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acpi: Support generation of I2C descriptor

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Add a function to write a GPIO descriptor to the generated ACPI code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2020-07-07 13:11:48 -06:00
committed by Bin Meng
parent 4ebc940b39
commit 31e1787ec1
5 changed files with 196 additions and 0 deletions
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13
drivers/rtc/sandbox_rtc.c
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@@ -9,6 +9,7 @@
#include <i2c.h>
#include <rtc.h>
#include <asm/rtc.h>
#include <dm/acpi.h>
#define REG_COUNT 0x80
@@ -67,6 +68,17 @@ static int sandbox_rtc_write8(struct udevice *dev, unsigned int reg, int val)
return dm_i2c_reg_write(dev, reg, val);
}
#if CONFIG_IS_ENABLED(ACPIGEN)
static int sandbox_rtc_get_name(const struct udevice *dev, char *out_name)
{
return acpi_copy_name(out_name, "RTCC");
}
struct acpi_ops sandbox_rtc_acpi_ops = {
.get_name = sandbox_rtc_get_name,
};
#endif
static const struct rtc_ops sandbox_rtc_ops = {
.get = sandbox_rtc_get,
.set = sandbox_rtc_set,
@@ -85,4 +97,5 @@ U_BOOT_DRIVER(rtc_sandbox) = {
.id = UCLASS_RTC,
.of_match = sandbox_rtc_ids,
.ops = &sandbox_rtc_ops,
ACPI_OPS_PTR(&sandbox_rtc_acpi_ops)
};