| /* |
| * Copyright (c) 2014 MediaTek Inc. |
| * Author: Flora Fu, MediaTek |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| #include <linux/clk.h> |
| #include <linux/interrupt.h> |
| #include <linux/io.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/of_device.h> |
| #include <linux/platform_device.h> |
| #include <linux/regmap.h> |
| #include <linux/reset.h> |
| |
| #define PWRAP_MT8135_BRIDGE_IORD_ARB_EN 0x4 |
| #define PWRAP_MT8135_BRIDGE_WACS3_EN 0x10 |
| #define PWRAP_MT8135_BRIDGE_INIT_DONE3 0x14 |
| #define PWRAP_MT8135_BRIDGE_WACS4_EN 0x24 |
| #define PWRAP_MT8135_BRIDGE_INIT_DONE4 0x28 |
| #define PWRAP_MT8135_BRIDGE_INT_EN 0x38 |
| #define PWRAP_MT8135_BRIDGE_TIMER_EN 0x48 |
| #define PWRAP_MT8135_BRIDGE_WDT_UNIT 0x50 |
| #define PWRAP_MT8135_BRIDGE_WDT_SRC_EN 0x54 |
| |
| /* macro for wrapper status */ |
| #define PWRAP_GET_WACS_RDATA(x) (((x) >> 0) & 0x0000ffff) |
| #define PWRAP_GET_WACS_FSM(x) (((x) >> 16) & 0x00000007) |
| #define PWRAP_GET_WACS_REQ(x) (((x) >> 19) & 0x00000001) |
| #define PWRAP_STATE_SYNC_IDLE0 (1 << 20) |
| #define PWRAP_STATE_INIT_DONE0 (1 << 21) |
| |
| /* macro for WACS FSM */ |
| #define PWRAP_WACS_FSM_IDLE 0x00 |
| #define PWRAP_WACS_FSM_REQ 0x02 |
| #define PWRAP_WACS_FSM_WFDLE 0x04 |
| #define PWRAP_WACS_FSM_WFVLDCLR 0x06 |
| #define PWRAP_WACS_INIT_DONE 0x01 |
| #define PWRAP_WACS_WACS_SYNC_IDLE 0x01 |
| #define PWRAP_WACS_SYNC_BUSY 0x00 |
| |
| /* macro for device wrapper default value */ |
| #define PWRAP_DEW_READ_TEST_VAL 0x5aa5 |
| #define PWRAP_DEW_WRITE_TEST_VAL 0xa55a |
| |
| /* macro for manual command */ |
| #define PWRAP_MAN_CMD_SPI_WRITE (1 << 13) |
| #define PWRAP_MAN_CMD_OP_CSH (0x0 << 8) |
| #define PWRAP_MAN_CMD_OP_CSL (0x1 << 8) |
| #define PWRAP_MAN_CMD_OP_CK (0x2 << 8) |
| #define PWRAP_MAN_CMD_OP_OUTS (0x8 << 8) |
| #define PWRAP_MAN_CMD_OP_OUTD (0x9 << 8) |
| #define PWRAP_MAN_CMD_OP_OUTQ (0xa << 8) |
| |
| /* macro for slave device wrapper registers */ |
| #define PWRAP_DEW_BASE 0xbc00 |
| #define PWRAP_DEW_EVENT_OUT_EN (PWRAP_DEW_BASE + 0x0) |
| #define PWRAP_DEW_DIO_EN (PWRAP_DEW_BASE + 0x2) |
| #define PWRAP_DEW_EVENT_SRC_EN (PWRAP_DEW_BASE + 0x4) |
| #define PWRAP_DEW_EVENT_SRC (PWRAP_DEW_BASE + 0x6) |
| #define PWRAP_DEW_EVENT_FLAG (PWRAP_DEW_BASE + 0x8) |
| #define PWRAP_DEW_READ_TEST (PWRAP_DEW_BASE + 0xa) |
| #define PWRAP_DEW_WRITE_TEST (PWRAP_DEW_BASE + 0xc) |
| #define PWRAP_DEW_CRC_EN (PWRAP_DEW_BASE + 0xe) |
| #define PWRAP_DEW_CRC_VAL (PWRAP_DEW_BASE + 0x10) |
| #define PWRAP_DEW_MON_GRP_SEL (PWRAP_DEW_BASE + 0x12) |
| #define PWRAP_DEW_MON_FLAG_SEL (PWRAP_DEW_BASE + 0x14) |
| #define PWRAP_DEW_EVENT_TEST (PWRAP_DEW_BASE + 0x16) |
| #define PWRAP_DEW_CIPHER_KEY_SEL (PWRAP_DEW_BASE + 0x18) |
| #define PWRAP_DEW_CIPHER_IV_SEL (PWRAP_DEW_BASE + 0x1a) |
| #define PWRAP_DEW_CIPHER_LOAD (PWRAP_DEW_BASE + 0x1c) |
| #define PWRAP_DEW_CIPHER_START (PWRAP_DEW_BASE + 0x1e) |
| #define PWRAP_DEW_CIPHER_RDY (PWRAP_DEW_BASE + 0x20) |
| #define PWRAP_DEW_CIPHER_MODE (PWRAP_DEW_BASE + 0x22) |
| #define PWRAP_DEW_CIPHER_SWRST (PWRAP_DEW_BASE + 0x24) |
| #define PWRAP_MT8173_DEW_CIPHER_IV0 (PWRAP_DEW_BASE + 0x26) |
| #define PWRAP_MT8173_DEW_CIPHER_IV1 (PWRAP_DEW_BASE + 0x28) |
| #define PWRAP_MT8173_DEW_CIPHER_IV2 (PWRAP_DEW_BASE + 0x2a) |
| #define PWRAP_MT8173_DEW_CIPHER_IV3 (PWRAP_DEW_BASE + 0x2c) |
