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
alchemy_8250_pm(struct uart_port * port,unsigned int state,unsigned int old_state)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 .mapsize = 0x1000, \
55 .irq = _irq, \
56 .regshift = 2, \
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
alchemy_setup_uarts(int ctype)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 (au_platform_setup(&ports[s]) < 0) {
130 kfree(ports);
131 printk(KERN_INFO "Alchemy: missing support for UARTs\n");
132 return;
133 }
134 }
135 if (platform_device_register(&au1xx0_uart_device))
136 printk(KERN_INFO "Alchemy: failed to register UARTs\n");
137 }
138
139
140 static u64 alchemy_all_dmamask = DMA_BIT_MASK(32);
141
142 /* Power on callback for the ehci platform driver */
alchemy_ehci_power_on(struct platform_device * pdev)143 static int alchemy_ehci_power_on(struct platform_device *pdev)
144 {
145 return alchemy_usb_control(ALCHEMY_USB_EHCI0, 1);
146 }
147
148 /* Power off/suspend callback for the ehci platform driver */
alchemy_ehci_power_off(struct platform_device * pdev)149 static void alchemy_ehci_power_off(struct platform_device *pdev)
150 {
151 alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);
152 }
153
154 static struct usb_ehci_pdata alchemy_ehci_pdata = {
155 .no_io_watchdog = 1,
156 .power_on = alchemy_ehci_power_on,
157 .power_off = alchemy_ehci_power_off,
158 .power_suspend = alchemy_ehci_power_off,
159 };
160
161 /* Power on callback for the ohci platform driver */
alchemy_ohci_power_on(struct platform_device * pdev)162 static int alchemy_ohci_power_on(struct platform_device *pdev)
163 {
164 int unit;
165
166 unit = (pdev->id == 1) ?
167 ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0;
168
169 return alchemy_usb_control(unit, 1);
170 }
171
172 /* Power off/suspend callback for the ohci platform driver */
alchemy_ohci_power_off(struct platform_device * pdev)173 static void alchemy_ohci_power_off(struct platform_device *pdev)
174 {
175 int unit;
176
177 unit = (pdev->id == 1) ?
178 ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0;
179
180 alchemy_usb_control(unit, 0);
181 }
182
183 static struct usb_ohci_pdata alchemy_ohci_pdata = {
184 .power_on = alchemy_ohci_power_on,
185 .power_off = alchemy_ohci_power_off,
186 .power_suspend = alchemy_ohci_power_off,
187 };
188
189 static unsigned long alchemy_ohci_data[][2] __initdata = {
190 [ALCHEMY_CPU_AU1000] = { AU1000_USB_OHCI_PHYS_ADDR, AU1000_USB_HOST_INT },
191 [ALCHEMY_CPU_AU1500] = { AU1000_USB_OHCI_PHYS_ADDR, AU1500_USB_HOST_INT },
192 [ALCHEMY_CPU_AU1100] = { AU1000_USB_OHCI_PHYS_ADDR, AU1100_USB_HOST_INT },
193 [ALCHEMY_CPU_AU1550] = { AU1550_USB_OHCI_PHYS_ADDR, AU1550_USB_HOST_INT },
194 [ALCHEMY_CPU_AU1200] = { AU1200_USB_OHCI_PHYS_ADDR, AU1200_USB_INT },
195 [ALCHEMY_CPU_AU1300] = { AU1300_USB_OHCI0_PHYS_ADDR, AU1300_USB_INT },
196 };
197
198 static unsigned long alchemy_ehci_data[][2] __initdata = {
199 [ALCHEMY_CPU_AU1200] = { AU1200_USB_EHCI_PHYS_ADDR, AU1200_USB_INT },
200 [ALCHEMY_CPU_AU1300] = { AU1300_USB_EHCI_PHYS_ADDR, AU1300_USB_INT },
201 };
202
_new_usbres(struct resource ** r,struct platform_device ** d)203 static int __init _new_usbres(struct resource **r, struct platform_device **d)
204 {
205 *r = kcalloc(2, sizeof(struct resource), GFP_KERNEL);
206 if (!*r)
207 return -ENOMEM;
208 *d = kzalloc(sizeof(struct platform_device), GFP_KERNEL);
209 if (!*d) {
210 kfree(*r);
211 return -ENOMEM;
212 }
213
214 (*d)->dev.coherent_dma_mask = DMA_BIT_MASK(32);
215 (*d)->num_resources = 2;
