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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
86e5e38c | 2 | /* |
6e23fcb3 | 3 | * Support for Compaq iPAQ H3100 and H3600 handheld computers (common code) |
86e5e38c | 4 | * |
6e23fcb3 DA |
5 | * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks) |
6 | * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru> | |
86e5e38c | 7 | */ |
6e23fcb3 | 8 | |
86e5e38c | 9 | #include <linux/kernel.h> |
a00315d1 | 10 | #include <linux/gpio/machine.h> |
4aa97555 | 11 | #include <linux/gpio.h> |
c463eb62 DA |
12 | #include <linux/gpio_keys.h> |
13 | #include <linux/input.h> | |
86e5e38c DA |
14 | #include <linux/mtd/mtd.h> |
15 | #include <linux/mtd/partitions.h> | |
3c6e8d05 | 16 | #include <linux/platform_data/gpio-htc-egpio.h> |
6920b5a7 | 17 | #include <linux/platform_data/sa11x0-serial.h> |
86e5e38c | 18 | #include <linux/platform_device.h> |
4aa97555 | 19 | #include <linux/serial_core.h> |
86e5e38c | 20 | |
86e5e38c | 21 | #include <asm/mach/flash.h> |
86e5e38c | 22 | #include <asm/mach/map.h> |
86e5e38c DA |
23 | |
24 | #include <mach/h3xxx.h> | |
abf38780 | 25 | #include <mach/irqs.h> |
86e5e38c DA |
26 | |
27 | #include "generic.h" | |
28 | ||
86e5e38c DA |
29 | /* |
30 | * H3xxx flash support | |
31 | */ | |
32 | static struct mtd_partition h3xxx_partitions[] = { | |
33 | { | |
34 | .name = "H3XXX boot firmware", | |
35 | .size = 0x00040000, | |
36 | .offset = 0, | |
37 | .mask_flags = MTD_WRITEABLE, /* force read-only */ | |
38 | }, { | |
39 | .name = "H3XXX rootfs", | |
40 | .size = MTDPART_SIZ_FULL, | |
41 | .offset = 0x00040000, | |
42 | } | |
43 | }; | |
44 | ||
45 | static void h3xxx_set_vpp(int vpp) | |
46 | { | |
47 | gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp); | |
48 | } | |
49 | ||
50 | static int h3xxx_flash_init(void) | |
51 | { | |
52 | int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp"); | |
729fae44 DA |
53 | if (err) { |
54 | pr_err("%s: can't request H3XXX_EGPIO_VPP_ON\n", __func__); | |
86e5e38c | 55 | return err; |
729fae44 | 56 | } |
86e5e38c DA |
57 | |
58 | err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0); | |
59 | if (err) | |
60 | gpio_free(H3XXX_EGPIO_VPP_ON); | |
61 | ||
62 | return err; | |
63 | } | |
64 | ||
65 | static void h3xxx_flash_exit(void) | |
66 | { | |
67 | gpio_free(H3XXX_EGPIO_VPP_ON); | |
68 | } | |
69 | ||
70 | static struct flash_platform_data h3xxx_flash_data = { | |
71 | .map_name = "cfi_probe", | |
72 | .set_vpp = h3xxx_set_vpp, | |
73 | .init = h3xxx_flash_init, | |
74 | .exit = h3xxx_flash_exit, | |
75 | .parts = h3xxx_partitions, | |
76 | .nr_parts = ARRAY_SIZE(h3xxx_partitions), | |
77 | }; | |
78 | ||
a181099e RK |
79 | static struct resource h3xxx_flash_resource = |
80 | DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M); | |
86e5e38c DA |
81 | |
82 | ||
83 | /* | |
84 | * H3xxx uart support | |
85 | */ | |
86e5e38c DA |
86 | static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate) |
87 | { | |
729fae44 | 88 | if (port->mapbase == _Ser3UTCR0) { |
86e5e38c DA |
89 | if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) { |
90 | gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state); | |
91 | gpio_free(H3XXX_EGPIO_RS232_ON); | |
729fae44 DA |
92 | } else { |