| #define PWRAP_MT8173_DEW_CIPHER_IV4 (PWRAP_DEW_BASE + 0x2e) |
| #define PWRAP_MT8173_DEW_CIPHER_IV5 (PWRAP_DEW_BASE + 0x30) |
| |
| enum pwrap_regs { |
| PWRAP_MUX_SEL, |
| PWRAP_WRAP_EN, |
| PWRAP_DIO_EN, |
| PWRAP_SIDLY, |
| PWRAP_CSHEXT_WRITE, |
| PWRAP_CSHEXT_READ, |
| PWRAP_CSLEXT_START, |
| PWRAP_CSLEXT_END, |
| PWRAP_STAUPD_PRD, |
| PWRAP_STAUPD_GRPEN, |
| PWRAP_STAUPD_MAN_TRIG, |
| PWRAP_STAUPD_STA, |
| PWRAP_WRAP_STA, |
| PWRAP_HARB_INIT, |
| PWRAP_HARB_HPRIO, |
| PWRAP_HIPRIO_ARB_EN, |
| PWRAP_HARB_STA0, |
| PWRAP_HARB_STA1, |
| PWRAP_MAN_EN, |
| PWRAP_MAN_CMD, |
| PWRAP_MAN_RDATA, |
| PWRAP_MAN_VLDCLR, |
| PWRAP_WACS0_EN, |
| PWRAP_INIT_DONE0, |
| PWRAP_WACS0_CMD, |
| PWRAP_WACS0_RDATA, |
| PWRAP_WACS0_VLDCLR, |
| PWRAP_WACS1_EN, |
| PWRAP_INIT_DONE1, |
| PWRAP_WACS1_CMD, |
| PWRAP_WACS1_RDATA, |
| PWRAP_WACS1_VLDCLR, |
| PWRAP_WACS2_EN, |
| PWRAP_INIT_DONE2, |
| PWRAP_WACS2_CMD, |
| PWRAP_WACS2_RDATA, |
| PWRAP_WACS2_VLDCLR, |
| PWRAP_INT_EN, |
| PWRAP_INT_FLG_RAW, |
| PWRAP_INT_FLG, |
| PWRAP_INT_CLR, |
| PWRAP_SIG_ADR, |
| PWRAP_SIG_MODE, |
| PWRAP_SIG_VALUE, |
| PWRAP_SIG_ERRVAL, |
| PWRAP_CRC_EN, |
| PWRAP_TIMER_EN, |
| PWRAP_TIMER_STA, |
| PWRAP_WDT_UNIT, |
| PWRAP_WDT_SRC_EN, |
| PWRAP_WDT_FLG, |
| PWRAP_DEBUG_INT_SEL, |
| PWRAP_CIPHER_KEY_SEL, |
| PWRAP_CIPHER_IV_SEL, |
| PWRAP_CIPHER_RDY, |
| PWRAP_CIPHER_MODE, |
| PWRAP_CIPHER_SWRST, |
| PWRAP_DCM_EN, |
| PWRAP_DCM_DBC_PRD, |
| |
| /* MT8135 only regs */ |
| PWRAP_CSHEXT, |
| PWRAP_EVENT_IN_EN, |
| PWRAP_EVENT_DST_EN, |
| PWRAP_RRARB_INIT, |
| PWRAP_RRARB_EN, |
| PWRAP_RRARB_STA0, |
| PWRAP_RRARB_STA1, |
| PWRAP_EVENT_STA, |
| PWRAP_EVENT_STACLR, |
| PWRAP_CIPHER_LOAD, |
| PWRAP_CIPHER_START, |
| |
| /* MT8173 only regs */ |
| PWRAP_RDDMY, |
| PWRAP_SI_CK_CON, |
| PWRAP_DVFS_ADR0, |
| PWRAP_DVFS_WDATA0, |
| PWRAP_DVFS_ADR1, |
| PWRAP_DVFS_WDATA1, |
| PWRAP_DVFS_ADR2, |
| PWRAP_DVFS_WDATA2, |
| PWRAP_DVFS_ADR3, |
| PWRAP_DVFS_WDATA3, |
| PWRAP_DVFS_ADR4, |
| PWRAP_DVFS_WDATA4, |
| PWRAP_DVFS_ADR5, |
| PWRAP_DVFS_WDATA5, |
| PWRAP_DVFS_ADR6, |
| PWRAP_DVFS_WDATA6, |
| PWRAP_DVFS_ADR7, |
| PWRAP_DVFS_WDATA7, |
| PWRAP_SPMINF_STA, |
| PWRAP_CIPHER_EN, |
| }; |
| |
| static int mt8173_regs[] = { |
| [PWRAP_MUX_SEL] = 0x0, |
| [PWRAP_WRAP_EN] = 0x4, |
| [PWRAP_DIO_EN] = 0x8, |
| [PWRAP_SIDLY] = 0xc, |
| [PWRAP_RDDMY] = 0x10, |
| [PWRAP_SI_CK_CON] = 0x14, |
| [PWRAP_CSHEXT_WRITE] = 0x18, |
| [PWRAP_CSHEXT_READ] = 0x1c, |
| [PWRAP_CSLEXT_START] = 0x20, |
| [PWRAP_CSLEXT_END] = 0x24, |
| [PWRAP_STAUPD_PRD] = 0x28, |
| [PWRAP_STAUPD_GRPEN] = 0x2c, |
| [PWRAP_STAUPD_MAN_TRIG] = 0x40, |
| [PWRAP_STAUPD_STA] = 0x44, |
| [PWRAP_WRAP_STA] = 0x48, |
| [PWRAP_HARB_INIT] = 0x4c, |
| [PWRAP_HARB_HPRIO] = 0x50, |
| [PWRAP_HIPRIO_ARB_EN] = 0x54, |
| [PWRAP_HARB_STA0] = 0x58, |
| [PWRAP_HARB_STA1] = 0x5c, |
| [PWRAP_MAN_EN] = 0x60, |
| [PWRAP_MAN_CMD] = 0x64, |
| [PWRAP_MAN_RDATA] = 0x68, |
| [PWRAP_MAN_VLDCLR] = 0x6c, |
| [PWRAP_WACS0_EN] = 0x70, |
| [PWRAP_INIT_DONE0] = 0x74, |
| [PWRAP_WACS0_CMD] = 0x78, |
| [PWRAP_WACS0_RDATA] = 0x7c, |
| [PWRAP_WACS0_VLDCLR] = 0x80, |
| [PWRAP_WACS1_EN] = 0x84, |
| [PWRAP_INIT_DONE1] = 0x88, |
| [PWRAP_WACS1_CMD] = 0x8c, |
| [PWRAP_WACS1_RDATA] = 0x90, |
| [PWRAP_WACS1_VLDCLR] = 0x94, |
| [PWRAP_WACS2_EN] = 0x98, |
| [PWRAP_INIT_DONE2] = 0x9c, |
| [PWRAP_WACS2_CMD] = 0xa0, |
| [PWRAP_WACS2_RDATA] = 0xa4, |
| [PWRAP_WACS2_VLDCLR] = 0xa8, |
