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4345e2e5c7
Since snprintf() returns the would-be-output size instead of the actual output size, the succeeding calls may go beyond the given buffer limit. Fix it by replacing with scnprintf(). Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
1155 lines
31 KiB
C
1155 lines
31 KiB
C
/*
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* Driver for Nuvoton Technology Corporation w83667hg/w83677hg-i CIR
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*
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* Copyright (C) 2010 Jarod Wilson <jarod@redhat.com>
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* Copyright (C) 2009 Nuvoton PS Team
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*
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* Special thanks to Nuvoton for providing hardware, spec sheets and
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* sample code upon which portions of this driver are based. Indirect
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* thanks also to Maxim Levitsky, whose ene_ir driver this driver is
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* modeled after.
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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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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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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 <media/rc-core.h>
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#include <linux/pci_ids.h>
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#include "nuvoton-cir.h"
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static void nvt_clear_cir_wake_fifo(struct nvt_dev *nvt);
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static const struct nvt_chip nvt_chips[] = {
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{ "w83667hg", NVT_W83667HG },
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{ "NCT6775F", NVT_6775F },
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{ "NCT6776F", NVT_6776F },
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{ "NCT6779D", NVT_6779D },
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};
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static inline struct device *nvt_get_dev(const struct nvt_dev *nvt)
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{
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return nvt->rdev->dev.parent;
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}
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static inline bool is_w83667hg(struct nvt_dev *nvt)
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{
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return nvt->chip_ver == NVT_W83667HG;
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}
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/* write val to config reg */
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static inline void nvt_cr_write(struct nvt_dev *nvt, u8 val, u8 reg)
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{
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outb(reg, nvt->cr_efir);
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outb(val, nvt->cr_efdr);
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}
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/* read val from config reg */
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static inline u8 nvt_cr_read(struct nvt_dev *nvt, u8 reg)
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{
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outb(reg, nvt->cr_efir);
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return inb(nvt->cr_efdr);
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}
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/* update config register bit without changing other bits */
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static inline void nvt_set_reg_bit(struct nvt_dev *nvt, u8 val, u8 reg)
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{
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u8 tmp = nvt_cr_read(nvt, reg) | val;
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nvt_cr_write(nvt, tmp, reg);
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}
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/* clear config register bit without changing other bits */
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static inline void nvt_clear_reg_bit(struct nvt_dev *nvt, u8 val, u8 reg)
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{
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u8 tmp = nvt_cr_read(nvt, reg) & ~val;
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nvt_cr_write(nvt, tmp, reg);
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}
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/* enter extended function mode */
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static inline int nvt_efm_enable(struct nvt_dev *nvt)
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{
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if (!request_muxed_region(nvt->cr_efir, 2, NVT_DRIVER_NAME))
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return -EBUSY;
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/* Enabling Extended Function Mode explicitly requires writing 2x */
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outb(EFER_EFM_ENABLE, nvt->cr_efir);
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outb(EFER_EFM_ENABLE, nvt->cr_efir);
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return 0;
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}
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/* exit extended function mode */
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static inline void nvt_efm_disable(struct nvt_dev *nvt)
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{
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outb(EFER_EFM_DISABLE, nvt->cr_efir);
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release_region(nvt->cr_efir, 2);
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}
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/*
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* When you want to address a specific logical device, write its logical
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* device number to CR_LOGICAL_DEV_SEL, then enable/disable by writing
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* 0x1/0x0 respectively to CR_LOGICAL_DEV_EN.
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*/
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static inline void nvt_select_logical_dev(struct nvt_dev *nvt, u8 ldev)
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{
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nvt_cr_write(nvt, ldev, CR_LOGICAL_DEV_SEL);
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}
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/* select and enable logical device with setting EFM mode*/
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static inline void nvt_enable_logical_dev(struct nvt_dev *nvt, u8 ldev)
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{
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nvt_efm_enable(nvt);
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nvt_select_logical_dev(nvt, ldev);
