mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 06:12:58 +00:00
3b3ad9015e
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>
70 lines
1.7 KiB
C
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_ */
|