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mrmt.c
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1 /*
2  * Board-specific setup code for Remote Media Terminal 1 (RMT1)
3  * add-on board for the ATNGW100 Network Gateway
4  *
5  * Copyright (C) 2008 Mediama Technologies
6  * Based on ATNGW100 Network Gateway (Copyright (C) Atmel)
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  */
12 #include <linux/gpio.h>
13 #include <linux/init.h>
14 #include <linux/irq.h>
15 #include <linux/linkage.h>
16 #include <linux/platform_device.h>
17 #include <linux/types.h>
18 #include <linux/fb.h>
19 #include <linux/leds.h>
20 #include <linux/input.h>
21 #include <linux/gpio_keys.h>
22 #include <linux/atmel_serial.h>
23 #include <linux/spi/spi.h>
24 #include <linux/spi/ads7846.h>
25 
26 #include <video/atmel_lcdc.h>
27 #include <sound/atmel-ac97c.h>
28 
29 #include <asm/delay.h>
30 #include <asm/io.h>
31 #include <asm/setup.h>
32 
33 #include <mach/at32ap700x.h>
34 #include <mach/board.h>
35 #include <mach/init.h>
36 #include <mach/portmux.h>
37 
38 /* Define board-specifoic GPIO assignments */
39 #define PIN_LCD_BL GPIO_PIN_PA(28)
40 #define PWM_CH_BL 0 /* Must match with GPIO pin definition */
41 #define PIN_LCD_DISP GPIO_PIN_PA(31)
42 #define PIN_AC97_RST_N GPIO_PIN_PA(30)
43 #define PB_EXTINT_BASE 25
44 #define TS_IRQ 0
45 #define PIN_TS_EXTINT GPIO_PIN_PB(PB_EXTINT_BASE+TS_IRQ)
46 #define PIN_PB_LEFT GPIO_PIN_PB(11)
47 #define PIN_PB_RIGHT GPIO_PIN_PB(12)
48 #define PIN_PWR_SW_N GPIO_PIN_PB(14)
49 #define PIN_PWR_ON GPIO_PIN_PB(13)
50 #define PIN_ZB_RST_N GPIO_PIN_PA(21)
51 #define PIN_BT_RST GPIO_PIN_PA(22)
52 #define PIN_LED_SYS GPIO_PIN_PA(16)
53 #define PIN_LED_A GPIO_PIN_PA(19)
54 #define PIN_LED_B GPIO_PIN_PE(19)
55 
56 #ifdef CONFIG_BOARD_MRMT_LCD_LQ043T3DX0X
57 /* Sharp LQ043T3DX0x (or compatible) panel */
58 static struct fb_videomode __initdata lcd_fb_modes[] = {
59  {
60  .name = "480x272 @ 59.94Hz",
61  .refresh = 59.94,
62  .xres = 480, .yres = 272,
63  .pixclock = KHZ2PICOS(9000),
64 
65  .left_margin = 2, .right_margin = 2,
66  .upper_margin = 3, .lower_margin = 9,
67  .hsync_len = 41, .vsync_len = 1,
68 
69  .sync = 0,
70  .vmode = FB_VMODE_NONINTERLACED,
71  },
72 };
73 
74 static struct fb_monspecs __initdata lcd_fb_default_monspecs = {
75  .manufacturer = "SHA",
76  .monitor = "LQ043T3DX02",
77  .modedb = lcd_fb_modes,
78  .modedb_len = ARRAY_SIZE(lcd_fb_modes),
79  .hfmin = 14915,
80  .hfmax = 17638,
81  .vfmin = 53,
82  .vfmax = 61,
83  .dclkmax = 9260000,
84 };
85 
86 static struct atmel_lcdfb_info __initdata rmt_lcdc_data = {
87  .default_bpp = 24,
88  .default_dmacon = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
89  .default_lcdcon2 = (ATMEL_LCDC_DISTYPE_TFT
90  | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
91  | ATMEL_LCDC_INVCLK_NORMAL
92  | ATMEL_LCDC_MEMOR_BIG),
