mirror of https://gitee.com/openkylin/linux.git
1024 lines
26 KiB
C
1024 lines
26 KiB
C
/*
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* driver for ENE KB3926 B/C/D CIR (pnp id: ENE0XXX)
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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/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 <linux/slab.h>
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#include <linux/input.h>
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#include <media/ir-core.h>
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#include <media/ir-common.h>
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#include "ene_ir.h"
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static int sample_period = -1;
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static int enable_idle = 1;
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static int input = 1;
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static int debug;
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static int txsim;
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static int ene_irq_status(struct ene_device *dev);
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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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u8 retval;
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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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retval = inb(dev->hw_io + ENE_IO);
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ene_dbg_verbose("reg %04x == %02x", reg, retval);
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return retval;
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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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ene_dbg_verbose("reg %04x <- %02x", reg, value);
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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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ene_dbg_verbose("reg %04x <- %02x (mask=%02x)", reg, value, mask);
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}
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/* detect hardware features */
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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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int pll_freq;
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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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pll_freq = (ene_hw_read_reg(dev, ENE_PLLFRH) << 4) +
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(ene_hw_read_reg(dev, ENE_PLLFRL) >> 4);
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if (pll_freq != 1000)
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dev->rx_period_adjust = 4;
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else
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dev->rx_period_adjust = 2;
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ene_printk(KERN_NOTICE, "PLL freq = %d\n", pll_freq);
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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\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) {
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dev->hw_revision = ENE_HW_C;
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} else if (old_ver == 0x24 && hw_revision == 0xC0) {
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dev->hw_revision = ENE_HW_B;
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ene_printk(KERN_NOTICE, "KB3926B detected\n");
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} else {
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dev->hw_revision = ENE_HW_D;
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ene_printk(KERN_WARNING,
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"unknown ENE chip detected, assuming KB3926D\n");
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ene_printk(KERN_WARNING,
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"driver support might be not complete");
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}
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ene_printk(KERN_DEBUG,
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"chip is 0x%02x%02x - kbver = 0x%02x, rev = 0x%02x\n",
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chip_major, chip_minor, old_ver, hw_revision);
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/* detect features hardware supports */
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if (dev->hw_revision < ENE_HW_C)
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return 0;
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fw_capabilities = ene_hw_read_reg(dev, ENE_FW2);
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ene_dbg("Firmware capabilities: %02x", fw_capabilities);
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dev->hw_gpio40_learning = fw_capabilities & ENE_FW2_GP40_AS_LEARN;
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dev->hw_learning_and_tx_capable = fw_capabilities & ENE_FW2_LEARNING;
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dev->hw_fan_as_normal_input = dev->hw_learning_and_tx_capable &&
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(fw_capabilities & ENE_FW2_FAN_AS_NRML_IN);
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ene_printk(KERN_NOTICE, "hardware features:\n");
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ene_printk(KERN_NOTICE,
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"learning and transmit %s, gpio40_learn %s, fan_in %s\n",
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dev->hw_learning_and_tx_capable ? "on" : "off",
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dev->hw_gpio40_learning ? "on" : "off",
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dev->hw_fan_as_normal_input ? "on" : "off");
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if (dev->hw_learning_and_tx_capable) {
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ene_printk(KERN_WARNING,
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"Device supports transmitting, but that support is\n");
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ene_printk(KERN_WARNING,
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"lightly tested. Please test it and mail\n");
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ene_printk(KERN_WARNING,
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"lirc-list@lists.sourceforge.net\n");
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}
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return 0;
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}
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/* this enables/disables IR input via gpio40*/
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static void ene_enable_gpio40_receive(struct ene_device *dev, int enable)
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{
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ene_hw_write_reg_mask(dev, ENE_CIR_CONF2, enable ?
