ip22-platform.c

  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
 15static 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
 24static struct sgiwd93_platform_data sgiwd93_0_pd = {
 25	.unit	= 0,
 26	.irq	= SGI_WD93_0_IRQ,
 27};
 28
 29static u64 sgiwd93_0_dma_mask = DMA_BIT_MASK(32);
 30
 31static 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
 43static 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
 52static struct sgiwd93_platform_data sgiwd93_1_pd = {
 53	.unit	= 1,
 54	.irq	= SGI_WD93_1_IRQ,
 55};
 56
 57static u64 sgiwd93_1_dma_mask = DMA_BIT_MASK(32);
 58
 59static 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 */
 75static 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
 95device_initcall(sgiwd93_devinit);
 96
 97static 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
106static struct sgiseeq_platform_data eth0_pd;
107
108static u64 sgiseeq_dma_mask = DMA_BIT_MASK(32);
109
110static 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
122static 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
131static struct sgiseeq_platform_data eth1_pd;
132
133static 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 */
147static 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
191device_initcall(sgiseeq_devinit);
192
193static int __init sgi_hal2_devinit(void)
194{
195	return IS_ERR(platform_device_register_simple("sgihal2", 0, NULL, 0));
196}
197
198device_initcall(sgi_hal2_devinit);
199
200static 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
208device_initcall(sgi_button_devinit);
209
210static 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
223device_initcall(sgi_ds1286_devinit);
224
225#define SGI_ZILOG_BASE	(HPC3_CHIP0_BASE + \
226			 offsetof(struct hpc3_regs, pbus_extregs[6]) + \
227			 offsetof(struct sgioc_regs, uart))
228
229static struct resource sgi_zilog_resources[] = {
230	{
231		.start	= SGI_ZILOG_BASE,
232		.end	= SGI_ZILOG_BASE + 15,
233		.flags	= IORESOURCE_MEM
234	},
235	{
236		.start	= SGI_SERIAL_IRQ,
237		.end	= SGI_SERIAL_IRQ,
238		.flags	= IORESOURCE_IRQ
239	}
240};
241
242static struct platform_device zilog_device = {
243	.name		= "ip22zilog",
244	.id		= 0,
245	.num_resources	= ARRAY_SIZE(sgi_zilog_resources),
246	.resource	= sgi_zilog_resources,
247};
248
249
250static int __init sgi_zilog_devinit(void)
251{
252	return platform_device_register(&zilog_device);
253}
254
255device_initcall(sgi_zilog_devinit);