+++ /dev/null
-/*
- * SuperH IrDA Driver
- *
- * Copyright (C) 2010 Renesas Solutions Corp.
- * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
- *
- * Based on sh_sir.c
- * Copyright (C) 2009 Renesas Solutions Corp.
- * Copyright 2006-2009 Analog Devices Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/*
- * CAUTION
- *
- * This driver is very simple.
- * So, it doesn't have below support now
- * - MIR/FIR support
- * - DMA transfer support
- * - FIFO mode support
- */
-#include <linux/io.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/clk.h>
-#include <net/irda/wrapper.h>
-#include <net/irda/irda_device.h>
-
-#define DRIVER_NAME "sh_irda"
-
-#define __IRDARAM_LEN 0x1039
-
-#define IRTMR 0x1F00 /* Transfer mode */
-#define IRCFR 0x1F02 /* Configuration */
-#define IRCTR 0x1F04 /* IR control */
-#define IRTFLR 0x1F20 /* Transmit frame length */
-#define IRTCTR 0x1F22 /* Transmit control */
-#define IRRFLR 0x1F40 /* Receive frame length */
-#define IRRCTR 0x1F42 /* Receive control */
-#define SIRISR 0x1F60 /* SIR-UART mode interrupt source */
-#define SIRIMR 0x1F62 /* SIR-UART mode interrupt mask */
-#define SIRICR 0x1F64 /* SIR-UART mode interrupt clear */
-#define SIRBCR 0x1F68 /* SIR-UART mode baud rate count */
-#define MFIRISR 0x1F70 /* MIR/FIR mode interrupt source */
-#define MFIRIMR 0x1F72 /* MIR/FIR mode interrupt mask */
-#define MFIRICR 0x1F74 /* MIR/FIR mode interrupt clear */
-#define CRCCTR 0x1F80 /* CRC engine control */
-#define CRCIR 0x1F86 /* CRC engine input data */
-#define CRCCR 0x1F8A /* CRC engine calculation */
-#define CRCOR 0x1F8E /* CRC engine output data */
-#define FIFOCP 0x1FC0 /* FIFO current pointer */
-#define FIFOFP 0x1FC2 /* FIFO follow pointer */
-#define FIFORSMSK 0x1FC4 /* FIFO receive status mask */
-#define FIFORSOR 0x1FC6 /* FIFO receive status OR */
-#define FIFOSEL 0x1FC8 /* FIFO select */
-#define FIFORS 0x1FCA /* FIFO receive status */
-#define FIFORFL 0x1FCC /* FIFO receive frame length */
-#define FIFORAMCP 0x1FCE /* FIFO RAM current pointer */
-#define FIFORAMFP 0x1FD0 /* FIFO RAM follow pointer */
-#define BIFCTL 0x1FD2 /* BUS interface control */
-#define IRDARAM 0x0000 /* IrDA buffer RAM */
-#define IRDARAM_LEN __IRDARAM_LEN /* - 8/16/32 (read-only for 32) */
-
-/* IRTMR */
-#define TMD_MASK (0x3 << 14) /* Transfer Mode */
-#define TMD_SIR (0x0 << 14)
-#define TMD_MIR (0x3 << 14)
-#define TMD_FIR (0x2 << 14)
-
-#define FIFORIM (1 << 8) /* FIFO receive interrupt mask */
-#define MIM (1 << 4) /* MIR/FIR Interrupt Mask */
-#define SIM (1 << 0) /* SIR Interrupt Mask */
-#define xIM_MASK (FIFORIM | MIM | SIM)
-
-/* IRCFR */
-#define RTO_SHIFT 8 /* shift for Receive Timeout */
-#define RTO (0x3 << RTO_SHIFT)
-
-/* IRTCTR */
-#define ARMOD (1 << 15) /* Auto-Receive Mode */
-#define TE (1 << 0) /* Transmit Enable */
-
-/* IRRFLR */
-#define RFL_MASK (0x1FFF) /* mask for Receive Frame Length */
-
-/* IRRCTR */
