diff options
Diffstat (limited to 'kernel/drivers/input/touchscreen/tsc2005.c')
| -rw-r--r-- | kernel/drivers/input/touchscreen/tsc2005.c | 777 |
1 files changed, 19 insertions, 758 deletions
diff --git a/kernel/drivers/input/touchscreen/tsc2005.c b/kernel/drivers/input/touchscreen/tsc2005.c index 72657c579..b9f593dfd 100644 --- a/kernel/drivers/input/touchscreen/tsc2005.c +++ b/kernel/drivers/input/touchscreen/tsc2005.c @@ -2,9 +2,10 @@ * TSC2005 touchscreen driver * * Copyright (C) 2006-2010 Nokia Corporation + * Copyright (C) 2015 QWERTY Embedded Design + * Copyright (C) 2015 EMAC Inc. * - * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com> - * based on TSC2301 driver by Klaus K. Pedersen <klaus.k.pedersen@nokia.com> + * Based on original tsc2005.c by Lauri Leukkunen <lauri.leukkunen@nokia.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 @@ -15,166 +16,32 @@ * 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 - * */ -#include <linux/kernel.h> #include <linux/module.h> #include <linux/input.h> -#include <linux/input/touchscreen.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/pm.h> -#include <linux/of.h> -#include <linux/of_gpio.h> #include <linux/spi/spi.h> -#include <linux/spi/tsc2005.h> -#include <linux/regulator/consumer.h> - -/* - * The touchscreen interface operates as follows: - * - * 1) Pen is pressed against the touchscreen. - * 2) TSC2005 performs AD conversion. - * 3) After the conversion is done TSC2005 drives DAV line down. - * 4) GPIO IRQ is received and tsc2005_irq_thread() is scheduled. - * 5) tsc2005_irq_thread() queues up an spi transfer to fetch the x, y, z1, z2 - * values. - * 6) tsc2005_irq_thread() reports coordinates to input layer and sets up - * tsc2005_penup_timer() to be called after TSC2005_PENUP_TIME_MS (40ms). - * 7) When the penup timer expires, there have not been touch or DAV interrupts - * during the last 40ms which means the pen has been lifted. - * - * ESD recovery via a hardware reset is done if the TSC2005 doesn't respond - * after a configurable period (in ms) of activity. If esd_timeout is 0, the - * watchdog is disabled. - */ - -/* control byte 1 */ -#define TSC2005_CMD 0x80 -#define TSC2005_CMD_NORMAL 0x00 -#define TSC2005_CMD_STOP 0x01 -#define TSC2005_CMD_12BIT 0x04 - -/* control byte 0 */ -#define TSC2005_REG_READ 0x0001 -#define TSC2005_REG_PND0 0x0002 -#define TSC2005_REG_X 0x0000 -#define TSC2005_REG_Y 0x0008 -#define TSC2005_REG_Z1 0x0010 -#define TSC2005_REG_Z2 0x0018 -#define TSC2005_REG_TEMP_HIGH 0x0050 -#define TSC2005_REG_CFR0 0x0060 -#define TSC2005_REG_CFR1 0x0068 -#define TSC2005_REG_CFR2 0x0070 - -/* configuration register 0 */ -#define TSC2005_CFR0_PRECHARGE_276US 0x0040 -#define TSC2005_CFR0_STABTIME_1MS 0x0300 -#define TSC2005_CFR0_CLOCK_1MHZ 0x1000 -#define TSC2005_CFR0_RESOLUTION12 0x2000 -#define TSC2005_CFR0_PENMODE 0x8000 -#define TSC2005_CFR0_INITVALUE (TSC2005_CFR0_STABTIME_1MS | \ - TSC2005_CFR0_CLOCK_1MHZ | \ - TSC2005_CFR0_RESOLUTION12 | \ - TSC2005_CFR0_PRECHARGE_276US | \ - TSC2005_CFR0_PENMODE) - -/* bits