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/mutex.h>
14 #include <linux/platform_device.h>
15 #include <linux/input.h>
16 #include <linux/clk.h>
17 
18 #include <linux/spi/spi.h>
19 #include <linux/spi/ads7846.h>
20 #include <linux/workqueue.h>
21 #include <linux/delay.h>
22 
23 #include <asm/hardware.h>
24 #include <asm/mach-types.h>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/map.h>
27 
28 #include <asm/arch/gpio.h>
29 #include <asm/arch/mux.h>
30 #include <asm/arch/usb.h>
31 #include <asm/arch/board.h>
32 #include <asm/arch/keypad.h>
33 #include <asm/arch/common.h>
34 #include <asm/arch/dsp_common.h>
35 #include <asm/arch/aic23.h>
36 #include <asm/arch/omapfb.h>
37 #include <asm/arch/lcd_mipid.h>
38 
39 #define ADS7846_PENDOWN_GPIO	15
40 
41 static void __init omap_nokia770_init_irq(void)
42 {
43 	/* On Nokia 770, the SleepX signal is masked with an
44 	 * MPUIO line by default.  It has to be unmasked for it
45 	 * to become functional */
46 
47 	/* SleepX mask direction */
48 	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
49 	/* Unmask SleepX signal */
50 	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
51 
52 	omap1_init_common_hw();
53 	omap_init_irq();
54 }
55 
56 static int nokia770_keymap[] = {
57 	KEY(0, 1, GROUP_0 | KEY_UP),
58 	KEY(0, 2, GROUP_1 | KEY_F5),
59 	KEY(1, 0, GROUP_0 | KEY_LEFT),
60 	KEY(1, 1, GROUP_0 | KEY_ENTER),
61 	KEY(1, 2, GROUP_0 | KEY_RIGHT),
62 	KEY(2, 0, GROUP_1 | KEY_ESC),
63 	KEY(2, 1, GROUP_0 | KEY_DOWN),
64 	KEY(2, 2, GROUP_1 | KEY_F4),
65 	KEY(3, 0, GROUP_2 | KEY_F7),
66 	KEY(3, 1, GROUP_2 | KEY_F8),
67 	KEY(3, 2, GROUP_2 | KEY_F6),
68 	0
69 };
70 
71 static struct resource nokia770_kp_resources[] = {
72 	[0] = {
73 		.start	= INT_KEYBOARD,
74 		.end	= INT_KEYBOARD,
75 		.flags	= IORESOURCE_IRQ,
76 	},
77 };
78 
79 static struct omap_kp_platform_data nokia770_kp_data = {
80 	.rows		= 8,
81 	.cols		= 8,
82 	.keymap		= nokia770_keymap,
83 	.keymapsize	= ARRAY_SIZE(nokia770_keymap),
84 	.delay		= 4,
85 };
86 
87 static struct platform_device nokia770_kp_device = {
88 	.name		= "omap-keypad",
89 	.id		= -1,
90 	.dev		= {
91 		.platform_data = &nokia770_kp_data,
92 	},
93 	.num_resources	= ARRAY_SIZE(nokia770_kp_resources),
94 	.resource	= nokia770_kp_resources,
95 };
96 
97 static struct platform_device *nokia770_devices[] __initdata = {
98 	&nokia770_kp_device,
99 };
100 
101 static void mipid_shutdown(struct mipid_platform_data *pdata)
102 {
103 	if (pdata->nreset_gpio != -1) {
104 		printk(KERN_INFO "shutdown LCD\n");
105 		omap_set_gpio_dataout(pdata->nreset_gpio, 0);
106 		msleep(120);
107 	}
108 }
109 
110 static struct mipid_platform_data nokia770_mipid_platform_data = {
111 	.shutdown = mipid_shutdown,
112 };
113 
114 static void mipid_dev_init(void)
115 {
116 	const struct omap_lcd_config *conf;
117 
118 	conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
119 	if (conf != NULL) {
120 		nokia770_mipid_platform_data.nreset_gpio = conf->nreset_gpio;
121 		nokia770_mipid_platform_data.data_lines = conf->data_lines;
122 	}
123 }
124 
125 static void ads7846_dev_init(void)
126 {
