1 /*
2  * linux/arch/arm/mach-omap1/board-nokia770.c
3  *
4  * Modified from board-generic.c
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10 
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/platform_device.h>
14 #include <linux/input.h>
15 #include <linux/clk.h>
16 
17 #include <linux/spi/spi.h>
18 #include <linux/spi/ads7846.h>
19 #include <linux/workqueue.h>
20 #include <linux/delay.h>
21 
22 #include <asm/hardware.h>
23 #include <asm/mach-types.h>
24 #include <asm/mach/arch.h>
25 #include <asm/mach/map.h>
26 
27 #include <asm/arch/gpio.h>
28 #include <asm/arch/mux.h>
29 #include <asm/arch/usb.h>
30 #include <asm/arch/board.h>
31 #include <asm/arch/keypad.h>
32 #include <asm/arch/common.h>
33 #include <asm/arch/dsp_common.h>
34 #include <asm/arch/aic23.h>
35 #include <asm/arch/gpio.h>
36 
37 static void __init omap_nokia770_init_irq(void)
38 {
39 	/* On Nokia 770, the SleepX signal is masked with an
40 	 * MPUIO line by default.  It has to be unmasked for it
41 	 * to become functional */
42 
43 	/* SleepX mask direction */
44 	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
45 	/* Unmask SleepX signal */
46 	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
47 
48 	omap1_init_common_hw();
49 	omap_init_irq();
50 }
51 
52 static int nokia770_keymap[] = {
53 	KEY(0, 1, GROUP_0 | KEY_UP),
54 	KEY(0, 2, GROUP_1 | KEY_F5),
55 	KEY(1, 0, GROUP_0 | KEY_LEFT),
56 	KEY(1, 1, GROUP_0 | KEY_ENTER),
57 	KEY(1, 2, GROUP_0 | KEY_RIGHT),
58 	KEY(2, 0, GROUP_1 | KEY_ESC),
59 	KEY(2, 1, GROUP_0 | KEY_DOWN),
60 	KEY(2, 2, GROUP_1 | KEY_F4),
61 	KEY(3, 0, GROUP_2 | KEY_F7),
62 	KEY(3, 1, GROUP_2 | KEY_F8),
63 	KEY(3, 2, GROUP_2 | KEY_F6),
64 	0
65 };
66 
67 static struct resource nokia770_kp_resources[] = {
68 	[0] = {
69 		.start	= INT_KEYBOARD,
70 		.end	= INT_KEYBOARD,
71 		.flags	= IORESOURCE_IRQ,
72 	},
73 };
74 
75 static struct omap_kp_platform_data nokia770_kp_data = {
76 	.rows		= 8,
77 	.cols		= 8,
78 	.keymap		= nokia770_keymap,
79 	.keymapsize	= ARRAY_SIZE(nokia770_keymap),
80 	.delay		= 4,
81 };
82 
83 static struct platform_device nokia770_kp_device = {
84 	.name		= "omap-keypad",
85 	.id		= -1,
86 	.dev		= {
87 		.platform_data = &nokia770_kp_data,
88 	},
89 	.num_resources	= ARRAY_SIZE(nokia770_kp_resources),
90 	.resource	= nokia770_kp_resources,
91 };
92 
93 static struct platform_device *nokia770_devices[] __initdata = {
94         &nokia770_kp_device,
95 };
96 
97 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
98 	.x_max		= 0x0fff,
99 	.y_max		= 0x0fff,
100 	.x_plate_ohms	= 180,
101 	.pressure_max	= 255,
102 	.debounce_max	= 10,
103 	.debounce_tol	= 3,
104 };
105 
106 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
107 	[0] = {
108 		.modalias		= "lcd_mipid",
109 		.bus_num        = 2,
110 		.chip_select    = 3,
111 		.max_speed_hz   = 12000000,
112 	},
113 	[1] = {
114 		.modalias       = "ads7846",
115 		.bus_num        = 2,
116 		.chip_select    = 0,
117 		.max_speed_hz   = 2500000,
118 		.irq		= OMAP_GPIO_IRQ(15),
119 		.platform_data	= &nokia770_ads7846_platform_data,
120 	},
121 };
122 
123 
124 /* assume no Mini-AB port */
125 
126 static struct omap_usb_config nokia770_usb_config __initdata = {
127 	.otg		= 1,
128 	.register_host	= 1,
129 	.register_dev	= 1,
130 	.hmc_mode	= 16,
131 	.pins[0]	= 6,
132 };
133 
134 static struct omap_mmc_config nokia770_mmc_config __initdata = {
135 	.mmc[0] = {
136 		.enabled	= 0,
137 		.wire4		= 0,
138 		.wp_pin		= -1,
139 		.power_pin	= -1,
140 		.switch_pin	= -1,
141 	},
142 	.mmc[1] = {
143 		.enabled	= 0,
144 		.wire4		= 0,
145 		.wp_pin		= -1,
146 		.power_pin	= -1,
147 		.switch_pin	= -1,
148 	},
149 };
150 