common to both read and write of configuration register 0 */ -#define TSC2005_CFR0_RW_MASK 0x3fff - -/* configuration register 1 */ -#define TSC2005_CFR1_BATCHDELAY_4MS 0x0003 -#define TSC2005_CFR1_INITVALUE TSC2005_CFR1_BATCHDELAY_4MS - -/* configuration register 2 */ -#define TSC2005_CFR2_MAVE_Z 0x0004 -#define TSC2005_CFR2_MAVE_Y 0x0008 -#define TSC2005_CFR2_MAVE_X 0x0010 -#define TSC2005_CFR2_AVG_7 0x0800 -#define TSC2005_CFR2_MEDIUM_15 0x3000 -#define TSC2005_CFR2_INITVALUE (TSC2005_CFR2_MAVE_X | \ - TSC2005_CFR2_MAVE_Y | \ - TSC2005_CFR2_MAVE_Z | \ - TSC2005_CFR2_MEDIUM_15 | \ - TSC2005_CFR2_AVG_7) - -#define MAX_12BIT 0xfff -#define TSC2005_DEF_X_FUZZ 4 -#define TSC2005_DEF_Y_FUZZ 8 -#define TSC2005_DEF_P_FUZZ 2 -#define TSC2005_DEF_RESISTOR 280 - -#define TSC2005_SPI_MAX_SPEED_HZ 10000000 -#define TSC2005_PENUP_TIME_MS 40 - -struct tsc2005_spi_rd { - struct spi_transfer spi_xfer; - u32 spi_tx; - u32 spi_rx; -}; - -struct tsc2005 { - struct spi_device *spi; - - struct spi_message spi_read_msg; - struct tsc2005_spi_rd spi_x; - struct tsc2005_spi_rd spi_y; - struct tsc2005_spi_rd spi_z1; - struct tsc2005_spi_rd spi_z2; - - struct input_dev *idev; - char phys[32]; - - struct mutex mutex; - - /* raw copy of previous x,y,z */ - int in_x; - int in_y; - int in_z1; - int in_z2; - - spinlock_t lock; - struct timer_list penup_timer; - - unsigned int esd_timeout; - struct delayed_work esd_work; - unsigned long last_valid_interrupt; +#include <linux/regmap.h> +#include "tsc200x-core.h" - unsigned int x_plate_ohm; - - bool opened; - bool suspended; - - bool pen_down; - - struct regulator *vio; - - int reset_gpio; - void (*set_reset)(bool enable); -}; - -static int tsc2005_cmd(struct tsc2005 *ts, u8 cmd) +static int tsc2005_cmd(struct device *dev, u8 cmd) { - u8 tx = TSC2005_CMD | TSC2005_CMD_12BIT | cmd; + u8 tx = TSC200X_CMD | TSC200X_CMD_12BIT | cmd; struct spi_transfer xfer = { - .tx_buf = &tx, - .len = 1, - .bits_per_word = 8, + .tx_buf = &tx, + .len = 1, + .bits_per_word = 8, }; struct spi_message msg; + struct spi_device *spi = to_spi_device(dev); int error; spi_message_init(&msg); spi_message_add_tail(&xfer, &msg); - error = spi_sync(ts->spi, &msg); + error = spi_sync(spi, &msg); if (error) { - dev_err(&ts->spi->dev, "%s: failed, command: %x, error: %d\n", + dev_err(dev, "%s: failed, command: %x, spi error: %d\n", __func__, cmd, error); return error; } @@ -182,457 +49,10 @@ static int tsc2005_cmd(struct tsc2005 *ts, u8 cmd) return 0; } -static int tsc2005_write(struct tsc2005 *ts, u8 reg, u16 value) -{ - u32 tx = ((reg | TSC2005_REG_PND0) << 16) | value; - struct spi_transfer xfer = { - .tx_buf = &tx, - .len = 4, - .bits_per_word = 24, - }; - struct spi_message msg; - int error; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - - error = spi_sync(ts->spi, &msg); - if (error) { - dev_err(&ts->spi->dev, - "%s: failed, register: %x, value: %x, error: %d\n", - __func__, reg, value, error); - return error; - } - - return 0; -} - -static void tsc2005_setup_read(struct tsc2005_spi_rd *rd, u8 reg, bool last) -{ - memset(rd, 0, sizeof(*rd)); - - rd->spi_tx = (reg | TSC2005_REG_READ) << 16; - rd->spi_xfer.tx_buf = &rd->spi_tx; - rd->spi_xfer.rx_buf = &rd->spi_rx; - rd->spi_xfer.len = 4; - rd->spi_xfer.bits_per_word = 24; - rd->spi_xfer.cs_change = !last; -} - -static int tsc2005_read(struct tsc2005 *ts, u8 reg, u16 *value) -{ - struct tsc2005_spi_rd spi_rd; - struct spi_message msg; - int error; - - tsc2005_setup_read(&spi_rd, reg, true); - - spi_message_init(&msg); - spi_message_add_tail(&spi_rd.spi_xfer, &msg); - - error = spi_sync(ts->spi, &msg); - if (error) - return error; - - *value = spi_rd.spi_rx; - return 0; -} - -static void tsc2005_update_pen_state(struct tsc2005 *ts, - int x, int y, int pressure) -{ - if (pressure) { - input_report_abs(ts->idev, ABS_X, x); - input_report_abs(ts->idev, ABS_Y, y); - input_report_abs(ts->idev, ABS_PRESSURE, pressure); - if (!ts->pen_down) { - input_report_key(ts->idev, BTN_TOUCH, !!pressure); - ts->pen_down = true; - } - } else { - input_report_abs(ts->idev, ABS_PRESSURE, 0); - if (ts->pen_down) { - input_report_key(ts->idev, BTN_TOUCH, 0); - ts->pen_down = false; - } - } - input_sync(ts->idev); - dev_dbg(&ts->spi->dev, "point(%4d,%4d), pressure (%4d)\n", x, y, - pressure); -} - -static irqreturn_t tsc2005_irq_thread(int irq, void *_ts) -{ - struct tsc2005 *ts = _ts; - unsigned long flags; - unsigned int pressure; - u32 x, y; - u32 z1, z2; - int error; - - /* read the coordinates */ - error = spi_sync(ts->spi, &ts->spi_read_msg); - if (unlikely(error)) - goto out; - - x = ts->spi_x.spi_rx; - y = ts->spi_y.spi_rx; - z1 = ts->spi_z1.spi_rx; - z2 = ts->spi_z2.spi_rx; - - /* validate position */ - if (unlikely(x > MAX_12BIT || y > MAX_12BIT)) - goto out; - - /* Skip reading if the pressure components are out of range */ - if (unlikely(z1 == 0 || z2 > MAX_12BIT || z1 >= z2)) - goto out; - - /* - * Skip point if this is a pen down with the exact same values as - * the value before pen-up - that implies SPI fed us stale data - */ - if (!ts->pen_down && - ts->in_x == x && ts->in_y == y && - ts->in_z1 == z1 && ts->in_z2 == z2) { - goto out; - } - - /* - * At this point we are happy we have a valid and useful reading. - * Remember it for later comparisons. We may now begin downsampling. - */ - ts->in_x = x; - ts->in_y = y; - ts->in_z1 = z1; - ts->in_z2 = z2; - - /* Compute touch pressure resistance using equation #1 */ - pressure = x * (z2 - z1) / z1; - pressure = pressure * ts->x_plate_ohm / 4096; - if (unlikely(pressure > MAX_12BIT)) - goto out; - - spin_lock_irqsave(&ts->lock, flags); - - tsc2005_update_pen_state(ts, x, y, pressure); - mod_timer(&ts->penup_timer, - jiffies + msecs_to_jiffies(TSC2005_PENUP_TIME_MS)); - - spin_unlock_irqrestore(&ts->lock, flags); - - ts->last_valid_interrupt = jiffies; -out: - return IRQ_HANDLED; -} - -static void tsc2005_penup_timer(unsigned long data) -{ - struct tsc2005 *ts = (struct tsc2005 *)data; - unsigned long flags; - - spin_lock_irqsave(&ts->lock, flags); - tsc2005_update_pen_state(ts, 0, 