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651 lines
16 KiB
651 lines
16 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* |
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* Device driver for GPIO attached remote control interfaces |
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* on Conexant 2388x based TV/DVB cards. |
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* |
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* Copyright (c) 2003 Pavel Machek |
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* Copyright (c) 2004 Gerd Knorr |
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* Copyright (c) 2004, 2005 Chris Pascoe |
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*/ |
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|
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#include "cx88.h" |
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#include <linux/init.h> |
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#include <linux/hrtimer.h> |
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#include <linux/pci.h> |
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#include <linux/slab.h> |
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#include <linux/module.h> |
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#include <media/rc-core.h> |
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#define MODULE_NAME "cx88xx" |
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/* ---------------------------------------------------------------------- */ |
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struct cx88_IR { |
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struct cx88_core *core; |
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struct rc_dev *dev; |
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int users; |
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char name[32]; |
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char phys[32]; |
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/* sample from gpio pin 16 */ |
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u32 sampling; |
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/* poll external decoder */ |
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int polling; |
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struct hrtimer timer; |
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u32 gpio_addr; |
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u32 last_gpio; |
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u32 mask_keycode; |
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u32 mask_keydown; |
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u32 mask_keyup; |
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}; |
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static unsigned int ir_samplerate = 4; |
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module_param(ir_samplerate, uint, 0444); |
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MODULE_PARM_DESC(ir_samplerate, "IR samplerate in kHz, 1 - 20, default 4"); |
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static int ir_debug; |
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module_param(ir_debug, int, 0644); /* debug level [IR] */ |
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MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]"); |
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#define ir_dprintk(fmt, arg...) do { \ |
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if (ir_debug) \ |
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printk(KERN_DEBUG "%s IR: " fmt, ir->core->name, ##arg);\ |
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} while (0) |
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#define dprintk(fmt, arg...) do { \ |
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if (ir_debug) \ |
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printk(KERN_DEBUG "cx88 IR: " fmt, ##arg); \ |
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} while (0) |
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/* ---------------------------------------------------------------------- */ |
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static void cx88_ir_handle_key(struct cx88_IR *ir) |
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{ |
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struct cx88_core *core = ir->core; |
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u32 gpio, data, auxgpio; |
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/* read gpio value */ |
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gpio = cx_read(ir->gpio_addr); |
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switch (core->boardnr) { |
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case CX88_BOARD_NPGTECH_REALTV_TOP10FM: |
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/* |
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* This board apparently uses a combination of 2 GPIO |
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* to represent the keys. Additionally, the second GPIO |
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* can be used for parity. |
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* |
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* Example: |
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* |
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* for key "5" |
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* gpio = 0x758, auxgpio = 0xe5 or 0xf5 |
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* for key "Power" |
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* gpio = 0x758, auxgpio = 0xed or 0xfd |
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*/ |
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auxgpio = cx_read(MO_GP1_IO); |
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/* Take out the parity part */ |
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gpio = (gpio & 0x7fd) + (auxgpio & 0xef); |
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break; |
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case CX88_BOARD_WINFAST_DTV1000: |
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case CX88_BOARD_WINFAST_DTV1800H: |
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case CX88_BOARD_WINFAST_DTV1800H_XC4000: |
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case CX88_BOARD_WINFAST_DTV2000H_PLUS: |
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case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL: |
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case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36: |
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case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43: |
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gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900); |
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auxgpio = gpio; |
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break; |
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default: |
