Stephen Gallimore | d0ace0f | 2013-08-07 16:57:26 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 STMicroelectronics (R&D) Limited |
| 3 | * Author: Stephen Gallimore <stephen.gallimore@st.com> |
| 4 | * Author: Srinivas Kandagatla <srinivas.kandagatla@st.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | */ |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/of.h> |
| 13 | #include <linux/of_platform.h> |
| 14 | #include <linux/platform_device.h> |
| 15 | |
| 16 | #include <dt-bindings/reset-controller/stih416-resets.h> |
| 17 | |
| 18 | #include "reset-syscfg.h" |
| 19 | |
| 20 | /* |
| 21 | * STiH416 Peripheral powerdown definitions. |
| 22 | */ |
| 23 | static const char stih416_front[] = "st,stih416-front-syscfg"; |
| 24 | static const char stih416_rear[] = "st,stih416-rear-syscfg"; |
| 25 | static const char stih416_sbc[] = "st,stih416-sbc-syscfg"; |
| 26 | static const char stih416_lpm[] = "st,stih416-lpm-syscfg"; |
Srinivas Kandagatla | e9de663 | 2013-11-12 10:28:03 +0000 | [diff] [blame] | 27 | static const char stih416_cpu[] = "st,stih416-cpu-syscfg"; |
Stephen Gallimore | d0ace0f | 2013-08-07 16:57:26 +0100 | [diff] [blame] | 28 | |
| 29 | #define STIH416_PDN_FRONT(_bit) \ |
| 30 | _SYSCFG_RST_CH(stih416_front, SYSCFG_1500, _bit, SYSSTAT_1578, _bit) |
| 31 | |
| 32 | #define STIH416_PDN_REAR(_cntl, _stat) \ |
| 33 | _SYSCFG_RST_CH(stih416_rear, SYSCFG_2525, _cntl, SYSSTAT_2583, _stat) |
| 34 | |
| 35 | #define SYSCFG_1500 0x7d0 /* Powerdown request EMI/NAND/Keyscan */ |
| 36 | #define SYSSTAT_1578 0x908 /* Powerdown status EMI/NAND/Keyscan */ |
| 37 | |
| 38 | #define SYSCFG_2525 0x834 /* Powerdown request USB/SATA/PCIe */ |
| 39 | #define SYSSTAT_2583 0x91c /* Powerdown status USB/SATA/PCIe */ |
| 40 | |
Srinivas Kandagatla | e9de663 | 2013-11-12 10:28:03 +0000 | [diff] [blame] | 41 | #define SYSCFG_2552 0x8A0 /* Reset Generator control 0 */ |
| 42 | #define SYSCFG_1539 0x86c /* Softreset Ethernet 0 */ |
| 43 | #define SYSCFG_510 0x7f8 /* Softreset Ethernet 1 */ |
| 44 | #define LPM_SYSCFG_1 0x4 /* Softreset IRB */ |
| 45 | #define SYSCFG_2553 0x8a4 /* Softreset SATA0/1, PCIE0/1 */ |
| 46 | #define SYSCFG_7563 0x8cc /* MPE softresets 0 */ |
| 47 | #define SYSCFG_7564 0x8d0 /* MPE softresets 1 */ |
| 48 | |
| 49 | #define STIH416_SRST_CPU(_reg, _bit) \ |
| 50 | _SYSCFG_RST_CH_NO_ACK(stih416_cpu, _reg, _bit) |
| 51 | |
| 52 | #define STIH416_SRST_FRONT(_reg, _bit) \ |
| 53 | _SYSCFG_RST_CH_NO_ACK(stih416_front, _reg, _bit) |
| 54 | |
| 55 | #define STIH416_SRST_REAR(_reg, _bit) \ |
| 56 | _SYSCFG_RST_CH_NO_ACK(stih416_rear, _reg, _bit) |
| 57 | |
| 58 | #define STIH416_SRST_LPM(_reg, _bit) \ |
| 59 | _SYSCFG_RST_CH_NO_ACK(stih416_lpm, _reg, _bit) |
| 60 | |
| 61 | #define STIH416_SRST_SBC(_reg, _bit) \ |
| 62 | _SYSCFG_RST_CH_NO_ACK(stih416_sbc, _reg, _bit) |
| 63 | |
Stephen Gallimore | d0ace0f | 2013-08-07 16:57:26 +0100 | [diff] [blame] | 64 | static const struct syscfg_reset_channel_data stih416_powerdowns[] = { |
| 65 | [STIH416_EMISS_POWERDOWN] = STIH416_PDN_FRONT(0), |
| 66 | [STIH416_NAND_POWERDOWN] = STIH416_PDN_FRONT(1), |
| 67 | [STIH416_KEYSCAN_POWERDOWN] = STIH416_PDN_FRONT(2), |
| 68 | [STIH416_USB0_POWERDOWN] = STIH416_PDN_REAR(0, 0), |
| 69 | [STIH416_USB1_POWERDOWN] = STIH416_PDN_REAR(1, 1), |
| 70 | [STIH416_USB2_POWERDOWN] = STIH416_PDN_REAR(2, 2), |
| 71 | [STIH416_USB3_POWERDOWN] = STIH416_PDN_REAR(6, 5), |
| 72 | [STIH416_SATA0_POWERDOWN] = STIH416_PDN_REAR(3, 3), |
| 73 | [STIH416_SATA1_POWERDOWN] = STIH416_PDN_REAR(4, 4), |
| 74 | [STIH416_PCIE0_POWERDOWN] = STIH416_PDN_REAR(7, 9), |
| 75 | [STIH416_PCIE1_POWERDOWN] = STIH416_PDN_REAR(5, 8), |
| 76 | }; |
| 77 | |
Srinivas Kandagatla | e9de663 | 2013-11-12 10:28:03 +0000 | [diff] [blame] | 78 | static const struct syscfg_reset_channel_data stih416_softresets[] = { |
| 79 | [STIH416_ETH0_SOFTRESET] = STIH416_SRST_FRONT(SYSCFG_1539, 0), |
| 80 | [STIH416_ETH1_SOFTRESET] = STIH416_SRST_SBC(SYSCFG_510, 0), |
| 81 | [STIH416_IRB_SOFTRESET] = STIH416_SRST_LPM(LPM_SYSCFG_1, 6), |
