On Sat, Nov 12, 2016 at 02:19:30PM +0000, Jonathan Cameron wrote: > On 12/11/16 14:04, Jonathan Cameron wrote: > > On 11/11/16 19:02, H. Nikolaus Schaller wrote: > >> The tsc2007 chip not only has a resistive touch screen controller but > >> also an external AUX adc imput which can be used for an ambient > >> light sensor, battery voltage monitoring or any general purpose. > >> > >> Additionally it can measure the chip temperature. > >> > >> This extension provides an iio interface for these adc channels. > >> > >> Since it is not wasting much resources and is very straightforward, > >> we simply provide all other adc channels as optional iio interfaces > >> as weel. This can be used for debugging or special applications. > >> > >> This patch also splits the tsc2007 driver in several source files: > >> tsc2007.h -- constants, structs and stubs > >> tsc2007_core.c -- functional parts of the original driver > >> tsc2007_iio.c -- the optional iio stuff > >> > >> Makefile magic allows to conditionally link the iio > >> stuff if CONFIG_IIO=y in a way that it works with > >> CONFIG_TOUCHSCREEN_TSC2007=m. > >> > > > > I ran a quick build test and it blows up in a number of ways related to > > the #ifdef CONFIG_IIO. > > > > I'm not entirely sure why but > > #if IS_ENABLED(CONFIG_IIO) works fine. > Ah, I'm being sleepy today. It's because I'm building IIO as a module > and the symbol defined would therefore be CONFIG_IIO_MODULE. > > The IS_ENABLED macro takes care of both cases. No it doesn't. Have you tried building the driver into the kernel with IIO as a module? > > > > Otherwise looks good to me > >> Signed-off-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx> > > Reviewed-by: Jonathan Cameron <jic23@xxxxxxxxxx> > >> --- > >> drivers/input/touchscreen/Makefile | 2 + > >> drivers/input/touchscreen/tsc2007.h | 118 ++++++++++++++++ > >> .../touchscreen/{tsc2007.c => tsc2007_core.c} | 119 ++++++---------- > >> drivers/input/touchscreen/tsc2007_iio.c | 152 +++++++++++++++++++++ > >> 4 files changed, 310 insertions(+), 81 deletions(-) > >> create mode 100644 drivers/input/touchscreen/tsc2007.h > >> rename drivers/input/touchscreen/{tsc2007.c => tsc2007_core.c} (85%) > >> create mode 100644 drivers/input/touchscreen/tsc2007_iio.c > >> > >> diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile > >> index 81b8645..d932e2d 100644 > >> --- a/drivers/input/touchscreen/Makefile > >> +++ b/drivers/input/touchscreen/Makefile > >> @@ -80,6 +80,8 @@ obj-$(CONFIG_TOUCHSCREEN_TSC_SERIO) += tsc40.o > >> obj-$(CONFIG_TOUCHSCREEN_TSC200X_CORE) += tsc200x-core.o > >> obj-$(CONFIG_TOUCHSCREEN_TSC2004) += tsc2004.o > >> obj-$(CONFIG_TOUCHSCREEN_TSC2005) += tsc2005.o > >> +tsc2007-y := tsc2007_core.o > >> +tsc2007-$(CONFIG_IIO) += tsc2007_iio.o > >> obj-$(CONFIG_TOUCHSCREEN_TSC2007) += tsc2007.o > >> obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o > >> obj-$(CONFIG_TOUCHSCREEN_WACOM_W8001) += wacom_w8001.o > >> diff --git a/drivers/input/touchscreen/tsc2007.h b/drivers/input/touchscreen/tsc2007.h > >> new file mode 100644 > >> index 0000000..5049bf8 > >> --- /dev/null > >> +++ b/drivers/input/touchscreen/tsc2007.h > >> @@ -0,0 +1,118 @@ > >> +/* > >> + * drivers/input/touchscreen/tsc2007.h > >> + * > >> + * Copyright (c) 2008 MtekVision Co., Ltd. > >> + * Kwangwoo Lee <kwlee@xxxxxxxxxxxxxx> > >> + * > >> + * Using code from: > >> + * - ads7846.c > >> + * Copyright (c) 2005 David Brownell > >> + * Copyright (c) 2006 Nokia Corporation > >> + * - corgi_ts.c > >> + * Copyright (C) 2004-2005 Richard Purdie > >> + * - omap_ts.