1 /*
2 * linux/arch/arm/mach-at91/board-cap9adk.c
3 *
4 * Copyright (C) 2007 Stelian Pop <stelian.pop@leadtechdesign.com>
5 * Copyright (C) 2007 Lead Tech Design <www.leadtechdesign.com>
6 * Copyright (C) 2005 SAN People
7 * Copyright (C) 2007 Atmel Corporation.
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 as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24 #include <linux/types.h>
25 #include <linux/gpio.h>
26 #include <linux/init.h>
27 #include <linux/mm.h>
28 #include <linux/module.h>
29 #include <linux/platform_device.h>
30 #include <linux/spi/spi.h>
31 #include <linux/spi/ads7846.h>
32 #include <linux/fb.h>
33 #include <linux/mtd/physmap.h>
34
35 #include <video/atmel_lcdc.h>
36
37 #include <mach/hardware.h>
38 #include <asm/setup.h>
39 #include <asm/mach-types.h>
40
41 #include <asm/mach/arch.h>
42 #include <asm/mach/map.h>
43
44 #include <mach/board.h>
45 #include <mach/at91cap9_matrix.h>
46 #include <mach/at91sam9_smc.h>
47 #include <mach/system_rev.h>
48
49 #include "sam9_smc.h"
50 #include "generic.h"
51
52
cap9adk_init_early(void)53 static void __init cap9adk_init_early(void)
54 {
55 /* Initialize processor: 12 MHz crystal */
56 at91_initialize(12000000);
57
58 /* Setup the LEDs: USER1 and USER2 LED for cpu/timer... */
59 at91_init_leds(AT91_PIN_PA10, AT91_PIN_PA11);
60 /* ... POWER LED always on */
61 at91_set_gpio_output(AT91_PIN_PC29, 1);
62
63 /* Setup the serial ports and console */
64 at91_register_uart(0, 0, 0); /* DBGU = ttyS0 */
65 at91_set_serial_console(0);
66 }
67
68 /*
69 * USB Host port
70 */
71 static struct at91_usbh_data __initdata cap9adk_usbh_data = {
72 .ports = 2,
73 .vbus_pin = {-EINVAL, -EINVAL},
74 .overcurrent_pin= {-EINVAL, -EINVAL},
75 };
76
77 /*
78 * USB HS Device port
79 */
80 static struct usba_platform_data __initdata cap9adk_usba_udc_data = {
81 .vbus_pin = AT91_PIN_PB31,
82 };
83
84 /*
85 * ADS7846 Touchscreen
86 */
87 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
ads7843_pendown_state(void)88 static int ads7843_pendown_state(void)
89 {
90 return !at91_get_gpio_value(AT91_PIN_PC4); /* Touchscreen PENIRQ */
91 }
92
93 static struct ads7846_platform_data ads_info = {
94 .model = 7843,
95 .x_min = 150,
96 .x_max = 3830,
97 .y_min = 190,
98 .y_max = 3830,
99 .vref_delay_usecs = 100,
100 .x_plate_ohms = 450,
101 .y_plate_ohms = 250,
102 .pressure_max = 15000,
103 .debounce_max = 1,
104 .debounce_rep = 0,
105 .debounce_tol = (~0),
106 .get_pendown_state = ads7843_pendown_state,
107 };
108
cap9adk_add_device_ts(void)109 static void __init cap9adk_add_device_ts(void)
110 {
111 at91_set_gpio_input(AT91_PIN_PC4, 1); /* Touchscreen PENIRQ */
112 at91_set_gpio_input(AT91_PIN_PC5, 1); /* Touchscreen BUSY */
113 }
114 #else
cap9adk_add_device_ts(void)115 static void __init cap9adk_add_device_ts(void) {}
116 #endif
117
118
119 /*
120 * SPI devices.
