| /* |
| * 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 <mad_soft@inbox.ru> |
| * |
| * 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 <linux/kernel.h> |
| #include <linux/gpio.h> |
| #include <linux/mfd/htc-egpio.h> |
| #include <linux/mtd/mtd.h> |
| #include <linux/mtd/partitions.h> |
| #include <linux/platform_device.h> |
| #include <linux/serial_core.h> |
| |
| #include <asm/mach/flash.h> |
| #include <asm/mach/map.h> |
| #include <asm/mach/serial_sa1100.h> |
| |
| #include <mach/h3xxx.h> |
| |
| #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, |
| }, |
| }; |
| |
| static struct platform_device *h3xxx_devices[] = { |
| &h3xxx_egpio, |
| }; |
| |
| 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; |
| PWER = PWER_GPIO0; |
| PCFR = PCFR_OPDE; |
| PSDR = 0; |
| |
| GPCR = 0x0fffffff; /* All outputs are set low by default */ |
| GPDR = 0; /* Configure all GPIOs as input */ |
| } |
| |