1
2
3
4
5
6
7
8
9
10
11#include <linux/gpio.h>
12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/platform_device.h>
15#include <linux/pci.h>
16#include <linux/irq.h>
17#include <linux/delay.h>
18#include <linux/mtd/physmap.h>
19#include <linux/mv643xx_eth.h>
20#include <linux/i2c.h>
21#include <linux/serial_reg.h>
22#include <asm/mach-types.h>
23#include <asm/mach/arch.h>
24#include <asm/mach/pci.h>
25#include "common.h"
26#include "mpp.h"
27#include "orion5x.h"
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47#define TSP2_NOR_BOOT_BASE 0xf4000000
48#define TSP2_NOR_BOOT_SIZE SZ_256K
49
50
51
52
53
54static struct physmap_flash_data tsp2_nor_flash_data = {
55 .width = 1,
56};
57
58static struct resource tsp2_nor_flash_resource = {
59 .flags = IORESOURCE_MEM,
60 .start = TSP2_NOR_BOOT_BASE,
61 .end = TSP2_NOR_BOOT_BASE + TSP2_NOR_BOOT_SIZE - 1,
62};
63
64static struct platform_device tsp2_nor_flash = {
65 .name = "physmap-flash",
66 .id = 0,
67 .dev = {
68 .platform_data = &tsp2_nor_flash_data,
69 },
70 .num_resources = 1,
71 .resource = &tsp2_nor_flash_resource,
72};
73
74
75
76
77#define TSP2_PCI_SLOT0_OFFS 7
78#define TSP2_PCI_SLOT0_IRQ_PIN 11
79
80static void __init tsp2_pci_preinit(void)
81{
82 int pin;
83
84
85
86
87 pin = TSP2_PCI_SLOT0_IRQ_PIN;
88 if (gpio_request(pin, "PCI Int1") == 0) {
89 if (gpio_direction_input(pin) == 0) {
90 irq_set_irq_type(gpio_to_irq(pin), IRQ_TYPE_LEVEL_LOW);
91 } else {
92 printk(KERN_ERR "tsp2_pci_preinit failed "
93 "to set_irq_type pin %d\n", pin);
94 gpio_free(pin);
95 }
96 } else {
97 printk(KERN_ERR "tsp2_pci_preinit failed to "
98 "gpio_request %d\n", pin);
99 }
100}
101
102static int __init tsp2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
103{
104 int irq;
105
106
107
108
109 irq = orion5x_pci_map_irq(dev, slot, pin);
110 if (irq != -1)
111 return irq;
112
113
114
115
116 if (slot == TSP2_PCI_SLOT0_OFFS)
117 return gpio_to_irq(TSP2_PCI_SLOT0_IRQ_PIN);
118
119 return -1;
120}
121
122static struct hw_pci tsp2_pci __initdata = {
123 .nr_controllers = 2,
124 .preinit = tsp2_pci_preinit,
125 .setup = orion5x_pci_sys_setup,
126 .scan = orion5x_pci_sys_scan_bus,
127 .map_irq = tsp2_pci_map_irq,
128};
129
130static int __init tsp2_pci_init(void)
131{
132 if (machine_is_terastation_pro2())
133 pci_common_init(&tsp2_pci);
134
135 return 0;
136}
137
138subsys_initcall(tsp2_pci_init);
139
140
141
142
143
144static struct mv643xx_eth_platform_data tsp2_eth_data = {
145 .phy_addr = 0,
146};
147
148
149
150
151
152#define TSP2_RTC_GPIO 9
153
154static struct i2c_board_info __initdata tsp2_i2c_rtc = {
155 I2C_BOARD_INFO("rs5c372a", 0x32),
156};
157
158
159
160
161
162
163#define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
164
165static int tsp2_miconread(unsigned char *buf, int count)
166{
167 int i;
168 int timeout;
169
170 for (i = 0; i < count; i++) {
171 timeout = 10;
172
173 while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
174 if (--timeout == 0)
175 break;
176 udelay(1000);
177 }
178
179 if (timeout == 0)
180 break;
181 buf[i] = readl(UART1_REG(RX));
182 }
183
184
185 return i;
186}
187
188static int tsp2_miconwrite(const unsigned char *buf, int count)
189{
190 int i = 0;
191
192 while (count--) {
193 while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
194 barrier();
195 writel(buf[i++], UART1_REG(TX));
196 }
197
198 return 0;
199}
200
201static int tsp2_miconsend(const unsigned char *data, int count)
202{
203 int i;
204 unsigned char checksum = 0;
205 unsigned char recv_buf[40];
206 unsigned char send_buf[40];
207 unsigned char correct_ack[3];
208 int retry = 2;
209
210
