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86e5e38c | 1 | /* |
6e23fcb3 | 2 | * Support for Compaq iPAQ H3100 and H3600 handheld computers (common code) |
86e5e38c | 3 | * |
6e23fcb3 DA |
4 | * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks) |
5 | * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru> | |
86e5e38c | 6 | * |
6e23fcb3 DA |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
86e5e38c DA |
10 | * |
11 | */ | |
6e23fcb3 | 12 | |
86e5e38c | 13 | #include <linux/kernel.h> |
4aa97555 | 14 | #include <linux/gpio.h> |
c463eb62 DA |
15 | #include <linux/gpio_keys.h> |
16 | #include <linux/input.h> | |
86e5e38c DA |
17 | #include <linux/mfd/htc-egpio.h> |
18 | #include <linux/mtd/mtd.h> | |
19 | #include <linux/mtd/partitions.h> | |
6920b5a7 | 20 | #include <linux/platform_data/sa11x0-serial.h> |
86e5e38c | 21 | #include <linux/platform_device.h> |
4aa97555 | 22 | #include <linux/serial_core.h> |
86e5e38c | 23 | |
86e5e38c | 24 | #include <asm/mach/flash.h> |
86e5e38c | 25 | #include <asm/mach/map.h> |
86e5e38c DA |
26 | |
27 | #include <mach/h3xxx.h> | |
28 | ||
29 | #include "generic.h" | |
30 | ||
31 | void h3xxx_init_gpio(struct gpio_default_state *s, size_t n) | |
32 | { | |
33 | while (n--) { | |
34 | const char *name = s->name; | |
35 | int err; | |
36 | ||
37 | if (!name) | |
38 | name = "[init]"; | |
39 | err = gpio_request(s->gpio, name); | |
40 | if (err) { | |
41 | printk(KERN_ERR "gpio%u: unable to request: %d\n", | |
42 | s->gpio, err); | |
43 | continue; | |
44 | } | |
45 | if (s->mode >= 0) { | |
46 | err = gpio_direction_output(s->gpio, s->mode); | |
47 | } else { | |
48 | err = gpio_direction_input(s->gpio); | |
49 | } | |
50 | if (err) { | |
51 | printk(KERN_ERR "gpio%u: unable to set direction: %d\n", | |
52 | s->gpio, err); | |
53 | continue; | |
54 | } | |
55 | if (!s->name) | |
56 | gpio_free(s->gpio); | |
57 | s++; | |
58 | } | |
59 | } | |
60 | ||
61 | ||
62 | /* | |
63 | * H3xxx flash support | |
64 | */ | |
65 | static struct mtd_partition h3xxx_partitions[] = { | |
66 | { | |
67 | .name = "H3XXX boot firmware", | |
68 | .size = 0x00040000, | |
69 | .offset = 0, | |
70 | .mask_flags = MTD_WRITEABLE, /* force read-only */ | |
71 | }, { | |
72 | .name = "H3XXX rootfs", | |
73 | .size = MTDPART_SIZ_FULL, | |
74 | .offset = 0x00040000, | |
75 | } | |
76 | }; | |
77 | ||
78 | static void h3xxx_set_vpp(int vpp) | |
79 | { | |
80 | gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp); | |
81 | } | |
82 | ||
83 | static int h3xxx_flash_init(void) | |
84 | { | |
85 | int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp"); | |
729fae44 DA |
86 | if (err) { |
87 | pr_err("%s: can't request H3XXX_EGPIO_VPP_ON\n", __func__); | |
86e5e38c | 88 | return err; |
729fae44 | 89 | } |
86e5e38c DA |
90 | |
91 | err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0); | |
92 | if (err) | |
93 | gpio_free(H3XXX_EGPIO_VPP_ON); | |
94 | ||
95 | return err; | |
96 | } | |
97 | ||
98 | static void h3xxx_flash_exit(void) | |
99 | { | |
100 | gpio_free(H3XXX_EGPIO_VPP_ON); | |
101 | } | |
102 | ||
103 | static struct flash_platform_data h3xxx_flash_data = { | |
104 | .map_name = "cfi_probe", | |
105 | .set_vpp = h3xxx_set_vpp, | |
