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 #include <linux/omapfb.h>
18 
19 #include <linux/spi/spi.h>
20 #include <linux/spi/ads7846.h>
21 #include <linux/workqueue.h>
22 #include <linux/delay.h>
23 
24 #include <mach/hardware.h>
25 #include <asm/mach-types.h>
26 #include <asm/mach/arch.h>
27 #include <asm/mach/map.h>
28 
29 #include <mach/gpio.h>
30 #include <plat/mux.h>
31 #include <plat/usb.h>
32 #include <plat/board.h>
33 #include <plat/keypad.h>
34 #include <plat/common.h>
35 #include <plat/dsp_common.h>
36 #include <plat/hwa742.h>
37 #include <plat/lcd_mipid.h>
38 #include <plat/mmc.h>
39 #include <plat/clock.h>
40 
41 #define ADS7846_PENDOWN_GPIO	15
42 
43 static void __init omap_nokia770_init_irq(void)
44 {
45 	/* On Nokia 770, the SleepX signal is masked with an
46 	 * MPUIO line by default.  It has to be unmasked for it
47 	 * to become functional */
48 
49 	/* SleepX mask direction */
50 	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
51 	/* Unmask SleepX signal */
52 	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
53 
54 	omap1_init_common_hw();
55 	omap_init_irq();
56 }
57 
58 static int nokia770_keymap[] = {
59 	KEY(0, 1, GROUP_0 | KEY_UP),
60 	KEY(0, 2, GROUP_1 | KEY_F5),
61 	KEY(1, 0, GROUP_0 | KEY_LEFT),
62 	KEY(1, 1, GROUP_0 | KEY_ENTER),
63 	KEY(1, 2, GROUP_0 | KEY_RIGHT),
64 	KEY(2, 0, GROUP_1 | KEY_ESC),
65 	KEY(2, 1, GROUP_0 | KEY_DOWN),
66 	KEY(2, 2, GROUP_1 | KEY_F4),
67 	KEY(3, 0, GROUP_2 | KEY_F7),
68 	KEY(3, 1, GROUP_2 | KEY_F8),
69 	KEY(3, 2, GROUP_2 | KEY_F6),
70 	0
71 };
72 
73 static struct resource nokia770_kp_resources[] = {
74 	[0] = {
75 		.start	= INT_KEYBOARD,
76 		.end	= INT_KEYBOARD,
77 		.flags	= IORESOURCE_IRQ,
78 	},
79 };
80 
81 static struct omap_kp_platform_data nokia770_kp_data = {
82 	.rows		= 8,
83 	.cols		= 8,
84 	.keymap		= nokia770_keymap,
85 	.keymapsize	= ARRAY_SIZE(nokia770_keymap),
86 	.delay		= 4,
87 };
88 
89 static struct platform_device nokia770_kp_device = {
90 	.name		= "omap-keypad",
91 	.id		= -1,
92 	.dev		= {
93 		.platform_data = &nokia770_kp_data,
94 	},
95 	.num_resources	= ARRAY_SIZE(nokia770_kp_resources),
96 	.resource	= nokia770_kp_resources,
97 };
98 
99 static struct platform_device *nokia770_devices[] __initdata = {
100 	&nokia770_kp_device,
101 };
102 
103 static void mipid_shutdown(struct mipid_platform_data *pdata)
104 {
105 	if (pdata->nreset_gpio != -1) {
106 		printk(KERN_INFO "shutdown LCD\n");
107 		gpio_set_value(pdata->nreset_gpio, 0);
108 		msleep(120);
109 	}
110 }
111 
112 static struct mipid_platform_data nokia770_mipid_platform_data = {
113 	.shutdown = mipid_shutdown,
114 };
115 
116 static void mipid_dev_init(void)
117 {
118 	const struct omap_lcd_config *conf;
119 
120 	conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
121 	if (conf != NULL) {
122 		nokia770_mipid_platform_data.nreset_gpio = conf->nreset_gpio;
123 		nokia770_mipid_platform_data.data_lines = conf->data_lines;
124 	}
125 }
126 
127 static void ads7846_dev_init(void)
128 {
129 	if (gpio_request(ADS7846_PENDOWN_GPIO, "ADS7846 pendown") < 0)
130 		printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
131 }
132 
133 static int ads7846_get_pendown_state(void)
134 {
135 	return !gpio_get_value(ADS7846_PENDOWN_GPIO);
136 }
137 
138 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
139 	.x_max		= 0x0fff,
140 	.y_max		= 0x0fff,
141 	.x_plate_ohms	= 180,
142 	.pressure_max	= 255,
143 	.debounce_max	= 10,
144 	.debounce_tol	= 3,
145 	.debounce_rep	= 1,
146 	.get_pendown_state	= ads7846_get_pendown_state,
147 };
148 
