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-rw-r--r--arch/arm/mach-iop13xx/setup.c406
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diff --git a/arch/arm/mach-iop13xx/setup.c b/arch/arm/mach-iop13xx/setup.c
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index 000000000000..3756d2ccb1a7
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+++ b/arch/arm/mach-iop13xx/setup.c
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1/*
2 * iop13xx platform Initialization
3 * Copyright (c) 2005-2006, Intel Corporation.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
16 * Place - Suite 330, Boston, MA 02111-1307 USA.
17 *
18 */
19
20#include <linux/serial_8250.h>
21#ifdef CONFIG_MTD_PHYSMAP
22#include <linux/mtd/physmap.h>
23#endif
24#include <asm/mach/map.h>
25#include <asm/hardware.h>
26#include <asm/irq.h>
27
28#define IOP13XX_UART_XTAL 33334000
29#define IOP13XX_SETUP_DEBUG 0
30#define PRINTK(x...) ((void)(IOP13XX_SETUP_DEBUG && printk(x)))
31
32/* Standard IO mapping for all IOP13XX based systems
33 */
34static struct map_desc iop13xx_std_desc[] __initdata = {
35 { /* mem mapped registers */
36 .virtual = IOP13XX_PMMR_VIRT_MEM_BASE,
37 .pfn = __phys_to_pfn(IOP13XX_PMMR_PHYS_MEM_BASE),
38 .length = IOP13XX_PMMR_SIZE,
39 .type = MT_DEVICE,
40 }, { /* PCIE IO space */
41 .virtual = IOP13XX_PCIE_LOWER_IO_VA,
42 .pfn = __phys_to_pfn(IOP13XX_PCIE_LOWER_IO_PA),
43 .length = IOP13XX_PCIX_IO_WINDOW_SIZE,
44 .type = MT_DEVICE,
45 }, { /* PCIX IO space */
46 .virtual = IOP13XX_PCIX_LOWER_IO_VA,
47 .pfn = __phys_to_pfn(IOP13XX_PCIX_LOWER_IO_PA),
48 .length = IOP13XX_PCIX_IO_WINDOW_SIZE,
49 .type = MT_DEVICE,
50 },
51};
52
53static struct resource iop13xx_uart0_resources[] = {
54 [0] = {
55 .start = IOP13XX_UART0_PHYS,
56 .end = IOP13XX_UART0_PHYS + 0x3f,
57 .flags = IORESOURCE_MEM,
58 },
59 [1] = {
60 .start = IRQ_IOP13XX_UART0,
61 .end = IRQ_IOP13XX_UART0,
62 .flags = IORESOURCE_IRQ
63 }
64};
65
66static struct resource iop13xx_uart1_resources[] = {
67 [0] = {
68 .start = IOP13XX_UART1_PHYS,
69 .end = IOP13XX_UART1_PHYS + 0x3f,
70 .flags = IORESOURCE_MEM,
71 },
72 [1] = {
73 .start = IRQ_IOP13XX_UART1,
74 .end = IRQ_IOP13XX_UART1,
75 .flags = IORESOURCE_IRQ
76 }
77};
78
79static struct plat_serial8250_port iop13xx_uart0_data[] = {
80 {
81 .membase = (char*)(IOP13XX_UART0_VIRT),
82 .mapbase = (IOP13XX_UART0_PHYS),
83 .irq = IRQ_IOP13XX_UART0,
84 .uartclk = IOP13XX_UART_XTAL,
85 .regshift = 2,
86 .iotype = UPIO_MEM,
87 .flags = UPF_SKIP_TEST,
88 },
89 { },
90};
91
92static struct plat_serial8250_port iop13xx_uart1_data[] = {
93 {
94 .membase = (char*)(IOP13XX_UART1_VIRT),
95 .mapbase = (IOP13XX_UART1_PHYS),
96 .irq = IRQ_IOP13XX_UART1,
97 .uartclk = IOP13XX_UART_XTAL,
98 .regshift = 2,
99 .iotype = UPIO_MEM,
100 .flags = UPF_SKIP_TEST,
101 },
102 { },
103};
104
105/* The ids are fixed up later in iop13xx_platform_init */
106static struct platform_device iop13xx_uart0 = {
107 .name = "serial8250",
108 .id = 0,
109 .dev.platform_data = iop13xx_uart0_data,
110 .num_resources = 2,
111 .resource = iop13xx_uart0_resources,
112};
113
114static struct platform_device iop13xx_uart1 = {
115 .name = "serial8250",
116 .id = 0,
117 .dev.platform_data = iop13xx_uart1_data,
118 .num_resources = 2,
119 .resource = iop13xx_uart1_resources
120};
121
122static struct resource iop13xx_i2c_0_resources[] = {
123 [0] = {
124 .start = IOP13XX_I2C0_PHYS,
125 .end = IOP13XX_I2C0_PHYS + 0x18,
126 .flags = IORESOURCE_MEM,
127 },
128 [1] = {
129 .start = IRQ_IOP13XX_I2C_0,
130 .end = IRQ_IOP13XX_I2C_0,
131 .flags = IORESOURCE_IRQ
132 }
133};
134
135static struct resource iop13xx_i2c_1_resources[] = {
136 [0] = {
137 .start = IOP13XX_I2C1_PHYS,
138 .end = IOP13XX_I2C1_PHYS + 0x18,
139 .flags = IORESOURCE_MEM,
140 },
141 [1] = {
142 .start = IRQ_IOP13XX_I2C_1,
143 .end = IRQ_IOP13XX_I2C_1,
144 .flags = IORESOURCE_IRQ
145 }
146};
147
148static struct resource iop13xx_i2c_2_resources[] = {
149 [0] = {
150 .start = IOP13XX_I2C2_PHYS,
151 .end = IOP13XX_I2C2_PHYS + 0x18,
152 .flags = IORESOURCE_MEM,
153 },
154 [1] = {
155 .start = IRQ_IOP13XX_I2C_2,
156 .end = IRQ_IOP13XX_I2C_2,
157 .flags = IORESOURCE_IRQ
158 }
159};
160
161/* I2C controllers. The IOP13XX uses the same block as the IOP3xx, so
162 * we just use the same device name.
