[ARM] pxa: separate GPIOs and their mode definitions to pxa2xx-gpio.h
[linux-2.6.git] / arch / arm / mach-pxa / em-x270.c
1 /*
2  * Support for CompuLab EM-x270 platform
3  *
4  * Copyright (C) 2007 CompuLab, Ltd.
5  * Author: Mike Rapoport <mike@compulab.co.il>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11
12 #include <linux/irq.h>
13 #include <linux/platform_device.h>
14
15 #include <linux/dm9000.h>
16 #include <linux/rtc-v3020.h>
17
18 #include <linux/mtd/nand.h>
19 #include <linux/mtd/partitions.h>
20
21 #include <asm/mach-types.h>
22
23 #include <asm/mach/arch.h>
24
25 #include <asm/arch/pxa-regs.h>
26 #include <asm/arch/pxa2xx-gpio.h>
27 #include <asm/arch/pxafb.h>
28 #include <asm/arch/ohci.h>
29 #include <asm/arch/mmc.h>
30 #include <asm/arch/bitfield.h>
31
32 #include "generic.h"
33
34 /* GPIO IRQ usage */
35 #define EM_X270_MMC_PD          (105)
36 #define EM_X270_ETHIRQ          IRQ_GPIO(41)
37 #define EM_X270_MMC_IRQ         IRQ_GPIO(13)
38
39 static struct resource em_x270_dm9k_resource[] = {
40         [0] = {
41                 .start = PXA_CS2_PHYS,
42                 .end   = PXA_CS2_PHYS + 3,
43                 .flags = IORESOURCE_MEM,
44         },
45         [1] = {
46                 .start = PXA_CS2_PHYS + 8,
47                 .end   = PXA_CS2_PHYS + 8 + 0x3f,
48                 .flags = IORESOURCE_MEM,
49         },
50         [2] = {
51                 .start = EM_X270_ETHIRQ,
52                 .end   = EM_X270_ETHIRQ,
53                 .flags = IORESOURCE_IRQ,
54         }
55 };
56
57 /* for the moment we limit ourselves to 32bit IO until some
58  * better IO routines can be written and tested
59  */
60 static struct dm9000_plat_data em_x270_dm9k_platdata = {
61         .flags          = DM9000_PLATF_32BITONLY,
62 };
63
64 /* Ethernet device */
65 static struct platform_device em_x270_dm9k = {
66         .name           = "dm9000",
67         .id             = 0,
68         .num_resources  = ARRAY_SIZE(em_x270_dm9k_resource),
69         .resource       = em_x270_dm9k_resource,
70         .dev            = {
71                 .platform_data = &em_x270_dm9k_platdata,
72         }
73 };
74
75 /* audio device */
76 static struct platform_device em_x270_audio = {
77         .name           = "pxa2xx-ac97",
78         .id             = -1,
79 };
80
81 /* WM9712 touchscreen controller. Hopefully the driver will make it to
82  * the mainstream sometime */
83 static struct platform_device em_x270_ts = {
84         .name           = "wm97xx-ts",
85         .id             = -1,
86 };
87
88 /* RTC */
89 static struct resource em_x270_v3020_resource[] = {
90         [0] = {
91                 .start = PXA_CS4_PHYS,
92                 .end   = PXA_CS4_PHYS + 3,
93                 .flags = IORESOURCE_MEM,
94         },
95 };
96
97 static struct v3020_platform_data em_x270_v3020_platdata = {
98         .leftshift = 0,
99 };
100
101 static struct platform_device em_x270_rtc = {
102         .name           = "v3020",
103         .num_resources  = ARRAY_SIZE(em_x270_v3020_resource),
104         .resource       = em_x270_v3020_resource,
105         .id             = -1,
106         .dev            = {
107                 .platform_data = &em_x270_v3020_platdata,
108         }
109 };
110
111 /* NAND flash */
112 #define GPIO_NAND_CS    (11)
113 #define GPIO_NAND_RB    (56)
114
115 static inline void nand_cs_on(void)
116 {
117         GPCR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
118 }
119
120 static void nand_cs_off(void)
121 {
122         dsb();
123
124         GPSR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
125 }
126
127 /* hardware specific access to control-lines */
128 static void em_x270_nand_cmd_ctl(struct mtd_info *mtd, int dat,
