[ARM] 3078/1: lubbock platform updates, mostly mmc detection
[linux-2.6.git] / arch / arm / mach-pxa / lubbock.c
1 /*
2  *  linux/arch/arm/mach-pxa/lubbock.c
3  *
4  *  Support for the Intel DBPXA250 Development Platform.
5  *
6  *  Author:     Nicolas Pitre
7  *  Created:    Jun 15, 2001
8  *  Copyright:  MontaVista Software Inc.
9  *
10  *  This program is free software; you can redistribute it and/or modify
11  *  it under the terms of the GNU General Public License version 2 as
12  *  published by the Free Software Foundation.
13  */
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/device.h>
18 #include <linux/sysdev.h>
19 #include <linux/major.h>
20 #include <linux/fb.h>
21 #include <linux/interrupt.h>
22
23 #include <asm/setup.h>
24 #include <asm/memory.h>
25 #include <asm/mach-types.h>
26 #include <asm/hardware.h>
27 #include <asm/irq.h>
28
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
31 #include <asm/mach/irq.h>
32
33 #include <asm/hardware/sa1111.h>
34
35 #include <asm/arch/pxa-regs.h>
36 #include <asm/arch/lubbock.h>
37 #include <asm/arch/udc.h>
38 #include <asm/arch/irda.h>
39 #include <asm/arch/pxafb.h>
40 #include <asm/arch/mmc.h>
41
42 #include "generic.h"
43
44
45 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
46
47 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
48 {
49         unsigned long flags;
50
51         local_irq_save(flags);
52         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
53         local_irq_restore(flags);
54 }
55 EXPORT_SYMBOL(lubbock_set_misc_wr);
56
57 static unsigned long lubbock_irq_enabled;
58
59 static void lubbock_mask_irq(unsigned int irq)
60 {
61         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
62         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
63 }
64
65 static void lubbock_unmask_irq(unsigned int irq)
66 {
67         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
68         /* the irq can be acknowledged only if deasserted, so it's done here */
69         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
70         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
71 }
72
73 static struct irqchip lubbock_irq_chip = {
74         .ack            = lubbock_mask_irq,
75         .mask           = lubbock_mask_irq,
76         .unmask         = lubbock_unmask_irq,
77 };
78
79 static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
80                                 struct pt_regs *regs)
81 {
82         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
83         do {
84                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
85                 if (likely(pending)) {
86                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
87                         desc = irq_desc + irq;
88                         desc_handle_irq(irq, desc, regs);
89                 }
90                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
91         } while (pending);
92 }
93
94 static void __init lubbock_init_irq(void)
95 {
96         int irq;
97
98         pxa_init_irq();
99
100         /* setup extra lubbock irqs */
101         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
102                 set_irq_chip(irq, &lubbock_irq_chip);
103                 set_irq_handler(irq, do_level_IRQ);
104                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
105         }
106
107         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
108         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
109 }
110
111 #ifdef CONFIG_PM
112
113 static int lubbock_irq_resume(struct sys_device *dev)
114 {
115         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
116         return 0;
117 }
118
119 static struct sysdev_class lubbock_irq_sysclass = {
120         set_kset_name("cpld_irq"),
121         .resume = lubbock_irq_resume,
122 };
123
124 static struct sys_device lubbock_irq_device = {
125         .cls = &lubbock_irq_sysclass,
126 };
127
128 static int __init lubbock_irq_device_init(void)
129 {
130         int ret = sysdev_class_register(&lubbock_irq_sysclass);
131         if (ret == 0)
132                 ret = sysdev_register(&lubbock_irq_device);
133         return ret;
134 }
135
136 device_initcall(lubbock_irq_device_init);
137
138 #endif
139
140 static int lubbock_udc_is_connected(void)
141 {
142         return (LUB_MISC_RD & (1 << 9)) == 0;
143 }
144
145 static struct pxa2xx_udc_mach_info udc_info __initdata = {
146         .udc_is_connected       = lubbock_udc_is_connected,
147         // no D+ pullup; lubbock can't connect/disconnect in software
148 };
149
150 static struct platform_device lub_audio_device = {
151         .name           = "pxa2xx-ac97",
152         .id             = -1,
153 };
154
155 static struct resource sa1111_resources[] = {
156         [0] = {
157                 .start  = 0x10000000,
158                 .end    = 0x10001fff,
159                 .flags  = IORESOURCE_MEM,
160         },
161         [1] = {
162                 .start  = LUBBOCK_SA1111_IRQ,
163                 .end    = LUBBOCK_SA1111_IRQ,
164                 .flags  = IORESOURCE_IRQ,
165         },
166 };
167
168 static struct platform_device sa1111_device = {
169         .name           = "sa1111",
170         .id             = -1,
171         .num_resources  = ARRAY_SIZE(sa1111_resources),
172         .resource       = sa1111_resources,
173 };
174
175 static struct resource smc91x_resources[] = {
176         [0] = {
177                 .name   = "smc91x-regs",
178                 .start  = 0x0c000c00,
179                 .end    = 0x0c0fffff,
180                 .flags  = IORESOURCE_MEM,
181         },
182         [1] = {
183                 .start  = LUBBOCK_ETH_IRQ,
184                 .end    = LUBBOCK_ETH_IRQ,
185                 .flags  = IORESOURCE_IRQ,
186         },
187         [2] = {
188                 .name   = "smc91x-attrib",
189                 .start  = 0x0e000000,
190                 .end    = 0x0e0fffff,
191                 .flags  = IORESOURCE_MEM,
