diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/amd/common/acpi/gpio_bank_lib.asl | 31 | ||||
| -rw-r--r-- | src/soc/amd/picasso/acpi.c | 56 |
2 files changed, 46 insertions, 41 deletions
diff --git a/src/soc/amd/common/acpi/gpio_bank_lib.asl b/src/soc/amd/common/acpi/gpio_bank_lib.asl index 9686ddc1c9..f209f448c1 100644 --- a/src/soc/amd/common/acpi/gpio_bank_lib.asl +++ b/src/soc/amd/common/acpi/gpio_bank_lib.asl @@ -2,6 +2,9 @@ #include <soc/iomap.h> +#define GPIO_OUTPUT_SHIFT 22 +#define GPIO_OUTPUT_VALUE (1 << GPIO_OUTPUT_SHIFT) + /* Get pin control MMIO address */ Method (GPAD, 0x1) { @@ -117,3 +120,31 @@ Method (GPW3, 0x2) /* Arg1 - Value for control register */ GPSB (Arg0, 3, Arg1) } + +/* + * Set GPIO Output Value + * Arg0 - GPIO Number + */ +Method (STXS, 1, Serialized) +{ + OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4) + Field (GPDW, AnyAcc, NoLock, Preserve) + { + VAL0, 32 + } + VAL0 |= GPIO_OUTPUT_VALUE +} + +/* + * Clear GPIO Output Value + * Arg0 - GPIO Number + */ +Method (CTXS, 1, Serialized) +{ + OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4) + Field (GPDW, AnyAcc, NoLock, Preserve) + { + VAL0, 32 + } + VAL0 &= ~GPIO_OUTPUT_VALUE +} diff --git a/src/soc/amd/picasso/acpi.c b/src/soc/amd/picasso/acpi.c index f5f111383e..445815ab69 100644 --- a/src/soc/amd/picasso/acpi.c +++ b/src/soc/amd/picasso/acpi.c @@ -475,45 +475,6 @@ static int acpigen_soc_get_gpio_val(unsigned int gpio_num, uint32_t mask) return 0; } -static int acpigen_soc_set_gpio_val(unsigned int gpio_num, uint32_t val) -{ - if (gpio_num >= SOC_GPIO_TOTAL_PINS) { - printk(BIOS_WARNING, "Warning: Pin %d should be smaller than" - " %d\n", gpio_num, SOC_GPIO_TOTAL_PINS); - return -1; - } - uintptr_t addr = gpio_get_address(gpio_num); - - /* Store (0x40, Local0) */ - acpigen_write_store(); - acpigen_write_integer(GPIO_PIN_OUT); - acpigen_emit_byte(LOCAL0_OP); - - acpigen_soc_get_gpio_in_local5(addr); - - if (val) { - /* Or (Local5, GPIO_PIN_OUT, Local5) */ - acpigen_write_or(LOCAL5_OP, LOCAL0_OP, LOCAL5_OP); - } else { - /* Not (GPIO_PIN_OUT, Local6) */ - acpigen_write_not(LOCAL0_OP, LOCAL6_OP); - - /* And (Local5, Local6, Local5) */ - acpigen_write_and(LOCAL5_OP, LOCAL6_OP, LOCAL5_OP); - } - - /* - * SB.GPW2 (addr, Local5) - * \_SB.GPW2 is used to write control byte in control register - * / byte 2. It is defined in gpio_lib.asl. - */ - acpigen_emit_namestring("\\_SB.GPW2"); - acpigen_write_integer(addr); - acpigen_emit_byte(LOCAL5_OP); - - return 0; -} - int acpigen_soc_read_rx_gpio(unsigned int gpio_num) { return acpigen_soc_get_gpio_val(gpio_num, GPIO_PIN_IN); @@ -524,12 +485,25 @@ int acpigen_soc_get_tx_gpio(unsigned int gpio_num) return acpigen_soc_get_gpio_val(gpio_num, GPIO_PIN_OUT); } +static int acpigen_soc_gpio_op(const char *op, unsigned int gpio_num) +{ + if (gpio_num >= SOC_GPIO_TOTAL_PINS) { + printk(BIOS_WARNING, "Warning: Pin %d should be smaller than" + " %d\n", gpio_num, SOC_GPIO_TOTAL_PINS); + return -1; + } + /* op (gpio_num) */ + acpigen_emit_namestring(op); + acpigen_write_integer(gpio_num); + return 0; +} + int acpigen_soc_set_tx_gpio(unsigned int gpio_num) { - return acpigen_soc_set_gpio_val(gpio_num, 1); + return acpigen_soc_gpio_op("\\_SB.STXS", gpio_num); } int acpigen_soc_clear_tx_gpio(unsigned int gpio_num) { - return acpigen_soc_set_gpio_val(gpio_num, 0); + return acpigen_soc_gpio_op("\\_SB.CTXS", gpio_num); } |