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/consumer.h>
10 #include <linux/gpio/machine.h>
11 #include <linux/gpio/property.h>
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/mutex.h>
15 #include <linux/platform_device.h>
16 #include <linux/property.h>
17 #include <linux/input.h>
18 #include <linux/omapfb.h>
19 
20 #include <linux/spi/spi.h>
21 #include <linux/workqueue.h>
22 #include <linux/delay.h>
23 
24 #include <linux/platform_data/keypad-omap.h>
25 #include <linux/platform_data/lcd-mipid.h>
26 #include <linux/platform_data/gpio-omap.h>
27 
28 #include <asm/mach-types.h>
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
31 
32 #include "mux.h"
33 #include "hardware.h"
34 #include "usb.h"
35 #include "common.h"
36 #include "clock.h"
37 #include "mmc.h"
38 
39 static const struct software_node nokia770_mpuio_gpiochip_node = {
40 	.name = "mpuio",
41 };
42 
43 static const struct software_node nokia770_gpiochip1_node = {
44 	.name = "gpio-0-15",
45 };
46 
47 static const struct software_node nokia770_gpiochip2_node = {
48 	.name = "gpio-16-31",
49 };
50 
51 static const struct software_node *nokia770_gpiochip_nodes[] = {
52 	&nokia770_mpuio_gpiochip_node,
53 	&nokia770_gpiochip1_node,
54 	&nokia770_gpiochip2_node,
55 	NULL
56 };
57 
58 #define ADS7846_PENDOWN_GPIO	15
59 
60 static const unsigned int nokia770_keymap[] = {
61 	KEY(1, 0, GROUP_0 | KEY_UP),
62 	KEY(2, 0, GROUP_1 | KEY_F5),
63 	KEY(0, 1, GROUP_0 | KEY_LEFT),
64 	KEY(1, 1, GROUP_0 | KEY_ENTER),
65 	KEY(2, 1, GROUP_0 | KEY_RIGHT),
66 	KEY(0, 2, GROUP_1 | KEY_ESC),
67 	KEY(1, 2, GROUP_0 | KEY_DOWN),
68 	KEY(2, 2, GROUP_1 | KEY_F4),
69 	KEY(0, 3, GROUP_2 | KEY_F7),
70 	KEY(1, 3, GROUP_2 | KEY_F8),
71 	KEY(2, 3, GROUP_2 | KEY_F6),
72 };
73 
74 static struct resource nokia770_kp_resources[] = {
75 	[0] = {
76 		.start	= INT_KEYBOARD,
77 		.end	= INT_KEYBOARD,
78 		.flags	= IORESOURCE_IRQ,
79 	},
80 };
81 
82 static const struct matrix_keymap_data nokia770_keymap_data = {
83 	.keymap		= nokia770_keymap,
84 	.keymap_size	= ARRAY_SIZE(nokia770_keymap),
85 };
86 
87 static struct omap_kp_platform_data nokia770_kp_data = {
88 	.rows		= 8,
89 	.cols		= 8,
90 	.keymap_data	= &nokia770_keymap_data,
91 	.delay		= 4,
92 };
93 
94 static struct platform_device nokia770_kp_device = {
95 	.name		= "omap-keypad",
96 	.id		= -1,
97 	.dev		= {
98 		.platform_data = &nokia770_kp_data,
99 	},
100 	.num_resources	= ARRAY_SIZE(nokia770_kp_resources),
101 	.resource	= nokia770_kp_resources,
102 };
103 
104 static struct platform_device *nokia770_devices[] __initdata = {
105 	&nokia770_kp_device,
106 };
107 
108 static struct mipid_platform_data nokia770_mipid_platform_data = { };
109 
110 static const struct omap_lcd_config nokia770_lcd_config __initconst = {
111 	.ctrl_name	= "hwa742",
112 };
113 
114 static const struct property_entry nokia770_mipid_props[] = {
115 	PROPERTY_ENTRY_GPIO("reset-gpios", &nokia770_gpiochip1_node,
116 			    13, GPIO_ACTIVE_LOW),
117 	{ }
118 };
119 
120 static const struct software_node nokia770_mipid_swnode = {
121 	.name = "lcd_mipid",
122 	.properties = nokia770_mipid_props,
123 };
124 
125 static void __init mipid_dev_init(void)
126 {
127 	nokia770_mipid_platform_data.data_lines = 16;
128 
129 	omapfb_set_lcd_config(&nokia770_lcd_config);
130 }
131 
132 static const struct property_entry nokia770_ads7846_props[] = {
133 	PROPERTY_ENTRY_STRING("compatible", "ti,ads7846"),
