onkey_probe(struct platform_device *pdev) struct da9052 *da9052 = dev_get_drvdata(pdev->dev.parent); struct da9052_onkey *onkey; struct input_dev *input_dev; - int irq; int error; if (!da9052) { @@ -84,13 +82,6 @@ static int da9052_onkey_probe(struct platform_device *pdev) return -EINVAL; } - irq = platform_get_irq_byname(pdev, "ONKEY"); - if (irq < 0) { - dev_err(&pdev->dev, - "Failed to get an IRQ for input device, %d\n", irq); - return -EINVAL; - } - onkey = kzalloc(sizeof(*onkey), GFP_KERNEL); input_dev = input_allocate_device(); if (!onkey || !input_dev) { @@ -101,7 +92,6 @@ static int da9052_onkey_probe(struct platform_device *pdev) onkey->input = input_dev; onkey->da9052 = da9052; - onkey->irq = irq; INIT_DELAYED_WORK(&onkey->work, da9052_onkey_work); input_dev->name = "da9052-onkey"; @@ -111,13 +101,11 @@ static int da9052_onkey_probe(struct platform_device *pdev) input_dev->evbit[0] = BIT_MASK(EV_KEY); __set_bit(KEY_POWER, input_dev->keybit); - error = request_threaded_irq(onkey->irq, NULL, da9052_onkey_irq, - IRQF_TRIGGER_LOW | IRQF_ONESHOT, - "ONKEY", onkey); + error = da9052_request_irq(onkey->da9052, DA9052_IRQ_NONKEY, "ONKEY", + da9052_onkey_irq, onkey); if (error < 0) { dev_err(onkey->da9052->dev, - "Failed to register ONKEY IRQ %d, error = %d\n", - onkey->irq, error); + "Failed to register ONKEY IRQ: %d\n", error); goto err_free_mem; } @@ -132,7 +120,7 @@ static int da9052_onkey_probe(struct platform_device *pdev) return 0; err_free_irq: - free_irq(onkey->irq, onkey); + da9052_free_irq(onkey->da9052, DA9052_IRQ_NONKEY, onkey); cancel_delayed_work_sync(&onkey->work); err_free_mem: input_free_device(input_dev); @@ -145,7 +133,7 @@ static int da9052_onkey_remove(struct platform_device *pdev) { struct da9052_onkey *onkey = platform_get_drvdata(pdev); - free_irq(onkey->irq, onkey); + da9052_free_irq(onkey->da9052, DA9052_IRQ_NONKEY, onkey); cancel_delayed_work_sync(&onkey->work); input_unregister_device(onkey->input); diff --git a/drivers/input/misc/hp_sdc_rtc.c b/drivers/input/misc/hp_sdc_rtc.c index 0b4f54265f62..2e3334b8f82d 100644 --- a/drivers/input/misc/hp_sdc_rtc.c +++ b/drivers/input/misc/hp_sdc_rtc.c @@ -109,7 +109,9 @@ static int hp_sdc_rtc_do_read_bbrtc (struct rtc_time *rtctm) if (hp_sdc_enqueue_transaction(&t)) return -1; - down_interruptible(&tsem); /* Put ourselves to sleep for results. */ + /* Put ourselves to sleep for results. */ + if (WARN_ON(down_interruptible(&tsem))) + return -1; /* Check for nonpresence of BBRTC */ if (!((tseq[83] | tseq[90] | tseq[69] | tseq[76] | @@ -176,11 +178,16 @@ static int64_t hp_sdc_rtc_read_i8042timer (uint8_t loadcmd, int numreg) t.seq = tseq; t.act.semaphore = &i8042tregs; - down_interruptible(&i8042tregs); /* Sleep if output regs in use. */ + /* Sleep if output regs in use. */ + if (WARN_ON(down_interruptible(&i8042tregs))) + return -1; if (hp_sdc_enqueue_transaction(&t)) return -1; - down_interruptible(&i8042tregs); /* Sleep until results come back. */ + /* Sleep until results come back. */ + if (WARN_ON(down_interruptible(&i8042tregs))) + return -1; + up(&i8042tregs); return (tseq[5] | @@ -276,6 +283,7 @@ static inline int hp_sdc_rtc_read_ct(struct timeval *res) { } +#if 0 /* not used yet */ /* Set the i8042 real-time clock */ static int hp_sdc_rtc_set_rt (struct timeval *setto) { @@ -386,6 +394,7 @@ static int hp_sdc_rtc_set_i8042timer (struct timeval *setto, uint8_t setcmd) } return 0; } +#endif static ssize_t hp_sdc_rtc_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { diff --git a/drivers/input/misc/max8925_onkey.c b/drivers/input/misc/max8925_onkey.c index 369a39de4ff3..f9179b2585a9 100644 --- a/drivers/input/misc/max8925_onkey.c +++ b/drivers/input/misc/max8925_onkey.c @@ -100,9 +100,6 @@ static int max8925_onkey_probe(struct platform_device *pdev) input->dev.parent = &pdev->dev; input_set_capability(input, EV_KEY, KEY_POWER); - irq[0] += chip->irq_base; - irq[1] += chip->irq_base; - error = request_threaded_irq(irq[0], NULL, max8925_onkey_handler, IRQF_ONESHOT, "onkey-down", info); if (error < 0) { diff --git a/drivers/input/serio/Kconfig b/drivers/input/serio/Kconfig index 560c243bfcaf..3ec5ef2dd443 100644 --- a/drivers/input/serio/Kconfig +++ b/drivers/input/serio/Kconfig @@ -22,7 +22,7 @@ config SERIO_I8042 tristate "i8042 PC Keyboard controller" if EXPERT || !X86 default y depends on !PARISC && (!ARM || ARCH_SHARK || FOOTBRIDGE_HOST) && \ - (!SUPERH || SH_CAYMAN) && !M68K && !BLACKFIN + (!SUPERH || SH_CAYMAN) && !M68K && !BLACKFIN && !S390 help i8042 is the chip over which the standard AT keyboard and PS/2 mouse are connected to the computer. If you use these devices, @@ -36,6 +36,7 @@ config SERIO_I8042 config SERIO_SERPORT tristate "Serial port line discipline" default y + depends on TTY help Say Y here if you plan to use an input device (mouse, joystick, tablet, 6dof) that communicates over the RS232 serial (COM) port. diff --git a/drivers/input/serio/arc_ps2.c b/drivers/input/serio/arc_ps2.c index b571eb3e4efc..c52e3e589f72 100644 --- a/drivers/input/serio/arc_ps2.c +++ b/drivers/input/serio/arc_ps2.c @@ -8,6 +8,7 @@ * Driver is originally developed by Pavel Sokolov <psokolov@synopsys.com> */ +#include <linux/err.h> #include <linux/module.h> #include <linux/interrupt.h> #include <linux/input.h> @@ -206,9 +207,9 @@ static int arc_ps2_probe(struct platform_device *pdev) return -ENOMEM; } - arc_ps2->addr = devm_request_and_ioremap(&pdev->dev, res); - if (!arc_ps2->addr) - return -EBUSY; + arc_ps2->addr = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(arc_ps2->addr)) + return PTR_ERR(arc_ps2->addr); dev_info(&pdev->dev, "irq = %d, address = 0x%p, ports = %i\n", irq, arc_ps2->addr, ARC_PS2_PORTS); diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h index d6cc77a53c7e..5f306f79da0c 100644 --- a/drivers/input/serio/i8042-x86ia64io.h +++ b/drivers/input/serio/i8042-x86ia64io.h @@ -921,6 +921,7 @@ static int __init i8042_platform_init(void) int retval; #ifdef CONFIG_X86 + u8 a20_on = 0xdf; /* Just return if pre-detection shows no i8042 controller exist */ if (!x86_platform.i8042_detect()) return -ENODEV; @@ -960,6 +961,14 @@ static int __init i8042_platform_init(void) if (dmi_check_system(i8042_dmi_dritek_table)) i8042_dritek = true; + + /* + * A20 was already enabled during early kernel init. But some buggy + * BIOSes (in MSI Laptops) require A20 to be enabled using 8042 to + * resume from S3. So we do it here and hope that nothing breaks. + */ + i8042_command(&a20_on, 0x10d1); + i8042_command(NULL, 0x00ff); /* Null command for SMM firmware */ #endif /* CONFIG_X86 */ return retval; diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 9a647ee1136a..f9a5fd89bc02 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -517,9 +517,9 @@ config TOUCHSCREEN_TOUCHWIN To compile this driver as a module, choose M here: the module will be called touchwin. -config TOUCHSCREEN_TI_TSCADC +config TOUCHSCREEN_TI_AM335X_TSC tristate "TI Touchscreen Interface" - depends on ARCH_OMAP2PLUS + depends on MFD_TI_AM335X_TSCADC help Say Y here if you have 4/5/8 wire touchscreen controller to be connected to the ADC controller on your TI AM335x SoC. @@ -527,7 +527,7 @@ config TOUCHSCREEN_TI_TSCADC If unsure, say N. To compile this driver as a module, choose M here: the - module will be called ti_tscadc. + module will be called ti_am335x_tsc. config TOUCHSCREEN_ATMEL_TSADCC tristate "Atmel Touchscreen Interface" diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 5f949c0bf82f..6bfbeab67c9f 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -51,7 +51,7 @@ obj-$(CONFIG_TOUCHSCREEN_PIXCIR) += pixcir_i2c_ts.o obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o obj-$(CONFIG_TOUCHSCREEN_ST1232) += st1232.o obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o -obj-$(CONFIG_TOUCHSCREEN_TI_TSCADC) += ti_tscadc.o +obj-$(CONFIG_TOUCHSCREEN_TI_AM335X_TSC) += ti_am335x_tsc.o obj-$(CONFIG_TOUCHSCREEN_TNETV107X) += tnetv107x-ts.o obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index d04f810cb1dd..59aa24002c7b 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -176,11 +176,17 @@ /* Define for MXT_GEN_COMMAND_T6 */ #define MXT_BOOT_VALUE 0xa5 #define MXT_BACKUP_VALUE 0x55 -#define MXT_BACKUP_TIME 25 /* msec */ -#define MXT_RESET_TIME 65 /* msec */ +#define MXT_BACKUP_TIME 50 /* msec */ +#define MXT_RESET_TIME 200 /* msec */ #define MXT_FWRESET_TIME 175 /* msec */ +/* MXT_SPT_GPIOPWM_T19 field */ +#define MXT_GPIO0_MASK 0x04 +#define MXT_GPIO1_MASK 0x08 +#define MXT_GPIO2_MASK 0x10 +#define MXT_GPIO3_MASK 0x20 + /* Command to unlock bootloader */ #define MXT_UNLOCK_CMD_MSB 0xaa #define MXT_UNLOCK_CMD_LSB 0xdc @@ -212,6 +218,8 @@ /* Touchscreen absolute values */ #define MXT_MAX_AREA 0xff +#define MXT_PIXELS_PER_MM 20 + struct mxt_info { u8 family_id; u8 variant_id; @@ -243,6 +251,8 @@ struct mxt_data { const struct mxt_platform_data *pdata; struct mxt_object *object_table; struct mxt_info info; + bool is_tp; + unsigned int irq; unsigned int max_x; unsigned int max_y; @@ -251,6 +261,7 @@ struct mxt_data { u8 T6_reportid; u8 T9_reportid_min; u8 T9_reportid_max; + u8 T19_reportid; }; static bool mxt_object_readable(unsigned int type) @@ -502,6 +513,21 @@ static int mxt_write_object(struct mxt_data *data, return mxt_write_reg(data->client, reg + offset, val); } +static void mxt_input_button(struct mxt_data *data, struct mxt_message *message) +{ + struct input_dev *input = data->input_dev; + bool button; + int i; + + /* Active-low switch */ + for (i = 0; i < MXT_NUM_GPIO; i++) { + if (data->pdata->key_map[i] == KEY_RESERVED) + continue; + button = !