ARM: OMAP: Mistral ads7846 pendown state
[linux-2.6.git] / arch / arm / mach-omap1 / board-osk.c
1 /*
2  * linux/arch/arm/mach-omap1/board-osk.c
3  *
4  * Board specific init for OMAP5912 OSK
5  *
6  * Written by Dirk Behme <dirk.behme@de.bosch.com>
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of the GNU General Public License as published by the
10  * Free Software Foundation; either version 2 of the License, or (at your
11  * option) any later version.
12  *
13  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16  * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23  *
24  * You should have received a copy of the  GNU General Public License along
25  * with this program; if not, write  to the Free Software Foundation, Inc.,
26  * 675 Mass Ave, Cambridge, MA 02139, USA.
27  */
28
29 #include <linux/kernel.h>
30 #include <linux/init.h>
31 #include <linux/platform_device.h>
32 #include <linux/interrupt.h>
33
34 #include <linux/mtd/mtd.h>
35 #include <linux/mtd/partitions.h>
36
37 #include <asm/hardware.h>
38 #include <asm/mach-types.h>
39 #include <asm/mach/arch.h>
40 #include <asm/mach/map.h>
41 #include <asm/mach/flash.h>
42
43 #include <asm/arch/gpio.h>
44 #include <asm/arch/usb.h>
45 #include <asm/arch/mux.h>
46 #include <asm/arch/tc.h>
47 #include <asm/arch/common.h>
48 #include <asm/arch/mcbsp.h>
49 #include <asm/arch/omap-alsa.h>
50
51 static struct mtd_partition osk_partitions[] = {
52         /* bootloader (U-Boot, etc) in first sector */
53         {
54               .name             = "bootloader",
55               .offset           = 0,
56               .size             = SZ_128K,
57               .mask_flags       = MTD_WRITEABLE, /* force read-only */
58         },
59         /* bootloader params in the next sector */
60         {
61               .name             = "params",
62               .offset           = MTDPART_OFS_APPEND,
63               .size             = SZ_128K,
64               .mask_flags       = 0,
65         }, {
66               .name             = "kernel",
67               .offset           = MTDPART_OFS_APPEND,
68               .size             = SZ_2M,
69               .mask_flags       = 0
70         }, {
71               .name             = "filesystem",
72               .offset           = MTDPART_OFS_APPEND,
73               .size             = MTDPART_SIZ_FULL,
74               .mask_flags       = 0
75         }
76 };
77
78 static struct flash_platform_data osk_flash_data = {
79         .map_name       = "cfi_probe",
80         .width          = 2,
81         .parts          = osk_partitions,
82         .nr_parts       = ARRAY_SIZE(osk_partitions),
83 };
84
85 static struct resource osk_flash_resource = {
86         /* this is on CS3, wherever it's mapped */
87         .flags          = IORESOURCE_MEM,
88 };
89
90 static struct platform_device osk5912_flash_device = {
91         .name           = "omapflash",
92         .id             = 0,
93         .dev            = {
94                 .platform_data  = &osk_flash_data,
95         },
96         .num_resources  = 1,
97         .resource       = &osk_flash_resource,
98 };
99
100 static struct resource osk5912_smc91x_resources[] = {
101         [0] = {
102                 .start  = OMAP_OSK_ETHR_START,          /* Physical */
103                 .end    = OMAP_OSK_ETHR_START + 0xf,
104                 .flags  = IORESOURCE_MEM,
105         },
106         [1] = {
107                 .start  = OMAP_GPIO_IRQ(0),
108                 .end    = OMAP_GPIO_IRQ(0),
109                 .flags  = IORESOURCE_IRQ,
110         },
111 };
112
113 static struct platform_device osk5912_smc91x_device = {
114         .name           = "smc91x",
115         .id             = -1,
