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 #include <linux/clkdev.h>
11 #include <linux/irq.h>
12 #include <linux/gpio.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/mutex.h>
16 #include <linux/platform_device.h>
17 #include <linux/input.h>
18 #include <linux/omapfb.h>
19 
20 #include <linux/spi/spi.h>
21 #include <linux/spi/ads7846.h>
22 #include <linux/workqueue.h>
23 #include <linux/delay.h>
24 
25 #include <linux/platform_data/keypad-omap.h>
26 #include <linux/platform_data/lcd-mipid.h>
27 #include <linux/platform_data/gpio-omap.h>
28 #include <linux/platform_data/i2c-cbus-gpio.h>
29 
30 #include <asm/mach-types.h>
31 #include <asm/mach/arch.h>
32 #include <asm/mach/map.h>
33 
34 #include <mach/mux.h>
35 
36 #include <mach/hardware.h>
37 #include <mach/usb.h>
38 
39 #include "common.h"
40 #include "clock.h"
41 #include "mmc.h"
42 
43 #define ADS7846_PENDOWN_GPIO	15
44 
45 static const unsigned int nokia770_keymap[] = {
46 	KEY(1, 0, GROUP_0 | KEY_UP),
47 	KEY(2, 0, GROUP_1 | KEY_F5),
48 	KEY(0, 1, GROUP_0 | KEY_LEFT),
49 	KEY(1, 1, GROUP_0 | KEY_ENTER),
50 	KEY(2, 1, GROUP_0 | KEY_RIGHT),
51 	KEY(0, 2, GROUP_1 | KEY_ESC),
52 	KEY(1, 2, GROUP_0 | KEY_DOWN),
53 	KEY(2, 2, GROUP_1 | KEY_F4),
54 	KEY(0, 3, GROUP_2 | KEY_F7),
55 	KEY(1, 3, GROUP_2 | KEY_F8),
56 	KEY(2, 3, GROUP_2 | KEY_F6),
57 };
58 
59 static struct resource nokia770_kp_resources[] = {
60 	[0] = {
61 		.start	= INT_KEYBOARD,
62 		.end	= INT_KEYBOARD,
63 		.flags	= IORESOURCE_IRQ,
64 	},
65 };
66 
67 static const struct matrix_keymap_data nokia770_keymap_data = {
68 	.keymap		= nokia770_keymap,
69 	.keymap_size	= ARRAY_SIZE(nokia770_keymap),
70 };
71 
72 static struct omap_kp_platform_data nokia770_kp_data = {
73 	.rows		= 8,
74 	.cols		= 8,
75 	.keymap_data	= &nokia770_keymap_data,
76 	.delay		= 4,
77 };
78 
79 static struct platform_device nokia770_kp_device = {
80 	.name		= "omap-keypad",
81 	.id		= -1,
82 	.dev		= {
83 		.platform_data = &nokia770_kp_data,
84 	},
85 	.num_resources	= ARRAY_SIZE(nokia770_kp_resources),
86 	.resource	= nokia770_kp_resources,
87 };
88 
89 static struct platform_device *nokia770_devices[] __initdata = {
90 	&nokia770_kp_device,
91 };
92 
93 static void mipid_shutdown(struct mipid_platform_data *pdata)
94 {
95 	if (pdata->nreset_gpio != -1) {
96 		printk(KERN_INFO "shutdown LCD\n");
97 		gpio_set_value(pdata->nreset_gpio, 0);
98 		msleep(120);
99 	}
100 }
101 
102 static struct mipid_platform_data nokia770_mipid_platform_data = {
103 	.shutdown = mipid_shutdown,
104 };
105 
106 static const struct omap_lcd_config nokia770_lcd_config __initconst = {
107 	.ctrl_name	= "hwa742",
108 };
109 
110 static void __init mipid_dev_init(void)
111 {
112 	nokia770_mipid_platform_data.nreset_gpio = 13;
113 	nokia770_mipid_platform_data.data_lines = 16;
114 
115 	omapfb_set_lcd_config(&nokia770_lcd_config);
116 }
117 
118 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
119 	.x_max		= 0x0fff,
120 	.y_max		= 0x0fff,
121 	.x_plate_ohms	= 180,
122 	.pressure_max	= 255,
123 	.debounce_max	= 10,
124 	.debounce_tol	= 3,
125 	.debounce_rep	= 1,
126 	.gpio_pendown	= ADS7846_PENDOWN_GPIO,
127 };
128 
129 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
130 	[0] = {
131 		.modalias       = "lcd_mipid",
132 		.bus_num        = 2,
133 		.chip_select    = 3,
134 		.max_speed_hz   = 12000000,
135 		.platform_data	= &nokia770_mipid_platform_data,
136 	},
137 	[1] = {
138 		.modalias       = "ads7846",
139 		.bus_num        = 2,
140 		.chip_select    = 0,
141 		.max_speed_hz   = 2500000,
142 		.platform_data	= &nokia770_ads7846_platform_data,
143 	},
144 };
145 
146 static void __init hwa742_dev_init(void)
147 {
148 	clk_add_alias("hwa_sys_ck", NULL, "bclk", NULL);
149 }
150 
151 /* assume no Mini-AB port */
152 
153 static struct omap_usb_config nokia770_usb_config __initdata = {
154 	.otg		= 1,
155 	.register_host	= 1,
156 	.register_dev	= 1,
157 	.hmc_mode	= 16,
158 	.pins[0]	= 6,
159 	.extcon		= "tahvo-usb",
160 };
161 
162 #if IS_ENABLED(CONFIG_MMC_OMAP)
163 
164 #define NOKIA770_GPIO_MMC_POWER		41
165 #define NOKIA770_GPIO_MMC_SWITCH	23
166 
167 static int nokia770_mmc_set_power(struct device *dev, int slot, int power_on,