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nvt_cr_write(nvt, LOGICAL_DEV_ENABLE, CR_LOGICAL_DEV_EN);
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nvt_efm_disable(nvt);
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}
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/* select and disable logical device with setting EFM mode*/
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static inline void nvt_disable_logical_dev(struct nvt_dev *nvt, u8 ldev)
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{
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nvt_efm_enable(nvt);
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nvt_select_logical_dev(nvt, ldev);
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nvt_cr_write(nvt, LOGICAL_DEV_DISABLE, CR_LOGICAL_DEV_EN);
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nvt_efm_disable(nvt);
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}
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/* write val to cir config register */
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static inline void nvt_cir_reg_write(struct nvt_dev *nvt, u8 val, u8 offset)
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{
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outb(val, nvt->cir_addr + offset);
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}
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/* read val from cir config register */
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static u8 nvt_cir_reg_read(struct nvt_dev *nvt, u8 offset)
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{
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return inb(nvt->cir_addr + offset);
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}
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/* write val to cir wake register */
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static inline void nvt_cir_wake_reg_write(struct nvt_dev *nvt,
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u8 val, u8 offset)
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{
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outb(val, nvt->cir_wake_addr + offset);
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}
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/* read val from cir wake config register */
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static u8 nvt_cir_wake_reg_read(struct nvt_dev *nvt, u8 offset)
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{
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return inb(nvt->cir_wake_addr + offset);
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}
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/* don't override io address if one is set already */
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static void nvt_set_ioaddr(struct nvt_dev *nvt, unsigned long *ioaddr)
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{
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unsigned long old_addr;
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old_addr = nvt_cr_read(nvt, CR_CIR_BASE_ADDR_HI) << 8;
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old_addr |= nvt_cr_read(nvt, CR_CIR_BASE_ADDR_LO);
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if (old_addr)
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*ioaddr = old_addr;
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else {
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nvt_cr_write(nvt, *ioaddr >> 8, CR_CIR_BASE_ADDR_HI);
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nvt_cr_write(nvt, *ioaddr & 0xff, CR_CIR_BASE_ADDR_LO);
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}
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}
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static void nvt_write_wakeup_codes(struct rc_dev *dev,
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const u8 *wbuf, int count)
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{
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u8 tolerance, config;
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struct nvt_dev *nvt = dev->priv;
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unsigned long flags;
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int i;
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/* hardcode the tolerance to 10% */
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tolerance = DIV_ROUND_UP(count, 10);
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spin_lock_irqsave(&nvt->lock, flags);
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nvt_clear_cir_wake_fifo(nvt);
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nvt_cir_wake_reg_write(nvt, count, CIR_WAKE_FIFO_CMP_DEEP);
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nvt_cir_wake_reg_write(nvt, tolerance, CIR_WAKE_FIFO_CMP_TOL);
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config = nvt_cir_wake_reg_read(nvt, CIR_WAKE_IRCON);
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/* enable writes to wake fifo */
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nvt_cir_wake_reg_write(nvt, config | CIR_WAKE_IRCON_MODE1,
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CIR_WAKE_IRCON);
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if (count)
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pr_info("Wake samples (%d) =", count);
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else
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pr_info("Wake sample fifo cleared");
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for (i = 0; i < count; i++)
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nvt_cir_wake_reg_write(nvt, wbuf[i], CIR_WAKE_WR_FIFO_DATA);
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nvt_cir_wake_reg_write(nvt, config, CIR_WAKE_IRCON);
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spin_unlock_irqrestore(&nvt->lock, flags);
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}
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static ssize_t wakeup_data_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct rc_dev *rc_dev = to_rc_dev(dev);
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struct nvt_dev *nvt = rc_dev->priv;
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int fifo_len, duration;
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unsigned long flags;
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ssize_t buf_len = 0;
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int i;
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spin_lock_irqsave(&nvt->lock, flags);
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fifo_len = nvt_cir_wake_reg_read(nvt, CIR_WAKE_FIFO_COUNT);
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fifo_len = min(fifo_len, WAKEUP_MAX_SIZE);
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/* go to first element to be read */
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while (nvt_cir_wake_reg_read(nvt, CIR_WAKE_RD_FIFO_ONLY_IDX))
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_RD_FIFO_ONLY);
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for (i = 0; i < fifo_len; i++) {
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duration = nvt_cir_wake_reg_read(nvt, CIR_WAKE_RD_FIFO_ONLY);
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duration = (duration & BUF_LEN_MASK) * SAMPLE_PERIOD;
