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V4L/DVB: STAGING: remove lirc_ene0100 driver
Add latest unported version of this driver to media/IR. Next patch will port it to ir core. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Maxim Levitsky
Mauro Carvalho Chehab
parent
ed4d3876d1
commit
9ea53b74df
1176
drivers/media/IR/ene_ir.c
Normal file
1176
drivers/media/IR/ene_ir.c
Normal file
File diff suppressed because it is too large
Load Diff
240
drivers/media/IR/ene_ir.h
Normal file
240
drivers/media/IR/ene_ir.h
Normal file
@ -0,0 +1,240 @@
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/*
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* driver for ENE KB3926 B/C/D CIR (also known as ENE0100/ENE0200/ENE0201)
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*
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* Copyright (C) 2010 Maxim Levitsky <maximlevitsky@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#include <linux/spinlock.h>
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#include <media/lirc.h>
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#include <media/lirc_dev.h>
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/* hardware address */
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#define ENE_STATUS 0 /* hardware status - unused */
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#define ENE_ADDR_HI 1 /* hi byte of register address */
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#define ENE_ADDR_LO 2 /* low byte of register address */
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#define ENE_IO 3 /* read/write window */
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#define ENE_MAX_IO 4
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/* 8 bytes of samples, divided in 2 halfs*/
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#define ENE_SAMPLE_BUFFER 0xF8F0 /* regular sample buffer */
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#define ENE_SAMPLE_SPC_MASK 0x80 /* sample is space */
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#define ENE_SAMPLE_VALUE_MASK 0x7F
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#define ENE_SAMPLE_OVERFLOW 0x7F
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#define ENE_SAMPLES_SIZE 4
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/* fan input sample buffer */
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#define ENE_SAMPLE_BUFFER_FAN 0xF8FB /* this buffer holds high byte of */
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/* each sample of normal buffer */
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#define ENE_FAN_SMPL_PULS_MSK 0x8000 /* this bit of combined sample */
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/* if set, says that sample is pulse */
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#define ENE_FAN_VALUE_MASK 0x0FFF /* mask for valid bits of the value */
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/* first firmware register */
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#define ENE_FW1 0xF8F8
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#define ENE_FW1_ENABLE 0x01 /* enable fw processing */
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#define ENE_FW1_TXIRQ 0x02 /* TX interrupt pending */
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#define ENE_FW1_WAKE 0x40 /* enable wake from S3 */
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#define ENE_FW1_IRQ 0x80 /* enable interrupt */
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/* second firmware register */
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#define ENE_FW2 0xF8F9
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#define ENE_FW2_BUF_HIGH 0x01 /* which half of the buffer to read */
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#define ENE_FW2_IRQ_CLR 0x04 /* clear this on IRQ */
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#define ENE_FW2_GP40_AS_LEARN 0x08 /* normal input is used as */
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/* learning input */
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#define ENE_FW2_FAN_AS_NRML_IN 0x40 /* fan is used as normal input */
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#define ENE_FW2_LEARNING 0x80 /* hardware supports learning and TX */
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/* transmitter ports */
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#define ENE_TX_PORT2 0xFC01 /* this enables one or both */
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#define ENE_TX_PORT2_EN 0x20 /* TX ports */
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#define ENE_TX_PORT1 0xFC08
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#define ENE_TX_PORT1_EN 0x02
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/* IRQ registers block (for revision B) */
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#define ENEB_IRQ 0xFD09 /* IRQ number */
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#define ENEB_IRQ_UNK1 0xFD17 /* unknown setting = 1 */
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#define ENEB_IRQ_STATUS 0xFD80 /* irq status */
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#define ENEB_IRQ_STATUS_IR 0x20 /* IR irq */
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/* fan as input settings - only if learning capable */
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#define ENE_FAN_AS_IN1 0xFE30 /* fan init reg 1 */
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#define ENE_FAN_AS_IN1_EN 0xCD
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#define ENE_FAN_AS_IN2 0xFE31 /* fan init reg 2 */
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#define ENE_FAN_AS_IN2_EN 0x03
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#define ENE_SAMPLE_PERIOD_FAN 61 /* fan input has fixed sample period */
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/* IRQ registers block (for revision C,D) */
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#define ENEC_IRQ 0xFE9B /* new irq settings register */
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#define ENEC_IRQ_MASK 0x0F /* irq number mask */
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#define ENEC_IRQ_UNK_EN 0x10 /* always enabled */
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#define ENEC_IRQ_STATUS 0x20 /* irq status and ACK */
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/* CIR block settings */
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#define ENE_CIR_CONF1 0xFEC0
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#define ENE_CIR_CONF1_TX_CLEAR 0x01 /* clear that on revC */
