Logo Search packages:      
Sourcecode: linux version File versions  Download package


/* linux/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h
 * Copyright (C) 2009 Samsung Electronics Ltd.
 *    Jaswinder Singh <jassi.brar@samsung.com>
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.

#ifndef __S3C64XX_PLAT_SPI_H
#define __S3C64XX_PLAT_SPI_H

 * struct s3c64xx_spi_csinfo - ChipSelect description
 * @fb_delay: Slave specific feedback delay.
 *            Refer to FB_CLK_SEL register definition in SPI chapter.
 * @line: Custom 'identity' of the CS line.
 * @set_level: CS line control.
 * This is per SPI-Slave Chipselect information.
 * Allocate and initialize one in machine init code and make the
 * spi_board_info.controller_data point to it.
00025 struct s3c64xx_spi_csinfo {
      u8 fb_delay;
      unsigned line;
      void (*set_level)(unsigned line_id, int lvl);

 * struct s3c64xx_spi_info - SPI Controller defining structure
 * @src_clk_nr: Clock source index for the CLK_CFG[SPI_CLKSEL] field.
 * @src_clk_name: Platform name of the corresponding clock.
 * @clk_from_cmu: If the SPI clock/prescalar control block is present
 *     by the platform's clock-management-unit and not in SPI controller.
 * @num_cs: Number of CS this controller emulates.
 * @cfg_gpio: Configure pins for this SPI controller.
 * @fifo_lvl_mask: All tx fifo_lvl fields start at offset-6
 * @rx_lvl_offset: Depends on tx fifo_lvl field and bus number
 * @high_speed: If the controller supports HIGH_SPEED_EN bit
00043 struct s3c64xx_spi_info {
      int src_clk_nr;
      char *src_clk_name;
      bool clk_from_cmu;

      int num_cs;

      int (*cfg_gpio)(struct platform_device *pdev);

      /* Following two fields are for future compatibility */
      int fifo_lvl_mask;
      int rx_lvl_offset;
      int high_speed;

 * s3c64xx_spi_set_info - SPI Controller configure callback by the board
 *                      initialization code.
 * @cntrlr: SPI controller number the configuration is for.
 * @src_clk_nr: Clock the SPI controller is to use to generate SPI clocks.
 * @num_cs: Number of elements in the 'cs' array.
 * Call this from machine init code for each SPI Controller that
 * has some chips attached to it.
extern void s3c64xx_spi_set_info(int cntrlr, int src_clk_nr, int num_cs);
extern void s5pc100_spi_set_info(int cntrlr, int src_clk_nr, int num_cs);
extern void s5pv210_spi_set_info(int cntrlr, int src_clk_nr, int num_cs);
extern void s5p64x0_spi_set_info(int cntrlr, int src_clk_nr, int num_cs);
extern void s5p6442_spi_set_info(int cntrlr, int src_clk_nr, int num_cs);

#endif /* __S3C64XX_PLAT_SPI_H */

Generated by  Doxygen 1.6.0   Back to index