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buf_len += scnprintf(buf + buf_len, PAGE_SIZE - buf_len,
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"%d ", duration);
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}
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buf_len += scnprintf(buf + buf_len, PAGE_SIZE - buf_len, "\n");
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spin_unlock_irqrestore(&nvt->lock, flags);
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return buf_len;
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}
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static ssize_t wakeup_data_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t len)
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{
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struct rc_dev *rc_dev = to_rc_dev(dev);
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u8 wake_buf[WAKEUP_MAX_SIZE];
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char **argv;
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int i, count;
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unsigned int val;
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ssize_t ret;
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argv = argv_split(GFP_KERNEL, buf, &count);
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if (!argv)
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return -ENOMEM;
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if (!count || count > WAKEUP_MAX_SIZE) {
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ret = -EINVAL;
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goto out;
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}
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for (i = 0; i < count; i++) {
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ret = kstrtouint(argv[i], 10, &val);
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if (ret)
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goto out;
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val = DIV_ROUND_CLOSEST(val, SAMPLE_PERIOD);
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if (!val || val > 0x7f) {
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ret = -EINVAL;
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goto out;
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}
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wake_buf[i] = val;
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/* sequence must start with a pulse */
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if (i % 2 == 0)
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wake_buf[i] |= BUF_PULSE_BIT;
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}
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nvt_write_wakeup_codes(rc_dev, wake_buf, count);
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ret = len;
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out:
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argv_free(argv);
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return ret;
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}
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static DEVICE_ATTR_RW(wakeup_data);
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/* dump current cir register contents */
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static void cir_dump_regs(struct nvt_dev *nvt)
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{
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nvt_efm_enable(nvt);
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nvt_select_logical_dev(nvt, LOGICAL_DEV_CIR);
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pr_info("%s: Dump CIR logical device registers:\n", NVT_DRIVER_NAME);
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pr_info(" * CR CIR ACTIVE : 0x%x\n",
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nvt_cr_read(nvt, CR_LOGICAL_DEV_EN));
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pr_info(" * CR CIR BASE ADDR: 0x%x\n",
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(nvt_cr_read(nvt, CR_CIR_BASE_ADDR_HI) << 8) |
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nvt_cr_read(nvt, CR_CIR_BASE_ADDR_LO));
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pr_info(" * CR CIR IRQ NUM: 0x%x\n",
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nvt_cr_read(nvt, CR_CIR_IRQ_RSRC));
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nvt_efm_disable(nvt);
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pr_info("%s: Dump CIR registers:\n", NVT_DRIVER_NAME);
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pr_info(" * IRCON: 0x%x\n", nvt_cir_reg_read(nvt, CIR_IRCON));
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pr_info(" * IRSTS: 0x%x\n", nvt_cir_reg_read(nvt, CIR_IRSTS));
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pr_info(" * IREN: 0x%x\n", nvt_cir_reg_read(nvt, CIR_IREN));
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pr_info(" * RXFCONT: 0x%x\n", nvt_cir_reg_read(nvt, CIR_RXFCONT));
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pr_info(" * CP: 0x%x\n", nvt_cir_reg_read(nvt, CIR_CP));
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pr_info(" * CC: 0x%x\n", nvt_cir_reg_read(nvt, CIR_CC));
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pr_info(" * SLCH: 0x%x\n", nvt_cir_reg_read(nvt, CIR_SLCH));
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pr_info(" * SLCL: 0x%x\n", nvt_cir_reg_read(nvt, CIR_SLCL));
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pr_info(" * FIFOCON: 0x%x\n", nvt_cir_reg_read(nvt, CIR_FIFOCON));
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pr_info(" * IRFIFOSTS: 0x%x\n", nvt_cir_reg_read(nvt, CIR_IRFIFOSTS));
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pr_info(" * SRXFIFO: 0x%x\n", nvt_cir_reg_read(nvt, CIR_SRXFIFO));
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pr_info(" * TXFCONT: 0x%x\n", nvt_cir_reg_read(nvt, CIR_TXFCONT));
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pr_info(" * STXFIFO: 0x%x\n", nvt_cir_reg_read(nvt, CIR_STXFIFO));
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pr_info(" * FCCH: 0x%x\n", nvt_cir_reg_read(nvt, CIR_FCCH));
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pr_info(" * FCCL: 0x%x\n", nvt_cir_reg_read(nvt, CIR_FCCL));
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pr_info(" * IRFSM: 0x%x\n", nvt_cir_reg_read(nvt, CIR_IRFSM));
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}
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/* dump current cir wake register contents */
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static void cir_wake_dump_regs(struct nvt_dev *nvt)
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{
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u8 i, fifo_len;
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nvt_efm_enable(nvt);
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nvt_select_logical_dev(nvt, LOGICAL_DEV_CIR_WAKE);
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pr_info("%s: Dump CIR WAKE logical device registers:\n",
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NVT_DRIVER_NAME);
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pr_info(" * CR CIR WAKE ACTIVE : 0x%x\n",
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nvt_cr_read(nvt, CR_LOGICAL_DEV_EN));
