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Diffstat (limited to 'meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-moorestown-keypad-driver.patch')
-rw-r--r--meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-moorestown-keypad-driver.patch839
1 files changed, 839 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-moorestown-keypad-driver.patch b/meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-moorestown-keypad-driver.patch
new file mode 100644
index 000000000..453acc328
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-moorestown-keypad-driver.patch
@@ -0,0 +1,839 @@
+From 3e65e5210bc3c81a58c60e365ee044f2e6044efc Mon Sep 17 00:00:00 2001
+From: Zheng Ba <zheng.ba@intel.com>
+Date: Sun, 22 Nov 2009 16:22:31 +0800
+Subject: [PATCH 047/104] Full keypad controller driver patch for Beta
+
+This patch adds the keypad support for Moorestown platform.
+
+Changes from Alpha2: solved "CRITICAL" issues marked by Klocwork
+ HSD sighting 3469242
+
+Signed-off-by: Zheng Ba <zheng.ba@intel.com>
+---
+ drivers/input/keyboard/Kconfig | 7 +
+ drivers/input/keyboard/Makefile | 1 +
+ drivers/input/keyboard/mrst_keypad.c | 782 ++++++++++++++++++++++++++++++++++
+ 3 files changed, 790 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/input/keyboard/mrst_keypad.c
+
+diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
+index f7a4497..4c2bdaf 100644
+--- a/drivers/input/keyboard/Kconfig
++++ b/drivers/input/keyboard/Kconfig
+@@ -292,6 +292,13 @@ config KEYBOARD_MAX7359
+ To compile this driver as a module, choose M here: the
+ module will be called max7359_keypad.
+
++config KEYBOARD_MRST
++ tristate "MRST keypad support"
++ depends on GPIO_LANGWELL
++ help
++ Say Y if you want to use the mrst keypad
++ depends on GPIO_LANGWELL
++
+ config KEYBOARD_NEWTON
+ tristate "Newton keyboard"
+ select SERIO
+diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
+index 78654ef..0337f76 100644
+--- a/drivers/input/keyboard/Makefile
++++ b/drivers/input/keyboard/Makefile
+@@ -14,6 +14,7 @@ obj-$(CONFIG_KEYBOARD_BFIN) += bf54x-keys.o
+ obj-$(CONFIG_KEYBOARD_CORGI) += corgikbd.o
+ obj-$(CONFIG_KEYBOARD_DAVINCI) += davinci_keyscan.o
+ obj-$(CONFIG_KEYBOARD_EP93XX) += ep93xx_keypad.o
++obj-$(CONFIG_KEYBOARD_MRST) += mrst_keypad.o
+ obj-$(CONFIG_KEYBOARD_GPIO) += gpio_keys.o
+ obj-$(CONFIG_KEYBOARD_HIL) += hil_kbd.o
+ obj-$(CONFIG_KEYBOARD_HIL_OLD) += hilkbd.o
+diff --git a/drivers/input/keyboard/mrst_keypad.c b/drivers/input/keyboard/mrst_keypad.c
+new file mode 100644
+index 0000000..faf3ab7
+--- /dev/null
++++ b/drivers/input/keyboard/mrst_keypad.c
+@@ -0,0 +1,782 @@
++/*
++ * linux/drivers/input/keyboard/mrst_keypad.c
++ *
++ * Driver for the matrix keypad controller on Moorestown platform.
++ *
++ * Copyright (c) 2009 Intel Corporation.
++ * Created: Sep 18, 2008
++ * Updated: Apr 24, 2009
++ *
++ * Based on pxa27x_keypad.c by Rodolfo Giometti <giometti@linux.it>
++ * pxa27x_keypad.c is based on a previous implementation by Kevin O'Connor
++ * <kevin_at_keconnor.net> and Alex Osborne <bobofdoom@gmail.com> and
++ * on some suggestions by Nicolas Pitre <nico@cam.org>
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms and conditions of the GNU General Public License,
++ * version 2, as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope 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.