| [PWRAP_INT_EN] = 0xac, |
| [PWRAP_INT_FLG_RAW] = 0xb0, |
| [PWRAP_INT_FLG] = 0xb4, |
| [PWRAP_INT_CLR] = 0xb8, |
| [PWRAP_SIG_ADR] = 0xbc, |
| [PWRAP_SIG_MODE] = 0xc0, |
| [PWRAP_SIG_VALUE] = 0xc4, |
| [PWRAP_SIG_ERRVAL] = 0xc8, |
| [PWRAP_CRC_EN] = 0xcc, |
| [PWRAP_TIMER_EN] = 0xd0, |
| [PWRAP_TIMER_STA] = 0xd4, |
| [PWRAP_WDT_UNIT] = 0xd8, |
| [PWRAP_WDT_SRC_EN] = 0xdc, |
| [PWRAP_WDT_FLG] = 0xe0, |
| [PWRAP_DEBUG_INT_SEL] = 0xe4, |
| [PWRAP_DVFS_ADR0] = 0xe8, |
| [PWRAP_DVFS_WDATA0] = 0xec, |
| [PWRAP_DVFS_ADR1] = 0xf0, |
| [PWRAP_DVFS_WDATA1] = 0xf4, |
| [PWRAP_DVFS_ADR2] = 0xf8, |
| [PWRAP_DVFS_WDATA2] = 0xfc, |
| [PWRAP_DVFS_ADR3] = 0x100, |
| [PWRAP_DVFS_WDATA3] = 0x104, |
| [PWRAP_DVFS_ADR4] = 0x108, |
| [PWRAP_DVFS_WDATA4] = 0x10c, |
| [PWRAP_DVFS_ADR5] = 0x110, |
| [PWRAP_DVFS_WDATA5] = 0x114, |
| [PWRAP_DVFS_ADR6] = 0x118, |
| [PWRAP_DVFS_WDATA6] = 0x11c, |
| [PWRAP_DVFS_ADR7] = 0x120, |
| [PWRAP_DVFS_WDATA7] = 0x124, |
| [PWRAP_SPMINF_STA] = 0x128, |
| [PWRAP_CIPHER_KEY_SEL] = 0x12c, |
| [PWRAP_CIPHER_IV_SEL] = 0x130, |
| [PWRAP_CIPHER_EN] = 0x134, |
| [PWRAP_CIPHER_RDY] = 0x138, |
| [PWRAP_CIPHER_MODE] = 0x13c, |
| [PWRAP_CIPHER_SWRST] = 0x140, |
| [PWRAP_DCM_EN] = 0x144, |
| [PWRAP_DCM_DBC_PRD] = 0x148, |
| }; |
| |
| static int mt8135_regs[] = { |
| [PWRAP_MUX_SEL] = 0x0, |
| [PWRAP_WRAP_EN] = 0x4, |
| [PWRAP_DIO_EN] = 0x8, |
| [PWRAP_SIDLY] = 0xc, |
| [PWRAP_CSHEXT] = 0x10, |
| [PWRAP_CSHEXT_WRITE] = 0x14, |
| [PWRAP_CSHEXT_READ] = 0x18, |
| [PWRAP_CSLEXT_START] = 0x1c, |
| [PWRAP_CSLEXT_END] = 0x20, |
| [PWRAP_STAUPD_PRD] = 0x24, |
| [PWRAP_STAUPD_GRPEN] = 0x28, |
| [PWRAP_STAUPD_MAN_TRIG] = 0x2c, |
| [PWRAP_STAUPD_STA] = 0x30, |
| [PWRAP_EVENT_IN_EN] = 0x34, |
| [PWRAP_EVENT_DST_EN] = 0x38, |
| [PWRAP_WRAP_STA] = 0x3c, |
| [PWRAP_RRARB_INIT] = 0x40, |
| [PWRAP_RRARB_EN] = 0x44, |
| [PWRAP_RRARB_STA0] = 0x48, |
| [PWRAP_RRARB_STA1] = 0x4c, |
| [PWRAP_HARB_INIT] = 0x50, |
| [PWRAP_HARB_HPRIO] = 0x54, |
| [PWRAP_HIPRIO_ARB_EN] = 0x58, |
| [PWRAP_HARB_STA0] = 0x5c, |
| [PWRAP_HARB_STA1] = 0x60, |
| [PWRAP_MAN_EN] = 0x64, |
| [PWRAP_MAN_CMD] = 0x68, |
| [PWRAP_MAN_RDATA] = 0x6c, |
| [PWRAP_MAN_VLDCLR] = 0x70, |
| [PWRAP_WACS0_EN] = 0x74, |
| [PWRAP_INIT_DONE0] = 0x78, |
| [PWRAP_WACS0_CMD] = 0x7c, |
| [PWRAP_WACS0_RDATA] = 0x80, |
| [PWRAP_WACS0_VLDCLR] = 0x84, |
| [PWRAP_WACS1_EN] = 0x88, |
| [PWRAP_INIT_DONE1] = 0x8c, |
| [PWRAP_WACS1_CMD] = 0x90, |
| [PWRAP_WACS1_RDATA] = 0x94, |
| [PWRAP_WACS1_VLDCLR] = 0x98, |
| [PWRAP_WACS2_EN] = 0x9c, |
| [PWRAP_INIT_DONE2] = 0xa0, |
| [PWRAP_WACS2_CMD] = 0xa4, |
| [PWRAP_WACS2_RDATA] = 0xa8, |
| [PWRAP_WACS2_VLDCLR] = 0xac, |
| [PWRAP_INT_EN] = 0xb0, |
| [PWRAP_INT_FLG_RAW] = 0xb4, |
| [PWRAP_INT_FLG] = 0xb8, |
| [PWRAP_INT_CLR] = 0xbc, |
| [PWRAP_SIG_ADR] = 0xc0, |
| [PWRAP_SIG_MODE] = 0xc4, |
| [PWRAP_SIG_VALUE] = 0xc8, |
| [PWRAP_SIG_ERRVAL] = 0xcc, |
| [PWRAP_CRC_EN] = 0xd0, |
| [PWRAP_EVENT_STA] = 0xd4, |
| [PWRAP_EVENT_STACLR] = 0xd8, |
| [PWRAP_TIMER_EN] = 0xdc, |
| [PWRAP_TIMER_STA] = 0xe0, |
| [PWRAP_WDT_UNIT] = 0xe4, |
| [PWRAP_WDT_SRC_EN] = 0xe8, |
| [PWRAP_WDT_FLG] = 0xec, |
| [PWRAP_DEBUG_INT_SEL] = 0xf0, |
| [PWRAP_CIPHER_KEY_SEL] = 0x134, |
| [PWRAP_CIPHER_IV_SEL] = 0x138, |
| [PWRAP_CIPHER_LOAD] = 0x13c, |
| [PWRAP_CIPHER_START] = 0x140, |
| [PWRAP_CIPHER_RDY] = 0x144, |
| [PWRAP_CIPHER_MODE] = 0x148, |
