Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial
[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/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
20 #include <asm/hardware.h>
21 #include <asm/mach-types.h>
22 #include <asm/mach/arch.h>
23 #include <asm/mach/map.h>
24
25 #include <asm/arch/gpio.h>
26 #include <asm/arch/mux.h>
27 #include <asm/arch/usb.h>
28 #include <asm/arch/board.h>
29 #include <asm/arch/keypad.h>
30 #include <asm/arch/common.h>
31 #include <asm/arch/dsp_common.h>
32 #include <asm/arch/aic23.h>
33 #include <asm/arch/gpio.h>
34
35 static void __init omap_nokia770_init_irq(void)
36 {
37         /* On Nokia 770, the SleepX signal is masked with an
38          * MPUIO line by default.  It has to be unmasked for it
39          * to become functional */
40
41         /* SleepX mask direction */
42         omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
43         /* Unmask SleepX signal */
44         omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
45
46         omap1_init_common_hw();
47         omap_init_irq();
48 }
49
50 static int nokia770_keymap[] = {
51         KEY(0, 1, GROUP_0 | KEY_UP),
52         KEY(0, 2, GROUP_1 | KEY_F5),
53         KEY(1, 0, GROUP_0 | KEY_LEFT),
54         KEY(1, 1, GROUP_0 | KEY_ENTER),
55         KEY(1, 2, GROUP_0 | KEY_RIGHT),
56         KEY(2, 0, GROUP_1 | KEY_ESC),
57         KEY(2, 1, GROUP_0 | KEY_DOWN),
58         KEY(2, 2, GROUP_1 | KEY_F4),
59         KEY(3, 0, GROUP_2 | KEY_F7),
60         KEY(3, 1, GROUP_2 | KEY_F8),
61         KEY(3, 2, GROUP_2 | KEY_F6),
62         0
63 };
64
65 static struct resource nokia770_kp_resources[] = {
66         [0] = {
67                 .start  = INT_KEYBOARD,
68                 .end    = INT_KEYBOARD,
69                 .flags  = IORESOURCE_IRQ,
70         },
71 };
72
73 static struct omap_kp_platform_data nokia770_kp_data = {
74         .rows           = 8,
75         .cols           = 8,
76         .keymap         = nokia770_keymap,
77         .keymapsize     = ARRAY_SIZE(nokia770_keymap)
78         .delay          = 4,
79 };
80
81 static struct platform_device nokia770_kp_device = {
82         .name           = "omap-keypad",
83         .id             = -1,
84         .dev            = {
85                 .platform_data = &nokia770_kp_data,
86         },
87         .num_resources  = ARRAY_SIZE(nokia770_kp_resources),
88         .resource       = nokia770_kp_resources,
89 };
90
91 static struct platform_device *nokia770_devices[] __initdata = {
92         &nokia770_kp_device,
93 };
94
95 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
96         .x_max          = 0x0fff,
97         .y_max          = 0x0fff,
98         .x_plate_ohms   = 180,
99         .pressure_max   = 255,
100         .debounce_max   = 10,
101         .debounce_tol   = 3,
102 };
103
104 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
105         [0] = {
106                 .modalias       = "lcd_lph8923",
107                 .bus_num        = 2,
108                 .chip_select    = 3,
109                 .max_speed_hz   = 12000000,
110         },
111         [1] = {
112                 .modalias       = "ads7846",
113                 .bus_num        = 2,
114                 .chip_select    = 0,
115                 .max_speed_hz   = 2500000,
116                 .irq            = OMAP_GPIO_IRQ(15),
117                 .platform_data  = &nokia770_ads7846_platform_data,
118         },
119 };
120
121
122 /* assume no Mini-AB port */
123
124 static struct omap_usb_config nokia770_usb_config __initdata = {
125         .otg            = 1,
126         .register_host  = 1,
127         .register_dev   = 1,
128         .hmc_mode       = 16,
129         .pins[0]        = 6,
130 };
131
132 static struct omap_mmc_config nokia770_mmc_config __initdata = {
133         .mmc[0] = {
134                 .enabled        = 0,
135                 .wire4          = 0,
136                 .wp_pin         = -1,
137                 .power_pin      = -1,
138                 .switch_pin     = -1,
139         },
140         .mmc[1] = {
141                 .enabled        = 0,
142                 .wire4          = 0,
143                 .wp_pin         = -1,
144                 .power_pin      = -1,
145                 .switch_pin     = -1,
146         },
147 };
148
149 static struct omap_board_config_kernel nokia770_config[] = {
