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/omapfb.h>
36 #include <asm/arch/lcd_mipid.h>
37 
38 #define ADS7846_PENDOWN_GPIO	15
39 
40 static void __init omap_nokia770_init_irq(void)
41 {
42 	/* On Nokia 770, the SleepX signal is masked with an
43 	 * MPUIO line by default.  It has to be unmasked for it
44 	 * to become functional */
45 
46 	/* SleepX mask direction */
47 	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
48 	/* Unmask SleepX signal */
49 	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
50 
51 	omap1_init_common_hw();
52 	omap_init_irq();
53 }
54 
55 static int nokia770_keymap[] = {
56 	KEY(0, 1, GROUP_0 | KEY_UP),
57 	KEY(0, 2, GROUP_1 | KEY_F5),
58 	KEY(1, 0, GROUP_0 | KEY_LEFT),
59 	KEY(1, 1, GROUP_0 | KEY_ENTER),
60 	KEY(1, 2, GROUP_0 | KEY_RIGHT),
61 	KEY(2, 0, GROUP_1 | KEY_ESC),
62 	KEY(2, 1, GROUP_0 | KEY_DOWN),
63 	KEY(2, 2, GROUP_1 | KEY_F4),
64 	KEY(3, 0, GROUP_2 | KEY_F7),
65 	KEY(3, 1, GROUP_2 | KEY_F8),
66 	KEY(3, 2, GROUP_2 | KEY_F6),
67 	0
68 };
69 
70 static struct resource nokia770_kp_resources[] = {
71 	[0] = {
72 		.start	= INT_KEYBOARD,
73 		.end	= INT_KEYBOARD,
74 		.flags	= IORESOURCE_IRQ,
75 	},
76 };
77 
78 static struct omap_kp_platform_data nokia770_kp_data = {
79 	.rows		= 8,
80 	.cols		= 8,
81 	.keymap		= nokia770_keymap,
82 	.keymapsize	= ARRAY_SIZE(nokia770_keymap),
83 	.delay		= 4,
84 };
85 
86 static struct platform_device nokia770_kp_device = {
87 	.name		= "omap-keypad",
88 	.id		= -1,
89 	.dev		= {
90 		.platform_data = &nokia770_kp_data,
91 	},
92 	.num_resources	= ARRAY_SIZE(nokia770_kp_resources),
93 	.resource	= nokia770_kp_resources,
94 };
95 
96 static struct platform_device *nokia770_devices[] __initdata = {
97 	&nokia770_kp_device,
98 };
99 
100 static void mipid_shutdown(struct mipid_platform_data *pdata)
101 {
102 	if (pdata->nreset_gpio != -1) {
103 		printk(KERN_INFO "shutdown LCD\n");
104 		omap_set_gpio_dataout(pdata->nreset_gpio, 0);
105 		msleep(120);
106 	}
107 }
108 
109 static struct mipid_platform_data nokia770_mipid_platform_data = {
110 	.shutdown = mipid_shutdown,
111 };
112 
113 static void mipid_dev_init(void)
114 {
115 	const struct omap_lcd_config *conf;
116 
117 	conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
118 	if (conf != NULL) {
119 		nokia770_mipid_platform_data.nreset_gpio = conf->nreset_gpio;
120 		nokia770_mipid_platform_data.data_lines = conf->data_lines;
121 	}
122 }
123 
124 static void ads7846_dev_init(void)
125 {
126 	if (omap_request_gpio(ADS7846_PENDOWN_GPIO) < 0)
127 		printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
128 }
129 
130 static int ads7846_get_pendown_state(void)
131 {
132 	return !omap_get_gpio_datain(ADS7846_PENDOWN_GPIO);
133 }
134 
135 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
136 	.x_max		= 0x0fff,
137 	.y_max		= 0x0fff,
138 	.x_plate_ohms	= 180,
139 	.pressure_max	= 255,
140 	.debounce_max	= 10,
141 	.debounce_tol	= 3,
142 	.debounce_rep	= 1,
143 	.get_pendown_state	= ads7846_get_pendown_state,
144 };
145 
146 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
147 	[0] = {
148 		.modalias       = "lcd_mipid",
149 		.bus_num        = 2,
150 		.chip_select    = 3,
151 		.max_speed_hz   = 12000000,
152 		.platform_data	= &nokia770_mipid_platform_data,
153 	},
154 	[1] = {
155 		.modalias       = "ads7846",
156 		.bus_num        = 2,
157 		.chip_select    = 0,
158 		.max_speed_hz   = 2500000,
159 		.irq		= OMAP_GPIO_IRQ(15),
160 		.platform_data	= &nokia770_ads7846_platform_data,
161 	},
162 };
163 
164 
165 /* assume no Mini-AB port */
166 
167 static struct omap_usb_config nokia770_usb_config __initdata = {
168 	.otg		= 1,
169 	.register_host	= 1,
170 	.register_dev	= 1,
171 	.hmc_mode	= 16,
172 	.pins[0]	= 6,
173 };
174 
175 static struct omap_mmc_config nokia770_mmc_config __initdata = {
176 	.mmc[0] = {
177 		.enabled	= 0,
178 		.wire4		= 0,
179 		.wp_pin		= -1,
180 		.power_pin	= -1,
181 		.switch_pin	= -1,
182 	},
183 	.mmc[1] = {
184 		.enabled	= 0,
185 		.wire4		= 0,
186 		.wp_pin		= -1,
187 		.power_pin	= -1,
188 		.switch_pin	= -1,
189 	},
190 };
191 
192 static struct omap_board_config_kernel nokia770_config[] __initdata = {
193 	{ OMAP_TAG_USB,		NULL },
194 	{ OMAP_TAG_MMC,		&nokia770_mmc_config },
195 };
196 
197 #if	defined(CONFIG_OMAP_DSP)
198 /*
199  * audio power control
200  */