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0 : ENE_CIR_CONF2_GPIO40DIS,
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ENE_CIR_CONF2_GPIO40DIS);
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}
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/* this enables/disables IR via standard input */
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static void ene_enable_normal_receive(struct ene_device *dev, int enable)
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{
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ene_hw_write_reg(dev, ENE_CIR_CONF1, enable ? ENE_CIR_CONF1_RX_ON : 0);
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}
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/* this enables/disables IR input via unused fan tachtometer input */
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static void ene_enable_fan_receive(struct ene_device *dev, int enable)
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{
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if (!enable)
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ene_hw_write_reg(dev, ENE_FAN_AS_IN1, 0);
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else {
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ene_hw_write_reg(dev, ENE_FAN_AS_IN1, ENE_FAN_AS_IN1_EN);
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ene_hw_write_reg(dev, ENE_FAN_AS_IN2, ENE_FAN_AS_IN2_EN);
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}
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dev->rx_fan_input_inuse = enable;
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}
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/* Sense current received carrier */
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static int ene_rx_sense_carrier(struct ene_device *dev)
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{
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int period = ene_hw_read_reg(dev, ENE_RX_CARRIER);
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int carrier;
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ene_dbg("RX: hardware carrier period = %02x", period);
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if (!(period & ENE_RX_CARRIER_VALID))
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return 0;
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period &= ~ENE_RX_CARRIER_VALID;
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if (!period)
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return 0;
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carrier = 2000000 / period;
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ene_dbg("RX: sensed carrier = %d Hz", carrier);
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return carrier;
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}
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/* determine which input to use*/
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static void ene_rx_set_inputs(struct ene_device *dev)
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{
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int learning_mode = dev->learning_enabled;
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ene_dbg("RX: setup receiver, learning mode = %d", learning_mode);
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ene_enable_normal_receive(dev, 1);
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/* old hardware doesn't support learning mode for sure */
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if (dev->hw_revision <= ENE_HW_B)
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return;
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/* receiver not learning capable, still set gpio40 correctly */
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if (!dev->hw_learning_and_tx_capable) {
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ene_enable_gpio40_receive(dev, !dev->hw_gpio40_learning);
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return;
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}
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/* enable learning mode */
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if (learning_mode) {
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ene_enable_gpio40_receive(dev, dev->hw_gpio40_learning);
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/* fan input is not used for learning */
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if (dev->hw_fan_as_normal_input)
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ene_enable_fan_receive(dev, 0);
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/* disable learning mode */
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} else {
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if (dev->hw_fan_as_normal_input) {
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ene_enable_fan_receive(dev, 1);
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ene_enable_normal_receive(dev, 0);
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} else
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ene_enable_gpio40_receive(dev,
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!dev->hw_gpio40_learning);
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}
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/* set few additional settings for this mode */
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ene_hw_write_reg_mask(dev, ENE_CIR_CONF1, learning_mode ?
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ENE_CIR_CONF1_LEARN1 : 0, ENE_CIR_CONF1_LEARN1);
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ene_hw_write_reg_mask(dev, ENE_CIR_CONF2, learning_mode ?
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ENE_CIR_CONF2_LEARN2 : 0, ENE_CIR_CONF2_LEARN2);
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if (dev->rx_fan_input_inuse) {
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dev->props->rx_resolution = ENE_SAMPLE_PERIOD_FAN * 1000;
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dev->props->timeout =
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ENE_FAN_VALUE_MASK * ENE_SAMPLE_PERIOD_FAN * 1000;
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} else {
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dev->props->rx_resolution = sample_period * 1000;
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dev->props->timeout = ENE_MAXGAP * 1000;
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}
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}
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/* Enable the device for receive */
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static void ene_rx_enable(struct ene_device *dev)
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{
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u8 reg_value;
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if (dev->hw_revision < ENE_HW_C) {
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ene_hw_write_reg(dev, ENEB_IRQ, dev->irq << 1);
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ene_hw_write_reg(dev, ENEB_IRQ_UNK1, 0x01);
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} else {
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reg_value = ene_hw_read_reg(dev, ENEC_IRQ) & 0xF0;
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reg_value |= ENEC_IRQ_UNK_EN;
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reg_value &= ~ENEC_IRQ_STATUS;
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reg_value |= (dev->irq & ENEC_IRQ_MASK);
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ene_hw_write_reg(dev, ENEC_IRQ, reg_value);
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ene_hw_write_reg(dev, ENE_TX_UNK1, 0x63);
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}
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ene_hw_write_reg(dev, ENE_CIR_CONF2, 0x00);
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ene_rx_set_inputs(dev);
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/* set sampling period */
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ene_hw_write_reg(dev, ENE_CIR_SAMPLE_PERIOD, sample_period);
