Input: add support for HP Jornada 7xx onboard keyboard

The driver supports onboard keyboards of HP Jornada 710/720/728

Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

3 files changed, 192 insertions, 0 deletions

diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 1881900f24c8..18303f2bbafd 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -219,6 +219,16 @@ config KEYBOARD_HP6XX
           To compile this driver as a module, choose M here: the
           module will be called jornada680_kbd.
 
+config KEYBOARD_HP7XX
+        tristate "HP Jornada 7XX Keyboard Driver"
+        depends on SA1100_JORNADA720_SSP && SA1100_SSP
+        help
+          Say Y here to add support for the HP Jornada 7xx (710/720/728)
+          onboard keyboard.
+
+          To compile this driver as a module, choose M here: the
+          module will be called jornada720_kbd.
+
 config KEYBOARD_OMAP
         tristate "TI OMAP keypad support"
         depends on (ARCH_OMAP1 || ARCH_OMAP2)
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index 7ecd2b05a28a..4cc7dc947db1 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -22,4 +22,5 @@ obj-$(CONFIG_KEYBOARD_PXA27x)		+= pxa27x_keyboard.o
 obj-$(CONFIG_KEYBOARD_AAED2000)         += aaed2000_kbd.o
 obj-$(CONFIG_KEYBOARD_GPIO)             += gpio_keys.o
 obj-$(CONFIG_KEYBOARD_HP6XX)            += jornada680_kbd.o
+obj-$(CONFIG_KEYBOARD_HP7XX)            += jornada720_kbd.o
 
