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