++ *
++ */
++
++#define DRV_NAME "mrst_keypad"
++#define DRV_VERSION "0.0.1"
++#define MRST_KEYPAD_DRIVER_NAME DRV_NAME " " DRV_VERSION
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/pci.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/input.h>
++#include <linux/device.h>
++#include <linux/err.h>
++#include <linux/gpio.h>
++
++/*
++ * Keypad Controller registers
++ */
++#define KPC 0x0000 /* Keypad Control register */
++#define KPDK 0x0004 /* Keypad Direct Key register */
++#define KPREC 0x0008 /* Keypad Rotary Encoder register */
++#define KPMK 0x000C /* Keypad Matrix Key register */
++#define KPAS 0x0010 /* Keypad Automatic Scan register */
++
++/* Keypad Automatic Scan Multiple Key Presser register 0-3 */
++#define KPASMKP0 0x0014
++#define KPASMKP1 0x0018
++#define KPASMKP2 0x001C
++#define KPASMKP3 0x0020
++#define KPKDI 0x0024
++
++/* bit definitions */
++#define KPC_MKRN(n) ((((n) - 1) & 0x7) << 26) /* matrix key row number */
++#define KPC_MKCN(n) ((((n) - 1) & 0x7) << 23) /* matrix key col number */
++#define KPC_DKN(n) ((((n) - 1) & 0x7) << 6) /* direct key number */
++
++#define KPC_AS (0x1 << 30) /* Automatic Scan bit */
++#define KPC_ASACT (0x1 << 29) /* Automatic Scan on Activity */
++#define KPC_MI (0x1 << 22) /* Matrix interrupt bit */
++#define KPC_IMKP (0x1 << 21) /* Ignore Multiple Key Press */
++
++#define KPC_MS(n) (0x1 << (13 + (n))) /* Matrix scan line 'n' */
++#define KPC_MS_ALL (0xff << 13)
++
++#define KPC_ME (0x1 << 12) /* Matrix Keypad Enable */
++#define KPC_MIE (0x1 << 11) /* Matrix Interrupt Enable */
++#define KPC_DK_DEB_SEL (0x1 << 9) /* Direct Keypad Debounce Select */
++#define KPC_DI (0x1 << 5) /* Direct key interrupt bit */
++#define KPC_RE_ZERO_DEB (0x1 << 4) /* Rotary Encoder Zero Debounce */
++#define KPC_REE1 (0x1 << 3) /* Rotary Encoder1 Enable */
++#define KPC_REE0 (0x1 << 2) /* Rotary Encoder0 Enable */
++#define KPC_DE (0x1 << 1) /* Direct Keypad Enable */
++#define KPC_DIE (0x1 << 0) /* Direct Keypad interrupt Enable */
++
++#define KPDK_DKP (0x1 << 31)
++#define KPDK_DK(n) ((n) & 0xff)
++
++#define KPREC_OF1 (0x1 << 31)
++#define kPREC_UF1 (0x1 << 30)
++#define KPREC_OF0 (0x1 << 15)
++#define KPREC_UF0 (0x1 << 14)
++
++#define KPREC_RECOUNT0(n) ((n) & 0xff)
++#define KPREC_RECOUNT1(n) (((n) >> 16) & 0xff)
++
++#define KPMK_MKP (0x1 << 31)
++#define KPAS_SO (0x1 << 31)
++#define KPASMKPx_SO (0x1 << 31)
++
++#define KPAS_MUKP(n) (((n) >> 26) & 0x1f)
++#define KPAS_RP(n) (((n) >> 4) & 0xf)
++#define KPAS_CP(n) ((n) & 0xf)
++
++#define KPASMKP_MKC_MASK (0xff)
++
++#define KEYPAD_MATRIX_GPIO_IN_PIN 24
++#define KEYPAD_MATRIX_GPIO_OUT_PIN 32
++#define KEYPAD_DIRECT_GPIO_IN_PIN 40
++
++
++static struct pci_device_id keypad_pci_tbl[] = {
++ {0x8086, 0x0805, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
++ {0,}
++};
++MODULE_DEVICE_TABLE(pci, keypad_pci_tbl);
++
++#define keypad_readl(off) readl(keypad->mmio_base + (off))
++#define keypad_writel(off, v) writel((v), keypad->mmio_base + (off))
++
++#define MAX_MATRIX_KEY_NUM (8 * 8)
++#define MAX_DIRECT_KEY_NUM (4)
++
++#define MAX_MATRIX_KEY_ROWS (8)
++#define MAX_MATRIX_KEY_COLS (8)
++#define DEBOUNCE_INTERVAL 100
++
++#define KEY_HALFSHUTTER KEY_PROG1
++#define KEY_FULLSHUTTER KEY_CAMERA
