nuttx/drivers
Jorge Guzman e884b6c3c8 input/gt9xx: fix register write and no-contact read
Two defects keep the driver from reporting touches on a board that
cannot use the interrupt line.

The register write built two messages joined by I2C_M_NOSTART.  That
puts the same bytes on the wire as a single three byte message, but
resuming a transfer without a start condition is optional, and a
controller that does not implement it fails the transfer.  On the
ESP32-P4 every write returned -ETIMEDOUT, so the buffer status clear
at 0x814E never reached the controller and gt9xx_read_touch_data()
returned an error for every read.  Send the register address and the
value as a single message.

read() returned a full struct touch_sample_s even when the controller
reported no contact, with npoints set to zero.  A caller that judges
the read by its return value takes that for valid data: the LVGL
touchscreen driver reads a second sample to decide whether to keep
reading, always gets one, so it sets continue_reading on every pass
and lv_indev_read() never returns.  The display then stops refreshing
after the first frame while the touch reads spin.  Return -EAGAIN when
there is no contact and the file was opened with O_NONBLOCK, which is
what the touchscreen upper half does in the same situation.  A
blocking reader keeps the previous behaviour.

While here, add the blank line after the declaration in gt9xx_poll() that
nxstyle asks for.  It predates this change, but the CI runs checkpatch over
every file a commit touches, so it has to go.

Signed-off-by: Jorge Guzman <jorge.gzm@gmail.com>
2026-08-31 16:16:21 +08:00
..
1wire drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-07-13 12:08:01 +02:00
aie drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-07-13 12:08:01 +02:00
analog drivers/analog: add MCP445X potentiometer support 2026-08-08 18:37:08 +08:00
audio drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-07-13 12:08:01 +02:00
bch drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-07-13 12:08:01 +02:00
can drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-07-13 12:08:01 +02:00
clk !include/fcntl.h: align open flags with Linux values 2026-06-30 13:43:44 +08:00
contactless drivers/contactless: fix uninitialized uid leak in mfrc522_read 2026-07-13 19:50:57 +08:00
coresight drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
crypto drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-07-13 12:08:01 +02:00
devfreq drivers/devfreq: add ondemand governor build support 2026-08-08 15:23:54 -03:00
devicetree include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
dma drivers: migrate to SPDX identifier 2024-11-06 18:02:25 +08:00
dummy drivers: migrate to SPDX identifier 2024-11-06 18:02:25 +08:00
eeprom drivers/eeprom: add 24CW160 support 2026-08-06 12:39:36 +02:00
efuse drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-07-13 12:08:01 +02:00
i2c drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-07-13 12:08:01 +02:00
i2s drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-07-13 12:08:01 +02:00
i3c nuttx/atomic: replace atomic_fetch_xxx with atomic_xxx just like zephyr 2026-08-24 13:20:45 +08:00
input input/gt9xx: fix register write and no-contact read 2026-08-31 16:16:21 +08:00
ioexpander ioexpander/ch422g: add a driver for the WCH CH422G I/O 2026-08-24 09:39:58 +02:00
ipcc drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
lcd drivers/lcd: honour the LCD_APA102_* settings in the apa102 LCD driver 2026-08-13 09:54:26 -03:00
leds drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
loop drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
math drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
misc libs/libc: Fix divide-by-zero in stat() with large filesystem block sizes 2026-07-16 23:37:22 +08:00
mmcsd drivers/mmcsd: Switch SD cards into high speed. 2026-08-18 09:38:45 +08:00
modem drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
motor drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
mtd drivers/mtd: add MX25UW25645G support 2026-08-19 19:16:00 +02:00
net nuttx/atomic: replace atomic_fetch_xxx with atomic_xxx just like zephyr 2026-08-24 13:20:45 +08:00
note nuttx/atomic: replace atomic_fetch_xxx with atomic_xxx just like zephyr 2026-08-24 13:20:45 +08:00
pci drivers/pci/pci.c: fix nxstyle issues 2026-08-25 01:40:32 +08:00
pinctrl drivers/pinctrl: Add pad read-back and a procfs entry. 2026-08-21 20:04:59 +08:00
pipes drivers/: Multiple Drivers Are Registered With World Writable Part 3 2026-07-16 09:49:07 -03:00
power drivers/power: Describe the regulators through procfs. 2026-08-18 17:28:02 +08:00
rc drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
regmap include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
reset nuttx/atomic: replace atomic_fetch_xxx with atomic_xxx just like zephyr 2026-08-24 13:20:45 +08:00
rf drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
rpmsg nuttx/atomic: replace atomic_fetch_xxx with atomic_xxx just like zephyr 2026-08-24 13:20:45 +08:00
rptun drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
segger cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
sensors drivers/sensors: add LSM6DS3TR-C uORB driver for the XIAO ESP32-S3 2026-08-29 11:11:14 -03:00
serial drivers/serial: correct the USART9 console label 2026-08-27 01:01:51 +08:00
spi drivers/spi/ice40: fix operator precedence in final clock cycle count 2026-07-20 17:05:01 +08:00
syslog syslog/ramlog: Survive writes made before the OS is ready. 2026-08-08 15:20:54 -03:00
thermal drivers/thermal: Cool a devfreq device instead of a cpufreq policy. 2026-08-18 09:46:47 -03:00
timers drivers/timers: Add a PCF8563 RTC driver. 2026-08-18 09:29:16 -03:00
usbdev drivers/usbdev/cdcacm: serialize the TX ring drain with the class spinlock 2026-08-09 02:04:26 +08:00
usbhost drivers/usbhost: Separate the xHCI driver from the PCI bus. 2026-08-18 09:35:23 -03:00
usbmisc drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
usbmonitor include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
usrsock drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
vhost include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
video drivers/video: zero message on MIPI DSI driver 2026-07-24 20:57:57 -03:00
virtio drivers/input: partial fix of indistinguishable ASCII and special keycodes 2026-07-29 22:51:15 -03:00
wireless nuttx/atomic: replace atomic_fetch_xxx with atomic_xxx just like zephyr 2026-08-24 13:20:45 +08:00
.gitignore build: Remve the unnecessary .gitignore 2020-05-23 18:00:40 +01:00
CMakeLists.txt drivers: migrate to SPDX identifier 2024-11-06 18:02:25 +08:00
drivers_initialize.c driver/devfreq: add procfs for devfreq 2026-08-08 15:23:54 -03:00
Kconfig driver/devfreq: DVFS framework for devices 2026-08-08 15:23:54 -03:00
Makefile driver/devfreq: DVFS framework for devices 2026-08-08 15:23:54 -03:00