151 static struct omap_board_config_kernel nokia770_config[] = {
152 	{ OMAP_TAG_USB,		NULL },
153 	{ OMAP_TAG_MMC,		&nokia770_mmc_config },
154 };
155 
156 /*
157  * audio power control
158  */
159 #define	HEADPHONE_GPIO		14
160 #define	AMPLIFIER_CTRL_GPIO	58
161 
162 static struct clk *dspxor_ck;
163 static DECLARE_MUTEX(audio_pwr_sem);
164 /*
165  * audio_pwr_state
166  * +--+-------------------------+---------------------------------------+
167  * |-1|down			|power-up request -> 0			|
168  * +--+-------------------------+---------------------------------------+
169  * | 0|up			|power-down(1) request -> 1		|
170  * |  |				|power-down(2) request -> (ignore)	|
171  * +--+-------------------------+---------------------------------------+
172  * | 1|up,			|power-up request -> 0			|
173  * |  |received down(1) request	|power-down(2) request -> -1		|
174  * +--+-------------------------+---------------------------------------+
175  */
176 static int audio_pwr_state = -1;
177 
178 /*
179  * audio_pwr_up / down should be called under audio_pwr_sem
180  */
181 static void nokia770_audio_pwr_up(void)
182 {
183 	clk_enable(dspxor_ck);
184 
185 	/* Turn on codec */
186 	tlv320aic23_power_up();
187 
188 	if (omap_get_gpio_datain(HEADPHONE_GPIO))
189 		/* HP not connected, turn on amplifier */
190 		omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
191 	else
192 		/* HP connected, do not turn on amplifier */
193 		printk("HP connected\n");
194 }
195 
196 static void codec_delayed_power_down(struct work_struct *work)
197 {
198 	down(&audio_pwr_sem);
199 	if (audio_pwr_state == -1)
200 		tlv320aic23_power_down();
201 	clk_disable(dspxor_ck);
202 	up(&audio_pwr_sem);
203 }
204 
205 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
206 
207 static void nokia770_audio_pwr_down(void)
208 {
209 	/* Turn off amplifier */
210 	omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
211 
212 	/* Turn off codec: schedule delayed work */
213 	schedule_delayed_work(&codec_power_down_work, HZ / 20);	/* 50ms */
214 }
215 
216 void nokia770_audio_pwr_up_request(int stage)
217 {
218 	down(&audio_pwr_sem);
219 	if (audio_pwr_state == -1)
220 		nokia770_audio_pwr_up();
221 	/* force audio_pwr_state = 0, even if it was 1. */
222 	audio_pwr_state = 0;
223 	up(&audio_pwr_sem);
224 }
225 
226 void nokia770_audio_pwr_down_request(int stage)
227 {
228 	down(&audio_pwr_sem);
229 	switch (stage) {
230 	case 1:
231 		if (audio_pwr_state == 0)
232 			audio_pwr_state = 1;
233 		break;
234 	case 2:
235 		if (audio_pwr_state == 1) {
236 			nokia770_audio_pwr_down();
237 			audio_pwr_state = -1;
238 		}
239 		break;
240 	}
241 	up(&audio_pwr_sem);
242 }
243 
244 static void __init omap_nokia770_init(void)
245 {
246 	nokia770_config[0].data = &nokia770_usb_config;
247 
248 	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
249 	spi_register_board_info(nokia770_spi_board_info,
250 				ARRAY_SIZE(nokia770_spi_board_info));
251 	omap_board_config = nokia770_config;
252 	omap_board_config_size = ARRAY_SIZE(nokia770_config);
253 	omap_serial_init();
254 	omap_dsp_audio_pwr_up_request = nokia770_audio_pwr_up_request;
255 	omap_dsp_audio_pwr_down_request = nokia770_audio_pwr_down_request;
256 	dspxor_ck = clk_get(0, "dspxor_ck");
257 }
258 
259 static void __init omap_nokia770_map_io(void)
260 {
261 	omap1_map_common_io();
262 }
263 
264 MACHINE_START(NOKIA770, "Nokia 770")
265 	.phys_io	= 0xfff00000,
266 	.io_pg_offst	= ((0xfef00000) >> 18) & 0xfffc,
267 	.boot_params	= 0x10000100,
268 	.map_io		= omap_nokia770_map_io,
269 	.init_irq	= omap_nokia770_init_irq,
270 	.init_machine	= omap_nokia770_init,
271 	.timer		= &omap_timer,
272 MACHINE_END
273