134 	PROPERTY_ENTRY_U32("touchscreen-size-x", 4096),
135 	PROPERTY_ENTRY_U32("touchscreen-size-y", 4096),
136 	PROPERTY_ENTRY_U32("touchscreen-max-pressure", 256),
137 	PROPERTY_ENTRY_U32("touchscreen-average-samples", 10),
138 	PROPERTY_ENTRY_U16("ti,x-plate-ohms", 180),
139 	PROPERTY_ENTRY_U16("ti,debounce-tol", 3),
140 	PROPERTY_ENTRY_U16("ti,debounce-rep", 1),
141 	PROPERTY_ENTRY_GPIO("pendown-gpios", &nokia770_gpiochip1_node,
142 			    ADS7846_PENDOWN_GPIO, GPIO_ACTIVE_LOW),
143 	{ }
144 };
145 
146 static const struct software_node nokia770_ads7846_swnode = {
147 	.name = "ads7846",
148 	.properties = nokia770_ads7846_props,
149 };
150 
151 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
152 	[0] = {
153 		.modalias       = "lcd_mipid",
154 		.bus_num        = 2,
155 		.chip_select    = 3,
156 		.max_speed_hz   = 12000000,
157 		.platform_data	= &nokia770_mipid_platform_data,
158 		.swnode         = &nokia770_mipid_swnode,
159 	},
160 	[1] = {
161 		.modalias       = "ads7846",
162 		.bus_num        = 2,
163 		.chip_select    = 0,
164 		.max_speed_hz   = 2500000,
165 		.swnode         = &nokia770_ads7846_swnode,
166 	},
167 };
168 
169 static void __init hwa742_dev_init(void)
170 {
171 	clk_add_alias("hwa_sys_ck", NULL, "bclk", NULL);
172 }
173 
174 /* assume no Mini-AB port */
175 
176 static struct omap_usb_config nokia770_usb_config __initdata = {
177 	.otg		= 1,
178 	.register_host	= 1,
179 	.register_dev	= 1,
180 	.hmc_mode	= 16,
181 	.pins[0]	= 6,
182 	.extcon		= "tahvo-usb",
183 };
184 
185 #if IS_ENABLED(CONFIG_MMC_OMAP)
186 
187 static struct gpiod_lookup_table nokia770_mmc_gpio_table = {
188 	.dev_id = "mmci-omap.1",
189 	.table = {
190 		/* Slot index 0, VSD power, GPIO 41 */
191 		GPIO_LOOKUP_IDX("gpio-32-47", 9,
192 				"vsd", 0, GPIO_ACTIVE_HIGH),
193 		/* Slot index 0, switch, GPIO 23 */
194 		GPIO_LOOKUP_IDX("gpio-16-31", 7,
195 				"cover", 0, GPIO_ACTIVE_HIGH),
196 		{ }
197 	},
198 };
199 
200 static struct omap_mmc_platform_data nokia770_mmc2_data = {
201 	.nr_slots                       = 1,
202 	.max_freq                       = 12000000,
203 	.slots[0]       = {
204 		.ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
205 		.name                   = "mmcblk",
206 	},
207 };
208 
209 static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];
210 
211 static void __init nokia770_mmc_init(void)
212 {
213 	gpiod_add_lookup_table(&nokia770_mmc_gpio_table);
214 	/* Only the second MMC controller is used */
215 	nokia770_mmc_data[1] = &nokia770_mmc2_data;
216 	omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
217 }
218 
219 #else
220 static inline void nokia770_mmc_init(void)
221 {
222 }
223 #endif
224 
225 #if IS_ENABLED(CONFIG_I2C_CBUS_GPIO)
226 
227 static const struct software_node_ref_args nokia770_cbus_gpio_refs[] = {
228 	SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 9, 0),
229 	SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 10, 0),
230 	SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 11, 0),
231 };
232 
233 static const struct property_entry nokia770_cbus_props[] = {
234 	PROPERTY_ENTRY_REF_ARRAY("gpios", nokia770_cbus_gpio_refs),
235 	{ }
236 };
237 
238 static struct platform_device nokia770_cbus_device = {
239 	.name   = "i2c-cbus-gpio",
240 	.id     = 2,
241 };
242 
243 static struct i2c_board_info nokia770_i2c_board_info_2[] __initdata = {
244 	{
245 		I2C_BOARD_INFO("retu", 0x01),
