| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * drivers/soc/tegra/pmc.c |
| * |
| * Copyright (c) 2010 Google, Inc |
| * Copyright (c) 2018-2022, NVIDIA CORPORATION. All rights reserved. |
| * |
| * Author: |
| * Colin Cross <ccross@google.com> |
| */ |
| |
| #define pr_fmt(fmt) "tegra-pmc: " fmt |
| |
| #include <linux/arm-smccc.h> |
| #include <linux/clk.h> |
| #include <linux/clk-provider.h> |
| #include <linux/clkdev.h> |
| #include <linux/clk/clk-conf.h> |
| #include <linux/clk/tegra.h> |
| #include <linux/debugfs.h> |
| #include <linux/delay.h> |
| #include <linux/device.h> |
| #include <linux/err.h> |
| #include <linux/export.h> |
| #include <linux/init.h> |
| #include <linux/io.h> |
| #include <linux/iopoll.h> |
| #include <linux/irqdomain.h> |
| #include <linux/irq.h> |
| #include <linux/kernel.h> |
| #include <linux/of_address.h> |
| #include <linux/of_clk.h> |
| #include <linux/of.h> |
| #include <linux/of_irq.h> |
| #include <linux/of_platform.h> |
| #include <linux/pinctrl/pinconf-generic.h> |
| #include <linux/pinctrl/pinconf.h> |
| #include <linux/pinctrl/pinctrl.h> |
| #include <linux/platform_device.h> |
| #include <linux/pm_domain.h> |
| #include <linux/pm_opp.h> |
| #include <linux/power_supply.h> |
| #include <linux/reboot.h> |
| #include <linux/regmap.h> |
| #include <linux/reset.h> |
| #include <linux/seq_file.h> |
| #include <linux/slab.h> |
| #include <linux/spinlock.h> |
| |
| #include <soc/tegra/common.h> |
| #include <soc/tegra/fuse.h> |
| #include <soc/tegra/pmc.h> |
| |
| #include <dt-bindings/interrupt-controller/arm-gic.h> |
| #include <dt-bindings/pinctrl/pinctrl-tegra-io-pad.h> |
| #include <dt-bindings/gpio/tegra186-gpio.h> |
| #include <dt-bindings/gpio/tegra194-gpio.h> |
| #include <dt-bindings/gpio/tegra234-gpio.h> |
| #include <dt-bindings/soc/tegra-pmc.h> |
| |
| #define PMC_CNTRL 0x0 |
| #define PMC_CNTRL_INTR_POLARITY BIT(17) /* inverts INTR polarity */ |
| #define PMC_CNTRL_CPU_PWRREQ_OE BIT(16) /* CPU pwr req enable */ |
| #define PMC_CNTRL_CPU_PWRREQ_POLARITY BIT(15) /* CPU pwr req polarity */ |
| #define PMC_CNTRL_SIDE_EFFECT_LP0 BIT(14) /* LP0 when CPU pwr gated */ |
| #define PMC_CNTRL_SYSCLK_OE BIT(11) /* system clock enable */ |
| #define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */ |
| #define PMC_CNTRL_PWRREQ_POLARITY BIT(8) |
| #define PMC_CNTRL_BLINK_EN 7 |
| #define PMC_CNTRL_MAIN_RST BIT(4) |
| |
| #define PMC_WAKE_MASK 0x0c |
| #define PMC_WAKE_LEVEL 0x10 |
| #define PMC_WAKE_STATUS 0x14 |
| #define PMC_SW_WAKE_STATUS 0x18 |
| #define PMC_DPD_PADS_ORIDE 0x1c |
| #define PMC_DPD_PADS_ORIDE_BLINK 20 |
| |
| #define DPD_SAMPLE 0x020 |
| #define DPD_SAMPLE_ENABLE BIT(0) |
| #define DPD_SAMPLE_DISABLE (0 << 0) |
| |
| #define PWRGATE_TOGGLE 0x30 |
| #define PWRGATE_TOGGLE_START BIT(8) |
| |
| #define REMOVE_CLAMPING 0x34 |
| |
| #define PWRGATE_STATUS 0x38 |
| |
| #define PMC_BLINK_TIMER 0x40 |
| #define PMC_IMPL_E_33V_PWR 0x40 |
| |
| #define PMC_PWR_DET 0x48 |
| |
| #define PMC_SCRATCH0_MODE_RECOVERY BIT(31) |
| #define PMC_SCRATCH0_MODE_BOOTLOADER BIT(30) |
| #define PMC_SCRATCH0_MODE_RCM BIT(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 |
| #define PMC_COREPWRGOOD_TIMER 0x3c |
| #define PMC_COREPWROFF_TIMER 0xe0 |
| |
| #define PMC_PWR_DET_VALUE 0xe4 |
| |
| #define PMC_USB_DEBOUNCE_DEL 0xec |
| #define PMC_USB_AO 0xf0 |
| |
| #define PMC_SCRATCH37 0x130 |
| #define PMC_SCRATCH41 0x140 |
| |
| #define PMC_WAKE2_MASK 0x160 |
| #define PMC_WAKE2_LEVEL 0x164 |
| #define PMC_WAKE2_STATUS 0x168 |
| #define PMC_SW_WAKE2_STATUS 0x16c |
| |
| #define PMC_CLK_OUT_CNTRL 0x1a8 |
| #define PMC_CLK_OUT_MUX_MASK GENMASK(1, 0) |
| #define PMC_SENSOR_CTRL 0x1b0 |
| #define PMC_SENSOR_CTRL_SCRATCH_WRITE BIT(2) |
| #define PMC_SENSOR_CTRL_ENABLE_RST BIT(1) |
| |
| #define PMC_RST_STATUS_POR 0 |
| #define PMC_RST_STATUS_WATCHDOG 1 |
| #define PMC_RST_STATUS_SENSOR 2 |
| #define PMC_RST_STATUS_SW_MAIN 3 |
| #define PMC_RST_STATUS_LP0 4 |
| #define PMC_RST_STATUS_AOTAG 5 |
| |
| #define IO_DPD_REQ 0x1b8 |
| #define IO_DPD_REQ_CODE_IDLE (0U << 30) |
| #define IO_DPD_REQ_CODE_OFF (1U << 30) |
| #define IO_DPD_REQ_CODE_ON (2U << 30) |
| #define IO_DPD_REQ_CODE_MASK (3U << 30) |
| |
| #define IO_DPD_STATUS 0x1bc |
| #define IO_DPD2_REQ 0x1c0 |
| #define IO_DPD2_STATUS 0x1c4 |
| #define SEL_DPD_TIM 0x1c8 |
| |
| #define PMC_UTMIP_UHSIC_TRIGGERS 0x1ec |
| #define PMC_UTMIP_UHSIC_SAVED_STATE 0x1f0 |
| |
| #define PMC_UTMIP_TERM_PAD_CFG 0x1f8 |
| #define PMC_UTMIP_UHSIC_SLEEP_CFG 0x1fc |
| #define PMC_UTMIP_UHSIC_FAKE 0x218 |
| |
| #define PMC_SCRATCH54 0x258 |
| #define PMC_SCRATCH54_DATA_SHIFT 8 |
| #define PMC_SCRATCH54_ADDR_SHIFT 0 |
| |
| #define PMC_SCRATCH55 0x25c |
| #define PMC_SCRATCH55_RESET_TEGRA BIT(31) |
| #define PMC_SCRATCH55_CNTRL_ID_SHIFT 27 |
| #define PMC_SCRATCH55_PINMUX_SHIFT 24 |
| #define PMC_SCRATCH55_16BITOP BIT(15) |
| #define PMC_SCRATCH55_CHECKSUM_SHIFT 16 |
| #define PMC_SCRATCH55_I2CSLV1_SHIFT 0 |
| |
| #define PMC_UTMIP_UHSIC_LINE_WAKEUP 0x26c |
| |
| #define PMC_UTMIP_BIAS_MASTER_CNTRL 0x270 |
| #define PMC_UTMIP_MASTER_CONFIG 0x274 |
| #define PMC_UTMIP_UHSIC2_TRIGGERS 0x27c |
| #define PMC_UTMIP_MASTER2_CONFIG 0x29c |
| |
| #define GPU_RG_CNTRL 0x2d4 |
| |
| #define PMC_UTMIP_PAD_CFG0 0x4c0 |
| #define PMC_UTMIP_UHSIC_SLEEP_CFG1 0x4d0 |
| #define PMC_UTMIP_SLEEPWALK_P3 0x4e0 |
| /* Tegra186 and later */ |
| #define WAKE_AOWAKE_CNTRL(x) (0x000 + ((x) << 2)) |
| #define WAKE_AOWAKE_CNTRL_LEVEL (1 << 3) |
| #define WAKE_AOWAKE_MASK_W(x) (0x180 + ((x) << 2)) |
| #define WAKE_AOWAKE_MASK_R(x) (0x300 + ((x) << 2)) |
| #define WAKE_AOWAKE_STATUS_W(x) (0x30c + ((x) << 2)) |
| #define WAKE_AOWAKE_STATUS_R(x) (0x48c + ((x) << 2)) |
| #define WAKE_AOWAKE_TIER0_ROUTING(x) (0x4b4 + ((x) << 2)) |
| #define WAKE_AOWAKE_TIER1_ROUTING(x) (0x4c0 + ((x) << 2)) |
| #define WAKE_AOWAKE_TIER2_ROUTING(x) (0x4cc + ((x) << 2)) |
| |
| #define WAKE_AOWAKE_CTRL 0x4f4 |
| #define WAKE_AOWAKE_CTRL_INTR_POLARITY BIT(0) |
| |
| /* for secure PMC */ |
| #define TEGRA_SMC_PMC 0xc2fffe00 |
| #define TEGRA_SMC_PMC_READ 0xaa |
| #define TEGRA_SMC_PMC_WRITE 0xbb |
| |
| struct pmc_clk { |
| struct clk_hw hw; |
| unsigned long offs; |
| u32 mux_shift; |
| u32 force_en_shift; |
| }; |
| |
| #define to_pmc_clk(_hw) container_of(_hw, struct pmc_clk, hw) |
| |
| struct pmc_clk_gate { |
| struct clk_hw hw; |
| unsigned long offs; |
| u32 shift; |
| }; |
| |
| #define to_pmc_clk_gate(_hw) container_of(_hw, struct pmc_clk_gate, hw) |
| |
| struct pmc_clk_init_data { |
| char *name; |
| const char *const *parents; |
| int num_parents; |
| int clk_id; |
| u8 mux_shift; |
| u8 force_en_shift; |
| }; |
| |
| static const char * const clk_out1_parents[] = { "osc", "osc_div2", |
| "osc_div4", "extern1", |
| }; |
| |
| static const char * const clk_out2_parents[] = { "osc", "osc_div2", |
| "osc_div4", "extern2", |
| }; |
| |
| static const char * const clk_out3_parents[] = { "osc", "osc_div2", |
| "osc_div4", "extern3", |
| }; |
| |
| static const struct pmc_clk_init_data tegra_pmc_clks_data[] = { |
| { |
| .name = "pmc_clk_out_1", |
| .parents = clk_out1_parents, |
| .num_parents = ARRAY_SIZE(clk_out1_parents), |
| .clk_id = TEGRA_PMC_CLK_OUT_1, |
| .mux_shift = 6, |
| .force_en_shift = 2, |
| }, |
| { |
| .name = "pmc_clk_out_2", |
| .parents = clk_out2_parents, |
| .num_parents = ARRAY_SIZE(clk_out2_parents), |
| .clk_id = TEGRA_PMC_CLK_OUT_2, |
| .mux_shift = 14, |
| .force_en_shift = 10, |
| }, |
| { |
| .name = "pmc_clk_out_3", |
| .parents = clk_out3_parents, |
| .num_parents = ARRAY_SIZE(clk_out3_parents), |
| .clk_id = TEGRA_PMC_CLK_OUT_3, |
| .mux_shift = 22, |
| .force_en_shift = 18, |
| }, |
| }; |
| |
| struct tegra_powergate { |
| struct generic_pm_domain genpd; |
| struct tegra_pmc *pmc; |
| unsigned int id; |
| struct clk **clks; |
| unsigned int num_clks; |
| unsigned long *clk_rates; |
| struct reset_control *reset; |
| }; |
| |
| struct tegra_io_pad_soc { |
| enum tegra_io_pad id; |
| unsigned int dpd; |
| unsigned int voltage; |
| const char *name; |
| }; |
| |
| struct tegra_pmc_regs { |
| unsigned int scratch0; |
| unsigned int dpd_req; |
| unsigned int dpd_status; |
| unsigned int dpd2_req; |
| unsigned int dpd2_status; |
| unsigned int rst_status; |
| unsigned int rst_source_shift; |
| unsigned int rst_source_mask; |
| unsigned int rst_level_shift; |
| unsigned int rst_level_mask; |
| }; |
| |
| struct tegra_wake_event { |
| const char *name; |
| unsigned int id; |
| unsigned int irq; |
| struct { |
| unsigned int instance; |
| unsigned int pin; |
| } gpio; |
| }; |
| |
| #define TEGRA_WAKE_SIMPLE(_name, _id) \ |
| { \ |
| .name = _name, \ |
| .id = _id, \ |
| .irq = 0, \ |
| .gpio = { \ |
| .instance = UINT_MAX, \ |
| .pin = UINT_MAX, \ |
| }, \ |
| } |
| |
| #define TEGRA_WAKE_IRQ(_name, _id, _irq) \ |
| { \ |
| .name = _name, \ |
| .id = _id, \ |
| .irq = _irq, \ |
| .gpio = { \ |
| .instance = UINT_MAX, \ |
| .pin = UINT_MAX, \ |
| }, \ |
| } |
| |
| #define TEGRA_WAKE_GPIO(_name, _id, _instance, _pin) \ |
| { \ |
| .name = _name, \ |
| .id = _id, \ |
| .irq = 0, \ |
| .gpio = { \ |
| .instance = _instance, \ |
| .pin = _pin, \ |
| }, \ |
| } |
| |
| struct tegra_pmc_soc { |
| unsigned int num_powergates; |
| const char *const *powergates; |
| unsigned int num_cpu_powergates; |
| const u8 *cpu_powergates; |
| |
| bool has_tsense_reset; |
| bool has_gpu_clamps; |
| bool needs_mbist_war; |
| bool has_impl_33v_pwr; |
| bool maybe_tz_only; |
| |
| const struct tegra_io_pad_soc *io_pads; |
| unsigned int num_io_pads; |
| |
| const struct pinctrl_pin_desc *pin_descs; |
| unsigned int num_pin_descs; |
| |
| const struct tegra_pmc_regs *regs; |
| void (*init)(struct tegra_pmc *pmc); |
| void (*setup_irq_polarity)(struct tegra_pmc *pmc, |
| struct device_node *np, |
| bool invert); |
| int (*irq_set_wake)(struct irq_data *data, unsigned int on); |
| int (*irq_set_type)(struct irq_data *data, unsigned int type); |
| int (*powergate_set)(struct tegra_pmc *pmc, unsigned int id, |
| bool new_state); |
| |
| const char * const *reset_sources; |
| unsigned int num_reset_sources; |
| const char * const *reset_levels; |
| unsigned int num_reset_levels; |
| |
| /* |
| * These describe events that can wake the system from sleep (i.e. |
| * LP0 or SC7). Wakeup from other sleep states (such as LP1 or LP2) |
| * are dealt with in the LIC. |
| */ |
| const struct tegra_wake_event *wake_events; |
| unsigned int num_wake_events; |
| |
| const struct pmc_clk_init_data *pmc_clks_data; |
| unsigned int num_pmc_clks; |
| bool has_blink_output; |
| bool has_usb_sleepwalk; |
| bool supports_core_domain; |
| }; |
| |
| /** |
| * struct tegra_pmc - NVIDIA Tegra PMC |
| * @dev: pointer to PMC device structure |
| * @base: pointer to I/O remapped register region |
| * @wake: pointer to I/O remapped region for WAKE registers |
| * @aotag: pointer to I/O remapped region for AOTAG registers |
| * @scratch: pointer to I/O remapped region for scratch registers |
| * @clk: pointer to pclk clock |
| * @soc: pointer to SoC data structure |
| * @tz_only: flag specifying if the PMC can only be accessed via TrustZone |
| * @debugfs: pointer to debugfs entry |
| * @rate: currently configured rate of pclk |
| * @suspend_mode: lowest suspend mode available |
| * @cpu_good_time: CPU power good time (in microseconds) |
| * @cpu_off_time: CPU power off time (in microsecends) |
| * @core_osc_time: core power good OSC time (in microseconds) |
| * @core_pmu_time: core power good PMU time (in microseconds) |
| * @core_off_time: core power off time (in microseconds) |
| * @corereq_high: core power request is active-high |
| * @sysclkreq_high: system clock request is active-high |
| * @combined_req: combined power request for CPU & core |
| * @cpu_pwr_good_en: CPU power good signal is enabled |
| * @lp0_vec_phys: physical base address of the LP0 warm boot code |
| * @lp0_vec_size: size of the LP0 warm boot code |
| * @powergates_available: Bitmap of available power gates |
| * @powergates_lock: mutex for power gate register access |
| * @pctl_dev: pin controller exposed by the PMC |
| * @domain: IRQ domain provided by the PMC |
| * @irq: chip implementation for the IRQ domain |
| * @clk_nb: pclk clock changes handler |
| * @core_domain_state_synced: flag marking the core domain's state as synced |
| * @core_domain_registered: flag marking the core domain as registered |
| */ |
| struct tegra_pmc { |
| struct device *dev; |
| void __iomem *base; |
| void __iomem *wake; |
| void __iomem *aotag; |
| void __iomem *scratch; |
| struct clk *clk; |
| struct dentry *debugfs; |
| |
| const struct tegra_pmc_soc *soc; |
| bool tz_only; |
| |
| unsigned long rate; |
| |
| enum tegra_suspend_mode suspend_mode; |
| u32 cpu_good_time; |
| u32 cpu_off_time; |
| u32 core_osc_time; |
| u32 core_pmu_time; |
| u32 core_off_time; |
| bool corereq_high; |
| bool sysclkreq_high; |
| bool combined_req; |
| bool cpu_pwr_good_en; |
| u32 lp0_vec_phys; |
| u32 lp0_vec_size; |
| DECLARE_BITMAP(powergates_available, TEGRA_POWERGATE_MAX); |
| |
| struct mutex powergates_lock; |
| |
| struct pinctrl_dev *pctl_dev; |
| |
| struct irq_domain *domain; |
| struct irq_chip irq; |
| |
| struct notifier_block clk_nb; |
| |
| bool core_domain_state_synced; |
| bool core_domain_registered; |
| }; |
| |
| static struct tegra_pmc *pmc = &(struct tegra_pmc) { |
| .base = NULL, |
| .suspend_mode = TEGRA_SUSPEND_NOT_READY, |
| }; |
| |
| static inline struct tegra_powergate * |
| to_powergate(struct generic_pm_domain *domain) |
| { |
| return container_of(domain, struct tegra_powergate, genpd); |
| } |
| |
| static u32 tegra_pmc_readl(struct tegra_pmc *pmc, unsigned long offset) |
| { |
| struct arm_smccc_res res; |
| |
| if (pmc->tz_only) { |
| arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_READ, offset, 0, 0, |
| 0, 0, 0, &res); |
| if (res.a0) { |
| if (pmc->dev) |
| dev_warn(pmc->dev, "%s(): SMC failed: %lu\n", |
| __func__, res.a0); |
| else |
| pr_warn("%s(): SMC failed: %lu\n", __func__, |
| res.a0); |
| } |
| |
