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[mirror_ubuntu-hirsute-kernel.git] / arch / mips / alchemy / common / platform.c
1 /*
2 * Platform device support for Au1x00 SoCs.
3 *
4 * Copyright 2004, Matt Porter <mporter@kernel.crashing.org>
5 *
6 * (C) Copyright Embedded Alley Solutions, Inc 2005
7 * Author: Pantelis Antoniou <pantelis@embeddedalley.com>
8 *
9 * This file is licensed under the terms of the GNU General Public
10 * License version 2. This program is licensed "as is" without any
11 * warranty of any kind, whether express or implied.
12 */
13
14 #include <linux/clk.h>
15 #include <linux/dma-mapping.h>
16 #include <linux/etherdevice.h>
17 #include <linux/init.h>
18 #include <linux/platform_device.h>
19 #include <linux/serial_8250.h>
20 #include <linux/slab.h>
21 #include <linux/usb/ehci_pdriver.h>
22 #include <linux/usb/ohci_pdriver.h>
23
24 #include <asm/mach-au1x00/au1000.h>
25 #include <asm/mach-au1x00/au1xxx_dbdma.h>
26 #include <asm/mach-au1x00/au1100_mmc.h>
27 #include <asm/mach-au1x00/au1xxx_eth.h>
28
29 #include <prom.h>
30
31 static void alchemy_8250_pm(struct uart_port *port, unsigned int state,
32 unsigned int old_state)
33 {
34 #ifdef CONFIG_SERIAL_8250
35 switch (state) {
36 case 0:
37 alchemy_uart_enable(CPHYSADDR(port->membase));
38 serial8250_do_pm(port, state, old_state);
39 break;
40 case 3: /* power off */
41 serial8250_do_pm(port, state, old_state);
42 alchemy_uart_disable(CPHYSADDR(port->membase));
43 break;
44 default:
45 serial8250_do_pm(port, state, old_state);
46 break;
47 }
48 #endif
49 }
50
51 #define PORT(_base, _irq) \
52 { \
53 .mapbase = _base, \
54 .irq = _irq, \
55 .regshift = 2, \
56 .iotype = UPIO_AU, \
57 .flags = UPF_SKIP_TEST | UPF_IOREMAP | \
58 UPF_FIXED_TYPE, \
59 .type = PORT_16550A, \
60 .pm = alchemy_8250_pm, \
61 }
62
63 static struct plat_serial8250_port au1x00_uart_data[][4] __initdata = {
64 [ALCHEMY_CPU_AU1000] = {
65 PORT(AU1000_UART0_PHYS_ADDR, AU1000_UART0_INT),
66 PORT(AU1000_UART1_PHYS_ADDR, AU1000_UART1_INT),
67 PORT(AU1000_UART2_PHYS_ADDR, AU1000_UART2_INT),
68 PORT(AU1000_UART3_PHYS_ADDR, AU1000_UART3_INT),
69 },
70 [ALCHEMY_CPU_AU1500] = {
71 PORT(AU1000_UART0_PHYS_ADDR, AU1500_UART0_INT),
72 PORT(AU1000_UART3_PHYS_ADDR, AU1500_UART3_INT),
73 },
74 [ALCHEMY_CPU_AU1100] = {
75 PORT(AU1000_UART0_PHYS_ADDR, AU1100_UART0_INT),
76 PORT(AU1000_UART1_PHYS_ADDR, AU1100_UART1_INT),
77 PORT(AU1000_UART3_PHYS_ADDR, AU1100_UART3_INT),
78 },
79 [ALCHEMY_CPU_AU1550] = {
80 PORT(AU1000_UART0_PHYS_ADDR, AU1550_UART0_INT),
81 PORT(AU1000_UART1_PHYS_ADDR, AU1550_UART1_INT),
82 PORT(AU1000_UART3_PHYS_ADDR, AU1550_UART3_INT),
83 },
84 [ALCHEMY_CPU_AU1200] = {