0, 0); - spin_unlock_irqrestore(&ts->lock, flags); -} - -static void tsc2005_start_scan(struct tsc2005 *ts) -{ - tsc2005_write(ts, TSC2005_REG_CFR0, TSC2005_CFR0_INITVALUE); - tsc2005_write(ts, TSC2005_REG_CFR1, TSC2005_CFR1_INITVALUE); - tsc2005_write(ts, TSC2005_REG_CFR2, TSC2005_CFR2_INITVALUE); - tsc2005_cmd(ts, TSC2005_CMD_NORMAL); -} - -static void tsc2005_stop_scan(struct tsc2005 *ts) -{ - tsc2005_cmd(ts, TSC2005_CMD_STOP); -} - -static void tsc2005_set_reset(struct tsc2005 *ts, bool enable) -{ - if (ts->reset_gpio >= 0) - gpio_set_value(ts->reset_gpio, enable); - else if (ts->set_reset) - ts->set_reset(enable); -} - -/* must be called with ts->mutex held */ -static void __tsc2005_disable(struct tsc2005 *ts) -{ - tsc2005_stop_scan(ts); - - disable_irq(ts->spi->irq); - del_timer_sync(&ts->penup_timer); - - cancel_delayed_work_sync(&ts->esd_work); - - enable_irq(ts->spi->irq); -} - -/* must be called with ts->mutex held */ -static void __tsc2005_enable(struct tsc2005 *ts) -{ - tsc2005_start_scan(ts); - - if (ts->esd_timeout && (ts->set_reset || ts->reset_gpio)) { - ts->last_valid_interrupt = jiffies; - schedule_delayed_work(&ts->esd_work, - round_jiffies_relative( - msecs_to_jiffies(ts->esd_timeout))); - } - -} - -static ssize_t tsc2005_selftest_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct spi_device *spi = to_spi_device(dev); - struct tsc2005 *ts = spi_get_drvdata(spi); - u16 temp_high; - u16 temp_high_orig; - u16 temp_high_test; - bool success = true; - int error; - - mutex_lock(&ts->mutex); - - /* - * Test TSC2005 communications via temp high register. - */ - __tsc2005_disable(ts); - - error = tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high_orig); - if (error) { - dev_warn(dev, "selftest failed: read error %d\n", error); - success = false; - goto out; - } - - temp_high_test = (temp_high_orig - 1) & MAX_12BIT; - - error = tsc2005_write(ts, TSC2005_REG_TEMP_HIGH, temp_high_test); - if (error) { - dev_warn(dev, "selftest failed: write error %d\n", error); - success = false; - goto out; - } - - error = tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high); - if (error) { - dev_warn(dev, "selftest failed: read error %d after write\n", - error); - success = false; - goto out; - } - - if (temp_high != temp_high_test) { - dev_warn(dev, "selftest failed: %d != %d\n", - temp_high, temp_high_test); - success = false; - } - - /* hardware reset */ - tsc2005_set_reset(ts, false); - usleep_range(100, 500); /* only 10us required */ - tsc2005_set_reset(ts, true); - - if (!success) - goto out; - - /* test that the reset really happened */ - error = tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high); - if (error) { - dev_warn(dev, "selftest failed: read error %d after reset\n", - error); - success = false; - goto out; - } - - if (temp_high != temp_high_orig) { - dev_warn(dev, "selftest failed after reset: %d != %d\n", - temp_high, temp_high_orig); - success = false; - } - -out: - __tsc2005_enable(ts); - mutex_unlock(&ts->mutex); - - return sprintf(buf, "%d\n", success); -} - -static