++
++static unsigned int mrst_keycode[MAX_MATRIX_KEY_NUM] = {
++ KEY_F, KEY_D, KEY_E, KEY_GRAVE, KEY_C, KEY_R, KEY_4, KEY_V,
++ KEY_NUMLOCK, KEY_LEFTCTRL, KEY_Z, KEY_W, KEY_2, KEY_X, KEY_S, KEY_3,
++ KEY_EQUAL, KEY_N, KEY_H, KEY_U, KEY_7, KEY_M, KEY_J, KEY_8,
++ KEY_6, KEY_5, KEY_APOSTROPHE, KEY_G, KEY_T, KEY_SPACE, KEY_B, KEY_Y,
++ KEY_MINUS, KEY_0, KEY_LEFT, KEY_SEMICOLON, KEY_P, KEY_DOWN, KEY_UP,
++ KEY_BACKSPACE,
++ KEY_L, KEY_K, KEY_I, KEY_SLASH, KEY_COMMA, KEY_O, KEY_9, KEY_DOT,
++ KEY_Q, KEY_TAB, KEY_ESC, KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_1, KEY_FN,
++ KEY_A,
++ 0, KEY_RIGHTSHIFT, KEY_ENTER, 0, KEY_RIGHT, 0, 0, 0,
++};
++
++/* NumLk key mapping */
++static unsigned int mrst_keycode_numlck[MAX_MATRIX_KEY_NUM] = {
++ KEY_F, KEY_D, KEY_E, KEY_GRAVE, KEY_C, KEY_R, KEY_4, KEY_V,
++ KEY_NUMLOCK, KEY_LEFTCTRL, KEY_Z, KEY_W, KEY_2, KEY_X, KEY_S, KEY_3,
++ KEY_EQUAL, KEY_N, KEY_H, KEY_KP4, KEY_KP7, KEY_KP0, KEY_KP1, KEY_KP8,
++ KEY_6, KEY_5, KEY_APOSTROPHE, KEY_G, KEY_T, KEY_SPACE, KEY_B, KEY_Y,
++ KEY_MINUS, KEY_KPSLASH, KEY_LEFT, KEY_KPMINUS, KEY_KPASTERISK,
++ KEY_DOWN, KEY_UP, KEY_BACKSPACE,
++ KEY_KP3, KEY_KP2, KEY_KP5, KEY_SLASH, KEY_KPDOT, KEY_KP6, KEY_KP9,
++ KEY_KPPLUS,
++ KEY_Q, KEY_TAB, KEY_ESC, KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_1, KEY_FN,
++ KEY_A,
++ 0, KEY_RIGHTSHIFT, KEY_ENTER, 0, KEY_RIGHT, 0, 0, 0,
++};
++
++/* Fn key mapping */
++static unsigned int mrst_keycode_fn[MAX_MATRIX_KEY_NUM] = {
++ 0, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, 0, 0, 0, 0, 0, 0,
++ KEY_LEFTBRACE, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, 0, 0, 0, 0, 0, 0,
++ 0, 0, KEY_HOME, 0, 0, KEY_PAGEDOWN, KEY_PAGEUP, 0,
++ 0, 0, 0, KEY_RIGHTBRACE, KEY_LEFTBRACE, 0, 0, KEY_RIGHTBRACE,
++ 0, 0, 0, KEY_LEFTSHIFT, 0, 0, KEY_FN, 0,
++ 0, KEY_RIGHTSHIFT, 0, 0, KEY_END, 0, 0, 0,
++};
++
++/* direct key map */
++static unsigned int mrst_direct_keycode[MAX_DIRECT_KEY_NUM] = {
++ KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_HALFSHUTTER, KEY_FULLSHUTTER,
++};
++
++struct mrst_keypad {
++
++ struct input_dev *input_dev;
++ void __iomem *mmio_base;
++
++ unsigned int matrix_key_rows;
++ unsigned int matrix_key_cols;
++ int matrix_key_map_size;
++
++ /* key debounce interval */
++ unsigned int debounce_interval;
++
++ /* matrix key code map */
++ unsigned int matrix_keycodes[MAX_MATRIX_KEY_NUM];
++
++ /* state row bits of each column scan */
++ uint32_t matrix_key_state[MAX_MATRIX_KEY_COLS];
++ uint32_t direct_key_state;
++
++ unsigned int direct_key_mask;
++
++ int direct_key_num;
++
++ unsigned int direct_key_map[MAX_DIRECT_KEY_NUM];
++
++ /* rotary encoders 0 */
++ int enable_rotary0;
++ int rotary0_rel_code;
++ int rotary0_up_key;
++ int rotary0_down_key;
++
++ /* rotary encoders 1 */
++ int enable_rotary1;
++ int rotary1_rel_code;
++ int rotary1_up_key;
++ int rotary1_down_key;
++
++ int rotary_rel_code[2];
++ int rotary_up_key[2];
++ int rotary_down_key[2];
++
++ /* Fn key */
++ int fn;
++
++ /* Number Lock key */
++ int numlck;
++
++ /* FIXME:
++ * Keypad controller likely issues fake interrupts
++ * when direct key status registers were first initialized
++ * This value assures this interrupt will not be proceeded.
