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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2019-07-30 13:43:37 +0300
committerLinus Walleij <linus.walleij@linaro.org>2019-07-31 00:59:19 +0200
commit2838bf941b120ec846a3903db13e319368d51b08 (patch)
tree86b5dee2e09363d0605cd4592d70d75e75778cf0 /include/linux/gpio
parent77cb907abe6c4b399ad77f9b6c1d77d44a435de3 (diff)
gpiolib-acpi: Move acpi_dev_add_driver_gpios() et al to consumer.h
The API, which belongs to GPIO library, is foreign to ACPI headers. Earlier we moved out I²C out of the latter, and now it's time for acpi_dev_add_driver_gpios() et al. For time being the acpi_gpio_get_irq_resource() and acpi_dev_gpio_irq_get() are left untouched as they need more thought about. Note, it requires uninline acpi_dev_remove_driver_gpios() to keep purity of consumer.h. Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Liam Girdwood <liam.r.girdwood@linux.intel.com> Cc: Jie Yang <yang.jie@linux.intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: alsa-devel@alsa-project.org (moderated list:INTEL ASoC DRIVERS) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190730104337.21235-3-andriy.shevchenko@linux.intel.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
-rw-r--r--include/linux/gpio/consumer.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index 6019d4d128c5..aac617371b60 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -602,6 +602,63 @@ struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev,
#endif /* CONFIG_GPIOLIB */
+struct acpi_gpio_params {
+ unsigned int crs_entry_index;
+ unsigned int line_index;
+ bool active_low;
+};
+
+struct acpi_gpio_mapping {
+ const char *name;
+ const struct acpi_gpio_params *data;
+ unsigned int size;
+
+/* Ignore IoRestriction field */
+#define ACPI_GPIO_QUIRK_NO_IO_RESTRICTION BIT(0)
+/*
+ * When ACPI GPIO mapping table is in use the index parameter inside it
+ * refers to the GPIO resource in _CRS method. That index has no
+ * distinction of actual type of the resource. When consumer wants to
+ * get GpioIo type explicitly, this quirk may be used.
+ */
+#define ACPI_GPIO_QUIRK_ONLY_GPIOIO BIT(1)
+
+ unsigned int quirks;
+};
+
+#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_ACPI)
+
+struct acpi_device;
+
+int acpi_dev_add_driver_gpios(struct acpi_device *adev,
+ const struct acpi_gpio_mapping *gpios);
+void acpi_dev_remove_driver_gpios(struct acpi_device *adev);
+
+int devm_acpi_dev_add_driver_gpios(struct device *dev,
+ const struct acpi_gpio_mapping *gpios);
+void devm_acpi_dev_remove_driver_gpios(struct device *dev);
+
+#else /* CONFIG_GPIOLIB && CONFIG_ACPI */
+
+struct acpi_device;
+
+static inline int acpi_dev_add_driver_gpios(struct acpi_device *adev,
+ const struct acpi_gpio_mapping *gpios)
+{
+ return -ENXIO;
+}
+static inline void acpi_dev_remove_driver_gpios(struct acpi_device *adev) {}
+
+static inline int devm_acpi_dev_add_driver_gpios(struct device *dev,
+ const struct acpi_gpio_mapping *gpios)
+{
+ return -ENXIO;
+}
+static inline void devm_acpi_dev_remove_driver_gpios(struct device *dev) {}
+
+#endif /* CONFIG_GPIOLIB && CONFIG_ACPI */
+
+
#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS)
int gpiod_export(struct gpio_desc *desc, bool direction_may_change);