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/* while transmitting */
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#define ENE_CIR_CONF1_RX_ON 0x07 /* normal reciever enabled */
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#define ENE_CIR_CONF1_LEARN1 0x08 /* enabled on learning mode */
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#define ENE_CIR_CONF1_TX_ON 0x30 /* enabled on transmit */
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#define ENE_CIR_CONF1_TX_CARR 0x80 /* send TX carrier or not */
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#define ENE_CIR_CONF2 0xFEC1 /* unknown setting = 0 */
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#define ENE_CIR_CONF2_LEARN2 0x10 /* set on enable learning */
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#define ENE_CIR_CONF2_GPIO40DIS 0x20 /* disable input via gpio40 */
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#define ENE_CIR_SAMPLE_PERIOD 0xFEC8 /* sample period in us */
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#define ENE_CIR_SAMPLE_OVERFLOW 0x80 /* interrupt on overflows if set */
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/* Two byte tx buffer */
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#define ENE_TX_INPUT1 0xFEC9
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#define ENE_TX_INPUT2 0xFECA
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#define ENE_TX_PULSE_MASK 0x80 /* Transmitted sample is pulse */
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#define ENE_TX_SMLP_MASK 0x7F
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#define ENE_TX_SMPL_PERIOD 50 /* transmit sample period - fixed */
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/* Unknown TX setting - TX sample period ??? */
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#define ENE_TX_UNK1 0xFECB /* set to 0x63 */
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/* Current recieved carrier period */
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#define ENE_RX_CARRIER 0xFECC /* RX period (500 ns) */
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#define ENE_RX_CARRIER_VALID 0x80 /* Register content valid */
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/* TX period (1/carrier) */
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#define ENE_TX_PERIOD 0xFECE /* TX period (500 ns) */
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#define ENE_TX_PERIOD_UNKBIT 0x80 /* This bit set on transmit*/
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#define ENE_TX_PERIOD_PULSE 0xFECF /* TX pulse period (500 ns)*/
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/* Hardware versions */
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#define ENE_HW_VERSION 0xFF00 /* hardware revision */
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#define ENE_HW_UNK 0xFF1D
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#define ENE_HW_UNK_CLR 0x04
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#define ENE_HW_VER_MAJOR 0xFF1E /* chip version */
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#define ENE_HW_VER_MINOR 0xFF1F
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#define ENE_HW_VER_OLD 0xFD00
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/* Normal/Learning carrier ranges - only valid if we have learning input*/
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/* TODO: test */
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#define ENE_NORMAL_RX_LOW 34
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#define ENE_NORMAL_RX_HI 38
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/* Tx carrier range */
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/* Hardware might be able to do more, but this range is enough for
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all purposes */
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#define ENE_TX_PERIOD_MAX 32 /* corresponds to 29.4 kHz */
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#define ENE_TX_PERIOD_MIN 16 /* corrsponds to 62.5 kHz */
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/* Minimal and maximal gaps */
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/* Normal case:
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Minimal gap is 0x7F * sample period
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Maximum gap depends on hardware.
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For KB3926B, it is unlimited, for newer models its around
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250000, after which HW stops sending samples, and that is
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not possible to change */
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/* Fan case:
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Both minimal and maximal gaps are same, and equal to 0xFFF * 0x61
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And there is nothing to change this setting
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*/
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#define ENE_MAXGAP 250000
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#define ENE_MINGAP (127 * sample_period)
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/******************************************************************************/
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#define ENE_DRIVER_NAME "enecir"
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#define ENE_TXBUF_SIZE (500 * sizeof(int)) /* 500 samples (arbitary) */
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#define ENE_IRQ_RX 1
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#define ENE_IRQ_TX 2
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#define ENE_HW_B 1 /* 3926B */
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#define ENE_HW_C 2 /* 3926C */
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#define ENE_HW_D 3 /* 3926D */
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#define ene_printk(level, text, ...) \
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printk(level ENE_DRIVER_NAME ": " text, ## __VA_ARGS__)
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#define ene_dbg(text, ...) \
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if (debug) \
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printk(KERN_DEBUG \
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ENE_DRIVER_NAME ": " text "\n" , ## __VA_ARGS__)
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#define ene_dbg_verbose(text, ...) \