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/* ack any pending irqs - just in case */
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ene_irq_status(dev);
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/* enable firmware bits */
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ene_hw_write_reg_mask(dev, ENE_FW1,
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ENE_FW1_ENABLE | ENE_FW1_IRQ,
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ENE_FW1_ENABLE | ENE_FW1_IRQ);
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/* enter idle mode */
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ir_raw_event_set_idle(dev->idev, 1);
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ir_raw_event_reset(dev->idev);
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}
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/* Disable the device receiver */
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static void ene_rx_disable(struct ene_device *dev)
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{
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/* disable inputs */
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ene_enable_normal_receive(dev, 0);
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if (dev->hw_fan_as_normal_input)
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ene_enable_fan_receive(dev, 0);
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/* disable hardware IRQ and firmware flag */
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ene_hw_write_reg_mask(dev, ENE_FW1, 0, ENE_FW1_ENABLE | ENE_FW1_IRQ);
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ir_raw_event_set_idle(dev->idev, 1);
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ir_raw_event_reset(dev->idev);
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}
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/* prepare transmission */
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static void ene_tx_prepare(struct ene_device *dev)
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{
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u8 conf1;
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conf1 = ene_hw_read_reg(dev, ENE_CIR_CONF1);
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dev->saved_conf1 = conf1;
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if (dev->hw_revision == ENE_HW_C)
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conf1 &= ~ENE_CIR_CONF1_TX_CLEAR;
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/* Enable TX engine */
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conf1 |= ENE_CIR_CONF1_TX_ON;
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/* Set carrier */
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if (dev->tx_period) {
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/* NOTE: duty cycle handling is just a guess, it might
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not be aviable. Default values were tested */
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int tx_period_in500ns = dev->tx_period * 2;
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int tx_pulse_width_in_500ns =
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tx_period_in500ns / (100 / dev->tx_duty_cycle);
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if (!tx_pulse_width_in_500ns)
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tx_pulse_width_in_500ns = 1;
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ene_dbg("TX: pulse distance = %d * 500 ns", tx_period_in500ns);
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ene_dbg("TX: pulse width = %d * 500 ns",
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tx_pulse_width_in_500ns);
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ene_hw_write_reg(dev, ENE_TX_PERIOD, ENE_TX_PERIOD_UNKBIT |
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tx_period_in500ns);
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ene_hw_write_reg(dev, ENE_TX_PERIOD_PULSE,
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tx_pulse_width_in_500ns);
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conf1 |= ENE_CIR_CONF1_TX_CARR;
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} else
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conf1 &= ~ENE_CIR_CONF1_TX_CARR;
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ene_hw_write_reg(dev, ENE_CIR_CONF1, conf1);
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}
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/* end transmission */
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static void ene_tx_complete(struct ene_device *dev)
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{
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ene_hw_write_reg(dev, ENE_CIR_CONF1, dev->saved_conf1);
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dev->tx_buffer = NULL;
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}
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/* set transmit mask */
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static void ene_tx_hw_set_transmiter_mask(struct ene_device *dev)
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{
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u8 txport1 = ene_hw_read_reg(dev, ENE_TX_PORT1) & ~ENE_TX_PORT1_EN;
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u8 txport2 = ene_hw_read_reg(dev, ENE_TX_PORT2) & ~ENE_TX_PORT2_EN;
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if (dev->transmitter_mask & 0x01)
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txport1 |= ENE_TX_PORT1_EN;
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if (dev->transmitter_mask & 0x02)
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txport2 |= ENE_TX_PORT2_EN;
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ene_hw_write_reg(dev, ENE_TX_PORT1, txport1);
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ene_hw_write_reg(dev, ENE_TX_PORT2, txport2);
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}
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/* TX one sample - must be called with dev->hw_lock*/
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static void ene_tx_sample(struct ene_device *dev)
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{
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u8 raw_tx;
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u32 sample;
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if (!dev->tx_buffer) {
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ene_dbg("TX: attempt to transmit NULL buffer");
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return;
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}
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/* Grab next TX sample */
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if (!dev->tx_sample) {
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again:
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if (dev->tx_pos == dev->tx_len + 1) {
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if (!dev->tx_done) {
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ene_dbg("TX: no more data to send");
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dev->tx_done = 1;
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goto exit;
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} else {
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ene_dbg("TX: last sample sent by hardware");
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ene_tx_complete(dev);
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complete(&dev->tx_complete);
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return;
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}
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}
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sample = dev->tx_buffer[dev->tx_pos++];
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dev->tx_sample_pulse = !dev->tx_sample_pulse;
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ene_dbg("TX: sample %8d (%s)", sample, dev->tx_sample_pulse ?
