Re: [PATCH] ati_remote2 loadable keymap support

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On Thursday 17 April 2008 20:00:23 Dmitry Torokhov wrote:
> On Tue, Apr 08, 2008 at 11:18:26PM +0300, Ville Syrj?l? wrote:
> > On Sat, Apr 05, 2008 at 07:30:10PM +0100, Peter Stokes wrote:
> > > +	u8  hwcode;
> > > +	u16 keycode[ARRAY_SIZE(ati_remote2_modes)];
> > > +} ati_remote2_keycodes[] = {
> > > +/*	 hwcode   AUX1             AUX2             AUX3             AUX4  
> > >           PC                */
> >
> > checkpatch.pl doesn't like these long lines.
>
> In this case screw checkpatch, sometimes longer lines are better than
> the alternative.
>
> Peter, is an updated patch addressing other Ville's concerns coming?

Please find attached an updated patch. Sorry for the delay.

Best regards

Peter


Signed-off-by: Peter Stokes <linux@xxxxxxxxxxxx>


--- linux-2.6.24-orig/drivers/input/misc/ati_remote2.c	2008-01-24 22:58:37.000000000 +0000
+++ linux-2.6.24/drivers/input/misc/ati_remote2.c	2008-04-18 20:18:32.000000000 +0100
@@ -2,7 +2,7 @@
  * ati_remote2 - ATI/Philips USB RF remote driver
  *
  * Copyright (C) 2005 Ville Syrjala <syrjala@xxxxxx>
- * Copyright (C) 2007 Peter Stokes <linux@xxxxxxxxxxxxxxxxxxxxxx>
+ * Copyright (C) 2008 Peter Stokes <linux@xxxxxxxxxxxx>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2
@@ -12,7 +12,7 @@
 #include <linux/usb/input.h>
 
 #define DRIVER_DESC    "ATI/Philips USB RF remote driver"
-#define DRIVER_VERSION "0.2"
+#define DRIVER_VERSION "0.3"
 
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_VERSION(DRIVER_VERSION);
@@ -27,7 +27,7 @@
  * A remote's "channel" may be altered by pressing and holding the "PC" button for
  * approximately 3 seconds, after which the button will slowly flash the count of the
  * currently configured "channel", using the numeric keypad enter a number between 1 and
- * 16 and then the "PC" button again, the button will slowly flash the count of the
+ * 16 and then press the "PC" button again, the button will slowly flash the count of the
  * newly configured "channel".
  */
 
@@ -45,61 +45,66 @@
 };
 MODULE_DEVICE_TABLE(usb, ati_remote2_id_table);
 
