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
37static 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
52static 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
67static struct resource nokia770_kp_resources[] = {
68	[0] = {
69		.start	= INT_KEYBOARD,
70		.end	= INT_KEYBOARD,
71		.flags	= IORESOURCE_IRQ,
72	},
73};
74
75static 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
83static 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
93static struct platform_device *nokia770_devices[] __initdata = {
94        &nokia770_kp_device,
95};
96
97static 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
106static 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
126static 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
134static 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
151static 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
162static struct clk *dspxor_ck;
163static 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 */
176static int audio_pwr_state = -1;
177
178/*
179 * audio_pwr_up / down should be called under audio_pwr_sem
180 */
181static 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
196static 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
205static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
206
207static 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
216void 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
226void 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
244static 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
259static void __init omap_nokia770_map_io(void)
260{
261	omap1_map_common_io();
262}
263
264MACHINE_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,
272MACHINE_END
273