1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * linux/arch/arm/mach-omap1/board-palmte.c
4  *
5  * Modified from board-generic.c
6  *
7  * Support for the Palm Tungsten E PDA.
8  *
9  * Original version : Laurent Gonzalez
10  *
11  * Maintainers : http://palmtelinux.sf.net
12  *                palmtelinux-developpers@lists.sf.net
13  *
14  * Copyright (c) 2006 Andrzej Zaborowski  <balrog@zabor.org>
15  */
16 #include <linux/gpio/machine.h>
17 #include <linux/gpio/consumer.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/input.h>
21 #include <linux/platform_device.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/partitions.h>
24 #include <linux/mtd/physmap.h>
25 #include <linux/spi/spi.h>
26 #include <linux/interrupt.h>
27 #include <linux/apm-emulation.h>
28 #include <linux/omapfb.h>
29 #include <linux/omap-dma.h>
30 #include <linux/platform_data/keypad-omap.h>
31 #include <linux/platform_data/omap1_bl.h>
32 
33 #include <asm/mach-types.h>
34 #include <asm/mach/arch.h>
35 #include <asm/mach/map.h>
36 
37 #include "tc.h"
38 #include "flash.h"
39 #include "mux.h"
40 #include "hardware.h"
41 #include "usb.h"
42 #include "mmc.h"
43 #include "common.h"
44 
45 #define PALMTE_USBDETECT_GPIO	0
46 #define PALMTE_USB_OR_DC_GPIO	1
47 #define PALMTE_TSC_GPIO		4
48 #define PALMTE_PINTDAV_GPIO	6
49 #define PALMTE_MMC_WP_GPIO	8
50 #define PALMTE_MMC_POWER_GPIO	9
51 #define PALMTE_HDQ_GPIO		11
52 #define PALMTE_HEADPHONES_GPIO	14
53 #define PALMTE_SPEAKER_GPIO	15
54 #define PALMTE_DC_GPIO		OMAP_MPUIO(2)
55 #define PALMTE_MMC_SWITCH_GPIO	OMAP_MPUIO(4)
56 #define PALMTE_MMC1_GPIO	OMAP_MPUIO(6)
57 #define PALMTE_MMC2_GPIO	OMAP_MPUIO(7)
58 #define PALMTE_MMC3_GPIO	OMAP_MPUIO(11)
59 
60 static const unsigned int palmte_keymap[] = {
61 	KEY(0, 0, KEY_F1),		/* Calendar */
62 	KEY(1, 0, KEY_F2),		/* Contacts */
63 	KEY(2, 0, KEY_F3),		/* Tasks List */
64 	KEY(3, 0, KEY_F4),		/* Note Pad */
65 	KEY(4, 0, KEY_POWER),
66 	KEY(0, 1, KEY_LEFT),
67 	KEY(1, 1, KEY_DOWN),
68 	KEY(2, 1, KEY_UP),
69 	KEY(3, 1, KEY_RIGHT),
70 	KEY(4, 1, KEY_ENTER),
71 };
72 
73 static const struct matrix_keymap_data palmte_keymap_data = {
74 	.keymap		= palmte_keymap,
75 	.keymap_size	= ARRAY_SIZE(palmte_keymap),
76 };
77 
78 static struct omap_kp_platform_data palmte_kp_data = {
79 	.rows	= 8,
80 	.cols	= 8,
81 	.keymap_data = &palmte_keymap_data,
82 	.rep	= true,
83 	.delay	= 12,
84 };
85 
86 static struct resource palmte_kp_resources[] = {
87 	[0]	= {
88 		.start	= INT_KEYBOARD,
89 		.end	= INT_KEYBOARD,
90 		.flags	= IORESOURCE_IRQ,
91 	},
92 };
93 
94 static struct platform_device palmte_kp_device = {
95 	.name		= "omap-keypad",
96 	.id		= -1,
97 	.dev		= {
98 		.platform_data	= &palmte_kp_data,
99 	},
100 	.num_resources	= ARRAY_SIZE(palmte_kp_resources),
101 	.resource	= palmte_kp_resources,
102 };
103 
104 static struct mtd_partition palmte_rom_partitions[] = {
105 	/* PalmOS "Small ROM", contains the bootloader and the debugger */
106 	{
107 		.name		= "smallrom",
108 		.offset		= 0,
109 		.size		= 0xa000,
110 		.mask_flags	= MTD_WRITEABLE,
111 	},
112 	/* PalmOS "Big ROM", a filesystem with all the OS code and data */
113 	{
114 		.name		= "bigrom",
115 		.offset		= SZ_128K,
116 		/*
117 		 * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
118 		 * 0x7b0000 bytes in the English-only ("enUS") version.