106 | .init = h3xxx_flash_init, | |
107 | .exit = h3xxx_flash_exit, | |
108 | .parts = h3xxx_partitions, | |
109 | .nr_parts = ARRAY_SIZE(h3xxx_partitions), | |
110 | }; | |
111 | ||
a181099e RK |
112 | static struct resource h3xxx_flash_resource = |
113 | DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M); | |
86e5e38c DA |
114 | |
115 | ||
116 | /* | |
117 | * H3xxx uart support | |
118 | */ | |
119 | static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl) | |
120 | { | |
121 | if (port->mapbase == _Ser3UTCR0) { | |
122 | gpio_set_value(H3XXX_GPIO_COM_RTS, !(mctrl & TIOCM_RTS)); | |
123 | } | |
124 | } | |
125 | ||
126 | static u_int h3xxx_uart_get_mctrl(struct uart_port *port) | |
127 | { | |
128 | u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR; | |
129 | ||
130 | if (port->mapbase == _Ser3UTCR0) { | |
131 | /* | |
132 | * DCD and CTS bits are inverted in GPLR by RS232 transceiver | |
133 | */ | |
134 | if (gpio_get_value(H3XXX_GPIO_COM_DCD)) | |
135 | ret &= ~TIOCM_CD; | |
136 | if (gpio_get_value(H3XXX_GPIO_COM_CTS)) | |
137 | ret &= ~TIOCM_CTS; | |
138 | } | |
139 | ||
140 | return ret; | |
141 | } | |
142 | ||
143 | static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate) | |
144 | { | |
729fae44 | 145 | if (port->mapbase == _Ser3UTCR0) { |
86e5e38c DA |
146 | if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) { |
147 | gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state); | |
148 | gpio_free(H3XXX_EGPIO_RS232_ON); | |
729fae44 DA |
149 | } else { |
150 | pr_err("%s: can't request H3XXX_EGPIO_RS232_ON\n", | |
151 | __func__); | |
86e5e38c | 152 | } |
729fae44 | 153 | } |
86e5e38c DA |
154 | } |
155 | ||
156 | /* | |
157 | * Enable/Disable wake up events for this serial port. | |
158 | * Obviously, we only support this on the normal COM port. | |
159 | */ | |
160 | static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable) | |
161 | { | |
162 | int err = -EINVAL; | |
163 | ||
164 | if (port->mapbase == _Ser3UTCR0) { | |
165 | if (enable) | |
166 | PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */ | |
167 | else | |
168 | PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */ | |
169 | err = 0; | |
170 | } | |
171 | return err; | |
172 | } | |
173 | ||
174 | static struct sa1100_port_fns h3xxx_port_fns __initdata = { | |
175 | .set_mctrl = h3xxx_uart_set_mctrl, | |
176 | .get_mctrl = h3xxx_uart_get_mctrl, | |
177 | .pm = h3xxx_uart_pm, | |
178 | .set_wake = h3xxx_uart_set_wake, | |
179 | }; | |
180 | ||
181 | /* | |
182 | * EGPIO | |
183 | */ | |
184 | ||
185 | static struct resource egpio_resources[] = { | |
a181099e | 186 | [0] = DEFINE_RES_MEM(H3600_EGPIO_PHYS, 0x4), |
86e5e38c DA |
187 | }; |
188 | ||
189 | static struct htc_egpio_chip egpio_chips[] = { | |
190 | [0] = { | |
191 | .reg_start = 0, | |
192 | .gpio_base = H3XXX_EGPIO_BASE, | |
193 | .num_gpios = 16, | |
194 | .direction = HTC_EGPIO_OUTPUT, | |
195 | .initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */ | |
196 | }, | |
197 | }; | |
198 | ||
199 | static struct htc_egpio_platform_data egpio_info = { | |
200 | .reg_width = 16, | |
201 | .bus_width = 16, | |
202 | .chip = egpio_chips, | |
203 | .num_chips = ARRAY_SIZE(egpio_chips), | |
