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Diffstat (limited to 'arch/arm/mach-mx25/serial.h')
| -rw-r--r-- | arch/arm/mach-mx25/serial.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/arch/arm/mach-mx25/serial.h b/arch/arm/mach-mx25/serial.h new file mode 100644 index 000000000000..c6e77f9159c2 --- /dev/null +++ b/arch/arm/mach-mx25/serial.h @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#ifndef __ARCH_ARM_MACH_MX25_SERIAL_H__ +#define __ARCH_ARM_MACH_MX25_SERIAL_H__ + +/*! + * @file mach-mx25/serial.h + * + * @ingroup MSL_MX25 + */ +#include <mach/mxc_uart.h> + +/* UART 1 configuration */ +/*! + * This option allows to choose either an interrupt-driven software controlled + * hardware flow control (set this option to 0) or hardware-driven hardware + * flow control (set this option to 1). + */ +#define UART1_HW_FLOW 1 +/*! + * This specifies the threshold at which the CTS pin is deasserted by the + * RXFIFO. Set this value in Decimal to anything from 0 to 32 for + * hardware-driven hardware flow control. Read the HW spec while specifying + * this value. When using interrupt-driven software controlled hardware + * flow control set this option to -1. + */ +#define UART1_UCR4_CTSTL 16 +/*! + * This is option to enable (set this option to 1) or disable DMA data transfer + */ +#define UART1_DMA_ENABLE 0 +/*! + * Specify the size of the DMA receive buffer. The minimum buffer size is 512 + * bytes. The buffer size should be a multiple of 256. + */ +#define UART1_DMA_RXBUFSIZE 1024 +/*! + * Specify the MXC UART's Receive Trigger Level. This controls the threshold at + * which a maskable interrupt is generated by the RxFIFO. Set this value in + * Decimal to anything from 0 to 32. Read the HW spec while specifying this + * value. + */ +#define UART1_UFCR_RXTL 16 +/*! + * Specify the MXC UART's Transmit Trigger Level. This controls the threshold at + * which a maskable interrupt is generated by the TxFIFO. Set this value in + * Decimal to anything from 0 to 32. Read the HW spec while specifying this + * value. + */ +#define UART1_UFCR_TXTL 16 +/* UART 2 configuration */ +#define UART2_HW_FLOW 0 +#define UART2_UCR4_CTSTL (-1) +#define UART2_DMA_ENABLE 0 +#define UART2_DMA_RXBUFSIZE 512 +#define UART2_UFCR_RXTL 16 +#define UART2_UFCR_TXTL 16 +/* UART 3 configuration */ +#define UART3_HW_FLOW 1 +#define UART3_UCR4_CTSTL 16 +#define UART3_DMA_ENABLE 1 +#define UART3_DMA_RXBUFSIZE 1024 +#define UART3_UFCR_RXTL 16 +#define UART3_UFCR_TXTL 16 +/* UART 4 configuration */ +#define UART4_HW_FLOW 1 +#define UART4_UCR4_CTSTL 16 +#define UART4_DMA_ENABLE 1 +#define UART4_DMA_RXBUFSIZE 1024 +#define UART4_UFCR_RXTL 16 +#define UART4_UFCR_TXTL 16 +/* UART 5 configuration */ +#define UART5_HW_FLOW 1 +#define UART5_UCR4_CTSTL 16 +#define UART5_DMA_ENABLE 1 +#define UART5_DMA_RXBUFSIZE 1024 +#define UART5_UFCR_RXTL 16 +#define UART5_UFCR_TXTL 16 + +/* + * UART Chip level Configuration that a user may not have to edit. These + * configuration vary depending on how the UART module is integrated with + * the ARM core + */ +/* + * Is the MUXED interrupt output sent to the ARM core + */ +#define INTS_NOTMUXED 0 +#define INTS_MUXED 1 +/* UART 1 configuration */ +/*! + * This define specifies whether the muxed ANDed interrupt line or the + * individual interrupts from the UART port is integrated with the ARM core. + * There exists a define like this for each UART port. Valid values that can + * be used are \b INTS_NOTMUXED or \b INTS_MUXED. + */ +#define UART1_MUX_INTS INTS_MUXED +/*! + * This define specifies the transmitter interrupt number or the interrupt + * number of the ANDed interrupt in case the interrupts are muxed. There exists + * a define like this for each UART port. + */ +#define UART1_INT1 MX25_INT_UART1 +/*! + * This define specifies the receiver interrupt number. If the interrupts of + * the UART are muxed, then we specify here a dummy value -1. There exists a + * define like this for each UART port. + */ +#define UART1_INT2 (-1) +/*! + * This specifies the master interrupt number. If the interrupts of the UART + * are muxed, then we specify here a dummy value of -1. There exists a define + * like this for each UART port. + */ +#define UART1_INT3 (-1) +/* UART 2 configuration */ +#define UART2_MUX_INTS INTS_MUXED +#define UART2_INT1 MX25_INT_UART2 +#define UART2_INT2 (-1) +#define UART2_INT3 (-1) +/* UART 3 configuration */ +#define UART3_MUX_INTS INTS_MUXED +#define UART3_INT1 MX25_INT_UART3 +#define UART3_INT2 (-1) +#define UART3_INT3 (-1) +/* UART 4 configuration */ +#define UART4_MUX_INTS INTS_MUXED +#define UART4_INT1 MX25_INT_UART4 +#define UART4_INT2 (-1) +#define UART4_INT3 (-1) +/* UART 5 configuration */ +#define UART5_MUX_INTS INTS_MUXED +#define UART5_INT1 MX25_INT_UART5 +#define UART5_INT2 (-1) +#define UART5_INT3 (-1) + +#endif /* __ARCH_ARM_MACH_MX25_SERIAL_H__ */ |