(message->message[0] & MXT_GPIO0_MASK << i); + input_report_key(input, data->pdata->key_map[i], button); + } +} + static void mxt_input_touchevent(struct mxt_data *data, struct mxt_message *message, int id) { @@ -585,6 +611,9 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id) int id = reportid - data->T9_reportid_min; mxt_input_touchevent(data, &message, id); update_input = true; + } else if (message.reportid == data->T19_reportid) { + mxt_input_button(data, &message); + update_input = true; } else { mxt_dump_message(dev, &message); } @@ -764,6 +793,9 @@ static int mxt_get_object_table(struct mxt_data *data) data->T9_reportid_min = min_id; data->T9_reportid_max = max_id; break; + case MXT_SPT_GPIOPWM_T19: + data->T19_reportid = min_id; + break; } } @@ -777,7 +809,7 @@ static void mxt_free_object_table(struct mxt_data *data) data->T6_reportid = 0; data->T9_reportid_min = 0; data->T9_reportid_max = 0; - + data->T19_reportid = 0; } static int mxt_initialize(struct mxt_data *data) @@ -1115,9 +1147,13 @@ static int mxt_probe(struct i2c_client *client, goto err_free_mem; } - input_dev->name = "Atmel maXTouch Touchscreen"; + data->is_tp = pdata && pdata->is_tp; + + input_dev->name = (data->is_tp) ? "Atmel maXTouch Touchpad" : + "Atmel maXTouch Touchscreen"; snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", client->adapter->nr, client->addr); + input_dev->phys = data->phys; input_dev->id.bustype = BUS_I2C; @@ -1140,6 +1176,29 @@ static int mxt_probe(struct i2c_client *client, __set_bit(EV_KEY, input_dev->evbit); __set_bit(BTN_TOUCH, input_dev->keybit); + if (data->is_tp) { + int i; + __set_bit(INPUT_PROP_POINTER, input_dev->propbit); + __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); + + for (i = 0; i < MXT_NUM_GPIO; i++) + if (pdata->key_map[i] != KEY_RESERVED) + __set_bit(pdata->key_map[i], input_dev->keybit); + + __set_bit(BTN_TOOL_FINGER, input_dev->keybit); + __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); + __set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); + __set_bit(BTN_TOOL_QUADTAP, input_dev->keybit); + __set_bit(BTN_TOOL_QUINTTAP, input_dev->keybit); + + input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_MT_POSITION_X, + MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_MT_POSITION_Y, + MXT_PIXELS_PER_MM); + } + /* For single touch */ input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0); @@ -1258,6 +1317,7 @@ static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); static const struct i2c_device_id mxt_id[] = { { "qt602240_ts", 0 }, { "atmel_mxt_ts", 0 }, + { "atmel_mxt_tp", 0 }, { "mXT224", 0 }, { } }; diff --git a/drivers/input/touchscreen/atmel_tsadcc.c b/drivers/input/touchscreen/atmel_tsadcc.c index 55092d1c5cb9..95f6785a94b0 100644 --- a/drivers/input/touchscreen/atmel_tsadcc.c +++ b/drivers/input/touchscreen/atmel_tsadcc.c @@ -22,7 +22,7 @@ #include <linux/clk.h> #include <linux/platform_device.h> #include <linux/io.h> -#include <mach/board.h> +#include <linux/platform_data/atmel.h> #include <mach/cpu.h> /* Register definitions based on AT91SAM9RL64 preliminary draft datasheet */ diff --git a/drivers/input/touchscreen/da9052_tsi.c b/drivers/input/touchscreen/da9052_tsi.c index 303966ffe1e8..8f561e22bdd4 100644 --- a/drivers/input/touchscreen/da9052_tsi.c +++ b/drivers/input/touchscreen/da9052_tsi.c @@ -27,8 +27,6 @@ struct da9052_tsi { struct input_dev *dev; struct delayed_work ts_pen_work; struct mutex mutex; - unsigned int irq_pendwn; - unsigned int irq_datardy; bool stopped; bool adc_on; }; @@ -45,8 +43,8 @@ static irqreturn_t da9052_ts_pendwn_irq(int irq, void *data) if (!tsi->stopped) { /* Mask PEN_DOWN event and unmask TSI_READY event */ - disable_irq_nosync(tsi->irq_pendwn); - enable_irq(tsi->irq_datardy); + da9052_disable_irq_nosync(tsi->da9052, DA9052_IRQ_PENDOWN); + da9052_enable_irq(tsi->da9052, DA9052_IRQ_TSIREADY); da9052_ts_adc_toggle(tsi, true); @@ -137,8 +135,8 @@ static void da9052_ts_pen_work(struct work_struct *work) return; /* Mask TSI_READY event and unmask PEN_DOWN event */ - disable_irq(tsi->irq_datardy); - enable_irq(tsi->irq_pendwn); + da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY); + da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN); } } } @@ -197,7 +195,7 @@ static int da9052_ts_input_open(struct input_dev *input_dev) mb(); /* Unmask PEN_DOWN event */ - enable_irq(tsi->irq_pendwn); + da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN); /* Enable Pen Detect Circuit */ return da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, @@ -210,11 +208,11 @@ static void da9052_ts_input_close(struct input_dev *input_dev) tsi->stopped = true; mb(); - disable_irq(tsi->irq_pendwn); + da9052_disable_irq(tsi->da9052, DA9052_IRQ_PENDOWN); cancel_delayed_work_sync(&tsi->ts_pen_work); if (tsi->adc_on) { - disable_irq(tsi->irq_datardy); + da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY); da9052_ts_adc_toggle(tsi, false); /* @@ -222,7 +220,7 @@ static void da9052_ts_input_close(struct input_dev *input_dev) * twice and we need to enable it to keep enable/disable * counter balanced. IRQ is still off though. */ - enable_irq(tsi->irq_pendwn); + da9052_enable_irq(tsi->da9052, DA9052_IRQ_PENDOWN); } /* Disable Pen Detect Circuit */ @@ -234,21 +232,12 @@ static int da9052_ts_probe(struct platform_device *pdev) struct da9052 *da9052; struct da9052_tsi *tsi; struct input_dev *input_dev; - int irq_pendwn; - int irq_datardy; int error; da9052 = dev_get_drvdata(pdev->dev.parent); if (!da9052) return -EINVAL; - irq_pendwn = platform_get_irq_byname(pdev, "PENDWN"); - irq_datardy = platform_get_irq_byname(pdev, "TSIRDY"); - if (irq_pendwn < 0 || irq_datardy < 0) { - dev_err(da9052->dev, "Unable to determine device interrupts\n"); - return -ENXIO; - } - tsi = kzalloc(sizeof(struct da9052_tsi), GFP_KERNEL); input_dev = input_allocate_device(); if (!tsi || !input_dev) { @@ -258,8 +247,6 @@ static int da9052_ts_probe(struct platform_device *pdev) tsi->da9052 = da9052; tsi->dev = input_dev; - tsi->irq_pendwn = da9052->irq_base + irq_pendwn; - tsi->irq_datardy = da9052->irq_base + irq_datardy; tsi->stopped = true; INIT_DELAYED_WORK(&tsi->ts_pen_work, da9052_ts_pen_work); @@ -287,31 +274,25 @@ static int da9052_ts_probe(struct platform_device *pdev) /* Disable ADC */ da9052_ts_adc_toggle(tsi, false); - error = request_threaded_irq(tsi->irq_pendwn, - NULL, da9052_ts_pendwn_irq, - IRQF_TRIGGER_LOW | IRQF_ONESHOT, - "PENDWN", tsi); + error = da9052_request_irq(tsi->da9052, DA9052_IRQ_PENDOWN, + "pendown-irq", da9052_ts_pendwn_irq, tsi); if (error) { dev_err(tsi->da9052->dev, - "Failed to register PENDWN IRQ %d, error = %d\n", - tsi->irq_pendwn, error); + "Failed to register PENDWN IRQ: %d\n", error); goto err_free_mem; } - error = request_threaded_irq(tsi->irq_datardy, - NULL, da9052_ts_datardy_irq, - IRQF_TRIGGER_LOW | IRQF_ONESHOT, - "TSIRDY", tsi); + error = da9052_request_irq(tsi->da9052, DA9052_IRQ_TSIREADY, + "tsiready-irq", da9052_ts_datardy_irq, tsi); if (error) { dev_err(tsi->da9052->dev, - "Failed to register TSIRDY IRQ %d, error = %d\n", - tsi->irq_datardy, error); + "Failed to register TSIRDY IRQ :%d\n", error); goto err_free_pendwn_irq; } /* Mask PEN_DOWN and TSI_READY events */ - disable_irq(tsi->irq_pendwn); - disable_irq(tsi->irq_datardy); + da9052_disable_irq(tsi->da9052, DA9052_IRQ_PENDOWN); + da9052_disable_irq(tsi->da9052, DA9052_IRQ_TSIREADY); error = da9052_configure_tsi(tsi); if (error) @@ -326,9 +307,9 @@ static int da9052_ts_probe(struct platform_device *pdev) return 0; err_free_datardy_irq: - free_irq(tsi->irq_datardy, tsi); + da9052_free_irq(tsi->da9052, DA9052_IRQ_TSIREADY, tsi); err_free_pendwn_irq: - free_irq(tsi->irq_pendwn, tsi); + da9052_free_irq(tsi->da9052, DA9052_IRQ_PENDOWN, tsi); err_free_mem: kfree(tsi); input_free_device(input_dev); @@ -342,8 +323,8 @@ static int da9052_ts_remove(struct platform_device *pdev) da9052_reg_write(tsi->da9052, DA9052_LDO9_REG, 0x19); - free_irq(tsi->irq_pendwn, tsi); - free_irq(tsi->irq_datardy, tsi); + da9052_free_irq(tsi->da9052, DA9052_IRQ_TSIREADY, tsi); + da9052_free_irq(tsi->da9052, DA9052_IRQ_PENDOWN, tsi); input_unregister_device(tsi->dev); kfree(tsi); diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c new file mode 100644 index 000000000000..51e7b87827a4 --- /dev/null +++ b/drivers/input/touchscreen/ti_am335x_tsc.c @@ -0,0 +1,398 @@ +/* + * TI Touch Screen driver + * + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ + * + * 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 version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/input.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/clk.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/input/ti_am335x_tsc.h> +#include <linux/delay.h> + +#include <linux/mfd/ti_am335x_tscadc.h> + +#define ADCFSM_STEPID 0x10 +#define SEQ_SETTLE 275 +#define MAX_12BIT ((1 << 12) - 1) + +struct titsc { + struct input_dev *input; + struct ti_tscadc_dev *mfd_tscadc; + unsigned int irq; + unsigned int wires; + unsigned int x_plate_resistance; + bool pen_down; + int steps_to_configure; +}; + +static unsigned int titsc_readl(struct titsc *ts, unsigned int reg) +{ + return readl(ts->mfd_tscadc->tscadc_base + reg); +} + +static void titsc_writel(struct titsc *tsc, unsigned int reg, + unsigned int val) +{ + writel(val, tsc->mfd_tscadc->tscadc_base + reg); +} + +static void titsc_step_config(struct titsc *ts_dev) +{ + unsigned int config; + int i, total_steps; + + /* Configure the Step registers */ + total_steps = 2 * ts_dev->steps_to_configure; + + config = STEPCONFIG_MODE_HWSYNC | + STEPCONFIG_AVG_16 | STEPCONFIG_XPP; + switch (ts_dev->wires) { + case 4: + config |= STEPCONFIG_INP_AN2 | STEPCONFIG_XNN; + break; + case 5: + config |= STEPCONFIG_YNN | + STEPCONFIG_INP_AN4 | STEPCONFIG_XNN | + STEPCONFIG_YPP; + break; + case 8: + config |= STEPCONFIG_INP_AN2 | STEPCONFIG_XNN; + break; + } + + for (i = 1; i <= ts_dev->steps_to_configure; i++) { + titsc_writel(ts_dev, REG_STEPCONFIG(i), config); + titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY); + } + + config = 0; + config = STEPCONFIG_MODE_HWSYNC | + STEPCONFIG_AVG_16 | STEPCONFIG_YNN | + STEPCONFIG_INM_ADCREFM | STEPCONFIG_FIFO1; + switch (ts_dev->wires) { + case 4: + config |= STEPCONFIG_YPP; + break; + case 5: + config |= STEPCONFIG_XPP | STEPCONFIG_INP_AN4 | + STEPCONFIG_XNP | STEPCONFIG_YPN; + break; + case 8: + config |= STEPCONFIG_YPP; + break; + } + + for (i = (ts_dev->steps_to_configure + 1); i <= total_steps; i++) { + titsc_writel(ts_dev, REG_STEPCONFIG(i), config); + titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY); + } + + config = 0; + /* Charge step configuration */ + config = STEPCONFIG_XPP | STEPCONFIG_YNN | + STEPCHARGE_RFP_XPUL | STEPCHARGE_RFM_XNUR | + STEPCHARGE_INM_AN1 | STEPCHARGE_INP_AN1; + + titsc_writel(ts_dev, REG_CHARGECONFIG, config); + titsc_writel(ts_dev, REG_CHARGEDELAY, CHARGEDLY_OPENDLY); + + config = 0; + /* Configure to calculate pressure */ + config = STEPCONFIG_MODE_HWSYNC | + STEPCONFIG_AVG_16 | STEPCONFIG_YPP | + STEPCONFIG_XNN | STEPCONFIG_INM_ADCREFM; + titsc_writel(ts_dev, REG_STEPCONFIG(total_steps + 1), config); + titsc_writel(ts_dev, REG_STEPDELAY(total_steps + 1), + STEPCONFIG_OPENDLY); + + config |= STEPCONFIG_INP_AN3 | STEPCONFIG_FIFO1; + titsc_writel(ts_dev, REG_STEPCONFIG(total_steps + 2), config); + titsc_writel(ts_dev, REG_STEPDELAY(total_steps + 2), + STEPCONFIG_OPENDLY); + + titsc_writel(ts_dev, REG_SE, STPENB_STEPENB_TC); +} + +static void titsc_read_coordinates(struct titsc *ts_dev, + unsigned int *x, unsigned int *y) +{ + unsigned int fifocount = titsc_readl(ts_dev, REG_FIFO0CNT); + unsigned int prev_val_x = ~0, prev_val_y = ~0; + unsigned int prev_diff_x = ~0, prev_diff_y = ~0; + unsigned int read, diff; + unsigned int i, channel; + + /* + * Delta filter is used to remove large variations in sampled + * values from ADC. The filter tries to predict where the next + * coordinate could be. This is done by taking a previous + * coordinate and subtracting it form current one. Further the + * algorithm compares the difference with that of a present value, + * if true the value is reported to the sub system. + */ + for (i = 0; i < fifocount - 1; i++) { + read = titsc_readl(ts_dev, REG_FIFO0); + channel = read & 0xf0000; + channel = channel >> 0x10; + if ((channel >= 0) && (channel < ts_dev->steps_to_configure)) { + read &= 0xfff; + diff = abs(read - prev_val_x); + if (diff < prev_diff_x) { + prev_diff_x = diff; + *x = read; + } + prev_val_x = read; + } + + read = titsc_readl(ts_dev, REG_FIFO1); + channel = read & 0xf0000; + channel = channel >> 0x10; + if ((channel >= ts_dev->steps_to_configure) && + (channel < (2 * ts_dev->steps_to_configure - 1))) { + read &= 0xfff; + diff = abs(read - prev_val_y); + if (diff < prev_diff_y) { + prev_diff_y = diff; + *y = read; + } + prev_val_y = read; + } + } +} + +static irqreturn_t titsc_irq(int irq, void *dev) +{ + struct titsc *ts_dev = dev; + struct input_dev *input_dev = ts_dev->input; + unsigned int status, irqclr = 0; + unsigned int x = 0, y = 0; + unsigned int z1, z2, z; + unsigned int fsm; + unsigned int fifo1count, fifo0count; + int i; + + status = titsc_readl(ts_dev, REG_IRQSTATUS); + if (status & IRQENB_FIFO0THRES) { + titsc_read_coordinates(ts_dev, &x, &y); + + z1 = titsc_readl(ts_dev, REG_FIFO0) & 0xfff; + z2 = titsc_readl(ts_dev, REG_FIFO1) & 0xfff; + + fifo1count = titsc_readl(ts_dev, REG_FIFO1CNT); + for (i = 0; i < fifo1count; i++) + titsc_readl(ts_dev, REG_FIFO1); + + fifo0count = titsc_readl(ts_dev, REG_FIFO0CNT); + for (i = 0; i < fifo0count; i++) + titsc_readl(ts_dev, REG_FIFO0); + + if (ts_dev->pen_down && z1 != 0 && z2 != 0) { + /* + * Calculate pressure using formula + * Resistance(touch) = x plate resistance * + * x postion/4096 * ((z2 / z1) - 1) + */ + z = z2 - z1; + z *= x; + z *= ts_dev->x_plate_resistance; + z /= z1; + z = (z + 2047) >> 12; + + if (z <= MAX_12BIT) { + input_report_abs(input_dev, ABS_X, x); + input_report_abs(input_dev, ABS_Y, y); + input_report_abs(input_dev, ABS_PRESSURE, z); + input_report_key(input_dev, BTN_TOUCH, 1); + input_sync(input_dev); + } + } + irqclr |= IRQENB_FIFO0THRES; + } + + /* + * Time for sequencer to settle, to read + * correct state of the sequencer. + */ + udelay(SEQ_SETTLE); + + status = titsc_readl(ts_dev, REG_RAWIRQSTATUS); + if (status & IRQENB_PENUP) { + /* Pen up event */ + fsm = titsc_readl(ts_dev, REG_ADCFSM); + if (fsm == ADCFSM_STEPID) { + ts_dev->pen_down = false; + input_report_key(input_dev, BTN_TOUCH, 0); + input_report_abs(input_dev, ABS_PRESSURE, 0); + input_sync(input_dev); + } else { + ts_dev->pen_down = true; + } + irqclr |= IRQENB_PENUP; + } + + titsc_writel(ts_dev, REG_IRQSTATUS, irqclr); + + titsc_writel(ts_dev, REG_SE, STPENB_STEPENB_TC); + return IRQ_HANDLED; +} + +/* + * The functions for inserting/removing driver as a module. + */ + +static int titsc_probe(struct platform_device *pdev) +{ + struct titsc *ts_dev; + struct input_dev *input_dev; + struct ti_tscadc_dev *tscadc_dev = pdev->dev.platform_data; + struct mfd_tscadc_board *pdata; + int err; + + pdata = tscadc_dev->dev->platform_data; + + if (!pdata) { + dev_err(&pdev->dev, "Could not find platform data\n"); + return -EINVAL; + } + + /* Allocate memory for device */ + ts_dev = kzalloc(sizeof(struct titsc), GFP_KERNEL); + input_dev = input_allocate_device(); + if (!ts_dev || !input_dev) { + dev_err(&pdev->dev, "failed to allocate memory.\n"); + err = -ENOMEM; + goto err_free_mem; + } + + tscadc_dev->tsc = ts_dev; + ts_dev->mfd_tscadc = tscadc_dev; + ts_dev->input = input_dev; + ts_dev->irq = tscadc_dev->irq; + ts_dev->wires = pdata->tsc_init->wires; + ts_dev->x_plate_resistance = pdata->tsc_init->x_plate_resistance; + ts_dev->steps_to_configure = pdata->tsc_init->steps_to_configure; + + err = request_irq(ts_dev->irq, titsc_irq, + 0, pdev->dev.driver->name, ts_dev); + if (err) { + dev_err(&pdev->dev, "failed to allocate irq.