DEVICE_ATTR(selftest, S_IRUGO, tsc2005_selftest_show, NULL); - -static struct attribute *tsc2005_attrs[] = { - &dev_attr_selftest.attr, - NULL -}; - -static umode_t tsc2005_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - struct device *dev = container_of(kobj, struct device, kobj); - struct spi_device *spi = to_spi_device(dev); - struct tsc2005 *ts = spi_get_drvdata(spi); - umode_t mode = attr->mode; - - if (attr == &dev_attr_selftest.attr) { - if (!ts->set_reset && !ts->reset_gpio) - mode = 0; - } - - return mode; -} - -static const struct attribute_group tsc2005_attr_group = { - .is_visible = tsc2005_attr_is_visible, - .attrs = tsc2005_attrs, -}; - -static void tsc2005_esd_work(struct work_struct *work) -{ - struct tsc2005 *ts = container_of(work, struct tsc2005, esd_work.work); - int error; - u16 r; - - if (!mutex_trylock(&ts->mutex)) { - /* - * If the mutex is taken, it means that disable or enable is in - * progress. In that case just reschedule the work. If the work - * is not needed, it will be canceled by disable. - */ - goto reschedule; - } - - if (time_is_after_jiffies(ts->last_valid_interrupt + - msecs_to_jiffies(ts->esd_timeout))) - goto out; - - /* We should be able to read register without disabling interrupts. */ - error = tsc2005_read(ts, TSC2005_REG_CFR0, &r); - if (!error && - !((r ^ TSC2005_CFR0_INITVALUE) & TSC2005_CFR0_RW_MASK)) { - goto out; - } - - /* - * If we could not read our known value from configuration register 0 - * then we should reset the controller as if from power-up and start - * scanning again. - */ - dev_info(&ts->spi->dev, "TSC2005 not responding - resetting\n"); - - disable_irq(ts->spi->irq); - del_timer_sync(&ts->penup_timer); - - tsc2005_update_pen_state(ts, 0, 0, 0); - - tsc2005_set_reset(ts, false); - usleep_range(100, 500); /* only 10us required */ - tsc2005_set_reset(ts, true); - - enable_irq(ts->spi->irq); - tsc2005_start_scan(ts); - -out: - mutex_unlock(&ts->mutex); -reschedule: - /* re-arm the watchdog */ - schedule_delayed_work(&ts->esd_work, - round_jiffies_relative( - msecs_to_jiffies(ts->esd_timeout))); -} - -static int tsc2005_open(struct input_dev *input) -{ - struct tsc2005 *ts = input_get_drvdata(input); - - mutex_lock(&ts->mutex); - - if (!ts->suspended) - __tsc2005_enable(ts); - - ts->opened = true; - - mutex_unlock(&ts->mutex); - - return 0; -} - -static void tsc2005_close(struct input_dev *input) -{ - struct tsc2005 *ts = input_get_drvdata(input); - - mutex_lock(&ts->mutex); - - if (!ts->suspended) - __tsc2005_disable(ts); - - ts->opened = false; - - mutex_unlock(&ts->mutex); -} - -static void tsc2005_setup_spi_xfer(struct tsc2005 *ts) -{ - tsc2005_setup_read(&ts->spi_x, TSC2005_REG_X, false); - tsc2005_setup_read(&ts->spi_y, TSC2005_REG_Y, false); - tsc2005_setup_read(&ts->spi_z1, TSC2005_REG_Z1, false); - tsc2005_setup_read(&ts->spi_z2, TSC2005_REG_Z2, true); - - spi_message_init(&ts->spi_read_msg); - spi_message_add_tail(&ts->spi_x.spi_xfer, &ts->spi_read_msg); - spi_message_add_tail(&ts->spi_y.spi_xfer, &ts->spi_read_msg); - spi_message_add_tail(&ts->spi_z1.spi_xfer, &ts->spi_read_msg); - spi_message_add_tail(&ts->spi_z2.spi_xfer, &ts->spi_read_msg); -} - static