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