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-rw-r--r--arch/arm/mach-tegra/pmc.c414
1 files changed, 0 insertions, 414 deletions
diff --git a/arch/arm/mach-tegra/pmc.c b/arch/arm/mach-tegra/pmc.c
deleted file mode 100644
index 69df18090c8b..000000000000
--- a/arch/arm/mach-tegra/pmc.c
+++ /dev/null
@@ -1,414 +0,0 @@
-/*
- * 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,
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-
-#include <soc/tegra/fuse.h>
-#include <soc/tegra/powergate.h>
-
-#include "flowctrl.h"
-#include "pm.h"
-#include "pmc.h"
-#include "sleep.h"
-
-#define TEGRA_POWER_SYSCLK_POLARITY (1 << 10) /* sys clk polarity */
-#define TEGRA_POWER_SYSCLK_OE (1 << 11) /* system clock enable */
-#define TEGRA_POWER_EFFECT_LP0 (1 << 14) /* LP0 when CPU pwr gated */
-#define TEGRA_POWER_CPU_PWRREQ_POLARITY (1 << 15) /* CPU pwr req polarity */
-#define TEGRA_POWER_CPU_PWRREQ_OE (1 << 16) /* CPU pwr req enable */
-
-#define PMC_CTRL 0x0
-#define PMC_CTRL_INTR_LOW (1 << 17)
-#define PMC_PWRGATE_TOGGLE 0x30
-#define PMC_PWRGATE_TOGGLE_START (1 << 8)
-#define PMC_REMOVE_CLAMPING 0x34
-#define PMC_PWRGATE_STATUS 0x38
-
-#define PMC_SCRATCH0 0x50
-#define PMC_SCRATCH0_MODE_RECOVERY (1 << 31)
-#define PMC_SCRATCH0_MODE_BOOTLOADER (1 << 30)
-#define PMC_SCRATCH0_MODE_RCM (1 << 1)
-#define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \
- PMC_SCRATCH0_MODE_BOOTLOADER | \
- PMC_SCRATCH0_MODE_RCM)
-
-#define PMC_CPUPWRGOOD_TIMER 0xc8
-#define PMC_CPUPWROFF_TIMER 0xcc
-
-static u8 tegra_cpu_domains[] = {
- 0xFF, /* not available for CPU0 */
- TEGRA_POWERGATE_CPU1,
- TEGRA_POWERGATE_CPU2,
- TEGRA_POWERGATE_CPU3,
-};
-static DEFINE_SPINLOCK(tegra_powergate_lock);
-
-static void __iomem *tegra_pmc_base;
-static bool tegra_pmc_invert_interrupt;
-static struct clk *tegra_pclk;
-
-struct pmc_pm_data {
- u32 cpu_good_time; /* CPU power good time in uS */
- u32 cpu_off_time; /* CPU power off time in uS */
- u32 core_osc_time; /* Core power good osc time in uS */
- u32 core_pmu_time; /* Core power good pmu time in uS */
- u32 core_off_time; /* Core power off time in uS */
- bool corereq_high; /* Core power request active-high */
- bool sysclkreq_high; /* System clock request active-high */
- bool combined_req; /* Combined pwr req for CPU & Core */
- bool cpu_pwr_good_en; /* CPU power good signal is enabled */
- u32 lp0_vec_phy_addr; /* The phy addr of LP0 warm boot code */
- u32 lp0_vec_size; /* The size of LP0 warm boot code */
- enum tegra_suspend_mode suspend_mode;
-};
-static struct pmc_pm_data pmc_pm_data;
-
-static inline u32 tegra_pmc_readl(u32 reg)
-{
- return readl(tegra_pmc_base + reg);
-}
-
-static inline void tegra_pmc_writel(u32 val, u32 reg)
-{
- writel(val, tegra_pmc_base + reg);
-}
-
-static int tegra_pmc_get_cpu_powerdomain_id(int cpuid)
-{
- if (cpuid <= 0 || cpuid >= num_possible_cpus())
- return -EINVAL;
- return tegra_cpu_domains[cpuid];
-}
-
-static bool tegra_pmc_powergate_is_powered(int id)
-{
- return (tegra_pmc_readl(PMC_PWRGATE_STATUS) >> id) & 1;
-}
-
-static int tegra_pmc_powergate_set(int id, bool new_state)
-{
- bool old_state;
- unsigned long flags;
-
- spin_lock_irqsave(&tegra_powergate_lock, flags);
-
- old_state = tegra_pmc_powergate_is_powered(id);
- WARN_ON(old_state == new_state);
-
- tegra_pmc_writel(PMC_PWRGATE_TOGGLE_START | id, PMC_PWRGATE_TOGGLE);
-
- spin_unlock_irqrestore(&tegra_powergate_lock, flags);
-
- return 0;
-}
-
-static int tegra_pmc_powergate_remove_clamping(int id)
-{
- u32 mask;
-
- /*
- * Tegra has a bug where PCIE and VDE clamping masks are
- * swapped relatively to the partition ids.