127 	if (omap_request_gpio(ADS7846_PENDOWN_GPIO) < 0)
128 		printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
129 }
130 
131 static int ads7846_get_pendown_state(void)
132 {
133 	return !omap_get_gpio_datain(ADS7846_PENDOWN_GPIO);
134 }
135 
136 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
137 	.x_max		= 0x0fff,
138 	.y_max		= 0x0fff,
139 	.x_plate_ohms	= 180,
140 	.pressure_max	= 255,
141 	.debounce_max	= 10,
142 	.debounce_tol	= 3,
143 	.debounce_rep	= 1,
144 	.get_pendown_state	= ads7846_get_pendown_state,
145 };
146 
147 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
148 	[0] = {
149 		.modalias       = "lcd_mipid",
150 		.bus_num        = 2,
151 		.chip_select    = 3,
152 		.max_speed_hz   = 12000000,
153 		.platform_data	= &nokia770_mipid_platform_data,
154 	},
155 	[1] = {
156 		.modalias       = "ads7846",
157 		.bus_num        = 2,
158 		.chip_select    = 0,
159 		.max_speed_hz   = 2500000,
160 		.irq		= OMAP_GPIO_IRQ(15),
161 		.platform_data	= &nokia770_ads7846_platform_data,
162 	},
163 };
164 
165 
166 /* assume no Mini-AB port */
167 
168 static struct omap_usb_config nokia770_usb_config __initdata = {
169 	.otg		= 1,
170 	.register_host	= 1,
171 	.register_dev	= 1,
172 	.hmc_mode	= 16,
173 	.pins[0]	= 6,
174 };
175 
176 static struct omap_mmc_config nokia770_mmc_config __initdata = {
177 	.mmc[0] = {
178 		.enabled	= 0,
179 		.wire4		= 0,
180 		.wp_pin		= -1,
181 		.power_pin	= -1,
182 		.switch_pin	= -1,
183 	},
184 	.mmc[1] = {
185 		.enabled	= 0,
186 		.wire4		= 0,
187 		.wp_pin		= -1,
188 		.power_pin	= -1,
189 		.switch_pin	= -1,
190 	},
191 };
192 
193 static struct omap_board_config_kernel nokia770_config[] __initdata = {
194 	{ OMAP_TAG_USB,		NULL },
195 	{ OMAP_TAG_MMC,		&nokia770_mmc_config },
196 };
197 
198 #if	defined(CONFIG_OMAP_DSP)
199 /*
200  * audio power control
201  */
202 #define	HEADPHONE_GPIO		14
203 #define	AMPLIFIER_CTRL_GPIO	58
204 
205 static struct clk *dspxor_ck;
206 static DEFINE_MUTEX(audio_pwr_lock);
207 /*
208  * audio_pwr_state
209  * +--+-------------------------+---------------------------------------+
210  * |-1|down			|power-up request -> 0			|
211  * +--+-------------------------+---------------------------------------+
212  * | 0|up			|power-down(1) request -> 1		|
213  * |  |				|power-down(2) request -> (ignore)	|
214  * +--+-------------------------+---------------------------------------+
215  * | 1|up,			|power-up request -> 0			|
216  * |  |received down(1) request	|power-down(2) request -> -1		|
217  * +--+-------------------------+---------------------------------------+
218  */
219 static int audio_pwr_state = -1;
220 
221 /*
222  * audio_pwr_up / down should be called under audio_pwr_lock
223  */
224 static void nokia770_audio_pwr_up(void)
225 {
226 	clk_enable(dspxor_ck);
227 
228 	/* Turn on codec */
229 	aic23_power_up();
230 
231 	if (omap_get_gpio_datain(HEADPHONE_GPIO))
232 		/* HP not connected, turn on amplifier */
233 		omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
234 	else
235 		/* HP connected, do not turn on amplifier */
236 		printk("HP connected\n");
237 }
238 
