Re: [patch 2/2] Add a driver for the Winbond WPCD376I Consumer IR hardware
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2009-08-13 06:58:33
Also in:
lkml
Hi David, On Sun, Aug 09, 2009 at 11:56:47AM +0200, david@hardeman.nu wrote:
quoted hunk ↗ jump to hunk
+config INPUT_WINBOND_CIR + tristate "Winbond IR remote control" + depends on X86 && ACPI + select LEDS_CLASS + select BITREVERSE + help + Say Y here if you want to use the IR remote functionality found + in some Winbond SuperI/O chips. Currently only the WPCD376I + chip is supported (included in some Intel Media series motherboards). + + IR Receive and wake-on-IR from suspend and power-off is currently + supported. + + To compile this driver as a module, choose M here: the module will be + called winbond_cir. + config HP_SDC_RTC tristate "HP SDC Real Time Clock" depends on (GSC || HP300) && SERIO Index: linux-2.6/drivers/input/misc/Makefile ===================================================================--- linux-2.6.orig/drivers/input/misc/Makefile 2009-07-25 21:18:57.000000000 +0200 +++ linux-2.6/drivers/input/misc/Makefile 2009-07-25 21:19:28.000000000 +0200@@ -19,6 +19,7 @@ obj-$(CONFIG_INPUT_PCSPKR) += pcspkr.o obj-$(CONFIG_INPUT_POWERMATE) += powermate.o obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o +obj-$(CONFIG_INPUT_WINBOND_CIR) += winbond-cir.o obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o obj-$(CONFIG_INPUT_SPARCSPKR) += sparcspkr.o
Please keep Makefile sorted alphabetically.
quoted hunk ↗ jump to hunk
Index: linux-2.6/drivers/input/misc/winbond-cir.c ===================================================================--- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ linux-2.6/drivers/input/misc/winbond-cir.c 2009-07-25 21:19:28.000000000 +0200@@ -0,0 +1,1644 @@ +/* + * winbond-cir.c - Driver for the Consumer IR functionality of Winbond + * SuperI/O chips. + * + * Currently supports the Winbond WPCD376i chip (PNP id WEC1022), but + * could probably support others (Winbond WEC102X, NatSemi, etc) + * with minor modifications. + * + * Original Author: David Härdeman <david@hardeman.nu> + * Copyright (C) 2009 David Härdeman <david@hardeman.nu> + * + * Dedicated to Matilda, my newborn daughter, without whose loving attention + * this driver would have been finished in half the time and with a fraction + * of the bugs. + * + * Written using: + * o Winbond WPCD376I datasheet helpfully provided by Jesse Barnes at Intel + * o NatSemi PC87338/PC97338 datasheet (for the serial port stuff) + * o DSDT dumps + * + * Supported features: + * o RC6 + * o Wake-On-CIR functionality + * + * To do: + * o Test NEC and RC5 + * + * Left as an exercise for the reader: + * o Learning (I have neither the hardware, nor the need) + * o IR Transmit (ibid) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/module.h> +#include <linux/pnp.h> +#include <linux/interrupt.h> +#include <linux/timer.h> +#include <linux/input.h> +#include <linux/leds.h> +#include <linux/list.h> +#include <linux/spinlock.h> +#include <linux/pci_ids.h> +#include <linux/io.h> +#include <linux/bitrev.h> +#include <linux/bitops.h> + +#define DRVNAME "winbond-cir" + +/* CEIR Wake-Up Registers, relative to data->wbase */ +#define WBCIR_REG_WCEIR_CTL 0x03 /* CEIR Receiver Control */ +#define WBCIR_REG_WCEIR_STS 0x04 /* CEIR Receiver Status */ +#define WBCIR_REG_WCEIR_EV_EN 0x05 /* CEIR Receiver Event Enable */ +#define WBCIR_REG_WCEIR_CNTL 0x06 /* CEIR Receiver Counter Low */ +#define WBCIR_REG_WCEIR_CNTH 0x07 /* CEIR Receiver Counter High */ +#define WBCIR_REG_WCEIR_INDEX 0x08 /* CEIR Receiver Index */ +#define WBCIR_REG_WCEIR_DATA 0x09 /* CEIR Receiver Data */ +#define WBCIR_REG_WCEIR_CSL 0x0A /* CEIR Re. Compare Strlen */ +#define WBCIR_REG_WCEIR_CFG1 0x0B /* CEIR Re. Configuration 1 */ +#define WBCIR_REG_WCEIR_CFG2 0x0C /* CEIR Re. Configuration 2 */ + +/* CEIR Enhanced Functionality Registers, relative to data->ebase */ +#define WBCIR_REG_ECEIR_CTS 0x00 /* Enhanced IR Control Status */ +#define WBCIR_REG_ECEIR_CCTL 0x01 /* Infrared Counter Control */ +#define WBCIR_REG_ECEIR_CNT_LO 0x02 /* Infrared Counter LSB */ +#define WBCIR_REG_ECEIR_CNT_HI 0x03 /* Infrared Counter MSB */ +#define WBCIR_REG_ECEIR_IREM 0x04 /* Infrared Emitter Status */ + +/* SP3 Banked Registers, relative to data->sbase */ +#define WBCIR_REG_SP3_BSR 0x03 /* Bank Select, all banks */ + /* Bank 0 */ +#define WBCIR_REG_SP3_RXDATA 0x00 /* FIFO RX data (r) */ +#define WBCIR_REG_SP3_TXDATA 0x00 /* FIFO TX data (w) */ +#define WBCIR_REG_SP3_IER 0x01 /* Interrupt Enable */ +#define WBCIR_REG_SP3_EIR 0x02 /* Event Identification (r) */ +#define WBCIR_REG_SP3_FCR 0x02 /* FIFO Control (w) */ +#define WBCIR_REG_SP3_MCR 0x04 /* Mode Control */ +#define WBCIR_REG_SP3_LSR 0x05 /* Link Status */ +#define WBCIR_REG_SP3_MSR 0x06 /* Modem Status */ +#define WBCIR_REG_SP3_ASCR 0x07 /* Aux Status and Control */ + /* Bank 2 */ +#define WBCIR_REG_SP3_BGDL 0x00 /* Baud Divisor LSB */ +#define WBCIR_REG_SP3_BGDH 0x01 /* Baud Divisor MSB */ +#define WBCIR_REG_SP3_EXCR1 0x02 /* Extended Control 1 */ +#define WBCIR_REG_SP3_EXCR2 0x04 /* Extended Control 2 */ +#define WBCIR_REG_SP3_TXFLV 0x06 /* TX FIFO Level */ +#define WBCIR_REG_SP3_RXFLV 0x07 /* RX FIFO Level */ + /* Bank 3 */ +#define WBCIR_REG_SP3_MRID 0x00 /* Module Identification */ +#define WBCIR_REG_SP3_SH_LCR 0x01 /* LCR Shadow */ +#define WBCIR_REG_SP3_SH_FCR 0x02 /* FCR Shadow */ + /* Bank 4 */ +#define WBCIR_REG_SP3_IRCR1 0x02 /* Infrared