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pr_info(" * CR CIR WAKE BASE ADDR: 0x%x\n",
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(nvt_cr_read(nvt, CR_CIR_BASE_ADDR_HI) << 8) |
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nvt_cr_read(nvt, CR_CIR_BASE_ADDR_LO));
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pr_info(" * CR CIR WAKE IRQ NUM: 0x%x\n",
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nvt_cr_read(nvt, CR_CIR_IRQ_RSRC));
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nvt_efm_disable(nvt);
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pr_info("%s: Dump CIR WAKE registers\n", NVT_DRIVER_NAME);
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pr_info(" * IRCON: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_IRCON));
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pr_info(" * IRSTS: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_IRSTS));
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pr_info(" * IREN: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_IREN));
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pr_info(" * FIFO CMP DEEP: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_FIFO_CMP_DEEP));
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pr_info(" * FIFO CMP TOL: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_FIFO_CMP_TOL));
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pr_info(" * FIFO COUNT: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_FIFO_COUNT));
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pr_info(" * SLCH: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_SLCH));
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pr_info(" * SLCL: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_SLCL));
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pr_info(" * FIFOCON: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_FIFOCON));
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pr_info(" * SRXFSTS: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_SRXFSTS));
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pr_info(" * SAMPLE RX FIFO: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_SAMPLE_RX_FIFO));
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pr_info(" * WR FIFO DATA: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_WR_FIFO_DATA));
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pr_info(" * RD FIFO ONLY: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_RD_FIFO_ONLY));
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pr_info(" * RD FIFO ONLY IDX: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_RD_FIFO_ONLY_IDX));
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pr_info(" * FIFO IGNORE: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_FIFO_IGNORE));
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pr_info(" * IRFSM: 0x%x\n",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_IRFSM));
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fifo_len = nvt_cir_wake_reg_read(nvt, CIR_WAKE_FIFO_COUNT);
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pr_info("%s: Dump CIR WAKE FIFO (len %d)\n", NVT_DRIVER_NAME, fifo_len);
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pr_info("* Contents =");
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for (i = 0; i < fifo_len; i++)
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pr_cont(" %02x",
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nvt_cir_wake_reg_read(nvt, CIR_WAKE_RD_FIFO_ONLY));
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pr_cont("\n");
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}
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|
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static inline const char *nvt_find_chip(struct nvt_dev *nvt, int id)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(nvt_chips); i++)
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if ((id & SIO_ID_MASK) == nvt_chips[i].chip_ver) {
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nvt->chip_ver = nvt_chips[i].chip_ver;
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return nvt_chips[i].name;
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}
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|
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return NULL;
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}
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|
|
|
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/* detect hardware features */
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static int nvt_hw_detect(struct nvt_dev *nvt)
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{
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struct device *dev = nvt_get_dev(nvt);
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const char *chip_name;
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int chip_id;
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|
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nvt_efm_enable(nvt);
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|
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/* Check if we're wired for the alternate EFER setup */
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nvt->chip_major = nvt_cr_read(nvt, CR_CHIP_ID_HI);
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if (nvt->chip_major == 0xff) {
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nvt_efm_disable(nvt);
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nvt->cr_efir = CR_EFIR2;
|
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nvt->cr_efdr = CR_EFDR2;
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nvt_efm_enable(nvt);
|
|
nvt->chip_major = nvt_cr_read(nvt, CR_CHIP_ID_HI);
|
|
}
|
|
nvt->chip_minor = nvt_cr_read(nvt, CR_CHIP_ID_LO);
|
|
|
|
nvt_efm_disable(nvt);
|
|
|
|
chip_id = nvt->chip_major << 8 | nvt->chip_minor;
|
|
if (chip_id == NVT_INVALID) {
|
|
dev_err(dev, "No device found on either EFM port\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
chip_name = nvt_find_chip(nvt, chip_id);
|
|
|
|
/* warn, but still let the driver load, if we don't know this chip */
|
|
if (!chip_name)
|
|
dev_warn(dev,
|
|
"unknown chip, id: 0x%02x 0x%02x, it may not work...",
|
|
nvt->chip_major, nvt->chip_minor);
|
|
else
|
|
dev_info(dev, "found %s or compatible: chip id: 0x%02x 0x%02x",
|
|
chip_name, nvt->chip_major, nvt->chip_minor);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void nvt_cir_ldev_init(struct nvt_dev *nvt)
|
|
{
|
|
u8 val, psreg, psmask, psval;
|
|
|
|
if (is_w83667hg(nvt)) {
|
|
psreg = CR_MULTIFUNC_PIN_SEL;
|
|
psmask = MULTIFUNC_PIN_SEL_MASK;
|
|
psval = MULTIFUNC_ENABLE_CIR | MULTIFUNC_ENABLE_CIRWB;
|
|
} else {
|
|
psreg = CR_OUTPUT_PIN_SEL;
|
|
psmask = OUTPUT_PIN_SEL_MASK;
|
|
psval = OUTPUT_ENABLE_CIR | OUTPUT_ENABLE_CIRWB;
|
|
}
|
|
|
|
/* output pin selection: enable CIR, with WB sensor enabled */
|
|
val = nvt_cr_read(nvt, psreg);
|
|
val &= psmask;
|
|
val |= psval;
|
|
nvt_cr_write(nvt, val, psreg);
|
|
|
|
/* Select CIR logical device */
|
|
nvt_select_logical_dev(nvt, LOGICAL_DEV_CIR);
|
|
|
|
nvt_set_ioaddr(nvt, &nvt->cir_addr);
|
|
|
|
nvt_cr_write(nvt, nvt->cir_irq, CR_CIR_IRQ_RSRC);
|
|
|
|
nvt_dbg("CIR initialized, base io port address: 0x%lx, irq: %d",
|
|
nvt->cir_addr, nvt->cir_irq);
|
|
}
|
|
|
|
static void nvt_cir_wake_ldev_init(struct nvt_dev *nvt)
|
|
{
|
|