246 	},
247 	{
248 		I2C_BOARD_INFO("tahvo", 0x02),
249 	},
250 };
251 
252 static void __init nokia770_cbus_init(void)
253 {
254 	struct gpio_desc *d;
255 	int irq;
256 
257 	d = gpiod_get(NULL, "retu_irq", GPIOD_IN);
258 	if (IS_ERR(d)) {
259 		pr_err("Unable to get CBUS Retu IRQ GPIO descriptor\n");
260 	} else {
261 		irq = gpiod_to_irq(d);
262 		irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
263 		nokia770_i2c_board_info_2[0].irq = irq;
264 	}
265 	d = gpiod_get(NULL, "tahvo_irq", GPIOD_IN);
266 	if (IS_ERR(d)) {
267 		pr_err("Unable to get CBUS Tahvo IRQ GPIO descriptor\n");
268 	} else {
269 		irq = gpiod_to_irq(d);
270 		irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
271 		nokia770_i2c_board_info_2[1].irq = irq;
272 	}
273 	i2c_register_board_info(2, nokia770_i2c_board_info_2,
274 				ARRAY_SIZE(nokia770_i2c_board_info_2));
275 	device_create_managed_software_node(&nokia770_cbus_device.dev,
276 					    nokia770_cbus_props, NULL);
277 	platform_device_register(&nokia770_cbus_device);
278 }
279 #else /* CONFIG_I2C_CBUS_GPIO */
280 static void __init nokia770_cbus_init(void)
281 {
282 }
283 #endif /* CONFIG_I2C_CBUS_GPIO */
284 
285 static struct gpiod_lookup_table nokia770_irq_gpio_table = {
286 	.dev_id = NULL,
287 	.table = {
288 		/* GPIO used by SPI device 1 */
289 		GPIO_LOOKUP("gpio-0-15", 15, "ads7846_irq",
290 			    GPIO_ACTIVE_HIGH),
291 		/* GPIO used for retu IRQ */
292 		GPIO_LOOKUP("gpio-48-63", 15, "retu_irq",
293 			    GPIO_ACTIVE_HIGH),
294 		/* GPIO used for tahvo IRQ */
295 		GPIO_LOOKUP("gpio-32-47", 8, "tahvo_irq",
296 			    GPIO_ACTIVE_HIGH),
297 		/* GPIOs used by serial wakeup IRQs */
298 		GPIO_LOOKUP_IDX("gpio-32-47", 5, "wakeup", 0,
299 			    GPIO_ACTIVE_HIGH),
300 		GPIO_LOOKUP_IDX("gpio-16-31", 2, "wakeup", 1,
301 			    GPIO_ACTIVE_HIGH),
302 		GPIO_LOOKUP_IDX("gpio-48-63", 1, "wakeup", 2,
303 			    GPIO_ACTIVE_HIGH),
304 		{ }
305 	},
306 };
307 
308 static void __init omap_nokia770_init(void)
309 {
310 	struct gpio_desc *d;
311 
312 	/* On Nokia 770, the SleepX signal is masked with an
313 	 * MPUIO line by default.  It has to be unmasked for it
314 	 * to become functional */
315 
316 	/* SleepX mask direction */
317 	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
318 	/* Unmask SleepX signal */
319 	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
320 
321 	software_node_register_node_group(nokia770_gpiochip_nodes);
322 	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
323 
324 	gpiod_add_lookup_table(&nokia770_irq_gpio_table);
325 	d = gpiod_get(NULL, "ads7846_irq", GPIOD_IN);
326 	if (IS_ERR(d))
327 		pr_err("Unable to get ADS7846 IRQ GPIO descriptor\n");
328 	else
329 		nokia770_spi_board_info[1].irq = gpiod_to_irq(d);
330 
331 	spi_register_board_info(nokia770_spi_board_info,
332 				ARRAY_SIZE(nokia770_spi_board_info));
333 	omap_serial_init();
334 	omap_register_i2c_bus(1, 100, NULL, 0);
335 	hwa742_dev_init();
336 	mipid_dev_init();
337 	omap1_usb_init(&nokia770_usb_config);
338 	nokia770_mmc_init();
339 	nokia770_cbus_init();
340 }
341 
342 MACHINE_START(NOKIA770, "Nokia 770")
343 	.atag_offset	= 0x100,
344 	.map_io		= omap1_map_io,
345 	.init_early     = omap1_init_early,
346 	.init_irq	= omap1_init_irq,
347 	.init_machine	= omap_nokia770_init,
348 	.init_late	= omap1_init_late,
349 	.init_time	= omap1_timer_init,
350 	.restart	= omap1_restart,
351 MACHINE_END
352