diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-26 11:14:21 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-26 11:14:21 -0700 |
commit | 8900d92fd666d936a7bfb4c567ac26736a414fb4 (patch) | |
tree | 19c37bab5adc8d40d825cb629edf0e8a337955a2 /drivers/iio/accel/bmi088-accel-spi.c | |
parent | c01c0716ccf5db2086d9693033472f37de96a699 (diff) | |
parent | c295d3007ff63064181befa734d9705dfc10b396 (diff) |
Merge tag 'staging-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO driver updates from Greg KH:
"Here is the big set of staging and IIO driver updates for 5.13-rc1.
Lots of little churn in here, and some larger churn as well. Major
things are:
- removal of wimax drivers, no one has this hardware anymore for this
failed "experiment".
- removal of the Google gasket driver, turns out no one wanted to
maintain it or cares about it anymore, so they asked for it to be
removed.
- comedi finally moves out of the staging directory into drivers/comedi
This is one of the oldest kernel subsystems around, being created
in the 2.0 kernel days, and was one of the first things added to
drivers/staging/ when that was created over 15 years ago.
It should have been moved out of staging a long time ago, it's well
maintained and used by loads of different devices in the real world
every day. Nice to see this finally happen.
- so many tiny coding style cleanups it's not funny.
Perfect storm of at least 2 different intern project application
deadlines combined to provide a huge number of new contributions in
this area from people learning how to do kernel development. Great
job to everyone involved here.
There's also the normal updates for IIO drivers with new IIO drivers
and updates all over that subsystem.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (907 commits)
staging: octeon: Use 'for_each_child_of_node'
Staging: rtl8723bs: rtw_xmit: fixed tabbing issue
staging: rtl8188eu: remove unused function parameters
staging: rtl8188eu: cmdThread is a task_struct
staging: rtl8188eu: remove constant variable and dead code
staging: rtl8188eu: change bLeisurePs' type to bool
staging: rtl8723bs: remove empty #ifdef block
staging: rtl8723bs: remove unused DBG_871X_LEVEL macro declarations
staging: rtl8723bs: split too long line
staging: rtl8723bs: fix indentation in if block
staging: rtl8723bs: fix code indent issue
staging: rtl8723bs: replace DBG_871X_LEVEL logs with netdev_*()
staging: rtl8192e: indent statement properly
staging: rtl8723bs: Remove led_blink_hdl() and everything related
staging: comedi: move out of staging directory
staging: rtl8723bs: remove sdio_drv_priv structure
staging: rtl8723bs: remove unused argument in function
staging: rtl8723bs: remove DBG_871X_SEL_NL macro declaration
staging: rtl8723bs: replace DBG_871X_SEL_NL with netdev_dbg()
staging: rtl8723bs: fix indentation issue introduced by long line split
...
Diffstat (limited to 'drivers/iio/accel/bmi088-accel-spi.c')
-rw-r--r-- | drivers/iio/accel/bmi088-accel-spi.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/drivers/iio/accel/bmi088-accel-spi.c b/drivers/iio/accel/bmi088-accel-spi.c new file mode 100644 index 000000000000..dd1e3f6cf211 --- /dev/null +++ b/drivers/iio/accel/bmi088-accel-spi.c @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * 3-axis accelerometer driver supporting following Bosch-Sensortec chips: + * - BMI088 + * + * Copyright (c) 2018-2020, Topic Embedded Products + */ + +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/spi/spi.h> + +#include "bmi088-accel.h" + +static int bmi088_regmap_spi_write(void *context, const void *data, size_t count) +{ + struct spi_device *spi = context; + + /* Write register is same as generic SPI */ + return spi_write(spi, data, count); +} + +static int bmi088_regmap_spi_read(void *context, const void *reg, + size_t reg_size, void *val, size_t val_size) +{ + struct spi_device *spi = context; + u8 addr[2]; + + addr[0] = *(u8 *)reg; + addr[0] |= BIT(7); /* Set RW = '1' */ + addr[1] = 0; /* Read requires a dummy byte transfer */ + + return spi_write_then_read(spi, addr, sizeof(addr), val, val_size); +} + +static struct regmap_bus bmi088_regmap_bus = { + .write = bmi088_regmap_spi_write, + .read = bmi088_regmap_spi_read, +}; + +static int bmi088_accel_probe(struct spi_device *spi) +{ + struct regmap *regmap; + const struct spi_device_id *id = spi_get_device_id(spi); + + regmap = devm_regmap_init(&spi->dev, &bmi088_regmap_bus, + spi, &bmi088_regmap_conf); + + if (IS_ERR(regmap)) { + dev_err(&spi->dev, "Failed to initialize spi regmap\n"); + return PTR_ERR(regmap); + } + + return bmi088_accel_core_probe(&spi->dev, regmap, spi->irq, id->name, + true); +} + +static int bmi088_accel_remove(struct spi_device *spi) +{ + return bmi088_accel_core_remove(&spi->dev); +} + +static const struct spi_device_id bmi088_accel_id[] = { + {"bmi088-accel", }, + {} +}; +MODULE_DEVICE_TABLE(spi, bmi088_accel_id); + +static struct spi_driver bmi088_accel_driver = { + .driver = { + .name = "bmi088_accel_spi", + .pm = &bmi088_accel_pm_ops, + }, + .probe = bmi088_accel_probe, + .remove = bmi088_accel_remove, + .id_table = bmi088_accel_id, +}; +module_spi_driver(bmi088_accel_driver); + +MODULE_AUTHOR("Niek van Agt <niek.van.agt@topicproducts.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("BMI088 accelerometer driver (SPI)"); |