93  .lcd_wiring_mode = ATMEL_LCDC_WIRING_RGB,
94  .default_monspecs = &lcd_fb_default_monspecs,
95  .guard_time = 2,
96 };
97 #endif
98 
99 #ifdef CONFIG_BOARD_MRMT_LCD_KWH043GM08
100 /* Sharp KWH043GM08-Fxx (or compatible) panel */
101 static struct fb_videomode __initdata lcd_fb_modes[] = {
102  {
103  .name = "480x272 @ 59.94Hz",
104  .refresh = 59.94,
105  .xres = 480, .yres = 272,
106  .pixclock = KHZ2PICOS(9000),
107 
108  .left_margin = 2, .right_margin = 2,
109  .upper_margin = 3, .lower_margin = 9,
110  .hsync_len = 41, .vsync_len = 1,
111 
112  .sync = 0,
113  .vmode = FB_VMODE_NONINTERLACED,
114  },
115 };
116 
117 static struct fb_monspecs __initdata lcd_fb_default_monspecs = {
118  .manufacturer = "FOR",
119  .monitor = "KWH043GM08",
120  .modedb = lcd_fb_modes,
121  .modedb_len = ARRAY_SIZE(lcd_fb_modes),
122  .hfmin = 14915,
123  .hfmax = 17638,
124  .vfmin = 53,
125  .vfmax = 61,
126  .dclkmax = 9260000,
127 };
128 
129 static struct atmel_lcdfb_info __initdata rmt_lcdc_data = {
130  .default_bpp = 24,
131  .default_dmacon = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
132  .default_lcdcon2 = (ATMEL_LCDC_DISTYPE_TFT
133  | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
134  | ATMEL_LCDC_INVCLK_INVERTED
135  | ATMEL_LCDC_MEMOR_BIG),
136  .lcd_wiring_mode = ATMEL_LCDC_WIRING_RGB,
137  .default_monspecs = &lcd_fb_default_monspecs,
138  .guard_time = 2,
139 };
140 #endif
141 
142 #ifdef CONFIG_BOARD_MRMT_AC97
143 static struct ac97c_platform_data __initdata ac97c0_data = {
144  .reset_pin = PIN_AC97_RST_N,
145 };
146 #endif
147 
148 #ifdef CONFIG_BOARD_MRMT_UCB1400_TS
149 /* NOTE: IRQ assignment relies on kernel module parameter */
150 static struct platform_device rmt_ts_device = {
151  .name = "ucb1400_ts",
152  .id = -1,
153  }
154 };
155 #endif
156 
157 #ifdef CONFIG_BOARD_MRMT_BL_PWM
158 /* PWM LEDs: LCD Backlight, etc */
159 static struct gpio_led rmt_pwm_led[] = {
160  /* here the "gpio" is actually a PWM channel */
161  { .name = "backlight", .gpio = PWM_CH_BL, },
162 };
163 
164 static struct gpio_led_platform_data rmt_pwm_led_data = {
165  .num_leds = ARRAY_SIZE(rmt_pwm_led),
166  .leds = rmt_pwm_led,
167 };
168 
169 static struct platform_device rmt_pwm_led_dev = {
170  .name = "leds-atmel-pwm",
171  .id = -1,
172  .dev = {
173  .platform_data = &rmt_pwm_led_data,
174  },
175 };
176 #endif
177 
178 #ifdef CONFIG_BOARD_MRMT_ADS7846_TS
179 static int ads7846_pendown_state(void)
180 {
181  return !gpio_get_value( PIN_TS_EXTINT ); /* PENIRQ.*/
182 }
183 
184 static struct ads7846_platform_data ads_info = {
185  .model = 7846,
186  .keep_vref_on = 0, /* Use external VREF pin */
187  .vref_delay_usecs = 0,
188  .vref_mv = 3300, /* VREF = 3.3V */
189  .settle_delay_usecs = 800,
190  .penirq_recheck_delay_usecs = 800,
191  .x_plate_ohms = 750,
192  .y_plate_ohms = 300,
193  .pressure_max = 4096,