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"pulse" : "space");
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dev->tx_sample = DIV_ROUND_CLOSEST(sample, ENE_TX_SMPL_PERIOD);
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/* guard against too short samples */
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if (!dev->tx_sample)
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goto again;
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}
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raw_tx = min(dev->tx_sample , (unsigned int)ENE_TX_SMLP_MASK);
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dev->tx_sample -= raw_tx;
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if (dev->tx_sample_pulse)
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raw_tx |= ENE_TX_PULSE_MASK;
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ene_hw_write_reg(dev, ENE_TX_INPUT1 + dev->tx_reg, raw_tx);
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dev->tx_reg = !dev->tx_reg;
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exit:
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/* simulate TX done interrupt */
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if (txsim)
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mod_timer(&dev->tx_sim_timer, jiffies + HZ / 500);
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}
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/* timer to simulate tx done interrupt */
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static void ene_tx_irqsim(unsigned long data)
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{
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struct ene_device *dev = (struct ene_device *)data;
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unsigned long flags;
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spin_lock_irqsave(&dev->hw_lock, flags);
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ene_tx_sample(dev);
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spin_unlock_irqrestore(&dev->hw_lock, flags);
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}
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/* read irq status and ack it */
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static int ene_irq_status(struct ene_device *dev)
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{
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u8 irq_status;
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u8 fw_flags1, fw_flags2;
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int cur_rx_pointer;
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int retval = 0;
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fw_flags2 = ene_hw_read_reg(dev, ENE_FW2);
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cur_rx_pointer = !!(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);
|
|
|
|
if (!(irq_status & ENEB_IRQ_STATUS_IR))
|
|
return 0;
|
|
|
|
ene_hw_write_reg(dev, ENEB_IRQ_STATUS,
|
|
irq_status & ~ENEB_IRQ_STATUS_IR);
|
|
dev->rx_pointer = cur_rx_pointer;
|
|
return ENE_IRQ_RX;
|
|
}
|
|
|
|
irq_status = ene_hw_read_reg(dev, ENEC_IRQ);
|
|
|
|
if (!(irq_status & ENEC_IRQ_STATUS))
|
|
return 0;
|
|
|
|
/* original driver does that twice - a workaround ? */
|
|
ene_hw_write_reg(dev, ENEC_IRQ, irq_status & ~ENEC_IRQ_STATUS);
|
|
ene_hw_write_reg(dev, ENEC_IRQ, irq_status & ~ENEC_IRQ_STATUS);
|
|
|
|
/* clear unknown flag in F8F9 */
|
|
if (fw_flags2 & ENE_FW2_IRQ_CLR)
|
|
ene_hw_write_reg(dev, ENE_FW2, fw_flags2 & ~ENE_FW2_IRQ_CLR);
|
|
|
|
/* check if this is a TX interrupt */
|
|
fw_flags1 = ene_hw_read_reg(dev, ENE_FW1);
|
|
if (fw_flags1 & ENE_FW1_TXIRQ) {
