Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/rcu-doc-2.6
[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
31 #include <linux/mtd/mtd.h>
32 #include <linux/mtd/nand.h>
33 #include <linux/mtd/partitions.h>
34
35 #include <asm/mach-types.h>
36 #include <asm/mach/arch.h>
37 #include <asm/mach/flash.h>
38 #include <asm/mach/map.h>
39
40 #include <mach/board.h>
41 #include <mach/common.h>
42 #include <mach/gpio.h>
43 #include <mach/gpmc.h>
44 #include <mach/hardware.h>
45 #include <mach/nand.h>
46 #include <mach/usb.h>
47
48 #include "mmc-twl4030.h"
49
50 #define OVERO_GPIO_BT_XGATE     15
51 #define OVERO_GPIO_W2W_NRESET   16
52 #define OVERO_GPIO_BT_NRESET    164
53 #define OVERO_GPIO_USBH_CPEN    168
54 #define OVERO_GPIO_USBH_NRESET  183
55
56 #define NAND_BLOCK_SIZE SZ_128K
57 #define GPMC_CS0_BASE  0x60
58 #define GPMC_CS_SIZE   0x30
59
60 #define OVERO_SMSC911X_CS      5
61 #define OVERO_SMSC911X_GPIO    176
62
63 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
64         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
65
66 #include <mach/mcspi.h>
67 #include <linux/spi/spi.h>
68 #include <linux/spi/ads7846.h>
69
70 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
71         .turbo_mode     = 0,
72         .single_channel = 1,    /* 0: slave, 1: master */
73 };
74
75 static int ads7846_get_pendown_state(void)
76 {
77         return !gpio_get_value(OVERO_GPIO_PENDOWN);
78 }
79
80 static struct ads7846_platform_data ads7846_config = {
81         .x_max                  = 0x0fff,
82         .y_max                  = 0x0fff,
83         .x_plate_ohms           = 180,
84         .pressure_max           = 255,
85         .debounce_max           = 10,
86         .debounce_tol           = 3,
87         .debounce_rep           = 1,
88         .get_pendown_state      = ads7846_get_pendown_state,
89         .keep_vref_on           = 1,
90 };
91
92 static struct spi_board_info overo_spi_board_info[] __initdata = {
93         {
94                 .modalias               = "ads7846",
95                 .bus_num                = 1,
96                 .chip_select            = 0,
97                 .max_speed_hz           = 1500000,
98                 .controller_data        = &ads7846_mcspi_config,
99                 .irq                    = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
100                 .platform_data          = &ads7846_config,
101         }
102 };
103
104 static void __init overo_ads7846_init(void)
105 {
106         if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
107             (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
108                 gpio_export(OVERO_GPIO_PENDOWN, 0);
109         } else {
110                 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
111                 return;
112         }
113
114         spi_register_board_info(overo_spi_board_info,
115                         ARRAY_SIZE(overo_spi_board_info));
116 }
117
118 #else
119 static inline void __init overo_ads7846_init(void) { return; }
120 #endif
121
122 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
123
124 #include <linux/smsc911x.h>
125
126 static struct resource overo_smsc911x_resources[] = {
127         {
128                 .name   = "smsc911x-memory",
129                 .flags  = IORESOURCE_MEM,
130         },
131         {
132                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
133         },
134 };
135
136 static struct smsc911x_platform_config overo_smsc911x_config = {
137         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
138         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
139         .flags          = SMSC911X_USE_32BIT ,
140         .phy_interface  = PHY_INTERFACE_MODE_MII,
141 };
142
143 static struct platform_device overo_smsc911x_device = {
144         .name           = "smsc911x",
145         .id             = -1,
146         .num_resources  = ARRAY_SIZE(overo_smsc911x_resources),
147         .resource       = &overo_smsc911x_resources,
148         .dev            = {
149                 .platform_data = &overo_smsc911x_config,
150         },
151 };
152
153 static inline void __init overo_init_smsc911x(void)
154 {
155         unsigned long cs_mem_base;
156
157         if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
158                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
159                 return;
160         }
161
162         overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
163         overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;
164
165         if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
166             (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
167                 gpio_export(OVERO_SMSC911X_GPIO, 0);
168         } else {
169                 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
170                 return;
171         }
172
173         overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
174         overo_smsc911x_resources[1].end   = 0;
175
176         platform_device_register(&overo_smsc911x_device);
177 }
178
179 #else
180 static inline void __init overo_init_smsc911x(void) { return; }
181 #endif
182
183 static struct mtd_partition overo_nand_partitions[] = {
184         {
185                 .name           = "xloader",
186                 .offset         = 0,                    /* Offset = 0x00000 */
187                 .size           = 4 * NAND_BLOCK_SIZE,
188                 .mask_flags     = MTD_WRITEABLE
189         },
190         {
191                 .name           = "uboot",
192                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
193                 .size           = 14 * NAND_BLOCK_SIZE,
194         },
195         {
196                 .name           = "uboot environment",
197                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
198                 .size           = 2 * NAND_BLOCK_SIZE,
199         },
200         {
201                 .name           = "linux",
202                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
203                 .size           = 32 * NAND_BLOCK_SIZE,
204         },
205         {
206                 .name           = "rootfs",
207                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
208                 .size           = MTDPART_SIZ_FULL,
209         },
210 };
211
212 static struct omap_nand_platform_data overo_nand_data = {
213         .parts = overo_nand_partitions,
214         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
215         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
216 };
217
218 static struct resource overo_nand_resource = {
219         .flags          = IORESOURCE_MEM,
220 };
221
222 static struct platform_device overo_nand_device = {
223         .name           = "omap2-nand",
224         .id             = -1,
225         .dev            = {
226                 .platform_data  = &overo_nand_data,
227         },
228         .num_resources  = 1,
229         .resource       = &overo_nand_resource,
230 };
231
232
233 static void __init overo_flash_init(void)
