Merge branch for-rmk-devel of git://aeryn.fluff.org.uk/bjdooks/linux into devel
[linux-2.6] / arch / arm / mach-omap2 / board-overo.c
1 /*
2  * board-overo.c (Gumstix Overo)
3  *
4  * Initial code: Steve Sakoman <steve@sakoman.com>
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * version 2 as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18  * 02110-1301 USA
19  *
20  */
21
22 #include <linux/clk.h>
23 #include <linux/delay.h>
24 #include <linux/err.h>
25 #include <linux/init.h>
26 #include <linux/io.h>
27 #include <linux/kernel.h>
28 #include <linux/platform_device.h>
29 #include <linux/i2c/twl4030.h>
30 #include <linux/regulator/machine.h>
31
32 #include <linux/mtd/mtd.h>
33 #include <linux/mtd/nand.h>
34 #include <linux/mtd/partitions.h>
35
36 #include <asm/mach-types.h>
37 #include <asm/mach/arch.h>
38 #include <asm/mach/flash.h>
39 #include <asm/mach/map.h>
40
41 #include <mach/board.h>
42 #include <mach/common.h>
43 #include <mach/gpio.h>
44 #include <mach/gpmc.h>
45 #include <mach/hardware.h>
46 #include <mach/nand.h>
47 #include <mach/usb.h>
48
49 #include "sdram-micron-mt46h32m32lf-6.h"
50 #include "mmc-twl4030.h"
51
52 #define OVERO_GPIO_BT_XGATE     15
53 #define OVERO_GPIO_W2W_NRESET   16
54 #define OVERO_GPIO_BT_NRESET    164
55 #define OVERO_GPIO_USBH_CPEN    168
56 #define OVERO_GPIO_USBH_NRESET  183
57
58 #define NAND_BLOCK_SIZE SZ_128K
59 #define GPMC_CS0_BASE  0x60
60 #define GPMC_CS_SIZE   0x30
61
62 #define OVERO_SMSC911X_CS      5
63 #define OVERO_SMSC911X_GPIO    176
64
65 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
66         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
67
68 #include <mach/mcspi.h>
69 #include <linux/spi/spi.h>
70 #include <linux/spi/ads7846.h>
71
72 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
73         .turbo_mode     = 0,
74         .single_channel = 1,    /* 0: slave, 1: master */
75 };
76
77 static int ads7846_get_pendown_state(void)
78 {
79         return !gpio_get_value(OVERO_GPIO_PENDOWN);
80 }
81
82 static struct ads7846_platform_data ads7846_config = {
83         .x_max                  = 0x0fff,
84         .y_max                  = 0x0fff,
85         .x_plate_ohms           = 180,
86         .pressure_max           = 255,
87         .debounce_max           = 10,
88         .debounce_tol           = 3,
89         .debounce_rep           = 1,
90         .get_pendown_state      = ads7846_get_pendown_state,
91         .keep_vref_on           = 1,
92 };
93
94 static struct spi_board_info overo_spi_board_info[] __initdata = {
95         {
96                 .modalias               = "ads7846",
97                 .bus_num                = 1,
98                 .chip_select            = 0,
99                 .max_speed_hz           = 1500000,
100                 .controller_data        = &ads7846_mcspi_config,
101                 .irq                    = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
102                 .platform_data          = &ads7846_config,
103         }
104 };
105
106 static void __init overo_ads7846_init(void)
107 {
108         if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
109             (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
110                 gpio_export(OVERO_GPIO_PENDOWN, 0);
111         } else {
112                 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
113                 return;
114         }
115
116         spi_register_board_info(overo_spi_board_info,
117                         ARRAY_SIZE(overo_spi_board_info));
118 }
119
120 #else
121 static inline void __init overo_ads7846_init(void) { return; }
122 #endif
123
124 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
125
126 #include <linux/smsc911x.h>
127
128 static struct resource overo_smsc911x_resources[] = {
129         {
130                 .name   = "smsc911x-memory",
131                 .flags  = IORESOURCE_MEM,
132         },
133         {
134                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
135         },
136 };
137
138 static struct smsc911x_platform_config overo_smsc911x_config = {
139         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
140         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
141         .flags          = SMSC911X_USE_32BIT ,
142         .phy_interface  = PHY_INTERFACE_MODE_MII,
143 };
144
145 static struct platform_device overo_smsc911x_device = {
146         .name           = "smsc911x",
147         .id             = -1,
148         .num_resources  = ARRAY_SIZE(overo_smsc911x_resources),
149         .resource       = &overo_smsc911x_resources,
150         .dev            = {
151                 .platform_data = &overo_smsc911x_config,
152         },
153 };
154
155 static inline void __init overo_init_smsc911x(void)
156 {
157         unsigned long cs_mem_base;
158
159         if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
160                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
161                 return;
162         }
163
164         overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
165         overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;
166
167         if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
168             (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
169                 gpio_export(OVERO_SMSC911X_GPIO, 0);
170         } else {
