diff options
| -rw-r--r-- | sys/dev/acpi/ccpmic.c | 50 |
1 files changed, 46 insertions, 4 deletions
diff --git a/sys/dev/acpi/ccpmic.c b/sys/dev/acpi/ccpmic.c index efcc749ffa7..9f6f3475161 100644 --- a/sys/dev/acpi/ccpmic.c +++ b/sys/dev/acpi/ccpmic.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ccpmic.c,v 1.1 2018/05/21 13:37:31 kettenis Exp $ */ +/* $OpenBSD: ccpmic.c,v 1.2 2018/05/21 15:00:25 kettenis Exp $ */ /* * Copyright (c) 2018 Mark Kettenis <kettenis@openbsd.org> * @@ -29,6 +29,21 @@ #include <dev/i2c/i2cvar.h> +#define CCPMIC_GPIO0P0CTLO 0x2b +#define CCPMIC_GPIO0P0CTLI 0x33 +#define CCPMIC_GPIO1P0CTLO 0x3b +#define CCPMIC_GPIO1P0CTLI 0x43 +#define CCPMIC_GPIOPANELCTL 0x52 +#define CCPMIC_GPIOCTLO_RVAL_2KUP (1 << 1) +#define CCPMIC_GPIOCTLO_DRV_REN (1 << 3) +#define CCPMIC_GPIOCTLO_DIR_OUT (1 << 5) +#define CCPMIC_GPIOCTLI_VALUE (1 << 0) + +#define CCPMIC_GPIOCTLO_INPUT \ + (CCPMIC_GPIOCTLO_DRV_REN | CCPMIC_GPIOCTLO_RVAL_2KUP) +#define CCPMIC_GPIOCTLO_OUTPUT \ + (CCPMIC_GPIOCTLO_INPUT | CCPMIC_GPIOCTLO_DIR_OUT) + #define CCPMIC_V1P8SX 0x5d #define CCPMIC_V1P2SX 0x61 #define CCPMIC_V2P85SX 0x66 @@ -40,6 +55,8 @@ #define CCPMIC_REGIONSPACE_THERMAL 0x8c #define CCPMIC_REGIONSPACE_POWER 0x8d +#define CCPMIC_NPINS 16 + struct acpi_lpat { int32_t temp; int32_t raw; @@ -295,17 +312,42 @@ ccpmic_power_opreg_handler(void *cookie, int iodir, uint64_t address, } /* - * Allegdly the GPIOs are virtual and only there to deal with a - * limitation of Microsoft Windows. + * We have 16 real GPIOs and a bunch of virtual ones. The virtual + * ones are mostly there to deal with a limitation of Microsoft + * Windows. We only implement the "panel" control GPIO, which + * actually maps onto a real GPIO. */ int ccpmic_read_pin(void *cookie, int pin) { - return 0; + struct ccpmic_softc *sc = cookie; + uint8_t reg; + + if (pin >= CCPMIC_NPINS) + return 0; + + reg = ((pin < 8) ? CCPMIC_GPIO0P0CTLO : CCPMIC_GPIO1P0CTLO) + pin % 8; + ccpmic_write_1(sc, reg, CCPMIC_GPIOCTLO_INPUT, 0); + reg = ((pin < 8) ? CCPMIC_GPIO0P0CTLI : CCPMIC_GPIO1P0CTLI) + pin % 8; + return ccpmic_read_1(sc, reg, 0) & CCPMIC_GPIOCTLI_VALUE; } void ccpmic_write_pin(void *cookie, int pin, int value) { + struct ccpmic_softc *sc = cookie; + uint8_t reg; + + if (pin == 0x5e) { + reg = CCPMIC_GPIOPANELCTL; + ccpmic_write_1(sc, reg, CCPMIC_GPIOCTLO_OUTPUT | !!value, 0); + return; + } + + if (pin >= CCPMIC_NPINS) + return; + + reg = ((pin < 8) ? CCPMIC_GPIO0P0CTLO : CCPMIC_GPIO1P0CTLO) + pin % 8; + ccpmic_write_1(sc, reg, CCPMIC_GPIOCTLO_OUTPUT | !!value, 0); } |