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/pwm.h>
21#include <linux/leds_pwm.h>
22#include <linux/input.h>
23#include <linux/gpio_keys.h>
24#include <linux/atmel_serial.h>
25#include <linux/spi/spi.h>
26#include <linux/spi/ads7846.h>
27
28#include <video/atmel_lcdc.h>
29#include <sound/atmel-ac97c.h>
30
31#include <asm/delay.h>
32#include <asm/io.h>
33#include <asm/setup.h>
34
35#include <mach/at32ap700x.h>
36#include <mach/board.h>
37#include <mach/init.h>
38#include <mach/portmux.h>
39
40/* Define board-specifoic GPIO assignments */
41#define PIN_LCD_BL	GPIO_PIN_PA(28)
42#define PWM_CH_BL	0	/* Must match with GPIO pin definition */
43#define PIN_LCD_DISP	GPIO_PIN_PA(31)
44#define	PIN_AC97_RST_N	GPIO_PIN_PA(30)
45#define PB_EXTINT_BASE	25
46#define TS_IRQ		0
47#define PIN_TS_EXTINT	GPIO_PIN_PB(PB_EXTINT_BASE+TS_IRQ)
48#define PIN_PB_LEFT	GPIO_PIN_PB(11)
49#define PIN_PB_RIGHT	GPIO_PIN_PB(12)
50#define PIN_PWR_SW_N	GPIO_PIN_PB(14)
51#define PIN_PWR_ON	GPIO_PIN_PB(13)
52#define PIN_ZB_RST_N	GPIO_PIN_PA(21)
53#define PIN_BT_RST	GPIO_PIN_PA(22)
54#define PIN_LED_SYS	GPIO_PIN_PA(16)
55#define PIN_LED_A	GPIO_PIN_PA(19)
56#define PIN_LED_B	GPIO_PIN_PE(19)
57
58#ifdef CONFIG_BOARD_MRMT_LCD_LQ043T3DX0X
59/* Sharp LQ043T3DX0x (or compatible) panel */
60static struct fb_videomode __initdata lcd_fb_modes[] = {
61	{
62		.name		= "480x272 @ 59.94Hz",
63		.refresh	= 59.94,
64		.xres		= 480,		.yres		= 272,
65		.pixclock	= KHZ2PICOS(9000),
66
67		.left_margin	= 2,		.right_margin	= 2,
68		.upper_margin	= 3,		.lower_margin	= 9,
69		.hsync_len	= 41,		.vsync_len	= 1,
70
71		.sync		= 0,
72		.vmode		= FB_VMODE_NONINTERLACED,
73	},
74};
75
76static struct fb_monspecs __initdata lcd_fb_default_monspecs = {
77	.manufacturer		= "SHA",
78	.monitor		= "LQ043T3DX02",
79	.modedb			= lcd_fb_modes,
80	.modedb_len		= ARRAY_SIZE(lcd_fb_modes),
81	.hfmin			= 14915,
82	.hfmax			= 17638,
83	.vfmin			= 53,
84	.vfmax			= 61,
85	.dclkmax		= 9260000,
86};
87
88static struct atmel_lcdfb_pdata __initdata rmt_lcdc_data = {
89	.default_bpp		= 24,
90	.default_dmacon		= ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
91	.default_lcdcon2	= (ATMEL_LCDC_DISTYPE_TFT
92				   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
93				   | ATMEL_LCDC_INVCLK_NORMAL
94				   | ATMEL_LCDC_MEMOR_BIG),
95	.lcd_wiring_mode	= ATMEL_LCDC_WIRING_RGB,
96	.default_monspecs	= &lcd_fb_default_monspecs,
97	.guard_time		= 2,
98};
99#endif
100
101#ifdef CONFIG_BOARD_MRMT_LCD_KWH043GM08
102/* Sharp KWH043GM08-Fxx (or compatible) panel */
103static struct fb_videomode __initdata lcd_fb_modes[] = {
104	{
105		.name		= "480x272 @ 59.94Hz",
106		.refresh	= 59.94,
107		.xres		= 480,		.yres		= 272,
108		.pixclock	= KHZ2PICOS(9000),