Control 1 */ + /* Bank 5 */ +#define WBCIR_REG_SP3_IRCR2 0x04 /* Infrared Control 2 */ + /* Bank 6 */ +#define WBCIR_REG_SP3_IRCR3 0x00 /* Infrared Control 3 */ +#define WBCIR_REG_SP3_SIR_PW 0x02 /* SIR Pulse Width */ + /* Bank 7 */ +#define WBCIR_REG_SP3_IRRXDC 0x00 /* IR RX Demod Control */ +#define WBCIR_REG_SP3_IRTXMC 0x01 /* IR TX Mod Control */ +#define WBCIR_REG_SP3_RCCFG 0x02 /* CEIR Config */ +#define WBCIR_REG_SP3_IRCFG1 0x04 /* Infrared Config 1 */ +#define WBCIR_REG_SP3_IRCFG4 0x07 /* Infrared Config 4 */ + +/* + * Magic values follow + */ + +/* No interrupts for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */ +#define WBCIR_IRQ_NONE 0x00 +/* RX data bit for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */ +#define WBCIR_IRQ_RX 0x01 +/* Over/Under-flow bit for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */ +#define WBCIR_IRQ_ERR 0x04 +/* Led enable/disable bit for WBCIR_REG_ECEIR_CTS */ +#define WBCIR_LED_ENABLE 0x80 +/* RX data available bit for WBCIR_REG_SP3_LSR */ +#define WBCIR_RX_AVAIL 0x01 +/* RX disable bit for WBCIR_REG_SP3_ASCR */ +#define WBCIR_RX_DISABLE 0x20 +/* Extended mode enable bit for WBCIR_REG_SP3_EXCR1 */ +#define WBCIR_EXT_ENABLE 0x01 +/* Select compare register in WBCIR_REG_WCEIR_INDEX (bits 5 & 6) */ +#define WBCIR_REGSEL_COMPARE 0x10 +/* Select mask register in WBCIR_REG_WCEIR_INDEX (bits 5 & 6) */ +#define WBCIR_REGSEL_MASK 0x20 +/* Starting address of selected register in WBCIR_REG_WCEIR_INDEX */ +#define WBCIR_REG_ADDR0 0x00 + +/* Valid banks for the SP3 UART */ +enum wbcir_bank { + WBCIR_BANK_0 = 0x00, + WBCIR_BANK_1 = 0x80, + WBCIR_BANK_2 = 0xE0, + WBCIR_BANK_3 = 0xE4, + WBCIR_BANK_4 = 0xE8, + WBCIR_BANK_5 = 0xEC, + WBCIR_BANK_6 = 0xF0, + WBCIR_BANK_7 = 0xF4, +}; + +/* Supported IR Protocols */ +enum wbcir_protocol { + IR_PROTOCOL_RC5 = 0x0, + IR_PROTOCOL_NEC = 0x1, + IR_PROTOCOL_RC6 = 0x2, +}; + +/* Misc */ +#define WBCIR_ACPI_NAME "Winbond CIR" +#define WBCIR_ID_FAMILY 0xF1 /* Family ID for the WPCD376I */ +#define WBCIR_ID_CHIP 0x04 /* Chip ID for the WPCD376I */ +#define IR_KEYPRESS_TIMEOUT 250 /* FIXME: should be per-protocol? */ +#define INVALID_SCANCODE 0x7FFFFFFF /* Invalid with all protos */ +#define WAKEUP_IOMEM_LEN 0x10 /* Wake-Up I/O Reg Len */ +#define EHFUNC_IOMEM_LEN 0x10 /* Enhanced Func I/O Reg Len */ +#define SP_IOMEM_LEN 0x08 /* Serial Port 3 (IR) Reg Len */ +#define WBCIR_MAX_IDLE_BYTES 10 + +static DEFINE_SPINLOCK(wbcir_lock); +static DEFINE_RWLOCK(keytable_lock); + +struct wbcir_key { + u32 scancode; + unsigned int keycode; +}; + +struct wbcir_keyentry { + struct wbcir_key key; + struct list_head list; +}; + +static struct wbcir_key rc6_def_keymap[] = { + { 0x800F0400, KEY_0 }, + { 0x800F0401, KEY_1 }, + { 0x800F0402, KEY_2 }, + { 0x800F0403, KEY_3 }, + { 0x800F0404, KEY_4 }, + { 0x800F0405, KEY_5 }, + { 0x800F0406, KEY_6 }, + { 0x800F0407, KEY_7 }, + { 0x800F0408, KEY_8 }, + { 0x800F0409, KEY_9 },
Make these ones KEY_NUMERIC_* as well, this should help users whose keymaps have numbers in upper register normally.
+ { 0x800F041D, KEY_NUMERIC_STAR },
+ { 0x800F041C, KEY_NUMERIC_POUND },
+ { 0x800F0410, KEY_VOLUMEUP },
+ { 0x800F0411, KEY_VOLUMEDOWN },
+ { 0x800F0412, KEY_CHANNELUP },
+ { 0x800F0413, KEY_CHANNELDOWN },
+ { 0x800F040E, KEY_MUTE },
+ { 0x800F040D, KEY_VENDOR }, /* Vista Logo Key */
+ { 0x800F041E, KEY_UP },
+ { 0x800F041F, KEY_DOWN },
+ { 0x800F0420, KEY_LEFT },
+ { 0x800F0421, KEY_RIGHT },
+ { 0x800F0422, KEY_OK },
+ { 0x800F0423, KEY_ESC },
+ { 0x800F040F, KEY_INFO },
+ { 0x800F040A, KEY_CLEAR },
+ { 0x800F040B, KEY_ENTER },
+ { 0x800F045B, KEY_RED },
+ { 0x800F045C, KEY_GREEN },
+ { 0x800F045D, KEY_YELLOW },
+ { 0x800F045E, KEY_BLUE },
+ { 0x800F045A, KEY_TEXT },
+ { 0x800F0427, KEY_SWITCHVIDEOMODE },
+ { 0x800F040C, KEY_POWER },
+ { 0x800F0450, KEY_RADIO },
+ { 0x800F0448, KEY_PVR },
+ { 0x800F0447, KEY_AUDIO },
+ { 0x800F0426, KEY_EPG },
+ { 0x800F0449, KEY_CAMERA },
+ { 0x800F0425, KEY_TV },
+ { 0x800F044A, KEY_VIDEO },
+ { 0x800F0424, KEY_DVD },
+ { 0x800F0416, KEY_PLAY },
+ { 0x800F0418, KEY_PAUSE },
+ { 0x800F0419, KEY_STOP },
+ { 0x800F0414, KEY_FASTFORWARD },
+ { 0x800F041A, KEY_NEXT },
+ { 0x800F041B, KEY_PREVIOUS },
+ { 0x800F0415, KEY_REWIND },
+ { 0x800F0417, KEY_RECORD },Umm, it looks like if you do (code & 0x800F0400) you can switch to standard array-based keymap and won't even need list manipulation.
+};
+
+/* Registers and other state is protected by wbcir_lock */
+struct wbcir_data {
+ unsigned long wbase; /* Wake-Up Baseaddr */
+ unsigned long ebase; /* Enhanced Func. Baseaddr */
+ unsigned long sbase; /* Serial Port Baseaddr */
+ unsigned int irq; /* Serial Port IRQ */
+
+ struct input_dev *input_dev;
+ struct timer_list timer_keyup;
+ struct led_trigger *rxtrigger;
+ struct led_trigger *txtrigger;
+ struct led_classdev led;
+
+ u32 last_scancode;
+ unsigned int last_keycode;
+ u8 last_toggle;
+ u8 keypressed;
+ unsigned long keyup_jiffies;
+ unsigned int idle_count;
+
+ /* RX irdata and parsing state */
+ unsigned long irdata[30];
+ unsigned int irdata_count;
+ unsigned int irdata_idle;
+ unsigned int irdata_off;
+ unsigned int irdata_error;
+
+ /* Protected by keytable_lock */
+ struct list_head keytable;I think this has a potential to deadlock... Set and get keycodes are called with event lock taken, and then your implementations acquire keytable lock. When you emit input events the opposite happens - you take the keytable lock and then input core takes event lock.