93 | pr_err("%s: can't request H3XXX_EGPIO_RS232_ON\n", | |
94 | __func__); | |
86e5e38c | 95 | } |
729fae44 | 96 | } |
86e5e38c DA |
97 | } |
98 | ||
99 | /* | |
100 | * Enable/Disable wake up events for this serial port. | |
101 | * Obviously, we only support this on the normal COM port. | |
102 | */ | |
103 | static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable) | |
104 | { | |
105 | int err = -EINVAL; | |
106 | ||
107 | if (port->mapbase == _Ser3UTCR0) { | |
108 | if (enable) | |
109 | PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */ | |
110 | else | |
111 | PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */ | |
112 | err = 0; | |
113 | } | |
114 | return err; | |
115 | } | |
116 | ||
117 | static struct sa1100_port_fns h3xxx_port_fns __initdata = { | |
86e5e38c DA |
118 | .pm = h3xxx_uart_pm, |
119 | .set_wake = h3xxx_uart_set_wake, | |
120 | }; | |
121 | ||
3fae166e RK |
122 | static struct gpiod_lookup_table h3xxx_uart3_gpio_table = { |
123 | .dev_id = "sa11x0-uart.3", | |
124 | .table = { | |
125 | GPIO_LOOKUP("gpio", H3XXX_GPIO_COM_DCD, "dcd", GPIO_ACTIVE_LOW), | |
126 | GPIO_LOOKUP("gpio", H3XXX_GPIO_COM_CTS, "cts", GPIO_ACTIVE_LOW), | |
127 | GPIO_LOOKUP("gpio", H3XXX_GPIO_COM_RTS, "rts", GPIO_ACTIVE_LOW), | |
128 | { }, | |
129 | }, | |
130 | }; | |
131 | ||
86e5e38c DA |
132 | /* |
133 | * EGPIO | |
134 | */ | |
135 | ||
136 | static struct resource egpio_resources[] = { | |
a181099e | 137 | [0] = DEFINE_RES_MEM(H3600_EGPIO_PHYS, 0x4), |
86e5e38c DA |
138 | }; |
139 | ||
140 | static struct htc_egpio_chip egpio_chips[] = { | |
141 | [0] = { | |
142 | .reg_start = 0, | |
143 | .gpio_base = H3XXX_EGPIO_BASE, | |
144 | .num_gpios = 16, | |
145 | .direction = HTC_EGPIO_OUTPUT, | |
146 | .initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */ | |
147 | }, | |
148 | }; | |
149 | ||
150 | static struct htc_egpio_platform_data egpio_info = { | |
151 | .reg_width = 16, | |
152 | .bus_width = 16, | |
153 | .chip = egpio_chips, | |
154 | .num_chips = ARRAY_SIZE(egpio_chips), | |
155 | }; | |
156 | ||
157 | static struct platform_device h3xxx_egpio = { | |
158 | .name = "htc-egpio", | |
159 | .id = -1, | |
160 | .resource = egpio_resources, | |
161 | .num_resources = ARRAY_SIZE(egpio_resources), | |
162 | .dev = { | |
163 | .platform_data = &egpio_info, | |
164 | }, | |
165 | }; | |
166 | ||
c463eb62 DA |
167 | /* |
168 | * GPIO keys | |
169 | */ | |
170 | ||
171 | static struct gpio_keys_button h3xxx_button_table[] = { | |
172 | { | |
173 | .code = KEY_POWER, | |
174 | .gpio = H3XXX_GPIO_PWR_BUTTON, | |
175 | .desc = "Power Button", | |
176 | .active_low = 1, | |
177 | .type = EV_KEY, | |
178 | .wakeup = 1, | |
179 | }, { | |
180 | .code = KEY_ENTER, | |
181 | .gpio = H3XXX_GPIO_ACTION_BUTTON, | |
182 | .active_low = 1, | |
183 | .desc = "Action button", | |
184 | .type = EV_KEY, | |
185 | .wakeup = 0, | |
186 | }, | |
187 | }; | |
188 | ||
189 | static struct gpio_keys_platform_data h3xxx_keys_data = { | |
190 | .buttons = h3xxx_button_table, | |
191 | .nbuttons = ARRAY_SIZE(h3xxx_button_table), | |
192 | }; | |
193 | ||
194 | static struct platform_device h3xxx_keys = { | |
195 | .name = "gpio-keys", | |
196 | .id = -1, | |
197 | .dev = { | |
198 | .platform_data = &h3xxx_keys_data, | |
199 | }, | |
200 | }; | |
