From 3b3ad9015e95ccad1a06e2eed1f182c8ddc36b21 Mon Sep 17 00:00:00 2001 From: Przemyslaw Marczak Date: Tue, 27 Oct 2015 13:08:01 +0100 Subject: 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 Cc: Minkyu Kang Cc: Simon Glass Signed-off-by: Minkyu Kang --- arch/arm/mach-exynos/include/mach/adc.h | 44 +++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/mach-exynos/include/mach/adc.h b/arch/arm/mach-exynos/include/mach/adc.h index a0e26d7052..9af51ab381 100644 --- a/arch/arm/mach-exynos/include/mach/adc.h +++ b/arch/arm/mach-exynos/include/mach/adc.h @@ -9,6 +9,39 @@ #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; @@ -21,6 +54,17 @@ struct s5p_adc { 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_ */ -- cgit v1.2.1