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| author | Charles Keepax <ckeepax@opensource.cirrus.com> | 2019-06-27 10:24:07 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2019-06-29 13:17:27 +0200 |
| commit | c2223ddcfe64864c9a6541c0ffe22d96255597e0 (patch) | |
| tree | ae561db584464254634b4559b86e46f939a0a391 /drivers/i2c/i2c-core-acpi.c | |
| parent | 1d7534b6adcd3e4a9673c4e7fdc5bf4770f5ab81 (diff) | |
| download | linux-c2223ddcfe64864c9a6541c0ffe22d96255597e0.tar.bz2 | |
i2c: acpi: Use available IRQ helper functions
Use the available IRQ helper functions, most of the functions have
additional helpful side affects like configuring the trigger type of the
IRQ.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/i2c-core-acpi.c')
| -rw-r--r-- | drivers/i2c/i2c-core-acpi.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index 964687534754..d3474d1f5e09 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -137,13 +137,23 @@ static int i2c_acpi_do_lookup(struct acpi_device *adev, return 0; } +static int i2c_acpi_add_resource(struct acpi_resource *ares, void *data) +{ + int *irq = data; + struct resource r; + + if (*irq <= 0 && acpi_dev_resource_interrupt(ares, 0, &r)) + *irq = i2c_dev_irq_from_resources(&r, 1); + + return 1; /* No need to add resource to the list */ +} + static int i2c_acpi_get_info(struct acpi_device *adev, struct i2c_board_info *info, struct i2c_adapter *adapter, acpi_handle *adapter_handle) { struct list_head resource_list; - struct resource_entry *entry; struct i2c_acpi_lookup lookup; int ret; @@ -176,17 +186,11 @@ static int i2c_acpi_get_info(struct acpi_device *adev, /* Then fill IRQ number if any */ INIT_LIST_HEAD(&resource_list); - ret = acpi_dev_get_resources(adev, &resource_list, NULL, NULL); + ret = acpi_dev_get_resources(adev, &resource_list, + i2c_acpi_add_resource, &info->irq); if (ret < 0) return -EINVAL; - resource_list_for_each_entry(entry, &resource_list) { - if (resource_type(entry->res) == IORESOURCE_IRQ) { - info->irq = entry->res->start; - break; - } - } - acpi_dev_free_resource_list(&resource_list); acpi_set_modalias(adev, dev_name(&adev->dev), info->type, |