diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2011-05-08 23:11:02 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2011-05-08 23:11:02 +0200 |
| commit | cded208c7ea6d107dcbfdb2e2d4622daf41c2886 (patch) | |
| tree | a04a03736b0a928c2954382f924aadb105ee39cc /libdde_linux26/contrib/include/linux/spi | |
| parent | fc82e00ca1e174cb961dea6ad37622e9b26cd899 (diff) | |
remove .svn directories
Diffstat (limited to 'libdde_linux26/contrib/include/linux/spi')
21 files changed, 0 insertions, 2267 deletions
diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/all-wcprops b/libdde_linux26/contrib/include/linux/spi/.svn/all-wcprops deleted file mode 100644 index bf5fe889..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/all-wcprops +++ /dev/null @@ -1,113 +0,0 @@ -K 25 -svn:wc:ra_dav:version-url -V 76 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi -END -spidev.h -K 25 -svn:wc:ra_dav:version-url -V 85 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/spidev.h -END -spi.h -K 25 -svn:wc:ra_dav:version-url -V 82 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/spi.h -END -flash.h -K 25 -svn:wc:ra_dav:version-url -V 84 -/repos/tudos/!svn/ver/174/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/flash.h -END -max7301.h -K 25 -svn:wc:ra_dav:version-url -V 86 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/max7301.h -END -ads7846.h -K 25 -svn:wc:ra_dav:version-url -V 86 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/ads7846.h -END -orion_spi.h -K 25 -svn:wc:ra_dav:version-url -V 88 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/orion_spi.h -END -tle62x0.h -K 25 -svn:wc:ra_dav:version-url -V 86 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/tle62x0.h -END -at73c213.h -K 25 -svn:wc:ra_dav:version-url -V 87 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/at73c213.h -END -spi_gpio.h -K 25 -svn:wc:ra_dav:version-url -V 87 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/spi_gpio.h -END -tdo24m.h -K 25 -svn:wc:ra_dav:version-url -V 85 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/tdo24m.h -END -mcp23s08.h -K 25 -svn:wc:ra_dav:version-url -V 87 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/mcp23s08.h -END -ds1305.h -K 25 -svn:wc:ra_dav:version-url -V 85 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/ds1305.h -END -spi_bitbang.h -K 25 -svn:wc:ra_dav:version-url -V 90 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/spi_bitbang.h -END -ad7877.h -K 25 -svn:wc:ra_dav:version-url -V 85 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/ad7877.h -END -Kbuild -K 25 -svn:wc:ra_dav:version-url -V 83 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/Kbuild -END -corgi_lcd.h -K 25 -svn:wc:ra_dav:version-url -V 88 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/corgi_lcd.h -END -mmc_spi.h -K 25 -svn:wc:ra_dav:version-url -V 86 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/mmc_spi.h -END -eeprom.h -K 25 -svn:wc:ra_dav:version-url -V 85 -/repos/tudos/!svn/ver/455/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi/eeprom.h -END diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/entries b/libdde_linux26/contrib/include/linux/spi/.svn/entries deleted file mode 100644 index b579ee13..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/entries +++ /dev/null @@ -1,640 +0,0 @@ -9 - -dir -465 -http://svn.tudos.org/repos/tudos/trunk/l4/pkg/dde/linux26/contrib/include/linux/spi -http://svn.tudos.org/repos/tudos - - - -2009-05-20T14:32:55.606606Z -455 -l4check - - -svn:special svn:externals svn:needs-lock - - - - - - - - - - - -a704ac0b-3a55-4d43-a2a9-7be6f07c34fb - -spidev.h -file - - - - -2009-11-15T17:15:10.000000Z -ec15a71bce0b102c76bc23024686958c -2009-05-20T14:32:55.606606Z -455 -l4check - - - - - - - - - - - - - - - - - - - - - -4620 - -spi.h -file - - - - -2009-11-15T17:15:10.000000Z -70996804341e8f74ff6ad52b68792e94 -2009-05-20T14:32:55.606606Z -455 -l4check - - - - - - - - - - - - - - - - - - - - - -29862 - -flash.h -file - - - - -2009-11-15T17:15:10.000000Z -15aed8e28f9a5d0db89790c1b1f3f6e6 -2007-09-08T19:44:13.897747Z -174 -l4check - - - - - - - - - - - - - - - - - - - - - -983 - -max7301.h -file - - - - -2009-11-15T17:15:10.000000Z -e53293ada0675f284184c83ddf9277d6 -2009-05-20T14:32:55.606606Z -455 -l4check - - - - - - - - - - - - - - - - - - - - - -156 - 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- - - - - - - - - - - - - - - - - - - - -421 - -mmc_spi.h -file - - - - -2009-11-15T17:15:10.000000Z -64e8be6990f46c5948d9107c42780069 -2009-05-20T14:32:55.606606Z -455 -l4check - - - - - - - - - - - - - - - - - - - - - -1689 - -eeprom.h -file - - - - -2009-11-15T17:15:10.000000Z -2c5cee5b2bcf71e186298e18a035d4d8 -2009-05-20T14:32:55.606606Z -455 -l4check - - - - - - - - - - - - - - - - - - - - - -703 - diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/format b/libdde_linux26/contrib/include/linux/spi/.svn/format deleted file mode 100644 index ec635144..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/format +++ /dev/null @@ -1 +0,0 @@ -9 diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/Kbuild.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/Kbuild.svn-base deleted file mode 100644 index d375a082..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/Kbuild.svn-base +++ /dev/null @@ -1 +0,0 @@ -header-y += spidev.h diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/ad7877.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/ad7877.h.svn-base deleted file mode 100644 index cdbed816..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/ad7877.h.svn-base +++ /dev/null @@ -1,24 +0,0 @@ -/* linux/spi/ad7877.h */ - -/* Touchscreen characteristics vary between boards and models. The - * platform_data for the device's "struct device" holds this information. - * - * It's OK if the min/max values are zero. - */ -struct ad7877_platform_data { - u16 model; /* 7877 */ - u16 vref_delay_usecs; /* 0 for external vref; etc */ - u16 x_plate_ohms; - u16 y_plate_ohms; - - u16 x_min, x_max; - u16 y_min, y_max; - u16 pressure_min, pressure_max; - - u8 stopacq_polarity; /* 1 = Active HIGH, 0 = Active LOW */ - u8 first_conversion_delay; /* 0 = 0.5us, 1 = 128us, 2 = 1ms, 3 = 8ms */ - u8 acquisition_time; /* 0 = 2us, 1 = 4us, 2 = 8us, 3 = 16us */ - u8 averaging; /* 0 = 1, 1 = 4, 2 = 8, 3 = 16 */ - u8 pen_down_acc_interval; /* 0 = covert once, 1 = every 0.5 ms, - 2 = ever 1 ms, 3 = every 8 ms,*/ -}; diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/ads7846.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/ads7846.h.svn-base deleted file mode 100644 index 05eab2f1..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/ads7846.h.svn-base +++ /dev/null @@ -1,55 +0,0 @@ -/* linux/spi/ads7846.h */ - -/* Touchscreen characteristics vary between boards and models. The - * platform_data for the device's "struct device" holds this information. - * - * It's OK if the min/max values are zero. - */ -enum ads7846_filter { - ADS7846_FILTER_OK, - ADS7846_FILTER_REPEAT, - ADS7846_FILTER_IGNORE, -}; - -struct ads7846_platform_data { - u16 model; /* 7843, 7845, 7846. */ - u16 vref_delay_usecs; /* 0 for external vref; etc */ - u16 vref_mv; /* external vref value, milliVolts */ - bool keep_vref_on; /* set to keep vref on for differential - * measurements as well */ - - /* Settling time of the analog signals; a function of Vcc and the - * capacitance on the X/Y drivers. If set to non-zero, two samples - * are taken with settle_delay us apart, and the second one is used. - * ~150 uSec with 0.01uF caps. - */ - u16 settle_delay_usecs; - - /* If set to non-zero, after samples are taken this delay is applied - * and penirq is rechecked, to help avoid false events. This value - * is affected by the material used to build the touch layer. - */ - u16 penirq_recheck_delay_usecs; - - u16 x_plate_ohms; - u16 y_plate_ohms; - - u16 x_min, x_max; - u16 y_min, y_max; - u16 pressure_min, pressure_max; - - u16 debounce_max; /* max number of additional readings - * per sample */ - u16 debounce_tol; /* tolerance used for filtering */ - u16 debounce_rep; /* additional consecutive good readings - * required after the first two */ - int gpio_pendown; /* the GPIO used to decide the pendown - * state if get_pendown_state == NULL - */ - int (*get_pendown_state)(void); - int (*filter_init) (struct ads7846_platform_data *pdata, - void **filter_data); - int (*filter) (void *filter_data, int data_idx, int *val); - void (*filter_cleanup)(void *filter_data); -}; - diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/at73c213.