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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.c126
1 files changed, 72 insertions, 54 deletions
diff --git a/drivers/net/irda/sh_irda.c b/drivers/net/irda/sh_irda.c
index 4488bd5..d275e27 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.
@@ -22,8 +22,11 @@
* - 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>
@@ -142,8 +145,8 @@ 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 +265,7 @@ 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 +275,47 @@ 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 +324,12 @@ 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 +337,12 @@ 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 +365,7 @@ 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 +374,7 @@ 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 +384,7 @@ 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 +393,7 @@ 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 +403,12 @@ 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 +422,22 @@ 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;
}
@@ -692,7 +695,7 @@ 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;
@@ -716,7 +719,7 @@ 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;
}
@@ -732,6 +735,7 @@ 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");
@@ -784,11 +788,8 @@ 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);
@@ -818,8 +819,7 @@ 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);
@@ -838,7 +838,7 @@ 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);
@@ -847,11 +847,29 @@ static int __devexit sh_irda_remove(struct platform_device *pdev)
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 = __devexit_p(sh_irda_remove),
- .driver = {
- .name = DRIVER_NAME,
+ .probe = sh_irda_probe,
+ .remove = __devexit_p(sh_irda_remove),
+ .driver = {
+ .name = DRIVER_NAME,
+ .pm = &sh_irda_pm_ops,
},
};
@@ -868,6 +886,6 @@ static void __exit sh_irda_exit(void)
module_init(sh_irda_init);
module_exit(sh_irda_exit);
-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 v1.1 at 2024-04-19 10:30:08 +0000