diff options
Diffstat (limited to 'drivers/media/IR/ene_ir.h')
| -rw-r--r-- | drivers/media/IR/ene_ir.h | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/drivers/media/IR/ene_ir.h b/drivers/media/IR/ene_ir.h new file mode 100644 index 0000000..54c76af --- /dev/null +++ b/drivers/media/IR/ene_ir.h @@ -0,0 +1,235 @@ +/* + * driver for ENE KB3926 B/C/D CIR (also known as ENE0XXX) + * + * Copyright (C) 2010 Maxim Levitsky <maximlevitsky@gmail.com> + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ +#include <linux/spinlock.h> + + +/* hardware address */ +#define ENE_STATUS 0 /* hardware status - unused */ +#define ENE_ADDR_HI 1 /* hi byte of register address */ +#define ENE_ADDR_LO 2 /* low byte of register address */ +#define ENE_IO 3 /* read/write window */ +#define ENE_MAX_IO 4 + +/* 8 bytes of samples, divided in 2 halfs*/ +#define ENE_SAMPLE_BUFFER 0xF8F0 /* regular sample buffer */ +#define ENE_SAMPLE_SPC_MASK 0x80 /* sample is space */ +#define ENE_SAMPLE_VALUE_MASK 0x7F +#define ENE_SAMPLE_OVERFLOW 0x7F +#define ENE_SAMPLES_SIZE 4 + +/* fan input sample buffer */ +#define ENE_SAMPLE_BUFFER_FAN 0xF8FB /* this buffer holds high byte of */ + /* each sample of normal buffer */ +#define ENE_FAN_SMPL_PULS_MSK 0x8000 /* this bit of combined sample */ + /* if set, says that sample is pulse */ +#define ENE_FAN_VALUE_MASK 0x0FFF /* mask for valid bits of the value */ + +/* first firmware register */ +#define ENE_FW1 0xF8F8 +#define ENE_FW1_ENABLE 0x01 /* enable fw processing */ +#define ENE_FW1_TXIRQ 0x02 /* TX interrupt pending */ +#define ENE_FW1_WAKE 0x40 /* enable wake from S3 */ +#define ENE_FW1_IRQ 0x80 /* enable interrupt */ + +/* second firmware register */ +#define ENE_FW2 0xF8F9 +#define ENE_FW2_BUF_HIGH 0x01 /* which half of the buffer to read */ +#define ENE_FW2_IRQ_CLR 0x04 /* clear this on IRQ */ +#define ENE_FW2_GP40_AS_LEARN 0x08 /* normal input is used as */ + /* learning input */ +#define ENE_FW2_FAN_AS_NRML_IN 0x40 /* fan is used as normal input */ +#define ENE_FW2_LEARNING 0x80 /* hardware supports learning and TX */ + +/* transmitter ports */ +#define ENE_TX_PORT2 0xFC01 /* this enables one or both */ +#define ENE_TX_PORT2_EN 0x20 /* TX ports */ +#define ENE_TX_PORT1 0xFC08 +#define ENE_TX_PORT1_EN 0x02 + +/* IRQ registers block (for revision B) */ +#define ENEB_IRQ 0xFD09 /* IRQ number */ +#define ENEB_IRQ_UNK1 0xFD17 /* unknown setting = 1 */ +#define ENEB_IRQ_STATUS 0xFD80 /* irq status */ +#define ENEB_IRQ_STATUS_IR 0x20 /* IR irq */ + +/* fan as input settings - only if learning capable */ +#define ENE_FAN_AS_IN1 0xFE30 /* fan init reg 1 */ +#define ENE_FAN_AS_IN1_EN 0xCD +#define ENE_FAN_AS_IN2 0xFE31 /* fan init reg 2 */ +#define ENE_FAN_AS_IN2_EN 0x03 +#define ENE_SAMPLE_PERIOD_FAN 61 /* fan input has fixed sample period */ + +/* IRQ registers block (for revision C,D) */ +#define ENEC_IRQ 0xFE9B /* new irq settings register */ +#define ENEC_IRQ_MASK 0x0F /* irq number mask */ +#define ENEC_IRQ_UNK_EN 0x10 /* always enabled */ +#define ENEC_IRQ_STATUS 0x20 /* irq status and ACK */ + +/* CIR block settings */ +#define ENE_CIR_CONF1 0xFEC0 +#define ENE_CIR_CONF1_TX_CLEAR 0x01 /* clear that on revC */ + /* while transmitting */ +#define ENE_CIR_CONF1_RX_ON 0x07 /* normal receiver enabled */ +#define ENE_CIR_CONF1_LEARN1 0x08 /* enabled on learning mode */ +#define ENE_CIR_CONF1_TX_ON 0x30 /* enabled on transmit */ +#define ENE_CIR_CONF1_TX_CARR 0x80 /* send TX carrier or not */ + +#define ENE_CIR_CONF2 0xFEC1 /* unknown setting = 0 */ +#define ENE_CIR_CONF2_LEARN2 0x10 /* set on enable learning */ +#define ENE_CIR_CONF2_GPIO40DIS 0x20 /* disable input via gpio40 */ + +#define ENE_CIR_SAMPLE_PERIOD 0xFEC8 /* sample period in us */ +#define ENE_CIR_SAMPLE_OVERFLOW 0x80 /* interrupt on overflows if set */ + + +/* Two byte tx buffer */ +#define