diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/i2c/rx6110sa/chip.h | 1 | ||||
| -rw-r--r-- | src/drivers/i2c/rx6110sa/rx6110sa.c | 67 | ||||
| -rw-r--r-- | src/drivers/i2c/rx6110sa/rx6110sa.h | 4 |
3 files changed, 70 insertions, 2 deletions
diff --git a/src/drivers/i2c/rx6110sa/chip.h b/src/drivers/i2c/rx6110sa/chip.h index 46ef7f1e3a..4df95806ac 100644 --- a/src/drivers/i2c/rx6110sa/chip.h +++ b/src/drivers/i2c/rx6110sa/chip.h @@ -3,6 +3,7 @@ #include "rx6110sa.h" struct drivers_i2c_rx6110sa_config { + unsigned int bus_speed; /* Bus clock in Hz (default 400 kHz)*/ /* The day (of the week) is indicated by 7 bits, bit 0 to bit 6. */ unsigned char user_weekday; /* User day of the week to set */ unsigned char user_day; /* User day to set */ diff --git a/src/drivers/i2c/rx6110sa/rx6110sa.c b/src/drivers/i2c/rx6110sa/rx6110sa.c index ca39bdb1bc..2b8b9b28f0 100644 --- a/src/drivers/i2c/rx6110sa/rx6110sa.c +++ b/src/drivers/i2c/rx6110sa/rx6110sa.c @@ -1,7 +1,10 @@ /* SPDX-License-Identifier: GPL-2.0-only */ -#include <device/i2c_bus.h> +#include <acpi/acpi_device.h> +#include <acpi/acpigen.h> #include <device/device.h> +#include <device/i2c.h> +#include <device/i2c_bus.h> #include <version.h> #include <console/console.h> #include <bcd.h> @@ -163,11 +166,71 @@ static void rx6110sa_init(struct device *dev) rx6110sa_write(dev, CTRL_REG, reg); } +#if CONFIG(HAVE_ACPI_TABLES) +static void rx6110sa_fill_ssdt(const struct device *dev) +{ + struct drivers_i2c_rx6110sa_config *config = dev->chip_info; + const char *scope = acpi_device_scope(dev); + enum i2c_speed bus_speed; + + if (!scope) + return; + + switch (config->bus_speed) { + case I2C_SPEED_STANDARD: + case I2C_SPEED_FAST: + bus_speed = config->bus_speed; + break; + default: + printk(BIOS_INFO, "%s: Bus speed unsupported, fall back to %d kHz!\n", + dev_path(dev), I2C_SPEED_STANDARD / 1000); + bus_speed = I2C_SPEED_STANDARD; + break; + } + + struct acpi_i2c i2c = { + .address = dev->path.i2c.device, + .mode_10bit = dev->path.i2c.mode_10bit, + .speed = bus_speed, + .resource = scope, + }; + + /* Device */ + acpigen_write_scope(scope); + acpigen_write_device(acpi_device_name(dev)); + acpigen_write_name_string("_HID", RX6110SA_HID_NAME); + acpigen_write_name_string("_DDN", RX6110SA_HID_DESC); + acpigen_write_STA(acpi_device_status(dev)); + + /* Resources */ + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + acpi_device_write_i2c(&i2c); + + acpigen_write_resourcetemplate_footer(); + + acpigen_pop_len(); /* Device */ + acpigen_pop_len(); /* Scope */ + + printk(BIOS_INFO, "%s: %s at %s\n", acpi_device_path(dev), + dev->chip_ops->name, dev_path(dev)); +} + +static const char *rx6110sa_acpi_name(const struct device *dev) +{ + return RX6110SA_ACPI_NAME; +} +#endif + static struct device_operations rx6110sa_ops = { .read_resources = noop_read_resources, .set_resources = noop_set_resources, .init = rx6110sa_init, - .final = rx6110sa_final + .final = rx6110sa_final, +#if CONFIG(HAVE_ACPI_TABLES) + .acpi_name = rx6110sa_acpi_name, + .acpi_fill_ssdt = rx6110sa_fill_ssdt, +#endif }; static void rx6110sa_enable(struct device *dev) diff --git a/src/drivers/i2c/rx6110sa/rx6110sa.h b/src/drivers/i2c/rx6110sa/rx6110sa.h index 187bad424f..73f43b3a5b 100644 --- a/src/drivers/i2c/rx6110sa/rx6110sa.h +++ b/src/drivers/i2c/rx6110sa/rx6110sa.h @@ -7,6 +7,10 @@ #define RX6110SA_SLAVE_ADR 0x32 #define RX6110SA_I2C_CONTROLLER 0 +#define RX6110SA_ACPI_NAME "ERX6" +#define RX6110SA_HID_NAME "RX6110SA" +#define RX6110SA_HID_DESC "Real Time Clock" + /* Register layout */ #define SECOND_REG 0x10 #define MINUTE_REG 0x11 |