234 {
235         u8 cs = 0;
236         u8 nandcs = GPMC_CS_NUM + 1;
237
238         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
239
240         /* find out the chip-select on which NAND exists */
241         while (cs < GPMC_CS_NUM) {
242                 u32 ret = 0;
243                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
244
245                 if ((ret & 0xC00) == 0x800) {
246                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
247                         if (nandcs > GPMC_CS_NUM)
248                                 nandcs = cs;
249                 }
250                 cs++;
251         }
252
253         if (nandcs > GPMC_CS_NUM) {
254                 printk(KERN_INFO "NAND: Unable to find configuration "
255                                  "in GPMC\n ");
256                 return;
257         }
258
259         if (nandcs < GPMC_CS_NUM) {
260                 overo_nand_data.cs = nandcs;
261                 overo_nand_data.gpmc_cs_baseaddr = (void *)
262                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
263                 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
264
265                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
266                 if (platform_device_register(&overo_nand_device) < 0)
267                         printk(KERN_ERR "Unable to register NAND device\n");
268         }
269 }
270 static struct omap_uart_config overo_uart_config __initdata = {
271         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
272 };
273
274 static struct twl4030_gpio_platform_data overo_gpio_data = {
275         .gpio_base      = OMAP_MAX_GPIO_LINES,
276         .irq_base       = TWL4030_GPIO_IRQ_BASE,
277         .irq_end        = TWL4030_GPIO_IRQ_END,
278 };
279
280 static struct twl4030_platform_data overo_twldata = {
281         .irq_base       = TWL4030_IRQ_BASE,
282         .irq_end        = TWL4030_IRQ_END,
283         .gpio           = &overo_gpio_data,
284 };
285
286 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
287         {
288                 I2C_BOARD_INFO("twl4030", 0x48),
289                 .flags = I2C_CLIENT_WAKE,
290                 .irq = INT_34XX_SYS_NIRQ,
291                 .platform_data = &overo_twldata,
292         },
293 };
294
295 static int __init overo_i2c_init(void)
296 {
297         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
298                         ARRAY_SIZE(overo_i2c_boardinfo));
299         /* i2c2 pins are used for gpio */
300         omap_register_i2c_bus(3, 400, NULL, 0);
301         return 0;
302 }
303
304 static void __init overo_init_irq(void)
305 {
306         omap2_init_common_hw(NULL);
307         omap_init_irq();
308         omap_gpio_init();
309 }
310
311 static struct platform_device overo_lcd_device = {
312         .name           = "overo_lcd",
313         .id             = -1,
314 };
315
316 static struct omap_lcd_config overo_lcd_config __initdata = {
317         .ctrl_name      = "internal",
318 };
319
320 static struct omap_board_config_kernel overo_config[] __initdata = {
321         { OMAP_TAG_UART,        &overo_uart_config },
322         { OMAP_TAG_LCD,         &overo_lcd_config },
323 };
324
325 static struct platform_device *overo_devices[] __initdata = {
326         &overo_lcd_device,
327 };
328
329 static struct twl4030_hsmmc_info mmc[] __initdata = {
330         {
331                 .mmc            = 1,
332                 .wires          = 4,
333                 .gpio_cd        = -EINVAL,
334                 .gpio_wp        = -EINVAL,
335         },
336         {
337                 .mmc            = 2,
338                 .wires          = 4,
339                 .gpio_cd        = -EINVAL,
340                 .gpio_wp        = -EINVAL,
341                 .transceiver    = true,
342         },
343         {}      /* Terminator */
344 };
345
346 static void __init overo_init(void)
347 {
348         overo_i2c_init();
349         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
350         omap_board_config = overo_config;
351         omap_board_config_size = ARRAY_SIZE(overo_config);
352         omap_serial_init();
353         twl4030_mmc_init(mmc);
354         overo_flash_init();
355         usb_musb_init();
356         overo_ads7846_init();
357         overo_init_smsc911x();
358
359         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
360                           "OVERO_GPIO_W2W_NRESET") == 0) &&
361             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
362                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
363                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
364                 udelay(10);
365                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
366         } else {
367                 printk(KERN_ERR "could not obtain gpio for "
368                                         "OVERO_GPIO_W2W_NRESET\n");
369         }
370
371         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
372             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
373                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
374         else
375                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
376
377         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
378             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
379                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
380                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
381                 mdelay(6);
382                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
383         } else {
384                 printk(KERN_ERR "could not obtain gpio for "
385                                         "OVERO_GPIO_BT_NRESET\n");
386         }
387
388         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
389             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
390                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
391         else
392                 printk(KERN_ERR "could not obtain gpio for "
393                                         "OVERO_GPIO_USBH_CPEN\n");
394
395         if ((gpio_request(OVERO_GPIO_USBH_NRESET,
396                           "OVERO_GPIO_USBH_NRESET") == 0) &&
397             (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
398                 gpio_export(OVERO_GPIO_USBH_NRESET, 0);
399         else
400                 printk(KERN_ERR "could not obtain gpio for "
401                                         "OVERO_GPIO_USBH_NRESET\n");
402 }
403
404 static void __init overo_map_io(void)
405 {
406         omap2_set_globals_343x();
407         omap2_map_common_io();
408 }
409
410 MACHINE_START(OVERO, "Gumstix Overo")
411         .phys_io        = 0x48000000,
412         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
413         .boot_params    = 0x80000100,
414         .map_io         = overo_map_io,
415         .init_irq       = overo_init_irq,
416         .init_machine   = overo_init,
417         .timer          = &omap_timer,
418 MACHINE_END