149 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
150 	[0] = {
151 		.modalias       = "lcd_mipid",
152 		.bus_num        = 2,
153 		.chip_select    = 3,
154 		.max_speed_hz   = 12000000,
155 		.platform_data	= &nokia770_mipid_platform_data,
156 	},
157 	[1] = {
158 		.modalias       = "ads7846",
159 		.bus_num        = 2,
160 		.chip_select    = 0,
161 		.max_speed_hz   = 2500000,
162 		.irq		= OMAP_GPIO_IRQ(15),
163 		.platform_data	= &nokia770_ads7846_platform_data,
164 	},
165 };
166 
167 static struct hwa742_platform_data nokia770_hwa742_platform_data = {
168 	.te_connected		= 1,
169 };
170 
171 static void hwa742_dev_init(void)
172 {
173 	clk_add_alias("hwa_sys_ck", NULL, "bclk", NULL);
174 	omapfb_set_ctrl_platform_data(&nokia770_hwa742_platform_data);
175 }
176 
177 /* assume no Mini-AB port */
178 
179 static struct omap_usb_config nokia770_usb_config __initdata = {
180 	.otg		= 1,
181 	.register_host	= 1,
182 	.register_dev	= 1,
183 	.hmc_mode	= 16,
184 	.pins[0]	= 6,
185 };
186 
187 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
188 
189 #define NOKIA770_GPIO_MMC_POWER		41
190 #define NOKIA770_GPIO_MMC_SWITCH	23
191 
192 static int nokia770_mmc_set_power(struct device *dev, int slot, int power_on,
193 				int vdd)
194 {
195 	gpio_set_value(NOKIA770_GPIO_MMC_POWER, power_on);
196 	return 0;
197 }
198 
199 static int nokia770_mmc_get_cover_state(struct device *dev, int slot)
200 {
201 	return gpio_get_value(NOKIA770_GPIO_MMC_SWITCH);
202 }
203 
204 static struct omap_mmc_platform_data nokia770_mmc2_data = {
205 	.nr_slots                       = 1,
206 	.dma_mask			= 0xffffffff,
207 	.max_freq                       = 12000000,
208 	.slots[0]       = {
209 		.set_power		= nokia770_mmc_set_power,
210 		.get_cover_state	= nokia770_mmc_get_cover_state,
211 		.ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
212 		.name                   = "mmcblk",
213 	},
214 };
215 
216 static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];
217 
218 static void __init nokia770_mmc_init(void)
219 {
220 	int ret;
221 
222 	ret = gpio_request(NOKIA770_GPIO_MMC_POWER, "MMC power");
223 	if (ret < 0)
224 		return;
225 	gpio_direction_output(NOKIA770_GPIO_MMC_POWER, 0);
226 
227 	ret = gpio_request(NOKIA770_GPIO_MMC_SWITCH, "MMC cover");
228 	if (ret < 0) {
229 		gpio_free(NOKIA770_GPIO_MMC_POWER);
230 		return;
231 	}
232 	gpio_direction_input(NOKIA770_GPIO_MMC_SWITCH);
233 
234 	/* Only the second MMC controller is used */
235 	nokia770_mmc_data[1] = &nokia770_mmc2_data;
236 	omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
237 }
238 
239 #else
240 static inline void nokia770_mmc_init(void)
241 {
242 }
243 #endif
244 
245 #if	defined(CONFIG_OMAP_DSP)
246 /*
247  * audio power control
248  */
249 #define	HEADPHONE_GPIO		14
250 #define	AMPLIFIER_CTRL_GPIO	58
251 
252 static struct clk *dspxor_ck;
253 static DEFINE_MUTEX(audio_pwr_lock);
254 /*
255  * audio_pwr_state
256  * +--+-------------------------+---------------------------------------+
257  * |-1|down			|power-up request -> 0			|
258  * +--+-------------------------+---------------------------------------+
259  * | 0|up			|power-down(1) request -> 1		|
260  * |  |				|power-down(2) request -> (ignore)	|
261  * +--+-------------------------+---------------------------------------+
262  * | 1|up,			|power-up request -> 0			|
263  * |  |received down(1) request	|power-down(2) request -> -1		|
264  * +--+-------------------------+---------------------------------------+
265  */
266 static int audio_pwr_state = -1;
267 
268 static inline void aic23_power_up(void)