/* Select ACPI logical device and anable it */
|
|
nvt_select_logical_dev(nvt, LOGICAL_DEV_ACPI);
|
|
nvt_cr_write(nvt, LOGICAL_DEV_ENABLE, CR_LOGICAL_DEV_EN);
|
|
|
|
/* Enable CIR Wake via PSOUT# (Pin60) */
|
|
nvt_set_reg_bit(nvt, CIR_WAKE_ENABLE_BIT, CR_ACPI_CIR_WAKE);
|
|
|
|
/* enable pme interrupt of cir wakeup event */
|
|
nvt_set_reg_bit(nvt, PME_INTR_CIR_PASS_BIT, CR_ACPI_IRQ_EVENTS2);
|
|
|
|
/* Select CIR Wake logical device */
|
|
nvt_select_logical_dev(nvt, LOGICAL_DEV_CIR_WAKE);
|
|
|
|
nvt_set_ioaddr(nvt, &nvt->cir_wake_addr);
|
|
|
|
nvt_dbg("CIR Wake initialized, base io port address: 0x%lx",
|
|
nvt->cir_wake_addr);
|
|
}
|
|
|
|
/* clear out the hardware's cir rx fifo */
|
|
static void nvt_clear_cir_fifo(struct nvt_dev *nvt)
|
|
{
|
|
u8 val = nvt_cir_reg_read(nvt, CIR_FIFOCON);
|
|
nvt_cir_reg_write(nvt, val | CIR_FIFOCON_RXFIFOCLR, CIR_FIFOCON);
|
|
}
|
|
|
|
/* clear out the hardware's cir wake rx fifo */
|
|
static void nvt_clear_cir_wake_fifo(struct nvt_dev *nvt)
|
|
{
|
|
u8 val, config;
|
|
|
|
config = nvt_cir_wake_reg_read(nvt, CIR_WAKE_IRCON);
|
|
|
|
/* clearing wake fifo works in learning mode only */
|
|
nvt_cir_wake_reg_write(nvt, config & ~CIR_WAKE_IRCON_MODE0,
|
|
CIR_WAKE_IRCON);
|
|
|
|
val = nvt_cir_wake_reg_read(nvt, CIR_WAKE_FIFOCON);
|
|
nvt_cir_wake_reg_write(nvt, val | CIR_WAKE_FIFOCON_RXFIFOCLR,
|
|
CIR_WAKE_FIFOCON);
|
|
|
|
nvt_cir_wake_reg_write(nvt, config, CIR_WAKE_IRCON);
|
|
}
|
|
|
|
/* clear out the hardware's cir tx fifo */
|
|
static void nvt_clear_tx_fifo(struct nvt_dev *nvt)
|
|
{
|
|
u8 val;
|
|
|
|
val = nvt_cir_reg_read(nvt, CIR_FIFOCON);
|
|
nvt_cir_reg_write(nvt, val | CIR_FIFOCON_TXFIFOCLR, CIR_FIFOCON);
|
|
}
|
|
|
|
/* enable RX Trigger Level Reach and Packet End interrupts */
|
|
static void nvt_set_cir_iren(struct nvt_dev *nvt)
|
|
{
|
|
u8 iren;
|
|
|
|
iren = CIR_IREN_RTR | CIR_IREN_PE | CIR_IREN_RFO;
|
|
nvt_cir_reg_write(nvt, iren, CIR_IREN);
|
|
}
|
|
|
|
static void nvt_cir_regs_init(struct nvt_dev *nvt)
|
|
{
|
|
nvt_enable_logical_dev(nvt, LOGICAL_DEV_CIR);
|
|
|
|
/* set sample limit count (PE interrupt raised when reached) */
|
|
nvt_cir_reg_write(nvt, CIR_RX_LIMIT_COUNT >> 8, CIR_SLCH);
|
|
nvt_cir_reg_write(nvt, CIR_RX_LIMIT_COUNT & 0xff, CIR_SLCL);
|
|
|
|
/* set fifo irq trigger levels */
|
|
nvt_cir_reg_write(nvt, CIR_FIFOCON_TX_TRIGGER_LEV |
|
|
CIR_FIFOCON_RX_TRIGGER_LEV, CIR_FIFOCON);
|
|
|
|
/* clear hardware rx and tx fifos */
|
|
nvt_clear_cir_fifo(nvt);
|
|
nvt_clear_tx_fifo(nvt);
|
|
|
|
nvt_disable_logical_dev(nvt, LOGICAL_DEV_CIR);
|
|
}
|
|
|
|
static void nvt_cir_wake_regs_init(struct nvt_dev *nvt)
|
|
{
|
|
nvt_enable_logical_dev(nvt, LOGICAL_DEV_CIR_WAKE);
|
|
|
|
/*
|
|
* Disable RX, set specific carrier on = low, off = high,
|
|
* and sample period (currently 50us)
|
|
*/
|
|
nvt_cir_wake_reg_write(nvt, CIR_WAKE_IRCON_MODE0 |
|
|
CIR_WAKE_IRCON_R | CIR_WAKE_IRCON_RXINV |
|
|
CIR_WAKE_IRCON_SAMPLE_PERIOD_SEL,
|
|
CIR_WAKE_IRCON);
|
|
|
|
/* clear any and all stray interrupts */
|
|
nvt_cir_wake_reg_write(nvt, 0xff, CIR_WAKE_IRSTS);
|
|
}
|
|
|
|
static void nvt_enable_wake(struct nvt_dev *nvt)
|
|
{
|
|
unsigned long flags;
|
|
|
|
nvt_efm_enable(nvt);
|
|
|
|
nvt_select_logical_dev(nvt, LOGICAL_DEV_ACPI);
|
|
nvt_set_reg_bit(nvt, CIR_WAKE_ENABLE_BIT, CR_ACPI_CIR_WAKE);
|
|
nvt_set_reg_bit(nvt, PME_INTR_CIR_PASS_BIT, CR_ACPI_IRQ_EVENTS2);
|
|
|
|
nvt_select_logical_dev(nvt, LOGICAL_DEV_CIR_WAKE);
|
|
nvt_cr_write(nvt, LOGICAL_DEV_ENABLE, CR_LOGICAL_DEV_EN);
|
|
|
|
nvt_efm_disable(nvt);
|
|
|
|
spin_lock_irqsave(&nvt->lock, flags);
|
|
|
|
nvt_cir_wake_reg_write(nvt, CIR_WAKE_IRCON_MODE0 | CIR_WAKE_IRCON_RXEN |
|
|
CIR_WAKE_IRCON_R | CIR_WAKE_IRCON_RXINV |
|
|
CIR_WAKE_IRCON_SAMPLE_PERIOD_SEL,
|
|
CIR_WAKE_IRCON);
|
|
nvt_cir_wake_reg_write(nvt, 0xff, CIR_WAKE_IRSTS);
|
|
nvt_cir_wake_reg_write(nvt, 0, CIR_WAKE_IREN);
|
|
|
|
spin_unlock_irqrestore(&nvt->lock, flags);
|
|
}
|
|
|
|
#if 0 /* Currently unused */
|
|
/* rx carrier detect only works in learning mode, must be called w/lock */
|
|
static u32 nvt_rx_carrier_detect(struct nvt_dev *nvt)
|
|
{
|
|
u32 count, carrier, duration = 0;
|
|
int i;
|
|
|
|
count = nvt_cir_reg_read(nvt, CIR_FCCL) |
|
|
nvt_cir_reg_read(nvt, CIR_FCCH) << 8;
|
|
|
|
for (i = 0; i < nvt->pkts; i++) {
|
|
if (nvt->buf[i] & BUF_PULSE_BIT)
|
|
duration += nvt->buf[i] & BUF_LEN_MASK;
|
|
}
|
|
|
|
duration *= SAMPLE_PERIOD;
|
|
|
|
if (!count || !duration) {
|
|
dev_notice(nvt_get_dev(nvt),
|
|
"Unable to determine carrier! (c:%u, d:%u)",
|
|
count, duration);
|
|
return 0;
|
|
}
|
|
|
|
carrier = MS_TO_NS(count) / duration;
|
|
|
|
if ((carrier > MAX_CARRIER) || (carrier < MIN_CARRIER))
|
|
nvt_dbg("WTF? Carrier frequency out of range!");
|
|
|
|
nvt_dbg("Carrier frequency: %u (count %u, duration %u)",
|
|
carrier, count, duration);
|
|
|
|
return carrier;
|
|
}
|
|
#endif
|
|
/*
|
|
* set carrier frequency
|
|
*
|
|
* set carrier on 2 registers: CP & CC
|
|
* always set CP as 0x81
|
|
* set CC by SPEC, CC = 3MHz/carrier - 1
|
|
*/
|
|
static int nvt_set_tx_carrier(struct rc_dev *dev, u32 carrier)
|
|
{
|
|
struct nvt_dev *nvt = dev->priv;
|
|
u16 val;
|
|
|
|
if (carrier == 0)
|
|
return -EINVAL;
|
|
|
|
nvt_cir_reg_write(nvt, 1, CIR_CP);
|
|
val = 3000000 / (carrier) - 1;
|
|
nvt_cir_reg_write(nvt, val & 0xff, CIR_CC);
|
|
|
|
nvt_dbg("cp: 0x%x cc: 0x%x\n",
|
|
nvt_cir_reg_read(nvt, CIR_CP), nvt_cir_reg_read(nvt, CIR_CC));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nvt_ir_raw_set_wakeup_filter(struct rc_dev *dev,
|
|
struct rc_scancode_filter *sc_filter)
|
|
{
|
|
u8 buf_val;
|
|
int i, ret, count;
|
|
unsigned int val;
|
|
struct ir_raw_event *raw;
|
|
u8 wake_buf[WAKEUP_MAX_SIZE];
|
|
bool complete;
|
|
|
|
/* Require mask to be set */
|
|
if (!sc_filter->mask)
|
|
return 0;
|
|
|
|
raw = kmalloc_array(WAKEUP_MAX_SIZE, sizeof(*raw), GFP_KERNEL);
|
|
if (!raw)
|
|
return -ENOMEM;
|
|
|
|
ret = ir_raw_encode_scancode(dev->wakeup_protocol, sc_filter->data,
|
|
raw, WAKEUP_MAX_SIZE);
|
|
complete = (ret != -ENOBUFS);
|
|
if (!complete)
|
|
ret = WAKEUP_MAX_SIZE;
|
|
else if (ret < 0)
|
|
goto out_raw;
|
|
|
|
/* Inspect the ir samples */
|
|
for (i = 0, count = 0; i < ret && count < WAKEUP_MAX_SIZE; ++i) {
|
|
/* NS to US */
|
|
val = DIV_ROUND_UP(raw[i].duration, 1000L) / SAMPLE_PERIOD;
|
|
|
|
/* Split too large values into several smaller ones */
|
|
while (val > 0 && count < WAKEUP_MAX_SIZE) {
|
|
/* Skip last value for better comparison tolerance */
|
|
if (complete && i == ret - 1 && val < BUF_LEN_MASK)
|
|
break;
|
|
|
|
/* Clamp values to BUF_LEN_MASK at most */
|
|
buf_val = (val > BUF_LEN_MASK) ? BUF_LEN_MASK : val;
|
|
|
|
wake_buf[count] = buf_val;
|
|
val -= buf_val;
|
|
if ((raw[i]).pulse)
|
|
wake_buf[count] |= BUF_PULSE_BIT;
|
|
count++;
|
|
}
|
|
}
|
|
|
|
nvt_write_wakeup_codes(dev, wake_buf, count);
|
|
ret = 0;
|
|
out_raw:
|
|
kfree(raw);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* dump contents of the last rx buffer we got from the hw rx fifo */
|
|
static void nvt_dump_rx_buf(struct nvt_dev *nvt)
|
|
{
|
|
int i;
|
|
|
|
printk(KERN_DEBUG "%s (len %d): ", __func__, nvt->pkts);
|
|
for (i = 0; (i < nvt->pkts) && (i < RX_BUF_LEN); i++)
|
|
printk(KERN_CONT "0x%02x ", nvt->buf[i]);
|
|
printk(KERN_CONT "\n");
|
|
}
|
|
|
|
/*
|
|
* Process raw data in rx driver buffer, store it in raw IR event kfifo,
|
|
* trigger decode when appropriate.
