2 * Copyright (C) 2009 Samsung Electronics Ltd.
3 * Jaswinder Singh <jassi.brar@samsung.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
10 #ifndef __SPI_S3C64XX_H
11 #define __SPI_S3C64XX_H
13 #include <linux/dmaengine.h>
15 struct platform_device;
18 * struct s3c64xx_spi_csinfo - ChipSelect description
19 * @fb_delay: Slave specific feedback delay.
20 * Refer to FB_CLK_SEL register definition in SPI chapter.
21 * @line: Custom 'identity' of the CS line.
23 * This is per SPI-Slave Chipselect information.
24 * Allocate and initialize one in machine init code and make the
25 * spi_board_info.controller_data point to it.
27 struct s3c64xx_spi_csinfo {
33 * struct s3c64xx_spi_info - SPI Controller defining structure
34 * @src_clk_nr: Clock source index for the CLK_CFG[SPI_CLKSEL] field.
35 * @num_cs: Number of CS this controller emulates.
36 * @cfg_gpio: Configure pins for this SPI controller.
38 struct s3c64xx_spi_info {
42 int (*cfg_gpio)(void);
49 * s3c64xx_spi_set_platdata - SPI Controller configure callback by the board
50 * initialization code.
51 * @cfg_gpio: Pointer to gpio setup function.
52 * @src_clk_nr: Clock the SPI controller is to use to generate SPI clocks.
53 * @num_cs: Number of elements in the 'cs' array.
55 * Call this from machine init code for each SPI Controller that
56 * has some chips attached to it.
58 extern void s3c64xx_spi0_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
60 extern void s3c64xx_spi1_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
62 extern void s3c64xx_spi2_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
65 /* defined by architecture to configure gpio */
66 extern int s3c64xx_spi0_cfg_gpio(void);
67 extern int s3c64xx_spi1_cfg_gpio(void);
68 extern int s3c64xx_spi2_cfg_gpio(void);
70 extern struct s3c64xx_spi_info s3c64xx_spi0_pdata;
71 extern struct s3c64xx_spi_info s3c64xx_spi1_pdata;
72 extern struct s3c64xx_spi_info s3c64xx_spi2_pdata;
73 #endif /*__SPI_S3C64XX_H */