109
110		.left_margin	= 2,		.right_margin	= 2,
111		.upper_margin	= 3,		.lower_margin	= 9,
112		.hsync_len	= 41,		.vsync_len	= 1,
113
114		.sync		= 0,
115		.vmode		= FB_VMODE_NONINTERLACED,
116	},
117};
118
119static struct fb_monspecs __initdata lcd_fb_default_monspecs = {
120	.manufacturer		= "FOR",
121	.monitor		= "KWH043GM08",
122	.modedb			= lcd_fb_modes,
123	.modedb_len		= ARRAY_SIZE(lcd_fb_modes),
124	.hfmin			= 14915,
125	.hfmax			= 17638,
126	.vfmin			= 53,
127	.vfmax			= 61,
128	.dclkmax		= 9260000,
129};
130
131static struct atmel_lcdfb_pdata __initdata rmt_lcdc_data = {
132	.default_bpp		= 24,
133	.default_dmacon		= ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
134	.default_lcdcon2	= (ATMEL_LCDC_DISTYPE_TFT
135				   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
136				   | ATMEL_LCDC_INVCLK_INVERTED
137				   | ATMEL_LCDC_MEMOR_BIG),
138	.lcd_wiring_mode	= ATMEL_LCDC_WIRING_RGB,
139	.default_monspecs	= &lcd_fb_default_monspecs,
140	.guard_time		= 2,
141};
142#endif
143
144#ifdef CONFIG_BOARD_MRMT_AC97
145static struct ac97c_platform_data __initdata ac97c0_data = {
146	.reset_pin		= PIN_AC97_RST_N,
147};
148#endif
149
150#ifdef CONFIG_BOARD_MRMT_UCB1400_TS
151/* NOTE: IRQ assignment relies on kernel module parameter */
152static struct platform_device rmt_ts_device = {
153	.name	= "ucb1400_ts",
154	.id	= -1,
155};
156#endif
157
158#ifdef CONFIG_BOARD_MRMT_BL_PWM
159/* PWM LEDs: LCD Backlight, etc */
160static struct pwm_lookup pwm_lookup[] = {
161	PWM_LOOKUP("at91sam9rl-pwm", PWM_CH_BL, "leds_pwm", "ds1",
162		   5000, PWM_POLARITY_INVERSED),
163};
164
165static struct led_pwm pwm_leds[] = {
166	{
167		.name = "backlight",
168		.max_brightness = 255,
169	},
170};
171
172static struct led_pwm_platform_data pwm_data = {
173	.num_leds       = ARRAY_SIZE(pwm_leds),
174	.leds           = pwm_leds,
175};
176
177static struct platform_device leds_pwm = {
178	.name   = "leds_pwm",
179	.id     = -1,
180	.dev    = {
181		.platform_data = &pwm_data,
182	},
183};
184#endif
185
186#ifdef CONFIG_BOARD_MRMT_ADS7846_TS
187static int ads7846_pendown_state(void)
188{
189	return !gpio_get_value( PIN_TS_EXTINT );	/* PENIRQ.*/
190}
191
192static struct ads7846_platform_data ads_info = {
193	.model				= 7846,
194	.keep_vref_on			= 0,	/* Use external VREF pin */
195	.vref_delay_usecs		= 0,
196	.vref_mv			= 3300,	/* VREF = 3.3V */
197	.settle_delay_usecs		= 800,
198	.penirq_recheck_delay_usecs	= 800,
199	.x_plate_ohms			= 750,
200	.y_plate_ohms			= 300,
201	.pressure_max			= 4096,
202	.debounce_max			= 1,
203	.debounce_rep			= 0,
204	.debounce_tol			= (~0),
205	.get_pendown_state		= ads7846_pendown_state,
206	.filter				= NULL,
207	.filter_init			= NULL,