|
|
*
|
|
* We get IR data samples one byte at a time. If the msb is set, its a pulse,
|
|
* otherwise its a space. The lower 7 bits are the count of SAMPLE_PERIOD
|
|
* (default 50us) intervals for that pulse/space. A discrete signal is
|
|
* followed by a series of 0x7f packets, then either 0x7<something> or 0x80
|
|
* to signal more IR coming (repeats) or end of IR, respectively. We store
|
|
* sample data in the raw event kfifo until we see 0x7<something> (except f)
|
|
* or 0x80, at which time, we trigger a decode operation.
|
|
*/
|
|
static void nvt_process_rx_ir_data(struct nvt_dev *nvt)
|
|
{
|
|
struct ir_raw_event rawir = {};
|
|
u8 sample;
|
|
int i;
|
|
|
|
nvt_dbg_verbose("%s firing", __func__);
|
|
|
|
if (debug)
|
|
nvt_dump_rx_buf(nvt);
|
|
|
|
nvt_dbg_verbose("Processing buffer of len %d", nvt->pkts);
|
|
|
|
for (i = 0; i < nvt->pkts; i++) {
|
|
sample = nvt->buf[i];
|
|
|
|
rawir.pulse = ((sample & BUF_PULSE_BIT) != 0);
|
|
rawir.duration = US_TO_NS((sample & BUF_LEN_MASK)
|
|
* SAMPLE_PERIOD);
|
|
|
|
nvt_dbg("Storing %s with duration %d",
|
|
rawir.pulse ? "pulse" : "space", rawir.duration);
|
|
|
|
ir_raw_event_store_with_filter(nvt->rdev, &rawir);
|
|
}
|
|
|
|
nvt->pkts = 0;
|
|
|
|
nvt_dbg("Calling ir_raw_event_handle\n");
|
|
ir_raw_event_handle(nvt->rdev);
|
|
|
|
nvt_dbg_verbose("%s done", __func__);
|
|
}
|
|
|
|
static void nvt_handle_rx_fifo_overrun(struct nvt_dev *nvt)
|
|
{
|
|
dev_warn(nvt_get_dev(nvt), "RX FIFO overrun detected, flushing data!");
|
|
|
|
nvt->pkts = 0;
|
|
nvt_clear_cir_fifo(nvt);
|
|
ir_raw_event_reset(nvt->rdev);
|
|
}
|
|
|
|
/* copy data from hardware rx fifo into driver buffer */
|
|
static void nvt_get_rx_ir_data(struct nvt_dev *nvt)
|
|
{
|
|
u8 fifocount;
|
|
int i;
|
|
|
|
/* Get count of how many bytes to read from RX FIFO */
|
|
fifocount = nvt_cir_reg_read(nvt, CIR_RXFCONT);
|
|
|
|
nvt_dbg("attempting to fetch %u bytes from hw rx fifo", fifocount);
|
|
|
|
/* Read fifocount bytes from CIR Sample RX FIFO register */
|
|
for (i = 0; i < fifocount; i++)
|
|
nvt->buf[i] = nvt_cir_reg_read(nvt, CIR_SRXFIFO);
|
|
|
|
nvt->pkts = fifocount;
|
|
nvt_dbg("%s: pkts now %d", __func__, nvt->pkts);
|
|
|
|
nvt_process_rx_ir_data(nvt);
|
|
}
|
|
|
|
static void nvt_cir_log_irqs(u8 status, u8 iren)
|
|
{
|
|
nvt_dbg("IRQ 0x%02x (IREN 0x%02x) :%s%s%s%s%s%s%s%s%s",
|
|
status, iren,
|
|
status & CIR_IRSTS_RDR ? " RDR" : "",
|
|
status & CIR_IRSTS_RTR ? " RTR" : "",
|
|
status & CIR_IRSTS_PE ? " PE" : "",
|
|
status & CIR_IRSTS_RFO ? " RFO" : "",
|
|
status & CIR_IRSTS_TE ? " TE" : "",
|
|
status & CIR_IRSTS_TTR ? " TTR" : "",
|
|
status & CIR_IRSTS_TFU ? " TFU" : "",
|
|
status & CIR_IRSTS_GH ? " GH" : "",
|
|
status & ~(CIR_IRSTS_RDR | CIR_IRSTS_RTR | CIR_IRSTS_PE |
|
|
CIR_IRSTS_RFO | CIR_IRSTS_TE | CIR_IRSTS_TTR |
|
|
CIR_IRSTS_TFU | CIR_IRSTS_GH) ? " ?" : "");
|
|
}
|
|
|
|
/* interrupt service routine for incoming and outgoing CIR data */
|
|
static irqreturn_t nvt_cir_isr(int irq, void *data)
|
|
{
|
|
struct nvt_dev *nvt = data;
|
|
u8 status, iren;
|
|
|
|
nvt_dbg_verbose("%s firing", __func__);
|
|
|
|
spin_lock(&nvt->lock);
|
|
|
|
/*
|
|
* Get IR Status register contents. Write 1 to ack/clear
|
|
*
|
|
* bit: reg name - description
|
|
* 7: CIR_IRSTS_RDR - RX Data Ready
|
|
* 6: CIR_IRSTS_RTR - RX FIFO Trigger Level Reach
|
|
* 5: CIR_IRSTS_PE - Packet End
|
|
* 4: CIR_IRSTS_RFO - RX FIFO Overrun (RDR will also be set)
|
|
* 3: CIR_IRSTS_TE - TX FIFO Empty
|
|
* 2: CIR_IRSTS_TTR - TX FIFO Trigger Level Reach
|
|
* 1: CIR_IRSTS_TFU - TX FIFO Underrun
|
|
* 0: CIR_IRSTS_GH - Min Length Detected
|
|
*/
|
|
status = nvt_cir_reg_read(nvt, CIR_IRSTS);
|
|
iren = nvt_cir_reg_read(nvt, CIR_IREN);
|
|
|
|
/* At least NCT6779D creates a spurious interrupt when the
|
|
* logical device is being disabled.
