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d0ace0f6 SG |
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 | ||
efdf5aa8 | 16 | #include <dt-bindings/reset/stih416-resets.h> |
d0ace0f6 SG |
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"; | |
e9de6635 | 27 | static const char stih416_cpu[] = "st,stih416-cpu-syscfg"; |
d0ace0f6 SG |
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 | ||
e9de6635 SK |
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 | ||
d0ace0f6 SG |
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 | ||
e9de6635 SK |
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), | |
d6c057f3 | 107 | [STIH416_KEYSCAN_SOFTRESET] = STIH416_SRST_LPM(LPM_SYSCFG_1, 8), |
e9de6635 SK |
108 | }; |
109 | ||
d0ace0f6 SG |
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 | ||
e9de6635 SK |
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 | ||
a518db45 | 123 | static const struct of_device_id stih416_reset_match[] = { |
d0ace0f6 SG |
124 | { .compatible = "st,stih416-powerdown", |
125 | .data = &stih416_powerdown_controller, }, | |
e9de6635 SK |
126 | { .compatible = "st,stih416-softreset", |
127 | .data = &stih416_softreset_controller, }, | |
d0ace0f6 SG |
128 | {}, |
129 | }; | |
130 | ||
131 | static struct platform_driver stih416_reset_driver = { | |
132 | .probe = syscfg_reset_probe, | |
133 | .driver = { | |
134 | .name = "reset-stih416", | |
d0ace0f6 SG |
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); |