150         { OMAP_TAG_USB,         NULL },
151         { OMAP_TAG_MMC,         &nokia770_mmc_config },
152 };
153
154 /*
155  * audio power control
156  */
157 #define HEADPHONE_GPIO          14
158 #define AMPLIFIER_CTRL_GPIO     58
159
160 static struct clk *dspxor_ck;
161 static DECLARE_MUTEX(audio_pwr_sem);
162 /*
163  * audio_pwr_state
164  * +--+-------------------------+---------------------------------------+
165  * |-1|down                     |power-up request -> 0                  |
166  * +--+-------------------------+---------------------------------------+
167  * | 0|up                       |power-down(1) request -> 1             |
168  * |  |                         |power-down(2) request -> (ignore)      |
169  * +--+-------------------------+---------------------------------------+
170  * | 1|up,                      |power-up request -> 0                  |
171  * |  |received down(1) request |power-down(2) request -> -1            |
172  * +--+-------------------------+---------------------------------------+
173  */
174 static int audio_pwr_state = -1;
175
176 /*
177  * audio_pwr_up / down should be called under audio_pwr_sem
178  */
179 static void nokia770_audio_pwr_up(void)
180 {
181         clk_enable(dspxor_ck);
182
183         /* Turn on codec */
184         tlv320aic23_power_up();
185
186         if (omap_get_gpio_datain(HEADPHONE_GPIO))
187                 /* HP not connected, turn on amplifier */
188                 omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
189         else
190                 /* HP connected, do not turn on amplifier */
191                 printk("HP connected\n");
192 }
193
194 static void codec_delayed_power_down(void *arg)
195 {
196         down(&audio_pwr_sem);
197         if (audio_pwr_state == -1)
198                 tlv320aic23_power_down();
199         clk_disable(dspxor_ck);
200         up(&audio_pwr_sem);
201 }
202
203 static DECLARE_WORK(codec_power_down_work, codec_delayed_power_down, NULL);
204
205 static void nokia770_audio_pwr_down(void)
206 {
207         /* Turn off amplifier */
208         omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
209
210         /* Turn off codec: schedule delayed work */
211         schedule_delayed_work(&codec_power_down_work, HZ / 20); /* 50ms */
212 }
213
214 void nokia770_audio_pwr_up_request(int stage)
215 {
216         down(&audio_pwr_sem);
217         if (audio_pwr_state == -1)
218                 nokia770_audio_pwr_up();
219         /* force audio_pwr_state = 0, even if it was 1. */
220         audio_pwr_state = 0;
221         up(&audio_pwr_sem);
222 }
223
224 void nokia770_audio_pwr_down_request(int stage)
225 {
226         down(&audio_pwr_sem);
227         switch (stage) {
228         case 1:
229                 if (audio_pwr_state == 0)
230                         audio_pwr_state = 1;
231                 break;
232         case 2:
233                 if (audio_pwr_state == 1) {
234                         nokia770_audio_pwr_down();
235                         audio_pwr_state = -1;
236                 }
237                 break;
238         }
239         up(&audio_pwr_sem);
240 }
241
242 static void __init omap_nokia770_init(void)
243 {
244         nokia770_config[0].data = &nokia770_usb_config;
245
246         platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
247         spi_register_board_info(nokia770_spi_board_info,
248                                 ARRAY_SIZE(nokia770_spi_board_info));
249         omap_board_config = nokia770_config;
250         omap_board_config_size = ARRAY_SIZE(nokia770_config);
251         omap_serial_init();
252         omap_dsp_audio_pwr_up_request = nokia770_audio_pwr_up_request;
253         omap_dsp_audio_pwr_down_request = nokia770_audio_pwr_down_request;
254         dspxor_ck = clk_get(0, "dspxor_ck");
255 }
256
257 static void __init omap_nokia770_map_io(void)
258 {
259         omap1_map_common_io();
260 }
261
262 MACHINE_START(NOKIA770, "Nokia 770")
263         .phys_io        = 0xfff00000,
264         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
265         .boot_params    = 0x10000100,
266         .map_io         = omap_nokia770_map_io,
267         .init_irq       = omap_nokia770_init_irq,
268         .init_machine   = omap_nokia770_init,
269         .timer          = &omap_timer,
270 MACHINE_END