1 /* 2 * arch/arm/mach-at91/include/mach/at91_adc.h 3 * 4 * Copyright (C) SAN People 5 * 6 * Analog-to-Digital Converter (ADC) registers. 7 * Based on AT91SAM9260 datasheet revision D. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 */ 14 15 #ifndef AT91_ADC_H 16 #define AT91_ADC_H 17 18 #define AT91_ADC_CR 0x00 /* Control Register */ 19 #define AT91_ADC_SWRST (1 << 0) /* Software Reset */ 20 #define AT91_ADC_START (1 << 1) /* Start Conversion */ 21 22 #define AT91_ADC_MR 0x04 /* Mode Register */ 23 #define AT91_ADC_TRGEN (1 << 0) /* Trigger Enable */ 24 #define AT91_ADC_TRGSEL (7 << 1) /* Trigger Selection */ 25 #define AT91_ADC_TRGSEL_TC0 (0 << 1) 26 #define AT91_ADC_TRGSEL_TC1 (1 << 1) 27 #define AT91_ADC_TRGSEL_TC2 (2 << 1) 28 #define AT91_ADC_TRGSEL_EXTERNAL (6 << 1) 29 #define AT91_ADC_LOWRES (1 << 4) /* Low Resolution */ 30 #define AT91_ADC_SLEEP (1 << 5) /* Sleep Mode */ 31 #define AT91_ADC_PRESCAL (0x3f << 8) /* Prescalar Rate Selection */ 32 #define AT91_ADC_PRESCAL_(x) ((x) << 8) 33 #define AT91_ADC_STARTUP (0x1f << 16) /* Startup Up Time */ 34 #define AT91_ADC_STARTUP_(x) ((x) << 16) 35 #define AT91_ADC_SHTIM (0xf << 24) /* Sample & Hold Time */ 36 #define AT91_ADC_SHTIM_(x) ((x) << 24) 37 38 #define AT91_ADC_CHER 0x10 /* Channel Enable Register */ 39 #define AT91_ADC_CHDR 0x14 /* Channel Disable Register */ 40 #define AT91_ADC_CHSR 0x18 /* Channel Status Register */ 41 #define AT91_ADC_CH(n) (1 << (n)) /* Channel Number */ 42 43 #define AT91_ADC_SR 0x1C /* Status Register */ 44 #define AT91_ADC_EOC(n) (1 << (n)) /* End of Conversion on Channel N */ 45 #define AT91_ADC_OVRE(n) (1 << ((n) + 8))/* Overrun Error on Channel N */ 46 #define AT91_ADC_DRDY (1 << 16) /* Data Ready */ 47 #define AT91_ADC_GOVRE (1 << 17) /* General Overrun Error */ 48 #define AT91_ADC_ENDRX (1 << 18) /* End of RX Buffer */ 49 #define AT91_ADC_RXFUFF (1 << 19) /* RX Buffer Full */ 50 51 #define AT91_ADC_LCDR 0x20 /* Last Converted Data Register */ 52 #define AT91_ADC_LDATA (0x3ff) 53 54 #define AT91_ADC_IER 0x24 /* Interrupt Enable Register */ 55 #define AT91_ADC_IDR 0x28 /* Interrupt Disable Register */ 56 #define AT91_ADC_IMR 0x2C /* Interrupt Mask Register */ 57 58 #define AT91_ADC_CHR(n) (0x30 + ((n) * 4)) /* Channel Data Register N */ 59 #define AT91_ADC_DATA (0x3ff) 60 61 #endif 62