+
+static u8 ati_remote2_modes[] = {
+	0x01, /* AUX1 */
+	0x02, /* AUX2 */
+	0x04, /* AUX3 */
+	0x08, /* AUX4 */
+	0x10, /* PC   */
+};
+
 static struct {
-	int hw_code;
-	int key_code;
-} ati_remote2_key_table[] = {
-	{ 0x00, KEY_0 },
-	{ 0x01, KEY_1 },
-	{ 0x02, KEY_2 },
-	{ 0x03, KEY_3 },
-	{ 0x04, KEY_4 },
-	{ 0x05, KEY_5 },
-	{ 0x06, KEY_6 },
-	{ 0x07, KEY_7 },
-	{ 0x08, KEY_8 },
-	{ 0x09, KEY_9 },
-	{ 0x0c, KEY_POWER },
-	{ 0x0d, KEY_MUTE },
-	{ 0x10, KEY_VOLUMEUP },
-	{ 0x11, KEY_VOLUMEDOWN },
-	{ 0x20, KEY_CHANNELUP },
-	{ 0x21, KEY_CHANNELDOWN },
-	{ 0x28, KEY_FORWARD },
-	{ 0x29, KEY_REWIND },
-	{ 0x2c, KEY_PLAY },
-	{ 0x30, KEY_PAUSE },
-	{ 0x31, KEY_STOP },
-	{ 0x37, KEY_RECORD },
-	{ 0x38, KEY_DVD },
-	{ 0x39, KEY_TV },
-	{ 0x54, KEY_MENU },
-	{ 0x58, KEY_UP },
-	{ 0x59, KEY_DOWN },
-	{ 0x5a, KEY_LEFT },
-	{ 0x5b, KEY_RIGHT },
-	{ 0x5c, KEY_OK },
-	{ 0x78, KEY_A },
-	{ 0x79, KEY_B },
-	{ 0x7a, KEY_C },
-	{ 0x7b, KEY_D },
-	{ 0x7c, KEY_E },
-	{ 0x7d, KEY_F },
-	{ 0x82, KEY_ENTER },
-	{ 0x8e, KEY_VENDOR },
-	{ 0x96, KEY_COFFEE },
-	{ 0xa9, BTN_LEFT },
-	{ 0xaa, BTN_RIGHT },
-	{ 0xbe, KEY_QUESTION },
-	{ 0xd5, KEY_FRONT },
-	{ 0xd0, KEY_EDIT },
-	{ 0xf9, KEY_INFO },
-	{ (0x00 << 8) | 0x3f, KEY_PROG1 },
-	{ (0x01 << 8) | 0x3f, KEY_PROG2 },
-	{ (0x02 << 8) | 0x3f, KEY_PROG3 },
-	{ (0x03 << 8) | 0x3f, KEY_PROG4 },
-	{ (0x04 << 8) | 0x3f, KEY_PC },
-	{ 0, KEY_RESERVED }
+	u8  hwcode;
+	u16 keycode[ARRAY_SIZE(ati_remote2_modes)];
+} ati_remote2_keycodes[] = {
+/*	 hwcode   AUX1             AUX2             AUX3             AUX4             PC                */
+	{ 0x00, { KEY_0,           KEY_0,           KEY_0,           KEY_0,           KEY_0           } },
+	{ 0x01, { KEY_1,           KEY_1,           KEY_1,           KEY_1,           KEY_1           } },
+	{ 0x02, { KEY_2,           KEY_2,           KEY_2,           KEY_2,           KEY_2           } },
+	{ 0x03, { KEY_3,           KEY_3,           KEY_3,           KEY_3,           KEY_3           } },
+	{ 0x04, { KEY_4,           KEY_4,           KEY_4,           KEY_4,           KEY_4           } },
+	{ 0x05, { KEY_5,           KEY_5,           KEY_5,           KEY_5,           KEY_5           } },
+	{ 0x06, { KEY_6,           KEY_6,           KEY_6,           KEY_6,           KEY_6           } },
+	{ 0x07, { KEY_7,           KEY_7,           KEY_7,           KEY_7,           KEY_7           } },
+	{ 0x08, { KEY_8,           KEY_8,           KEY_8,           KEY_8,           KEY_8           } },
+	{ 0x09, { KEY_9,           KEY_9,           KEY_9,           KEY_9,           KEY_9           } },
+	{ 0x0c, { KEY_POWER,       KEY_POWER,       KEY_POWER,       KEY_POWER,       KEY_POWER       } },
+	{ 0x0d, { KEY_MUTE,        KEY_MUTE,        KEY_MUTE,        KEY_MUTE,        KEY_MUTE        } },
+	{ 0x10, { KEY_VOLUMEUP,    KEY_VOLUMEUP,    KEY_VOLUMEUP,    KEY_VOLUMEUP,    KEY_VOLUMEUP    } },
+	{ 0x11, { KEY_VOLUMEDOWN,  KEY_VOLUMEDOWN,  KEY_VOLUMEDOWN,  KEY_VOLUMEDOWN,  KEY_VOLUMEDOWN  } },
+	{ 0x20, { KEY_CHANNELUP,   KEY_CHANNELUP,   KEY_CHANNELUP,   KEY_CHANNELUP,   KEY_CHANNELUP   } },
+	{ 0x21, { KEY_CHANNELDOWN, KEY_CHANNELDOWN, KEY_CHANNELDOWN, KEY_CHANNELDOWN, KEY_CHANNELDOWN } },
+	{ 0x28, { KEY_FORWARD,     KEY_FORWARD,     KEY_FORWARD,     KEY_FORWARD,     KEY_FORWARD     } },
+	{ 0x29, { KEY_REWIND,      KEY_REWIND,      KEY_REWIND,      KEY_REWIND,      KEY_REWIND      } },
+	{ 0x2c, { KEY_PLAY,        KEY_PLAY,        KEY_PLAY,        KEY_PLAY,        KEY_PLAY        } },
+	{ 0x30, { KEY_PAUSE,       KEY_PAUSE,       KEY_PAUSE,       KEY_PAUSE,       KEY_PAUSE       } },
+	{ 0x31, { KEY_STOP,        KEY_STOP,        KEY_STOP,        KEY_STOP,        KEY_STOP        } },
+	{ 0x37, { KEY_RECORD,      KEY_RECORD,      KEY_RECORD,      KEY_RECORD,      KEY_RECORD      } },
+	{ 0x38, { KEY_DVD,         KEY_DVD,         KEY_DVD,         KEY_DVD,         KEY_DVD         } },
+	{ 0x39, { KEY_TV,          KEY_TV,          KEY_TV,          KEY_TV,          KEY_TV          } },
+	{ 0x3F, { KEY_PROG1,       KEY_PROG2,       KEY_PROG3,       KEY_PROG4,       KEY_PC          } },
+	{ 0x54, { KEY_MENU,        KEY_MENU,        KEY_MENU,        KEY_MENU,        KEY_MENU        } },
+	{ 0x58, { KEY_UP,          KEY_UP,          KEY_UP,          KEY_UP,          KEY_UP          } },
+	{ 0x59, { KEY_DOWN,        KEY_DOWN,        KEY_DOWN,        KEY_DOWN,        KEY_DOWN        } },
+	{ 0x5a, { KEY_LEFT,        KEY_LEFT,        KEY_LEFT,        KEY_LEFT,        KEY_LEFT        } },
+	{ 0x5b, { KEY_RIGHT,       KEY_RIGHT,       KEY_RIGHT,       KEY_RIGHT,       KEY_RIGHT       } },
+	{ 0x5c, { KEY_OK,          KEY_OK,          KEY_OK,          KEY_OK,          KEY_OK          } },
+	{ 0x78, { KEY_A,           KEY_A,           KEY_A,           KEY_A,           KEY_A           } },
+	{ 0x79, { KEY_B,           KEY_B,           KEY_B,           KEY_B,           KEY_B           } },
+	{ 0x7a, { KEY_C,           KEY_C,           KEY_C,           KEY_C,           KEY_C           } },
+	{ 0x7b, { KEY_D,           KEY_D,           KEY_D,           KEY_D,           KEY_D           } },
+	{ 0x7c, { KEY_E,           KEY_E,           KEY_E,           KEY_E,           KEY_E           } },
+	{ 0x7d, { KEY_F,           KEY_F,           KEY_F,           KEY_F,           KEY_F           } },
+	{ 0x82, { KEY_ENTER,       KEY_ENTER,       KEY_ENTER,       KEY_ENTER,       KEY_ENTER       } },
+	{ 0x8e, { KEY_VENDOR,      KEY_VENDOR,      KEY_VENDOR,      KEY_VENDOR,      KEY_VENDOR      } },
+	{ 0x96, { KEY_COFFEE,      KEY_COFFEE,      KEY_COFFEE,      KEY_COFFEE,      KEY_COFFEE      } },
+	{ 0xa9, { BTN_LEFT,        BTN_LEFT,        BTN_LEFT,        BTN_LEFT,        BTN_LEFT        } },
+	{ 0xaa, { BTN_RIGHT,       BTN_RIGHT,       BTN_RIGHT,       BTN_RIGHT,       BTN_RIGHT,      } },
+	{ 0xbe, { KEY_QUESTION,    KEY_QUESTION,    KEY_QUESTION,    KEY_QUESTION,    KEY_QUESTION,   } },
+	{ 0xd0, { KEY_EDIT,        KEY_EDIT,        KEY_EDIT,        KEY_EDIT,        KEY_EDIT        } },
+	{ 0xd5, { KEY_FRONT,       KEY_FRONT,       KEY_FRONT,       KEY_FRONT,       KEY_FRONT       } },
+	{ 0xf9, { KEY_INFO,        KEY_INFO,        KEY_INFO,        KEY_INFO,        KEY_INFO        } }
 };
 