163 */
164
165/* The ids are fixed up later in iop13xx_platform_init */
166static struct platform_device iop13xx_i2c_0_controller = {
167 .name = "IOP3xx-I2C",
168 .id = 0,
169 .num_resources = 2,
170 .resource = iop13xx_i2c_0_resources
171};
172
173static struct platform_device iop13xx_i2c_1_controller = {
174 .name = "IOP3xx-I2C",
175 .id = 0,
176 .num_resources = 2,
177 .resource = iop13xx_i2c_1_resources
178};
179
180static struct platform_device iop13xx_i2c_2_controller = {
181 .name = "IOP3xx-I2C",
182 .id = 0,
183 .num_resources = 2,
184 .resource = iop13xx_i2c_2_resources
185};
186
187#ifdef CONFIG_MTD_PHYSMAP
188/* PBI Flash Device
189 */
190static struct physmap_flash_data iq8134x_flash_data = {
191 .width = 2,
192};
193
194static struct resource iq8134x_flash_resource = {
195 .start = IQ81340_FLASHBASE,
196 .end = 0,
197 .flags = IORESOURCE_MEM,
198};
199
200static struct platform_device iq8134x_flash = {
201 .name = "physmap-flash",
202 .id = 0,
203 .dev = { .platform_data = &iq8134x_flash_data, },
204 .num_resources = 1,
205 .resource = &iq8134x_flash_resource,
206};
207
208static unsigned long iq8134x_probe_flash_size(void)
209{
210 uint8_t __iomem *flash_addr = ioremap(IQ81340_FLASHBASE, PAGE_SIZE);
211 int i;
212 char query[3];
213 unsigned long size = 0;
214 int width = iq8134x_flash_data.width;
215
216 if (flash_addr) {
217 /* send CFI 'query' command */
218 writew(0x98, flash_addr);
219
220 /* check for CFI compliance */
221 for (i = 0; i < 3 * width; i += width)
222 query[i / width] = readb(flash_addr + (0x10 * width) + i);
223
224 /* read the size */
225 if (memcmp(query, "QRY", 3) == 0)
226 size = 1 << readb(flash_addr + (0x27 * width));
227
228 /* send CFI 'read array' command */
229 writew(0xff, flash_addr);
230
231 iounmap(flash_addr);
232 }
233
234 return size;
235}
236#endif
237
238void __init iop13xx_map_io(void)
239{
240 /* Initialize the Static Page Table maps */
241 iotable_init(iop13xx_std_desc, ARRAY_SIZE(iop13xx_std_desc));
242}
243
244static int init_uart = 0;
245static int init_i2c = 0;
246
247void __init iop13xx_platform_init(void)
248{
249 int i;
250 u32 uart_idx, i2c_idx, plat_idx;
251 struct platform_device *iop13xx_devices[IQ81340_MAX_PLAT_DEVICES];
252
253 /* set the bases so we can read the device id */
254 iop13xx_set_atu_mmr_bases();
255
256 memset(iop13xx_devices, 0, sizeof(iop13xx_devices));
257
258 if (init_uart == IOP13XX_INIT_UART_DEFAULT) {
259 switch (iop13xx_dev_id()) {
260 /* enable both uarts on iop341 and iop342 */
261 case 0x3380:
262 case 0x3384:
263 case 0x3388:
264 case 0x338c:
265 case 0x3382:
266 case 0x3386:
267 case 0x338a:
268 case 0x338e:
269 init_uart |= IOP13XX_INIT_UART_0;
270 init_uart |= IOP13XX_INIT_UART_1;
271 break;
272 /* only enable uart 1 */
273 default:
274 init_uart |= IOP13XX_INIT_UART_1;
275 }
276 }
277
278 if (init_i2c == IOP13XX_INIT_I2C_DEFAULT) {
279 switch (iop13xx_dev_id()) {
280 /* enable all i2c units on iop341 and iop342 */
281 case 0x3380:
282 case 0x3384:
283 case 0x3388:
284 case 0x338c:
285 case 0x3382:
