Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
[linux-2.6] / arch / arm / mach-omap1 / board-nokia770.c
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