239 static void codec_delayed_power_down(struct work_struct *work)
240 {
241 	mutex_lock(&audio_pwr_lock);
242 	if (audio_pwr_state == -1)
243 		aic23_power_down();
244 	clk_disable(dspxor_ck);
245 	mutex_unlock(&audio_pwr_lock);
246 }
247 
248 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
249 
250 static void nokia770_audio_pwr_down(void)
251 {
252 	/* Turn off amplifier */
253 	omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
254 
255 	/* Turn off codec: schedule delayed work */
256 	schedule_delayed_work(&codec_power_down_work, HZ / 20);	/* 50ms */
257 }
258 
259 static int
260 nokia770_audio_pwr_up_request(struct dsp_kfunc_device *kdev, int stage)
261 {
262 	mutex_lock(&audio_pwr_lock);
263 	if (audio_pwr_state == -1)
264 		nokia770_audio_pwr_up();
265 	/* force audio_pwr_state = 0, even if it was 1. */
266 	audio_pwr_state = 0;
267 	mutex_unlock(&audio_pwr_lock);
268 	return 0;
269 }
270 
271 static int
272 nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
273 {
274 	mutex_lock(&audio_pwr_lock);
275 	switch (stage) {
276 	case 1:
277 		if (audio_pwr_state == 0)
278 			audio_pwr_state = 1;
279 		break;
280 	case 2:
281 		if (audio_pwr_state == 1) {
282 			nokia770_audio_pwr_down();
283 			audio_pwr_state = -1;
284 		}
285 		break;
286 	}
287 	mutex_unlock(&audio_pwr_lock);
288 	return 0;
289 }
290 
291 static struct dsp_kfunc_device nokia770_audio_device = {
292 	.name	 = "audio",
293 	.type	 = DSP_KFUNC_DEV_TYPE_AUDIO,
294 	.enable  = nokia770_audio_pwr_up_request,
295 	.disable = nokia770_audio_pwr_down_request,
296 };
297 
298 static __init int omap_dsp_init(void)
299 {
300 	int ret;
301 
302 	dspxor_ck = clk_get(0, "dspxor_ck");
303 	if (IS_ERR(dspxor_ck)) {
304 		printk(KERN_ERR "couldn't acquire dspxor_ck\n");
305 		return PTR_ERR(dspxor_ck);
306 	}
307 
308 	ret = dsp_kfunc_device_register(&nokia770_audio_device);
309 	if (ret) {
310 		printk(KERN_ERR
311 		       "KFUNC device registration faild: %s\n",
312 		       nokia770_audio_device.name);
313 		goto out;
314 	}
315 	return 0;
316  out:
317 	return ret;
318 }
319 #else
320 #define omap_dsp_init()		do {} while (0)
321 #endif	/* CONFIG_OMAP_DSP */
322 
323 static void __init omap_nokia770_init(void)
324 {
325 	nokia770_config[0].data = &nokia770_usb_config;
326 
327 	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
328 	spi_register_board_info(nokia770_spi_board_info,
329 				ARRAY_SIZE(nokia770_spi_board_info));
330 	omap_board_config = nokia770_config;
331 	omap_board_config_size = ARRAY_SIZE(nokia770_config);
332 	omap_gpio_init();
333 	omap_serial_init();
334 	omap_register_i2c_bus(1, 100, NULL, 0);
335 	omap_dsp_init();
336 	ads7846_dev_init();
337 	mipid_dev_init();
338 }
339 
340 static void __init omap_nokia770_map_io(void)
341 {
342 	omap1_map_common_io();
343 }
344 
345 MACHINE_START(NOKIA770, "Nokia 770")
346 	.phys_io	= 0xfff00000,
347 	.io_pg_offst	= ((0xfef00000) >> 18) & 0xfffc,
348 	.boot_params	= 0x10000100,
349 	.map_io		= omap_nokia770_map_io,
350 	.init_irq	= omap_nokia770_init_irq,
351 	.init_machine	= omap_nokia770_init,
352 	.timer		= &omap_timer,
353 MACHINE_END
354