\n"); + goto err_free_mem; + } + + titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES); + titsc_step_config(ts_dev); + titsc_writel(ts_dev, REG_FIFO0THR, ts_dev->steps_to_configure); + + input_dev->name = "ti-tsc"; + 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); + + input_set_abs_params(input_dev, ABS_X, 0, MAX_12BIT, 0, 0); + input_set_abs_params(input_dev, ABS_Y, 0, MAX_12BIT, 0, 0); + input_set_abs_params(input_dev, ABS_PRESSURE, 0, MAX_12BIT, 0, 0); + + /* register to the input system */ + err = input_register_device(input_dev); + if (err) + goto err_free_irq; + + platform_set_drvdata(pdev, ts_dev); + return 0; + +err_free_irq: + free_irq(ts_dev->irq, ts_dev); +err_free_mem: + input_free_device(input_dev); + kfree(ts_dev); + return err; +} + +static int titsc_remove(struct platform_device *pdev) +{ + struct ti_tscadc_dev *tscadc_dev = pdev->dev.platform_data; + struct titsc *ts_dev = tscadc_dev->tsc; + + free_irq(ts_dev->irq, ts_dev); + + input_unregister_device(ts_dev->input); + + platform_set_drvdata(pdev, NULL); + kfree(ts_dev); + return 0; +} + +#ifdef CONFIG_PM +static int titsc_suspend(struct device *dev) +{ + struct ti_tscadc_dev *tscadc_dev = dev->platform_data; + struct titsc *ts_dev = tscadc_dev->tsc; + unsigned int idle; + + if (device_may_wakeup(tscadc_dev->dev)) { + idle = titsc_readl(ts_dev, REG_IRQENABLE); + titsc_writel(ts_dev, REG_IRQENABLE, + (idle | IRQENB_HW_PEN)); + titsc_writel(ts_dev, REG_IRQWAKEUP, IRQWKUP_ENB); + } + return 0; +} + +static int titsc_resume(struct device *dev) +{ + struct ti_tscadc_dev *tscadc_dev = dev->platform_data; + struct titsc *ts_dev = tscadc_dev->tsc; + + if (device_may_wakeup(tscadc_dev->dev)) { + titsc_writel(ts_dev, REG_IRQWAKEUP, + 0x00); + titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN); + } + titsc_step_config(ts_dev); + titsc_writel(ts_dev, REG_FIFO0THR, + ts_dev->steps_to_configure); + return 0; +} + +static const struct dev_pm_ops titsc_pm_ops = { + .suspend = titsc_suspend, + .resume = titsc_resume, +}; +#define TITSC_PM_OPS (&titsc_pm_ops) +#else +#define TITSC_PM_OPS NULL +#endif + +static struct platform_driver ti_tsc_driver = { + .probe = titsc_probe, + .remove = titsc_remove, + .driver = { + .name = "tsc", + .owner = THIS_MODULE, + .pm = TITSC_PM_OPS, + }, +}; +module_platform_driver(ti_tsc_driver); + +MODULE_DESCRIPTION("TI touchscreen controller driver"); +MODULE_AUTHOR("Rachna Patil <rachna@ti.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/ti_tscadc.c b/drivers/input/touchscreen/ti_tscadc.c deleted file mode 100644 index bcedf2e7468c..000000000000 --- a/drivers/input/touchscreen/ti_tscadc.c +++ /dev/null @@ -1,486 +0,0 @@ -/* - * TI Touch Screen driver - * - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ - * - * 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 version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - - -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/err.h> -#include <linux/module.h> -#include <linux/input.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/clk.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/input/ti_tscadc.h> -#include <linux/delay.h> - -#define REG_IRQEOI 0x020 -#define REG_RAWIRQSTATUS 0x024 -#define REG_IRQSTATUS 0x028 -#define REG_IRQENABLE 0x02C -#define REG_IRQWAKEUP 0x034 -#define REG_CTRL 0x040 -#define REG_ADCFSM 0x044 -#define REG_CLKDIV 0x04C -#define REG_SE 0x054 -#define REG_IDLECONFIG 0x058 -#define REG_CHARGECONFIG 0x05C -#define REG_CHARGEDELAY 0x060 -#define REG_STEPCONFIG(n) (0x64 + ((n - 1) * 8)) -#define REG_STEPDELAY(n) (0x68 + ((n - 1) * 8)) -#define REG_STEPCONFIG13 0x0C4 -#define REG_STEPDELAY13 0x0C8 -#define REG_STEPCONFIG14 0x0CC -#define REG_STEPDELAY14 0x0D0 -#define REG_FIFO0CNT 0xE4 -#define REG_FIFO1THR 0xF4 -#define REG_FIFO0 0x100 -#define REG_FIFO1 0x200 - -/* Register Bitfields */ -#define IRQWKUP_ENB BIT(0) -#define STPENB_STEPENB 0x7FFF -#define IRQENB_FIFO1THRES BIT(5) -#define IRQENB_PENUP BIT(9) -#define STEPCONFIG_MODE_HWSYNC 0x2 -#define STEPCONFIG_SAMPLES_AVG (1 << 4) -#define STEPCONFIG_XPP (1 << 5) -#define STEPCONFIG_XNN (1 << 6) -#define STEPCONFIG_YPP (1 << 7) -#define STEPCONFIG_YNN (1 << 8) -#define STEPCONFIG_XNP (1 << 9) -#define STEPCONFIG_YPN (1 << 10) -#define STEPCONFIG_INM (1 << 18) -#define STEPCONFIG_INP (1 << 20) -#define STEPCONFIG_INP_5 (1 << 21) -#define STEPCONFIG_FIFO1 (1 << 26) -#define STEPCONFIG_OPENDLY 0xff -#define STEPCONFIG_Z1 (3 << 19) -#define STEPIDLE_INP (1 << 22) -#define STEPCHARGE_RFP (1 << 12) -#define STEPCHARGE_INM (1 << 15) -#define STEPCHARGE_INP (1 << 19) -#define STEPCHARGE_RFM (1 << 23) -#define STEPCHARGE_DELAY 0x1 -#define CNTRLREG_TSCSSENB (1 << 0) -#define CNTRLREG_STEPID (1 << 1) -#define CNTRLREG_STEPCONFIGWRT (1 << 2) -#define CNTRLREG_4WIRE (1 << 5) -#define CNTRLREG_5WIRE (1 << 6) -#define CNTRLREG_8WIRE (3 << 5) -#define CNTRLREG_TSCENB (1 << 7) -#define ADCFSM_STEPID 0x10 - -#define SEQ_SETTLE 275 -#define ADC_CLK 3000000 -#define MAX_12BIT ((1 << 12) - 1) -#define TSCADC_DELTA_X 15 -#define TSCADC_DELTA_Y 15 - -struct tscadc { - struct input_dev *input; - struct clk *tsc_ick; - void __iomem *tsc_base; - unsigned int irq; - unsigned int wires; - unsigned int x_plate_resistance; - bool pen_down; -}; - -static unsigned int tscadc_readl(struct tscadc *ts, unsigned int reg) -{ - return readl(ts->tsc_base + reg); -} - -static void tscadc_writel(struct tscadc *tsc, unsigned int reg, - unsigned int val) -{ - writel(val, tsc->tsc_base + reg); -} - -static void tscadc_step_config(struct tscadc *ts_dev) -{ - unsigned int config; - int i; - - /* Configure the Step registers */ - - config = STEPCONFIG_MODE_HWSYNC | - STEPCONFIG_SAMPLES_AVG | STEPCONFIG_XPP; - switch (ts_dev->wires) { - case 4: - config |= STEPCONFIG_INP | STEPCONFIG_XNN; - break; - case 5: - config |= STEPCONFIG_YNN | - STEPCONFIG_INP_5 | STEPCONFIG_XNN | - STEPCONFIG_YPP; - break; - case 8: - config |= STEPCONFIG_INP | STEPCONFIG_XNN; - break; - } - - for (i = 1; i < 7; i++) { - tscadc_writel(ts_dev, REG_STEPCONFIG(i), config); - tscadc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY); - } - - config = 0; - config = STEPCONFIG_MODE_HWSYNC | - STEPCONFIG_SAMPLES_AVG | STEPCONFIG_YNN | - STEPCONFIG_INM | STEPCONFIG_FIFO1; - switch (ts_dev->wires) { - case 4: - config |= STEPCONFIG_YPP; - break; - case 5: - config |= STEPCONFIG_XPP | STEPCONFIG_INP_5 | - STEPCONFIG_XNP | STEPCONFIG_YPN; - break; - case 8: - config |= STEPCONFIG_YPP; - break; - } - - for (i = 7; i < 13; i++) { - tscadc_writel(ts_dev, REG_STEPCONFIG(i), config); - tscadc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY); - } - - config = 0; - /* Charge step configuration */ - config = STEPCONFIG_XPP | STEPCONFIG_YNN | - STEPCHARGE_RFP | STEPCHARGE_RFM | - STEPCHARGE_INM | STEPCHARGE_INP; - - tscadc_writel(ts_dev, REG_CHARGECONFIG, config); - tscadc_writel(ts_dev, REG_CHARGEDELAY, STEPCHARGE_DELAY); - - config = 0; - /* Configure to calculate pressure */ - config = STEPCONFIG_MODE_HWSYNC | - STEPCONFIG_SAMPLES_AVG | STEPCONFIG_YPP | - STEPCONFIG_XNN | STEPCONFIG_INM; - tscadc_writel(ts_dev, REG_STEPCONFIG13, config); - tscadc_writel(ts_dev, REG_STEPDELAY13, STEPCONFIG_OPENDLY); - - config |= STEPCONFIG_Z1 | STEPCONFIG_FIFO1; - tscadc_writel(ts_dev, REG_STEPCONFIG14, config); - tscadc_writel(ts_dev, REG_STEPDELAY14, STEPCONFIG_OPENDLY); - - tscadc_writel(ts_dev, REG_SE, STPENB_STEPENB); -} - -static void tscadc_idle_config(struct tscadc *ts_config) -{ - unsigned int idleconfig; - - idleconfig = STEPCONFIG_YNN | - STEPCONFIG_INM | - STEPCONFIG_YPN | STEPIDLE_INP; - tscadc_writel(ts_config, REG_IDLECONFIG, idleconfig); -} - -static void tscadc_read_coordinates(struct tscadc *ts_dev, - unsigned int *x, unsigned int *y) -{ - unsigned int fifocount = tscadc_readl(ts_dev, REG_FIFO0CNT); - unsigned int prev_val_x = ~0, prev_val_y = ~0; - unsigned int prev_diff_x = ~0, prev_diff_y = ~0; - unsigned int read, diff; - unsigned int i; - - /* - * Delta filter is used to remove large variations in sampled - * values from ADC. The filter tries to predict where the next - * coordinate could be. This is done by taking a previous - * coordinate and subtracting it form current one. Further the - * algorithm compares the difference with that of a present value, - * if true the value is reported to the sub system. - */ - for (i = 0; i < fifocount - 1; i++) { - read = tscadc_readl(ts_dev, REG_FIFO0) & 0xfff; - diff = abs(read - prev_val_x); - if (diff < prev_diff_x) { - prev_diff_x = diff; - *x = read; - } - prev_val_x = read; - - read = tscadc_readl(ts_dev, REG_FIFO1) & 0xfff; - diff = abs(read - prev_val_y); - if (diff < prev_diff_y) { - prev_diff_y = diff; - *y = read; - } - prev_val_y = read; - } -} - -static irqreturn_t tscadc_irq(int irq, void *dev) -{ - struct tscadc *ts_dev = dev; - struct input_dev *input_dev = ts_dev->input; - unsigned int status, irqclr = 0; - unsigned int x = 0, y = 0; - unsigned int z1, z2, z; - unsigned int fsm; - - status = tscadc_readl(ts_dev, REG_IRQSTATUS); - if (status & IRQENB_FIFO1THRES) { - tscadc_read_coordinates(ts_dev, &x, &y); - - z1 = tscadc_readl(ts_dev, REG_FIFO0) & 0xfff; - z2 = tscadc_readl(ts_dev, REG_FIFO1) & 0xfff; - - if (ts_dev->pen_down && z1 != 0 && z2 != 0) { - /* - * Calculate pressure using formula - * Resistance(touch) = x plate resistance * - * x postion/4096 * ((z2 / z1) - 1) - */ - z = z2 - z1; - z *= x; - z *= ts_dev->x_plate_resistance; - z /= z1; - z = (z + 2047) >> 12; - - if (z <= MAX_12BIT) { - input_report_abs(input_dev, ABS_X, x); - input_report_abs(input_dev, ABS_Y, y); - input_report_abs(input_dev, ABS_PRESSURE, z); - input_report_key(input_dev, BTN_TOUCH, 1); - input_sync(input_dev); - } - } - irqclr |= IRQENB_FIFO1THRES; - } - - /* - * Time for sequencer to settle, to read - * correct state of the sequencer. - */ - udelay(SEQ_SETTLE); - - status = tscadc_readl(ts_dev, REG_RAWIRQSTATUS); - if (status & IRQENB_PENUP) { - /* Pen up event */ - fsm = tscadc_readl(ts_dev, REG_ADCFSM); - if (fsm == ADCFSM_STEPID) { - ts_dev->pen_down = false; - input_report_key(input_dev, BTN_TOUCH, 0); - input_report_abs(input_dev, ABS_PRESSURE, 0); - input_sync(input_dev); - } else { - ts_dev->pen_down = true; - } - irqclr |= IRQENB_PENUP; - } - - tscadc_writel(ts_dev, REG_IRQSTATUS, irqclr); - /* check pending interrupts */ - tscadc_writel(ts_dev, REG_IRQEOI, 0x0); - - tscadc_writel(ts_dev, REG_SE, STPENB_STEPENB); - return IRQ_HANDLED; -} - -/* - * The functions for inserting/removing driver as a module. - */ - -static int tscadc_probe(struct platform_device *pdev) -{ - const struct tsc_data *pdata = pdev->dev.platform_data; - struct resource *res; - struct tscadc *ts_dev; - struct input_dev *input_dev; - struct clk *clk; - int err; - int clk_value, ctrl, irq; - - if (!pdata) { - dev_err(&pdev->dev, "missing platform data.\n"); - return -EINVAL; - } - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "no memory resource defined.\n"); - return -EINVAL; - } - - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "no irq ID is specified.\n"); - return -EINVAL; - } - - /* Allocate memory for device */ - ts_dev = kzalloc(sizeof(struct tscadc), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!ts_dev || !input_dev) { - dev_err(&pdev->dev, "failed to allocate memory.\n"); - err = -ENOMEM; - goto err_free_mem; - } - - ts_dev->input = input_dev; - ts_dev->irq = irq; - ts_dev->wires = pdata->wires; - ts_dev->x_plate_resistance = pdata->x_plate_resistance; - - res = request_mem_region(res->start, resource_size(res), pdev->name); - if (!res) { - dev_err(&pdev->dev, "failed to reserve registers.\n"); - err = -EBUSY; - goto err_free_mem; - } - - ts_dev->tsc_base = ioremap(res->start, resource_size(res)); - if (!ts_dev->tsc_base) { - dev_err(&pdev->dev, "failed to map registers.\n"); - err = -ENOMEM; - goto err_release_mem_region; - } - - err = request_irq(ts_dev->irq, tscadc_irq, - 0, pdev->dev.driver->name, ts_dev); - if (err) { - dev_err(&pdev->dev, "failed to allocate irq.\n"); - goto err_unmap_regs; - } - - ts_dev->tsc_ick = clk_get(&pdev->dev, "adc_tsc_ick"); - if (IS_ERR(ts_dev->tsc_ick)) { - dev_err(&pdev->dev, "failed to get TSC ick\n"); - goto err_free_irq; - } - clk_enable(ts_dev->tsc_ick); - - clk = clk_get(&pdev->dev, "adc_tsc_fck"); - if (IS_ERR(clk)) { - dev_err(&pdev->dev, "failed to get TSC fck\n"); - err = PTR_ERR(clk); - goto err_disable_clk; - } - - clk_value = clk_get_rate(clk) / ADC_CLK; - clk_put(clk); - - if (clk_value < 7) { - dev_err(&pdev->dev, "clock input less than min clock requirement\n"); - goto err_disable_clk; - } - /* CLKDIV needs to be configured to the value minus 1 */ - tscadc_writel(ts_dev, REG_CLKDIV, clk_value - 1); - - /* Enable wake-up of the SoC using touchscreen */ - tscadc_writel(ts_dev, REG_IRQWAKEUP, IRQWKUP_ENB); - - ctrl = CNTRLREG_STEPCONFIGWRT | - CNTRLREG_TSCENB | - CNTRLREG_STEPID; - switch (ts_dev->wires) { - case 4: - ctrl |= CNTRLREG_4WIRE; - break; - case 5: - ctrl |= CNTRLREG_5WIRE; - break; - case 8: - ctrl |= CNTRLREG_8WIRE; - break; - } - tscadc_writel(ts_dev, REG_CTRL, ctrl); - - tscadc_idle_config(ts_dev); - tscadc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO1THRES); - tscadc_step_config(ts_dev); - tscadc_writel(ts_dev, REG_FIFO1THR, 6); - - ctrl |= CNTRLREG_TSCSSENB; - tscadc_writel(ts_dev, REG_CTRL, ctrl); - - input_dev->name = "ti-tsc-adc"; - 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); - - input_set_abs_params(input_dev, ABS_X, 0, MAX_12BIT, 0, 0); - input_set_abs_params(input_dev, ABS_Y, 0, MAX_12BIT, 0, 0); - input_set_abs_params(input_dev, ABS_PRESSURE, 0, MAX_12BIT, 0, 0); - - /* register to the input system */ - err = input_register_device(input_dev); - if (err) - goto err_disable_clk; - - platform_set_drvdata(pdev, ts_dev); - return 0; - -err_disable_clk: - clk_disable(ts_dev->tsc_ick); - clk_put(ts_dev->tsc_ick); -err_free_irq: - free_irq(ts_dev->irq, ts_dev); -err_unmap_regs: - iounmap(ts_dev->tsc_base); -err_release_mem_region: - release_mem_region(res->start, resource_size(res)); -err_free_mem: - input_free_device(input_dev); - kfree(ts_dev); - return err; -} - -static int __devexit tscadc_remove(struct platform_device *pdev) -{ - struct tscadc *ts_dev = platform_get_drvdata(pdev); - struct resource *res; - - free_irq(ts_dev->irq, ts_dev); - - input_unregister_device(ts_dev->input); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - iounmap(ts_dev->tsc_base); - release_mem_region(res->start, resource_size(res)); - - clk_disable(ts_dev->tsc_ick); - clk_put(ts_dev->tsc_ick); - - kfree(ts_dev); - - platform_set_drvdata(pdev, NULL); - return 0; -} - -static struct platform_driver ti_tsc_driver = { - .probe = tscadc_probe, - .remove = __devexit_p(tscadc_remove), - .driver = { - .name = "tsc", - .owner = THIS_MODULE, - }, -}; -module_platform_driver(ti_tsc_driver); - -MODULE_DESCRIPTION("TI touchscreen controller driver"); -MODULE_AUTHOR("Rachna Patil <rachna@ti.com>"); -MODULE_LICENSE("GPL"); |