++ */
++ int count;
++};
++
++static void mrst_keypad_build_keycode(struct mrst_keypad *keypad)
++{
++ struct input_dev *input_dev = keypad->input_dev;
++ unsigned int *key;
++ int i, code;
++
++ keypad->matrix_key_rows = MAX_MATRIX_KEY_ROWS;
++ keypad->matrix_key_cols = MAX_MATRIX_KEY_COLS;
++ keypad->matrix_key_map_size = MAX_MATRIX_KEY_NUM;
++ keypad->debounce_interval = DEBOUNCE_INTERVAL;
++
++ /* three sets of keycode here */
++ if (keypad->fn)
++ memcpy(keypad->matrix_keycodes, mrst_keycode_fn,
++ sizeof(keypad->matrix_keycodes));
++ else if (keypad->numlck)
++ memcpy(keypad->matrix_keycodes, mrst_keycode_numlck,
++ sizeof(keypad->matrix_keycodes));
++ else
++ memcpy(keypad->matrix_keycodes, mrst_keycode,
++ sizeof(keypad->matrix_keycodes));
++
++ memcpy(keypad->direct_key_map, mrst_direct_keycode,
++ sizeof(keypad->direct_key_map));
++
++ key = &keypad->matrix_keycodes[0];
++ for (i = 0; i < MAX_MATRIX_KEY_NUM; i++, key++) {
++ code = (*key) & 0xffffff;
++ set_bit(code, input_dev->keybit);
++ }
++
++ key = &keypad->direct_key_map[0];
++ for (i = 0; i < MAX_DIRECT_KEY_NUM; i++, key++) {
++ code = (*key) & 0xffffff;
++ set_bit(code, input_dev->keybit);
++ }
++
++ keypad->direct_key_num = MAX_DIRECT_KEY_NUM;
++ keypad->enable_rotary0 = 0;
++ keypad->enable_rotary1 = 0;
++
++}
++
++static inline unsigned int lookup_matrix_keycode(
++ struct mrst_keypad *keypad, int row, int col)
++{
++ return keypad->matrix_keycodes[(row << 3) + col];
++}
++
++static void handle_constant_keypress(struct mrst_keypad *keypad,
++ int num, int col, int row,
++ int state)
++{
++ struct input_dev *dev = keypad->input_dev;
++
++ switch (num) {
++ case 0:
++ if (keypad->fn)
++ keypad->fn = 0;
++ /* Manually release special keys (Fn combinations) */
++ if (test_bit(KEY_LEFTBRACE, dev->key))
++ input_report_key(dev, KEY_LEFTBRACE, 0);
++ if (test_bit(KEY_RIGHTBRACE, dev->key))
++ input_report_key(dev, KEY_RIGHTBRACE, 0);
++ if (test_bit(KEY_HOME, dev->key))
++ input_report_key(dev, KEY_RIGHTBRACE, 0);
++ if (test_bit(KEY_END, dev->key))
++ input_report_key(dev, KEY_END, 0);
++ if (test_bit(KEY_PAGEUP, dev->key))
++ input_report_key(dev, KEY_RIGHTBRACE, 0);
++ if (test_bit(KEY_PAGEDOWN, dev->key))
++ input_report_key(dev, KEY_RIGHTBRACE, 0);
++
++ return;
++
++ case 1:
++ /* if Fn pressed */
++ if (col == 6 && row == 6)
++ keypad->fn = 1;
++ /* key '[' */
++ else if ((col == 0 && row == 2) && state) {
++ keypad->fn = 0;
++ set_bit(KEY_EQUAL, dev->key);
++ dev->repeat_key = KEY_EQUAL;
++ }
++ /* key ']' */
++ else if ((col == 3 && row == 5) && state) {
++ keypad->fn = 0;
++ set_bit(KEY_SLASH, dev->key);
++ dev->repeat_key = KEY_SLASH;
++ }
++ /* key '{' */
++ else if ((col == 4 && row == 5) && state) {
++ keypad->fn = 0;
++ set_bit(KEY_COMMA, dev->key);
++ dev->repeat_key = KEY_COMMA;
++ }
++ /* key '}' */
++ else if ((col == 7 && row == 5) && state) {
++ keypad->fn = 0;
++ set_bit(KEY_DOT, dev->key);
++ dev->repeat_key = KEY_DOT;