[hc], ads7846.h, ts_osk.c > >> + * Copyright (C) 2002 MontaVista Software > >> + * Copyright (C) 2004 Texas Instruments > >> + * Copyright (C) 2005 Dirk Behme > >> + * > >> + * 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/input/touchscreen.h> > >> + > >> +#define TSC2007_MEASURE_TEMP0 (0x0 << 4) > >> +#define TSC2007_MEASURE_AUX (0x2 << 4) > >> +#define TSC2007_MEASURE_TEMP1 (0x4 << 4) > >> +#define TSC2007_ACTIVATE_XN (0x8 << 4) > >> +#define TSC2007_ACTIVATE_YN (0x9 << 4) > >> +#define TSC2007_ACTIVATE_YP_XN (0xa << 4) > >> +#define TSC2007_SETUP (0xb << 4) > >> +#define TSC2007_MEASURE_X (0xc << 4) > >> +#define TSC2007_MEASURE_Y (0xd << 4) > >> +#define TSC2007_MEASURE_Z1 (0xe << 4) > >> +#define TSC2007_MEASURE_Z2 (0xf << 4) > >> + > >> +#define TSC2007_POWER_OFF_IRQ_EN (0x0 << 2) > >> +#define TSC2007_ADC_ON_IRQ_DIS0 (0x1 << 2) > >> +#define TSC2007_ADC_OFF_IRQ_EN (0x2 << 2) > >> +#define TSC2007_ADC_ON_IRQ_DIS1 (0x3 << 2) > >> + > >> +#define TSC2007_12BIT (0x0 << 1) > >> +#define TSC2007_8BIT (0x1 << 1) > >> + > >> +#define MAX_12BIT ((1 << 12) - 1) > >> + > >> +#define ADC_ON_12BIT (TSC2007_12BIT | TSC2007_ADC_ON_IRQ_DIS0) > >> + > >> +#define READ_Y (ADC_ON_12BIT | TSC2007_MEASURE_Y) > >> +#define READ_Z1 (ADC_ON_12BIT | TSC2007_MEASURE_Z1) > >> +#define READ_Z2 (ADC_ON_12BIT | TSC2007_MEASURE_Z2) > >> +#define READ_X (ADC_ON_12BIT | TSC2007_MEASURE_X) > >> +#define PWRDOWN (TSC2007_12BIT | TSC2007_POWER_OFF_IRQ_EN) > >> + > >> +struct ts_event { > >> + u16 x; > >> + u16 y; > >> + u16 z1, z2; > >> +}; > >> + > >> +struct tsc2007 { > >> + struct input_dev *input; > >> + char phys[32]; > >> + > >> + struct i2c_client *client; > >> + > >> + u16 model; > >> + u16 x_plate_ohms; > >> + > >> + struct touchscreen_properties prop; > >> + > >> + bool report_resistance; > >> + u16 min_x; > >> + u16 min_y; > >> + u16 max_x; > >> + u16 max_y; > >> + u16 max_rt; > >> + unsigned long poll_period; /* in jiffies */ > >> + int fuzzx; > >> + int fuzzy; > >> + int fuzzz; > >> + > >> + unsigned int gpio; > >> + int irq; > >> + > >> + wait_queue_head_t wait; > >> + bool stopped; > >> + bool pendown; > >> + > >> + int (*get_pendown_state)(struct device *); > >> + void (*clear_penirq)(void); > >> + > >> + struct mutex mlock; > >> + struct iio_dev *iio_dev; /* optional */ > >> +}; > >> + > >> +int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd); > >> +u32 tsc2007_calculate_resistance(struct tsc2007 *tsc, > >> + struct ts_event *tc); > >> +bool tsc2007_is_pen_down(struct tsc2007 *ts); > >> + > >> +#ifdef CONFIG_IIO > >> + > >> +/* defined in tsc2007_iio.c */ > >> +int tsc2007_iio_configure(struct tsc2007 *ts); > >> +void tsc2007_iio_unconfigure(struct tsc2007 *ts); > >> + > >> +#else /* CONFIG_IIO */ > >> + > >> +static inline int tsc2007_iio_configure(struct tsc2007 *ts) > >> +{ > >> + return 0; > >> +} > >> +static inline void tsc2007_iio_unconfigure(struct tsc2007 *ts) > >> +{ > >> +} > >> + > >> +#endif /* CONFIG_IIO */ > >> diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007_core.c > >> similarity index 85% > >> rename from drivers/input/touchscreen/tsc2007.c > >> rename to drivers/input/touchscreen/tsc2007_core.c > >> index 5e3c4bf..72775ae 100644 > >> --- a/drivers/input/touchscreen/tsc2007.c > >> +++ b/drivers/input/touchscreen/tsc2007_core.c > >> @@ -27,80 +27,10 @@ > >> #include <linux/i2c.h> > >> #include <linux/i2c/tsc2007.h> > >> #include <linux/of_device.h> > >> -#include <linux/of.h> > >> #include <linux/of_gpio.h> > >> -#include <linux/input/touchscreen.h> > >> - > >> -#define TSC2007_MEASURE_TEMP0 (0x0 << 4) > >> -#define TSC2007_MEASURE_AUX (0x2 << 4) > >> -#define TSC2007_MEASURE_TEMP1 (0x4 << 4) > >> -#define TSC2007_ACTIVATE_XN (0x8 << 4) > >> -#define TSC2007_ACTIVATE_YN (0x9 << 4) > >> -#define TSC2007_ACTIVATE_YP_XN (0xa << 4) > >> -#define TSC2007_SETUP (0xb << 4) > >> -#define TSC2007_MEASURE_X (0xc << 4) > >> -#define TSC2007_MEASURE_Y (0xd << 4) > >> -#define TSC2007_MEASURE_Z1 (0xe << 4) > >> -#define TSC2007_MEASURE_Z2 (0xf << 4) > >> - > >> -#define TSC2007_POWER_OFF_IRQ_EN (0x0 << 2) > >> -#define TSC2007_ADC_ON_IRQ_DIS0 (0x1 << 2) > >> -#define TSC2007_ADC_OFF_IRQ_EN (0x2 << 2) > >> -#define TSC2007_ADC_ON_IRQ_DIS1 (0x3 << 2) > >> - > >> -#define TSC2007_12BIT (0x0 << 1) > >> -#define TSC2007_8BIT (0x1 << 1) > >> - > >> -#define MAX_12BIT ((1 << 12) - 1) > >> - > >> -#define ADC_ON_12BIT (TSC2007_12BIT | TSC2007_ADC_ON_IRQ_DIS0) > >> - > >> -#define READ_Y (ADC_ON_12BIT | TSC2007_MEASURE_Y) > >> -#define READ_Z1 (ADC_ON_12BIT | TSC2007_MEASURE_Z1) > >> -#define READ_Z2 (ADC_ON_12BIT | TSC2007_MEASURE_Z2) > >> -#define READ_X (ADC_ON_12BIT | TSC2007_MEASURE_X) > >> -#define PWRDOWN (TSC2007_12BIT | TSC2007_POWER_OFF_IRQ_EN) > >> - > >> -struct ts_event { > >> - u16 x; > >> - u16 y; > >> - u16 z1, z2; > >> -}; > >> - > >> -struct tsc2007 { > >> - struct input_dev *input; > >> - char phys[32]; > >> - > >> - struct i2c_client *client; > >> - > >> - u16 model; > >> - u16 x_plate_ohms; > >> - > >> - struct touchscreen_properties prop; > >> - > >> - bool report_resistance; > >> - u16 min_x; > >> - u16 min_y; > >> - u16 max_x; > >> - u16 max_y; > >> - u16 max_rt; > >> - unsigned long poll_period; /* in jiffies */ > >> - int fuzzx; > >> - int fuzzy; > >> - int fuzzz; > >> +#include "tsc2007.h" > >> > >> - unsigned gpio; > >> - int irq; > >> - > >> - wait_queue_head_t wait; > >> - bool stopped; > >> - bool pendown; > >> - > >> - int (*get_pendown_state)(struct device *); > >> - void (*clear_penirq)(void); > >> -}; > >> - > >> -static inline int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd) > >> +int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd) > >> { > >> s32 data; > >> u16 val; > >> @@ -121,6 +51,7 @@ static inline