194  .debounce_max = 1,
195  .debounce_rep = 0,
196  .debounce_tol = (~0),
197  .get_pendown_state = ads7846_pendown_state,
198  .filter = NULL,
199  .filter_init = NULL,
200 };
201 
202 static struct spi_board_info spi01_board_info[] __initdata = {
203  {
204  .modalias = "ads7846",
205  .max_speed_hz = 31250*26,
206  .bus_num = 0,
207  .chip_select = 1,
208  .platform_data = &ads_info,
209  .irq = AT32_EXTINT(TS_IRQ),
210  },
211 };
212 #endif
213 
214 /* GPIO Keys: left, right, power, etc */
215 static const struct gpio_keys_button rmt_gpio_keys_buttons[] = {
216  [0] = {
217  .type = EV_KEY,
218  .code = KEY_POWER,
219  .gpio = PIN_PWR_SW_N,
220  .active_low = 1,
221  .desc = "power button",
222  },
223  [1] = {
224  .type = EV_KEY,
225  .code = KEY_LEFT,
226  .gpio = PIN_PB_LEFT,
227  .active_low = 1,
228  .desc = "left button",
229  },
230  [2] = {
231  .type = EV_KEY,
232  .code = KEY_RIGHT,
233  .gpio = PIN_PB_RIGHT,
234  .active_low = 1,
235  .desc = "right button",
236  },
237 };
238 
239 static const struct gpio_keys_platform_data rmt_gpio_keys_data = {
240  .nbuttons = ARRAY_SIZE(rmt_gpio_keys_buttons),
241  .buttons = (void *) rmt_gpio_keys_buttons,
242 };
243 
244 static struct platform_device rmt_gpio_keys = {
245  .name = "gpio-keys",
246  .id = -1,
247  .dev = {
248  .platform_data = (void *) &rmt_gpio_keys_data,
249  }
250 };
251 
252 #ifdef CONFIG_BOARD_MRMT_RTC_I2C
253 static struct i2c_board_info __initdata mrmt1_i2c_rtc = {
254  I2C_BOARD_INFO("s35390a", 0x30),
255  .irq = 0,
256 };
257 #endif
258 
259 static void mrmt_power_off(void)
260 {
261  /* PWR_ON=0 will force power off */
262  gpio_set_value( PIN_PWR_ON, 0 );
263 }
264 
265 static int __init mrmt1_init(void)
266 {
267  gpio_set_value( PIN_PWR_ON, 1 ); /* Ensure PWR_ON is enabled */
268 
269  pm_power_off = mrmt_power_off;
270 
271  /* Setup USARTS (other than console) */
272  at32_map_usart(2, 1, 0); /* USART 2: /dev/ttyS1, RMT1:DB9M */
273  at32_map_usart(3, 2, ATMEL_USART_RTS | ATMEL_USART_CTS);
274  /* USART 3: /dev/ttyS2, RMT1:Wireless, w/ RTS/CTS */
275  at32_add_device_usart(1);
276  at32_add_device_usart(2);
277 
278  /* Select GPIO Key pins */
279  at32_select_gpio( PIN_PWR_SW_N, AT32_GPIOF_DEGLITCH);
280  at32_select_gpio( PIN_PB_LEFT, AT32_GPIOF_DEGLITCH);
281  at32_select_gpio( PIN_PB_RIGHT, AT32_GPIOF_DEGLITCH);
282  platform_device_register(&rmt_gpio_keys);
283 
284 #ifdef CONFIG_BOARD_MRMT_RTC_I2C
285  i2c_register_board_info(0, &mrmt1_i2c_rtc, 1);
286 #endif
287 
288 #ifndef CONFIG_BOARD_MRMT_LCD_DISABLE
289  /* User "alternate" LCDC inferface on Port E & D */
290  /* NB: exclude LCDC_CC pin, as NGW100 reserves it for other use */
291  at32_add_device_lcdc(0, &rmt_lcdc_data,
292  fbmem_start, fbmem_size,
293  (ATMEL_LCDC_ALT_24BIT | ATMEL_LCDC_PE_DVAL ) );
294 #endif
295 
296 #ifdef CONFIG_BOARD_MRMT_AC97
