diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/i2c/files.i2c | 7 | ||||
| -rw-r--r-- | sys/dev/i2c/pca9532.c | 180 |
2 files changed, 186 insertions, 1 deletions
diff --git a/sys/dev/i2c/files.i2c b/sys/dev/i2c/files.i2c index 7f225434141..bb08971affb 100644 --- a/sys/dev/i2c/files.i2c +++ b/sys/dev/i2c/files.i2c @@ -1,4 +1,4 @@ -# $OpenBSD: files.i2c,v 1.35 2006/06/15 20:50:44 drahn Exp $ +# $OpenBSD: files.i2c,v 1.36 2006/06/17 04:43:01 drahn Exp $ # $NetBSD: files.i2c,v 1.3 2003/10/20 16:24:10 briggs Exp $ define i2c {[addr = -1], [size = -1]} @@ -117,3 +117,8 @@ file dev/i2c/rs5c372.c ricohrtc device fintek attach fintek at i2c file dev/i2c/fintek.c fintek + +# Phillips Semiconductor PCA9532 +device pcaled: gpiobus +attach pcaled at i2c +file dev/i2c/pca9532.c pcaled diff --git a/sys/dev/i2c/pca9532.c b/sys/dev/i2c/pca9532.c new file mode 100644 index 00000000000..406a80d2745 --- /dev/null +++ b/sys/dev/i2c/pca9532.c @@ -0,0 +1,180 @@ +/* $OpenBSD: pca9532.c,v 1.1 2006/06/17 04:43:01 drahn Exp $ */ +/* + * Copyright (c) 2006 Dale Rahn <drahn@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/device.h> +#include <sys/kernel.h> +#include <sys/fcntl.h> +#include <sys/uio.h> +#include <sys/conf.h> +#include <sys/gpio.h> + + +#include <dev/i2c/i2cvar.h> +#include <dev/gpio/gpiovar.h> + +#include "gpio.h" + +/* driver for PCA 9532 */ + +#define PCALED_ADDR 0x60 + +#define PCALED_GPIO_NPINS 16 + +struct pcaled_softc { + struct device sc_dev; + i2c_tag_t sc_tag; + int sc_addr; + struct gpio_chipset_tag sc_gpio_gc; + struct gpio_pin sc_gpio_pin[PCALED_GPIO_NPINS]; + +}; + +int pcaled_match(struct device *, void *, void *); +void pcaled_attach(struct device *, struct device *, void *); +int pcaled_gpio_pin_read(void *arg, int pin); +void pcaled_gpio_pin_write (void *arg, int pin, int value); +void pcaled_gpio_pin_ctl (void *arg, int pin, int flags); + +struct cfattach pcaled_ca = { + sizeof(struct pcaled_softc), pcaled_match, pcaled_attach +}; + +struct cfdriver pcaled_cd = { + NULL, "pcaled", DV_DULL +}; + +int +pcaled_match(struct device *parent, void *v, void *arg) +{ + struct i2c_attach_args *ia = arg; + int ok = 0; + uint8_t cmd, data; + + if (ia->ia_addr != PCALED_ADDR) + return (0); + /* attempt to read input register 0 */ + iic_acquire_bus(ia->ia_tag, I2C_F_POLL); + cmd = 0; + if (iic_exec(ia->ia_tag, I2C_OP_READ_WITH_STOP, ia->ia_addr, + &cmd, 1, &data, 1, I2C_F_POLL)) + goto fail; + ok = 1; +fail: + iic_release_bus(ia->ia_tag, I2C_F_POLL); + return (1); +} + +void +pcaled_attach(struct device *parent, struct device *self, void *arg) +{ + struct pcaled_softc *sc = (void *)self; + struct i2c_attach_args *ia = arg; + struct gpiobus_attach_args gba; + int i; + uint8_t cmd, data; + + sc->sc_tag = ia->ia_tag; + sc->sc_addr = ia->ia_addr; + + iic_acquire_bus(sc->sc_tag, I2C_F_POLL); + + for (i = 0; i < PCALED_GPIO_NPINS; i++) { + sc->sc_gpio_pin[i].pin_num = i; + sc->sc_gpio_pin[i].pin_caps = GPIO_PIN_INOUT; + if (i < 8) + cmd = 0; + else + cmd = 1; + if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, sc->sc_addr, + &cmd, 1, &data, 1, I2C_F_POLL)) + goto fail; /* XXX */ + sc->sc_gpio_pin[i].pin_state = (data >> (i & 3)) & 1; + } + sc->sc_gpio_gc.gp_cookie = sc; + sc->sc_gpio_gc.gp_pin_read = pcaled_gpio_pin_read; + sc->sc_gpio_gc.gp_pin_write = pcaled_gpio_pin_write; + sc->sc_gpio_gc.gp_pin_ctl = pcaled_gpio_pin_ctl; + + printf(": PCA9532 LED controller\n"); + + gba.gba_name = "gpio"; + gba.gba_gc = &sc->sc_gpio_gc; + gba.gba_pins = sc->sc_gpio_pin; + gba.gba_npins = PCALED_GPIO_NPINS; +#if NGPIO > 0 + config_found(&sc->sc_dev, &gba, gpiobus_print); +#endif + +fail: + iic_release_bus(sc->sc_tag, I2C_F_POLL); +} + +int +pcaled_gpio_pin_read(void *arg, int pin) +{ + struct pcaled_softc *sc = arg; + iic_acquire_bus(sc->sc_tag, I2C_F_POLL); + uint8_t cmd, data; + + if (pin < 8) + cmd = 0; + else + cmd = 1; + if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, sc->sc_addr, + &cmd, 1, &data, 1, I2C_F_POLL)) + goto fail; /* XXX */ + +fail: + iic_release_bus(sc->sc_tag, I2C_F_POLL); + return (data >> (pin & 3)) & 1; +} + +void +pcaled_gpio_pin_write (void *arg, int pin, int value) +{ + struct pcaled_softc *sc = arg; + uint8_t cmd, data; + if (pin < 4) + cmd = 6; + else if (pin < 8) + cmd = 7; + else if (pin < 12) + cmd = 8; + else + cmd = 9; + if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, sc->sc_addr, + &cmd, 1, &data, 1, I2C_F_POLL)) + goto fail; /* XXX */ + data &= ~(0x3 << (2*(pin & 3))); + data |= (value << (2*(pin & 3))); + + if (iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP, sc->sc_addr, + &cmd, 1, &data, 1, I2C_F_POLL)) + goto fail; /* XXX */ + +fail: + iic_release_bus(sc->sc_tag, I2C_F_POLL); +} + +void +pcaled_gpio_pin_ctl (void *arg, int pin, int flags) +{ + /* XXX all pins are inout */ +} + |