1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/init.h>
3 #include <linux/if_ether.h>
4 #include <linux/kernel.h>
5 #include <linux/platform_device.h>
6 #include <linux/dma-mapping.h>
7 
8 #include <asm/paccess.h>
9 #include <asm/sgi/ip22.h>
10 #include <asm/sgi/hpc3.h>
11 #include <asm/sgi/mc.h>
12 #include <asm/sgi/seeq.h>
13 #include <asm/sgi/wd.h>
14 
15 static struct resource sgiwd93_0_resources[] = {
16 	{
17 		.name	= "eth0 irq",
18 		.start	= SGI_WD93_0_IRQ,
19 		.end	= SGI_WD93_0_IRQ,
20 		.flags	= IORESOURCE_IRQ
21 	}
22 };
23 
24 static struct sgiwd93_platform_data sgiwd93_0_pd = {
25 	.unit	= 0,
26 	.irq	= SGI_WD93_0_IRQ,
27 };
28 
29 static u64 sgiwd93_0_dma_mask = DMA_BIT_MASK(32);
30 
31 static struct platform_device sgiwd93_0_device = {
32 	.name		= "sgiwd93",
33 	.id		= 0,
34 	.num_resources	= ARRAY_SIZE(sgiwd93_0_resources),
35 	.resource	= sgiwd93_0_resources,
36 	.dev = {
37 		.platform_data = &sgiwd93_0_pd,
38 		.dma_mask = &sgiwd93_0_dma_mask,
39 		.coherent_dma_mask = DMA_BIT_MASK(32),
40 	},
41 };
42 
43 static struct resource sgiwd93_1_resources[] = {
44 	{
45 		.name	= "eth0 irq",
46 		.start	= SGI_WD93_1_IRQ,
47 		.end	= SGI_WD93_1_IRQ,
48 		.flags	= IORESOURCE_IRQ
49 	}
50 };
51 
52 static struct sgiwd93_platform_data sgiwd93_1_pd = {
53 	.unit	= 1,
54 	.irq	= SGI_WD93_1_IRQ,
55 };
56 
57 static u64 sgiwd93_1_dma_mask = DMA_BIT_MASK(32);
58 
59 static struct platform_device sgiwd93_1_device = {
60 	.name		= "sgiwd93",
61 	.id		= 1,
62 	.num_resources	= ARRAY_SIZE(sgiwd93_1_resources),
63 	.resource	= sgiwd93_1_resources,
64 	.dev = {
65 		.platform_data = &sgiwd93_1_pd,
66 		.dma_mask = &sgiwd93_1_dma_mask,
67 		.coherent_dma_mask = DMA_BIT_MASK(32),
68 	},
69 };
70 
71 /*
72  * Create a platform device for the GPI port that receives the
73  * image data from the embedded camera.
74  */
sgiwd93_devinit(void)75 static int __init sgiwd93_devinit(void)
76 {
77 	int res;
78 
79 	sgiwd93_0_pd.hregs	= &hpc3c0->scsi_chan0;
80 	sgiwd93_0_pd.wdregs	= (unsigned char *) hpc3c0->scsi0_ext;
81 
82 	res = platform_device_register(&sgiwd93_0_device);
83 	if (res)
84 		return res;
85 
86 	if (!ip22_is_fullhouse())
87 		return 0;
88 
89 	sgiwd93_1_pd.hregs	= &hpc3c0->scsi_chan1;
90 	sgiwd93_1_pd.wdregs	= (unsigned char *) hpc3c0->scsi1_ext;
91 
92 	return platform_device_register(&sgiwd93_1_device);
93 }
94 
95 device_initcall(sgiwd93_devinit);
96 
97 static struct resource sgiseeq_0_resources[] = {
98 	{
99 		.name	= "eth0 irq",
100 		.start	= SGI_ENET_IRQ,
101 		.end	= SGI_ENET_IRQ,
102 		.flags	= IORESOURCE_IRQ
103 	}
104 };
105 
106 static struct sgiseeq_platform_data eth0_pd;
107 
108 static u64 sgiseeq_dma_mask = DMA_BIT_MASK(32);
109 
110 static struct platform_device eth0_device = {
111 	.name		= "sgiseeq",
112 	.id		= 0,
113 	.num_resources	= ARRAY_SIZE(sgiseeq_0_resources),
114 	.resource	= sgiseeq_0_resources,
115 	.dev = {
116 		.platform_data = &eth0_pd,
117 		.dma_mask = &sgiseeq_dma_mask,
118 		.coherent_dma_mask = DMA_BIT_MASK(32),
119 	},
120 };
121 
122 static struct resource sgiseeq_1_resources[] = {
123 	{
124 		.name	= "eth1 irq",
125 		.start	= SGI_GIO_0_IRQ,
126 		.end	= SGI_GIO_0_IRQ,
127 		.flags	= IORESOURCE_IRQ
128 	}
129 };
130 
131 static struct sgiseeq_platform_data eth1_pd;
132 
133 static struct platform_device eth1_device = {
134 	.name		= "sgiseeq",
135 	.id		= 1,
136 	.num_resources	= ARRAY_SIZE(sgiseeq_1_resources),
137 	.resource	= sgiseeq_1_resources,
138 	.dev = {
139 		.platform_data = &eth1_pd,
140 	},
141 };
142 
143 /*
144  * Create a platform device for the GPI port that receives the
145  * image data from the embedded camera.
