diff options
Diffstat (limited to 'drivers/media/pci/ttpci/av7110_ir.c')
| -rw-r--r-- | drivers/media/pci/ttpci/av7110_ir.c | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/drivers/media/pci/ttpci/av7110_ir.c b/drivers/media/pci/ttpci/av7110_ir.c new file mode 100644 index 000000000..ee414803e --- /dev/null +++ b/drivers/media/pci/ttpci/av7110_ir.c @@ -0,0 +1,395 @@ +/* + * Driver for the remote control of SAA7146 based AV7110 cards + * + * Copyright (C) 1999-2003 Holger Waechtler <holger@convergence.de> + * Copyright (C) 2003-2007 Oliver Endriss <o.endriss@gmx.de> + * + * 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. + * To obtain the license, point your browser to + * http://www.gnu.org/copyleft/gpl.html + * + */ + + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/proc_fs.h> +#include <linux/kernel.h> +#include <linux/bitops.h> + +#include "av7110.h" +#include "av7110_hw.h" + + +#define AV_CNT 4 + +#define IR_RC5 0 +#define IR_RCMM 1 +#define IR_RC5_EXT 2 /* internal only */ + +#define IR_ALL 0xffffffff + +#define UP_TIMEOUT (HZ*7/25) + + +/* Note: enable ir debugging by or'ing debug with 16 */ + +static int ir_protocol[AV_CNT] = { IR_RCMM, IR_RCMM, IR_RCMM, IR_RCMM}; +module_param_array(ir_protocol, int, NULL, 0644); +MODULE_PARM_DESC(ir_protocol, "Infrared protocol: 0 RC5, 1 RCMM (default)"); + +static int ir_inversion[AV_CNT]; +module_param_array(ir_inversion, int, NULL, 0644); +MODULE_PARM_DESC(ir_inversion, "Inversion of infrared signal: 0 not inverted (default), 1 inverted"); + +static uint ir_device_mask[AV_CNT] = { IR_ALL, IR_ALL, IR_ALL, IR_ALL }; +module_param_array(ir_device_mask, uint, NULL, 0644); +MODULE_PARM_DESC(ir_device_mask, "Bitmask of infrared devices: bit 0..31 = device 0..31 (default: all)"); + + +static int av_cnt; +static struct av7110 *av_list[AV_CNT]; + +static u16 default_key_map [256] = { + KEY_0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, + KEY_8, KEY_9, KEY_BACK, 0, KEY_POWER, KEY_MUTE, 0, KEY_INFO, + KEY_VOLUMEUP, KEY_VOLUMEDOWN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + KEY_CHANNELUP, KEY_CHANNELDOWN, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, KEY_TEXT, 0, 0, KEY_TV, 0, 0, 0, 0, 0, KEY_SETUP, 0, 0, + 0, 0, 0, KEY_SUBTITLE, 0, 0, KEY_LANGUAGE, 0, + KEY_RADIO, 0, 0, 0, 0, KEY_EXIT, 0, 0, + KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, KEY_OK, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_RED, KEY_GREEN, KEY_YELLOW, + KEY_BLUE, 0, 0, 0, 0, 0, 0, 0, KEY_MENU, KEY_LIST, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, KEY_UP, KEY_UP, KEY_DOWN, KEY_DOWN, + 0, 0, 0, 0, KEY_EPG, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_VCR +}; + + +/* key-up timer */ +static void av7110_emit_keyup(struct timer_list *t) +{ + struct infrared *ir = from_timer(ir, t, keyup_timer); + + if (!ir || !ir->keypressed) + return; + + input_report_key(ir->input_dev, ir->last_key, 0); + input_sync(ir->input_dev); + ir->keypressed = false; +} + + +/* tasklet */ +static void av7110_emit_key(unsigned long parm) +{ + struct infrared *ir = (struct infrared *) parm; + u32 ircom = ir->ir_command; + u8 data; + u8 addr; + u16 toggle; + u16 keycode; + + /* extract device address and data */ + switch (ir->protocol) { + case IR_RC5: /* RC5: 5 bits device address, 6 bits data */ + data = ircom & 0x3f; + addr = (ircom >> 6) & 0x1f; + toggle = ircom & 0x0800; + break; + + case IR_RCMM: /* RCMM: ? bits device address, ? bits data */ + data = ircom & 0xff; + addr = (ircom >> 8) & 0x1f; + toggle = ircom & 0x8000; + break; + + case IR_RC5_EXT: /* extended RC5: 5 bits device address, 7 bits data */ + data = ircom & 0x3f; + addr = (ircom >> 6) & 0x1f; + /* invert 7th data bit for backward compatibility with RC5 keymaps */ + if (!