Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[deliverable/linux.git] / arch / mips / bcm63xx / reset.c
1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>
7 */
8
9 #include <linux/module.h>
10 #include <linux/mutex.h>
11 #include <linux/err.h>
12 #include <linux/clk.h>
13 #include <linux/delay.h>
14 #include <bcm63xx_cpu.h>
15 #include <bcm63xx_io.h>
16 #include <bcm63xx_regs.h>
17 #include <bcm63xx_reset.h>
18
19 #define __GEN_RESET_BITS_TABLE(__cpu) \
20 [BCM63XX_RESET_SPI] = BCM## __cpu ##_RESET_SPI, \
21 [BCM63XX_RESET_ENET] = BCM## __cpu ##_RESET_ENET, \
22 [BCM63XX_RESET_USBH] = BCM## __cpu ##_RESET_USBH, \
23 [BCM63XX_RESET_USBD] = BCM## __cpu ##_RESET_USBD, \
24 [BCM63XX_RESET_DSL] = BCM## __cpu ##_RESET_DSL, \
25 [BCM63XX_RESET_SAR] = BCM## __cpu ##_RESET_SAR, \
26 [BCM63XX_RESET_EPHY] = BCM## __cpu ##_RESET_EPHY, \
27 [BCM63XX_RESET_ENETSW] = BCM## __cpu ##_RESET_ENETSW, \
28 [BCM63XX_RESET_PCM] = BCM## __cpu ##_RESET_PCM, \
29 [BCM63XX_RESET_MPI] = BCM## __cpu ##_RESET_MPI, \
30 [BCM63XX_RESET_PCIE] = BCM## __cpu ##_RESET_PCIE, \
31 [BCM63XX_RESET_PCIE_EXT] = BCM## __cpu ##_RESET_PCIE_EXT,
32
33 #define BCM6328_RESET_SPI SOFTRESET_6328_SPI_MASK
34 #define BCM6328_RESET_ENET 0
35 #define BCM6328_RESET_USBH SOFTRESET_6328_USBH_MASK
36 #define BCM6328_RESET_USBD SOFTRESET_6328_USBS_MASK
37 #define BCM6328_RESET_DSL 0
38 #define BCM6328_RESET_SAR SOFTRESET_6328_SAR_MASK
39 #define BCM6328_RESET_EPHY SOFTRESET_6328_EPHY_MASK
40 #define BCM6328_RESET_ENETSW SOFTRESET_6328_ENETSW_MASK
41 #define BCM6328_RESET_PCM SOFTRESET_6328_PCM_MASK
42 #define BCM6328_RESET_MPI 0
43 #define BCM6328_RESET_PCIE \
44 (SOFTRESET_6328_PCIE_MASK | \
45 SOFTRESET_6328_PCIE_CORE_MASK | \
46 SOFTRESET_6328_PCIE_HARD_MASK)
47 #define BCM6328_RESET_PCIE_EXT SOFTRESET_6328_PCIE_EXT_MASK
48
49 #define BCM6338_RESET_SPI SOFTRESET_6338_SPI_MASK
50 #define BCM6338_RESET_ENET SOFTRESET_6338_ENET_MASK
51 #define BCM6338_RESET_USBH SOFTRESET_6338_USBH_MASK
52 #define BCM6338_RESET_USBD SOFTRESET_6338_USBS_MASK
53 #define BCM6338_RESET_DSL SOFTRESET_6338_ADSL_MASK
54 #define BCM6338_RESET_SAR SOFTRESET_6338_SAR_MASK
55 #define BCM6338_RESET_EPHY 0
56 #define BCM6338_RESET_ENETSW 0
57 #define BCM6338_RESET_PCM 0
58 #define BCM6338_RESET_MPI 0
59 #define BCM6338_RESET_PCIE 0
60 #define BCM6338_RESET_PCIE_EXT 0
61
62 #define BCM6348_RESET_SPI SOFTRESET_6348_SPI_MASK
63 #define BCM6348_RESET_ENET SOFTRESET_6348_ENET_MASK
64 #define BCM6348_RESET_USBH SOFTRESET_6348_USBH_MASK
65 #define BCM6348_RESET_USBD SOFTRESET_6348_USBS_MASK
66 #define BCM6348_RESET_DSL SOFTRESET_6348_ADSL_MASK
67 #define BCM6348_RESET_SAR SOFTRESET_6348_SAR_MASK
68 #define BCM6348_RESET_EPHY 0