146  */
sgiseeq_devinit(void)147 static int __init sgiseeq_devinit(void)
148 {
149 	unsigned int pbdma __maybe_unused;
150 	int res, i;
151 
152 	eth0_pd.hpc = hpc3c0;
153 	eth0_pd.irq = SGI_ENET_IRQ;
154 #define EADDR_NVOFS	250
155 	for (i = 0; i < 3; i++) {
156 		unsigned short tmp = ip22_nvram_read(EADDR_NVOFS / 2 + i);
157 
158 		eth0_pd.mac[2 * i]     = tmp >> 8;
159 		eth0_pd.mac[2 * i + 1] = tmp & 0xff;
160 	}
161 
162 	res = platform_device_register(&eth0_device);
163 	if (res)
164 		return res;
165 
166 	/* Second HPC is missing? */
167 	if (ip22_is_fullhouse() ||
168 	    get_dbe(pbdma, (unsigned int *)&hpc3c1->pbdma[1]))
169 		return 0;
170 
171 	sgimc->giopar |= SGIMC_GIOPAR_MASTEREXP1 | SGIMC_GIOPAR_EXP164 |
172 			 SGIMC_GIOPAR_HPC264;
173 	hpc3c1->pbus_piocfg[0][0] = 0x3ffff;
174 	/* interrupt/config register on Challenge S Mezz board */
175 	hpc3c1->pbus_extregs[0][0] = 0x30;
176 
177 	eth1_pd.hpc = hpc3c1;
178 	eth1_pd.irq = SGI_GIO_0_IRQ;
179 #define EADDR_NVOFS	250
180 	for (i = 0; i < 3; i++) {
181 		unsigned short tmp = ip22_eeprom_read(&hpc3c1->eeprom,
182 						      EADDR_NVOFS / 2 + i);
183 
184 		eth1_pd.mac[2 * i]     = tmp >> 8;
185 		eth1_pd.mac[2 * i + 1] = tmp & 0xff;
186 	}
187 
188 	return platform_device_register(&eth1_device);
189 }
190 
191 device_initcall(sgiseeq_devinit);
192 
sgi_hal2_devinit(void)193 static int __init sgi_hal2_devinit(void)
194 {
195 	return IS_ERR(platform_device_register_simple("sgihal2", 0, NULL, 0));
196 }
197 
198 device_initcall(sgi_hal2_devinit);
199 
sgi_button_devinit(void)200 static int __init sgi_button_devinit(void)
201 {
202 	if (ip22_is_fullhouse())
203 		return 0; /* full house has no volume buttons */
204 
205 	return IS_ERR(platform_device_register_simple("sgibtns", -1, NULL, 0));
206 }
207 
208 device_initcall(sgi_button_devinit);
209 
sgi_ds1286_devinit(void)210 static int __init sgi_ds1286_devinit(void)
211 {
212 	struct resource res;
213 
214 	memset(&res, 0, sizeof(res));
215 	res.start = HPC3_CHIP0_BASE + offsetof(struct hpc3_regs, rtcregs);
216 	res.end = res.start + sizeof(hpc3c0->rtcregs) - 1;
217 	res.flags = IORESOURCE_MEM;
218 
219 	return IS_ERR(platform_device_register_simple("rtc-ds1286", -1,
220 						      &res, 1));
221 }
222 
223 device_initcall(sgi_ds1286_devinit);
224