Merge tag 'v4.18-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds...
[linux-2.6-microblaze.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);