[ARM] 4350/1: AT91: Hardware header for ADC peripheral

Definitions for Analog-to-Digital Converter (ADC) found on the Atmel
AT91SAM9260 processor.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 61 insertions, 0 deletions

diff --git a/include/asm-arm/arch-at91/at91_adc.h b/include/asm-arm/arch-at91/at91_adc.h
new file mode 100644
index 000000000000..1ed66eaaf83a
--- /dev/null
+++ b/include/asm-arm/arch-at91/at91_adc.h
@@ -0,0 +1,61 @@
+/*
+ * include/asm-arm/arch-at91/at91_adc.h
+ *
+ * Copyright (C) SAN People
+ *
+ * Analog-to-Digital Converter (ADC) registers.
+ * Based on AT91SAM9260 datasheet revision D.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef AT91_ADC_H
+#define AT91_ADC_H
+
+#define AT91_ADC_CR             0x00            /* Control Register */
+#define         AT91_ADC_SWRST          (1 << 0)        /* Software Reset */
+#define         AT91_ADC_START          (1 << 1)        /* Start Conversion */
+
+#define AT91_ADC_MR             0x04            /* Mode Register */
+#define         AT91_ADC_TRGEN          (1 << 0)        /* Trigger Enable */
+#define         AT91_ADC_TRGSEL         (7 << 1)        /* Trigger Selection */
+#define                 AT91_ADC_TRGSEL_TC0             (0 << 1)
+#define                 AT91_ADC_TRGSEL_TC1             (1 << 1)
+#define                 AT91_ADC_TRGSEL_TC2             (2 << 1)
+#define                 AT91_ADC_TRGSEL_EXTERNAL        (6 << 1)
+#define         AT91_ADC_LOWRES         (1 << 4)        /* Low Resolution */
+#define         AT91_ADC_SLEEP          (1 << 5)        /* Sleep Mode */
+#define         AT91_ADC_PRESCAL        (0x3f << 8)     /* Prescalar Rate Selection */
+#define                 AT91_ADC_PRESCAL_(x)    ((x) << 8)
+#define         AT91_ADC_STARTUP        (0x1f << 16)    /* Startup Up Time */
+#define                 AT91_ADC_STARTUP_(x)    ((x) << 16)
+#define         AT91_ADC_SHTIM          (0xf  << 24)    /* Sample & Hold Time */
+#define                 AT91_ADC_SHTIM_(x)      ((x) << 24)
+
+#define AT91_ADC_CHER           0x10            /* Channel Enable Register */
+#define AT91_ADC_CHDR           0x14            /* Channel Disable Register */
+#define AT91_ADC_CHSR           0x18            /* Channel Status Register */
+#define         AT91_ADC_CH(n)          (1 << (n))      /* Channel Number */
+
+#define AT91_ADC_SR             0x1C            /* Status Register */
+#define         AT91_ADC_EOC(n)         (1 << (n))      /* End of Conversion on Channel N */
+#define         AT91_ADC_OVRE(n)        (1 << ((n) + 8))/* Overrun Error on Channel N */
+#define         AT91_ADC_DRDY           (1 << 16)       /* Data Ready */
+#define         AT91_ADC_GOVRE          (1 << 17)       /* General Overrun Error */
+#define         AT91_ADC_ENDRX          (1 << 18)       /* End of RX Buffer */
+#define         AT91_ADC_RXFUFF         (1 << 19)       /* RX Buffer Full */
+
+#define AT91_ADC_LCDR           0x20            /* Last Converted Data Register */
+#define         AT91_ADC_LDATA          (0x3ff)
+
+#define AT91_ADC_IER            0x24            /* Interrupt Enable Register */
+#define AT91_ADC_IDR            0x28            /* Interrupt Disable Register */
+#define AT91_ADC_IMR            0x2C            /* Interrupt Mask Register */
+
+#define AT91_ADC_CHR(n)         (0x30 + ((n) * 4)       /* Channel Data Register N */
+#define         AT91_ADC_DATA           (0x3ff)
+
+#endif