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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/input/touchscreen/tsc2007.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/input/touchscreen/tsc2007.h')
-rw-r--r-- | drivers/input/touchscreen/tsc2007.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/tsc2007.h b/drivers/input/touchscreen/tsc2007.h new file mode 100644 index 000000000..69b08dd6c --- /dev/null +++ b/drivers/input/touchscreen/tsc2007.h @@ -0,0 +1,100 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* + * Copyright (c) 2008 MtekVision Co., Ltd. + * Kwangwoo Lee <kwlee@mtekvision.com> + * + * 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 + */ + +#ifndef _TSC2007_H +#define _TSC2007_H + +struct gpio_desc; + +#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; + u16 max_rt; + unsigned long poll_period; /* in jiffies */ + int fuzzx; + int fuzzy; + int fuzzz; + + struct gpio_desc *gpiod; + int irq; + + wait_queue_head_t wait; + bool stopped; + + int (*get_pendown_state)(struct device *); + void (*clear_penirq)(void); + + struct mutex mlock; +}; + +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); + +#if IS_ENABLED(CONFIG_TOUCHSCREEN_TSC2007_IIO) +/* defined in tsc2007_iio.c */ +int tsc2007_iio_configure(struct tsc2007 *ts); +#else +static inline int tsc2007_iio_configure(struct tsc2007 *ts) +{ + return 0; +} +#endif /* CONFIG_TOUCHSCREEN_TSC2007_IIO */ + +#endif /* _TSC2007_H */ |