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if (debug > 1) \
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printk(KERN_DEBUG \
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ENE_DRIVER_NAME ": " text "\n" , ## __VA_ARGS__)
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struct ene_device {
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struct pnp_dev *pnp_dev;
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struct lirc_driver *lirc_driver;
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int in_use;
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/* hw IO settings */
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unsigned long hw_io;
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int irq;
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spinlock_t hw_lock;
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/* HW features */
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int hw_revision; /* hardware revision */
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int hw_learning_and_tx_capable; /* learning capable */
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int hw_gpio40_learning; /* gpio40 is learning */
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int hw_fan_as_normal_input; /* fan input is used as */
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/* regular input */
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/* HW state*/
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int rx_pointer; /* hw pointer to rx buffer */
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int rx_fan_input_inuse; /* is fan input in use for rx*/
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int tx_reg; /* current reg used for TX */
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u8 saved_conf1; /* saved FEC0 reg */
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int learning_enabled; /* learning input enabled */
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/* RX sample handling */
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int rx_sample; /* current recieved sample */
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int rx_sample_pulse; /* recieved sample is pulse */
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int rx_idle; /* idle mode for RX activated */
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struct timeval rx_gap_start; /* time of start of idle */
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int rx_timeout; /* time in ms of RX timeout */
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int rx_send_timeout_packet; /* do we send RX timeout */
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int rx_timeout_sent; /* we sent the timeout packet */
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int rx_carrier_sense; /* sense carrier */
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/* TX sample handling */
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unsigned int tx_sample; /* current sample for TX */
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int tx_sample_pulse; /* current sample is pulse */
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/* TX buffer */
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int tx_buffer[ENE_TXBUF_SIZE]; /* input samples buffer*/
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int tx_pos; /* position in that bufer */
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int tx_len; /* current len of tx buffer */
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int tx_underway; /* TX is under way*/
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int tx_done; /* done transmitting */
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/* one more sample pending*/
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struct completion tx_complete; /* TX completion */
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struct timer_list tx_sim_timer;
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/*TX settings */
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int tx_period;
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int tx_duty_cycle;
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int transmitter_mask;
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};
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@ -18,14 +18,6 @@ config LIRC_BT829
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help
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Driver for the IR interface on BT829-based hardware
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config LIRC_ENE0100
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tristate "ENE KB3924/ENE0100 CIR Port Reciever"
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depends on LIRC_STAGING && PNP
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help
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This is a driver for CIR port handled by ENE KB3924 embedded
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controller found on some notebooks.
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It appears on PNP list as ENE0100.
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config LIRC_I2C
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tristate "I2C Based IR Receivers"
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depends on LIRC_STAGING && I2C
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@ -4,7 +4,6 @@
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# Each configuration option enables a list of files.
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obj-$(CONFIG_LIRC_BT829) += lirc_bt829.o
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obj-$(CONFIG_LIRC_ENE0100) += lirc_ene0100.o
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obj-$(CONFIG_LIRC_I2C) += lirc_i2c.o
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obj-$(CONFIG_LIRC_IGORPLUGUSB) += lirc_igorplugusb.o
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obj-$(CONFIG_LIRC_IMON) += lirc_imon.o
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@ -1,646 +0,0 @@
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/*
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* driver for ENE KB3926 B/C/D CIR (also known as ENE0100)
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*
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* Copyright (C) 2009 Maxim Levitsky <maximlevitsky@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pnp.h>
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#include <linux/io.h>