++ }
++
++ return;
++ default:
++ ;
++ }
++}
++
++static void mrst_keypad_scan_matrix(struct mrst_keypad *keypad)
++{
++ int row, col, num_keys_pressed = 0;
++ uint32_t new_state[MAX_MATRIX_KEY_COLS];
++ uint32_t kpas = keypad_readl(KPAS);
++ int status;
++
++ num_keys_pressed = KPAS_MUKP(kpas);
++
++ memset(new_state, 0, sizeof(new_state));
++
++ if (num_keys_pressed == 0) {
++ status = keypad->matrix_key_state[0] & (1 << 0);
++ handle_constant_keypress(keypad, num_keys_pressed, 0, 0,
++ status);
++
++ goto scan;
++ }
++
++ if (num_keys_pressed == 1) {
++ col = KPAS_CP(kpas);
++ row = KPAS_RP(kpas);
++
++ /* if invalid row/col, treat as no key pressed */
++ if (col < MAX_MATRIX_KEY_COLS &&
++ row < MAX_MATRIX_KEY_ROWS) {
++
++ /* if NumLk pressed */
++ if (col == 0 && row == 1)
++ keypad->numlck = !keypad->numlck;
++
++ status = keypad->matrix_key_state[col] & (1 << row);
++ handle_constant_keypress(keypad, num_keys_pressed, col,
++ row, status);
++
++ new_state[col] = (1 << row);
++ }
++
++ goto scan;
++ }
++
++ if (num_keys_pressed > 1) {
++ uint32_t kpasmkp0 = keypad_readl(KPASMKP0);
++ uint32_t kpasmkp1 = keypad_readl(KPASMKP1);
++ uint32_t kpasmkp2 = keypad_readl(KPASMKP2);
++ uint32_t kpasmkp3 = keypad_readl(KPASMKP3);
++
++ new_state[0] = kpasmkp0 & KPASMKP_MKC_MASK;
++ new_state[1] = (kpasmkp0 >> 16) & KPASMKP_MKC_MASK;
++ new_state[2] = kpasmkp1 & KPASMKP_MKC_MASK;
++ new_state[3] = (kpasmkp1 >> 16) & KPASMKP_MKC_MASK;
++ new_state[4] = kpasmkp2 & KPASMKP_MKC_MASK;
++ new_state[5] = (kpasmkp2 >> 16) & KPASMKP_MKC_MASK;
++ new_state[6] = kpasmkp3 & KPASMKP_MKC_MASK;
++ new_state[7] = (kpasmkp3 >> 16) & KPASMKP_MKC_MASK;
++
++ /* if Fn is pressed, all SHIFT is ignored, except when {
++ * or } is pressed */
++ if (new_state[6] & 0x40) {
++ keypad->fn = 1;
++ new_state[3] &= ~0x40;
++ new_state[1] &= ~0x80;
++ }
++
++ if (keypad->fn == 1) {
++ /* if { or } pressed */
++ if ((new_state[4] & 0x20) || (new_state[7] & 0x20)) {
++ /* as if LEFTSHIFT is pressed */
++ new_state[3] |= 0x40;
++ /* as if Fn not pressed */
++ new_state[6] &= ~0x40;
++ }
++ /* if [ or ] pressed */
++ if ((new_state[0] & 0x04) || (new_state[3] & 0x20))
++ /* as if Fn not pressed */
++ new_state[6] &= ~0x40;
++ }
++ }
++
++
++scan:
++ /* re-build keycode */
++ mrst_keypad_build_keycode(keypad);
++
++ for (col = 0; col < keypad->matrix_key_cols; col++) {
++ uint32_t bits_changed;
++
++ bits_changed = keypad->matrix_key_state[col] ^ new_state[col];
++ if (bits_changed == 0)
++ continue;
++
++ for (row = 0; row < keypad->matrix_key_rows; row++) {
++ if ((bits_changed & (1 << row)) == 0)
++ continue;
++
++ input_report_key(keypad->input_dev,
++ lookup_matrix_keycode(keypad, row, col),
++ new_state[col] & (1 << row));
++ }
++ }
++ input_sync(keypad->input_dev);
++ memcpy(keypad->matrix_key_state, new_state, sizeof(new_state));
++}
++
++#define DEFAULT_KPREC (0x007f007f)
++
++static inline int rotary_delta(uint32_t kprec)
++{