|
|
*/
|
|
if (status == 0xff && iren == 0xff) {
|
|
spin_unlock(&nvt->lock);
|
|
nvt_dbg_verbose("Spurious interrupt detected");
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/* IRQ may be shared with CIR WAKE, therefore check for each
|
|
* status bit whether the related interrupt source is enabled
|
|
*/
|
|
if (!(status & iren)) {
|
|
spin_unlock(&nvt->lock);
|
|
nvt_dbg_verbose("%s exiting, IRSTS 0x0", __func__);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/* ack/clear all irq flags we've got */
|
|
nvt_cir_reg_write(nvt, status, CIR_IRSTS);
|
|
nvt_cir_reg_write(nvt, 0, CIR_IRSTS);
|
|
|
|
nvt_cir_log_irqs(status, iren);
|
|
|
|
if (status & CIR_IRSTS_RFO)
|
|
nvt_handle_rx_fifo_overrun(nvt);
|
|
else if (status & (CIR_IRSTS_RTR | CIR_IRSTS_PE))
|
|
nvt_get_rx_ir_data(nvt);
|
|
|
|
spin_unlock(&nvt->lock);
|
|
|
|
nvt_dbg_verbose("%s done", __func__);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void nvt_enable_cir(struct nvt_dev *nvt)
|
|
{
|
|
unsigned long flags;
|
|
|
|
/* enable the CIR logical device */
|
|
nvt_enable_logical_dev(nvt, LOGICAL_DEV_CIR);
|
|
|
|
spin_lock_irqsave(&nvt->lock, flags);
|
|
|
|
/*
|
|
* Enable TX and RX, specify carrier on = low, off = high, and set
|
|
* sample period (currently 50us)
|
|
*/
|
|
nvt_cir_reg_write(nvt, CIR_IRCON_TXEN | CIR_IRCON_RXEN |
|
|
CIR_IRCON_RXINV | CIR_IRCON_SAMPLE_PERIOD_SEL,
|
|
CIR_IRCON);
|
|
|
|
/* clear all pending interrupts */
|
|
nvt_cir_reg_write(nvt, 0xff, CIR_IRSTS);
|
|
|
|
/* enable interrupts */
|
|
nvt_set_cir_iren(nvt);
|
|
|
|
spin_unlock_irqrestore(&nvt->lock, flags);
|
|
}
|
|
|
|
static void nvt_disable_cir(struct nvt_dev *nvt)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&nvt->lock, flags);
|
|
|
|
/* disable CIR interrupts */
|
|
nvt_cir_reg_write(nvt, 0, CIR_IREN);
|
|
|
|
/* clear any and all pending interrupts */
|
|
nvt_cir_reg_write(nvt, 0xff, CIR_IRSTS);
|
|
|
|
/* clear all function enable flags */
|
|
nvt_cir_reg_write(nvt, 0, CIR_IRCON);
|
|
|
|
/* clear hardware rx and tx fifos */
|
|
nvt_clear_cir_fifo(nvt);
|
|
nvt_clear_tx_fifo(nvt);
|
|
|
|
spin_unlock_irqrestore(&nvt->lock, flags);
|
|
|
|
/* disable the CIR logical device */
|
|
nvt_disable_logical_dev(nvt, LOGICAL_DEV_CIR);
|
|
}
|
|
|
|
static int nvt_open(struct rc_dev *dev)
|
|
{
|
|
struct nvt_dev *nvt = dev->priv;
|
|
|
|
nvt_enable_cir(nvt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void nvt_close(struct rc_dev *dev)
|
|
{
|
|
struct nvt_dev *nvt = dev->priv;
|
|
|
|
nvt_disable_cir(nvt);
|
|
}
|
|
|
|
/* Allocate memory, probe hardware, and initialize everything */
|
|
static int nvt_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
|
|
{
|
|
struct nvt_dev *nvt;
|
|
struct rc_dev *rdev;
|
|
int ret;
|
|
|
|
nvt = devm_kzalloc(&pdev->dev, sizeof(struct nvt_dev), GFP_KERNEL);
|
|
if (!nvt)
|
|
return -ENOMEM;
|
|
|
|
/* input device for IR remote */
|
|
nvt->rdev = devm_rc_allocate_device(&pdev->dev, RC_DRIVER_IR_RAW);
|
|
if (!nvt->rdev)
|
|
return -ENOMEM;
|
|
rdev = nvt->rdev;
|
|
|
|
/* activate pnp device */
|
|
ret = pnp_activate_dev(pdev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "Could not activate PNP device!\n");
|
|
return ret;
|
|
}
|
|
|
|
/* validate pnp resources */
|
|
if (!pnp_port_valid(pdev, 0) ||
|
|
pnp_port_len(pdev, 0) < CIR_IOREG_LENGTH) {
|
|
dev_err(&pdev->dev, "IR PNP Port not valid!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!pnp_irq_valid(pdev, 0)) {
|
|
dev_err(&pdev->dev, "PNP IRQ not valid!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!pnp_port_valid(pdev, 1) ||
|
|
pnp_port_len(pdev, 1) < CIR_IOREG_LENGTH) {
|
|
dev_err(&pdev->dev, "Wake PNP Port not valid!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
nvt->cir_addr = pnp_port_start(pdev, 0);
|
|
nvt->cir_irq = pnp_irq(pdev, 0);
|
|
|
|
nvt->cir_wake_addr = pnp_port_start(pdev, 1);
|
|
|
|
nvt->cr_efir = CR_EFIR;
|
|
nvt->cr_efdr = CR_EFDR;
|
|
|
|
spin_lock_init(&nvt->lock);
|
|
|
|
pnp_set_drvdata(pdev, nvt);
|
|
|
|
ret = nvt_hw_detect(nvt);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Initialize CIR & CIR Wake Logical Devices */