85 PORT(AU1000_UART0_PHYS_ADDR, AU1200_UART0_INT),
86 PORT(AU1000_UART1_PHYS_ADDR, AU1200_UART1_INT),
87 },
88 [ALCHEMY_CPU_AU1300] = {
89 PORT(AU1300_UART0_PHYS_ADDR, AU1300_UART0_INT),
90 PORT(AU1300_UART1_PHYS_ADDR, AU1300_UART1_INT),
91 PORT(AU1300_UART2_PHYS_ADDR, AU1300_UART2_INT),
92 PORT(AU1300_UART3_PHYS_ADDR, AU1300_UART3_INT),
93 },
94 };
95
96 static struct platform_device au1xx0_uart_device = {
97 .name = "serial8250",
98 .id = PLAT8250_DEV_AU1X00,
99 };
100
101 static void __init alchemy_setup_uarts(int ctype)
102 {
103 long uartclk;
104 int s = sizeof(struct plat_serial8250_port);
105 int c = alchemy_get_uarts(ctype);
106 struct plat_serial8250_port *ports;
107 struct clk *clk = clk_get(NULL, ALCHEMY_PERIPH_CLK);
108
109 if (IS_ERR(clk))
110 return;
111 if (clk_prepare_enable(clk)) {
112 clk_put(clk);
113 return;
114 }
115 uartclk = clk_get_rate(clk);
116 clk_put(clk);
117
118 ports = kcalloc(s, (c + 1), GFP_KERNEL);
119 if (!ports) {
120 printk(KERN_INFO "Alchemy: no memory for UART data\n");
121 return;
122 }
123 memcpy(ports, au1x00_uart_data[ctype], s * c);
124 au1xx0_uart_device.dev.platform_data = ports;
125
126 /* Fill up uartclk. */
127 for (s = 0; s < c; s++)
128 ports[s].uartclk = uartclk;
129 if (platform_device_register(&au1xx0_uart_device))
130 printk(KERN_INFO "Alchemy: failed to register UARTs\n");
131 }
132
133
134 /* The dmamask must be set for OHCI/EHCI to work */
135 static u64 alchemy_ohci_dmamask = DMA_BIT_MASK(32);
136 static u64 __maybe_unused alchemy_ehci_dmamask = DMA_BIT_MASK(32);
137
138 /* Power on callback for the ehci platform driver */
139 static int alchemy_ehci_power_on(struct platform_device *pdev)
140 {
141 return alchemy_usb_control(ALCHEMY_USB_EHCI0, 1);
142 }
143
144 /* Power off/suspend callback for the ehci platform driver */
145 static void alchemy_ehci_power_off(struct platform_device *pdev)
146 {
147 alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);
148 }
149
150 static struct usb_ehci_pdata alchemy_ehci_pdata = {
151 .no_io_watchdog = 1,
152 .power_on = alchemy_ehci_power_on,
153 .power_off = alchemy_ehci_power_off,
154 .power_suspend = alchemy_ehci_power_off,
155 };
156
157 /* Power on callback for the ohci platform driver */
158 static int alchemy_ohci_power_on(struct platform_device *pdev)
159 {
160 int unit;
161
162 unit = (pdev->id == 1) ?
163 ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0;
164
165 return alchemy_usb_control(unit, 1);
166 }
167
168 /* Power off/suspend callback for the ohci platform driver */
169 static void alchemy_ohci_power_off(struct platform_device *pdev)
170 {
171 int unit;
172
173 unit = (pdev->id == 1) ?