| return res.a1; |
| } |
| |
| return readl(pmc->base + offset); |
| } |
| |
| static void tegra_pmc_writel(struct tegra_pmc *pmc, u32 value, |
| unsigned long offset) |
| { |
| struct arm_smccc_res res; |
| |
| if (pmc->tz_only) { |
| arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_WRITE, offset, |
| value, 0, 0, 0, 0, &res); |
| if (res.a0) { |
| if (pmc->dev) |
| dev_warn(pmc->dev, "%s(): SMC failed: %lu\n", |
| __func__, res.a0); |
| else |
| pr_warn("%s(): SMC failed: %lu\n", __func__, |
| res.a0); |
| } |
| } else { |
| writel(value, pmc->base + offset); |
| } |
| } |
| |
| static u32 tegra_pmc_scratch_readl(struct tegra_pmc *pmc, unsigned long offset) |
| { |
| if (pmc->tz_only) |
| return tegra_pmc_readl(pmc, offset); |
| |
| return readl(pmc->scratch + offset); |
| } |
| |
| static void tegra_pmc_scratch_writel(struct tegra_pmc *pmc, u32 value, |
| unsigned long offset) |
| { |
| if (pmc->tz_only) |
| tegra_pmc_writel(pmc, value, offset); |
| else |
| writel(value, pmc->scratch + offset); |
| } |
| |
| /* |
| * TODO Figure out a way to call this with the struct tegra_pmc * passed in. |
| * This currently doesn't work because readx_poll_timeout() can only operate |
| * on functions that take a single argument. |
| */ |
| static inline bool tegra_powergate_state(int id) |
| { |
| if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps) |
| return (tegra_pmc_readl(pmc, GPU_RG_CNTRL) & 0x1) == 0; |
| else |
| return (tegra_pmc_readl(pmc, PWRGATE_STATUS) & BIT(id)) != 0; |
| } |
| |
| static inline bool tegra_powergate_is_valid(struct tegra_pmc *pmc, int id) |
| { |
| return (pmc->soc && pmc->soc->powergates[id]); |
| } |
| |
| static inline bool tegra_powergate_is_available(struct tegra_pmc *pmc, int id) |
| { |
| return test_bit(id, pmc->powergates_available); |
| } |
| |
| static int tegra_powergate_lookup(struct tegra_pmc *pmc, const char *name) |
| { |
| unsigned int i; |
| |
| if (!pmc || !pmc->soc || !name) |
| return -EINVAL; |
| |
| for (i = 0; i < pmc->soc->num_powergates; i++) { |
| if (!tegra_powergate_is_valid(pmc, i)) |
| continue; |
| |
| if (!strcmp(name, pmc->soc->powergates[i])) |
| return i; |
| } |
| |
| return -ENODEV; |
| } |
| |
| static int tegra20_powergate_set(struct tegra_pmc *pmc, unsigned int id, |
| bool new_state) |
| { |
| unsigned int retries = 100; |
| bool status; |
| int ret; |
| |
| /* |
| * As per TRM documentation, the toggle command will be dropped by PMC |
| * if there is contention with a HW-initiated toggling (i.e. CPU core |
| * power-gated), the command should be retried in that case. |
| */ |
| do { |
| tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE); |
| |
| /* wait for PMC to execute the command */ |
| ret = readx_poll_timeout(tegra_powergate_state, id, status, |
| status == new_state, 1, 10); |
| } while (ret == -ETIMEDOUT && retries--); |
| |
| return ret; |
| } |
| |
| static inline bool tegra_powergate_toggle_ready(struct tegra_pmc *pmc) |
| { |
| return !(tegra_pmc_readl(pmc, PWRGATE_TOGGLE) & PWRGATE_TOGGLE_START); |
| } |
| |
| static int tegra114_powergate_set(struct tegra_pmc *pmc, unsigned int id, |
| bool new_state) |
| { |
| bool status; |
| int err; |
| |
| /* wait while PMC power gating is contended */ |
| err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status, |
| status == true, 1, 100); |
| if (err) |
| return err; |
| |
| tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE); |
| |
| /* wait for PMC to accept the command */ |
| err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status, |
| status == true, 1, 100); |
| if (err) |
| return err; |
| |
| /* wait for PMC to execute the command */ |
| err = readx_poll_timeout(tegra_powergate_state, id, status, |
| status == new_state, 10, 100000); |
| if (err) |
| return err; |
| |
| return 0; |
| } |
| |
| /** |
| * tegra_powergate_set() - set the state of a partition |
| * @pmc: power management controller |
| * @id: partition ID |
| * @new_state: new state of the partition |
| */ |
| static int tegra_powergate_set(struct tegra_pmc *pmc, unsigned int id, |
| bool new_state) |
| { |
| int err; |
| |
| if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps) |
| return -EINVAL; |
| |
| mutex_lock(&pmc->powergates_lock); |
| |
| if (tegra_powergate_state(id) == new_state) { |
| mutex_unlock(&pmc->powergates_lock); |
| return 0; |
| } |
| |
| err = pmc->soc->powergate_set(pmc, id, new_state); |
| |
| mutex_unlock(&pmc->powergates_lock); |
| |
| return err; |
| } |
| |
| static int __tegra_powergate_remove_clamping(struct tegra_pmc *pmc, |
| unsigned int id) |
| { |
| u32 mask; |
| |
| mutex_lock(&pmc->powergates_lock); |
| |
| /* |
| * On Tegra124 and later, the clamps for the GPU are controlled by a |
| * separate register (with different semantics). |
| */ |
| if (id == TEGRA_POWERGATE_3D) { |
| if (pmc->soc->has_gpu_clamps) { |
| tegra_pmc_writel(pmc, 0, GPU_RG_CNTRL); |
| goto out; |
| } |
| } |
| |
| /* |
| * Tegra 2 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(pmc, mask, REMOVE_CLAMPING); |
| |
| out: |
| mutex_unlock(&pmc->powergates_lock); |
| |
| return 0; |
| } |
| |
| static int tegra_powergate_prepare_clocks(struct tegra_powergate *pg) |
| { |
| unsigned long safe_rate = 100 * 1000 * 1000; |
| unsigned int i; |
| int err; |
| |
| for (i = 0; i < pg->num_clks; i++) { |
| pg->clk_rates[i] = clk_get_rate(pg->clks[i]); |
| |
| if (!pg->clk_rates[i]) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| if (pg->clk_rates[i] <= safe_rate) |
| continue; |
| |
| /* |
| * We don't know whether voltage state is okay for the |
| * current clock rate, hence it's better to temporally |
| * switch clock to a safe rate which is suitable for |
| * all voltages, before enabling the clock. |
| */ |
| err = clk_set_rate(pg->clks[i], safe_rate); |
| if (err) |
| goto out; |
| } |
| |
| return 0; |
| |
| out: |
| while (i--) |
| clk_set_rate(pg->clks[i], pg->clk_rates[i]); |
| |
| return err; |
| } |
| |
| static int tegra_powergate_unprepare_clocks(struct tegra_powergate *pg) |
| { |
| unsigned int i; |
| int err; |
| |
| for (i = 0; i < pg->num_clks; i++) { |
| err = clk_set_rate(pg->clks[i], pg->clk_rates[i]); |
| if (err) |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static void tegra_powergate_disable_clocks(struct tegra_powergate *pg) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < pg->num_clks; i++) |
| clk_disable_unprepare(pg->clks[i]); |
| } |
| |
| static int tegra_powergate_enable_clocks(struct tegra_powergate *pg) |
| { |
| unsigned int i; |
| int err; |
| |
| for (i = 0; i < pg->num_clks; i++) { |
| err = clk_prepare_enable(pg->clks[i]); |
| if (err) |
| goto out; |
| } |
| |
| return 0; |
| |
| out: |
| while (i--) |
| clk_disable_unprepare(pg->clks[i]); |
| |
| return err; |
| } |
| |
| static int tegra_powergate_power_up(struct tegra_powergate *pg, |
| bool disable_clocks) |
| { |
| int err; |
| |
| err = reset_control_assert(pg->reset); |
| if (err) |
| return err; |
| |
| usleep_range(10, 20); |
| |
| err = tegra_powergate_set(pg->pmc, pg->id, true); |
| if (err < 0) |
| return err; |
| |
| usleep_range(10, 20); |
| |
| err = tegra_powergate_prepare_clocks(pg); |
| if (err) |
| goto powergate_off; |
| |
| err = tegra_powergate_enable_clocks(pg); |
| if (err) |
| goto unprepare_clks; |
| |
| usleep_range(10, 20); |
| |
| err = __tegra_powergate_remove_clamping(pg->pmc, pg->id); |
| if (err) |
| goto disable_clks; |
| |
| usleep_range(10, 20); |
| |
| err = reset_control_deassert(pg->reset); |
| if (err) |
| goto disable_clks; |
| |
| usleep_range(10, 20); |
| |
| if (pg->pmc->soc->needs_mbist_war) |
| err = tegra210_clk_handle_mbist_war(pg->id); |
| if (err) |
| goto disable_clks; |
| |
| if (disable_clocks) |
| tegra_powergate_disable_clocks(pg); |
| |
| err = tegra_powergate_unprepare_clocks(pg); |
| if (err) |
| return err; |
| |
| return 0; |
| |
| disable_clks: |
| tegra_powergate_disable_clocks(pg); |
| usleep_range(10, 20); |
| |
| unprepare_clks: |
| tegra_powergate_unprepare_clocks(pg); |
| |
| powergate_off: |
| tegra_powergate_set(pg->pmc, pg->id, false); |
| |
| return err; |
| } |
| |
| static int tegra_powergate_power_down(struct tegra_powergate *pg) |
| { |
| int err; |
| |
| err = tegra_powergate_prepare_clocks(pg); |
| if (err) |
| return err; |
| |
| err = tegra_powergate_enable_clocks(pg); |
| if (err) |
| goto unprepare_clks; |
| |
| usleep_range(10, 20); |
| |
| err = reset_control_assert(pg->reset); |
| if (err) |
| goto disable_clks; |
| |
| usleep_range(10, 20); |
| |
| tegra_powergate_disable_clocks(pg); |
| |
| usleep_range(10, 20); |
| |
| err = tegra_powergate_set(pg->pmc, pg->id, false); |
| if (err) |
| goto assert_resets; |
| |
| err = tegra_powergate_unprepare_clocks(pg); |
| if (err) |
| return err; |
| |
| return 0; |
| |
| assert_resets: |
| tegra_powergate_enable_clocks(pg); |
| usleep_range(10, 20); |
| reset_control_deassert(pg->reset); |
| usleep_range(10, 20); |
| |
| disable_clks: |
| tegra_powergate_disable_clocks(pg); |
| |
| unprepare_clks: |
| tegra_powergate_unprepare_clocks(pg); |
| |
| return err; |
| } |
| |
| static int tegra_genpd_power_on(struct generic_pm_domain *domain) |
| { |
| struct tegra_powergate *pg = to_powergate(domain); |
| struct device *dev = pg->pmc->dev; |
| int err; |
| |
| err = tegra_powergate_power_up(pg, true); |
| if (err) { |
| dev_err(dev, "failed to turn on PM domain %s: %d\n", |
| pg->genpd.name, err); |
| goto out; |
| } |
| |
| reset_control_release(pg->reset); |
| |
| out: |
| return err; |
| } |
| |
| static int tegra_genpd_power_off(struct generic_pm_domain *domain) |
| { |
| struct tegra_powergate *pg = to_powergate(domain); |
| struct device *dev = pg->pmc->dev; |
| int err; |
| |
| err = reset_control_acquire(pg->reset); |
| if (err < 0) { |
| dev_err(dev, "failed to acquire resets for PM domain %s: %d\n", |
| pg->genpd.name, err); |
| return err; |
| } |
| |
| err = tegra_powergate_power_down(pg); |
| if (err) { |
| dev_err(dev, "failed to turn off PM domain %s: %d\n", |
| pg->genpd.name, err); |
| reset_control_release(pg->reset); |
| } |
| |
| return err; |
| } |
| |
| /** |
| * tegra_powergate_power_on() - power on partition |
| * @id: partition ID |
| */ |
| int tegra_powergate_power_on(unsigned int id) |
| { |
| if (!tegra_powergate_is_available(pmc, id)) |
| return -EINVAL; |
| |
| return tegra_powergate_set(pmc, id, true); |
| } |
| EXPORT_SYMBOL(tegra_powergate_power_on); |
| |
| /** |
| * tegra_powergate_power_off() - power off partition |
| * @id: partition ID |
| */ |
| int tegra_powergate_power_off(unsigned int id) |
| { |
| if (!tegra_powergate_is_available(pmc, id)) |
| return -EINVAL; |
| |
| return tegra_powergate_set(pmc, id, false); |
| } |
| EXPORT_SYMBOL(tegra_powergate_power_off); |
| |
| /** |
| * tegra_powergate_is_powered() - check if partition is powered |
| * @pmc: power management controller |
| * @id: partition ID |
| */ |
| static int tegra_powergate_is_powered(struct tegra_pmc *pmc, unsigned int id) |
| { |
| if (!tegra_powergate_is_valid(pmc, id)) |
| return -EINVAL; |
| |
| return tegra_powergate_state(id); |
| } |
| |
| /** |
| * tegra_powergate_remove_clamping() - remove power clamps for partition |
| * @id: partition ID |
| */ |
| int tegra_powergate_remove_clamping(unsigned int id) |
| { |
| if (!tegra_powergate_is_available(pmc, id)) |
| return -EINVAL; |
| |
| return __tegra_powergate_remove_clamping(pmc, id); |
| } |
| EXPORT_SYMBOL(tegra_powergate_remove_clamping); |
| |
| /** |
| * tegra_powergate_sequence_power_up() - power up partition |
| * @id: partition ID |
| * @clk: clock for partition |
| * @rst: reset for partition |
| * |
| * Must be called with clk disabled, and returns with clk enabled. |
| */ |
| int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk, |
| struct reset_control *rst) |
| { |
| struct tegra_powergate *pg; |
| int err; |
| |
| if (!tegra_powergate_is_available(pmc, id)) |
| return -EINVAL; |
| |
| pg = kzalloc(sizeof(*pg), GFP_KERNEL); |
| if (!pg) |
| return -ENOMEM; |
| |
| pg->clk_rates = kzalloc(sizeof(*pg->clk_rates), GFP_KERNEL); |
| if (!pg->clk_rates) { |
| kfree(pg->clks); |
| return -ENOMEM; |
| } |
| |
| pg->id = id; |
| pg->clks = &clk; |
| pg->num_clks = 1; |
| pg->reset = rst; |
| pg->pmc = pmc; |
| |
| err = tegra_powergate_power_up(pg, false); |
| if (err) |
| dev_err(pmc->dev, "failed to turn on partition %d: %d\n", id, |
| err); |
| |
| kfree(pg->clk_rates); |
| kfree(pg); |
| |
| return err; |
| } |
| EXPORT_SYMBOL(tegra_powergate_sequence_power_up); |
| |
| /** |
| * tegra_get_cpu_powergate_id() - convert from CPU ID to partition ID |
| * @pmc: power management controller |
| * @cpuid: CPU partition ID |
| * |
| * Returns the partition ID corresponding to the CPU partition ID or a |
| * negative error code on failure. |
| */ |
| static int tegra_get_cpu_powergate_id(struct tegra_pmc *pmc, |
| unsigned int cpuid) |
| { |
| if (pmc->soc && cpuid < pmc->soc->num_cpu_powergates) |
| return pmc->soc->cpu_powergates[cpuid]; |
| |
| return -EINVAL; |
| } |
| |
| /** |
| * tegra_pmc_cpu_is_powered() - check if CPU partition is powered |
| * @cpuid: CPU partition ID |
| */ |
| bool tegra_pmc_cpu_is_powered(unsigned int cpuid) |
| { |
| int id; |
| |
| id = tegra_get_cpu_powergate_id(pmc, cpuid); |
| if (id < 0) |
| return false; |
| |
| return tegra_powergate_is_powered(pmc, id); |
| } |
| |
| /** |
| * tegra_pmc_cpu_power_on() - power on CPU partition |
| * @cpuid: CPU partition ID |
| */ |
| int tegra_pmc_cpu_power_on(unsigned int cpuid) |
| { |
| int id; |
| |
| id = tegra_get_cpu_powergate_id(pmc, cpuid); |
| if (id < 0) |
| return id; |
| |
| return tegra_powergate_set(pmc, id, true); |
| } |
| |
| /** |
| * tegra_pmc_cpu_remove_clamping() - remove power clamps for CPU partition |
| * @cpuid: CPU partition ID |
| */ |
| int tegra_pmc_cpu_remove_clamping(unsigned int cpuid) |
| { |
| int id; |
| |
| id = tegra_get_cpu_powergate_id(pmc, cpuid); |
| if (id < 0) |
| return id; |
| |
| return tegra_powergate_remove_clamping(id); |
| } |
| |
