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/machine.h>
15 #include <linux/gpio.h>
16 #include <linux/gpio_keys.h>
17 #include <linux/input.h>
18 #include <linux/mtd/mtd.h>
19 #include <linux/mtd/partitions.h>
20 #include <linux/platform_data/gpio-htc-egpio.h>
21 #include <linux/platform_data/sa11x0-serial.h>
22 #include <linux/platform_device.h>
23 #include <linux/serial_core.h>
25 #include <asm/mach/flash.h>
26 #include <asm/mach/map.h>
28 #include <mach/h3xxx.h>
29 #include <mach/irqs.h>
36 static struct mtd_partition h3xxx_partitions[] = {
38 .name = "H3XXX boot firmware",
41 .mask_flags = MTD_WRITEABLE, /* force read-only */
43 .name = "H3XXX rootfs",
44 .size = MTDPART_SIZ_FULL,
49 static void h3xxx_set_vpp(int vpp)
51 gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp);
54 static int h3xxx_flash_init(void)
56 int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp");
58 pr_err("%s: can't request H3XXX_EGPIO_VPP_ON\n", __func__);
62 err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0);
64 gpio_free(H3XXX_EGPIO_VPP_ON);
69 static void h3xxx_flash_exit(void)
71 gpio_free(H3XXX_EGPIO_VPP_ON);
74 static struct flash_platform_data h3xxx_flash_data = {
75 .map_name = "cfi_probe",
76 .set_vpp = h3xxx_set_vpp,
77 .init = h3xxx_flash_init,
78 .exit = h3xxx_flash_exit,
79 .parts = h3xxx_partitions,
80 .nr_parts = ARRAY_SIZE(h3xxx_partitions),
83 static struct resource h3xxx_flash_resource =
84 DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);
90 static struct gpio h3xxx_uart_gpio[] = {
91 { H3XXX_GPIO_COM_DCD, GPIOF_IN, "COM DCD" },
92 { H3XXX_GPIO_COM_CTS, GPIOF_IN, "COM CTS" },
93 { H3XXX_GPIO_COM_RTS, GPIOF_OUT_INIT_LOW, "COM RTS" },
96 static bool h3xxx_uart_request_gpios(void)
98 static bool h3xxx_uart_gpio_ok;
101 if (h3xxx_uart_gpio_ok)
104 rc = gpio_request_array(h3xxx_uart_gpio, ARRAY_SIZE(h3xxx_uart_gpio));
106 pr_err("h3xxx_uart_request_gpios: error %d\n", rc);
108 h3xxx_uart_gpio_ok = true;
110 return h3xxx_uart_gpio_ok;
113 static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl)
115 if (port->mapbase == _Ser3UTCR0) {
116 if (!h3xxx_uart_request_gpios())
118 gpio_set_value(H3XXX_GPIO_COM_RTS, !(mctrl & TIOCM_RTS));
122 static u_int h3xxx_uart_get_mctrl(struct uart_port *port)
124 u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
126 if (port->mapbase == _Ser3UTCR0) {
127 if (!h3xxx_uart_request_gpios())
130 * DCD and CTS bits are inverted in GPLR by RS232 transceiver
132 if (gpio_get_value(H3XXX_GPIO_COM_DCD))
134 if (gpio_get_value(H3XXX_GPIO_COM_CTS))
141 static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
143 if (port->mapbase == _Ser3UTCR0) {
144 if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) {
145 gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state);
146 gpio_free(H3XXX_EGPIO_RS232_ON);
148 pr_err("%s: can't request H3XXX_EGPIO_RS232_ON\n",
155 * Enable/Disable wake up events for this serial port.
156 * Obviously, we only support this on the normal COM port.