- */
- if (id == TEGRA_POWERGATE_VDEC)
- mask = (1 << TEGRA_POWERGATE_PCIE);
- else if (id == TEGRA_POWERGATE_PCIE)
- mask = (1 << TEGRA_POWERGATE_VDEC);
- else
- mask = (1 << id);
-
- tegra_pmc_writel(mask, PMC_REMOVE_CLAMPING);
-
- return 0;
-}
-
-bool tegra_pmc_cpu_is_powered(int cpuid)
-{
- int id;
-
- id = tegra_pmc_get_cpu_powerdomain_id(cpuid);
- if (id < 0)
- return false;
- return tegra_pmc_powergate_is_powered(id);
-}
-
-int tegra_pmc_cpu_power_on(int cpuid)
-{
- int id;
-
- id = tegra_pmc_get_cpu_powerdomain_id(cpuid);
- if (id < 0)
- return id;
- return tegra_pmc_powergate_set(id, true);
-}
-
-int tegra_pmc_cpu_remove_clamping(int cpuid)
-{
- int id;
-
- id = tegra_pmc_get_cpu_powerdomain_id(cpuid);
- if (id < 0)
- return id;
- return tegra_pmc_powergate_remove_clamping(id);
-}
-
-void tegra_pmc_restart(enum reboot_mode mode, const char *cmd)
-{
- u32 val;
-
- val = tegra_pmc_readl(PMC_SCRATCH0);
- val &= ~PMC_SCRATCH0_MODE_MASK;
-
- if (cmd) {
- if (strcmp(cmd, "recovery") == 0)
- val |= PMC_SCRATCH0_MODE_RECOVERY;
-
- if (strcmp(cmd, "bootloader") == 0)
- val |= PMC_SCRATCH0_MODE_BOOTLOADER;
-
- if (strcmp(cmd, "forced-recovery") == 0)
- val |= PMC_SCRATCH0_MODE_RCM;
- }
-
- tegra_pmc_writel(val, PMC_SCRATCH0);
-
- val = tegra_pmc_readl(0);
- val |= 0x10;
- tegra_pmc_writel(val, 0);
-}
-
-#ifdef CONFIG_PM_SLEEP
-static void set_power_timers(u32 us_on, u32 us_off, unsigned long rate)
-{
- unsigned long long ticks;
- unsigned long long pclk;
- static unsigned long tegra_last_pclk;
-
- if (WARN_ON_ONCE(rate <= 0))
- pclk = 100000000;
- else
- pclk = rate;
-
- if ((rate != tegra_last_pclk)) {
- ticks = (us_on * pclk) + 999999ull;
- do_div(ticks, 1000000);
- tegra_pmc_writel((unsigned long)ticks, PMC_CPUPWRGOOD_TIMER);
-
- ticks = (us_off * pclk) + 999999ull;
- do_div(ticks, 1000000);
- tegra_pmc_writel((unsigned long)ticks, PMC_CPUPWROFF_TIMER);
- wmb();
- }
- tegra_last_pclk = pclk;
-}
-
-enum tegra_suspend_mode tegra_pmc_get_suspend_mode(void)
-{
- return pmc_pm_data.suspend_mode;
-}
-
-void tegra_pmc_set_suspend_mode(enum tegra_suspend_mode mode)
-{
- if (mode < TEGRA_SUSPEND_NONE || mode >= TEGRA_MAX_SUSPEND_MODE)
- return;
-
- pmc_pm_data.suspend_mode = mode;
-}
-
-void tegra_pmc_suspend(void)
-{
- tegra_pmc_writel(virt_to_phys(tegra_resume), PMC_SCRATCH41);
-}
-
-void tegra_pmc_resume(void)
-{
- tegra_pmc_writel(0x0, PMC_SCRATCH41);
-}
-
-void tegra_pmc_pm_set(enum tegra_suspend_mode mode)
-{
- u32 reg, csr_reg;
- unsigned long rate = 0;
-
- reg = tegra_pmc_readl(PMC_CTRL);
- reg |= TEGRA_POWER_CPU_PWRREQ_OE;
- reg &= ~TEGRA_POWER_EFFECT_LP0;
-
- switch (tegra_get_chip_id()) {
- case TEGRA20:
- case TEGRA30:
- break;
- default:
- /* Turn off CRAIL */
- csr_reg = flowctrl_read_cpu_csr(0);
- csr_reg &= ~FLOW_CTRL_CSR_ENABLE_EXT_MASK;
- csr_reg |= FLOW_CTRL_CSR_ENABLE_EXT_CRAIL;
- flowctrl_write_cpu_csr(0, csr_reg);
- break;
- }
-
- switch (mode) {
- case TEGRA_SUSPEND_LP1:
- rate = 32768;
- break;
- case TEGRA_SUSPEND_LP2:
- rate = clk_get_rate(tegra_pclk);
- break;
- default:
- break;
- }
-
- set_power_timers(pmc_pm_data.cpu_good_time, pmc_pm_data.cpu_off_time,
- rate);
-
- tegra_pmc_writel(reg, PMC_CTRL);
-}
-
-void tegra_pmc_suspend_init(void)
-{
- u32 reg;
-
- /* Always enable CPU power request */
- reg = tegra_pmc_readl(PMC_CTRL);
