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