Merge branch 'linus' into x86/doc
[linux-2.6] / arch / arm / mach-omap2 / board-h4.c
1 /*
2  * linux/arch/arm/mach-omap2/board-h4.c
3  *
4  * Copyright (C) 2005 Nokia Corporation
5  * Author: Paul Mundt <paul.mundt@nokia.com>
6  *
7  * Modified from mach-omap/omap1/board-generic.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 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/platform_device.h>
17 #include <linux/mtd/mtd.h>
18 #include <linux/mtd/partitions.h>
19 #include <linux/delay.h>
20 #include <linux/workqueue.h>
21 #include <linux/input.h>
22 #include <linux/err.h>
23 #include <linux/clk.h>
24
25 #include <mach/hardware.h>
26 #include <asm/mach-types.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach/map.h>
29 #include <asm/mach/flash.h>
30
31 #include <mach/control.h>
32 #include <mach/gpio.h>
33 #include <mach/gpioexpander.h>
34 #include <mach/mux.h>
35 #include <mach/usb.h>
36 #include <mach/irda.h>
37 #include <mach/board.h>
38 #include <mach/common.h>
39 #include <mach/keypad.h>
40 #include <mach/menelaus.h>
41 #include <mach/dma.h>
42 #include <mach/gpmc.h>
43
44 #include <asm/io.h>
45
46 #define H4_FLASH_CS     0
47 #define H4_SMC91X_CS    1
48
49 static unsigned int row_gpios[6] = { 88, 89, 124, 11, 6, 96 };
50 static unsigned int col_gpios[7] = { 90, 91, 100, 36, 12, 97, 98 };
51
52 static int h4_keymap[] = {
53         KEY(0, 0, KEY_LEFT),
54         KEY(0, 1, KEY_RIGHT),
55         KEY(0, 2, KEY_A),
56         KEY(0, 3, KEY_B),
57         KEY(0, 4, KEY_C),
58         KEY(1, 0, KEY_DOWN),
59         KEY(1, 1, KEY_UP),
60         KEY(1, 2, KEY_E),
61         KEY(1, 3, KEY_F),
62         KEY(1, 4, KEY_G),
63         KEY(2, 0, KEY_ENTER),
64         KEY(2, 1, KEY_I),
65         KEY(2, 2, KEY_J),
66         KEY(2, 3, KEY_K),
67         KEY(2, 4, KEY_3),
68         KEY(3, 0, KEY_M),
69         KEY(3, 1, KEY_N),
70         KEY(3, 2, KEY_O),
71         KEY(3, 3, KEY_P),
72         KEY(3, 4, KEY_Q),
73         KEY(4, 0, KEY_R),
74         KEY(4, 1, KEY_4),
75         KEY(4, 2, KEY_T),
76         KEY(4, 3, KEY_U),
77         KEY(4, 4, KEY_ENTER),
78         KEY(5, 0, KEY_V),
79         KEY(5, 1, KEY_W),
80         KEY(5, 2, KEY_L),
81         KEY(5, 3, KEY_S),
82         KEY(5, 4, KEY_ENTER),
83         0
84 };
85
86 static struct mtd_partition h4_partitions[] = {
87         /* bootloader (U-Boot, etc) in first sector */
88         {
89               .name             = "bootloader",
90               .offset           = 0,
91               .size             = SZ_128K,
92               .mask_flags       = MTD_WRITEABLE, /* force read-only */
93         },
94         /* bootloader params in the next sector */
95         {
96               .name             = "params",
97               .offset           = MTDPART_OFS_APPEND,
98               .size             = SZ_128K,
99               .mask_flags       = 0,
100         },
101         /* kernel */
102         {
103               .name             = "kernel",
104               .offset           = MTDPART_OFS_APPEND,
105               .size             = SZ_2M,
106               .mask_flags       = 0
107         },
108         /* file system */
109         {
110               .name             = "filesystem",
111               .offset           = MTDPART_OFS_APPEND,
112               .size             = MTDPART_SIZ_FULL,
113               .mask_flags       = 0
114         }
115 };
116
117 static struct flash_platform_data h4_flash_data = {
118         .map_name       = "cfi_probe",
119         .width          = 2,
120         .parts          = h4_partitions,
121         .nr_parts       = ARRAY_SIZE(h4_partitions),
122 };
123
124 static struct resource h4_flash_resource = {
125         .flags          = IORESOURCE_MEM,
126 };
127
128 static struct platform_device h4_flash_device = {
129         .name           = "omapflash",
130         .id             = 0,
131         .dev            = {
132                 .platform_data  = &h4_flash_data,
133         },
134         .num_resources  = 1,
135         .resource       = &h4_flash_resource,
136 };
137
138 /* Select between the IrDA and aGPS module
139  */
140 static int h4_select_irda(struct device *dev, int state)
141 {
142         unsigned char expa;
143         int err = 0;
144
145         if ((err = read_gpio_expa(&expa, 0x21))) {
146                 printk(KERN_ERR "Error reading from I/O expander\n");
147                 return err;