116         .num_resources  = ARRAY_SIZE(osk5912_smc91x_resources),
117         .resource       = osk5912_smc91x_resources,
118 };
119
120 static struct resource osk5912_cf_resources[] = {
121         [0] = {
122                 .start  = OMAP_GPIO_IRQ(62),
123                 .end    = OMAP_GPIO_IRQ(62),
124                 .flags  = IORESOURCE_IRQ,
125         },
126 };
127
128 static struct platform_device osk5912_cf_device = {
129         .name           = "omap_cf",
130         .id             = -1,
131         .dev = {
132                 .platform_data  = (void *) 2 /* CS2 */,
133         },
134         .num_resources  = ARRAY_SIZE(osk5912_cf_resources),
135         .resource       = osk5912_cf_resources,
136 };
137
138 #define DEFAULT_BITPERSAMPLE 16
139
140 static struct omap_mcbsp_reg_cfg mcbsp_regs = {
141         .spcr2 = FREE | FRST | GRST | XRST | XINTM(3),
142         .spcr1 = RINTM(3) | RRST,
143         .rcr2 = RPHASE | RFRLEN2(OMAP_MCBSP_WORD_8) |
144             RWDLEN2(OMAP_MCBSP_WORD_16) | RDATDLY(0),
145         .rcr1 = RFRLEN1(OMAP_MCBSP_WORD_8) | RWDLEN1(OMAP_MCBSP_WORD_16),
146         .xcr2 = XPHASE | XFRLEN2(OMAP_MCBSP_WORD_8) |
147             XWDLEN2(OMAP_MCBSP_WORD_16) | XDATDLY(0) | XFIG,
148         .xcr1 = XFRLEN1(OMAP_MCBSP_WORD_8) | XWDLEN1(OMAP_MCBSP_WORD_16),
149         .srgr1 = FWID(DEFAULT_BITPERSAMPLE - 1),
150         .srgr2 = GSYNC | CLKSP | FSGM | FPER(DEFAULT_BITPERSAMPLE * 2 - 1),
151         /*.pcr0 = FSXM | FSRM | CLKXM | CLKRM | CLKXP | CLKRP,*/ /* mcbsp: master */
152         .pcr0 = CLKXP | CLKRP,  /* mcbsp: slave */
153 };
154
155 static struct omap_alsa_codec_config alsa_config = {
156         .name                   = "OSK AIC23",
157         .mcbsp_regs_alsa        = &mcbsp_regs,
158         .codec_configure_dev    = NULL, // aic23_configure,
159         .codec_set_samplerate   = NULL, // aic23_set_samplerate,
160         .codec_clock_setup      = NULL, // aic23_clock_setup,
161         .codec_clock_on         = NULL, // aic23_clock_on,
162         .codec_clock_off        = NULL, // aic23_clock_off,
163         .get_default_samplerate = NULL, // aic23_get_default_samplerate,
164 };
165
166 static struct platform_device osk5912_mcbsp1_device = {
167         .name   = "omap_alsa_mcbsp",
168         .id     = 1,
169         .dev = {
170                 .platform_data  = &alsa_config,
171         },
172 };
173
174 static struct platform_device *osk5912_devices[] __initdata = {
175         &osk5912_flash_device,
176         &osk5912_smc91x_device,
177         &osk5912_cf_device,
178         &osk5912_mcbsp1_device,
179 };
180
181 static void __init osk_init_smc91x(void)
182 {
183         if ((omap_request_gpio(0)) < 0) {
184                 printk("Error requesting gpio 0 for smc91x irq\n");
185                 return;
186         }
187
188         /* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
189         EMIFS_CCS(1) |= 0x3;
190 }
191
192 static void __init osk_init_cf(void)
193 {
194         omap_cfg_reg(M7_1610_GPIO62);
195         if ((omap_request_gpio(62)) < 0) {
196                 printk("Error requesting gpio 62 for CF irq\n");
197                 return;
198         }
199         /* the CF I/O IRQ is really active-low */
200         set_irq_type(OMAP_GPIO_IRQ(62), IRQT_FALLING);
201 }
202
203 static void __init osk_init_irq(void)
204 {
205         omap1_init_common_hw();
206         omap_init_irq();
207         omap_gpio_init();
208         osk_init_smc91x();
209         osk_init_cf();
210 }
211
212 static struct omap_usb_config osk_usb_config __initdata = {
213         /* has usb host connector (A) ... for development it can also
214          * be used, with a NONSTANDARD gender-bending cable/dongle, as
215          * a peripheral.
