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* dm: imx: gpio: Support driver model in MXC gpio driverSimon Glass2014-10-22-1/+303
| | | | | | | | | | Add driver model support with this driver. In this case the platform data is in the driver. It would be better to put this into an SOC-specific file, but this is best attempted when more boards are moved over to use driver model. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
* arm: mx6: cm_fx6: use gpio requestNikita Kiryanov2014-10-22-39/+94
| | | | | | | | | | | | | | | | Use gpio_request for all the gpios that are utilized by various subsystems in cm-fx6, and refactor the relevant init functions so that all gpios are requested during board_init(), not during subsystem init, thus avoiding the need to manage gpio ownership each time a subsystem is initialized. The new division of labor is: During board_init() muxes are setup and gpios are requested. During subsystem init gpios are toggled. Cc: Igor Grinberg <grinberg@compulab.co.il> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
* dm: imx: i2c: Use gpio_request() to request GPIOsSimon Glass2014-10-22-0/+25
| | | | | | | | | | GPIOs should be requested before use. Without this, driver model will not permit the GPIO to be used. Cc: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
* imx: Add error checking to setup_i2c()Simon Glass2014-10-22-13/+55
| | | | | | | Since this function can fail, check its return value. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Nikita Kiryanov <nikita@compulab.co.il>
* dm: serial: Put common code into separate functionsSimon Glass2014-10-22-15/+17
| | | | | | | Avoid duplicating the code which deals with getc() and putc(). It is fairly simple, but may expand later. Signed-off-by: Simon Glass <sjg@chromium.org>
* initcall: Display error number when an error occursSimon Glass2014-10-22-3/+5
| | | | | | | | Now that some initcall functions return a useful error number, display it when something goes wrong. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
* dm: core: Allow a list of devices to be declared in one stepSimon Glass2014-10-22-0/+4
| | | | | | | The U_BOOT_DEVICE macro allows the declaration of a single U-Boot device. Add an equivalent macro to declare an array of devices, for convenience. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: linker_lists: Add a way to declare multiple objectsSimon Glass2014-10-22-0/+21
| | | | | | | | The existing ll_entry_declare() permits a single element of the list to be added to a linker list. Sometimes we want to add several objects at once. To avoid lots of messy declarations, add a macro to support this. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: cros_ec: Move cros_ec_spi to driver modelSimon Glass2014-10-22-9/+79
| | | | | | | | Adjust this driver to use driver model and move smdk5420 boards over to use it. Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: sandbox: cros_ec: Move sandbox cros_ec to driver moduleSimon Glass2014-10-22-5/+86
| | | | | | | | Adjust the sandbox cros_ec emulation driver to work with driver model, and switch over to driver model for sandbox cros_ec. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: cros_ec: Add support for driver modelSimon Glass2014-10-22-15/+174
| | | | | | | | Add support for driver model if enabled. This involves minimal changes to the code, mostly just plumbing around the edges. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: tegra: spi: Convert to driver modelSimon Glass2014-10-22-660/+396
| | | | | | | | | | | | | | This converts the Tegra SPI drivers to use driver model. This is tested on: - Tegra20 - trimslice - Tegra30 - beaver - Tegra124 - dalmore (not tested on Tegra124) Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: tegra: dts: Add aliases for spi on tegra30 boardsSimon Glass2014-10-22-0/+4
| | | | | | | | All boards with a SPI interface have a suitable spi alias except the tegra30 boards. Add these missing aliases. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: sf: Add tests for SPI flashSimon Glass2014-10-22-1/+60
| | | | | | | | | Add a simple test for SPI that uses SPI flash. It operates by creating a SPI flash file and using the 'sf test' command to test that all operations work correctly. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: spi: Add testsSimon Glass2014-10-22-0/+130
| | | | | | | These tests use SPI flash (and the sandbox emulation) to operate. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: exynos: config: Use driver model for SPI flashSimon Glass2014-10-22-0/+1
| | | | | | | Use driver model for exynos5 board SPI flash. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: sf: sandbox: Convert SPI flash driver to driver modelSimon Glass2014-10-22-61/+292
| | | | | | | Convert sandbox's spi flash emulation driver to use driver model. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: Convert spi_flash_probe() and 'sf probe' to use driver modelSimon Glass2014-10-22-2/+89
| | | | | | | | | | | | | | | | | | | We want the SPI flash probing feature to operate as a standard driver. Add a driver for the basic probing feature used by most boards. This will be activated by device_probe() as with any other driver. The 'sf probe' command currently keeps track of the SPI slave that it last used. This doesn't work with driver model, since some other driver or system may have probed the device and have access to it too. On the other hand, if we try to probe a device twice the second probe is a nop with driver model. Fix this by searching for the matching device, removing it, and then probing it again. This should work as expected regardless of other device activity. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: sf: Add a uclass for SPI flashSimon Glass2014-10-22-1/+140