-#define RE (1 << 0) /* Receive Enable */
-
-/*
- * SIRISR, SIRIMR, SIRICR,
- * MFIRISR, MFIRIMR, MFIRICR
- */
-#define FRE (1 << 15) /* Frame Receive End */
-#define TROV (1 << 11) /* Transfer Area Overflow */
-#define xIR_9 (1 << 9)
-#define TOT xIR_9 /* for SIR Timeout */
-#define ABTD xIR_9 /* for MIR/FIR Abort Detection */
-#define xIR_8 (1 << 8)
-#define FER xIR_8 /* for SIR Framing Error */
-#define CRCER xIR_8 /* for MIR/FIR CRC error */
-#define FTE (1 << 7) /* Frame Transmit End */
-#define xIR_MASK (FRE | TROV | xIR_9 | xIR_8 | FTE)
-
-/* SIRBCR */
-#define BRC_MASK (0x3F) /* mask for Baud Rate Count */
-
-/* CRCCTR */
-#define CRC_RST (1 << 15) /* CRC Engine Reset */
-#define CRC_CT_MASK 0x0FFF /* mask for CRC Engine Input Data Count */
-
-/* CRCIR */
-#define CRC_IN_MASK 0x0FFF /* mask for CRC Engine Input Data */
-
-/************************************************************************
-
-
- enum / structure
-
-
-************************************************************************/
-enum sh_irda_mode {
- SH_IRDA_NONE = 0,
- SH_IRDA_SIR,
- SH_IRDA_MIR,
- SH_IRDA_FIR,
-};
-
-struct sh_irda_self;
-struct sh_irda_xir_func {
- int (*xir_fre) (struct sh_irda_self *self);
- int (*xir_trov) (struct sh_irda_self *self);
- int (*xir_9) (struct sh_irda_self *self);
- int (*xir_8) (struct sh_irda_self *self);
- int (*xir_fte) (struct sh_irda_self *self);
-};
-
-struct sh_irda_self {
- void __iomem *membase;
- unsigned int irq;
- struct platform_device *pdev;
-
- struct net_device *ndev;
-
- struct irlap_cb *irlap;
- struct qos_info qos;
-
- iobuff_t tx_buff;
- iobuff_t rx_buff;
-
- enum sh_irda_mode mode;
- spinlock_t lock;
-
- struct sh_irda_xir_func *xir_func;
-};
-
-/************************************************************************
-
-
- common function
-
-
-************************************************************************/
-static void sh_irda_write(struct sh_irda_self *self, u32 offset, u16 data)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&self->lock, flags);
- iowrite16(data, self->membase + offset);
- spin_unlock_irqrestore(&self->lock, flags);
-}
-
-static u16 sh_irda_read(struct sh_irda_self *self, u32 offset)
-{
- unsigned long flags;
- u16 ret;
-
- spin_lock_irqsave(&self->lock, flags);
- ret = ioread16(self->membase + offset);
- spin_unlock_irqrestore(&self->lock, flags);
-
- return ret;
-}
-
-static void sh_irda_update_bits(struct sh_irda_self *self, u32 offset,
- u16 mask, u16 data)
-{
- unsigned long flags;
- u16 old, new;
-
- spin_lock_irqsave(&self->lock, flags);
- old = ioread16(self->membase + offset);
- new = (old & ~mask) | data;
- if (old != new)
- iowrite16(data, self->membase + offset);
- spin_unlock_irqrestore(&self->lock, flags);
-}
-
-/************************************************************************
-
-
- mode function
-
-
-************************************************************************/
-/*=====================================