| [PWRAP_CIPHER_SWRST] = 0x14c, |
| [PWRAP_DCM_EN] = 0x15c, |
| [PWRAP_DCM_DBC_PRD] = 0x160, |
| }; |
| |
| enum pwrap_type { |
| PWRAP_MT8135, |
| PWRAP_MT8173, |
| }; |
| |
| struct pmic_wrapper_type { |
| int *regs; |
| enum pwrap_type type; |
| u32 arb_en_all; |
| }; |
| |
| static struct pmic_wrapper_type pwrap_mt8135 = { |
| .regs = mt8135_regs, |
| .type = PWRAP_MT8135, |
| .arb_en_all = 0x1ff, |
| }; |
| |
| static struct pmic_wrapper_type pwrap_mt8173 = { |
| .regs = mt8173_regs, |
| .type = PWRAP_MT8173, |
| .arb_en_all = 0x3f, |
| }; |
| |
| struct pmic_wrapper { |
| struct device *dev; |
| void __iomem *base; |
| struct regmap *regmap; |
| int *regs; |
| enum pwrap_type type; |
| u32 arb_en_all; |
| struct clk *clk_spi; |
| struct clk *clk_wrap; |
| struct reset_control *rstc; |
| |
| struct reset_control *rstc_bridge; |
| void __iomem *bridge_base; |
| }; |
| |
| static inline int pwrap_is_mt8135(struct pmic_wrapper *wrp) |
| { |
| return wrp->type == PWRAP_MT8135; |
| } |
| |
| static inline int pwrap_is_mt8173(struct pmic_wrapper *wrp) |
| { |
| return wrp->type == PWRAP_MT8173; |
| } |
| |
| static u32 pwrap_readl(struct pmic_wrapper *wrp, enum pwrap_regs reg) |
| { |
| return readl(wrp->base + wrp->regs[reg]); |
| } |
| |
| static void pwrap_writel(struct pmic_wrapper *wrp, u32 val, enum pwrap_regs reg) |
| { |
| writel(val, wrp->base + wrp->regs[reg]); |
| } |
| |
| static bool pwrap_is_fsm_idle(struct pmic_wrapper *wrp) |
| { |
| u32 val = pwrap_readl(wrp, PWRAP_WACS2_RDATA); |
| |
| return PWRAP_GET_WACS_FSM(val) == PWRAP_WACS_FSM_IDLE; |
| } |
| |
| static bool pwrap_is_fsm_vldclr(struct pmic_wrapper *wrp) |
| { |
| u32 val = pwrap_readl(wrp, PWRAP_WACS2_RDATA); |
| |
| return PWRAP_GET_WACS_FSM(val) == PWRAP_WACS_FSM_WFVLDCLR; |
| } |
| |
| static bool pwrap_is_sync_idle(struct pmic_wrapper *wrp) |
| { |
| return pwrap_readl(wrp, PWRAP_WACS2_RDATA) & PWRAP_STATE_SYNC_IDLE0; |
| } |
| |
| static bool pwrap_is_fsm_idle_and_sync_idle(struct pmic_wrapper *wrp) |
| { |
| u32 val = pwrap_readl(wrp, PWRAP_WACS2_RDATA); |
| |
| return (PWRAP_GET_WACS_FSM(val) == PWRAP_WACS_FSM_IDLE) && |
| (val & PWRAP_STATE_SYNC_IDLE0); |
| } |
| |
| static int pwrap_wait_for_state(struct pmic_wrapper *wrp, |
| bool (*fp)(struct pmic_wrapper *)) |
| { |
| unsigned long timeout; |
| |
| timeout = jiffies + usecs_to_jiffies(255); |
| |
| do { |
| if (time_after(jiffies, timeout)) |
| return fp(wrp) ? 0 : -ETIMEDOUT; |
| if (fp(wrp)) |
| return 0; |
| } while (1); |
| } |
| |
| static int pwrap_write(struct pmic_wrapper *wrp, u32 adr, u32 wdata) |
| { |
| int ret; |
| |
| ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle); |
| if (ret) |
| return ret; |
| |
| pwrap_writel(wrp, (1 << 31) | ((adr >> 1) << 16) | wdata, |
| PWRAP_WACS2_CMD); |
| |
| return 0; |
| } |
| |
| static int pwrap_read(struct pmic_wrapper *wrp, u32 adr, u32 *rdata) |
| { |
| int ret; |
| |
| ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle); |
| if (ret) |
| return ret; |
| |
| pwrap_writel(wrp, (adr >> 1) << 16, PWRAP_WACS2_CMD); |
| |
| ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_vldclr); |
| if (ret) |
| return ret; |
| |
| *rdata = PWRAP_GET_WACS_RDATA(pwrap_readl(wrp, PWRAP_WACS2_RDATA)); |
| |
| pwrap_writel(wrp, 1, PWRAP_WACS2_VLDCLR); |
| |
| return 0; |
| } |
| |
| static int pwrap_regmap_read(void *context, u32 adr, u32 *rdata) |
