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. Each GPIO bank has a separate device. Some arguments have been made that a single device should support all the GPIO banks, but currently the driver model uclass does not work that way and it would require a second-level data structure to handle the bank feature.
This driver has been tested on:
- Seaboard (Tegra 20) - Beaver (Tegra 30) - Jetson-TK1 (Tegra 124).
I don't have a Tegra 114 board (Dalmore seems to be the only one with U-Boot support) but I am quite confident that it works.
For exynos, the pinctrl device tree files are brought in from the kernel and cut down to remove the groupings which we don't yet use. Very small additions are made to avoid replicating the awful tables that Linux has for every exynos SoC. This series sits on top of the exynos refactors.
The 'gpio' command is updated to support display of only the allocated GPIOs. This is much more friendly than displaying a large table.
A few related clean-ups are provided as well.
This series is available at u-boot-dm.git, branch working.
Changes in v7: - Add new patch to init driver model before board_early_init_f() - Add new patch to enable pre-reloc malloc() for tegra - Set up pin config in tegra_spl_gpio_direction_output() - Bring in patches from the SPI series to move post-reloc DM init earlier
Changes in v6: - Use base_gpio instead of base_port for simplicity - Add an implementation of the get_function() method - Fix typo in compatible string - Remove exynos5420.dtsi which is not used in U-Boot - Move U-Boot changes into their own file - Use exynos54xx everywhere instead of exynos5420
Changes in v5: - Put this patch before the others to avoid breaking bisectability - Add additional gpio_request() calls for other samsung boards - Use a mask instead of division in gpio_request() naming call - Remove RFC label now that build errors are fixed - Tidy up and update cover letter message - Avoid reordering functions
Changes in v4: - Rename struct device to struct udevice - Add patches for exynos GPIO support
Changes in v3: - Move dm command enable to previous patch - Use gpio number for the internal helper functions
Changes in v2: - Remove RFC status - Add exynos serial support - Split out core driver model patches into a separate set - Split out driver model changes into separate patches - Correct bugs found during testing
Simon Glass (13): dm: Move pre-reloc init earlier to cope with board_early_init_f() Set up stdio earlier when using driver model dm: Make driver model available before board_init() dm: tegra: Set up a pre-reloc malloc() tegra: Convert tegra GPIO driver to use driver model exynos: dts: Convert /include/ to #include exynos: Bring in pinctrl dts files from Linux kernel exynos: dts: Remove unused pinctrl information to save space exynos: dts: Adjust device tree files for U-Boot exynos: Tidy up GPIO headers exynos: Tidy up GPIO defines exynos: Make sure that GPIOs are requested exynos: gpio: Convert to driver model
arch/arm/cpu/armv7/exynos/pinmux.c | 5 +- arch/arm/dts/exynos4.dtsi | 9 +- arch/arm/dts/exynos4210-origen.dts | 4 +- arch/arm/dts/exynos4210-pinctrl-uboot.dtsi | 27 ++ arch/arm/dts/exynos4210-pinctrl.dtsi | 306 ++++++++++++++++++++ arch/arm/dts/exynos4210-smdkv310.dts | 2 +- arch/arm/dts/exynos4210-trats.dts | 2 +- arch/arm/dts/exynos4210-universal_c210.dts | 2 +- arch/arm/dts/exynos4210.dtsi | 155 ++++++++++ arch/arm/dts/exynos4412-trats2.dts | 2 +- arch/arm/dts/exynos4412.dtsi | 38 +++ arch/arm/dts/exynos4x12-pinctrl-uboot.dtsi | 46 +++ arch/arm/dts/exynos4x12-pinctrl.dtsi | 346 ++++++++++++++++++++++ arch/arm/dts/exynos4x12.dtsi | 114 ++++++++ arch/arm/dts/exynos5.dtsi | 56 +++- arch/arm/dts/exynos5250-pinctrl-uboot.dtsi | 40 +++ arch/arm/dts/exynos5250-pinctrl.dtsi | 333 ++++++++++++++++++++++ arch/arm/dts/exynos5250-smdk5250.dts | 2 +- arch/arm/dts/exynos5250-snow.dts | 2 +- arch/arm/dts/exynos5250.dtsi | 40 ++- arch/arm/dts/exynos5420-peach-pit.dts | 2 +- arch/arm/dts/exynos5420-smdk5420.dts | 2 +- arch/arm/dts/exynos54xx-pinctrl-uboot.dtsi | 52 ++++ arch/arm/dts/exynos54xx-pinctrl.dtsi | 305 ++++++++++++++++++++ arch/arm/dts/exynos54xx.dtsi | 57 +++- arch/arm/dts/s5pc1xx-goni.dts | 2 +- arch/arm/dts/s5pc1xx-smdkc100.dts | 2 +- arch/arm/include/asm/arch-exynos/gpio.h | 5 - arch/arm/include/asm/arch-s5pc1xx/gpio.h | 4 - arch/arm/include/asm/arch-tegra/gpio.h | 15 +- board/nvidia/seaboard/seaboard.c | 2 +- board/samsung/arndale/arndale.c | 4 +- board/samsung/common/board.c | 2 +- board/samsung/common/misc.c | 3 +- board/samsung/goni/goni.c | 4 +- board/samsung/origen/origen.c | 2 +- board/samsung/smdk5250/exynos5-dt.c | 7 + board/samsung/smdk5420/smdk5420.c | 6 +- board/samsung/smdkc100/smdkc100.c | 2 +- board/samsung/smdkv310/smdkv310.c | 2 +- board/samsung/trats/trats.c | 17 +- board/samsung/trats2/trats2.c | 27 +- board/samsung/universal_c210/universal.c | 4 +- common/board_f.c | 4 +- common/board_r.c | 19 +- common/stdio.c | 18 +- drivers/gpio/s5p_gpio.c | 444 +++++++++++++++++++---------- drivers/gpio/tegra_gpio.c | 327 +++++++++++++++++---- drivers/mmc/s5p_sdhci.c | 7 +- include/configs/exynos-common.h | 4 + include/configs/tegra-common.h | 2 + include/stdio_dev.h | 24 +- 52 files changed, 2641 insertions(+), 267 deletions(-) create mode 100644 arch/arm/dts/exynos4210-pinctrl-uboot.dtsi create mode 100644 arch/arm/dts/exynos4210-pinctrl.dtsi create mode 100644 arch/arm/dts/exynos4210.dtsi create mode 100644 arch/arm/dts/exynos4412.dtsi create mode 100644 arch/arm/dts/exynos4x12-pinctrl-uboot.dtsi create mode 100644 arch/arm/dts/exynos4x12-pinctrl.dtsi create mode 100644 arch/arm/dts/exynos4x12.dtsi create mode 100644 arch/arm/dts/exynos5250-pinctrl-uboot.dtsi create mode 100644 arch/arm/dts/exynos5250-pinctrl.dtsi create mode 100644 arch/arm/dts/exynos54xx-pinctrl-uboot.dtsi create mode 100644 arch/arm/dts/exynos54xx-pinctrl.dtsi