diff options
Diffstat (limited to 'arch/arm/mach-sa1100/h3xxx.c')
| -rw-r--r-- | arch/arm/mach-sa1100/h3xxx.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/h3xxx.c b/arch/arm/mach-sa1100/h3xxx.c new file mode 100644 index 00000000000..bb608d437ff --- /dev/null +++ b/arch/arm/mach-sa1100/h3xxx.c @@ -0,0 +1,292 @@ +/* + * Hardware definitions for Compaq iPAQ H3xxx Handheld Computers + * + * Copyright 2000,1 Compaq Computer Corporation. + * + * Use consistent with the GNU GPL is permitted, + * provided that this copyright notice is + * preserved in its entirety in all copies and derived works. + * + * COMPAQ COMPUTER CORPORATION MAKES NO WARRANTIES, EXPRESSED OR IMPLIED, + * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS + * FITNESS FOR ANY PARTICULAR PURPOSE. + * + * Author: Jamey Hicks. + * + * History: + * + * 2001-10-?? Andrew Christian Added support for iPAQ H3800 + * and abstracted EGPIO interface. + * + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/tty.h> +#include <linux/pm.h> +#include <linux/device.h> +#include <linux/mfd/htc-egpio.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/serial_core.h> +#include <linux/gpio.h> +#include <linux/platform_device.h> + +#include <asm/irq.h> +#include <mach/hardware.h> +#include <asm/mach-types.h> +#include <asm/setup.h> + +#include <asm/mach/irq.h> +#include <asm/mach/arch.h> +#include <asm/mach/flash.h> +#include <asm/mach/irda.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 */ +} + |