| { |
| return pwrap_read(context, adr, rdata); |
| } |
| |
| static int pwrap_regmap_write(void *context, u32 adr, u32 wdata) |
| { |
| return pwrap_write(context, adr, wdata); |
| } |
| |
| static int pwrap_reset_spislave(struct pmic_wrapper *wrp) |
| { |
| int ret, i; |
| |
| pwrap_writel(wrp, 0, PWRAP_HIPRIO_ARB_EN); |
| pwrap_writel(wrp, 0, PWRAP_WRAP_EN); |
| pwrap_writel(wrp, 1, PWRAP_MUX_SEL); |
| pwrap_writel(wrp, 1, PWRAP_MAN_EN); |
| pwrap_writel(wrp, 0, PWRAP_DIO_EN); |
| |
| pwrap_writel(wrp, PWRAP_MAN_CMD_SPI_WRITE | PWRAP_MAN_CMD_OP_CSL, |
| PWRAP_MAN_CMD); |
| pwrap_writel(wrp, PWRAP_MAN_CMD_SPI_WRITE | PWRAP_MAN_CMD_OP_OUTS, |
| PWRAP_MAN_CMD); |
| pwrap_writel(wrp, PWRAP_MAN_CMD_SPI_WRITE | PWRAP_MAN_CMD_OP_CSH, |
| PWRAP_MAN_CMD); |
| |
| for (i = 0; i < 4; i++) |
| pwrap_writel(wrp, PWRAP_MAN_CMD_SPI_WRITE | PWRAP_MAN_CMD_OP_OUTS, |
| PWRAP_MAN_CMD); |
| |
| ret = pwrap_wait_for_state(wrp, pwrap_is_sync_idle); |
| if (ret) { |
| dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret); |
| return ret; |
| } |
| |
| pwrap_writel(wrp, 0, PWRAP_MAN_EN); |
| pwrap_writel(wrp, 0, PWRAP_MUX_SEL); |
| |
| return 0; |
| } |
| |
| /* |
| * pwrap_init_sidly - configure serial input delay |
| * |
| * This configures the serial input delay. We can configure 0, 2, 4 or 6ns |
| * delay. Do a read test with all possible values and chose the best delay. |
| */ |
| static int pwrap_init_sidly(struct pmic_wrapper *wrp) |
| { |
| u32 rdata; |
| u32 i; |
| u32 pass = 0; |
| signed char dly[16] = { |
| -1, 0, 1, 0, 2, -1, 1, 1, 3, -1, -1, -1, 3, -1, 2, 1 |
| }; |
| |
| for (i = 0; i < 4; i++) { |
| pwrap_writel(wrp, i, PWRAP_SIDLY); |
| pwrap_read(wrp, PWRAP_DEW_READ_TEST, &rdata); |
| if (rdata == PWRAP_DEW_READ_TEST_VAL) { |
| dev_dbg(wrp->dev, "[Read Test] pass, SIDLY=%x\n", i); |
| pass |= 1 << i; |
| } |
| } |
| |
| if (dly[pass] < 0) { |
| dev_err(wrp->dev, "sidly pass range 0x%x not continuous\n", |
| pass); |
| return -EIO; |
| } |
| |
| pwrap_writel(wrp, dly[pass], PWRAP_SIDLY); |
| |
| return 0; |
| } |
| |
| static int pwrap_init_reg_clock(struct pmic_wrapper *wrp) |
| { |
| if (pwrap_is_mt8135(wrp)) { |
| pwrap_writel(wrp, 0x4, PWRAP_CSHEXT); |
| pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_WRITE); |
| pwrap_writel(wrp, 0x4, PWRAP_CSHEXT_READ); |
| pwrap_writel(wrp, 0x0, PWRAP_CSLEXT_START); |
| pwrap_writel(wrp, 0x0, PWRAP_CSLEXT_END); |
| } else { |
| pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_WRITE); |
| pwrap_writel(wrp, 0x4, PWRAP_CSHEXT_READ); |
| pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_START); |
| pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_END); |
| } |
| |
| return 0; |
| } |
| |
| static bool pwrap_is_cipher_ready(struct pmic_wrapper *wrp) |
| { |
| return pwrap_readl(wrp, PWRAP_CIPHER_RDY) & 1; |
| } |
| |
| static bool pwrap_is_pmic_cipher_ready(struct pmic_wrapper *wrp) |
| { |
| u32 rdata; |
| int ret; |
| |
| ret = pwrap_read(wrp, PWRAP_DEW_CIPHER_RDY, &rdata); |
| if (ret) |
| return 0; |
| |
| return rdata == 1; |
| } |
| |
| static int pwrap_init_cipher(struct pmic_wrapper *wrp) |
| { |
| int ret; |
| u32 rdata; |
| |
| pwrap_writel(wrp, 0x1, PWRAP_CIPHER_SWRST); |
| pwrap_writel(wrp, 0x0, PWRAP_CIPHER_SWRST); |
| pwrap_writel(wrp, 0x1, PWRAP_CIPHER_KEY_SEL); |
| pwrap_writel(wrp, 0x2, PWRAP_CIPHER_IV_SEL); |