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/at73c213.h.svn-base deleted file mode 100644 index 0f20a70e..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/at73c213.h.svn-base +++ /dev/null @@ -1,25 +0,0 @@ -/* - * Board-specific data used to set up AT73c213 audio DAC driver. - */ - -#ifndef __LINUX_SPI_AT73C213_H -#define __LINUX_SPI_AT73C213_H - -/** - * at73c213_board_info - how the external DAC is wired to the device. - * - * @ssc_id: SSC platform_driver id the DAC shall use to stream the audio. - * @dac_clk: the external clock used to provide master clock to the DAC. - * @shortname: a short discription for the DAC, seen by userspace tools. - * - * This struct contains the configuration of the hardware connection to the - * external DAC. The DAC needs a master clock and a I2S audio stream. It also - * provides a name which is used to identify it in userspace tools. - */ -struct at73c213_board_info { - int ssc_id; - struct clk *dac_clk; - char shortname[32]; -}; - -#endif /* __LINUX_SPI_AT73C213_H */ diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/corgi_lcd.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/corgi_lcd.h.svn-base deleted file mode 100644 index 6692b341..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/corgi_lcd.h.svn-base +++ /dev/null @@ -1,20 +0,0 @@ -#ifndef __LINUX_SPI_CORGI_LCD_H -#define __LINUX_SPI_CORGI_LCD_H - -#define CORGI_LCD_MODE_QVGA 1 -#define CORGI_LCD_MODE_VGA 2 - -struct corgi_lcd_platform_data { - int init_mode; - int max_intensity; - int default_intensity; - int limit_mask; - - int gpio_backlight_on; /* -1 if n/a */ - int gpio_backlight_cont; /* -1 if n/a */ - - void (*notify)(int intensity); - void (*kick_battery)(void); -}; - -#endif /* __LINUX_SPI_CORGI_LCD_H */ diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/ds1305.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/ds1305.h.svn-base deleted file mode 100644 index 287ec830..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/ds1305.h.svn-base +++ /dev/null @@ -1,35 +0,0 @@ -#ifndef __LINUX_SPI_DS1305_H -#define __LINUX_SPI_DS1305_H - -/* - * One-time configuration for ds1305 and ds1306 RTC chips. - * - * Put a pointer to this in spi_board_info.platform_data if you want to - * be sure that Linux (re)initializes this as needed ... after losing - * backup power, and potentially on the first boot. - */ -struct ds1305_platform_data { - - /* Trickle charge configuration: it's OK to leave out the MAGIC - * bitmask; mask in either DS1 or DS2, and then one of 2K/4k/8K. - */ -#define DS1305_TRICKLE_MAGIC 0xa0 -#define DS1305_TRICKLE_DS2 0x08 /* two diodes */ -#define DS1305_TRICKLE_DS1 0x04 /* one diode */ -#define DS1305_TRICKLE_2K 0x01 /* 2 KOhm resistance */ -#define DS1305_TRICKLE_4K 0x02 /* 4 KOhm resistance */ -#define DS1305_TRICKLE_8K 0x03 /* 8 KOhm resistance */ - u8 trickle; - - /* set only on ds1306 parts */ - bool is_ds1306; - - /* ds1306 only: enable 1 Hz output */ - bool en_1hz; - - /* REVISIT: the driver currently expects nINT0 to be wired - * as the alarm IRQ. ALM1 may also need to be set up ... - */ -}; - -#endif /* __LINUX_SPI_DS1305_H */ diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/eeprom.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/eeprom.h.svn-base deleted file mode 100644 index 1085212c..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/eeprom.h.svn-base +++ /dev/null @@ -1,22 +0,0 @@ -#ifndef __LINUX_SPI_EEPROM_H -#define __LINUX_SPI_EEPROM_H - -/* - * Put one of these structures in platform_data for SPI EEPROMS handled - * by the "at25" driver. On SPI, most EEPROMS understand the same core - * command set. If you need to support EEPROMs that don't yet fit, add - * flags to support those protocol options. These values all come from - * the chip datasheets. - */ -struct spi_eeprom { - u32 byte_len; - char name[10]; - u16 page_size; /* for writes */ - u16 flags; -#define EE_ADDR1 0x0001 /* 8 bit addrs */ -#define EE_ADDR2 0x0002 /* 16 bit addrs */ -#define EE_ADDR3 0x0004 /* 24 bit addrs */ -#define EE_READONLY 0x0008 /* disallow writes */ -}; - -#endif /* __LINUX_SPI_EEPROM_H */ diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/flash.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/flash.h.svn-base deleted file mode 100644 index 3f22932e..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/flash.h.svn-base +++ /dev/null @@ -1,31 +0,0 @@ -#ifndef LINUX_SPI_FLASH_H -#define LINUX_SPI_FLASH_H - -struct mtd_partition; - -/** - * struct flash_platform_data: board-specific flash data - * @name: optional flash device name (eg, as used with mtdparts=) - * @parts: optional array of mtd_partitions for static partitioning - * @nr_parts: number of mtd_partitions for static partitoning - * @type: optional flash device type (e.g. m25p80 vs m25p64), for use - * with chips that can't be queried for JEDEC or other IDs - * - * Board init code (in arch/.../mach-xxx/board-yyy.c files) can - * provide information about SPI flash parts (such as DataFlash) to - * help set up the device and its appropriate default partitioning. - * - * Note that for DataFlash, sizes for pages, blocks, and sectors are - * rarely powers of two; and partitions should be sector-aligned. - */ -struct flash_platform_data { - char *name; - struct mtd_partition *parts; - unsigned int nr_parts; - - char *type; - - /* we'll likely add more ... use JEDEC IDs, etc */ -}; - -#endif diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/max7301.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/max7301.h.svn-base deleted file mode 100644 index 6dfd83f1..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/max7301.h.svn-base +++ /dev/null @@ -1,9 +0,0 @@ -#ifndef LINUX_SPI_MAX7301_H -#define LINUX_SPI_MAX7301_H - -struct max7301_platform_data { - /* number assigned to the first GPIO */ - unsigned base; -}; - -#endif diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/mcp23s08.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/mcp23s08.h.svn-base deleted file mode 100644 index 22ef107d..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/mcp23s08.h.svn-base +++ /dev/null @@ -1,31 +0,0 @@ - -/* FIXME driver should be able to handle IRQs... */ - -struct mcp23s08_chip_info { - bool is_present; /* true iff populated */ - u8 pullups; /* BIT(x) means enable pullup x */ -}; - -struct mcp23s08_platform_data { - /* Four slaves (numbered 0..3) can share one SPI chipselect, and - * will provide 8..32 GPIOs using 1..4 gpio_chip instances. - */ - struct mcp23s08_chip_info chip[4]; - - /* "base" is the number of the first GPIO. Dynamic assignment is - * not currently supported, and even if there are gaps in chip - * addressing the GPIO numbers are sequential .. so for example - * if only slaves 0 and 3 are present, their GPIOs range from - * base to base+15. - */ - unsigned base; - - void *context; /* param to setup/teardown */ - - int (*setup)(struct spi_device *spi, - int gpio, unsigned ngpio, - void *context); - int (*teardown)(struct spi_device *spi, - int gpio, unsigned ngpio, - void *context); -}; diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/mmc_spi.