linux_dsm_epyc7002/drivers/media/pci/smipcie/smipcie-ir.c
Thomas Gleixner c942fddf87 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
Based on 3 normalized pattern(s):

  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

  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 [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] 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

  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 [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] 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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:37 -07:00

181 lines
4.0 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* SMI PCIe driver for DVBSky cards.
*
* Copyright (C) 2014 Max nibble <nibble.max@gmail.com>
*/
#include "smipcie.h"
#define SMI_SAMPLE_PERIOD 83
#define SMI_SAMPLE_IDLEMIN (10000 / SMI_SAMPLE_PERIOD)
static void smi_ir_enableInterrupt(struct smi_rc *ir)
{
struct smi_dev *dev = ir->dev;
smi_write(MSI_INT_ENA_SET, IR_X_INT);
}
static void smi_ir_disableInterrupt(struct smi_rc *ir)
{
struct smi_dev *dev = ir->dev;
smi_write(MSI_INT_ENA_CLR, IR_X_INT);
}
static void smi_ir_clearInterrupt(struct smi_rc *ir)
{
struct smi_dev *dev = ir->dev;
smi_write(MSI_INT_STATUS_CLR, IR_X_INT);
}
static void smi_ir_stop(struct smi_rc *ir)
{
struct smi_dev *dev = ir->dev;
smi_ir_disableInterrupt(ir);
smi_clear(IR_Init_Reg, rbIRen);
}
static void smi_raw_process(struct rc_dev *rc_dev, const u8 *buffer,
const u8 length)
{
struct ir_raw_event rawir = {};
int cnt;
for (cnt = 0; cnt < length; cnt++) {
if (buffer[cnt] & 0x7f) {
rawir.pulse = (buffer[cnt] & 0x80) == 0;
rawir.duration = ((buffer[cnt] & 0x7f) +
(rawir.pulse ? 0 : -1)) *
rc_dev->rx_resolution;
ir_raw_event_store_with_filter(rc_dev, &rawir);
}
}
}
static void smi_ir_decode(struct smi_rc *ir)
{
struct smi_dev *dev = ir->dev;
struct rc_dev *rc_dev = ir->rc_dev;
u32 dwIRControl, dwIRData;
u8 index, ucIRCount, readLoop;
dwIRControl = smi_read(IR_Init_Reg);
if (dwIRControl & rbIRVld) {
ucIRCount = (u8) smi_read(IR_Data_Cnt);
readLoop = ucIRCount/4;
if (ucIRCount % 4)
readLoop += 1;
for (index = 0; index < readLoop; index++) {
dwIRData = smi_read(IR_DATA_BUFFER_BASE + (index * 4));
ir->irData[index*4 + 0] = (u8)(dwIRData);
ir->irData[index*4 + 1] = (u8)(dwIRData >> 8);
ir->irData[index*4 + 2] = (u8)(dwIRData >> 16);
ir->irData[index*4 + 3] = (u8)(dwIRData >> 24);
}
smi_raw_process(rc_dev, ir->irData, ucIRCount);
smi_set(IR_Init_Reg, rbIRVld);
}
if (dwIRControl & rbIRhighidle) {
struct ir_raw_event rawir = {};
rawir.pulse = 0;
rawir.duration = US_TO_NS(SMI_SAMPLE_PERIOD *
SMI_SAMPLE_IDLEMIN);
ir_raw_event_store_with_filter(rc_dev, &rawir);
smi_set(IR_Init_Reg, rbIRhighidle);
}
ir_raw_event_handle(rc_dev);
}
/* ir functions call by main driver.*/
int smi_ir_irq(struct smi_rc *ir, u32 int_status)
{
int handled = 0;
if (int_status & IR_X_INT) {
smi_ir_disableInterrupt(ir);
smi_ir_clearInterrupt(ir);
smi_ir_decode(ir);
smi_ir_enableInterrupt(ir);
handled = 1;
}
return handled;
}
void smi_ir_start(struct smi_rc *ir)
{
struct smi_dev *dev = ir->dev;
smi_write(IR_Idle_Cnt_Low,
(((SMI_SAMPLE_PERIOD - 1) & 0xFFFF) << 16) |
(SMI_SAMPLE_IDLEMIN & 0xFFFF));
msleep(20);
smi_set(IR_Init_Reg, rbIRen | rbIRhighidle);
smi_ir_enableInterrupt(ir);
}
int smi_ir_init(struct smi_dev *dev)
{
int ret;
struct rc_dev *rc_dev;
struct smi_rc *ir = &dev->ir;
rc_dev = rc_allocate_device(RC_DRIVER_IR_RAW);
if (!rc_dev)
return -ENOMEM;
/* init input device */
snprintf(ir->device_name, sizeof(ir->device_name), "IR (%s)",
dev->info->name);
snprintf(ir->input_phys, sizeof(ir->input_phys), "pci-%s/ir0",
pci_name(dev->pci_dev));
rc_dev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
rc_dev->driver_name = "SMI_PCIe";
rc_dev->input_phys = ir->input_phys;
rc_dev->device_name = ir->device_name;
rc_dev->input_id.bustype = BUS_PCI;
rc_dev->input_id.version = 1;
rc_dev->input_id.vendor = dev->pci_dev->subsystem_vendor;
rc_dev->input_id.product = dev->pci_dev->subsystem_device;
rc_dev->dev.parent = &dev->pci_dev->dev;
rc_dev->map_name = dev->info->rc_map;
rc_dev->timeout = MS_TO_NS(100);
rc_dev->rx_resolution = US_TO_NS(SMI_SAMPLE_PERIOD);
ir->rc_dev = rc_dev;
ir->dev = dev;
smi_ir_disableInterrupt(ir);
ret = rc_register_device(rc_dev);
if (ret)
goto ir_err;
return 0;
ir_err:
rc_free_device(rc_dev);
return ret;
}
void smi_ir_exit(struct smi_dev *dev)
{
struct smi_rc *ir = &dev->ir;
struct rc_dev *rc_dev = ir->rc_dev;
smi_ir_stop(ir);
rc_unregister_device(rc_dev);
ir->rc_dev = NULL;
}