| | | | | | | | | | | Add a driver model uclass for SPI flash which supports the common operations (read, write, erase). Since we must keep support for the non-dm interface, some modification of the spi_flash header is required. CONFIG_DM_SPI_FLASH is used to enable driver model for SPI flash. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* spi: Use error return value in sf_opsSimon Glass2014-10-22-33/+57
| | | | | | | | | | | | | Adjust spi_flash_probe_slave() to return an error value instead of a pointer so we get the correct error return. Have the caller allocate memory for spi_flash to simplify error handling, and also so that driver model can use its existing allocated memory. Add a spi.h include in the sf_params file. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* sf: Tidy up public and private header filesSimon Glass2014-10-22-60/+73
| | | | | | | | Since spi_flash.h is supposed to be the public API for SPI flash, move private things to sf_internal.h. Also tidy up a few comment nits. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* exynos: universal_c210: Move to driver model soft_spiSimon Glass2014-10-22-62/+14
| | | | | | | Adjust this board to use the driver model soft_spi implementation. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: spi: Add documentation on how to convert over SPI driversSimon Glass2014-10-22-0/+594
| | | | | | | | This README is intended to help maintainers move their SPI drivers over to driver model. It works through the required steps with an example. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: exynos: Convert SPI to driver modelSimon Glass2014-10-22-336/+190
| | | | | | | | | | Move the exynos SPI driver over to driver model. This removes quite a bit of boilerplate from the driver, although it adds some for driver model. A few device tree additions are needed to make the SPI flash available. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: spi: Add soft_spi implementationSimon Glass2014-10-22-0/+287
| | | | | | | | Add a new implementation of soft_spi that uses device tree to specify the GPIOs. This will replace soft_spi_legacy for boards which use driver model. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: spi: Remove SPI_INIT featureSimon Glass2014-10-22-8/+0
| | | | | | | | | | | | This feature provides for init of a single SPI port for the soft SPI feature. It is not really compatible with driver model since it assumes a single SPI port. Also, inserting SPI init into the driver by means of a #define is not very nice. This feature is not used by any active boards, so let's remove it. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: spi: Rename soft_spi.c to soft_spi_legacy.cSimon Glass2014-10-22-1/+1
| | | | | | | | Reserve the 'normal' name for use by driver model, and rename the old driver so that it is clear that it is for 'legacy' drivers only. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: sandbox: spi: Move to driver modelSimon Glass2014-10-22-128/+76
| | | | | | | | Adjust the sandbox SPI driver to support driver model and move sandbox over to driver model for SPI. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: spi: Adjust cmd_spi to work with driver modelSimon Glass2014-10-22-8/+31
| | | | | | | | | | | Driver model uses a different way to find the SPI bus and slave from the numbered devices given on the command line. Adjust the code to suit. We use a generic SPI device, and attach it to the SPI bus before performing the transaction. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: Add spi.h header to a few filesSimon Glass2014-10-22-0/+3
| | | | | | | | Some files are using SPI functions but not explitly including the SPI header file. Fix this, since driver model needs it. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: Remove spi_init() from board_r.c when using driver modelSimon Glass2014-10-22-1/+1
| | | | | | | | | | | Driver model does its own init, so we don't need this. There is still a call in board_f.c but it is only enabled by CONFIG_HARD_SPI. It is easy enough to disable that option when converting boards which use it to driver model. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: sandbox: Add a SPI emulation uclassSimon Glass2014-10-22-0/+62
| | | | | | | | | | | | | | | | | U-Boot includes a SPI emulation driver already but it is not explicit, and is hidden in the SPI flash code. Conceptually with sandbox's SPI implementation we have a layer which creates SPI bus transitions and a layer which interprets them, currently only for SPI flash. The latter is actually an emulation, and it should be possible to add more than one emulation - not just SPI flash. Add a SPI emulation uclass so that other emulations can be plugged in to support different types of emulated devices on difference buses/chip selects. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: spi: Add a uclass for SPISimon Glass2014-10-22-4/+650