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/mmc_spi.h.svn-base deleted file mode 100644 index 0f4eb165..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/mmc_spi.h.svn-base +++ /dev/null @@ -1,57 +0,0 @@ -#ifndef __LINUX_SPI_MMC_SPI_H -#define __LINUX_SPI_MMC_SPI_H - -#include <linux/device.h> -#include <linux/spi/spi.h> -#include <linux/interrupt.h> - -struct mmc_host; - -/* Put this in platform_data of a device being used to manage an MMC/SD - * card slot. (Modeled after PXA mmc glue; see that for usage examples.) - * - * REVISIT This is not a spi-specific notion. Any card slot should be - * able to handle it. If the MMC core doesn't adopt this kind of notion, - * switch the "struct device *" parameters over to "struct spi_device *". - */ -struct mmc_spi_platform_data { - /* driver activation and (optional) card detect irq hookup */ - int (*init)(struct device *, - irqreturn_t (*)(int, void *), - void *); - void (*exit)(struct device *, void *); - - /* sense switch on sd cards */ - int (*get_ro)(struct device *); - - /* - * If board does not use CD interrupts, driver can optimize polling - * using this function. - */ - int (*get_cd)(struct device *); - - /* Capabilities to pass into mmc core (e.g. MMC_CAP_NEEDS_POLL). */ - unsigned long caps; - - /* how long to debounce card detect, in msecs */ - u16 detect_delay; - - /* power management */ - u16 powerup_msecs; /* delay of up to 250 msec */ - u32 ocr_mask; /* available voltages */ - void (*setpower)(struct device *, unsigned int maskval); -}; - -#ifdef CONFIG_OF -extern struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi); -extern void mmc_spi_put_pdata(struct spi_device *spi); -#else -static inline struct mmc_spi_platform_data * -mmc_spi_get_pdata(struct spi_device *spi) -{ - return spi->dev.platform_data; -} -static inline void mmc_spi_put_pdata(struct spi_device *spi) {} -#endif /* CONFIG_OF */ - -#endif /* __LINUX_SPI_MMC_SPI_H */ diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/orion_spi.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/orion_spi.h.svn-base deleted file mode 100644 index decf6d8c..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/orion_spi.h.svn-base +++ /dev/null @@ -1,18 +0,0 @@ -/* - * orion_spi.h - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#ifndef __LINUX_SPI_ORION_SPI_H -#define __LINUX_SPI_ORION_SPI_H - -struct orion_spi_info { - u32 tclk; /* no <linux/clk.h> support yet */ - u32 enable_clock_fix; -}; - - -#endif diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spi.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spi.h.svn-base deleted file mode 100644 index 68bb1c50..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spi.h.svn-base +++ /dev/null @@ -1,806 +0,0 @@ -/* - * Copyright (C) 2005 David Brownell - * - * 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 __LINUX_SPI_H -#define __LINUX_SPI_H - -#include <linux/device.h> - -/* - * INTERFACES between SPI master-side drivers and SPI infrastructure. - * (There's no SPI slave support for Linux yet...) - */ -extern struct bus_type spi_bus_type; - -/** - * struct spi_device - Master side proxy for an SPI slave device - * @dev: Driver model representation of the device. - * @master: SPI controller used with the device. - * @max_speed_hz: Maximum clock rate to be used with this chip - * (on this board); may be changed by the device's driver. - * The spi_transfer.speed_hz can override this for each transfer. - * @chip_select: Chipselect, distinguishing chips handled by @master. - * @mode: The spi mode defines how data is clocked out and in. - * This may be changed by the device's driver. - * The "active low" default for chipselect mode can be overridden - * (by specifying SPI_CS_HIGH) as can the "MSB first" default for - * each word in a transfer (by specifying SPI_LSB_FIRST). - * @bits_per_word: Data transfers involve one or more words; word sizes - * like eight or 12 bits are common. In-memory wordsizes are - * powers of two bytes (e.g. 20 bit samples use 32 bits). - * This may be changed by the device's driver, or left at the - * default (0) indicating protocol words are eight bit bytes. - * The spi_transfer.bits_per_word can override this for each transfer. - * @irq: Negative, or the number passed to request_irq() to receive - * interrupts from this device. - * @controller_state: Controller's runtime state - * @controller_data: Board-specific definitions for controller, such as - * FIFO initialization parameters; from board_info.controller_data - * @modalias: Name of the driver to use with this device, or an alias - * for that name. This appears in the sysfs "modalias" attribute - * for driver coldplugging, and in uevents used for hotplugging - * - * A @spi_device is used to interchange data between an SPI slave - * (usually a discrete chip) and CPU memory. - * - * In @dev, the platform_data is used to hold information about this - * device that's meaningful to the device's protocol driver, but not - * to its controller. One example might be an identifier for a chip - * variant with slightly different functionality; another might be - * information about how this particular board wires the chip's pins. - */ -struct spi_device { - struct device dev; - struct spi_master *master; - u32 max_speed_hz; - u8 chip_select; - u8 mode; -#define SPI_CPHA 0x01 /* clock phase */ -#define SPI_CPOL 0x02 /* clock polarity */ -#define SPI_MODE_0 (0|0) /* (original MicroWire) */ -#define SPI_MODE_1 (0|SPI_CPHA) -#define SPI_MODE_2 (SPI_CPOL|0) -#define SPI_MODE_3 (SPI_CPOL|SPI_CPHA) -#define SPI_CS_HIGH 0x04 /* chipselect active high? */ -#define SPI_LSB_FIRST 0x08 /* per-word bits-on-wire */ -#define SPI_3WIRE 0x10 /* SI/SO signals shared */ -#define SPI_LOOP 0x20 /* loopback mode */ - u8 bits_per_word; - int irq; - void *controller_state; - void *controller_data; - char modalias[32]; - - /* - * likely need more hooks for more protocol options affecting how - * the controller talks to each chip, like: - * - memory packing (12 bit samples into low bits, others zeroed) - * - priority - * - drop chipselect after each word - * - chipselect delays - * - ... - */ -}; - -static inline struct spi_device *to_spi_device(struct device *dev) -{ - return dev ? container_of(dev, struct spi_device, dev) : NULL; -} - -/* most drivers won't need to care about device refcounting */ -static inline struct spi_device *spi_dev_get(struct spi_device *spi) -{ - return (spi && get_device(&spi->dev)) ? spi : NULL; -} - -static inline void spi_dev_put(struct spi_device *spi) -{ - if (spi) - put_device(&spi->dev); -} - -/* ctldata is for the bus_master driver's runtime state */ -static inline void *spi_get_ctldata(struct spi_device *spi) -{ - return spi->controller_state; -} - -static inline void spi_set_ctldata(struct spi_device *spi, void *state) -{ - spi->controller_state = state; -} - -/* device driver data */ - -static inline void spi_set_drvdata(struct spi_device *spi, void *data) -{ - dev_set_drvdata(&spi->dev, data); -} - -static inline void *spi_get_drvdata(struct spi_device *spi) -{ - return dev_get_drvdata(&spi->dev); -} - -struct spi_message; - - - -/** - * struct spi_driver - Host side "protocol" driver - * @probe: Binds this driver to the spi device. Drivers