int tsc2005_probe(struct spi_device *spi) { - const struct tsc2005_platform_data *pdata = dev_get_platdata(&spi->dev); - struct device_node *np = spi->dev.of_node; - - struct tsc2005 *ts; - struct input_dev *input_dev; - unsigned int max_x = MAX_12BIT; - unsigned int max_y = MAX_12BIT; - unsigned int max_p = MAX_12BIT; - unsigned int fudge_x = TSC2005_DEF_X_FUZZ; - unsigned int fudge_y = TSC2005_DEF_Y_FUZZ; - unsigned int fudge_p = TSC2005_DEF_P_FUZZ; - unsigned int x_plate_ohm = TSC2005_DEF_RESISTOR; - unsigned int esd_timeout; int error; - if (!np && !pdata) { - dev_err(&spi->dev, "no platform data\n"); - return -ENODEV; - } - - if (spi->irq <= 0) { - dev_err(&spi->dev, "no irq\n"); - return -ENODEV; - } - - if (pdata) { - fudge_x = pdata->ts_x_fudge; - fudge_y = pdata->ts_y_fudge; - fudge_p = pdata->ts_pressure_fudge; - max_x = pdata->ts_x_max; - max_y = pdata->ts_y_max; - max_p = pdata->ts_pressure_max; - x_plate_ohm = pdata->ts_x_plate_ohm; - esd_timeout = pdata->esd_timeout_ms; - } else { - x_plate_ohm = TSC2005_DEF_RESISTOR; - of_property_read_u32(np, "ti,x-plate-ohms", &x_plate_ohm); - esd_timeout = 0; - of_property_read_u32(np, "ti,esd-recovery-timeout-ms", - &esd_timeout); - } - spi->mode = SPI_MODE_0; spi->bits_per_word = 8; if (!spi->max_speed_hz) @@ -642,186 +62,27 @@ static int tsc2005_probe(struct spi_device *spi) if (error) return error; - ts = devm_kzalloc(&spi->dev, sizeof(*ts), GFP_KERNEL); - if (!ts) - return -ENOMEM; - - input_dev = devm_input_allocate_device(&spi->dev); - if (!input_dev) - return -ENOMEM; - - ts->spi = spi; - ts->idev = input_dev; - - ts->x_plate_ohm = x_plate_ohm; - ts->esd_timeout = esd_timeout; - - if (np) { - ts->reset_gpio = of_get_named_gpio(np, "reset-gpios", 0); - if (ts->reset_gpio == -EPROBE_DEFER) - return ts->reset_gpio; - if (ts->reset_gpio < 0) { - dev_err(&spi->dev, "error acquiring reset gpio: %d\n", - ts->reset_gpio); - return ts->reset_gpio; - } - - error = devm_gpio_request_one(&spi->dev, ts->reset_gpio, 0, - "reset-gpios"); - if (error) { - dev_err(&spi->dev, "error requesting reset gpio: %d\n", - error); - return error; - } - - ts->vio = devm_regulator_get(&spi->dev, "vio"); - if (IS_ERR(ts->vio)) { - error = PTR_ERR(ts->vio); - dev_err(&spi->dev, "vio regulator missing (%d)", error); - return error; - } - } else { - ts->reset_gpio = -1; - ts->set_reset = pdata->set_reset; - } - - mutex_init(&ts->mutex); - - spin_lock_init(&ts->lock); - setup_timer(&ts->penup_timer, tsc2005_penup_timer, (unsigned long)ts); - - INIT_DELAYED_WORK(&ts->esd_work, tsc2005_esd_work); - - tsc2005_setup_spi_xfer(ts); - - snprintf(ts->phys, sizeof(ts->phys), - "%s/input-ts", dev_name(&spi->dev)); - - input_dev->name = "TSC2005 touchscreen"; - input_dev->phys = ts->phys; - input_dev->id.bustype = BUS_SPI; - input_dev->dev.parent = &spi->dev; - input_dev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY); - input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); - - input_set_abs_params(input_dev, ABS_X, 0, max_x, fudge_x, 0); - input_set_abs_params(input_dev, ABS_Y, 0, max_y, fudge_y, 0); - input_set_abs_params(input_dev, ABS_PRESSURE, 0, max_p, fudge_p, 0); - - if (np) - touchscreen_parse_of_params(input_dev); - - input_dev->open = tsc2005_open; - input_dev->close = tsc2005_close; - - input_set_drvdata(input_dev, ts); - - /* Ensure the touchscreen is off */ - tsc2005_stop_scan(ts); - - error = devm_request_threaded_irq(&spi->dev, spi->irq, NULL, - tsc2005_irq_thread, - IRQF_TRIGGER_RISING | IRQF_ONESHOT, - "tsc2005", ts); - if (error) { - dev_err(&spi->dev, "Failed to request irq, err: %d\n", error); - return error; - } - - /* enable regulator for DT */ - if (ts->vio) { - error = regulator_enable(ts->vio); - if (error) - return error; - } - - spi_set_drvdata(spi, ts); - error = sysfs_create_group(&spi->dev.kobj, &tsc2005_attr_group); - if (error) { - dev_err(&spi->dev, - "Failed to create sysfs attributes, err: %d\n", error); - goto disable_regulator; - } - - error = input_register_device(ts->idev); - if (error) { - dev_err(&spi->dev, - "Failed to register input device, err: %d\n", error); - goto err_remove_sysfs; - } - - irq_set_irq_wake(spi->irq, 1); - return 0; - -err_remove_sysfs: - sysfs_remove_group(&spi->dev.kobj, &tsc2005_attr_group); -disable_regulator: - if (ts->vio) - regulator_disable(ts->vio); - return error; + return tsc200x_probe(&spi->dev, spi->irq, BUS_SPI, + devm_regmap_init_spi(spi, &tsc200x_regmap_config), + tsc2005_cmd); } static int tsc2005_remove(struct spi_device *spi) { - struct tsc2005 *ts = spi_get_drvdata(spi); - - sysfs_remove_group(&spi->dev.kobj, &tsc2005_attr_group); - - if (ts->vio) - regulator_disable(ts->vio); - - return 0; + return tsc200x_remove(&spi->dev); } -static int __maybe_unused tsc2005_suspend(struct device *dev) -{ - struct spi_device *spi = to_spi_device(dev); - struct tsc2005 *ts = spi_get_drvdata(spi); - - mutex_lock(&ts->mutex); - - if (!ts->suspended && ts->opened) - __tsc2005_disable(ts); - - ts->suspended = true; - - mutex_unlock(&ts->mutex); - - return 0; -} - -static int __maybe_unused tsc2005_resume(struct device *dev) -{ - struct spi_device *spi = to_spi_device(dev); - struct tsc2005 *ts = spi_get_drvdata(spi); - - mutex_lock(&ts->mutex); - - if (ts->suspended && ts->opened) - __tsc2005_enable(ts); - - ts->suspended = false; - - mutex_unlock(&ts->mutex); - - return 0; -} - -static SIMPLE_DEV_PM_OPS(tsc2005_pm_ops, tsc2005_suspend, tsc2005_resume); - static struct spi_driver tsc2005_driver = { .driver = { .name = "tsc2005", - .owner = THIS_MODULE, - .pm = &tsc2005_pm_ops, + .pm = &tsc200x_pm_ops, }, .probe = tsc2005_probe, .remove = tsc2005_remove, }; - module_spi_driver(tsc2005_driver); -MODULE_AUTHOR("Lauri Leukkunen <lauri.leukkunen@nokia.com>"); +MODULE_AUTHOR("Michael Welling <mwelling@ieee.org>"); MODULE_DESCRIPTION("TSC2005 Touchscreen Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("spi:tsc2005"); |