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#include <linux/interrupt.h>
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#include <linux/sched.h>
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#include "lirc_ene0100.h"
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static int sample_period = 75;
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static int enable_idle = 1;
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static int enable_learning;
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static void ene_set_idle(struct ene_device *dev, int idle);
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static void ene_set_inputs(struct ene_device *dev, int enable);
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/* read a hardware register */
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static u8 ene_hw_read_reg(struct ene_device *dev, u16 reg)
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{
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outb(reg >> 8, dev->hw_io + ENE_ADDR_HI);
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outb(reg & 0xFF, dev->hw_io + ENE_ADDR_LO);
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return inb(dev->hw_io + ENE_IO);
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}
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/* write a hardware register */
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static void ene_hw_write_reg(struct ene_device *dev, u16 reg, u8 value)
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{
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outb(reg >> 8, dev->hw_io + ENE_ADDR_HI);
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outb(reg & 0xFF, dev->hw_io + ENE_ADDR_LO);
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outb(value, dev->hw_io + ENE_IO);
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}
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/* change specific bits in hardware register */
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static void ene_hw_write_reg_mask(struct ene_device *dev,
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u16 reg, u8 value, u8 mask)
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{
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u8 regvalue;
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outb(reg >> 8, dev->hw_io + ENE_ADDR_HI);
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outb(reg & 0xFF, dev->hw_io + ENE_ADDR_LO);
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regvalue = inb(dev->hw_io + ENE_IO) & ~mask;
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regvalue |= (value & mask);
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outb(regvalue, dev->hw_io + ENE_IO);
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}
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/* read irq status and ack it */
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static int ene_hw_irq_status(struct ene_device *dev, int *buffer_pointer)
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{
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u8 irq_status;
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u8 fw_flags1, fw_flags2;
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fw_flags2 = ene_hw_read_reg(dev, ENE_FW2);
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if (buffer_pointer)
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*buffer_pointer = 4 * (fw_flags2 & ENE_FW2_BUF_HIGH);
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if (dev->hw_revision < ENE_HW_C) {
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irq_status = ene_hw_read_reg(dev, ENEB_IRQ_STATUS);
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if (!(irq_status & ENEB_IRQ_STATUS_IR))
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return 0;
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ene_hw_write_reg(dev, ENEB_IRQ_STATUS,
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irq_status & ~ENEB_IRQ_STATUS_IR);
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/* rev B support only recieving */
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return ENE_IRQ_RX;
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}
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irq_status = ene_hw_read_reg(dev, ENEC_IRQ);
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if (!(irq_status & ENEC_IRQ_STATUS))
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return 0;
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/* original driver does that twice - a workaround ? */
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ene_hw_write_reg(dev, ENEC_IRQ, irq_status & ~ENEC_IRQ_STATUS);
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ene_hw_write_reg(dev, ENEC_IRQ, irq_status & ~ENEC_IRQ_STATUS);
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/* clear unknown flag in F8F9 */
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if (fw_flags2 & ENE_FW2_IRQ_CLR)
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ene_hw_write_reg(dev, ENE_FW2, fw_flags2 & ~ENE_FW2_IRQ_CLR);
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/* check if this is a TX interrupt */
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fw_flags1 = ene_hw_read_reg(dev, ENE_FW1);
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if (fw_flags1 & ENE_FW1_TXIRQ) {
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ene_hw_write_reg(dev, ENE_FW1, fw_flags1 & ~ENE_FW1_TXIRQ);
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return ENE_IRQ_TX;
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} else
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return ENE_IRQ_RX;
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}
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static int ene_hw_detect(struct ene_device *dev)
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{
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u8 chip_major, chip_minor;
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u8 hw_revision, old_ver;
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u8 tmp;
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u8 fw_capabilities;
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tmp = ene_hw_read_reg(dev, ENE_HW_UNK);
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ene_hw_write_reg(dev, ENE_HW_UNK, tmp & ~ENE_HW_UNK_CLR);
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chip_major = ene_hw_read_reg(dev, ENE_HW_VER_MAJOR);
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chip_minor = ene_hw_read_reg(dev, ENE_HW_VER_MINOR);