119 		 */
120 		.size		= 0x7b0000,
121 		.mask_flags	= MTD_WRITEABLE,
122 	},
123 };
124 
125 static struct physmap_flash_data palmte_rom_data = {
126 	.width		= 2,
127 	.set_vpp	= omap1_set_vpp,
128 	.parts		= palmte_rom_partitions,
129 	.nr_parts	= ARRAY_SIZE(palmte_rom_partitions),
130 };
131 
132 static struct resource palmte_rom_resource = {
133 	.start		= OMAP_CS0_PHYS,
134 	.end		= OMAP_CS0_PHYS + SZ_8M - 1,
135 	.flags		= IORESOURCE_MEM,
136 };
137 
138 static struct platform_device palmte_rom_device = {
139 	.name		= "physmap-flash",
140 	.id		= -1,
141 	.dev		= {
142 		.platform_data	= &palmte_rom_data,
143 	},
144 	.num_resources	= 1,
145 	.resource	= &palmte_rom_resource,
146 };
147 
148 static struct platform_device palmte_lcd_device = {
149 	.name		= "lcd_palmte",
150 	.id		= -1,
151 };
152 
153 static struct omap_backlight_config palmte_backlight_config = {
154 	.default_intensity	= 0xa0,
155 };
156 
157 static struct platform_device palmte_backlight_device = {
158 	.name		= "omap-bl",
159 	.id		= -1,
160 	.dev		= {
161 		.platform_data	= &palmte_backlight_config,
162 	},
163 };
164 
165 static struct platform_device *palmte_devices[] __initdata = {
166 	&palmte_rom_device,
167 	&palmte_kp_device,
168 	&palmte_lcd_device,
169 	&palmte_backlight_device,
170 };
171 
172 static struct omap_usb_config palmte_usb_config __initdata = {
173 	.register_dev	= 1,	/* Mini-B only receptacle */
174 	.hmc_mode	= 0,
175 	.pins[0]	= 2,
176 };
177 
178 static const struct omap_lcd_config palmte_lcd_config __initconst = {
179 	.ctrl_name	= "internal",
180 };
181 
182 static struct spi_board_info palmte_spi_info[] __initdata = {
183 	{
184 		.modalias	= "tsc2102",
185 		.bus_num	= 2,	/* uWire (officially) */
186 		.chip_select	= 0,	/* As opposed to 3 */
187 		.max_speed_hz	= 8000000,
188 	},
189 };
190 
191 #if IS_ENABLED(CONFIG_MMC_OMAP)
192 
193 static struct omap_mmc_platform_data _palmte_mmc_config = {
194 	.nr_slots			= 1,
195 	.slots[0]			= {
196 		.ocr_mask		= MMC_VDD_32_33|MMC_VDD_33_34,
197 		.name			= "mmcblk",
198 	},
199 };
200 
201 static struct omap_mmc_platform_data *palmte_mmc_config[OMAP15XX_NR_MMC] = {
202 	[0] = &_palmte_mmc_config,
203 };
204 
205 static void palmte_mmc_init(void)
206 {
207 	omap1_init_mmc(palmte_mmc_config, OMAP15XX_NR_MMC);
208 }
209 
210 #else /* CONFIG_MMC_OMAP */
211 
212 static void palmte_mmc_init(void)
213 {
214 }
215 
216 #endif /* CONFIG_MMC_OMAP */
217 
218 static struct gpiod_lookup_table palmte_irq_gpio_table = {
219 	.dev_id = NULL,
220 	.table = {
221 		/* GPIO used for TSC2102 PINTDAV IRQ */
222 		GPIO_LOOKUP("gpio-0-15", PALMTE_PINTDAV_GPIO, "tsc2102_irq",
223 			    GPIO_ACTIVE_HIGH),
224 		/* GPIO used for USB or DC input detection */
225 		GPIO_LOOKUP("gpio-0-15", PALMTE_USB_OR_DC_GPIO, "usb_dc_irq",
226 			    GPIO_ACTIVE_HIGH),
227 		{ }
228 	},
229 };
230 
231 static void __init omap_palmte_init(void)
232 {
233 	struct gpio_desc *d;
234 
235 	/* mux pins for uarts */
236 	omap_cfg_reg(UART1_TX);
237 	omap_cfg_reg(UART1_RTS);
238 	omap_cfg_reg(UART2_TX);
239 	omap_cfg_reg(UART2_RTS);
240 	omap_cfg_reg(UART3_TX);
241 	omap_cfg_reg(UART3_RX);
242 
243 	platform_add_devices(palmte_devices, ARRAY_SIZE(palmte_devices));
244 
245 	gpiod_add_lookup_table(&palmte_irq_gpio_table);
246 	d = gpiod_get(NULL, "tsc2102_irq", GPIOD_IN);
247 	if (IS_ERR(d))
248 		pr_err("Unable to get TSC2102 IRQ GPIO descriptor\n");
249 	else
250 		palmte_spi_info[0].irq = gpiod_to_irq(d);
251 	spi_register_board_info(palmte_spi_info, ARRAY_SIZE(palmte_spi_info));
252 
253 	/* We are getting this just to set it up as input */
254 	d = gpiod_get(NULL, "usb_dc_irq", GPIOD_IN);
255 	if (IS_ERR(d))
256 		pr_err("Unable to get USB/DC IRQ GPIO descriptor\n");
257 	else
258 		gpiod_put(d);
259 
260 	omap_serial_init();
261 	omap1_usb_init(&palmte_usb_config);
262 	omap_register_i2c_bus(1, 100, NULL, 0);
263 
264 	omapfb_set_lcd_config(&palmte_lcd_config);
265 	palmte_mmc_init();
266 }
267 
268 MACHINE_START(OMAP_PALMTE, "OMAP310 based Palm Tungsten E")
269 	.atag_offset	= 0x100,
270 	.map_io		= omap1_map_io,
271 	.init_early     = omap1_init_early,
272 	.init_irq	= omap1_init_irq,
273 	.init_machine	= omap_palmte_init,
274 	.init_late	= omap1_init_late,
275 	.init_time	= omap1_timer_init,
276 	.restart	= omap1_restart,
277 MACHINE_END
278