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auxgpio = gpio; |
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} |
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if (ir->polling) { |
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if (ir->last_gpio == auxgpio) |
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return; |
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ir->last_gpio = auxgpio; |
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} |
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/* extract data */ |
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data = ir_extract_bits(gpio, ir->mask_keycode); |
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ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n", |
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gpio, data, |
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ir->polling ? "poll" : "irq", |
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(gpio & ir->mask_keydown) ? " down" : "", |
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(gpio & ir->mask_keyup) ? " up" : ""); |
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if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) { |
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u32 gpio_key = cx_read(MO_GP0_IO); |
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data = (data << 4) | ((gpio_key & 0xf0) >> 4); |
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rc_keydown(ir->dev, RC_PROTO_UNKNOWN, data, 0); |
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} else if (ir->core->boardnr == CX88_BOARD_PROLINK_PLAYTVPVR || |
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ir->core->boardnr == CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO) { |
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/* bit cleared on keydown, NEC scancode, 0xAAAACC, A = 0x866b */ |
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u16 addr; |
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u8 cmd; |
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u32 scancode; |
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addr = (data >> 8) & 0xffff; |
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cmd = (data >> 0) & 0x00ff; |
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scancode = RC_SCANCODE_NECX(addr, cmd); |
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if (0 == (gpio & ir->mask_keyup)) |
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rc_keydown_notimeout(ir->dev, RC_PROTO_NECX, scancode, |
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0); |
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else |
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rc_keyup(ir->dev); |
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} else if (ir->mask_keydown) { |
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/* bit set on keydown */ |
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if (gpio & ir->mask_keydown) |
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rc_keydown_notimeout(ir->dev, RC_PROTO_UNKNOWN, data, |
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0); |
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else |
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rc_keyup(ir->dev); |
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} else if (ir->mask_keyup) { |
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/* bit cleared on keydown */ |
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if (0 == (gpio & ir->mask_keyup)) |
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rc_keydown_notimeout(ir->dev, RC_PROTO_UNKNOWN, data, |
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0); |
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else |
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rc_keyup(ir->dev); |
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} else { |
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/* can't distinguish keydown/up :-/ */ |
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rc_keydown_notimeout(ir->dev, RC_PROTO_UNKNOWN, data, 0); |
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rc_keyup(ir->dev); |
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} |
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} |
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static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer) |
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{ |
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u64 missed; |
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struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer); |
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cx88_ir_handle_key(ir); |
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missed = hrtimer_forward_now(&ir->timer, |
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ktime_set(0, ir->polling * 1000000)); |
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if (missed > 1) |
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ir_dprintk("Missed ticks %llu\n", missed - 1); |
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return HRTIMER_RESTART; |
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} |
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static int __cx88_ir_start(void *priv) |
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{ |
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struct cx88_core *core = priv; |
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struct cx88_IR *ir; |
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if (!core || !core->ir) |
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return -EINVAL; |
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ir = core->ir; |
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if (ir->polling) { |
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hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); |
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ir->timer.function = cx88_ir_work; |
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hrtimer_start(&ir->timer, |
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ktime_set(0, ir->polling * 1000000), |
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HRTIMER_MODE_REL); |
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} |
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if (ir->sampling) { |
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core->pci_irqmask |= PCI_INT_IR_SMPINT; |
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cx_write(MO_DDS_IO, 0x33F286 * ir_samplerate); /* samplerate */ |
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cx_write(MO_DDSCFG_IO, 0x5); /* enable */ |
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} |
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return 0; |
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} |
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static void __cx88_ir_stop(void *priv) |
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{ |
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struct cx88_core *core = priv; |