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ene_hw_write_reg(dev, ENE_HW_UNK, tmp);
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hw_revision = ene_hw_read_reg(dev, ENE_HW_VERSION);
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old_ver = ene_hw_read_reg(dev, ENE_HW_VER_OLD);
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if (hw_revision == 0xFF) {
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ene_printk(KERN_WARNING, "device seems to be disabled\n");
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ene_printk(KERN_WARNING,
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"send a mail to lirc-list@lists.sourceforge.net\n");
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ene_printk(KERN_WARNING, "please attach output of acpidump\n");
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return -ENODEV;
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}
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if (chip_major == 0x33) {
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ene_printk(KERN_WARNING, "chips 0x33xx aren't supported yet\n");
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return -ENODEV;
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}
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|
||||
if (chip_major == 0x39 && chip_minor == 0x26 && hw_revision == 0xC0) {
|
||||
dev->hw_revision = ENE_HW_C;
|
||||
ene_printk(KERN_WARNING,
|
||||
"KB3926C detected, driver support is not complete!\n");
|
||||
|
||||
} else if (old_ver == 0x24 && hw_revision == 0xC0) {
|
||||
dev->hw_revision = ENE_HW_B;
|
||||
ene_printk(KERN_NOTICE, "KB3926B detected\n");
|
||||
} else {
|
||||
dev->hw_revision = ENE_HW_D;
|
||||
ene_printk(KERN_WARNING,
|
||||
"unknown ENE chip detected, assuming KB3926D\n");
|
||||
ene_printk(KERN_WARNING, "driver support incomplete");
|
||||
|
||||
}
|
||||
|
||||
ene_printk(KERN_DEBUG, "chip is 0x%02x%02x - 0x%02x, 0x%02x\n",
|
||||
chip_major, chip_minor, old_ver, hw_revision);
|
||||
|
||||
|
||||
/* detect features hardware supports */
|
||||
|
||||
if (dev->hw_revision < ENE_HW_C)
|
||||
return 0;
|
||||
|
||||
fw_capabilities = ene_hw_read_reg(dev, ENE_FW2);
|
||||
|
||||
dev->hw_gpio40_learning = fw_capabilities & ENE_FW2_GP40_AS_LEARN;
|
||||
dev->hw_learning_and_tx_capable = fw_capabilities & ENE_FW2_LEARNING;
|
||||
|
||||
dev->hw_fan_as_normal_input = dev->hw_learning_and_tx_capable &&
|
||||
fw_capabilities & ENE_FW2_FAN_AS_NRML_IN;
|
||||
|
||||
ene_printk(KERN_NOTICE, "hardware features:\n");
|
||||
ene_printk(KERN_NOTICE,
|
||||
"learning and tx %s, gpio40_learn %s, fan_in %s\n",
|
||||
dev->hw_learning_and_tx_capable ? "on" : "off",
|
||||
dev->hw_gpio40_learning ? "on" : "off",
|
||||
dev->hw_fan_as_normal_input ? "on" : "off");
|
||||
|
||||
if (!dev->hw_learning_and_tx_capable && enable_learning)
|
||||
enable_learning = 0;
|
||||
|
||||
if (dev->hw_learning_and_tx_capable) {
|
||||
ene_printk(KERN_WARNING,
|
||||
"Device supports transmitting, but the driver doesn't\n");
|
||||
ene_printk(KERN_WARNING,
|
||||
"due to lack of hardware to test against.\n");
|
||||
ene_printk(KERN_WARNING,
|
||||
"Send a mail to: lirc-list@lists.sourceforge.net\n");
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* hardware initialization */
|
||||
static int ene_hw_init(void *data)
|
||||
{
|
||||
u8 reg_value;
|
||||
struct ene_device *dev = (struct ene_device *)data;
|
||||
dev->in_use = 1;
|
||||
|
||||
if (dev->hw_revision < ENE_HW_C) {
|
||||
ene_hw_write_reg(dev, ENEB_IRQ, dev->irq << 1);
|
||||
ene_hw_write_reg(dev, ENEB_IRQ_UNK1, 0x01);
|
||||
} else {
|
||||
reg_value = ene_hw_read_reg(dev, ENEC_IRQ) & 0xF0;
|
||||
reg_value |= ENEC_IRQ_UNK_EN;
|
||||
reg_value &= ~ENEC_IRQ_STATUS;
|
||||
reg_value |= (dev->irq & ENEC_IRQ_MASK);
|
||||
ene_hw_write_reg(dev, ENEC_IRQ, reg_value);
|
||||
ene_hw_write_reg(dev, ENE_TX_UNK1, 0x63);
|
||||
}
|
||||
|
||||
ene_hw_write_reg(dev, ENE_CIR_CONF2, 0x00);
|
||||
ene_set_inputs(dev, enable_learning);
|
||||
|
||||
/* set sampling period */
|
||||
ene_hw_write_reg(dev, ENE_CIR_SAMPLE_PERIOD, sample_period);
|
||||
|
||||
/* ack any pending irqs - just in case */
|
||||
ene_hw_irq_status(dev, NULL);
|
||||
|
||||
/* enter idle mode */
|
||||
ene_set_idle(dev, 1);
|
||||
|
||||
/* enable firmware bits */
|
||||
ene_hw_write_reg_mask(dev, ENE_FW1,
|
||||
ENE_FW1_ENABLE | ENE_FW1_IRQ,
|
||||
ENE_FW1_ENABLE | ENE_FW1_IRQ);
|
||||
/* clear stats */
|
||||
dev->sample = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* this enables gpio40 signal, used if connected to wide band input*/
|
||||
static void ene_enable_gpio40(struct ene_device *dev, int enable)
|
||||
{
|
||||
ene_hw_write_reg_mask(dev, ENE_CIR_CONF1, enable ?
|
||||
0 : ENE_CIR_CONF2_GPIO40DIS,
|
||||
ENE_CIR_CONF2_GPIO40DIS);
|
||||
}
|
||||
|
||||
/* this enables the classic sampler */
|
||||
static void ene_enable_normal_recieve(struct ene_device *dev, int enable)
|
||||
{
|
||||
ene_hw_write_reg(dev, ENE_CIR_CONF1, enable ? ENE_CIR_CONF1_ADC_ON : 0);
|
||||
}
|
||||
|
||||
/* this enables recieve via fan input */
|
||||
static void ene_enable_fan_recieve(struct ene_device *dev, int enable)
|
||||
{
|
||||
if (!enable)
|
||||
ene_hw_write_reg(dev, ENE_FAN_AS_IN1, 0);
|
||||
else {
|
||||
ene_hw_write_reg(dev, ENE_FAN_AS_IN1, ENE_FAN_AS_IN1_EN);
|
||||
ene_hw_write_reg(dev, ENE_FAN_AS_IN2, ENE_FAN_AS_IN2_EN);
|
||||
}
|
||||
dev->fan_input_inuse = enable;
|
||||
}
|
||||
|
||||
/* determine which input to use*/
|
||||
static void ene_set_inputs(struct ene_device *dev, int learning_enable)
|
||||
{
|
||||
ene_enable_normal_recieve(dev, 1);
|
||||
|
||||
/* old hardware doesn't support learning mode for sure */
|
||||
if (dev->hw_revision <= ENE_HW_B)
|
||||
return;
|
||||
|
||||
/* reciever not learning capable, still set gpio40 correctly */
|
||||
if (!dev->hw_learning_and_tx_capable) {
|
||||
ene_enable_gpio40(dev, !dev->hw_gpio40_learning);
|
||||
return;
|
||||
}
|
||||
|
||||
/* enable learning mode */
|
||||
if (learning_enable) {
|
||||
ene_enable_gpio40(dev, dev->hw_gpio40_learning);
|
||||
|
||||
/* fan input is not used for learning */
|
||||
if (dev->hw_fan_as_normal_input)
|
||||
ene_enable_fan_recieve(dev, 0);
|
||||
|
||||
/* disable learning mode */
|
||||
} else {
|
||||
if (dev->hw_fan_as_normal_input) {
|
||||
ene_enable_fan_recieve(dev, 1);
|
||||
ene_enable_normal_recieve(dev, 0);
|
||||
} else
|
||||
ene_enable_gpio40(dev, !dev->hw_gpio40_learning);
|
||||
}
|
||||
|
||||
/* set few additional settings for this mode */
|
||||
ene_hw_write_reg_mask(dev, ENE_CIR_CONF1, learning_enable ?
