Edit File: spi-davinci.h
/* * Copyright 2009 Texas Instruments. * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef __ARCH_ARM_DAVINCI_SPI_H #define __ARCH_ARM_DAVINCI_SPI_H #include <mach/edma.h> #define SPI_INTERN_CS 0xFF enum { SPI_VERSION_1, /* For DM355/DM365/DM6467 */ SPI_VERSION_2, /* For DA8xx */ }; /** * davinci_spi_platform_data - Platform data for SPI master device on DaVinci * * @version: version of the SPI IP. Different DaVinci devices have slightly * varying versions of the same IP. * @num_chipselect: number of chipselects supported by this SPI master * @intr_line: interrupt line used to connect the SPI IP to the ARM interrupt * controller withn the SoC. Possible values are 0 and 1. * @chip_sel: list of GPIOs which can act as chip-selects for the SPI. * SPI_INTERN_CS denotes internal SPI chip-select. Not necessary * to populate if all chip-selects are internal. * @cshold_bug: set this to true if the SPI controller on your chip requires * a write to CSHOLD bit in between transfers (like in DM355). * @dma_event_q: DMA event queue to use if SPI_IO_TYPE_DMA is used for any * device on the bus. */ struct davinci_spi_platform_data { u8 version; u8 num_chipselect; u8 intr_line; u8 *chip_sel; bool cshold_bug; enum dma_event_q dma_event_q; }; /** * davinci_spi_config - Per-chip-select configuration for SPI slave devices * * @wdelay: amount of delay between transmissions. Measured in number of * SPI module clocks. * @odd_parity: polarity of parity flag at the end of transmit data stream. * 0 - odd parity, 1 - even parity. * @parity_enable: enable transmission of parity at end of each transmit * data stream. * @io_type: type of IO transfer. Choose between polled, interrupt and DMA. * @timer_disable: disable chip-select timers (setup and hold) * @c2tdelay: chip-select setup time. Measured in number of SPI module clocks. * @t2cdelay: chip-select hold time. Measured in number of SPI module clocks. * @t2edelay: transmit data finished to SPI ENAn pin inactive time. Measured * in number of SPI clocks. * @c2edelay: chip-select active to SPI ENAn signal active time. Measured in * number of SPI clocks. */ struct davinci_spi_config { u8 wdelay; u8 odd_parity; u8 parity_enable; #define SPI_IO_TYPE_INTR 0 #define SPI_IO_TYPE_POLL 1 #define SPI_IO_TYPE_DMA 2 u8 io_type; u8 timer_disable; u8 c2tdelay; u8 t2cdelay; u8 t2edelay; u8 c2edelay; }; #endif /* __ARCH_ARM_DAVINCI_SPI_H */