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struct cx88_IR *ir; |
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if (!core || !core->ir) |
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return; |
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ir = core->ir; |
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if (ir->sampling) { |
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cx_write(MO_DDSCFG_IO, 0x0); |
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core->pci_irqmask &= ~PCI_INT_IR_SMPINT; |
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} |
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if (ir->polling) |
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hrtimer_cancel(&ir->timer); |
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} |
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int cx88_ir_start(struct cx88_core *core) |
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{ |
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if (core->ir->users) |
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return __cx88_ir_start(core); |
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return 0; |
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} |
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EXPORT_SYMBOL(cx88_ir_start); |
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void cx88_ir_stop(struct cx88_core *core) |
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{ |
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if (core->ir->users) |
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__cx88_ir_stop(core); |
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} |
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EXPORT_SYMBOL(cx88_ir_stop); |
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static int cx88_ir_open(struct rc_dev *rc) |
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{ |
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struct cx88_core *core = rc->priv; |
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core->ir->users++; |
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return __cx88_ir_start(core); |
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} |
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static void cx88_ir_close(struct rc_dev *rc) |
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{ |
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struct cx88_core *core = rc->priv; |
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core->ir->users--; |
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if (!core->ir->users) |
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__cx88_ir_stop(core); |
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} |
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/* ---------------------------------------------------------------------- */ |
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int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci) |
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{ |
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struct cx88_IR *ir; |
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struct rc_dev *dev; |
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char *ir_codes = NULL; |
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u64 rc_proto = RC_PROTO_BIT_OTHER; |
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int err = -ENOMEM; |
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u32 hardware_mask = 0; /* For devices with a hardware mask, when |
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* used with a full-code IR table |
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*/ |
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ir = kzalloc(sizeof(*ir), GFP_KERNEL); |
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dev = rc_allocate_device(RC_DRIVER_IR_RAW); |
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if (!ir || !dev) |
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goto err_out_free; |
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ir->dev = dev; |
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/* detect & configure */ |
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switch (core->boardnr) { |
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case CX88_BOARD_DNTV_LIVE_DVB_T: |
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case CX88_BOARD_KWORLD_DVB_T: |
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case CX88_BOARD_KWORLD_DVB_T_CX22702: |
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ir_codes = RC_MAP_DNTV_LIVE_DVB_T; |
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ir->gpio_addr = MO_GP1_IO; |
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ir->mask_keycode = 0x1f; |
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ir->mask_keyup = 0x60; |
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ir->polling = 50; /* ms */ |
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break; |
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case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1: |
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ir_codes = RC_MAP_CINERGY_1400; |
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ir->sampling = 0xeb04; /* address */ |
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break; |
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case CX88_BOARD_HAUPPAUGE: |
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case CX88_BOARD_HAUPPAUGE_DVB_T1: |
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case CX88_BOARD_HAUPPAUGE_NOVASE2_S1: |
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case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1: |
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case CX88_BOARD_HAUPPAUGE_HVR1100: |
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case CX88_BOARD_HAUPPAUGE_HVR3000: |
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case CX88_BOARD_HAUPPAUGE_HVR4000: |
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case CX88_BOARD_HAUPPAUGE_HVR4000LITE: |
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case CX88_BOARD_PCHDTV_HD3000: |
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case CX88_BOARD_PCHDTV_HD5500: |
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case CX88_BOARD_HAUPPAUGE_IRONLY: |
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ir_codes = RC_MAP_HAUPPAUGE; |
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ir->sampling = 1; |
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break; |
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case CX88_BOARD_WINFAST_DTV2000H: |
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case CX88_BOARD_WINFAST_DTV2000H_J: |
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case CX88_BOARD_WINFAST_DTV1800H: |
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case CX88_BOARD_WINFAST_DTV1800H_XC4000: |
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case CX88_BOARD_WINFAST_DTV2000H_PLUS: |
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ir_codes = RC_MAP_WINFAST; |
