intel_mid: Keypad Driver (Current snapshot for reference)

index cb29191..c580fcc 100644
@@ -265,3 +265,66 @@ static void __devinit pci_fixed_bar_fixup(struct pci_dev *dev)
 	}
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_fixed_bar_fixup);
+
+/*
+ * The Firmware should program the Langwell keypad registers to indicate
+ * system specific configuration.  This quirk can be removed when firmware
+ * actually does this properly.
+ */
+static void __devinit langwell_keypad_fixup(struct pci_dev *dev)
+{
+	void __iomem *base;
+	u32 val;
+
+	base = pci_ioremap_bar(dev, 0);
+
+	if (base == NULL)
+		return;
+
+	val = readl(base);
+
+	/*
+	 * set the KPC register.  Please see the Langwell Docs
+	 * for more detail.
+	 *
+	 * Bit 31: Reserved
+	 * Bit 30: Automatic Scan Bit
+	 * Bit 29: Automatic Scan on Activity bit
+	 * Bit 28:26 : Matrix keypad row number
+	 *		000 == 1, 001 == 2, ... 111 == 8
+	 * Bit 25:23 : Matrix keypad column number
+	 *		000 ==1, 001 == 2, ... 111 == 8
+	 * Bit 22: Matrix Interrupt Bit
+	 * Bit 21: Ignore Multiple Key Press
+	 * Bit 20: Manual Matrix Scan line 7
+	 * Bit 19: Manual Matrix Scan line 6
+	 * Bit 18: Manual Matrix Scan line 5
+	 * Bit 17: Manual Matrix Scan line 4
+	 * Bit 16: Manual Matrix Scan line 3
+	 * Bit 15: Manual Matrix Scan line 2
+	 * Bit 14: Manual Matrix Scan line 1
+	 * Bit 13: Manual Matrix Scan line 0
+	 * Bit 12: Matrix Keypad Enable
+	 * Bit 11: Matrix Interrupt Enable
+	 * Bit 10:9  : Reserved
+	 * Bit 8:6   : Direct Key Number + Roatry encoder sensor input
+	 *		000 == 1, 001 == 2, ... 111 == 8
+	 * Bit 5: Direct Interrupt bit
+	 * Bit 4: Reserved
+	 * Bit 3: Rotary Encoder 1 enable
+	 * Bit 2: Rotary Encoder 0 enable
+	 * Bit 1: Direct Keypad enable
+	 * Bit 0: Direct Keypad Interrupt enable
+	 */
+	if (val == 0)
+		writel(0x3f9ff800, base);
+
+	val = readl(base + 0x24);
+
+	/* set the debounce interval (KPKDI) to 100ms */
+	if (val == 0)
+		writel(100, base + 0x24);
+
+	iounmap(base);
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0805, langwell_keypad_fixup);

index dea829c..b16c5ae 100644
@@ -21,6 +21,7 @@
 #include <linux/i2c/pca953x.h>
 #include <linux/gpio_keys.h>
 #include <linux/input.h>
+#include <linux/input/intel_mid_keypad.h>
 #include <linux/platform_device.h>
 #include <linux/irq.h>
 #include <linux/module.h>

@@ -809,3 +810,21 @@ static int __init pb_keys_init(void)
 	return 0;
 }
 late_initcall(pb_keys_init);
+
+/*
+ * Mininal initial implementation of the mrst keypad hooks. We need this 
+ * to merge the keypad drivers and can then tweak this for the platforms
+ * that are different
+ */
+
+int mrst_keypad_enabled(void)
+{
+	return 1;
+}
+EXPORT_SYMBOL_GPL(mrst_keypad_enabled);
+
+struct mrst_keypad_platform_data *mrst_keypad_platform_data(void)
+{
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(mrst_keypad_platform_data);

457 lines not on this page · raw message

new file mode 100644
index 0000000..7a41bfc
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2010 Jekyll Lai, Wistron <[email protected]>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <linux/input/matrix_keypad.h>
+
+struct mrst_keypad_platform_data {
+	const struct matrix_keymap_data *keymap_data;
+};
+
+extern int mrst_keypad_enabled(void);
+extern struct mrst_keypad_platform_data *mrst_keypad_platform_data(void);
+