can verify - * that the device is actually present, and may need to configure - * characteristics (such as bits_per_word) which weren't needed for - * the initial configuration done during system setup. - * @remove: Unbinds this driver from the spi device - * @shutdown: Standard shutdown callback used during system state - * transitions such as powerdown/halt and kexec - * @suspend: Standard suspend callback used during system state transitions - * @resume: Standard resume callback used during system state transitions - * @driver: SPI device drivers should initialize the name and owner - * field of this structure. - * - * This represents the kind of device driver that uses SPI messages to - * interact with the hardware at the other end of a SPI link. It's called - * a "protocol" driver because it works through messages rather than talking - * directly to SPI hardware (which is what the underlying SPI controller - * driver does to pass those messages). These protocols are defined in the - * specification for the device(s) supported by the driver. - * - * As a rule, those device protocols represent the lowest level interface - * supported by a driver, and it will support upper level interfaces too. - * Examples of such upper levels include frameworks like MTD, networking, - * MMC, RTC, filesystem character device nodes, and hardware monitoring. - */ -struct spi_driver { - int (*probe)(struct spi_device *spi); - int (*remove)(struct spi_device *spi); - void (*shutdown)(struct spi_device *spi); - int (*suspend)(struct spi_device *spi, pm_message_t mesg); - int (*resume)(struct spi_device *spi); - struct device_driver driver; -}; - -static inline struct spi_driver *to_spi_driver(struct device_driver *drv) -{ - return drv ? container_of(drv, struct spi_driver, driver) : NULL; -} - -extern int spi_register_driver(struct spi_driver *sdrv); - -/** - * spi_unregister_driver - reverse effect of spi_register_driver - * @sdrv: the driver to unregister - * Context: can sleep - */ -static inline void spi_unregister_driver(struct spi_driver *sdrv) -{ - if (sdrv) - driver_unregister(&sdrv->driver); -} - - -/** - * struct spi_master - interface to SPI master controller - * @dev: device interface to this driver - * @bus_num: board-specific (and often SOC-specific) identifier for a - * given SPI controller. - * @num_chipselect: chipselects are used to distinguish individual - * SPI slaves, and are numbered from zero to num_chipselects. - * each slave has a chipselect signal, but it's common that not - * every chipselect is connected to a slave. - * @setup: updates the device mode and clocking records used by a - * device's SPI controller; protocol code may call this. This - * must fail if an unrecognized or unsupported mode is requested. - * It's always safe to call this unless transfers are pending on - * the device whose settings are being modified. - * @transfer: adds a message to the controller's transfer queue. - * @cleanup: frees controller-specific state - * - * Each SPI master controller can communicate with one or more @spi_device - * children. These make a small bus, sharing MOSI, MISO and SCK signals - * but not chip select signals. Each device may be configured to use a - * different clock rate, since those shared signals are ignored unless - * the chip is selected. - * - * The driver for an SPI controller manages access to those devices through - * a queue of spi_message transactions, copying data between CPU memory and - * an SPI slave device. For each such message it queues, it calls the - * message's completion function when the transaction completes. - */ -struct spi_master { - struct device dev; - - /* other than negative (== assign one dynamically), bus_num is fully - * board-specific. usually that simplifies to being SOC-specific. - * example: one SOC has three SPI controllers, numbered 0..2, - * and one board's schematics might show it using SPI-2. software - * would normally use bus_num=2 for that controller. - */ - s16 bus_num; - - /* chipselects will be integral to many controllers; some others - * might use board-specific GPIOs. - */ - u16 num_chipselect; - - /* setup mode and clock, etc (spi driver may call many times) */ - int (*setup)(struct spi_device *spi); - - /* bidirectional bulk transfers - * - * + The transfer() method may not sleep; its main role is - * just to add the message to the queue. - * + For now there's no remove-from-queue operation, or - * any other request management - * + To a given spi_device, message queueing is pure fifo - * - * + The master's main job is to process its message queue, - * selecting a chip then transferring data - * + If there are multiple spi_device children, the i/o queue - * arbitration algorithm is unspecified (round robin, fifo, - * priority, reservations, preemption, etc) - * - * + Chipselect stays active during the entire message - * (unless modified by spi_transfer.cs_change != 0). - * + The message transfers use clock and SPI mode parameters - * previously established by setup() for this device - */ - int (*transfer)(struct spi_device *spi, - struct spi_message *mesg); - - /* called on release() to free memory provided by spi_master */ - void (*cleanup)(struct spi_device *spi); -}; - -static inline void *spi_master_get_devdata(struct spi_master *master) -{ - return dev_get_drvdata(&master->dev); -} - -static inline void spi_master_set_devdata(struct spi_master *master, void *data) -{ - dev_set_drvdata(&master->dev, data); -} - -static inline struct spi_master *spi_master_get(struct spi_master *master) -{ - if (!master || !get_device(&master->dev)) - return NULL; - return master; -} - -static inline void spi_master_put(struct spi_master *master) -{ - if (master) - put_device(&master->dev); -} - - -/* the spi driver core manages memory for the spi_master classdev */ -extern struct spi_master * -spi_alloc_master(struct device *host, unsigned size); - -extern int spi_register_master(struct spi_master *master); -extern void spi_unregister_master(struct spi_master *master); - -extern struct spi_master *spi_busnum_to_master(u16 busnum); - -/*---------------------------------------------------------------------------*/ - -/* - * I/O INTERFACE between SPI controller and protocol drivers - * - * Protocol drivers use a queue of spi_messages, each transferring data - * between the controller and memory buffers. - * - * The spi_messages themselves consist of a series of read+write transfer - * segments. Those segments always read the same number of bits as they - * write; but one or the other is easily ignored by passing a null buffer - * pointer. (This is unlike most types of I/O API, because SPI hardware - * is full duplex.) - * - * NOTE: Allocation of spi_transfer and spi_message memory is entirely - * up to the protocol driver, which guarantees the integrity of both (as - * well as the data buffers) for as long as the message is queued. - */ - -/** - * struct spi_transfer - a read/write buffer pair - * @tx_buf: data to be written (dma-safe memory), or NULL - * @rx_buf: data to be read (dma-safe memory), or NULL - * @tx_dma: DMA address of tx_buf, if @spi_message.is_dma_mapped - * @rx_dma: DMA address of rx_buf, if @spi_message.is_dma_mapped - * @len: size of rx and tx buffers (in bytes) - * @speed_hz: Select a speed other than the device default for this - * transfer. If 0 the default (from @spi_device) is used. - * @bits_per_word: select a bits_per_word other than the device default - * for this transfer. If 0 the default (from @spi_device) is used. - * @cs_change: affects chipselect after this transfer completes - * @delay_usecs: microseconds