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ir->gpio_addr = MO_GP0_IO; |
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ir->mask_keycode = 0x8f8; |
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ir->mask_keyup = 0x100; |
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ir->polling = 50; /* ms */ |
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break; |
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case CX88_BOARD_WINFAST2000XP_EXPERT: |
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case CX88_BOARD_WINFAST_DTV1000: |
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case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL: |
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case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36: |
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case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43: |
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ir_codes = RC_MAP_WINFAST; |
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ir->gpio_addr = MO_GP0_IO; |
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ir->mask_keycode = 0x8f8; |
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ir->mask_keyup = 0x100; |
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ir->polling = 1; /* ms */ |
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break; |
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case CX88_BOARD_IODATA_GVBCTV7E: |
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ir_codes = RC_MAP_IODATA_BCTV7E; |
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ir->gpio_addr = MO_GP0_IO; |
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ir->mask_keycode = 0xfd; |
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ir->mask_keydown = 0x02; |
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ir->polling = 5; /* ms */ |
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break; |
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case CX88_BOARD_PROLINK_PLAYTVPVR: |
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case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO: |
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/* |
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* It seems that this hardware is paired with NEC extended |
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* address 0x866b. So, unfortunately, its usage with other |
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* IR's with different address won't work. Still, there are |
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* other IR's from the same manufacturer that works, like the |
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* 002-T mini RC, provided with newer PV hardware |
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*/ |
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ir_codes = RC_MAP_PIXELVIEW_MK12; |
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rc_proto = RC_PROTO_BIT_NECX; |
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ir->gpio_addr = MO_GP1_IO; |
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ir->mask_keyup = 0x80; |
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ir->polling = 10; /* ms */ |
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hardware_mask = 0x3f; /* Hardware returns only 6 bits from command part */ |
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break; |
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case CX88_BOARD_PROLINK_PV_8000GT: |
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case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME: |
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ir_codes = RC_MAP_PIXELVIEW_NEW; |
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ir->gpio_addr = MO_GP1_IO; |
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ir->mask_keycode = 0x3f; |
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ir->mask_keyup = 0x80; |
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ir->polling = 1; /* ms */ |
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break; |
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case CX88_BOARD_KWORLD_LTV883: |
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ir_codes = RC_MAP_PIXELVIEW; |
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ir->gpio_addr = MO_GP1_IO; |
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ir->mask_keycode = 0x1f; |
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ir->mask_keyup = 0x60; |
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ir->polling = 1; /* ms */ |
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break; |
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case CX88_BOARD_ADSTECH_DVB_T_PCI: |
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ir_codes = RC_MAP_ADSTECH_DVB_T_PCI; |
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ir->gpio_addr = MO_GP1_IO; |
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ir->mask_keycode = 0xbf; |
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ir->mask_keyup = 0x40; |
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ir->polling = 50; /* ms */ |
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break; |
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case CX88_BOARD_MSI_TVANYWHERE_MASTER: |
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ir_codes = RC_MAP_MSI_TVANYWHERE; |
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ir->gpio_addr = MO_GP1_IO; |
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ir->mask_keycode = 0x1f; |
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ir->mask_keyup = 0x40; |
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ir->polling = 1; /* ms */ |
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break; |
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case CX88_BOARD_AVERTV_303: |
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case CX88_BOARD_AVERTV_STUDIO_303: |
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ir_codes = RC_MAP_AVERTV_303; |
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ir->gpio_addr = MO_GP2_IO; |
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ir->mask_keycode = 0xfb; |
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ir->mask_keydown = 0x02; |
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ir->polling = 50; /* ms */ |
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break; |
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case CX88_BOARD_OMICOM_SS4_PCI: |
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case CX88_BOARD_SATTRADE_ST4200: |
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case CX88_BOARD_TBS_8920: |
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case CX88_BOARD_TBS_8910: |
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case CX88_BOARD_PROF_7300: |
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case CX88_BOARD_PROF_7301: |
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case CX88_BOARD_PROF_6200: |
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ir_codes = RC_MAP_TBS_NEC; |