| static void tegra_pmc_program_reboot_reason(const char *cmd) |
| { |
| u32 value; |
| |
| value = tegra_pmc_scratch_readl(pmc, pmc->soc->regs->scratch0); |
| value &= ~PMC_SCRATCH0_MODE_MASK; |
| |
| if (cmd) { |
| if (strcmp(cmd, "recovery") == 0) |
| value |= PMC_SCRATCH0_MODE_RECOVERY; |
| |
| if (strcmp(cmd, "bootloader") == 0) |
| value |= PMC_SCRATCH0_MODE_BOOTLOADER; |
| |
| if (strcmp(cmd, "forced-recovery") == 0) |
| value |= PMC_SCRATCH0_MODE_RCM; |
| } |
| |
| tegra_pmc_scratch_writel(pmc, value, pmc->soc->regs->scratch0); |
| } |
| |
| static int tegra_pmc_reboot_notify(struct notifier_block *this, |
| unsigned long action, void *data) |
| { |
| if (action == SYS_RESTART) |
| tegra_pmc_program_reboot_reason(data); |
| |
| return NOTIFY_DONE; |
| } |
| |
| static struct notifier_block tegra_pmc_reboot_notifier = { |
| .notifier_call = tegra_pmc_reboot_notify, |
| }; |
| |
| static void tegra_pmc_restart(void) |
| { |
| u32 value; |
| |
| /* reset everything but PMC_SCRATCH0 and PMC_RST_STATUS */ |
| value = tegra_pmc_readl(pmc, PMC_CNTRL); |
| value |= PMC_CNTRL_MAIN_RST; |
| tegra_pmc_writel(pmc, value, PMC_CNTRL); |
| } |
| |
| static int tegra_pmc_restart_handler(struct sys_off_data *data) |
| { |
| tegra_pmc_restart(); |
| |
| return NOTIFY_DONE; |
| } |
| |
| static int tegra_pmc_power_off_handler(struct sys_off_data *data) |
| { |
| /* |
| * Reboot Nexus 7 into special bootloader mode if USB cable is |
| * connected in order to display battery status and power off. |
| */ |
| if (of_machine_is_compatible("asus,grouper") && |
| power_supply_is_system_supplied()) { |
| const u32 go_to_charger_mode = 0xa5a55a5a; |
| |
| tegra_pmc_writel(pmc, go_to_charger_mode, PMC_SCRATCH37); |
| tegra_pmc_restart(); |
| } |
| |
| return NOTIFY_DONE; |
| } |
| |
| static int powergate_show(struct seq_file *s, void *data) |
| { |
| unsigned int i; |
| int status; |
| |
| seq_printf(s, " powergate powered\n"); |
| seq_printf(s, "------------------\n"); |
| |
| for (i = 0; i < pmc->soc->num_powergates; i++) { |
| status = tegra_powergate_is_powered(pmc, i); |
| if (status < 0) |
| continue; |
| |
| seq_printf(s, " %9s %7s\n", pmc->soc->powergates[i], |
| status ? "yes" : "no"); |
| } |
| |
| return 0; |
| } |
| |
| DEFINE_SHOW_ATTRIBUTE(powergate); |
| |
| static int tegra_powergate_debugfs_init(void) |
| { |
| pmc->debugfs = debugfs_create_file("powergate", S_IRUGO, NULL, NULL, |
| &powergate_fops); |
| if (!pmc->debugfs) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| static int tegra_powergate_of_get_clks(struct tegra_powergate *pg, |
| struct device_node *np) |
| { |
| struct clk *clk; |
| unsigned int i, count; |
| int err; |
| |
| count = of_clk_get_parent_count(np); |
| if (count == 0) |
| return -ENODEV; |
| |
| pg->clks = kcalloc(count, sizeof(clk), GFP_KERNEL); |
| if (!pg->clks) |
| return -ENOMEM; |
| |
| pg->clk_rates = kcalloc(count, sizeof(*pg->clk_rates), GFP_KERNEL); |
| if (!pg->clk_rates) { |
| kfree(pg->clks); |
| return -ENOMEM; |
| } |
| |
| for (i = 0; i < count; i++) { |
| pg->clks[i] = of_clk_get(np, i); |
| if (IS_ERR(pg->clks[i])) { |
| err = PTR_ERR(pg->clks[i]); |
| goto err; |
| } |
| } |
| |
| pg->num_clks = count; |
| |
| return 0; |
| |
| err: |
| while (i--) |
| clk_put(pg->clks[i]); |
| |
| kfree(pg->clk_rates); |
| kfree(pg->clks); |
| |
| return err; |
| } |
| |
| static int tegra_powergate_of_get_resets(struct tegra_powergate *pg, |
| struct device_node *np, bool off) |
| { |
| struct device *dev = pg->pmc->dev; |
| int err; |
| |
| pg->reset = of_reset_control_array_get_exclusive_released(np); |
| if (IS_ERR(pg->reset)) { |
| err = PTR_ERR(pg->reset); |
| dev_err(dev, "failed to get device resets: %d\n", err); |
| return err; |
| } |
| |
| err = reset_control_acquire(pg->reset); |
| if (err < 0) { |
| pr_err("failed to acquire resets: %d\n", err); |
| goto out; |
| } |
| |
| if (off) { |
| err = reset_control_assert(pg->reset); |
| } else { |
| err = reset_control_deassert(pg->reset); |
| if (err < 0) |
| goto out; |
| |
| reset_control_release(pg->reset); |
| } |
| |
| out: |
| if (err) { |
| reset_control_release(pg->reset); |
| reset_control_put(pg->reset); |
| } |
| |
| return err; |
| } |
| |
| static int tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np) |
| { |
| struct device *dev = pmc->dev; |
| struct tegra_powergate *pg; |
| int id, err = 0; |
| bool off; |
| |
| pg = kzalloc(sizeof(*pg), GFP_KERNEL); |
| if (!pg) |
| return -ENOMEM; |
| |
| id = tegra_powergate_lookup(pmc, np->name); |
| if (id < 0) { |
| dev_err(dev, "powergate lookup failed for %pOFn: %d\n", np, id); |
| err = -ENODEV; |
| goto free_mem; |
| } |
| |
| /* |
| * Clear the bit for this powergate so it cannot be managed |
| * directly via the legacy APIs for controlling powergates. |
| */ |
| clear_bit(id, pmc->powergates_available); |
| |
| pg->id = id; |
| pg->genpd.name = np->name; |
| pg->genpd.power_off = tegra_genpd_power_off; |
| pg->genpd.power_on = tegra_genpd_power_on; |
| pg->pmc = pmc; |
| |
| off = !tegra_powergate_is_powered(pmc, pg->id); |
| |
| err = tegra_powergate_of_get_clks(pg, np); |
| if (err < 0) { |
| dev_err(dev, "failed to get clocks for %pOFn: %d\n", np, err); |
| goto set_available; |
| } |
| |
| err = tegra_powergate_of_get_resets(pg, np, off); |
| if (err < 0) { |
| dev_err(dev, "failed to get resets for %pOFn: %d\n", np, err); |
| goto remove_clks; |
| } |
| |
| if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)) { |
| if (off) |
| WARN_ON(tegra_powergate_power_up(pg, true)); |
| |
| goto remove_resets; |
| } |
| |
| err = pm_genpd_init(&pg->genpd, NULL, off); |
| if (err < 0) { |
| dev_err(dev, "failed to initialise PM domain %pOFn: %d\n", np, |
| err); |
| goto remove_resets; |
| } |
| |
| err = of_genpd_add_provider_simple(np, &pg->genpd); |
| if (err < 0) { |
| dev_err(dev, "failed to add PM domain provider for %pOFn: %d\n", |
| np, err); |
| goto remove_genpd; |
| } |
| |
| dev_dbg(dev, "added PM domain %s\n", pg->genpd.name); |
| |
| return 0; |
| |
| remove_genpd: |
| pm_genpd_remove(&pg->genpd); |
| |
| remove_resets: |
| reset_control_put(pg->reset); |
| |
| remove_clks: |
| while (pg->num_clks--) |
| clk_put(pg->clks[pg->num_clks]); |
| |
| kfree(pg->clks); |
| |
| set_available: |
| set_bit(id, pmc->powergates_available); |
| |
| free_mem: |
| kfree(pg); |
| |
| return err; |
| } |
| |
| bool tegra_pmc_core_domain_state_synced(void) |
| { |
| return pmc->core_domain_state_synced; |
| } |
| |
| static int |
| tegra_pmc_core_pd_set_performance_state(struct generic_pm_domain *genpd, |
| unsigned int level) |
| { |
| struct dev_pm_opp *opp; |
| int err; |
| |
| opp = dev_pm_opp_find_level_ceil(&genpd->dev, &level); |
| if (IS_ERR(opp)) { |
| dev_err(&genpd->dev, "failed to find OPP for level %u: %pe\n", |
| level, opp); |
| return PTR_ERR(opp); |
| } |
| |
| mutex_lock(&pmc->powergates_lock); |
| err = dev_pm_opp_set_opp(pmc->dev, opp); |
| mutex_unlock(&pmc->powergates_lock); |
| |
| dev_pm_opp_put(opp); |
| |
| if (err) { |
| dev_err(&genpd->dev, "failed to set voltage to %duV: %d\n", |
| level, err); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static unsigned int |
| tegra_pmc_core_pd_opp_to_performance_state(struct generic_pm_domain *genpd, |
| struct dev_pm_opp *opp) |
| { |
| return dev_pm_opp_get_level(opp); |
| } |
| |
| static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np) |
| { |
| struct generic_pm_domain *genpd; |
| const char *rname[] = { "core", NULL}; |
| int err; |
| |
| genpd = devm_kzalloc(pmc->dev, sizeof(*genpd), GFP_KERNEL); |
| if (!genpd) |
| return -ENOMEM; |
| |
| genpd->name = "core"; |
| genpd->set_performance_state = tegra_pmc_core_pd_set_performance_state; |
| genpd->opp_to_performance_state = tegra_pmc_core_pd_opp_to_performance_state; |
| |
| err = devm_pm_opp_set_regulators(pmc->dev, rname); |
| if (err) |
| return dev_err_probe(pmc->dev, err, |
| "failed to set core OPP regulator\n"); |
| |
| err = pm_genpd_init(genpd, NULL, false); |
| if (err) { |
| dev_err(pmc->dev, "failed to init core genpd: %d\n", err); |
| return err; |
| } |
| |
| err = of_genpd_add_provider_simple(np, genpd); |
| if (err) { |
| dev_err(pmc->dev, "failed to add core genpd: %d\n", err); |
| goto remove_genpd; |
| } |
| |
| pmc->core_domain_registered = true; |
| |
| return 0; |
| |
| remove_genpd: |
| pm_genpd_remove(genpd); |
| |
| return err; |
| } |
| |
| static int tegra_powergate_init(struct tegra_pmc *pmc, |
| struct device_node *parent) |
| { |
| struct of_phandle_args child_args, parent_args; |
| struct device_node *np, *child; |
| int err = 0; |
| |
| /* |
| * Core power domain is the parent of powergate domains, hence it |
| * should be registered first. |
| */ |
| np = of_get_child_by_name(parent, "core-domain"); |
| if (np) { |
| err = tegra_pmc_core_pd_add(pmc, np); |
| of_node_put(np); |
| if (err) |
| return err; |
| } |
| |
| np = of_get_child_by_name(parent, "powergates"); |
| if (!np) |
| return 0; |
| |
| for_each_child_of_node(np, child) { |
| err = tegra_powergate_add(pmc, child); |
| if (err < 0) { |
| of_node_put(child); |
| break; |
| } |
| |
| if (of_parse_phandle_with_args(child, "power-domains", |
| "#power-domain-cells", |
| 0, &parent_args)) |
| continue; |
| |
| child_args.np = child; |
| child_args.args_count = 0; |
| |
| err = of_genpd_add_subdomain(&parent_args, &child_args); |
| of_node_put(parent_args.np); |
| if (err) { |
| of_node_put(child); |
| break; |
| } |
| } |
| |
| of_node_put(np); |
| |
| return err; |
| } |
| |
| static void tegra_powergate_remove(struct generic_pm_domain *genpd) |
| { |
| struct tegra_powergate *pg = to_powergate(genpd); |
| |
| reset_control_put(pg->reset); |
| |
| while (pg->num_clks--) |
| clk_put(pg->clks[pg->num_clks]); |
| |
| kfree(pg->clks); |
| |
| set_bit(pg->id, pmc->powergates_available); |
| |
| kfree(pg); |
| } |
| |
| static void tegra_powergate_remove_all(struct device_node *parent) |
| { |
| struct generic_pm_domain *genpd; |
| struct device_node *np, *child; |
| |
| np = of_get_child_by_name(parent, "powergates"); |
| if (!np) |
| return; |
| |
| for_each_child_of_node(np, child) { |
| of_genpd_del_provider(child); |
| |
| genpd = of_genpd_remove_last(child); |
| if (IS_ERR(genpd)) |
| continue; |
| |
| tegra_powergate_remove(genpd); |
| } |
| |
| of_node_put(np); |
| |
| np = of_get_child_by_name(parent, "core-domain"); |
| if (np) { |
| of_genpd_del_provider(np); |
| of_genpd_remove_last(np); |
| } |
| } |
| |
| static const struct tegra_io_pad_soc * |
| tegra_io_pad_find(struct tegra_pmc *pmc, enum tegra_io_pad id) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < pmc->soc->num_io_pads; i++) |
| if (pmc->soc->io_pads[i].id == id) |
| return &pmc->soc->io_pads[i]; |
| |
| return NULL; |
| } |
| |
| static int tegra_io_pad_get_dpd_register_bit(struct tegra_pmc *pmc, |
| enum tegra_io_pad id, |
| unsigned long *request, |
| unsigned long *status, |
| u32 *mask) |
| { |
| const struct tegra_io_pad_soc *pad; |
| |
| pad = tegra_io_pad_find(pmc, id); |
| if (!pad) { |
| dev_err(pmc->dev, "invalid I/O pad ID %u\n", id); |
| return -ENOENT; |
| } |
| |
| if (pad->dpd == UINT_MAX) |
| return -ENOTSUPP; |
| |
| *mask = BIT(pad->dpd % 32); |
| |
| if (pad->dpd < 32) { |
| *status = pmc->soc->regs->dpd_status; |
| *request = pmc->soc->regs->dpd_req; |
| } else { |
| *status = pmc->soc->regs->dpd2_status; |
| *request = pmc->soc->regs->dpd2_req; |
| } |
| |
| return 0; |
| } |
| |
| static int tegra_io_pad_prepare(struct tegra_pmc *pmc, enum tegra_io_pad id, |
| unsigned long *request, unsigned long *status, |
| u32 *mask) |
| { |
| unsigned long rate, value; |
| int err; |
| |
| err = tegra_io_pad_get_dpd_register_bit(pmc, id, request, status, mask); |
| if (err) |
| return err; |
| |
| if (pmc->clk) { |
| rate = pmc->rate; |
| if (!rate) { |
| dev_err(pmc->dev, "failed to get clock rate\n"); |
| return -ENODEV; |
| } |
| |
| tegra_pmc_writel(pmc, DPD_SAMPLE_ENABLE, DPD_SAMPLE); |
| |
| /* must be at least 200 ns, in APB (PCLK) clock cycles */ |
| value = DIV_ROUND_UP(1000000000, rate); |
| value = DIV_ROUND_UP(200, value); |
| tegra_pmc_writel(pmc, value, SEL_DPD_TIM); |
| } |
| |
| return 0; |
| } |
| |
| static int tegra_io_pad_poll(struct tegra_pmc *pmc, unsigned long offset, |
| u32 mask, u32 val, unsigned long timeout) |
| { |
| u32 value; |
| |
| timeout = jiffies + msecs_to_jiffies(timeout); |
| |
| while (time_after(timeout, jiffies)) { |
| value = tegra_pmc_readl(pmc, offset); |
| if ((value & mask) == val) |
| return 0; |
| |
| usleep_range(250, 1000); |
| } |
| |
| return -ETIMEDOUT; |
| } |
| |
| static void tegra_io_pad_unprepare(struct tegra_pmc *pmc) |
| { |
| if (pmc->clk) |
| tegra_pmc_writel(pmc, DPD_SAMPLE_DISABLE, DPD_SAMPLE); |
| } |
| |
| /** |
| * tegra_io_pad_power_enable() - enable power to I/O pad |
| * @id: Tegra I/O pad ID for which to enable power |
| * |
| * Returns: 0 on success or a negative error code on failure. |
| */ |
| int tegra_io_pad_power_enable(enum tegra_io_pad id) |
| { |
| unsigned long request, status; |
| u32 mask; |
| int err; |
| |
| mutex_lock(&pmc->powergates_lock); |
| |
| err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask); |
| if (err < 0) { |
| dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err); |
| goto unlock; |
| } |
| |
| tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_OFF | mask, request); |
| |
| err = tegra_io_pad_poll(pmc, status, mask, 0, 250); |
| if (err < 0) { |
| dev_err(pmc->dev, "failed to enable I/O pad: %d\n", err); |
| goto unlock; |
| } |
| |
| tegra_io_pad_unprepare(pmc); |
| |
| unlock: |
| mutex_unlock(&pmc->powergates_lock); |
| return err; |
| } |
| EXPORT_SYMBOL(tegra_io_pad_power_enable); |
| |
| /** |
| * tegra_io_pad_power_disable() - disable power to I/O pad |
| * @id: Tegra I/O pad ID for which to disable power |
| * |
| * Returns: 0 on success or a negative error code on failure. |
| */ |
| int tegra_io_pad_power_disable(enum tegra_io_pad id) |
| { |
| unsigned long request, status; |
| u32 mask; |
| int err; |
| |