171                 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
172                 return;
173         }
174
175         overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
176         overo_smsc911x_resources[1].end   = 0;
177
178         platform_device_register(&overo_smsc911x_device);
179 }
180
181 #else
182 static inline void __init overo_init_smsc911x(void) { return; }
183 #endif
184
185 static struct mtd_partition overo_nand_partitions[] = {
186         {
187                 .name           = "xloader",
188                 .offset         = 0,                    /* Offset = 0x00000 */
189                 .size           = 4 * NAND_BLOCK_SIZE,
190                 .mask_flags     = MTD_WRITEABLE
191         },
192         {
193                 .name           = "uboot",
194                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
195                 .size           = 14 * NAND_BLOCK_SIZE,
196         },
197         {
198                 .name           = "uboot environment",
199                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
200                 .size           = 2 * NAND_BLOCK_SIZE,
201         },
202         {
203                 .name           = "linux",
204                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
205                 .size           = 32 * NAND_BLOCK_SIZE,
206         },
207         {
208                 .name           = "rootfs",
209                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
210                 .size           = MTDPART_SIZ_FULL,
211         },
212 };
213
214 static struct omap_nand_platform_data overo_nand_data = {
215         .parts = overo_nand_partitions,
216         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
217         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
218 };
219
220 static struct resource overo_nand_resource = {
221         .flags          = IORESOURCE_MEM,
222 };
223
224 static struct platform_device overo_nand_device = {
225         .name           = "omap2-nand",
226         .id             = -1,
227         .dev            = {
228                 .platform_data  = &overo_nand_data,
229         },
230         .num_resources  = 1,
231         .resource       = &overo_nand_resource,
232 };
233
234
235 static void __init overo_flash_init(void)
236 {
237         u8 cs = 0;
238         u8 nandcs = GPMC_CS_NUM + 1;
239
240         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
241
242         /* find out the chip-select on which NAND exists */
243         while (cs < GPMC_CS_NUM) {
244                 u32 ret = 0;
245                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
246
247                 if ((ret & 0xC00) == 0x800) {
248                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
249                         if (nandcs > GPMC_CS_NUM)
250                                 nandcs = cs;
251                 }
252                 cs++;
253         }
254
255         if (nandcs > GPMC_CS_NUM) {
256                 printk(KERN_INFO "NAND: Unable to find configuration "
257                                  "in GPMC\n ");
258                 return;
259         }
260
261         if (nandcs < GPMC_CS_NUM) {
262                 overo_nand_data.cs = nandcs;
263                 overo_nand_data.gpmc_cs_baseaddr = (void *)
264                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
265                 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
266
267                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
268                 if (platform_device_register(&overo_nand_device) < 0)
269                         printk(KERN_ERR "Unable to register NAND device\n");
270         }
271 }
272 static struct omap_uart_config overo_uart_config __initdata = {
273         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
274 };
275
276 static struct twl4030_hsmmc_info mmc[] = {
277         {
278                 .mmc            = 1,
279                 .wires          = 4,
280                 .gpio_cd        = -EINVAL,
281                 .gpio_wp        = -EINVAL,
282         },
283         {
284                 .mmc            = 2,
285                 .wires          = 4,
286                 .gpio_cd        = -EINVAL,
287                 .gpio_wp        = -EINVAL,
288                 .transceiver    = true,
289                 .ocr_mask       = 0x00100000,   /* 3.3V */
290         },
291         {}      /* Terminator */
292 };
293
294 static struct regulator_consumer_supply overo_vmmc1_supply = {
295         .supply                 = "vmmc",
296 };
297
298 static int overo_twl_gpio_setup(struct device *dev,
299                 unsigned gpio, unsigned ngpio)
300 {
301         twl4030_mmc_init(mmc);
302
303         overo_vmmc1_supply.dev = mmc[0].dev;
304
305         return 0;
306 }
307
308 static struct twl4030_gpio_platform_data overo_gpio_data = {
309         .gpio_base      = OMAP_MAX_GPIO_LINES,
310         .irq_base       = TWL4030_GPIO_IRQ_BASE,
311         .irq_end        = TWL4030_GPIO_IRQ_END,
312         .setup          = overo_twl_gpio_setup,
313 };
314
315 static struct twl4030_usb_data overo_usb_data = {
316         .usb_mode       = T2_USB_MODE_ULPI,
317 };
318
319 static struct regulator_init_data overo_vmmc1 = {
320         .constraints = {
321                 .min_uV                 = 1850000,
322                 .max_uV                 = 3150000,