174 ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0;
175
176 alchemy_usb_control(unit, 0);
177 }
178
179 static struct usb_ohci_pdata alchemy_ohci_pdata = {
180 .power_on = alchemy_ohci_power_on,
181 .power_off = alchemy_ohci_power_off,
182 .power_suspend = alchemy_ohci_power_off,
183 };
184
185 static unsigned long alchemy_ohci_data[][2] __initdata = {
186 [ALCHEMY_CPU_AU1000] = { AU1000_USB_OHCI_PHYS_ADDR, AU1000_USB_HOST_INT },
187 [ALCHEMY_CPU_AU1500] = { AU1000_USB_OHCI_PHYS_ADDR, AU1500_USB_HOST_INT },
188 [ALCHEMY_CPU_AU1100] = { AU1000_USB_OHCI_PHYS_ADDR, AU1100_USB_HOST_INT },
189 [ALCHEMY_CPU_AU1550] = { AU1550_USB_OHCI_PHYS_ADDR, AU1550_USB_HOST_INT },
190 [ALCHEMY_CPU_AU1200] = { AU1200_USB_OHCI_PHYS_ADDR, AU1200_USB_INT },
191 [ALCHEMY_CPU_AU1300] = { AU1300_USB_OHCI0_PHYS_ADDR, AU1300_USB_INT },
192 };
193
194 static unsigned long alchemy_ehci_data[][2] __initdata = {
195 [ALCHEMY_CPU_AU1200] = { AU1200_USB_EHCI_PHYS_ADDR, AU1200_USB_INT },
196 [ALCHEMY_CPU_AU1300] = { AU1300_USB_EHCI_PHYS_ADDR, AU1300_USB_INT },
197 };
198
199 static int __init _new_usbres(struct resource **r, struct platform_device **d)
200 {
201 *r = kcalloc(2, sizeof(struct resource), GFP_KERNEL);
202 if (!*r)
203 return -ENOMEM;
204 *d = kzalloc(sizeof(struct platform_device), GFP_KERNEL);
205 if (!*d) {
206 kfree(*r);
207 return -ENOMEM;
208 }
209
210 (*d)->dev.coherent_dma_mask = DMA_BIT_MASK(32);
211 (*d)->num_resources = 2;
212 (*d)->resource = *r;
213
214 return 0;
215 }
216
217 static void __init alchemy_setup_usb(int ctype)
218 {
219 struct resource *res;
220 struct platform_device *pdev;
221
222 /* setup OHCI0. Every variant has one */
223 if (_new_usbres(&res, &pdev))
224 return;
225
226 res[0].start = alchemy_ohci_data[ctype][0];
227 res[0].end = res[0].start + 0x100 - 1;
228 res[0].flags = IORESOURCE_MEM;
229 res[1].start = alchemy_ohci_data[ctype][1];
230 res[1].end = res[1].start;
231 res[1].flags = IORESOURCE_IRQ;
232 pdev->name = "ohci-platform";
233 pdev->id = 0;
234 pdev->dev.dma_mask = &alchemy_ohci_dmamask;
235 pdev->dev.platform_data = &alchemy_ohci_pdata;
236
237 if (platform_device_register(pdev))
238 printk(KERN_INFO "Alchemy USB: cannot add OHCI0\n");
239
240
241 /* setup EHCI0: Au1200/Au1300 */
242 if ((ctype == ALCHEMY_CPU_AU1200) || (ctype == ALCHEMY_CPU_AU1300)) {
243 if (_new_usbres(&res, &pdev))
244 return;
245
246 res[0].start = alchemy_ehci_data[ctype][0];
247 res[0].end = res[0].start + 0x100 - 1;
248 res[0].flags = IORESOURCE_MEM;
249 res[1].start = alchemy_ehci_data[ctype][1];
250 res[1].end = res[1].start;
251 res[1].flags = IORESOURCE_IRQ;
252 pdev->name = "ehci-platform";
253 pdev->id = 0;
254 pdev->dev.dma_mask = &alchemy_ehci_dmamask;
