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 0000000..b0784c9
--- /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 */
+}
+