1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * linux/arch/arm/mach-omap1/board-nokia770.c
4  *
5  * Modified from board-generic.c
6  */
7 #include <linux/clkdev.h>
8 #include <linux/irq.h>
9 #include <linux/gpio.h>
10 #include <linux/gpio/machine.h>
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/omapfb.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 <linux/platform_data/keypad-omap.h>
24 #include <linux/platform_data/lcd-mipid.h>
25 #include <linux/platform_data/gpio-omap.h>
26 
27 #include <asm/mach-types.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30 
31 #include "mux.h"
32 #include "hardware.h"
33 #include "usb.h"
34 #include "common.h"
35 #include "clock.h"
36 #include "mmc.h"
37 
38 #define ADS7846_PENDOWN_GPIO	15
39 
40 static const unsigned int nokia770_keymap[] = {
41 	KEY(1, 0, GROUP_0 | KEY_UP),
42 	KEY(2, 0, GROUP_1 | KEY_F5),
43 	KEY(0, 1, GROUP_0 | KEY_LEFT),
44 	KEY(1, 1, GROUP_0 | KEY_ENTER),
45 	KEY(2, 1, GROUP_0 | KEY_RIGHT),
46 	KEY(0, 2, GROUP_1 | KEY_ESC),
47 	KEY(1, 2, GROUP_0 | KEY_DOWN),
48 	KEY(2, 2, GROUP_1 | KEY_F4),
49 	KEY(0, 3, GROUP_2 | KEY_F7),
50 	KEY(1, 3, GROUP_2 | KEY_F8),
51 	KEY(2, 3, GROUP_2 | KEY_F6),
52 };
53 
54 static struct resource nokia770_kp_resources[] = {
55 	[0] = {
56 		.start	= INT_KEYBOARD,
57 		.end	= INT_KEYBOARD,
58 		.flags	= IORESOURCE_IRQ,
59 	},
60 };
61 
62 static const struct matrix_keymap_data nokia770_keymap_data = {
63 	.keymap		= nokia770_keymap,
64 	.keymap_size	= ARRAY_SIZE(nokia770_keymap),
65 };
66 
67 static struct omap_kp_platform_data nokia770_kp_data = {
68 	.rows		= 8,
69 	.cols		= 8,
70 	.keymap_data	= &nokia770_keymap_data,
71 	.delay		= 4,
72 };
73 
74 static struct platform_device nokia770_kp_device = {
75 	.name		= "omap-keypad",
76 	.id		= -1,
77 	.dev		= {
78 		.platform_data = &nokia770_kp_data,
79 	},
80 	.num_resources	= ARRAY_SIZE(nokia770_kp_resources),
81 	.resource	= nokia770_kp_resources,
82 };
83 
84 static struct platform_device *nokia770_devices[] __initdata = {
85 	&nokia770_kp_device,
86 };
87 
88 static void mipid_shutdown(struct mipid_platform_data *pdata)
89 {
90 	if (pdata->nreset_gpio != -1) {
91 		printk(KERN_INFO "shutdown LCD\n");
92 		gpio_set_value(pdata->nreset_gpio, 0);
93 		msleep(120);
94 	}
95 }
96 
97 static struct mipid_platform_data nokia770_mipid_platform_data = {
98 	.shutdown = mipid_shutdown,
99 };
100 
101 static const struct omap_lcd_config nokia770_lcd_config __initconst = {
102 	.ctrl_name	= "hwa742",
103 };
104 
105 static void __init mipid_dev_init(void)
106 {
107 	nokia770_mipid_platform_data.nreset_gpio = 13;
108 	nokia770_mipid_platform_data.data_lines = 16;
109 
110 	omapfb_set_lcd_config(&nokia770_lcd_config);
111 }
112 
113 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
114 	.x_max		= 0x0fff,
115 	.y_max		= 0x0fff,
116 	.x_plate_ohms	= 180,
117 	.pressure_max	= 255,
118 	.debounce_max	= 10,
119 	.debounce_tol	= 3,
120 	.debounce_rep	= 1,
121 	.gpio_pendown	= ADS7846_PENDOWN_GPIO,
122 };
123 
124 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
125 	[0] = {
126 		.modalias       = "lcd_mipid",
127 		.bus_num        = 2,
128 		.chip_select    = 3,
129 		.max_speed_hz   = 12000000,
130 		.platform_data	= &nokia770_mipid_platform_data,
131 	},
132 	[1] = {
133 		.modalias       = "ads7846",
134 		.bus_num        = 2,
135 		.chip_select    = 0,
136 		.max_speed_hz   = 2500000,
137 		.platform_data	= &nokia770_ads7846_platform_data,
138 	},
139 };
140 
141 static void __init hwa742_dev_init(void)
142 {
143 	clk_add_alias("hwa_sys_ck", NULL, "bclk", NULL);
144 }
145 
146 /* assume no Mini-AB port */
147 
148 static struct omap_usb_config nokia770_usb_config __initdata = {
149 	.otg		= 1,
150 	.register_host	= 1,
151 	.register_dev	= 1,
152 	.hmc_mode	= 16,
153 	.pins[0]	= 6,
154 	.extcon		= "tahvo-usb",
155 };
156 
157 #if IS_ENABLED(CONFIG_MMC_OMAP)
158 
159 #define NOKIA770_GPIO_MMC_POWER		41
160 #define NOKIA770_GPIO_MMC_SWITCH	23
161 
162 static int nokia770_mmc_set_power(struct device *dev, int slot, int power_on,
163 				int vdd)
164 {
165 	gpio_set_value(NOKIA770_GPIO_MMC_POWER, power_on);
166 	return 0;
167 }
168 