148         }
149
150         /* 'P6' enable/disable IRDA_TX and IRDA_RX */
151         if (state & IR_SEL) {   /* IrDa */
152                 if ((err = write_gpio_expa(expa | 0x01, 0x21))) {
153                         printk(KERN_ERR "Error writing to I/O expander\n");
154                         return err;
155                 }
156         } else {
157                 if ((err = write_gpio_expa(expa & ~0x01, 0x21))) {
158                         printk(KERN_ERR "Error writing to I/O expander\n");
159                         return err;
160                 }
161         }
162         return err;
163 }
164
165 static void set_trans_mode(struct work_struct *work)
166 {
167         struct omap_irda_config *irda_config =
168                 container_of(work, struct omap_irda_config, gpio_expa.work);
169         int mode = irda_config->mode;
170         unsigned char expa;
171         int err = 0;
172
173         if ((err = read_gpio_expa(&expa, 0x20)) != 0) {
174                 printk(KERN_ERR "Error reading from I/O expander\n");
175         }
176
177         expa &= ~0x01;
178
179         if (!(mode & IR_SIRMODE)) { /* MIR/FIR */
180                 expa |= 0x01;
181         }
182
183         if ((err = write_gpio_expa(expa, 0x20)) != 0) {
184                 printk(KERN_ERR "Error writing to I/O expander\n");
185         }
186 }
187
188 static int h4_transceiver_mode(struct device *dev, int mode)
189 {
190         struct omap_irda_config *irda_config = dev->platform_data;
191
192         irda_config->mode = mode;
193         cancel_delayed_work(&irda_config->gpio_expa);
194         PREPARE_DELAYED_WORK(&irda_config->gpio_expa, set_trans_mode);
195         schedule_delayed_work(&irda_config->gpio_expa, 0);
196
197         return 0;
198 }
199
200 static struct omap_irda_config h4_irda_data = {
201         .transceiver_cap        = IR_SIRMODE | IR_MIRMODE | IR_FIRMODE,
202         .transceiver_mode       = h4_transceiver_mode,
203         .select_irda            = h4_select_irda,
204         .rx_channel             = OMAP24XX_DMA_UART3_RX,
205         .tx_channel             = OMAP24XX_DMA_UART3_TX,
206         .dest_start             = OMAP_UART3_BASE,
207         .src_start              = OMAP_UART3_BASE,
208         .tx_trigger             = OMAP24XX_DMA_UART3_TX,
209         .rx_trigger             = OMAP24XX_DMA_UART3_RX,
210 };
211
212 static struct resource h4_irda_resources[] = {
213         [0] = {
214                 .start  = INT_24XX_UART3_IRQ,
215                 .end    = INT_24XX_UART3_IRQ,
216                 .flags  = IORESOURCE_IRQ,
217         },
218 };
219
220 static struct platform_device h4_irda_device = {
221         .name           = "omapirda",
222         .id             = -1,
223         .dev            = {
224                 .platform_data  = &h4_irda_data,
225         },
226         .num_resources  = 1,
227         .resource       = h4_irda_resources,
228 };
229
230 static struct omap_kp_platform_data h4_kp_data = {
231         .rows           = 6,
232         .cols           = 7,
233         .keymap         = h4_keymap,
234         .keymapsize     = ARRAY_SIZE(h4_keymap),
235         .rep            = 1,
236         .row_gpios      = row_gpios,
237         .col_gpios      = col_gpios,
238 };
239
240 static struct platform_device h4_kp_device = {
241         .name           = "omap-keypad",
242         .id             = -1,
243         .dev            = {
244                 .platform_data = &h4_kp_data,
245         },
246 };
247
248 static struct platform_device h4_lcd_device = {
249         .name           = "lcd_h4",
250         .id             = -1,
251 };
252
253 static struct platform_device *h4_devices[] __initdata = {
254         &h4_flash_device,
255         &h4_irda_device,
256         &h4_kp_device,
257         &h4_lcd_device,
258 };
259
260 /* 2420 Sysboot setup (2430 is different) */
261 static u32 get_sysboot_value(void)
262 {
263         return (omap_ctrl_readl(OMAP24XX_CONTROL_STATUS) &
264                 (OMAP2_SYSBOOT_5_MASK | OMAP2_SYSBOOT_4_MASK |
265                  OMAP2_SYSBOOT_3_MASK | OMAP2_SYSBOOT_2_MASK |
266                  OMAP2_SYSBOOT_1_MASK | OMAP2_SYSBOOT_0_MASK));
267 }
268
269 /* H4-2420's always used muxed mode, H4-2422's always use non-muxed
270  *
271  * Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
272  *  correctly.  The macro needs to look at production_id not just hawkeye.