+};
+
+static enum wbcir_protocol protocol = IR_PROTOCOL_RC6;
+module_param(protocol, uint, 0444);
+MODULE_PARM_DESC(protocol, "IR protocol to use "
+ "(0 = RC5, 1 = NEC, 2 = RC6A, default)");
+
+static int invert; /* default = 0 */
+module_param(invert, bool, 0444);
+MODULE_PARM_DESC(invert, "Invert the signal from the IR receiver");
+
+static unsigned int wake_sc = 0x800F040C;
+module_param(wake_sc, uint, 0644);
+MODULE_PARM_DESC(wake_sc, "Scancode of the power-on IR command");
+
+static unsigned int wake_rc6mode = 6;
+module_param(wake_rc6mode, uint, 0644);
+MODULE_PARM_DESC(wake_rc6mode, "RC6 mode for the power-on command "
+ "(0 = 0, 6 = 6A, default)");
+
+
+
+/*****************************************************************************
+ *
+ * UTILITY FUNCTIONS
+ *
+ *****************************************************************************/
+
+/* Caller needs to hold wbcir_lock */
+static void
+wbcir_set_bits(unsigned long addr, u8 bits, u8 mask)
+{
+ u8 val;
+
+ val = inb(addr);
+ val = ((val & ~mask) | (bits & mask));
+ outb(val, addr);
+}
+
+/* Selects the register bank for the serial port */
+static inline void
+wbcir_select_bank(struct wbcir_data *data, enum wbcir_bank bank)
+{
+ outb(bank, data->sbase + WBCIR_REG_SP3_BSR);
+}
+
+static enum led_brightness
+wbcir_led_brightness_get(struct led_classdev *led_cdev)
+{
+ struct wbcir_data *data = container_of(led_cdev,
+ struct wbcir_data,
+ led);
+
+ if (inb(data->ebase + WBCIR_REG_ECEIR_CTS) & WBCIR_LED_ENABLE)
+ return LED_FULL;
+ else
+ return LED_OFF;
+}
+
+static void
+wbcir_led_brightness_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct wbcir_data *data = container_of(led_cdev,
+ struct wbcir_data,
+ led);
+
+ wbcir_set_bits(data->ebase + WBCIR_REG_ECEIR_CTS,
+ brightness == LED_OFF ? 0x00 : WBCIR_LED_ENABLE,
+ WBCIR_LED_ENABLE);
+}
+
+/* Manchester encodes bits to RC6 message cells (see wbcir_parse_rc6) */
+static u8
+wbcir_to_rc6cells(u8 val)
+{
+ u8 coded = 0x00;
+ int i;
+
+ val &= 0x0F;
+ for (i = 0; i < 4; i++) {
+ if (val & 0x01)
+ coded |= 0x02 << (i * 2);
+ else
+ coded |= 0x01 << (i * 2);
+ val >>= 1;
+ }
+
+ return coded;
+}
+
+
+
+/*****************************************************************************
+ *
+ * INPUT FUNCTIONS
+ *
+ *****************************************************************************/
+
+static unsigned int
+wbcir_do_getkeycode(struct wbcir_data *data, u32 scancode)
+{
+ struct wbcir_keyentry *keyentry;
+ unsigned int keycode = KEY_RESERVED;
+ unsigned long flags;
+
+ read_lock_irqsave(&keytable_lock, flags);
+
+ list_for_each_entry(keyentry, &data->keytable, list) {
+ if (keyentry->key.scancode == scancode) {
+ keycode = keyentry->key.keycode;
+ break;
+ }
+ }
+
+ read_unlock_irqrestore(&keytable_lock, flags);
+ return keycode;
+}
+
+static int
+wbcir_getkeycode(struct input_dev *dev, int scancode, int *keycode)
+{
+ struct wbcir_data *data = input_get_drvdata(dev);
+
+ *keycode = (int)wbcir_do_getkeycode(data, (u32)scancode);
+ return 0;
+}
+
+static int
+wbcir_setkeycode(struct input_dev *dev, int sscancode, int keycode)
+{
+ struct wbcir_data *data = input_get_drvdata(dev);
+ struct wbcir_keyentry *keyentry;
+ struct wbcir_keyentry *new_keyentry;
+ unsigned long flags;
+ unsigned int old_keycode = KEY_RESERVED;
+ u32 scancode = (u32)sscancode;
+
+ if (keycode < 0 || keycode > KEY_MAX)
+ return -EINVAL;
+
+ new_keyentry = kmalloc(sizeof(*new_keyentry), GFP_KERNEL);
+ if (!new_keyentry)
+ return -ENOMEM;
+
+ write_lock_irqsave(&keytable_lock, flags);
+
+ list_for_each_entry(keyentry, &data->keytable, list) {
+ if (keyentry->key.scancode != scancode)
+ continue;
+
+ old_keycode = keyentry->key.keycode;
+ keyentry->key.keycode = keycode;
+
+ if (keyentry->key.keycode == KEY_RESERVED) {
+ list_del(&keyentry->list);
+ kfree(keyentry);
+ }
+
+ break;
+ }
+
+ set_bit(keycode, dev->keybit);
+
+ if (old_keycode == KEY_RESERVED) {
+ new_keyentry->key.scancode = scancode;
+ new_keyentry->key.keycode = keycode;
+ list_add(&new_keyentry->list, &data->keytable);
+ } else {
+ kfree(new_keyentry);
+ clear_bit(old_keycode, dev->keybit);
+ list_for_each_entry(keyentry, &data->keytable, list) {
+ if (keyentry->key.keycode == old_keycode) {
+ set_bit(old_keycode, dev->keybit);
+ break;
+ }
+ }
+ }
+
+ write_unlock_irqrestore(&keytable_lock, flags);
+ return 0;
+}
+
+/*
+ * Timer function to report keyup event some time after keydown is
+ * reported by the ISR.
+ */
+static void
+wbcir_keyup(unsigned long cookie)
+{
+ struct wbcir_data *data = (struct wbcir_data *)cookie;
+ unsigned long flags;
+
+ /*
+ * data->keyup_jiffies is used to prevent a race condition if a
+ * hardware interrupt occurs at this point and the keyup timer
+ * event is moved further into the future as a result.
+ *
+ * The timer will then be reactivated and this function called
+ * again in the future. We need to exit gracefully in that case
+ * to allow the input subsystem to do its auto-repeat magic or
+ * a keyup event might follow immediately after the keydown.