| | | | | | | | | | | | | | | | Add a uclass which provides access to SPI buses and includes operations required by SPI. For a time driver model will need to co-exist with the legacy SPI interface so some parts of the header file are changed depending on which is in use. The exports are adjusted also since some functions are not available with driver model. Boards must define CONFIG_DM_SPI to use driver model for SPI. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> (Discussed some follow-up comments which will address in future add-ons)
* dm: core: Add a clarifying comment on struct udevice's seq memberSimon Glass2014-10-22-2/+5
| | | | | | | The sequence number is unique within the uclass, so state this clearly. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: core: Allow parents to pass data to children during probeSimon Glass2014-10-22-1/+25
| | | | | | | | | | | Buses sometimes want to pass data to their children when they are probed. For example, a SPI bus may want to tell the slave device about the chip select it is connected to. Add a new function to permit the parent data to be supplied to the child. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* dm: core: Add functions for iterating through device childrenSimon Glass2014-10-22-1/+78
| | | | | | | | Buses need to iterate through their children in some situations. Add a few functions to make this easy. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* sandbox: dts: Add a SPI device and cros_ec deviceSimon Glass2014-10-22-0/+51
| | | | | | | | | | | Add a SPI device which can be used for testing SPI flash features in sandbox. Also add a cros_ec device since with driver model the Chrome OS EC emulation will not otherwise be available. Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: Move serial to driver modelSimon Glass2014-10-22-183/+75
| | | | | | | Change the Exynos serial driver to work with driver model and switch over all relevant boards to use it. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: Mark exynos5 console as pre-relocSimon Glass2014-10-22-0/+1
| | | | | | We will need the console before relocation, so mark it that way. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: gpio: Convert to driver modelSimon Glass2014-10-22-179/+340
| | | | | | | Convert the exynos GPIO driver to driver model. This implements the generic GPIO interface but not the extra Exynos-specific functions. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: Make sure that GPIOs are requestedSimon Glass2014-10-22-9/+62
| | | | | | | | | | With driver model GPIOs must be requested before use. Make sure this is done correctly. (Note that the soft SPI part of universal is omitted, since this driver is about to be replaced with a driver-model-aware version) Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: Tidy up GPIO definesSimon Glass2014-10-22-10/+11
| | | | | | | | | The defines at the top of the GPIO driver use single-character names for parameters which are not very descriptive. Improve these to use descriptive parameter names. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: Tidy up GPIO headersSimon Glass2014-10-22-22/+11
| | | | | | | | | The wrong header is being included, thus requiring the code to re-declare the generic GPIO interface in each GPIO header. Fix this. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: Move s5p_goni to generic boardSimon Glass2014-10-22-0/+2
| | | | | | | The generic board deadline is approaching, and we need this feature to enable driver model. Enable CONFIG_SYS_GENERIC_BOARD for s5p_goni. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: Move smdkc100 to generic boardSimon Glass2014-10-22-0/+2
| | | | | | | The generic board deadline is approaching, and we need this feature to enable driver model. Enable CONFIG_SYS_GENERIC_BOARD for smdkc100. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: Add pinctrl settings for s5p_goniSimon Glass2014-10-22-0/+280
| | | | | | | These describe the GPIOs in enough detail for U-Boot's GPIO driver to operate. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: Add pinctrl settings for smdkc100Simon Glass2014-10-22-0/+187
| | | | | | | These describe the GPIOs in enough detail for U-Boot's GPIO driver to operate. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: dts: Adjust device tree files for U-BootSimon Glass2014-10-22-0/+159
| | | | | | | | | | The pinctrl bindings used by Linux are an incomplete description of the hardware. It is possible in most cases to determine the register address of each, but not in all cases. By adding an additional property we can fix this, and avoid adding a table to U-Boot for every single Exynos SOC. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: dts: Remove unused pinctrl information to save spaceSimon Glass2014-10-22-2098/+0
| | | | | | | | | | We don't include the pinctrl functions for U-Boot as they use up quite a bit of space and are not used. We could instead perhaps eliminate this material with fdtgrep, but so far this tool has not made it to upstream. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: exynos: Bring in pinctrl dts files from Linux kernelSimon Glass2014-10-22-4/+3831
| | | | | | | | | | Bring in required device tree files for pinctrl from Linux v3.14. These are initially unchanged and have a number of pieces not needed by U-Boot. Note that exynos5420 is renamed to exynos54xx here since we want to support exynos5422 also. Signed-off-by: Simon Glass <sjg@chromium.org>
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