|
|
ene_hw_write_reg(dev, ENE_FW1, fw_flags1 & ~ENE_FW1_TXIRQ);
|
|
retval |= ENE_IRQ_TX;
|
|
}
|
|
|
|
/* Check if this is RX interrupt */
|
|
if (dev->rx_pointer != cur_rx_pointer) {
|
|
retval |= ENE_IRQ_RX;
|
|
dev->rx_pointer = cur_rx_pointer;
|
|
|
|
} else if (!(retval & ENE_IRQ_TX)) {
|
|
ene_dbg("RX: interrupt without change in RX pointer(%d)",
|
|
dev->rx_pointer);
|
|
retval |= ENE_IRQ_RX;
|
|
}
|
|
|
|
if ((retval & ENE_IRQ_RX) && (retval & ENE_IRQ_TX))
|
|
ene_dbg("both RX and TX interrupt at same time");
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* interrupt handler */
|
|
static irqreturn_t ene_isr(int irq, void *data)
|
|
{
|
|
u16 hw_value;
|
|
int i, hw_sample;
|
|
int pulse;
|
|
int irq_status;
|
|
unsigned long flags;
|
|
int carrier = 0;
|
|
irqreturn_t retval = IRQ_NONE;
|
|
struct ene_device *dev = (struct ene_device *)data;
|
|
struct ir_raw_event ev;
|
|
|
|
|
|
spin_lock_irqsave(&dev->hw_lock, flags);
|
|
irq_status = ene_irq_status(dev);
|
|
|
|
if (!irq_status)
|
|
goto unlock;
|
|
|
|
retval = IRQ_HANDLED;
|
|
|
|
if (irq_status & ENE_IRQ_TX) {
|
|
|
|
if (!dev->hw_learning_and_tx_capable) {
|
|
ene_dbg("TX interrupt on unsupported device!");
|
|
goto unlock;
|
|
}
|
|
ene_tx_sample(dev);
|
|
}
|
|
|
|
if (!(irq_status & ENE_IRQ_RX))
|
|
goto unlock;
|
|
|
|
|
|
if (dev->carrier_detect_enabled || debug)
|
|
carrier = ene_rx_sense_carrier(dev);
|
|
#if 0
|
|
/* TODO */
|
|
if (dev->carrier_detect_enabled && carrier)
|
|
ir_raw_event_report_frequency(dev->idev, carrier);
|
|
#endif
|
|
|
|
for (i = 0; i < ENE_SAMPLES_SIZE; i++) {
|
|
hw_value = ene_hw_read_reg(dev,
|
|
ENE_SAMPLE_BUFFER + dev->rx_pointer * 4 + i);
|
|
|
|
if (dev->rx_fan_input_inuse) {
|
|
/* read high part of the sample */
|
|
hw_value |= ene_hw_read_reg(dev,
|
|
ENE_SAMPLE_BUFFER_FAN +
|
|
dev->rx_pointer * 4 + i) << 8;
|
|
pulse = 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 {
|
|
pulse = !(hw_value & ENE_SAMPLE_SPC_MASK);
|
|
hw_value &= ENE_SAMPLE_VALUE_MASK;
|
|
hw_sample = hw_value * sample_period;
|
|
|
|
if (dev->rx_period_adjust) {
|
|
hw_sample *= (100 - dev->rx_period_adjust);
|
|
hw_sample /= 100;
|
|
}
|
|
}
|
|
/* no more data */
|
|
if (!(hw_value))
|
|
break;
|
|
|
|
ene_dbg("RX: %d (%s)", hw_sample, pulse ? "pulse" : "space");
|
|
|
|
|
|
ev.duration = hw_sample * 1000;
|
|
ev.pulse = pulse;
|
|
ir_raw_event_store_with_filter(dev->idev, &ev);
|
|
}
|
|
|
|
ir_raw_event_handle(dev->idev);
|
|
unlock:
|
|
spin_unlock_irqrestore(&dev->hw_lock, flags);
|
|
return retval;
|
|
}
|
|
|
|
/* Initialize default settings */
|
|
static void ene_setup_settings(struct ene_device *dev)
|
|
{
|
|
dev->tx_period = 32;
|
|
dev->tx_duty_cycle = 25; /*%*/
|
|
dev->transmitter_mask = 3;
|
|
|
|
/* Force learning mode if (input == 2), otherwise
|
|
let user set it with LIRC_SET_REC_CARRIER */
|
|
dev->learning_enabled =
|
|
(input == 2 && dev->hw_learning_and_tx_capable);
|
|
|
|
dev->rx_pointer = -1;
|
|
|
|
}
|
|
|
|
/* outside interface: called on first open*/
|
|
static int ene_open(void *data)
|
|
{
|
|
struct ene_device *dev = (struct ene_device *)data;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev->hw_lock, flags);
|
|
dev->in_use = 1;
|
|
ene_setup_settings(dev);
|
|
ene_rx_enable(dev);
|
|
spin_unlock_irqrestore(&dev->hw_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/* outside interface: called on device close*/
|
|
static void ene_close(void *data)
|
|
{
|
|
struct ene_device *dev = (struct ene_device *)data;
|
|
unsigned long flags;
|
|
spin_lock_irqsave(&dev->hw_lock, flags);
|
|
|
|
ene_rx_disable(dev);
|
|
dev->in_use = 0;
|
|
spin_unlock_irqrestore(&dev->hw_lock, flags);
|
|
}