| |
| if (pwrap_is_mt8135(wrp)) { |
| pwrap_writel(wrp, 1, PWRAP_CIPHER_LOAD); |
| pwrap_writel(wrp, 1, PWRAP_CIPHER_START); |
| } else { |
| pwrap_writel(wrp, 1, PWRAP_CIPHER_EN); |
| } |
| |
| /* Config cipher mode @PMIC */ |
| pwrap_write(wrp, PWRAP_DEW_CIPHER_SWRST, 0x1); |
| pwrap_write(wrp, PWRAP_DEW_CIPHER_SWRST, 0x0); |
| pwrap_write(wrp, PWRAP_DEW_CIPHER_KEY_SEL, 0x1); |
| pwrap_write(wrp, PWRAP_DEW_CIPHER_IV_SEL, 0x2); |
| pwrap_write(wrp, PWRAP_DEW_CIPHER_LOAD, 0x1); |
| pwrap_write(wrp, PWRAP_DEW_CIPHER_START, 0x1); |
| |
| /* wait for cipher data ready@AP */ |
| ret = pwrap_wait_for_state(wrp, pwrap_is_cipher_ready); |
| if (ret) { |
| dev_err(wrp->dev, "cipher data ready@AP fail, ret=%d\n", ret); |
| return ret; |
| } |
| |
| /* wait for cipher data ready@PMIC */ |
| ret = pwrap_wait_for_state(wrp, pwrap_is_pmic_cipher_ready); |
| if (ret) { |
| dev_err(wrp->dev, "timeout waiting for cipher data ready@PMIC\n"); |
| return ret; |
| } |
| |
| /* wait for cipher mode idle */ |
| pwrap_write(wrp, PWRAP_DEW_CIPHER_MODE, 0x1); |
| ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle_and_sync_idle); |
| if (ret) { |
| dev_err(wrp->dev, "cipher mode idle fail, ret=%d\n", ret); |
| return ret; |
| } |
| |
| pwrap_writel(wrp, 1, PWRAP_CIPHER_MODE); |
| |
| /* Write Test */ |
| if (pwrap_write(wrp, PWRAP_DEW_WRITE_TEST, PWRAP_DEW_WRITE_TEST_VAL) || |
| pwrap_read(wrp, PWRAP_DEW_WRITE_TEST, &rdata) || |
| (rdata != PWRAP_DEW_WRITE_TEST_VAL)) { |
| dev_err(wrp->dev, "rdata=0x%04X\n", rdata); |
| return -EFAULT; |
| } |
| |
| return 0; |
| } |
| |
| static int pwrap_init(struct pmic_wrapper *wrp) |
| { |
| int ret; |
| u32 rdata; |
| |
| reset_control_reset(wrp->rstc); |
| if (wrp->rstc_bridge) |
| reset_control_reset(wrp->rstc_bridge); |
| |
| if (pwrap_is_mt8173(wrp)) { |
| /* Enable DCM */ |
| pwrap_writel(wrp, 3, PWRAP_DCM_EN); |
| pwrap_writel(wrp, 0, PWRAP_DCM_DBC_PRD); |
| } |
| |
| /* Reset SPI slave */ |
| ret = pwrap_reset_spislave(wrp); |
| if (ret) |
| return ret; |
| |
| pwrap_writel(wrp, 1, PWRAP_WRAP_EN); |
| |
| pwrap_writel(wrp, wrp->arb_en_all, PWRAP_HIPRIO_ARB_EN); |
| |
| pwrap_writel(wrp, 1, PWRAP_WACS2_EN); |
| |
| ret = pwrap_init_reg_clock(wrp); |
| if (ret) |
| return ret; |
| |
| /* Setup serial input delay */ |
| ret = pwrap_init_sidly(wrp); |
| if (ret) |
| return ret; |
| |
| /* Enable dual IO mode */ |
| pwrap_write(wrp, PWRAP_DEW_DIO_EN, 1); |
| |
| /* Check IDLE & INIT_DONE in advance */ |
| ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle_and_sync_idle); |
| if (ret) { |
| dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret); |
| return ret; |
| } |
| |
| pwrap_writel(wrp, 1, PWRAP_DIO_EN); |
| |
| /* Read Test */ |
| pwrap_read(wrp, PWRAP_DEW_READ_TEST, &rdata); |
| if (rdata != PWRAP_DEW_READ_TEST_VAL) { |
| dev_err(wrp->dev, "Read test failed after switch to DIO mode: 0x%04x != 0x%04x\n", |
| PWRAP_DEW_READ_TEST_VAL, rdata); |
| return -EFAULT; |
| } |
| |
| /* Enable encryption */ |
| ret = pwrap_init_cipher(wrp); |
| if (ret) |
| return ret; |
| |
| /* Signature checking - using CRC */ |
| if (pwrap_write(wrp, PWRAP_DEW_CRC_EN, 0x1)) |
| return -EFAULT; |
| |
| pwrap_writel(wrp, 0x1, PWRAP_CRC_EN); |
| pwrap_writel(wrp, 0x0, PWRAP_SIG_MODE); |
| pwrap_writel(wrp, PWRAP_DEW_CRC_VAL, PWRAP_SIG_ADR); |
| pwrap_writel(wrp, wrp->arb_en_all, PWRAP_HIPRIO_ARB_EN); |
