1 files changed, 313 insertions, 0 deletions

diff --git a/arch/arm/mach-sa1100/h3xxx.c b/arch/arm/mach-sa1100/h3xxx.c
new file mode 100644
index 000000000000..b0784c974c2d
--- /dev/null
+++ b/arch/arm/mach-sa1100/h3xxx.c
@@ -0,0 +1,313 @@
+/*
+ * 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/gpio_keys.h>
+#include <linux/input.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) {
+                pr_err("%s: can't request H3XXX_EGPIO_VPP_ON\n", __func__);
+                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);
+                } else {
+                        pr_err("%s: can't request H3XXX_EGPIO_RS232_ON\n",
+                                __func__);
+                }
+        }
+}
+
+/*
+ * 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 */
+}
+