192         },
193 };
194
195 static struct platform_device smc91x_device = {
196         .name           = "smc91x",
197         .id             = -1,
198         .num_resources  = ARRAY_SIZE(smc91x_resources),
199         .resource       = smc91x_resources,
200 };
201
202 static struct platform_device *devices[] __initdata = {
203         &sa1111_device,
204         &lub_audio_device,
205         &smc91x_device,
206 };
207
208 static struct pxafb_mach_info sharp_lm8v31 __initdata = {
209         .pixclock       = 270000,
210         .xres           = 640,
211         .yres           = 480,
212         .bpp            = 16,
213         .hsync_len      = 1,
214         .left_margin    = 3,
215         .right_margin   = 3,
216         .vsync_len      = 1,
217         .upper_margin   = 0,
218         .lower_margin   = 0,
219         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
220         .cmap_greyscale = 0,
221         .cmap_inverse   = 0,
222         .cmap_static    = 0,
223         .lccr0          = LCCR0_SDS,
224         .lccr3          = LCCR3_PCP | LCCR3_Acb(255),
225 };
226
227 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
228
229 static void lubbock_mmc_poll(unsigned long);
230 static irqreturn_t (*mmc_detect_int)(int, void *, struct pt_regs *);
231
232 static struct timer_list mmc_timer = {
233         .function       = lubbock_mmc_poll,
234 };
235
236 static void lubbock_mmc_poll(unsigned long data)
237 {
238         unsigned long flags;
239
240         /* clear any previous irq state, then ... */
241         local_irq_save(flags);
242         LUB_IRQ_SET_CLR &= ~(1 << 0);
243         local_irq_restore(flags);
244
245         /* poll until mmc/sd card is removed */
246         if (LUB_IRQ_SET_CLR & (1 << 0))
247                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
248         else {
249                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data, NULL);
250                 enable_irq(LUBBOCK_SD_IRQ);
251         }
252 }
253
254 static irqreturn_t lubbock_detect_int(int irq, void *data, struct pt_regs *regs)
255 {
256         /* IRQ is level triggered; disable, and poll for removal */
257         disable_irq(irq);
258         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
259
260         return mmc_detect_int(irq, data, regs);
261 }
262
263 static int lubbock_mci_init(struct device *dev,
264                 irqreturn_t (*detect_int)(int, void *, struct pt_regs *),
265                 void *data)
266 {
267         /* setup GPIO for PXA25x MMC controller */
268         pxa_gpio_mode(GPIO6_MMCCLK_MD);
269         pxa_gpio_mode(GPIO8_MMCCS0_MD);
270
271         /* detect card insert/eject */
272         mmc_detect_int = detect_int;
273         init_timer(&mmc_timer);
274         mmc_timer.data = (unsigned long) data;
275         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
276                         SA_SAMPLE_RANDOM, "lubbock-sd-detect", data);
277 }
278
279 static int lubbock_mci_get_ro(struct device *dev)
280 {
281         return (LUB_MISC_RD & (1 << 2)) != 0;
282 }
283
284 static void lubbock_mci_exit(struct device *dev, void *data)
285 {
286         free_irq(LUBBOCK_SD_IRQ, data);
287         del_timer_sync(&mmc_timer);
288 }
289
290 static struct pxamci_platform_data lubbock_mci_platform_data = {
291         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
292         .detect_delay   = 1,
293         .init           = lubbock_mci_init,
294         .get_ro         = lubbock_mci_get_ro,
295         .exit           = lubbock_mci_exit,
296 };
297
298 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
299 {
300         unsigned long flags;
301
302         local_irq_save(flags);
303         if (mode & IR_SIRMODE) {
304                 LUB_MISC_WR &= ~(1 << 4);
305         } else if (mode & IR_FIRMODE) {
306                 LUB_MISC_WR |= 1 << 4;
307         }
308         local_irq_restore(flags);
309 }
310
311 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
312         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE,
313         .transceiver_mode = lubbock_irda_transceiver_mode,
314 };
315
316 static void __init lubbock_init(void)
317 {
318         pxa_set_udc_info(&udc_info);
319         set_pxa_fb_info(&sharp_lm8v31);
320         pxa_set_mci_info(&lubbock_mci_platform_data);
321         pxa_set_ficp_info(&lubbock_ficp_platform_data);
322         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
323 }
324
325 static struct map_desc lubbock_io_desc[] __initdata = {
326         {       /* CPLD */
327                 .virtual        =  LUBBOCK_FPGA_VIRT,
328                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
329                 .length         = 0x00100000,
330                 .type           = MT_DEVICE
331         }
332 };
333
334 static void __init lubbock_map_io(void)
335 {
336         pxa_map_io();
337         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
338
339         /* This enables the BTUART */
340         pxa_gpio_mode(GPIO42_BTRXD_MD);
341         pxa_gpio_mode(GPIO43_BTTXD_MD);
342         pxa_gpio_mode(GPIO44_BTCTS_MD);
343         pxa_gpio_mode(GPIO45_BTRTS_MD);
344
345         /* This is for the SMC chip select */
346         pxa_gpio_mode(GPIO79_nCS_3_MD);
347
348         /* setup sleep mode values */
349         PWER  = 0x00000002;
350         PFER  = 0x00000000;
351         PRER  = 0x00000002;
352         PGSR0 = 0x00008000;
353         PGSR1 = 0x003F0202;
354         PGSR2 = 0x0001C000;
355         PCFR |= PCFR_OPDE;
356 }
357
358 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
359         /* Maintainer: MontaVista Software Inc. */
360         .phys_ram       = 0xa0000000,
361         .phys_io        = 0x40000000,
362         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
363         .map_io         = lubbock_map_io,
364         .init_irq       = lubbock_init_irq,
365         .timer          = &pxa_timer,
366         .init_machine   = lubbock_init,
367 MACHINE_END