168 				int vdd)
169 {
170 	gpio_set_value(NOKIA770_GPIO_MMC_POWER, power_on);
171 	return 0;
172 }
173 
174 static int nokia770_mmc_get_cover_state(struct device *dev, int slot)
175 {
176 	return gpio_get_value(NOKIA770_GPIO_MMC_SWITCH);
177 }
178 
179 static struct omap_mmc_platform_data nokia770_mmc2_data = {
180 	.nr_slots                       = 1,
181 	.max_freq                       = 12000000,
182 	.slots[0]       = {
183 		.set_power		= nokia770_mmc_set_power,
184 		.get_cover_state	= nokia770_mmc_get_cover_state,
185 		.ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
186 		.name                   = "mmcblk",
187 	},
188 };
189 
190 static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];
191 
192 static void __init nokia770_mmc_init(void)
193 {
194 	int ret;
195 
196 	ret = gpio_request(NOKIA770_GPIO_MMC_POWER, "MMC power");
197 	if (ret < 0)
198 		return;
199 	gpio_direction_output(NOKIA770_GPIO_MMC_POWER, 0);
200 
201 	ret = gpio_request(NOKIA770_GPIO_MMC_SWITCH, "MMC cover");
202 	if (ret < 0) {
203 		gpio_free(NOKIA770_GPIO_MMC_POWER);
204 		return;
205 	}
206 	gpio_direction_input(NOKIA770_GPIO_MMC_SWITCH);
207 
208 	/* Only the second MMC controller is used */
209 	nokia770_mmc_data[1] = &nokia770_mmc2_data;
210 	omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
211 }
212 
213 #else
214 static inline void nokia770_mmc_init(void)
215 {
216 }
217 #endif
218 
219 #if IS_ENABLED(CONFIG_I2C_CBUS_GPIO)
220 static struct i2c_cbus_platform_data nokia770_cbus_data = {
221 	.clk_gpio = OMAP_MPUIO(9),
222 	.dat_gpio = OMAP_MPUIO(10),
223 	.sel_gpio = OMAP_MPUIO(11),
224 };
225 
226 static struct platform_device nokia770_cbus_device = {
227 	.name   = "i2c-cbus-gpio",
228 	.id     = 2,
229 	.dev    = {
230 		.platform_data = &nokia770_cbus_data,
231 	},
232 };
233 
234 static struct i2c_board_info nokia770_i2c_board_info_2[] __initdata = {
235 	{
236 		I2C_BOARD_INFO("retu", 0x01),
237 	},
238 	{
239 		I2C_BOARD_INFO("tahvo", 0x02),
240 	},
241 };
242 
243 static void __init nokia770_cbus_init(void)
244 {
245 	const int retu_irq_gpio = 62;
246 	const int tahvo_irq_gpio = 40;
247 
248 	if (gpio_request_one(retu_irq_gpio, GPIOF_IN, "Retu IRQ"))
249 		return;
250 	if (gpio_request_one(tahvo_irq_gpio, GPIOF_IN, "Tahvo IRQ")) {
251 		gpio_free(retu_irq_gpio);
252 		return;
253 	}
254 	irq_set_irq_type(gpio_to_irq(retu_irq_gpio), IRQ_TYPE_EDGE_RISING);
255 	irq_set_irq_type(gpio_to_irq(tahvo_irq_gpio), IRQ_TYPE_EDGE_RISING);
256 	nokia770_i2c_board_info_2[0].irq = gpio_to_irq(retu_irq_gpio);
257 	nokia770_i2c_board_info_2[1].irq = gpio_to_irq(tahvo_irq_gpio);
258 	i2c_register_board_info(2, nokia770_i2c_board_info_2,
259 				ARRAY_SIZE(nokia770_i2c_board_info_2));
260 	platform_device_register(&nokia770_cbus_device);
261 }
262 #else /* CONFIG_I2C_CBUS_GPIO */
263 static void __init nokia770_cbus_init(void)
264 {
265 }
266 #endif /* CONFIG_I2C_CBUS_GPIO */
267 
268 static void __init omap_nokia770_init(void)
269 {
270 	/* On Nokia 770, the SleepX signal is masked with an
271 	 * MPUIO line by default.  It has to be unmasked for it
272 	 * to become functional */
273 
274 	/* SleepX mask direction */
275 	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
276 	/* Unmask SleepX signal */
277 	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
278 
279 	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
280 	nokia770_spi_board_info[1].irq = gpio_to_irq(15);
281 	spi_register_board_info(nokia770_spi_board_info,
282 				ARRAY_SIZE(nokia770_spi_board_info));
283 	omap_serial_init();
284 	omap_register_i2c_bus(1, 100, NULL, 0);
285 	hwa742_dev_init();
286 	mipid_dev_init();
287 	omap1_usb_init(&nokia770_usb_config);
288 	nokia770_mmc_init();
289 	nokia770_cbus_init();
290 }
291 
292 MACHINE_START(NOKIA770, "Nokia 770")
293 	.atag_offset	= 0x100,
294 	.map_io		= omap16xx_map_io,
295 	.init_early     = omap1_init_early,
296 	.init_irq	= omap1_init_irq,
297 	.handle_irq	= omap1_handle_irq,
298 	.init_machine	= omap_nokia770_init,
299 	.init_late	= omap1_init_late,
300 	.init_time	= omap1_timer_init,
301 	.restart	= omap1_restart,
302 MACHINE_END
303