204 | }; | |
205 | ||
206 | static struct platform_device h3xxx_egpio = { | |
207 | .name = "htc-egpio", | |
208 | .id = -1, | |
209 | .resource = egpio_resources, | |
210 | .num_resources = ARRAY_SIZE(egpio_resources), | |
211 | .dev = { | |
212 | .platform_data = &egpio_info, | |
213 | }, | |
214 | }; | |
215 | ||
c463eb62 DA |
216 | /* |
217 | * GPIO keys | |
218 | */ | |
219 | ||
220 | static struct gpio_keys_button h3xxx_button_table[] = { | |
221 | { | |
222 | .code = KEY_POWER, | |
223 | .gpio = H3XXX_GPIO_PWR_BUTTON, | |
224 | .desc = "Power Button", | |
225 | .active_low = 1, | |
226 | .type = EV_KEY, | |
227 | .wakeup = 1, | |
228 | }, { | |
229 | .code = KEY_ENTER, | |
230 | .gpio = H3XXX_GPIO_ACTION_BUTTON, | |
231 | .active_low = 1, | |
232 | .desc = "Action button", | |
233 | .type = EV_KEY, | |
234 | .wakeup = 0, | |
235 | }, | |
236 | }; | |
237 | ||
238 | static struct gpio_keys_platform_data h3xxx_keys_data = { | |
239 | .buttons = h3xxx_button_table, | |
240 | .nbuttons = ARRAY_SIZE(h3xxx_button_table), | |
241 | }; | |
242 | ||
243 | static struct platform_device h3xxx_keys = { | |
244 | .name = "gpio-keys", | |
245 | .id = -1, | |
246 | .dev = { | |
247 | .platform_data = &h3xxx_keys_data, | |
248 | }, | |
249 | }; | |
250 | ||
86e5e38c DA |
251 | static struct platform_device *h3xxx_devices[] = { |
252 | &h3xxx_egpio, | |
c463eb62 | 253 | &h3xxx_keys, |
86e5e38c DA |
254 | }; |
255 | ||
256 | void __init h3xxx_mach_init(void) | |
257 | { | |
258 | sa1100_register_uart_fns(&h3xxx_port_fns); | |
259 | sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1); | |
260 | platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices)); | |
261 | } | |
262 | ||
263 | static struct map_desc h3600_io_desc[] __initdata = { | |
264 | { /* static memory bank 2 CS#2 */ | |
265 | .virtual = H3600_BANK_2_VIRT, | |
266 | .pfn = __phys_to_pfn(SA1100_CS2_PHYS), | |
267 | .length = 0x02800000, | |
268 | .type = MT_DEVICE | |
269 | }, { /* static memory bank 4 CS#4 */ | |
270 | .virtual = H3600_BANK_4_VIRT, | |
271 | .pfn = __phys_to_pfn(SA1100_CS4_PHYS), | |
272 | .length = 0x00800000, | |
273 | .type = MT_DEVICE | |
274 | }, { /* EGPIO 0 CS#5 */ | |
275 | .virtual = H3600_EGPIO_VIRT, | |
276 | .pfn = __phys_to_pfn(H3600_EGPIO_PHYS), | |
277 | .length = 0x01000000, | |
278 | .type = MT_DEVICE | |
279 | } | |
280 | }; | |
281 | ||
282 | /* | |
283 | * Common map_io initialization | |
284 | */ | |
285 | ||
286 | void __init h3xxx_map_io(void) | |
287 | { | |
288 | sa1100_map_io(); | |
289 | iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc)); | |
290 | ||
291 | sa1100_register_uart(0, 3); /* Common serial port */ | |
292 | // sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */ | |
293 | ||
294 | /* Ensure those pins are outputs and driving low */ | |
295 | PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM; | |
296 | PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); | |
297 | ||
298 | /* Configure suspend conditions */ | |
299 | PGSR = 0; | |
86e5e38c DA |
300 | PCFR = PCFR_OPDE; |
301 | PSDR = 0; | |
302 | ||
303 | GPCR = 0x0fffffff; /* All outputs are set low by default */ | |
304 | GPDR = 0; /* Configure all GPIOs as input */ | |
305 | } | |
306 |