++ if (kprec & KPREC_OF0)
++ return (kprec & 0xff) + 0x7f;
++ else if (kprec & KPREC_UF0)
++ return (kprec & 0xff) - 0x7f - 0xff;
++ else
++ return (kprec & 0xff) - 0x7f;
++}
++
++static void report_rotary_event(struct mrst_keypad *keypad, int r, int delta)
++{
++ struct input_dev *dev = keypad->input_dev;
++
++ if (delta == 0)
++ return;
++
++ if (keypad->rotary_up_key[r] && keypad->rotary_down_key[r]) {
++ int keycode = (delta > 0) ? keypad->rotary_up_key[r] :
++ keypad->rotary_down_key[r];
++
++ /* simulate a press-n-release */
++ input_report_key(dev, keycode, 1);
++ input_sync(dev);
++ input_report_key(dev, keycode, 0);
++ input_sync(dev);
++ } else {
++ input_report_rel(dev, keypad->rotary_rel_code[r], delta);
++ input_sync(dev);
++ }
++}
++
++static void mrst_keypad_scan_rotary(struct mrst_keypad *keypad)
++{
++ unsigned int kprec;
++
++ /* read and reset to default count value */
++ kprec = keypad_readl(KPREC);
++ keypad_writel(KPREC, DEFAULT_KPREC);
++
++ if (keypad->enable_rotary0)
++ report_rotary_event(keypad, 0, rotary_delta(kprec));
++
++ if (keypad->enable_rotary1)
++ report_rotary_event(keypad, 1, rotary_delta(kprec >> 16));
++}
++
++static void mrst_keypad_scan_direct(struct mrst_keypad *keypad)
++{
++ unsigned int new_state;
++ uint32_t kpdk, bits_changed;
++ int i;
++
++ kpdk = keypad_readl(KPDK);
++
++ if (keypad->enable_rotary0 || keypad->enable_rotary1)
++ mrst_keypad_scan_rotary(keypad);
++
++ if ((keypad->direct_key_map == NULL) || (++keypad->count == 1)) {
++ keypad->direct_key_state = 0;
++ return;
++ }
++
++ new_state = KPDK_DK(kpdk) & keypad->direct_key_mask;
++ new_state = ~new_state;
++ bits_changed = keypad->direct_key_state ^ new_state;
++
++ if (bits_changed == 0)
++ return;
++
++ for (i = 0; i < keypad->direct_key_num; i++) {
++ if (bits_changed & (1 << i)) {
++ input_report_key(keypad->input_dev,
++ keypad->direct_key_map[i],
++ (new_state & (1 << i)));
++ }
++ }
++ input_sync(keypad->input_dev);
++ keypad->direct_key_state = new_state;
++
++}
++
++static irqreturn_t mrst_keypad_irq_handler(int irq, void *dev_id)
++{
++ struct mrst_keypad *keypad = dev_id;
++ unsigned long kpc = keypad_readl(KPC);
++
++ if (kpc & KPC_DI)
++ mrst_keypad_scan_direct(keypad);
++
++ if (kpc & KPC_MI)
++ mrst_keypad_scan_matrix(keypad);
++
++ return IRQ_HANDLED;
++}
++
++static int mrst_keypad_gpio_init(void)
++{
++ int i, err, cnt = 0;
++ int pins = KEYPAD_MATRIX_GPIO_IN_PIN + MAX_MATRIX_KEY_ROWS +
++ MAX_MATRIX_KEY_COLS + MAX_DIRECT_KEY_NUM;
++
++ /* explicitely tell which pins have been occupied... */
++ for (i = KEYPAD_MATRIX_GPIO_IN_PIN; i < pins; i++, cnt++) {
++ err = gpio_request(i, NULL);
++ if (err) {
++ printk(KERN_ERR "GPIO pin %d failed to request.\n", i);
++ goto err_request;
++ }
++ }
++
++ for (i = 0; i < MAX_MATRIX_KEY_ROWS; i++)
++ gpio_direction_input(KEYPAD_MATRIX_GPIO_IN_PIN + i);
++
++ for (i = 0; i < MAX_MATRIX_KEY_COLS; i++)
++ /* __gpio_set_value(KEYPAD_GPIO_OUT_PIN + i, 1); */