169 static int nokia770_mmc_get_cover_state(struct device *dev, int slot)
170 {
171 	return gpio_get_value(NOKIA770_GPIO_MMC_SWITCH);
172 }
173 
174 static struct omap_mmc_platform_data nokia770_mmc2_data = {
175 	.nr_slots                       = 1,
176 	.max_freq                       = 12000000,
177 	.slots[0]       = {
178 		.set_power		= nokia770_mmc_set_power,
179 		.get_cover_state	= nokia770_mmc_get_cover_state,
180 		.ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
181 		.name                   = "mmcblk",
182 	},
183 };
184 
185 static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];
186 
187 static void __init nokia770_mmc_init(void)
188 {
189 	int ret;
190 
191 	ret = gpio_request(NOKIA770_GPIO_MMC_POWER, "MMC power");
192 	if (ret < 0)
193 		return;
194 	gpio_direction_output(NOKIA770_GPIO_MMC_POWER, 0);
195 
196 	ret = gpio_request(NOKIA770_GPIO_MMC_SWITCH, "MMC cover");
197 	if (ret < 0) {
198 		gpio_free(NOKIA770_GPIO_MMC_POWER);
199 		return;
200 	}
201 	gpio_direction_input(NOKIA770_GPIO_MMC_SWITCH);
202 
203 	/* Only the second MMC controller is used */
204 	nokia770_mmc_data[1] = &nokia770_mmc2_data;
205 	omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
206 }
207 
208 #else
209 static inline void nokia770_mmc_init(void)
210 {
211 }
212 #endif
213 
214 #if IS_ENABLED(CONFIG_I2C_CBUS_GPIO)
215 static struct gpiod_lookup_table nokia770_cbus_gpio_table = {
216 	.dev_id = "i2c-cbus-gpio.2",
217 	.table = {
218 		GPIO_LOOKUP_IDX("mpuio", 9, NULL, 0, 0), /* clk */
219 		GPIO_LOOKUP_IDX("mpuio", 10, NULL, 1, 0), /* dat */
220 		GPIO_LOOKUP_IDX("mpuio", 11, NULL, 2, 0), /* sel */
221 		{ },
222 	},
223 };
224 
225 static struct platform_device nokia770_cbus_device = {
226 	.name   = "i2c-cbus-gpio",
227 	.id     = 2,
228 };
229 
230 static struct i2c_board_info nokia770_i2c_board_info_2[] __initdata = {
231 	{
232 		I2C_BOARD_INFO("retu", 0x01),
233 	},
234 	{
235 		I2C_BOARD_INFO("tahvo", 0x02),
236 	},
237 };
238 
239 static void __init nokia770_cbus_init(void)
240 {
241 	const int retu_irq_gpio = 62;
242 	const int tahvo_irq_gpio = 40;
243 
244 	if (gpio_request_one(retu_irq_gpio, GPIOF_IN, "Retu IRQ"))
245 		return;
246 	if (gpio_request_one(tahvo_irq_gpio, GPIOF_IN, "Tahvo IRQ")) {
247 		gpio_free(retu_irq_gpio);
248 		return;
249 	}
250 	irq_set_irq_type(gpio_to_irq(retu_irq_gpio), IRQ_TYPE_EDGE_RISING);
251 	irq_set_irq_type(gpio_to_irq(tahvo_irq_gpio), IRQ_TYPE_EDGE_RISING);
252 	nokia770_i2c_board_info_2[0].irq = gpio_to_irq(retu_irq_gpio);
253 	nokia770_i2c_board_info_2[1].irq = gpio_to_irq(tahvo_irq_gpio);
254 	i2c_register_board_info(2, nokia770_i2c_board_info_2,
255 				ARRAY_SIZE(nokia770_i2c_board_info_2));
256 	gpiod_add_lookup_table(&nokia770_cbus_gpio_table);
257 	platform_device_register(&nokia770_cbus_device);
258 }
259 #else /* CONFIG_I2C_CBUS_GPIO */
260 static void __init nokia770_cbus_init(void)
261 {
262 }
263 #endif /* CONFIG_I2C_CBUS_GPIO */
264 
265 static void __init omap_nokia770_init(void)
266 {
267 	/* On Nokia 770, the SleepX signal is masked with an
268 	 * MPUIO line by default.  It has to be unmasked for it
269 	 * to become functional */
270 
271 	/* SleepX mask direction */
272 	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
273 	/* Unmask SleepX signal */
274 	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
275 
276 	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
277 	nokia770_spi_board_info[1].irq = gpio_to_irq(15);
278 	spi_register_board_info(nokia770_spi_board_info,
279 				ARRAY_SIZE(nokia770_spi_board_info));
280 	omap_serial_init();
281 	omap_register_i2c_bus(1, 100, NULL, 0);
282 	hwa742_dev_init();
283 	mipid_dev_init();
284 	omap1_usb_init(&nokia770_usb_config);
285 	nokia770_mmc_init();
286 	nokia770_cbus_init();
287 }
288 
289 MACHINE_START(NOKIA770, "Nokia 770")
290 	.atag_offset	= 0x100,
291 	.map_io		= omap1_map_io,
292 	.init_early     = omap1_init_early,
293 	.init_irq	= omap1_init_irq,
294 	.handle_irq	= omap1_handle_irq,
295 	.init_machine	= omap_nokia770_init,
296 	.init_late	= omap1_init_late,
297 	.init_time	= omap1_timer_init,
298 	.restart	= omap1_restart,
299 MACHINE_END
300