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https://github.com/edk2-porting/linux-next.git
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e952805d2d
Add the MAX7300-I2C variant of the MAX7301-SPI version. Both chips share the same core logic, so the generic part of the in-kernel SPI-driver is refactored into a generic part. The I2C and SPI specific funtions are then wrapped into seperate drivers picking up the generic part. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Juergen Beisert <j.beisert@pengutronix.de> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
28 lines
675 B
C
28 lines
675 B
C
#ifndef LINUX_SPI_MAX7301_H
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#define LINUX_SPI_MAX7301_H
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#include <linux/gpio.h>
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/*
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* Some registers must be read back to modify.
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* To save time we cache them here in memory
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*/
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struct max7301 {
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struct mutex lock;
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u8 port_config[8]; /* field 0 is unused */
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u32 out_level; /* cached output levels */
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struct gpio_chip chip;
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struct device *dev;
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int (*write)(struct device *dev, unsigned int reg, unsigned int val);
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int (*read)(struct device *dev, unsigned int reg);
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};
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struct max7301_platform_data {
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/* number assigned to the first GPIO */
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unsigned base;
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};
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extern int __max730x_remove(struct device *dev);
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extern int __max730x_probe(struct max7301 *ts);
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#endif
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