273  */
274 static u32 is_gpmc_muxed(void)
275 {
276         u32 mux;
277         mux = get_sysboot_value();
278         if ((mux & 0xF) == 0xd)
279                 return 1;       /* NAND config (could be either) */
280         if (mux & 0x2)          /* if mux'ed */
281                 return 1;
282         else
283                 return 0;
284 }
285
286 static inline void __init h4_init_debug(void)
287 {
288         int eth_cs;
289         unsigned long cs_mem_base;
290         unsigned int muxed, rate;
291         struct clk *gpmc_fck;
292
293         eth_cs  = H4_SMC91X_CS;
294
295         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
296         if (IS_ERR(gpmc_fck)) {
297                 WARN_ON(1);
298                 return;
299         }
300
301         clk_enable(gpmc_fck);
302         rate = clk_get_rate(gpmc_fck);
303         clk_disable(gpmc_fck);
304         clk_put(gpmc_fck);
305
306         if (is_gpmc_muxed())
307                 muxed = 0x200;
308         else
309                 muxed = 0;
310
311         /* Make sure CS1 timings are correct */
312         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
313                           0x00011000 | muxed);
314
315         if (rate >= 160000000) {
316                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
317                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
318                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
319                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
320                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
321         } else if (rate >= 130000000) {
322                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
323                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
324                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
325                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
326                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
327         } else {/* rate = 100000000 */
328                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
329                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
330                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
331                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
332                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
333         }
334
335         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
336                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
337                 goto out;
338         }
339
340         udelay(100);
341
342         omap_cfg_reg(M15_24XX_GPIO92);
343         if (debug_card_init(cs_mem_base, OMAP24XX_ETHR_GPIO_IRQ) < 0)
344                 gpmc_cs_free(eth_cs);
345
346 out:
347         clk_disable(gpmc_fck);
348         clk_put(gpmc_fck);
349 }
350
351 static void __init h4_init_flash(void)
352 {
353         unsigned long base;
354
355         if (gpmc_cs_request(H4_FLASH_CS, SZ_64M, &base) < 0) {
356                 printk("Can't request GPMC CS for flash\n");
357                 return;
358         }
359         h4_flash_resource.start = base;
360         h4_flash_resource.end   = base + SZ_64M - 1;
361 }
362
363 static void __init omap_h4_init_irq(void)
364 {
365         omap2_init_common_hw();
366         omap_init_irq();
367         omap_gpio_init();
368         h4_init_flash();
369 }
370
371 static struct omap_uart_config h4_uart_config __initdata = {
372         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
373 };
374
375 static struct omap_mmc_config h4_mmc_config __initdata = {
376         .mmc [0] = {
377                 .enabled        = 1,
378                 .wire4          = 1,
379                 .wp_pin         = -1,
380                 .power_pin      = -1,
381                 .switch_pin     = -1,
382         },
383 };
384
385 static struct omap_lcd_config h4_lcd_config __initdata = {
386         .ctrl_name      = "internal",
387 };
388
389 static struct omap_board_config_kernel h4_config[] = {
390         { OMAP_TAG_UART,        &h4_uart_config },
391         { OMAP_TAG_MMC,         &h4_mmc_config },
392         { OMAP_TAG_LCD,         &h4_lcd_config },
393 };
394
395 static void __init omap_h4_init(void)
396 {
397         /*
398          * Make sure the serial ports are muxed on at this point.
399          * You have to mux them off in device drivers later on
400          * if not needed.
401          */
402 #if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
403         omap_cfg_reg(K15_24XX_UART3_TX);
404         omap_cfg_reg(K14_24XX_UART3_RX);
405 #endif
406
407 #if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
408         if (omap_has_menelaus()) {
409                 row_gpios[5] = 0;
410                 col_gpios[2] = 15;
411                 col_gpios[6] = 18;
412         }
413 #endif
414
415         platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
416         omap_board_config = h4_config;
417         omap_board_config_size = ARRAY_SIZE(h4_config);
418         omap_serial_init();
419 }
420
421 static void __init omap_h4_map_io(void)
422 {
423         omap2_set_globals_242x();
424         omap2_map_common_io();
425 }
426
427 MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
428         /* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
429         .phys_io        = 0x48000000,
430         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
431         .boot_params    = 0x80000100,
432         .map_io         = omap_h4_map_io,
433         .init_irq       = omap_h4_init_irq,
434         .init_machine   = omap_h4_init,
435         .timer          = &omap_timer,
436 MACHINE_END