| mutex_lock(&pmc->powergates_lock); |
| |
| err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask); |
| if (err < 0) { |
| dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err); |
| goto unlock; |
| } |
| |
| tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_ON | mask, request); |
| |
| err = tegra_io_pad_poll(pmc, status, mask, mask, 250); |
| if (err < 0) { |
| dev_err(pmc->dev, "failed to disable I/O pad: %d\n", err); |
| goto unlock; |
| } |
| |
| tegra_io_pad_unprepare(pmc); |
| |
| unlock: |
| mutex_unlock(&pmc->powergates_lock); |
| return err; |
| } |
| EXPORT_SYMBOL(tegra_io_pad_power_disable); |
| |
| static int tegra_io_pad_is_powered(struct tegra_pmc *pmc, enum tegra_io_pad id) |
| { |
| unsigned long request, status; |
| u32 mask, value; |
| int err; |
| |
| err = tegra_io_pad_get_dpd_register_bit(pmc, id, &request, &status, |
| &mask); |
| if (err) |
| return err; |
| |
| value = tegra_pmc_readl(pmc, status); |
| |
| return !(value & mask); |
| } |
| |
| static int tegra_io_pad_set_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id, |
| int voltage) |
| { |
| const struct tegra_io_pad_soc *pad; |
| u32 value; |
| |
| pad = tegra_io_pad_find(pmc, id); |
| if (!pad) |
| return -ENOENT; |
| |
| if (pad->voltage == UINT_MAX) |
| return -ENOTSUPP; |
| |
| mutex_lock(&pmc->powergates_lock); |
| |
| if (pmc->soc->has_impl_33v_pwr) { |
| value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR); |
| |
| if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8) |
| value &= ~BIT(pad->voltage); |
| else |
| value |= BIT(pad->voltage); |
| |
| tegra_pmc_writel(pmc, value, PMC_IMPL_E_33V_PWR); |
| } else { |
| /* write-enable PMC_PWR_DET_VALUE[pad->voltage] */ |
| value = tegra_pmc_readl(pmc, PMC_PWR_DET); |
| value |= BIT(pad->voltage); |
| tegra_pmc_writel(pmc, value, PMC_PWR_DET); |
| |
| /* update I/O voltage */ |
| value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE); |
| |
| if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8) |
| value &= ~BIT(pad->voltage); |
| else |
| value |= BIT(pad->voltage); |
| |
| tegra_pmc_writel(pmc, value, PMC_PWR_DET_VALUE); |
| } |
| |
| mutex_unlock(&pmc->powergates_lock); |
| |
| usleep_range(100, 250); |
| |
| return 0; |
| } |
| |
| static int tegra_io_pad_get_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id) |
| { |
| const struct tegra_io_pad_soc *pad; |
| u32 value; |
| |
| pad = tegra_io_pad_find(pmc, id); |
| if (!pad) |
| return -ENOENT; |
| |
| if (pad->voltage == UINT_MAX) |
| return -ENOTSUPP; |
| |
| if (pmc->soc->has_impl_33v_pwr) |
| value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR); |
| else |
| value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE); |
| |
| if ((value & BIT(pad->voltage)) == 0) |
| return TEGRA_IO_PAD_VOLTAGE_1V8; |
| |
| return TEGRA_IO_PAD_VOLTAGE_3V3; |
| } |
| |
| /** |
| * tegra_io_rail_power_on() - enable power to I/O rail |
| * @id: Tegra I/O pad ID for which to enable power |
| * |
| * See also: tegra_io_pad_power_enable() |
| */ |
| int tegra_io_rail_power_on(unsigned int id) |
| { |
| return tegra_io_pad_power_enable(id); |
| } |
| EXPORT_SYMBOL(tegra_io_rail_power_on); |
| |
| /** |
| * tegra_io_rail_power_off() - disable power to I/O rail |
| * @id: Tegra I/O pad ID for which to disable power |
| * |
| * See also: tegra_io_pad_power_disable() |
| */ |
| int tegra_io_rail_power_off(unsigned int id) |
| { |
| return tegra_io_pad_power_disable(id); |
| } |
| EXPORT_SYMBOL(tegra_io_rail_power_off); |
| |
| #ifdef CONFIG_PM_SLEEP |
| enum tegra_suspend_mode tegra_pmc_get_suspend_mode(void) |
| { |
| return pmc->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->suspend_mode = mode; |
| } |
| |
| void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode) |
| { |
| unsigned long long rate = 0; |
| u64 ticks; |
| u32 value; |
| |
| switch (mode) { |
| case TEGRA_SUSPEND_LP1: |
| rate = 32768; |
| break; |
| |
| case TEGRA_SUSPEND_LP2: |
| rate = pmc->rate; |
| break; |
| |
| default: |
| break; |
| } |
| |
| if (WARN_ON_ONCE(rate == 0)) |
| rate = 100000000; |
| |
| ticks = pmc->cpu_good_time * rate + USEC_PER_SEC - 1; |
| do_div(ticks, USEC_PER_SEC); |
| tegra_pmc_writel(pmc, ticks, PMC_CPUPWRGOOD_TIMER); |
| |
| ticks = pmc->cpu_off_time * rate + USEC_PER_SEC - 1; |
| do_div(ticks, USEC_PER_SEC); |
| tegra_pmc_writel(pmc, ticks, PMC_CPUPWROFF_TIMER); |
| |
| value = tegra_pmc_readl(pmc, PMC_CNTRL); |
| value &= ~PMC_CNTRL_SIDE_EFFECT_LP0; |
| value |= PMC_CNTRL_CPU_PWRREQ_OE; |
| tegra_pmc_writel(pmc, value, PMC_CNTRL); |
| } |
| #endif |
| |
| static int tegra_pmc_parse_dt(struct tegra_pmc *pmc, struct device_node *np) |
| { |
| u32 value, values[2]; |
| |
| if (of_property_read_u32(np, "nvidia,suspend-mode", &value)) { |
| pmc->suspend_mode = TEGRA_SUSPEND_NONE; |
| } else { |
| switch (value) { |
| case 0: |
| pmc->suspend_mode = TEGRA_SUSPEND_LP0; |
| break; |
| |
| case 1: |
| pmc->suspend_mode = TEGRA_SUSPEND_LP1; |
| break; |
| |
| case 2: |
| pmc->suspend_mode = TEGRA_SUSPEND_LP2; |
| break; |
| |
| default: |
| pmc->suspend_mode = TEGRA_SUSPEND_NONE; |
| break; |
| } |
| } |
| |
| pmc->suspend_mode = tegra_pm_validate_suspend_mode(pmc->suspend_mode); |
| |
| if (of_property_read_u32(np, "nvidia,cpu-pwr-good-time", &value)) |
| pmc->suspend_mode = TEGRA_SUSPEND_NONE; |
| |
| pmc->cpu_good_time = value; |
| |
| if (of_property_read_u32(np, "nvidia,cpu-pwr-off-time", &value)) |
| pmc->suspend_mode = TEGRA_SUSPEND_NONE; |
| |
| pmc->cpu_off_time = value; |
| |
| if (of_property_read_u32_array(np, "nvidia,core-pwr-good-time", |
| values, ARRAY_SIZE(values))) |
| pmc->suspend_mode = TEGRA_SUSPEND_NONE; |
| |
| pmc->core_osc_time = values[0]; |
| pmc->core_pmu_time = values[1]; |
| |
| if (of_property_read_u32(np, "nvidia,core-pwr-off-time", &value)) |
| pmc->suspend_mode = TEGRA_SUSPEND_NONE; |
| |
| pmc->core_off_time = value; |
| |
| pmc->corereq_high = of_property_read_bool(np, |
| "nvidia,core-power-req-active-high"); |
| |
| pmc->sysclkreq_high = of_property_read_bool(np, |
| "nvidia,sys-clock-req-active-high"); |
| |
| pmc->combined_req = of_property_read_bool(np, |
| "nvidia,combined-power-req"); |
| |
| pmc->cpu_pwr_good_en = of_property_read_bool(np, |
| "nvidia,cpu-pwr-good-en"); |
| |
| if (of_property_read_u32_array(np, "nvidia,lp0-vec", values, |
| ARRAY_SIZE(values))) |
| if (pmc->suspend_mode == TEGRA_SUSPEND_LP0) |
| pmc->suspend_mode = TEGRA_SUSPEND_LP1; |
| |
| pmc->lp0_vec_phys = values[0]; |
| pmc->lp0_vec_size = values[1]; |
| |
| return 0; |
| } |
| |
| static void tegra_pmc_init(struct tegra_pmc *pmc) |
| { |
| if (pmc->soc->init) |
| pmc->soc->init(pmc); |
| } |
| |
| static void tegra_pmc_init_tsense_reset(struct tegra_pmc *pmc) |
| { |
| static const char disabled[] = "emergency thermal reset disabled"; |
| u32 pmu_addr, ctrl_id, reg_addr, reg_data, pinmux; |
| struct device *dev = pmc->dev; |
| struct device_node *np; |
| u32 value, checksum; |
| |
| if (!pmc->soc->has_tsense_reset) |
| return; |
| |
| np = of_get_child_by_name(pmc->dev->of_node, "i2c-thermtrip"); |
| if (!np) { |
| dev_warn(dev, "i2c-thermtrip node not found, %s.\n", disabled); |
| return; |
| } |
| |
| if (of_property_read_u32(np, "nvidia,i2c-controller-id", &ctrl_id)) { |
| dev_err(dev, "I2C controller ID missing, %s.\n", disabled); |
| goto out; |
| } |
| |
| if (of_property_read_u32(np, "nvidia,bus-addr", &pmu_addr)) { |
| dev_err(dev, "nvidia,bus-addr missing, %s.\n", disabled); |
| goto out; |
| } |
| |
| if (of_property_read_u32(np, "nvidia,reg-addr", ®_addr)) { |
| dev_err(dev, "nvidia,reg-addr missing, %s.\n", disabled); |
| goto out; |
| } |
| |
| if (of_property_read_u32(np, "nvidia,reg-data", ®_data)) { |
| dev_err(dev, "nvidia,reg-data missing, %s.\n", disabled); |
| goto out; |
| } |
| |
| if (of_property_read_u32(np, "nvidia,pinmux-id", &pinmux)) |
| pinmux = 0; |
| |
| value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL); |
| value |= PMC_SENSOR_CTRL_SCRATCH_WRITE; |
| tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL); |
| |
| value = (reg_data << PMC_SCRATCH54_DATA_SHIFT) | |
| (reg_addr << PMC_SCRATCH54_ADDR_SHIFT); |
| tegra_pmc_writel(pmc, value, PMC_SCRATCH54); |
| |
| value = PMC_SCRATCH55_RESET_TEGRA; |
| value |= ctrl_id << PMC_SCRATCH55_CNTRL_ID_SHIFT; |
| value |= pinmux << PMC_SCRATCH55_PINMUX_SHIFT; |
| value |= pmu_addr << PMC_SCRATCH55_I2CSLV1_SHIFT; |
| |
| /* |
| * Calculate checksum of SCRATCH54, SCRATCH55 fields. Bits 23:16 will |
| * contain the checksum and are currently zero, so they are not added. |
| */ |
| checksum = reg_addr + reg_data + (value & 0xff) + ((value >> 8) & 0xff) |
| + ((value >> 24) & 0xff); |
| checksum &= 0xff; |
| checksum = 0x100 - checksum; |
| |
| value |= checksum << PMC_SCRATCH55_CHECKSUM_SHIFT; |
| |
| tegra_pmc_writel(pmc, value, PMC_SCRATCH55); |
| |
| value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL); |
| value |= PMC_SENSOR_CTRL_ENABLE_RST; |
| tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL); |
| |
| dev_info(pmc->dev, "emergency thermal reset enabled\n"); |
| |
| out: |
| of_node_put(np); |
| } |
| |
| static int tegra_io_pad_pinctrl_get_groups_count(struct pinctrl_dev *pctl_dev) |
| { |
| struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev); |
| |
| return pmc->soc->num_io_pads; |
| } |
| |
| static const char *tegra_io_pad_pinctrl_get_group_name(struct pinctrl_dev *pctl, |
| unsigned int group) |
| { |
| struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl); |
| |
| return pmc->soc->io_pads[group].name; |
| } |
| |
| static int tegra_io_pad_pinctrl_get_group_pins(struct pinctrl_dev *pctl_dev, |
| unsigned int group, |
| const unsigned int **pins, |
| unsigned int *num_pins) |
| { |
| struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev); |
| |
| *pins = &pmc->soc->io_pads[group].id; |
| *num_pins = 1; |
| |
| return 0; |
| } |
| |
| static const struct pinctrl_ops tegra_io_pad_pinctrl_ops = { |
| .get_groups_count = tegra_io_pad_pinctrl_get_groups_count, |
| .get_group_name = tegra_io_pad_pinctrl_get_group_name, |
| .get_group_pins = tegra_io_pad_pinctrl_get_group_pins, |
| .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, |
| .dt_free_map = pinconf_generic_dt_free_map, |
| }; |
| |
| static int tegra_io_pad_pinconf_get(struct pinctrl_dev *pctl_dev, |
| unsigned int pin, unsigned long *config) |
| { |
| enum pin_config_param param = pinconf_to_config_param(*config); |
| struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev); |
| const struct tegra_io_pad_soc *pad; |
| int ret; |
| u32 arg; |
| |
| pad = tegra_io_pad_find(pmc, pin); |
| if (!pad) |
| return -EINVAL; |
| |
| switch (param) { |
| case PIN_CONFIG_POWER_SOURCE: |
| ret = tegra_io_pad_get_voltage(pmc, pad->id); |
| if (ret < 0) |
| return ret; |
| |
| arg = ret; |
| break; |
| |
| case PIN_CONFIG_MODE_LOW_POWER: |
| ret = tegra_io_pad_is_powered(pmc, pad->id); |
| if (ret < 0) |
| return ret; |
| |
| arg = !ret; |
| break; |
| |
| default: |
| return -EINVAL; |
| } |
| |
| *config = pinconf_to_config_packed(param, arg); |
| |
| return 0; |
| } |
| |
| static int tegra_io_pad_pinconf_set(struct pinctrl_dev *pctl_dev, |
| unsigned int pin, unsigned long *configs, |
| unsigned int num_configs) |
| { |
| struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev); |
| const struct tegra_io_pad_soc *pad; |
| enum pin_config_param param; |
| unsigned int i; |
| int err; |
| u32 arg; |
| |
| pad = tegra_io_pad_find(pmc, pin); |
| if (!pad) |
| return -EINVAL; |
| |
| for (i = 0; i < num_configs; ++i) { |
| param = pinconf_to_config_param(configs[i]); |
| arg = pinconf_to_config_argument(configs[i]); |
| |
| switch (param) { |
| case PIN_CONFIG_MODE_LOW_POWER: |
| if (arg) |
| err = tegra_io_pad_power_disable(pad->id); |
| else |
| err = tegra_io_pad_power_enable(pad->id); |
| if (err) |
| return err; |
| break; |
| case PIN_CONFIG_POWER_SOURCE: |
| if (arg != TEGRA_IO_PAD_VOLTAGE_1V8 && |
| arg != TEGRA_IO_PAD_VOLTAGE_3V3) |
| return -EINVAL; |
| err = tegra_io_pad_set_voltage(pmc, pad->id, arg); |
| if (err) |
| return err; |
| break; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static const struct pinconf_ops tegra_io_pad_pinconf_ops = { |
| .pin_config_get = tegra_io_pad_pinconf_get, |
| .pin_config_set = tegra_io_pad_pinconf_set, |
| .is_generic = true, |
| }; |
| |
| static struct pinctrl_desc tegra_pmc_pctl_desc = { |
| .pctlops = &tegra_io_pad_pinctrl_ops, |
| .confops = &tegra_io_pad_pinconf_ops, |
| }; |
| |
| static int tegra_pmc_pinctrl_init(struct tegra_pmc *pmc) |
| { |
| int err; |
| |
| if (!pmc->soc->num_pin_descs) |
| return 0; |
| |
| tegra_pmc_pctl_desc.name = dev_name(pmc->dev); |
| tegra_pmc_pctl_desc.pins = pmc->soc->pin_descs; |
| tegra_pmc_pctl_desc.npins = pmc->soc->num_pin_descs; |
| |
| pmc->pctl_dev = devm_pinctrl_register(pmc->dev, &tegra_pmc_pctl_desc, |
| pmc); |
| if (IS_ERR(pmc->pctl_dev)) { |
| err = PTR_ERR(pmc->pctl_dev); |
| dev_err(pmc->dev, "failed to register pin controller: %d\n", |
| err); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static ssize_t reset_reason_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| u32 value; |
| |
| value = tegra_pmc_readl(pmc, pmc->soc->regs->rst_status); |
| value &= pmc->soc->regs->rst_source_mask; |
| value >>= pmc->soc->regs->rst_source_shift; |
| |
| if (WARN_ON(value >= pmc->soc->num_reset_sources)) |
| return sprintf(buf, "%s\n", "UNKNOWN"); |
| |
| return sprintf(buf, "%s\n", pmc->soc->reset_sources[value]); |
| } |
| |
| static DEVICE_ATTR_RO(reset_reason); |
| |
| static ssize_t reset_level_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| u32 value; |
| |
| value = tegra_pmc_readl(pmc, pmc->soc->regs->rst_status); |
| value &= pmc->soc->regs->rst_level_mask; |
| value >>= pmc->soc->regs->rst_level_shift; |
| |
| if (WARN_ON(value >= pmc->soc->num_reset_levels)) |
| return sprintf(buf, "%s\n", "UNKNOWN"); |
| |
| return sprintf(buf, "%s\n", pmc->soc->reset_levels[value]); |
| } |
| |
| static DEVICE_ATTR_RO(reset_level); |
| |
| static void tegra_pmc_reset_sysfs_init(struct tegra_pmc *pmc) |
