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* dm: Export device_remove_children / device_unbind_childrenHans de Goede2015-07-21-0/+26
| | | | | | | | These functions are useful to remove all children from an usb bus before rescanning the bus. Give them a better name and export them. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: Add platform data advice and admonishmentSimon Glass2015-07-21-0/+9
| | | | | | | | We should guide people more strongly towards device tree to avoid the proliferation of platform data structures. Add documentation to the driver model README, and also the platform data header file. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Add a clock uclassSimon Glass2015-07-21-0/+1
| | | | | | | | | | | | | | | | | | | | | | | Clocks are an important feature of platforms and have become increasing complex with time. Most modern SoCs have multiple PLLs and dozens of clock dividers which distribute clocks to on-chip peripherals. Some SoC implementations have a clock API which is private to that SoC family, e.g. Tegra and Exynos. This is useful but it would be better to have a common API that can be understood and used throughout U-Boot. Add a simple clock API as a starting point. It supports querying and setting the rate of a clock. Each clock is a device. To reduce memory and processing overhead the concept of peripheral clocks is provided. These do not need to be explicit devices - it is possible to write a driver that can adjust the I2C clock (for example) without an explicit I2C clock device. This can dramatically reduce the number of devices (and associated overhead) in a complex SoC. Clocks are referenced by a number, and it is expected that SoCs will define that numbering themselves via an enum. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Add a system reset uclassSimon Glass2015-07-21-0/+1
| | | | | | | | | | | | | | | | It is common for system reset to be available at multiple levels in modern hardware. For example, an SoC may provide a reset option, and a board may provide its own reset for reasons of security or thoroughness. It is useful to be able to model this hardware without hard-coding the behaviour in the SoC or board. Also there is a distinction sometimes between resetting just the CPU (leaving GPIO state alone) and resetting all the PMICs, just cutting power. To achieve this, add a simple system reset uclass. It allows multiple devices to provide reset functionality and provides a way to walk through them, requesting a particular reset type until is it provided. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Add support for RAM driversSimon Glass2015-07-21-0/+1
| | | | | | | | Add support for a driver which sets up DRAM and can return information about the amount of RAM available. This is a first step towards moving RAM init to driver model. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: mmc: Add an MMC uclassSimon Glass2015-07-21-0/+1
| | | | | | | Add basic support for MMC, providing a uclass which can set up an MMC device. This allows MMC drivers to move to using driver model. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Add support for LEDsSimon Glass2015-07-21-0/+1
| | | | | | | | | Add a simple uclass for LEDs, so that these can be controlled by the device tree and activated when needed. LEDs are referred to by their label. This implementation requires a driver for each type of LED (e.g GPIO, I2C). Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Add support for generic system controllers (syscon)Simon Glass2015-07-21-0/+1
| | | | | | | | | | | Many SoCs have a number of system controllers which are dealt with as a group by a single driver. It is a pain to have to add lots of compatible strings and/or separate drivers for each. Instead we can identify the controllers by a number and request the address of the one we want. Add a simple implementation of this which can be used by SoC driver code. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Correct device_get_child_by_of_offset() parameterSimon Glass2015-07-21-1/+1
| | | | | | This parameter is named 'seq' but should be named 'of_offset'. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Add a function to find any device from device treeSimon Glass2015-07-21-0/+14
| | | | | | | | | | | | In some rare cases it is useful to be able to locate a device given a device tree node offset. An example is when you have an alias that points to a node and you want to find the associated device. The device may be SPI, MMC or something else, but you don't need to know the uclass to find it. Add a function to do a global search for a device, given its device tree offset. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Move the tree/uclass dump code into its own fileSimon Glass2015-07-21-0/+6
| | | | | | | | | | In SPL it is sometimes useful to be able to obtain a dump of the current driver model state. Since commands are not available, provide a way to directly call the functions to output this information. Adjust the existing commands to use these functions. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Sort the uclass IDs after the tegra/PMIC additionSimon Glass2015-06-04-5/+3