- *
- * common
- *
- *=====================================*/
-static void sh_irda_rcv_ctrl(struct sh_irda_self *self, int enable)
-{
- struct device *dev = &self->ndev->dev;
-
- sh_irda_update_bits(self, IRRCTR, RE, enable ? RE : 0);
- dev_dbg(dev, "recv %s\n", enable ? "enable" : "disable");
-}
-
-static int sh_irda_set_timeout(struct sh_irda_self *self, int interval)
-{
- struct device *dev = &self->ndev->dev;
-
- if (SH_IRDA_SIR != self->mode)
- interval = 0;
-
- if (interval < 0 || interval > 2) {
- dev_err(dev, "unsupported timeout interval\n");
- return -EINVAL;
- }
-
- sh_irda_update_bits(self, IRCFR, RTO, interval << RTO_SHIFT);
- return 0;
-}
-
-static int sh_irda_set_baudrate(struct sh_irda_self *self, int baudrate)
-{
- struct device *dev = &self->ndev->dev;
- u16 val;
-
- if (baudrate < 0)
- return 0;
-
- if (SH_IRDA_SIR != self->mode) {
- dev_err(dev, "it is not SIR mode\n");
- return -EINVAL;
- }
-
- /*
- * Baud rate (bits/s) =
- * (48 MHz / 26) / (baud rate counter value + 1) x 16
- */
- val = (48000000 / 26 / 16 / baudrate) - 1;
- dev_dbg(dev, "baudrate = %d, val = 0x%02x\n", baudrate, val);
-
- sh_irda_update_bits(self, SIRBCR, BRC_MASK, val);
-
- return 0;
-}
-
-static int sh_irda_get_rcv_length(struct sh_irda_self *self)
-{
- return RFL_MASK & sh_irda_read(self, IRRFLR);
-}
-
-/*=====================================
- *
- * NONE MODE
- *
- *=====================================*/
-static int sh_irda_xir_fre(struct sh_irda_self *self)
-{
- struct device *dev = &self->ndev->dev;
- dev_err(dev, "none mode: frame recv\n");
- return 0;
-}
-
-static int sh_irda_xir_trov(struct sh_irda_self *self)
-{
- struct device *dev = &self->ndev->dev;
- dev_err(dev, "none mode: buffer ram over\n");
- return 0;
-}
-
-static int sh_irda_xir_9(struct sh_irda_self *self)
-{
- struct device *dev = &self->ndev->dev;
- dev_err(dev, "none mode: time over\n");
- return 0;
-}
-
-static int sh_irda_xir_8(struct sh_irda_self *self)
-{
- struct device *dev = &self->ndev->dev;
- dev_err(dev, "none mode: framing error\n");
- return 0;
-}
-
-static int sh_irda_xir_fte(struct sh_irda_self *self)
-{
- struct device *dev = &self->ndev->dev;
- dev_err(dev, "none mode: frame transmit end\n");
- return 0;
-}
-
-static struct sh_irda_xir_func sh_irda_xir_func = {
- .xir_fre = sh_irda_xir_fre,
- .xir_trov = sh_irda_xir_trov,
- .xir_9 = sh_irda_xir_9,
- .xir_8 = sh_irda_xir_8,
- .xir_fte = sh_irda_xir_fte,
-};
-
-/*=====================================
- *
- * MIR/FIR MODE
- *
- * MIR/FIR are not supported now
- *=====================================*/
-static struct sh_irda_xir_func sh_irda_mfir_func = {
- .xir_fre = sh_irda_xir_fre,
- .xir_trov = sh_irda_xir_trov,
- .xir_9 = sh_irda_xir_9,
- .xir_8 = sh_irda_xir_8,
- .xir_fte = sh_irda_xir_fte,
-};
-
-/*=====================================
- *
- * SIR MODE
- *
- *=====================================*/
-static int sh_irda_sir_fre(struct sh_irda_self *self)