129                                  unsigned int ctrl)
130 {
131         struct nand_chip *this = mtd->priv;
132         unsigned long nandaddr = (unsigned long)this->IO_ADDR_W;
133
134         dsb();
135
136         if (ctrl & NAND_CTRL_CHANGE) {
137                 if (ctrl & NAND_ALE)
138                         nandaddr |=  (1 << 3);
139                 else
140                         nandaddr &= ~(1 << 3);
141                 if (ctrl & NAND_CLE)
142                         nandaddr |=  (1 << 2);
143                 else
144                         nandaddr &= ~(1 << 2);
145                 if (ctrl & NAND_NCE)
146                         nand_cs_on();
147                 else
148                         nand_cs_off();
149         }
150
151         dsb();
152         this->IO_ADDR_W = (void __iomem *)nandaddr;
153         if (dat != NAND_CMD_NONE)
154                 writel(dat, this->IO_ADDR_W);
155
156         dsb();
157 }
158
159 /* read device ready pin */
160 static int em_x270_nand_device_ready(struct mtd_info *mtd)
161 {
162         dsb();
163
164         return GPLR(GPIO_NAND_RB) & GPIO_bit(GPIO_NAND_RB);
165 }
166
167 static struct mtd_partition em_x270_partition_info[] = {
168         [0] = {
169                 .name   = "em_x270-0",
170                 .offset = 0,
171                 .size   = SZ_4M,
172         },
173         [1] = {
174                 .name   = "em_x270-1",
175                 .offset = MTDPART_OFS_APPEND,
176                 .size   = MTDPART_SIZ_FULL
177         },
178 };
179
180 static const char *em_x270_part_probes[] = { "cmdlinepart", NULL };
181
182 struct platform_nand_data em_x270_nand_platdata = {
183         .chip = {
184                 .nr_chips = 1,
185                 .chip_offset = 0,
186                 .nr_partitions = ARRAY_SIZE(em_x270_partition_info),
187                 .partitions = em_x270_partition_info,
188                 .chip_delay = 20,
189                 .part_probe_types = em_x270_part_probes,
190         },
191         .ctrl = {
192                 .hwcontrol = 0,
193                 .dev_ready = em_x270_nand_device_ready,
194                 .select_chip = 0,
195                 .cmd_ctrl = em_x270_nand_cmd_ctl,
196         },
197 };
198
199 static struct resource em_x270_nand_resource[] = {
200         [0] = {
201                 .start = PXA_CS1_PHYS,
202                 .end   = PXA_CS1_PHYS + 12,
203                 .flags = IORESOURCE_MEM,
204         },
205 };
206
207 static struct platform_device em_x270_nand = {
208         .name           = "gen_nand",
209         .num_resources  = ARRAY_SIZE(em_x270_nand_resource),
210         .resource       = em_x270_nand_resource,
211         .id             = -1,
212         .dev            = {
213                 .platform_data = &em_x270_nand_platdata,
214         }
215 };
216
217 /* platform devices */
218 static struct platform_device *platform_devices[] __initdata = {
219         &em_x270_dm9k,
220         &em_x270_audio,
221         &em_x270_ts,
222         &em_x270_rtc,
223         &em_x270_nand,
224 };
225
226
227 /* PXA27x OHCI controller setup */
228 static int em_x270_ohci_init(struct device *dev)
229 {
230         /* Set the Power Control Polarity Low */
231         UHCHR = (UHCHR | UHCHR_PCPL) &
232                 ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE);
233
234         /* enable port 2 transiever */
235         UP2OCR = UP2OCR_HXS | UP2OCR_HXOE;
236
237         return 0;
238 }
239
240 static struct pxaohci_platform_data em_x270_ohci_platform_data = {
241         .port_mode      = PMM_PERPORT_MODE,
242         .init           = em_x270_ohci_init,
243 };
244
245
246 static int em_x270_mci_init(struct device *dev,
247                             irq_handler_t em_x270_detect_int,
