a09476668e
Here is the large set of char/misc and other small driver subsystem
changes for 6.1-rc1. Loads of different things in here:
- IIO driver updates, additions, and changes. Probably the largest
part of the diffstat
- habanalabs driver update with support for new hardware and features,
the second largest part of the diff.
- fpga subsystem driver updates and additions
- mhi subsystem updates
- Coresight driver updates
- gnss subsystem updates
- extcon driver updates
- icc subsystem updates
- fsi subsystem updates
- nvmem subsystem and driver updates
- misc driver updates
- speakup driver additions for new features
- lots of tiny driver updates and cleanups
All of these have been in the linux-next tree for a while with no
reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc and other driver updates from Greg KH:
"Here is the large set of char/misc and other small driver subsystem
changes for 6.1-rc1. Loads of different things in here:
- IIO driver updates, additions, and changes. Probably the largest
part of the diffstat
- habanalabs driver update with support for new hardware and
features, the second largest part of the diff.
- fpga subsystem driver updates and additions
- mhi subsystem updates
- Coresight driver updates
- gnss subsystem updates
- extcon driver updates
- icc subsystem updates
- fsi subsystem updates
- nvmem subsystem and driver updates
- misc driver updates
- speakup driver additions for new features
- lots of tiny driver updates and cleanups
All of these have been in the linux-next tree for a while with no
reported issues"
* tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (411 commits)
w1: Split memcpy() of struct cn_msg flexible array
spmi: pmic-arb: increase SPMI transaction timeout delay
spmi: pmic-arb: block access for invalid PMIC arbiter v5 SPMI writes
spmi: pmic-arb: correct duplicate APID to PPID mapping logic
spmi: pmic-arb: add support to dispatch interrupt based on IRQ status
spmi: pmic-arb: check apid against limits before calling irq handler
spmi: pmic-arb: do not ack and clear peripheral interrupts in cleanup_irq
spmi: pmic-arb: handle spurious interrupt
spmi: pmic-arb: add a print in cleanup_irq
drivers: spmi: Directly use ida_alloc()/free()
MAINTAINERS: add TI ECAP driver info
counter: ti-ecap-capture: capture driver support for ECAP
Documentation: ABI: sysfs-bus-counter: add frequency & num_overflows items
dt-bindings: counter: add ti,am62-ecap-capture.yaml
counter: Introduce the COUNTER_COMP_ARRAY component type
counter: Consolidate Counter extension sysfs attribute creation
counter: Introduce the Count capture component
counter: 104-quad-8: Add Signal polarity component
counter: Introduce the Signal polarity component
counter: interrupt-cnt: Implement watch_validate callback
...
151 lines
3.5 KiB
C
151 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* AD5593R Digital <-> Analog converters driver
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*
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* Copyright 2015-2016 Analog Devices Inc.
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* Author: Paul Cercueil <paul.cercueil@analog.com>
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*/
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#include "ad5592r-base.h"
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#include <linux/bitops.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <asm/unaligned.h>
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#define AD5593R_MODE_CONF (0 << 4)
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#define AD5593R_MODE_DAC_WRITE (1 << 4)
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#define AD5593R_MODE_ADC_READBACK (4 << 4)
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#define AD5593R_MODE_DAC_READBACK (5 << 4)
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#define AD5593R_MODE_GPIO_READBACK (6 << 4)
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#define AD5593R_MODE_REG_READBACK (7 << 4)
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static int ad5593r_read_word(struct i2c_client *i2c, u8 reg, u16 *value)
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{
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int ret;
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u8 buf[2];
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ret = i2c_smbus_write_byte(i2c, reg);
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if (ret < 0)
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return ret;
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ret = i2c_master_recv(i2c, buf, sizeof(buf));
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if (ret < 0)
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return ret;
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*value = get_unaligned_be16(buf);
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return 0;
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}
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static int ad5593r_write_dac(struct ad5592r_state *st, unsigned chan, u16 value)
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{
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struct i2c_client *i2c = to_i2c_client(st->dev);
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return i2c_smbus_write_word_swapped(i2c,
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AD5593R_MODE_DAC_WRITE | chan, value);
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}
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static int ad5593r_read_adc(struct ad5592r_state *st, unsigned chan, u16 *value)
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{
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struct i2c_client *i2c = to_i2c_client(st->dev);
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s32 val;
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val = i2c_smbus_write_word_swapped(i2c,
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AD5593R_MODE_CONF | AD5592R_REG_ADC_SEQ, BIT(chan));
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if (val < 0)
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return (int) val;
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return ad5593r_read_word(i2c, AD5593R_MODE_ADC_READBACK, value);
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}
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static int ad5593r_reg_write(struct ad5592r_state *st, u8 reg, u16 value)
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{
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struct i2c_client *i2c = to_i2c_client(st->dev);
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return i2c_smbus_write_word_swapped(i2c,
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AD5593R_MODE_CONF | reg, value);
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}
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static int ad5593r_reg_read(struct ad5592r_state *st, u8 reg, u16 *value)
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{
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struct i2c_client *i2c = to_i2c_client(st->dev);
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return ad5593r_read_word(i2c, AD5593R_MODE_REG_READBACK | reg, value);
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}
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static int ad5593r_gpio_read(struct ad5592r_state *st, u8 *value)
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{
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struct i2c_client *i2c = to_i2c_client(st->dev);
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u16 val;
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int ret;
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ret = ad5593r_read_word(i2c, AD5593R_MODE_GPIO_READBACK, &val);
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if (ret)
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return ret;
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*value = (u8) val;
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return 0;
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}
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static const struct ad5592r_rw_ops ad5593r_rw_ops = {
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.write_dac = ad5593r_write_dac,
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.read_adc = ad5593r_read_adc,
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.reg_write = ad5593r_reg_write,
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.reg_read = ad5593r_reg_read,
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.gpio_read = ad5593r_gpio_read,
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};
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static int ad5593r_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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if (!i2c_check_functionality(i2c->adapter,
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I2C_FUNC_SMBUS_BYTE | I2C_FUNC_I2C))
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return -EOPNOTSUPP;
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return ad5592r_probe(&i2c->dev, id->name, &ad5593r_rw_ops);
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}
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static void ad5593r_i2c_remove(struct i2c_client *i2c)
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{
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ad5592r_remove(&i2c->dev);
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}
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static const struct i2c_device_id ad5593r_i2c_ids[] = {
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{ .name = "ad5593r", },
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{},
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};
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MODULE_DEVICE_TABLE(i2c, ad5593r_i2c_ids);
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static const struct of_device_id ad5593r_of_match[] = {
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{ .compatible = "adi,ad5593r", },
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{},
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};
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MODULE_DEVICE_TABLE(of, ad5593r_of_match);
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static const struct acpi_device_id ad5593r_acpi_match[] = {
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{"ADS5593", },
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{ },
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};
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MODULE_DEVICE_TABLE(acpi, ad5593r_acpi_match);
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static struct i2c_driver ad5593r_driver = {
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.driver = {
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.name = "ad5593r",
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.of_match_table = ad5593r_of_match,
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.acpi_match_table = ad5593r_acpi_match,
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},
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.probe = ad5593r_i2c_probe,
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.remove = ad5593r_i2c_remove,
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.id_table = ad5593r_i2c_ids,
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};
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module_i2c_driver(ad5593r_driver);
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MODULE_AUTHOR("Paul Cercueil <paul.cercueil@analog.com>");
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MODULE_DESCRIPTION("Analog Devices AD5593R multi-channel converters");
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MODULE_LICENSE("GPL v2");
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MODULE_IMPORT_NS(IIO_AD5592R);
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