diff options
Diffstat (limited to 'include/linux/spi')
| -rw-r--r-- | include/linux/spi/ads7846.h | 3 | ||||
| -rw-r--r-- | include/linux/spi/corgi_lcd.h | 20 | ||||
| -rw-r--r-- | include/linux/spi/ds1305.h | 35 | ||||
| -rw-r--r-- | include/linux/spi/max7301.h | 9 | ||||
| -rw-r--r-- | include/linux/spi/mcp23s08.h | 25 | ||||
| -rw-r--r-- | include/linux/spi/orion_spi.h | 18 | ||||
| -rw-r--r-- | include/linux/spi/spi.h | 16 |
7 files changed, 115 insertions, 11 deletions
diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h index daf744017a3..05eab2f11e6 100644 --- a/include/linux/spi/ads7846.h +++ b/include/linux/spi/ads7846.h @@ -43,6 +43,9 @@ struct ads7846_platform_data { 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); diff --git a/include/linux/spi/corgi_lcd.h b/include/linux/spi/corgi_lcd.h new file mode 100644 index 00000000000..6692b3418cc --- /dev/null +++ b/include/linux/spi/corgi_lcd.h @@ -0,0 +1,20 @@ +#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/include/linux/spi/ds1305.h b/include/linux/spi/ds1305.h new file mode 100644 index 00000000000..287ec830eab --- /dev/null +++ b/include/linux/spi/ds1305.h @@ -0,0 +1,35 @@ +#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/include/linux/spi/max7301.h b/include/linux/spi/max7301.h new file mode 100644 index 00000000000..6dfd83f19b4 --- /dev/null +++ b/include/linux/spi/max7301.h @@ -0,0 +1,9 @@ +#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/include/linux/spi/mcp23s08.h b/include/linux/spi/mcp23s08.h index 835ddf47d45..22ef107d770 100644 --- a/include/linux/spi/mcp23s08.h +++ b/include/linux/spi/mcp23s08.h @@ -1,18 +1,25 @@ -/* FIXME driver should be able to handle all four slaves that - * can be hooked up to each chipselect, as well as IRQs... - */ +/* 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 can share one SPI chipselect */ - u8 slave; + /* 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]; - /* number assigned to the first GPIO */ + /* "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; - /* pins with pullups */ - u8 pullups; - void *context; /* param to setup/teardown */ int (*setup)(struct spi_device *spi, diff --git a/include/linux/spi/orion_spi.h b/include/linux/spi/orion_spi.h new file mode 100644 index 00000000000..decf6d8c77b --- /dev/null +++ b/include/linux/spi/orion_spi.h @@ -0,0 +1,18 @@ +/* + * 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/include/linux/spi/spi.h b/include/linux/spi/spi.h index 387e428f1cd..4be01bb4437 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -82,7 +82,7 @@ struct spi_device { int irq; void *controller_state; void *controller_data; - const char *modalias; + char modalias[32]; /* * likely need more hooks for more protocol options affecting how @@ -733,7 +733,7 @@ struct spi_board_info { * controller_data goes to spi_device.controller_data, * irq is copied too */ - char modalias[KOBJ_NAME_LEN]; + char modalias[32]; const void *platform_data; void *controller_data; int irq; @@ -778,8 +778,20 @@ spi_register_board_info(struct spi_board_info const *info, unsigned n) * 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 |