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ir->sampling = 0xff00; /* address */ |
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break; |
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case CX88_BOARD_TEVII_S464: |
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case CX88_BOARD_TEVII_S460: |
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case CX88_BOARD_TEVII_S420: |
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ir_codes = RC_MAP_TEVII_NEC; |
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ir->sampling = 0xff00; /* address */ |
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break; |
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case CX88_BOARD_DNTV_LIVE_DVB_T_PRO: |
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ir_codes = RC_MAP_DNTV_LIVE_DVBT_PRO; |
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ir->sampling = 0xff00; /* address */ |
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break; |
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case CX88_BOARD_NORWOOD_MICRO: |
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ir_codes = RC_MAP_NORWOOD; |
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ir->gpio_addr = MO_GP1_IO; |
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ir->mask_keycode = 0x0e; |
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ir->mask_keyup = 0x80; |
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ir->polling = 50; /* ms */ |
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break; |
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case CX88_BOARD_NPGTECH_REALTV_TOP10FM: |
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ir_codes = RC_MAP_NPGTECH; |
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ir->gpio_addr = MO_GP0_IO; |
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ir->mask_keycode = 0xfa; |
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ir->polling = 50; /* ms */ |
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break; |
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case CX88_BOARD_PINNACLE_PCTV_HD_800i: |
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ir_codes = RC_MAP_PINNACLE_PCTV_HD; |
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ir->sampling = 1; |
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break; |
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case CX88_BOARD_POWERCOLOR_REAL_ANGEL: |
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ir_codes = RC_MAP_POWERCOLOR_REAL_ANGEL; |
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ir->gpio_addr = MO_GP2_IO; |
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ir->mask_keycode = 0x7e; |
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ir->polling = 100; /* ms */ |
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break; |
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case CX88_BOARD_TWINHAN_VP1027_DVBS: |
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ir_codes = RC_MAP_TWINHAN_VP1027_DVBS; |
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ir->sampling = 0xff00; /* address */ |
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break; |
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} |
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|
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if (!ir_codes) { |
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err = -ENODEV; |
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goto err_out_free; |
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} |
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|
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/* |
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* The usage of mask_keycode were very convenient, due to several |
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* reasons. Among others, the scancode tables were using the scancode |
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* as the index elements. So, the less bits it was used, the smaller |
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* the table were stored. After the input changes, the better is to use |
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* the full scancodes, since it allows replacing the IR remote by |
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* another one. Unfortunately, there are still some hardware, like |
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* Pixelview Ultra Pro, where only part of the scancode is sent via |
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* GPIO. So, there's no way to get the full scancode. Due to that, |
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* hardware_mask were introduced here: it represents those hardware |
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* that has such limits. |
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*/ |
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if (hardware_mask && !ir->mask_keycode) |
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ir->mask_keycode = hardware_mask; |
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|
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/* init input device */ |
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snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name); |
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snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci)); |
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|
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dev->device_name = ir->name; |
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dev->input_phys = ir->phys; |
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dev->input_id.bustype = BUS_PCI; |
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dev->input_id.version = 1; |
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if (pci->subsystem_vendor) { |
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dev->input_id.vendor = pci->subsystem_vendor; |
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dev->input_id.product = pci->subsystem_device; |
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} else { |
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dev->input_id.vendor = pci->vendor; |
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dev->input_id.product = pci->device; |
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} |
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dev->dev.parent = &pci->dev; |
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dev->map_name = ir_codes; |
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dev->driver_name = MODULE_NAME; |
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dev->priv = core; |
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dev->open = cx88_ir_open; |
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dev->close = cx88_ir_close; |
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dev->scancode_mask = hardware_mask; |
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|
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if (ir->sampling) { |
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dev->timeout = MS_TO_US(10); /* 10 ms */ |