- reg |= TEGRA_POWER_CPU_PWRREQ_OE;
- tegra_pmc_writel(reg, PMC_CTRL);
-
- reg = tegra_pmc_readl(PMC_CTRL);
-
- if (!pmc_pm_data.sysclkreq_high)
- reg |= TEGRA_POWER_SYSCLK_POLARITY;
- else
- reg &= ~TEGRA_POWER_SYSCLK_POLARITY;
-
- /* configure the output polarity while the request is tristated */
- tegra_pmc_writel(reg, PMC_CTRL);
-
- /* now enable the request */
- reg |= TEGRA_POWER_SYSCLK_OE;
- tegra_pmc_writel(reg, PMC_CTRL);
-}
-#endif
-
-static const struct of_device_id matches[] __initconst = {
- { .compatible = "nvidia,tegra124-pmc" },
- { .compatible = "nvidia,tegra114-pmc" },
- { .compatible = "nvidia,tegra30-pmc" },
- { .compatible = "nvidia,tegra20-pmc" },
- { }
-};
-
-void __init tegra_pmc_init_irq(void)
-{
- struct device_node *np;
- u32 val;
-
- np = of_find_matching_node(NULL, matches);
- BUG_ON(!np);
-
- tegra_pmc_base = of_iomap(np, 0);
-
- tegra_pmc_invert_interrupt = of_property_read_bool(np,
- "nvidia,invert-interrupt");
-
- val = tegra_pmc_readl(PMC_CTRL);
- if (tegra_pmc_invert_interrupt)
- val |= PMC_CTRL_INTR_LOW;
- else
- val &= ~PMC_CTRL_INTR_LOW;
- tegra_pmc_writel(val, PMC_CTRL);
-}
-
-void __init tegra_pmc_init(void)
-{
- struct device_node *np;
- u32 prop;
- enum tegra_suspend_mode suspend_mode;
- u32 core_good_time[2] = {0, 0};
- u32 lp0_vec[2] = {0, 0};
-
- np = of_find_matching_node(NULL, matches);
- BUG_ON(!np);
-
- tegra_pclk = of_clk_get_by_name(np, "pclk");
- WARN_ON(IS_ERR(tegra_pclk));
-
- /* Grabbing the power management configurations */
- if (of_property_read_u32(np, "nvidia,suspend-mode", &prop)) {
- suspend_mode = TEGRA_SUSPEND_NONE;
- } else {
- switch (prop) {
- case 0:
- suspend_mode = TEGRA_SUSPEND_LP0;
- break;
- case 1:
- suspend_mode = TEGRA_SUSPEND_LP1;
- break;
- case 2:
- suspend_mode = TEGRA_SUSPEND_LP2;
- break;
- default:
- suspend_mode = TEGRA_SUSPEND_NONE;
- break;
- }
- }
- suspend_mode = tegra_pm_validate_suspend_mode(suspend_mode);
-
- if (of_property_read_u32(np, "nvidia,cpu-pwr-good-time", &prop))
- suspend_mode = TEGRA_SUSPEND_NONE;
- pmc_pm_data.cpu_good_time = prop;
-
- if (of_property_read_u32(np, "nvidia,cpu-pwr-off-time", &prop))
- suspend_mode = TEGRA_SUSPEND_NONE;
- pmc_pm_data.cpu_off_time = prop;
-
- if (of_property_read_u32_array(np, "nvidia,core-pwr-good-time",
- core_good_time, ARRAY_SIZE(core_good_time)))
- suspend_mode = TEGRA_SUSPEND_NONE;
- pmc_pm_data.core_osc_time = core_good_time[0];
- pmc_pm_data.core_pmu_time = core_good_time[1];
-
- if (of_property_read_u32(np, "nvidia,core-pwr-off-time",
- &prop))
- suspend_mode = TEGRA_SUSPEND_NONE;
- pmc_pm_data.core_off_time = prop;
-
- pmc_pm_data.corereq_high = of_property_read_bool(np,
- "nvidia,core-power-req-active-high");
-
- pmc_pm_data.sysclkreq_high = of_property_read_bool(np,
- "nvidia,sys-clock-req-active-high");
-
- pmc_pm_data.combined_req = of_property_read_bool(np,
- "nvidia,combined-power-req");
-
- pmc_pm_data.cpu_pwr_good_en = of_property_read_bool(np,
- "nvidia,cpu-pwr-good-en");
-
- if (of_property_read_u32_array(np, "nvidia,lp0-vec", lp0_vec,
- ARRAY_SIZE(lp0_vec)))
- if (suspend_mode == TEGRA_SUSPEND_LP0)
- suspend_mode = TEGRA_SUSPEND_LP1;
-
- pmc_pm_data.lp0_vec_phy_addr = lp0_vec[0];
- pmc_pm_data.lp0_vec_size = lp0_vec[1];
-
- pmc_pm_data.suspend_mode = suspend_mode;
-}
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