201 #define	HEADPHONE_GPIO		14
202 #define	AMPLIFIER_CTRL_GPIO	58
203 
204 static struct clk *dspxor_ck;
205 static DECLARE_MUTEX(audio_pwr_sem);
206 /*
207  * audio_pwr_state
208  * +--+-------------------------+---------------------------------------+
209  * |-1|down			|power-up request -> 0			|
210  * +--+-------------------------+---------------------------------------+
211  * | 0|up			|power-down(1) request -> 1		|
212  * |  |				|power-down(2) request -> (ignore)	|
213  * +--+-------------------------+---------------------------------------+
214  * | 1|up,			|power-up request -> 0			|
215  * |  |received down(1) request	|power-down(2) request -> -1		|
216  * +--+-------------------------+---------------------------------------+
217  */
218 static int audio_pwr_state = -1;
219 
220 /*
221  * audio_pwr_up / down should be called under audio_pwr_sem
222  */
223 static void nokia770_audio_pwr_up(void)
224 {
225 	clk_enable(dspxor_ck);
226 
227 	/* Turn on codec */
228 	aic23_power_up();
229 
230 	if (omap_get_gpio_datain(HEADPHONE_GPIO))
231 		/* HP not connected, turn on amplifier */
232 		omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
233 	else
234 		/* HP connected, do not turn on amplifier */
235 		printk("HP connected\n");
236 }
237 
238 static void codec_delayed_power_down(struct work_struct *work)
239 {
240 	down(&audio_pwr_sem);
241 	if (audio_pwr_state == -1)
242 		aic23_power_down();
243 	clk_disable(dspxor_ck);
244 	up(&audio_pwr_sem);
245 }
246 
247 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
248 
249 static void nokia770_audio_pwr_down(void)
250 {
251 	/* Turn off amplifier */
252 	omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
253 
254 	/* Turn off codec: schedule delayed work */
255 	schedule_delayed_work(&codec_power_down_work, HZ / 20);	/* 50ms */
256 }
257 
258 static int
259 nokia770_audio_pwr_up_request(struct dsp_kfunc_device *kdev, int stage)
260 {
261 	down(&audio_pwr_sem);
262 	if (audio_pwr_state == -1)
263 		nokia770_audio_pwr_up();
264 	/* force audio_pwr_state = 0, even if it was 1. */
265 	audio_pwr_state = 0;
266 	up(&audio_pwr_sem);
267 	return 0;
268 }
269 
270 static int
271 nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
272 {
273 	down(&audio_pwr_sem);
274 	switch (stage) {
275 	case 1:
276 		if (audio_pwr_state == 0)
277 			audio_pwr_state = 1;
278 		break;
279 	case 2:
280 		if (audio_pwr_state == 1) {
281 			nokia770_audio_pwr_down();
282 			audio_pwr_state = -1;
283 		}
284 		break;
285 	}
286 	up(&audio_pwr_sem);
287 	return 0;
288 }
289 
290 static struct dsp_kfunc_device nokia770_audio_device = {
291 	.name	 = "audio",
292 	.type	 = DSP_KFUNC_DEV_TYPE_AUDIO,
293 	.enable  = nokia770_audio_pwr_up_request,
294 	.disable = nokia770_audio_pwr_down_request,
295 };
296 
297 static __init int omap_dsp_init(void)
298 {
299 	int ret;
300 
301 	dspxor_ck = clk_get(0, "dspxor_ck");
302 	if (IS_ERR(dspxor_ck)) {
303 		printk(KERN_ERR "couldn't acquire dspxor_ck\n");
304 		return PTR_ERR(dspxor_ck);
305 	}
306 
307 	ret = dsp_kfunc_device_register(&nokia770_audio_device);
308 	if (ret) {
309 		printk(KERN_ERR
310 		       "KFUNC device registration faild: %s\n",
311 		       nokia770_audio_device.name);
312 		goto out;
313 	}
314 	return 0;
315  out:
316 	return ret;
317 }
318 #else
319 #define omap_dsp_init()		do {} while (0)
320 #endif	/* CONFIG_OMAP_DSP */
321 
322 static void __init omap_nokia770_init(void)
323 {
324 	nokia770_config[0].data = &nokia770_usb_config;
325 
326 	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
327 	spi_register_board_info(nokia770_spi_board_info,
328 				ARRAY_SIZE(nokia770_spi_board_info));
329 	omap_board_config = nokia770_config;
330 	omap_board_config_size = ARRAY_SIZE(nokia770_config);
331 	omap_gpio_init();
332 	omap_serial_init();
333 	omap_register_i2c_bus(1, 100, NULL, 0);
334 	omap_dsp_init();
335 	ads7846_dev_init();
336 	mipid_dev_init();
337 }
338 
339 static void __init omap_nokia770_map_io(void)
340 {
341 	omap1_map_common_io();
342 }
343 
344 MACHINE_START(NOKIA770, "Nokia 770")
345 	.phys_io	= 0xfff00000,
346 	.io_pg_offst	= ((0xfef00000) >> 18) & 0xfffc,
347 	.boot_params	= 0x10000100,
348 	.map_io		= omap_nokia770_map_io,
349 	.init_irq	= omap_nokia770_init_irq,
350 	.init_machine	= omap_nokia770_init,
351 	.timer		= &omap_timer,
352 MACHINE_END
353