+ */
+
+ spin_lock_irqsave(&wbcir_lock, flags);
+
+ if (time_is_after_eq_jiffies(data->keyup_jiffies) && data->keypressed) {
+ data->keypressed = 0;
+ led_trigger_event(data->rxtrigger, LED_OFF);
+ input_report_key(data->input_dev, data->last_keycode, 0);
+ input_sync(data->input_dev);
+ }
+
+ spin_unlock_irqrestore(&wbcir_lock, flags);
+}
+
+static void
+wbcir_keydown(struct wbcir_data *data, u32 scancode, u8 toggle)
+{
+ unsigned int keycode;
+
+ /* Repeat? */
+ if (data->last_scancode == scancode &&
+ data->last_toggle == toggle &&
+ data->keypressed)
+ goto set_timer;
+ data->last_scancode = scancode;
+
+ /* Do we need to release an old keypress? */
+ if (data->keypressed) {
+ input_report_key(data->input_dev, data->last_keycode, 0);
+ input_sync(data->input_dev);
+ data->keypressed = 0;
+ }
+
+ /* Do we know this scancode? */
+ keycode = wbcir_do_getkeycode(data, scancode);
+ if (keycode == KEY_RESERVED)
+ goto set_timer;
+
+ /* Register a keypress */
+ input_report_key(data->input_dev, keycode, 1);
+ input_sync(data->input_dev);
+ data->keypressed = 1;
+ data->last_keycode = keycode;
+ data->last_toggle = toggle;
+
+set_timer:
+ led_trigger_event(data->rxtrigger,
+ data->keypressed ? LED_FULL : LED_OFF);
+ data->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
+ mod_timer(&data->timer_keyup, data->keyup_jiffies);
+}
+
+
+
+/*****************************************************************************
+ *
+ * IR PARSING FUNCTIONS
+ *
+ *****************************************************************************/
+
+/* Resets all irdata */
+static void
+wbcir_reset_irdata(struct wbcir_data *data)
+{
+ memset(data->irdata, 0, sizeof(data->irdata));
+ data->irdata_count = 0;
+ data->irdata_off = 0;
+ data->irdata_error = 0;
+}
+
+/* Adds one bit of irdata */
+static void
+add_irdata_bit(struct wbcir_data *data, int set)
+{
+ if (data->irdata_count >= sizeof(data->irdata) * 8) {
+ data->irdata_error = 1;
+ return;
+ }
+
+ if (set)
+ __set_bit(data->irdata_count, data->irdata);
+ data->irdata_count++;
+}
+
+/* Gets count bits of irdata */
+static u16
+get_bits(struct wbcir_data *data, int count)
+{
+ u16 val = 0x0;
+
+ if (data->irdata_count - data->irdata_off < count) {
+ data->irdata_error = 1;
+ return 0x0;
+ }
+
+ while (count > 0) {
+ val <<= 1;
+ if (test_bit(data->irdata_off, data->irdata))
+ val |= 0x1;
+ count--;
+ data->irdata_off++;
+ }
+
+ return val;
+}
+
+/* Reads 16 cells and converts them to a byte */
+static u8
+wbcir_rc6cells_to_byte(struct wbcir_data *data)
+{
+ u16 raw = get_bits(data, 16);
+ u8 val = 0x00;
+ int bit;
+
+ for (bit = 0; bit < 8; bit++) {
+ switch (raw & 0x03) {
+ case 0x01:
+ break;
+ case 0x02:
+ val |= (0x01 << bit);
+ break;
+ default:
+ data->irdata_error = 1;
+ break;
+ }
+ raw >>= 2;
+ }
+
+ return val;
+}
+
+/* Decodes a number of bits from raw RC5 data */
+static u8
+wbcir_get_rc5bits(struct wbcir_data *data, unsigned int count)
+{
+ u16 raw = get_bits(data, count * 2);
+ u8 val = 0x00;
+ int bit;
+
+ for (bit = 0; bit < count; bit++) {
+ switch (raw & 0x03) {
+ case 0x01:
+ val |= (0x01 << bit);
+ break;
+ case 0x02:
+ break;
+ default:
+ data->irdata_error = 1;
+ break;
+ }
+ raw >>= 2;
+ }
+
+ return val;
+}
+
+static void
+wbcir_parse_rc6(struct device *dev, struct wbcir_data *data)
+{
+ /*
+ * Normal bits are manchester coded as follows:
+ * cell0 + cell1 = logic "0"
+ * cell1 + cell0 = logic "1"
+ *
+ * The IR pulse has the following components:
+ *
+ * Leader - 6 * cell1 - discarded
+ * Gap - 2 * cell0 - discarded
+ * Start bit - Normal Coding - always "1"
+ * Mode Bit 2 - 0 - Normal Coding
+ * Toggle bit - Normal Coding with double bit time,
+ * e.g. cell0 + cell0 + cell1 + cell1
+ * means logic "0".
+ *
+ * The rest depends on the mode, the following modes are known:
+ *
+ * MODE 0:
+ * Address Bit 7 - 0 - Normal Coding
+ * Command Bit 7 - 0 - Normal Coding
+ *
+ * MODE 6:
+ * The above Toggle Bit is used as a submode bit, 0 = A, 1 = B.
+ * Submode B is for pointing devices, only remotes using submode A
+ * are supported.
+ *
+ * Customer range bit - 0 => Customer = 7 bits, 0...127
+ * 1 => Customer = 15 bits, 32768...65535
+ * Customer Bits - Normal Coding
+ *
+ * Customer codes are allocated by Philips. The rest of the bits
+ * are customer dependent. The following is commonly used (and the
+ * only supported config):
+ *
+ * Toggle Bit - Normal Coding
+ * Address Bit 6 - 0 - Normal Coding
+ * Command Bit 7 - 0 - Normal Coding
+ *
+ * All modes are followed by at least 6 * cell0.
+ *
+ * MODE 0 msglen:
+ * 1 * 2 (start bit) + 3 * 2 (mode) + 2 * 2 (toggle) +
+ * 8 * 2 (address) + 8 * 2 (command) =
+ * 44 cells
+ *
+ * MODE 6A msglen:
+ * 1 * 2 (start bit) + 3 * 2 (mode) + 2 * 2 (submode) +
+ * 1 * 2 (customer range bit) + 7/15 * 2 (customer bits) +
+ * 1 * 2 (toggle bit) + 7 * 2 (address) + 8 * 2 (command) =
+ * 60 - 76 cells
+ */
+ u8 mode;
+ u8 toggle;
+ u16 customer = 0x0;
+ u8 address;
+ u8 command;
+ u32 scancode;
+
+ /* Leader mark */
+ while (get_bits(data, 1) && !data->irdata_error)
+ /* Do nothing */;
+
+ /* Leader space */
+ if (get_bits(data, 1)) {
+ dev_dbg(dev, "RC6 - Invalid leader space\n");
+ return;
+ }
+
+ /* Start bit */
+ if (get_bits(data, 2) != 0x02) {
+ dev_dbg(dev, "RC6 - Invalid start bit\n");
+ return;
+ }
+
+ /* Mode */
+ mode = get_bits(data, 6);
+ switch (mode) {
+ case 0x15: /* 010101 = b000 */
+ mode = 0;
+ break;
+ case 0x29: /* 101001 = b110 */
+ mode = 6;
+ break;
+ default:
+ dev_dbg(dev, "RC6 - Invalid mode\n");
+ return;
+ }
+
+ /* Toggle bit / Submode bit */
+ toggle = get_bits(data, 4);
+ switch (toggle) {
+ case 0x03:
+ toggle = 0;
+ break;
+ case 0x0C:
+ toggle = 1;
+ break;
+ default:
+ dev_dbg(dev, "RC6 - Toggle bit error\n");
+ break;
+ }
+
+ /* Customer */
+ if (mode == 6) {
+ if (toggle != 0) {
+ dev_dbg(dev, "RC6B - Not Supported\n");
+ return;
+ }
+
+ customer = wbcir_rc6cells_to_byte(data);
+
+ if (customer & 0x80) {
+ /* 15 bit customer value */
+ customer <<= 8;
+ customer |= wbcir_rc6cells_to_byte(data);
+ }
+ }
+
+ /* Address */
+ address = wbcir_rc6cells_to_byte(data);
+ if (mode == 6) {
+ toggle = address >> 7;
+ address &= 0x7F;
+ }
+
+ /* Command */
+ command = wbcir_rc6cells_to_byte(data);
+
+ /* Create scancode */
+ scancode = command;
+ scancode |= address << 8;
+ scancode |= customer << 16;
+
+ /* Last sanity check */
+ if (data->irdata_error) {
+ dev_dbg(dev, "RC6 - Cell error(s)\n");
+ return;
+ }
+
+ dev_dbg(dev, "IR-RC6 ad 0x%02X cm 0x%02X cu 0x%04X "
+ "toggle %u mode %u scan 0x%08X\n",
+ address,
+ command,
+ customer,
+ (unsigned int)toggle,
+ (unsigned int)mode,
+ scancode);
+
+ wbcir_keydown(data, scancode, toggle);
+}
+
+static void
+wbcir_parse_rc5(struct device *dev, struct wbcir_data *data)
+{
+ /*
+ * Bits are manchester coded as follows:
+ * cell1 + cell0 = logic "0"
+ * cell0 + cell1 = logic "1"
+ * (i.e. the reverse of RC6)
+ *
+ * Start bit 1 - "1" - discarded
+ * Start bit 2 - Must be inverted to get command bit 6
+ * Toggle bit
+ * Address Bit 4 - 0
+ * Command Bit 5 - 0
+ */
+ u8 toggle;
+ u8 address;
+ u8 command;
+ u32 scancode;
+
+ /* Start bit 1 */
+ if (!get_bits(data, 1)) {
+ dev_dbg(dev, "RC5 - Invalid start bit\n");
+ return;
+ }
+
+ /* Start bit 2 */
+ if (!wbcir_get_rc5bits(data, 1))
+ command = 0x40;
+ else
+ command = 0x00;
+
+ toggle = wbcir_get_rc5bits(data, 1);
+ address = wbcir_get_rc5bits(data, 5);
+ command |= wbcir_get_rc5bits(data, 6);
+ scancode = address << 7 | command;
+
+ /* Last sanity check */
+ if (data->irdata_error) {
+ dev_dbg(dev, "RC5 - Invalid message\n");
+ return;
+ }
+
+ dev_dbg(dev, "IR-RC5 ad %u cm %u t %u s %u\n",
+ (unsigned int)address,
+ (unsigned int)command,
+ (unsigned int)toggle,
+ (unsigned int)scancode);
+
+ wbcir_keydown(data, scancode, toggle);
+}
+
+static void
+wbcir_parse_nec(struct device *dev, struct wbcir_data *data)
+{
+ /*
+ * Each bit represents 560 us.