|
|
nvt_efm_enable(nvt);
|
|
nvt_cir_ldev_init(nvt);
|
|
nvt_cir_wake_ldev_init(nvt);
|
|
nvt_efm_disable(nvt);
|
|
|
|
/*
|
|
* Initialize CIR & CIR Wake Config Registers
|
|
* and enable logical devices
|
|
*/
|
|
nvt_cir_regs_init(nvt);
|
|
nvt_cir_wake_regs_init(nvt);
|
|
|
|
/* Set up the rc device */
|
|
rdev->priv = nvt;
|
|
rdev->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
|
|
rdev->allowed_wakeup_protocols = RC_PROTO_BIT_ALL_IR_ENCODER;
|
|
rdev->encode_wakeup = true;
|
|
rdev->open = nvt_open;
|
|
rdev->close = nvt_close;
|
|
rdev->s_tx_carrier = nvt_set_tx_carrier;
|
|
rdev->s_wakeup_filter = nvt_ir_raw_set_wakeup_filter;
|
|
rdev->device_name = "Nuvoton w836x7hg Infrared Remote Transceiver";
|
|
rdev->input_phys = "nuvoton/cir0";
|
|
rdev->input_id.bustype = BUS_HOST;
|
|
rdev->input_id.vendor = PCI_VENDOR_ID_WINBOND2;
|
|
rdev->input_id.product = nvt->chip_major;
|
|
rdev->input_id.version = nvt->chip_minor;
|
|
rdev->driver_name = NVT_DRIVER_NAME;
|
|
rdev->map_name = RC_MAP_RC6_MCE;
|
|
rdev->timeout = MS_TO_NS(100);
|
|
/* rx resolution is hardwired to 50us atm, 1, 25, 100 also possible */
|
|
rdev->rx_resolution = US_TO_NS(CIR_SAMPLE_PERIOD);
|
|
#if 0
|
|
rdev->min_timeout = XYZ;
|
|
rdev->max_timeout = XYZ;
|
|
#endif
|
|
ret = devm_rc_register_device(&pdev->dev, rdev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* now claim resources */
|
|
if (!devm_request_region(&pdev->dev, nvt->cir_addr,
|
|
CIR_IOREG_LENGTH, NVT_DRIVER_NAME))
|
|
return -EBUSY;
|
|
|
|
ret = devm_request_irq(&pdev->dev, nvt->cir_irq, nvt_cir_isr,
|
|
IRQF_SHARED, NVT_DRIVER_NAME, nvt);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!devm_request_region(&pdev->dev, nvt->cir_wake_addr,
|
|
CIR_IOREG_LENGTH, NVT_DRIVER_NAME "-wake"))
|
|
return -EBUSY;
|
|
|
|
ret = device_create_file(&rdev->dev, &dev_attr_wakeup_data);
|
|
if (ret)
|
|
return ret;
|
|
|
|
device_init_wakeup(&pdev->dev, true);
|
|
|
|
dev_notice(&pdev->dev, "driver has been successfully loaded\n");
|
|
if (debug) {
|
|
cir_dump_regs(nvt);
|
|
cir_wake_dump_regs(nvt);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void nvt_remove(struct pnp_dev *pdev)
|
|
{
|
|
struct nvt_dev *nvt = pnp_get_drvdata(pdev);
|
|
|
|
device_remove_file(&nvt->rdev->dev, &dev_attr_wakeup_data);
|
|
|
|
nvt_disable_cir(nvt);
|
|
|
|
/* enable CIR Wake (for IR power-on) */
|
|
nvt_enable_wake(nvt);
|
|
}
|
|
|
|
static int nvt_suspend(struct pnp_dev *pdev, pm_message_t state)
|
|
{
|
|
struct nvt_dev *nvt = pnp_get_drvdata(pdev);
|
|
|
|
nvt_dbg("%s called", __func__);
|
|
|
|
mutex_lock(&nvt->rdev->lock);
|
|
if (nvt->rdev->users)
|
|
nvt_disable_cir(nvt);
|
|
mutex_unlock(&nvt->rdev->lock);
|
|
|
|
/* make sure wake is enabled */
|
|
nvt_enable_wake(nvt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nvt_resume(struct pnp_dev *pdev)
|
|
{
|
|
struct nvt_dev *nvt = pnp_get_drvdata(pdev);
|
|
|
|
nvt_dbg("%s called", __func__);
|
|
|
|
nvt_cir_regs_init(nvt);
|
|
nvt_cir_wake_regs_init(nvt);
|
|
|
|
mutex_lock(&nvt->rdev->lock);
|
|
if (nvt->rdev->users)
|
|
nvt_enable_cir(nvt);
|
|
mutex_unlock(&nvt->rdev->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void nvt_shutdown(struct pnp_dev *pdev)
|
|
{
|
|
struct nvt_dev *nvt = pnp_get_drvdata(pdev);
|
|
|
|
nvt_enable_wake(nvt);
|
|
}
|
|
|
|
static const struct pnp_device_id nvt_ids[] = {
|
|
{ "WEC0530", 0 }, /* CIR */
|
|
{ "NTN0530", 0 }, /* CIR for new chip's pnp id*/
|
|
{ "", 0 },
|
|
};
|
|
|
|
static struct pnp_driver nvt_driver = {
|
|
.name = NVT_DRIVER_NAME,
|
|
.id_table = nvt_ids,
|
|
.flags = PNP_DRIVER_RES_DO_NOT_CHANGE,
|
|
.probe = nvt_probe,
|
|
.remove = nvt_remove,
|
|
.suspend = nvt_suspend,
|
|
.resume = nvt_resume,
|
|
.shutdown = nvt_shutdown,
|
|
};
|
|
|
|
module_param(debug, int, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(debug, "Enable debugging output");
|
|
|
|
MODULE_DEVICE_TABLE(pnp, nvt_ids);
|
|
MODULE_DESCRIPTION("Nuvoton W83667HG-A & W83677HG-I CIR driver");
|
|
|
|
MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_pnp_driver(nvt_driver);
|