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* fdt: add new fdt address parsing functionsStephen Warren2015-09-15-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fdtdec_get_addr_size() hard-codes the number of cells used to represent an address or size in DT. This is incorrect in many cases depending on the DT binding for a particular node or property (e.g. it is incorrect for the "reg" property). In most cases, DT parsing code must use the properties #address-cells and #size-cells to parse addres properties. This change splits up the implementation of fdtdec_get_addr_size() so that the core logic can be used for both hard-coded and non-hard-coded cases. Various wrapper functions are implemented that support cases where hard-coded cell counts should or should not be used, and where the client does and doesn't know the parent node ID that contains the properties #address-cells and #size-cells. dev_get_addr() is updated to use the new functions. Core functionality in fdtdec_get_addr_size_fixed() is widely tested via fdtdec_get_addr_size(). I tested fdtdec_get_addr_size_auto_noparent() and dev_get_addr() by manually modifying the Tegra I2C driver to invoke them. Much of the core implementation of fdtdec_get_addr_size_fixed(), fdtdec_get_addr_size_auto_parent(), and fdtdec_get_addr_size_auto_noparent() comes from Thierry Reding's previous commit "fdt: Fix fdtdec_get_addr_size() for 64-bit". Based-on-work-by: Thierry Reding <treding@nvidia.com> Cc: Thierry Reding <treding@nvidia.com> Cc: Simon Glass <sjg@chromium.org> Cc: Michal Suchanek <hramrach@gmail.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org> Dropped #define DEBUG at the top of fdtdec.c: Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Provide better debugging when a device fails to bindSimon Glass2015-09-02-1/+4
| | | | | | | | | | All devices should bind without error. But when they don't, they can cause driver model init to fail. A real situation where this can happen is when there is a missing uclass. Add a debug() call to dm_scan_fdt_node to make this easier to track. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Improve handling of a missing uclassSimon Glass2015-09-02-2/+9
| | | | | | | | | | | | | | | When a uclass definition is missing, no drivers in that uclass can operate. This can happen if a board has a strange collection of options (e.g. the driver is enabled but the uclass is not). Unfortunately this is very confusing at present. Starting up driver model results in a -ENOENT error, which is pretty generic. Quite a big of digging is needed to get to the root cause. To help with this, change the error to a very strange one with no other users in U-Boot. Also add a debug message. Signed-off-by: Simon Glass <sjg@chromium.org>
* pinctrl: add pin control uclass supportMasahiro Yamada2015-08-31-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This creates a new framework for handling of pin control devices, i.e. devices that control different aspects of package pins. This uclass handles pinmuxing and pin configuration; pinmuxing controls switching among silicon blocks that share certain physical pins, pin configuration handles electronic properties such as pin- biasing, load capacitance etc. This framework can support the same device tree bindings, but if you do not need full interface support, you can disable some features to reduce memory foot print. Typically around 1.5KB is necessary to include full-featured uclass support on ARM board (CONFIG_PINCTRL + CONFIG_PINCTRL_FULL + CONFIG_PINCTRL_GENERIC + CONFIG_PINCTRL_PINMUX), for example. We are often limited on code size for SPL. Besides, we still have many boards that do not support device tree configuration. The full pinctrl, which requires OF_CONTROL, does not make sense for those boards. So, this framework also has a Do-It-Yourself (let's say simple pinctrl) interface. With CONFIG_PINCTRL_FULL disabled, the uclass itself provides no systematic mechanism for identifying the peripheral device, applying pinctrl settings, etc. They must be done in each low-level driver. In return, you can save much memory footprint and it might be useful especially for SPL. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: core: allow device_bind() to not return a device pointerMasahiro Yamada2015-08-31-2/+4
| | | | | | | | This is useful when we want to bind a device, but do not need the pointer to the device. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: core: Add Kconfig for simple bus driverMarek Vasut2015-08-31-6/+17
| | | | | | | | | | | | Add Kconfig entries for the simple-bus driver, both for U-Boot and for SPL. The simple-bus is enabled by default in U-Boot and disabled by default in SPL to preserve the original behavior. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org> Modified to fit on top of Masahiro's $(SPL) setup: Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Use dev_get_addr() where possibleSimon Glass2015-08-31-0/+2
| | | | | | | | | | This is a convenient way for a driver to get the hardware address of a device, when regmap or syscon are not being used. Change existing callers to use it as an example to others. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
* dm: core: Fix code reentrancy issue in device_probe_child()Bin Meng2015-08-26-5/+14