323                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
324                                         | REGULATOR_MODE_STANDBY,
325                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
326                                         | REGULATOR_CHANGE_MODE
327                                         | REGULATOR_CHANGE_STATUS,
328         },
329         .num_consumer_supplies  = 1,
330         .consumer_supplies      = &overo_vmmc1_supply,
331 };
332
333 /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */
334
335 static struct twl4030_platform_data overo_twldata = {
336         .irq_base       = TWL4030_IRQ_BASE,
337         .irq_end        = TWL4030_IRQ_END,
338         .gpio           = &overo_gpio_data,
339         .usb            = &overo_usb_data,
340         .vmmc1          = &overo_vmmc1,
341 };
342
343 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
344         {
345                 I2C_BOARD_INFO("tps65950", 0x48),
346                 .flags = I2C_CLIENT_WAKE,
347                 .irq = INT_34XX_SYS_NIRQ,
348                 .platform_data = &overo_twldata,
349         },
350 };
351
352 static int __init overo_i2c_init(void)
353 {
354         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
355                         ARRAY_SIZE(overo_i2c_boardinfo));
356         /* i2c2 pins are used for gpio */
357         omap_register_i2c_bus(3, 400, NULL, 0);
358         return 0;
359 }
360
361 static void __init overo_init_irq(void)
362 {
363         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
364         omap_init_irq();
365         omap_gpio_init();
366 }
367
368 static struct platform_device overo_lcd_device = {
369         .name           = "overo_lcd",
370         .id             = -1,
371 };
372
373 static struct omap_lcd_config overo_lcd_config __initdata = {
374         .ctrl_name      = "internal",
375 };
376
377 static struct omap_board_config_kernel overo_config[] __initdata = {
378         { OMAP_TAG_UART,        &overo_uart_config },
379         { OMAP_TAG_LCD,         &overo_lcd_config },
380 };
381
382 static struct platform_device *overo_devices[] __initdata = {
383         &overo_lcd_device,
384 };
385
386 static void __init overo_init(void)
387 {
388         overo_i2c_init();
389         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
390         omap_board_config = overo_config;
391         omap_board_config_size = ARRAY_SIZE(overo_config);
392         omap_serial_init();
393         overo_flash_init();
394         usb_musb_init();
395         overo_ads7846_init();
396         overo_init_smsc911x();
397
398         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
399                           "OVERO_GPIO_W2W_NRESET") == 0) &&
400             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
401                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
402                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
403                 udelay(10);
404                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
405         } else {
406                 printk(KERN_ERR "could not obtain gpio for "
407                                         "OVERO_GPIO_W2W_NRESET\n");
408         }
409
410         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
411             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
412                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
413         else
414                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
415
416         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
417             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
418                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
419                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
420                 mdelay(6);
421                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
422         } else {
423                 printk(KERN_ERR "could not obtain gpio for "
424                                         "OVERO_GPIO_BT_NRESET\n");
425         }
426
427         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
428             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
429                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
430         else
431                 printk(KERN_ERR "could not obtain gpio for "
432                                         "OVERO_GPIO_USBH_CPEN\n");
433
434         if ((gpio_request(OVERO_GPIO_USBH_NRESET,
435                           "OVERO_GPIO_USBH_NRESET") == 0) &&
436             (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
437                 gpio_export(OVERO_GPIO_USBH_NRESET, 0);
438         else
439                 printk(KERN_ERR "could not obtain gpio for "
440                                         "OVERO_GPIO_USBH_NRESET\n");
441 }
442
443 static void __init overo_map_io(void)
444 {
445         omap2_set_globals_343x();
446         omap2_map_common_io();
447 }
448
449 MACHINE_START(OVERO, "Gumstix Overo")
450         .phys_io        = 0x48000000,
451         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
452         .boot_params    = 0x80000100,
453         .map_io         = overo_map_io,
454         .init_irq       = overo_init_irq,
455         .init_machine   = overo_init,
456         .timer          = &omap_timer,
457 MACHINE_END