linux-stable/drivers/pcmcia/max1600.h
Russell King bebdf98a78 pcmcia: add MAX1600 library
Add a library for the MAX1600 PCMCIA power switch device.  This is a
dual-channel device, controlled via four GPIO signals per channel.
Two signals control the Vcc output, and two control the Vpp output.

Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2018-12-04 22:37:38 +00:00

32 lines
577 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef MAX1600_H
#define MAX1600_H
struct gpio_desc;
enum {
MAX1600_GPIO_0VCC = 0,
MAX1600_GPIO_1VCC,
MAX1600_GPIO_0VPP,
MAX1600_GPIO_1VPP,
MAX1600_GPIO_MAX,
MAX1600_CHAN_A,
MAX1600_CHAN_B,
MAX1600_CODE_LOW,
MAX1600_CODE_HIGH,
};
struct max1600 {
struct gpio_desc *gpio[MAX1600_GPIO_MAX];
struct device *dev;
unsigned int code;
};
int max1600_init(struct device *dev, struct max1600 **ptr,
unsigned int channel, unsigned int code);
int max1600_configure(struct max1600 *, unsigned int vcc, unsigned int vpp);
#endif