| | | | | | | | Tidy up the sort order again. Signed-off-by: Simon Glass <sjg@chromium.org> Reported-by: Joe Hershberger <joe.hershberger@gmail.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* test: dm: Move the dm tests over to the ut commandJoe Hershberger2015-05-21-11/+0
| | | | | | | | Unify the command for running unit tests further by moving the "dm test" command over to "ut dm". Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Simon Glass <sjg@chromium.org>
* test: Generalize the unit test frameworkJoe Hershberger2015-05-21-135/+7
| | | | | | | | | Separate the ability to define tests and assert status of test functions from the dm tests so they can be used more consistently throughout all tests. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* dm: regulator: add implementation of driver model regulator uclassPrzemyslaw Marczak2015-05-14-0/+1
| | | | | | | | | | | | | | | | | | This commit introduces the implementation of dm regulator API. Device tree support allows for auto binding. And by the basic uclass operations, it allows to driving the devices in a common way. For detailed informations, please look into the header file. Core files: - drivers/power/regulator-uclass.c - provides regulator common functions api - include/power/regulator.h - define all structures required by the regulator Changes: - new uclass-id: UCLASS_REGULATOR - new config: CONFIG_DM_REGULATOR Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: pmic: add implementation of driver model pmic uclassPrzemyslaw Marczak2015-05-14-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | This commit introduces the PMIC uclass implementation. It allows providing the basic I/O interface for PMIC devices. For the multi-function PMIC devices, this can be used as I/O parent device, for each IC's interface. Then, each PMIC particular function can be provided by the child device's operations, and the child devices will use its parent for read/write by the common API. Core files: - 'include/power/pmic.h' - 'drivers/power/pmic/pmic-uclass.c' The old pmic framework is still kept and is independent. For more detailed informations, please look into the header file. Changes: - new uclass-id: UCLASS_PMIC - new config: CONFIG_DM_PMIC Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: video: Add a uclass for display portSimon Glass2015-05-13-0/+1
| | | | | | | | | eDP (Embedded DisplayPort) is a standard widely used in laptops to drive LCD panels. Add a uclass for this which supports a few simple operations. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Tom Warren <twarren@nvidia.com>
* dm: core: Sort the uclassesSimon Glass2015-05-13-16/+16
| | | | | | | Sort uclasses into alphabetical order and tidy up the comments. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
* dm: rtc: Add a uclass for real-time clocksSimon Glass2015-05-05-0/+1
| | | | | | | | | Add a uclass for real-time clocks which support getting the current time, setting it and resetting the chip to a known-working state. Some RTCs have additional registers which can be used to store settings, so also provide an interface to these. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Implement a CPU uclassSimon Glass2015-04-29-0/+1
| | | | | | | | | | It is useful to be able to keep track of the available CPUs in a multi-CPU system. This uclass is mostly intended for use with SMP systems. The uclass provides methods for getting basic information about each CPU. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* dm: core: Add a function to bind a driver for a device tree nodeSimon Glass2015-04-29-0/+16
| | | | | | | | Some device tree nodes do not have compatible strings but do require drivers. This is pretty rare, and somewhat unfortunate. Add a function to permit creation of a driver for any device tree node. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Remove unbind operations when not requiredSimon Glass2015-04-23-0/+8
| | | | | | | | The CONFIG_DM_DEVICE_REMOVE option takes out code related to removing devices. It should also remove the 'unbind' code since if we cannot remove we probably don't need to unbind. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: precise comments for get/find device by namePrzemyslaw Marczak2015-04-22-2/+2
| | | | | | | | | | | | The functions: - uclass_find_device_by_name() - uclass_get_device_by_name() searches the required device for the exactly given name. This patch, presice this fact for both function's comments. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* dm: core: remove type 'static' of function uclass_get_device_tail()Przemyslaw Marczak2015-04-22-3/+18
| | | | | | | | | | | Uclass API provides a few functions for get/find the device. To provide a complete function set of uclass-internal functions, for use by the drivers, the function uclass_get_device_tail() should be non-static. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* dm: core: device: add function: dev_get_uclass_name()Przemyslaw Marczak2015-04-22-0/+10
| | | | | | | | | | | | | This commit extends the driver model device's API by function: - dev_get_uclass_name() And this function returns the device's uclass driver name if: - given dev pointer, is non_NULL otherwise, the NULL pointer is returned. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* dm: core: device: add function: dev_get_driver_ops()Przemyslaw Marczak2015-04-22-0/+11
