[coreboot-gerrit] Change in coreboot[master]: drivers/i2c/generic: Support additional device properties
Duncan Laurie (Code Review)
gerrit at coreboot.org
Tue Aug 29 17:45:34 CEST 2017
Duncan Laurie has uploaded this change for review. ( https://review.coreboot.org/21270
Change subject: drivers/i2c/generic: Support additional device properties
......................................................................
drivers/i2c/generic: Support additional device properties
Add support for providing additional free form device properties via
devicetree in order to make this driver suitable for kernel drivers
that need additional board-specific device properties.
This currently allows adding up to 10 additional properties to a device.
BUG=b:63413023
TEST=manual testing to ensure that newly added properties are in SSDT
Change-Id: I2b8ceb208f4aba01053746547def6d07c8f8f3a2
Signed-off-by: Duncan Laurie <dlaurie at google.com>
---
M src/drivers/i2c/generic/chip.h
M src/drivers/i2c/generic/generic.c
2 files changed, 11 insertions(+), 1 deletion(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/70/21270/1
diff --git a/src/drivers/i2c/generic/chip.h b/src/drivers/i2c/generic/chip.h
index c5d458b..8b285f0 100644
--- a/src/drivers/i2c/generic/chip.h
+++ b/src/drivers/i2c/generic/chip.h
@@ -19,6 +19,8 @@
#include <arch/acpi_device.h>
#include <device/i2c_simple.h>
+#define MAX_GENERIC_PROPERTY_LIST 10
+
struct drivers_i2c_generic_config {
const char *hid; /* ACPI _HID (required) */
const char *cid; /* ACPI _CID */
@@ -59,6 +61,10 @@
struct acpi_gpio enable_gpio;
/* Delay to be inserted after device is enabled. */
unsigned enable_delay_ms;
+
+ /* Generic properties for exporting device-specific data to the OS */
+ struct acpi_dp property_list[MAX_GENERIC_PROPERTY_LIST];
+ int property_count;
};
/*
diff --git a/src/drivers/i2c/generic/generic.c b/src/drivers/i2c/generic/generic.c
index b7a535e..fa27b0e 100644
--- a/src/drivers/i2c/generic/generic.c
+++ b/src/drivers/i2c/generic/generic.c
@@ -116,7 +116,8 @@
}
/* DSD */
- if (config->probed || (reset_gpio_index != -1) ||
+ if (config->probed || config->property_count ||
+ (reset_gpio_index != -1) ||
(enable_gpio_index != -1) || (irq_gpio_index != -1)) {
dsd = acpi_dp_new_table("_DSD");
if (config->probed)
@@ -134,6 +135,9 @@
acpi_dp_add_gpio(dsd, "enable-gpios", path,
enable_gpio_index, 0,
config->enable_gpio.polarity);
+ /* Add generic property list */
+ acpi_dp_add_property_list(dsd, config->property_list,
+ config->property_count);
acpi_dp_write(dsd);
}
--
To view, visit https://review.coreboot.org/21270
To unsubscribe, visit https://review.coreboot.org/settings
Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I2b8ceb208f4aba01053746547def6d07c8f8f3a2
Gerrit-Change-Number: 21270
Gerrit-PatchSet: 1
Gerrit-Owner: Duncan Laurie <dlaurie at chromium.org>
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