|
|
|
|
/* outside interface: set transmitter mask */
|
|
static int ene_set_tx_mask(void *data, u32 tx_mask)
|
|
{
|
|
struct ene_device *dev = (struct ene_device *)data;
|
|
unsigned long flags;
|
|
ene_dbg("TX: attempt to set transmitter mask %02x", tx_mask);
|
|
|
|
/* invalid txmask */
|
|
if (!tx_mask || tx_mask & ~0x3) {
|
|
ene_dbg("TX: invalid mask");
|
|
/* return count of transmitters */
|
|
return 2;
|
|
}
|
|
|
|
spin_lock_irqsave(&dev->hw_lock, flags);
|
|
dev->transmitter_mask = tx_mask;
|
|
spin_unlock_irqrestore(&dev->hw_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/* outside interface : set tx carrier */
|
|
static int ene_set_tx_carrier(void *data, u32 carrier)
|
|
{
|
|
struct ene_device *dev = (struct ene_device *)data;
|
|
unsigned long flags;
|
|
u32 period = 1000000 / carrier; /* (1 / freq) (* # usec in 1 sec) */
|
|
|
|
ene_dbg("TX: attempt to set tx carrier to %d kHz", carrier);
|
|
|
|
if (period && (period > ENE_TX_PERIOD_MAX ||
|
|
period < ENE_TX_PERIOD_MIN)) {
|
|
|
|
ene_dbg("TX: out of range %d-%d carrier, "
|
|
"falling back to 32 kHz",
|
|
1000 / ENE_TX_PERIOD_MIN,
|
|
1000 / ENE_TX_PERIOD_MAX);
|
|
|
|
period = 32; /* this is just a coincidence!!! */
|
|
}
|
|
ene_dbg("TX: set carrier to %d kHz", carrier);
|
|
|
|
spin_lock_irqsave(&dev->hw_lock, flags);
|
|
dev->tx_period = period;
|
|
spin_unlock_irqrestore(&dev->hw_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* outside interface: enable learning mode */
|
|
static int ene_set_learning_mode(void *data, int enable)
|
|
{
|
|
struct ene_device *dev = (struct ene_device *)data;
|
|
unsigned long flags;
|
|
if (enable == dev->learning_enabled)
|
|
return 0;
|
|
|
|
spin_lock_irqsave(&dev->hw_lock, flags);
|
|
dev->learning_enabled = enable;
|
|
ene_rx_set_inputs(dev);
|
|
spin_unlock_irqrestore(&dev->hw_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/* outside interface: set rec carrier */
|
|
static int ene_set_rec_carrier(void *data, u32 min, u32 max)
|
|
{
|
|
struct ene_device *dev = (struct ene_device *)data;
|
|
ene_set_learning_mode(dev,
|
|
max > ENE_NORMAL_RX_HI || min < ENE_NORMAL_RX_LOW);
|
|
return 0;
|
|
}
|
|
|
|
/* outside interface: enable or disable idle mode */
|
|
static void ene_rx_set_idle(void *data, int idle)
|
|
{
|
|
struct ene_device *dev = (struct ene_device *)data;
|
|
ene_dbg("%sabling idle mode", idle ? "en" : "dis");
|
|
|
|
ene_hw_write_reg_mask(dev, ENE_CIR_SAMPLE_PERIOD,
|
|
(enable_idle && idle) ? 0 : ENE_CIR_SAMPLE_OVERFLOW,
|
|
ENE_CIR_SAMPLE_OVERFLOW);
|
|
}
|
|
|
|
|
|
/* outside interface: transmit */
|
|
static int ene_transmit(void *data, int *buf, u32 n)
|
|
{
|
|
struct ene_device *dev = (struct ene_device *)data;
|
|
unsigned long flags;
|
|
|
|
dev->tx_buffer = buf;
|
|
dev->tx_len = n / sizeof(int);
|
|
dev->tx_pos = 0;
|
|
dev->tx_reg = 0;
|
|
dev->tx_done = 0;
|
|
dev->tx_sample = 0;
|
|
dev->tx_sample_pulse = 0;
|
|
|
|
ene_dbg("TX: %d samples", dev->tx_len);
|
|
|
|
spin_lock_irqsave(&dev->hw_lock, flags);
|
|
|
|
ene_tx_hw_set_transmiter_mask(dev);
|
|
ene_tx_prepare(dev);
|
|
|
|
/* Transmit first two samples */
|
|
ene_tx_sample(dev);
|
|
ene_tx_sample(dev);
|
|
|
|
spin_unlock_irqrestore(&dev->hw_lock, flags);
|
|
|
|
if (wait_for_completion_timeout(&dev->tx_complete, 2 * HZ) == 0) {
|
|
ene_dbg("TX: timeout");
|
|
spin_lock_irqsave(&dev->hw_lock, flags);
|
|
ene_tx_complete(dev);
|
|
spin_unlock_irqrestore(&dev->hw_lock, flags);
|
|
} else
|
|
ene_dbg("TX: done");
|
|
return n;
|
|
}
|
|
|
|
|
|
/* probe entry */
|
|
static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
|
|
{
|
|
int error = -ENOMEM;
|
|
struct ir_dev_props *ir_props;
|
|
struct input_dev *input_dev;