286 case 0x3386:
287 case 0x338a:
288 case 0x338e:
289 init_i2c |= IOP13XX_INIT_I2C_0;
290 init_i2c |= IOP13XX_INIT_I2C_1;
291 init_i2c |= IOP13XX_INIT_I2C_2;
292 break;
293 /* only enable i2c 1 and 2 */
294 default:
295 init_i2c |= IOP13XX_INIT_I2C_1;
296 init_i2c |= IOP13XX_INIT_I2C_2;
297 }
298 }
299
300 plat_idx = 0;
301 uart_idx = 0;
302 i2c_idx = 0;
303
304 /* uart 1 (if enabled) is ttyS0 */
305 if (init_uart & IOP13XX_INIT_UART_1) {
306 PRINTK("Adding uart1 to platform device list\n");
307 iop13xx_uart1.id = uart_idx++;
308 iop13xx_devices[plat_idx++] = &iop13xx_uart1;
309 }
310 if (init_uart & IOP13XX_INIT_UART_0) {
311 PRINTK("Adding uart0 to platform device list\n");
312 iop13xx_uart0.id = uart_idx++;
313 iop13xx_devices[plat_idx++] = &iop13xx_uart0;
314 }
315
316 for(i = 0; i < IQ81340_NUM_I2C; i++) {
317 if ((init_i2c & (1 << i)) && IOP13XX_SETUP_DEBUG)
318 printk("Adding i2c%d to platform device list\n", i);
319 switch(init_i2c & (1 << i)) {
320 case IOP13XX_INIT_I2C_0:
321 iop13xx_i2c_0_controller.id = i2c_idx++;
322 iop13xx_devices[plat_idx++] =
323 &iop13xx_i2c_0_controller;
324 break;
325 case IOP13XX_INIT_I2C_1:
326 iop13xx_i2c_1_controller.id = i2c_idx++;
327 iop13xx_devices[plat_idx++] =
328 &iop13xx_i2c_1_controller;
329 break;
330 case IOP13XX_INIT_I2C_2:
331 iop13xx_i2c_2_controller.id = i2c_idx++;
332 iop13xx_devices[plat_idx++] =
333 &iop13xx_i2c_2_controller;
334 break;
335 }
336 }
337
338#ifdef CONFIG_MTD_PHYSMAP
339 iq8134x_flash_resource.end = iq8134x_flash_resource.start +
340 iq8134x_probe_flash_size();
341 if (iq8134x_flash_resource.end > iq8134x_flash_resource.start)
342 iop13xx_devices[plat_idx++] = &iq8134x_flash;
343 else
344 printk(KERN_ERR "%s: Failed to probe flash size\n", __FUNCTION__);
345#endif
346
347 platform_add_devices(iop13xx_devices, plat_idx);
348}
349
350static int __init iop13xx_init_uart_setup(char *str)
351{
352 if (str) {
353 while (*str != '\0') {
354 switch(*str) {
355 case '0':
356 init_uart |= IOP13XX_INIT_UART_0;
357 break;
358 case '1':
359 init_uart |= IOP13XX_INIT_UART_1;
360 break;
361 case ',':
362 case '=':
363 break;
364 default:
365 PRINTK("\"iop13xx_init_uart\" malformed"
366 " at character: \'%c\'", *str);
367 *(str + 1) = '\0';
368 init_uart = IOP13XX_INIT_UART_DEFAULT;
369 }
370 str++;
371 }
372 }
373 return 1;
374}
375
376static int __init iop13xx_init_i2c_setup(char *str)
377{
378 if (str) {
379 while (*str != '\0') {
380 switch(*str) {
381 case '0':
382 init_i2c |= IOP13XX_INIT_I2C_0;
383 break;
384 case '1':
385 init_i2c |= IOP13XX_INIT_I2C_1;
386 break;
387 case '2':
388 init_i2c |= IOP13XX_INIT_I2C_2;
389 break;
390 case ',':
391 case '=':
392 break;
393 default:
394 PRINTK("\"iop13xx_init_i2c\" malformed"
395 " at character: \'%c\'", *str);
396 *(str + 1) = '\0';
397 init_i2c = IOP13XX_INIT_I2C_DEFAULT;
398 }
399 str++;
400 }
401 }
402 return 1;
403}
404
405__setup("iop13xx_init_uart", iop13xx_init_uart_setup);
406__setup("iop13xx_init_i2c", iop13xx_init_i2c_setup);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-19 06:02:40 -0500