+ *
+ * Leader - 9 ms burst
+ * Gap - 4.5 ms silence
+ * Address1 bit 0 - 7 - Address 1
+ * Address2 bit 0 - 7 - Address 2
+ * Command1 bit 0 - 7 - Command 1
+ * Command2 bit 0 - 7 - Command 2
+ *
+ * Note the bit order!
+ *
+ * With the old NEC protocol, Address2 was the inverse of Address1
+ * and Command2 was the inverse of Command1 and were used as
+ * an error check.
+ *
+ * With NEC extended, Address1 is the LSB of the Address and
+ * Address2 is the MSB, Command parsing remains unchanged.
+ *
+ * A repeat message is coded as:
+ * Leader - 9 ms burst
+ * Gap - 2.25 ms silence
+ * Repeat - 560 us active
+ */
+ u8 address1;
+ u8 address2;
+ u8 command1;
+ u8 command2;
+ u16 address;
+ u32 scancode;
+
+ /* Leader mark */
+ while (get_bits(data, 1) && !data->irdata_error)
+ /* Do nothing */;
+
+ /* Leader space */
+ if (get_bits(data, 4)) {
+ dev_dbg(dev, "NEC - Invalid leader space\n");
+ return;
+ }
+
+ /* Repeat? */
+ if (get_bits(data, 1)) {
+ if (!data->keypressed) {
+ dev_dbg(dev, "NEC - Stray repeat message\n");
+ return;
+ }
+
+ dev_dbg(dev, "IR-NEC repeat s %u\n",
+ (unsigned int)data->last_scancode);
+
+ wbcir_keydown(data, data->last_scancode, data->last_toggle);
+ return;
+ }
+
+ /* Remaining leader space */
+ if (get_bits(data, 3)) {
+ dev_dbg(dev, "NEC - Invalid leader space\n");
+ return;
+ }
+
+ address1 = bitrev8(get_bits(data, 8));
+ address2 = bitrev8(get_bits(data, 8));
+ command1 = bitrev8(get_bits(data, 8));
+ command2 = bitrev8(get_bits(data, 8));
+
+ /* Sanity check */
+ if (data->irdata_error) {
+ dev_dbg(dev, "NEC - Invalid message\n");
+ return;
+ }
+
+ /* Check command validity */
+ if (command1 != ~command2) {
+ dev_dbg(dev, "NEC - Command bytes mismatch\n");
+ return;
+ }
+
+ /* Check for extended NEC protocol */
+ address = address1;
+ if (address1 != ~address2)
+ address |= address2 << 8;
+
+ scancode = address << 8 | command1;
+
+ dev_dbg(dev, "IR-NEC ad %u cm %u s %u\n",
+ (unsigned int)address,
+ (unsigned int)command1,
+ (unsigned int)scancode);
+
+ wbcir_keydown(data, scancode, !data->last_toggle);
+}
+
+
+
+/*****************************************************************************
+ *
+ * INTERRUPT FUNCTIONS
+ *
+ *****************************************************************************/
+
+static irqreturn_t
+wbcir_irq_handler(int irqno, void *cookie)
+{
+ struct pnp_dev *device = cookie;
+ struct wbcir_data *data = pnp_get_drvdata(device);
+ struct device *dev = &device->dev;
+ u8 status;
+ unsigned long flags;
+ u8 irdata[16];
+ int i;
+ unsigned int hw;
+
+ spin_lock_irqsave(&wbcir_lock, flags);
+
+ wbcir_select_bank(data, WBCIR_BANK_0);
+
+ status = inb(data->sbase + WBCIR_REG_SP3_EIR);
+
+ if (!(status & (WBCIR_IRQ_RX | WBCIR_IRQ_ERR))) {
+ spin_unlock_irqrestore(&wbcir_lock, flags);
+ return IRQ_NONE;
+ }
+
+ if (status & WBCIR_IRQ_ERR)
+ data->irdata_error = 1;
+
+ if (!(status & WBCIR_IRQ_RX))
+ goto out;
+
+ /* Since RXHDLEV is set, at least 16 bytes are in the FIFO */
+ insb(data->sbase + WBCIR_REG_SP3_RXDATA, &irdata[0], 8);
+ insb(data->sbase + WBCIR_REG_SP3_RXDATA, &irdata[8], 8);
+
+ for (i = 0; i < sizeof(data); i++) {
+ hw = hweight8(irdata[i]);
+ if (hw > 4)
+ add_irdata_bit(data, 0);
+ else
+ add_irdata_bit(data, 1);
+
+ if (hw == 8)
+ data->idle_count++;
+ else
+ data->idle_count = 0;
+ }
+
+ if (data->idle_count > WBCIR_MAX_IDLE_BYTES) {
+ /* Drain the FIFO */
+ while (inb(data->sbase + WBCIR_REG_SP3_LSR) & WBCIR_RX_AVAIL)
+ inb(data->sbase + WBCIR_REG_SP3_RXDATA);
+
+ /* And set RXINACTIVE */
+ outb(WBCIR_RX_DISABLE, data->sbase + WBCIR_REG_SP3_ASCR);
+
+ dev_dbg(dev, "IRDATA:\n");
+ for (i = 0; i < data->irdata_count; i += BITS_PER_LONG)
+ dev_dbg(dev, "0x%08lX\n", data->irdata[i/BITS_PER_LONG]);
+
+ switch (protocol) {
+ case IR_PROTOCOL_RC5:
+ wbcir_parse_rc5(dev, data);
+ break;
+ case IR_PROTOCOL_RC6:
+ wbcir_parse_rc6(dev, data);
+ break;
+ case IR_PROTOCOL_NEC:
+ wbcir_parse_nec(dev, data);
+ break;
+ }
+
+ wbcir_reset_irdata(data);
+ data->idle_count = 0;
+ }
+
+out:
+ spin_unlock_irqrestore(&wbcir_lock, flags);
+ return IRQ_HANDLED;
+}
+
+
+
+/*****************************************************************************
+ *
+ * SUSPEND/RESUME FUNCTIONS
+ *
+ *****************************************************************************/
+
+static void
+wbcir_shutdown(struct pnp_dev *device)
+{
+ struct device *dev = &device->dev;
+ struct wbcir_data *data = pnp_get_drvdata(device);
+ int do_wake = 1;
+ u8 match[11];
+ u8 mask[11];
+ u8 rc6_csl = 0;
+ int i;
+
+ memset(match, 0, sizeof(match));
+ memset(mask, 0, sizeof(mask));
+
+ if (wake_sc == INVALID_SCANCODE || !device_may_wakeup(dev)) {
+ do_wake = 0;
+ goto finish;
+ }
+
+ switch (protocol) {
+ case IR_PROTOCOL_RC5:
+ if (wake_sc > 0xFFF) {
+ do_wake = 0;
+ dev_err(dev, "RC5 - Invalid wake scancode\n");
+ break;
+ }
+
+ /* Mask = 13 bits, ex toggle */
+ mask[0] = 0xFF;
