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-rw-r--r--kernel/arch/arm/mach-sa1100/h3xxx.c317
1 files changed, 317 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-sa1100/h3xxx.c b/kernel/arch/arm/mach-sa1100/h3xxx.c
new file mode 100644
index 000000000..b1d4faa12
--- /dev/null
+++ b/kernel/arch/arm/mach-sa1100/h3xxx.c
@@ -0,0 +1,317 @@
+/*
+ * 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_data/sa11x0-serial.h>
+#include <linux/platform_device.h>
+#include <linux/serial_core.h>
+
+#include <asm/mach/flash.h>
+#include <asm/mach/map.h>
+
+#include <mach/h3xxx.h>
+#include <mach/irqs.h>
+
+#include "generic.h"
+
+/*
+ * 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 =
+ DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);
+
+
+/*
+ * H3xxx uart support
+ */
+static struct gpio h3xxx_uart_gpio[] = {
+ { H3XXX_GPIO_COM_DCD, GPIOF_IN, "COM DCD" },
+ { H3XXX_GPIO_COM_CTS, GPIOF_IN, "COM CTS" },
+ { H3XXX_GPIO_COM_RTS, GPIOF_OUT_INIT_LOW, "COM RTS" },
+};
+
+static bool h3xxx_uart_request_gpios(void)
+{
+ static bool h3xxx_uart_gpio_ok;
+ int rc;
+
+ if (h3xxx_uart_gpio_ok)
+ return true;
+
+ rc = gpio_request_array(h3xxx_uart_gpio, ARRAY_SIZE(h3xxx_uart_gpio));
+ if (rc)
+ pr_err("h3xxx_uart_request_gpios: error %d\n", rc);
+ else
+ h3xxx_uart_gpio_ok = true;
+
+ return h3xxx_uart_gpio_ok;
+}
+
+static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl)
+{
+ if (port->mapbase == _Ser3UTCR0) {
+ if (!h3xxx_uart_request_gpios())
+ return;
+ 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) {
+ if (!h3xxx_uart_request_gpios())
+ return ret;
+ /*
+ * 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] = DEFINE_RES_MEM(H3600_EGPIO_PHYS, 0x4),
+};
+
+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 resource h3xxx_micro_resources[] = {
+ DEFINE_RES_MEM(0x80010000, SZ_4K),
+ DEFINE_RES_MEM(0x80020000, SZ_4K),
+ DEFINE_RES_IRQ(IRQ_Ser1UART),
+};
+
+struct platform_device h3xxx_micro_asic = {
+ .name = "ipaq-h3xxx-micro",
+ .id = -1,
+ .resource = h3xxx_micro_resources,
+ .num_resources = ARRAY_SIZE(h3xxx_micro_resources),
+};
+
+static struct platform_device *h3xxx_devices[] = {
+ &h3xxx_egpio,
+ &h3xxx_keys,
+ &h3xxx_micro_asic,
+};
+
+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 */
+}
+