| { |
| struct device *dev = pmc->dev; |
| int err = 0; |
| |
| if (pmc->soc->reset_sources) { |
| err = device_create_file(dev, &dev_attr_reset_reason); |
| if (err < 0) |
| dev_warn(dev, |
| "failed to create attr \"reset_reason\": %d\n", |
| err); |
| } |
| |
| if (pmc->soc->reset_levels) { |
| err = device_create_file(dev, &dev_attr_reset_level); |
| if (err < 0) |
| dev_warn(dev, |
| "failed to create attr \"reset_level\": %d\n", |
| err); |
| } |
| } |
| |
| static int tegra_pmc_irq_translate(struct irq_domain *domain, |
| struct irq_fwspec *fwspec, |
| unsigned long *hwirq, |
| unsigned int *type) |
| { |
| if (WARN_ON(fwspec->param_count < 2)) |
| return -EINVAL; |
| |
| *hwirq = fwspec->param[0]; |
| *type = fwspec->param[1]; |
| |
| return 0; |
| } |
| |
| static int tegra_pmc_irq_alloc(struct irq_domain *domain, unsigned int virq, |
| unsigned int num_irqs, void *data) |
| { |
| struct tegra_pmc *pmc = domain->host_data; |
| const struct tegra_pmc_soc *soc = pmc->soc; |
| struct irq_fwspec *fwspec = data; |
| unsigned int i; |
| int err = 0; |
| |
| if (WARN_ON(num_irqs > 1)) |
| return -EINVAL; |
| |
| for (i = 0; i < soc->num_wake_events; i++) { |
| const struct tegra_wake_event *event = &soc->wake_events[i]; |
| |
| /* IRQ and simple wake events */ |
| if (fwspec->param_count == 2) { |
| struct irq_fwspec spec; |
| |
| if (event->id != fwspec->param[0]) |
| continue; |
| |
| err = irq_domain_set_hwirq_and_chip(domain, virq, |
| event->id, |
| &pmc->irq, pmc); |
| if (err < 0) |
| break; |
| |
| /* simple hierarchies stop at the PMC level */ |
| if (event->irq == 0) { |
| err = irq_domain_disconnect_hierarchy(domain->parent, virq); |
| break; |
| } |
| |
| spec.fwnode = &pmc->dev->of_node->fwnode; |
| spec.param_count = 3; |
| spec.param[0] = GIC_SPI; |
| spec.param[1] = event->irq; |
| spec.param[2] = fwspec->param[1]; |
| |
| err = irq_domain_alloc_irqs_parent(domain, virq, |
| num_irqs, &spec); |
| |
| break; |
| } |
| |
| /* GPIO wake events */ |
| if (fwspec->param_count == 3) { |
| if (event->gpio.instance != fwspec->param[0] || |
| event->gpio.pin != fwspec->param[1]) |
| continue; |
| |
| err = irq_domain_set_hwirq_and_chip(domain, virq, |
| event->id, |
| &pmc->irq, pmc); |
| |
| /* GPIO hierarchies stop at the PMC level */ |
| if (!err && domain->parent) |
| err = irq_domain_disconnect_hierarchy(domain->parent, |
| virq); |
| break; |
| } |
| } |
| |
| /* If there is no wake-up event, there is no PMC mapping */ |
| if (i == soc->num_wake_events) |
| err = irq_domain_disconnect_hierarchy(domain, virq); |
| |
| return err; |
| } |
| |
| static const struct irq_domain_ops tegra_pmc_irq_domain_ops = { |
| .translate = tegra_pmc_irq_translate, |
| .alloc = tegra_pmc_irq_alloc, |
| }; |
| |
| static int tegra210_pmc_irq_set_wake(struct irq_data *data, unsigned int on) |
| { |
| struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); |
| unsigned int offset, bit; |
| u32 value; |
| |
| offset = data->hwirq / 32; |
| bit = data->hwirq % 32; |
| |
| /* clear wake status */ |
| tegra_pmc_writel(pmc, 0, PMC_SW_WAKE_STATUS); |
| tegra_pmc_writel(pmc, 0, PMC_SW_WAKE2_STATUS); |
| |
| tegra_pmc_writel(pmc, 0, PMC_WAKE_STATUS); |
| tegra_pmc_writel(pmc, 0, PMC_WAKE2_STATUS); |
| |
| /* enable PMC wake */ |
| if (data->hwirq >= 32) |
| offset = PMC_WAKE2_MASK; |
| else |
| offset = PMC_WAKE_MASK; |
| |
| value = tegra_pmc_readl(pmc, offset); |
| |
| if (on) |
| value |= BIT(bit); |
| else |
| value &= ~BIT(bit); |
| |
| tegra_pmc_writel(pmc, value, offset); |
| |
| return 0; |
| } |
| |
| static int tegra210_pmc_irq_set_type(struct irq_data *data, unsigned int type) |
| { |
| struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); |
| unsigned int offset, bit; |
| u32 value; |
| |
| offset = data->hwirq / 32; |
| bit = data->hwirq % 32; |
| |
| if (data->hwirq >= 32) |
| offset = PMC_WAKE2_LEVEL; |
| else |
| offset = PMC_WAKE_LEVEL; |
| |
| value = tegra_pmc_readl(pmc, offset); |
| |
| switch (type) { |
| case IRQ_TYPE_EDGE_RISING: |
| case IRQ_TYPE_LEVEL_HIGH: |
| value |= BIT(bit); |
| break; |
| |
| case IRQ_TYPE_EDGE_FALLING: |
| case IRQ_TYPE_LEVEL_LOW: |
| value &= ~BIT(bit); |
| break; |
| |
| case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING: |
| value ^= BIT(bit); |
| break; |
| |
| default: |
| return -EINVAL; |
| } |
| |
| tegra_pmc_writel(pmc, value, offset); |
| |
| return 0; |
| } |
| |
| static int tegra186_pmc_irq_set_wake(struct irq_data *data, unsigned int on) |
| { |
| struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); |
| unsigned int offset, bit; |
| u32 value; |
| |
| offset = data->hwirq / 32; |
| bit = data->hwirq % 32; |
| |
| /* clear wake status */ |
| writel(0x1, pmc->wake + WAKE_AOWAKE_STATUS_W(data->hwirq)); |
| |
| /* route wake to tier 2 */ |
| value = readl(pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset)); |
| |
| if (!on) |
| value &= ~(1 << bit); |
| else |
| value |= 1 << bit; |
| |
| writel(value, pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset)); |
| |
| /* enable wakeup event */ |
| writel(!!on, pmc->wake + WAKE_AOWAKE_MASK_W(data->hwirq)); |
| |
| return 0; |
| } |
| |
| static int tegra186_pmc_irq_set_type(struct irq_data *data, unsigned int type) |
| { |
| struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); |
| u32 value; |
| |
| value = readl(pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq)); |
| |
| switch (type) { |
| case IRQ_TYPE_EDGE_RISING: |
| case IRQ_TYPE_LEVEL_HIGH: |
| value |= WAKE_AOWAKE_CNTRL_LEVEL; |
| break; |
| |
| case IRQ_TYPE_EDGE_FALLING: |
| case IRQ_TYPE_LEVEL_LOW: |
| value &= ~WAKE_AOWAKE_CNTRL_LEVEL; |
| break; |
| |
| case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING: |
| value ^= WAKE_AOWAKE_CNTRL_LEVEL; |
| break; |
| |
| default: |
| return -EINVAL; |
| } |
| |
| writel(value, pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq)); |
| |
| return 0; |
| } |
| |
| static void tegra_irq_mask_parent(struct irq_data *data) |
| { |
| if (data->parent_data) |
| irq_chip_mask_parent(data); |
| } |
| |
| static void tegra_irq_unmask_parent(struct irq_data *data) |
| { |
| if (data->parent_data) |
| irq_chip_unmask_parent(data); |
| } |
| |
| static void tegra_irq_eoi_parent(struct irq_data *data) |
| { |
| if (data->parent_data) |
| irq_chip_eoi_parent(data); |
| } |
| |
| static int tegra_irq_set_affinity_parent(struct irq_data *data, |
| const struct cpumask *dest, |
| bool force) |
| { |
| if (data->parent_data) |
| return irq_chip_set_affinity_parent(data, dest, force); |
| |
| return -EINVAL; |
| } |
| |
| static int tegra_pmc_irq_init(struct tegra_pmc *pmc) |
| { |
| struct irq_domain *parent = NULL; |
| struct device_node *np; |
| |
| np = of_irq_find_parent(pmc->dev->of_node); |
| if (np) { |
| parent = irq_find_host(np); |
| of_node_put(np); |
| } |
| |
| if (!parent) |
| return 0; |
| |
| pmc->irq.name = dev_name(pmc->dev); |
| pmc->irq.irq_mask = tegra_irq_mask_parent; |
| pmc->irq.irq_unmask = tegra_irq_unmask_parent; |
| pmc->irq.irq_eoi = tegra_irq_eoi_parent; |
| pmc->irq.irq_set_affinity = tegra_irq_set_affinity_parent; |
| pmc->irq.irq_set_type = pmc->soc->irq_set_type; |
| pmc->irq.irq_set_wake = pmc->soc->irq_set_wake; |
| |
| pmc->domain = irq_domain_add_hierarchy(parent, 0, 96, pmc->dev->of_node, |
| &tegra_pmc_irq_domain_ops, pmc); |
| if (!pmc->domain) { |
| dev_err(pmc->dev, "failed to allocate domain\n"); |
| return -ENOMEM; |
| } |
| |
| return 0; |
| } |
| |
| static int tegra_pmc_clk_notify_cb(struct notifier_block *nb, |
| unsigned long action, void *ptr) |
| { |
| struct tegra_pmc *pmc = container_of(nb, struct tegra_pmc, clk_nb); |
| struct clk_notifier_data *data = ptr; |
| |
| switch (action) { |
| case PRE_RATE_CHANGE: |
| mutex_lock(&pmc->powergates_lock); |
| break; |
| |
| case POST_RATE_CHANGE: |
| pmc->rate = data->new_rate; |
| fallthrough; |
| |
| case ABORT_RATE_CHANGE: |
| mutex_unlock(&pmc->powergates_lock); |
| break; |
| |
| default: |
| WARN_ON_ONCE(1); |
| return notifier_from_errno(-EINVAL); |
| } |
| |
| return NOTIFY_OK; |
| } |
| |
| static void pmc_clk_fence_udelay(u32 offset) |
| { |
| tegra_pmc_readl(pmc, offset); |
| /* pmc clk propagation delay 2 us */ |
| udelay(2); |
| } |
| |
| static u8 pmc_clk_mux_get_parent(struct clk_hw *hw) |
| { |
| struct pmc_clk *clk = to_pmc_clk(hw); |
| u32 val; |
| |
| val = tegra_pmc_readl(pmc, clk->offs) >> clk->mux_shift; |
| val &= PMC_CLK_OUT_MUX_MASK; |
| |
| return val; |
| } |
| |
| static int pmc_clk_mux_set_parent(struct clk_hw *hw, u8 index) |
| { |
| struct pmc_clk *clk = to_pmc_clk(hw); |
| u32 val; |
| |
| val = tegra_pmc_readl(pmc, clk->offs); |
| val &= ~(PMC_CLK_OUT_MUX_MASK << clk->mux_shift); |
| val |= index << clk->mux_shift; |
| tegra_pmc_writel(pmc, val, clk->offs); |
| pmc_clk_fence_udelay(clk->offs); |
| |
| return 0; |
| } |
| |
| static int pmc_clk_is_enabled(struct clk_hw *hw) |
| { |
| struct pmc_clk *clk = to_pmc_clk(hw); |
| u32 val; |
| |
| val = tegra_pmc_readl(pmc, clk->offs) & BIT(clk->force_en_shift); |
| |
| return val ? 1 : 0; |
| } |
| |
| static void pmc_clk_set_state(unsigned long offs, u32 shift, int state) |
| { |
| u32 val; |
| |
| val = tegra_pmc_readl(pmc, offs); |
| val = state ? (val | BIT(shift)) : (val & ~BIT(shift)); |
| tegra_pmc_writel(pmc, val, offs); |
| pmc_clk_fence_udelay(offs); |
| } |
| |
| static int pmc_clk_enable(struct clk_hw *hw) |
| { |
| struct pmc_clk *clk = to_pmc_clk(hw); |
| |
| pmc_clk_set_state(clk->offs, clk->force_en_shift, 1); |
| |
| return 0; |
| } |
| |
| static void pmc_clk_disable(struct clk_hw *hw) |
| { |
| struct pmc_clk *clk = to_pmc_clk(hw); |
| |
| pmc_clk_set_state(clk->offs, clk->force_en_shift, 0); |
| } |
| |
| static const struct clk_ops pmc_clk_ops = { |
| .get_parent = pmc_clk_mux_get_parent, |
| .set_parent = pmc_clk_mux_set_parent, |
| .determine_rate = __clk_mux_determine_rate, |
| .is_enabled = pmc_clk_is_enabled, |
| .enable = pmc_clk_enable, |
| .disable = pmc_clk_disable, |
| }; |
| |
| static struct clk * |
| tegra_pmc_clk_out_register(struct tegra_pmc *pmc, |
| const struct pmc_clk_init_data *data, |
| unsigned long offset) |
| { |
| struct clk_init_data init; |
| struct pmc_clk *pmc_clk; |
| |
| pmc_clk = devm_kzalloc(pmc->dev, sizeof(*pmc_clk), GFP_KERNEL); |
| if (!pmc_clk) |
| return ERR_PTR(-ENOMEM); |
| |
| init.name = data->name; |
| init.ops = &pmc_clk_ops; |
| init.parent_names = data->parents; |
| init.num_parents = data->num_parents; |
| init.flags = CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT | |
| CLK_SET_PARENT_GATE; |
| |
| pmc_clk->hw.init = &init; |
| pmc_clk->offs = offset; |
| pmc_clk->mux_shift = data->mux_shift; |
| pmc_clk->force_en_shift = data->force_en_shift; |
| |
| return clk_register(NULL, &pmc_clk->hw); |
| } |
| |
| static int pmc_clk_gate_is_enabled(struct clk_hw *hw) |
| { |
| struct pmc_clk_gate *gate = to_pmc_clk_gate(hw); |
| |
| return tegra_pmc_readl(pmc, gate->offs) & BIT(gate->shift) ? 1 : 0; |
| } |
| |
| static int pmc_clk_gate_enable(struct clk_hw *hw) |
| { |
| struct pmc_clk_gate *gate = to_pmc_clk_gate(hw); |
| |
| pmc_clk_set_state(gate->offs, gate->shift, 1); |
| |
| return 0; |
| } |
| |
| static void pmc_clk_gate_disable(struct clk_hw *hw) |
| { |
| struct pmc_clk_gate *gate = to_pmc_clk_gate(hw); |
| |
| pmc_clk_set_state(gate->offs, gate->shift, 0); |
| } |
| |
| static const struct clk_ops pmc_clk_gate_ops = { |
| .is_enabled = pmc_clk_gate_is_enabled, |
| .enable = pmc_clk_gate_enable, |
| .disable = pmc_clk_gate_disable, |
| }; |
| |
| static struct clk * |
| tegra_pmc_clk_gate_register(struct tegra_pmc *pmc, const char *name, |
| const char *parent_name, unsigned long offset, |
| u32 shift) |
| { |
| struct clk_init_data init; |
| struct pmc_clk_gate *gate; |
| |
| gate = devm_kzalloc(pmc->dev, sizeof(*gate), GFP_KERNEL); |
| if (!gate) |
| return ERR_PTR(-ENOMEM); |
| |
| init.name = name; |
| init.ops = &pmc_clk_gate_ops; |
| init.parent_names = &parent_name; |
| init.num_parents = 1; |
| init.flags = 0; |
| |
| gate->hw.init = &init; |
| gate->offs = offset; |
| gate->shift = shift; |
| |
| return clk_register(NULL, &gate->hw); |
| } |
| |
| static void tegra_pmc_clock_register(struct tegra_pmc *pmc, |
| struct device_node *np) |
| { |
| struct clk *clk; |
| struct clk_onecell_data *clk_data; |
| unsigned int num_clks; |
| int i, err; |
| |
| num_clks = pmc->soc->num_pmc_clks; |
| if (pmc->soc->has_blink_output) |
| num_clks += 1; |
| |
| if (!num_clks) |
| return; |
| |
| clk_data = devm_kmalloc(pmc->dev, sizeof(*clk_data), GFP_KERNEL); |
| if (!clk_data) |
| return; |
| |
| clk_data->clks = devm_kcalloc(pmc->dev, TEGRA_PMC_CLK_MAX, |
| sizeof(*clk_data->clks), GFP_KERNEL); |
| if (!clk_data->clks) |
| return; |
| |
| clk_data->clk_num = TEGRA_PMC_CLK_MAX; |
| |
| for (i = 0; i < TEGRA_PMC_CLK_MAX; i++) |
| clk_data->clks[i] = ERR_PTR(-ENOENT); |
| |
| for (i = 0; i < pmc->soc->num_pmc_clks; i++) { |
| const struct pmc_clk_init_data *data; |
| |
| data = pmc->soc->pmc_clks_data + i; |
| |
| clk = tegra_pmc_clk_out_register(pmc, data, PMC_CLK_OUT_CNTRL); |
| if (IS_ERR(clk)) { |
| dev_warn(pmc->dev, "unable to register clock %s: %d\n", |
| data->name, PTR_ERR_OR_ZERO(clk)); |
| return; |
| } |
| |
| err = clk_register_clkdev(clk, data->name, NULL); |
| if (err) { |
| dev_warn(pmc->dev, |
| "unable to register %s clock lookup: %d\n", |
| data->name, err); |
| return; |
| } |
| |
| clk_data->clks[data->clk_id] = clk; |
| } |
| |
| if (pmc->soc->has_blink_output) { |
| tegra_pmc_writel(pmc, 0x0, PMC_BLINK_TIMER); |
| clk = tegra_pmc_clk_gate_register(pmc, |
| "pmc_blink_override", |
| "clk_32k", |
| PMC_DPD_PADS_ORIDE, |
| PMC_DPD_PADS_ORIDE_BLINK); |
| if (IS_ERR(clk)) { |
| dev_warn(pmc->dev, |
| "unable to register pmc_blink_override: %d\n", |
| PTR_ERR_OR_ZERO(clk)); |
| return; |
| } |
| |
| clk = tegra_pmc_clk_gate_register(pmc, "pmc_blink", |
| "pmc_blink_override", |
| PMC_CNTRL, |
| PMC_CNTRL_BLINK_EN); |
| if (IS_ERR(clk)) { |
| dev_warn(pmc->dev, |