|
||||
ENE_CIR_CONF1_LEARN1 : 0, ENE_CIR_CONF1_LEARN1);
|
||||
|
||||
ene_hw_write_reg_mask(dev, ENE_CIR_CONF2, learning_enable ?
|
||||
ENE_CIR_CONF2_LEARN2 : 0, ENE_CIR_CONF2_LEARN2);
|
||||
}
|
||||
|
||||
/* deinitialization */
|
||||
static void ene_hw_deinit(void *data)
|
||||
{
|
||||
struct ene_device *dev = (struct ene_device *)data;
|
||||
|
||||
/* disable samplers */
|
||||
ene_enable_normal_recieve(dev, 0);
|
||||
|
||||
if (dev->hw_fan_as_normal_input)
|
||||
ene_enable_fan_recieve(dev, 0);
|
||||
|
||||
/* disable hardware IRQ and firmware flag */
|
||||
ene_hw_write_reg_mask(dev, ENE_FW1, 0, ENE_FW1_ENABLE | ENE_FW1_IRQ);
|
||||
|
||||
ene_set_idle(dev, 1);
|
||||
dev->in_use = 0;
|
||||
}
|
||||
|
||||
/* sends current sample to userspace */
|
||||
static void send_sample(struct ene_device *dev)
|
||||
{
|
||||
int value = abs(dev->sample) & PULSE_MASK;
|
||||
|
||||
if (dev->sample > 0)
|
||||
value |= PULSE_BIT;
|
||||
|
||||
if (!lirc_buffer_full(dev->lirc_driver->rbuf)) {
|
||||
lirc_buffer_write(dev->lirc_driver->rbuf, (void *)&value);
|
||||
wake_up(&dev->lirc_driver->rbuf->wait_poll);
|
||||
}
|
||||
dev->sample = 0;
|
||||
}
|
||||
|
||||
/* this updates current sample */
|
||||
static void update_sample(struct ene_device *dev, int sample)
|
||||
{
|
||||
if (!dev->sample)
|
||||
dev->sample = sample;
|
||||
else if (same_sign(dev->sample, sample))
|
||||
dev->sample += sample;
|
||||
else {
|
||||
send_sample(dev);
|
||||
dev->sample = sample;
|
||||
}
|
||||
}
|
||||
|
||||
/* enable or disable idle mode */
|
||||
static void ene_set_idle(struct ene_device *dev, int idle)
|
||||
{
|
||||
struct timeval now;
|
||||
int disable = idle && enable_idle && (dev->hw_revision < ENE_HW_C);
|
||||
|
||||
ene_hw_write_reg_mask(dev, ENE_CIR_SAMPLE_PERIOD,
|
||||
disable ? 0 : ENE_CIR_SAMPLE_OVERFLOW,
|
||||
ENE_CIR_SAMPLE_OVERFLOW);
|
||||
dev->idle = idle;
|
||||
|
||||
/* remember when we have entered the idle mode */
|
||||
if (idle) {
|
||||
do_gettimeofday(&dev->gap_start);
|
||||
return;
|
||||
}
|
||||
|
||||
/* send the gap between keypresses now */
|
||||
do_gettimeofday(&now);
|
||||
|
||||
if (now.tv_sec - dev->gap_start.tv_sec > 16)
|
||||
dev->sample = space(PULSE_MASK);
|
||||
else
|
||||
dev->sample = dev->sample +
|
||||
space(1000000ull * (now.tv_sec - dev->gap_start.tv_sec))
|
||||
+ space(now.tv_usec - dev->gap_start.tv_usec);
|
||||
|
||||
if (abs(dev->sample) > PULSE_MASK)
|
||||
dev->sample = space(PULSE_MASK);
|
||||
send_sample(dev);
|
||||
}
|
||||
|
||||
/* interrupt handler */
|
||||
static irqreturn_t ene_hw_irq(int irq, void *data)
|
||||
{
|
||||
u16 hw_value;
|
||||
int i, hw_sample;
|
||||
int space;
|
||||
int buffer_pointer;
|
||||
int irq_status;
|
||||
|
||||
struct ene_device *dev = (struct ene_device *)data;
|
||||
irq_status = ene_hw_irq_status(dev, &buffer_pointer);
|
||||
|
||||
if (!irq_status)
|
||||
return IRQ_NONE;
|
||||
|
||||
/* TODO: only RX for now */
|
||||
if (irq_status == ENE_IRQ_TX)
|
||||
return IRQ_HANDLED;
|
||||
|
||||
for (i = 0; i < ENE_SAMPLES_SIZE; i++) {
|
||||
|
||||
hw_value = ene_hw_read_reg(dev,
|
||||
ENE_SAMPLE_BUFFER + buffer_pointer + i);
|
||||
|
||||
if (dev->fan_input_inuse) {
|
||||
/* read high part of the sample */
|
||||
hw_value |= ene_hw_read_reg(dev,
|
||||
ENE_SAMPLE_BUFFER_FAN + buffer_pointer + i) << 8;
|
||||
|
||||
/* test for _space_ bit */
