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author | Joseph Lo <josephl@nvidia.com> | 2013-02-28 21:32:10 +0000 |
---|---|---|
committer | Stephen Warren <swarren@nvidia.com> | 2013-03-11 14:29:44 -0600 |
commit | 291fde31a9e72ea81951f3f77444f61789276655 (patch) | |
tree | 02aa98454f1fa711ca2999da1aec433f566fbf03 /arch/arm/mach-tegra | |
parent | 2b84e53beb236aec89b7ef87b4fc970f175e4feb (diff) | |
download | linux-291fde31a9e72ea81951f3f77444f61789276655.tar.gz linux-291fde31a9e72ea81951f3f77444f61789276655.tar.bz2 linux-291fde31a9e72ea81951f3f77444f61789276655.zip |
ARM: tegra: pmc: convert PMC driver to support DT only
The Tegra kernel only support boot from DT now. Clean up the PMC driver
to support DT only, that includes:
* remove the ifdef of CONFIG_OF
* replace the static mapping of PMC addr to map from DT
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra')
-rw-r--r-- | arch/arm/mach-tegra/pmc.c | 51 |
1 files changed, 22 insertions, 29 deletions
diff --git a/arch/arm/mach-tegra/pmc.c b/arch/arm/mach-tegra/pmc.c index 5d79d34e2c0f..a916ecaa96e6 100644 --- a/arch/arm/mach-tegra/pmc.c +++ b/arch/arm/mach-tegra/pmc.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved. + * Copyright (C) 2012,2013 NVIDIA CORPORATION. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -18,59 +18,52 @@ #include <linux/kernel.h> #include <linux/io.h> #include <linux/of.h> - -#include "iomap.h" +#include <linux/of_address.h> #define PMC_CTRL 0x0 #define PMC_CTRL_INTR_LOW (1 << 17) +static void __iomem *tegra_pmc_base; +static bool tegra_pmc_invert_interrupt; + static inline u32 tegra_pmc_readl(u32 reg) { - return readl(IO_ADDRESS(TEGRA_PMC_BASE + reg)); + return readl(tegra_pmc_base + reg); } static inline void tegra_pmc_writel(u32 val, u32 reg) { - writel(val, IO_ADDRESS(TEGRA_PMC_BASE + reg)); + writel(val, tegra_pmc_base + reg); } -#ifdef CONFIG_OF static const struct of_device_id matches[] __initconst = { { .compatible = "nvidia,tegra114-pmc" }, { .compatible = "nvidia,tegra30-pmc" }, { .compatible = "nvidia,tegra20-pmc" }, { } }; -#endif -void __init tegra_pmc_init(void) +static void tegra_pmc_parse_dt(void) { - /* - * For now, Harmony is the only board that uses the PMC, and it wants - * the signal inverted. Seaboard would too if it used the PMC. - * Hopefully by the time other boards want to use the PMC, everything - * will be device-tree, or they also want it inverted. - */ - bool invert_interrupt = true; - u32 val; + struct device_node *np; + + np = of_find_matching_node(NULL, matches); + BUG_ON(!np); -#ifdef CONFIG_OF - if (of_have_populated_dt()) { - struct device_node *np; + tegra_pmc_base = of_iomap(np, 0); - invert_interrupt = false; + tegra_pmc_invert_interrupt = of_property_read_bool(np, + "nvidia,invert-interrupt"); +} + +void __init tegra_pmc_init(void) +{ + u32 val; - np = of_find_matching_node(NULL, matches); - if (np) { - if (of_find_property(np, "nvidia,invert-interrupt", - NULL)) - invert_interrupt = true; - } - } -#endif + tegra_pmc_parse_dt(); val = tegra_pmc_readl(PMC_CTRL); - if (invert_interrupt) + if (tegra_pmc_invert_interrupt) val |= PMC_CTRL_INTR_LOW; else val &= ~PMC_CTRL_INTR_LOW; |