to delay after this transfer before - * (optionally) changing the chipselect status, then starting - * the next transfer or completing this @spi_message. - * @transfer_list: transfers are sequenced through @spi_message.transfers - * - * SPI transfers always write the same number of bytes as they read. - * Protocol drivers should always provide @rx_buf and/or @tx_buf. - * In some cases, they may also want to provide DMA addresses for - * the data being transferred; that may reduce overhead, when the - * underlying driver uses dma. - * - * If the transmit buffer is null, zeroes will be shifted out - * while filling @rx_buf. If the receive buffer is null, the data - * shifted in will be discarded. Only "len" bytes shift out (or in). - * It's an error to try to shift out a partial word. (For example, by - * shifting out three bytes with word size of sixteen or twenty bits; - * the former uses two bytes per word, the latter uses four bytes.) - * - * In-memory data values are always in native CPU byte order, translated - * from the wire byte order (big-endian except with SPI_LSB_FIRST). So - * for example when bits_per_word is sixteen, buffers are 2N bytes long - * (@len = 2N) and hold N sixteen bit words in CPU byte order. - * - * When the word size of the SPI transfer is not a power-of-two multiple - * of eight bits, those in-memory words include extra bits. In-memory - * words are always seen by protocol drivers as right-justified, so the - * undefined (rx) or unused (tx) bits are always the most significant bits. - * - * All SPI transfers start with the relevant chipselect active. Normally - * it stays selected until after the last transfer in a message. Drivers - * can affect the chipselect signal using cs_change. - * - * (i) If the transfer isn't the last one in the message, this flag is - * used to make the chipselect briefly go inactive in the middle of the - * message. Toggling chipselect in this way may be needed to terminate - * a chip command, letting a single spi_message perform all of group of - * chip transactions together. - * - * (ii) When the transfer is the last one in the message, the chip may - * stay selected until the next transfer. On multi-device SPI busses - * with nothing blocking messages going to other devices, this is just - * a performance hint; starting a message to another device deselects - * this one. But in other cases, this can be used to ensure correctness. - * Some devices need protocol transactions to be built from a series of - * spi_message submissions, where the content of one message is determined - * by the results of previous messages and where the whole transaction - * ends when the chipselect goes intactive. - * - * The code that submits an spi_message (and its spi_transfers) - * to the lower layers is responsible for managing its memory. - * Zero-initialize every field you don't set up explicitly, to - * insulate against future API updates. After you submit a message - * and its transfers, ignore them until its completion callback. - */ -struct spi_transfer { - /* it's ok if tx_buf == rx_buf (right?) - * for MicroWire, one buffer must be null - * buffers must work with dma_*map_single() calls, unless - * spi_message.is_dma_mapped reports a pre-existing mapping - */ - const void *tx_buf; - void *rx_buf; - unsigned len; - - dma_addr_t tx_dma; - dma_addr_t rx_dma; - - unsigned cs_change:1; - u8 bits_per_word; - u16 delay_usecs; - u32 speed_hz; - - struct list_head transfer_list; -}; - -/** - * struct spi_message - one multi-segment SPI transaction - * @transfers: list of transfer segments in this transaction - * @spi: SPI device to which the transaction is queued - * @is_dma_mapped: if true, the caller provided both dma and cpu virtual - * addresses for each transfer buffer - * @complete: called to report transaction completions - * @context: the argument to complete() when it's called - * @actual_length: the total number of bytes that were transferred in all - * successful segments - * @status: zero for success, else negative errno - * @queue: for use by whichever driver currently owns the message - * @state: for use by whichever driver currently owns the message - * - * A @spi_message is used to execute an atomic sequence of data transfers, - * each represented by a struct spi_transfer. The sequence is "atomic" - * in the sense that no other spi_message may use that SPI bus until that - * sequence completes. On some systems, many such sequences can execute as - * as single programmed DMA transfer. On all systems, these messages are - * queued, and might complete after transactions to other devices. Messages - * sent to a given spi_device are alway executed in FIFO order. - * - * The code that submits an spi_message (and its spi_transfers) - * to the lower layers is responsible for managing its memory. - * Zero-initialize every field you don't set up explicitly, to - * insulate against future API updates. After you submit a message - * and its transfers, ignore them until its completion callback. - */ -struct spi_message { - struct list_head transfers; - - struct spi_device *spi; - - unsigned is_dma_mapped:1; - - /* REVISIT: we might want a flag affecting the behavior of the - * last transfer ... allowing things like "read 16 bit length L" - * immediately followed by "read L bytes". Basically imposing - * a specific message scheduling algorithm. - * - * Some controller drivers (message-at-a-time queue processing) - * could provide that as their default scheduling algorithm. But - * others (with multi-message pipelines) could need a flag to - * tell them about such special cases. - */ - - /* completion is reported through a callback */ - void (*complete)(void *context); - void *context; - unsigned actual_length; - int status; - - /* for optional use by whatever driver currently owns the - * spi_message ... between calls to spi_async and then later - * complete(), that's the spi_master controller driver. - */ - struct list_head queue; - void *state; -}; - -static inline void spi_message_init(struct spi_message *m) -{ - memset(m, 0, sizeof *m); - INIT_LIST_HEAD(&m->transfers); -} - -static inline void -spi_message_add_tail(struct spi_transfer *t, struct spi_message *m) -{ - list_add_tail(&t->transfer_list, &m->transfers); -} - -static inline void -spi_transfer_del(struct spi_transfer *t) -{ - list_del(&t->transfer_list); -} - -/* It's fine to embed message and transaction structures in other data - * structures so long as you don't free them while they're in use. - */ - -static inline struct spi_message *spi_message_alloc(unsigned ntrans, gfp_t flags) -{ - struct spi_message *m; - - m = kzalloc(sizeof(struct spi_message) - + ntrans * sizeof(struct spi_transfer), - flags); - if (m) { - int i; - struct spi_transfer *t = (struct spi_transfer *)(m + 1); - - INIT_LIST_HEAD(&m->transfers); - for (i = 0; i < ntrans; i++, t++) - spi_message_add_tail(t, m); - } - return m; -} - -static inline void spi_message_free(struct spi_message *m) -{ - kfree(m); -} - -/** - * spi_setup - setup SPI mode and clock rate - * @spi: the device whose settings are being modified - * Context: can sleep, and no requests are queued to the device - * - * SPI protocol drivers may need to update the transfer mode if the - * device doesn't work with its default. They may likewise need - * to update clock rates or word sizes from initial values. This function - * changes those settings, and must be called from a context that can sleep. - * Except for SPI_CS_HIGH, which takes effect immediately, the changes take - * effect the next time the device is selected and data is transferred to - * or from