216 (*d)->resource = *r;
217
218 return 0;
219 }
220
alchemy_setup_usb(int ctype)221 static void __init alchemy_setup_usb(int ctype)
222 {
223 struct resource *res;
224 struct platform_device *pdev;
225
226 /* setup OHCI0. Every variant has one */
227 if (_new_usbres(&res, &pdev))
228 return;
229
230 res[0].start = alchemy_ohci_data[ctype][0];
231 res[0].end = res[0].start + 0x100 - 1;
232 res[0].flags = IORESOURCE_MEM;
233 res[1].start = alchemy_ohci_data[ctype][1];
234 res[1].end = res[1].start;
235 res[1].flags = IORESOURCE_IRQ;
236 pdev->name = "ohci-platform";
237 pdev->id = 0;
238 pdev->dev.dma_mask = &alchemy_all_dmamask;
239 pdev->dev.platform_data = &alchemy_ohci_pdata;
240
241 if (platform_device_register(pdev))
242 printk(KERN_INFO "Alchemy USB: cannot add OHCI0\n");
243
244
245 /* setup EHCI0: Au1200/Au1300 */
246 if ((ctype == ALCHEMY_CPU_AU1200) || (ctype == ALCHEMY_CPU_AU1300)) {
247 if (_new_usbres(&res, &pdev))
248 return;
249
250 res[0].start = alchemy_ehci_data[ctype][0];
251 res[0].end = res[0].start + 0x100 - 1;
252 res[0].flags = IORESOURCE_MEM;
253 res[1].start = alchemy_ehci_data[ctype][1];
254 res[1].end = res[1].start;
255 res[1].flags = IORESOURCE_IRQ;
256 pdev->name = "ehci-platform";
257 pdev->id = 0;
258 pdev->dev.dma_mask = &alchemy_all_dmamask;
259 pdev->dev.platform_data = &alchemy_ehci_pdata;
260
261 if (platform_device_register(pdev))
262 printk(KERN_INFO "Alchemy USB: cannot add EHCI0\n");
263 }
264
265 /* Au1300: OHCI1 */
266 if (ctype == ALCHEMY_CPU_AU1300) {
267 if (_new_usbres(&res, &pdev))
268 return;
269
270 res[0].start = AU1300_USB_OHCI1_PHYS_ADDR;
271 res[0].end = res[0].start + 0x100 - 1;
272 res[0].flags = IORESOURCE_MEM;
273 res[1].start = AU1300_USB_INT;
274 res[1].end = res[1].start;
275 res[1].flags = IORESOURCE_IRQ;
276 pdev->name = "ohci-platform";
277 pdev->id = 1;
278 pdev->dev.dma_mask = &alchemy_all_dmamask;
279 pdev->dev.platform_data = &alchemy_ohci_pdata;
280
281 if (platform_device_register(pdev))
282 printk(KERN_INFO "Alchemy USB: cannot add OHCI1\n");
283 }
284 }
285
286 /* Macro to help defining the Ethernet MAC resources */
287 #define MAC_RES_COUNT 4 /* MAC regs, MAC en, MAC INT, MACDMA regs */
288 #define MAC_RES(_base, _enable, _irq, _macdma) \
289 { \
290 .start = _base, \
291 .end = _base + 0xffff, \
292 .flags = IORESOURCE_MEM, \
293 }, \
294 { \
295 .start = _enable, \
296 .end = _enable + 0x3, \
297 .flags = IORESOURCE_MEM, \
298 }, \
299 { \
300 .start = _irq, \
301 .end = _irq, \
302 .flags = IORESOURCE_IRQ \
303 }, \
304 { \
305 .start = _macdma, \
306 .end = _macdma + 0x1ff, \
307 .flags = IORESOURCE_MEM, \
308 }
309
310 static struct resource au1xxx_eth0_resources[][MAC_RES_COUNT] __initdata = {
311 [ALCHEMY_CPU_AU1000] = {
312 MAC_RES(AU1000_MAC0_PHYS_ADDR,
313 AU1000_MACEN_PHYS_ADDR,
314 AU1000_MAC0_DMA_INT,
315 AU1000_MACDMA0_PHYS_ADDR)
316 },
317 [ALCHEMY_CPU_AU1500] = {
318 MAC_RES(AU1500_MAC0_PHYS_ADDR,
319 AU1500_MACEN_PHYS_ADDR,
320 AU1500_MAC0_DMA_INT,
321 AU1000_MACDMA0_PHYS_ADDR)
322 },
323 [ALCHEMY_CPU_AU1100] = {
324 MAC_RES(AU1000_MAC0_PHYS_ADDR,
325 AU1000_MACEN_PHYS_ADDR,
326 AU1100_MAC0_DMA_INT,
327 AU1000_MACDMA0_PHYS_ADDR)
328 },
329 [ALCHEMY_CPU_AU1550] = {
330 MAC_RES(AU1000_MAC0_PHYS_ADDR,
331 AU1000_MACEN_PHYS_ADDR,
332 AU1550_MAC0_DMA_INT,
333 AU1000_MACDMA0_PHYS_ADDR)
334 },
335 };
336
337 static struct au1000_eth_platform_data au1xxx_eth0_platform_data = {
338 .phy1_search_mac0 = 1,
339 };
340
341 static struct platform_device au1xxx_eth0_device = {
