276431bf1ce71ecaf2a41616688b829164807f1c
[linux-2.6.git] / arch / arm / mach-pxa / corgi.c
1 /*
2  * Support for Sharp SL-C7xx PDAs
3  * Models: SL-C700 (Corgi), SL-C750 (Shepherd), SL-C760 (Husky)
4  *
5  * Copyright (c) 2004-2005 Richard Purdie
6  *
7  * Based on Sharp's 2.4 kernel patches/lubbock.c
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  *
13  */
14
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/device.h>
18 #include <linux/major.h>
19 #include <linux/fs.h>
20 #include <linux/interrupt.h>
21 #include <linux/mmc/host.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 #include <asm/io.h>
29
30 #include <asm/mach/arch.h>
31 #include <asm/mach/map.h>
32 #include <asm/mach/irq.h>
33
34 #include <asm/arch/pxa-regs.h>
35 #include <asm/arch/irq.h>
36 #include <asm/arch/mmc.h>
37 #include <asm/arch/udc.h>
38 #include <asm/arch/corgi.h>
39
40 #include <asm/mach/sharpsl_param.h>
41 #include <asm/hardware/scoop.h>
42 #include <video/w100fb.h>
43
44 #include "generic.h"
45
46
47 /*
48  * Corgi SCOOP Device
49  */
50 static struct resource corgi_scoop_resources[] = {
51         [0] = {
52                 .start          = 0x10800000,
53                 .end            = 0x10800fff,
54                 .flags          = IORESOURCE_MEM,
55         },
56 };
57
58 static struct scoop_config corgi_scoop_setup = {
59         .io_dir         = CORGI_SCOOP_IO_DIR,
60         .io_out         = CORGI_SCOOP_IO_OUT,
61 };
62
63 struct platform_device corgiscoop_device = {
64         .name           = "sharp-scoop",
65         .id             = -1,
66         .dev            = {
67                 .platform_data  = &corgi_scoop_setup,
68         },
69         .num_resources  = ARRAY_SIZE(corgi_scoop_resources),
70         .resource       = corgi_scoop_resources,
71 };
72
73
74 /*
75  * Corgi SSP Device
76  *
77  * Set the parent as the scoop device because a lot of SSP devices
78  * also use scoop functions and this makes the power up/down order
79  * work correctly.
80  */
81 static struct platform_device corgissp_device = {
82         .name           = "corgi-ssp",
83         .dev            = {
84                 .parent = &corgiscoop_device.dev,
85         },
86         .id             = -1,
87 };
88
89
90 /*
91  * Corgi w100 Frame Buffer Device
92  */
93 static struct w100fb_mach_info corgi_fb_info = {
94         .w100fb_ssp_send        = corgi_ssp_lcdtg_send,
95         .comadj                         = -1,
96         .phadadj                        = -1,
97 };
98
99 static struct resource corgi_fb_resources[] = {
100         [0] = {
101                 .start          = 0x08000000,
102                 .end            = 0x08ffffff,
103                 .flags          = IORESOURCE_MEM,
104         },
105 };
106
107 static struct platform_device corgifb_device = {
108         .name           = "w100fb",
109         .id             = -1,
110         .dev            = {
111                 .platform_data  = &corgi_fb_info,
112                 .parent = &corgissp_device.dev,
113         },
114         .num_resources  = ARRAY_SIZE(corgi_fb_resources),
115         .resource       = corgi_fb_resources,
116 };
117
118
119 /*
120  * Corgi Backlight Device
121  */
122 static struct platform_device corgibl_device = {
123         .name           = "corgi-bl",
124         .dev            = {
125                 .parent = &corgifb_device.dev,
126         },
127         .id             = -1,
128 };
129
130
131 /*
132  * MMC/SD Device
133  *
134  * The card detect interrupt isn't debounced so we delay it by HZ/4
135  * to give the card a chance to fully insert/eject.