+ mask[1] = 0x17;
+
+ match[0] = (wake_sc & 0x003F); /* 6 command bits */
+ match[0] |= (wake_sc & 0x0180) >> 1; /* 2 address bits */
+ match[1] = (wake_sc & 0x0E00) >> 9; /* 3 address bits */
+ if (!(wake_sc & 0x0040)) /* 2nd start bit */
+ match[1] |= 0x10;
+
+ break;
+
+ case IR_PROTOCOL_NEC:
+ if (wake_sc > 0xFFFFFF) {
+ do_wake = 0;
+ dev_err(dev, "NEC - Invalid wake scancode\n");
+ break;
+ }
+
+ mask[0] = mask[1] = mask[2] = mask[3] = 0xFF;
+
+ match[1] = bitrev8((wake_sc & 0xFF));
+ match[0] = ~match[1];
+
+ match[3] = bitrev8((wake_sc & 0xFF00) >> 8);
+ if (wake_sc > 0xFFFF)
+ match[2] = bitrev8((wake_sc & 0xFF0000) >> 16);
+ else
+ match[2] = ~match[3];
+
+ break;
+
+ case IR_PROTOCOL_RC6:
+
+ if (wake_rc6mode == 0) {
+ if (wake_sc > 0xFFFF) {
+ do_wake = 0;
+ dev_err(dev, "RC6 - Invalid wake scancode\n");
+ break;
+ }
+
+ /* Command */
+ match[0] = wbcir_to_rc6cells(wake_sc >> 0);
+ mask[0] = 0xFF;
+ match[1] = wbcir_to_rc6cells(wake_sc >> 4);
+ mask[1] = 0xFF;
+
+ /* Address */
+ match[2] = wbcir_to_rc6cells(wake_sc >> 8);
+ mask[2] = 0xFF;
+ match[3] = wbcir_to_rc6cells(wake_sc >> 12);
+ mask[3] = 0xFF;
+
+ /* Header */
+ match[4] = 0x50; /* mode1 = mode0 = 0, ignore toggle */
+ mask[4] = 0xF0;
+ match[5] = 0x09; /* start bit = 1, mode2 = 0 */
+ mask[5] = 0x0F;
+
+ rc6_csl = 44;
+
+ } else if (wake_rc6mode == 6) {
+ i = 0;
+
+ /* Command */
+ match[i] = wbcir_to_rc6cells(wake_sc >> 0);
+ mask[i++] = 0xFF;
+ match[i] = wbcir_to_rc6cells(wake_sc >> 4);
+ mask[i++] = 0xFF;
+
+ /* Address + Toggle */
+ match[i] = wbcir_to_rc6cells(wake_sc >> 8);
+ mask[i++] = 0xFF;
+ match[i] = wbcir_to_rc6cells(wake_sc >> 12);
+ mask[i++] = 0x3F;
+
+ /* Customer bits 7 - 0 */
+ match[i] = wbcir_to_rc6cells(wake_sc >> 16);
+ mask[i++] = 0xFF;
+ match[i] = wbcir_to_rc6cells(wake_sc >> 20);
+ mask[i++] = 0xFF;
+
+ if (wake_sc & 0x80000000) {
+ /* Customer range bit and bits 15 - 8 */
+ match[i] = wbcir_to_rc6cells(wake_sc >> 24);
+ mask[i++] = 0xFF;
+ match[i] = wbcir_to_rc6cells(wake_sc >> 28);
+ mask[i++] = 0xFF;
+ rc6_csl = 76;
+ } else if (wake_sc <= 0x007FFFFF) {
+ rc6_csl = 60;
+ } else {
+ do_wake = 0;
+ dev_err(dev, "RC6 - Invalid wake scancode\n");
+ break;
+ }
+
+ /* Header */
+ match[i] = 0x93; /* mode1 = mode0 = 1, submode = 0 */
+ mask[i++] = 0xFF;
+ match[i] = 0x0A; /* start bit = 1, mode2 = 1 */
+ mask[i++] = 0x0F;
+
+ } else {
+ do_wake = 0;
+ dev_err(dev, "RC6 - Invalid wake mode\n");
+ }
+
+ break;
+
+ default:
+ do_wake = 0;
+ break;
+ }
+
+finish:
+ if (do_wake) {
+ /* Set compare and compare mask */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_INDEX,
+ WBCIR_REGSEL_COMPARE | WBCIR_REG_ADDR0,
+ 0x3F);
+ outsb(data->wbase + WBCIR_REG_WCEIR_DATA, match, 11);
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_INDEX,
+ WBCIR_REGSEL_MASK | WBCIR_REG_ADDR0,
+ 0x3F);
+ outsb(data->wbase + WBCIR_REG_WCEIR_DATA, mask, 11);
+
+ /* RC6 Compare String Len */
+ outb(rc6_csl, data->wbase + WBCIR_REG_WCEIR_CSL);
+
+ /* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_STS, 0x17, 0x17);
+
+ /* Clear BUFF_EN, Clear END_EN, Set MATCH_EN */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x01, 0x07);
+
+ /* Set CEIR_EN */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CTL, 0x01, 0x01);
+
+ } else {
+ /* Clear BUFF_EN, Clear END_EN, Clear MATCH_EN */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x00, 0x07);
+
+ /* Clear CEIR_EN */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CTL, 0x00, 0x01);
+ }
+
+ /* Disable interrupts */
+ outb(WBCIR_IRQ_NONE, data->sbase + WBCIR_REG_SP3_IER);
+}
+
+static int
+wbcir_suspend(struct pnp_dev *device, pm_message_t state)
+{
+ wbcir_shutdown(device);
+ return 0;
+}
+
+static int
+wbcir_resume(struct pnp_dev *device)
+{
+ struct wbcir_data *data = pnp_get_drvdata(device);
+
+ /* Clear BUFF_EN, Clear END_EN, Clear MATCH_EN */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x00, 0x07);
+
+ /* Clear CEIR_EN */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CTL, 0x00, 0x01);
+
+ /* Enable interrupts */
+ wbcir_reset_irdata(data);
+ outb(WBCIR_IRQ_RX | WBCIR_IRQ_ERR, data->sbase + WBCIR_REG_SP3_IER);
+
+ return 0;
+}
+
+
+
+/*****************************************************************************
+ *
+ * SETUP/INIT FUNCTIONS
+ *
+ *****************************************************************************/
+
+static ssize_t
+wbcir_show_last_scancode(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct pnp_dev *device = container_of(dev, struct pnp_dev, dev);
+ struct wbcir_data *data = pnp_get_drvdata(device);
+ return sprintf(buf, "0x%08X\n", data->last_scancode);
+}
+
+static struct device_attribute dev_attr_last_scancode = {
+ .attr = {
+ .name = "last_scancode",
+ .mode = 0444,
+ },
+ .show = wbcir_show_last_scancode,
+ .store = NULL,
+
+};Why is this needed? And if this is needed we have a nice macro for that.