| 82 | [STIH416_USB0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 9), |
| 83 | [STIH416_USB1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 10), |
| 84 | [STIH416_USB2_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 11), |
| 85 | [STIH416_USB3_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 28), |
| 86 | [STIH416_SATA0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 7), |
| 87 | [STIH416_SATA1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 3), |
| 88 | [STIH416_PCIE0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 15), |
| 89 | [STIH416_PCIE1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 2), |
| 90 | [STIH416_AUD_DAC_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 14), |
| 91 | [STIH416_HDTVOUT_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 5), |
| 92 | [STIH416_VTAC_M_RX_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 25), |
| 93 | [STIH416_VTAC_A_RX_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 26), |
| 94 | [STIH416_SYNC_HD_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 5), |
| 95 | [STIH416_SYNC_SD_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 6), |
| 96 | [STIH416_BLITTER_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 10), |
| 97 | [STIH416_GPU_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 11), |
| 98 | [STIH416_VTAC_M_TX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 18), |
| 99 | [STIH416_VTAC_A_TX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 19), |
| 100 | [STIH416_VTG_AUX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 21), |
| 101 | [STIH416_JPEG_DEC_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 23), |
| 102 | [STIH416_HVA_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 2), |
| 103 | [STIH416_COMPO_M_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 3), |
| 104 | [STIH416_COMPO_A_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 4), |
| 105 | [STIH416_VP8_DEC_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 10), |
| 106 | [STIH416_VTG_MAIN_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 16), |
Gabriel FERNANDEZ | d6c057f | 2014-04-11 17:07:00 +0200 | [diff] [blame] | 107 | [STIH416_KEYSCAN_SOFTRESET] = STIH416_SRST_LPM(LPM_SYSCFG_1, 8), |
Srinivas Kandagatla | e9de663 | 2013-11-12 10:28:03 +0000 | [diff] [blame] | 108 | }; |
| 109 | |
Stephen Gallimore | d0ace0f | 2013-08-07 16:57:26 +0100 | [diff] [blame] | 110 | static struct syscfg_reset_controller_data stih416_powerdown_controller = { |
| 111 | .wait_for_ack = true, |
| 112 | .nr_channels = ARRAY_SIZE(stih416_powerdowns), |
| 113 | .channels = stih416_powerdowns, |
| 114 | }; |
| 115 | |
Srinivas Kandagatla | e9de663 | 2013-11-12 10:28:03 +0000 | [diff] [blame] | 116 | static struct syscfg_reset_controller_data stih416_softreset_controller = { |
| 117 | .wait_for_ack = false, |
| 118 | .active_low = true, |
| 119 | .nr_channels = ARRAY_SIZE(stih416_softresets), |
| 120 | .channels = stih416_softresets, |
| 121 | }; |
| 122 | |
Stephen Gallimore | d0ace0f | 2013-08-07 16:57:26 +0100 | [diff] [blame] | 123 | static struct of_device_id stih416_reset_match[] = { |
| 124 | { .compatible = "st,stih416-powerdown", |
| 125 | .data = &stih416_powerdown_controller, }, |
Srinivas Kandagatla | e9de663 | 2013-11-12 10:28:03 +0000 | [diff] [blame] | 126 | { .compatible = "st,stih416-softreset", |
| 127 | .data = &stih416_softreset_controller, }, |
Stephen Gallimore | d0ace0f | 2013-08-07 16:57:26 +0100 | [diff] [blame] | 128 | {}, |
| 129 | }; |
| 130 | |
| 131 | static struct platform_driver stih416_reset_driver = { |
| 132 | .probe = syscfg_reset_probe, |
| 133 | .driver = { |
| 134 | .name = "reset-stih416", |
Stephen Gallimore | d0ace0f | 2013-08-07 16:57:26 +0100 | [diff] [blame] | 135 | .of_match_table = stih416_reset_match, |
| 136 | }, |
| 137 | }; |
| 138 | |
| 139 | static int __init stih416_reset_init(void) |
| 140 | { |
| 141 | return platform_driver_register(&stih416_reset_driver); |
| 142 | } |
| 143 | arch_initcall(stih416_reset_init); |