/* * * Device driver for GPIO attached remote control interfaces * on Conexant 2388x based TV/DVB cards. * * Copyright (c) 2003 Pavel Machek * Copyright (c) 2004 Gerd Knorr * Copyright (c) 2004, 2005 Chris Pascoe * * 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/init.h> #include <linux/delay.h> #include <linux/input.h> #include <linux/pci.h> #include <linux/module.h> #include "cx88.h" #include <media/ir-common.h> /* ---------------------------------------------------------------------- */ struct cx88_IR { struct cx88_core *core; struct input_dev *input; struct ir_input_state ir; char name[32]; char phys[32]; /* sample from gpio pin 16 */ u32 sampling; u32 samples[16]; int scount; unsigned long release; /* poll external decoder */ int polling; struct work_struct work; struct timer_list timer; u32 gpio_addr; u32 last_gpio; u32 mask_keycode; u32 mask_keydown; u32 mask_keyup; }; static int ir_debug = 0; module_param(ir_debug, int, 0644); /* debug level [IR] */ MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]"); #define ir_dprintk(fmt, arg...) if (ir_debug) \ printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg) /* ---------------------------------------------------------------------- */ static void cx88_ir_handle_key(struct cx88_IR *ir) { struct cx88_core *core = ir->core; u32 gpio, data, auxgpio; /* read gpio value */ gpio = cx_read(ir->gpio_addr); switch (core->boardnr) { case CX88_BOARD_NPGTECH_REALTV_TOP10FM: /* This board apparently uses a combination of 2 GPIO to represent the keys. Additionally, the second GPIO can be used for parity. Example: for key "5" gpio = 0x758, auxgpio = 0xe5 or 0xf5 for key "Power" gpio = 0x758, auxgpio = 0xed or 0xfd */ auxgpio = cx_read(MO_GP1_IO); /* Take out the parity part */ gpio=(gpio & 0x7fd) + (auxgpio & 0xef); break; case CX88_BOARD_WINFAST_DTV1000: gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900); auxgpio = gpio; break; default: auxgpio = gpio; } if (ir->polling) { if (ir->last_gpio == auxgpio) return; ir->last_gpio = auxgpio; } /* extract data */ data = ir_extract_bits(gpio, ir->mask_keycode); ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n", gpio, data, ir->polling ? "poll" : "irq", (gpio & ir->mask_keydown) ? " down" : "", (gpio & ir->mask_keyup) ? " up" : ""); if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) { u32 gpio_key = cx_read(MO_GP0_IO); data = (data << 4) | ((gpio_key & 0xf0) >> 4); ir_input_keydown(ir->input, &ir->ir, data, data); ir_input_nokey(ir->input, &ir->ir); } else if (ir->mask_keydown) { /* bit set on keydown */ if (gpio & ir->mask_keydown) { ir_input_keydown(ir->input, &ir->ir, data, data); } else { ir_input_nokey(ir->input, &ir->ir); } } else if (ir->mask_keyup) { /* bit cleared on keydown */ if (0 == (gpio & ir->mask_keyup)) { ir_input_keydown(ir->input, &ir->ir, data, data); } else { ir_input_nokey(ir->input, &ir->ir); } } else { /* can't distinguish keydown/up :-/ */ ir_input_keydown(ir->input, &ir->ir, data, data); ir_input_nokey(ir->input, &ir->ir); } } static void ir_timer(unsigned long data) { struct cx88_IR *ir = (struct cx88_IR *)data; schedule_work(&ir->work); } static void cx88_ir_work(struct work_struct *work) { struct cx88_IR *ir = container_of(work, struct cx88_IR, work); cx88_ir_handle_key(ir); mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling)); } void cx88_ir_start(struct cx88_core *core, struct cx88_IR *ir) { if (ir->polling) { setup_timer(&ir->timer, ir_timer, (unsigned long)ir); INIT_WORK(&ir->work, cx88_ir_work); schedule_work(&ir->work); } if (ir->sampling) { core->pci_irqmask |= PCI_INT_IR_SMPINT; cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */ cx_write(MO_DDSCFG_IO, 0x5); /* enable */ } } void cx88_ir_stop(struct cx88_core *core, struct cx88_IR *ir) { if (ir->sampling) { cx_write(MO_DDSCFG_IO, 0x0); core->pci_irqmask &= ~PCI_INT_IR_SMPINT; } if (ir->polling) { del_timer_sync(&ir->timer); flush_scheduled_work(); } } /* ---------------------------------------------------------------------- */ int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci) { struct cx88_IR *ir; struct input_dev *input_dev; IR_KEYTAB_TYPE *ir_codes = NULL; int ir_type = IR_TYPE_OTHER; int err = -ENOMEM; ir = kzalloc(sizeof(*ir), GFP_KERNEL); input_dev = input_allocate_device(); if (!ir || !input_dev) goto err_out_free; ir->input = input_dev; /* detect & configure */ switch (core->boardnr) { case CX88_BOARD_DNTV_LIVE_DVB_T: case CX88_BOARD_KWORLD_DVB_T: case CX88_BOARD_KWORLD_DVB_T_CX22702: ir_codes = ir_codes_dntv_live_dvb_t; ir->gpio_addr = MO_GP1_IO; ir->mask_keycode = 0x1f; ir->mask_keyup = 0x60; ir->polling = 50; /* ms */ break; case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1: ir_codes = ir_codes_cinergy_1400; ir_type = IR_TYPE_PD; ir->sampling = 0xeb04; /* address */ break; case CX88_BOARD_HAUPPAUGE: case CX88_BOARD_HAUPPAUGE_DVB_T1: case CX88_BOARD_HAUPPAUGE_NOVASE2_S1: case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1: case CX88_BOARD_HAUPPAUGE_HVR1100: case CX88_BOARD_HAUPPAUGE_HVR3000: ir_codes = ir_codes_hauppauge_new; ir_type = IR_TYPE_RC5; ir->sampling = 1; break; case CX88_BOARD_WINFAST_DTV2000H: ir_codes = ir_codes_winfast; ir->gpio_addr = MO_GP0_IO; ir->mask_keycode = 0x8f8; ir->mask_keyup = 0x100; ir->polling = 50; /* ms */ break; case CX88_BOARD_WINFAST2000XP_EXPERT: case CX88_BOARD_WINFAST_DTV1000: ir_codes = ir_codes_winfast; ir->gpio_addr = MO_GP0_IO; ir->mask_keycode = 0x8f8; ir->mask_keyup = 0x100; ir->polling = 1; /* ms */ break; case CX88_BOARD_IODATA_GVBCTV7E: ir_codes = ir_codes_iodata_bctv7e; ir->gpio_addr = MO_GP0_IO; ir->mask_keycode = 0xfd; ir->mask_keydown = 0x02; ir->polling = 5; /* ms */ break; case CX88_BOARD_PROLINK_PLAYTVPVR: case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO: ir_codes = ir_codes_pixelview; ir->gpio_addr = MO_GP1_IO; ir->mask_keycode = 0x1f; ir->mask_keyup = 0x80; ir->polling = 1; /* ms */ break; case CX88_BOARD_KWORLD_LTV883: ir_codes = ir_codes_pixelview; ir->gpio_addr = MO_GP1_IO; ir->mask_keycode = 0x1f; ir->mask_keyup = 0x60; ir->polling = 1; /* ms */ break; case CX88_BOARD_ADSTECH_DVB_T_PCI: ir_codes = ir_codes_adstech_dvb_t_pci; ir->gpio_addr = MO_GP1_IO; ir->mask_keycode = 0xbf; ir->mask_keyup = 0x40; ir->polling = 50; /* ms */ break; case CX88_BOARD_MSI_TVANYWHERE_MASTER: ir_codes = ir_codes_msi_tvanywhere; ir->gpio_addr = MO_GP1_IO; ir->mask_keycode = 0x1f; ir->mask_keyup = 0x40; ir->polling = 1; /* ms */ break; case CX88_BOARD_AVERTV_303: case CX88_BOARD_AVERTV_STUDIO_303: ir_codes = ir_codes_avertv_303; ir->gpio_addr = MO_GP2_IO; ir->mask_keycode = 0xfb; ir->mask_keydown = 0x02; ir->polling = 50; /* ms */ break; case CX88_BOARD_DNTV_LIVE_DVB_T_PRO: ir_codes = ir_codes_dntv_live_dvbt_pro; ir_type = IR_TYPE_PD; ir->sampling = 0xff00; /* address */ break; case CX88_BOARD_NORWOOD_MICRO: ir_codes = ir_codes_norwood; ir->gpio_addr = MO_GP1_IO; ir->mask_keycode = 0x0e; ir->mask_keyup = 0x80; ir->polling = 50; /* ms */ break; case CX88_BOARD_NPGTECH_REALTV_TOP10FM: ir_codes = ir_codes_npgtech; ir->gpio_addr = MO_GP0_IO; ir->mask_keycode = 0xfa; ir->polling = 50; /* ms */ break; } if (NULL == ir_codes) { err = -ENODEV; goto err_out_free; } /* init input device */ snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name); snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci)); ir_input_init(input_dev, &ir->ir, ir_type, ir_codes); input_dev->name = ir->name; input_dev->phys = ir->phys; input_dev->id.bustype = BUS_PCI; input_dev->id.version = 1; if (pci->subsystem_vendor) { input_dev->id.vendor = pci->subsystem_vendor; input_dev->id.product = pci->subsystem_device; } else { input_dev->id.vendor = pci->vendor; input_dev->id.product = pci->device; } input_dev->dev.parent = &pci->dev; /* record handles to ourself */ ir->core = core; core->ir = ir; cx88_ir_start(core, ir); /* all done */ err = input_register_device(ir->input); if (err) goto err_out_stop; return 0; err_out_stop: cx88_ir_stop(core, ir); core->ir = NULL; err_out_free: input_free_device(input_dev); kfree(ir); return err; } int cx88_ir_fini(struct cx88_core *core) { struct cx88_IR *ir = core->ir; /* skip detach on non attached boards */ if (NULL == ir) return 0; cx88_ir_stop(core, ir); input_unregister_device(ir->input); kfree(ir); /* done */ core->ir = NULL; return 0; } /* ---------------------------------------------------------------------- */ void cx88_ir_irq(struct cx88_core *core) { struct cx88_IR *ir = core->ir; u32 samples, ircode; int i; if (NULL == ir) return; if (!ir->sampling) return; samples = cx_read(MO_SAMPLE_IO); if (0 != samples && 0xffffffff != samples) { /* record sample data */ if (ir->scount < ARRAY_SIZE(ir->samples)) ir->samples[ir->scount++] = samples; return; } if (!ir->scount) { /* nothing to sample */ if (ir->ir.keypressed && time_after(jiffies, ir->release)) ir_input_nokey(ir->input, &ir->ir); return; } /* have a complete sample */ if (ir->scount < ARRAY_SIZE(ir->samples)) ir->samples[ir->scount++] = samples; for (i = 0; i < ir->scount; i++) ir->samples[i] = ~ir->samples[i]; if (ir_debug) ir_dump_samples(ir->samples, ir->scount); /* decode it */ switch (core->boardnr) { case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1: case CX88_BOARD_DNTV_LIVE_DVB_T_PRO: ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4); if (ircode == 0xffffffff) { /* decoding error */ ir_dprintk("pulse distance decoding error\n"); break; } ir_dprintk("pulse distance decoded: %x\n", ircode); if (ircode == 0) { /* key still pressed */ ir_dprintk("pulse distance decoded repeat code\n"); ir->release = jiffies + msecs_to_jiffies(120); break; } if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */ ir_dprintk("pulse distance decoded wrong address\n"); break; } if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */ ir_dprintk("pulse distance decoded wrong check sum\n"); break; } ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f); ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff); ir->release = jiffies + msecs_to_jiffies(120); break; case CX88_BOARD_HAUPPAUGE: case CX88_BOARD_HAUPPAUGE_DVB_T1: case CX88_BOARD_HAUPPAUGE_NOVASE2_S1: case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1: case CX88_BOARD_HAUPPAUGE_HVR1100: case CX88_BOARD_HAUPPAUGE_HVR3000: ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7); ir_dprintk("biphase decoded: %x\n", ircode); if ((ircode & 0xfffff000) != 0x3000) break; ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f, ircode); ir->release = jiffies + msecs_to_jiffies(120); break; } ir->scount = 0; return; } /* ---------------------------------------------------------------------- */ MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe"); MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls"); MODULE_LICENSE("GPL"); /* * Local variables: * c-basic-offset: 8 * End: */