+
+static struct attribute *wbcir_attributes[] = {
+ &dev_attr_last_scancode.attr,
+ NULL,
+};
+
+static struct attribute_group wbcir_attribute_group = {
+ .attrs = wbcir_attributes,
+};
+
+static void
+wbcir_cfg_ceir(struct wbcir_data *data)
+{
+ u8 tmp;
+
+ /* Set PROT_SEL, RX_INV, Clear CEIR_EN (needed for the led) */
+ tmp = protocol << 4;
+ if (invert)
+ tmp |= 0x08;
+ outb(tmp, data->wbase + WBCIR_REG_WCEIR_CTL);
+
+ /* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_STS, 0x17, 0x17);
+
+ /* Clear BUFF_EN, Clear END_EN, Clear MATCH_EN */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x00, 0x07);
+
+ /* Set RC5 cell time to correspond to 36 kHz */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CFG1, 0x4A, 0x7F);
+
+ /* Set IRTX_INV */
+ if (invert)
+ outb(0x04, data->ebase + WBCIR_REG_ECEIR_CCTL);
+ else
+ outb(0x00, data->ebase + WBCIR_REG_ECEIR_CCTL);
+
+ /*
+ * Clear IR LED, set SP3 clock to 24Mhz
+ * set SP3_IRRX_SW to binary 01, helpfully not documented
+ */
+ outb(0x10, data->ebase + WBCIR_REG_ECEIR_CTS);
+}
+
+static int
+wbcir_probe(struct pnp_dev *device, const struct pnp_device_id *dev_id)__devinit
+{
+ struct device *dev = &device->dev;
+ struct wbcir_data *data;
+ int err;
+
+ if (!(pnp_port_len(device, 0) == EHFUNC_IOMEM_LEN &&
+ pnp_port_len(device, 1) == WAKEUP_IOMEM_LEN &&
+ pnp_port_len(device, 2) == SP_IOMEM_LEN)) {
+ dev_err(dev, "Invalid resources\n");
+ return -ENODEV;
+ }
+
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ pnp_set_drvdata(device, data);
+
+ data->ebase = pnp_port_start(device, 0);
+ data->wbase = pnp_port_start(device, 1);
+ data->sbase = pnp_port_start(device, 2);
+ data->irq = pnp_irq(device, 0);
+
+ if (data->wbase == 0 || data->ebase == 0 ||
+ data->sbase == 0 || data->irq == 0) {
+ err = -ENODEV;
+ dev_err(dev, "Invalid resources\n");
+ goto exit_free_data;
+ }
+
+ dev_info(&device->dev, "Found device "
+ "(w: 0x%lX, e: 0x%lX, s: 0x%lX, i: %u)\n",
+ data->wbase, data->ebase, data->sbase, data->irq);
+dev_dbg() I think.
+ if (!request_region(data->wbase, WAKEUP_IOMEM_LEN, DRVNAME)) {
+ dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
+ data->wbase, data->wbase + WAKEUP_IOMEM_LEN - 1);
+ err = -EBUSY;
+ goto exit_free_data;
+ }
+
+ if (!request_region(data->ebase, EHFUNC_IOMEM_LEN, DRVNAME)) {
+ dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
+ data->ebase, data->ebase + EHFUNC_IOMEM_LEN - 1);
+ err = -EBUSY;
+ goto exit_release_wbase;
+ }
+
+ if (!request_region(data->sbase, SP_IOMEM_LEN, DRVNAME)) {
+ dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
+ data->sbase, data->sbase + SP_IOMEM_LEN - 1);
+ err = -EBUSY;
+ goto exit_release_ebase;
+ }
+
+ err = request_irq(data->irq, wbcir_irq_handler,
+ IRQF_DISABLED, DRVNAME, device);
+ if (err) {
+ dev_err(dev, "Failed to claim IRQ %u\n", data->irq);
+ err = -EBUSY;
+ goto exit_release_sbase;
+ }
+
+ led_trigger_register_simple("cir-tx", &data->txtrigger);
+ if (!data->txtrigger) {
+ err = -ENOMEM;
+ goto exit_free_irq;
+ }
+
+ led_trigger_register_simple("cir-rx", &data->rxtrigger);
+ if (!data->rxtrigger) {
+ err = -ENOMEM;
+ goto exit_unregister_txtrigger;
+ }
+
+ data->led.name = "cir::activity";
+ data->led.default_trigger = "cir-rx";
+ data->led.brightness_set = wbcir_led_brightness_set;
+ data->led.brightness_get = wbcir_led_brightness_get;
+ err = led_classdev_register(&device->dev, &data->led);
+ if (err)
+ goto exit_unregister_rxtrigger;
+
+ data->input_dev = input_allocate_device();
+ if (!data->input_dev) {
+ err = -ENOMEM;
+ goto exit_unregister_led;
+ }
+
+ data->input_dev->evbit[0] = BIT(EV_KEY);
+ data->input_dev->name = WBCIR_ACPI_NAME;
+ data->input_dev->phys = "wbcir/cir0";
+ data->input_dev->id.bustype = BUS_HOST;
+ data->input_dev->id.vendor = PCI_VENDOR_ID_WINBOND;
+ data->input_dev->id.product = WBCIR_ID_FAMILY;
+ data->input_dev->id.version = WBCIR_ID_CHIP;
+ data->input_dev->getkeycode = wbcir_getkeycode;
+ data->input_dev->setkeycode = wbcir_setkeycode;
+ input_set_drvdata(data->input_dev, data);
+
+ err = input_register_device(data->input_dev);
+ if (err)
+ goto exit_free_input;
+
+ data->last_scancode = INVALID_SCANCODE;
+ err = sysfs_create_group(&device->dev.kobj, &wbcir_attribute_group);
+ if (err)
+ goto exit_unregister_input;
+
+ INIT_LIST_HEAD(&data->keytable);
+ setup_timer(&data->timer_keyup, wbcir_keyup, (unsigned long)data);
+
+ /* Load default keymaps */
+ if (protocol == IR_PROTOCOL_RC6) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(rc6_def_keymap); i++) {
+ err = wbcir_setkeycode(data->input_dev,
+ (int)rc6_def_keymap[i].scancode,
+ (int)rc6_def_keymap[i].keycode);
+ if (err)
+ goto exit_unregister_keys;
+ }
+ }
+
+ device_init_wakeup(&device->dev, 1);
+
+ wbcir_cfg_ceir(data);
+
+ /* Disable interrupts */
+ wbcir_select_bank(data, WBCIR_BANK_0);
+ outb(WBCIR_IRQ_NONE, data->sbase + WBCIR_REG_SP3_IER);
+
+ /* Enable extended mode */
+ wbcir_select_bank(data, WBCIR_BANK_2);
+ outb(WBCIR_EXT_ENABLE, data->sbase + WBCIR_REG_SP3_EXCR1);
+
+ /*
+ * Configure baud generator, IR data will be sampled at
+ * a bitrate of: (24Mhz * prescaler) / (divisor * 16).
+ *
+ * The ECIR registers include a flag to change the
+ * 24Mhz clock freq to 48Mhz.