|
||||
space = !(hw_value & ENE_FAN_SMPL_PULS_MSK);
|
||||
|
||||
/* clear space bit, and other unused bits */
|
||||
hw_value &= ENE_FAN_VALUE_MASK;
|
||||
hw_sample = hw_value * ENE_SAMPLE_PERIOD_FAN;
|
||||
|
||||
} else {
|
||||
space = hw_value & ENE_SAMPLE_SPC_MASK;
|
||||
hw_value &= ENE_SAMPLE_VALUE_MASK;
|
||||
hw_sample = hw_value * sample_period;
|
||||
}
|
||||
|
||||
/* no more data */
|
||||
if (!(hw_value))
|
||||
break;
|
||||
|
||||
if (space)
|
||||
hw_sample *= -1;
|
||||
|
||||
/* overflow sample recieved, handle it */
|
||||
|
||||
if (!dev->fan_input_inuse && hw_value == ENE_SAMPLE_OVERFLOW) {
|
||||
|
||||
if (dev->idle)
|
||||
continue;
|
||||
|
||||
if (dev->sample > 0 || abs(dev->sample) <= ENE_MAXGAP)
|
||||
update_sample(dev, hw_sample);
|
||||
else
|
||||
ene_set_idle(dev, 1);
|
||||
|
||||
continue;
|
||||
}
|
||||
|
||||
/* normal first sample recieved */
|
||||
if (!dev->fan_input_inuse && dev->idle) {
|
||||
ene_set_idle(dev, 0);
|
||||
|
||||
/* discard first recieved value, its random
|
||||
since its the time signal was off before
|
||||
first pulse if idle mode is enabled, HW
|
||||
does that for us */
|
||||
|
||||
if (!enable_idle)
|
||||
continue;
|
||||
}
|
||||
update_sample(dev, hw_sample);
|
||||
send_sample(dev);
|
||||
}
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int ene_probe(struct pnp_dev *pnp_dev,
|
||||
const struct pnp_device_id *dev_id)
|
||||
{
|
||||
struct ene_device *dev;
|
||||
struct lirc_driver *lirc_driver;
|
||||
int error = -ENOMEM;
|
||||
|
||||
dev = kzalloc(sizeof(struct ene_device), GFP_KERNEL);
|
||||
|
||||
if (!dev)
|
||||
goto err1;
|
||||
|
||||
dev->pnp_dev = pnp_dev;
|
||||
pnp_set_drvdata(pnp_dev, dev);
|
||||
|
||||
|
||||
/* prepare lirc interface */
|
||||
error = -ENOMEM;
|
||||
lirc_driver = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL);
|
||||
|
||||
if (!lirc_driver)
|
||||
goto err2;
|
||||
|
||||
dev->lirc_driver = lirc_driver;
|
||||
|
||||
strcpy(lirc_driver->name, ENE_DRIVER_NAME);
|
||||
lirc_driver->minor = -1;
|
||||
lirc_driver->code_length = sizeof(int) * 8;
|
||||
lirc_driver->features = LIRC_CAN_REC_MODE2;
|
||||
lirc_driver->data = dev;
|
||||
lirc_driver->set_use_inc = ene_hw_init;
|
||||
lirc_driver->set_use_dec = ene_hw_deinit;
|
||||
lirc_driver->dev = &pnp_dev->dev;
|
||||
lirc_driver->owner = THIS_MODULE;
|
||||
|
||||
lirc_driver->rbuf = kzalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
|
||||
|
||||
if (!lirc_driver->rbuf)
|
||||
goto err3;
|
||||
|
||||
if (lirc_buffer_init(lirc_driver->rbuf, sizeof(int), sizeof(int) * 256))
|
||||
goto err4;
|
||||
|
||||
error = -ENODEV;
|
||||
if (lirc_register_driver(lirc_driver))
|
||||
goto err5;
|
||||
|
||||
/* validate resources */
|
||||
if (!pnp_port_valid(pnp_dev, 0) ||
|
||||
pnp_port_len(pnp_dev, 0) < ENE_MAX_IO)
|
||||
goto err6;
|
||||
|
||||
if (!pnp_irq_valid(pnp_dev, 0))
|
||||
goto err6;
|
||||
|
||||
dev->hw_io = pnp_port_start(pnp_dev, 0);
|
||||
dev->irq = pnp_irq(pnp_dev, 0);
|
||||
|
||||
/* claim the resources */
|
||||
error = -EBUSY;
|
||||
if (!request_region(dev->hw_io, ENE_MAX_IO, ENE_DRIVER_NAME))
|
||||
goto err6;
|
||||
|
||||
if (request_irq(dev->irq, ene_hw_irq,
|
||||
IRQF_SHARED, ENE_DRIVER_NAME, (void *)dev))
|
||||
goto err7;
|
||||
|
||||
/* detect hardware version and features */
|
||||
error = ene_hw_detect(dev);
|
||||