|
|
struct ene_device *dev;
|
|
|
|
/* allocate memory */
|
|
input_dev = input_allocate_device();
|
|
ir_props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL);
|
|
dev = kzalloc(sizeof(struct ene_device), GFP_KERNEL);
|
|
|
|
if (!input_dev || !ir_props || !dev)
|
|
goto error;
|
|
|
|
/* validate resources */
|
|
error = -ENODEV;
|
|
|
|
if (!pnp_port_valid(pnp_dev, 0) ||
|
|
pnp_port_len(pnp_dev, 0) < ENE_MAX_IO)
|
|
goto error;
|
|
|
|
if (!pnp_irq_valid(pnp_dev, 0))
|
|
goto error;
|
|
|
|
dev->hw_io = pnp_port_start(pnp_dev, 0);
|
|
dev->irq = pnp_irq(pnp_dev, 0);
|
|
spin_lock_init(&dev->hw_lock);
|
|
|
|
/* claim the resources */
|
|
error = -EBUSY;
|
|
if (!request_region(dev->hw_io, ENE_MAX_IO, ENE_DRIVER_NAME))
|
|
goto error;
|
|
|
|
if (request_irq(dev->irq, ene_isr,
|
|
IRQF_SHARED, ENE_DRIVER_NAME, (void *)dev))
|
|
goto error;
|
|
|
|
pnp_set_drvdata(pnp_dev, dev);
|
|
dev->pnp_dev = pnp_dev;
|
|
|
|
/* detect hardware version and features */
|
|
error = ene_hw_detect(dev);
|
|
if (error)
|
|
goto error;
|
|
|
|
ene_setup_settings(dev);
|
|
|
|
if (!dev->hw_learning_and_tx_capable && txsim) {
|
|
dev->hw_learning_and_tx_capable = 1;
|
|
setup_timer(&dev->tx_sim_timer, ene_tx_irqsim,
|
|
(long unsigned int)dev);
|
|
ene_printk(KERN_WARNING,
|
|
"Simulation of TX activated\n");
|
|
}
|
|
|
|
ir_props->driver_type = RC_DRIVER_IR_RAW;
|
|
ir_props->allowed_protos = IR_TYPE_ALL;
|
|
ir_props->priv = dev;
|
|
ir_props->open = ene_open;
|
|
ir_props->close = ene_close;
|
|
ir_props->min_timeout = ENE_MINGAP * 1000;
|
|
ir_props->max_timeout = ENE_MAXGAP * 1000;
|
|
ir_props->timeout = ENE_MAXGAP * 1000;
|
|
|
|
if (dev->hw_revision == ENE_HW_B)
|
|
ir_props->s_idle = ene_rx_set_idle;
|
|
|
|
|
|
dev->props = ir_props;
|
|
dev->idev = input_dev;
|
|
|
|
/* don't allow too short/long sample periods */
|
|
if (sample_period < 5 || sample_period > 0x7F)
|
|
sample_period = -1;
|
|
|
|
/* choose default sample period */
|
|
if (sample_period == -1) {
|
|
|
|
sample_period = 50;
|
|
|
|
/* on revB, hardware idle mode eats first sample
|
|
if we set too low sample period */
|
|
if (dev->hw_revision == ENE_HW_B && enable_idle)
|
|
sample_period = 75;
|
|
}
|
|
|
|
ir_props->rx_resolution = sample_period * 1000;
|
|
|
|
if (dev->hw_learning_and_tx_capable) {
|
|
|
|
ir_props->s_learning_mode = ene_set_learning_mode;
|
|
|
|
if (input == 0)
|
|
ir_props->s_rx_carrier_range = ene_set_rec_carrier;
|
|
|
|
init_completion(&dev->tx_complete);
|
|
ir_props->tx_ir = ene_transmit;
|
|
ir_props->s_tx_mask = ene_set_tx_mask;
|
|
ir_props->s_tx_carrier = ene_set_tx_carrier;
|
|
ir_props->tx_resolution = ENE_TX_SMPL_PERIOD * 1000;
|
|
/* ir_props->s_carrier_report = ene_set_carrier_report; */
|
|
}
|
|
|
|
|
|
device_set_wakeup_capable(&pnp_dev->dev, 1);
|
|
device_set_wakeup_enable(&pnp_dev->dev, 1);
|
|
|
|
if (dev->hw_learning_and_tx_capable)
|
|
input_dev->name = "ENE eHome Infrared Remote Transceiver";
|
|
else
|
|
input_dev->name = "ENE eHome Infrared Remote Receiver";
|
|
|
|
|
|
error = -ENODEV;
|
|
if (ir_input_register(input_dev, RC_MAP_RC6_MCE, ir_props,
|
|
ENE_DRIVER_NAME))
|
|
goto error;
|
|
|
|
|
|
ene_printk(KERN_NOTICE, "driver has been succesfully loaded\n");
|
|
return 0;
|
|
error:
|
|
if (dev->irq)
|
|
free_irq(dev->irq, dev);
|
|
if (dev->hw_io)
|
|
release_region(dev->hw_io, ENE_MAX_IO);
|
|
|
|
input_free_device(input_dev);
|
|
kfree(ir_props);
|
|
kfree(dev);
|
|
return error;
|
|
}
|
|
|
|
/* main unload function */
|
|
static void ene_remove(struct pnp_dev *pnp_dev)
|
|
{
|
|
struct ene_device *dev = pnp_get_drvdata(pnp_dev);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev->hw_lock, flags);
