diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-05 09:31:03 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-05 09:31:03 -0700 |
commit | 00341b5301009ba6f36ee3298e69b649ac5540ff (patch) | |
tree | 0f0cdcabd20b2834f30b67b50795c49989ced65a /drivers/acpi | |
parent | 45d9a2220f6004b47c362cc7fc7cf9a73cb6353a (diff) | |
parent | b720423a2627f045133bec39a31fe2bc0dab86f3 (diff) |
Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"Highlights:
- OF and ACPI helpers are now included in the core, and not in
external files anymore. This removes dependency problems for
modules and is cleaner, in general.
- mv64xxx-driver gains fifo usage to support mv78230
- imx-driver overhaul to support VF610
- various cleanups, most notably related to devm_* and CONFIG_PM
usage
- driver bugfixes and smaller feature additions"
* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (51 commits)
i2c: rcar: add rcar-H2 support
i2c: sirf: retry 3 times as sometimes we get random noack and timeout
i2c: sirf: support reverse direction of address
i2c: sirf: fix the typo for setting bitrate to less than 100k
i2c: sirf: we need to wait I2C_RESET status in resume
i2c: sirf: reset i2c controller early after we get a noack
i2c: designware: get SDA hold time, HCNT and LCNT configuration from ACPI
i2c: designware: make HCNT/LCNT values configurable
i2c: mpc: cleanup clock API use
i2c: pnx: fix error return code in i2c_pnx_probe()
i2c: ismt: add error return code in probe()
i2c: mv64xxx: fix typo in binding documentation
i2c: imx: use exact SoC revision to document binding
i2c: move ACPI helpers into the core
i2c: move OF helpers into the core
i2c: mv64xxx: Fix timing issue on Armada XP (errata FE-8471889)
i2c: mv64xxx: Add I2C Transaction Generator support
i2c: powermac: fix return path on error
Documentation: i2c: Fix example in instantiating-devices
i2c: tiny-usb: do not use stack as URB transfer_buffer
...
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/Kconfig | 6 | ||||
-rw-r--r-- | drivers/acpi/Makefile | 1 | ||||
-rw-r--r-- | drivers/acpi/acpi_i2c.c | 103 |
3 files changed, 0 insertions, 110 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 3278a210c43..22327e6a723 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -162,12 +162,6 @@ config ACPI_DOCK This driver supports ACPI-controlled docking stations and removable drive bays such as the IBM Ultrabay and the Dell Module Bay. -config ACPI_I2C - def_tristate I2C - depends on I2C - help - ACPI I2C enumeration support. - config ACPI_PROCESSOR tristate "Processor" select THERMAL diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index 81dbeb83bb4..cdaf68b58b0 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -73,7 +73,6 @@ obj-$(CONFIG_ACPI_HED) += hed.o obj-$(CONFIG_ACPI_EC_DEBUGFS) += ec_sys.o obj-$(CONFIG_ACPI_CUSTOM_METHOD)+= custom_method.o obj-$(CONFIG_ACPI_BGRT) += bgrt.o -obj-$(CONFIG_ACPI_I2C) += acpi_i2c.o # processor has its own "processor." module_param namespace processor-y := processor_driver.o processor_throttling.o diff --git a/drivers/acpi/acpi_i2c.c b/drivers/acpi/acpi_i2c.c deleted file mode 100644 index a82c7626aa9..00000000000 --- a/drivers/acpi/acpi_i2c.c +++ /dev/null @@ -1,103 +0,0 @@ -/* - * ACPI I2C enumeration support - * - * Copyright (C) 2012, Intel Corporation - * Author: Mika Westerberg <mika.westerberg@linux.intel.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/acpi.h> -#include <linux/device.h> -#include <linux/export.h> -#include <linux/i2c.h> -#include <linux/ioport.h> - -ACPI_MODULE_NAME("i2c"); - -static int acpi_i2c_add_resource(struct acpi_resource *ares, void *data) -{ - struct i2c_board_info *info = data; - - if (ares->type == ACPI_RESOURCE_TYPE_SERIAL_BUS) { - struct acpi_resource_i2c_serialbus *sb; - - sb = &ares->data.i2c_serial_bus; - if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_I2C) { - info->addr = sb->slave_address; - if (sb->access_mode == ACPI_I2C_10BIT_MODE) - info->flags |= I2C_CLIENT_TEN; - } - } else if (info->irq < 0) { - struct resource r; - - if (acpi_dev_resource_interrupt(ares, 0, &r)) - info->irq = r.start; - } - - /* Tell the ACPI core to skip this resource */ - return 1; -} - -static acpi_status acpi_i2c_add_device(acpi_handle handle, u32 level, - void *data, void **return_value) -{ - struct i2c_adapter *adapter = data; - struct list_head resource_list; - struct i2c_board_info info; - struct acpi_device *adev; - int ret; - - if (acpi_bus_get_device(handle, &adev)) - return AE_OK; - if (acpi_bus_get_status(adev) || !adev->status.present) - return AE_OK; - - memset(&info, 0, sizeof(info)); - info.acpi_node.handle = handle; - info.irq = -1; - - INIT_LIST_HEAD(&resource_list); - ret = acpi_dev_get_resources(adev, &resource_list, - acpi_i2c_add_resource, &info); - acpi_dev_free_resource_list(&resource_list); - - if (ret < 0 || !info.addr) - return AE_OK; - - strlcpy(info.type, dev_name(&adev->dev), sizeof(info.type)); - if (!i2c_new_device(adapter, &info)) { - dev_err(&adapter->dev, - "failed to add I2C device %s from ACPI\n", - dev_name(&adev->dev)); - } - - return AE_OK; -} - -/** - * acpi_i2c_register_devices - enumerate I2C slave devices behind adapter - * @adapter: pointer to adapter - * - * Enumerate all I2C slave devices behind this adapter by walking the ACPI - * namespace. When a device is found it will be added to the Linux device - * model and bound to the corresponding ACPI handle. - */ -void acpi_i2c_register_devices(struct i2c_adapter *adapter) -{ - acpi_handle handle; - acpi_status status; - - handle = ACPI_HANDLE(adapter->dev.parent); - if (!handle) - return; - - status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1, - acpi_i2c_add_device, NULL, - adapter, NULL); - if (ACPI_FAILURE(status)) - dev_warn(&adapter->dev, "failed to enumerate I2C slaves\n"); -} -EXPORT_SYMBOL_GPL(acpi_i2c_register_devices); |