| "unable to register pmc_blink: %d\n", |
| PTR_ERR_OR_ZERO(clk)); |
| return; |
| } |
| |
| err = clk_register_clkdev(clk, "pmc_blink", NULL); |
| if (err) { |
| dev_warn(pmc->dev, |
| "unable to register pmc_blink lookup: %d\n", |
| err); |
| return; |
| } |
| |
| clk_data->clks[TEGRA_PMC_CLK_BLINK] = clk; |
| } |
| |
| err = of_clk_add_provider(np, of_clk_src_onecell_get, clk_data); |
| if (err) |
| dev_warn(pmc->dev, "failed to add pmc clock provider: %d\n", |
| err); |
| } |
| |
| static const struct regmap_range pmc_usb_sleepwalk_ranges[] = { |
| regmap_reg_range(PMC_USB_DEBOUNCE_DEL, PMC_USB_AO), |
| regmap_reg_range(PMC_UTMIP_UHSIC_TRIGGERS, PMC_UTMIP_UHSIC_SAVED_STATE), |
| regmap_reg_range(PMC_UTMIP_TERM_PAD_CFG, PMC_UTMIP_UHSIC_FAKE), |
| regmap_reg_range(PMC_UTMIP_UHSIC_LINE_WAKEUP, PMC_UTMIP_UHSIC_LINE_WAKEUP), |
| regmap_reg_range(PMC_UTMIP_BIAS_MASTER_CNTRL, PMC_UTMIP_MASTER_CONFIG), |
| regmap_reg_range(PMC_UTMIP_UHSIC2_TRIGGERS, PMC_UTMIP_MASTER2_CONFIG), |
| regmap_reg_range(PMC_UTMIP_PAD_CFG0, PMC_UTMIP_UHSIC_SLEEP_CFG1), |
| regmap_reg_range(PMC_UTMIP_SLEEPWALK_P3, PMC_UTMIP_SLEEPWALK_P3), |
| }; |
| |
| static const struct regmap_access_table pmc_usb_sleepwalk_table = { |
| .yes_ranges = pmc_usb_sleepwalk_ranges, |
| .n_yes_ranges = ARRAY_SIZE(pmc_usb_sleepwalk_ranges), |
| }; |
| |
| static int tegra_pmc_regmap_readl(void *context, unsigned int offset, unsigned int *value) |
| { |
| struct tegra_pmc *pmc = context; |
| |
| *value = tegra_pmc_readl(pmc, offset); |
| return 0; |
| } |
| |
| static int tegra_pmc_regmap_writel(void *context, unsigned int offset, unsigned int value) |
| { |
| struct tegra_pmc *pmc = context; |
| |
| tegra_pmc_writel(pmc, value, offset); |
| return 0; |
| } |
| |
| static const struct regmap_config usb_sleepwalk_regmap_config = { |
| .name = "usb_sleepwalk", |
| .reg_bits = 32, |
| .val_bits = 32, |
| .reg_stride = 4, |
| .fast_io = true, |
| .rd_table = &pmc_usb_sleepwalk_table, |
| .wr_table = &pmc_usb_sleepwalk_table, |
| .reg_read = tegra_pmc_regmap_readl, |
| .reg_write = tegra_pmc_regmap_writel, |
| }; |
| |
| static int tegra_pmc_regmap_init(struct tegra_pmc *pmc) |
| { |
| struct regmap *regmap; |
| int err; |
| |
| if (pmc->soc->has_usb_sleepwalk) { |
| regmap = devm_regmap_init(pmc->dev, NULL, pmc, &usb_sleepwalk_regmap_config); |
| if (IS_ERR(regmap)) { |
| err = PTR_ERR(regmap); |
| dev_err(pmc->dev, "failed to allocate register map (%d)\n", err); |
| return err; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void tegra_pmc_reset_suspend_mode(void *data) |
| { |
| pmc->suspend_mode = TEGRA_SUSPEND_NOT_READY; |
| } |
| |
| static int tegra_pmc_probe(struct platform_device *pdev) |
| { |
| void __iomem *base; |
| struct resource *res; |
| int err; |
| |
| /* |
| * Early initialisation should have configured an initial |
| * register mapping and setup the soc data pointer. If these |
| * are not valid then something went badly wrong! |
| */ |
| if (WARN_ON(!pmc->base || !pmc->soc)) |
| return -ENODEV; |
| |
| err = tegra_pmc_parse_dt(pmc, pdev->dev.of_node); |
| if (err < 0) |
| return err; |
| |
| err = devm_add_action_or_reset(&pdev->dev, tegra_pmc_reset_suspend_mode, |
| NULL); |
| if (err) |
| return err; |
| |
| /* take over the memory region from the early initialization */ |
| base = devm_platform_ioremap_resource(pdev, 0); |
| if (IS_ERR(base)) |
| return PTR_ERR(base); |
| |
| res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wake"); |
| if (res) { |
| pmc->wake = devm_ioremap_resource(&pdev->dev, res); |
| if (IS_ERR(pmc->wake)) |
| return PTR_ERR(pmc->wake); |
| } else { |
| pmc->wake = base; |
| } |
| |
| res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "aotag"); |
| if (res) { |
| pmc->aotag = devm_ioremap_resource(&pdev->dev, res); |
| if (IS_ERR(pmc->aotag)) |
| return PTR_ERR(pmc->aotag); |
| } else { |
| pmc->aotag = base; |
| } |
| |
| res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "scratch"); |
| if (res) { |
| pmc->scratch = devm_ioremap_resource(&pdev->dev, res); |
| if (IS_ERR(pmc->scratch)) |
| return PTR_ERR(pmc->scratch); |
| } else { |
| pmc->scratch = base; |
| } |
| |
| pmc->clk = devm_clk_get_optional(&pdev->dev, "pclk"); |
| if (IS_ERR(pmc->clk)) |
| return dev_err_probe(&pdev->dev, PTR_ERR(pmc->clk), |
| "failed to get pclk\n"); |
| |
| /* |
| * PMC should be last resort for restarting since it soft-resets |
| * CPU without resetting everything else. |
| */ |
| err = devm_register_reboot_notifier(&pdev->dev, |
| &tegra_pmc_reboot_notifier); |
| if (err) { |
| dev_err(&pdev->dev, "unable to register reboot notifier, %d\n", |
| err); |
| return err; |
| } |
| |
| err = devm_register_sys_off_handler(&pdev->dev, |
| SYS_OFF_MODE_RESTART, |
| SYS_OFF_PRIO_LOW, |
| tegra_pmc_restart_handler, NULL); |
| if (err) { |
| dev_err(&pdev->dev, "failed to register sys-off handler: %d\n", |
| err); |
| return err; |
| } |
| |
| /* |
| * PMC should be primary power-off method if it soft-resets CPU, |
| * asking bootloader to shutdown hardware. |
| */ |
| err = devm_register_sys_off_handler(&pdev->dev, |
| SYS_OFF_MODE_POWER_OFF, |
| SYS_OFF_PRIO_FIRMWARE, |
| tegra_pmc_power_off_handler, NULL); |
| if (err) { |
| dev_err(&pdev->dev, "failed to register sys-off handler: %d\n", |
| err); |
| return err; |
| } |
| |
| /* |
| * PCLK clock rate can't be retrieved using CLK API because it |
| * causes lockup if CPU enters LP2 idle state from some other |
| * CLK notifier, hence we're caching the rate's value locally. |
| */ |
| if (pmc->clk) { |
| pmc->clk_nb.notifier_call = tegra_pmc_clk_notify_cb; |
| err = clk_notifier_register(pmc->clk, &pmc->clk_nb); |
| if (err) { |
| dev_err(&pdev->dev, |
| "failed to register clk notifier\n"); |
| return err; |
| } |
| |
| pmc->rate = clk_get_rate(pmc->clk); |
| } |
| |
| pmc->dev = &pdev->dev; |
| |
| tegra_pmc_init(pmc); |
| |
| tegra_pmc_init_tsense_reset(pmc); |
| |
| tegra_pmc_reset_sysfs_init(pmc); |
| |
| if (IS_ENABLED(CONFIG_DEBUG_FS)) { |
| err = tegra_powergate_debugfs_init(); |
| if (err < 0) |
| goto cleanup_sysfs; |
| } |
| |
| err = tegra_pmc_pinctrl_init(pmc); |
| if (err) |
| goto cleanup_debugfs; |
| |
| err = tegra_pmc_regmap_init(pmc); |
| if (err < 0) |
| goto cleanup_debugfs; |
| |
| err = tegra_powergate_init(pmc, pdev->dev.of_node); |
| if (err < 0) |
| goto cleanup_powergates; |
| |
| err = tegra_pmc_irq_init(pmc); |
| if (err < 0) |
| goto cleanup_powergates; |
| |
| mutex_lock(&pmc->powergates_lock); |
| iounmap(pmc->base); |
| pmc->base = base; |
| mutex_unlock(&pmc->powergates_lock); |
| |
| tegra_pmc_clock_register(pmc, pdev->dev.of_node); |
| platform_set_drvdata(pdev, pmc); |
| tegra_pm_init_suspend(); |
| |
| return 0; |
| |
| cleanup_powergates: |
| tegra_powergate_remove_all(pdev->dev.of_node); |
| cleanup_debugfs: |
| debugfs_remove(pmc->debugfs); |
| cleanup_sysfs: |
| device_remove_file(&pdev->dev, &dev_attr_reset_reason); |
| device_remove_file(&pdev->dev, &dev_attr_reset_level); |
| clk_notifier_unregister(pmc->clk, &pmc->clk_nb); |
| |
| return err; |
| } |
| |
| #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM) |
| static int tegra_pmc_suspend(struct device *dev) |
| { |
| struct tegra_pmc *pmc = dev_get_drvdata(dev); |
| |
| tegra_pmc_writel(pmc, virt_to_phys(tegra_resume), PMC_SCRATCH41); |
| |
| return 0; |
| } |
| |
| static int tegra_pmc_resume(struct device *dev) |
| { |
| struct tegra_pmc *pmc = dev_get_drvdata(dev); |
| |
| tegra_pmc_writel(pmc, 0x0, PMC_SCRATCH41); |
| |
| return 0; |
| } |
| |
| static SIMPLE_DEV_PM_OPS(tegra_pmc_pm_ops, tegra_pmc_suspend, tegra_pmc_resume); |
| |
| #endif |
| |
| static const char * const tegra20_powergates[] = { |
| [TEGRA_POWERGATE_CPU] = "cpu", |
| [TEGRA_POWERGATE_3D] = "td", |
| [TEGRA_POWERGATE_VENC] = "venc", |
| [TEGRA_POWERGATE_VDEC] = "vdec", |
| [TEGRA_POWERGATE_PCIE] = "pcie", |
| [TEGRA_POWERGATE_L2] = "l2", |
| [TEGRA_POWERGATE_MPE] = "mpe", |
| }; |
| |
| static const struct tegra_pmc_regs tegra20_pmc_regs = { |
| .scratch0 = 0x50, |
| .dpd_req = 0x1b8, |
| .dpd_status = 0x1bc, |
| .dpd2_req = 0x1c0, |
| .dpd2_status = 0x1c4, |
| .rst_status = 0x1b4, |
| .rst_source_shift = 0x0, |
| .rst_source_mask = 0x7, |
| .rst_level_shift = 0x0, |
| .rst_level_mask = 0x0, |
| }; |
| |
| static void tegra20_pmc_init(struct tegra_pmc *pmc) |
| { |
| u32 value, osc, pmu, off; |
| |
| /* Always enable CPU power request */ |
| value = tegra_pmc_readl(pmc, PMC_CNTRL); |
| value |= PMC_CNTRL_CPU_PWRREQ_OE; |
| tegra_pmc_writel(pmc, value, PMC_CNTRL); |
| |
| value = tegra_pmc_readl(pmc, PMC_CNTRL); |
| |
| if (pmc->sysclkreq_high) |
| value &= ~PMC_CNTRL_SYSCLK_POLARITY; |
| else |
| value |= PMC_CNTRL_SYSCLK_POLARITY; |
| |
| if (pmc->corereq_high) |
| value &= ~PMC_CNTRL_PWRREQ_POLARITY; |
| else |
| value |= PMC_CNTRL_PWRREQ_POLARITY; |
| |
| /* configure the output polarity while the request is tristated */ |
| tegra_pmc_writel(pmc, value, PMC_CNTRL); |
| |
| /* now enable the request */ |
| value = tegra_pmc_readl(pmc, PMC_CNTRL); |
| value |= PMC_CNTRL_SYSCLK_OE; |
| tegra_pmc_writel(pmc, value, PMC_CNTRL); |
| |
| /* program core timings which are applicable only for suspend state */ |
| if (pmc->suspend_mode != TEGRA_SUSPEND_NONE) { |
| osc = DIV_ROUND_UP(pmc->core_osc_time * 8192, 1000000); |
| pmu = DIV_ROUND_UP(pmc->core_pmu_time * 32768, 1000000); |
| off = DIV_ROUND_UP(pmc->core_off_time * 32768, 1000000); |
| tegra_pmc_writel(pmc, ((osc << 8) & 0xff00) | (pmu & 0xff), |
| PMC_COREPWRGOOD_TIMER); |
| tegra_pmc_writel(pmc, off, PMC_COREPWROFF_TIMER); |
| } |
| } |
| |
| static void tegra20_pmc_setup_irq_polarity(struct tegra_pmc *pmc, |
| struct device_node *np, |
| bool invert) |
| { |
| u32 value; |
| |
| value = tegra_pmc_readl(pmc, PMC_CNTRL); |
| |
| if (invert) |
| value |= PMC_CNTRL_INTR_POLARITY; |
| else |
| value &= ~PMC_CNTRL_INTR_POLARITY; |
| |
| tegra_pmc_writel(pmc, value, PMC_CNTRL); |
| } |
| |
| static const struct tegra_pmc_soc tegra20_pmc_soc = { |
| .supports_core_domain = true, |
| .num_powergates = ARRAY_SIZE(tegra20_powergates), |
| .powergates = tegra20_powergates, |
| .num_cpu_powergates = 0, |
| .cpu_powergates = NULL, |
| .has_tsense_reset = false, |
| .has_gpu_clamps = false, |
| .needs_mbist_war = false, |
| .has_impl_33v_pwr = false, |
| .maybe_tz_only = false, |
| .num_io_pads = 0, |
| .io_pads = NULL, |
| .num_pin_descs = 0, |
| .pin_descs = NULL, |
| .regs = &tegra20_pmc_regs, |
| .init = tegra20_pmc_init, |
| .setup_irq_polarity = tegra20_pmc_setup_irq_polarity, |
| .powergate_set = tegra20_powergate_set, |
| .reset_sources = NULL, |
| .num_reset_sources = 0, |
| .reset_levels = NULL, |
| .num_reset_levels = 0, |
| .pmc_clks_data = NULL, |
| .num_pmc_clks = 0, |
| .has_blink_output = true, |
| .has_usb_sleepwalk = true, |
| }; |
| |
| static const char * const tegra30_powergates[] = { |
| [TEGRA_POWERGATE_CPU] = "cpu0", |
| [TEGRA_POWERGATE_3D] = "td", |
| [TEGRA_POWERGATE_VENC] = "venc", |
| [TEGRA_POWERGATE_VDEC] = "vdec", |
| [TEGRA_POWERGATE_PCIE] = "pcie", |
| [TEGRA_POWERGATE_L2] = "l2", |
| [TEGRA_POWERGATE_MPE] = "mpe", |
| [TEGRA_POWERGATE_HEG] = "heg", |
| [TEGRA_POWERGATE_SATA] = "sata", |
| [TEGRA_POWERGATE_CPU1] = "cpu1", |
| [TEGRA_POWERGATE_CPU2] = "cpu2", |
| [TEGRA_POWERGATE_CPU3] = "cpu3", |
| [TEGRA_POWERGATE_CELP] = "celp", |
| [TEGRA_POWERGATE_3D1] = "td2", |
| }; |
| |
| static const u8 tegra30_cpu_powergates[] = { |
| TEGRA_POWERGATE_CPU, |
| TEGRA_POWERGATE_CPU1, |
| TEGRA_POWERGATE_CPU2, |
| TEGRA_POWERGATE_CPU3, |
| }; |
| |
| static const char * const tegra30_reset_sources[] = { |
| "POWER_ON_RESET", |
| "WATCHDOG", |
| "SENSOR", |
| "SW_MAIN", |
| "LP0" |
| }; |
| |
| static const struct tegra_pmc_soc tegra30_pmc_soc = { |
| .supports_core_domain = true, |
| .num_powergates = ARRAY_SIZE(tegra30_powergates), |
| .powergates = tegra30_powergates, |
| .num_cpu_powergates = ARRAY_SIZE(tegra30_cpu_powergates), |
| .cpu_powergates = tegra30_cpu_powergates, |
| .has_tsense_reset = true, |
| .has_gpu_clamps = false, |
| .needs_mbist_war = false, |
| .has_impl_33v_pwr = false, |
| .maybe_tz_only = false, |
| .num_io_pads = 0, |
| .io_pads = NULL, |
| .num_pin_descs = 0, |
| .pin_descs = NULL, |
| .regs = &tegra20_pmc_regs, |
| .init = tegra20_pmc_init, |
| .setup_irq_polarity = tegra20_pmc_setup_irq_polarity, |
| .powergate_set = tegra20_powergate_set, |
| .reset_sources = tegra30_reset_sources, |
| .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources), |
| .reset_levels = NULL, |
| .num_reset_levels = 0, |
| .pmc_clks_data = tegra_pmc_clks_data, |
| .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data), |
| .has_blink_output = true, |
| .has_usb_sleepwalk = true, |
| }; |
| |
| static const char * const tegra114_powergates[] = { |
| [TEGRA_POWERGATE_CPU] = "crail", |
| [TEGRA_POWERGATE_3D] = "td", |
| [TEGRA_POWERGATE_VENC] = "venc", |
| [TEGRA_POWERGATE_VDEC] = "vdec", |
| [TEGRA_POWERGATE_MPE] = "mpe", |
| [TEGRA_POWERGATE_HEG] = "heg", |
| [TEGRA_POWERGATE_CPU1] = "cpu1", |
| [TEGRA_POWERGATE_CPU2] = "cpu2", |
| [TEGRA_POWERGATE_CPU3] = "cpu3", |
| [TEGRA_POWERGATE_CELP] = "celp", |
| [TEGRA_POWERGATE_CPU0] = "cpu0", |
| [TEGRA_POWERGATE_C0NC] = "c0nc", |
| [TEGRA_POWERGATE_C1NC] = "c1nc", |
| [TEGRA_POWERGATE_DIS] = "dis", |
| [TEGRA_POWERGATE_DISB] = "disb", |
| [TEGRA_POWERGATE_XUSBA] = "xusba", |
| [TEGRA_POWERGATE_XUSBB] = "xusbb", |
| [TEGRA_POWERGATE_XUSBC] = "xusbc", |
| }; |
| |
| static const u8 tegra114_cpu_powergates[] = { |
| TEGRA_POWERGATE_CPU0, |
| TEGRA_POWERGATE_CPU1, |
| TEGRA_POWERGATE_CPU2, |
| TEGRA_POWERGATE_CPU3, |
| }; |
| |
| static const struct tegra_pmc_soc tegra114_pmc_soc = { |
| .supports_core_domain = false, |
| .num_powergates = ARRAY_SIZE(tegra114_powergates), |
| .powergates = tegra114_powergates, |
| .num_cpu_powergates = ARRAY_SIZE(tegra114_cpu_powergates), |
| .cpu_powergates = tegra114_cpu_powergates, |
| .has_tsense_reset = true, |
| .has_gpu_clamps = false, |
| .needs_mbist_war = false, |
| .has_impl_33v_pwr = false, |
| .maybe_tz_only = false, |
| .num_io_pads = 0, |
