From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ruslan Babayev Subject: [PATCH net-next v2 1/2] i2c: acpi: export i2c_acpi_find_adapter_by_handle Date: Fri, 24 May 2019 17:53:01 -0700 Message-ID: <20190525005302.27164-1-ruslan@babayev.com> References: <20190505193435.3248-1-ruslan@babayev.com> Return-path: In-Reply-To: <20190505193435.3248-1-ruslan@babayev.com> Sender: linux-kernel-owner@vger.kernel.org To: Mika Westerberg , Wolfram Sang Cc: xe-linux-external@cisco.com, linux-i2c@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-i2c@vger.kernel.org This allows drivers to lookup i2c adapters on ACPI based systems similar to of_get_i2c_adapter_by_node() with DT based systems. Signed-off-by: Ruslan Babayev Cc: xe-linux-external@cisco.com --- drivers/i2c/i2c-core-acpi.c | 3 ++- include/linux/i2c.h | 6 ++++++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index 272800692088..964687534754 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -337,7 +337,7 @@ static int i2c_acpi_find_match_device(struct device *dev, void *data) return ACPI_COMPANION(dev) == data; } -static struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) +struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) { struct device *dev; @@ -345,6 +345,7 @@ static struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) i2c_acpi_find_match_adapter); return dev ? i2c_verify_adapter(dev) : NULL; } +EXPORT_SYMBOL_GPL(i2c_acpi_find_adapter_by_handle); static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev) { diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 1308126fc384..78f7d39ea5bc 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -21,6 +21,7 @@ #include #include /* for Host Notify IRQ */ #include /* for struct device_node */ +#include /* for acpi_handle */ #include /* for swab16 */ #include @@ -981,6 +982,7 @@ bool i2c_acpi_get_i2c_resource(struct acpi_resource *ares, u32 i2c_acpi_find_bus_speed(struct device *dev); struct i2c_client *i2c_acpi_new_device(struct device *dev, int index, struct i2c_board_info *info); +struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle); #else static inline bool i2c_acpi_get_i2c_resource(struct acpi_resource *ares, struct acpi_resource_i2c_serialbus **i2c) @@ -996,6 +998,10 @@ static inline struct i2c_client *i2c_acpi_new_device(struct device *dev, { return NULL; } +struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) +{ + return NULL; +} #endif /* CONFIG_ACPI */ #endif /* _LINUX_I2C_H */ -- 2.17.1