 struct ati_remote2 {
@@ -117,6 +122,8 @@
 
 	char name[64];
 	char phys[64];
+
+	u32 keycode[ARRAY_SIZE(ati_remote2_keycodes)][ARRAY_SIZE(ati_remote2_modes)];
 };
 
 static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id);
@@ -159,11 +166,84 @@
 	usb_kill_urb(ar2->urb[1]);
 }
 
+static int ati_remote2_lookup(u8 hwcode)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ati_remote2_keycodes); i++)
+		if (ati_remote2_keycodes[i].hwcode == hwcode)
+			return i;
+
+	return -1;
+}
+
+static int ati_remote2_getkeycode(struct input_dev *idev,
+				  int scancode, int *keycode)
+{
+	struct ati_remote2 *ar2 = input_get_drvdata(idev);
+	int index, mode;
+
+	if (((scancode >> 8) & (mode_mask & 0x1F)) != (scancode >> 8))
+		return -EINVAL;
+
+	index = ati_remote2_lookup(scancode & 0xFF);
+	if (index == -1)
+		return -EINVAL;
+
+	for (mode = 0; mode < ARRAY_SIZE(ati_remote2_modes); mode++) {
+		if ((1 << mode) & (scancode >> 8)) {
+			*keycode = ar2->keycode[index][mode];
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
+static int ati_remote2_setkeycode(struct input_dev *idev,
+				  int scancode, int keycode)
+{
+	struct ati_remote2 *ar2 = input_get_drvdata(idev);
+	int old_keycode = -1;
+	int index, mode;
+
+	if (((scancode >> 8) & (mode_mask & 0x1F)) != (scancode >> 8))
+		return -EINVAL;
+
+	index = ati_remote2_lookup(scancode & 0xFF);
+	if (index == -1)
+		return -EINVAL;
+
+	if (keycode < 0 || keycode > KEY_MAX)
+		return -EINVAL;
+
+	for (mode = 0; mode < ARRAY_SIZE(ati_remote2_modes); mode++) {
+		if ((1 << mode) & (scancode >> 8)) {
+			old_keycode = ar2->keycode[index][mode];
+			ar2->keycode[index][mode] = keycode;
+		}
+	}
+
+	set_bit(keycode, idev->keybit);
+
+	for (index = 0; index < ARRAY_SIZE(ati_remote2_keycodes); index++) {
+		for (mode = 0; mode < ARRAY_SIZE(ati_remote2_modes); mode++) {
+			if (ar2->keycode[index][mode] == old_keycode)
+				return 0;
+		}
+	}
+
+	clear_bit(old_keycode, idev->keybit);
+
+	return 0;
+}
+
+
 static void ati_remote2_input_mouse(struct ati_remote2 *ar2)
 {
 	struct input_dev *idev = ar2->idev;
 	u8 *data = ar2->buf[0];
-	int channel, mode;
+	u8 channel, mode;
 
