u-boot/arch/arm/mach-exynos/include/mach/adc.h
Przemyslaw Marczak 3b3ad9015e dm: adc: add Exynos54xx compatible ADC driver
This commit adds driver for Exynos54xx ADC subsystem.

The driver is implemented using driver model, amd provides
ADC uclass's methods for ADC single channel operations:
- adc_start_channel()
- adc_channel_data()
- adc_stop()

The basic parameters of ADC conversion, are:
- sample rate: 600KSPS
- output the data as average of 8 time conversion

ADC features:
- sample rate: 600KSPS
- resolution: 12-bit
- channels: 10 (analog multiplexer)

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2015-11-02 10:38:00 +09:00

70 lines
1.7 KiB
C

/*
* Copyright (C) 2010 Samsung Electronics
* Minkyu Kang <mk7.kang@samsung.com>
* MyungJoo Ham <myungjoo.ham@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ASM_ARM_ARCH_ADC_H_
#define __ASM_ARM_ARCH_ADC_H_
#define ADC_V2_CON1_SOFT_RESET (0x2 << 1)
#define ADC_V2_CON1_STC_EN 0x1
#define ADC_V2_CON2_OSEL(x) (((x) & 0x1) << 10)
#define OSEL_2S 0x0
#define OSEL_BINARY 0x1
#define ADC_V2_CON2_ESEL(x) (((x) & 0x1) << 9)
#define ESEL_ADC_EVAL_TIME_40CLK 0x0
#define ESEL_ADC_EVAL_TIME_20CLK 0x1
#define ADC_V2_CON2_HIGHF(x) (((x) & 0x1) << 8)
#define HIGHF_CONV_RATE_30KSPS 0x0
#define HIGHF_CONV_RATE_600KSPS 0x1
#define ADC_V2_CON2_C_TIME(x) (((x) & 0x7) << 4)
#define ADC_V2_CON2_CHAN_SEL_MASK 0xf
#define ADC_V2_CON2_CHAN_SEL(x) ((x) & ADC_V2_CON2_CHAN_SEL_MASK)
#define ADC_V2_GET_STATUS_FLAG(x) (((x) >> 2) & 0x1)
#define FLAG_CONV_END 0x1
#define ADC_V2_INT_DISABLE 0x0
#define ADC_V2_INT_ENABLE 0x1
#define INT_NOT_GENERATED 0x0
#define INT_GENERATED 0x1
#define ADC_V2_VERSION 0x80000008
#define ADC_V2_MAX_CHANNEL 9
/* For default 8 time convertion with sample rate 600 kSPS - 15us timeout */
#define ADC_V2_CONV_TIMEOUT_US 15
#define ADC_V2_DAT_MASK 0xfff
#ifndef __ASSEMBLY__
struct s5p_adc {
unsigned int adccon;
unsigned int adctsc;
unsigned int adcdly;
unsigned int adcdat0;
unsigned int adcdat1;
unsigned int adcupdn;
unsigned int adcclrint;
unsigned int adcmux;
unsigned int adcclrintpndnup;
};
struct exynos_adc_v2 {
unsigned int con1;
unsigned int con2;
unsigned int status;
unsigned int dat;
unsigned int int_en;
unsigned int int_status;
unsigned int reserved[2];
unsigned int version;
};
#endif
#endif /* __ASM_ARM_ARCH_ADC_H_ */