it. When this function returns, the spi device is deselected. - * - * Note that this call will fail if the protocol driver specifies an option - * that the underlying controller or its driver does not support. For - * example, not all hardware supports wire transfers using nine bit words, - * LSB-first wire encoding, or active-high chipselects. - */ -static inline int -spi_setup(struct spi_device *spi) -{ - return spi->master->setup(spi); -} - - -/** - * spi_async - asynchronous SPI transfer - * @spi: device with which data will be exchanged - * @message: describes the data transfers, including completion callback - * Context: any (irqs may be blocked, etc) - * - * This call may be used in_irq and other contexts which can't sleep, - * as well as from task contexts which can sleep. - * - * The completion callback is invoked in a context which can't sleep. - * Before that invocation, the value of message->status is undefined. - * When the callback is issued, message->status holds either zero (to - * indicate complete success) or a negative error code. After that - * callback returns, the driver which issued the transfer request may - * deallocate the associated memory; it's no longer in use by any SPI - * core or controller driver code. - * - * Note that although all messages to a spi_device are handled in - * FIFO order, messages may go to different devices in other orders. - * Some device might be higher priority, or have various "hard" access - * time requirements, for example. - * - * On detection of any fault during the transfer, processing of - * the entire message is aborted, and the device is deselected. - * Until returning from the associated message completion callback, - * no other spi_message queued to that device will be processed. - * (This rule applies equally to all the synchronous transfer calls, - * which are wrappers around this core asynchronous primitive.) - */ -static inline int -spi_async(struct spi_device *spi, struct spi_message *message) -{ - message->spi = spi; - return spi->master->transfer(spi, message); -} - -/*---------------------------------------------------------------------------*/ - -/* All these synchronous SPI transfer routines are utilities layered - * over the core async transfer primitive. Here, "synchronous" means - * they will sleep uninterruptibly until the async transfer completes. - */ - -extern int spi_sync(struct spi_device *spi, struct spi_message *message); - -/** - * spi_write - SPI synchronous write - * @spi: device to which data will be written - * @buf: data buffer - * @len: data buffer size - * Context: can sleep - * - * This writes the buffer and returns zero or a negative error code. - * Callable only from contexts that can sleep. - */ -static inline int -spi_write(struct spi_device *spi, const u8 *buf, size_t len) -{ - struct spi_transfer t = { - .tx_buf = buf, - .len = len, - }; - struct spi_message m; - - spi_message_init(&m); - spi_message_add_tail(&t, &m); - return spi_sync(spi, &m); -} - -/** - * spi_read - SPI synchronous read - * @spi: device from which data will be read - * @buf: data buffer - * @len: data buffer size - * Context: can sleep - * - * This reads the buffer and returns zero or a negative error code. - * Callable only from contexts that can sleep. - */ -static inline int -spi_read(struct spi_device *spi, u8 *buf, size_t len) -{ - struct spi_transfer t = { - .rx_buf = buf, - .len = len, - }; - struct spi_message m; - - spi_message_init(&m); - spi_message_add_tail(&t, &m); - return spi_sync(spi, &m); -} - -/* this copies txbuf and rxbuf data; for small transfers only! */ -extern int spi_write_then_read(struct spi_device *spi, - const u8 *txbuf, unsigned n_tx, - u8 *rxbuf, unsigned n_rx); - -/** - * spi_w8r8 - SPI synchronous 8 bit write followed by 8 bit read - * @spi: device with which data will be exchanged - * @cmd: command to be written before data is read back - * Context: can sleep - * - * This returns the (unsigned) eight bit number returned by the - * device, or else a negative error code. Callable only from - * contexts that can sleep. - */ -static inline ssize_t spi_w8r8(struct spi_device *spi, u8 cmd) -{ - ssize_t status; - u8 result; - - status = spi_write_then_read(spi, &cmd, 1, &result, 1); - - /* return negative errno or unsigned value */ - return (status < 0) ? status : result; -} - -/** - * spi_w8r16 - SPI synchronous 8 bit write followed by 16 bit read - * @spi: device with which data will be exchanged - * @cmd: command to be written before data is read back - * Context: can sleep - * - * This returns the (unsigned) sixteen bit number returned by the - * device, or else a negative error code. Callable only from - * contexts that can sleep. - * - * The number is returned in wire-order, which is at least sometimes - * big-endian. - */ -static inline ssize_t spi_w8r16(struct spi_device *spi, u8 cmd) -{ - ssize_t status; - u16 result; - - status = spi_write_then_read(spi, &cmd, 1, (u8 *) &result, 2); - - /* return negative errno or unsigned value */ - return (status < 0) ? status : result; -} - -/*---------------------------------------------------------------------------*/ - -/* - * INTERFACE between board init code and SPI infrastructure. - * - * No SPI driver ever sees these SPI device table segments, but - * it's how the SPI core (or adapters that get hotplugged) grows - * the driver model tree. - * - * As a rule, SPI devices can't be probed. Instead, board init code - * provides a table listing the devices which are present, with enough - * information to bind and set up the device's driver. There's basic - * support for nonstatic configurations too; enough to handle adding - * parport adapters, or microcontrollers acting as USB-to-SPI bridges. - */ - -/** - * struct spi_board_info - board-specific template for a SPI device - * @modalias: Initializes spi_device.modalias; identifies the driver. - * @platform_data: Initializes spi_device.platform_data; the particular - * data stored there is driver-specific. - * @controller_data: Initializes spi_device.controller_data; some - * controllers need hints about hardware setup, e.g. for DMA. - * @irq: Initializes spi_device.irq; depends on how the board is wired. - * @max_speed_hz: Initializes spi_device.max_speed_hz; based on limits - * from the chip datasheet and board-specific signal quality issues. - * @bus_num: Identifies which spi_master parents the spi_device; unused - * by spi_new_device(), and otherwise depends on board wiring. - * @chip_select: Initializes spi_device.chip_select; depends on how - * the board is wired. - * @mode: Initializes spi_device.mode; based on the chip datasheet, board - * wiring (some devices support both 3WIRE and standard modes), and - * possibly presence of an inverter in the chipselect path. - * - * When adding new SPI devices to the device tree, these structures serve - * as a partial device template. They hold information which can't always - * be determined by drivers. Information that probe() can establish (such - * as the default transfer wordsize) is not included here. - * - * These structures are used in two places. Their primary role is to - * be stored in tables of board-specific device descriptors, which are - * declared early in board initialization and then used (much later) to - * populate a controller's device tree after the that controller's driver - * initializes. A secondary (and atypical) role is as a parameter to - * spi_new_device() call, which happens after those controller drivers - * are active in some dynamic board configuration models. - */ -struct spi_board_info { - /* the device name and module