| |
| if (pwrap_is_mt8135(wrp)) |
| pwrap_writel(wrp, 0x7, PWRAP_RRARB_EN); |
| |
| pwrap_writel(wrp, 0x1, PWRAP_WACS0_EN); |
| pwrap_writel(wrp, 0x1, PWRAP_WACS1_EN); |
| pwrap_writel(wrp, 0x1, PWRAP_WACS2_EN); |
| pwrap_writel(wrp, 0x5, PWRAP_STAUPD_PRD); |
| pwrap_writel(wrp, 0xff, PWRAP_STAUPD_GRPEN); |
| pwrap_writel(wrp, 0xf, PWRAP_WDT_UNIT); |
| pwrap_writel(wrp, 0xffffffff, PWRAP_WDT_SRC_EN); |
| pwrap_writel(wrp, 0x1, PWRAP_TIMER_EN); |
| pwrap_writel(wrp, ~((1 << 31) | (1 << 1)), PWRAP_INT_EN); |
| |
| if (pwrap_is_mt8135(wrp)) { |
| /* enable pwrap events and pwrap bridge in AP side */ |
| pwrap_writel(wrp, 0x1, PWRAP_EVENT_IN_EN); |
| pwrap_writel(wrp, 0xffff, PWRAP_EVENT_DST_EN); |
| writel(0x7f, wrp->bridge_base + PWRAP_MT8135_BRIDGE_IORD_ARB_EN); |
| writel(0x1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_WACS3_EN); |
| writel(0x1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_WACS4_EN); |
| writel(0x1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_WDT_UNIT); |
| writel(0xffff, wrp->bridge_base + PWRAP_MT8135_BRIDGE_WDT_SRC_EN); |
| writel(0x1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_TIMER_EN); |
| writel(0x7ff, wrp->bridge_base + PWRAP_MT8135_BRIDGE_INT_EN); |
| |
| /* enable PMIC event out and sources */ |
| if (pwrap_write(wrp, PWRAP_DEW_EVENT_OUT_EN, 0x1) || |
| pwrap_write(wrp, PWRAP_DEW_EVENT_SRC_EN, 0xffff)) { |
| dev_err(wrp->dev, "enable dewrap fail\n"); |
| return -EFAULT; |
| } |
| } else { |
| /* PMIC_DEWRAP enables */ |
| if (pwrap_write(wrp, PWRAP_DEW_EVENT_OUT_EN, 0x1) || |
| pwrap_write(wrp, PWRAP_DEW_EVENT_SRC_EN, 0xffff)) { |
| dev_err(wrp->dev, "enable dewrap fail\n"); |
| return -EFAULT; |
| } |
| } |
| |
| /* Setup the init done registers */ |
| pwrap_writel(wrp, 1, PWRAP_INIT_DONE2); |
| pwrap_writel(wrp, 1, PWRAP_INIT_DONE0); |
| pwrap_writel(wrp, 1, PWRAP_INIT_DONE1); |
| |
| if (pwrap_is_mt8135(wrp)) { |
| writel(1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_INIT_DONE3); |
| writel(1, wrp->bridge_base + PWRAP_MT8135_BRIDGE_INIT_DONE4); |
| } |
| |
| return 0; |
| } |
| |
| static irqreturn_t pwrap_interrupt(int irqno, void *dev_id) |
| { |
| u32 rdata; |
| struct pmic_wrapper *wrp = dev_id; |
| |
| rdata = pwrap_readl(wrp, PWRAP_INT_FLG); |
| |
| dev_err(wrp->dev, "unexpected interrupt int=0x%x\n", rdata); |
| |
| pwrap_writel(wrp, 0xffffffff, PWRAP_INT_CLR); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static const struct regmap_config pwrap_regmap_config = { |
| .reg_bits = 16, |
| .val_bits = 16, |
| .reg_stride = 2, |
| .reg_read = pwrap_regmap_read, |
| .reg_write = pwrap_regmap_write, |
| .max_register = 0xffff, |
| }; |
| |
| static struct of_device_id of_pwrap_match_tbl[] = { |
| { |
| .compatible = "mediatek,mt8135-pwrap", |
| .data = &pwrap_mt8135, |
| }, { |
| .compatible = "mediatek,mt8173-pwrap", |
| .data = &pwrap_mt8173, |
| }, { |
| /* sentinel */ |
| } |
| }; |
| MODULE_DEVICE_TABLE(of, of_pwrap_match_tbl); |
| |
| static int pwrap_probe(struct platform_device *pdev) |
| { |
| int ret, irq; |
| struct pmic_wrapper *wrp; |
| struct device_node *np = pdev->dev.of_node; |
| const struct of_device_id *of_id = |
| of_match_device(of_pwrap_match_tbl, &pdev->dev); |
| const struct pmic_wrapper_type *type; |
| struct resource *res; |
| |
| wrp = devm_kzalloc(&pdev->dev, sizeof(*wrp), GFP_KERNEL); |