208};
209
210static struct spi_board_info spi01_board_info[] __initdata = {
211	{
212		.modalias	= "ads7846",
213		.max_speed_hz	= 31250*26,
214		.bus_num	= 0,
215		.chip_select	= 1,
216		.platform_data	= &ads_info,
217		.irq		= AT32_EXTINT(TS_IRQ),
218	},
219};
220#endif
221
222/* GPIO Keys: left, right, power, etc */
223static const struct gpio_keys_button rmt_gpio_keys_buttons[] = {
224	[0] = {
225		.type		= EV_KEY,
226		.code		= KEY_POWER,
227		.gpio		= PIN_PWR_SW_N,
228		.active_low	= 1,
229		.desc		= "power button",
230	},
231	[1] = {
232		.type		= EV_KEY,
233		.code		= KEY_LEFT,
234		.gpio		= PIN_PB_LEFT,
235		.active_low	= 1,
236		.desc		= "left button",
237	},
238	[2] = {
239		.type		= EV_KEY,
240		.code		= KEY_RIGHT,
241		.gpio		= PIN_PB_RIGHT,
242		.active_low	= 1,
243		.desc		= "right button",
244	},
245};
246
247static const struct gpio_keys_platform_data rmt_gpio_keys_data = {
248	.nbuttons =	ARRAY_SIZE(rmt_gpio_keys_buttons),
249	.buttons =	(void *) rmt_gpio_keys_buttons,
250};
251
252static struct platform_device rmt_gpio_keys = {
253	.name =		"gpio-keys",
254	.id =		-1,
255	.dev = {
256		.platform_data = (void *) &rmt_gpio_keys_data,
257	}
258};
259
260#ifdef CONFIG_BOARD_MRMT_RTC_I2C
261static struct i2c_board_info __initdata mrmt1_i2c_rtc = {
262	I2C_BOARD_INFO("s35390a", 0x30),
263	.irq		= 0,
264};
265#endif
266
267static void mrmt_power_off(void)
268{
269	/* PWR_ON=0 will force power off */
270	gpio_set_value( PIN_PWR_ON, 0 );
271}
272
273static int __init mrmt1_init(void)
274{
275	gpio_set_value( PIN_PWR_ON, 1 );	/* Ensure PWR_ON is enabled */
276
277	pm_power_off = mrmt_power_off;
278
279	/* Setup USARTS (other than console) */
280	at32_map_usart(2, 1, 0);	/* USART 2: /dev/ttyS1, RMT1:DB9M */
281	at32_map_usart(3, 2, ATMEL_USART_RTS | ATMEL_USART_CTS);
282			/* USART 3: /dev/ttyS2, RMT1:Wireless, w/ RTS/CTS */
283	at32_add_device_usart(1);
284	at32_add_device_usart(2);
285
286	/* Select GPIO Key pins */
287	at32_select_gpio( PIN_PWR_SW_N, AT32_GPIOF_DEGLITCH);
288	at32_select_gpio( PIN_PB_LEFT, AT32_GPIOF_DEGLITCH);
289	at32_select_gpio( PIN_PB_RIGHT, AT32_GPIOF_DEGLITCH);
290	platform_device_register(&rmt_gpio_keys);
291
292#ifdef CONFIG_BOARD_MRMT_RTC_I2C
293	i2c_register_board_info(0, &mrmt1_i2c_rtc, 1);
294#endif
295
296#ifndef CONFIG_BOARD_MRMT_LCD_DISABLE
297	/* User "alternate" LCDC inferface on Port E & D */
298	/* NB: exclude LCDC_CC pin, as NGW100 reserves it for other use */
299	at32_add_device_lcdc(0, &rmt_lcdc_data,
300		fbmem_start, fbmem_size,
301		(ATMEL_LCDC_ALT_24BIT | ATMEL_LCDC_PE_DVAL ) );
302#endif
303
304#ifdef CONFIG_BOARD_MRMT_AC97
305	at32_add_device_ac97c(0, &ac97c0_data, AC97C_BOTH);
306#endif
307
