Signed-off-by: Andrey Smirnov <[email protected]> --- drivers/pinctrl/Kconfig | 5 ++ drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-vf610.c | 118 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 124 insertions(+) create mode 100644 drivers/pinctrl/pinctrl-vf610.c
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 5c69928..12fff4f 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -77,4 +77,9 @@ config PINCTRL_TEGRA_XUSB source drivers/pinctrl/mvebu/Kconfig +config PINCTRL_VF610 + bool + default y if ARCH_VF610 + help + Pinmux controller found on Vybrid VF610 family of SoCs endif diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index af9b30d..9450dbb 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -9,5 +9,6 @@ obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o obj-$(CONFIG_PINCTRL_TEGRA20) += pinctrl-tegra20.o obj-$(CONFIG_PINCTRL_TEGRA30) += pinctrl-tegra30.o obj-$(CONFIG_PINCTRL_TEGRA_XUSB) += pinctrl-tegra-xusb.o +obj-$(CONFIG_PINCTRL_VF610) += pinctrl-vf610.o obj-$(CONFIG_ARCH_MVEBU) += mvebu/ diff --git a/drivers/pinctrl/pinctrl-vf610.c b/drivers/pinctrl/pinctrl-vf610.c new file mode 100644 index 0000000..e1d59e9 --- /dev/null +++ b/drivers/pinctrl/pinctrl-vf610.c @@ -0,0 +1,118 @@ +/* + * Copyright (c) 2016 Zodiac Inflight Innovation + * Author: Andrey Smirnov <[email protected]> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <common.h> +#include <init.h> +#include <io.h> +#include <of.h> +#include <pinctrl.h> +#include <malloc.h> + +enum { + PINCTRL_VF610_MUX_LINE_SIZE = 20, + PINCTRL_VF610_MUX_SHIFT = 20, +}; + +struct pinctrl_vf610 { + void __iomem *base; + struct pinctrl_device pinctrl; +}; + +static int pinctrl_vf610_set_state(struct pinctrl_device *pdev, + struct device_node *np) +{ + const __be32 *list; + int npins, size, i; + + struct pinctrl_vf610 *iomux = + container_of(pdev, struct pinctrl_vf610, pinctrl); + + dev_dbg(pdev->dev, "%s: %s\n", __func__, np->full_name); + + list = of_get_property(np, "fsl,pins", &size); + if (!list) + return -EINVAL; + + if (!size || size % PINCTRL_VF610_MUX_LINE_SIZE) { + dev_err(pdev->dev, "Invalid fsl,pins property in %s\n", + np->full_name); + return -EINVAL; + } + + npins = size / PINCTRL_VF610_MUX_LINE_SIZE; + + for (i = 0; i < npins; i++) { + u32 mux_reg = be32_to_cpu(*list++); + u32 input_reg = be32_to_cpu(*list++); + u32 mux_val = be32_to_cpu(*list++); + u32 input_val = be32_to_cpu(*list++); + u32 conf_val = be32_to_cpu(*list++); + + writel(mux_val << PINCTRL_VF610_MUX_SHIFT | conf_val, + iomux->base + mux_reg); + + if (input_reg) + writel(input_val, iomux->base + input_reg); + } + + return 0; +} + +static struct pinctrl_ops pinctrl_vf610_ops = { + .set_state = pinctrl_vf610_set_state, +}; + +static int pinctrl_vf610_probe(struct device_d *dev) +{ + int ret; + struct resource *io; + struct pinctrl_vf610 *iomux; + + iomux = xzalloc(sizeof(*iomux)); + + io = dev_request_mem_resource(dev, 0); + if (IS_ERR(io)) + return PTR_ERR(io); + + iomux->base = IOMEM(io->start); + iomux->pinctrl.dev = dev; + iomux->pinctrl.ops = &pinctrl_vf610_ops; + + ret = pinctrl_register(&iomux->pinctrl); + if (ret) + free(iomux); + + return ret; +} + +static __maybe_unused struct of_device_id pinctrl_vf610_dt_ids[] = { + { .compatible = "fsl,vf610-iomuxc", }, + { /* sentinel */ } +}; + +static struct driver_d pinctrl_vf610_driver = { + .name = "vf610-pinctrl", + .probe = pinctrl_vf610_probe, + .of_compatible = DRV_OF_COMPAT(pinctrl_vf610_dt_ids), +}; + +static int pinctrl_vf610_init(void) +{ + return platform_driver_register(&pinctrl_vf610_driver); +} +postcore_initcall(pinctrl_vf610_init); -- 2.5.5 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