342 .name = "au1000-eth",
343 .id = 0,
344 .num_resources = MAC_RES_COUNT,
345 .dev = {
346 .dma_mask = &alchemy_all_dmamask,
347 .coherent_dma_mask = DMA_BIT_MASK(32),
348 .platform_data = &au1xxx_eth0_platform_data,
349 },
350 };
351
352 static struct resource au1xxx_eth1_resources[][MAC_RES_COUNT] __initdata = {
353 [ALCHEMY_CPU_AU1000] = {
354 MAC_RES(AU1000_MAC1_PHYS_ADDR,
355 AU1000_MACEN_PHYS_ADDR + 4,
356 AU1000_MAC1_DMA_INT,
357 AU1000_MACDMA1_PHYS_ADDR)
358 },
359 [ALCHEMY_CPU_AU1500] = {
360 MAC_RES(AU1500_MAC1_PHYS_ADDR,
361 AU1500_MACEN_PHYS_ADDR + 4,
362 AU1500_MAC1_DMA_INT,
363 AU1000_MACDMA1_PHYS_ADDR)
364 },
365 [ALCHEMY_CPU_AU1550] = {
366 MAC_RES(AU1000_MAC1_PHYS_ADDR,
367 AU1000_MACEN_PHYS_ADDR + 4,
368 AU1550_MAC1_DMA_INT,
369 AU1000_MACDMA1_PHYS_ADDR)
370 },
371 };
372
373 static struct au1000_eth_platform_data au1xxx_eth1_platform_data = {
374 .phy1_search_mac0 = 1,
375 };
376
377 static struct platform_device au1xxx_eth1_device = {
378 .name = "au1000-eth",
379 .id = 1,
380 .num_resources = MAC_RES_COUNT,
381 .dev = {
382 .dma_mask = &alchemy_all_dmamask,
383 .coherent_dma_mask = DMA_BIT_MASK(32),
384 .platform_data = &au1xxx_eth1_platform_data,
385 },
386 };
387
au1xxx_override_eth_cfg(unsigned int port,struct au1000_eth_platform_data * eth_data)388 void __init au1xxx_override_eth_cfg(unsigned int port,
389 struct au1000_eth_platform_data *eth_data)
390 {
391 if (!eth_data || port > 1)
392 return;
393
394 if (port == 0)
395 memcpy(&au1xxx_eth0_platform_data, eth_data,
396 sizeof(struct au1000_eth_platform_data));
397 else
398 memcpy(&au1xxx_eth1_platform_data, eth_data,
399 sizeof(struct au1000_eth_platform_data));
400 }
401
alchemy_setup_macs(int ctype)402 static void __init alchemy_setup_macs(int ctype)
403 {
404 int ret, i;
405 unsigned char ethaddr[6];
406 struct resource *macres;
407
408 /* Handle 1st MAC */
409 if (alchemy_get_macs(ctype) < 1)
410 return;
411
412 macres = kmemdup_array(au1xxx_eth0_resources[ctype], MAC_RES_COUNT,
413 sizeof(*macres), GFP_KERNEL);
414 if (!macres) {
415 printk(KERN_INFO "Alchemy: no memory for MAC0 resources\n");
416 return;
417 }
418 au1xxx_eth0_device.resource = macres;
419
420 i = prom_get_ethernet_addr(ethaddr);
421 if (!i && !is_valid_ether_addr(au1xxx_eth0_platform_data.mac))
422 memcpy(au1xxx_eth0_platform_data.mac, ethaddr, 6);
423
424 ret = platform_device_register(&au1xxx_eth0_device);
425 if (ret)
426 printk(KERN_INFO "Alchemy: failed to register MAC0\n");
427
428
429 /* Handle 2nd MAC */
430 if (alchemy_get_macs(ctype) < 2)
431 return;
432
433 macres = kmemdup_array(au1xxx_eth1_resources[ctype], MAC_RES_COUNT,
434 sizeof(*macres), GFP_KERNEL);
435 if (!macres) {
436 printk(KERN_INFO "Alchemy: no memory for MAC1 resources\n");
437 return;
438 }
439 au1xxx_eth1_device.resource = macres;
440
441 ethaddr[5] += 1; /* next addr for 2nd MAC */
442 if (!i && !is_valid_ether_addr(au1xxx_eth1_platform_data.mac))
443 memcpy(au1xxx_eth1_platform_data.mac, ethaddr, 6);
444
445 /* Register second MAC if enabled in pinfunc */
446 if (!(alchemy_rdsys(AU1000_SYS_PINFUNC) & SYS_PF_NI2)) {
447 ret = platform_device_register(&au1xxx_eth1_device);
448 if (ret)
449 printk(KERN_INFO "Alchemy: failed to register MAC1\n");
450 }
451 }
452
au1xxx_platform_init(void)453 static int __init au1xxx_platform_init(void)
454 {
455 int ctype = alchemy_get_cputype();
456
457 alchemy_setup_uarts(ctype);
458 alchemy_setup_macs(ctype);
459 alchemy_setup_usb(ctype);
460
461 return 0;
462 }
463
464 arch_initcall(au1xxx_platform_init);
465