308#ifdef CONFIG_BOARD_MRMT_ADS7846_TS
309	/* Select the Touchscreen interrupt pin mode */
310	at32_select_periph( GPIO_PIOB_BASE, 1 << (PB_EXTINT_BASE+TS_IRQ),
311			GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
312	irq_set_irq_type(AT32_EXTINT(TS_IRQ), IRQ_TYPE_EDGE_FALLING);
313	at32_spi_setup_slaves(0,spi01_board_info,ARRAY_SIZE(spi01_board_info));
314	spi_register_board_info(spi01_board_info,ARRAY_SIZE(spi01_board_info));
315#endif
316
317#ifdef CONFIG_BOARD_MRMT_UCB1400_TS
318	/* Select the Touchscreen interrupt pin mode */
319	at32_select_periph( GPIO_PIOB_BASE, 1 << (PB_EXTINT_BASE+TS_IRQ),
320			GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
321	platform_device_register(&rmt_ts_device);
322#endif
323
324	at32_select_gpio( PIN_LCD_DISP, AT32_GPIOF_OUTPUT );
325	gpio_request( PIN_LCD_DISP, "LCD_DISP" );
326	gpio_direction_output( PIN_LCD_DISP, 0 );	/* LCD DISP */
327#ifdef CONFIG_BOARD_MRMT_LCD_DISABLE
328	/* Keep Backlight and DISP off */
329	at32_select_gpio( PIN_LCD_BL, AT32_GPIOF_OUTPUT );
330	gpio_request( PIN_LCD_BL, "LCD_BL" );
331	gpio_direction_output( PIN_LCD_BL, 0 );		/* Backlight */
332#else
333	gpio_set_value( PIN_LCD_DISP, 1 );	/* DISP asserted first */
334#ifdef CONFIG_BOARD_MRMT_BL_PWM
335	/* Use PWM for Backlight controls */
336	at32_add_device_pwm(1 << PWM_CH_BL);
337	pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));
338	platform_device_register(&leds_pwm);
339#else
340	/* Backlight always on */
341	udelay( 1 );
342	at32_select_gpio( PIN_LCD_BL, AT32_GPIOF_OUTPUT );
343	gpio_request( PIN_LCD_BL, "LCD_BL" );
344	gpio_direction_output( PIN_LCD_BL, 1 );
345#endif
346#endif
347
348	/* Make sure BT and Zigbee modules in reset */
349	at32_select_gpio( PIN_BT_RST, AT32_GPIOF_OUTPUT );
350	gpio_request( PIN_BT_RST, "BT_RST" );
351	gpio_direction_output( PIN_BT_RST, 1 );
352	/* BT Module in Reset */
353
354	at32_select_gpio( PIN_ZB_RST_N, AT32_GPIOF_OUTPUT );
355	gpio_request( PIN_ZB_RST_N, "ZB_RST_N" );
356	gpio_direction_output( PIN_ZB_RST_N, 0 );
357	/* XBee Module in Reset */
358
359#ifdef CONFIG_BOARD_MRMT_WIRELESS_ZB
360	udelay( 1000 );
361	/* Unreset the XBee Module */
362	gpio_set_value( PIN_ZB_RST_N, 1 );
363#endif
364#ifdef CONFIG_BOARD_MRMT_WIRELESS_BT
365	udelay( 1000 );
366	/* Unreset the BT Module */
367	gpio_set_value( PIN_BT_RST, 0 );
368#endif
369
370	return 0;
371}
372arch_initcall(mrmt1_init);
373
374static int __init mrmt1_early_init(void)
375{
376	/* To maintain power-on signal in case boot loader did not already */
377	at32_select_gpio( PIN_PWR_ON, AT32_GPIOF_OUTPUT );
378	gpio_request( PIN_PWR_ON, "PIN_PWR_ON" );
379	gpio_direction_output( PIN_PWR_ON, 1 );
380
381	return 0;
382}
383core_initcall(mrmt1_early_init);
384