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 <mach/hardware.h>
24 #include <asm/mach-types.h>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/map.h>
27 
28 #include <mach/gpio.h>
29 #include <mach/mux.h>
30 #include <mach/usb.h>
31 #include <mach/board.h>
32 #include <mach/keypad.h>
33 #include <mach/common.h>
34 #include <mach/dsp_common.h>
35 #include <mach/omapfb.h>
36 #include <mach/lcd_mipid.h>
37 #include <mach/mmc.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 		gpio_set_value(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 (gpio_request(ADS7846_PENDOWN_GPIO, "ADS7846 pendown") < 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 !gpio_get_value(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 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
177 
178 #define NOKIA770_GPIO_MMC_POWER		41
179 #define NOKIA770_GPIO_MMC_SWITCH	23
180 
181 static int nokia770_mmc_set_power(struct device *dev, int slot, int power_on,
182 				int vdd)
183 {
184 	if (power_on)
185 		gpio_set_value(NOKIA770_GPIO_MMC_POWER, 1);
186 	else
187 		gpio_set_value(NOKIA770_GPIO_MMC_POWER, 0);
188 
189 	return 0;
190 }
191 
192 static int nokia770_mmc_get_cover_state(struct device *dev, int slot)
193 {
194 	return gpio_get_value(NOKIA770_GPIO_MMC_SWITCH);
195 }
196 
197 static struct omap_mmc_platform_data nokia770_mmc2_data = {
198 	.nr_slots                       = 1,
199 	.dma_mask			= 0xffffffff,
200 	.slots[0]       = {
201 		.set_power		= nokia770_mmc_set_power,
202 		.get_cover_state	= nokia770_mmc_get_cover_state,
203 		.name                   = "mmcblk",
204 	},
205 };
206 
207 static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];
208 
209 static void __init nokia770_mmc_init(void)
210 {
211 	int ret;
212 
213 	ret = gpio_request(NOKIA770_GPIO_MMC_POWER, "MMC power");
214 	if (ret < 0)
215 		return;
216 	gpio_direction_output(NOKIA770_GPIO_MMC_POWER, 0);
217 
218 	ret = gpio_request(NOKIA770_GPIO_MMC_SWITCH, "MMC cover");
219 	if (ret < 0) {
220 		gpio_free(NOKIA770_GPIO_MMC_POWER);
221 		return;
222 	}
223 	gpio_direction_input(NOKIA770_GPIO_MMC_SWITCH);
224 
225 	/* Only the second MMC controller is used */
226 	nokia770_mmc_data[1] = &nokia770_mmc2_data;
227 	omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
228 }
229 
230 #else
231 static inline void nokia770_mmc_init(void)
232 {
233 }
234 #endif
235 
236 #if	defined(CONFIG_OMAP_DSP)
237 /*
238  * audio power control
239  */
240 #define	HEADPHONE_GPIO		14
241 #define	AMPLIFIER_CTRL_GPIO	58
242 
243 static struct clk *dspxor_ck;
244 static DEFINE_MUTEX(audio_pwr_lock);
245 /*
246  * audio_pwr_state
247  * +--+-------------------------+---------------------------------------+
248  * |-1|down			|power-up request -> 0			|
249  * +--+-------------------------+---------------------------------------+
250  * | 0|up			|power-down(1) request -> 1		|
251  * |  |				|power-down(2) request -> (ignore)	|
252  * +--+-------------------------+---------------------------------------+
253  * | 1|up,			|power-up request -> 0			|
254  * |  |received down(1) request	|power-down(2) request -> -1		|
255  * +--+-------------------------+---------------------------------------+
256  */
257 static int audio_pwr_state = -1;
258 
259 static inline void aic23_power_up(void)
260 {
261 }
262 static inline void aic23_power_down(void)
263 {
264 }
265 
266 /*
267  * audio_pwr_up / down should be called under audio_pwr_lock