211 for (i = 0; i < count; i++)
212 checksum -= data[i];
213
214 do {
215
216 tsp2_miconwrite(data, count);
217
218
219 tsp2_miconwrite(&checksum, 1);
220
221 if (tsp2_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
222 printk(KERN_ERR ">%s: receive failed.\n", __func__);
223
224
225 memset(&send_buf, 0xff, sizeof(send_buf));
226 tsp2_miconwrite(send_buf, sizeof(send_buf));
227
228
229 mdelay(100);
230 tsp2_miconread(recv_buf, sizeof(recv_buf));
231 } else {
232
233 correct_ack[0] = 0x01;
234 correct_ack[1] = data[1];
235 correct_ack[2] = 0x00;
236
237
238 if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
239 recv_buf[3]) & 0xFF) {
240 printk(KERN_ERR ">%s: Checksum Error : "
241 "Received data[%02x, %02x, %02x, %02x]"
242 "\n", __func__, recv_buf[0],
243 recv_buf[1], recv_buf[2], recv_buf[3]);
244 } else {
245
246 if (correct_ack[0] == recv_buf[0] &&
247 correct_ack[1] == recv_buf[1] &&
248 correct_ack[2] == recv_buf[2]) {
249
250 mdelay(10);
251
252
253 return 0;
254 }
255 }
256
257 printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
258 "Received\n", __func__);
259 }
260 } while (retry--);
261
262
263 mdelay(10);
264
265 return -1;
266}
267
268static void tsp2_power_off(void)
269{
270 const unsigned char watchdogkill[] = {0x01, 0x35, 0x00};
271 const unsigned char shutdownwait[] = {0x00, 0x0c};
272 const unsigned char poweroff[] = {0x00, 0x06};
273
274 const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
275
276 pr_info("%s: triggering power-off...\n", __func__);
277
278
279 writel(0x83, UART1_REG(LCR));
280 writel(divisor & 0xff, UART1_REG(DLL));
281 writel((divisor >> 8) & 0xff, UART1_REG(DLM));
282 writel(0x1b, UART1_REG(LCR));
283 writel(0x00, UART1_REG(IER));
284 writel(0x07, UART1_REG(FCR));
285 writel(0x00, UART1_REG(MCR));
286
287
288 tsp2_miconsend(watchdogkill, sizeof(watchdogkill)) ;
289 tsp2_miconsend(shutdownwait, sizeof(shutdownwait)) ;
290 tsp2_miconsend(poweroff, sizeof(poweroff));
291}
292
293
294
295
296static unsigned int tsp2_mpp_modes[] __initdata = {
297 MPP0_PCIE_RST_OUTn,
298 MPP1_UNUSED,
299 MPP2_UNUSED,
300 MPP3_UNUSED,
301 MPP4_NAND,
302 MPP5_NAND,
303 MPP6_NAND,
304 MPP7_NAND,
305 MPP8_GPIO,
306 MPP9_GPIO,
307 MPP10_UNUSED,
308 MPP11_GPIO,
309 MPP12_UNUSED,
310 MPP13_GPIO,
311 MPP14_GPIO,
312 MPP15_UNUSED,
313 MPP16_UART,
314 MPP17_UART,
315 MPP18_UART,
316 MPP19_UART,
317 0,
318};
319
320static void __init tsp2_init(void)
321{
322
323
324
325 orion5x_init();
326
327 orion5x_mpp_conf(tsp2_mpp_modes);
328
329
330
331
332 mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
333 ORION_MBUS_DEVBUS_BOOT_ATTR,
334 TSP2_NOR_BOOT_BASE,
335 TSP2_NOR_BOOT_SIZE);
336 platform_device_register(&tsp2_nor_flash);
337
338 orion5x_ehci0_init();
339 orion5x_eth_init(&tsp2_eth_data);
340 orion5x_i2c_init();
341 orion5x_uart0_init();
342 orion5x_uart1_init();
343
344
345 if (gpio_request(TSP2_RTC_GPIO, "rtc") == 0) {
346 if (gpio_direction_input(TSP2_RTC_GPIO) == 0)
347 tsp2_i2c_rtc.irq = gpio_to_irq(TSP2_RTC_GPIO);
348 else
349 gpio_free(TSP2_RTC_GPIO);
350 }
351 if (tsp2_i2c_rtc.irq == 0)
352 pr_warn("tsp2_init: failed to get RTC IRQ\n");
353 i2c_register_board_info(0, &tsp2_i2c_rtc, 1);
354
355
356 pm_power_off = tsp2_power_off;
357}
358
359MACHINE_START(TERASTATION_PRO2, "Buffalo Terastation Pro II/Live")
360
361 .atag_offset = 0x100,
362 .nr_irqs = ORION5X_NR_IRQS,
363 .init_machine = tsp2_init,
364 .map_io = orion5x_map_io,
365 .init_early = orion5x_init_early,
366 .init_irq = orion5x_init_irq,
367 .init_time = orion5x_timer_init,
368 .fixup = tag_fixup_mem32,
369 .restart = orion5x_restart,
370MACHINE_END
371