| | | | | | | | | | | | | | The device might have already been probed during the call to device_probe() on its parent device (e.g. PCI bridge devices). In its parent device's probe routine, it might probe all of its child devices via device_probe() thus the codes reenter device_probe_child(). To support code reentrancy, test these allocated memory against NULL to avoid memory leak, and return to the caller if dev->flags has DM_FLAG_ACTIVATED set after device_probe() returns, so that we don't mess up the device. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
* of: clean up OF_CONTROL ifdef conditionalsMasahiro Yamada2015-08-18-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We have flipped CONFIG_SPL_DISABLE_OF_CONTROL. We have cleansing devices, $(SPL_) and CONFIG_IS_ENABLED(), so we are ready to clear away the ugly logic in include/fdtdec.h: #ifdef CONFIG_OF_CONTROL # if defined(CONFIG_SPL_BUILD) && !defined(SPL_OF_CONTROL) # define OF_CONTROL 0 # else # define OF_CONTROL 1 # endif #else # define OF_CONTROL 0 #endif Now CONFIG_IS_ENABLED(OF_CONTROL) is the substitute. It refers to CONFIG_OF_CONTROL for U-boot proper and CONFIG_SPL_OF_CONTROL for SPL. Also, we no longer have to cancel CONFIG_OF_CONTROL in include/config_uncmd_spl.h and scripts/Makefile.spl. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
* dm: drop CONFIG_DM_DEVICE_REMOVE from uncmd listMasahiro Yamada2015-08-18-6/+6
| | | | | | | | | | | | | | | We do not want to compile the DM remove code for SPL. Currently, we undef it in include/config_uncmd_spl.h (for C files) and in scripts/Makefile.uncmd_spl (for Makefiles). This is really ugly. This commit demonstrates how we can deprecate those two files. Use $(SPL_) for the entry in the Makfile and CONFIG_IS_ENABLED() in C files. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* drivers: hierarchize drivers Kconfig menuMasahiro Yamada2015-08-12-0/+4
| | | | | | | | | | | The menuconfig for drivers are getting more and more cluttered and unreadable because too many entries are displayed in a single flat menu. Use hierarchic menu for each category. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org> [trini: Update to apply again in a few places, drop USB hunk] Signed-off-by: Tom Rini <trini@konsulko.com>
* dm: core: Add a way to set a device nameSimon Glass2015-08-06-0/+10
| | | | | | | | | | Some devices are bound entirely by probing and do not have the benefit of a device tree to give them a name. This is very common with PCI and USB. In most cases this is fine, but we should add an official way to set a device name. This should be called in the device's bind() method. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* devres: add debug command to dump device resourcesMasahiro Yamada2015-08-06-1/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This new command can dump all device resources associated to each device. The fields in every line shows: - The address of the resource - The size of the resource - The name of the release function - The stage in which the resource has been acquired (BIND/PROBE) Currently, there is no driver using devres, but if such drivers are implemented, the output of this command should look like this: => dm devres - root_driver - soc - extbus - serial@54006800 bfb541e8 (8 byte) devm_kmalloc_release BIND bfb54440 (4 byte) devm_kmalloc_release PROBE bfb54460 (4 byte) devm_kmalloc_release PROBE - serial@54006900 bfb54270 (8 byte) devm_kmalloc_release BIND - gpio@55000000 - i2c@58780000 bfb5bce8 (12 byte) devm_kmalloc_release PROBE bfb5bd10 (4 byte) devm_kmalloc_release PROBE - eeprom bfb54418 (12 byte) devm_kmalloc_release BIND Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
* devres: make Devres optional with CONFIG_DEVRESMasahiro Yamada2015-08-06-2/+18
| | | | | | | | | | | | | | | | | Currently, Devres requires additional 16 byte for each allocation, which is not so insignificant in some cases. Add CONFIG_DEVRES to make this framework optional. If the option is disabled, devres functions fall back to non-managed variants. For example, devres_alloc() to kzalloc(), devm_kmalloc() to kmalloc(), etc. Because devres_head is also surrounded by an ifdef conditional, there is no memory overhead when CONFIG_DEVRES is disabled. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Suggested-by: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* devres: add devm_kmalloc() and friends (managed memory allocators)Masahiro Yamada2015-08-06-0/+34
| | | | | | | | | | | devm_kmalloc() is identical to kmalloc() except that the memory allocated with it is managed and will be automatically released when the device is removed/unbound. Likewise for the other variants. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
* devres: introduce Devres (Managed Device Resource) frameworkMasahiro Yamada2015-08-06-1/+215
