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path: root/drivers/net/irda/sh_irda.c
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Diffstat (limited to 'drivers/net/irda/sh_irda.c')
-rw-r--r--drivers/net/irda/sh_irda.c168
1 files changed, 90 insertions, 78 deletions
diff --git a/drivers/net/irda/sh_irda.c b/drivers/net/irda/sh_irda.c
index 9e3f4f54281..c96b46b2c3a 100644
--- a/drivers/net/irda/sh_irda.c
+++ b/drivers/net/irda/sh_irda.c
@@ -2,7 +2,7 @@
* SuperH IrDA Driver
*
* Copyright (C) 2010 Renesas Solutions Corp.
- * Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* Based on sh_sir.c
* Copyright (C) 2009 Renesas Solutions Corp.
@@ -22,19 +22,18 @@
* - 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"
-#if defined(CONFIG_ARCH_SH7367) || defined(CONFIG_ARCH_SH7377)
-#define __IRDARAM_LEN 0x13FF
-#else
#define __IRDARAM_LEN 0x1039
-#endif
#define IRTMR 0x1F00 /* Transfer mode */
#define IRCFR 0x1F02 /* Configuration */
@@ -142,8 +141,8 @@ struct sh_irda_xir_func {
struct sh_irda_self {
void __iomem *membase;
- unsigned int irq;
- struct clk *clk;
+ unsigned int irq;
+ struct platform_device *pdev;
struct net_device *ndev;
@@ -262,7 +261,7 @@ static int sh_irda_set_baudrate(struct sh_irda_self *self, int baudrate)
return 0;
}
-static int xir_get_rcv_length(struct sh_irda_self *self)
+static int sh_irda_get_rcv_length(struct sh_irda_self *self)
{
return RFL_MASK & sh_irda_read(self, IRRFLR);
}
@@ -272,47 +271,47 @@ static int xir_get_rcv_length(struct sh_irda_self *self)
* NONE MODE
*
*=====================================*/
-static int xir_fre(struct sh_irda_self *self)
+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 xir_trov(struct sh_irda_self *self)
+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 xir_9(struct sh_irda_self *self)
+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 xir_8(struct sh_irda_self *self)
+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 xir_fte(struct sh_irda_self *self)
+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 xir_func = {
- .xir_fre = xir_fre,
- .xir_trov = xir_trov,
- .xir_9 = xir_9,
- .xir_8 = xir_8,
- .xir_fte = xir_fte,
+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,
};
/*=====================================
@@ -321,12 +320,12 @@ static struct sh_irda_xir_func xir_func = {
*
* MIR/FIR are not supported now
*=====================================*/
-static struct sh_irda_xir_func mfir_func = {
- .xir_fre = xir_fre,
- .xir_trov = xir_trov,
- .xir_9 = xir_9,
- .xir_8 = xir_8,
- .xir_fte = xir_fte,
+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,
};
/*=====================================
@@ -334,12 +333,12 @@ static struct sh_irda_xir_func mfir_func = {
* SIR MODE
*
*=====================================*/
-static int sir_fre(struct sh_irda_self *self)
+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 = xir_get_rcv_length(self);
+ int len = sh_irda_get_rcv_length(self);
int i, j;
if (len > IRDARAM_LEN)
@@ -362,7 +361,7 @@ static int sir_fre(struct sh_irda_self *self)
return 0;
}
-static int sir_trov(struct sh_irda_self *self)
+static int sh_irda_sir_trov(struct sh_irda_self *self)
{
struct device *dev = &self->ndev->dev;
@@ -371,7 +370,7 @@ static int sir_trov(struct sh_irda_self *self)
return 0;
}
-static int sir_tot(struct sh_irda_self *self)
+static int sh_irda_sir_tot(struct sh_irda_self *self)
{
struct device *dev = &self->ndev->dev;
@@ -381,7 +380,7 @@ static int sir_tot(struct sh_irda_self *self)
return 0;
}
-static int sir_fer(struct sh_irda_self *self)
+static int sh_irda_sir_fer(struct sh_irda_self *self)
{
struct device *dev = &self->ndev->dev;
@@ -390,7 +389,7 @@ static int sir_fer(struct sh_irda_self *self)
return 0;
}
-static int sir_fte(struct sh_irda_self *self)
+static int sh_irda_sir_fte(struct sh_irda_self *self)
{
struct device *dev = &self->ndev->dev;
@@ -400,12 +399,12 @@ static int sir_fte(struct sh_irda_self *self)
return 0;
}
-static struct sh_irda_xir_func sir_func = {
- .xir_fre = sir_fre,
- .xir_trov = sir_trov,
- .xir_9 = sir_tot,
- .xir_8 = sir_fer,
- .xir_fte = sir_fte,
