[U-Boot] [RFC PATCH v2 0/13] Enable driver model for GPIOs on Tegra

[Simon Glass]

Now that driver model is part of U-Boot, the task of converting drivers over
to it begins. GPIO is one of the easiest to convert, since it already has a
sandbox driver and a uclass driver.

The Tegra GPIO driver is relatively simple since it has a linear numbering
and already uses the generic GPIO framework.

Along the way some minor deficiencies were found with driver model - these
are corrected in this series.

Also it was difficult to exhaustively test the new driver against the old,
so a new 'iotrace' framework was created to make this easier for future
driver authors.

This series has been tested on Trimslice (Tegra 20). I will try it on a
beaver also.

Changes in v3:
- Remove use of bool in header file to avoid exynos5 build failure
- Create a symlink for each arch to dt-bindings
- Bring in GPIO bindings for tegra{30,114,124} also
- Fix typo in commit subject
- Enable dm command in this patch instead of the next
- Move dm command enable to previous patch
- Use gpio number for the internal helper functions

Changes in v2:
- Add a new patch for an I/O tracing feature
- Add a new patch to enable iotrace for arm
- Add a new patch to enable iotrace for sandbox
- Add new patch to support include files for .dts files
- Add new patch to bring in Tegra device tree files from linux
- Update README to encourage conversion to driver model
- Add new patch to use case-insensitive comparison for GPIO banks
- Add new patch to add missing header files in lists and root
- Add new patch to deal with const-ness of the global_data pointer
- Add new patch to allow driver model tests only for sandbox
- Add new patch to fix printf() strings in the 'dm' command
- Split out a separate patch to enable driver model for tegra
- Split out driver model changes into separate patches
- Correct bugs found during testing

Simon Glass (13):
  Add an I/O tracing feature
  arm: Support iotrace feature
  sandbox: Support iotrace feature
  Makefile: Support include files for .dts files
  tegra: dts: Bring in GPIO bindings from linux
  dm: Update README to encourage conversion to driver model
  dm: Use case-insensitive comparison for GPIO banks
  dm: Add missing header files in lists and root
  dm: Cast away the const-ness of the global_data pointer
  dm: Allow driver model tests only for sandbox
  dm: Fix printf() strings in the 'dm' command
  tegra: Enable driver model
  tegra: Convert tegra GPIO driver to use driver model

 README                                             |  28 ++
 arch/arm/dts/include/dt-bindings                   |   1 +
 arch/arm/dts/tegra114.dtsi                         |  21 +-
 arch/arm/dts/tegra124.dtsi                         |  23 +-
 arch/arm/dts/tegra20.dtsi                          |  15 +-
 arch/arm/dts/tegra30.dtsi                          |  21 +-
 arch/arm/include/asm/arch-tegra/gpio.h             |  14 +-
 arch/arm/include/asm/io.h                          |   3 +
 arch/microblaze/dts/include/dt-bindings            |   1 +
 arch/sandbox/dts/include/dt-bindings               |   1 +
 arch/sandbox/include/asm/io.h                      |  10 +
 arch/x86/dts/include/dt-bindings                   |   1 +
 board/nvidia/seaboard/seaboard.c                   |   2 +-
 common/Makefile                                    |   2 +
 common/cmd_iotrace.c                               |  73 +++++
 common/iotrace.c                                   | 169 +++++++++++
 drivers/core/lists.c                               |   1 +
 drivers/core/root.c                                |   7 +-
 drivers/core/uclass.c                              |   2 +-
 drivers/gpio/gpio-uclass.c                         |   2 +-
 drivers/gpio/tegra_gpio.c                          | 313 +++++++++++++++++----
 include/configs/sandbox.h                          |   3 +
 include/configs/tegra-common.h                     |   4 +
 include/dm/device-internal.h                       |   4 +
 include/dt-bindings/gpio/gpio.h                    |  15 +
 include/dt-bindings/gpio/tegra-gpio.h              |  51 ++++
 include/dt-bindings/interrupt-controller/arm-gic.h |  22 ++
 include/dt-bindings/interrupt-controller/irq.h     |  19 ++
 include/iotrace.h                                  | 104 +++++++
 scripts/Makefile.lib                               |   1 +
 test/dm/Makefile                                   |   2 +
 test/dm/cmd_dm.c                                   |  19 +-
 32 files changed, 849 insertions(+), 105 deletions(-)
 create mode 120000 arch/arm/dts/include/dt-bindings
 create mode 120000 arch/microblaze/dts/include/dt-bindings
 create mode 120000 arch/sandbox/dts/include/dt-bindings
 create mode 120000 arch/x86/dts/include/dt-bindings
 create mode 100644 common/cmd_iotrace.c
 create mode 100644 common/iotrace.c
 create mode 100644 include/dt-bindings/gpio/gpio.h
 create mode 100644 include/dt-bindings/gpio/tegra-gpio.h
 create mode 100644 include/dt-bindings/interrupt-controller/arm-gic.h
 create mode 100644 include/dt-bindings/interrupt-controller/irq.h
 create mode 100644 include/iotrace.h

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1.9.1.423.g4596e3a