mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-02 00:03:45 +09:00
5decbf5300
This commit adds:
- new uclass id: UCLASS_ADC
- new uclass driver: drivers/adc/adc-uclass.c
The new uclass's API allows for ADC operation on:
* single-channel with channel selection by a number
* multti-channel with channel selection by bit mask
ADC uclass's functions:
* single-channel:
- adc_start_channel() - start channel conversion
- adc_channel_data() - get conversion data
- adc_channel_single_shot() - start/get conversion data
* multi-channel:
- adc_start_channels() - start selected channels conversion
- adc_channels_data() - get conversion data
- adc_channels_single_shot() - start/get conversion data for channels
selected by bit mask
* general:
- adc_stop() - stop the conversion
- adc_vdd_value() - positive reference Voltage value with polarity [uV]
- adc_vss_value() - negative reference Voltage value with polarity [uV]
- adc_data_mask() - conversion data bit mask
The device tree can provide below constraints/properties:
- vdd-polarity-negative: if true: Vdd = vdd-microvolts * (-1)
- vss-polarity-negative: if true: Vss = vss-microvolts * (-1)
- vdd-supply: phandle to Vdd regulator's node
- vss-supply: phandle to Vss regulator's node
And optional, checked only if the above corresponding, doesn't exist:
- vdd-microvolts: positive reference Voltage [uV]
- vss-microvolts: negative reference Voltage [uV]
Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2013 Google, Inc
|
|
*
|
|
* (C) Copyright 2012
|
|
* Pavel Herrmann <morpheus.ibis@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef _DM_UCLASS_ID_H
|
|
#define _DM_UCLASS_ID_H
|
|
|
|
/* TODO(sjg@chromium.org): this could be compile-time generated */
|
|
enum uclass_id {
|
|
/* These are used internally by driver model */
|
|
UCLASS_ROOT = 0,
|
|
UCLASS_DEMO,
|
|
UCLASS_TEST,
|
|
UCLASS_TEST_FDT,
|
|
UCLASS_TEST_BUS,
|
|
UCLASS_SPI_EMUL, /* sandbox SPI device emulator */
|
|
UCLASS_I2C_EMUL, /* sandbox I2C device emulator */
|
|
UCLASS_PCI_EMUL, /* sandbox PCI device emulator */
|
|
UCLASS_USB_EMUL, /* sandbox USB bus device emulator */
|
|
UCLASS_SIMPLE_BUS, /* bus with child devices */
|
|
|
|
/* U-Boot uclasses start here - in alphabetical order */
|
|
UCLASS_ADC, /* Analog-to-digital converter */
|
|
UCLASS_CLK, /* Clock source, e.g. used by peripherals */
|
|
UCLASS_CPU, /* CPU, typically part of an SoC */
|
|
UCLASS_CROS_EC, /* Chrome OS EC */
|
|
UCLASS_DISPLAY_PORT, /* Display port video */
|
|
UCLASS_RAM, /* RAM controller */
|
|
UCLASS_ETH, /* Ethernet device */
|
|
UCLASS_GPIO, /* Bank of general-purpose I/O pins */
|
|
UCLASS_I2C, /* I2C bus */
|
|
UCLASS_I2C_EEPROM, /* I2C EEPROM device */
|
|
UCLASS_I2C_GENERIC, /* Generic I2C device */
|
|
UCLASS_I2C_MUX, /* I2C multiplexer */
|
|
UCLASS_LED, /* Light-emitting diode (LED) */
|
|
UCLASS_LPC, /* x86 'low pin count' interface */
|
|
UCLASS_MASS_STORAGE, /* Mass storage device */
|
|
UCLASS_MISC, /* Miscellaneous device */
|
|
UCLASS_MMC, /* SD / MMC card or chip */
|
|
UCLASS_MOD_EXP, /* RSA Mod Exp device */
|
|
UCLASS_PCH, /* x86 platform controller hub */
|
|
UCLASS_PCI, /* PCI bus */
|
|
UCLASS_PCI_GENERIC, /* Generic PCI bus device */
|
|
UCLASS_PINCTRL, /* Pinctrl (pin muxing/configuration) device */
|
|
UCLASS_PINCONFIG, /* Pin configuration node device */
|
|
UCLASS_PMIC, /* PMIC I/O device */
|
|
UCLASS_REGULATOR, /* Regulator device */
|
|
UCLASS_RESET, /* Reset device */
|
|
UCLASS_REMOTEPROC, /* Remote Processor device */
|
|
UCLASS_RTC, /* Real time clock device */
|
|
UCLASS_SERIAL, /* Serial UART */
|
|
UCLASS_SPI, /* SPI bus */
|
|
UCLASS_SPI_FLASH, /* SPI flash */
|
|
UCLASS_SPI_GENERIC, /* Generic SPI flash target */
|
|
UCLASS_SYSCON, /* System configuration device */
|
|
UCLASS_THERMAL, /* Thermal sensor */
|
|
UCLASS_TIMER, /* Timer device */
|
|
UCLASS_TPM, /* Trusted Platform Module TIS interface */
|
|
UCLASS_USB, /* USB bus */
|
|
UCLASS_USB_DEV_GENERIC, /* USB generic device */
|
|
UCLASS_USB_HUB, /* USB hub */
|
|
UCLASS_VIDEO_BRIDGE, /* Video bridge, e.g. DisplayPort to LVDS */
|
|
|
|
UCLASS_COUNT,
|
|
UCLASS_INVALID = -1,
|
|
};
|
|
|
|
#endif
|