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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-02 03:17:40 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-02 03:17:40 +0300 |
commit | adbc128fa8b4e9ecfdd11d5dd0a7d9845c6ea510 (patch) | |
tree | 55137f446ffd127530fdcbe86dafdfb436fe1c20 /drivers/soc/tegra/pmc-tegra186.c | |
parent | 537433b6241e067de2d9da3bed5f4fed9c9eac58 (diff) | |
parent | 0ca14cdea789f70c4dc7ef5844aad52cb9675aee (diff) | |
download | linux-adbc128fa8b4e9ecfdd11d5dd0a7d9845c6ea510.tar.xz |
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform updates from Arnd Bergmann:
"These are mostly minor bugfixes, cleanup and many defconfig updates to
support added drivers. In particular OMAP and PXA keep cleaning up the
legacy code base, as usual.
Nvidia adds some more SoC support code for Tegra 186.
For the first time on years, we are actually adding a non-DT platform
for the EP93xx based Liebherr controller BK3.1. It's a minor variation
of the EP93xx reference design and in active use, while EP93xx
apparently doesn't have enough new development to have any device tree
support"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (73 commits)
ARM: omap: hwmod: fix section mismatch warnings
ARM: pxa/tosa-bt: add MODULE_LICENSE tag
arm64: defconfig: enable CONFIG_ACPI_APEI_EINJ
arm64: defconfig: enable EDAC GHES option
arm64: defconfig: enable CONFIG_ACPI_APEI_MEMORY_FAILURE
ARM: imx_v6_v7_defconfig: enable CONFIG_CPU_FREQ_STAT
Wind down ARM/TANGO port
ARM: davinci: constify gpio_led
ARM: davinci: drop unneeded newline
soc: Add SoC driver for Gemini
ARM: SAMSUNG: Add SPDX license identifiers
ARM: S5PV210: Add SPDX license identifiers
ARM: S3C64XX: Add SPDX license identifiers
ARM: S3C24XX: Add SPDX license identifiers
ARM: EXYNOS: Add SPDX license identifiers
ARM: imx: remove unused imx3 pm definitions
ARM: imx: don't abort MMDC probe if power saving status doesn't match
ARM: imx_v6_v7_defconfig: enable RTC_DRV_MXC_V2
ARM: imx_v6_v7_defconfig: Add missing config for DART-MX6 SoM
ARM: davinci: Use PTR_ERR_OR_ZERO()
...
Diffstat (limited to 'drivers/soc/tegra/pmc-tegra186.c')
-rw-r--r-- | drivers/soc/tegra/pmc-tegra186.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/drivers/soc/tegra/pmc-tegra186.c b/drivers/soc/tegra/pmc-tegra186.c deleted file mode 100644 index 6f5c6f98ba92..000000000000 --- a/drivers/soc/tegra/pmc-tegra186.c +++ /dev/null @@ -1,169 +0,0 @@ -/* - * Copyright (c) 2016, 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, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope 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. - */ - -#define pr_fmt(fmt) "tegra-pmc: " fmt - -#include <linux/io.h> -#include <linux/module.h> -#include <linux/of.h> -#include <linux/platform_device.h> -#include <linux/reboot.h> - -#include <asm/system_misc.h> - -#define PMC_CNTRL 0x000 -#define PMC_CNTRL_MAIN_RST BIT(4) - -#define PMC_RST_STATUS 0x070 - -#define WAKE_AOWAKE_CTRL 0x4f4 -#define WAKE_AOWAKE_CTRL_INTR_POLARITY BIT(0) - -#define SCRATCH_SCRATCH0 0x2000 -#define SCRATCH_SCRATCH0_MODE_RECOVERY BIT(31) -#define SCRATCH_SCRATCH0_MODE_BOOTLOADER BIT(30) -#define SCRATCH_SCRATCH0_MODE_RCM BIT(1) -#define SCRATCH_SCRATCH0_MODE_MASK (SCRATCH_SCRATCH0_MODE_RECOVERY | \ - SCRATCH_SCRATCH0_MODE_BOOTLOADER | \ - SCRATCH_SCRATCH0_MODE_RCM) - -struct tegra_pmc { - struct device *dev; - void __iomem *regs; - void __iomem *wake; - void __iomem *aotag; - void __iomem *scratch; - - void (*system_restart)(enum reboot_mode mode, const char *cmd); - struct notifier_block restart; -}; - -static int tegra186_pmc_restart_notify(struct notifier_block *nb, - unsigned long action, - void *data) -{ - struct tegra_pmc *pmc = container_of(nb, struct tegra_pmc, restart); - const char *cmd = data; - u32 value; - - value = readl(pmc->scratch + SCRATCH_SCRATCH0); - value &= ~SCRATCH_SCRATCH0_MODE_MASK; - - if (cmd) { - if (strcmp(cmd, "recovery") == 0) - value |= SCRATCH_SCRATCH0_MODE_RECOVERY; - - if (strcmp(cmd, "bootloader") == 0) - value |= SCRATCH_SCRATCH0_MODE_BOOTLOADER; - - if (strcmp(cmd, "forced-recovery") == 0) - value |= SCRATCH_SCRATCH0_MODE_RCM; - } - - writel(value, pmc->scratch + SCRATCH_SCRATCH0); - - /* - * If available, call the system restart implementation that was - * registered earlier (typically PSCI). - */ - if (pmc->system_restart) { - pmc->system_restart(reboot_mode, cmd); - return NOTIFY_DONE; - } - - /* reset everything but SCRATCH0_SCRATCH0 and PMC_RST_STATUS */ - value = readl(pmc->regs + PMC_CNTRL); - value |= PMC_CNTRL_MAIN_RST; - writel(value, pmc->regs + PMC_CNTRL); - - return NOTIFY_DONE; -} - -static int tegra186_pmc_setup(struct tegra_pmc *pmc) -{ - struct device_node *np = pmc->dev->of_node; - bool invert; - u32 value; - - invert = of_property_read_bool(np, "nvidia,invert-interrupt"); - - value = readl(pmc->wake + WAKE_AOWAKE_CTRL); - - if (invert) - value |= WAKE_AOWAKE_CTRL_INTR_POLARITY; - else - value &= ~WAKE_AOWAKE_CTRL_INTR_POLARITY; - - writel(value, pmc->wake + WAKE_AOWAKE_CTRL); - - /* - * We need to hook any system restart implementation registered - * previously so we can write SCRATCH_SCRATCH0 before reset. - */ - pmc->system_restart = arm_pm_restart; - arm_pm_restart = NULL; - - pmc->restart.notifier_call = tegra186_pmc_restart_notify; - pmc->restart.priority = 128; - - return register_restart_handler(&pmc->restart); -} - -static int tegra186_pmc_probe(struct platform_device *pdev) -{ - struct tegra_pmc *pmc; - struct resource *res; - - pmc = devm_kzalloc(&pdev->dev, sizeof(*pmc), GFP_KERNEL); - if (!pmc) - return -ENOMEM; - - pmc->dev = &pdev->dev; - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pmc"); - pmc->regs = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(pmc->regs)) - return PTR_ERR(pmc->regs); - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wake"); - pmc->wake = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(pmc->wake)) - return PTR_ERR(pmc->wake); - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "aotag"); - pmc->aotag = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(pmc->aotag)) - return PTR_ERR(pmc->aotag); - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "scratch"); - pmc->scratch = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(pmc->scratch)) - return PTR_ERR(pmc->scratch); - - return tegra186_pmc_setup(pmc); -} - -static const struct of_device_id tegra186_pmc_of_match[] = { - { .compatible = "nvidia,tegra186-pmc" }, - { /* sentinel */ } -}; -MODULE_DEVICE_TABLE(of, tegra186_pmc_of_match); - -static struct platform_driver tegra186_pmc_driver = { - .driver = { - .name = "tegra186-pmc", - .of_match_table = tegra186_pmc_of_match, - }, - .probe = tegra186_pmc_probe, -}; -builtin_platform_driver(tegra186_pmc_driver); |