121 */
122 static struct spi_board_info cap9adk_spi_devices[] = {
123 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
124 { /* DataFlash card */
125 .modalias = "mtd_dataflash",
126 .chip_select = 0,
127 .max_speed_hz = 15 * 1000 * 1000,
128 .bus_num = 0,
129 },
130 #endif
131 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
132 {
133 .modalias = "ads7846",
134 .chip_select = 3, /* can be 2 or 3, depending on J2 jumper */
135 .max_speed_hz = 125000 * 26, /* (max sample rate @ 3V) * (cmd + data + overhead) */
136 .bus_num = 0,
137 .platform_data = &ads_info,
138 .irq = AT91_PIN_PC4,
139 },
140 #endif
141 };
142
143
144 /*
145 * MCI (SD/MMC)
146 */
147 static struct at91_mmc_data __initdata cap9adk_mmc_data = {
148 .wire4 = 1,
149 .det_pin = -EINVAL,
150 .wp_pin = -EINVAL,
151 .vcc_pin = -EINVAL,
152 };
153
154
155 /*
156 * MACB Ethernet device
157 */
158 static struct macb_platform_data __initdata cap9adk_macb_data = {
159 .phy_irq_pin = -EINVAL,
160 .is_rmii = 1,
161 };
162
163
164 /*
165 * NAND flash
166 */
167 static struct mtd_partition __initdata cap9adk_nand_partitions[] = {
168 {
169 .name = "NAND partition",
170 .offset = 0,
171 .size = MTDPART_SIZ_FULL,
172 },
173 };
174
175 static struct atmel_nand_data __initdata cap9adk_nand_data = {
176 .ale = 21,
177 .cle = 22,
178 .det_pin = -EINVAL,
179 .rdy_pin = -EINVAL,
180 .enable_pin = AT91_PIN_PD15,
181 .parts = cap9adk_nand_partitions,
182 .num_parts = ARRAY_SIZE(cap9adk_nand_partitions),
183 };
184
185 static struct sam9_smc_config __initdata cap9adk_nand_smc_config = {
186 .ncs_read_setup = 1,
187 .nrd_setup = 2,
188 .ncs_write_setup = 1,
189 .nwe_setup = 2,
190
191 .ncs_read_pulse = 6,
192 .nrd_pulse = 4,
193 .ncs_write_pulse = 6,
194 .nwe_pulse = 4,
195
196 .read_cycle = 8,
197 .write_cycle = 8,
198
199 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
200 .tdf_cycles = 1,
201 };
202
cap9adk_add_device_nand(void)203 static void __init cap9adk_add_device_nand(void)
204 {
205 unsigned long csa;
206
207 csa = at91_sys_read(AT91_MATRIX_EBICSA);
208 at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
209
210 cap9adk_nand_data.bus_width_16 = board_have_nand_16bit();
211 /* setup bus-width (8 or 16) */
212 if (cap9adk_nand_data.bus_width_16)
213 cap9adk_nand_smc_config.mode |= AT91_SMC_DBW_16;
214 else
215 cap9adk_nand_smc_config.mode |= AT91_SMC_DBW_8;
216
217 /* configure chip-select 3 (NAND) */
218 sam9_smc_configure(0, 3, &cap9adk_nand_smc_config);
219
220 at91_add_device_nand(&cap9adk_nand_data);
221 }
222
223
224 /*
225 * NOR flash
226 */
227 static struct mtd_partition cap9adk_nor_partitions[] = {
228 {
229 .name = "NOR partition",
230 .offset = 0,
231 .size = MTDPART_SIZ_FULL,
232 },
233 };
234
235 static struct physmap_flash_data cap9adk_nor_data = {
236 .width = 2,
237 .parts = cap9adk_nor_partitions,
238 .nr_parts = ARRAY_SIZE(cap9adk_nor_partitions),
239 };
240
241 #define NOR_BASE AT91_CHIPSELECT_0
242 #define NOR_SIZE SZ_8M
243
244 static struct resource nor_flash_resources[] = {
245 {
246 .start = NOR_BASE,
247 .end = NOR_BASE + NOR_SIZE - 1,
248 .flags = IORESOURCE_MEM,
249 }
250 };
251
252 static struct platform_device cap9adk_nor_flash = {
253 .name = "physmap-flash",
254 .id = 0,
255 .dev = {
256 .platform_data = &cap9adk_nor_data,
257 },
258 .resource = nor_flash_resources,
259 .num_resources = ARRAY_SIZE(nor_flash_resources),
260 };
261
262 static struct sam9_smc_config __initdata cap9adk_nor_smc_config = {
263 .ncs_read_setup = 2,
264 .nrd_setup = 4,
265 .ncs_write_setup = 2,
266 .nwe_setup = 4,