-{
- struct device *dev = &self->ndev->dev;
- u16 data16;
- u8 *data = (u8 *)&data16;
- int len = sh_irda_get_rcv_length(self);
- int i, j;
-
- if (len > IRDARAM_LEN)
- len = IRDARAM_LEN;
-
- dev_dbg(dev, "frame recv length = %d\n", len);
-
- for (i = 0; i < len; i++) {
- j = i % 2;
- if (!j)
- data16 = sh_irda_read(self, IRDARAM + i);
-
- async_unwrap_char(self->ndev, &self->ndev->stats,
- &self->rx_buff, data[j]);
- }
- self->ndev->last_rx = jiffies;
-
- sh_irda_rcv_ctrl(self, 1);
-
- return 0;
-}
-
-static int sh_irda_sir_trov(struct sh_irda_self *self)
-{
- struct device *dev = &self->ndev->dev;
-
- dev_err(dev, "buffer ram over\n");
- sh_irda_rcv_ctrl(self, 1);
- return 0;
-}
-
-static int sh_irda_sir_tot(struct sh_irda_self *self)
-{
- struct device *dev = &self->ndev->dev;
-
- dev_err(dev, "time over\n");
- sh_irda_set_baudrate(self, 9600);
- sh_irda_rcv_ctrl(self, 1);
- return 0;
-}
-
-static int sh_irda_sir_fer(struct sh_irda_self *self)
-{
- struct device *dev = &self->ndev->dev;
-
- dev_err(dev, "framing error\n");
- sh_irda_rcv_ctrl(self, 1);
- return 0;
-}
-
-static int sh_irda_sir_fte(struct sh_irda_self *self)
-{
- struct device *dev = &self->ndev->dev;
-
- dev_dbg(dev, "frame transmit end\n");
- netif_wake_queue(self->ndev);
-
- return 0;
-}
-
-static struct sh_irda_xir_func sh_irda_sir_func = {
- .xir_fre = sh_irda_sir_fre,
- .xir_trov = sh_irda_sir_trov,
- .xir_9 = sh_irda_sir_tot,
- .xir_8 = sh_irda_sir_fer,
- .xir_fte = sh_irda_sir_fte,
-};
-
-static void sh_irda_set_mode(struct sh_irda_self *self, enum sh_irda_mode mode)
-{
- struct device *dev = &self->ndev->dev;
- struct sh_irda_xir_func *func;
- const char *name;
- u16 data;
-
- switch (mode) {
- case SH_IRDA_SIR:
- name = "SIR";
- data = TMD_SIR;
- func = &sh_irda_sir_func;
- break;
- case SH_IRDA_MIR:
- name = "MIR";
- data = TMD_MIR;
- func = &sh_irda_mfir_func;
- break;
- case SH_IRDA_FIR:
- name = "FIR";
- data = TMD_FIR;
- func = &sh_irda_mfir_func;
- break;
- default:
- name = "NONE";
- data = 0;
- func = &sh_irda_xir_func;
- break;
- }
-
- self->mode = mode;
- self->xir_func = func;
- sh_irda_update_bits(self, IRTMR, TMD_MASK, data);
-
- dev_dbg(dev, "switch to %s mode", name);
-}
-
-/************************************************************************
-
-
- irq function
-
-
-************************************************************************/
-static void sh_irda_set_irq_mask(struct sh_irda_self *self)
-{
- u16 tmr_hole;
- u16 xir_reg;
-
- /* set all mask */
- sh_irda_update_bits(self, IRTMR, xIM_MASK, xIM_MASK);
- sh_irda_update_bits(self, SIRIMR, xIR_MASK, xIR_MASK);
- sh_irda_update_bits(self, MFIRIMR, xIR_MASK, xIR_MASK);
-
- /* clear irq */
- sh_irda_update_bits(self, SIRICR, xIR_MASK, xIR_MASK);
- sh_irda_update_bits(self, MFIRICR, xIR_MASK, xIR_MASK);
-
- switch (self->mode) {
- case SH_IRDA_SIR:
- tmr_hole = SIM;
- xir_reg = SIRIMR;
- break;
- case SH_IRDA_MIR:
- case SH_IRDA_FIR:
- tmr_hole = MIM;
- xir_reg = MFIRIMR;
- break;
- default:
- tmr_hole = 0;
- xir_reg = 0;
- break;
- }
-
- /* open mask */
- if (xir_reg) {
- sh_irda_update_bits(self, IRTMR, tmr_hole, 0);
- sh_irda_update_bits(self, xir_reg, xIR_MASK, 0);
- }
-}
-
-static irqreturn_t sh_irda_irq(int irq, void *dev_id)
-{
- struct sh_irda_self *self = dev_id;
- struct sh_irda_xir_func *func = self->xir_func;
- u16 isr = sh_irda_read(self, SIRISR);
-
- /* clear irq */
- sh_irda_write(self, SIRICR, isr);
-
- if (isr & FRE)
- func->xir_fre(self);
- if (isr & TROV)
- func->xir_trov(self);
- if (isr & xIR_9)
- func->xir_9(self);
- if (isr & xIR_8)
- func->xir_8(self);
- if (isr & FTE)
- func->xir_fte(self);
-
- return IRQ_HANDLED;
-}
-
-/************************************************************************
-
-
- CRC function
-
-
-************************************************************************/
-static void sh_irda_crc_reset(struct sh_irda_self *self)
-{
- sh_irda_write(self, CRCCTR, CRC_RST);
-}
-
-static void sh_irda_crc_add(struct sh_irda_self *self, u16 data)
-{
- sh_irda_write(self, CRCIR, data & CRC_IN_MASK);
-}
-
-static u16 sh_irda_crc_cnt(struct sh_irda_self *self)
-{
- return CRC_CT_MASK & sh_irda_read(self, CRCCTR);
-}
-
-static u16 sh_irda_crc_out(struct sh_irda_self *self)
-{
- return sh_irda_read(self, CRCOR);
-}
-
-static int sh_irda_crc_init(struct sh_irda_self *self)
-{
- struct device *dev = &self->ndev->dev;
- int ret = -EIO;
- u16 val;
-
- sh_irda_crc_reset(self);
-
- sh_irda_crc_add(self, 0xCC);
- sh_irda_crc_add(self, 0xF5);
- sh_irda_crc_add(self, 0xF1);
- sh_irda_crc_add(self, 0xA7);
-
- val = sh_irda_crc_cnt(self);
- if (4 != val) {
- dev_err(dev, "CRC count error %x\n", val);
- goto crc_init_out;
- }
-
- val = sh_irda_crc_out(self);
- if (0x51DF != val) {
- dev_err(dev, "CRC result error%x\n", val);
- goto crc_init_out;
- }
-
- ret = 0;
-
-crc_init_out:
-
- sh_irda_crc_reset(self);
- return ret;
-}
-
-/************************************************************************
-
-
- iobuf function
-
-
-************************************************************************/
-static void sh_irda_remove_iobuf(struct sh_irda_self *self)
-{
- kfree(self->rx_buff.head);
-
- self->tx_buff.head = NULL;
- self->tx_buff.data = NULL;
- self->rx_buff.head = NULL;
- self->rx_buff.data = NULL;
-}
-
-static int sh_irda_init_iobuf(struct sh_irda_self *self, int rxsize, int txsize)
-{
- if (self->rx_buff.head ||
- self->tx_buff.head) {
- dev_err(&self->ndev->dev, "iobuff has already existed.");
- return -EINVAL;
- }
-
- /* rx_buff */
- self->rx_buff.head = kmalloc(rxsize, GFP_KERNEL);
- if (!self->rx_buff.head)
- return -ENOMEM;
-
- self->rx_buff.truesize = rxsize;
- self->rx_buff.in_frame = FALSE;
- self->rx_buff.state = OUTSIDE_FRAME;
- self->rx_buff.data = self->rx_buff.head;
-
- /* tx_buff */
- self->tx_buff.head = self->membase + IRDARAM;
- self->tx_buff.truesize = IRDARAM_LEN;
