[PATCH 3/9] arm: mach-mvebu: add source files
Andrew Lunn
andrew at lunn.ch
Tue Jul 3 11:16:48 EDT 2012
On Mon, Jul 02, 2012 at 05:39:28PM +0200, Thomas Petazzoni wrote:
> From: Gregory CLEMENT <gregory.clement at free-electrons.com>
>
> [ben.dooks at codethink.co.uk: fixup style error in system-controller]
> [ben.dooks at codethink.co.uk: check result of of_match_node()]
>
> Signed-off-by: Gregory CLEMENT <gregory.clement at free-electrons.com>
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
> Signed-off-by: Lior Amsalem <alior at marvell.com>
> ---
> arch/arm/mach-mvebu/Kconfig | 7 +++
> arch/arm/mach-mvebu/Makefile | 1 +
> arch/arm/mach-mvebu/Makefile.boot | 1 +
> arch/arm/mach-mvebu/common.h | 20 ++++++
> arch/arm/mach-mvebu/system-controller.c | 105 +++++++++++++++++++++++++++++++
> 5 files changed, 134 insertions(+)
> create mode 100644 arch/arm/mach-mvebu/Kconfig
> create mode 100644 arch/arm/mach-mvebu/Makefile
> create mode 100644 arch/arm/mach-mvebu/Makefile.boot
> create mode 100644 arch/arm/mach-mvebu/common.h
> create mode 100644 arch/arm/mach-mvebu/system-controller.c
>
> diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
> new file mode 100644
> index 0000000..72d39e5
> --- /dev/null
> +++ b/arch/arm/mach-mvebu/Kconfig
> @@ -0,0 +1,7 @@
> +if ARCH_MVEBU
> +
> +menu "Marvell SOC with device tree"
> +
> +endmenu
> +
> +endif
> diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
> new file mode 100644
> index 0000000..7366ae7
> --- /dev/null
> +++ b/arch/arm/mach-mvebu/Makefile
> @@ -0,0 +1 @@
> +obj-y += system-controller.o
> diff --git a/arch/arm/mach-mvebu/Makefile.boot b/arch/arm/mach-mvebu/Makefile.boot
> new file mode 100644
> index 0000000..b327175
> --- /dev/null
> +++ b/arch/arm/mach-mvebu/Makefile.boot
> @@ -0,0 +1 @@
> +zreladdr-y := 0x00008000
> diff --git a/arch/arm/mach-mvebu/common.h b/arch/arm/mach-mvebu/common.h
> new file mode 100644
> index 0000000..f0eaa21
> --- /dev/null
> +++ b/arch/arm/mach-mvebu/common.h
> @@ -0,0 +1,20 @@
> +/*
> + * Core functions for Marvell System On Chip
> + *
> + * Copyright (C) 2012 Marvell
> + *
> + * Lior Amsalem <alior at marvell.com>
> + * Gregory CLEMENT <gregory.clement at free-electrons.com>
> + * Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
> + *
> + * This file is licensed under the terms of the GNU General Public
> + * License version 2. This program is licensed "as is" without any
> + * warranty of any kind, whether express or implied.
> + */
> +
> +#ifndef __ARCH_MVEBU_COMMON_H
> +#define __ARCH_MVEBU_COMMON_H
> +
> +void mvebu_restart(char mode, const char *cmd);
> +
> +#endif
> diff --git a/arch/arm/mach-mvebu/system-controller.c b/arch/arm/mach-mvebu/system-controller.c
> new file mode 100644
> index 0000000..b8079df
> --- /dev/null
> +++ b/arch/arm/mach-mvebu/system-controller.c
> @@ -0,0 +1,105 @@
> +/*
> + * System controller support for Armada 370 and XP platforms.
> + *
> + * Copyright (C) 2012 Marvell
> + *
> + * Lior Amsalem <alior at marvell.com>
> + * Gregory CLEMENT <gregory.clement at free-electrons.com>
> + * Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
> + *
> + * This file is licensed under the terms of the GNU General Public
> + * License version 2. This program is licensed "as is" without any
> + * warranty of any kind, whether express or implied.
> + *
> + * The Armada 370 and Armada XP SoCs both have a range of
> + * miscellaneous registers, that do not belong to a particular device,
> + * but rather provide system-level features. This basic
> + * system-controller driver provides a device tree binding for those
> + * registers, and implements utility functions offering various
> + * features related to those registers.
> + *
> + * For now, the feature set is limited to restarting the platform by a
> + * soft-reset, but it might be extended in the future.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/init.h>
> +#include <linux/of_address.h>
> +#include <linux/io.h>
> +
> +static void __iomem *system_controller_base;
> +
> +struct mvebu_system_controller {
> + u32 rstoutn_mask_offset;
> + u32 system_soft_reset_offset;
> +
> + u32 rstoutn_mask_reset_out_en;
> + u32 system_soft_reset;
> +};
> +static struct mvebu_system_controller *mvebu_sc;
> +
> +const struct mvebu_system_controller armada_370_xp_system_controller = {
> + .rstoutn_mask_offset = 0x60,
> + .system_soft_reset_offset = 0x64,
> + .rstoutn_mask_reset_out_en = 0x1,
> + .system_soft_reset = 0x1,
> +};
> +
> +const struct mvebu_system_controller orion_system_controller = {
> + .rstoutn_mask_offset = 0x108,
> + .system_soft_reset_offset = 0x10c,
> + .rstoutn_mask_reset_out_en = 0x4,
> + .system_soft_reset = 0x1,
> +};
> +
> +static struct of_device_id of_system_controller_table[] = {
> + {
> + .compatible = "marvell,orion-system-controller",
> + .data = (void *) &orion_system_controller,
> + }, {
> + .compatible = "marvell,armada-370-xp-system-controller",
> + .data = (void *) &armada_370_xp_system_controller,
> + },
> + { /* end of list */ },
> +};
> +
> +void mvebu_restart(char mode, const char *cmd)
> +{
> + if (!system_controller_base) {
> + pr_err("Cannot restart, system-controller not available: check the device tree\n");
> + } else {
> + /*
> + * Enable soft reset to assert RSTOUTn.
> + */
> + writel(mvebu_sc->rstoutn_mask_reset_out_en,
> + system_controller_base +
> + mvebu_sc->rstoutn_mask_offset);
> + /*
> + * Assert soft reset.
> + */
> + writel(mvebu_sc->system_soft_reset,
> + system_controller_base +
> + mvebu_sc->system_soft_reset_offset);
> + }
> +
> + while (1)
> + ;
> +}
> +
> +static int __init mvebu_system_controller_init(void)
> +{
> + struct device_node *np;
> +
> + np = of_find_matching_node(NULL, of_system_controller_table);
> + if (np) {
> + const struct of_device_id *match =
> + of_match_node(of_system_controller_table, np);
> + BUG_ON(!match);
> + system_controller_base = of_iomap(np, 0);
> + mvebu_sc = (struct mvebu_system_controller *)match->data;
> + }
> +
> + return 0;
> +}
> +
> +arch_initcall(mvebu_system_controller_init);
> --
> 1.7.9.5
>
Acked-by: Andrew Lunn <andrew at lunn.ch>
I also already sent a tested-by: which you failed to add. I don't
think the changed are particularly significant, so please keep it.
Andrew
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