Linux-2.6.12-rc2
[linux-3.10.git] / arch / arm / mach-pxa / mainstone.c
1 /*
2  *  linux/arch/arm/mach-pxa/mainstone.c
3  *
4  *  Support for the Intel HCDDBBVA0 Development Platform.
5  *  (go figure how they came up with such name...)
6  *
7  *  Author:     Nicolas Pitre
8  *  Created:    Nov 05, 2002
9  *  Copyright:  MontaVista Software Inc.
10  *
11  *  This program is free software; you can redistribute it and/or modify
12  *  it under the terms of the GNU General Public License version 2 as
13  *  published by the Free Software Foundation.
14  */
15
16 #include <linux/init.h>
17 #include <linux/device.h>
18 #include <linux/interrupt.h>
19 #include <linux/sched.h>
20 #include <linux/bitops.h>
21 #include <linux/fb.h>
22
23 #include <asm/types.h>
24 #include <asm/setup.h>
25 #include <asm/memory.h>
26 #include <asm/mach-types.h>
27 #include <asm/hardware.h>
28 #include <asm/irq.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/mainstone.h>
36 #include <asm/arch/audio.h>
37 #include <asm/arch/pxafb.h>
38 #include <asm/arch/mmc.h>
39
40 #include "generic.h"
41
42
43 static unsigned long mainstone_irq_enabled;
44
45 static void mainstone_mask_irq(unsigned int irq)
46 {
47         int mainstone_irq = (irq - MAINSTONE_IRQ(0));
48         MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
49 }
50
51 static void mainstone_unmask_irq(unsigned int irq)
52 {
53         int mainstone_irq = (irq - MAINSTONE_IRQ(0));
54         /* the irq can be acknowledged only if deasserted, so it's done here */
55         MST_INTSETCLR &= ~(1 << mainstone_irq);
56         MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
57 }
58
59 static struct irqchip mainstone_irq_chip = {
60         .ack            = mainstone_mask_irq,
61         .mask           = mainstone_mask_irq,
62         .unmask         = mainstone_unmask_irq,
63 };
64
65
66 static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
67                                   struct pt_regs *regs)
68 {
69         unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
70         do {
71                 GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
72                 if (likely(pending)) {
73                         irq = MAINSTONE_IRQ(0) + __ffs(pending);
74                         desc = irq_desc + irq;
75                         desc->handle(irq, desc, regs);
76                 }
77                 pending = MST_INTSETCLR & mainstone_irq_enabled;
78         } while (pending);
79 }
80
81 static void __init mainstone_init_irq(void)
82 {
83         int irq;
84
85         pxa_init_irq();
86
87         /* setup extra Mainstone irqs */
88         for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
89                 set_irq_chip(irq, &mainstone_irq_chip);
90                 set_irq_handler(irq, do_level_IRQ);
91                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
92         }
93         set_irq_flags(MAINSTONE_IRQ(8), 0);
94         set_irq_flags(MAINSTONE_IRQ(12), 0);
95
96         MST_INTMSKENA = 0;
97         MST_INTSETCLR = 0;
98
99         set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
100         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
101 }
102
103
104 static struct resource smc91x_resources[] = {
105         [0] = {
106                 .start  = (MST_ETH_PHYS + 0x300),
107                 .end    = (MST_ETH_PHYS + 0xfffff),
108                 .flags  = IORESOURCE_MEM,
109         },
110         [1] = {
111                 .start  = MAINSTONE_IRQ(3),
112                 .end    = MAINSTONE_IRQ(3),
113                 .flags  = IORESOURCE_IRQ,
114         }
115 };
116
117 static struct platform_device smc91x_device = {
118         .name           = "smc91x",
119         .id             = 0,
120         .num_resources  = ARRAY_SIZE(smc91x_resources),
121         .resource       = smc91x_resources,
122 };
123
124 static int mst_audio_startup(snd_pcm_substream_t *substream, void *priv)
125 {
126         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
127                 MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
128         return 0;
129 }
130
131 static void mst_audio_shutdown(snd_pcm_substream_t *substream, void *priv)
132 {
133         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
134                 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
135 }
136
137 static long mst_audio_suspend_mask;
138
139 static void mst_audio_suspend(void *priv)
140 {
141         mst_audio_suspend_mask = MST_MSCWR2;
142         MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
143 }
144
145 static void mst_audio_resume(void *priv)
146 {
147         MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
148 }
149
150 static pxa2xx_audio_ops_t mst_audio_ops = {
151         .startup        = mst_audio_startup,
152         .shutdown       = mst_audio_shutdown,
153         .suspend        = mst_audio_suspend,
154         .resume         = mst_audio_resume,
155 };
156
157 static struct platform_device mst_audio_device = {
158         .name           = "pxa2xx-ac97",
159         .id             = -1,
160         .dev            = { .platform_data = &mst_audio_ops },
161 };
162
163 static void mainstone_backlight_power(int on)
164 {
165         if (on) {
166                 pxa_gpio_mode(GPIO16_PWM0_MD);
167                 pxa_set_cken(CKEN0_PWM0, 1);
168                 PWM_CTRL0 = 0;
169                 PWM_PWDUTY0 = 0x3ff;