++ /* set action is executed in gpio_direction_output() */
++ gpio_direction_output(KEYPAD_MATRIX_GPIO_OUT_PIN + i, 1);
++
++ for (i = 0; i < MAX_DIRECT_KEY_NUM; i++)
++ gpio_direction_input(KEYPAD_DIRECT_GPIO_IN_PIN + i);
++
++ return 0;
++
++err_request:
++ /* free requested pins... */
++ for (i = KEYPAD_MATRIX_GPIO_IN_PIN + cnt - 1;
++ i >= KEYPAD_MATRIX_GPIO_IN_PIN; i--)
++ gpio_free(i);
++ return err;
++}
++
++static void mrst_keypad_config(struct mrst_keypad *keypad)
++{
++ unsigned int mask = 0, direct_key_num = 0;
++ unsigned long kpc = 0;
++
++ /* enable matrix keys with automatic scan */
++ if (keypad->matrix_key_rows && keypad->matrix_key_cols) {
++ kpc |= KPC_ASACT | KPC_MIE | KPC_ME | KPC_MS_ALL;
++ kpc |= KPC_MKRN(keypad->matrix_key_rows) |
++ KPC_MKCN(keypad->matrix_key_cols);
++ }
++
++ /* enable rotary key, debounce interval same as direct keys */
++ if (keypad->enable_rotary0) {
++ mask |= 0x03;
++ direct_key_num = 2;
++ kpc |= KPC_REE0;
++ }
++
++ if (keypad->enable_rotary1) {
++ mask |= 0x0c;
++ direct_key_num = 4;
++ kpc |= KPC_REE1;
++ }
++
++ if (keypad->direct_key_num > direct_key_num)
++ direct_key_num = keypad->direct_key_num;
++
++ keypad->direct_key_mask = ((2 << direct_key_num) - 1) & ~mask;
++
++ /* enable direct key */
++ if (direct_key_num)
++ kpc |= KPC_DE | KPC_DIE | KPC_DKN(direct_key_num);
++
++ keypad_writel(KPC, kpc);
++ keypad_writel(KPREC, DEFAULT_KPREC);
++ keypad_writel(KPKDI, keypad->debounce_interval);
++}
++
++static int mrst_keypad_open(struct input_dev *dev)
++{
++ struct mrst_keypad *keypad = input_get_drvdata(dev);
++ int err;
++
++ err = mrst_keypad_gpio_init();
++ if (err)
++ return err;
++ mrst_keypad_config(keypad);
++
++ return 0;
++}
++
++static void mrst_keypad_close(struct input_dev *dev)
++{
++ int pins = KEYPAD_MATRIX_GPIO_IN_PIN + MAX_MATRIX_KEY_ROWS +
++ MAX_MATRIX_KEY_COLS + MAX_DIRECT_KEY_NUM;
++
++ int i;
++ /* free occupied pins */
++ for (i = KEYPAD_MATRIX_GPIO_IN_PIN; i < pins; i++)
++ gpio_free(i);
++}
++
++static int __devinit mrst_keypad_probe(struct pci_dev *pdev,
++ const struct pci_device_id *ent)
++{
++ struct mrst_keypad *keypad;
++ struct input_dev *input_dev;
++ int error;
++
++#ifndef MODULE
++ printk(KERN_INFO MRST_KEYPAD_DRIVER_NAME "\n");
++#endif
++
++ keypad = kzalloc(sizeof(struct mrst_keypad), GFP_KERNEL);
++ if (keypad == NULL) {
++ dev_err(&pdev->dev, "failed to allocate driver data\n");
++ return -ENOMEM;
++ }
++
++ error = pci_enable_device(pdev);
++ if (error || (pdev->irq < 0)) {
++ dev_err(&pdev->dev, "failed to enable device/get irq\n");
++ error = -ENXIO;
++ goto failed_free;
++ }
++
++ error = pci_request_regions(pdev, DRV_NAME);
++ if (error) {
++ dev_err(&pdev->dev, "failed to request I/O memory\n");
++ goto failed_free;
++ }
++
++ keypad->mmio_base = ioremap(pci_resource_start(pdev, 0),
++ pci_resource_len(pdev, 0));
++ if (keypad->mmio_base == NULL) {
++ dev_err(&pdev->dev, "failed to remap I/O memory\n");