int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd) > >> > >> return val; > >> } > >> +EXPORT_SYMBOL(tsc2007_xfer); > >> > >> static void tsc2007_read_values(struct tsc2007 *tsc, struct ts_event *tc) > >> { > >> @@ -138,7 +69,7 @@ static void tsc2007_read_values(struct tsc2007 *tsc, struct ts_event *tc) > >> tsc2007_xfer(tsc, PWRDOWN); > >> } > >> > >> -static u32 tsc2007_calculate_resistance(struct tsc2007 *tsc, > >> +u32 tsc2007_calculate_resistance(struct tsc2007 *tsc, > >> struct ts_event *tc) > >> { > >> u32 rt = 0; > >> @@ -158,8 +89,9 @@ static u32 tsc2007_calculate_resistance(struct tsc2007 *tsc, > >> > >> return rt; > >> } > >> +EXPORT_SYMBOL(tsc2007_calculate_resistance); > >> > >> -static bool tsc2007_is_pen_down(struct tsc2007 *ts) > >> +bool tsc2007_is_pen_down(struct tsc2007 *ts) > >> { > >> /* > >> * NOTE: We can't rely on the pressure to determine the pen down > >> @@ -180,6 +112,7 @@ static bool tsc2007_is_pen_down(struct tsc2007 *ts) > >> > >> return ts->get_pendown_state(&ts->client->dev); > >> } > >> +EXPORT_SYMBOL(tsc2007_is_pen_down); > >> > >> static irqreturn_t tsc2007_soft_irq(int irq, void *handle) > >> { > >> @@ -192,7 +125,10 @@ static irqreturn_t tsc2007_soft_irq(int irq, void *handle) > >> while (!ts->stopped && tsc2007_is_pen_down(ts)) { > >> > >> /* pen is down, continue with the measurement */ > >> + > >> + mutex_lock(&ts->mlock); > >> tsc2007_read_values(ts, &tc); > >> + mutex_unlock(&ts->mlock); > >> > >> rt = tsc2007_calculate_resistance(ts, &tc); > >> > >> @@ -450,7 +386,8 @@ static void tsc2007_call_exit_platform_hw(void *data) > >> static int tsc2007_probe(struct i2c_client *client, > >> const struct i2c_device_id *id) > >> { > >> - const struct tsc2007_platform_data *pdata = dev_get_platdata(&client->dev); > >> + const struct tsc2007_platform_data *pdata = > >> + dev_get_platdata(&client->dev); > >> struct tsc2007 *ts; > >> struct input_dev *input_dev; > >> int err; > >> @@ -472,7 +409,13 @@ static int tsc2007_probe(struct i2c_client *client, > >> ts->client = client; > >> ts->irq = client->irq; > >> ts->input = input_dev; > >> + > >> + err = tsc2007_iio_configure(ts); > >> + if (err < 0) > >> + return err; > >> + > >> init_waitqueue_head(&ts->wait); > >> + mutex_init(&ts->mlock); > >> > >> snprintf(ts->phys, sizeof(ts->phys), > >> "%s/input0", dev_name(&client->dev)); > >> @@ -494,7 +437,7 @@ static int tsc2007_probe(struct i2c_client *client, > >> if (pdata) { > >> err = tsc2007_probe_pdev(client, ts, pdata, id); > >> if (err) > >> - return err; > >> + goto probe_err; > >> input_set_abs_params(input_dev, ABS_X, 0, ts->max_x-ts->min_x, > >> ts->fuzzx, 0); > >> input_set_abs_params(input_dev, ABS_Y, 0, ts->max_y-ts->min_y, > >> @@ -504,7 +447,7 @@ static int tsc2007_probe(struct i2c_client *client, > >> } else { > >> err = tsc2007_probe_dt(client, ts); > >> if (err) > >> - return err; > >> + goto probe_err; > >> } > >> > >> if (pdata) { > >> @@ -516,7 +459,7 @@ static int tsc2007_probe(struct i2c_client *client, > >> dev_err(&client->dev, > >> "Failed to register exit_platform_hw action, %d\n", > >> err); > >> - return