(ircom & 0x1000)) + data |= 0x40; + toggle = ircom & 0x0800; + break; + + default: + printk("%s invalid protocol %x\n", __func__, ir->protocol); + return; + } + + input_event(ir->input_dev, EV_MSC, MSC_RAW, (addr << 16) | data); + input_event(ir->input_dev, EV_MSC, MSC_SCAN, data); + + keycode = ir->key_map[data]; + + dprintk(16, "%s: code %08x -> addr %i data 0x%02x -> keycode %i\n", + __func__, ircom, addr, data, keycode); + + /* check device address */ + if (!(ir->device_mask & (1 << addr))) + return; + + if (!keycode) { + printk ("%s: code %08x -> addr %i data 0x%02x -> unknown key!\n", + __func__, ircom, addr, data); + return; + } + + if (ir->keypressed && + (ir->last_key != keycode || toggle != ir->last_toggle)) + input_event(ir->input_dev, EV_KEY, ir->last_key, 0); + + input_event(ir->input_dev, EV_KEY, keycode, 1); + input_sync(ir->input_dev); + + ir->keypressed = true; + ir->last_key = keycode; + ir->last_toggle = toggle; + + mod_timer(&ir->keyup_timer, jiffies + UP_TIMEOUT); +} + + +/* register with input layer */ +static void input_register_keys(struct infrared *ir) +{ + int i; + + set_bit(EV_KEY, ir->input_dev->evbit); + set_bit(EV_REP, ir->input_dev->evbit); + set_bit(EV_MSC, ir->input_dev->evbit); + + set_bit(MSC_RAW, ir->input_dev->mscbit); + set_bit(MSC_SCAN, ir->input_dev->mscbit); + + memset(ir->input_dev->keybit, 0, sizeof(ir->input_dev->keybit)); + + for (i = 0; i < ARRAY_SIZE(ir->key_map); i++) { + if (ir->key_map[i] > KEY_MAX) + ir->key_map[i] = 0; + else if (ir->key_map[i] > KEY_RESERVED) + set_bit(ir->key_map[i], ir->input_dev->keybit); + } + + ir->input_dev->keycode = ir->key_map; + ir->input_dev->keycodesize = sizeof(ir->key_map[0]); + ir->input_dev->keycodemax = ARRAY_SIZE(ir->key_map); +} + +/* check for configuration changes */ +int av7110_check_ir_config(struct av7110 *av7110, int force) +{ + int i; + int modified = force; + int ret = -ENODEV; + + for (i = 0; i < av_cnt; i++) + if (av7110 == av_list[i]) + break; + + if (i < av_cnt && av7110) { + if ((av7110->ir.protocol & 1) != ir_protocol[i] || + av7110->ir.inversion != ir_inversion[i]) + modified = true; + + if (modified) { + /* protocol */ + if (ir_protocol[i]) { + ir_protocol[i] = 1; + av7110->ir.protocol = IR_RCMM; + av7110->ir.ir_config = 0x0001; + } else if (FW_VERSION(av7110->arm_app) >= 0x2620) { + av7110->ir.protocol = IR_RC5_EXT; + av7110->ir.ir_config = 0x0002; + } else { + av7110->ir.protocol = IR_RC5; + av7110->ir.ir_config = 0x0000; + } + /* inversion */ + if (ir_inversion[i]) { + ir_inversion[i] = 1; + av7110->ir.ir_config |= 0x8000; + } + av7110->ir.inversion = ir_inversion[i]; + /* update ARM */ + ret = av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetIR, 1, + av7110->ir.ir_config); + } else + ret = 0; + + /* address */ + if (av7110->ir.device_mask != ir_device_mask[i]) + av7110->ir.device_mask = ir_device_mask[i]; + } + + return ret; +} + + +/* /proc/av7110_ir interface */ +static ssize_t av7110_ir_proc_write(struct file *file, const char __user *buffer, + size_t count, loff_t *pos) +{ + char *page; + u32 ir_config; + int size = sizeof ir_config + sizeof av_list[0]->ir.key_map; + int i; + + if (count < size) + return -EINVAL; + + page = vmalloc(size); + if (!page) + return -ENOMEM; + + if (copy_from_user(page, buffer, size)) { + vfree(page); + return -EFAULT; + } + + memcpy(&ir_config, page, sizeof ir_config); + + for (i = 0; i < av_cnt; i++) { + /* keymap */ + memcpy(av_list[i]->ir.key_map, page + sizeof ir_config, + sizeof(av_list[i]->ir.key_map)); + /* protocol, inversion, address */ + ir_protocol[i] = ir_config & 0x0001; + ir_inversion[i] = ir_config & 0x8000 ? 