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In U-Boot's driver model, memory is basically allocated and freed in the core framework. So, low level drivers generally only have to specify the size of needed memory with .priv_auto_alloc_size, .platdata_auto_alloc_size, etc. Nevertheless, some drivers still need to allocate/free memory on their own in case they cannot statically know the necessary memory size. So, I believe it is reasonable enough to port Devres into U-boot. Devres, which originates in Linux, manages device resources for each device and automatically releases them on driver detach. With devres, device resources are guaranteed to be freed whether initialization fails half-way or the device gets detached. The basic idea is totally the same to that of Linux, but I tweaked it a bit so that it fits in U-Boot's driver model. In U-Boot, drivers are activated in two steps: binding and probing. Binding puts a driver and a device together. It is just data manipulation on the system memory, so nothing has happened on the hardware device at this moment. When the device is really used, it is probed. Probing initializes the real hardware device to make it really ready for use. So, the resources acquired during the probing process must be freed when the device is removed. Likewise, what has been allocated in binding should be released when the device is unbound. The struct devres has a member "probe" to remember when the resource was allocated. CONFIG_DEBUG_DEVRES is also supported for easier debugging. If enabled, debug messages are printed each time a resource is allocated/freed. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: add DM_FLAG_BOUND flagMasahiro Yamada2015-08-06-0/+5
| | | | | | | | | | | | Currently, we only have DM_FLAG_ACTIVATED to indicate the device status, but we still cannot know in which stage is in progress, binding or probing. This commit introduces a new flag, DM_FLAG_BOUND, which is set when the device is really bound, and cleared when it is unbound. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: Support address translation for simple-busSimon Glass2015-08-06-6/+41
| | | | | | | | The 'ranges' property can be used to specify a translation from the system address to the bus address. Add support for this using the dev_get_addr() function, which devices should use to find their address. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Make regmap and syscon optionalSimon Glass2015-08-06-2/+21
| | | | | | | | Not all boards use garbage collection in their link step, so we should avoid adding options that rely on this for prevention of code bloat. Add separate Kconfig options for syscon and regmap uclasses. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Support finding a device by phandleSimon Glass2015-08-05-0/+42
| | | | | | | | | It is common for one node to reference another via a phandle. Add support for obtaining an attached device by this method. As an example, a node may have a 'power-supply' property which references a regulator, allowing the driver to turn on its power. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Check for empty list in uclass_find_device()Simon Glass2015-08-05-0/+2
| | | | | | | | This function needs to check the list has entries before traversing it. Fix this bug. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* dm: core: Add \n to two dm_warn() messagesSimon Glass2015-07-21-2/+2
| | | | | | These should finish with a newline like the others. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: usb: Document that mixing DM_DEVICE_REMOVE and DM_USB is a bad ideaHans de Goede2015-07-21-0/+4
| | | | | | | | Document that mixing DM_DEVICE_REMOVE and DM_USB is a bad idea, and also why this is a bad idea. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: Export device_remove_children / device_unbind_childrenHans de Goede2015-07-21-18/+4
| | | | | | | | 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: remove redundant CONFIG_DM from driver/core/MakefileMasahiro Yamada2015-07-21-1/+1
| | | | | | | | As you see in driver/Makefile, Kbuild descends into the driver/core/ directory only when CONFIG_DM is enabled. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: do not set DM_FLAG_ACTIVATED twiceMasahiro Yamada2015-07-21-1/+0
| | | | | | | | | | | | | | | Currently, DM_FLAG_ACTIVATED is set twice; before calling uclass_pre_probe_device() and again before calling drv->probe(). It looks like Simon's intention is the first one. The DM_FLAG_ACTIVATED was moved twice, by commit 02eeb1bbb174 (dm: core: Mark device as active before calling its probe() method), and then by commit 206d4d2b4b30 (dm: core: Mark device as active before calling uclass probe() methods). The first marking was added by the last move. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: change dm_warn() message into debug() in uclass_add()Masahiro Yamada2015-07-21-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The command "dm uclass" tries to display all the UClasses, but some of them might be disabled by Kconfig. The function do_dm_dump_uclass() iterates over all the UClass IDs and calls uclass_get() for each of them. Then, it displays annoying message "Cannot find uclass for id ..." every time it fails to get the UClass. As a result, we get much noisier log for the "dm uclass" command. => dm uclass uclass 0: root - * root_driver @ bfb54028, seq 0, (req -1) Cannot find uclass for id 1: please add the UCLASS_DRIVER() ... Cannot find uclass for id 2: please add the UCLASS_DRIVER() ... Cannot find uclass for id 3: please add the UCLASS_DRIVER() ... Cannot find uclass for id 4: please add the UCLASS_DRIVER() ... Cannot find uclass for id 5: please add the UCLASS_DRIVER() ... Cannot find uclass for id 6: please add the UCLASS_DRIVER() ... This commit suppresses these warnings. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: core: Add device checking to syscon_get_regmap()Simon Glass2015-07-21-2/+5