69 #define BCM6348_RESET_ENETSW 0
70 #define BCM6348_RESET_PCM 0
71 #define BCM6348_RESET_MPI 0
72 #define BCM6348_RESET_PCIE 0
73 #define BCM6348_RESET_PCIE_EXT 0
74
75 #define BCM6358_RESET_SPI SOFTRESET_6358_SPI_MASK
76 #define BCM6358_RESET_ENET SOFTRESET_6358_ENET_MASK
77 #define BCM6358_RESET_USBH SOFTRESET_6358_USBH_MASK
78 #define BCM6358_RESET_USBD 0
79 #define BCM6358_RESET_DSL SOFTRESET_6358_ADSL_MASK
80 #define BCM6358_RESET_SAR SOFTRESET_6358_SAR_MASK
81 #define BCM6358_RESET_EPHY SOFTRESET_6358_EPHY_MASK
82 #define BCM6358_RESET_ENETSW 0
83 #define BCM6358_RESET_PCM SOFTRESET_6358_PCM_MASK
84 #define BCM6358_RESET_MPI SOFTRESET_6358_MPI_MASK
85 #define BCM6358_RESET_PCIE 0
86 #define BCM6358_RESET_PCIE_EXT 0
87
88 #define BCM6362_RESET_SPI SOFTRESET_6362_SPI_MASK
89 #define BCM6362_RESET_ENET 0
90 #define BCM6362_RESET_USBH SOFTRESET_6362_USBH_MASK
91 #define BCM6362_RESET_USBD SOFTRESET_6362_USBS_MASK
92 #define BCM6362_RESET_DSL 0
93 #define BCM6362_RESET_SAR SOFTRESET_6362_SAR_MASK
94 #define BCM6362_RESET_EPHY SOFTRESET_6362_EPHY_MASK
95 #define BCM6362_RESET_ENETSW SOFTRESET_6362_ENETSW_MASK
96 #define BCM6362_RESET_PCM SOFTRESET_6362_PCM_MASK
97 #define BCM6362_RESET_MPI 0
98 #define BCM6362_RESET_PCIE (SOFTRESET_6362_PCIE_MASK | \
99 SOFTRESET_6362_PCIE_CORE_MASK)
100 #define BCM6362_RESET_PCIE_EXT SOFTRESET_6362_PCIE_EXT_MASK
101
102 #define BCM6368_RESET_SPI SOFTRESET_6368_SPI_MASK
103 #define BCM6368_RESET_ENET 0
104 #define BCM6368_RESET_USBH SOFTRESET_6368_USBH_MASK
105 #define BCM6368_RESET_USBD SOFTRESET_6368_USBS_MASK
106 #define BCM6368_RESET_DSL 0
107 #define BCM6368_RESET_SAR SOFTRESET_6368_SAR_MASK
108 #define BCM6368_RESET_EPHY SOFTRESET_6368_EPHY_MASK
109 #define BCM6368_RESET_ENETSW 0
110 #define BCM6368_RESET_PCM SOFTRESET_6368_PCM_MASK
111 #define BCM6368_RESET_MPI SOFTRESET_6368_MPI_MASK
112 #define BCM6368_RESET_PCIE 0
113 #define BCM6368_RESET_PCIE_EXT 0
114
115 #ifdef BCMCPU_RUNTIME_DETECT
116
117 /*
118 * core reset bits
119 */
120 static const u32 bcm6328_reset_bits[] = {
121 __GEN_RESET_BITS_TABLE(6328)
122 };
123
124 static const u32 bcm6338_reset_bits[] = {
125 __GEN_RESET_BITS_TABLE(6338)
126 };
127
128 static const u32 bcm6348_reset_bits[] = {
129 __GEN_RESET_BITS_TABLE(6348)
130 };
131
132 static const u32 bcm6358_reset_bits[] = {
133 __GEN_RESET_BITS_TABLE(6358)
134 };
135
136 static const u32 bcm6362_reset_bits[] = {
137 __GEN_RESET_BITS_TABLE(6362)
138 };
139
140 static const u32 bcm6368_reset_bits[] = {
141 __GEN_RESET_BITS_TABLE(6368)
142 };
143
144 const u32 *bcm63xx_reset_bits;
145 static int reset_reg;
146
147 static int __init bcm63xx_reset_bits_init(void)
148 {
149 if (BCMCPU_IS_6328()) {
150 reset_reg = PERF_SOFTRESET_6328_REG;