248                             void *data)
249 {
250         int err;
251
252         /* setup GPIO for PXA27x MMC controller */
253         pxa_gpio_mode(GPIO32_MMCCLK_MD);
254         pxa_gpio_mode(GPIO112_MMCCMD_MD);
255         pxa_gpio_mode(GPIO92_MMCDAT0_MD);
256         pxa_gpio_mode(GPIO109_MMCDAT1_MD);
257         pxa_gpio_mode(GPIO110_MMCDAT2_MD);
258         pxa_gpio_mode(GPIO111_MMCDAT3_MD);
259
260         /* EM-X270 uses GPIO13 as SD power enable */
261         pxa_gpio_mode(EM_X270_MMC_PD | GPIO_OUT);
262
263         err = request_irq(EM_X270_MMC_IRQ, em_x270_detect_int,
264                           IRQF_DISABLED | IRQF_TRIGGER_FALLING,
265                           "MMC card detect", data);
266         if (err) {
267                 printk(KERN_ERR "%s: can't request MMC card detect IRQ: %d\n",
268                        __func__, err);
269                 return err;
270         }
271
272         return 0;
273 }
274
275 static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
276 {
277         /*
278            FIXME: current hardware implementation does not allow to
279            enable/disable MMC power. This will be fixed in next HW releases,
280            and we'll need to add implmentation here.
281         */
282         return;
283 }
284
285 static void em_x270_mci_exit(struct device *dev, void *data)
286 {
287         free_irq(EM_X270_MMC_IRQ, data);
288 }
289
290 static struct pxamci_platform_data em_x270_mci_platform_data = {
291         .ocr_mask       = MMC_VDD_28_29|MMC_VDD_29_30|MMC_VDD_30_31,
292         .init           = em_x270_mci_init,
293         .setpower       = em_x270_mci_setpower,
294         .exit           = em_x270_mci_exit,
295 };
296
297 /* LCD 480x640 */
298 static struct pxafb_mode_info em_x270_lcd_mode = {
299         .pixclock       = 50000,
300         .bpp            = 16,
301         .xres           = 480,
302         .yres           = 640,
303         .hsync_len      = 8,
304         .vsync_len      = 2,
305         .left_margin    = 8,
306         .upper_margin   = 0,
307         .right_margin   = 24,
308         .lower_margin   = 4,
309         .cmap_greyscale = 0,
310 };
311
312 static struct pxafb_mach_info em_x270_lcd = {
313         .modes          = &em_x270_lcd_mode,
314         .num_modes      = 1,
315         .cmap_inverse   = 0,
316         .cmap_static    = 0,
317         .lccr0          = LCCR0_PAS,
318         .lccr3          = LCCR3_PixClkDiv(0x01) | LCCR3_Acb(0xff),
319 };
320
321 static void __init em_x270_init(void)
322 {
323         /* setup LCD */
324         set_pxa_fb_info(&em_x270_lcd);
325
326         /* register EM-X270 platform devices */
327         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
328
329         /* set MCI and OHCI platform parameters */
330         pxa_set_mci_info(&em_x270_mci_platform_data);
331         pxa_set_ohci_info(&em_x270_ohci_platform_data);
332
333         /* setup STUART GPIOs */
334         pxa_gpio_mode(GPIO46_STRXD_MD);
335         pxa_gpio_mode(GPIO47_STTXD_MD);
336
337         /* setup BTUART GPIOs */
338         pxa_gpio_mode(GPIO42_BTRXD_MD);
339         pxa_gpio_mode(GPIO43_BTTXD_MD);
340         pxa_gpio_mode(GPIO44_BTCTS_MD);
341         pxa_gpio_mode(GPIO45_BTRTS_MD);
342
343         /* Setup interrupt for dm9000 */
344         set_irq_type(EM_X270_ETHIRQ, IRQT_RISING);
345 }
346
347 MACHINE_START(EM_X270, "Compulab EM-x270")
348         .boot_params    = 0xa0000100,
349         .phys_io        = 0x40000000,
350         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
351         .map_io         = pxa_map_io,
352         .init_irq       = pxa27x_init_irq,
353         .timer          = &pxa_timer,
354         .init_machine   = em_x270_init,
355 MACHINE_END