diff options
Diffstat (limited to 'include/linux/platform_data/spi-s3c64xx.h')
| -rw-r--r-- | include/linux/platform_data/spi-s3c64xx.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/include/linux/platform_data/spi-s3c64xx.h b/include/linux/platform_data/spi-s3c64xx.h new file mode 100644 index 000000000000..ceba18d23a5a --- /dev/null +++ b/include/linux/platform_data/spi-s3c64xx.h | |||
| @@ -0,0 +1,68 @@ | |||
| 1 | /* linux/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h | ||
| 2 | * | ||
| 3 | * Copyright (C) 2009 Samsung Electronics Ltd. | ||
| 4 | * Jaswinder Singh <jassi.brar@samsung.com> | ||
| 5 | * | ||
| 6 | * This program is free software; you can redistribute it and/or modify | ||
| 7 | * it under the terms of the GNU General Public License version 2 as | ||
| 8 | * published by the Free Software Foundation. | ||
| 9 | */ | ||
| 10 | |||
| 11 | #ifndef __S3C64XX_PLAT_SPI_H | ||
| 12 | #define __S3C64XX_PLAT_SPI_H | ||
| 13 | |||
| 14 | struct platform_device; | ||
| 15 | |||
| 16 | /** | ||
| 17 | * struct s3c64xx_spi_csinfo - ChipSelect description | ||
| 18 | * @fb_delay: Slave specific feedback delay. | ||
| 19 | * Refer to FB_CLK_SEL register definition in SPI chapter. | ||
| 20 | * @line: Custom 'identity' of the CS line. | ||
| 21 | * | ||
| 22 | * This is per SPI-Slave Chipselect information. | ||
| 23 | * Allocate and initialize one in machine init code and make the | ||
| 24 | * spi_board_info.controller_data point to it. | ||
| 25 | */ | ||
| 26 | struct s3c64xx_spi_csinfo { | ||
| 27 | u8 fb_delay; | ||
| 28 | unsigned line; | ||
| 29 | }; | ||
| 30 | |||
| 31 | /** | ||
| 32 | * struct s3c64xx_spi_info - SPI Controller defining structure | ||
| 33 | * @src_clk_nr: Clock source index for the CLK_CFG[SPI_CLKSEL] field. | ||
| 34 | * @num_cs: Number of CS this controller emulates. | ||
| 35 | * @cfg_gpio: Configure pins for this SPI controller. | ||
| 36 | */ | ||
| 37 | struct s3c64xx_spi_info { | ||
| 38 | int src_clk_nr; | ||
| 39 | int num_cs; | ||
| 40 | int (*cfg_gpio)(void); | ||
| 41 | }; | ||
| 42 | |||
| 43 | /** | ||
| 44 | * s3c64xx_spi_set_platdata - SPI Controller configure callback by the board | ||
| 45 | * initialization code. | ||
| 46 | * @cfg_gpio: Pointer to gpio setup function. | ||
| 47 | * @src_clk_nr: Clock the SPI controller is to use to generate SPI clocks. | ||
| 48 | * @num_cs: Number of elements in the 'cs' array. | ||
| 49 | * | ||
| 50 | * Call this from machine init code for each SPI Controller that | ||
| 51 | * has some chips attached to it. | ||
| 52 | */ | ||
| 53 | extern void s3c64xx_spi0_set_platdata(int (*cfg_gpio)(void), int src_clk_nr, | ||
| 54 | int num_cs); | ||
| 55 | extern void s3c64xx_spi1_set_platdata(int (*cfg_gpio)(void), int src_clk_nr, | ||
| 56 | int num_cs); | ||
| 57 | extern void s3c64xx_spi2_set_platdata(int (*cfg_gpio)(void), int src_clk_nr, | ||
| 58 | int num_cs); | ||
| 59 | |||
| 60 | /* defined by architecture to configure gpio */ | ||
| 61 | extern int s3c64xx_spi0_cfg_gpio(void); | ||
| 62 | extern int s3c64xx_spi1_cfg_gpio(void); | ||
| 63 | extern int s3c64xx_spi2_cfg_gpio(void); | ||
| 64 | |||
| 65 | extern struct s3c64xx_spi_info s3c64xx_spi0_pdata; | ||
| 66 | extern struct s3c64xx_spi_info s3c64xx_spi1_pdata; | ||
| 67 | extern struct s3c64xx_spi_info s3c64xx_spi2_pdata; | ||
| 68 | #endif /* __S3C64XX_PLAT_SPI_H */ | ||