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} else { |
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dev->driver_type = RC_DRIVER_SCANCODE; |
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dev->allowed_protocols = rc_proto; |
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} |
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ir->core = core; |
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core->ir = ir; |
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|
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/* all done */ |
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err = rc_register_device(dev); |
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if (err) |
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goto err_out_free; |
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|
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return 0; |
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err_out_free: |
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rc_free_device(dev); |
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core->ir = NULL; |
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kfree(ir); |
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return err; |
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} |
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|
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int cx88_ir_fini(struct cx88_core *core) |
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{ |
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struct cx88_IR *ir = core->ir; |
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|
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/* skip detach on non attached boards */ |
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if (!ir) |
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return 0; |
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|
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cx88_ir_stop(core); |
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rc_unregister_device(ir->dev); |
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kfree(ir); |
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|
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/* done */ |
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core->ir = NULL; |
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return 0; |
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} |
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|
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/* ---------------------------------------------------------------------- */ |
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|
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void cx88_ir_irq(struct cx88_core *core) |
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{ |
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struct cx88_IR *ir = core->ir; |
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u32 samples; |
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unsigned int todo, bits; |
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struct ir_raw_event ev = {}; |
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|
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if (!ir || !ir->sampling) |
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return; |
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|
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/* |
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* Samples are stored in a 32 bit register, oldest sample in |
|
* the msb. A set bit represents space and an unset bit |
|
* represents a pulse. |
|
*/ |
|
samples = cx_read(MO_SAMPLE_IO); |
|
|
|
if (samples == 0xff && ir->dev->idle) |
|
return; |
|
|
|
for (todo = 32; todo > 0; todo -= bits) { |
|
ev.pulse = samples & 0x80000000 ? false : true; |
|
bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples)); |
|
ev.duration = (bits * (USEC_PER_SEC / 1000)) / ir_samplerate; |
|
ir_raw_event_store_with_filter(ir->dev, &ev); |
|
samples <<= bits; |
|
} |
|
ir_raw_event_handle(ir->dev); |
|
} |
|
|
|
static int get_key_pvr2000(struct IR_i2c *ir, enum rc_proto *protocol, |
|
u32 *scancode, u8 *toggle) |
|
{ |
|
int flags, code; |
|
|
|
/* poll IR chip */ |
|
flags = i2c_smbus_read_byte_data(ir->c, 0x10); |
|
if (flags < 0) { |
|
dprintk("read error\n"); |
|
return 0; |
|
} |
|
/* key pressed ? */ |
|
if (0 == (flags & 0x80)) |
|
return 0; |
|
|
|
/* read actual key code */ |
|
code = i2c_smbus_read_byte_data(ir->c, 0x00); |
|
if (code < 0) { |
|
dprintk("read error\n"); |
|
return 0; |
|
} |
|
|
|
dprintk("IR Key/Flags: (0x%02x/0x%02x)\n", |
|
code & 0xff, flags & 0xff); |
|
|
|
*protocol = RC_PROTO_UNKNOWN; |
|
*scancode = code & 0xff; |
|
*toggle = 0; |
|
return 1; |
|
} |
|
|
|
void cx88_i2c_init_ir(struct cx88_core *core) |
|
{ |
|
struct i2c_board_info info; |
|
static const unsigned short default_addr_list[] = { |
|
0x18, 0x6b, 0x71, |
|
I2C_CLIENT_END |
|
}; |
|
static const unsigned short pvr2000_addr_list[] = { |
|
0x18, 0x1a, |
|
I2C_CLIENT_END |
|
}; |
|
const unsigned short *addr_list = default_addr_list; |
|
const unsigned short *addrp; |
|
/* Instantiate the IR receiver device, if present */ |
|
if (core->i2c_rc != 0) |
|
return; |
|
|
|
memset(&info, 0, sizeof(struct i2c_board_info)); |
|
strscpy(info.type, "ir_video", I2C_NAME_SIZE); |
|
|
|
switch (core->boardnr) { |
|
case CX88_BOARD_LEADTEK_PVR2000: |
|
addr_list = pvr2000_addr_list; |
|
core->init_data.name = "cx88 Leadtek PVR 2000 remote"; |
|
core->init_data.type = RC_PROTO_BIT_UNKNOWN; |
|
core->init_data.get_key = get_key_pvr2000; |
|
core->init_data.ir_codes = RC_MAP_EMPTY; |
|
break; |
|
} |
|
|
|
/* |
|
* We can't call i2c_new_scanned_device() because it uses |
|
* quick writes for probing and at least some RC receiver |
|
* devices only reply to reads. |
|
* Also, Hauppauge XVR needs to be specified, as address 0x71 |
|
* conflicts with another remote type used with saa7134 |
|
*/ |
|
for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) { |
|
info.platform_data = NULL; |
|
memset(&core->init_data, 0, sizeof(core->init_data)); |
|
|
|
if (*addrp == 0x71) { |
|
/* Hauppauge Z8F0811 */ |
|
strscpy(info.type, "ir_z8f0811_haup", I2C_NAME_SIZE); |
|
core->init_data.name = core->board.name; |
|
core->init_data.ir_codes = RC_MAP_HAUPPAUGE; |
|
core->init_data.type = RC_PROTO_BIT_RC5 | |
|
RC_PROTO_BIT_RC6_MCE | RC_PROTO_BIT_RC6_6A_32; |
|
core->init_data.internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR; |
|
|
|
info.platform_data = &core->init_data; |
|
} |
|
if (i2c_smbus_xfer(&core->i2c_adap, *addrp, 0, |
|
I2C_SMBUS_READ, 0, |
|
I2C_SMBUS_QUICK, NULL) >= 0) { |
|
info.addr = *addrp; |
|
i2c_new_client_device(&core->i2c_adap, &info); |
|
break; |
|
} |
|
} |
|
} |
|
|
|
/* ---------------------------------------------------------------------- */ |
|
|
|
MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe"); |
|
MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls"); |
|
MODULE_LICENSE("GPL");
|
|
|