++ error = -ENXIO;
++ goto failed_free_mem;
++ }
++
++ /* Create and register the input driver. */
++ input_dev = input_allocate_device();
++ if (!input_dev) {
++ dev_err(&pdev->dev, "failed to allocate input device\n");
++ error = -ENOMEM;
++ goto failed_free_io;
++ }
++
++ input_dev->name = pci_name(pdev);
++ input_dev->id.bustype = BUS_PCI;
++ input_dev->open = mrst_keypad_open;
++ input_dev->close = mrst_keypad_close;
++ input_dev->dev.parent = &pdev->dev;
++
++ input_dev->keycode = keypad->matrix_keycodes;
++ input_dev->keycodesize = sizeof(unsigned int);
++ input_dev->keycodemax = ARRAY_SIZE(mrst_keycode);
++
++ keypad->input_dev = input_dev;
++ keypad->fn = 0;
++ keypad->numlck = 0;
++ /*FIXME*/keypad->count = 0;
++ input_set_drvdata(input_dev, keypad);
++
++ input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
++ BIT_MASK(EV_REL);
++
++ mrst_keypad_build_keycode(keypad);
++ pci_set_drvdata(pdev, keypad);
++
++ error = request_irq(pdev->irq, mrst_keypad_irq_handler, IRQF_SHARED,
++ pci_name(pdev), keypad);
++ if (error) {
++ dev_err(&pdev->dev, "failed to request IRQ\n");
++ goto failed_free_dev;
++ }
++
++ /* Register the input device */
++ error = input_register_device(input_dev);
++ if (error) {
++ dev_err(&pdev->dev, "failed to register input device\n");
++ goto failed_free_irq;
++ }
++
++ printk(KERN_INFO "*** keypad driver load successfully ***\n");
++ return 0;
++
++failed_free_irq:
++ free_irq(pdev->irq, keypad);
++ pci_set_drvdata(pdev, NULL);
++failed_free_dev:
++ input_free_device(input_dev);
++failed_free_io:
++ iounmap(keypad->mmio_base);
++failed_free_mem:
++ pci_release_regions(pdev);
++failed_free:
++ kfree(keypad);
++ return error;
++}
++
++static void __devexit mrst_keypad_remove(struct pci_dev *pdev)
++{
++ struct mrst_keypad *keypad = pci_get_drvdata(pdev);
++ int i;
++ int pins = KEYPAD_MATRIX_GPIO_IN_PIN + MAX_MATRIX_KEY_ROWS +
++ MAX_MATRIX_KEY_COLS + MAX_DIRECT_KEY_NUM;
++
++ for (i = pins - 1; i > KEYPAD_MATRIX_GPIO_IN_PIN; i--)
++ gpio_free(i);
++
++ free_irq(pdev->irq, keypad);
++ input_unregister_device(keypad->input_dev);
++ iounmap(keypad->mmio_base);
++ pci_release_regions(pdev);
++ pci_set_drvdata(pdev, NULL);
++ kfree(keypad);
++}
++
++
++static struct pci_driver mrst_keypad_driver = {
++ .name = DRV_NAME,
++ .id_table = keypad_pci_tbl,
++ .probe = mrst_keypad_probe,
++ .remove = __devexit_p(mrst_keypad_remove),
++#ifdef CONFIG_PM
++ .suspend = NULL,
++ .resume = NULL,
++#endif /* CONFIG_PM */
++};
++
++static int __init mrst_keypad_init(void)
++{
++ return pci_register_driver(&mrst_keypad_driver);
++}
++
++static void __exit mrst_keypad_exit(void)
++{
++ pci_unregister_driver(&mrst_keypad_driver);
++}
++
++module_init(mrst_keypad_init);
++module_exit(mrst_keypad_exit);
++
++MODULE_DESCRIPTION("MRST Keypad Controller Driver");
++MODULE_LICENSE("GPL v2");
+--
+1.6.2.5
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-10 03:35:53 +0000