| if (!wrp) |
| return -ENOMEM; |
| |
| platform_set_drvdata(pdev, wrp); |
| |
| type = of_id->data; |
| wrp->regs = type->regs; |
| wrp->type = type->type; |
| wrp->arb_en_all = type->arb_en_all; |
| wrp->dev = &pdev->dev; |
| |
| res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pwrap"); |
| wrp->base = devm_ioremap_resource(wrp->dev, res); |
| if (IS_ERR(wrp->base)) |
| return PTR_ERR(wrp->base); |
| |
| wrp->rstc = devm_reset_control_get(wrp->dev, "pwrap"); |
| if (IS_ERR(wrp->rstc)) { |
| ret = PTR_ERR(wrp->rstc); |
| dev_dbg(wrp->dev, "cannot get pwrap reset: %d\n", ret); |
| return ret; |
| } |
| |
| if (pwrap_is_mt8135(wrp)) { |
| res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| "pwrap-bridge"); |
| wrp->bridge_base = devm_ioremap_resource(wrp->dev, res); |
| if (IS_ERR(wrp->bridge_base)) |
| return PTR_ERR(wrp->bridge_base); |
| |
| wrp->rstc_bridge = devm_reset_control_get(wrp->dev, "pwrap-bridge"); |
| if (IS_ERR(wrp->rstc_bridge)) { |
| ret = PTR_ERR(wrp->rstc_bridge); |
| dev_dbg(wrp->dev, "cannot get pwrap-bridge reset: %d\n", ret); |
| return ret; |
| } |
| } |
| |
| wrp->clk_spi = devm_clk_get(wrp->dev, "spi"); |
| if (IS_ERR(wrp->clk_spi)) { |
| dev_dbg(wrp->dev, "failed to get clock: %ld\n", PTR_ERR(wrp->clk_spi)); |
| return PTR_ERR(wrp->clk_spi); |
| } |
| |
| wrp->clk_wrap = devm_clk_get(wrp->dev, "wrap"); |
| if (IS_ERR(wrp->clk_wrap)) { |
| dev_dbg(wrp->dev, "failed to get clock: %ld\n", PTR_ERR(wrp->clk_wrap)); |
| return PTR_ERR(wrp->clk_wrap); |
| } |
| |
| ret = clk_prepare_enable(wrp->clk_spi); |
| if (ret) |
| return ret; |
| |
| ret = clk_prepare_enable(wrp->clk_wrap); |
| if (ret) |
| goto err_out1; |
| |
| /* Enable internal dynamic clock */ |
| pwrap_writel(wrp, 1, PWRAP_DCM_EN); |
| pwrap_writel(wrp, 0, PWRAP_DCM_DBC_PRD); |
| |
| /* |
| * The PMIC could already be initialized by the bootloader. |
| * Skip initialization here in this case. |
| */ |
| if (!pwrap_readl(wrp, PWRAP_INIT_DONE2)) { |
| ret = pwrap_init(wrp); |
| if (ret) { |
| dev_dbg(wrp->dev, "init failed with %d\n", ret); |
| goto err_out2; |
| } |
| } |
| |
| if (!(pwrap_readl(wrp, PWRAP_WACS2_RDATA) & PWRAP_STATE_INIT_DONE0)) { |
| dev_dbg(wrp->dev, "initialization isn't finished\n"); |
| return -ENODEV; |
| } |
| |
| irq = platform_get_irq(pdev, 0); |
| ret = devm_request_irq(wrp->dev, irq, pwrap_interrupt, IRQF_TRIGGER_HIGH, |
| "mt-pmic-pwrap", wrp); |
| if (ret) |
| goto err_out2; |
| |
| wrp->regmap = devm_regmap_init(wrp->dev, NULL, wrp, &pwrap_regmap_config); |
| if (IS_ERR(wrp->regmap)) |
| return PTR_ERR(wrp->regmap); |
| |
| ret = of_platform_populate(np, NULL, NULL, wrp->dev); |
| if (ret) { |
| dev_dbg(wrp->dev, "failed to create child devices at %s\n", |
| np->full_name); |
| goto err_out2; |
| } |
| |
| return 0; |
| |
| err_out2: |
| clk_disable_unprepare(wrp->clk_wrap); |
| err_out1: |
| clk_disable_unprepare(wrp->clk_spi); |
| |
| return ret; |
| } |
| |
| static struct platform_driver pwrap_drv = { |
| .driver = { |
| .name = "mt-pmic-pwrap", |
| .owner = THIS_MODULE, |
| .of_match_table = of_match_ptr(of_pwrap_match_tbl), |
| }, |
| .probe = pwrap_probe, |
| }; |
| |
| module_platform_driver(pwrap_drv); |
| |
| MODULE_AUTHOR("Flora Fu, MediaTek"); |
| MODULE_DESCRIPTION("MediaTek MT8135 PMIC Wrapper Driver"); |
| MODULE_LICENSE("GPL v2"); |