name are coupled, like platform_bus; - * "modalias" is normally the driver name. - * - * platform_data goes to spi_device.dev.platform_data, - * controller_data goes to spi_device.controller_data, - * irq is copied too - */ - char modalias[32]; - const void *platform_data; - void *controller_data; - int irq; - - /* slower signaling on noisy or low voltage boards */ - u32 max_speed_hz; - - - /* bus_num is board specific and matches the bus_num of some - * spi_master that will probably be registered later. - * - * chip_select reflects how this chip is wired to that master; - * it's less than num_chipselect. - */ - u16 bus_num; - u16 chip_select; - - /* mode becomes spi_device.mode, and is essential for chips - * where the default of SPI_CS_HIGH = 0 is wrong. - */ - u8 mode; - - /* ... may need additional spi_device chip config data here. - * avoid stuff protocol drivers can set; but include stuff - * needed to behave without being bound to a driver: - * - quirks like clock rate mattering when not selected - */ -}; - -#ifdef CONFIG_SPI -extern int -spi_register_board_info(struct spi_board_info const *info, unsigned n); -#else -/* board init code may ignore whether SPI is configured or not */ -static inline int -spi_register_board_info(struct spi_board_info const *info, unsigned n) - { return 0; } -#endif - - -/* If you're hotplugging an adapter with devices (parport, usb, etc) - * use spi_new_device() to describe each device. You can also call - * spi_unregister_device() to start making that device vanish, but - * normally that would be handled by spi_unregister_master(). - * - * You can also use spi_alloc_device() and spi_add_device() to use a two - * stage registration sequence for each spi_device. This gives the caller - * some more control over the spi_device structure before it is registered, - * but requires that caller to initialize fields that would otherwise - * be defined using the board info. - */ -extern struct spi_device * -spi_alloc_device(struct spi_master *master); - -extern int -spi_add_device(struct spi_device *spi); - -extern struct spi_device * -spi_new_device(struct spi_master *, struct spi_board_info *); - -static inline void -spi_unregister_device(struct spi_device *spi) -{ - if (spi) - device_unregister(&spi->dev); -} - -#endif /* __LINUX_SPI_H */ diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spi_bitbang.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spi_bitbang.h.svn-base deleted file mode 100644 index eed4254b..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spi_bitbang.h.svn-base +++ /dev/null @@ -1,153 +0,0 @@ -#ifndef __SPI_BITBANG_H -#define __SPI_BITBANG_H - -/* - * Mix this utility code with some glue code to get one of several types of - * simple SPI master driver. Two do polled word-at-a-time I/O: - * - * - GPIO/parport bitbangers. Provide chipselect() and txrx_word[](), - * expanding the per-word routines from the inline templates below. - * - * - Drivers for controllers resembling bare shift registers. Provide - * chipselect() and txrx_word[](), with custom setup()/cleanup() methods - * that use your controller's clock and chipselect registers. - * - * Some hardware works well with requests at spi_transfer scope: - * - * - Drivers leveraging smarter hardware, with fifos or DMA; or for half - * duplex (MicroWire) controllers. Provide chipslect() and txrx_bufs(), - * and custom setup()/cleanup() methods. - */ - -#include <linux/workqueue.h> - -struct spi_bitbang { - struct workqueue_struct *workqueue; - struct work_struct work; - - spinlock_t lock; - struct list_head queue; - u8 busy; - u8 use_dma; - u8 flags; /* extra spi->mode support */ - - struct spi_master *master; - - /* setup_transfer() changes clock and/or wordsize to match settings - * for this transfer; zeroes restore defaults from spi_device. - */ - int (*setup_transfer)(struct spi_device *spi, - struct spi_transfer *t); - - void (*chipselect)(struct spi_device *spi, int is_on); -#define BITBANG_CS_ACTIVE 1 /* normally nCS, active low */ -#define BITBANG_CS_INACTIVE 0 - - /* txrx_bufs() may handle dma mapping for transfers that don't - * already have one (transfer.{tx,rx}_dma is zero), or use PIO - */ - int (*txrx_bufs)(struct spi_device *spi, struct spi_transfer *t); - - /* txrx_word[SPI_MODE_*]() just looks like a shift register */ - u32 (*txrx_word[4])(struct spi_device *spi, - unsigned nsecs, - u32 word, u8 bits); -}; - -/* you can call these default bitbang->master methods from your custom - * methods, if you like. - */ -extern int spi_bitbang_setup(struct spi_device *spi); -extern void spi_bitbang_cleanup(struct spi_device *spi); -extern int spi_bitbang_transfer(struct spi_device *spi, struct spi_message *m); -extern int spi_bitbang_setup_transfer(struct spi_device *spi, - struct spi_transfer *t); - -/* start or stop queue processing */ -extern int spi_bitbang_start(struct spi_bitbang *spi); -extern int spi_bitbang_stop(struct spi_bitbang *spi); - -#endif /* __SPI_BITBANG_H */ - -/*-------------------------------------------------------------------------*/ - -#ifdef EXPAND_BITBANG_TXRX - -/* - * The code that knows what GPIO pins do what should have declared four - * functions, ideally as inlines, before #defining EXPAND_BITBANG_TXRX - * and including this header: - * - * void setsck(struct spi_device *, int is_on); - * void setmosi(struct spi_device *, int is_on); - * int getmiso(struct spi_device *); - * void spidelay(unsigned); - * - * setsck()'s is_on parameter is a zero/nonzero boolean. - * - * setmosi()'s is_on parameter is a zero/nonzero boolean. - * - * getmiso() is required to return 0 or 1 only. Any other value is invalid - * and will result in improper operation. - * - * A non-inlined routine would call bitbang_txrx_*() routines. The - * main loop could easily compile down to a handful of instructions, - * especially if the delay is a NOP (to run at peak speed). - * - * Since this is software, the timings may not be exactly what your board's - * chips need ... there may be several reasons you'd need to tweak timings - * in these routines, not just make to make it faster or slower to match a - * particular CPU clock rate. - */ - -static inline u32 -bitbang_txrx_be_cpha0(struct spi_device *spi, - unsigned nsecs, unsigned cpol, - u32 word, u8 bits) -{ - /* if (cpol == 0) this is SPI_MODE_0; else this is SPI_MODE_2 */ - - /* clock starts at inactive polarity */ - for (word <<= (32 - bits); likely(bits); bits--) { - - /* setup MSB (to slave) on trailing edge */ - setmosi(spi, word & (1 << 31)); - spidelay(nsecs); /* T(setup) */ - - setsck(spi, !cpol); - spidelay(nsecs); - - /* sample MSB (from slave) on leading edge */ - word <<= 1; - word |= getmiso(spi); - setsck(spi, cpol); - } - return word; -} - -static inline u32 -bitbang_txrx_be_cpha1(struct spi_device *spi, - unsigned nsecs, unsigned cpol, - u32 word, u8 bits) -{ - /* if (cpol == 0) this is SPI_MODE_1; else this is SPI_MODE_3 */ - - /* clock starts at inactive polarity */ - for (word <<= (32 - bits); likely(bits); bits--) { - - /* setup MSB (to slave) on leading edge */ - setsck(spi, !cpol); - setmosi(spi, word & (1 << 31)); - spidelay(nsecs); /* T(setup) */ - - setsck(spi, cpol); - spidelay(nsecs); - - /* sample MSB (from slave) on trailing edge */ - word <<= 1; - word |= getmiso(spi); - } - return word; -} - -#endif /* EXPAND_BITBANG_TXRX */ diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spi_gpio.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spi_gpio.h.svn-base deleted file mode 100644 index 0f01a0f1..