| | | | | | | | | | This function can only handle a syscon device. It is possible that someone will make a mistake, so add a check for this. Also we should return -ENODEV when a device cannot be found, so update the syscon_get_regmap_by_driver_data() to follow this convention. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Add support for generic system controllers (syscon)Simon Glass2015-07-21-0/+74
| | | | | | | | | | | 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: Add support for register maps (regmap)Simon Glass2015-07-21-0/+87
| | | | | | | | | | | Add a simple implementaton of register maps, supporting only direct I/O for now. This can be enhanced later to support buses which have registers, such as I2C, SPI and PCI. It allows drivers which can operate with multiple buses to avoid dealing with the particulars of register access on that bus. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Correct device_get_child_by_of_offset() parameterSimon Glass2015-07-21-2/+2
| | | | | | 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/+25
| | | | | | | | | | | | 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: core: Use debug() instead of printf() for failuresSimon Glass2015-07-21-3/+3
| | | | | | | | To avoid bloating SPL code, use debug() where possible in the driver model core code. The error code is already returned, and can be investigated as needed. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Move the tree/uclass dump code into its own fileSimon Glass2015-07-21-0/+97
| | | | | | | | | | 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>
* Remove SPL undefine of CONFIG_OF_CONTROLSimon Glass2015-06-10-0/+2
| | | | | | | Allow SPL to be built with this option so that we can support device tree control. Disable the simple bus for now in SPL. It may be needed later. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Add a function to bind a driver for a device tree nodeSimon Glass2015-04-29-1/+8
| | | | | | | | 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: Correct bug introduced in uclass_first/next_device()Simon Glass2015-04-28-0/+5
| | | | | | | | | | | | | | These functions now rely on uclass_find_first/next_device() and assume that they will either return failure (-ve error code) or a device. In fact, coming to the end of a list is not considered failure and they return 0 in that case. The logic to deal with this was replaced in commit acb9ca2a with just using uclass_get_device_tail(). Add back the missing logic. This bug was caught by unit tests but since they were broken for other reasons at the time, this was not noticed. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: drop device removal error path correctlyMasahiro Yamada2015-04-28-3/+3
| | | | | | | | Trivial bug fix for commit 5a87c4174d18 (dm: core: Drop device removal error path when not supported). Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: core: Select device tree control correctly for SPLSimon Glass2015-04-23-6/+8
| | | | | | | Some boards will not use device tree for SPL even with driver model. Add the logic to support this. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Drop device removal error path when not supportedSimon Glass2015-04-23-10/+16
| | | | | | | | When CONFIG_DM_DEVICE_REMOVE is not enabled, such as in SPL, we cannot remove or unbind devices and do not expect to get errors when binding and probing devices. So drop the error path to reduce code size. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Remove unbind operations when not requiredSimon Glass2015-04-23-0/+4
| | | | | | | | 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: Allow sequence alias support to be removed for SPLSimon Glass2015-04-23-13/+24
| | | | | | | | In many cases SPL only uses a single serial port and there is no need for alias sequence support. We will just use the serial port pointed to by stdout-path in the /chosen node. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Handle recursive unbinding of uclass devicesSimon Glass2015-04-22-2/+10
| | | | | | | | | | | | Since a device can have children in the same uclass as itself, we need to handle unbinding carefully: we must allow that unbinding a device in a uclass may cause another device in the same uclass to be unbound. Adjust the code to cope. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com> Tested-by: Joe Hershberger <joe.hershberger@ni.com>
* dm: core: remove type 'static' of function uclass_get_device_tail()Przemyslaw Marczak2015-04-22-11/+1
| | | | | | | | | | | 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/+8
| | | | | | | | | | | | | 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/+8
| | | | | | | | | | | | | | 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/+11
| | | | | | | | | | | | | | | | | | | | | | 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 Marczak2015-04-22-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | 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: core: Extend struct udevice by '.uclass_platdata' field.Przemyslaw Marczak2015-04-22-4/+33
| | | | | | | | | | | | | | | | 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 Marczak2015-04-22-25/+34
| | | | | | | | | | | | | | | | 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>
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