255 pdev->dev.platform_data = &alchemy_ehci_pdata;
256
257 if (platform_device_register(pdev))
258 printk(KERN_INFO "Alchemy USB: cannot add EHCI0\n");
259 }
260
261 /* Au1300: OHCI1 */
262 if (ctype == ALCHEMY_CPU_AU1300) {
263 if (_new_usbres(&res, &pdev))
264 return;
265
266 res[0].start = AU1300_USB_OHCI1_PHYS_ADDR;
267 res[0].end = res[0].start + 0x100 - 1;
268 res[0].flags = IORESOURCE_MEM;
269 res[1].start = AU1300_USB_INT;
270 res[1].end = res[1].start;
271 res[1].flags = IORESOURCE_IRQ;
272 pdev->name = "ohci-platform";
273 pdev->id = 1;
274 pdev->dev.dma_mask = &alchemy_ohci_dmamask;
275 pdev->dev.platform_data = &alchemy_ohci_pdata;
276
277 if (platform_device_register(pdev))
278 printk(KERN_INFO "Alchemy USB: cannot add OHCI1\n");
279 }
280 }
281
282 /* Macro to help defining the Ethernet MAC resources */
283 #define MAC_RES_COUNT 4 /* MAC regs, MAC en, MAC INT, MACDMA regs */
284 #define MAC_RES(_base, _enable, _irq, _macdma) \
285 { \
286 .start = _base, \
287 .end = _base + 0xffff, \
288 .flags = IORESOURCE_MEM, \
289 }, \
290 { \
291 .start = _enable, \
292 .end = _enable + 0x3, \
293 .flags = IORESOURCE_MEM, \
294 }, \
295 { \
296 .start = _irq, \
297 .end = _irq, \
298 .flags = IORESOURCE_IRQ \
299 }, \
300 { \
301 .start = _macdma, \
302 .end = _macdma + 0x1ff, \
303 .flags = IORESOURCE_MEM, \
304 }
305
306 static struct resource au1xxx_eth0_resources[][MAC_RES_COUNT] __initdata = {
307 [ALCHEMY_CPU_AU1000] = {
308 MAC_RES(AU1000_MAC0_PHYS_ADDR,
309 AU1000_MACEN_PHYS_ADDR,
310 AU1000_MAC0_DMA_INT,
311 AU1000_MACDMA0_PHYS_ADDR)
312 },
313 [ALCHEMY_CPU_AU1500] = {
314 MAC_RES(AU1500_MAC0_PHYS_ADDR,
315 AU1500_MACEN_PHYS_ADDR,
316 AU1500_MAC0_DMA_INT,
317 AU1000_MACDMA0_PHYS_ADDR)
318 },
319 [ALCHEMY_CPU_AU1100] = {
320 MAC_RES(AU1000_MAC0_PHYS_ADDR,
321 AU1000_MACEN_PHYS_ADDR,
322 AU1100_MAC0_DMA_INT,
323 AU1000_MACDMA0_PHYS_ADDR)
324 },
325 [ALCHEMY_CPU_AU1550] = {
326 MAC_RES(AU1000_MAC0_PHYS_ADDR,
327 AU1000_MACEN_PHYS_ADDR,
328 AU1550_MAC0_DMA_INT,
329 AU1000_MACDMA0_PHYS_ADDR)
330 },
331 };
332
333 static struct au1000_eth_platform_data au1xxx_eth0_platform_data = {
334 .phy1_search_mac0 = 1,
335 };
336
337 static struct platform_device au1xxx_eth0_device = {
338 .name = "au1000-eth",
339 .id = 0,
340 .num_resources = MAC_RES_COUNT,
341 .dev.platform_data = &au1xxx_eth0_platform_data,
342 };
343
344 static struct resource au1xxx_eth1_resources[][MAC_RES_COUNT] __initdata = {
345 [ALCHEMY_CPU_AU1000] = {
346 MAC_RES(AU1000_MAC1_PHYS_ADDR,
347 AU1000_MACEN_PHYS_ADDR + 4,
348 AU1000_MAC1_DMA_INT,
349 AU1000_MACDMA1_PHYS_ADDR)
350 },
351 [ALCHEMY_CPU_AU1500] = {
352 MAC_RES(AU1500_MAC1_PHYS_ADDR,
353 AU1500_MACEN_PHYS_ADDR + 4,
354 AU1500_MAC1_DMA_INT,
355 AU1000_MACDMA1_PHYS_ADDR)
356 },
