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Diffstat (limited to 'drivers/soc/tegra/pmc-tegra186.c')
-rw-r--r--drivers/soc/tegra/pmc-tegra186.c169
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);

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