| .io_pads = NULL, |
| .num_pin_descs = 0, |
| .pin_descs = NULL, |
| .regs = &tegra20_pmc_regs, |
| .init = tegra20_pmc_init, |
| .setup_irq_polarity = tegra20_pmc_setup_irq_polarity, |
| .powergate_set = tegra114_powergate_set, |
| .reset_sources = tegra30_reset_sources, |
| .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources), |
| .reset_levels = NULL, |
| .num_reset_levels = 0, |
| .pmc_clks_data = tegra_pmc_clks_data, |
| .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data), |
| .has_blink_output = true, |
| .has_usb_sleepwalk = true, |
| }; |
| |
| static const char * const tegra124_powergates[] = { |
| [TEGRA_POWERGATE_CPU] = "crail", |
| [TEGRA_POWERGATE_3D] = "3d", |
| [TEGRA_POWERGATE_VENC] = "venc", |
| [TEGRA_POWERGATE_PCIE] = "pcie", |
| [TEGRA_POWERGATE_VDEC] = "vdec", |
| [TEGRA_POWERGATE_MPE] = "mpe", |
| [TEGRA_POWERGATE_HEG] = "heg", |
| [TEGRA_POWERGATE_SATA] = "sata", |
| [TEGRA_POWERGATE_CPU1] = "cpu1", |
| [TEGRA_POWERGATE_CPU2] = "cpu2", |
| [TEGRA_POWERGATE_CPU3] = "cpu3", |
| [TEGRA_POWERGATE_CELP] = "celp", |
| [TEGRA_POWERGATE_CPU0] = "cpu0", |
| [TEGRA_POWERGATE_C0NC] = "c0nc", |
| [TEGRA_POWERGATE_C1NC] = "c1nc", |
| [TEGRA_POWERGATE_SOR] = "sor", |
| [TEGRA_POWERGATE_DIS] = "dis", |
| [TEGRA_POWERGATE_DISB] = "disb", |
| [TEGRA_POWERGATE_XUSBA] = "xusba", |
| [TEGRA_POWERGATE_XUSBB] = "xusbb", |
| [TEGRA_POWERGATE_XUSBC] = "xusbc", |
| [TEGRA_POWERGATE_VIC] = "vic", |
| [TEGRA_POWERGATE_IRAM] = "iram", |
| }; |
| |
| static const u8 tegra124_cpu_powergates[] = { |
| TEGRA_POWERGATE_CPU0, |
| TEGRA_POWERGATE_CPU1, |
| TEGRA_POWERGATE_CPU2, |
| TEGRA_POWERGATE_CPU3, |
| }; |
| |
| #define TEGRA_IO_PAD(_id, _dpd, _voltage, _name) \ |
| ((struct tegra_io_pad_soc) { \ |
| .id = (_id), \ |
| .dpd = (_dpd), \ |
| .voltage = (_voltage), \ |
| .name = (_name), \ |
| }) |
| |
| #define TEGRA_IO_PIN_DESC(_id, _dpd, _voltage, _name) \ |
| ((struct pinctrl_pin_desc) { \ |
| .number = (_id), \ |
| .name = (_name) \ |
| }) |
| |
| #define TEGRA124_IO_PAD_TABLE(_pad) \ |
| /* .id .dpd .voltage .name */ \ |
| _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \ |
| _pad(TEGRA_IO_PAD_BB, 15, UINT_MAX, "bb"), \ |
| _pad(TEGRA_IO_PAD_CAM, 36, UINT_MAX, "cam"), \ |
| _pad(TEGRA_IO_PAD_COMP, 22, UINT_MAX, "comp"), \ |
| _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \ |
| _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csb"), \ |
| _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "cse"), \ |
| _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \ |
| _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \ |
| _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \ |
| _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \ |
| _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \ |
| _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \ |
| _pad(TEGRA_IO_PAD_HV, 38, UINT_MAX, "hv"), \ |
| _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \ |
| _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \ |
| _pad(TEGRA_IO_PAD_NAND, 13, UINT_MAX, "nand"), \ |
| _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \ |
| _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \ |
| _pad(TEGRA_IO_PAD_SDMMC1, 33, UINT_MAX, "sdmmc1"), \ |
| _pad(TEGRA_IO_PAD_SDMMC3, 34, UINT_MAX, "sdmmc3"), \ |
| _pad(TEGRA_IO_PAD_SDMMC4, 35, UINT_MAX, "sdmmc4"), \ |
| _pad(TEGRA_IO_PAD_SYS_DDC, 58, UINT_MAX, "sys_ddc"), \ |
| _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \ |
| _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \ |
| _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \ |
| _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \ |
| _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb_bias") |
| |
| static const struct tegra_io_pad_soc tegra124_io_pads[] = { |
| TEGRA124_IO_PAD_TABLE(TEGRA_IO_PAD) |
| }; |
| |
| static const struct pinctrl_pin_desc tegra124_pin_descs[] = { |
| TEGRA124_IO_PAD_TABLE(TEGRA_IO_PIN_DESC) |
| }; |
| |
| static const struct tegra_pmc_soc tegra124_pmc_soc = { |
| .supports_core_domain = false, |
| .num_powergates = ARRAY_SIZE(tegra124_powergates), |
| .powergates = tegra124_powergates, |
| .num_cpu_powergates = ARRAY_SIZE(tegra124_cpu_powergates), |
| .cpu_powergates = tegra124_cpu_powergates, |
| .has_tsense_reset = true, |
| .has_gpu_clamps = true, |
| .needs_mbist_war = false, |
| .has_impl_33v_pwr = false, |
| .maybe_tz_only = false, |
| .num_io_pads = ARRAY_SIZE(tegra124_io_pads), |
| .io_pads = tegra124_io_pads, |
| .num_pin_descs = ARRAY_SIZE(tegra124_pin_descs), |
| .pin_descs = tegra124_pin_descs, |
| .regs = &tegra20_pmc_regs, |
| .init = tegra20_pmc_init, |
| .setup_irq_polarity = tegra20_pmc_setup_irq_polarity, |
| .powergate_set = tegra114_powergate_set, |
| .reset_sources = tegra30_reset_sources, |
| .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources), |
| .reset_levels = NULL, |
| .num_reset_levels = 0, |
| .pmc_clks_data = tegra_pmc_clks_data, |
| .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data), |
| .has_blink_output = true, |
| .has_usb_sleepwalk = true, |
| }; |
| |
| static const char * const tegra210_powergates[] = { |
| [TEGRA_POWERGATE_CPU] = "crail", |
| [TEGRA_POWERGATE_3D] = "3d", |
| [TEGRA_POWERGATE_VENC] = "venc", |
| [TEGRA_POWERGATE_PCIE] = "pcie", |
| [TEGRA_POWERGATE_MPE] = "mpe", |
| [TEGRA_POWERGATE_SATA] = "sata", |
| [TEGRA_POWERGATE_CPU1] = "cpu1", |
| [TEGRA_POWERGATE_CPU2] = "cpu2", |
| [TEGRA_POWERGATE_CPU3] = "cpu3", |
| [TEGRA_POWERGATE_CPU0] = "cpu0", |
| [TEGRA_POWERGATE_C0NC] = "c0nc", |
| [TEGRA_POWERGATE_SOR] = "sor", |
| [TEGRA_POWERGATE_DIS] = "dis", |
| [TEGRA_POWERGATE_DISB] = "disb", |
| [TEGRA_POWERGATE_XUSBA] = "xusba", |
| [TEGRA_POWERGATE_XUSBB] = "xusbb", |
| [TEGRA_POWERGATE_XUSBC] = "xusbc", |
| [TEGRA_POWERGATE_VIC] = "vic", |
| [TEGRA_POWERGATE_IRAM] = "iram", |
| [TEGRA_POWERGATE_NVDEC] = "nvdec", |
| [TEGRA_POWERGATE_NVJPG] = "nvjpg", |
| [TEGRA_POWERGATE_AUD] = "aud", |
| [TEGRA_POWERGATE_DFD] = "dfd", |
| [TEGRA_POWERGATE_VE2] = "ve2", |
| }; |
| |
| static const u8 tegra210_cpu_powergates[] = { |
| TEGRA_POWERGATE_CPU0, |
| TEGRA_POWERGATE_CPU1, |
| TEGRA_POWERGATE_CPU2, |
| TEGRA_POWERGATE_CPU3, |
| }; |
| |
| #define TEGRA210_IO_PAD_TABLE(_pad) \ |
| /* .id .dpd .voltage .name */ \ |
| _pad(TEGRA_IO_PAD_AUDIO, 17, 5, "audio"), \ |
| _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 18, "audio-hv"), \ |
| _pad(TEGRA_IO_PAD_CAM, 36, 10, "cam"), \ |
| _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \ |
| _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \ |
| _pad(TEGRA_IO_PAD_CSIC, 42, UINT_MAX, "csic"), \ |
| _pad(TEGRA_IO_PAD_CSID, 43, UINT_MAX, "csid"), \ |
| _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "csie"), \ |
| _pad(TEGRA_IO_PAD_CSIF, 45, UINT_MAX, "csif"), \ |
| _pad(TEGRA_IO_PAD_DBG, 25, 19, "dbg"), \ |
| _pad(TEGRA_IO_PAD_DEBUG_NONAO, 26, UINT_MAX, "debug-nonao"), \ |
| _pad(TEGRA_IO_PAD_DMIC, 50, 20, "dmic"), \ |
| _pad(TEGRA_IO_PAD_DP, 51, UINT_MAX, "dp"), \ |
| _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \ |
| _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \ |
| _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \ |
| _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \ |
| _pad(TEGRA_IO_PAD_EMMC, 35, UINT_MAX, "emmc"), \ |
| _pad(TEGRA_IO_PAD_EMMC2, 37, UINT_MAX, "emmc2"), \ |
| _pad(TEGRA_IO_PAD_GPIO, 27, 21, "gpio"), \ |
| _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \ |
| _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \ |
| _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \ |
| _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \ |
| _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \ |
| _pad(TEGRA_IO_PAD_PEX_CNTRL, UINT_MAX, 11, "pex-cntrl"), \ |
| _pad(TEGRA_IO_PAD_SDMMC1, 33, 12, "sdmmc1"), \ |
| _pad(TEGRA_IO_PAD_SDMMC3, 34, 13, "sdmmc3"), \ |
| _pad(TEGRA_IO_PAD_SPI, 46, 22, "spi"), \ |
| _pad(TEGRA_IO_PAD_SPI_HV, 47, 23, "spi-hv"), \ |
| _pad(TEGRA_IO_PAD_UART, 14, 2, "uart"), \ |
| _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \ |
| _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \ |
| _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \ |
| _pad(TEGRA_IO_PAD_USB3, 18, UINT_MAX, "usb3"), \ |
| _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias") |
| |
| static const struct tegra_io_pad_soc tegra210_io_pads[] = { |
| TEGRA210_IO_PAD_TABLE(TEGRA_IO_PAD) |
| }; |
| |
| static const struct pinctrl_pin_desc tegra210_pin_descs[] = { |
| TEGRA210_IO_PAD_TABLE(TEGRA_IO_PIN_DESC) |
| }; |
| |
| static const char * const tegra210_reset_sources[] = { |
| "POWER_ON_RESET", |
| "WATCHDOG", |
| "SENSOR", |
| "SW_MAIN", |
| "LP0", |
| "AOTAG" |
| }; |
| |
| static const struct tegra_wake_event tegra210_wake_events[] = { |
| TEGRA_WAKE_IRQ("rtc", 16, 2), |
| TEGRA_WAKE_IRQ("pmu", 51, 86), |
| }; |
| |
| static const struct tegra_pmc_soc tegra210_pmc_soc = { |
| .supports_core_domain = false, |
| .num_powergates = ARRAY_SIZE(tegra210_powergates), |
| .powergates = tegra210_powergates, |
| .num_cpu_powergates = ARRAY_SIZE(tegra210_cpu_powergates), |
| .cpu_powergates = tegra210_cpu_powergates, |
| .has_tsense_reset = true, |
| .has_gpu_clamps = true, |
| .needs_mbist_war = true, |
| .has_impl_33v_pwr = false, |
| .maybe_tz_only = true, |
| .num_io_pads = ARRAY_SIZE(tegra210_io_pads), |
| .io_pads = tegra210_io_pads, |
| .num_pin_descs = ARRAY_SIZE(tegra210_pin_descs), |
| .pin_descs = tegra210_pin_descs, |
| .regs = &tegra20_pmc_regs, |
| .init = tegra20_pmc_init, |
| .setup_irq_polarity = tegra20_pmc_setup_irq_polarity, |
| .powergate_set = tegra114_powergate_set, |
| .irq_set_wake = tegra210_pmc_irq_set_wake, |
| .irq_set_type = tegra210_pmc_irq_set_type, |
| .reset_sources = tegra210_reset_sources, |
| .num_reset_sources = ARRAY_SIZE(tegra210_reset_sources), |
| .reset_levels = NULL, |
| .num_reset_levels = 0, |
| .num_wake_events = ARRAY_SIZE(tegra210_wake_events), |
| .wake_events = tegra210_wake_events, |
| .pmc_clks_data = tegra_pmc_clks_data, |
| .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data), |
| .has_blink_output = true, |
| .has_usb_sleepwalk = true, |
| }; |
| |
| #define TEGRA186_IO_PAD_TABLE(_pad) \ |
| /* .id .dpd .voltage .name */ \ |
| _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \ |
| _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \ |
| _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \ |
| _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \ |
| _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \ |
| _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \ |
| _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \ |
| _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias"), \ |
| _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \ |
| _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \ |
| _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \ |
| _pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \ |
| _pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \ |
| _pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \ |
| _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \ |
| _pad(TEGRA_IO_PAD_SDMMC2_HV, 34, 5, "sdmmc2-hv"), \ |
| _pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \ |
| _pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \ |
| _pad(TEGRA_IO_PAD_DSIB, 40, UINT_MAX, "dsib"), \ |
| _pad(TEGRA_IO_PAD_DSIC, 41, UINT_MAX, "dsic"), \ |
| _pad(TEGRA_IO_PAD_DSID, 42, UINT_MAX, "dsid"), \ |
| _pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \ |
| _pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \ |
| _pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \ |
| _pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \ |
| _pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \ |
| _pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \ |
| _pad(TEGRA_IO_PAD_DMIC_HV, 52, 2, "dmic-hv"), \ |
| _pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \ |
| _pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \ |
| _pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \ |
| _pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \ |
| _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \ |
| _pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv") |
| |
| static const struct tegra_io_pad_soc tegra186_io_pads[] = { |
| TEGRA186_IO_PAD_TABLE(TEGRA_IO_PAD) |
| }; |
| |
| static const struct pinctrl_pin_desc tegra186_pin_descs[] = { |
| TEGRA186_IO_PAD_TABLE(TEGRA_IO_PIN_DESC) |
| }; |
| |
| static const struct tegra_pmc_regs tegra186_pmc_regs = { |
| .scratch0 = 0x2000, |
| .dpd_req = 0x74, |
| .dpd_status = 0x78, |
| .dpd2_req = 0x7c, |
| .dpd2_status = 0x80, |
| .rst_status = 0x70, |
| .rst_source_shift = 0x2, |
| .rst_source_mask = 0x3c, |
| .rst_level_shift = 0x0, |
| .rst_level_mask = 0x3, |
| }; |
| |
| static void tegra186_pmc_setup_irq_polarity(struct tegra_pmc *pmc, |
| struct device_node *np, |
| bool invert) |
| { |
| struct resource regs; |
| void __iomem *wake; |
| u32 value; |
| int index; |
| |
| index = of_property_match_string(np, "reg-names", "wake"); |
| if (index < 0) { |
| dev_err(pmc->dev, "failed to find PMC wake registers\n"); |
| return; |
| } |
| |
| of_address_to_resource(np, index, ®s); |
| |
| wake = ioremap(regs.start, resource_size(®s)); |
| if (!wake) { |
| dev_err(pmc->dev, "failed to map PMC wake registers\n"); |
| return; |
| } |
| |
| value = readl(wake + WAKE_AOWAKE_CTRL); |
| |
| if (invert) |
| value |= WAKE_AOWAKE_CTRL_INTR_POLARITY; |
| else |
| value &= ~WAKE_AOWAKE_CTRL_INTR_POLARITY; |
| |
| writel(value, wake + WAKE_AOWAKE_CTRL); |
| |
| iounmap(wake); |
| } |
| |
| static const char * const tegra186_reset_sources[] = { |
| "SYS_RESET", |
| "AOWDT", |
| "MCCPLEXWDT", |
| "BPMPWDT", |
| "SCEWDT", |
| "SPEWDT", |
| "APEWDT", |
| "BCCPLEXWDT", |
| "SENSOR", |
| "AOTAG", |
| "VFSENSOR", |
| "SWREST", |
| "SC7", |
| "HSM", |
| "CORESIGHT" |
| }; |
| |
| static const char * const tegra186_reset_levels[] = { |
| "L0", "L1", "L2", "WARM" |
| }; |
| |
