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* dm: syscon: Allow finding devices by driver dataSimon Glass2016-01-24-12/+19
| | | | | | | | We have a way to find a regmap by its syscon driver data value. Add the same for syscon itself. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* dm: core: Display the error number when driver binding failsSimon Glass2016-01-24-1/+2
| | | | | | | | This is often -96 (-EPFNOSUPPORT) which indicates that the uclass is not compiled in. Display the error number to make this easier to spot. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* dm: core: Export uclass_find_device_by_of_offset()Simon Glass2016-01-21-2/+2
| | | | | | | | It is sometimes useful to be able to find a device before probing it, perhaps to set up some platform data for it. Allow finding by of_offset also. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Don't set pinctrl for pinctrl devicesSimon Glass2016-01-21-2/+4
| | | | | | | | | | | | | | There is sort-of race condition when a pinctrl device is probed. The pinctrl function is called which may end up using the same device as is being probed. This results in operations being used before the device is actually probed. For now, disallow pinctrl operations on pinctrl devices while probing. An alternative solution would be to move the operation to later in the device_probe() function (for pinctrl devices only) but this needs more thought. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Call uclass post_bind() after the driver's bind() methodSimon Glass2016-01-20-5/+7
| | | | | | | | | | | | | | | | | At present the uclass's post_bind() method is called before the driver's bind() method. This means that the uclass cannot use any of the information set up by the driver. Move it later in the sequence to permit this. This is an ordering change which is always fairly major in nature. The main impact is that devices which have children will not see them appear in their bind() method. From what I can see, existing drivers do not look at their children in the bind() method, so this should be safe. Conceptually this change seems to result in a 'more correct' ordering, since the uclass (which is broader than the device) gets the last word. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
* dm: core: Provide uclass_find_device_by_phandle() only when neededSimon Glass2016-01-20-0/+4
| | | | | | | This function cannot be used unless support is enabled for device tree control. Adjust the code to reflect that. Signed-off-by: Simon Glass <sjg@chromium.org>
* Merge branch 'master' of git://www.denx.de/git/u-boot-microblazeTom Rini2016-01-13-1/+10
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| * spl: dm: Add SPL_DM_SEQ_ALIAS config optionNathan Rossi2016-01-13-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Device Model sequence alias feature is required by some Uclasses. Instead of disabling the feature for all SPL targets allow it to be configured. The config option is disabled by default to reduce code size for targets that are not interested or do not require this feature. Signed-off-by: Nathan Rossi <nathan@nathanrossi.com> Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Michal Simek <michal.simek@xilinx.com> Cc: Simon Glass <sjg@chromium.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Marek Vasut <marex@denx.de> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Stefan Roese <sr@denx.de> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* | dm: core: Add a new api to get indexed device addressMugunthan V N2016-01-13-4/+27
| | | | | | | | | | | | | | | | | | Add new api to get device address based on index. Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Acked-by: Jagan Teki <jteki@openedev.com> [Rebased on master] Signed-off-by: Jagan Teki <jteki@openedev.com>
* | dm: core: Add option to configure an offset for the address translationStefan Roese2016-01-12-11/+41
|/ | | | | | | | | | | | Some platforms need to ability to configure an offset to the standard addresses extracted from the device-tree. This patch allows this by adding a function to DM to configure this offset (if needed). Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Simon Glass <sjg@chromium.org> Cc: Simon Glass <sjg@chromium.org> Fixed space before tab: Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Fix Kconfig text to mention SPL in SPL_OF_TRANSLATEStefan Roese2015-12-10-1/+1
| | | | | | | | | | Add a remark about SPL to this Kconfig option. Otherwise its identitcal to the non-SPL version, which is confusing. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Michal Simek <michal.simek@xilinx.com>
* dm: core: Enable SPL_SIMPLE_BUS by defaultMichal Simek2015-12-07-1/+1
| | | | | | | | | | | This option is needed for all SoCs which have nodes on bus. Without enabling this drivers are not found and probed. Issue was found on Zynq MMC probe. Enable this option by default. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
* dm: core: Add SPL Kconfig for REGMAP and SYSCONhuang lin2015-12-01-2/+21
| | | | | | | | Add SPL Kconfig for REGMAP and SYSCON, so REGMAP and SYSCON can remove from SPL stage. Signed-off-by: Lin Huang <hl@rock-chips.com> Acked-by: Simon Glass <sjg@chromium.org>
* Revert "dm: Export device_remove_children / device_unbind_children"Simon Glass2015-11-19-4/+18
| | | | | | This reverts commit bb52b367f6ca4a3a918e77737f4ff6a1089912d9. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: core: Add missing entries for manual relocationMichal Simek2015-11-19-0/+8
| | | | | | | | | | | | | | | | | | | Patches: "dm: core: Add a post_bind method for parents" (sha1: 0118ce79577f9b0881f99a6e4f8a79cd5014cb87) "dm: core: Add a uclass pre_probe() method for devices" (sha1: 02c07b3741f1b825934b1a6eb8f23530532dc426) "dm: core: Allow the uclass to set up a device's child after binding" (sha1: 081f2fcbd9a95ba10677065359791f8fea3f8c58) "dm: core: Allow uclass to set up a device's child before it is probed" (sha1: 83c7e434c9dd3ca81f8b763e23c1881b973bcf2f) Adds new entries to struct driver and struct uclass_driver without extending code for manual relocation. This patch fixes it for all architectures which requires MANUAL_RELOC. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Simon Glass <sjg@chromium.org>
* Merge branch 'master' of git://git.denx.de/u-boot-netTom Rini2015-10-29-7/+0
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| * dm: core: Remove unnecessary codes in uclass_pre_remove_device()Bin Meng2015-10-29-7/+0
| | | | | | | | | | | | | | | | dev->uclass->uc_drv->per_device_auto_alloc_size is to be freed in device_free(), so is dev->seq. Remove these unnecessary codes. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
* | dm: Rename dev_get_parentdata() to dev_get_parent_priv()Simon Glass2015-10-23-1/+1
|/ | | | | | | | The current name is inconsistent with other driver model data access functions. Rename it and fix up all users. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
* dm: core: Enable optional use of fdt_translate_address()Stefan Roese2015-10-21-0/+50
| | | | | | | | | | | | | | The current "simple" address translation simple_bus_translate() is not working on some platforms (e.g. MVEBU). As here more complex "ranges" properties are used in many nodes (multiple tuples etc). This patch enables the optional use of the common fdt_translate_address() function which handles this translation correctly. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Marek Vasut <marex@denx.de> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
* dm: core: Don't use pinctrl for the root deviceSimon Glass2015-10-05-2/+6
| | | | | | | | | | | | | | | | | | | | | Currently when driver model starts up it finds the root uclass and the pinctrl uclass. This is because even the root node handles pinctrl processing. But this is not useful. The root node is not a real hardware device so cannot require any particular pinmux settings. Also it means that the memory leak tests fails, since they end up freeing more memory than they allocate: the marker it set after the root device and pinctrl uclass are allocated, and later once the pinctrl uclass is freed the memory used by driver model is less than when the marker was set. If a platform needs 'core' pin mulitplex settings it can do this with a driver that is probed on start-up. It would be an abuse of the root node to use this for pinctrl. To avoid this problem, only process pinctrl settings for non-root nodes. Signed-off-by: Simon Glass <sjg@chromium.org>
* 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>
generated by cgit v1.1 at 2024-11-09 14:11:33 +0000