136  */
137 static struct mmc_detect {
138         struct timer_list detect_timer;
139         void *devid;
140 } mmc_detect;
141
142 static void mmc_detect_callback(unsigned long data)
143 {
144         mmc_detect_change(mmc_detect.devid);
145 }
146
147 static irqreturn_t corgi_mmc_detect_int(int irq, void *devid, struct pt_regs *regs)
148 {
149         mmc_detect.devid=devid;
150         mod_timer(&mmc_detect.detect_timer, jiffies + HZ/4);
151         return IRQ_HANDLED;
152 }
153
154 static int corgi_mci_init(struct device *dev, irqreturn_t (*unused_detect_int)(int, void *, struct pt_regs *), void *data)
155 {
156         int err;
157
158         /* setup GPIO for PXA25x MMC controller */
159         pxa_gpio_mode(GPIO6_MMCCLK_MD);
160         pxa_gpio_mode(GPIO8_MMCCS0_MD);
161         pxa_gpio_mode(CORGI_GPIO_nSD_DETECT | GPIO_IN);
162         pxa_gpio_mode(CORGI_GPIO_SD_PWR | GPIO_OUT);
163
164         init_timer(&mmc_detect.detect_timer);
165         mmc_detect.detect_timer.function = mmc_detect_callback;
166         mmc_detect.detect_timer.data = (unsigned long) &mmc_detect;
167
168         err = request_irq(CORGI_IRQ_GPIO_nSD_DETECT, corgi_mmc_detect_int, SA_INTERRUPT,
169                              "MMC card detect", data);
170         if (err) {
171                 printk(KERN_ERR "corgi_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
172                 return -1;
173         }
174
175         set_irq_type(CORGI_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE);
176
177         return 0;
178 }
179
180 static void corgi_mci_setpower(struct device *dev, unsigned int vdd)
181 {
182         struct pxamci_platform_data* p_d = dev->platform_data;
183
184         if (( 1 << vdd) & p_d->ocr_mask) {
185                 printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
186                 GPSR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
187         } else {
188                 printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
189                 GPCR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
190         }
191 }
192
193 static void corgi_mci_exit(struct device *dev, void *data)
194 {
195         free_irq(CORGI_IRQ_GPIO_nSD_DETECT, data);
196         del_timer(&mmc_detect.detect_timer);
197 }
198
199 static struct pxamci_platform_data corgi_mci_platform_data = {
200         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
201         .init           = corgi_mci_init,
202         .setpower       = corgi_mci_setpower,
203         .exit           = corgi_mci_exit,
204 };
205
206
207 /*
208  * USB Device Controller
209  */
210 static void corgi_udc_command(int cmd)
211 {
212         switch(cmd)     {
213         case PXA2XX_UDC_CMD_CONNECT:
214                 GPSR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
215                 break;
216         case PXA2XX_UDC_CMD_DISCONNECT:
217                 GPCR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
218                 break;
219         }
220 }
221
222 static struct pxa2xx_udc_mach_info udc_info __initdata = {
223         /* no connect GPIO; corgi can't tell connection status */
224         .udc_command            = corgi_udc_command,
225 };
226
227
228 static struct platform_device *devices[] __initdata = {
229         &corgiscoop_device,
230         &corgissp_device,
231         &corgifb_device,
232         &corgibl_device,
233 };
234
235 static void __init corgi_init(void)
236 {
237         corgi_fb_info.comadj=sharpsl_param.comadj;
238         corgi_fb_info.phadadj=sharpsl_param.phadadj;
239
240         pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
241         pxa_set_udc_info(&udc_info);
242         pxa_set_mci_info(&corgi_mci_platform_data);
243
244         platform_add_devices(devices, ARRAY_SIZE(devices));
245 }
246
247 static void __init fixup_corgi(struct machine_desc *desc,
248                 struct tag *tags, char **cmdline, struct meminfo *mi)
249 {
250         sharpsl_save_param();
251         mi->nr_banks=1;
252         mi->bank[0].start = 0xa0000000;
253         mi->bank[0].node = 0;
254         if (machine_is_corgi())
255                 mi->bank[0].size = (32*1024*1024);
256         else
257                 mi->bank[0].size = (64*1024*1024);
258 }
259
260 static void __init corgi_init_irq(void)
261 {
262         pxa_init_irq();
263 }
264
265 static struct map_desc corgi_io_desc[] __initdata = {
266 /*    virtual     physical    length      */
267 /*      { 0xf1000000, 0x08000000, 0x01000000, MT_DEVICE },*/ /* LCDC (readable for Qt driver) */
268 /*      { 0xef700000, 0x10800000, 0x00001000, MT_DEVICE },*/  /* SCOOP */
269         { 0xef800000, 0x00000000, 0x00800000, MT_DEVICE }, /* Boot Flash */
270 };
271
272 static void __init corgi_map_io(void)
273 {
274         pxa_map_io();
275         iotable_init(corgi_io_desc,ARRAY_SIZE(corgi_io_desc));
276
277         /* setup sleep mode values */
278         PWER  = 0x00000002;
279         PFER  = 0x00000000;
280         PRER  = 0x00000002;
281         PGSR0 = 0x0158C000;
282         PGSR1 = 0x00FF0080;
283         PGSR2 = 0x0001C004;
284         /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
285         PCFR |= PCFR_OPDE;
286 }
287
288 #ifdef CONFIG_MACH_CORGI
289 MACHINE_START(CORGI, "SHARP Corgi")
290         .phys_ram       = 0xa0000000,
291         .phys_io        = 0x40000000,
292         .io_pg_offst    = ((io_p2v(0x40000000) >> 18) & 0xfffc,)
293         .fixup          = fixup_corgi,
294         .map_io         = corgi_map_io,
295         .init_irq       = corgi_init_irq,
296         .init_machine   = corgi_init,
297         .timer          = &pxa_timer,
298 MACHINE_END
299 #endif
300
301 #ifdef CONFIG_MACH_SHEPHERD
302 MACHINE_START(SHEPHERD, "SHARP Shepherd")
303         .phys_ram       = 0xa0000000,
304         .phys_io        = 0x40000000,
305         .io_pg_offst    = ((io_p2v(0x40000000) >> 18) & 0xfffc,)
306         .fixup          = fixup_corgi,
307         .map_io         = corgi_map_io,
308         .init_irq       = corgi_init_irq,
309         .init_machine   = corgi_init,
310         .timer          = &pxa_timer,
311 MACHINE_END
312 #endif
313
314 #ifdef CONFIG_MACH_HUSKY
315 MACHINE_START(HUSKY, "SHARP Husky")
316         .phys_ram       = 0xa0000000,
317         .phys_io        = 0x40000000,
318         .io_pg_offst    = ((io_p2v(0x40000000) >> 18) & 0xfffc,)
319         .fixup          = fixup_corgi,
320         .map_io         = corgi_map_io,
321         .init_irq       = corgi_init_irq,
322         .init_machine   = corgi_init,
323         .timer          = &pxa_timer,
324 MACHINE_END
325 #endif
326