201 | ||
abf38780 LW |
202 | static struct resource h3xxx_micro_resources[] = { |
203 | DEFINE_RES_MEM(0x80010000, SZ_4K), | |
204 | DEFINE_RES_MEM(0x80020000, SZ_4K), | |
205 | DEFINE_RES_IRQ(IRQ_Ser1UART), | |
206 | }; | |
207 | ||
208 | struct platform_device h3xxx_micro_asic = { | |
209 | .name = "ipaq-h3xxx-micro", | |
210 | .id = -1, | |
211 | .resource = h3xxx_micro_resources, | |
212 | .num_resources = ARRAY_SIZE(h3xxx_micro_resources), | |
213 | }; | |
214 | ||
86e5e38c DA |
215 | static struct platform_device *h3xxx_devices[] = { |
216 | &h3xxx_egpio, | |
c463eb62 | 217 | &h3xxx_keys, |
abf38780 | 218 | &h3xxx_micro_asic, |
86e5e38c DA |
219 | }; |
220 | ||
a00315d1 RK |
221 | static struct gpiod_lookup_table h3xxx_pcmcia_gpio_table = { |
222 | .dev_id = "sa11x0-pcmcia", | |
223 | .table = { | |
224 | GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_CD0, | |
225 | "pcmcia0-detect", GPIO_ACTIVE_LOW), | |
226 | GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_IRQ0, | |
227 | "pcmcia0-ready", GPIO_ACTIVE_HIGH), | |
228 | GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_CD1, | |
229 | "pcmcia1-detect", GPIO_ACTIVE_LOW), | |
230 | GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_IRQ1, | |
231 | "pcmcia1-ready", GPIO_ACTIVE_HIGH), | |
232 | { }, | |
233 | }, | |
234 | }; | |
235 | ||
86e5e38c DA |
236 | void __init h3xxx_mach_init(void) |
237 | { | |
a00315d1 | 238 | gpiod_add_lookup_table(&h3xxx_pcmcia_gpio_table); |
3fae166e | 239 | gpiod_add_lookup_table(&h3xxx_uart3_gpio_table); |
86e5e38c DA |
240 | sa1100_register_uart_fns(&h3xxx_port_fns); |
241 | sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1); | |
242 | platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices)); | |
243 | } | |
244 | ||
245 | static struct map_desc h3600_io_desc[] __initdata = { | |
246 | { /* static memory bank 2 CS#2 */ | |
247 | .virtual = H3600_BANK_2_VIRT, | |
248 | .pfn = __phys_to_pfn(SA1100_CS2_PHYS), | |
249 | .length = 0x02800000, | |
250 | .type = MT_DEVICE | |
251 | }, { /* static memory bank 4 CS#4 */ | |
252 | .virtual = H3600_BANK_4_VIRT, | |
253 | .pfn = __phys_to_pfn(SA1100_CS4_PHYS), | |
254 | .length = 0x00800000, | |
255 | .type = MT_DEVICE | |
256 | }, { /* EGPIO 0 CS#5 */ | |
257 | .virtual = H3600_EGPIO_VIRT, | |
258 | .pfn = __phys_to_pfn(H3600_EGPIO_PHYS), | |
259 | .length = 0x01000000, | |
260 | .type = MT_DEVICE | |
261 | } | |
262 | }; | |
263 | ||
264 | /* | |
265 | * Common map_io initialization | |
266 | */ | |
267 | ||
268 | void __init h3xxx_map_io(void) | |
269 | { | |
270 | sa1100_map_io(); | |
271 | iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc)); | |
272 | ||
273 | sa1100_register_uart(0, 3); /* Common serial port */ | |
274 | // sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */ | |
275 | ||
276 | /* Ensure those pins are outputs and driving low */ | |
277 | PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM; | |
278 | PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); | |
279 | ||
280 | /* Configure suspend conditions */ | |
281 | PGSR = 0; | |
86e5e38c DA |
282 | PCFR = PCFR_OPDE; |
283 | PSDR = 0; | |
284 | ||
285 | GPCR = 0x0fffffff; /* All outputs are set low by default */ | |
286 | GPDR = 0; /* Configure all GPIOs as input */ | |
287 | } | |
288 |