269 {
270 }
271 static inline void aic23_power_down(void)
272 {
273 }
274 
275 /*
276  * audio_pwr_up / down should be called under audio_pwr_lock
277  */
278 static void nokia770_audio_pwr_up(void)
279 {
280 	clk_enable(dspxor_ck);
281 
282 	/* Turn on codec */
283 	aic23_power_up();
284 
285 	if (gpio_get_value(HEADPHONE_GPIO))
286 		/* HP not connected, turn on amplifier */
287 		gpio_set_value(AMPLIFIER_CTRL_GPIO, 1);
288 	else
289 		/* HP connected, do not turn on amplifier */
290 		printk("HP connected\n");
291 }
292 
293 static void codec_delayed_power_down(struct work_struct *work)
294 {
295 	mutex_lock(&audio_pwr_lock);
296 	if (audio_pwr_state == -1)
297 		aic23_power_down();
298 	clk_disable(dspxor_ck);
299 	mutex_unlock(&audio_pwr_lock);
300 }
301 
302 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
303 
304 static void nokia770_audio_pwr_down(void)
305 {
306 	/* Turn off amplifier */
307 	gpio_set_value(AMPLIFIER_CTRL_GPIO, 0);
308 
309 	/* Turn off codec: schedule delayed work */
310 	schedule_delayed_work(&codec_power_down_work, HZ / 20);	/* 50ms */
311 }
312 
313 static int
314 nokia770_audio_pwr_up_request(struct dsp_kfunc_device *kdev, int stage)
315 {
316 	mutex_lock(&audio_pwr_lock);
317 	if (audio_pwr_state == -1)
318 		nokia770_audio_pwr_up();
319 	/* force audio_pwr_state = 0, even if it was 1. */
320 	audio_pwr_state = 0;
321 	mutex_unlock(&audio_pwr_lock);
322 	return 0;
323 }
324 
325 static int
326 nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
327 {
328 	mutex_lock(&audio_pwr_lock);
329 	switch (stage) {
330 	case 1:
331 		if (audio_pwr_state == 0)
332 			audio_pwr_state = 1;
333 		break;
334 	case 2:
335 		if (audio_pwr_state == 1) {
336 			nokia770_audio_pwr_down();
337 			audio_pwr_state = -1;
338 		}
339 		break;
340 	}
341 	mutex_unlock(&audio_pwr_lock);
342 	return 0;
343 }
344 
345 static struct dsp_kfunc_device nokia770_audio_device = {
346 	.name	 = "audio",
347 	.type	 = DSP_KFUNC_DEV_TYPE_AUDIO,
348 	.enable  = nokia770_audio_pwr_up_request,
349 	.disable = nokia770_audio_pwr_down_request,
350 };
351 
352 static __init int omap_dsp_init(void)
353 {
354 	int ret;
355 
356 	dspxor_ck = clk_get(0, "dspxor_ck");
357 	if (IS_ERR(dspxor_ck)) {
358 		printk(KERN_ERR "couldn't acquire dspxor_ck\n");
359 		return PTR_ERR(dspxor_ck);
360 	}
361 
362 	ret = dsp_kfunc_device_register(&nokia770_audio_device);
363 	if (ret) {
364 		printk(KERN_ERR
365 		       "KFUNC device registration faild: %s\n",
366 		       nokia770_audio_device.name);
367 		goto out;
368 	}
369 	return 0;
370  out:
371 	return ret;
372 }
373 #else
374 #define omap_dsp_init()		do {} while (0)
375 #endif	/* CONFIG_OMAP_DSP */
376 
377 static void __init omap_nokia770_init(void)
378 {
379 	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
380 	spi_register_board_info(nokia770_spi_board_info,
381 				ARRAY_SIZE(nokia770_spi_board_info));
382 	omap_gpio_init();
383 	omap_serial_init();
384 	omap_register_i2c_bus(1, 100, NULL, 0);
385 	omap_dsp_init();
386 	hwa742_dev_init();
387 	ads7846_dev_init();
388 	mipid_dev_init();
389 	omap_usb_init(&nokia770_usb_config);
390 	nokia770_mmc_init();
391 }
392 
393 static void __init omap_nokia770_map_io(void)
394 {
395 	omap1_map_common_io();
396 }
397 
398 MACHINE_START(NOKIA770, "Nokia 770")
399 	.phys_io	= 0xfff00000,
400 	.io_pg_offst	= ((0xfef00000) >> 18) & 0xfffc,
401 	.boot_params	= 0x10000100,
402 	.map_io		= omap_nokia770_map_io,
403 	.init_irq	= omap_nokia770_init_irq,
404 	.init_machine	= omap_nokia770_init,
405 	.timer		= &omap_timer,
406 MACHINE_END
407