268  */
269 static void nokia770_audio_pwr_up(void)
270 {
271 	clk_enable(dspxor_ck);
272 
273 	/* Turn on codec */
274 	aic23_power_up();
275 
276 	if (gpio_get_value(HEADPHONE_GPIO))
277 		/* HP not connected, turn on amplifier */
278 		gpio_set_value(AMPLIFIER_CTRL_GPIO, 1);
279 	else
280 		/* HP connected, do not turn on amplifier */
281 		printk("HP connected\n");
282 }
283 
284 static void codec_delayed_power_down(struct work_struct *work)
285 {
286 	mutex_lock(&audio_pwr_lock);
287 	if (audio_pwr_state == -1)
288 		aic23_power_down();
289 	clk_disable(dspxor_ck);
290 	mutex_unlock(&audio_pwr_lock);
291 }
292 
293 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
294 
295 static void nokia770_audio_pwr_down(void)
296 {
297 	/* Turn off amplifier */
298 	gpio_set_value(AMPLIFIER_CTRL_GPIO, 0);
299 
300 	/* Turn off codec: schedule delayed work */
301 	schedule_delayed_work(&codec_power_down_work, HZ / 20);	/* 50ms */
302 }
303 
304 static int
305 nokia770_audio_pwr_up_request(struct dsp_kfunc_device *kdev, int stage)
306 {
307 	mutex_lock(&audio_pwr_lock);
308 	if (audio_pwr_state == -1)
309 		nokia770_audio_pwr_up();
310 	/* force audio_pwr_state = 0, even if it was 1. */
311 	audio_pwr_state = 0;
312 	mutex_unlock(&audio_pwr_lock);
313 	return 0;
314 }
315 
316 static int
317 nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
318 {
319 	mutex_lock(&audio_pwr_lock);
320 	switch (stage) {
321 	case 1:
322 		if (audio_pwr_state == 0)
323 			audio_pwr_state = 1;
324 		break;
325 	case 2:
326 		if (audio_pwr_state == 1) {
327 			nokia770_audio_pwr_down();
328 			audio_pwr_state = -1;
329 		}
330 		break;
331 	}
332 	mutex_unlock(&audio_pwr_lock);
333 	return 0;
334 }
335 
336 static struct dsp_kfunc_device nokia770_audio_device = {
337 	.name	 = "audio",
338 	.type	 = DSP_KFUNC_DEV_TYPE_AUDIO,
339 	.enable  = nokia770_audio_pwr_up_request,
340 	.disable = nokia770_audio_pwr_down_request,
341 };
342 
343 static __init int omap_dsp_init(void)
344 {
345 	int ret;
346 
347 	dspxor_ck = clk_get(0, "dspxor_ck");
348 	if (IS_ERR(dspxor_ck)) {
349 		printk(KERN_ERR "couldn't acquire dspxor_ck\n");
350 		return PTR_ERR(dspxor_ck);
351 	}
352 
353 	ret = dsp_kfunc_device_register(&nokia770_audio_device);
354 	if (ret) {
355 		printk(KERN_ERR
356 		       "KFUNC device registration faild: %s\n",
357 		       nokia770_audio_device.name);
358 		goto out;
359 	}
360 	return 0;
361  out:
362 	return ret;
363 }
364 #else
365 #define omap_dsp_init()		do {} while (0)
366 #endif	/* CONFIG_OMAP_DSP */
367 
368 static void __init omap_nokia770_init(void)
369 {
370 	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
371 	spi_register_board_info(nokia770_spi_board_info,
372 				ARRAY_SIZE(nokia770_spi_board_info));
373 	omap_gpio_init();
374 	omap_serial_init();
375 	omap_register_i2c_bus(1, 100, NULL, 0);
376 	omap_dsp_init();
377 	ads7846_dev_init();
378 	mipid_dev_init();
379 	omap_usb_init(&nokia770_usb_config);
380 	nokia770_mmc_init();
381 }
382 
383 static void __init omap_nokia770_map_io(void)
384 {
385 	omap1_map_common_io();
386 }
387 
388 MACHINE_START(NOKIA770, "Nokia 770")
389 	.phys_io	= 0xfff00000,
390 	.io_pg_offst	= ((0xfef00000) >> 18) & 0xfffc,
391 	.boot_params	= 0x10000100,
392 	.map_io		= omap_nokia770_map_io,
393 	.init_irq	= omap_nokia770_init_irq,
394 	.init_machine	= omap_nokia770_init,
395 	.timer		= &omap_timer,
396 MACHINE_END
397