+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)
@@ -419,22 +418,22 @@ static void sh_irda_set_mode(struct sh_irda_self *self, enum sh_irda_mode mode)
case SH_IRDA_SIR:
name = "SIR";
data = TMD_SIR;
- func = &sir_func;
+ func = &sh_irda_sir_func;
break;
case SH_IRDA_MIR:
name = "MIR";
data = TMD_MIR;
- func = &mfir_func;
+ func = &sh_irda_mfir_func;
break;
case SH_IRDA_FIR:
name = "FIR";
data = TMD_FIR;
- func = &mfir_func;
+ func = &sh_irda_mfir_func;
break;
default:
- name = "NONE";
- data = 0;
- func = &xir_func;
+ name = "NONE";
+ data = 0;
+ func = &sh_irda_xir_func;
break;
}
@@ -635,7 +634,7 @@ static int sh_irda_hard_xmit(struct sk_buff *skb, struct net_device *ndev)
ret = sh_irda_set_baudrate(self, speed);
if (ret < 0)
- return ret;
+ goto sh_irda_hard_xmit_end;
self->tx_buff.len = 0;
if (skb->len) {
@@ -652,11 +651,21 @@ static int sh_irda_hard_xmit(struct sk_buff *skb, struct net_device *ndev)
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)
@@ -682,7 +691,7 @@ static int sh_irda_open(struct net_device *ndev)
struct sh_irda_self *self = netdev_priv(ndev);
int err;
- clk_enable(self->clk);
+ pm_runtime_get_sync(&self->pdev->dev);
err = sh_irda_crc_init(self);
if (err)
goto open_err;
@@ -706,7 +715,7 @@ static int sh_irda_open(struct net_device *ndev)
return 0;
open_err:
- clk_disable(self->clk);
+ pm_runtime_put_sync(&self->pdev->dev);
return err;
}
@@ -722,8 +731,9 @@ static int sh_irda_stop(struct net_device *ndev)
}
netif_stop_queue(ndev);
+ pm_runtime_put_sync(&self->pdev->dev);
- dev_info(&ndev->dev, "stoped\n");
+ dev_info(&ndev->dev, "stopped\n");
return 0;
}
@@ -743,7 +753,7 @@ static const struct net_device_ops sh_irda_ndo = {
************************************************************************/
-static int __devinit sh_irda_probe(struct platform_device *pdev)
+static int sh_irda_probe(struct platform_device *pdev)
{
struct net_device *ndev;
struct sh_irda_self *self;
@@ -774,11 +784,8 @@ static int __devinit sh_irda_probe(struct platform_device *pdev)
if (err)
goto err_mem_2;
- self->clk = clk_get(&pdev->dev, NULL);
- if (IS_ERR(self->clk)) {
- dev_err(&pdev->dev, "cannot get irda clock\n");
- goto err_mem_3;
- }
+ self->pdev = pdev;
+ pm_runtime_enable(&pdev->dev);
irda_init_max_qos_capabilies(&self->qos);
@@ -797,8 +804,8 @@ static int __devinit sh_irda_probe(struct platform_device *pdev)
goto err_mem_4;
platform_set_drvdata(pdev, ndev);
-
- if (request_irq(irq, sh_irda_irq, IRQF_DISABLED, "sh_irda", self)) {
+ 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;
}
@@ -808,8 +815,7 @@ static int __devinit sh_irda_probe(struct platform_device *pdev)
goto exit;
err_mem_4:
- clk_put(self->clk);
-err_mem_3:
+ pm_runtime_disable(&pdev->dev);
sh_irda_remove_iobuf(self);
err_mem_2:
iounmap(self->membase);
@@ -819,7 +825,7 @@ exit:
return err;
}
-static int __devexit sh_irda_remove(struct platform_device *pdev)
+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);
@@ -828,36 +834,42 @@ static int __devexit sh_irda_remove(struct platform_device *pdev)
return 0;
unregister_netdev(ndev);
- clk_put(self->clk);
+ pm_runtime_disable(&pdev->dev);
sh_irda_remove_iobuf(self);
iounmap(self->membase);
free_netdev(ndev);
- platform_set_drvdata(pdev, NULL);
return 0;
}
-static struct platform_driver sh_irda_driver = {
- .probe = sh_irda_probe,
- .remove = __devexit_p(sh_irda_remove),
- .driver = {
- .name = DRIVER_NAME,
- },
-};
-
-static int __init sh_irda_init(void)
+static int sh_irda_runtime_nop(struct device *dev)
{
- return platform_driver_register(&sh_irda_driver);
+ /* 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 void __exit sh_irda_exit(void)
-{
- platform_driver_unregister(&sh_irda_driver);
-}
+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_init(sh_irda_init);
-module_exit(sh_irda_exit);
+module_platform_driver(sh_irda_driver);
-MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>");
+MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
MODULE_DESCRIPTION("SuperH IrDA driver");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 01:42:36 +0000