/* * Support for Compaq iPAQ H3100 and H3600 handheld computers (common code) * * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks) * Copyright (c) 2009 Dmitry Artamonow * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "generic.h" void h3xxx_init_gpio(struct gpio_default_state *s, size_t n) { while (n--) { const char *name = s->name; int err; if (!name) name = "[init]"; err = gpio_request(s->gpio, name); if (err) { printk(KERN_ERR "gpio%u: unable to request: %d\n", s->gpio, err); continue; } if (s->mode >= 0) { err = gpio_direction_output(s->gpio, s->mode); } else { err = gpio_direction_input(s->gpio); } if (err) { printk(KERN_ERR "gpio%u: unable to set direction: %d\n", s->gpio, err); continue; } if (!s->name) gpio_free(s->gpio); s++; } } /* * H3xxx flash support */ static struct mtd_partition h3xxx_partitions[] = { { .name = "H3XXX boot firmware", .size = 0x00040000, .offset = 0, .mask_flags = MTD_WRITEABLE, /* force read-only */ }, { .name = "H3XXX rootfs", .size = MTDPART_SIZ_FULL, .offset = 0x00040000, } }; static void h3xxx_set_vpp(int vpp) { gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp); } static int h3xxx_flash_init(void) { int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp"); if (err) return err; err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0); if (err) gpio_free(H3XXX_EGPIO_VPP_ON); return err; } static void h3xxx_flash_exit(void) { gpio_free(H3XXX_EGPIO_VPP_ON); } static struct flash_platform_data h3xxx_flash_data = { .map_name = "cfi_probe", .set_vpp = h3xxx_set_vpp, .init = h3xxx_flash_init, .exit = h3xxx_flash_exit, .parts = h3xxx_partitions, .nr_parts = ARRAY_SIZE(h3xxx_partitions), }; static struct resource h3xxx_flash_resource = { .start = SA1100_CS0_PHYS, .end = SA1100_CS0_PHYS + SZ_32M - 1, .flags = IORESOURCE_MEM, }; /* * H3xxx uart support */ static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl) { if (port->mapbase == _Ser3UTCR0) { gpio_set_value(H3XXX_GPIO_COM_RTS, !(mctrl & TIOCM_RTS)); } } static u_int h3xxx_uart_get_mctrl(struct uart_port *port) { u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR; if (port->mapbase == _Ser3UTCR0) { /* * DCD and CTS bits are inverted in GPLR by RS232 transceiver */ if (gpio_get_value(H3XXX_GPIO_COM_DCD)) ret &= ~TIOCM_CD; if (gpio_get_value(H3XXX_GPIO_COM_CTS)) ret &= ~TIOCM_CTS; } return ret; } static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate) { if (port->mapbase == _Ser3UTCR0) if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) { gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state); gpio_free(H3XXX_EGPIO_RS232_ON); } } /* * Enable/Disable wake up events for this serial port. * Obviously, we only support this on the normal COM port. */ static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable) { int err = -EINVAL; if (port->mapbase == _Ser3UTCR0) { if (enable) PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */ else PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */ err = 0; } return err; } static struct sa1100_port_fns h3xxx_port_fns __initdata = { .set_mctrl = h3xxx_uart_set_mctrl, .get_mctrl = h3xxx_uart_get_mctrl, .pm = h3xxx_uart_pm, .set_wake = h3xxx_uart_set_wake, }; /* * EGPIO */ static struct resource egpio_resources[] = { [0] = { .start = H3600_EGPIO_PHYS, .end = H3600_EGPIO_PHYS + 0x4 - 1, .flags = IORESOURCE_MEM, }, }; static struct htc_egpio_chip egpio_chips[] = { [0] = { .reg_start = 0, .gpio_base = H3XXX_EGPIO_BASE, .num_gpios = 16, .direction = HTC_EGPIO_OUTPUT, .initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */ }, }; static struct htc_egpio_platform_data egpio_info = { .reg_width = 16, .bus_width = 16, .chip = egpio_chips, .num_chips = ARRAY_SIZE(egpio_chips), }; static struct platform_device h3xxx_egpio = { .name = "htc-egpio", .id = -1, .resource = egpio_resources, .num_resources = ARRAY_SIZE(egpio_resources), .dev = { .platform_data = &egpio_info, }, }; /* * GPIO keys */ static struct gpio_keys_button h3xxx_button_table[] = { { .code = KEY_POWER, .gpio = H3XXX_GPIO_PWR_BUTTON, .desc = "Power Button", .active_low = 1, .type = EV_KEY, .wakeup = 1, }, { .code = KEY_ENTER, .gpio = H3XXX_GPIO_ACTION_BUTTON, .active_low = 1, .desc = "Action button", .type = EV_KEY, .wakeup = 0, }, }; static struct gpio_keys_platform_data h3xxx_keys_data = { .buttons = h3xxx_button_table, .nbuttons = ARRAY_SIZE(h3xxx_button_table), }; static struct platform_device h3xxx_keys = { .name = "gpio-keys", .id = -1, .dev = { .platform_data = &h3xxx_keys_data, }, }; static struct platform_device *h3xxx_devices[] = { &h3xxx_egpio, &h3xxx_keys, }; void __init h3xxx_mach_init(void) { sa1100_register_uart_fns(&h3xxx_port_fns); sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1); platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices)); } static struct map_desc h3600_io_desc[] __initdata = { { /* static memory bank 2 CS#2 */ .virtual = H3600_BANK_2_VIRT, .pfn = __phys_to_pfn(SA1100_CS2_PHYS), .length = 0x02800000, .type = MT_DEVICE }, { /* static memory bank 4 CS#4 */ .virtual = H3600_BANK_4_VIRT, .pfn = __phys_to_pfn(SA1100_CS4_PHYS), .length = 0x00800000, .type = MT_DEVICE }, { /* EGPIO 0 CS#5 */ .virtual = H3600_EGPIO_VIRT, .pfn = __phys_to_pfn(H3600_EGPIO_PHYS), .length = 0x01000000, .type = MT_DEVICE } }; /* * Common map_io initialization */ void __init h3xxx_map_io(void) { sa1100_map_io(); iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc)); sa1100_register_uart(0, 3); /* Common serial port */ // sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */ /* Ensure those pins are outputs and driving low */ PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM; PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); /* Configure suspend conditions */ PGSR = 0; PCFR = PCFR_OPDE; PSDR = 0; GPCR = 0x0fffffff; /* All outputs are set low by default */ GPDR = 0; /* Configure all GPIOs as input */ }