if (error)
|
||||
goto err8;
|
||||
|
||||
ene_printk(KERN_NOTICE, "driver has been succesfully loaded\n");
|
||||
return 0;
|
||||
|
||||
err8:
|
||||
free_irq(dev->irq, dev);
|
||||
err7:
|
||||
release_region(dev->hw_io, ENE_MAX_IO);
|
||||
err6:
|
||||
lirc_unregister_driver(lirc_driver->minor);
|
||||
err5:
|
||||
lirc_buffer_free(lirc_driver->rbuf);
|
||||
err4:
|
||||
kfree(lirc_driver->rbuf);
|
||||
err3:
|
||||
kfree(lirc_driver);
|
||||
err2:
|
||||
kfree(dev);
|
||||
err1:
|
||||
return error;
|
||||
}
|
||||
|
||||
static void ene_remove(struct pnp_dev *pnp_dev)
|
||||
{
|
||||
struct ene_device *dev = pnp_get_drvdata(pnp_dev);
|
||||
ene_hw_deinit(dev);
|
||||
free_irq(dev->irq, dev);
|
||||
release_region(dev->hw_io, ENE_MAX_IO);
|
||||
lirc_unregister_driver(dev->lirc_driver->minor);
|
||||
lirc_buffer_free(dev->lirc_driver->rbuf);
|
||||
kfree(dev->lirc_driver);
|
||||
kfree(dev);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
|
||||
/* TODO: make 'wake on IR' configurable and add .shutdown */
|
||||
/* currently impossible due to lack of kernel support */
|
||||
|
||||
static int ene_suspend(struct pnp_dev *pnp_dev, pm_message_t state)
|
||||
{
|
||||
struct ene_device *dev = pnp_get_drvdata(pnp_dev);
|
||||
ene_hw_write_reg_mask(dev, ENE_FW1, ENE_FW1_WAKE, ENE_FW1_WAKE);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ene_resume(struct pnp_dev *pnp_dev)
|
||||
{
|
||||
struct ene_device *dev = pnp_get_drvdata(pnp_dev);
|
||||
if (dev->in_use)
|
||||
ene_hw_init(dev);
|
||||
|
||||
ene_hw_write_reg_mask(dev, ENE_FW1, 0, ENE_FW1_WAKE);
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
static const struct pnp_device_id ene_ids[] = {
|
||||
{.id = "ENE0100",},
|
||||
{},
|
||||
};
|
||||
|
||||
static struct pnp_driver ene_driver = {
|
||||
.name = ENE_DRIVER_NAME,
|
||||
.id_table = ene_ids,
|
||||
.flags = PNP_DRIVER_RES_DO_NOT_CHANGE,
|
||||
|
||||
.probe = ene_probe,
|
||||
.remove = __devexit_p(ene_remove),
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
.suspend = ene_suspend,
|
||||
.resume = ene_resume,
|
||||
#endif
|
||||
};
|
||||
|
||||
static int __init ene_init(void)
|
||||
{
|
||||
if (sample_period < 5) {
|
||||
ene_printk(KERN_ERR, "sample period must be at\n");
|
||||
ene_printk(KERN_ERR, "least 5 us, (at least 30 recommended)\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
return pnp_register_driver(&ene_driver);
|
||||
}
|
||||
|
||||
static void ene_exit(void)
|
||||
{
|
||||
pnp_unregister_driver(&ene_driver);
|
||||
}
|
||||
|
||||
module_param(sample_period, int, S_IRUGO);
|
||||
MODULE_PARM_DESC(sample_period, "Hardware sample period (75 us default)");
|
||||
|
||||
module_param(enable_idle, bool, S_IRUGO | S_IWUSR);
|
||||
MODULE_PARM_DESC(enable_idle,
|
||||
"Enables turning off signal sampling after long inactivity time; "
|
||||
"if disabled might help detecting input signal (default: enabled)");
|
||||
|
||||
module_param(enable_learning, bool, S_IRUGO);
|
||||
MODULE_PARM_DESC(enable_learning, "Use wide band (learning) reciever");
|
||||
|
||||
MODULE_DEVICE_TABLE(pnp, ene_ids);
|
||||
MODULE_DESCRIPTION
|
||||
("LIRC driver for KB3926B/KB3926C/KB3926D (aka ENE0100) CIR port");
|
||||
MODULE_AUTHOR("Maxim Levitsky");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
module_init(ene_init);
|
||||
module_exit(ene_exit);
|
||||
Loading…
Reference in New Issue
Block a user