170                 PWM_PERVAL0 = 0x3ff;
171         } else {
172                 PWM_CTRL0 = 0;
173                 PWM_PWDUTY0 = 0x0;
174                 PWM_PERVAL0 = 0x3FF;
175                 pxa_set_cken(CKEN0_PWM0, 0);
176         }
177 }
178
179 static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
180         .pixclock               = 50000,
181         .xres                   = 640,
182         .yres                   = 480,
183         .bpp                    = 16,
184         .hsync_len              = 1,
185         .left_margin            = 0x9f,
186         .right_margin           = 1,
187         .vsync_len              = 44,
188         .upper_margin           = 0,
189         .lower_margin           = 0,
190         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
191         .lccr0                  = LCCR0_Act,
192         .lccr3                  = LCCR3_PCP,
193         .pxafb_backlight_power  = mainstone_backlight_power,
194 };
195
196 static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
197         .pixclock               = 110000,
198         .xres                   = 240,
199         .yres                   = 320,
200         .bpp                    = 16,
201         .hsync_len              = 4,
202         .left_margin            = 8,
203         .right_margin           = 20,
204         .vsync_len              = 3,
205         .upper_margin           = 1,
206         .lower_margin           = 10,
207         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
208         .lccr0                  = LCCR0_Act,
209         .lccr3                  = LCCR3_PCP,
210         .pxafb_backlight_power  = mainstone_backlight_power,
211 };
212
213 static int mainstone_mci_init(struct device *dev, irqreturn_t (*mstone_detect_int)(int, void *, struct pt_regs *), void *data)
214 {
215         int err;
216
217         /*
218          * setup GPIO for PXA27x MMC controller
219          */
220         pxa_gpio_mode(GPIO32_MMCCLK_MD);
221         pxa_gpio_mode(GPIO112_MMCCMD_MD);
222         pxa_gpio_mode(GPIO92_MMCDAT0_MD);
223         pxa_gpio_mode(GPIO109_MMCDAT1_MD);
224         pxa_gpio_mode(GPIO110_MMCDAT2_MD);
225         pxa_gpio_mode(GPIO111_MMCDAT3_MD);
226
227         /* make sure SD/Memory Stick multiplexer's signals
228          * are routed to MMC controller
229          */
230         MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
231
232         err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, SA_INTERRUPT,
233                              "MMC card detect", data);
234         if (err) {
235                 printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
236                 return -1;
237         }
238
239         return 0;
240 }
241
242 static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
243 {
244         struct pxamci_platform_data* p_d = dev->platform_data;
245
246         if (( 1 << vdd) & p_d->ocr_mask) {
247                 printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
248                 MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
249                 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
250         } else {
251                 printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
252                 MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
253         }
254 }
255
256 static void mainstone_mci_exit(struct device *dev, void *data)
257 {
258         free_irq(MAINSTONE_MMC_IRQ, data);
259 }
260
261 static struct pxamci_platform_data mainstone_mci_platform_data = {
262         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
263         .init           = mainstone_mci_init,
264         .setpower       = mainstone_mci_setpower,
265         .exit           = mainstone_mci_exit,
266 };
267
268 static void __init mainstone_init(void)
269 {
270         /*
271          * On Mainstone, we route AC97_SYSCLK via GPIO45 to
272          * the audio daughter card
273          */
274         pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
275
276         platform_device_register(&smc91x_device);
277         platform_device_register(&mst_audio_device);
278
279         /* reading Mainstone's "Virtual Configuration Register"
280            might be handy to select LCD type here */
281         if (0)
282                 set_pxa_fb_info(&toshiba_ltm04c380k);
283         else
284                 set_pxa_fb_info(&toshiba_ltm035a776c);
285
286         pxa_set_mci_info(&mainstone_mci_platform_data);
287 }
288
289
290 static struct map_desc mainstone_io_desc[] __initdata = {
291   { MST_FPGA_VIRT, MST_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
292 };
293
294 static void __init mainstone_map_io(void)
295 {
296         pxa_map_io();
297         iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
298
299         /* initialize sleep mode regs (wake-up sources, etc) */
300         PGSR0 = 0x00008800;
301         PGSR1 = 0x00000002;
302         PGSR2 = 0x0001FC00;
303         PGSR3 = 0x00001F81;
304         PWER  = 0xC0000002;
305         PRER  = 0x00000002;
306         PFER  = 0x00000002;
307 }
308
309 MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
310         MAINTAINER("MontaVista Software Inc.")
311         BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
312         MAPIO(mainstone_map_io)
313         INITIRQ(mainstone_init_irq)
314         .timer          = &pxa_timer,
315         INIT_MACHINE(mainstone_init)
316 MACHINE_END