|
|
ene_rx_disable(dev);
|
|
spin_unlock_irqrestore(&dev->hw_lock, flags);
|
|
|
|
free_irq(dev->irq, dev);
|
|
release_region(dev->hw_io, ENE_MAX_IO);
|
|
ir_input_unregister(dev->idev);
|
|
kfree(dev->props);
|
|
kfree(dev);
|
|
}
|
|
|
|
/* enable wake on IR (wakes on specific button on original remote) */
|
|
static void ene_enable_wake(struct ene_device *dev, int enable)
|
|
{
|
|
enable = enable && device_may_wakeup(&dev->pnp_dev->dev);
|
|
|
|
ene_dbg("wake on IR %s", enable ? "enabled" : "disabled");
|
|
|
|
ene_hw_write_reg_mask(dev, ENE_FW1, enable ?
|
|
ENE_FW1_WAKE : 0, ENE_FW1_WAKE);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ene_suspend(struct pnp_dev *pnp_dev, pm_message_t state)
|
|
{
|
|
struct ene_device *dev = pnp_get_drvdata(pnp_dev);
|
|
ene_enable_wake(dev, 1);
|
|
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_rx_enable(dev);
|
|
|
|
ene_enable_wake(dev, 0);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static void ene_shutdown(struct pnp_dev *pnp_dev)
|
|
{
|
|
struct ene_device *dev = pnp_get_drvdata(pnp_dev);
|
|
ene_enable_wake(dev, 1);
|
|
}
|
|
|
|
static const struct pnp_device_id ene_ids[] = {
|
|
{.id = "ENE0100",},
|
|
{.id = "ENE0200",},
|
|
{.id = "ENE0201",},
|
|
{.id = "ENE0202",},
|
|
{},
|
|
};
|
|
|
|
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
|
|
.shutdown = ene_shutdown,
|
|
};
|
|
|
|
static int __init ene_init(void)
|
|
{
|
|
return pnp_register_driver(&ene_driver);
|
|
}
|
|
|
|
static void ene_exit(void)
|
|
{
|
|
pnp_unregister_driver(&ene_driver);
|
|
}
|
|
|
|
module_param(sample_period, int, S_IRUGO);
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MODULE_PARM_DESC(sample_period, "Hardware sample period (50 us default)");
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module_param(enable_idle, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(enable_idle,
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"Enables turning off signal sampling after long inactivity time; "
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"if disabled might help detecting input signal (default: enabled)"
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" (KB3926B only)");
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module_param(input, bool, S_IRUGO);
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MODULE_PARM_DESC(input, "select which input to use "
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"0 - auto, 1 - standard, 2 - wideband(KB3926C+)");
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module_param(debug, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(debug, "Enable debug (debug=2 verbose debug output)");
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module_param(txsim, bool, S_IRUGO);
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MODULE_PARM_DESC(txsim,
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"Simulate TX features on unsupported hardware (dangerous)");
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MODULE_DEVICE_TABLE(pnp, ene_ids);
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MODULE_DESCRIPTION
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("Infrared input driver for KB3926B/KB3926C/KB3926D "
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"(aka ENE0100/ENE0200/ENE0201) CIR port");
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MODULE_AUTHOR("Maxim Levitsky");
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MODULE_LICENSE("GPL");
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module_init(ene_init);
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module_exit(ene_exit);
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