-
- return 0;
-}
-
-/************************************************************************
-
-
- net_device_ops function
-
-
-************************************************************************/
-static int sh_irda_hard_xmit(struct sk_buff *skb, struct net_device *ndev)
-{
- struct sh_irda_self *self = netdev_priv(ndev);
- struct device *dev = &self->ndev->dev;
- int speed = irda_get_next_speed(skb);
- int ret;
-
- dev_dbg(dev, "hard xmit\n");
-
- netif_stop_queue(ndev);
- sh_irda_rcv_ctrl(self, 0);
-
- ret = sh_irda_set_baudrate(self, speed);
- if (ret < 0)
- goto sh_irda_hard_xmit_end;
-
- self->tx_buff.len = 0;
- if (skb->len) {
- unsigned long flags;
-
- spin_lock_irqsave(&self->lock, flags);
- self->tx_buff.len = async_wrap_skb(skb,
- self->tx_buff.head,
- self->tx_buff.truesize);
- spin_unlock_irqrestore(&self->lock, flags);
-
- if (self->tx_buff.len > self->tx_buff.truesize)
- self->tx_buff.len = self->tx_buff.truesize;
-
- sh_irda_write(self, IRTFLR, self->tx_buff.len);
- sh_irda_write(self, IRTCTR, ARMOD | TE);
- } else
- goto sh_irda_hard_xmit_end;
-
- dev_kfree_skb(skb);
-
- return 0;
-
-sh_irda_hard_xmit_end:
- sh_irda_set_baudrate(self, 9600);
- netif_wake_queue(self->ndev);
- sh_irda_rcv_ctrl(self, 1);
- dev_kfree_skb(skb);
-
- return ret;
-
-}
-
-static int sh_irda_ioctl(struct net_device *ndev, struct ifreq *ifreq, int cmd)
-{
- /*
- * FIXME
- *
- * This function is needed for irda framework.
- * But nothing to do now
- */
- return 0;
-}
-
-static struct net_device_stats *sh_irda_stats(struct net_device *ndev)
-{
- struct sh_irda_self *self = netdev_priv(ndev);
-
- return &self->ndev->stats;
-}
-
-static int sh_irda_open(struct net_device *ndev)
-{
- struct sh_irda_self *self = netdev_priv(ndev);
- int err;
-
- pm_runtime_get_sync(&self->pdev->dev);
- err = sh_irda_crc_init(self);
- if (err)
- goto open_err;
-
- sh_irda_set_mode(self, SH_IRDA_SIR);
- sh_irda_set_timeout(self, 2);
- sh_irda_set_baudrate(self, 9600);
-
- self->irlap = irlap_open(ndev, &self->qos, DRIVER_NAME);
- if (!self->irlap) {
- err = -ENODEV;
- goto open_err;
- }
-
- netif_start_queue(ndev);
- sh_irda_rcv_ctrl(self, 1);
- sh_irda_set_irq_mask(self);
-
- dev_info(&ndev->dev, "opened\n");
-
- return 0;
-
-open_err:
- pm_runtime_put_sync(&self->pdev->dev);
-
- return err;
-}
-
-static int sh_irda_stop(struct net_device *ndev)
-{
- struct sh_irda_self *self = netdev_priv(ndev);
-
- /* Stop IrLAP */
- if (self->irlap) {
- irlap_close(self->irlap);
- self->irlap = NULL;
- }
-
- netif_stop_queue(ndev);
- pm_runtime_put_sync(&self->pdev->dev);
-
- dev_info(&ndev->dev, "stopped\n");
-
- return 0;
-}
-
-static const struct net_device_ops sh_irda_ndo = {
- .ndo_open = sh_irda_open,
- .ndo_stop = sh_irda_stop,
- .ndo_start_xmit = sh_irda_hard_xmit,
- .ndo_do_ioctl = sh_irda_ioctl,
- .ndo_get_stats = sh_irda_stats,
-};
-
-/************************************************************************