158 static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable)
162 if (port->mapbase == _Ser3UTCR0) {
164 PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */
166 PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */
172 static struct sa1100_port_fns h3xxx_port_fns __initdata = {
173 .set_mctrl = h3xxx_uart_set_mctrl,
174 .get_mctrl = h3xxx_uart_get_mctrl,
176 .set_wake = h3xxx_uart_set_wake,
183 static struct resource egpio_resources[] = {
184 [0] = DEFINE_RES_MEM(H3600_EGPIO_PHYS, 0x4),
187 static struct htc_egpio_chip egpio_chips[] = {
190 .gpio_base = H3XXX_EGPIO_BASE,
192 .direction = HTC_EGPIO_OUTPUT,
193 .initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */
197 static struct htc_egpio_platform_data egpio_info = {
201 .num_chips = ARRAY_SIZE(egpio_chips),
204 static struct platform_device h3xxx_egpio = {
207 .resource = egpio_resources,
208 .num_resources = ARRAY_SIZE(egpio_resources),
210 .platform_data = &egpio_info,
218 static struct gpio_keys_button h3xxx_button_table[] = {
221 .gpio = H3XXX_GPIO_PWR_BUTTON,
222 .desc = "Power Button",
228 .gpio = H3XXX_GPIO_ACTION_BUTTON,
230 .desc = "Action button",
236 static struct gpio_keys_platform_data h3xxx_keys_data = {
237 .buttons = h3xxx_button_table,
238 .nbuttons = ARRAY_SIZE(h3xxx_button_table),
241 static struct platform_device h3xxx_keys = {
245 .platform_data = &h3xxx_keys_data,
249 static struct resource h3xxx_micro_resources[] = {
250 DEFINE_RES_MEM(0x80010000, SZ_4K),
251 DEFINE_RES_MEM(0x80020000, SZ_4K),
252 DEFINE_RES_IRQ(IRQ_Ser1UART),
255 struct platform_device h3xxx_micro_asic = {
256 .name = "ipaq-h3xxx-micro",
258 .resource = h3xxx_micro_resources,
259 .num_resources = ARRAY_SIZE(h3xxx_micro_resources),
262 static struct platform_device *h3xxx_devices[] = {
268 static struct gpiod_lookup_table h3xxx_pcmcia_gpio_table = {
269 .dev_id = "sa11x0-pcmcia",
271 GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_CD0,
272 "pcmcia0-detect", GPIO_ACTIVE_LOW),
273 GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_IRQ0,
274 "pcmcia0-ready", GPIO_ACTIVE_HIGH),
275 GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_CD1,
276 "pcmcia1-detect", GPIO_ACTIVE_LOW),
277 GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_IRQ1,
278 "pcmcia1-ready", GPIO_ACTIVE_HIGH),
283 void __init h3xxx_mach_init(void)
285 gpiod_add_lookup_table(&h3xxx_pcmcia_gpio_table);
286 sa1100_register_uart_fns(&h3xxx_port_fns);
287 sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
288 platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices));
291 static struct map_desc h3600_io_desc[] __initdata = {
292 { /* static memory bank 2 CS#2 */
293 .virtual = H3600_BANK_2_VIRT,
294 .pfn = __phys_to_pfn(SA1100_CS2_PHYS),
295 .length = 0x02800000,
297 }, { /* static memory bank 4 CS#4 */
298 .virtual = H3600_BANK_4_VIRT,
299 .pfn = __phys_to_pfn(SA1100_CS4_PHYS),
300 .length = 0x00800000,
302 }, { /* EGPIO 0 CS#5 */
303 .virtual = H3600_EGPIO_VIRT,
304 .pfn = __phys_to_pfn(H3600_EGPIO_PHYS),
305 .length = 0x01000000,
311 * Common map_io initialization
314 void __init h3xxx_map_io(void)
317 iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));
319 sa1100_register_uart(0, 3); /* Common serial port */
320 // sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */
322 /* Ensure those pins are outputs and driving low */
323 PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
324 PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
326 /* Configure suspend conditions */
331 GPCR = 0x0fffffff; /* All outputs are set low by default */
332 GPDR = 0; /* Configure all GPIOs as input */