err; > >> + goto probe_err; > >> } > >> } > >> > >> @@ -533,7 +476,7 @@ static int tsc2007_probe(struct i2c_client *client, > >> if (err) { > >> dev_err(&client->dev, "Failed to request irq %d: %d\n", > >> ts->irq, err); > >> - return err; > >> + goto probe_err; > >> } > >> > >> tsc2007_stop(ts); > >> @@ -543,17 +486,30 @@ static int tsc2007_probe(struct i2c_client *client, > >> if (err < 0) { > >> dev_err(&client->dev, > >> "Failed to setup chip: %d\n", err); > >> - return err; /* usually, chip does not respond */ > >> + goto probe_err; /* chip does not respond */ > >> } > >> > >> err = input_register_device(input_dev); > >> if (err) { > >> dev_err(&client->dev, > >> "Failed to register input device: %d\n", err); > >> - return err; > >> + goto probe_err; > >> } > >> > >> return 0; > >> + > >> +probe_err: > >> + tsc2007_iio_unconfigure(ts); > >> + return err; > >> +} > >> + > >> +static int tsc2007_remove(struct i2c_client *client) > >> +{ > >> + struct tsc2007 *ts = i2c_get_clientdata(client); > >> + > >> + tsc2007_iio_unconfigure(ts); > >> + input_unregister_device(ts->input); > >> + return 0; > >> } > >> > >> static const struct i2c_device_id tsc2007_idtable[] = { > >> @@ -578,6 +534,7 @@ static struct i2c_driver tsc2007_driver = { > >> }, > >> .id_table = tsc2007_idtable, > >> .probe = tsc2007_probe, > >> + .remove = tsc2007_remove, > >> }; > >> > >> module_i2c_driver(tsc2007_driver); > >> diff --git a/drivers/input/touchscreen/tsc2007_iio.c b/drivers/input/touchscreen/tsc2007_iio.c > >> new file mode 100644 > >> index 0000000..e492bba > >> --- /dev/null > >> +++ b/drivers/input/touchscreen/tsc2007_iio.c > >> @@ -0,0 +1,152 @@ > >> +/* > >> + * drivers/input/touchscreen/tsc2007_iio.c > >> + * > >> + * Copyright (c) 2016 Golden Delicious Comp. GmbH&Co. KG > >> + * Nikolaus Schaller <hns@xxxxxxxxxxxxx> > >> + * > >> + * 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/i2c.h> > >> +#include <linux/iio/iio.h> > >> +#include "tsc2007.h" > >> + > >> +struct tsc2007_iio { > >> + struct tsc2007 *ts; > >> +}; > >> + > >> +#define TSC2007_CHAN_IIO(_chan, _name, _type, _chan_info) \ > >> +{ \ > >> + .datasheet_name = _name, \ > >> + .type = _type, \ > >> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ > >> + BIT(_chan_info), \ > >> + .indexed = 1, \ > >> + .channel = _chan, \ > >> +} > >> + > >> +static const struct iio_chan_spec tsc2007_iio_channel[] = { > >> + TSC2007_CHAN_IIO(0, "x", IIO_VOLTAGE, IIO_CHAN_INFO_RAW), > >> + TSC2007_CHAN_IIO(1, "y", IIO_VOLTAGE, IIO_CHAN_INFO_RAW), > >> + TSC2007_CHAN_IIO(2, "z1", IIO_VOLTAGE, IIO_CHAN_INFO_RAW), > >> + TSC2007_CHAN_IIO(3, "z2", IIO_VOLTAGE, IIO_CHAN_INFO_RAW), > >> + TSC2007_CHAN_IIO(4, "adc", IIO_VOLTAGE, IIO_CHAN_INFO_RAW), > >> + TSC2007_CHAN_IIO(5, "rt", IIO_VOLTAGE, IIO_CHAN_INFO_RAW), /* Ohms? */ > >> + TSC2007_CHAN_IIO(6, "pen", IIO_PRESSURE, IIO_CHAN_INFO_RAW), > >> + TSC2007_CHAN_IIO(7, "temp0", IIO_TEMP, IIO_CHAN_INFO_RAW), > >> + TSC2007_CHAN_IIO(8, "temp1", IIO_TEMP, IIO_CHAN_INFO_RAW), > >> +}; > >> + > >> +static int tsc2007_read_raw(struct iio_dev *indio_dev, > >> + struct iio_chan_spec