267
268 .ncs_read_pulse = 10,
269 .nrd_pulse = 8,
270 .ncs_write_pulse = 10,
271 .nwe_pulse = 8,
272
273 .read_cycle = 16,
274 .write_cycle = 16,
275
276 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16,
277 .tdf_cycles = 1,
278 };
279
cap9adk_add_device_nor(void)280 static __init void cap9adk_add_device_nor(void)
281 {
282 unsigned long csa;
283
284 csa = at91_sys_read(AT91_MATRIX_EBICSA);
285 at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
286
287 /* configure chip-select 0 (NOR) */
288 sam9_smc_configure(0, 0, &cap9adk_nor_smc_config);
289
290 platform_device_register(&cap9adk_nor_flash);
291 }
292
293
294 /*
295 * LCD Controller
296 */
297 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
298 static struct fb_videomode at91_tft_vga_modes[] = {
299 {
300 .name = "TX09D50VM1CCA @ 60",
301 .refresh = 60,
302 .xres = 240, .yres = 320,
303 .pixclock = KHZ2PICOS(4965),
304
305 .left_margin = 1, .right_margin = 33,
306 .upper_margin = 1, .lower_margin = 0,
307 .hsync_len = 5, .vsync_len = 1,
308
309 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
310 .vmode = FB_VMODE_NONINTERLACED,
311 },
312 };
313
314 static struct fb_monspecs at91fb_default_monspecs = {
315 .manufacturer = "HIT",
316 .monitor = "TX09D70VM1CCA",
317
318 .modedb = at91_tft_vga_modes,
319 .modedb_len = ARRAY_SIZE(at91_tft_vga_modes),
320 .hfmin = 15000,
321 .hfmax = 64000,
322 .vfmin = 50,
323 .vfmax = 150,
324 };
325
326 #define AT91CAP9_DEFAULT_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
327 | ATMEL_LCDC_DISTYPE_TFT \
328 | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
329
at91_lcdc_power_control(int on)330 static void at91_lcdc_power_control(int on)
331 {
332 if (on)
333 at91_set_gpio_value(AT91_PIN_PC0, 0); /* power up */
334 else
335 at91_set_gpio_value(AT91_PIN_PC0, 1); /* power down */
336 }
337
338 /* Driver datas */
339 static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data = {
340 .default_bpp = 16,
341 .default_dmacon = ATMEL_LCDC_DMAEN,
342 .default_lcdcon2 = AT91CAP9_DEFAULT_LCDCON2,
343 .default_monspecs = &at91fb_default_monspecs,
344 .atmel_lcdfb_power_control = at91_lcdc_power_control,
345 .guard_time = 1,
346 };
347
348 #else
349 static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data;
350 #endif
351
352
353 /*
354 * AC97
355 */
356 static struct ac97c_platform_data cap9adk_ac97_data = {
357 .reset_pin = -EINVAL,
358 };
359
360
cap9adk_board_init(void)361 static void __init cap9adk_board_init(void)
362 {
363 /* Serial */
364 at91_add_device_serial();
365 /* USB Host */
366 at91_add_device_usbh(&cap9adk_usbh_data);
367 /* USB HS */
368 at91_add_device_usba(&cap9adk_usba_udc_data);
369 /* SPI */
370 at91_add_device_spi(cap9adk_spi_devices, ARRAY_SIZE(cap9adk_spi_devices));
371 /* Touchscreen */
372 cap9adk_add_device_ts();
373 /* MMC */
374 at91_add_device_mmc(1, &cap9adk_mmc_data);
375 /* Ethernet */
376 at91_add_device_eth(&cap9adk_macb_data);
377 /* NAND */
378 cap9adk_add_device_nand();
379 /* NOR Flash */
380 cap9adk_add_device_nor();
381 /* I2C */
382 at91_add_device_i2c(NULL, 0);
383 /* LCD Controller */
384 at91_add_device_lcdc(&cap9adk_lcdc_data);
385 /* AC97 */
386 at91_add_device_ac97(&cap9adk_ac97_data);
387 }
388
389 MACHINE_START(AT91CAP9ADK, "Atmel AT91CAP9A-DK")
390 /* Maintainer: Stelian Pop <stelian.pop@leadtechdesign.com> */
391 .timer = &at91sam926x_timer,
392 .map_io = at91_map_io,
393 .init_early = cap9adk_init_early,
394 .init_irq = at91_init_irq_default,
395 .init_machine = cap9adk_board_init,
396 MACHINE_END
397