diff --git a/drivers/input/keyboard/jornada720_kbd.c b/drivers/input/keyboard/jornada720_kbd.c
new file mode 100644
index 000000000000..dd8a037f7281
--- /dev/null
+++ b/drivers/input/keyboard/jornada720_kbd.c
@@ -0,0 +1,181 @@
+/*
+ * drivers/input/keyboard/jornada720_kbd.c
+ *
+ * HP Jornada 720 keyboard platform driver
+ *
+ * Copyright (C) 2006/2007 Kristoffer Ericson <Kristoffer.Ericson@Gmail.com>
+ *
+ *    Copyright (C) 2006 jornada 720 kbd driver by
+                Filip Zyzniewsk <Filip.Zyzniewski@tefnet.plX
+ *     based on (C) 2004 jornada 720 kbd driver by
+                Alex Lange <chicken@handhelds.org>
+ *
+ * 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/device.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/arch/jornada720.h>
+#include <asm/hardware.h>
+
+MODULE_AUTHOR("Kristoffer Ericson <Kristoffer.Ericson@gmail.com>");
+MODULE_DESCRIPTION("HP Jornada 710/720/728 keyboard driver");
+MODULE_LICENSE("GPLv2");
+
+static unsigned short jornada_std_keymap[128] = {                                       /* ROW */
+        0, KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7,             /* #1  */
+        KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE,       /*  -> */
+        0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9,               /* #2  */
+        KEY_0, KEY_MINUS, KEY_EQUAL,0, 0, 0,                                            /*  -> */
+        0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_U, KEY_I, KEY_O,               /* #3  */
+        KEY_P, KEY_BACKSLASH, KEY_BACKSPACE, 0, 0, 0,                                   /*  -> */
+        0, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_J, KEY_K, KEY_L,               /* #4  */
+        KEY_SEMICOLON, KEY_LEFTBRACE, KEY_RIGHTBRACE, 0, 0, 0,                          /*  -> */
+        0, KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B, KEY_N, KEY_M, KEY_COMMA,                  /* #5  */
+        KEY_DOT, KEY_KPMINUS, KEY_APOSTROPHE, KEY_ENTER, 0, 0,0,                        /*  -> */
+        0, KEY_TAB, 0, KEY_LEFTSHIFT, 0, KEY_APOSTROPHE, 0, 0, 0, 0,                    /* #6  */
+        KEY_UP, 0, KEY_RIGHTSHIFT, 0, 0, 0,0, 0, 0, 0, 0, KEY_LEFTALT, KEY_GRAVE,       /*  -> */
+        0, 0, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0,0, KEY_KPASTERISK,              /*  -> */
+        KEY_LEFTCTRL, 0, KEY_SPACE, 0, 0, 0, KEY_SLASH, KEY_DELETE, 0, 0,               /*  -> */
+        0, 0, 0, KEY_POWER,                                                             /*  -> */
+};
+
+struct jornadakbd {
+        unsigned short keymap[ARRAY_SIZE(jornada_std_keymap)];
+        struct input_dev *input;
+};
+
+static irqreturn_t jornada720_kbd_interrupt(int irq, void *dev_id)
+{
+        struct platform_device *pdev = dev_id;
+        struct jornadakbd *jornadakbd = platform_get_drvdata(pdev);
+        u8 count, kbd_data;
+
+        /* startup ssp with spinlock */
+        jornada_ssp_start();
+
+        if (jornada_ssp_inout(GETSCANKEYCODE) != TXDUMMY) {
+                printk(KERN_DEBUG
+                        "jornada720_kbd: "
+                        "GetKeycode command failed with ETIMEDOUT, "
+                        "flushed bus\n");
+        } else {
+                /* How many keycodes are waiting for us? */
+                count = jornada_ssp_byte(TXDUMMY);
+
+                /* Lets drag them out one at a time */
+                while (count--) {
+                        /* Exchange TxDummy for location (keymap[kbddata]) */
+                        kbd_data = jornada_ssp_byte(TXDUMMY);
+
+                        input_report_key(jornadakbd->input,
+                                         jornadakbd->keymap[kbd_data & 0x7f],
+                                         !(kbd_data & 0x80));
+                        input_sync(jornadakbd->input);
+                }
+        }
+
+        /* release spinlock and turn off ssp */
+        jornada_ssp_end();
+
+        return IRQ_HANDLED;
+};
+
+static int __devinit jornada720_kbd_probe(struct platform_device *pdev)
+{
+        struct jornadakbd *jornadakbd;
+        struct input_dev *input_dev;
+        int i, err;
+
+        jornadakbd = kzalloc(sizeof(struct jornadakbd), GFP_KERNEL);
+        input_dev = input_allocate_device();
+        if (!jornadakbd || !input_dev) {
+                err = -ENOMEM;
+                goto fail1;
+        }
+
+        platform_set_drvdata(pdev, jornadakbd);
+
+        memcpy(jornadakbd->keymap, jornada_std_keymap,
+                sizeof(jornada_std_keymap));
+        jornadakbd->input = input_dev;
+
+        input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
+        input_dev->name = "HP Jornada 720 keyboard";
+        input_dev->phys = "jornadakbd/input0";
+        input_dev->keycode = jornadakbd->keymap;
+        input_dev->keycodesize = sizeof(unsigned short);
+        input_dev->keycodemax = ARRAY_SIZE(jornada_std_keymap);
+        input_dev->id.bustype = BUS_HOST;
+        input_dev->dev.parent = &pdev->dev;
+
+        for (i = 0; i < ARRAY_SIZE(jornadakbd->keymap); i++)
+                __set_bit(jornadakbd->keymap[i], input_dev->keybit);
+        __clear_bit(KEY_RESERVED, input_dev->keybit);
+
+        err = request_irq(IRQ_GPIO0,
+                          jornada720_kbd_interrupt,
+                          IRQF_DISABLED | IRQF_TRIGGER_FALLING,
+                          "jornadakbd", pdev);
+        if (err) {
+                printk(KERN_INFO "jornadakbd720_kbd: Unable to grab IRQ\n");
+                goto fail1;
+        }
+
+        err = input_register_device(jornadakbd->input);
+        if (err)
+                goto fail2;
+
+        return 0;
+
+ fail2: /* IRQ, DEVICE, MEMORY */
+        free_irq(IRQ_GPIO0, pdev);
+ fail1: /* DEVICE, MEMORY */
+        platform_set_drvdata(pdev, NULL);
+        input_free_device(input_dev);
+        kfree(jornadakbd);
+        return err;
+};
+
+static int __devexit jornada720_kbd_remove(struct platform_device *pdev)
+{
+        struct jornadakbd *jornadakbd = platform_get_drvdata(pdev);
+
+        free_irq(IRQ_GPIO0, pdev);
+        platform_set_drvdata(pdev, NULL);
+        input_unregister_device(jornadakbd->input);
+        kfree(jornadakbd);
+
+        return 0;
+}
+
+static struct platform_driver jornada720_kbd_driver = {
+        .driver  = {
+                .name    = "jornada720_kbd",
+         },
+        .probe   = jornada720_kbd_probe,
+        .remove  = __devexit_p(jornada720_kbd_remove),
+};
+
+static int __init jornada720_kbd_init(void)
+{
+        return platform_driver_register(&jornada720_kbd_driver);
+}
+
+static void __exit jornada720_kbd_exit(void)
+{
+        platform_driver_unregister(&jornada720_kbd_driver);
+}
+
+module_init(jornada720_kbd_init);
+module_exit(jornada720_kbd_exit);