297  at32_add_device_ac97c(0, &ac97c0_data, AC97C_BOTH);
298 #endif
299 
300 #ifdef CONFIG_BOARD_MRMT_ADS7846_TS
301  /* Select the Touchscreen interrupt pin mode */
302  at32_select_periph( GPIO_PIOB_BASE, 1 << (PB_EXTINT_BASE+TS_IRQ),
303  GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
304  irq_set_irq_type(AT32_EXTINT(TS_IRQ), IRQ_TYPE_EDGE_FALLING);
305  at32_spi_setup_slaves(0,spi01_board_info,ARRAY_SIZE(spi01_board_info));
306  spi_register_board_info(spi01_board_info,ARRAY_SIZE(spi01_board_info));
307 #endif
308 
309 #ifdef CONFIG_BOARD_MRMT_UCB1400_TS
310  /* Select the Touchscreen interrupt pin mode */
311  at32_select_periph( GPIO_PIOB_BASE, 1 << (PB_EXTINT_BASE+TS_IRQ),
312  GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
313  platform_device_register(&rmt_ts_device);
314 #endif
315 
316  at32_select_gpio( PIN_LCD_DISP, AT32_GPIOF_OUTPUT );
317  gpio_request( PIN_LCD_DISP, "LCD_DISP" );
318  gpio_direction_output( PIN_LCD_DISP, 0 ); /* LCD DISP */
319 #ifdef CONFIG_BOARD_MRMT_LCD_DISABLE
320  /* Keep Backlight and DISP off */
321  at32_select_gpio( PIN_LCD_BL, AT32_GPIOF_OUTPUT );
322  gpio_request( PIN_LCD_BL, "LCD_BL" );
323  gpio_direction_output( PIN_LCD_BL, 0 ); /* Backlight */
324 #else
325  gpio_set_value( PIN_LCD_DISP, 1 ); /* DISP asserted first */
326 #ifdef CONFIG_BOARD_MRMT_BL_PWM
327  /* Use PWM for Backlight controls */
328  at32_add_device_pwm(1 << PWM_CH_BL);
329  platform_device_register(&rmt_pwm_led_dev);
330 #else
331  /* Backlight always on */
332  udelay( 1 );
333  at32_select_gpio( PIN_LCD_BL, AT32_GPIOF_OUTPUT );
334  gpio_request( PIN_LCD_BL, "LCD_BL" );
335  gpio_direction_output( PIN_LCD_BL, 1 );
336 #endif
337 #endif
338 
339  /* Make sure BT and Zigbee modules in reset */
340  at32_select_gpio( PIN_BT_RST, AT32_GPIOF_OUTPUT );
341  gpio_request( PIN_BT_RST, "BT_RST" );
342  gpio_direction_output( PIN_BT_RST, 1 );
343  /* BT Module in Reset */
344 
345  at32_select_gpio( PIN_ZB_RST_N, AT32_GPIOF_OUTPUT );
346  gpio_request( PIN_ZB_RST_N, "ZB_RST_N" );
347  gpio_direction_output( PIN_ZB_RST_N, 0 );
348  /* XBee Module in Reset */
349 
350 #ifdef CONFIG_BOARD_MRMT_WIRELESS_ZB
351  udelay( 1000 );
352  /* Unreset the XBee Module */
353  gpio_set_value( PIN_ZB_RST_N, 1 );
354 #endif
355 #ifdef CONFIG_BOARD_MRMT_WIRELESS_BT
356  udelay( 1000 );
357  /* Unreset the BT Module */
358  gpio_set_value( PIN_BT_RST, 0 );
359 #endif
360 
361  return 0;
362 }
363 arch_initcall(mrmt1_init);
364 
365 static int __init mrmt1_early_init(void)
366 {
367  /* To maintain power-on signal in case boot loader did not already */
368  at32_select_gpio( PIN_PWR_ON, AT32_GPIOF_OUTPUT );
369  gpio_request( PIN_PWR_ON, "PIN_PWR_ON" );
370  gpio_direction_output( PIN_PWR_ON, 1 );
371 
372  return 0;
373 }
374 core_initcall(mrmt1_early_init);
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