-
-
- platform_driver function
-
-
-************************************************************************/
-static int sh_irda_probe(struct platform_device *pdev)
-{
- struct net_device *ndev;
- struct sh_irda_self *self;
- struct resource *res;
- int irq;
- int err = -ENOMEM;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- irq = platform_get_irq(pdev, 0);
- if (!res || irq < 0) {
- dev_err(&pdev->dev, "Not enough platform resources.\n");
- goto exit;
- }
-
- ndev = alloc_irdadev(sizeof(*self));
- if (!ndev)
- goto exit;
-
- self = netdev_priv(ndev);
- self->membase = ioremap_nocache(res->start, resource_size(res));
- if (!self->membase) {
- err = -ENXIO;
- dev_err(&pdev->dev, "Unable to ioremap.\n");
- goto err_mem_1;
- }
-
- err = sh_irda_init_iobuf(self, IRDA_SKB_MAX_MTU, IRDA_SIR_MAX_FRAME);
- if (err)
- goto err_mem_2;
-
- self->pdev = pdev;
- pm_runtime_enable(&pdev->dev);
-
- irda_init_max_qos_capabilies(&self->qos);
-
- ndev->netdev_ops = &sh_irda_ndo;
- ndev->irq = irq;
-
- self->ndev = ndev;
- self->qos.baud_rate.bits &= IR_9600; /* FIXME */
- self->qos.min_turn_time.bits = 1; /* 10 ms or more */
- spin_lock_init(&self->lock);
-
- irda_qos_bits_to_value(&self->qos);
-
- err = register_netdev(ndev);
- if (err)
- goto err_mem_4;
-
- platform_set_drvdata(pdev, ndev);
- err = devm_request_irq(&pdev->dev, irq, sh_irda_irq, 0, "sh_irda", self);
- if (err) {
- dev_warn(&pdev->dev, "Unable to attach sh_irda interrupt\n");
- goto err_mem_4;
- }
-
- dev_info(&pdev->dev, "SuperH IrDA probed\n");
-
- goto exit;
-
-err_mem_4:
- pm_runtime_disable(&pdev->dev);
- sh_irda_remove_iobuf(self);
-err_mem_2:
- iounmap(self->membase);
-err_mem_1:
- free_netdev(ndev);
-exit:
- return err;
-}
-
-static int sh_irda_remove(struct platform_device *pdev)
-{
- struct net_device *ndev = platform_get_drvdata(pdev);
- struct sh_irda_self *self = netdev_priv(ndev);
-
- if (!self)
- return 0;
-
- unregister_netdev(ndev);
- pm_runtime_disable(&pdev->dev);
- sh_irda_remove_iobuf(self);
- iounmap(self->membase);
- free_netdev(ndev);
-
- return 0;
-}
-
-static int sh_irda_runtime_nop(struct device *dev)
-{
- /* Runtime PM callback shared between ->runtime_suspend()
- * and ->runtime_resume(). Simply returns success.
- *
- * This driver re-initializes all registers after
- * pm_runtime_get_sync() anyway so there is no need
- * to save and restore registers here.
- */
- return 0;
-}
-
-static const struct dev_pm_ops sh_irda_pm_ops = {
- .runtime_suspend = sh_irda_runtime_nop,
- .runtime_resume = sh_irda_runtime_nop,
-};
-
-static struct platform_driver sh_irda_driver = {
- .probe = sh_irda_probe,
- .remove = sh_irda_remove,
- .driver = {
- .name = DRIVER_NAME,
- .pm = &sh_irda_pm_ops,
- },
-};
-
-module_platform_driver(sh_irda_driver);
-
-MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
-MODULE_DESCRIPTION("SuperH IrDA driver");
-MODULE_LICENSE("GPL");
projects / linux-beck.git / commitdiff