151 bcm63xx_reset_bits = bcm6328_reset_bits;
152 } else if (BCMCPU_IS_6338()) {
153 reset_reg = PERF_SOFTRESET_REG;
154 bcm63xx_reset_bits = bcm6338_reset_bits;
155 } else if (BCMCPU_IS_6348()) {
156 reset_reg = PERF_SOFTRESET_REG;
157 bcm63xx_reset_bits = bcm6348_reset_bits;
158 } else if (BCMCPU_IS_6358()) {
159 reset_reg = PERF_SOFTRESET_6358_REG;
160 bcm63xx_reset_bits = bcm6358_reset_bits;
161 } else if (BCMCPU_IS_6362()) {
162 reset_reg = PERF_SOFTRESET_6362_REG;
163 bcm63xx_reset_bits = bcm6362_reset_bits;
164 } else if (BCMCPU_IS_6368()) {
165 reset_reg = PERF_SOFTRESET_6368_REG;
166 bcm63xx_reset_bits = bcm6368_reset_bits;
167 }
168
169 return 0;
170 }
171 #else
172
173 #ifdef CONFIG_BCM63XX_CPU_6328
174 static const u32 bcm63xx_reset_bits[] = {
175 __GEN_RESET_BITS_TABLE(6328)
176 };
177 #define reset_reg PERF_SOFTRESET_6328_REG
178 #endif
179
180 #ifdef CONFIG_BCM63XX_CPU_6338
181 static const u32 bcm63xx_reset_bits[] = {
182 __GEN_RESET_BITS_TABLE(6338)
183 };
184 #define reset_reg PERF_SOFTRESET_REG
185 #endif
186
187 #ifdef CONFIG_BCM63XX_CPU_6345
188 static const u32 bcm63xx_reset_bits[] = { };
189 #define reset_reg 0
190 #endif
191
192 #ifdef CONFIG_BCM63XX_CPU_6348
193 static const u32 bcm63xx_reset_bits[] = {
194 __GEN_RESET_BITS_TABLE(6348)
195 };
196 #define reset_reg PERF_SOFTRESET_REG
197 #endif
198
199 #ifdef CONFIG_BCM63XX_CPU_6358
200 static const u32 bcm63xx_reset_bits[] = {
201 __GEN_RESET_BITS_TABLE(6358)
202 };
203 #define reset_reg PERF_SOFTRESET_6358_REG
204 #endif
205
206 #ifdef CONFIG_BCM63XX_CPU_6362
207 static const u32 bcm63xx_reset_bits[] = {
208 __GEN_RESET_BITS_TABLE(6362)
209 };
210 #define reset_reg PERF_SOFTRESET_6362_REG
211 #endif
212
213 #ifdef CONFIG_BCM63XX_CPU_6368
214 static const u32 bcm63xx_reset_bits[] = {
215 __GEN_RESET_BITS_TABLE(6368)
216 };
217 #define reset_reg PERF_SOFTRESET_6368_REG
218 #endif
219
220 static int __init bcm63xx_reset_bits_init(void) { return 0; }
221 #endif
222
223 static DEFINE_SPINLOCK(reset_mutex);
224
225 static void __bcm63xx_core_set_reset(u32 mask, int enable)
226 {
227 unsigned long flags;
228 u32 val;
229
230 if (!mask)
231 return;
232
233 spin_lock_irqsave(&reset_mutex, flags);
234 val = bcm_perf_readl(reset_reg);
235
236 if (enable)
237 val &= ~mask;
238 else
239 val |= mask;
240
241 bcm_perf_writel(val, reset_reg);
242 spin_unlock_irqrestore(&reset_mutex, flags);
243 }
244
245 void bcm63xx_core_set_reset(enum bcm63xx_core_reset core, int reset)
246 {
247 __bcm63xx_core_set_reset(bcm63xx_reset_bits[core], reset);
248 }
249 EXPORT_SYMBOL(bcm63xx_core_set_reset);
250
251 postcore_initcall(bcm63xx_reset_bits_init);
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