| | | | | | | | | | | | | | This commit extends the driver model device's API by function: - dev_get_driver_ops() And this function returns the device's driver's operations if given: - dev pointer, is non-NULL - dev->driver->ops pointer, is non-NULL in other case the, the NULL pointer is returned. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* dm: core: uclass: add function: uclass_get_device_by_name()Przemyslaw Marczak2015-04-22-0/+15
| | | | | | | | | | | | | | | | | | | | | | This commit extends the driver model uclass's API by function: - uclass_get_device_by_name() And this function returns the device if: - uclass with given ID, exists, - device with exactly given name(dev->name), exists, - device probe, doesn't return an error. The returned device is activated and ready to use. Note: This function returns the first device, which name is equal to the given one. This means, that using this function you must assume, that the device name is unique in the given uclass's ID device list. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* dm: core: uclass: add function: uclass_find_device_by_name()Przemyslaw Marczak2015-04-22-23/+38
| | | | | | | | | | | | | | | | | | | | | | | | This commit extends the driver model uclass's API by function: - uclass_find_device_by_name() And this function returns the device if: - uclass with given ID, exists, - device with exactly given name(dev->name), exists. The returned device is not activated - need to be probed before use. Note: This function returns the first device, which name is equal to the given one. This means, that using this function you must assume, that the device name is unique in the given uclass's ID device list. uclass-internal.h: cleanup - move the uclass_find_device_by_seq() declaration and description, near the other uclass_find*() functions. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* dm: test: Add tests for device's uclass platform dataPrzemyslaw Marczak2015-04-22-0/+20
| | | | | | | | | | | | | | | | | | | | | This test introduces new test structure type:dm_test_perdev_uc_pdata. The structure consists of three int values only. For the test purposes, three pattern values are defined by enum, starting with TEST_UC_PDATA_INTVAL1. This commit adds two test cases for uclass platform data: - Test: dm_test_autobind_uclass_pdata_alloc - this tests if: * uclass driver sets: .per_device_platdata_auto_alloc_size field * the devices's: dev->uclass_platdata is non-NULL - Test: dm_test_autobind_uclass_pdata_valid - this tests: * if the devices's: dev->uclass_platdata is non-NULL * the structure of type 'dm_test_perdev_uc_pdata' allocated at address pointed by dev->uclass_platdata. Each structure field, should be equal to proper pattern data, starting from .intval1 == TEST_UC_PDATA_INTVAL1. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* dm: core: Extend struct udevice by '.uclass_platdata' field.Przemyslaw Marczak2015-04-22-1/+20
| | | | | | | | | | | | | | | | This commit adds 'uclass_platdata' field to 'struct udevice', which can be automatically allocated at bind. The allocation size is defined in 'struct uclass_driver' as 'per_device_platdata_auto_alloc_size'. New device's flag is added: DM_FLAG_ALLOC_UCLASS_PDATA, which is used for memory freeing at device unbind method. As for other udevice's fields, a complementary function is added: - dev_get_uclass_platdata() Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* dm: core: add internal functions for getting the device without probePrzemyslaw Marczak2015-04-22-0/+22
| | | | | | | | | | | | | | | | This commit extends the uclass-internal functions by: - uclass_find_first_device() - uclass_find_next_device() For both functions, the returned device is not probed. After some cleanup, the above functions are called by: - uclass_first_device() - uclass_next_device() for which, the returned device is probed. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* dm: test: Allow 'dm test' to select a particular test to runSimon Glass2015-04-18-3/+4
| | | | | | | As well as running all tests, it is useful to be able to run a selected test. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* dm: usb: sandbox: Add an emulator for USB flash devicesSimon Glass2015-04-18-0/+1
| | | | | | | | | | This emulator supports USB enumeration and allows a local file to be provided as the contents of the emulated flash stick. U-Boot can then use the file as it would a normal device, with all access passing through the usb_stor layer and the USB stack. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* dm: usb: sandbox: Add a uclass for USB device emulationSimon Glass2015-04-18-0/+1
| | | | | | | | | | With sandbox we want to be able to emulate USB devices so that we can test the USB stack. Add a uclass to support this. It implements the same operations as a normal USB device driver, but in this case passes them on to an emulation driver. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* dm: usb: Bind generic USB devices when there is no driverSimon Glass2015-04-18-0/+1