| static const struct tegra_wake_event tegra186_wake_events[] = { |
| TEGRA_WAKE_IRQ("pmu", 24, 209), |
| TEGRA_WAKE_GPIO("power", 29, 1, TEGRA186_AON_GPIO(FF, 0)), |
| TEGRA_WAKE_IRQ("rtc", 73, 10), |
| }; |
| |
| static const struct tegra_pmc_soc tegra186_pmc_soc = { |
| .supports_core_domain = false, |
| .num_powergates = 0, |
| .powergates = NULL, |
| .num_cpu_powergates = 0, |
| .cpu_powergates = NULL, |
| .has_tsense_reset = false, |
| .has_gpu_clamps = false, |
| .needs_mbist_war = false, |
| .has_impl_33v_pwr = true, |
| .maybe_tz_only = false, |
| .num_io_pads = ARRAY_SIZE(tegra186_io_pads), |
| .io_pads = tegra186_io_pads, |
| .num_pin_descs = ARRAY_SIZE(tegra186_pin_descs), |
| .pin_descs = tegra186_pin_descs, |
| .regs = &tegra186_pmc_regs, |
| .init = NULL, |
| .setup_irq_polarity = tegra186_pmc_setup_irq_polarity, |
| .irq_set_wake = tegra186_pmc_irq_set_wake, |
| .irq_set_type = tegra186_pmc_irq_set_type, |
| .reset_sources = tegra186_reset_sources, |
| .num_reset_sources = ARRAY_SIZE(tegra186_reset_sources), |
| .reset_levels = tegra186_reset_levels, |
| .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels), |
| .num_wake_events = ARRAY_SIZE(tegra186_wake_events), |
| .wake_events = tegra186_wake_events, |
| .pmc_clks_data = NULL, |
| .num_pmc_clks = 0, |
| .has_blink_output = false, |
| .has_usb_sleepwalk = false, |
| }; |
| |
| #define TEGRA194_IO_PAD_TABLE(_pad) \ |
| /* .id .dpd .voltage .name */ \ |
| _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \ |
| _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \ |
| _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \ |
| _pad(TEGRA_IO_PAD_EQOS, 8, UINT_MAX, "eqos"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK_2_BIAS, 9, UINT_MAX, "pex-clk-2-bias"), \ |
| _pad(TEGRA_IO_PAD_PEX_CLK_2, 10, UINT_MAX, "pex-clk-2"), \ |
| _pad(TEGRA_IO_PAD_DAP3, 11, UINT_MAX, "dap3"), \ |
| _pad(TEGRA_IO_PAD_DAP5, 12, UINT_MAX, "dap5"), \ |
| _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \ |
| _pad(TEGRA_IO_PAD_PWR_CTL, 15, UINT_MAX, "pwr-ctl"), \ |
| _pad(TEGRA_IO_PAD_SOC_GPIO53, 16, UINT_MAX, "soc-gpio53"), \ |
| _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \ |
| _pad(TEGRA_IO_PAD_GP_PWM2, 18, UINT_MAX, "gp-pwm2"), \ |
| _pad(TEGRA_IO_PAD_GP_PWM3, 19, UINT_MAX, "gp-pwm3"), \ |
| _pad(TEGRA_IO_PAD_SOC_GPIO12, 20, UINT_MAX, "soc-gpio12"), \ |
| _pad(TEGRA_IO_PAD_SOC_GPIO13, 21, UINT_MAX, "soc-gpio13"), \ |
| _pad(TEGRA_IO_PAD_SOC_GPIO10, 22, UINT_MAX, "soc-gpio10"), \ |
| _pad(TEGRA_IO_PAD_UART4, 23, UINT_MAX, "uart4"), \ |
| _pad(TEGRA_IO_PAD_UART5, 24, UINT_MAX, "uart5"), \ |
| _pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \ |
| _pad(TEGRA_IO_PAD_HDMI_DP3, 26, UINT_MAX, "hdmi-dp3"), \ |
| _pad(TEGRA_IO_PAD_HDMI_DP2, 27, UINT_MAX, "hdmi-dp2"), \ |
| _pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \ |
| _pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \ |
| _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \ |
| _pad(TEGRA_IO_PAD_PEX_CTL2, 33, UINT_MAX, "pex-ctl2"), \ |
| _pad(TEGRA_IO_PAD_PEX_L0_RST_N, 34, UINT_MAX, "pex-l0-rst"), \ |
| _pad(TEGRA_IO_PAD_PEX_L1_RST_N, 35, UINT_MAX, "pex-l1-rst"), \ |
| _pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \ |
| _pad(TEGRA_IO_PAD_PEX_L5_RST_N, 37, UINT_MAX, "pex-l5-rst"), \ |
| _pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \ |
| _pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \ |
| _pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \ |
| _pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \ |
| _pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \ |
| _pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \ |
| _pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \ |
| _pad(TEGRA_IO_PAD_CSIG, 50, UINT_MAX, "csig"), \ |
| _pad(TEGRA_IO_PAD_CSIH, 51, UINT_MAX, "csih"), \ |
| _pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \ |
| _pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \ |
| _pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \ |
| _pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \ |
| _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \ |
| _pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv") |
| |
| static const struct tegra_io_pad_soc tegra194_io_pads[] = { |
| TEGRA194_IO_PAD_TABLE(TEGRA_IO_PAD) |
| }; |
| |
| static const struct pinctrl_pin_desc tegra194_pin_descs[] = { |
| TEGRA194_IO_PAD_TABLE(TEGRA_IO_PIN_DESC) |
| }; |
| |
| static const struct tegra_pmc_regs tegra194_pmc_regs = { |
| .scratch0 = 0x2000, |
| .dpd_req = 0x74, |
| .dpd_status = 0x78, |
| .dpd2_req = 0x7c, |
| .dpd2_status = 0x80, |
| .rst_status = 0x70, |
| .rst_source_shift = 0x2, |
| .rst_source_mask = 0x7c, |
| .rst_level_shift = 0x0, |
| .rst_level_mask = 0x3, |
| }; |
| |
| static const char * const tegra194_reset_sources[] = { |
| "SYS_RESET_N", |
| "AOWDT", |
| "BCCPLEXWDT", |
| "BPMPWDT", |
| "SCEWDT", |
| "SPEWDT", |
| "APEWDT", |
| "LCCPLEXWDT", |
| "SENSOR", |
| "AOTAG", |
| "VFSENSOR", |
| "MAINSWRST", |
| "SC7", |
| "HSM", |
| "CSITE", |
| "RCEWDT", |
| "PVA0WDT", |
| "PVA1WDT", |
| "L1A_ASYNC", |
| "BPMPBOOT", |
| "FUSECRC", |
| }; |
| |
| static const struct tegra_wake_event tegra194_wake_events[] = { |
| TEGRA_WAKE_IRQ("pmu", 24, 209), |
| TEGRA_WAKE_GPIO("power", 29, 1, TEGRA194_AON_GPIO(EE, 4)), |
| TEGRA_WAKE_IRQ("rtc", 73, 10), |
| TEGRA_WAKE_SIMPLE("usb3-port-0", 76), |
| TEGRA_WAKE_SIMPLE("usb3-port-1", 77), |
| TEGRA_WAKE_SIMPLE("usb3-port-2-3", 78), |
| TEGRA_WAKE_SIMPLE("usb2-port-0", 79), |
| TEGRA_WAKE_SIMPLE("usb2-port-1", 80), |
| TEGRA_WAKE_SIMPLE("usb2-port-2", 81), |
| TEGRA_WAKE_SIMPLE("usb2-port-3", 82), |
| }; |
| |
| static const struct tegra_pmc_soc tegra194_pmc_soc = { |
| .supports_core_domain = false, |
| .num_powergates = 0, |
| .powergates = NULL, |
| .num_cpu_powergates = 0, |
| .cpu_powergates = NULL, |
| .has_tsense_reset = false, |
| .has_gpu_clamps = false, |
| .needs_mbist_war = false, |
| .has_impl_33v_pwr = true, |
| .maybe_tz_only = false, |
| .num_io_pads = ARRAY_SIZE(tegra194_io_pads), |
| .io_pads = tegra194_io_pads, |
| .num_pin_descs = ARRAY_SIZE(tegra194_pin_descs), |
| .pin_descs = tegra194_pin_descs, |
| .regs = &tegra194_pmc_regs, |
| .init = NULL, |
| .setup_irq_polarity = tegra186_pmc_setup_irq_polarity, |
| .irq_set_wake = tegra186_pmc_irq_set_wake, |
| .irq_set_type = tegra186_pmc_irq_set_type, |
| .reset_sources = tegra194_reset_sources, |
| .num_reset_sources = ARRAY_SIZE(tegra194_reset_sources), |
| .reset_levels = tegra186_reset_levels, |
| .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels), |
| .num_wake_events = ARRAY_SIZE(tegra194_wake_events), |
| .wake_events = tegra194_wake_events, |
| .pmc_clks_data = NULL, |
| .num_pmc_clks = 0, |
| .has_blink_output = false, |
| .has_usb_sleepwalk = false, |
| }; |
| |
| static const struct tegra_pmc_regs tegra234_pmc_regs = { |
| .scratch0 = 0x2000, |
| .dpd_req = 0, |
| .dpd_status = 0, |
| .dpd2_req = 0, |
| .dpd2_status = 0, |
| .rst_status = 0x70, |
| .rst_source_shift = 0x2, |
| .rst_source_mask = 0xfc, |
| .rst_level_shift = 0x0, |
| .rst_level_mask = 0x3, |
| }; |
| |
| static const char * const tegra234_reset_sources[] = { |
| "SYS_RESET_N", /* 0x0 */ |
| "AOWDT", |
| "BCCPLEXWDT", |
| "BPMPWDT", |
| "SCEWDT", |
| "SPEWDT", |
| "APEWDT", |
| "LCCPLEXWDT", |
| "SENSOR", /* 0x8 */ |
| NULL, |
| NULL, |
| "MAINSWRST", |
| "SC7", |
| "HSM", |
| NULL, |
| "RCEWDT", |
| NULL, /* 0x10 */ |
| NULL, |
| NULL, |
| "BPMPBOOT", |
| "FUSECRC", |
| "DCEWDT", |
| "PSCWDT", |
| "PSC", |
| "CSITE_SW", /* 0x18 */ |
| "POD", |
| "SCPM", |
| "VREFRO_POWERBAD", |
| "VMON", |
| "FMON", |
| "FSI_R5WDT", |
| "FSI_THERM", |
| "FSI_R52C0WDT", /* 0x20 */ |
| "FSI_R52C1WDT", |
| "FSI_R52C2WDT", |
| "FSI_R52C3WDT", |
| "FSI_FMON", |
| "FSI_VMON", /* 0x25 */ |
| }; |
| |
| static const struct tegra_wake_event tegra234_wake_events[] = { |
| TEGRA_WAKE_GPIO("power", 29, 1, TEGRA234_AON_GPIO(EE, 4)), |
| TEGRA_WAKE_IRQ("rtc", 73, 10), |
| }; |
| |
| static const struct tegra_pmc_soc tegra234_pmc_soc = { |
| .supports_core_domain = false, |
| .num_powergates = 0, |
| .powergates = NULL, |
| .num_cpu_powergates = 0, |
| .cpu_powergates = NULL, |
| .has_tsense_reset = false, |
| .has_gpu_clamps = false, |
| .needs_mbist_war = false, |
| .has_impl_33v_pwr = true, |
| .maybe_tz_only = false, |
| .num_io_pads = 0, |
| .io_pads = NULL, |
| .num_pin_descs = 0, |
| .pin_descs = NULL, |
| .regs = &tegra234_pmc_regs, |
| .init = NULL, |
| .setup_irq_polarity = tegra186_pmc_setup_irq_polarity, |
| .irq_set_wake = tegra186_pmc_irq_set_wake, |
| .irq_set_type = tegra186_pmc_irq_set_type, |
| .reset_sources = tegra234_reset_sources, |
| .num_reset_sources = ARRAY_SIZE(tegra234_reset_sources), |
| .reset_levels = tegra186_reset_levels, |
| .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels), |
| .num_wake_events = ARRAY_SIZE(tegra234_wake_events), |
| .wake_events = tegra234_wake_events, |
| .pmc_clks_data = NULL, |
| .num_pmc_clks = 0, |
| .has_blink_output = false, |
| }; |
| |
| static const struct of_device_id tegra_pmc_match[] = { |
| { .compatible = "nvidia,tegra234-pmc", .data = &tegra234_pmc_soc }, |
| { .compatible = "nvidia,tegra194-pmc", .data = &tegra194_pmc_soc }, |
| { .compatible = "nvidia,tegra186-pmc", .data = &tegra186_pmc_soc }, |
| { .compatible = "nvidia,tegra210-pmc", .data = &tegra210_pmc_soc }, |
| { .compatible = "nvidia,tegra132-pmc", .data = &tegra124_pmc_soc }, |
| { .compatible = "nvidia,tegra124-pmc", .data = &tegra124_pmc_soc }, |
| { .compatible = "nvidia,tegra114-pmc", .data = &tegra114_pmc_soc }, |
| { .compatible = "nvidia,tegra30-pmc", .data = &tegra30_pmc_soc }, |
| { .compatible = "nvidia,tegra20-pmc", .data = &tegra20_pmc_soc }, |
| { } |
| }; |
| |
| static void tegra_pmc_sync_state(struct device *dev) |
| { |
| int err; |
| |
| /* |
| * Newer device-trees have power domains, but we need to prepare all |
| * device drivers with runtime PM and OPP support first, otherwise |
| * state syncing is unsafe. |
| */ |
| if (!pmc->soc->supports_core_domain) |
| return; |
| |
| /* |
| * Older device-trees don't have core PD, and thus, there are |
| * no dependencies that will block the state syncing. We shouldn't |
| * mark the domain as synced in this case. |
| */ |
| if (!pmc->core_domain_registered) |
| return; |
| |
| pmc->core_domain_state_synced = true; |
| |
| /* this is a no-op if core regulator isn't used */ |
| mutex_lock(&pmc->powergates_lock); |
| err = dev_pm_opp_sync_regulators(dev); |
| mutex_unlock(&pmc->powergates_lock); |
| |
| if (err) |
| dev_err(dev, "failed to sync regulators: %d\n", err); |
| } |
| |
| static struct platform_driver tegra_pmc_driver = { |
| .driver = { |
| .name = "tegra-pmc", |
| .suppress_bind_attrs = true, |
| .of_match_table = tegra_pmc_match, |
| #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM) |
| .pm = &tegra_pmc_pm_ops, |
| #endif |
| .sync_state = tegra_pmc_sync_state, |
| }, |
| .probe = tegra_pmc_probe, |
| }; |
| builtin_platform_driver(tegra_pmc_driver); |
| |
| static bool __init tegra_pmc_detect_tz_only(struct tegra_pmc *pmc) |
| { |
| u32 value, saved; |
| |
| saved = readl(pmc->base + pmc->soc->regs->scratch0); |
| value = saved ^ 0xffffffff; |
| |
| if (value == 0xffffffff) |
| value = 0xdeadbeef; |
| |
| /* write pattern and read it back */ |
| writel(value, pmc->base + pmc->soc->regs->scratch0); |
| value = readl(pmc->base + pmc->soc->regs->scratch0); |
| |
| /* if we read all-zeroes, access is restricted to TZ only */ |
| if (value == 0) { |
| pr_info("access to PMC is restricted to TZ\n"); |
| return true; |
| } |
| |
| /* restore original value */ |
| writel(saved, pmc->base + pmc->soc->regs->scratch0); |
| |
| return false; |
| } |
| |
| /* |
| * Early initialization to allow access to registers in the very early boot |
| * process. |
| */ |
| static int __init tegra_pmc_early_init(void) |
| { |
| const struct of_device_id *match; |
| struct device_node *np; |
| struct resource regs; |
| unsigned int i; |
| bool invert; |
| |
| mutex_init(&pmc->powergates_lock); |
| |
| np = of_find_matching_node_and_match(NULL, tegra_pmc_match, &match); |
| if (!np) { |
| /* |
| * Fall back to legacy initialization for 32-bit ARM only. All |
| * 64-bit ARM device tree files for Tegra are required to have |
| * a PMC node. |
| * |
| * This is for backwards-compatibility with old device trees |
| * that didn't contain a PMC node. Note that in this case the |
| * SoC data can't be matched and therefore powergating is |
| * disabled. |
| */ |
| if (IS_ENABLED(CONFIG_ARM) && soc_is_tegra()) { |
| pr_warn("DT node not found, powergating disabled\n"); |
| |
| regs.start = 0x7000e400; |
| regs.end = 0x7000e7ff; |
| regs.flags = IORESOURCE_MEM; |
| |
| pr_warn("Using memory region %pR\n", ®s); |
| } else { |
| /* |
| * At this point we're not running on Tegra, so play |
| * nice with multi-platform kernels. |
| */ |
| return 0; |
| } |
| } else { |
| /* |
| * Extract information from the device tree if we've found a |
| * matching node. |
| */ |
| if (of_address_to_resource(np, 0, ®s) < 0) { |
| pr_err("failed to get PMC registers\n"); |
| of_node_put(np); |
| return -ENXIO; |
| } |
| } |
| |
| pmc->base = ioremap(regs.start, resource_size(®s)); |
| if (!pmc->base) { |
| pr_err("failed to map PMC registers\n"); |
| of_node_put(np); |
| return -ENXIO; |
| } |
| |
| if (of_device_is_available(np)) { |
| pmc->soc = match->data; |
| |
| if (pmc->soc->maybe_tz_only) |
| pmc->tz_only = tegra_pmc_detect_tz_only(pmc); |
| |
| /* Create a bitmap of the available and valid partitions */ |
| for (i = 0; i < pmc->soc->num_powergates; i++) |
| if (pmc->soc->powergates[i]) |
| set_bit(i, pmc->powergates_available); |
| |
| /* |
| * Invert the interrupt polarity if a PMC device tree node |
| * exists and contains the nvidia,invert-interrupt property. |
| */ |
| invert = of_property_read_bool(np, "nvidia,invert-interrupt"); |
| |
| pmc->soc->setup_irq_polarity(pmc, np, invert); |
| |
| of_node_put(np); |
| } |
| |
| return 0; |
| } |
| early_initcall(tegra_pmc_early_init); |
