2 * Support for Compaq iPAQ H3100 and H3600 handheld computers (common code)
4 * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
5 * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
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.
13 #include <linux/kernel.h>
14 #include <linux/gpio.h>
15 #include <linux/gpio_keys.h>
16 #include <linux/input.h>
17 #include <linux/mfd/htc-egpio.h>
18 #include <linux/mtd/mtd.h>
19 #include <linux/mtd/partitions.h>
20 #include <linux/platform_data/sa11x0-serial.h>
21 #include <linux/platform_device.h>
22 #include <linux/serial_core.h>
24 #include <asm/mach/flash.h>
25 #include <asm/mach/map.h>
27 #include <mach/h3xxx.h>
34 static struct mtd_partition h3xxx_partitions[] = {
36 .name = "H3XXX boot firmware",
39 .mask_flags = MTD_WRITEABLE, /* force read-only */
41 .name = "H3XXX rootfs",
42 .size = MTDPART_SIZ_FULL,
47 static void h3xxx_set_vpp(int vpp)
49 gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp);
52 static int h3xxx_flash_init(void)
54 int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp");
56 pr_err("%s: can't request H3XXX_EGPIO_VPP_ON\n", __func__);
60 err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0);
62 gpio_free(H3XXX_EGPIO_VPP_ON);
67 static void h3xxx_flash_exit(void)
69 gpio_free(H3XXX_EGPIO_VPP_ON);
72 static struct flash_platform_data h3xxx_flash_data = {
73 .map_name = "cfi_probe",
74 .set_vpp = h3xxx_set_vpp,
75 .init = h3xxx_flash_init,
76 .exit = h3xxx_flash_exit,
77 .parts = h3xxx_partitions,
78 .nr_parts = ARRAY_SIZE(h3xxx_partitions),
81 static struct resource h3xxx_flash_resource =
82 DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);
88 static struct gpio h3xxx_uart_gpio[] = {
89 { H3XXX_GPIO_COM_DCD, GPIOF_IN, "COM DCD" },
90 { H3XXX_GPIO_COM_CTS, GPIOF_IN, "COM CTS" },
91 { H3XXX_GPIO_COM_RTS, GPIOF_OUT_INIT_LOW, "COM RTS" },
94 static bool h3xxx_uart_request_gpios(void)
96 static bool h3xxx_uart_gpio_ok;
99 if (h3xxx_uart_gpio_ok)
102 rc = gpio_request_array(h3xxx_uart_gpio, ARRAY_SIZE(h3xxx_uart_gpio));
104 pr_err("h3xxx_uart_request_gpios: error %d\n", rc);
106 h3xxx_uart_gpio_ok = true;
108 return h3xxx_uart_gpio_ok;
111 static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl)
113 if (port->mapbase == _Ser3UTCR0) {
114 if (!h3xxx_uart_request_gpios())
116 gpio_set_value(H3XXX_GPIO_COM_RTS, !(mctrl & TIOCM_RTS));
120 static u_int h3xxx_uart_get_mctrl(struct uart_port *port)
122 u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
124 if (port->mapbase == _Ser3UTCR0) {
125 if (!h3xxx_uart_request_gpios())
128 * DCD and CTS bits are inverted in GPLR by RS232 transceiver
130 if (gpio_get_value(H3XXX_GPIO_COM_DCD))
132 if (gpio_get_value(H3XXX_GPIO_COM_CTS))
139 static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
141 if (port->mapbase == _Ser3UTCR0) {
142 if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) {
143 gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state);
144 gpio_free(H3XXX_EGPIO_RS232_ON);
146 pr_err("%s: can't request H3XXX_EGPIO_RS232_ON\n",
153 * Enable/Disable wake up events for this serial port.
154 * Obviously, we only support this on the normal COM port.
156 static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable)
160 if (port->mapbase == _Ser3UTCR0) {
162 PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */
164 PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */
170 static struct sa1100_port_fns h3xxx_port_fns __initdata = {
171 .set_mctrl = h3xxx_uart_set_mctrl,
172 .get_mctrl = h3xxx_uart_get_mctrl,
174 .set_wake = h3xxx_uart_set_wake,
181 static struct resource egpio_resources[] = {
182 [0] = DEFINE_RES_MEM(H3600_EGPIO_PHYS, 0x4),
185 static struct htc_egpio_chip egpio_chips[] = {
188 .gpio_base = H3XXX_EGPIO_BASE,
190 .direction = HTC_EGPIO_OUTPUT,
191 .initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */
195 static struct htc_egpio_platform_data egpio_info = {
199 .num_chips = ARRAY_SIZE(egpio_chips),
202 static struct platform_device h3xxx_egpio = {
205 .resource = egpio_resources,
206 .num_resources = ARRAY_SIZE(egpio_resources),
208 .platform_data = &egpio_info,
216 static struct gpio_keys_button h3xxx_button_table[] = {
219 .gpio = H3XXX_GPIO_PWR_BUTTON,
220 .desc = "Power Button",
226 .gpio = H3XXX_GPIO_ACTION_BUTTON,
228 .desc = "Action button",
234 static struct gpio_keys_platform_data h3xxx_keys_data = {
235 .buttons = h3xxx_button_table,
236 .nbuttons = ARRAY_SIZE(h3xxx_button_table),
239 static struct platform_device h3xxx_keys = {
243 .platform_data = &h3xxx_keys_data,
247 static struct platform_device *h3xxx_devices[] = {
252 void __init h3xxx_mach_init(void)
254 sa1100_register_uart_fns(&h3xxx_port_fns);
255 sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
256 platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices));
259 static struct map_desc h3600_io_desc[] __initdata = {
260 { /* static memory bank 2 CS#2 */
261 .virtual = H3600_BANK_2_VIRT,
262 .pfn = __phys_to_pfn(SA1100_CS2_PHYS),
263 .length = 0x02800000,
265 }, { /* static memory bank 4 CS#4 */
266 .virtual = H3600_BANK_4_VIRT,
267 .pfn = __phys_to_pfn(SA1100_CS4_PHYS),
268 .length = 0x00800000,
270 }, { /* EGPIO 0 CS#5 */
271 .virtual = H3600_EGPIO_VIRT,
272 .pfn = __phys_to_pfn(H3600_EGPIO_PHYS),
273 .length = 0x01000000,
279 * Common map_io initialization
282 void __init h3xxx_map_io(void)
285 iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));
287 sa1100_register_uart(0, 3); /* Common serial port */
288 // sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */
290 /* Ensure those pins are outputs and driving low */
291 PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
292 PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
294 /* Configure suspend conditions */
299 GPCR = 0x0fffffff; /* All outputs are set low by default */
300 GPDR = 0; /* Configure all GPIOs as input */