ENE_TX_INPUT1 0xFEC9 +#define ENE_TX_INPUT2 0xFECA +#define ENE_TX_PULSE_MASK 0x80 /* Transmitted sample is pulse */ +#define ENE_TX_SMLP_MASK 0x7F +#define ENE_TX_SMPL_PERIOD 50 /* transmit sample period - fixed */ + + +/* Unknown TX setting - TX sample period ??? */ +#define ENE_TX_UNK1 0xFECB /* set to 0x63 */ + +/* Current received carrier period */ +#define ENE_RX_CARRIER 0xFECC /* RX period (500 ns) */ +#define ENE_RX_CARRIER_VALID 0x80 /* Register content valid */ + + +/* TX period (1/carrier) */ +#define ENE_TX_PERIOD 0xFECE /* TX period (500 ns) */ +#define ENE_TX_PERIOD_UNKBIT 0x80 /* This bit set on transmit*/ +#define ENE_TX_PERIOD_PULSE 0xFECF /* TX pulse period (500 ns)*/ + +/* Hardware versions */ +#define ENE_HW_VERSION 0xFF00 /* hardware revision */ +#define ENE_PLLFRH 0xFF16 +#define ENE_PLLFRL 0xFF17 + +#define ENE_HW_UNK 0xFF1D +#define ENE_HW_UNK_CLR 0x04 +#define ENE_HW_VER_MAJOR 0xFF1E /* chip version */ +#define ENE_HW_VER_MINOR 0xFF1F +#define ENE_HW_VER_OLD 0xFD00 + +/* Normal/Learning carrier ranges - only valid if we have learning input*/ +/* TODO: test */ +#define ENE_NORMAL_RX_LOW 34 +#define ENE_NORMAL_RX_HI 38 + +/* Tx carrier range */ +/* Hardware might be able to do more, but this range is enough for + all purposes */ +#define ENE_TX_PERIOD_MAX 32 /* corresponds to 29.4 kHz */ +#define ENE_TX_PERIOD_MIN 16 /* corrsponds to 62.5 kHz */ + + + +/* Minimal and maximal gaps */ + +/* Normal case: + Minimal gap is 0x7F * sample period + Maximum gap depends on hardware. + For KB3926B, it is unlimited, for newer models its around + 250000, after which HW stops sending samples, and that is + not possible to change */ + +/* Fan case: + Both minimal and maximal gaps are same, and equal to 0xFFF * 0x61 + And there is nothing to change this setting +*/ + +#define ENE_MAXGAP 250000 +#define ENE_MINGAP (127 * sample_period) + +/******************************************************************************/ + +#define ENE_DRIVER_NAME "ene_ir" + +#define ENE_IRQ_RX 1 +#define ENE_IRQ_TX 2 + +#define ENE_HW_B 1 /* 3926B */ +#define ENE_HW_C 2 /* 3926C */ +#define ENE_HW_D 3 /* 3926D */ + +#define ene_printk(level, text, ...) \ + printk(level ENE_DRIVER_NAME ": " text, ## __VA_ARGS__) + +#define ene_dbg(text, ...) \ + if (debug) \ + printk(KERN_DEBUG \ + ENE_DRIVER_NAME ": " text "\n" , ## __VA_ARGS__) + +#define ene_dbg_verbose(text, ...) \ + if (debug > 1) \ + printk(KERN_DEBUG \ + ENE_DRIVER_NAME ": " text "\n" , ## __VA_ARGS__) + + +struct ene_device { + struct pnp_dev *pnp_dev; + struct input_dev *idev; + struct ir_dev_props *props; + int in_use; + + /* hw IO settings */ + unsigned long hw_io; + int irq; + spinlock_t hw_lock; + + /* HW features */ + int hw_revision; /* hardware revision */ + bool hw_learning_and_tx_capable; /* learning capable */ + bool hw_gpio40_learning; /* gpio40 is learning */ + bool hw_fan_as_normal_input; /* fan input is used as */ + /* regular input */ + /* HW state*/ + int rx_pointer; /* hw pointer to rx buffer */ + bool rx_fan_input_inuse; /* is fan input in use for rx*/ + int tx_reg; /* current reg used for TX */ + u8 saved_conf1; /* saved FEC0 reg */ + + /* TX sample handling */ + unsigned int tx_sample; /* current sample for TX */ + bool tx_sample_pulse; /* current sample is pulse */ + + /* TX buffer */ + int *tx_buffer; /* input samples buffer*/ + int tx_pos; /* position in that bufer */ + int tx_len; /* current len of tx buffer */ + int tx_done; /* done transmitting */ + /* one more sample pending*/ + struct completion tx_complete; /* TX completion */ + struct timer_list tx_sim_timer; + + /* TX settings */ + int tx_period; + int tx_duty_cycle; + int transmitter_mask; + + /* RX settings */ + bool learning_enabled; /* learning input enabled */ + bool carrier_detect_enabled; /* carrier detect enabled */ + int rx_period_adjust; +}; |
