/* * Copyright (C) 2013 STMicroelectronics (R&D) Limited * Author: Stephen Gallimore * Author: Srinivas Kandagatla * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include #include #include #include #include #include "reset-syscfg.h" /* * STiH416 Peripheral powerdown definitions. */ static const char stih416_front[] = "st,stih416-front-syscfg"; static const char stih416_rear[] = "st,stih416-rear-syscfg"; static const char stih416_sbc[] = "st,stih416-sbc-syscfg"; static const char stih416_lpm[] = "st,stih416-lpm-syscfg"; static const char stih416_cpu[] = "st,stih416-cpu-syscfg"; #define STIH416_PDN_FRONT(_bit) \ _SYSCFG_RST_CH(stih416_front, SYSCFG_1500, _bit, SYSSTAT_1578, _bit) #define STIH416_PDN_REAR(_cntl, _stat) \ _SYSCFG_RST_CH(stih416_rear, SYSCFG_2525, _cntl, SYSSTAT_2583, _stat) #define SYSCFG_1500 0x7d0 /* Powerdown request EMI/NAND/Keyscan */ #define SYSSTAT_1578 0x908 /* Powerdown status EMI/NAND/Keyscan */ #define SYSCFG_2525 0x834 /* Powerdown request USB/SATA/PCIe */ #define SYSSTAT_2583 0x91c /* Powerdown status USB/SATA/PCIe */ #define SYSCFG_2552 0x8A0 /* Reset Generator control 0 */ #define SYSCFG_1539 0x86c /* Softreset Ethernet 0 */ #define SYSCFG_510 0x7f8 /* Softreset Ethernet 1 */ #define LPM_SYSCFG_1 0x4 /* Softreset IRB */ #define SYSCFG_2553 0x8a4 /* Softreset SATA0/1, PCIE0/1 */ #define SYSCFG_7563 0x8cc /* MPE softresets 0 */ #define SYSCFG_7564 0x8d0 /* MPE softresets 1 */ #define STIH416_SRST_CPU(_reg, _bit) \ _SYSCFG_RST_CH_NO_ACK(stih416_cpu, _reg, _bit) #define STIH416_SRST_FRONT(_reg, _bit) \ _SYSCFG_RST_CH_NO_ACK(stih416_front, _reg, _bit) #define STIH416_SRST_REAR(_reg, _bit) \ _SYSCFG_RST_CH_NO_ACK(stih416_rear, _reg, _bit) #define STIH416_SRST_LPM(_reg, _bit) \ _SYSCFG_RST_CH_NO_ACK(stih416_lpm, _reg, _bit) #define STIH416_SRST_SBC(_reg, _bit) \ _SYSCFG_RST_CH_NO_ACK(stih416_sbc, _reg, _bit) static const struct syscfg_reset_channel_data stih416_powerdowns[] = { [STIH416_EMISS_POWERDOWN] = STIH416_PDN_FRONT(0), [STIH416_NAND_POWERDOWN] = STIH416_PDN_FRONT(1), [STIH416_KEYSCAN_POWERDOWN] = STIH416_PDN_FRONT(2), [STIH416_USB0_POWERDOWN] = STIH416_PDN_REAR(0, 0), [STIH416_USB1_POWERDOWN] = STIH416_PDN_REAR(1, 1), [STIH416_USB2_POWERDOWN] = STIH416_PDN_REAR(2, 2), [STIH416_USB3_POWERDOWN] = STIH416_PDN_REAR(6, 5), [STIH416_SATA0_POWERDOWN] = STIH416_PDN_REAR(3, 3), [STIH416_SATA1_POWERDOWN] = STIH416_PDN_REAR(4, 4), [STIH416_PCIE0_POWERDOWN] = STIH416_PDN_REAR(7, 9), [STIH416_PCIE1_POWERDOWN] = STIH416_PDN_REAR(5, 8), }; static const struct syscfg_reset_channel_data stih416_softresets[] = { [STIH416_ETH0_SOFTRESET] = STIH416_SRST_FRONT(SYSCFG_1539, 0), [STIH416_ETH1_SOFTRESET] = STIH416_SRST_SBC(SYSCFG_510, 0), [STIH416_IRB_SOFTRESET] = STIH416_SRST_LPM(LPM_SYSCFG_1, 6), [STIH416_USB0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 9), [STIH416_USB1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 10), [STIH416_USB2_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 11), [STIH416_USB3_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 28), [STIH416_SATA0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 7), [STIH416_SATA1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 3), [STIH416_PCIE0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 15), [STIH416_PCIE1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 2), [STIH416_AUD_DAC_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 14), [STIH416_HDTVOUT_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 5), [STIH416_VTAC_M_RX_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 25), [STIH416_VTAC_A_RX_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 26), [STIH416_SYNC_HD_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 5), [STIH416_SYNC_SD_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 6), [STIH416_BLITTER_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 10), [STIH416_GPU_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 11), [STIH416_VTAC_M_TX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 18), [STIH416_VTAC_A_TX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 19), [STIH416_VTG_AUX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 21), [STIH416_JPEG_DEC_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 23), [STIH416_HVA_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 2), [STIH416_COMPO_M_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 3), [STIH416_COMPO_A_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 4), [STIH416_VP8_DEC_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 10), [STIH416_VTG_MAIN_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 16), [STIH416_KEYSCAN_SOFTRESET] = STIH416_SRST_LPM(LPM_SYSCFG_1, 8), }; static struct syscfg_reset_controller_data stih416_powerdown_controller = { .wait_for_ack = true, .nr_channels = ARRAY_SIZE(stih416_powerdowns), .channels = stih416_powerdowns, }; static struct syscfg_reset_controller_data stih416_softreset_controller = { .wait_for_ack = false, .active_low = true, .nr_channels = ARRAY_SIZE(stih416_softresets), .channels = stih416_softresets, }; static struct of_device_id stih416_reset_match[] = { { .compatible = "st,stih416-powerdown", .data = &stih416_powerdown_controller, }, { .compatible = "st,stih416-softreset", .data = &stih416_softreset_controller, }, {}, }; static struct platform_driver stih416_reset_driver = { .probe = syscfg_reset_probe, .driver = { .name = "reset-stih416", .of_match_table = stih416_reset_match, }, }; static int __init stih416_reset_init(void) { return platform_driver_register(&stih416_reset_driver); } arch_initcall(stih416_reset_init);