216          */
217 #ifdef  CONFIG_USB_GADGET_OMAP
218         .register_dev   = 1,
219         .hmc_mode       = 0,
220 #else
221         .register_host  = 1,
222         .hmc_mode       = 16,
223         .rwc            = 1,
224 #endif
225         .pins[0]        = 2,
226 };
227
228 static struct omap_uart_config osk_uart_config __initdata = {
229         .enabled_uarts = (1 << 0),
230 };
231
232 #ifdef  CONFIG_OMAP_OSK_MISTRAL
233 static struct omap_lcd_config osk_lcd_config __initdata = {
234         .ctrl_name      = "internal",
235 };
236 #endif
237
238 static struct omap_board_config_kernel osk_config[] = {
239         { OMAP_TAG_USB,           &osk_usb_config },
240         { OMAP_TAG_UART,                &osk_uart_config },
241 #ifdef  CONFIG_OMAP_OSK_MISTRAL
242         { OMAP_TAG_LCD,                 &osk_lcd_config },
243 #endif
244 };
245
246 #ifdef  CONFIG_OMAP_OSK_MISTRAL
247
248 #include <linux/input.h>
249 #include <linux/spi/spi.h>
250 #include <linux/spi/ads7846.h>
251
252 #include <asm/arch/keypad.h>
253
254 static const int osk_keymap[] = {
255         /* KEY(col, row, code) */
256         KEY(0, 0, KEY_F1),              /* SW4 */
257         KEY(0, 3, KEY_UP),              /* (sw2/up) */
258         KEY(1, 1, KEY_LEFTCTRL),        /* SW5 */
259         KEY(1, 2, KEY_LEFT),            /* (sw2/left) */
260         KEY(2, 0, KEY_SPACE),           /* SW3 */
261         KEY(2, 1, KEY_ESC),             /* SW6 */
262         KEY(2, 2, KEY_DOWN),            /* (sw2/down) */
263         KEY(3, 2, KEY_ENTER),           /* (sw2/select) */
264         KEY(3, 3, KEY_RIGHT),           /* (sw2/right) */
265         0
266 };
267
268 static struct omap_kp_platform_data osk_kp_data = {
269         .rows   = 8,
270         .cols   = 8,
271         .keymap = (int *) osk_keymap,
272 };
273
274 static struct resource osk5912_kp_resources[] = {
275         [0] = {
276                 .start  = INT_KEYBOARD,
277                 .end    = INT_KEYBOARD,
278                 .flags  = IORESOURCE_IRQ,
279         },
280 };
281
282 static struct platform_device osk5912_kp_device = {
283         .name           = "omap-keypad",
284         .id             = -1,
285         .dev            = {
286                 .platform_data = &osk_kp_data,
287         },
288         .num_resources  = ARRAY_SIZE(osk5912_kp_resources),
289         .resource       = osk5912_kp_resources,
290 };
291
292 static struct platform_device osk5912_lcd_device = {
293         .name           = "lcd_osk",
294         .id             = -1,
295 };
296
297 static struct platform_device *mistral_devices[] __initdata = {
298         &osk5912_kp_device,
299         &osk5912_lcd_device,
300 };
301
302 static int mistral_get_pendown_state(void)
303 {
304         return !omap_get_gpio_datain(4);
305 }
306
307 static const struct ads7846_platform_data mistral_ts_info = {
308         .model                  = 7846,
309         .vref_delay_usecs       = 100,  /* internal, no capacitor */
310         .x_plate_ohms           = 419,
311         .y_plate_ohms           = 486,
312         .get_pendown_state      = mistral_get_pendown_state,
313 };
314
315 static struct spi_board_info __initdata mistral_boardinfo[] = { {
316         /* MicroWire (bus 2) CS0 has an ads7846e */
317         .modalias               = "ads7846",
318         .platform_data          = &mistral_ts_info,
319         .irq                    = OMAP_GPIO_IRQ(4),
320         .max_speed_hz           = 120000 /* max sample rate at 3V */
321                                         * 26 /* command + data + overhead */,
322         .bus_num                = 2,
323         .chip_select            = 0,
324 } };
325
326 #ifdef  CONFIG_PM
327 static irqreturn_t
328 osk_mistral_wake_interrupt(int irq, void *ignored, struct pt_regs *regs)
329 {
330         return IRQ_HANDLED;
331 }
332 #endif
333
334 static void __init osk_mistral_init(void)
335 {
336         /* NOTE:  we could actually tell if there's a Mistral board
337          * attached, e.g. by trying to read something from the ads7846.