| | | | | | | | | | | | | | | | | At present USB devices with no driver model driver cannot be seen in the device list, and we fail to set them up correctly. This means they cannot be used. While having real drivers that support driver model for all USB devices is the eventual goal, we are not there yet. As a stop-gap, add a generic USB driver which is bound when we do not have a real driver. This allows the device to be set up and shown on the bus. It also allows ad-hoc code (such as usb_ether) to find these devices and set them up. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* dm: usb: Add driver model support for hubsSimon Glass2015-04-18-0/+1
| | | | | | | | Adjust the existing hub code to support driver model, and add a USB driver for hubs. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* dm: usb: Add a uclass for USB controllersSimon Glass2015-04-18-0/+1
| | | | | | | | Add a uclass that can represent a USB controller. For now we do not create devices for things attached to the controller. This will be added later. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* dm: core: Add device children and sibling functionsSimon Glass2015-04-18-0/+30
| | | | | | | | Add some utility functions to check for children and for the last sibling in a device's parent. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* dm: core: Rename driver data function to dev_get_driver_data()Simon Glass2015-04-18-5/+11
| | | | | | | | | The existing get_get_of_data() function provides access to both the driver's compatible string and its driver data. However only the latter is actually useful. Update the interface to reflect this and fix up existing users. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* dm: core: Convert driver_bind() to use constSimon Glass2015-04-18-2/+2
| | | | | | | | The driver is not modified by driver model, so update driver_bind() to recognise that. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* dm: core: Support allocating driver-private data for DMASimon Glass2015-04-18-0/+3
| | | | | | | | | Some driver want to put DMA buffers in their private data. Add a flag to tell driver model to align driver-private data to a cache boundary so that DMA will work correctly in this case. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
* dm: x86: Add a uclass for an Low Pin Count (LPC) deviceSimon Glass2015-04-18-0/+1
| | | | | | | | | On x86 systems this device is commonly used to provide legacy port access. It is sort-of a replacement for the old ISA bus. Add a uclass for this, and allow it to have child devices. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: eth: Add basic driver model support to Ethernet stackJoe Hershberger2015-04-18-0/+1
| | | | | | | First just add support for MAC drivers. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* dm: x86: pci: Convert coreboot to use driver model for pciSimon Glass2015-04-18-0/+1
| | | | | | Move coreboot-x86 over to driver model for PCI. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: sandbox: pci: Add a PCI emulation uclassSimon Glass2015-04-16-0/+1
| | | | | | | | Since sandbox does not have real devices (unless it borrows those from the host) it must use emulations. Provide a uclass which permits PCI operations to be passed through to an emulation device. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: pci: Add a uclass for PCISimon Glass2015-04-16-0/+2
| | | | | | | | | | | Add a uclass for PCI controllers and a generic one for PCI devices. Adjust the 'pci' command and the existing PCI support to work with this new uclass. Keep most of the compatibility code in a separate file so that it can be removed one day. TODO: Add more header file comments to the new parts of pci.h Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Add a uclass pre_probe() method for devicesSimon Glass2015-04-16-3/+7
| | | | | | | | | | | | Some uclasses want to set up a device before it is probed. Add a method for this. An example is with PCI, where a PCI uclass wants to set up its private data for later use. This allows the device's uclass() method to make calls whcih use that data (for example, read PCI memory regions from device tree, set up bus numbers). Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Add dev_get_uclass_priv() to access uclass private dataSimon Glass2015-04-16-0/+10
| | | | | | | | Add a convenience function to access the private data that a uclass stores for each of its devices. Convert over most existing uses for consistency and to provide an example for others. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Protect device_unbind() with CONFIG_DM_DEVICE_REMOVEMarek Vasut2015-02-19-0/+4
| | | | | | | | | | | | | Since device_unbind() is also defined in device-remove.c, which is compiled in only in case CONFIG_DM_DEVICE_REMOVE is defined, protect the device_unbind() prototype with the same CONFIG_DM_DEVICE_REMOVE check. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Stefan Roese <sr@denx.de> Cc: Tom Rini <trini@ti.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: introduce dev_get_addr interfacePeng Fan2015-02-12-0/+10
| | | | | | | | | Abstracting dev_get_addr can improve drivers that want to get device's address. Signed-off-by: Peng Fan <Peng.Fan@freescale.com> Acked-by: Igor Grinberg <grinberg@compulab.co.il> Acked-by: Simon Glass <sjg@chromium.org>
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