1 : 0; + if (ir_config & 0x4000) + ir_device_mask[i] = 1 << ((ir_config >> 16) & 0x1f); + else + ir_device_mask[i] = IR_ALL; + /* update configuration */ + av7110_check_ir_config(av_list[i], false); + input_register_keys(&av_list[i]->ir); + } + vfree(page); + return count; +} + +static const struct file_operations av7110_ir_proc_fops = { + .owner = THIS_MODULE, + .write = av7110_ir_proc_write, + .llseek = noop_llseek, +}; + +/* interrupt handler */ +static void ir_handler(struct av7110 *av7110, u32 ircom) +{ + dprintk(4, "ir command = %08x\n", ircom); + av7110->ir.ir_command = ircom; + tasklet_schedule(&av7110->ir.ir_tasklet); +} + + +int av7110_ir_init(struct av7110 *av7110) +{ + struct input_dev *input_dev; + static struct proc_dir_entry *e; + int err; + + if (av_cnt >= ARRAY_SIZE(av_list)) + return -ENOSPC; + + av_list[av_cnt++] = av7110; + av7110_check_ir_config(av7110, true); + + timer_setup(&av7110->ir.keyup_timer, av7110_emit_keyup, 0); + + input_dev = input_allocate_device(); + if (!input_dev) + return -ENOMEM; + + av7110->ir.input_dev = input_dev; + snprintf(av7110->ir.input_phys, sizeof(av7110->ir.input_phys), + "pci-%s/ir0", pci_name(av7110->dev->pci)); + + input_dev->name = "DVB on-card IR receiver"; + + input_dev->phys = av7110->ir.input_phys; + input_dev->id.bustype = BUS_PCI; + input_dev->id.version = 2; + if (av7110->dev->pci->subsystem_vendor) { + input_dev->id.vendor = av7110->dev->pci->subsystem_vendor; + input_dev->id.product = av7110->dev->pci->subsystem_device; + } else { + input_dev->id.vendor = av7110->dev->pci->vendor; + input_dev->id.product = av7110->dev->pci->device; + } + input_dev->dev.parent = &av7110->dev->pci->dev; + /* initial keymap */ + memcpy(av7110->ir.key_map, default_key_map, sizeof av7110->ir.key_map); + input_register_keys(&av7110->ir); + err = input_register_device(input_dev); + if (err) { + input_free_device(input_dev); + return err; + } + + /* + * Input core's default autorepeat is 33 cps with 250 msec + * delay, let's adjust to numbers more suitable for remote + * control. + */ + input_enable_softrepeat(input_dev, 250, 125); + + if (av_cnt == 1) { + e = proc_create("av7110_ir", S_IWUSR, NULL, &av7110_ir_proc_fops); + if (e) + proc_set_size(e, 4 + 256 * sizeof(u16)); + } + + tasklet_init(&av7110->ir.ir_tasklet, av7110_emit_key, (unsigned long) &av7110->ir); + av7110->ir.ir_handler = ir_handler; + + return 0; +} + + +void av7110_ir_exit(struct av7110 *av7110) +{ + int i; + + if (av_cnt == 0) + return; + + del_timer_sync(&av7110->ir.keyup_timer); + av7110->ir.ir_handler = NULL; + tasklet_kill(&av7110->ir.ir_tasklet); + + for (i = 0; i < av_cnt; i++) + if (av_list[i] == av7110) { + av_list[i] = av_list[av_cnt-1]; + av_list[av_cnt-1] = NULL; + break; + } + + if (av_cnt == 1) + remove_proc_entry("av7110_ir", NULL); + + input_unregister_device(av7110->ir.input_dev); + + av_cnt--; +} + +//MODULE_AUTHOR("Holger Waechtler <holger@convergence.de>, Oliver Endriss <o.endriss@gmx.de>"); +//MODULE_LICENSE("GPL"); |