 	channel = data[0] >> 4;
 
@@ -187,22 +267,12 @@
 	input_sync(idev);
 }
 
-static int ati_remote2_lookup(unsigned int hw_code)
-{
-	int i;
-
-	for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++)
-		if (ati_remote2_key_table[i].hw_code == hw_code)
-			return i;
-
-	return -1;
-}
-
 static void ati_remote2_input_key(struct ati_remote2 *ar2)
 {
 	struct input_dev *idev = ar2->idev;
 	u8 *data = ar2->buf[1];
-	int channel, mode, hw_code, index;
+	u8 channel, mode;
+	int index;
 
 	channel = data[0] >> 4;
 
@@ -218,12 +288,7 @@
 		return;
 	}
 
-	hw_code = data[2];
-	/*
-	 * Mode keys (AUX1-AUX4, PC) all generate the same code byte.
-	 * Use the mode byte to figure out which one was pressed.
-	 */
-	if (hw_code == 0x3f) {
+	if (data[2] == 0x3f) {
 		/*
 		 * For some incomprehensible reason the mouse pad generates
 		 * events which look identical to the events from the last
@@ -236,14 +301,12 @@
 
 		if (data[1] == 0)
 			ar2->mode = mode;
-
-		hw_code |= mode << 8;
 	}
 
 	if (!((1 << mode) & mode_mask))
 		return;
 
-	index = ati_remote2_lookup(hw_code);
+	index = ati_remote2_lookup(data[2]);
 	if (index < 0) {
 		dev_err(&ar2->intf[1]->dev,
 			"Unknown code byte (%02x %02x %02x %02x)\n",
@@ -260,8 +323,7 @@
 	case 2:	/* repeat */
 
 		/* No repeat for mouse buttons. */
-		if (ati_remote2_key_table[index].key_code == BTN_LEFT ||
-		    ati_remote2_key_table[index].key_code == BTN_RIGHT)
+		if (data[2] == 0xa9 || data[2] == 0xaa)
 			return;
 
 		if (!time_after_eq(jiffies, ar2->jiffies))
@@ -276,7 +338,7 @@
 		return;
 	}
 
-	input_event(idev, EV_KEY, ati_remote2_key_table[index].key_code, data[1]);
+	input_event(idev, EV_KEY, ar2->keycode[index][mode], data[1]);
 	input_sync(idev);
 }
 
@@ -334,10 +396,11 @@
 			"%s(): usb_submit_urb() = %d\n", __FUNCTION__, r);
 }
 
+
 static int ati_remote2_input_init(struct ati_remote2 *ar2)
 {
 	struct input_dev *idev;
-	int i, retval;
+	int index, mode, retval;
 
 	idev = input_allocate_device();
 	if (!idev)
@@ -347,11 +410,15 @@
 	input_set_drvdata(idev, ar2);
 
 	idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL);
-	idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
-		BIT_MASK(BTN_RIGHT);
+	idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
 	idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
-	for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++)
-		set_bit(ati_remote2_key_table[i].key_code, idev->keybit);
+
+	for (index = 0; index < ARRAY_SIZE(ati_remote2_keycodes); index++) {
+		for (mode = 0; mode < ARRAY_SIZE(ati_remote2_modes); mode++) {
+			ar2->keycode[index][mode] = ati_remote2_keycodes[index].keycode[mode];
+			set_bit(ar2->keycode[index][mode], idev->keybit);
+		}
+	}
 
 	idev->rep[REP_DELAY]  = 250;
 	idev->rep[REP_PERIOD] = 33;
@@ -359,6 +426,9 @@
 	idev->open = ati_remote2_open;
 	idev->close = ati_remote2_close;
 
+	idev->getkeycode = ati_remote2_getkeycode;
+	idev->setkeycode = ati_remote2_setkeycode;
+
 	idev->name = ar2->name;
 	idev->phys = ar2->phys;
 

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