+ */
+
+ /* prescaler 1.0, tx/rx fifo lvl 32 */
+ outb(0x35, data->sbase + WBCIR_REG_SP3_EXCR2);
+
+ /* Set baud divisor to generate one byte per bit/cell */
+ switch (protocol) {
+ case IR_PROTOCOL_RC5:
+ outb(0xA7, data->sbase + WBCIR_REG_SP3_BGDL);
+ break;
+ case IR_PROTOCOL_RC6:
+ outb(0x53, data->sbase + WBCIR_REG_SP3_BGDL);
+ break;
+ case IR_PROTOCOL_NEC:
+ outb(0x69, data->sbase + WBCIR_REG_SP3_BGDL);
+ break;
+ }
+ outb(0x00, data->sbase + WBCIR_REG_SP3_BGDH);
+
+ /* Set CEIR mode */
+ wbcir_select_bank(data, WBCIR_BANK_0);
+ outb(0xC0, data->sbase + WBCIR_REG_SP3_MCR);
+ inb(data->sbase + WBCIR_REG_SP3_LSR); /* Clear LSR */
+ inb(data->sbase + WBCIR_REG_SP3_MSR); /* Clear MSR */
+
+ /* Disable RX demod, run-length encoding/decoding, set freq span */
+ wbcir_select_bank(data, WBCIR_BANK_7);
+ outb(0x10, data->sbase + WBCIR_REG_SP3_RCCFG);
+
+ /* Disable timer */
+ wbcir_select_bank(data, WBCIR_BANK_4);
+ outb(0x00, data->sbase + WBCIR_REG_SP3_IRCR1);
+
+ /* Enable MSR interrupt, Clear AUX_IRX */
+ wbcir_select_bank(data, WBCIR_BANK_5);
+ outb(0x00, data->sbase + WBCIR_REG_SP3_IRCR2);
+
+ /* Disable CRC */
+ wbcir_select_bank(data, WBCIR_BANK_6);
+ outb(0x20, data->sbase + WBCIR_REG_SP3_IRCR3);
+
+ /* Set RX/TX (de)modulation freq, not really used */
+ wbcir_select_bank(data, WBCIR_BANK_7);
+ outb(0xF2, data->sbase + WBCIR_REG_SP3_IRRXDC);
+ outb(0x69, data->sbase + WBCIR_REG_SP3_IRTXMC);
+
+ /* Set invert and pin direction */
+ if (invert)
+ outb(0x10, data->sbase + WBCIR_REG_SP3_IRCFG4);
+ else
+ outb(0x00, data->sbase + WBCIR_REG_SP3_IRCFG4);
+
+ /* Set FIFO thresholds (RX = 16, TX = 7), reset RX/TX */
+ wbcir_select_bank(data, WBCIR_BANK_0);
+ outb(0x97, data->sbase + WBCIR_REG_SP3_FCR);
+
+ /* Clear AUX status bits */
+ outb(0xE0, data->sbase + WBCIR_REG_SP3_ASCR);
+
+ /* Enable interrupts */
+ wbcir_select_bank(data, WBCIR_BANK_0);
+ outb(WBCIR_IRQ_RX | WBCIR_IRQ_ERR, data->sbase + WBCIR_REG_SP3_IER);
+
+ return 0;
+
+exit_unregister_keys:
+ if (!list_empty(&data->keytable)) {
+ struct wbcir_keyentry *key;
+ struct wbcir_keyentry *keytmp;
+
+ list_for_each_entry_safe(key, keytmp, &data->keytable, list) {
+ list_del(&key->list);
+ kfree(key);
+ }
+ }
+exit_unregister_input:
+ input_unregister_device(data->input_dev);
+ /* Can't call input_free_device on an unregistered device */
+ data->input_dev = NULL;
+exit_free_input:
+ input_free_device(data->input_dev);
+exit_unregister_led:
+ led_classdev_unregister(&data->led);
+exit_unregister_rxtrigger:
+ led_trigger_unregister_simple(data->rxtrigger);
+exit_unregister_txtrigger:
+ led_trigger_unregister_simple(data->txtrigger);
+exit_free_irq:
+ free_irq(data->irq, device);
+exit_release_sbase:
+ release_region(data->sbase, SP_IOMEM_LEN);
+exit_release_ebase:
+ release_region(data->ebase, EHFUNC_IOMEM_LEN);
+exit_release_wbase:
+ release_region(data->wbase, WAKEUP_IOMEM_LEN);
+exit_free_data:
+ kfree(data);
+ pnp_set_drvdata(device, NULL);
+exit:
+ return err;
+}
+
+static void
+wbcir_remove(struct pnp_dev *device)__devexit
+{
+ struct wbcir_data *data = pnp_get_drvdata(device);
+ struct wbcir_keyentry *key;
+ struct wbcir_keyentry *keytmp;
+
+ /* Disable interrupts */
+ wbcir_select_bank(data, WBCIR_BANK_0);
+ outb(WBCIR_IRQ_NONE, data->sbase + WBCIR_REG_SP3_IER);
+
+ del_timer_sync(&data->timer_keyup);
+
+ free_irq(data->irq, device);
+
+ /* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_STS, 0x17, 0x17);
+
+ /* Clear CEIR_EN */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CTL, 0x00, 0x01);
+
+ /* Clear BUFF_EN, END_EN, MATCH_EN */
+ wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x00, 0x07);
+
+ sysfs_remove_group(&device->dev.kobj, &wbcir_attribute_group);
+
+ /* This will generate a keyup event if necessary */
+ input_unregister_device(data->input_dev);
+
+ led_trigger_unregister_simple(data->rxtrigger);
+ led_trigger_unregister_simple(data->txtrigger);
+ led_classdev_unregister(&data->led);
+
+ /* This is ok since &data->led isn't actually used */
+ wbcir_led_brightness_set(&data->led, LED_OFF);
+
+ release_region(data->wbase, WAKEUP_IOMEM_LEN);
+ release_region(data->ebase, EHFUNC_IOMEM_LEN);
+ release_region(data->sbase, SP_IOMEM_LEN);
+
+ list_for_each_entry_safe(key, keytmp, &data->keytable, list) {
+ list_del(&key->list);
+ kfree(key);
+ }
+
+ kfree(data);
+
+ pnp_set_drvdata(device, NULL);
+}
+
+static const struct pnp_device_id wbcir_ids[] = {
+ { "WEC1022", 0 },
+ { "", 0 }
+};
+MODULE_DEVICE_TABLE(pnp, wbcir_ids);
+
+static struct pnp_driver wbcir_driver = {
+ .name = WBCIR_ACPI_NAME,
+ .id_table = wbcir_ids,
+ .probe = wbcir_probe,
+ .remove = wbcir_remove,__devexit_p()
+ .suspend = wbcir_suspend, + .resume = wbcir_resume,
Switch to dev_pm_ops?
+ .shutdown = wbcir_shutdown
+};
+
+static int __init
+wbcir_init(void)
+{
+ int ret;
+
+ switch (protocol) {
+ case IR_PROTOCOL_RC5:
+ case IR_PROTOCOL_NEC:
+ case IR_PROTOCOL_RC6:
+ break;
+ default:
+ printk(KERN_ERR DRVNAME ": Invalid protocol argument\n");
+ return -EINVAL;
+ }
+
+ ret = pnp_register_driver(&wbcir_driver);
+ if (ret)
+ printk(KERN_ERR DRVNAME ": Unable to register driver\n");
+
+ return ret;
+}
+
+static void __exit
+wbcir_exit(void)
+{
+ pnp_unregister_driver(&wbcir_driver);
+}
+
+MODULE_AUTHOR("David Härdeman [off-list ref]");
+MODULE_DESCRIPTION("Winbond SuperI/O Consumer IR Driver");
+MODULE_LICENSE("GPL");
+
+module_init(wbcir_init);
+module_exit(wbcir_exit);
+
+
--
David Härdeman
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