357 [ALCHEMY_CPU_AU1550] = {
358 MAC_RES(AU1000_MAC1_PHYS_ADDR,
359 AU1000_MACEN_PHYS_ADDR + 4,
360 AU1550_MAC1_DMA_INT,
361 AU1000_MACDMA1_PHYS_ADDR)
362 },
363 };
364
365 static struct au1000_eth_platform_data au1xxx_eth1_platform_data = {
366 .phy1_search_mac0 = 1,
367 };
368
369 static struct platform_device au1xxx_eth1_device = {
370 .name = "au1000-eth",
371 .id = 1,
372 .num_resources = MAC_RES_COUNT,
373 .dev.platform_data = &au1xxx_eth1_platform_data,
374 };
375
376 void __init au1xxx_override_eth_cfg(unsigned int port,
377 struct au1000_eth_platform_data *eth_data)
378 {
379 if (!eth_data || port > 1)
380 return;
381
382 if (port == 0)
383 memcpy(&au1xxx_eth0_platform_data, eth_data,
384 sizeof(struct au1000_eth_platform_data));
385 else
386 memcpy(&au1xxx_eth1_platform_data, eth_data,
387 sizeof(struct au1000_eth_platform_data));
388 }
389
390 static void __init alchemy_setup_macs(int ctype)
391 {
392 int ret, i;
393 unsigned char ethaddr[6];
394 struct resource *macres;
395
396 /* Handle 1st MAC */
397 if (alchemy_get_macs(ctype) < 1)
398 return;
399
400 macres = kmemdup(au1xxx_eth0_resources[ctype],
401 sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL);
402 if (!macres) {
403 printk(KERN_INFO "Alchemy: no memory for MAC0 resources\n");
404 return;
405 }
406 au1xxx_eth0_device.resource = macres;
407
408 i = prom_get_ethernet_addr(ethaddr);
409 if (!i && !is_valid_ether_addr(au1xxx_eth0_platform_data.mac))
410 memcpy(au1xxx_eth0_platform_data.mac, ethaddr, 6);
411
412 ret = platform_device_register(&au1xxx_eth0_device);
413 if (ret)
414 printk(KERN_INFO "Alchemy: failed to register MAC0\n");
415
416
417 /* Handle 2nd MAC */
418 if (alchemy_get_macs(ctype) < 2)
419 return;
420
421 macres = kmemdup(au1xxx_eth1_resources[ctype],
422 sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL);
423 if (!macres) {
424 printk(KERN_INFO "Alchemy: no memory for MAC1 resources\n");
425 return;
426 }
427 au1xxx_eth1_device.resource = macres;
428
429 ethaddr[5] += 1; /* next addr for 2nd MAC */
430 if (!i && !is_valid_ether_addr(au1xxx_eth1_platform_data.mac))
431 memcpy(au1xxx_eth1_platform_data.mac, ethaddr, 6);
432
433 /* Register second MAC if enabled in pinfunc */
434 if (!(alchemy_rdsys(AU1000_SYS_PINFUNC) & SYS_PF_NI2)) {
435 ret = platform_device_register(&au1xxx_eth1_device);
436 if (ret)
437 printk(KERN_INFO "Alchemy: failed to register MAC1\n");
438 }
439 }
440
441 static int __init au1xxx_platform_init(void)
442 {
443 int ctype = alchemy_get_cputype();
444
445 alchemy_setup_uarts(ctype);
446 alchemy_setup_macs(ctype);
447 alchemy_setup_usb(ctype);
448
449 return 0;
450 }
451
452 arch_initcall(au1xxx_platform_init);
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