const *chan, int *val, int *val2, long mask) > >> +{ > >> + struct tsc2007_iio *iio = iio_priv(indio_dev); > >> + struct tsc2007 *tsc = iio->ts; > >> + int adc_chan = chan->channel; > >> + int ret = 0; > >> + > >> + if (adc_chan >= ARRAY_SIZE(tsc2007_iio_channel)) > >> + return -EINVAL; > >> + > >> + if (mask != IIO_CHAN_INFO_RAW) > >> + return -EINVAL; > >> + > >> + mutex_lock(&tsc->mlock); > >> + > >> + switch (chan->channel) { > >> + case 0: > >> + *val = tsc2007_xfer(tsc, READ_X); > >> + break; > >> + case 1: > >> + *val = tsc2007_xfer(tsc, READ_Y); > >> + break; > >> + case 2: > >> + *val = tsc2007_xfer(tsc, READ_Z1); > >> + break; > >> + case 3: > >> + *val = tsc2007_xfer(tsc, READ_Z2); > >> + break; > >> + case 4: > >> + *val = tsc2007_xfer(tsc, (ADC_ON_12BIT | TSC2007_MEASURE_AUX)); > >> + break; > >> + case 5: { > >> + struct ts_event tc; > >> + > >> + tc.x = tsc2007_xfer(tsc, READ_X); > >> + tc.z1 = tsc2007_xfer(tsc, READ_Z1); > >> + tc.z2 = tsc2007_xfer(tsc, READ_Z2); > >> + *val = tsc2007_calculate_resistance(tsc, &tc); > >> + break; > >> + } > >> + case 6: > >> + *val = tsc2007_is_pen_down(tsc); > >> + break; > >> + case 7: > >> + *val = tsc2007_xfer(tsc, > >> + (ADC_ON_12BIT | TSC2007_MEASURE_TEMP0)); > >> + break; > >> + case 8: > >> + *val = tsc2007_xfer(tsc, > >> + (ADC_ON_12BIT | TSC2007_MEASURE_TEMP1)); > >> + break; > >> + } > >> + > >> + /* Prepare for next touch reading - power down ADC, enable PENIRQ */ > >> + tsc2007_xfer(tsc, PWRDOWN); > >> + > >> + mutex_unlock(&tsc->mlock); > >> + > >> + ret = IIO_VAL_INT; > >> + > >> + return ret; > >> +} > >> + > >> +static const struct iio_info tsc2007_iio_info = { > >> + .read_raw = tsc2007_read_raw, > >> + .driver_module = THIS_MODULE, > >> +}; > >> + > >> +int tsc2007_iio_configure(struct tsc2007 *ts) > >> +{ > >> + int err; > >> + struct iio_dev *indio_dev; > >> + struct tsc2007_iio *iio; > >> + > >> + indio_dev = devm_iio_device_alloc(&ts->client->dev, > >> + sizeof(struct tsc2007_iio)); > >> + if (!indio_dev) { > >> + dev_err(&ts->client->dev, "iio_device_alloc failed\n"); > >> + return -ENOMEM; > >> + } > >> + > >> + iio = iio_priv(indio_dev); > >> + iio->ts = ts; > >> + ts->iio_dev = (void *) indio_dev; > >> + > >> + indio_dev->name = "tsc2007"; > >> + indio_dev->dev.parent = &ts->client->dev; > >> + indio_dev->info = &tsc2007_iio_info; > >> + indio_dev->modes = INDIO_DIRECT_MODE; > >> + indio_dev->channels = tsc2007_iio_channel; > >> + indio_dev->num_channels = ARRAY_SIZE(tsc2007_iio_channel); > >> + > >> + err = iio_device_register(indio_dev); > >> + if (err < 0) { > >> + dev_err(&ts->client->dev, "iio_device_register() failed: %d\n", > >> + err); > >> + return err; > >> + } > >> + > >> + return 0; > >> +} > >> +EXPORT_SYMBOL(tsc2007_iio_configure); > >> + > >> +void tsc2007_iio_unconfigure(struct tsc2007 *ts) > >> +{ > >> + struct iio_dev *indio_dev = ts->iio_dev; > >> + > >> + iio_device_unregister(indio_dev); > >> +} > >> +EXPORT_SYMBOL(tsc2007_iio_unconfigure); > >> > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-iio" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html