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spi_gpio.h.svn-base +++ /dev/null @@ -1,60 +0,0 @@ -#ifndef __LINUX_SPI_GPIO_H -#define __LINUX_SPI_GPIO_H - -/* - * For each bitbanged SPI bus, set up a platform_device node with: - * - name "spi_gpio" - * - id the same as the SPI bus number it implements - * - dev.platform data pointing to a struct spi_gpio_platform_data - * - * Or, see the driver code for information about speedups that are - * possible on platforms that support inlined access for GPIOs (no - * spi_gpio_platform_data is used). - * - * Use spi_board_info with these busses in the usual way, being sure - * that the controller_data being the GPIO used for each device's - * chipselect: - * - * static struct spi_board_info ... [] = { - * ... - * // this slave uses GPIO 42 for its chipselect - * .controller_data = (void *) 42, - * ... - * // this one uses GPIO 86 for its chipselect - * .controller_data = (void *) 86, - * ... - * }; - * - * If the bitbanged bus is later switched to a "native" controller, - * that platform_device and controller_data should be removed. - */ - -/** - * struct spi_gpio_platform_data - parameter for bitbanged SPI master - * @sck: number of the GPIO used for clock output - * @mosi: number of the GPIO used for Master Output, Slave In (MOSI) data - * @miso: number of the GPIO used for Master Input, Slave Output (MISO) data - * @num_chipselect: how many slaves to allow - * - * All GPIO signals used with the SPI bus managed through this driver - * (chipselects, MOSI, MISO, SCK) must be configured as GPIOs, instead - * of some alternate function. - * - * It can be convenient to use this driver with pins that have alternate - * functions associated with a "native" SPI controller if a driver for that - * controller is not available, or is missing important functionality. - * - * On platforms which can do so, configure MISO with a weak pullup unless - * there's an external pullup on that signal. That saves power by avoiding - * floating signals. (A weak pulldown would save power too, but many - * drivers expect to see all-ones data as the no slave "response".) - */ -struct spi_gpio_platform_data { - unsigned sck; - unsigned mosi; - unsigned miso; - - u16 num_chipselect; -}; - -#endif /* __LINUX_SPI_GPIO_H */ diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spidev.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spidev.h.svn-base deleted file mode 100644 index 95251ccd..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/spidev.h.svn-base +++ /dev/null @@ -1,129 +0,0 @@ -/* - * include/linux/spi/spidev.h - * - * Copyright (C) 2006 SWAPP - * Andrea Paterniani <a.paterniani@swapp-eng.it> - * - * 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 SPIDEV_H -#define SPIDEV_H - -#include <linux/types.h> - -/* User space versions of kernel symbols for SPI clocking modes, - * matching <linux/spi/spi.h> - */ - -#define SPI_CPHA 0x01 -#define SPI_CPOL 0x02 - -#define SPI_MODE_0 (0|0) -#define SPI_MODE_1 (0|SPI_CPHA) -#define SPI_MODE_2 (SPI_CPOL|0) -#define SPI_MODE_3 (SPI_CPOL|SPI_CPHA) - -#define SPI_CS_HIGH 0x04 -#define SPI_LSB_FIRST 0x08 -#define SPI_3WIRE 0x10 -#define SPI_LOOP 0x20 - -/*---------------------------------------------------------------------------*/ - -/* IOCTL commands */ - -#define SPI_IOC_MAGIC 'k' - -/** - * struct spi_ioc_transfer - describes a single SPI transfer - * @tx_buf: Holds pointer to userspace buffer with transmit data, or null. - * If no data is provided, zeroes are shifted out. - * @rx_buf: Holds pointer to userspace buffer for receive data, or null. - * @len: Length of tx and rx buffers, in bytes. - * @speed_hz: Temporary override of the device's bitrate. - * @bits_per_word: Temporary override of the device's wordsize. - * @delay_usecs: If nonzero, how long to delay after the last bit transfer - * before optionally deselecting the device before the next transfer. - * @cs_change: True to deselect device before starting the next transfer. - * - * This structure is mapped directly to the kernel spi_transfer structure; - * the fields have the same meanings, except of course that the pointers - * are in a different address space (and may be of different sizes in some - * cases, such as 32-bit i386 userspace over a 64-bit x86_64 kernel). - * Zero-initialize the structure, including currently unused fields, to - * accomodate potential future updates. - * - * SPI_IOC_MESSAGE gives userspace the equivalent of kernel spi_sync(). - * Pass it an array of related transfers, they'll execute together. - * Each transfer may be half duplex (either direction) or full duplex. - * - * struct spi_ioc_transfer mesg[4]; - * ... - * status = ioctl(fd, SPI_IOC_MESSAGE(4), mesg); - * - * So for example one transfer might send a nine bit command (right aligned - * in a 16-bit word), the next could read a block of 8-bit data before - * terminating that command by temporarily deselecting the chip; the next - * could send a different nine bit command (re-selecting the chip), and the - * last transfer might write some register values. - */ -struct spi_ioc_transfer { - __u64 tx_buf; - __u64 rx_buf; - - __u32 len; - __u32 speed_hz; - - __u16 delay_usecs; - __u8 bits_per_word; - __u8 cs_change; - __u32 pad; - - /* If the contents of 'struct spi_ioc_transfer' ever change - * incompatibly, then the ioctl number (currently 0) must change; - * ioctls with constant size fields get a bit more in the way of - * error checking than ones (like this) where that field varies. - * - * NOTE: struct layout is the same in 64bit and 32bit userspace. - */ -}; - -/* not all platforms use <asm-generic/ioctl.h> or _IOC_TYPECHECK() ... */ -#define SPI_MSGSIZE(N) \ - ((((N)*(sizeof (struct spi_ioc_transfer))) < (1 << _IOC_SIZEBITS)) \ - ? ((N)*(sizeof (struct spi_ioc_transfer))) : 0) -#define SPI_IOC_MESSAGE(N) _IOW(SPI_IOC_MAGIC, 0, char[SPI_MSGSIZE(N)]) - - -/* Read / Write of SPI mode (SPI_MODE_0..SPI_MODE_3) */ -#define SPI_IOC_RD_MODE _IOR(SPI_IOC_MAGIC, 1, __u8) -#define SPI_IOC_WR_MODE _IOW(SPI_IOC_MAGIC, 1, __u8) - -/* Read / Write SPI bit justification */ -#define SPI_IOC_RD_LSB_FIRST _IOR(SPI_IOC_MAGIC, 2, __u8) -#define SPI_IOC_WR_LSB_FIRST _IOW(SPI_IOC_MAGIC, 2, __u8) - -/* Read / Write SPI device word length (1..N) */ -#define SPI_IOC_RD_BITS_PER_WORD _IOR(SPI_IOC_MAGIC, 3, __u8) -#define SPI_IOC_WR_BITS_PER_WORD _IOW(SPI_IOC_MAGIC, 3, __u8) - -/* Read / Write SPI device default max speed hz */ -#define SPI_IOC_RD_MAX_SPEED_HZ _IOR(SPI_IOC_MAGIC, 4, __u32) -#define SPI_IOC_WR_MAX_SPEED_HZ _IOW(SPI_IOC_MAGIC, 4, __u32) - - - -#endif /* SPIDEV_H */ diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/tdo24m.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/tdo24m.h.svn-base deleted file mode 100644 index 7572d4e1..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/tdo24m.h.svn-base +++ /dev/null @@ -1,13 +0,0 @@ -#ifndef __TDO24M_H__ -#define __TDO24M_H__ - -enum tdo24m_model { - TDO24M, - TDO35S, -}; - -struct tdo24m_platform_data { - enum tdo24m_model model; -}; - -#endif /* __TDO24M_H__ */ diff --git a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/tle62x0.h.svn-base b/libdde_linux26/contrib/include/linux/spi/.svn/text-base/tle62x0.h.svn-base deleted file mode 100644 index 60b59187..00000000 --- a/libdde_linux26/contrib/include/linux/spi/.svn/text-base/tle62x0.h.svn-base +++ /dev/null @@ -1,24 +0,0 @@ -/* - * tle62x0.h - platform glue to Infineon TLE62x0 driver chips - * - * Copyright 2007 Simtec Electronics - * Ben Dooks <ben@simtec.co.uk> - * - * 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. - * - * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -*/ - -struct tle62x0_pdata { - unsigned int init_state; - unsigned int gpio_count; -}; |