338          * But this arch_init() code is too early for that, since we
339          * can't talk to the ads or even the i2c eeprom.
340          */
341
342         // omap_cfg_reg(P19_1610_GPIO6);        // BUSY
343         omap_cfg_reg(P20_1610_GPIO4);   // PENIRQ
344         set_irq_type(OMAP_GPIO_IRQ(4), IRQT_FALLING);
345         spi_register_board_info(mistral_boardinfo,
346                         ARRAY_SIZE(mistral_boardinfo));
347
348         /* the sideways button (SW1) is for use as a "wakeup" button */
349         omap_cfg_reg(N15_1610_MPUIO2);
350         if (omap_request_gpio(OMAP_MPUIO(2)) == 0) {
351                 int ret = 0;
352                 omap_set_gpio_direction(OMAP_MPUIO(2), 1);
353                 set_irq_type(OMAP_GPIO_IRQ(OMAP_MPUIO(2)), IRQT_RISING);
354 #ifdef  CONFIG_PM
355                 /* share the IRQ in case someone wants to use the
356                  * button for more than wakeup from system sleep.
357                  */
358                 ret = request_irq(OMAP_GPIO_IRQ(OMAP_MPUIO(2)),
359                                 &osk_mistral_wake_interrupt,
360                                 SA_SHIRQ, "mistral_wakeup",
361                                 &osk_mistral_wake_interrupt);
362                 if (ret != 0) {
363                         omap_free_gpio(OMAP_MPUIO(2));
364                         printk(KERN_ERR "OSK+Mistral: no wakeup irq, %d?\n",
365                                 ret);
366                 } else
367                         enable_irq_wake(OMAP_GPIO_IRQ(OMAP_MPUIO(2)));
368 #endif
369         } else
370                 printk(KERN_ERR "OSK+Mistral: wakeup button is awol\n");
371
372         platform_add_devices(mistral_devices, ARRAY_SIZE(mistral_devices));
373 }
374 #else
375 static void __init osk_mistral_init(void) { }
376 #endif
377
378 #define EMIFS_CS3_VAL   (0x88013141)
379
380 static void __init osk_init(void)
381 {
382         /* Workaround for wrong CS3 (NOR flash) timing
383          * There are some U-Boot versions out there which configure
384          * wrong CS3 memory timings. This mainly leads to CRC
385          * or similiar errors if you use NOR flash (e.g. with JFFS2)
386          */
387         if (EMIFS_CCS(3) != EMIFS_CS3_VAL)
388                 EMIFS_CCS(3) = EMIFS_CS3_VAL;
389
390         osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys();
391         osk_flash_resource.end += SZ_32M - 1;
392         platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));
393         omap_board_config = osk_config;
394         omap_board_config_size = ARRAY_SIZE(osk_config);
395         USB_TRANSCEIVER_CTRL_REG |= (3 << 1);
396
397         omap_serial_init();
398         osk_mistral_init();
399 }
400
401 static void __init osk_map_io(void)
402 {
403         omap1_map_common_io();
404 }
405
406 MACHINE_START(OMAP_OSK, "TI-OSK")
407         /* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */
408         .phys_io        = 0xfff00000,
409         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
410         .boot_params    = 0x10000100,
411         .map_io         = osk_map_io,
412         .init_irq       = osk_init_irq,
413         .init_machine   = osk_init,
414         .timer          = &omap_timer,
415 MACHINE_END